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文件: /usr/local/src/netdata/collectors/proc.plugin/sys_fs_btrfs.c
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// SPDX-License-Identifier: GPL-3.0-or-later #include "plugin_proc.h" #define PLUGIN_PROC_MODULE_BTRFS_NAME "/sys/fs/btrfs" typedef struct btrfs_disk { char *name; uint32_t hash; int exists; char *size_filename; char *hw_sector_size_filename; unsigned long long size; unsigned long long hw_sector_size; struct btrfs_disk *next; } BTRFS_DISK; typedef struct btrfs_node { int exists; int logged_error; char *id; uint32_t hash; char *label; // unsigned long long int sectorsize; // unsigned long long int nodesize; // unsigned long long int quota_override; #define declare_btrfs_allocation_section_field(SECTION, FIELD) \ char *allocation_ ## SECTION ## _ ## FIELD ## _filename; \ unsigned long long int allocation_ ## SECTION ## _ ## FIELD; #define declare_btrfs_allocation_field(FIELD) \ char *allocation_ ## FIELD ## _filename; \ unsigned long long int allocation_ ## FIELD; RRDSET *st_allocation_disks; RRDDIM *rd_allocation_disks_unallocated; RRDDIM *rd_allocation_disks_data_used; RRDDIM *rd_allocation_disks_data_free; RRDDIM *rd_allocation_disks_metadata_used; RRDDIM *rd_allocation_disks_metadata_free; RRDDIM *rd_allocation_disks_system_used; RRDDIM *rd_allocation_disks_system_free; unsigned long long all_disks_total; RRDSET *st_allocation_data; RRDDIM *rd_allocation_data_free; RRDDIM *rd_allocation_data_used; declare_btrfs_allocation_section_field(data, total_bytes) declare_btrfs_allocation_section_field(data, bytes_used) declare_btrfs_allocation_section_field(data, disk_total) declare_btrfs_allocation_section_field(data, disk_used) RRDSET *st_allocation_metadata; RRDDIM *rd_allocation_metadata_free; RRDDIM *rd_allocation_metadata_used; RRDDIM *rd_allocation_metadata_reserved; declare_btrfs_allocation_section_field(metadata, total_bytes) declare_btrfs_allocation_section_field(metadata, bytes_used) declare_btrfs_allocation_section_field(metadata, disk_total) declare_btrfs_allocation_section_field(metadata, disk_used) //declare_btrfs_allocation_field(global_rsv_reserved) declare_btrfs_allocation_field(global_rsv_size) RRDSET *st_allocation_system; RRDDIM *rd_allocation_system_free; RRDDIM *rd_allocation_system_used; declare_btrfs_allocation_section_field(system, total_bytes) declare_btrfs_allocation_section_field(system, bytes_used) declare_btrfs_allocation_section_field(system, disk_total) declare_btrfs_allocation_section_field(system, disk_used) BTRFS_DISK *disks; struct btrfs_node *next; } BTRFS_NODE; static BTRFS_NODE *nodes = NULL; static inline void btrfs_free_disk(BTRFS_DISK *d) { freez(d->name); freez(d->size_filename); freez(d->hw_sector_size_filename); freez(d); } static inline void btrfs_free_node(BTRFS_NODE *node) { // info("BTRFS: destroying '%s'", node->id); if(node->st_allocation_disks) rrdset_is_obsolete(node->st_allocation_disks); if(node->st_allocation_data) rrdset_is_obsolete(node->st_allocation_data); if(node->st_allocation_metadata) rrdset_is_obsolete(node->st_allocation_metadata); if(node->st_allocation_system) rrdset_is_obsolete(node->st_allocation_system); freez(node->allocation_data_bytes_used_filename); freez(node->allocation_data_total_bytes_filename); freez(node->allocation_metadata_bytes_used_filename); freez(node->allocation_metadata_total_bytes_filename); freez(node->allocation_system_bytes_used_filename); freez(node->allocation_system_total_bytes_filename); while(node->disks) { BTRFS_DISK *d = node->disks; node->disks = node->disks->next; btrfs_free_disk(d); } freez(node->label); freez(node->id); freez(node); } static inline int find_btrfs_disks(BTRFS_NODE *node, const char *path) { char filename[FILENAME_MAX + 1]; node->all_disks_total = 0; BTRFS_DISK *d; for(d = node->disks ; d ; d = d->next) d->exists = 0; DIR *dir = opendir(path); if (!dir) { if(!node->logged_error) { error("BTRFS: Cannot open directory '%s'.", path); node->logged_error = 1; } return 1; } node->logged_error = 0; struct dirent *de = NULL; while ((de = readdir(dir))) { if (de->d_type != DT_LNK || !strcmp(de->d_name, ".") || !strcmp(de->d_name, "..") ) { // info("BTRFS: ignoring '%s'", de->d_name); continue; } uint32_t hash = simple_hash(de->d_name); // -------------------------------------------------------------------- // search for it for(d = node->disks ; d ; d = d->next) { if(hash == d->hash && !strcmp(de->d_name, d->name)) break; } // -------------------------------------------------------------------- // did we find it? if(!d) { d = callocz(sizeof(BTRFS_DISK), 1); d->name = strdupz(de->d_name); d->hash = simple_hash(d->name); snprintfz(filename, FILENAME_MAX, "%s/%s/size", path, de->d_name); d->size_filename = strdupz(filename); // for bcache snprintfz(filename, FILENAME_MAX, "%s/%s/bcache/../queue/hw_sector_size", path, de->d_name); struct stat sb; if(stat(filename, &sb) == -1) { // for disks snprintfz(filename, FILENAME_MAX, "%s/%s/queue/hw_sector_size", path, de->d_name); if(stat(filename, &sb) == -1) // for partitions snprintfz(filename, FILENAME_MAX, "%s/%s/../queue/hw_sector_size", path, de->d_name); } d->hw_sector_size_filename = strdupz(filename); // link it d->next = node->disks; node->disks = d; } d->exists = 1; // -------------------------------------------------------------------- // update the values if(read_single_number_file(d->size_filename, &d->size) != 0) { error("BTRFS: failed to read '%s'", d->size_filename); d->exists = 0; continue; } if(read_single_number_file(d->hw_sector_size_filename, &d->hw_sector_size) != 0) { error("BTRFS: failed to read '%s'", d->hw_sector_size_filename); d->exists = 0; continue; } node->all_disks_total += d->size * d->hw_sector_size; } closedir(dir); // ------------------------------------------------------------------------ // cleanup BTRFS_DISK *last = NULL; d = node->disks; while(d) { if(unlikely(!d->exists)) { if(unlikely(node->disks == d)) { node->disks = d->next; btrfs_free_disk(d); d = node->disks; last = NULL; } else { last->next = d->next; btrfs_free_disk(d); d = last->next; } continue; } last = d; d = d->next; } return 0; } static inline int find_all_btrfs_pools(const char *path) { static int logged_error = 0; char filename[FILENAME_MAX + 1]; BTRFS_NODE *node; for(node = nodes ; node ; node = node->next) node->exists = 0; DIR *dir = opendir(path); if (!dir) { if(!logged_error) { error("BTRFS: Cannot open directory '%s'.", path); logged_error = 1; } return 1; } logged_error = 0; struct dirent *de = NULL; while ((de = readdir(dir))) { if(de->d_type != DT_DIR || !strcmp(de->d_name, ".") || !strcmp(de->d_name, "..") || !strcmp(de->d_name, "features") ) { // info("BTRFS: ignoring '%s'", de->d_name); continue; } uint32_t hash = simple_hash(de->d_name); // search for it for(node = nodes ; node ; node = node->next) { if(hash == node->hash && !strcmp(de->d_name, node->id)) break; } // did we find it? if(node) { // info("BTRFS: already exists '%s'", de->d_name); node->exists = 1; // update the disk sizes snprintfz(filename, FILENAME_MAX, "%s/%s/devices", path, de->d_name); find_btrfs_disks(node, filename); continue; } // info("BTRFS: adding '%s'", de->d_name); // not found, create it node = callocz(sizeof(BTRFS_NODE), 1); node->id = strdupz(de->d_name); node->hash = simple_hash(node->id); node->exists = 1; { char label[FILENAME_MAX + 1] = ""; snprintfz(filename, FILENAME_MAX, "%s/%s/label", path, de->d_name); if(read_file(filename, label, FILENAME_MAX) != 0) { error("BTRFS: failed to read '%s'", filename); btrfs_free_node(node); continue; } char *s = label; if (s[0]) s = trim(label); if(s && s[0]) node->label = strdupz(s); else node->label = strdupz(node->id); } //snprintfz(filename, FILENAME_MAX, "%s/%s/sectorsize", path, de->d_name); //if(read_single_number_file(filename, &node->sectorsize) != 0) { // error("BTRFS: failed to read '%s'", filename); // btrfs_free_node(node); // continue; //} //snprintfz(filename, FILENAME_MAX, "%s/%s/nodesize", path, de->d_name); //if(read_single_number_file(filename, &node->nodesize) != 0) { // error("BTRFS: failed to read '%s'", filename); // btrfs_free_node(node); // continue; //} //snprintfz(filename, FILENAME_MAX, "%s/%s/quota_override", path, de->d_name); //if(read_single_number_file(filename, &node->quota_override) != 0) { // error("BTRFS: failed to read '%s'", filename); // btrfs_free_node(node); // continue; //} // -------------------------------------------------------------------- // macros to simplify our life #define init_btrfs_allocation_field(FIELD) {\ snprintfz(filename, FILENAME_MAX, "%s/%s/allocation/" #FIELD, path, de->d_name); \ if(read_single_number_file(filename, &node->allocation_ ## FIELD) != 0) {\ error("BTRFS: failed to read '%s'", filename);\ btrfs_free_node(node);\ continue;\ }\ if(!node->allocation_ ## FIELD ## _filename)\ node->allocation_ ## FIELD ## _filename = strdupz(filename);\ } #define init_btrfs_allocation_section_field(SECTION, FIELD) {\ snprintfz(filename, FILENAME_MAX, "%s/%s/allocation/" #SECTION "/" #FIELD, path, de->d_name); \ if(read_single_number_file(filename, &node->allocation_ ## SECTION ## _ ## FIELD) != 0) {\ error("BTRFS: failed to read '%s'", filename);\ btrfs_free_node(node);\ continue;\ }\ if(!node->allocation_ ## SECTION ## _ ## FIELD ## _filename)\ node->allocation_ ## SECTION ## _ ## FIELD ## _filename = strdupz(filename);\ } // -------------------------------------------------------------------- // allocation/data init_btrfs_allocation_section_field(data, total_bytes); init_btrfs_allocation_section_field(data, bytes_used); init_btrfs_allocation_section_field(data, disk_total); init_btrfs_allocation_section_field(data, disk_used); // -------------------------------------------------------------------- // allocation/metadata init_btrfs_allocation_section_field(metadata, total_bytes); init_btrfs_allocation_section_field(metadata, bytes_used); init_btrfs_allocation_section_field(metadata, disk_total); init_btrfs_allocation_section_field(metadata, disk_used); init_btrfs_allocation_field(global_rsv_size); // init_btrfs_allocation_field(global_rsv_reserved); // -------------------------------------------------------------------- // allocation/system init_btrfs_allocation_section_field(system, total_bytes); init_btrfs_allocation_section_field(system, bytes_used); init_btrfs_allocation_section_field(system, disk_total); init_btrfs_allocation_section_field(system, disk_used); // -------------------------------------------------------------------- // find all disks related to this node // and collect their sizes snprintfz(filename, FILENAME_MAX, "%s/%s/devices", path, de->d_name); find_btrfs_disks(node, filename); // -------------------------------------------------------------------- // link it // info("BTRFS: linking '%s'", node->id); node->next = nodes; nodes = node; } closedir(dir); // ------------------------------------------------------------------------ // cleanup BTRFS_NODE *last = NULL; node = nodes; while(node) { if(unlikely(!node->exists)) { if(unlikely(nodes == node)) { nodes = node->next; btrfs_free_node(node); node = nodes; last = NULL; } else { last->next = node->next; btrfs_free_node(node); node = last->next; } continue; } last = node; node = node->next; } return 0; } int do_sys_fs_btrfs(int update_every, usec_t dt) { static int initialized = 0 , do_allocation_disks = CONFIG_BOOLEAN_AUTO , do_allocation_system = CONFIG_BOOLEAN_AUTO , do_allocation_data = CONFIG_BOOLEAN_AUTO , do_allocation_metadata = CONFIG_BOOLEAN_AUTO; static usec_t refresh_delta = 0, refresh_every = 60 * USEC_PER_SEC; static char *btrfs_path = NULL; (void)dt; if(unlikely(!initialized)) { initialized = 1; char filename[FILENAME_MAX + 1]; snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/fs/btrfs"); btrfs_path = config_get("plugin:proc:/sys/fs/btrfs", "path to monitor", filename); refresh_every = config_get_number("plugin:proc:/sys/fs/btrfs", "check for btrfs changes every", refresh_every / USEC_PER_SEC) * USEC_PER_SEC; refresh_delta = refresh_every; do_allocation_disks = config_get_boolean_ondemand("plugin:proc:/sys/fs/btrfs", "physical disks allocation", do_allocation_disks); do_allocation_data = config_get_boolean_ondemand("plugin:proc:/sys/fs/btrfs", "data allocation", do_allocation_data); do_allocation_metadata = config_get_boolean_ondemand("plugin:proc:/sys/fs/btrfs", "metadata allocation", do_allocation_metadata); do_allocation_system = config_get_boolean_ondemand("plugin:proc:/sys/fs/btrfs", "system allocation", do_allocation_system); } refresh_delta += dt; if(refresh_delta >= refresh_every) { refresh_delta = 0; find_all_btrfs_pools(btrfs_path); } BTRFS_NODE *node; for(node = nodes; node ; node = node->next) { // -------------------------------------------------------------------- // allocation/system #define collect_btrfs_allocation_field(FIELD) \ read_single_number_file(node->allocation_ ## FIELD ## _filename, &node->allocation_ ## FIELD) #define collect_btrfs_allocation_section_field(SECTION, FIELD) \ read_single_number_file(node->allocation_ ## SECTION ## _ ## FIELD ## _filename, &node->allocation_ ## SECTION ## _ ## FIELD) if(do_allocation_disks != CONFIG_BOOLEAN_NO) { if( collect_btrfs_allocation_section_field(data, disk_total) != 0 || collect_btrfs_allocation_section_field(data, disk_used) != 0 || collect_btrfs_allocation_section_field(metadata, disk_total) != 0 || collect_btrfs_allocation_section_field(metadata, disk_used) != 0 || collect_btrfs_allocation_section_field(system, disk_total) != 0 || collect_btrfs_allocation_section_field(system, disk_used) != 0) { error("BTRFS: failed to collect physical disks allocation for '%s'", node->id); // make it refresh btrfs at the next iteration refresh_delta = refresh_every; continue; } } if(do_allocation_data != CONFIG_BOOLEAN_NO) { if (collect_btrfs_allocation_section_field(data, total_bytes) != 0 || collect_btrfs_allocation_section_field(data, bytes_used) != 0) { error("BTRFS: failed to collect allocation/data for '%s'", node->id); // make it refresh btrfs at the next iteration refresh_delta = refresh_every; continue; } } if(do_allocation_metadata != CONFIG_BOOLEAN_NO) { if (collect_btrfs_allocation_section_field(metadata, total_bytes) != 0 || collect_btrfs_allocation_section_field(metadata, bytes_used) != 0 || collect_btrfs_allocation_field(global_rsv_size) != 0 ) { error("BTRFS: failed to collect allocation/metadata for '%s'", node->id); // make it refresh btrfs at the next iteration refresh_delta = refresh_every; continue; } } if(do_allocation_system != CONFIG_BOOLEAN_NO) { if (collect_btrfs_allocation_section_field(system, total_bytes) != 0 || collect_btrfs_allocation_section_field(system, bytes_used) != 0) { error("BTRFS: failed to collect allocation/system for '%s'", node->id); // make it refresh btrfs at the next iteration refresh_delta = refresh_every; continue; } } // -------------------------------------------------------------------- // allocation/disks if(do_allocation_disks == CONFIG_BOOLEAN_YES || (do_allocation_disks == CONFIG_BOOLEAN_AUTO && ((node->all_disks_total && node->allocation_data_disk_total) || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) { do_allocation_disks = CONFIG_BOOLEAN_YES; if(unlikely(!node->st_allocation_disks)) { char id[RRD_ID_LENGTH_MAX + 1], name[RRD_ID_LENGTH_MAX + 1], title[200 + 1]; snprintf(id, RRD_ID_LENGTH_MAX, "disk_%s", node->id); snprintf(name, RRD_ID_LENGTH_MAX, "disk_%s", node->label); snprintf(title, 200, "BTRFS Physical Disk Allocation for %s", node->label); netdata_fix_chart_id(id); netdata_fix_chart_name(name); node->st_allocation_disks = rrdset_create_localhost( "btrfs" , id , name , node->label , "btrfs.disk" , title , "MiB" , PLUGIN_PROC_NAME , PLUGIN_PROC_MODULE_BTRFS_NAME , NETDATA_CHART_PRIO_BTRFS_DISK , update_every , RRDSET_TYPE_STACKED ); node->rd_allocation_disks_unallocated = rrddim_add(node->st_allocation_disks, "unallocated", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE); node->rd_allocation_disks_data_free = rrddim_add(node->st_allocation_disks, "data_free", "data free", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE); node->rd_allocation_disks_data_used = rrddim_add(node->st_allocation_disks, "data_used", "data used", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE); node->rd_allocation_disks_metadata_free = rrddim_add(node->st_allocation_disks, "meta_free", "meta free", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE); node->rd_allocation_disks_metadata_used = rrddim_add(node->st_allocation_disks, "meta_used", "meta used", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE); node->rd_allocation_disks_system_free = rrddim_add(node->st_allocation_disks, "sys_free", "sys free", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE); node->rd_allocation_disks_system_used = rrddim_add(node->st_allocation_disks, "sys_used", "sys used", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE); } else rrdset_next(node->st_allocation_disks); // unsigned long long disk_used = node->allocation_data_disk_used + node->allocation_metadata_disk_used + node->allocation_system_disk_used; unsigned long long disk_total = node->allocation_data_disk_total + node->allocation_metadata_disk_total + node->allocation_system_disk_total; unsigned long long disk_unallocated = node->all_disks_total - disk_total; rrddim_set_by_pointer(node->st_allocation_disks, node->rd_allocation_disks_unallocated, disk_unallocated); rrddim_set_by_pointer(node->st_allocation_disks, node->rd_allocation_disks_data_used, node->allocation_data_disk_used); rrddim_set_by_pointer(node->st_allocation_disks, node->rd_allocation_disks_data_free, node->allocation_data_disk_total - node->allocation_data_disk_used); rrddim_set_by_pointer(node->st_allocation_disks, node->rd_allocation_disks_metadata_used, node->allocation_metadata_disk_used); rrddim_set_by_pointer(node->st_allocation_disks, node->rd_allocation_disks_metadata_free, node->allocation_metadata_disk_total - node->allocation_metadata_disk_used); rrddim_set_by_pointer(node->st_allocation_disks, node->rd_allocation_disks_system_used, node->allocation_system_disk_used); rrddim_set_by_pointer(node->st_allocation_disks, node->rd_allocation_disks_system_free, node->allocation_system_disk_total - node->allocation_system_disk_used); rrdset_done(node->st_allocation_disks); } // -------------------------------------------------------------------- // allocation/data if(do_allocation_data == CONFIG_BOOLEAN_YES || (do_allocation_data == CONFIG_BOOLEAN_AUTO && (node->allocation_data_total_bytes || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) { do_allocation_data = CONFIG_BOOLEAN_YES; if(unlikely(!node->st_allocation_data)) { char id[RRD_ID_LENGTH_MAX + 1], name[RRD_ID_LENGTH_MAX + 1], title[200 + 1]; snprintf(id, RRD_ID_LENGTH_MAX, "data_%s", node->id); snprintf(name, RRD_ID_LENGTH_MAX, "data_%s", node->label); snprintf(title, 200, "BTRFS Data Allocation for %s", node->label); netdata_fix_chart_id(id); netdata_fix_chart_name(name); node->st_allocation_data = rrdset_create_localhost( "btrfs" , id , name , node->label , "btrfs.data" , title , "MiB" , PLUGIN_PROC_NAME , PLUGIN_PROC_MODULE_BTRFS_NAME , NETDATA_CHART_PRIO_BTRFS_DATA , update_every , RRDSET_TYPE_STACKED ); node->rd_allocation_data_free = rrddim_add(node->st_allocation_data, "free", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE); node->rd_allocation_data_used = rrddim_add(node->st_allocation_data, "used", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE); } else rrdset_next(node->st_allocation_data); rrddim_set_by_pointer(node->st_allocation_data, node->rd_allocation_data_free, node->allocation_data_total_bytes - node->allocation_data_bytes_used); rrddim_set_by_pointer(node->st_allocation_data, node->rd_allocation_data_used, node->allocation_data_bytes_used); rrdset_done(node->st_allocation_data); } // -------------------------------------------------------------------- // allocation/metadata if(do_allocation_metadata == CONFIG_BOOLEAN_YES || (do_allocation_metadata == CONFIG_BOOLEAN_AUTO && (node->allocation_metadata_total_bytes || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) { do_allocation_metadata = CONFIG_BOOLEAN_YES; if(unlikely(!node->st_allocation_metadata)) { char id[RRD_ID_LENGTH_MAX + 1], name[RRD_ID_LENGTH_MAX + 1], title[200 + 1]; snprintf(id, RRD_ID_LENGTH_MAX, "metadata_%s", node->id); snprintf(name, RRD_ID_LENGTH_MAX, "metadata_%s", node->label); snprintf(title, 200, "BTRFS Metadata Allocation for %s", node->label); netdata_fix_chart_id(id); netdata_fix_chart_name(name); node->st_allocation_metadata = rrdset_create_localhost( "btrfs" , id , name , node->label , "btrfs.metadata" , title , "MiB" , PLUGIN_PROC_NAME , PLUGIN_PROC_MODULE_BTRFS_NAME , NETDATA_CHART_PRIO_BTRFS_METADATA , update_every , RRDSET_TYPE_STACKED ); node->rd_allocation_metadata_free = rrddim_add(node->st_allocation_metadata, "free", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE); node->rd_allocation_metadata_used = rrddim_add(node->st_allocation_metadata, "used", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE); node->rd_allocation_metadata_reserved = rrddim_add(node->st_allocation_metadata, "reserved", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE); } else rrdset_next(node->st_allocation_metadata); rrddim_set_by_pointer(node->st_allocation_metadata, node->rd_allocation_metadata_free, node->allocation_metadata_total_bytes - node->allocation_metadata_bytes_used - node->allocation_global_rsv_size); rrddim_set_by_pointer(node->st_allocation_metadata, node->rd_allocation_metadata_used, node->allocation_metadata_bytes_used); rrddim_set_by_pointer(node->st_allocation_metadata, node->rd_allocation_metadata_reserved, node->allocation_global_rsv_size); rrdset_done(node->st_allocation_metadata); } // -------------------------------------------------------------------- // allocation/system if(do_allocation_system == CONFIG_BOOLEAN_YES || (do_allocation_system == CONFIG_BOOLEAN_AUTO && (node->allocation_system_total_bytes || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) { do_allocation_system = CONFIG_BOOLEAN_YES; if(unlikely(!node->st_allocation_system)) { char id[RRD_ID_LENGTH_MAX + 1], name[RRD_ID_LENGTH_MAX + 1], title[200 + 1]; snprintf(id, RRD_ID_LENGTH_MAX, "system_%s", node->id); snprintf(name, RRD_ID_LENGTH_MAX, "system_%s", node->label); snprintf(title, 200, "BTRFS System Allocation for %s", node->label); netdata_fix_chart_id(id); netdata_fix_chart_name(name); node->st_allocation_system = rrdset_create_localhost( "btrfs" , id , name , node->label , "btrfs.system" , title , "MiB" , PLUGIN_PROC_NAME , PLUGIN_PROC_MODULE_BTRFS_NAME , NETDATA_CHART_PRIO_BTRFS_SYSTEM , update_every , RRDSET_TYPE_STACKED ); node->rd_allocation_system_free = rrddim_add(node->st_allocation_system, "free", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE); node->rd_allocation_system_used = rrddim_add(node->st_allocation_system, "used", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE); } else rrdset_next(node->st_allocation_system); rrddim_set_by_pointer(node->st_allocation_system, node->rd_allocation_system_free, node->allocation_system_total_bytes - node->allocation_system_bytes_used); rrddim_set_by_pointer(node->st_allocation_system, node->rd_allocation_system_used, node->allocation_system_bytes_used); rrdset_done(node->st_allocation_system); } } return 0; }
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