diff options
Diffstat (limited to 'xlators/cluster/dht/src/tier.c')
| -rw-r--r-- | xlators/cluster/dht/src/tier.c | 3326 |
1 files changed, 0 insertions, 3326 deletions
diff --git a/xlators/cluster/dht/src/tier.c b/xlators/cluster/dht/src/tier.c deleted file mode 100644 index 5fa50a26d80..00000000000 --- a/xlators/cluster/dht/src/tier.c +++ /dev/null @@ -1,3326 +0,0 @@ -/* - Copyright (c) 2015 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 <dlfcn.h> - -#include "dht-common.h" -#include "tier.h" -#include "tier-common.h" -#include "syscall.h" -#include "events.h" -#include "tier-ctr-interface.h" - -/*Hard coded DB info*/ -static gfdb_db_type_t dht_tier_db_type = GFDB_SQLITE3; -/*Hard coded DB info*/ - -/*Mutex for updating the data movement stats*/ -static pthread_mutex_t dm_stat_mutex = PTHREAD_MUTEX_INITIALIZER; - -/* Stores the path location of promotion query files */ -static char *promotion_qfile; -/* Stores the path location of demotion query files */ -static char *demotion_qfile; - -static void *libhandle; -static gfdb_methods_t gfdb_methods; - -#define DB_QUERY_RECORD_SIZE 4096 - -/* - * Closes all the fds and frees the qfile_array - * */ -static void -qfile_array_free (tier_qfile_array_t *qfile_array) -{ - ssize_t i = 0; - - if (qfile_array) { - if (qfile_array->fd_array) { - for (i = 0; i < qfile_array->array_size; i++) { - if (qfile_array->fd_array[i] != -1) { - sys_close (qfile_array->fd_array[i]); - } - } - } - GF_FREE (qfile_array->fd_array); - } - GF_FREE (qfile_array); -} - - -/* Create a new query file list with given size */ -static tier_qfile_array_t * -qfile_array_new (ssize_t array_size) -{ - int ret = -1; - tier_qfile_array_t *qfile_array = NULL; - ssize_t i = 0; - - GF_VALIDATE_OR_GOTO ("tier", (array_size > 0), out); - - qfile_array = GF_CALLOC (1, sizeof (tier_qfile_array_t), - gf_tier_mt_qfile_array_t); - if (!qfile_array) { - gf_msg ("tier", GF_LOG_ERROR, 0, DHT_MSG_LOG_TIER_ERROR, - "Failed to allocate memory for tier_qfile_array_t"); - goto out; - } - - qfile_array->fd_array = GF_CALLOC (array_size, sizeof (int), - gf_dht_mt_int32_t); - if (!qfile_array->fd_array) { - gf_msg ("tier", GF_LOG_ERROR, 0, DHT_MSG_LOG_TIER_ERROR, - "Failed to allocate memory for " - "tier_qfile_array_t->fd_array"); - goto out; - } - - /* Init all the fds to -1 */ - for (i = 0; i < array_size; i++) { - qfile_array->fd_array[i] = -1; - } - - qfile_array->array_size = array_size; - qfile_array->next_index = 0; - - /* Set exhausted count to list size as the list is empty */ - qfile_array->exhausted_count = qfile_array->array_size; - - ret = 0; -out: - if (ret) { - qfile_array_free (qfile_array); - qfile_array = NULL; - } - return qfile_array; -} - - -/* Checks if the query file list is empty or totally exhausted. */ -static gf_boolean_t -is_qfile_array_empty (tier_qfile_array_t *qfile_array) -{ - return (qfile_array->exhausted_count == qfile_array->array_size) ? - _gf_true : _gf_false; -} - - -/* Shifts the next_fd pointer to the next available fd in the list */ -static void -shift_next_index (tier_qfile_array_t *qfile_array) -{ - int qfile_fd = 0; - int spin_count = 0; - - if (is_qfile_array_empty (qfile_array)) { - return; - } - - do { - /* change next_index in a rotional manner */ - (qfile_array->next_index == (qfile_array->array_size - 1)) ? - qfile_array->next_index = 0 : qfile_array->next_index++; - - qfile_fd = (qfile_array->fd_array[qfile_array->next_index]); - - spin_count++; - - } while ((qfile_fd == -1) && (spin_count < qfile_array->array_size)); - -} - -/* - * This is a non-thread safe function to read query records - * from a list of query files in a Round-Robin manner. - * As in when the query files get exhuasted they are closed. - * Returns: - * 0 if all the query records in all the query files of the list are - * exhausted. - * > 0 if a query record is successfully read. Indicates the size of the query - * record read. - * < 0 if there was failure - * */ -static int -read_query_record_list (tier_qfile_array_t *qfile_array, - gfdb_query_record_t **query_record) -{ - int ret = -1; - int qfile_fd = 0; - - GF_VALIDATE_OR_GOTO ("tier", qfile_array, out); - GF_VALIDATE_OR_GOTO ("tier", qfile_array->fd_array, out); - - do { - if (is_qfile_array_empty (qfile_array)) { - ret = 0; - break; - } - - qfile_fd = qfile_array->fd_array[qfile_array->next_index]; - ret = gfdb_methods.gfdb_read_query_record - (qfile_fd, query_record); - if (ret <= 0) { - /*The qfile_fd has reached EOF or - * there was an error. - * 1. Close the exhausted fd - * 2. increment the exhausted count - * 3. shift next_qfile to next qfile - **/ - sys_close (qfile_fd); - qfile_array->fd_array[qfile_array->next_index] = -1; - qfile_array->exhausted_count++; - /* shift next_qfile to next qfile */ - shift_next_index (qfile_array); - continue; - } else { - /* shift next_qfile to next qfile */ - shift_next_index (qfile_array); - break; - } - } while (1); -out: - return ret; -} - - -/* Check and update the watermark every WM_INTERVAL seconds */ -#define WM_INTERVAL 5 -#define WM_INTERVAL_EMERG 1 - -static int -tier_check_same_node (xlator_t *this, loc_t *loc, gf_defrag_info_t *defrag) -{ - int ret = -1; - dict_t *dict = NULL; - char *uuid_str = NULL; - uuid_t node_uuid = {0,}; - - GF_VALIDATE_OR_GOTO ("tier", this, out); - GF_VALIDATE_OR_GOTO (this->name, loc, out); - GF_VALIDATE_OR_GOTO (this->name, defrag, out); - - if (syncop_getxattr (this, loc, &dict, GF_XATTR_NODE_UUID_KEY, - NULL, NULL)) { - gf_msg (this->name, GF_LOG_ERROR, 0, DHT_MSG_LOG_TIER_ERROR, - "Unable to get NODE_UUID_KEY %s %s\n", - loc->name, loc->path); - goto out; - } - - if (dict_get_str (dict, GF_XATTR_NODE_UUID_KEY, &uuid_str) < 0) { - gf_msg (this->name, GF_LOG_ERROR, 0, DHT_MSG_LOG_TIER_ERROR, - "Failed to get node-uuids for %s", loc->path); - goto out; - } - - - if (gf_uuid_parse (uuid_str, node_uuid)) { - gf_msg (this->name, GF_LOG_ERROR, 0, DHT_MSG_LOG_TIER_ERROR, - "uuid_parse failed for %s", loc->path); - goto out; - } - - if (gf_uuid_compare (node_uuid, defrag->node_uuid)) { - gf_msg_debug (this->name, 0, - "%s does not belong to this node", loc->path); - ret = 1; - goto out; - } - - ret = 0; -out: - if (dict) - dict_unref(dict); - - return ret; -} - -int -tier_get_fs_stat (xlator_t *this, loc_t *root_loc) -{ - int ret = 0; - gf_defrag_info_t *defrag = NULL; - dht_conf_t *conf = NULL; - dict_t *xdata = NULL; - struct statvfs statfs = {0, }; - gf_tier_conf_t *tier_conf = NULL; - - - conf = this->private; - if (!conf) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_STATUS, - "conf is NULL"); - ret = -1; - goto exit; - } - - defrag = conf->defrag; - if (!defrag) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_STATUS, - "defrag is NULL"); - ret = -1; - goto exit; - } - - tier_conf = &defrag->tier_conf; - - xdata = dict_new (); - if (!xdata) { - gf_msg (this->name, GF_LOG_ERROR, ENOMEM, - DHT_MSG_NO_MEMORY, - "failed to allocate dictionary"); - ret = -1; - goto exit; - } - - ret = dict_set_int8 (xdata, GF_INTERNAL_IGNORE_DEEM_STATFS, 1); - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_DICT_SET_FAILED, - "Failed to set " - GF_INTERNAL_IGNORE_DEEM_STATFS" in dict"); - ret = -1; - goto exit; - } - - /* Find how much free space is on the hot subvolume. - * Then see if that value */ - /* is less than or greater than user defined watermarks. - * Stash results in */ - /* the tier_conf data structure. */ - - ret = syncop_statfs (conf->subvolumes[1], root_loc, &statfs, - xdata, NULL); - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, -ret, - DHT_MSG_LOG_TIER_STATUS, - "Unable to obtain statfs."); - goto exit; - } - - pthread_mutex_lock (&dm_stat_mutex); - - tier_conf->block_size = statfs.f_bsize; - tier_conf->blocks_total = statfs.f_blocks; - tier_conf->blocks_used = statfs.f_blocks - statfs.f_bfree; - - tier_conf->percent_full = GF_PERCENTAGE(tier_conf->blocks_used, - statfs.f_blocks); - pthread_mutex_unlock (&dm_stat_mutex); - -exit: - if (xdata) - dict_unref (xdata); - return ret; -} - -static void -tier_send_watermark_event (const char *volname, - tier_watermark_op_t old_wm, - tier_watermark_op_t new_wm) -{ - if (old_wm == TIER_WM_LOW || old_wm == TIER_WM_NONE) { - if (new_wm == TIER_WM_MID) { - gf_event (EVENT_TIER_WATERMARK_RAISED_TO_MID, - "vol=%s", volname); - } else if (new_wm == TIER_WM_HI) { - gf_event (EVENT_TIER_WATERMARK_HI, "vol=%s", volname); - } - } else if (old_wm == TIER_WM_MID) { - if (new_wm == TIER_WM_LOW) { - gf_event (EVENT_TIER_WATERMARK_DROPPED_TO_LOW, - "vol=%s", volname); - } else if (new_wm == TIER_WM_HI) { - gf_event (EVENT_TIER_WATERMARK_HI, "vol=%s", volname); - } - } else if (old_wm == TIER_WM_HI) { - if (new_wm == TIER_WM_MID) { - gf_event (EVENT_TIER_WATERMARK_DROPPED_TO_MID, - "vol=%s", volname); - } else if (new_wm == TIER_WM_LOW) { - gf_event (EVENT_TIER_WATERMARK_DROPPED_TO_LOW, - "vol=%s", volname); - } - } -} - -int -tier_check_watermark (xlator_t *this) -{ - int ret = -1; - gf_defrag_info_t *defrag = NULL; - dht_conf_t *conf = NULL; - gf_tier_conf_t *tier_conf = NULL; - tier_watermark_op_t wm = TIER_WM_NONE; - - conf = this->private; - if (!conf) - goto exit; - - defrag = conf->defrag; - if (!defrag) - goto exit; - - tier_conf = &defrag->tier_conf; - - if (tier_conf->percent_full < tier_conf->watermark_low) { - wm = TIER_WM_LOW; - - } else if (tier_conf->percent_full < tier_conf->watermark_hi) { - wm = TIER_WM_MID; - - } else { - wm = TIER_WM_HI; - } - - if (wm != tier_conf->watermark_last) { - - tier_send_watermark_event (tier_conf->volname, - tier_conf->watermark_last, - wm); - - tier_conf->watermark_last = wm; - gf_msg (this->name, GF_LOG_INFO, 0, - DHT_MSG_LOG_TIER_STATUS, - "Tier watermark now %d", wm); - } - - ret = 0; - -exit: - return ret; -} - - -static gf_boolean_t -is_hot_tier_full (gf_tier_conf_t *tier_conf) -{ - if (tier_conf && (tier_conf->mode == TIER_MODE_WM) && - (tier_conf->watermark_last == TIER_WM_HI)) - return _gf_true; - - return _gf_false; -} - -int -tier_do_migration (xlator_t *this, int promote) -{ - gf_defrag_info_t *defrag = NULL; - dht_conf_t *conf = NULL; - long rand = 0; - int migrate = 0; - gf_tier_conf_t *tier_conf = NULL; - - conf = this->private; - if (!conf) - goto exit; - - defrag = conf->defrag; - if (!defrag) - goto exit; - - if (tier_check_watermark (this) != 0) { - gf_msg (this->name, GF_LOG_CRITICAL, errno, - DHT_MSG_LOG_TIER_ERROR, - "Failed to get watermark"); - goto exit; - } - - tier_conf = &defrag->tier_conf; - - switch (tier_conf->watermark_last) { - case TIER_WM_LOW: - migrate = promote ? 1 : 0; - break; - case TIER_WM_HI: - migrate = promote ? 0 : 1; - break; - case TIER_WM_MID: - /* coverity[DC.WEAK_CRYPTO] */ - rand = random() % 100; - if (promote) { - migrate = (rand > tier_conf->percent_full); - } else { - migrate = (rand <= tier_conf->percent_full); - } - break; - } - -exit: - return migrate; -} - -int -tier_migrate (xlator_t *this, int is_promotion, dict_t *migrate_data, - loc_t *loc, gf_tier_conf_t *tier_conf) -{ - int ret = -1; - - pthread_mutex_lock (&tier_conf->pause_mutex); - if (is_promotion) - tier_conf->promote_in_progress = 1; - else - tier_conf->demote_in_progress = 1; - pthread_mutex_unlock (&tier_conf->pause_mutex); - - /* Data migration */ - ret = syncop_setxattr (this, loc, migrate_data, 0, - NULL, NULL); - - pthread_mutex_lock (&tier_conf->pause_mutex); - if (is_promotion) - tier_conf->promote_in_progress = 0; - else - tier_conf->demote_in_progress = 0; - pthread_mutex_unlock (&tier_conf->pause_mutex); - - return ret; -} - -/* returns _gf_true: if file can be promoted - * returns _gf_false: if file cannot be promoted - */ -static gf_boolean_t -tier_can_promote_file (xlator_t *this, char const *file_name, - struct iatt *current, gf_defrag_info_t *defrag) -{ - gf_boolean_t ret = _gf_false; - fsblkcnt_t estimated_usage = 0; - - if (defrag->tier_conf.tier_max_promote_size && - (current->ia_size > defrag->tier_conf.tier_max_promote_size)) { - gf_msg (this->name, GF_LOG_INFO, 0, - DHT_MSG_LOG_TIER_STATUS, - "File %s (gfid:%s) with size (%lu) exceeds maxsize " - "(%d) for promotion. File will not be promoted.", - file_name, - uuid_utoa(current->ia_gfid), - current->ia_size, - defrag->tier_conf.tier_max_promote_size); - goto err; - } - - /* bypass further validations for TEST mode */ - if (defrag->tier_conf.mode != TIER_MODE_WM) { - ret = _gf_true; - goto err; - } - - /* convert the file size to blocks as per the block size of the - * destination tier - * NOTE: add (block_size - 1) to get the correct block size when - * there is a remainder after a modulo - */ - estimated_usage = ((current->ia_size + defrag->tier_conf.block_size - 1) / - defrag->tier_conf.block_size) + - defrag->tier_conf.blocks_used; - - /* test if the estimated block usage goes above HI watermark */ - if (GF_PERCENTAGE (estimated_usage, defrag->tier_conf.blocks_total) >= - defrag->tier_conf.watermark_hi) { - gf_msg (this->name, GF_LOG_INFO, 0, - DHT_MSG_LOG_TIER_STATUS, - "Estimated block count consumption on " - "hot tier (%lu) exceeds hi watermark (%d%%). " - "File will not be promoted.", - estimated_usage, - defrag->tier_conf.watermark_hi); - goto err; - } - ret = _gf_true; -err: - return ret; -} - -static int -tier_set_migrate_data (dict_t *migrate_data) -{ - int failed = 1; - - - failed = dict_set_str (migrate_data, GF_XATTR_FILE_MIGRATE_KEY, "force"); - if (failed) { - goto bail_out; - } - - /* Flag to suggest the xattr call is from migrator */ - failed = dict_set_str (migrate_data, "from.migrator", "yes"); - if (failed) { - goto bail_out; - } - - /* Flag to suggest its a tiering migration - * The reason for this dic key-value is that - * promotions and demotions are multithreaded - * so the original frame from gf_defrag_start() - * is not carried. A new frame will be created when - * we do syncop_setxattr(). This doesnot have the - * frame->root->pid of the original frame. So we pass - * this dic key-value when we do syncop_setxattr() to do - * data migration and set the frame->root->pid to - * GF_CLIENT_PID_TIER_DEFRAG in dht_setxattr() just before - * calling dht_start_rebalance_task() */ - failed = dict_set_str (migrate_data, TIERING_MIGRATION_KEY, "yes"); - if (failed) { - goto bail_out; - } - - failed = 0; - -bail_out: - return failed; -} - -static char * -tier_get_parent_path (xlator_t *this, - loc_t *p_loc, - struct iatt *par_stbuf, - int *per_link_status) -{ - int ret = -1; - char *parent_path = NULL; - dict_t *xdata_request = NULL; - dict_t *xdata_response = NULL; - - - xdata_request = dict_new (); - if (!xdata_request) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "Failed to create xdata_request dict"); - goto err; - } - ret = dict_set_int32 (xdata_request, - GET_ANCESTRY_PATH_KEY, 42); - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "Failed to set value to dict : key %s \n", - GET_ANCESTRY_PATH_KEY); - goto err; - } - - ret = syncop_lookup (this, p_loc, par_stbuf, NULL, - xdata_request, &xdata_response); - /* When the parent gfid is a stale entry, the lookup - * will fail and stop the demotion process. - * The parent gfid can be stale when a huge folder is - * deleted while the files within it are being migrated - */ - if (ret == -ESTALE) { - gf_msg (this->name, GF_LOG_WARNING, -ret, - DHT_MSG_STALE_LOOKUP, - "Stale entry in parent lookup for %s", - uuid_utoa (p_loc->gfid)); - *per_link_status = 1; - goto err; - } else if (ret) { - gf_msg (this->name, GF_LOG_ERROR, -ret, - DHT_MSG_LOG_TIER_ERROR, - "Error in parent lookup for %s", - uuid_utoa (p_loc->gfid)); - *per_link_status = -1; - goto err; - } - ret = dict_get_str (xdata_response, GET_ANCESTRY_PATH_KEY, &parent_path); - if (ret || !parent_path) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "Failed to get parent path for %s", - uuid_utoa (p_loc->gfid)); - *per_link_status = -1; - goto err; - } - -err: - if (xdata_request) { - dict_unref (xdata_request); - } - - if (xdata_response) { - dict_unref (xdata_response); - xdata_response = NULL; - } - - return parent_path; -} - -static int -tier_get_file_name_and_path (xlator_t *this, - uuid_t gfid, - gfdb_link_info_t *link_info, - char const *parent_path, - loc_t *loc, - int *per_link_status) -{ - int ret = -1; - - loc->name = gf_strdup (link_info->file_name); - if (!loc->name) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, "Memory " - "allocation failed for %s", - uuid_utoa (gfid)); - *per_link_status = -1; - goto err; - } - ret = gf_asprintf((char **)&(loc->path), "%s/%s", parent_path, loc->name); - if (ret < 0) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, "Failed to " - "construct file path for %s %s\n", - parent_path, loc->name); - *per_link_status = -1; - goto err; - } - - ret = 0; - -err: - return ret; -} - -static int -tier_lookup_file (xlator_t *this, - loc_t *p_loc, - loc_t *loc, - struct iatt *current, - int *per_link_status) -{ - int ret = -1; - - ret = syncop_lookup (this, loc, current, NULL, NULL, NULL); - - /* The file may be deleted even when the parent - * is available and the lookup will - * return a stale entry which would stop the - * migration. so if its a stale entry, then skip - * the file and keep migrating. - */ - if (ret == -ESTALE) { - gf_msg (this->name, GF_LOG_WARNING, -ret, - DHT_MSG_STALE_LOOKUP, - "Stale lookup for %s", - uuid_utoa (p_loc->gfid)); - *per_link_status = 1; - goto err; - } else if (ret) { - gf_msg (this->name, GF_LOG_ERROR, -ret, - DHT_MSG_LOG_TIER_ERROR, "Failed to " - "lookup file %s\n", loc->name); - *per_link_status = -1; - goto err; - } - ret = 0; - -err: - return ret; -} - -static gf_boolean_t -tier_is_file_already_at_destination (xlator_t *src_subvol, - query_cbk_args_t *query_cbk_args, - dht_conf_t *conf, - int *per_link_status) -{ - gf_boolean_t at_destination = _gf_true; - - if (src_subvol == NULL) { - *per_link_status = 1; - goto err; - } - if (query_cbk_args->is_promotion && - src_subvol == conf->subvolumes[1]) { - *per_link_status = 1; - goto err; - } - - if (!query_cbk_args->is_promotion && - src_subvol == conf->subvolumes[0]) { - *per_link_status = 1; - goto err; - } - at_destination = _gf_false; - -err: - return at_destination; -} - -static void -tier_update_migration_counters (query_cbk_args_t *query_cbk_args, - gf_defrag_info_t *defrag, - uint64_t *total_migrated_bytes, - int *total_files) -{ - if (query_cbk_args->is_promotion) { - defrag->total_files_promoted++; - *total_migrated_bytes += - defrag->tier_conf.st_last_promoted_size; - pthread_mutex_lock (&dm_stat_mutex); - defrag->tier_conf.blocks_used += - defrag->tier_conf.st_last_promoted_size; - pthread_mutex_unlock (&dm_stat_mutex); - } else { - defrag->total_files_demoted++; - *total_migrated_bytes += - defrag->tier_conf.st_last_demoted_size; - pthread_mutex_lock (&dm_stat_mutex); - defrag->tier_conf.blocks_used -= - defrag->tier_conf.st_last_demoted_size; - pthread_mutex_unlock (&dm_stat_mutex); - } - if (defrag->tier_conf.blocks_total) { - pthread_mutex_lock (&dm_stat_mutex); - defrag->tier_conf.percent_full = - GF_PERCENTAGE (defrag->tier_conf.blocks_used, - defrag->tier_conf.blocks_total); - pthread_mutex_unlock (&dm_stat_mutex); - } - - (*total_files)++; -} - -static int -tier_migrate_link (xlator_t *this, - dht_conf_t *conf, - uuid_t gfid, - gfdb_link_info_t *link_info, - gf_defrag_info_t *defrag, - query_cbk_args_t *query_cbk_args, - dict_t *migrate_data, - int *per_link_status, - int *total_files, - uint64_t *total_migrated_bytes) -{ - int ret = -1; - struct iatt current = {0,}; - struct iatt par_stbuf = {0,}; - loc_t p_loc = {0,}; - loc_t loc = {0,}; - xlator_t *src_subvol = NULL; - inode_t *linked_inode = NULL; - char *parent_path = NULL; - - - /* Lookup for parent and get the path of parent */ - gf_uuid_copy (p_loc.gfid, link_info->pargfid); - p_loc.inode = inode_new (defrag->root_inode->table); - if (!p_loc.inode) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "Failed to create reference to inode" - " for %s", uuid_utoa (p_loc.gfid)); - - *per_link_status = -1; - goto err; - } - - parent_path = tier_get_parent_path (this, &p_loc, &par_stbuf, - per_link_status); - if (!parent_path) { - goto err; - } - - linked_inode = inode_link (p_loc.inode, NULL, NULL, &par_stbuf); - inode_unref (p_loc.inode); - p_loc.inode = linked_inode; - - - /* Preparing File Inode */ - gf_uuid_copy (loc.gfid, gfid); - loc.inode = inode_new (defrag->root_inode->table); - gf_uuid_copy (loc.pargfid, link_info->pargfid); - loc.parent = inode_ref (p_loc.inode); - - /* Get filename and Construct file path */ - if (tier_get_file_name_and_path (this, gfid, link_info, - parent_path, &loc, per_link_status) != 0) { - goto err; - } - gf_uuid_copy (loc.parent->gfid, link_info->pargfid); - - /* lookup file inode */ - if (tier_lookup_file (this, &p_loc, &loc, - ¤t, per_link_status) != 0) { - goto err; - } - - if (query_cbk_args->is_promotion) { - if (!tier_can_promote_file (this, - link_info->file_name, - ¤t, - defrag)) { - *per_link_status = 1; - goto err; - } - } - - linked_inode = inode_link (loc.inode, NULL, NULL, ¤t); - inode_unref (loc.inode); - loc.inode = linked_inode; - - - /* - * Do not promote/demote if file already is where it - * should be. It means another brick moved the file - * so is not an error. So we set per_link_status = 1 - * so that we ignore counting this. - */ - src_subvol = dht_subvol_get_cached (this, loc.inode); - - if (tier_is_file_already_at_destination (src_subvol, query_cbk_args, - conf, per_link_status)) { - goto err; - } - - gf_msg_debug (this->name, 0, "Tier %s: src_subvol %s file %s", - (query_cbk_args->is_promotion ? "promote" : "demote"), - src_subvol->name, - loc.path); - - - ret = tier_check_same_node (this, &loc, defrag); - if (ret != 0) { - if (ret < 0) { - *per_link_status = -1; - goto err; - } - ret = 0; - /* By setting per_link_status to 1 we are - * ignoring this status and will not be counting - * this file for migration */ - *per_link_status = 1; - goto err; - } - - gf_uuid_copy (loc.gfid, loc.inode->gfid); - - if (gf_defrag_get_pause_state (&defrag->tier_conf) != TIER_RUNNING) { - gf_msg (this->name, GF_LOG_INFO, 0, - DHT_MSG_LOG_TIER_STATUS, - "Tiering paused. " - "Exiting tier_migrate_link"); - goto err; - } - - ret = tier_migrate (this, query_cbk_args->is_promotion, - migrate_data, &loc, &defrag->tier_conf); - - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, -ret, - DHT_MSG_LOG_TIER_ERROR, "Failed to " - "migrate %s ", loc.path); - *per_link_status = -1; - goto err; - } - - tier_update_migration_counters (query_cbk_args, defrag, - total_migrated_bytes, total_files); - - ret = 0; - -err: - GF_FREE ((char *) loc.name); - loc.name = NULL; - loc_wipe (&loc); - loc_wipe (&p_loc); - - if ((*total_files >= defrag->tier_conf.max_migrate_files) - || (*total_migrated_bytes > defrag->tier_conf.max_migrate_bytes)) { - gf_msg (this->name, GF_LOG_INFO, 0, - DHT_MSG_LOG_TIER_STATUS, - "Reached cycle migration limit." - "migrated bytes %"PRId64" files %d", - *total_migrated_bytes, - *total_files); - ret = -1; - } - - return ret; -} - - -static int -tier_migrate_using_query_file (void *_args) -{ - int ret = -1; - query_cbk_args_t *query_cbk_args = (query_cbk_args_t *) _args; - xlator_t *this = NULL; - gf_defrag_info_t *defrag = NULL; - gfdb_query_record_t *query_record = NULL; - gfdb_link_info_t *link_info = NULL; - dict_t *migrate_data = NULL; - /* - * per_file_status and per_link_status - * 0 : success - * -1 : failure - * 1 : ignore the status and dont count for migration - * */ - int per_file_status = 0; - int per_link_status = 0; - int total_status = 0; - dht_conf_t *conf = NULL; - uint64_t total_migrated_bytes = 0; - int total_files = 0; - loc_t root_loc = { 0 }; - gfdb_time_t start_time = { 0 }; - gfdb_time_t current_time = { 0 }; - int total_time = 0; - int max_time = 0; - gf_boolean_t emergency_demote_mode = _gf_false; - - - GF_VALIDATE_OR_GOTO ("tier", query_cbk_args, out); - GF_VALIDATE_OR_GOTO ("tier", query_cbk_args->this, out); - this = query_cbk_args->this; - GF_VALIDATE_OR_GOTO (this->name, query_cbk_args->defrag, out); - GF_VALIDATE_OR_GOTO (this->name, query_cbk_args->qfile_array, out); - GF_VALIDATE_OR_GOTO (this->name, this->private, out); - - conf = this->private; - - defrag = query_cbk_args->defrag; - migrate_data = dict_new (); - if (!migrate_data) - goto out; - - emergency_demote_mode = (!query_cbk_args->is_promotion && - is_hot_tier_full(&defrag->tier_conf)); - - if (tier_set_migrate_data (migrate_data) != 0) { - goto out; - } - - dht_build_root_loc (defrag->root_inode, &root_loc); - - ret = gettimeofday (&start_time, NULL); - if (query_cbk_args->is_promotion) { - max_time = defrag->tier_conf.tier_promote_frequency; - } else { - max_time = defrag->tier_conf.tier_demote_frequency; - } - - /* Per file */ - while ((ret = read_query_record_list (query_cbk_args->qfile_array, - &query_record)) != 0) { - - if (ret < 0) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "Failed to fetch query record " - "from query file"); - goto out; - } - - if (defrag->defrag_status != GF_DEFRAG_STATUS_STARTED) { - ret = -1; - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "Exiting tier migration as" - "defrag status is not started"); - goto out; - } - - ret = gettimeofday (¤t_time, NULL); - if (ret < 0) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "Could not get current time."); - goto out; - } - - total_time = current_time.tv_sec - start_time.tv_sec; - if (total_time > max_time) { - gf_msg (this->name, GF_LOG_INFO, 0, - DHT_MSG_LOG_TIER_STATUS, - "Max cycle time reached. Exiting migration."); - goto out; - } - - per_file_status = 0; - per_link_status = 0; - - if (gf_defrag_get_pause_state (&defrag->tier_conf) - != TIER_RUNNING) { - gf_msg (this->name, GF_LOG_INFO, 0, - DHT_MSG_LOG_TIER_STATUS, - "Tiering paused. " - "Exiting tier_migrate_using_query_file"); - break; - } - - if (defrag->tier_conf.mode == TIER_MODE_WM) { - ret = tier_get_fs_stat (this, &root_loc); - if (ret != 0) { - gfdb_methods.gfdb_query_record_free (query_record); - query_record = NULL; - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_STATUS, - "tier_get_fs_stat() FAILED ... " - "skipping file migrations until next cycle"); - break; - } - - if (!tier_do_migration (this, query_cbk_args->is_promotion)) { - gfdb_methods.gfdb_query_record_free (query_record); - query_record = NULL; - - /* We have crossed the high watermark. Stop processing - * files if this is a promotion cycle so demotion gets - * a chance to start if not already running*/ - - if (query_cbk_args->is_promotion && - is_hot_tier_full (&defrag->tier_conf)) { - - gf_msg (this->name, GF_LOG_INFO, 0, - DHT_MSG_LOG_TIER_STATUS, - "High watermark crossed during " - "promotion. Exiting " - "tier_migrate_using_query_file"); - break; - } - continue; - } - } - - per_link_status = 0; - - /* For now we only support single link migration. And we will - * ignore other hard links in the link info list of query record - * TODO: Multiple hard links migration */ - if (!list_empty (&query_record->link_list)) { - link_info = list_first_entry (&query_record->link_list, - gfdb_link_info_t, list); - } - if (link_info != NULL) { - if (tier_migrate_link (this, - conf, - query_record->gfid, - link_info, - defrag, - query_cbk_args, - migrate_data, - &per_link_status, - &total_files, - &total_migrated_bytes) != 0) { - gf_msg (this->name, GF_LOG_INFO, 0, - DHT_MSG_LOG_TIER_STATUS, - "%s failed for %s(gfid:%s)", - (query_cbk_args->is_promotion ? - "Promotion" : "Demotion"), - link_info->file_name, - uuid_utoa (query_record->gfid)); - } - } - per_file_status = per_link_status; - - if (per_file_status < 0) {/* Failure */ - pthread_mutex_lock (&dm_stat_mutex); - defrag->total_failures++; - pthread_mutex_unlock (&dm_stat_mutex); - } else if (per_file_status == 0) {/* Success */ - pthread_mutex_lock (&dm_stat_mutex); - defrag->total_files++; - pthread_mutex_unlock (&dm_stat_mutex); - } else if (per_file_status == 1) {/* Ignore */ - per_file_status = 0; - /* Since this attempt was ignored we - * decrement the lookup count*/ - pthread_mutex_lock (&dm_stat_mutex); - defrag->num_files_lookedup--; - pthread_mutex_unlock (&dm_stat_mutex); - } - total_status = total_status + per_file_status; - per_link_status = 0; - per_file_status = 0; - - gfdb_methods.gfdb_query_record_free (query_record); - query_record = NULL; - - /* If we are demoting and the entry watermark was HI, then - * we are done with emergency demotions if the current - * watermark has fallen below hi-watermark level - */ - if (emergency_demote_mode) { - if (tier_check_watermark (this) == 0) { - if (!is_hot_tier_full (&defrag->tier_conf)) { - break; - } - } - } - } - -out: - if (migrate_data) - dict_unref (migrate_data); - - gfdb_methods.gfdb_query_record_free (query_record); - query_record = NULL; - - return total_status; -} - - -/* This is the call back function per record/file from data base */ -static int -tier_gf_query_callback (gfdb_query_record_t *gfdb_query_record, - void *_args) { - int ret = -1; - query_cbk_args_t *query_cbk_args = _args; - - GF_VALIDATE_OR_GOTO ("tier", query_cbk_args, out); - GF_VALIDATE_OR_GOTO ("tier", query_cbk_args->defrag, out); - GF_VALIDATE_OR_GOTO ("tier", (query_cbk_args->query_fd > 0), out); - - ret = gfdb_methods.gfdb_write_query_record (query_cbk_args->query_fd, - gfdb_query_record); - if (ret) { - gf_msg ("tier", GF_LOG_ERROR, 0, DHT_MSG_LOG_TIER_ERROR, - "Failed writing query record to query file"); - goto out; - } - - pthread_mutex_lock (&dm_stat_mutex); - query_cbk_args->defrag->num_files_lookedup++; - pthread_mutex_unlock (&dm_stat_mutex); - - ret = 0; -out: - return ret; -} - - - - -/* Create query file in tier process */ -static int -tier_process_self_query (tier_brick_list_t *local_brick, void *args) -{ - int ret = -1; - char *db_path = NULL; - query_cbk_args_t *query_cbk_args = NULL; - xlator_t *this = NULL; - gfdb_conn_node_t *conn_node = NULL; - dict_t *params_dict = NULL; - dict_t *ctr_ipc_dict = NULL; - gfdb_brick_info_t *gfdb_brick_info = args; - - /*Init of all the essentials*/ - GF_VALIDATE_OR_GOTO ("tier", gfdb_brick_info , out); - query_cbk_args = gfdb_brick_info->_query_cbk_args; - - GF_VALIDATE_OR_GOTO ("tier", query_cbk_args->this, out); - this = query_cbk_args->this; - - GF_VALIDATE_OR_GOTO (this->name, - gfdb_brick_info->_query_cbk_args, out); - - GF_VALIDATE_OR_GOTO (this->name, local_brick, out); - - GF_VALIDATE_OR_GOTO (this->name, local_brick->xlator, out); - - GF_VALIDATE_OR_GOTO (this->name, local_brick->brick_db_path, out); - - db_path = local_brick->brick_db_path; - - /*Preparing DB parameters before init_db i.e getting db connection*/ - params_dict = dict_new (); - if (!params_dict) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "DB Params cannot initialized"); - goto out; - } - SET_DB_PARAM_TO_DICT(this->name, params_dict, - (char *) gfdb_methods.get_db_path_key(), - db_path, ret, out); - - /*Get the db connection*/ - conn_node = gfdb_methods.init_db ((void *)params_dict, dht_tier_db_type); - if (!conn_node) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "FATAL: Failed initializing db operations"); - goto out; - } - - /* Query for eligible files from db */ - query_cbk_args->query_fd = open (local_brick->qfile_path, - O_WRONLY | O_CREAT | O_APPEND, - S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH); - if (query_cbk_args->query_fd < 0) { - gf_msg (this->name, GF_LOG_ERROR, errno, - DHT_MSG_LOG_TIER_ERROR, - "Failed to open query file %s", - local_brick->qfile_path); - goto out; - } - if (!gfdb_brick_info->_gfdb_promote) { - if (query_cbk_args->defrag->tier_conf.watermark_last == - TIER_WM_HI) { - /* emergency demotion mode */ - ret = gfdb_methods.find_all (conn_node, - tier_gf_query_callback, - (void *)query_cbk_args, - query_cbk_args->defrag->tier_conf. - query_limit); - } else { - if (query_cbk_args->defrag->write_freq_threshold == 0 && - query_cbk_args->defrag->read_freq_threshold == 0) { - ret = gfdb_methods.find_unchanged_for_time ( - conn_node, - tier_gf_query_callback, - (void *)query_cbk_args, - gfdb_brick_info->time_stamp); - } else { - ret = gfdb_methods.find_unchanged_for_time_freq ( - conn_node, - tier_gf_query_callback, - (void *)query_cbk_args, - gfdb_brick_info->time_stamp, - query_cbk_args->defrag-> - write_freq_threshold, - query_cbk_args->defrag-> - read_freq_threshold, - _gf_false); - } - } - } else { - if (query_cbk_args->defrag->write_freq_threshold == 0 && - query_cbk_args->defrag->read_freq_threshold == 0) { - ret = gfdb_methods.find_recently_changed_files ( - conn_node, - tier_gf_query_callback, - (void *)query_cbk_args, - gfdb_brick_info->time_stamp); - } else { - ret = gfdb_methods.find_recently_changed_files_freq ( - conn_node, - tier_gf_query_callback, - (void *)query_cbk_args, - gfdb_brick_info->time_stamp, - query_cbk_args->defrag->write_freq_threshold, - query_cbk_args->defrag->read_freq_threshold, - _gf_false); - } - } - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "FATAL: query from db failed"); - goto out; - } - - /*Clear the heat on the DB entries*/ - /*Preparing ctr_ipc_dict*/ - ctr_ipc_dict = dict_new (); - if (!ctr_ipc_dict) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "ctr_ipc_dict cannot initialized"); - goto out; - } - - SET_DB_PARAM_TO_DICT(this->name, ctr_ipc_dict, - GFDB_IPC_CTR_KEY, GFDB_IPC_CTR_CLEAR_OPS, - ret, out); - - ret = syncop_ipc (local_brick->xlator, GF_IPC_TARGET_CTR, ctr_ipc_dict, - NULL); - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, "Failed clearing the heat " - "on db %s error %d", local_brick->brick_db_path, ret); - goto out; - } - - ret = 0; -out: - if (params_dict) { - dict_unref (params_dict); - params_dict = NULL; - } - - if (ctr_ipc_dict) { - dict_unref (ctr_ipc_dict); - ctr_ipc_dict = NULL; - } - - if (query_cbk_args && query_cbk_args->query_fd >= 0) { - sys_close (query_cbk_args->query_fd); - query_cbk_args->query_fd = -1; - } - gfdb_methods.fini_db (conn_node); - - return ret; -} - - - - - -/*Ask CTR to create the query file*/ -static int -tier_process_ctr_query (tier_brick_list_t *local_brick, void *args) -{ - int ret = -1; - query_cbk_args_t *query_cbk_args = NULL; - xlator_t *this = NULL; - dict_t *ctr_ipc_in_dict = NULL; - dict_t *ctr_ipc_out_dict = NULL; - gfdb_brick_info_t *gfdb_brick_info = args; - gfdb_ipc_ctr_params_t *ipc_ctr_params = NULL; - int count = 0; - - /*Init of all the essentials*/ - GF_VALIDATE_OR_GOTO ("tier", gfdb_brick_info , out); - query_cbk_args = gfdb_brick_info->_query_cbk_args; - - GF_VALIDATE_OR_GOTO ("tier", query_cbk_args->this, out); - this = query_cbk_args->this; - - GF_VALIDATE_OR_GOTO (this->name, - gfdb_brick_info->_query_cbk_args, out); - - GF_VALIDATE_OR_GOTO (this->name, local_brick, out); - - GF_VALIDATE_OR_GOTO (this->name, local_brick->xlator, out); - - GF_VALIDATE_OR_GOTO (this->name, local_brick->brick_db_path, out); - - - /*Preparing ctr_ipc_in_dict*/ - ctr_ipc_in_dict = dict_new (); - if (!ctr_ipc_in_dict) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "ctr_ipc_in_dict cannot initialized"); - goto out; - } - - ipc_ctr_params = GF_CALLOC (1, sizeof (gfdb_ipc_ctr_params_t), - gf_tier_mt_ipc_ctr_params_t); - if (!ipc_ctr_params) { - goto out; - } - - /* set all the query params*/ - ipc_ctr_params->is_promote = gfdb_brick_info->_gfdb_promote; - - ipc_ctr_params->write_freq_threshold = - query_cbk_args->defrag->write_freq_threshold; - - ipc_ctr_params->read_freq_threshold = - query_cbk_args->defrag->read_freq_threshold; - - ipc_ctr_params->query_limit = - query_cbk_args->defrag->tier_conf.query_limit; - - ipc_ctr_params->emergency_demote = - (!gfdb_brick_info->_gfdb_promote && - query_cbk_args->defrag->tier_conf.watermark_last == - TIER_WM_HI); - - memcpy (&ipc_ctr_params->time_stamp, - gfdb_brick_info->time_stamp, - sizeof (gfdb_time_t)); - - SET_DB_PARAM_TO_DICT (this->name, ctr_ipc_in_dict, - GFDB_IPC_CTR_KEY, GFDB_IPC_CTR_QUERY_OPS, - ret, out); - - - SET_DB_PARAM_TO_DICT (this->name, ctr_ipc_in_dict, - GFDB_IPC_CTR_GET_QFILE_PATH, - local_brick->qfile_path, - ret, out); - - ret = dict_set_bin (ctr_ipc_in_dict, GFDB_IPC_CTR_GET_QUERY_PARAMS, - ipc_ctr_params, sizeof (*ipc_ctr_params)); - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, 0, LG_MSG_SET_PARAM_FAILED, - "Failed setting %s to params dictionary", - GFDB_IPC_CTR_GET_QUERY_PARAMS); - GF_FREE (ipc_ctr_params); - goto out; - } - ipc_ctr_params = NULL; - - ret = syncop_ipc (local_brick->xlator, GF_IPC_TARGET_CTR, - ctr_ipc_in_dict, &ctr_ipc_out_dict); - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_IPC_TIER_ERROR, "Failed query on %s ret %d", - local_brick->brick_db_path, ret); - goto out; - } - - ret = dict_get_int32(ctr_ipc_out_dict, GFDB_IPC_CTR_RET_QUERY_COUNT, - &count); - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, "Failed getting count " - "of records on %s", - local_brick->brick_db_path); - goto out; - } - - if (count < 0) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, "Failed query on %s", - local_brick->brick_db_path); - ret = -1; - goto out; - } - - pthread_mutex_lock (&dm_stat_mutex); - query_cbk_args->defrag->num_files_lookedup = count; - pthread_mutex_unlock (&dm_stat_mutex); - - ret = 0; -out: - - if (ctr_ipc_in_dict) { - dict_unref(ctr_ipc_in_dict); - ctr_ipc_in_dict = NULL; - } - - if (ctr_ipc_out_dict) { - dict_unref(ctr_ipc_out_dict); - ctr_ipc_out_dict = NULL; - } - - GF_FREE (ipc_ctr_params); - - return ret; -} - - - - -/* This is the call back function for each brick from hot/cold bricklist - * It picks up each bricks db and queries for eligible files for migration. - * The list of eligible files are populated in appropriate query files*/ -static int -tier_process_brick (tier_brick_list_t *local_brick, void *args) { - int ret = -1; - dict_t *ctr_ipc_in_dict = NULL; - dict_t *ctr_ipc_out_dict = NULL; - char *strval = NULL; - - GF_VALIDATE_OR_GOTO ("tier", local_brick, out); - - GF_VALIDATE_OR_GOTO ("tier", local_brick->xlator, out); - - if (dht_tier_db_type == GFDB_SQLITE3) { - - /*Preparing ctr_ipc_in_dict*/ - ctr_ipc_in_dict = dict_new (); - if (!ctr_ipc_in_dict) { - gf_msg ("tier", GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "ctr_ipc_in_dict cannot initialized"); - goto out; - } - - ret = dict_set_str (ctr_ipc_in_dict, GFDB_IPC_CTR_KEY, - GFDB_IPC_CTR_GET_DB_PARAM_OPS); - if (ret) { - gf_msg ("tier", GF_LOG_ERROR, 0,\ - LG_MSG_SET_PARAM_FAILED, "Failed to set %s " - "to params dictionary", GFDB_IPC_CTR_KEY); - goto out; - } - - ret = dict_set_str (ctr_ipc_in_dict, - GFDB_IPC_CTR_GET_DB_PARAM_OPS, ""); - if (ret) { - gf_msg ("tier", GF_LOG_ERROR, 0,\ - LG_MSG_SET_PARAM_FAILED, "Failed to set %s " - "to params dictionary", - GFDB_IPC_CTR_GET_DB_PARAM_OPS); - goto out; - } - - ret = dict_set_str (ctr_ipc_in_dict, - GFDB_IPC_CTR_GET_DB_KEY, "journal_mode"); - if (ret) { - gf_msg ("tier", GF_LOG_ERROR, 0, - LG_MSG_SET_PARAM_FAILED, "Failed to set %s " - "to params dictionary", - GFDB_IPC_CTR_GET_DB_KEY); - goto out; - } - - - - ret = syncop_ipc (local_brick->xlator, GF_IPC_TARGET_CTR, - ctr_ipc_in_dict, &ctr_ipc_out_dict); - if (ret || ctr_ipc_out_dict == NULL) { - gf_msg ("tier", GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, "Failed to get " - "journal_mode of sql db %s", - local_brick->brick_db_path); - goto out; - } - - ret = dict_get_str (ctr_ipc_out_dict, "journal_mode", &strval); - if (ret) { - gf_msg ("tier", GF_LOG_ERROR, 0, - LG_MSG_GET_PARAM_FAILED, "Failed to get %s " - "from params dictionary" - "journal_mode", strval); - goto out; - } - - if (strval && (strncmp(strval, "wal", strlen ("wal")) == 0)) { - ret = tier_process_self_query (local_brick, args); - if (ret) { - goto out; - } - } else { - ret = tier_process_ctr_query (local_brick, args); - if (ret) { - goto out; - } - } - ret = 0; - - } else { - ret = tier_process_self_query (local_brick, args); - if (ret) { - goto out; - } - } - - ret = 0; -out: - if (ctr_ipc_in_dict) - dict_unref (ctr_ipc_in_dict); - - if (ctr_ipc_out_dict) - dict_unref (ctr_ipc_out_dict); - - return ret; -} - - - - -static int -tier_build_migration_qfile (migration_args_t *args, - query_cbk_args_t *query_cbk_args, - gf_boolean_t is_promotion) -{ - gfdb_time_t current_time; - gfdb_brick_info_t gfdb_brick_info; - gfdb_time_t time_in_past; - int ret = -1; - tier_brick_list_t *local_brick = NULL; - int i = 0; - time_in_past.tv_sec = args->freq_time; - time_in_past.tv_usec = 0; - - ret = gettimeofday (¤t_time, NULL); - if (ret == -1) { - gf_msg (args->this->name, GF_LOG_ERROR, errno, - DHT_MSG_SYS_CALL_GET_TIME_FAILED, - "Failed to get current time"); - goto out; - } - time_in_past.tv_sec = current_time.tv_sec - time_in_past.tv_sec; - - /* The migration daemon may run a varying numberof usec after the */ - /* sleep call triggers. A file may be registered in CTR some number */ - /* of usec X after the daemon started and missed in the subsequent */ - /* cycle if the daemon starts Y usec after the period in seconds */ - /* where Y>X. Normalize away this problem by always setting usec */ - /* to 0. */ - time_in_past.tv_usec = 0; - - gfdb_brick_info.time_stamp = &time_in_past; - gfdb_brick_info._gfdb_promote = is_promotion; - gfdb_brick_info._query_cbk_args = query_cbk_args; - - list_for_each_entry (local_brick, args->brick_list, list) { - - /* Construct query file path for this brick - * i.e - * /var/run/gluster/xlator_name/ - * {promote/demote}-brickname-indexinbricklist - * So that no two query files will have same path even - * bricks have the same name - * */ - snprintf (local_brick->qfile_path, PATH_MAX , "%s-%s-%d", - GET_QFILE_PATH (gfdb_brick_info._gfdb_promote), - local_brick->brick_name, i); - - /* Delete any old query files for this brick */ - sys_unlink (local_brick->qfile_path); - - ret = tier_process_brick (local_brick, - &gfdb_brick_info); - if (ret) { - gf_msg (args->this->name, GF_LOG_ERROR, 0, - DHT_MSG_BRICK_QUERY_FAILED, - "Brick %s query failed\n", - local_brick->brick_db_path); - } - i++; - } - ret = 0; -out: - return ret; -} - -static int -tier_migrate_files_using_qfile (migration_args_t *comp, - query_cbk_args_t *query_cbk_args) -{ - int ret = -1; - tier_brick_list_t *local_brick = NULL; - tier_brick_list_t *temp = NULL; - char query_file_path_err[PATH_MAX+128] = {0,}; - struct tm tm = {0,}; - gfdb_time_t current_time = {0,}; - char time_str[128] = {0,}; - ssize_t qfile_array_size = 0; - int count = 0; - int temp_fd = 0; - gf_tier_conf_t *tier_conf = NULL; - - tier_conf = &(query_cbk_args->defrag->tier_conf); - - /* Time format for error query files */ - gettimeofday (¤t_time, NULL); - gmtime_r (¤t_time.tv_sec, &tm); - strftime (time_str, sizeof (time_str), "%F-%T", &tm); - - /* Build the qfile list */ - list_for_each_entry_safe (local_brick, temp, comp->brick_list, list) { - qfile_array_size++; - } - query_cbk_args->qfile_array = qfile_array_new (qfile_array_size); - if (!query_cbk_args->qfile_array) { - gf_msg ("tier", GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, "Failed to create new " - "qfile_array"); - goto out; - } - - /*Open all qfiles*/ - count = 0; - query_cbk_args->qfile_array->exhausted_count = 0; - list_for_each_entry_safe (local_brick, temp, comp->brick_list, list) { - temp_fd = query_cbk_args->qfile_array->fd_array[count]; - temp_fd = open (local_brick->qfile_path, O_RDONLY, - S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH); - if (temp_fd < 0) { - gf_msg ("tier", GF_LOG_ERROR, errno, - DHT_MSG_LOG_TIER_ERROR, "Failed to open " - "%s to the query file", - local_brick->qfile_path); - query_cbk_args->qfile_array->exhausted_count++; - } - query_cbk_args->qfile_array->fd_array[count] = temp_fd; - count++; - } - - /* Moving the query file index to the next, so that we won't the same - * query file every cycle as the first one */ - query_cbk_args->qfile_array->next_index = - (query_cbk_args->is_promotion) ? - tier_conf->last_promote_qfile_index : - tier_conf->last_demote_qfile_index; - shift_next_index (query_cbk_args->qfile_array); - if (query_cbk_args->is_promotion) { - tier_conf->last_promote_qfile_index = - query_cbk_args->qfile_array->next_index; - } else { - tier_conf->last_demote_qfile_index = - query_cbk_args->qfile_array->next_index; - } - - /* Migrate files using query file list */ - ret = tier_migrate_using_query_file ((void *)query_cbk_args); -out: - qfile_array_free (query_cbk_args->qfile_array); - - /* If there is an error rename all the query files to .err files - * with a timestamp for better debugging */ - if (ret) { - list_for_each_entry_safe (local_brick, temp, comp->brick_list, - list) { - /* rename error qfile*/ - snprintf (query_file_path_err, - sizeof (query_file_path_err), - "%s-%s.err", local_brick->qfile_path, - time_str); - if (sys_rename (local_brick->qfile_path, - query_file_path_err) == -1) - gf_msg_debug ("tier", 0, "rename " - "failed"); - } - } - - query_cbk_args->qfile_array = NULL; - - return ret; -} - - - -int -tier_demote (migration_args_t *demotion_args) -{ - query_cbk_args_t query_cbk_args; - int ret = -1; - - GF_VALIDATE_OR_GOTO ("tier", demotion_args, out); - GF_VALIDATE_OR_GOTO ("tier", demotion_args->this, out); - GF_VALIDATE_OR_GOTO (demotion_args->this->name, - demotion_args->brick_list, out); - GF_VALIDATE_OR_GOTO (demotion_args->this->name, - demotion_args->defrag, out); - - THIS = demotion_args->this; - - query_cbk_args.this = demotion_args->this; - query_cbk_args.defrag = demotion_args->defrag; - query_cbk_args.is_promotion = 0; - - /*Build the query file using bricklist*/ - ret = tier_build_migration_qfile (demotion_args, &query_cbk_args, - _gf_false); - if (ret) - goto out; - - /* Migrate files using the query file */ - ret = tier_migrate_files_using_qfile (demotion_args, - &query_cbk_args); - if (ret) - goto out; - -out: - demotion_args->return_value = ret; - return ret; -} - - -int -tier_promote (migration_args_t *promotion_args) -{ - int ret = -1; - query_cbk_args_t query_cbk_args; - - GF_VALIDATE_OR_GOTO ("tier", promotion_args->this, out); - GF_VALIDATE_OR_GOTO (promotion_args->this->name, - promotion_args->brick_list, out); - GF_VALIDATE_OR_GOTO (promotion_args->this->name, - promotion_args->defrag, out); - - THIS = promotion_args->this; - - query_cbk_args.this = promotion_args->this; - query_cbk_args.defrag = promotion_args->defrag; - query_cbk_args.is_promotion = 1; - - /*Build the query file using bricklist*/ - ret = tier_build_migration_qfile (promotion_args, &query_cbk_args, - _gf_true); - if (ret) - goto out; - - /* Migrate files using the query file */ - ret = tier_migrate_files_using_qfile (promotion_args, &query_cbk_args); - if (ret) - goto out; - -out: - promotion_args->return_value = ret; - return ret; -} - - -/* - * Command the CTR on a brick to compact the local database using an IPC - */ -static int -tier_process_self_compact (tier_brick_list_t *local_brick, void *args) -{ - int ret = -1; - char *db_path = NULL; - query_cbk_args_t *query_cbk_args = NULL; - xlator_t *this = NULL; - gfdb_conn_node_t *conn_node = NULL; - dict_t *params_dict = NULL; - dict_t *ctr_ipc_dict = NULL; - gfdb_brick_info_t *gfdb_brick_info = args; - - /*Init of all the essentials*/ - GF_VALIDATE_OR_GOTO ("tier", gfdb_brick_info , out); - query_cbk_args = gfdb_brick_info->_query_cbk_args; - - GF_VALIDATE_OR_GOTO ("tier", query_cbk_args->this, out); - this = query_cbk_args->this; - - GF_VALIDATE_OR_GOTO (this->name, - gfdb_brick_info->_query_cbk_args, out); - - GF_VALIDATE_OR_GOTO (this->name, local_brick, out); - - GF_VALIDATE_OR_GOTO (this->name, local_brick->xlator, out); - - GF_VALIDATE_OR_GOTO (this->name, local_brick->brick_db_path, out); - - db_path = local_brick->brick_db_path; - - /*Preparing DB parameters before init_db i.e getting db connection*/ - params_dict = dict_new (); - if (!params_dict) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "DB Params cannot initialized"); - goto out; - } - SET_DB_PARAM_TO_DICT (this->name, params_dict, - (char *) gfdb_methods.get_db_path_key(), db_path, - ret, out); - - /*Get the db connection*/ - conn_node = gfdb_methods.init_db ((void *)params_dict, - dht_tier_db_type); - if (!conn_node) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "FATAL: Failed initializing db operations"); - goto out; - } - - ret = 0; - - /*Preparing ctr_ipc_dict*/ - ctr_ipc_dict = dict_new (); - if (!ctr_ipc_dict) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "ctr_ipc_dict cannot initialized"); - goto out; - } - - ret = dict_set_int32 (ctr_ipc_dict, "compact_active", - query_cbk_args->defrag-> - tier_conf.compact_active); - - if (ret) { - gf_msg ("tier", GF_LOG_ERROR, 0, - LG_MSG_SET_PARAM_FAILED, "Failed to set %s " - "to params dictionary", - "compact_active"); - goto out; - } - - ret = dict_set_int32 (ctr_ipc_dict, "compact_mode_switched", - query_cbk_args->defrag-> - tier_conf.compact_mode_switched); - - if (ret) { - gf_msg ("tier", GF_LOG_ERROR, 0, - LG_MSG_SET_PARAM_FAILED, "Failed to set %s " - "to params dictionary", - "compact_mode_switched"); - goto out; - } - - SET_DB_PARAM_TO_DICT(this->name, ctr_ipc_dict, - GFDB_IPC_CTR_KEY, GFDB_IPC_CTR_SET_COMPACT_PRAGMA, - ret, out); - - gf_msg (this->name, GF_LOG_TRACE, 0, DHT_MSG_LOG_TIER_STATUS, - "Starting Compaction IPC"); - - ret = syncop_ipc (local_brick->xlator, GF_IPC_TARGET_CTR, ctr_ipc_dict, - NULL); - - gf_msg (this->name, GF_LOG_TRACE, 0, DHT_MSG_LOG_TIER_STATUS, - "Ending Compaction IPC"); - - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, "Failed compaction " - "on db %s error %d", local_brick->brick_db_path, ret); - goto out; - } - - gf_msg (this->name, GF_LOG_TRACE, 0, DHT_MSG_LOG_TIER_STATUS, - "SUCCESS: %s Compaction", local_brick->brick_name); - - ret = 0; -out: - if (params_dict) { - dict_unref (params_dict); - params_dict = NULL; - } - - if (ctr_ipc_dict) { - dict_unref (ctr_ipc_dict); - ctr_ipc_dict = NULL; - } - - gfdb_methods.fini_db (conn_node); - - return ret; -} - -/* - * This is the call back function for each brick from hot/cold bricklist. - * It determines the database type on each brick and calls the corresponding - * function to prepare the compaction IPC. - */ -static int -tier_compact_db_brick (tier_brick_list_t *local_brick, void *args) -{ - int ret = -1; - - GF_VALIDATE_OR_GOTO ("tier", local_brick, out); - - GF_VALIDATE_OR_GOTO ("tier", local_brick->xlator, out); - - ret = tier_process_self_compact (local_brick, args); - if (ret) { - gf_msg ("tier", GF_LOG_INFO, 0, - DHT_MSG_LOG_TIER_STATUS, - "Brick %s did not compact", - local_brick->brick_name); - goto out; - } - - ret = 0; - -out: - - return ret; -} - -static int -tier_send_compact (migration_args_t *args, - query_cbk_args_t *query_cbk_args) -{ - gfdb_time_t current_time; - gfdb_brick_info_t gfdb_brick_info; - gfdb_time_t time_in_past; - int ret = -1; - tier_brick_list_t *local_brick = NULL; - - time_in_past.tv_sec = args->freq_time; - time_in_past.tv_usec = 0; - - ret = gettimeofday (¤t_time, NULL); - if (ret == -1) { - gf_msg (args->this->name, GF_LOG_ERROR, errno, - DHT_MSG_SYS_CALL_GET_TIME_FAILED, - "Failed to get current time"); - goto out; - } - time_in_past.tv_sec = current_time.tv_sec - time_in_past.tv_sec; - - /* The migration daemon may run a varying numberof usec after the sleep - call triggers. A file may be registered in CTR some number of usec X - after the daemon started and missed in the subsequent cycle if the - daemon starts Y usec after the period in seconds where Y>X. Normalize - away this problem by always setting usec to 0. */ - time_in_past.tv_usec = 0; - - gfdb_brick_info.time_stamp = &time_in_past; - - /* This is meant to say we are always compacting at this point */ - /* We simply borrow the promotion flag to do this */ - gfdb_brick_info._gfdb_promote = 1; - - gfdb_brick_info._query_cbk_args = query_cbk_args; - - list_for_each_entry (local_brick, args->brick_list, list) { - - gf_msg (args->this->name, GF_LOG_TRACE, 0, - DHT_MSG_LOG_TIER_STATUS, - "Start compaction for %s", - local_brick->brick_name); - - ret = tier_compact_db_brick (local_brick, - &gfdb_brick_info); - if (ret) { - gf_msg (args->this->name, GF_LOG_ERROR, 0, - DHT_MSG_BRICK_QUERY_FAILED, - "Brick %s compaction failed\n", - local_brick->brick_db_path); - } - - gf_msg (args->this->name, GF_LOG_TRACE, 0, - DHT_MSG_LOG_TIER_STATUS, - "End compaction for %s", - local_brick->brick_name); - - } - ret = 0; -out: - return ret; -} - -static int -tier_compact (void *args) -{ - int ret = -1; - query_cbk_args_t query_cbk_args; - migration_args_t *compaction_args = args; - - GF_VALIDATE_OR_GOTO ("tier", compaction_args->this, out); - GF_VALIDATE_OR_GOTO (compaction_args->this->name, - compaction_args->brick_list, out); - GF_VALIDATE_OR_GOTO (compaction_args->this->name, - compaction_args->defrag, out); - - THIS = compaction_args->this; - - query_cbk_args.this = compaction_args->this; - query_cbk_args.defrag = compaction_args->defrag; - query_cbk_args.is_compaction = 1; - - /* Send the compaction pragma out to all the bricks on the bricklist. */ - /* tier_get_bricklist ensures all bricks on the list are local to */ - /* this node. */ - ret = tier_send_compact (compaction_args, &query_cbk_args); - if (ret) - goto out; - - ret = 0; -out: - compaction_args->return_value = ret; - return ret; - } - -static int -tier_get_bricklist (xlator_t *xl, struct list_head *local_bricklist_head) -{ - xlator_list_t *child = NULL; - char *rv = NULL; - char *rh = NULL; - char *brickname = NULL; - char db_name[PATH_MAX] = ""; - int ret = 0; - tier_brick_list_t *local_brick = NULL; - - GF_VALIDATE_OR_GOTO ("tier", xl, out); - GF_VALIDATE_OR_GOTO ("tier", local_bricklist_head, out); - - /* - * This function obtains remote subvolumes and filters out only - * those running on the same node as the tier daemon. - */ - if (strcmp(xl->type, "protocol/client") == 0) { - ret = dict_get_str (xl->options, "remote-host", &rh); - if (ret < 0) - goto out; - - if (gf_is_local_addr (rh)) { - - local_brick = GF_CALLOC (1, sizeof(tier_brick_list_t), - gf_tier_mt_bricklist_t); - if (!local_brick) { - goto out; - } - - ret = dict_get_str (xl->options, "remote-subvolume", - &rv); - if (ret < 0) - goto out; - - brickname = strrchr(rv, '/') + 1; - snprintf(db_name, sizeof(db_name), "%s.db", - brickname); - - local_brick->brick_db_path = - GF_CALLOC (PATH_MAX, 1, gf_common_mt_char); - if (!local_brick->brick_db_path) { - gf_msg ("tier", GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_STATUS, - "Failed to allocate memory for" - " bricklist."); - goto out; - } - - snprintf(local_brick->brick_db_path, - PATH_MAX, "%s/%s/%s", rv, - GF_HIDDEN_PATH, db_name); - - local_brick->xlator = xl; - - snprintf (local_brick->brick_name, - NAME_MAX, "%s", brickname); - - list_add_tail (&(local_brick->list), - local_bricklist_head); - - ret = 0; - goto out; - } - } - - for (child = xl->children; child; child = child->next) { - ret = tier_get_bricklist (child->xlator, local_bricklist_head); - if (ret) { - goto out; - } - } - - ret = 0; -out: - - if (ret) { - if (local_brick) { - GF_FREE (local_brick->brick_db_path); - } - GF_FREE (local_brick); - } - - return ret; -} - -int -tier_get_freq_demote (gf_tier_conf_t *tier_conf) -{ - if ((tier_conf->mode == TIER_MODE_WM) && - (tier_conf->watermark_last == TIER_WM_HI)) - return DEFAULT_DEMOTE_DEGRADED; - else - return tier_conf->tier_demote_frequency; -} - -int -tier_get_freq_promote (gf_tier_conf_t *tier_conf) -{ - return tier_conf->tier_promote_frequency; -} - -int -tier_get_freq_compact_hot (gf_tier_conf_t *tier_conf) -{ - return tier_conf->tier_compact_hot_frequency; -} - -int -tier_get_freq_compact_cold (gf_tier_conf_t *tier_conf) -{ - return tier_conf->tier_compact_cold_frequency; -} - -static int -tier_check_demote (gfdb_time_t current_time, int freq) -{ - return ((current_time.tv_sec % freq) == 0) ? - _gf_true : _gf_false; -} - -static gf_boolean_t -tier_check_promote (gf_tier_conf_t *tier_conf, - gfdb_time_t current_time, - int freq) -{ - if ((tier_conf->mode == TIER_MODE_WM) && - (tier_conf->watermark_last == TIER_WM_HI)) - return _gf_false; - - else - return ((current_time.tv_sec % freq) == 0) ? - _gf_true : _gf_false; -} - -static gf_boolean_t -tier_check_compact (gf_tier_conf_t *tier_conf, - gfdb_time_t current_time, - int freq_compact) -{ - - if (!(tier_conf->compact_active || - tier_conf->compact_mode_switched)) - return _gf_false; - - - return ((current_time.tv_sec % freq_compact) == 0) ? - _gf_true : _gf_false; -} - - -void -clear_bricklist (struct list_head *brick_list) -{ - tier_brick_list_t *local_brick = NULL; - tier_brick_list_t *temp = NULL; - - if (list_empty(brick_list)) { - return; - } - - list_for_each_entry_safe (local_brick, temp, brick_list, list) { - list_del (&local_brick->list); - GF_FREE (local_brick->brick_db_path); - GF_FREE (local_brick); - } -} - - -static void -set_brick_list_qpath (struct list_head *brick_list, gf_boolean_t is_cold) -{ - - tier_brick_list_t *local_brick = NULL; - int i = 0; - - GF_VALIDATE_OR_GOTO ("tier", brick_list, out); - - list_for_each_entry (local_brick, brick_list, list) { - - /* Construct query file path for this brick - * i.e - * /var/run/gluster/xlator_name/ - * {promote/demote}-brickname-indexinbricklist - * So that no two query files will have same path even - * bricks have the same name - * */ - snprintf (local_brick->qfile_path, PATH_MAX , "%s-%s-%d", - GET_QFILE_PATH (is_cold), - local_brick->brick_name, i); - i++; - } -out: - return; -} - -static int -tier_prepare_compact (migration_args_t *args, gfdb_time_t current_time) -{ - xlator_t *this = NULL; - dht_conf_t *conf = NULL; - gf_defrag_info_t *defrag = NULL; - gf_tier_conf_t *tier_conf = NULL; - gf_boolean_t is_hot_tier = args->is_hot_tier; - int freq = 0; - int ret = -1; - const char *tier_type = is_hot_tier ? "hot" : "cold"; - - this = args->this; - - conf = this->private; - - defrag = conf->defrag; - - tier_conf = &defrag->tier_conf; - - freq = is_hot_tier ? tier_get_freq_compact_hot (tier_conf) : - tier_get_freq_compact_cold (tier_conf); - - defrag->tier_conf.compact_mode_switched = is_hot_tier ? - defrag->tier_conf.compact_mode_switched_hot : - defrag->tier_conf.compact_mode_switched_cold; - - gf_msg(this->name, GF_LOG_TRACE, 0, - DHT_MSG_LOG_TIER_STATUS, - "Compact mode %i", - defrag->tier_conf.compact_mode_switched); - - if (tier_check_compact (tier_conf, current_time, - freq)) { - gf_msg (this->name, GF_LOG_INFO, 0, - DHT_MSG_LOG_TIER_STATUS, - "Start compaction on %s tier", - tier_type); - - args->freq_time = freq; - ret = tier_compact (args); - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, "Compaction failed on " - "%s tier", tier_type); - goto out; - } - - gf_msg (this->name, GF_LOG_INFO, 0, DHT_MSG_LOG_TIER_STATUS, - "End compaction on %s tier", tier_type); - - if (is_hot_tier) { - defrag->tier_conf.compact_mode_switched_hot = - _gf_false; - } else { - defrag->tier_conf.compact_mode_switched_cold = - _gf_false; - } - } - -out: - return ret; -} - -static int -tier_get_wm_interval(tier_mode_t mode, tier_watermark_op_t wm) -{ - if (mode == TIER_MODE_WM && wm == TIER_WM_HI) - return WM_INTERVAL_EMERG; - - return WM_INTERVAL; -} - -/* - * Main tiering loop. This is called from the promotion and the - * demotion threads spawned in tier_start(). - * - * Every second, wake from sleep to perform tasks. - * 1. Check trigger to migrate data. - * 2. Check for state changes (pause, unpause, stop). - */ -static void -*tier_run (void *in_args) -{ - dht_conf_t *conf = NULL; - gfdb_time_t current_time = { 0 }; - int freq = 0; - int ret = 0; - xlator_t *any = NULL; - xlator_t *xlator = NULL; - gf_tier_conf_t *tier_conf = NULL; - loc_t root_loc = { 0 }; - int check_watermark = 0; - gf_defrag_info_t *defrag = NULL; - xlator_t *this = NULL; - migration_args_t *args = in_args; - GF_VALIDATE_OR_GOTO ("tier", args, out); - GF_VALIDATE_OR_GOTO ("tier", args->brick_list, out); - - this = args->this; - GF_VALIDATE_OR_GOTO ("tier", this, out); - - conf = this->private; - GF_VALIDATE_OR_GOTO ("tier", conf, out); - - defrag = conf->defrag; - GF_VALIDATE_OR_GOTO ("tier", defrag, out); - - if (list_empty (args->brick_list)) { - gf_msg (this->name, GF_LOG_INFO, 0, - DHT_MSG_LOG_TIER_ERROR, - "Brick list for tier is empty. Exiting."); - goto out; - } - - defrag->defrag_status = GF_DEFRAG_STATUS_STARTED; - tier_conf = &defrag->tier_conf; - - dht_build_root_loc (defrag->root_inode, &root_loc); - - while (1) { - - /* - * Check if a graph switch occured. If so, stop migration - * thread. It will need to be restarted manually. - */ - any = THIS->ctx->active->first; - xlator = xlator_search_by_name (any, this->name); - - if (xlator != this) { - gf_msg (this->name, GF_LOG_INFO, 0, - DHT_MSG_LOG_TIER_STATUS, - "Detected graph switch. Exiting migration " - "daemon."); - goto out; - } - - gf_defrag_check_pause_tier (tier_conf); - - sleep(1); - - if (defrag->defrag_status != GF_DEFRAG_STATUS_STARTED) { - ret = 1; - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "defrag->defrag_status != " - "GF_DEFRAG_STATUS_STARTED"); - goto out; - } - - if (defrag->cmd == GF_DEFRAG_CMD_START_DETACH_TIER || - defrag->cmd == GF_DEFRAG_CMD_DETACH_START) { - ret = 0; - defrag->defrag_status = - GF_DEFRAG_STATUS_COMPLETE; - gf_msg (this->name, GF_LOG_DEBUG, 0, - DHT_MSG_LOG_TIER_ERROR, - "defrag->defrag_cmd == " - "GF_DEFRAG_CMD_START_DETACH_TIER"); - goto out; - } - - if (gf_defrag_get_pause_state (&defrag->tier_conf) != - TIER_RUNNING) - continue; - - /* To have proper synchronization amongst all - * brick holding nodes, so that promotion and demotions - * start atomicly w.r.t promotion/demotion frequency - * period, all nodes should have thier system time - * in-sync with each other either manually set or - * using a NTP server*/ - ret = gettimeofday (¤t_time, NULL); - if (ret == -1) { - gf_msg (this->name, GF_LOG_ERROR, errno, - DHT_MSG_SYS_CALL_GET_TIME_FAILED, - "Failed to get current time"); - goto out; - } - - check_watermark++; - - /* emergency demotion requires frequent watermark monitoring */ - if (check_watermark >= - tier_get_wm_interval(tier_conf->mode, - tier_conf->watermark_last)) { - check_watermark = 0; - if (tier_conf->mode == TIER_MODE_WM) { - ret = tier_get_fs_stat (this, &root_loc); - if (ret != 0) { - continue; - } - ret = tier_check_watermark (this); - if (ret != 0) { - gf_msg (this->name, GF_LOG_CRITICAL, errno, - DHT_MSG_LOG_TIER_ERROR, - "Failed to get watermark"); - continue; - } - } - } - - if (args->is_promotion) { - freq = tier_get_freq_promote (tier_conf); - - if (tier_check_promote (tier_conf, current_time, freq)) { - args->freq_time = freq; - ret = tier_promote (args); - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "Promotion failed"); - } - } - } else if (args->is_compaction) { - tier_prepare_compact (args, current_time); - } else { - freq = tier_get_freq_demote (tier_conf); - - if (tier_check_demote (current_time, freq)) { - args->freq_time = freq; - ret = tier_demote (args); - if (ret) { - gf_msg (this->name, - GF_LOG_ERROR, - 0, - DHT_MSG_LOG_TIER_ERROR, - "Demotion failed"); - } - } - } - - /* Check the statfs immediately after the processing threads - return */ - check_watermark = WM_INTERVAL; - } - - ret = 0; -out: - - args->return_value = ret; - - return NULL; -} - -int -tier_start (xlator_t *this, gf_defrag_info_t *defrag) -{ - pthread_t promote_thread; - pthread_t demote_thread; - pthread_t hot_compact_thread; - pthread_t cold_compact_thread; - int ret = -1; - struct list_head bricklist_hot = { 0 }; - struct list_head bricklist_cold = { 0 }; - migration_args_t promotion_args = { 0 }; - migration_args_t demotion_args = { 0 }; - migration_args_t hot_compaction_args = { 0 }; - migration_args_t cold_compaction_args = { 0 }; - dht_conf_t *conf = NULL; - - INIT_LIST_HEAD ((&bricklist_hot)); - INIT_LIST_HEAD ((&bricklist_cold)); - - conf = this->private; - - tier_get_bricklist (conf->subvolumes[1], &bricklist_hot); - set_brick_list_qpath (&bricklist_hot, _gf_false); - - demotion_args.this = this; - demotion_args.brick_list = &bricklist_hot; - demotion_args.defrag = defrag; - demotion_args.is_promotion = _gf_false; - demotion_args.is_compaction = _gf_false; - - ret = gf_thread_create (&demote_thread, - NULL, &tier_run, &demotion_args, "tierdem"); - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "Failed to start demotion thread."); - defrag->defrag_status = GF_DEFRAG_STATUS_FAILED; - goto cleanup; - } - - tier_get_bricklist (conf->subvolumes[0], &bricklist_cold); - set_brick_list_qpath (&bricklist_cold, _gf_true); - - promotion_args.this = this; - promotion_args.brick_list = &bricklist_cold; - promotion_args.defrag = defrag; - promotion_args.is_promotion = _gf_true; - - ret = gf_thread_create (&promote_thread, NULL, &tier_run, - &promotion_args, "tierpro"); - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "Failed to start promotion thread."); - defrag->defrag_status = GF_DEFRAG_STATUS_FAILED; - goto waitforspawned; - } - - hot_compaction_args.this = this; - hot_compaction_args.brick_list = &bricklist_hot; - hot_compaction_args.defrag = defrag; - hot_compaction_args.is_promotion = _gf_false; - hot_compaction_args.is_compaction = _gf_true; - hot_compaction_args.is_hot_tier = _gf_true; - - ret = gf_thread_create (&hot_compact_thread, NULL, &tier_run, - &hot_compaction_args, "tierhcom"); - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "Failed to start compaction thread."); - defrag->defrag_status = GF_DEFRAG_STATUS_FAILED; - goto waitforspawnedpromote; - } - - cold_compaction_args.this = this; - cold_compaction_args.brick_list = &bricklist_cold; - cold_compaction_args.defrag = defrag; - cold_compaction_args.is_promotion = _gf_false; - cold_compaction_args.is_compaction = _gf_true; - cold_compaction_args.is_hot_tier = _gf_false; - - ret = gf_thread_create (&cold_compact_thread, NULL, &tier_run, - &cold_compaction_args, "tierccom"); - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "Failed to start compaction thread."); - defrag->defrag_status = GF_DEFRAG_STATUS_FAILED; - goto waitforspawnedhotcompact; - } - pthread_join (cold_compact_thread, NULL); - -waitforspawnedhotcompact: - pthread_join (hot_compact_thread, NULL); - -waitforspawnedpromote: - pthread_join (promote_thread, NULL); - -waitforspawned: - pthread_join (demote_thread, NULL); - -cleanup: - clear_bricklist (&bricklist_cold); - clear_bricklist (&bricklist_hot); - return ret; -} - -int32_t -tier_migration_needed (xlator_t *this) -{ - gf_defrag_info_t *defrag = NULL; - dht_conf_t *conf = NULL; - int ret = 0; - - conf = this->private; - - GF_VALIDATE_OR_GOTO (this->name, conf, out); - GF_VALIDATE_OR_GOTO (this->name, conf->defrag, out); - - defrag = conf->defrag; - - if ((defrag->cmd == GF_DEFRAG_CMD_START_TIER) || - (defrag->cmd == GF_DEFRAG_CMD_START_DETACH_TIER)) - ret = 1; -out: - return ret; -} - -int32_t -tier_migration_get_dst (xlator_t *this, dht_local_t *local) -{ - dht_conf_t *conf = NULL; - int32_t ret = -1; - gf_defrag_info_t *defrag = NULL; - - GF_VALIDATE_OR_GOTO ("tier", this, out); - GF_VALIDATE_OR_GOTO (this->name, this->private, out); - - conf = this->private; - - defrag = conf->defrag; - - if (defrag && defrag->cmd == GF_DEFRAG_CMD_START_DETACH_TIER) { - local->rebalance.target_node = conf->subvolumes[0]; - - } else if (conf->subvolumes[0] == local->cached_subvol) - local->rebalance.target_node = - conf->subvolumes[1]; - else - local->rebalance.target_node = - conf->subvolumes[0]; - - if (local->rebalance.target_node) - ret = 0; - -out: - return ret; -} - -xlator_t * -tier_search (xlator_t *this, dht_layout_t *layout, const char *name) -{ - xlator_t *subvol = NULL; - dht_conf_t *conf = NULL; - - GF_VALIDATE_OR_GOTO ("tier", this, out); - GF_VALIDATE_OR_GOTO (this->name, this->private, out); - - conf = this->private; - - subvol = TIER_HASHED_SUBVOL; - - out: - return subvol; -} - - -static int -tier_load_externals (xlator_t *this) -{ - int ret = -1; - char *libpathfull = (LIBDIR "/libgfdb.so.0"); - get_gfdb_methods_t get_gfdb_methods; - - GF_VALIDATE_OR_GOTO ("this", this, out); - - libhandle = dlopen (libpathfull, RTLD_NOW); - if (!libhandle) { - gf_msg(this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "Error loading libgfdb.so %s\n", dlerror()); - ret = -1; - goto out; - } - - get_gfdb_methods = dlsym (libhandle, "get_gfdb_methods"); - if (!get_gfdb_methods) { - gf_msg(this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "Error loading get_gfdb_methods()"); - ret = -1; - goto out; - } - - get_gfdb_methods (&gfdb_methods); - - ret = 0; - -out: - if (ret && libhandle) - dlclose (libhandle); - - return ret; -} - -static tier_mode_t -tier_validate_mode (char *mode) -{ - int ret = -1; - - if (strcmp (mode, "test") == 0) { - ret = TIER_MODE_TEST; - } else { - ret = TIER_MODE_WM; - } - - return ret; -} - -static gf_boolean_t -tier_validate_compact_mode (char *mode) -{ - gf_boolean_t ret = _gf_false; - - gf_msg ("tier", GF_LOG_INFO, 0, DHT_MSG_LOG_TIER_STATUS, - "tier_validate_compact_mode: mode = %s", mode); - - if (!strcmp (mode, "on")) { - ret = _gf_true; - } else { - ret = _gf_false; - } - - gf_msg ("tier", GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_STATUS, - "tier_validate_compact_mode: ret = %i", ret); - - return ret; -} - -int -tier_init_methods (xlator_t *this) -{ - int ret = -1; - dht_conf_t *conf = NULL; - dht_methods_t *methods = NULL; - - GF_VALIDATE_OR_GOTO ("tier", this, err); - - conf = this->private; - - methods = &(conf->methods); - - methods->migration_get_dst_subvol = tier_migration_get_dst; - methods->migration_other = tier_start; - methods->migration_needed = tier_migration_needed; - methods->layout_search = tier_search; - - ret = 0; -err: - return ret; -} - - -static void -tier_save_vol_name (xlator_t *this) -{ - dht_conf_t *conf = NULL; - gf_defrag_info_t *defrag = NULL; - char *suffix = NULL; - int name_len = 0; - - - conf = this->private; - defrag = conf->defrag; - - suffix = strstr (this->name, "-tier-dht"); - - if (suffix) - name_len = suffix - this->name; - else - name_len = strlen (this->name); - - if (name_len > GD_VOLUME_NAME_MAX) - name_len = GD_VOLUME_NAME_MAX; - - strncpy (defrag->tier_conf.volname, this->name, name_len); - defrag->tier_conf.volname[name_len] = 0; -} - -int -tier_init (xlator_t *this) -{ - int ret = -1; - int freq = 0; - int maxsize = 0; - dht_conf_t *conf = NULL; - gf_defrag_info_t *defrag = NULL; - char *voldir = NULL; - char *mode = NULL; - char *paused = NULL; - tier_mode_t tier_mode = DEFAULT_TIER_MODE; - gf_boolean_t compact_mode = _gf_false; - - ret = dht_init (this); - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "tier_init failed"); - goto out; - } - - conf = this->private; - - ret = tier_init_methods (this); - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "tier_init_methods failed"); - goto out; - } - - if (conf->subvolume_cnt != 2) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "Invalid number of subvolumes %d", conf->subvolume_cnt); - goto out; - } - - /* if instatiated from client side initialization is complete. */ - if (!conf->defrag) { - ret = 0; - goto out; - } - - /* if instatiated from server side, load db libraries */ - ret = tier_load_externals (this); - if (ret) { - gf_msg(this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "Could not load externals. Aborting"); - goto out; - } - - defrag = conf->defrag; - - defrag->tier_conf.last_demote_qfile_index = 0; - defrag->tier_conf.last_promote_qfile_index = 0; - - defrag->tier_conf.is_tier = 1; - defrag->this = this; - - ret = dict_get_int32 (this->options, - "tier-max-promote-file-size", &maxsize); - if (ret) { - maxsize = 0; - } - - defrag->tier_conf.tier_max_promote_size = maxsize; - - ret = dict_get_int32 (this->options, - "tier-promote-frequency", &freq); - if (ret) { - freq = DEFAULT_PROMOTE_FREQ_SEC; - } - - defrag->tier_conf.tier_promote_frequency = freq; - - ret = dict_get_int32 (this->options, - "tier-demote-frequency", &freq); - if (ret) { - freq = DEFAULT_DEMOTE_FREQ_SEC; - } - - defrag->tier_conf.tier_demote_frequency = freq; - - ret = dict_get_int32 (this->options, - "tier-hot-compact-frequency", &freq); - if (ret) { - freq = DEFAULT_HOT_COMPACT_FREQ_SEC; - } - - defrag->tier_conf.tier_compact_hot_frequency = freq; - - ret = dict_get_int32 (this->options, - "tier-cold-compact-frequency", &freq); - if (ret) { - freq = DEFAULT_COLD_COMPACT_FREQ_SEC; - } - - defrag->tier_conf.tier_compact_cold_frequency = freq; - - ret = dict_get_int32 (this->options, - "watermark-hi", &freq); - if (ret) { - freq = DEFAULT_WM_HI; - } - - defrag->tier_conf.watermark_hi = freq; - - ret = dict_get_int32 (this->options, - "watermark-low", &freq); - if (ret) { - freq = DEFAULT_WM_LOW; - } - - defrag->tier_conf.watermark_low = freq; - - ret = dict_get_int32 (this->options, - "write-freq-threshold", &freq); - if (ret) { - freq = DEFAULT_WRITE_FREQ_SEC; - } - - defrag->write_freq_threshold = freq; - - ret = dict_get_int32 (this->options, - "read-freq-threshold", &freq); - if (ret) { - freq = DEFAULT_READ_FREQ_SEC; - } - - defrag->read_freq_threshold = freq; - - ret = dict_get_int32 (this->options, - "tier-max-mb", &freq); - if (ret) { - freq = DEFAULT_TIER_MAX_MIGRATE_MB; - } - - defrag->tier_conf.max_migrate_bytes = (uint64_t) freq * 1024 * 1024; - - ret = dict_get_int32 (this->options, - "tier-max-files", &freq); - if (ret) { - freq = DEFAULT_TIER_MAX_MIGRATE_FILES; - } - - defrag->tier_conf.max_migrate_files = freq; - - - ret = dict_get_int32 (this->options, - "tier-query-limit", - &(defrag->tier_conf.query_limit)); - if (ret) { - defrag->tier_conf.query_limit = - DEFAULT_TIER_QUERY_LIMIT; - } - - ret = dict_get_str (this->options, - "tier-compact", &mode); - - if (ret) { - defrag->tier_conf.compact_active = DEFAULT_COMP_MODE; - } else { - compact_mode = tier_validate_compact_mode (mode); - /* If compaction is now active, we need to inform the bricks on - the hot and cold tier of this. See dht-common.h for more. */ - defrag->tier_conf.compact_active = compact_mode; - if (compact_mode) { - defrag->tier_conf.compact_mode_switched_hot = _gf_true; - defrag->tier_conf.compact_mode_switched_cold = _gf_true; - } - } - - ret = dict_get_str (this->options, - "tier-mode", &mode); - if (ret) { - defrag->tier_conf.mode = DEFAULT_TIER_MODE; - } else { - tier_mode = tier_validate_mode (mode); - defrag->tier_conf.mode = tier_mode; - } - - pthread_mutex_init (&defrag->tier_conf.pause_mutex, 0); - - gf_defrag_set_pause_state (&defrag->tier_conf, TIER_RUNNING); - - ret = dict_get_str (this->options, - "tier-pause", &paused); - - if (paused && strcmp (paused, "on") == 0) - gf_defrag_set_pause_state (&defrag->tier_conf, - TIER_REQUEST_PAUSE); - - ret = gf_asprintf(&voldir, "%s/%s", - DEFAULT_VAR_RUN_DIRECTORY, - this->name); - if (ret < 0) - goto out; - - ret = mkdir_p(voldir, 0777, _gf_true); - if (ret == -1 && errno != EEXIST) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "tier_init failed"); - - GF_FREE(voldir); - goto out; - } - - GF_FREE(voldir); - - ret = gf_asprintf (&promotion_qfile, "%s/%s/promote", - DEFAULT_VAR_RUN_DIRECTORY, - this->name); - if (ret < 0) - goto out; - - ret = gf_asprintf (&demotion_qfile, "%s/%s/demote", - DEFAULT_VAR_RUN_DIRECTORY, - this->name); - if (ret < 0) { - GF_FREE (promotion_qfile); - goto out; - } - - gf_msg (this->name, GF_LOG_INFO, 0, - DHT_MSG_LOG_TIER_STATUS, - "Promote/demote frequency %d/%d " - "Write/Read freq thresholds %d/%d", - defrag->tier_conf.tier_promote_frequency, - defrag->tier_conf.tier_demote_frequency, - defrag->write_freq_threshold, - defrag->read_freq_threshold); - - tier_save_vol_name (this); - - ret = 0; - -out: - - return ret; -} - -int -tier_cli_pause_done (int op_ret, call_frame_t *sync_frame, void *data) -{ - gf_msg ("tier", GF_LOG_INFO, 0, - DHT_MSG_TIER_PAUSED, - "Migrate file paused with op_ret %d", op_ret); - - return op_ret; -} - -int -tier_cli_pause (void *data) -{ - gf_defrag_info_t *defrag = NULL; - xlator_t *this = NULL; - dht_conf_t *conf = NULL; - int ret = -1; - - this = data; - - conf = this->private; - GF_VALIDATE_OR_GOTO (this->name, conf, exit); - - defrag = conf->defrag; - GF_VALIDATE_OR_GOTO (this->name, defrag, exit); - - gf_defrag_pause_tier (this, defrag); - - ret = 0; -exit: - return ret; -} - -int -tier_reconfigure (xlator_t *this, dict_t *options) -{ - dht_conf_t *conf = NULL; - gf_defrag_info_t *defrag = NULL; - char *mode = NULL; - int migrate_mb = 0; - gf_boolean_t req_pause = _gf_false; - int ret = 0; - call_frame_t *frame = NULL; - gf_boolean_t last_compact_setting = _gf_false; - - conf = this->private; - - if (conf->defrag) { - defrag = conf->defrag; - GF_OPTION_RECONF ("tier-max-promote-file-size", - defrag->tier_conf.tier_max_promote_size, - options, int32, out); - - GF_OPTION_RECONF ("tier-promote-frequency", - defrag->tier_conf.tier_promote_frequency, - options, int32, out); - - GF_OPTION_RECONF ("tier-demote-frequency", - defrag->tier_conf.tier_demote_frequency, - options, int32, out); - - GF_OPTION_RECONF ("write-freq-threshold", - defrag->write_freq_threshold, options, - int32, out); - - GF_OPTION_RECONF ("read-freq-threshold", - defrag->read_freq_threshold, options, - int32, out); - - GF_OPTION_RECONF ("watermark-hi", - defrag->tier_conf.watermark_hi, options, - int32, out); - - GF_OPTION_RECONF ("watermark-low", - defrag->tier_conf.watermark_low, options, - int32, out); - - last_compact_setting = defrag->tier_conf.compact_active; - - GF_OPTION_RECONF ("tier-compact", - defrag->tier_conf.compact_active, options, - bool, out); - - if (last_compact_setting != defrag->tier_conf.compact_active) { - defrag->tier_conf.compact_mode_switched_hot = _gf_true; - defrag->tier_conf.compact_mode_switched_cold = _gf_true; - gf_msg (this->name, GF_LOG_INFO, 0, - DHT_MSG_LOG_TIER_STATUS, - "compact mode switched"); - } - - GF_OPTION_RECONF ("tier-hot-compact-frequency", - defrag->tier_conf.tier_compact_hot_frequency, - options, int32, out); - - GF_OPTION_RECONF ("tier-cold-compact-frequency", - defrag->tier_conf.tier_compact_cold_frequency, - options, int32, out); - - GF_OPTION_RECONF ("tier-mode", - mode, options, - str, out); - defrag->tier_conf.mode = tier_validate_mode (mode); - - GF_OPTION_RECONF ("tier-max-mb", - migrate_mb, options, - int32, out); - defrag->tier_conf.max_migrate_bytes = (uint64_t) migrate_mb * - 1024 * 1024; - - GF_OPTION_RECONF ("tier-max-files", - defrag->tier_conf.max_migrate_files, options, - int32, out); - - GF_OPTION_RECONF ("tier-query-limit", - defrag->tier_conf.query_limit, - options, int32, out); - - GF_OPTION_RECONF ("tier-pause", - req_pause, options, - bool, out); - - if (req_pause == _gf_true) { - - frame = create_frame (this, this->ctx->pool); - if (!frame) - goto out; - - frame->root->pid = GF_CLIENT_PID_DEFRAG; - - ret = synctask_new (this->ctx->env, tier_cli_pause, - tier_cli_pause_done, frame, this); - - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "pause tier failed on reconfigure"); - } - } else { - ret = gf_defrag_resume_tier (this, defrag); - if (ret) { - gf_msg (this->name, GF_LOG_ERROR, 0, - DHT_MSG_LOG_TIER_ERROR, - "resume tier failed on reconfigure"); - } - } - - } - -out: - return dht_reconfigure (this, options); -} - -void -tier_fini (xlator_t *this) -{ - if (libhandle) - dlclose (libhandle); - - GF_FREE (demotion_qfile); - GF_FREE (promotion_qfile); - - dht_fini(this); -} - -class_methods_t class_methods = { - .init = tier_init, - .fini = tier_fini, - .reconfigure = tier_reconfigure, - .notify = dht_notify -}; - -struct xlator_fops fops = { - - .lookup = dht_lookup, - .create = tier_create, - .mknod = dht_mknod, - - .open = dht_open, - .statfs = tier_statfs, - .opendir = dht_opendir, - .readdir = tier_readdir, - .readdirp = tier_readdirp, - .fsyncdir = dht_fsyncdir, - .symlink = dht_symlink, - .unlink = tier_unlink, - .link = tier_link, - .mkdir = dht_mkdir, - .rmdir = dht_rmdir, - .rename = dht_rename, - .entrylk = dht_entrylk, - .fentrylk = dht_fentrylk, - - /* Inode read operations */ - .stat = dht_stat, - .fstat = dht_fstat, - .access = dht_access, - .readlink = dht_readlink, - .getxattr = dht_getxattr, - .fgetxattr = dht_fgetxattr, - .readv = dht_readv, - .flush = dht_flush, - .fsync = dht_fsync, - .inodelk = dht_inodelk, - .finodelk = dht_finodelk, - .lk = dht_lk, - - /* Inode write operations */ - .fremovexattr = dht_fremovexattr, - .removexattr = dht_removexattr, - .setxattr = dht_setxattr, - .fsetxattr = dht_fsetxattr, - .truncate = dht_truncate, - .ftruncate = dht_ftruncate, - .writev = dht_writev, - .xattrop = dht_xattrop, - .fxattrop = dht_fxattrop, - .setattr = dht_setattr, - .fsetattr = dht_fsetattr, - .fallocate = dht_fallocate, - .discard = dht_discard, - .zerofill = dht_zerofill, -}; - -struct xlator_cbks cbks = { - .release = dht_release, - .forget = dht_forget -}; |