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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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