diff options
Diffstat (limited to 'src/sys_fs_btrfs.c')
| -rw-r--r-- | src/sys_fs_btrfs.c | 714 |
1 files changed, 714 insertions, 0 deletions
diff --git a/src/sys_fs_btrfs.c b/src/sys_fs_btrfs.c new file mode 100644 index 00000000..a8dfb5c9 --- /dev/null +++ b/src/sys_fs_btrfs.c @@ -0,0 +1,714 @@ +#include "common.h" + +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 disks + snprintfz(filename, FILENAME_MAX, "%s/%s/queue/hw_sector_size", path, de->d_name); + struct stat sb; + 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); + read_file(filename, label, FILENAME_MAX); + + 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)) { + 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 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 + , "MB" + , "proc" + , "sys/fs/btrfs" + , 2300 + , 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_used = rrddim_add(node->st_allocation_disks, "data_used", "data used", 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_metadata_used = rrddim_add(node->st_allocation_disks, "meta_used", "meta 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_system_used = rrddim_add(node->st_allocation_disks, "sys_used", "sys 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); + } + 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)) { + 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 + , "MB" + , "proc" + , "sys/fs/btrfs" + , 2301 + , 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)) { + 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 + , "MB" + , "proc" + , "sys/fs/btrfs" + , 2302 + , 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)) { + 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 + , "MB" + , "proc" + , "sys/fs/btrfs" + , 2303 + , 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; +} + |