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-rw-r--r--collectors/proc.plugin/proc_diskstats.c1700
1 files changed, 1700 insertions, 0 deletions
diff --git a/collectors/proc.plugin/proc_diskstats.c b/collectors/proc.plugin/proc_diskstats.c
new file mode 100644
index 0000000..eee0cbe
--- /dev/null
+++ b/collectors/proc.plugin/proc_diskstats.c
@@ -0,0 +1,1700 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define RRD_TYPE_DISK "disk"
+#define PLUGIN_PROC_MODULE_DISKSTATS_NAME "/proc/diskstats"
+#define CONFIG_SECTION_PLUGIN_PROC_DISKSTATS "plugin:" PLUGIN_PROC_CONFIG_NAME ":" PLUGIN_PROC_MODULE_DISKSTATS_NAME
+
+#define DISK_TYPE_UNKNOWN 0
+#define DISK_TYPE_PHYSICAL 1
+#define DISK_TYPE_PARTITION 2
+#define DISK_TYPE_VIRTUAL 3
+
+#define DEFAULT_PREFERRED_IDS "*"
+#define DEFAULT_EXCLUDED_DISKS "loop* ram*"
+
+static struct disk {
+ char *disk; // the name of the disk (sda, sdb, etc, after being looked up)
+ char *device; // the device of the disk (before being looked up)
+ unsigned long major;
+ unsigned long minor;
+ int sector_size;
+ int type;
+
+ char *mount_point;
+
+ // disk options caching
+ int do_io;
+ int do_ops;
+ int do_mops;
+ int do_iotime;
+ int do_qops;
+ int do_util;
+ int do_backlog;
+ int do_bcache;
+
+ int updated;
+
+ int device_is_bcache;
+
+ char *bcache_filename_dirty_data;
+ char *bcache_filename_writeback_rate;
+ char *bcache_filename_cache_congested;
+ char *bcache_filename_cache_available_percent;
+ char *bcache_filename_stats_five_minute_cache_hit_ratio;
+ char *bcache_filename_stats_hour_cache_hit_ratio;
+ char *bcache_filename_stats_day_cache_hit_ratio;
+ char *bcache_filename_stats_total_cache_hit_ratio;
+ char *bcache_filename_stats_total_cache_hits;
+ char *bcache_filename_stats_total_cache_misses;
+ char *bcache_filename_stats_total_cache_miss_collisions;
+ char *bcache_filename_stats_total_cache_bypass_hits;
+ char *bcache_filename_stats_total_cache_bypass_misses;
+ char *bcache_filename_stats_total_cache_readaheads;
+ char *bcache_filename_cache_read_races;
+ char *bcache_filename_cache_io_errors;
+ char *bcache_filename_priority_stats;
+
+ usec_t bcache_priority_stats_update_every_usec;
+ usec_t bcache_priority_stats_elapsed_usec;
+
+ RRDSET *st_io;
+ RRDDIM *rd_io_reads;
+ RRDDIM *rd_io_writes;
+
+ RRDSET *st_ops;
+ RRDDIM *rd_ops_reads;
+ RRDDIM *rd_ops_writes;
+
+ RRDSET *st_qops;
+ RRDDIM *rd_qops_operations;
+
+ RRDSET *st_backlog;
+ RRDDIM *rd_backlog_backlog;
+
+ RRDSET *st_util;
+ RRDDIM *rd_util_utilization;
+
+ RRDSET *st_mops;
+ RRDDIM *rd_mops_reads;
+ RRDDIM *rd_mops_writes;
+
+ RRDSET *st_iotime;
+ RRDDIM *rd_iotime_reads;
+ RRDDIM *rd_iotime_writes;
+
+ RRDSET *st_await;
+ RRDDIM *rd_await_reads;
+ RRDDIM *rd_await_writes;
+
+ RRDSET *st_avgsz;
+ RRDDIM *rd_avgsz_reads;
+ RRDDIM *rd_avgsz_writes;
+
+ RRDSET *st_svctm;
+ RRDDIM *rd_svctm_svctm;
+
+ RRDSET *st_bcache_size;
+ RRDDIM *rd_bcache_dirty_size;
+
+ RRDSET *st_bcache_usage;
+ RRDDIM *rd_bcache_available_percent;
+
+ RRDSET *st_bcache_hit_ratio;
+ RRDDIM *rd_bcache_hit_ratio_5min;
+ RRDDIM *rd_bcache_hit_ratio_1hour;
+ RRDDIM *rd_bcache_hit_ratio_1day;
+ RRDDIM *rd_bcache_hit_ratio_total;
+
+ RRDSET *st_bcache;
+ RRDDIM *rd_bcache_hits;
+ RRDDIM *rd_bcache_misses;
+ RRDDIM *rd_bcache_miss_collisions;
+
+ RRDSET *st_bcache_bypass;
+ RRDDIM *rd_bcache_bypass_hits;
+ RRDDIM *rd_bcache_bypass_misses;
+
+ RRDSET *st_bcache_rates;
+ RRDDIM *rd_bcache_rate_congested;
+ RRDDIM *rd_bcache_readaheads;
+ RRDDIM *rd_bcache_rate_writeback;
+
+ RRDSET *st_bcache_cache_allocations;
+ RRDDIM *rd_bcache_cache_allocations_unused;
+ RRDDIM *rd_bcache_cache_allocations_clean;
+ RRDDIM *rd_bcache_cache_allocations_dirty;
+ RRDDIM *rd_bcache_cache_allocations_metadata;
+ RRDDIM *rd_bcache_cache_allocations_unknown;
+
+ RRDSET *st_bcache_cache_read_races;
+ RRDDIM *rd_bcache_cache_read_races;
+ RRDDIM *rd_bcache_cache_io_errors;
+
+ struct disk *next;
+} *disk_root = NULL;
+
+#define rrdset_obsolete_and_pointer_null(st) do { if(st) { rrdset_is_obsolete(st); (st) = NULL; } } while(st)
+
+// static char *path_to_get_hw_sector_size = NULL;
+// static char *path_to_get_hw_sector_size_partitions = NULL;
+static char *path_to_sys_dev_block_major_minor_string = NULL;
+static char *path_to_sys_block_device = NULL;
+static char *path_to_sys_block_device_bcache = NULL;
+static char *path_to_sys_devices_virtual_block_device = NULL;
+static char *path_to_device_mapper = NULL;
+static char *path_to_device_label = NULL;
+static char *path_to_device_id = NULL;
+static char *path_to_veritas_volume_groups = NULL;
+static int name_disks_by_id = CONFIG_BOOLEAN_NO;
+static int global_bcache_priority_stats_update_every = 0; // disabled by default
+
+static int global_enable_new_disks_detected_at_runtime = CONFIG_BOOLEAN_YES,
+ global_enable_performance_for_physical_disks = CONFIG_BOOLEAN_AUTO,
+ global_enable_performance_for_virtual_disks = CONFIG_BOOLEAN_AUTO,
+ global_enable_performance_for_partitions = CONFIG_BOOLEAN_NO,
+ global_do_io = CONFIG_BOOLEAN_AUTO,
+ global_do_ops = CONFIG_BOOLEAN_AUTO,
+ global_do_mops = CONFIG_BOOLEAN_AUTO,
+ global_do_iotime = CONFIG_BOOLEAN_AUTO,
+ global_do_qops = CONFIG_BOOLEAN_AUTO,
+ global_do_util = CONFIG_BOOLEAN_AUTO,
+ global_do_backlog = CONFIG_BOOLEAN_AUTO,
+ global_do_bcache = CONFIG_BOOLEAN_AUTO,
+ globals_initialized = 0,
+ global_cleanup_removed_disks = 1;
+
+static SIMPLE_PATTERN *preferred_ids = NULL;
+static SIMPLE_PATTERN *excluded_disks = NULL;
+
+static unsigned long long int bcache_read_number_with_units(const char *filename) {
+ char buffer[50 + 1];
+ if(read_file(filename, buffer, 50) == 0) {
+ static int unknown_units_error = 10;
+
+ char *end = NULL;
+ long double value = str2ld(buffer, &end);
+ if(end && *end) {
+ if(*end == 'k')
+ return (unsigned long long int)(value * 1024.0);
+ else if(*end == 'M')
+ return (unsigned long long int)(value * 1024.0 * 1024.0);
+ else if(*end == 'G')
+ return (unsigned long long int)(value * 1024.0 * 1024.0 * 1024.0);
+ else if(*end == 'T')
+ return (unsigned long long int)(value * 1024.0 * 1024.0 * 1024.0 * 1024.0);
+ else if(unknown_units_error > 0) {
+ error("bcache file '%s' provides value '%s' with unknown units '%s'", filename, buffer, end);
+ unknown_units_error--;
+ }
+ }
+
+ return (unsigned long long int)value;
+ }
+
+ return 0;
+}
+
+void bcache_read_priority_stats(struct disk *d, const char *family, int update_every, usec_t dt) {
+ static procfile *ff = NULL;
+ static char *separators = " \t:%[]";
+
+ static ARL_BASE *arl_base = NULL;
+
+ static unsigned long long unused;
+ static unsigned long long clean;
+ static unsigned long long dirty;
+ static unsigned long long metadata;
+ static unsigned long long unknown;
+
+ // check if it is time to update this metric
+ d->bcache_priority_stats_elapsed_usec += dt;
+ if(likely(d->bcache_priority_stats_elapsed_usec < d->bcache_priority_stats_update_every_usec)) return;
+ d->bcache_priority_stats_elapsed_usec = 0;
+
+ // initialize ARL
+ if(unlikely(!arl_base)) {
+ arl_base = arl_create("bcache/priority_stats", NULL, 60);
+ arl_expect(arl_base, "Unused", &unused);
+ arl_expect(arl_base, "Clean", &clean);
+ arl_expect(arl_base, "Dirty", &dirty);
+ arl_expect(arl_base, "Metadata", &metadata);
+ }
+
+ ff = procfile_reopen(ff, d->bcache_filename_priority_stats, separators, PROCFILE_FLAG_DEFAULT);
+ if(likely(ff)) ff = procfile_readall(ff);
+ if(unlikely(!ff)) {
+ separators = " \t:%[]";
+ return;
+ }
+
+ // do not reset the separators on every iteration
+ separators = NULL;
+
+ arl_begin(arl_base);
+ unused = clean = dirty = metadata = unknown = 0;
+
+ size_t lines = procfile_lines(ff), l;
+
+ for(l = 0; l < lines ;l++) {
+ size_t words = procfile_linewords(ff, l);
+ if(unlikely(words < 2)) {
+ if(unlikely(words)) error("Cannot read '%s' line %zu. Expected 2 params, read %zu.", d->bcache_filename_priority_stats, l, words);
+ continue;
+ }
+
+ if(unlikely(arl_check(arl_base,
+ procfile_lineword(ff, l, 0),
+ procfile_lineword(ff, l, 1)))) break;
+ }
+
+ unknown = 100 - unused - clean - dirty - metadata;
+
+ // create / update the cache allocations chart
+ {
+ if(unlikely(!d->st_bcache_cache_allocations)) {
+ d->st_bcache_cache_allocations = rrdset_create_localhost(
+ "disk_bcache_cache_alloc"
+ , d->device
+ , d->disk
+ , family
+ , "disk.bcache_cache_alloc"
+ , "BCache Cache Allocations"
+ , "percentage"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+ , NETDATA_CHART_PRIO_BCACHE_CACHE_ALLOC
+ , update_every
+ , RRDSET_TYPE_STACKED
+ );
+
+ d->rd_bcache_cache_allocations_unused = rrddim_add(d->st_bcache_cache_allocations, "unused", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ d->rd_bcache_cache_allocations_dirty = rrddim_add(d->st_bcache_cache_allocations, "dirty", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ d->rd_bcache_cache_allocations_clean = rrddim_add(d->st_bcache_cache_allocations, "clean", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ d->rd_bcache_cache_allocations_metadata = rrddim_add(d->st_bcache_cache_allocations, "metadata", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ d->rd_bcache_cache_allocations_unknown = rrddim_add(d->st_bcache_cache_allocations, "undefined", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+
+ d->bcache_priority_stats_update_every_usec = update_every * USEC_PER_SEC;
+ }
+ else rrdset_next(d->st_bcache_cache_allocations);
+
+ rrddim_set_by_pointer(d->st_bcache_cache_allocations, d->rd_bcache_cache_allocations_unused, unused);
+ rrddim_set_by_pointer(d->st_bcache_cache_allocations, d->rd_bcache_cache_allocations_dirty, dirty);
+ rrddim_set_by_pointer(d->st_bcache_cache_allocations, d->rd_bcache_cache_allocations_clean, clean);
+ rrddim_set_by_pointer(d->st_bcache_cache_allocations, d->rd_bcache_cache_allocations_metadata, metadata);
+ rrddim_set_by_pointer(d->st_bcache_cache_allocations, d->rd_bcache_cache_allocations_unknown, unknown);
+ rrdset_done(d->st_bcache_cache_allocations);
+ }
+}
+
+static inline int is_major_enabled(int major) {
+ static int8_t *major_configs = NULL;
+ static size_t major_size = 0;
+
+ if(major < 0) return 1;
+
+ size_t wanted_size = (size_t)major + 1;
+
+ if(major_size < wanted_size) {
+ major_configs = reallocz(major_configs, wanted_size * sizeof(int8_t));
+
+ size_t i;
+ for(i = major_size; i < wanted_size ; i++)
+ major_configs[i] = -1;
+
+ major_size = wanted_size;
+ }
+
+ if(major_configs[major] == -1) {
+ char buffer[CONFIG_MAX_NAME + 1];
+ snprintfz(buffer, CONFIG_MAX_NAME, "performance metrics for disks with major %d", major);
+ major_configs[major] = (char)config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, buffer, 1);
+ }
+
+ return (int)major_configs[major];
+}
+
+static inline int get_disk_name_from_path(const char *path, char *result, size_t result_size, unsigned long major, unsigned long minor, char *disk, char *prefix, int depth) {
+ //info("DEVICE-MAPPER ('%s', %lu:%lu): examining directory '%s' (allowed depth %d).", disk, major, minor, path, depth);
+
+ int found = 0, preferred = 0;
+
+ char *first_result = mallocz(result_size);
+
+ DIR *dir = opendir(path);
+ if (!dir) {
+ error("DEVICE-MAPPER ('%s', %lu:%lu): Cannot open directory '%s'.", disk, major, minor, path);
+ goto failed;
+ }
+
+ struct dirent *de = NULL;
+ while ((de = readdir(dir))) {
+ if(de->d_type == DT_DIR) {
+ if((de->d_name[0] == '.' && de->d_name[1] == '\0') || (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0'))
+ continue;
+
+ if(depth <= 0) {
+ error("DEVICE-MAPPER ('%s', %lu:%lu): Depth limit reached for path '%s/%s'. Ignoring path.", disk, major, minor, path, de->d_name);
+ break;
+ }
+ else {
+ char *path_nested = NULL;
+ char *prefix_nested = NULL;
+
+ {
+ char buffer[FILENAME_MAX + 1];
+ snprintfz(buffer, FILENAME_MAX, "%s/%s", path, de->d_name);
+ path_nested = strdupz(buffer);
+
+ snprintfz(buffer, FILENAME_MAX, "%s%s%s", (prefix)?prefix:"", (prefix)?"_":"", de->d_name);
+ prefix_nested = strdupz(buffer);
+ }
+
+ found = get_disk_name_from_path(path_nested, result, result_size, major, minor, disk, prefix_nested, depth - 1);
+ freez(path_nested);
+ freez(prefix_nested);
+
+ if(found) break;
+ }
+ }
+ else if(de->d_type == DT_LNK || de->d_type == DT_BLK) {
+ char filename[FILENAME_MAX + 1];
+
+ if(de->d_type == DT_LNK) {
+ snprintfz(filename, FILENAME_MAX, "%s/%s", path, de->d_name);
+ ssize_t len = readlink(filename, result, result_size - 1);
+ if(len <= 0) {
+ error("DEVICE-MAPPER ('%s', %lu:%lu): Cannot read link '%s'.", disk, major, minor, filename);
+ continue;
+ }
+
+ result[len] = '\0';
+ if(result[0] != '/')
+ snprintfz(filename, FILENAME_MAX, "%s/%s", path, result);
+ else
+ strncpyz(filename, result, FILENAME_MAX);
+ }
+ else {
+ snprintfz(filename, FILENAME_MAX, "%s/%s", path, de->d_name);
+ }
+
+ struct stat sb;
+ if(stat(filename, &sb) == -1) {
+ error("DEVICE-MAPPER ('%s', %lu:%lu): Cannot stat() file '%s'.", disk, major, minor, filename);
+ continue;
+ }
+
+ if((sb.st_mode & S_IFMT) != S_IFBLK) {
+ //info("DEVICE-MAPPER ('%s', %lu:%lu): file '%s' is not a block device.", disk, major, minor, filename);
+ continue;
+ }
+
+ if(major(sb.st_rdev) != major || minor(sb.st_rdev) != minor) {
+ //info("DEVICE-MAPPER ('%s', %lu:%lu): filename '%s' does not match %lu:%lu.", disk, major, minor, filename, (unsigned long)major(sb.st_rdev), (unsigned long)minor(sb.st_rdev));
+ continue;
+ }
+
+ //info("DEVICE-MAPPER ('%s', %lu:%lu): filename '%s' matches.", disk, major, minor, filename);
+
+ snprintfz(result, result_size - 1, "%s%s%s", (prefix)?prefix:"", (prefix)?"_":"", de->d_name);
+
+ if(!found) {
+ strncpyz(first_result, result, result_size);
+ found = 1;
+ }
+
+ if(simple_pattern_matches(preferred_ids, result)) {
+ preferred = 1;
+ break;
+ }
+ }
+ }
+ closedir(dir);
+
+
+failed:
+
+ if(!found)
+ result[0] = '\0';
+ else if(!preferred)
+ strncpyz(result, first_result, result_size);
+
+ freez(first_result);
+
+ return found;
+}
+
+static inline char *get_disk_name(unsigned long major, unsigned long minor, char *disk) {
+ char result[FILENAME_MAX + 1] = "";
+
+ if(!path_to_device_mapper || !*path_to_device_mapper || !get_disk_name_from_path(path_to_device_mapper, result, FILENAME_MAX + 1, major, minor, disk, NULL, 0))
+ if(!path_to_device_label || !*path_to_device_label || !get_disk_name_from_path(path_to_device_label, result, FILENAME_MAX + 1, major, minor, disk, NULL, 0))
+ if(!path_to_veritas_volume_groups || !*path_to_veritas_volume_groups || !get_disk_name_from_path(path_to_veritas_volume_groups, result, FILENAME_MAX + 1, major, minor, disk, "vx", 2))
+ if(name_disks_by_id != CONFIG_BOOLEAN_YES || !path_to_device_id || !*path_to_device_id || !get_disk_name_from_path(path_to_device_id, result, FILENAME_MAX + 1, major, minor, disk, NULL, 0))
+ strncpy(result, disk, FILENAME_MAX);
+
+ if(!result[0])
+ strncpy(result, disk, FILENAME_MAX);
+
+ netdata_fix_chart_name(result);
+ return strdup(result);
+}
+
+static void get_disk_config(struct disk *d) {
+ int def_enable = global_enable_new_disks_detected_at_runtime;
+
+ if(def_enable != CONFIG_BOOLEAN_NO && (simple_pattern_matches(excluded_disks, d->device) || simple_pattern_matches(excluded_disks, d->disk)))
+ def_enable = CONFIG_BOOLEAN_NO;
+
+ char var_name[4096 + 1];
+ snprintfz(var_name, 4096, CONFIG_SECTION_PLUGIN_PROC_DISKSTATS ":%s", d->disk);
+
+ def_enable = config_get_boolean_ondemand(var_name, "enable", def_enable);
+ if(unlikely(def_enable == CONFIG_BOOLEAN_NO)) {
+ // the user does not want any metrics for this disk
+ d->do_io = CONFIG_BOOLEAN_NO;
+ d->do_ops = CONFIG_BOOLEAN_NO;
+ d->do_mops = CONFIG_BOOLEAN_NO;
+ d->do_iotime = CONFIG_BOOLEAN_NO;
+ d->do_qops = CONFIG_BOOLEAN_NO;
+ d->do_util = CONFIG_BOOLEAN_NO;
+ d->do_backlog = CONFIG_BOOLEAN_NO;
+ d->do_bcache = CONFIG_BOOLEAN_NO;
+ }
+ else {
+ // this disk is enabled
+ // check its direct settings
+
+ int def_performance = CONFIG_BOOLEAN_AUTO;
+
+ // since this is 'on demand' we can figure the performance settings
+ // based on the type of disk
+
+ if(!d->device_is_bcache) {
+ switch(d->type) {
+ default:
+ case DISK_TYPE_UNKNOWN:
+ break;
+
+ case DISK_TYPE_PHYSICAL:
+ def_performance = global_enable_performance_for_physical_disks;
+ break;
+
+ case DISK_TYPE_PARTITION:
+ def_performance = global_enable_performance_for_partitions;
+ break;
+
+ case DISK_TYPE_VIRTUAL:
+ def_performance = global_enable_performance_for_virtual_disks;
+ break;
+ }
+ }
+
+ // check if we have to disable performance for this disk
+ if(def_performance)
+ def_performance = is_major_enabled((int)d->major);
+
+ // ------------------------------------------------------------
+ // now we have def_performance and def_space
+ // to work further
+
+ // def_performance
+ // check the user configuration (this will also show our 'on demand' decision)
+ def_performance = config_get_boolean_ondemand(var_name, "enable performance metrics", def_performance);
+
+ int ddo_io = CONFIG_BOOLEAN_NO,
+ ddo_ops = CONFIG_BOOLEAN_NO,
+ ddo_mops = CONFIG_BOOLEAN_NO,
+ ddo_iotime = CONFIG_BOOLEAN_NO,
+ ddo_qops = CONFIG_BOOLEAN_NO,
+ ddo_util = CONFIG_BOOLEAN_NO,
+ ddo_backlog = CONFIG_BOOLEAN_NO,
+ ddo_bcache = CONFIG_BOOLEAN_NO;
+
+ // we enable individual performance charts only when def_performance is not disabled
+ if(unlikely(def_performance != CONFIG_BOOLEAN_NO)) {
+ ddo_io = global_do_io,
+ ddo_ops = global_do_ops,
+ ddo_mops = global_do_mops,
+ ddo_iotime = global_do_iotime,
+ ddo_qops = global_do_qops,
+ ddo_util = global_do_util,
+ ddo_backlog = global_do_backlog,
+ ddo_bcache = global_do_bcache;
+ }
+
+ d->do_io = config_get_boolean_ondemand(var_name, "bandwidth", ddo_io);
+ d->do_ops = config_get_boolean_ondemand(var_name, "operations", ddo_ops);
+ d->do_mops = config_get_boolean_ondemand(var_name, "merged operations", ddo_mops);
+ d->do_iotime = config_get_boolean_ondemand(var_name, "i/o time", ddo_iotime);
+ d->do_qops = config_get_boolean_ondemand(var_name, "queued operations", ddo_qops);
+ d->do_util = config_get_boolean_ondemand(var_name, "utilization percentage", ddo_util);
+ d->do_backlog = config_get_boolean_ondemand(var_name, "backlog", ddo_backlog);
+
+ if(d->device_is_bcache)
+ d->do_bcache = config_get_boolean_ondemand(var_name, "bcache", ddo_bcache);
+ else
+ d->do_bcache = 0;
+ }
+}
+
+static struct disk *get_disk(unsigned long major, unsigned long minor, char *disk) {
+ static struct mountinfo *disk_mountinfo_root = NULL;
+
+ struct disk *d;
+
+ // search for it in our RAM list.
+ // this is sequential, but since we just walk through
+ // and the number of disks / partitions in a system
+ // should not be that many, it should be acceptable
+ for(d = disk_root; d ; d = d->next)
+ if(unlikely(d->major == major && d->minor == minor))
+ return d;
+
+ // not found
+ // create a new disk structure
+ d = (struct disk *)callocz(1, sizeof(struct disk));
+
+ d->disk = get_disk_name(major, minor, disk);
+ d->device = strdupz(disk);
+ d->major = major;
+ d->minor = minor;
+ d->type = DISK_TYPE_UNKNOWN; // Default type. Changed later if not correct.
+ d->sector_size = 512; // the default, will be changed below
+ d->next = NULL;
+
+ // append it to the list
+ if(unlikely(!disk_root))
+ disk_root = d;
+ else {
+ struct disk *last;
+ for(last = disk_root; last->next ;last = last->next);
+ last->next = d;
+ }
+
+ char buffer[FILENAME_MAX + 1];
+
+ // find if it is a physical disk
+ // by checking if /sys/block/DISK is readable.
+ snprintfz(buffer, FILENAME_MAX, path_to_sys_block_device, disk);
+ if(likely(access(buffer, R_OK) == 0)) {
+ // assign it here, but it will be overwritten if it is not a physical disk
+ d->type = DISK_TYPE_PHYSICAL;
+ }
+
+ // find if it is a partition
+ // by checking if /sys/dev/block/MAJOR:MINOR/partition is readable.
+ snprintfz(buffer, FILENAME_MAX, path_to_sys_dev_block_major_minor_string, major, minor, "partition");
+ if(likely(access(buffer, R_OK) == 0)) {
+ d->type = DISK_TYPE_PARTITION;
+ }
+ else {
+ // find if it is a virtual disk
+ // by checking if /sys/devices/virtual/block/DISK is readable.
+ snprintfz(buffer, FILENAME_MAX, path_to_sys_devices_virtual_block_device, disk);
+ if(likely(access(buffer, R_OK) == 0)) {
+ d->type = DISK_TYPE_VIRTUAL;
+ }
+ else {
+ // find if it is a virtual device
+ // by checking if /sys/dev/block/MAJOR:MINOR/slaves has entries
+ snprintfz(buffer, FILENAME_MAX, path_to_sys_dev_block_major_minor_string, major, minor, "slaves/");
+ DIR *dirp = opendir(buffer);
+ if (likely(dirp != NULL)) {
+ struct dirent *dp;
+ while ((dp = readdir(dirp))) {
+ // . and .. are also files in empty folders.
+ if (unlikely(strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..") == 0)) {
+ continue;
+ }
+
+ d->type = DISK_TYPE_VIRTUAL;
+
+ // Stop the loop after we found one file.
+ break;
+ }
+ if (unlikely(closedir(dirp) == -1))
+ error("Unable to close dir %s", buffer);
+ }
+ }
+ }
+
+ // ------------------------------------------------------------------------
+ // check if we can find its mount point
+
+ // mountinfo_find() can be called with NULL disk_mountinfo_root
+ struct mountinfo *mi = mountinfo_find(disk_mountinfo_root, d->major, d->minor);
+ if(unlikely(!mi)) {
+ // mountinfo_free_all can be called with NULL
+ mountinfo_free_all(disk_mountinfo_root);
+ disk_mountinfo_root = mountinfo_read(0);
+ mi = mountinfo_find(disk_mountinfo_root, d->major, d->minor);
+ }
+
+ if(unlikely(mi))
+ d->mount_point = strdupz(mi->mount_point);
+ else
+ d->mount_point = NULL;
+
+ // ------------------------------------------------------------------------
+ // find the disk sector size
+
+ /*
+ * sector size is always 512 bytes inside the kernel #3481
+ *
+ {
+ char tf[FILENAME_MAX + 1], *t;
+ strncpyz(tf, d->device, FILENAME_MAX);
+
+ // replace all / with !
+ for(t = tf; *t ;t++)
+ if(unlikely(*t == '/')) *t = '!';
+
+ if(likely(d->type == DISK_TYPE_PARTITION))
+ snprintfz(buffer, FILENAME_MAX, path_to_get_hw_sector_size_partitions, d->major, d->minor, tf);
+ else
+ snprintfz(buffer, FILENAME_MAX, path_to_get_hw_sector_size, tf);
+
+ FILE *fpss = fopen(buffer, "r");
+ if(likely(fpss)) {
+ char buffer2[1024 + 1];
+ char *tmp = fgets(buffer2, 1024, fpss);
+
+ if(likely(tmp)) {
+ d->sector_size = str2i(tmp);
+ if(unlikely(d->sector_size <= 0)) {
+ error("Invalid sector size %d for device %s in %s. Assuming 512.", d->sector_size, d->device, buffer);
+ d->sector_size = 512;
+ }
+ }
+ else error("Cannot read data for sector size for device %s from %s. Assuming 512.", d->device, buffer);
+
+ fclose(fpss);
+ }
+ else error("Cannot read sector size for device %s from %s. Assuming 512.", d->device, buffer);
+ }
+ */
+
+ // ------------------------------------------------------------------------
+ // check if the device is a bcache
+
+ struct stat bcache;
+ snprintfz(buffer, FILENAME_MAX, path_to_sys_block_device_bcache, disk);
+ if(unlikely(stat(buffer, &bcache) == 0 && (bcache.st_mode & S_IFMT) == S_IFDIR)) {
+ // we have the 'bcache' directory
+ d->device_is_bcache = 1;
+
+ char buffer2[FILENAME_MAX + 1];
+
+ snprintfz(buffer2, FILENAME_MAX, "%s/cache/congested", buffer);
+ if(access(buffer2, R_OK) == 0)
+ d->bcache_filename_cache_congested = strdupz(buffer2);
+ else
+ error("bcache file '%s' cannot be read.", buffer2);
+
+ snprintfz(buffer2, FILENAME_MAX, "%s/readahead", buffer);
+ if(access(buffer2, R_OK) == 0)
+ d->bcache_filename_stats_total_cache_readaheads = strdupz(buffer2);
+ else
+ error("bcache file '%s' cannot be read.", buffer2);
+
+ snprintfz(buffer2, FILENAME_MAX, "%s/cache/cache0/priority_stats", buffer); // only one cache is supported by bcache
+ if(access(buffer2, R_OK) == 0)
+ d->bcache_filename_priority_stats = strdupz(buffer2);
+ else
+ error("bcache file '%s' cannot be read.", buffer2);
+
+ snprintfz(buffer2, FILENAME_MAX, "%s/cache/internal/cache_read_races", buffer);
+ if(access(buffer2, R_OK) == 0)
+ d->bcache_filename_cache_read_races = strdupz(buffer2);
+ else
+ error("bcache file '%s' cannot be read.", buffer2);
+
+ snprintfz(buffer2, FILENAME_MAX, "%s/cache/cache0/io_errors", buffer);
+ if(access(buffer2, R_OK) == 0)
+ d->bcache_filename_cache_io_errors = strdupz(buffer2);
+ else
+ error("bcache file '%s' cannot be read.", buffer2);
+
+ snprintfz(buffer2, FILENAME_MAX, "%s/dirty_data", buffer);
+ if(access(buffer2, R_OK) == 0)
+ d->bcache_filename_dirty_data = strdupz(buffer2);
+ else
+ error("bcache file '%s' cannot be read.", buffer2);
+
+ snprintfz(buffer2, FILENAME_MAX, "%s/writeback_rate", buffer);
+ if(access(buffer2, R_OK) == 0)
+ d->bcache_filename_writeback_rate = strdupz(buffer2);
+ else
+ error("bcache file '%s' cannot be read.", buffer2);
+
+ snprintfz(buffer2, FILENAME_MAX, "%s/cache/cache_available_percent", buffer);
+ if(access(buffer2, R_OK) == 0)
+ d->bcache_filename_cache_available_percent = strdupz(buffer2);
+ else
+ error("bcache file '%s' cannot be read.", buffer2);
+
+ snprintfz(buffer2, FILENAME_MAX, "%s/stats_total/cache_hits", buffer);
+ if(access(buffer2, R_OK) == 0)
+ d->bcache_filename_stats_total_cache_hits = strdupz(buffer2);
+ else
+ error("bcache file '%s' cannot be read.", buffer2);
+
+ snprintfz(buffer2, FILENAME_MAX, "%s/stats_five_minute/cache_hit_ratio", buffer);
+ if(access(buffer2, R_OK) == 0)
+ d->bcache_filename_stats_five_minute_cache_hit_ratio = strdupz(buffer2);
+ else
+ error("bcache file '%s' cannot be read.", buffer2);
+
+ snprintfz(buffer2, FILENAME_MAX, "%s/stats_hour/cache_hit_ratio", buffer);
+ if(access(buffer2, R_OK) == 0)
+ d->bcache_filename_stats_hour_cache_hit_ratio = strdupz(buffer2);
+ else
+ error("bcache file '%s' cannot be read.", buffer2);
+
+ snprintfz(buffer2, FILENAME_MAX, "%s/stats_day/cache_hit_ratio", buffer);
+ if(access(buffer2, R_OK) == 0)
+ d->bcache_filename_stats_day_cache_hit_ratio = strdupz(buffer2);
+ else
+ error("bcache file '%s' cannot be read.", buffer2);
+
+ snprintfz(buffer2, FILENAME_MAX, "%s/stats_total/cache_hit_ratio", buffer);
+ if(access(buffer2, R_OK) == 0)
+ d->bcache_filename_stats_total_cache_hit_ratio = strdupz(buffer2);
+ else
+ error("bcache file '%s' cannot be read.", buffer2);
+
+ snprintfz(buffer2, FILENAME_MAX, "%s/stats_total/cache_misses", buffer);
+ if(access(buffer2, R_OK) == 0)
+ d->bcache_filename_stats_total_cache_misses = strdupz(buffer2);
+ else
+ error("bcache file '%s' cannot be read.", buffer2);
+
+ snprintfz(buffer2, FILENAME_MAX, "%s/stats_total/cache_bypass_hits", buffer);
+ if(access(buffer2, R_OK) == 0)
+ d->bcache_filename_stats_total_cache_bypass_hits = strdupz(buffer2);
+ else
+ error("bcache file '%s' cannot be read.", buffer2);
+
+ snprintfz(buffer2, FILENAME_MAX, "%s/stats_total/cache_bypass_misses", buffer);
+ if(access(buffer2, R_OK) == 0)
+ d->bcache_filename_stats_total_cache_bypass_misses = strdupz(buffer2);
+ else
+ error("bcache file '%s' cannot be read.", buffer2);
+
+ snprintfz(buffer2, FILENAME_MAX, "%s/stats_total/cache_miss_collisions", buffer);
+ if(access(buffer2, R_OK) == 0)
+ d->bcache_filename_stats_total_cache_miss_collisions = strdupz(buffer2);
+ else
+ error("bcache file '%s' cannot be read.", buffer2);
+ }
+
+ get_disk_config(d);
+ return d;
+}
+
+int do_proc_diskstats(int update_every, usec_t dt) {
+ static procfile *ff = NULL;
+
+ if(unlikely(!globals_initialized)) {
+ globals_initialized = 1;
+
+ global_enable_new_disks_detected_at_runtime = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "enable new disks detected at runtime", global_enable_new_disks_detected_at_runtime);
+ global_enable_performance_for_physical_disks = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "performance metrics for physical disks", global_enable_performance_for_physical_disks);
+ global_enable_performance_for_virtual_disks = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "performance metrics for virtual disks", global_enable_performance_for_virtual_disks);
+ global_enable_performance_for_partitions = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "performance metrics for partitions", global_enable_performance_for_partitions);
+
+ global_do_io = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "bandwidth for all disks", global_do_io);
+ global_do_ops = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "operations for all disks", global_do_ops);
+ global_do_mops = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "merged operations for all disks", global_do_mops);
+ global_do_iotime = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "i/o time for all disks", global_do_iotime);
+ global_do_qops = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "queued operations for all disks", global_do_qops);
+ global_do_util = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "utilization percentage for all disks", global_do_util);
+ global_do_backlog = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "backlog for all disks", global_do_backlog);
+ global_do_bcache = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "bcache for all disks", global_do_bcache);
+ global_bcache_priority_stats_update_every = (int)config_get_number(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "bcache priority stats update every", global_bcache_priority_stats_update_every);
+
+ global_cleanup_removed_disks = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "remove charts of removed disks" , global_cleanup_removed_disks);
+
+ char buffer[FILENAME_MAX + 1];
+
+ snprintfz(buffer, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/block/%s");
+ path_to_sys_block_device = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to get block device", buffer);
+
+ snprintfz(buffer, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/block/%s/bcache");
+ path_to_sys_block_device_bcache = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to get block device bcache", buffer);
+
+ snprintfz(buffer, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/devices/virtual/block/%s");
+ path_to_sys_devices_virtual_block_device = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to get virtual block device", buffer);
+
+ snprintfz(buffer, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/dev/block/%lu:%lu/%s");
+ path_to_sys_dev_block_major_minor_string = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to get block device infos", buffer);
+
+ //snprintfz(buffer, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/block/%s/queue/hw_sector_size");
+ //path_to_get_hw_sector_size = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to get h/w sector size", buffer);
+
+ //snprintfz(buffer, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/dev/block/%lu:%lu/subsystem/%s/../queue/hw_sector_size");
+ //path_to_get_hw_sector_size_partitions = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to get h/w sector size for partitions", buffer);
+
+ snprintfz(buffer, FILENAME_MAX, "%s/dev/mapper", netdata_configured_host_prefix);
+ path_to_device_mapper = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to device mapper", buffer);
+
+ snprintfz(buffer, FILENAME_MAX, "%s/dev/disk/by-label", netdata_configured_host_prefix);
+ path_to_device_label = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to /dev/disk/by-label", buffer);
+
+ snprintfz(buffer, FILENAME_MAX, "%s/dev/disk/by-id", netdata_configured_host_prefix);
+ path_to_device_id = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to /dev/disk/by-id", buffer);
+
+ snprintfz(buffer, FILENAME_MAX, "%s/dev/vx/dsk", netdata_configured_host_prefix);
+ path_to_veritas_volume_groups = config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "path to /dev/vx/dsk", buffer);
+
+ name_disks_by_id = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "name disks by id", name_disks_by_id);
+
+ preferred_ids = simple_pattern_create(
+ config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "preferred disk ids", DEFAULT_PREFERRED_IDS)
+ , NULL
+ , SIMPLE_PATTERN_EXACT
+ );
+
+ excluded_disks = simple_pattern_create(
+ config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "exclude disks", DEFAULT_EXCLUDED_DISKS)
+ , NULL
+ , SIMPLE_PATTERN_EXACT
+ );
+ }
+
+ // --------------------------------------------------------------------------
+
+ if(unlikely(!ff)) {
+ char filename[FILENAME_MAX + 1];
+ snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/diskstats");
+ ff = procfile_open(config_get(CONFIG_SECTION_PLUGIN_PROC_DISKSTATS, "filename to monitor", filename), " \t", PROCFILE_FLAG_DEFAULT);
+ }
+ if(unlikely(!ff)) return 0;
+
+ ff = procfile_readall(ff);
+ if(unlikely(!ff)) return 0; // we return 0, so that we will retry to open it next time
+
+ size_t lines = procfile_lines(ff), l;
+
+ collected_number system_read_kb = 0, system_write_kb = 0;
+
+ for(l = 0; l < lines ;l++) {
+ // --------------------------------------------------------------------------
+ // Read parameters
+
+ char *disk;
+ unsigned long major = 0, minor = 0;
+
+ collected_number reads = 0, mreads = 0, readsectors = 0, readms = 0,
+ writes = 0, mwrites = 0, writesectors = 0, writems = 0,
+ queued_ios = 0, busy_ms = 0, backlog_ms = 0;
+
+ collected_number last_reads = 0, last_readsectors = 0, last_readms = 0,
+ last_writes = 0, last_writesectors = 0, last_writems = 0,
+ last_busy_ms = 0;
+
+ size_t words = procfile_linewords(ff, l);
+ if(unlikely(words < 14)) continue;
+
+ major = str2ul(procfile_lineword(ff, l, 0));
+ minor = str2ul(procfile_lineword(ff, l, 1));
+ disk = procfile_lineword(ff, l, 2);
+
+ // # of reads completed # of writes completed
+ // This is the total number of reads or writes completed successfully.
+ reads = str2ull(procfile_lineword(ff, l, 3)); // rd_ios
+ writes = str2ull(procfile_lineword(ff, l, 7)); // wr_ios
+
+ // # of reads merged # of writes merged
+ // Reads and writes which are adjacent to each other may be merged for
+ // efficiency. Thus two 4K reads may become one 8K read before it is
+ // ultimately handed to the disk, and so it will be counted (and queued)
+ mreads = str2ull(procfile_lineword(ff, l, 4)); // rd_merges_or_rd_sec
+ mwrites = str2ull(procfile_lineword(ff, l, 8)); // wr_merges
+
+ // # of sectors read # of sectors written
+ // This is the total number of sectors read or written successfully.
+ readsectors = str2ull(procfile_lineword(ff, l, 5)); // rd_sec_or_wr_ios
+ writesectors = str2ull(procfile_lineword(ff, l, 9)); // wr_sec
+
+ // # of milliseconds spent reading # of milliseconds spent writing
+ // This is the total number of milliseconds spent by all reads or writes (as
+ // measured from __make_request() to end_that_request_last()).
+ readms = str2ull(procfile_lineword(ff, l, 6)); // rd_ticks_or_wr_sec
+ writems = str2ull(procfile_lineword(ff, l, 10)); // wr_ticks
+
+ // # of I/Os currently in progress
+ // The only field that should go to zero. Incremented as requests are
+ // given to appropriate struct request_queue and decremented as they finish.
+ queued_ios = str2ull(procfile_lineword(ff, l, 11)); // ios_pgr
+
+ // # of milliseconds spent doing I/Os
+ // This field increases so long as field queued_ios is nonzero.
+ busy_ms = str2ull(procfile_lineword(ff, l, 12)); // tot_ticks
+
+ // weighted # of milliseconds spent doing I/Os
+ // This field is incremented at each I/O start, I/O completion, I/O
+ // merge, or read of these stats by the number of I/Os in progress
+ // (field queued_ios) times the number of milliseconds spent doing I/O since the
+ // last update of this field. This can provide an easy measure of both
+ // I/O completion time and the backlog that may be accumulating.
+ backlog_ms = str2ull(procfile_lineword(ff, l, 13)); // rq_ticks
+
+
+ // --------------------------------------------------------------------------
+ // remove slashes from disk names
+ char *s;
+ for(s = disk; *s ;s++)
+ if(*s == '/') *s = '_';
+
+ // --------------------------------------------------------------------------
+ // get a disk structure for the disk
+
+ struct disk *d = get_disk(major, minor, disk);
+ d->updated = 1;
+
+ // --------------------------------------------------------------------------
+ // count the global system disk I/O of physical disks
+
+ if(unlikely(d->type == DISK_TYPE_PHYSICAL)) {
+ system_read_kb += readsectors * d->sector_size / 1024;
+ system_write_kb += writesectors * d->sector_size / 1024;
+ }
+
+ // --------------------------------------------------------------------------
+ // Set its family based on mount point
+
+ char *family = d->mount_point;
+ if(!family) family = d->disk;
+
+
+ // --------------------------------------------------------------------------
+ // Do performance metrics
+
+ if(d->do_io == CONFIG_BOOLEAN_YES || (d->do_io == CONFIG_BOOLEAN_AUTO &&
+ (readsectors || writesectors ||
+ netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+ d->do_io = CONFIG_BOOLEAN_YES;
+
+ if(unlikely(!d->st_io)) {
+ d->st_io = rrdset_create_localhost(
+ RRD_TYPE_DISK
+ , d->device
+ , d->disk
+ , family
+ , "disk.io"
+ , "Disk I/O Bandwidth"
+ , "KiB/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+ , NETDATA_CHART_PRIO_DISK_IO
+ , update_every
+ , RRDSET_TYPE_AREA
+ );
+
+ d->rd_io_reads = rrddim_add(d->st_io, "reads", NULL, d->sector_size, 1024, RRD_ALGORITHM_INCREMENTAL);
+ d->rd_io_writes = rrddim_add(d->st_io, "writes", NULL, d->sector_size * -1, 1024, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(d->st_io);
+
+ last_readsectors = rrddim_set_by_pointer(d->st_io, d->rd_io_reads, readsectors);
+ last_writesectors = rrddim_set_by_pointer(d->st_io, d->rd_io_writes, writesectors);
+ rrdset_done(d->st_io);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(d->do_ops == CONFIG_BOOLEAN_YES || (d->do_ops == CONFIG_BOOLEAN_AUTO &&
+ (reads || writes || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+ d->do_ops = CONFIG_BOOLEAN_YES;
+
+ if(unlikely(!d->st_ops)) {
+ d->st_ops = rrdset_create_localhost(
+ "disk_ops"
+ , d->device
+ , d->disk
+ , family
+ , "disk.ops"
+ , "Disk Completed I/O Operations"
+ , "operations/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+ , NETDATA_CHART_PRIO_DISK_OPS
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rrdset_flag_set(d->st_ops, RRDSET_FLAG_DETAIL);
+
+ d->rd_ops_reads = rrddim_add(d->st_ops, "reads", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ d->rd_ops_writes = rrddim_add(d->st_ops, "writes", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(d->st_ops);
+
+ last_reads = rrddim_set_by_pointer(d->st_ops, d->rd_ops_reads, reads);
+ last_writes = rrddim_set_by_pointer(d->st_ops, d->rd_ops_writes, writes);
+ rrdset_done(d->st_ops);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(d->do_qops == CONFIG_BOOLEAN_YES || (d->do_qops == CONFIG_BOOLEAN_AUTO &&
+ (queued_ios || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+ d->do_qops = CONFIG_BOOLEAN_YES;
+
+ if(unlikely(!d->st_qops)) {
+ d->st_qops = rrdset_create_localhost(
+ "disk_qops"
+ , d->device
+ , d->disk
+ , family
+ , "disk.qops"
+ , "Disk Current I/O Operations"
+ , "operations"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+ , NETDATA_CHART_PRIO_DISK_QOPS
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rrdset_flag_set(d->st_qops, RRDSET_FLAG_DETAIL);
+
+ d->rd_qops_operations = rrddim_add(d->st_qops, "operations", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(d->st_qops);
+
+ rrddim_set_by_pointer(d->st_qops, d->rd_qops_operations, queued_ios);
+ rrdset_done(d->st_qops);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(d->do_backlog == CONFIG_BOOLEAN_YES || (d->do_backlog == CONFIG_BOOLEAN_AUTO &&
+ (backlog_ms || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+ d->do_backlog = CONFIG_BOOLEAN_YES;
+
+ if(unlikely(!d->st_backlog)) {
+ d->st_backlog = rrdset_create_localhost(
+ "disk_backlog"
+ , d->device
+ , d->disk
+ , family
+ , "disk.backlog"
+ , "Disk Backlog"
+ , "milliseconds"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+ , NETDATA_CHART_PRIO_DISK_BACKLOG
+ , update_every
+ , RRDSET_TYPE_AREA
+ );
+
+ rrdset_flag_set(d->st_backlog, RRDSET_FLAG_DETAIL);
+
+ d->rd_backlog_backlog = rrddim_add(d->st_backlog, "backlog", NULL, 1, 10, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(d->st_backlog);
+
+ rrddim_set_by_pointer(d->st_backlog, d->rd_backlog_backlog, backlog_ms);
+ rrdset_done(d->st_backlog);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(d->do_util == CONFIG_BOOLEAN_YES || (d->do_util == CONFIG_BOOLEAN_AUTO &&
+ (busy_ms || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+ d->do_util = CONFIG_BOOLEAN_YES;
+
+ if(unlikely(!d->st_util)) {
+ d->st_util = rrdset_create_localhost(
+ "disk_util"
+ , d->device
+ , d->disk
+ , family
+ , "disk.util"
+ , "Disk Utilization Time"
+ , "% of time working"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+ , NETDATA_CHART_PRIO_DISK_UTIL
+ , update_every
+ , RRDSET_TYPE_AREA
+ );
+
+ rrdset_flag_set(d->st_util, RRDSET_FLAG_DETAIL);
+
+ d->rd_util_utilization = rrddim_add(d->st_util, "utilization", NULL, 1, 10, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(d->st_util);
+
+ last_busy_ms = rrddim_set_by_pointer(d->st_util, d->rd_util_utilization, busy_ms);
+ rrdset_done(d->st_util);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(d->do_mops == CONFIG_BOOLEAN_YES || (d->do_mops == CONFIG_BOOLEAN_AUTO &&
+ (mreads || mwrites || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+ d->do_mops = CONFIG_BOOLEAN_YES;
+
+ if(unlikely(!d->st_mops)) {
+ d->st_mops = rrdset_create_localhost(
+ "disk_mops"
+ , d->device
+ , d->disk
+ , family
+ , "disk.mops"
+ , "Disk Merged Operations"
+ , "merged operations/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+ , NETDATA_CHART_PRIO_DISK_MOPS
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rrdset_flag_set(d->st_mops, RRDSET_FLAG_DETAIL);
+
+ d->rd_mops_reads = rrddim_add(d->st_mops, "reads", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ d->rd_mops_writes = rrddim_add(d->st_mops, "writes", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(d->st_mops);
+
+ rrddim_set_by_pointer(d->st_mops, d->rd_mops_reads, mreads);
+ rrddim_set_by_pointer(d->st_mops, d->rd_mops_writes, mwrites);
+ rrdset_done(d->st_mops);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(d->do_iotime == CONFIG_BOOLEAN_YES || (d->do_iotime == CONFIG_BOOLEAN_AUTO &&
+ (readms || writems || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+ d->do_iotime = CONFIG_BOOLEAN_YES;
+
+ if(unlikely(!d->st_iotime)) {
+ d->st_iotime = rrdset_create_localhost(
+ "disk_iotime"
+ , d->device
+ , d->disk
+ , family
+ , "disk.iotime"
+ , "Disk Total I/O Time"
+ , "milliseconds/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+ , NETDATA_CHART_PRIO_DISK_IOTIME
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rrdset_flag_set(d->st_iotime, RRDSET_FLAG_DETAIL);
+
+ d->rd_iotime_reads = rrddim_add(d->st_iotime, "reads", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ d->rd_iotime_writes = rrddim_add(d->st_iotime, "writes", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(d->st_iotime);
+
+ last_readms = rrddim_set_by_pointer(d->st_iotime, d->rd_iotime_reads, readms);
+ last_writems = rrddim_set_by_pointer(d->st_iotime, d->rd_iotime_writes, writems);
+ rrdset_done(d->st_iotime);
+ }
+
+ // --------------------------------------------------------------------
+ // calculate differential charts
+ // only if this is not the first time we run
+
+ if(likely(dt)) {
+ if( (d->do_iotime == CONFIG_BOOLEAN_YES || (d->do_iotime == CONFIG_BOOLEAN_AUTO &&
+ (readms || writems ||
+ netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) &&
+ (d->do_ops == CONFIG_BOOLEAN_YES || (d->do_ops == CONFIG_BOOLEAN_AUTO &&
+ (reads || writes ||
+ netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES)))) {
+
+ if(unlikely(!d->st_await)) {
+ d->st_await = rrdset_create_localhost(
+ "disk_await"
+ , d->device
+ , d->disk
+ , family
+ , "disk.await"
+ , "Average Completed I/O Operation Time"
+ , "milliseconds/operation"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+ , NETDATA_CHART_PRIO_DISK_AWAIT
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rrdset_flag_set(d->st_await, RRDSET_FLAG_DETAIL);
+
+ d->rd_await_reads = rrddim_add(d->st_await, "reads", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ d->rd_await_writes = rrddim_add(d->st_await, "writes", NULL, -1, 1, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(d->st_await);
+
+ rrddim_set_by_pointer(d->st_await, d->rd_await_reads, (reads - last_reads) ? (readms - last_readms) / (reads - last_reads) : 0);
+ rrddim_set_by_pointer(d->st_await, d->rd_await_writes, (writes - last_writes) ? (writems - last_writems) / (writes - last_writes) : 0);
+ rrdset_done(d->st_await);
+ }
+
+ if( (d->do_io == CONFIG_BOOLEAN_YES || (d->do_io == CONFIG_BOOLEAN_AUTO &&
+ (readsectors || writesectors || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) &&
+ (d->do_ops == CONFIG_BOOLEAN_YES || (d->do_ops == CONFIG_BOOLEAN_AUTO &&
+ (reads || writes || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES)))) {
+
+ if(unlikely(!d->st_avgsz)) {
+ d->st_avgsz = rrdset_create_localhost(
+ "disk_avgsz"
+ , d->device
+ , d->disk
+ , family
+ , "disk.avgsz"
+ , "Average Completed I/O Operation Bandwidth"
+ , "KiB/operation"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+ , NETDATA_CHART_PRIO_DISK_AVGSZ
+ , update_every
+ , RRDSET_TYPE_AREA
+ );
+
+ rrdset_flag_set(d->st_avgsz, RRDSET_FLAG_DETAIL);
+
+ d->rd_avgsz_reads = rrddim_add(d->st_avgsz, "reads", NULL, d->sector_size, 1024, RRD_ALGORITHM_ABSOLUTE);
+ d->rd_avgsz_writes = rrddim_add(d->st_avgsz, "writes", NULL, d->sector_size * -1, 1024, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(d->st_avgsz);
+
+ rrddim_set_by_pointer(d->st_avgsz, d->rd_avgsz_reads, (reads - last_reads) ? (readsectors - last_readsectors) / (reads - last_reads) : 0);
+ rrddim_set_by_pointer(d->st_avgsz, d->rd_avgsz_writes, (writes - last_writes) ? (writesectors - last_writesectors) / (writes - last_writes) : 0);
+ rrdset_done(d->st_avgsz);
+ }
+
+ if( (d->do_util == CONFIG_BOOLEAN_YES || (d->do_util == CONFIG_BOOLEAN_AUTO &&
+ (busy_ms ||
+ netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) &&
+ (d->do_ops == CONFIG_BOOLEAN_YES || (d->do_ops == CONFIG_BOOLEAN_AUTO &&
+ (reads || writes ||
+ netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES)))) {
+
+ if(unlikely(!d->st_svctm)) {
+ d->st_svctm = rrdset_create_localhost(
+ "disk_svctm"
+ , d->device
+ , d->disk
+ , family
+ , "disk.svctm"
+ , "Average Service Time"
+ , "milliseconds/operation"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+ , NETDATA_CHART_PRIO_DISK_SVCTM
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rrdset_flag_set(d->st_svctm, RRDSET_FLAG_DETAIL);
+
+ d->rd_svctm_svctm = rrddim_add(d->st_svctm, "svctm", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(d->st_svctm);
+
+ rrddim_set_by_pointer(d->st_svctm, d->rd_svctm_svctm, ((reads - last_reads) + (writes - last_writes)) ? (busy_ms - last_busy_ms) / ((reads - last_reads) + (writes - last_writes)) : 0);
+ rrdset_done(d->st_svctm);
+ }
+ }
+
+ // --------------------------------------------------------------------------
+ // read bcache metrics and generate the bcache charts
+
+ if(d->device_is_bcache && d->do_bcache != CONFIG_BOOLEAN_NO) {
+ unsigned long long int
+ stats_total_cache_bypass_hits = 0,
+ stats_total_cache_bypass_misses = 0,
+ stats_total_cache_hits = 0,
+ stats_total_cache_miss_collisions = 0,
+ stats_total_cache_misses = 0,
+ stats_five_minute_cache_hit_ratio = 0,
+ stats_hour_cache_hit_ratio = 0,
+ stats_day_cache_hit_ratio = 0,
+ stats_total_cache_hit_ratio = 0,
+ cache_available_percent = 0,
+ cache_readaheads = 0,
+ cache_read_races = 0,
+ cache_io_errors = 0,
+ cache_congested = 0,
+ dirty_data = 0,
+ writeback_rate = 0;
+
+ // read the bcache values
+
+ if(d->bcache_filename_dirty_data)
+ dirty_data = bcache_read_number_with_units(d->bcache_filename_dirty_data);
+
+ if(d->bcache_filename_writeback_rate)
+ writeback_rate = bcache_read_number_with_units(d->bcache_filename_writeback_rate);
+
+ if(d->bcache_filename_cache_congested)
+ cache_congested = bcache_read_number_with_units(d->bcache_filename_cache_congested);
+
+ if(d->bcache_filename_cache_available_percent)
+ read_single_number_file(d->bcache_filename_cache_available_percent, &cache_available_percent);
+
+ if(d->bcache_filename_stats_five_minute_cache_hit_ratio)
+ read_single_number_file(d->bcache_filename_stats_five_minute_cache_hit_ratio, &stats_five_minute_cache_hit_ratio);
+
+ if(d->bcache_filename_stats_hour_cache_hit_ratio)
+ read_single_number_file(d->bcache_filename_stats_hour_cache_hit_ratio, &stats_hour_cache_hit_ratio);
+
+ if(d->bcache_filename_stats_day_cache_hit_ratio)
+ read_single_number_file(d->bcache_filename_stats_day_cache_hit_ratio, &stats_day_cache_hit_ratio);
+
+ if(d->bcache_filename_stats_total_cache_hit_ratio)
+ read_single_number_file(d->bcache_filename_stats_total_cache_hit_ratio, &stats_total_cache_hit_ratio);
+
+ if(d->bcache_filename_stats_total_cache_hits)
+ read_single_number_file(d->bcache_filename_stats_total_cache_hits, &stats_total_cache_hits);
+
+ if(d->bcache_filename_stats_total_cache_misses)
+ read_single_number_file(d->bcache_filename_stats_total_cache_misses, &stats_total_cache_misses);
+
+ if(d->bcache_filename_stats_total_cache_miss_collisions)
+ read_single_number_file(d->bcache_filename_stats_total_cache_miss_collisions, &stats_total_cache_miss_collisions);
+
+ if(d->bcache_filename_stats_total_cache_bypass_hits)
+ read_single_number_file(d->bcache_filename_stats_total_cache_bypass_hits, &stats_total_cache_bypass_hits);
+
+ if(d->bcache_filename_stats_total_cache_bypass_misses)
+ read_single_number_file(d->bcache_filename_stats_total_cache_bypass_misses, &stats_total_cache_bypass_misses);
+
+ if(d->bcache_filename_stats_total_cache_readaheads)
+ cache_readaheads = bcache_read_number_with_units(d->bcache_filename_stats_total_cache_readaheads);
+
+ if(d->bcache_filename_cache_read_races)
+ read_single_number_file(d->bcache_filename_cache_read_races, &cache_read_races);
+
+ if(d->bcache_filename_cache_io_errors)
+ read_single_number_file(d->bcache_filename_cache_io_errors, &cache_io_errors);
+
+ if(d->bcache_filename_priority_stats && global_bcache_priority_stats_update_every >= 1)
+ bcache_read_priority_stats(d, family, global_bcache_priority_stats_update_every, dt);
+
+ // update the charts
+
+ {
+ if(unlikely(!d->st_bcache_hit_ratio)) {
+ d->st_bcache_hit_ratio = rrdset_create_localhost(
+ "disk_bcache_hit_ratio"
+ , d->device
+ , d->disk
+ , family
+ , "disk.bcache_hit_ratio"
+ , "BCache Cache Hit Ratio"
+ , "percentage"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+ , NETDATA_CHART_PRIO_BCACHE_HIT_RATIO
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ d->rd_bcache_hit_ratio_5min = rrddim_add(d->st_bcache_hit_ratio, "5min", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ d->rd_bcache_hit_ratio_1hour = rrddim_add(d->st_bcache_hit_ratio, "1hour", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ d->rd_bcache_hit_ratio_1day = rrddim_add(d->st_bcache_hit_ratio, "1day", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ d->rd_bcache_hit_ratio_total = rrddim_add(d->st_bcache_hit_ratio, "ever", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(d->st_bcache_hit_ratio);
+
+ rrddim_set_by_pointer(d->st_bcache_hit_ratio, d->rd_bcache_hit_ratio_5min, stats_five_minute_cache_hit_ratio);
+ rrddim_set_by_pointer(d->st_bcache_hit_ratio, d->rd_bcache_hit_ratio_1hour, stats_hour_cache_hit_ratio);
+ rrddim_set_by_pointer(d->st_bcache_hit_ratio, d->rd_bcache_hit_ratio_1day, stats_day_cache_hit_ratio);
+ rrddim_set_by_pointer(d->st_bcache_hit_ratio, d->rd_bcache_hit_ratio_total, stats_total_cache_hit_ratio);
+ rrdset_done(d->st_bcache_hit_ratio);
+ }
+
+ {
+
+ if(unlikely(!d->st_bcache_rates)) {
+ d->st_bcache_rates = rrdset_create_localhost(
+ "disk_bcache_rates"
+ , d->device
+ , d->disk
+ , family
+ , "disk.bcache_rates"
+ , "BCache Rates"
+ , "KiB/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+ , NETDATA_CHART_PRIO_BCACHE_RATES
+ , update_every
+ , RRDSET_TYPE_AREA
+ );
+
+ d->rd_bcache_rate_congested = rrddim_add(d->st_bcache_rates, "congested", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+ d->rd_bcache_rate_writeback = rrddim_add(d->st_bcache_rates, "writeback", NULL, -1, 1024, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(d->st_bcache_rates);
+
+ rrddim_set_by_pointer(d->st_bcache_rates, d->rd_bcache_rate_writeback, writeback_rate);
+ rrddim_set_by_pointer(d->st_bcache_rates, d->rd_bcache_rate_congested, cache_congested);
+ rrdset_done(d->st_bcache_rates);
+ }
+
+ {
+ if(unlikely(!d->st_bcache_size)) {
+ d->st_bcache_size = rrdset_create_localhost(
+ "disk_bcache_size"
+ , d->device
+ , d->disk
+ , family
+ , "disk.bcache_size"
+ , "BCache Cache Sizes"
+ , "MiB"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+ , NETDATA_CHART_PRIO_BCACHE_SIZE
+ , update_every
+ , RRDSET_TYPE_AREA
+ );
+
+ d->rd_bcache_dirty_size = rrddim_add(d->st_bcache_size, "dirty", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(d->st_bcache_size);
+
+ rrddim_set_by_pointer(d->st_bcache_size, d->rd_bcache_dirty_size, dirty_data);
+ rrdset_done(d->st_bcache_size);
+ }
+
+ {
+ if(unlikely(!d->st_bcache_usage)) {
+ d->st_bcache_usage = rrdset_create_localhost(
+ "disk_bcache_usage"
+ , d->device
+ , d->disk
+ , family
+ , "disk.bcache_usage"
+ , "BCache Cache Usage"
+ , "percentage"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+ , NETDATA_CHART_PRIO_BCACHE_USAGE
+ , update_every
+ , RRDSET_TYPE_AREA
+ );
+
+ d->rd_bcache_available_percent = rrddim_add(d->st_bcache_usage, "avail", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(d->st_bcache_usage);
+
+ rrddim_set_by_pointer(d->st_bcache_usage, d->rd_bcache_available_percent, cache_available_percent);
+ rrdset_done(d->st_bcache_usage);
+ }
+
+ {
+
+ if(unlikely(!d->st_bcache_cache_read_races)) {
+ d->st_bcache_cache_read_races = rrdset_create_localhost(
+ "disk_bcache_cache_read_races"
+ , d->device
+ , d->disk
+ , family
+ , "disk.bcache_cache_read_races"
+ , "BCache Cache Read Races"
+ , "operations/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+ , NETDATA_CHART_PRIO_BCACHE_CACHE_READ_RACES
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ d->rd_bcache_cache_read_races = rrddim_add(d->st_bcache_cache_read_races, "races", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ d->rd_bcache_cache_io_errors = rrddim_add(d->st_bcache_cache_read_races, "errors", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(d->st_bcache_cache_read_races);
+
+ rrddim_set_by_pointer(d->st_bcache_cache_read_races, d->rd_bcache_cache_read_races, cache_read_races);
+ rrddim_set_by_pointer(d->st_bcache_cache_read_races, d->rd_bcache_cache_io_errors, cache_io_errors);
+ rrdset_done(d->st_bcache_cache_read_races);
+ }
+
+ if(d->do_bcache == CONFIG_BOOLEAN_YES || (d->do_bcache == CONFIG_BOOLEAN_AUTO &&
+ (stats_total_cache_hits ||
+ stats_total_cache_misses ||
+ stats_total_cache_miss_collisions ||
+ netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+
+ if(unlikely(!d->st_bcache)) {
+ d->st_bcache = rrdset_create_localhost(
+ "disk_bcache"
+ , d->device
+ , d->disk
+ , family
+ , "disk.bcache"
+ , "BCache Cache I/O Operations"
+ , "operations/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+ , NETDATA_CHART_PRIO_BCACHE_OPS
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rrdset_flag_set(d->st_bcache, RRDSET_FLAG_DETAIL);
+
+ d->rd_bcache_hits = rrddim_add(d->st_bcache, "hits", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ d->rd_bcache_misses = rrddim_add(d->st_bcache, "misses", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+ d->rd_bcache_miss_collisions = rrddim_add(d->st_bcache, "collisions", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+ d->rd_bcache_readaheads = rrddim_add(d->st_bcache, "readaheads", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(d->st_bcache);
+
+ rrddim_set_by_pointer(d->st_bcache, d->rd_bcache_hits, stats_total_cache_hits);
+ rrddim_set_by_pointer(d->st_bcache, d->rd_bcache_misses, stats_total_cache_misses);
+ rrddim_set_by_pointer(d->st_bcache, d->rd_bcache_miss_collisions, stats_total_cache_miss_collisions);
+ rrddim_set_by_pointer(d->st_bcache, d->rd_bcache_readaheads, cache_readaheads);
+ rrdset_done(d->st_bcache);
+ }
+
+ if(d->do_bcache == CONFIG_BOOLEAN_YES || (d->do_bcache == CONFIG_BOOLEAN_AUTO &&
+ (stats_total_cache_bypass_hits ||
+ stats_total_cache_bypass_misses ||
+ netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+
+ if(unlikely(!d->st_bcache_bypass)) {
+ d->st_bcache_bypass = rrdset_create_localhost(
+ "disk_bcache_bypass"
+ , d->device
+ , d->disk
+ , family
+ , "disk.bcache_bypass"
+ , "BCache Cache Bypass I/O Operations"
+ , "operations/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+ , NETDATA_CHART_PRIO_BCACHE_BYPASS
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rrdset_flag_set(d->st_bcache_bypass, RRDSET_FLAG_DETAIL);
+
+ d->rd_bcache_bypass_hits = rrddim_add(d->st_bcache_bypass, "hits", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ d->rd_bcache_bypass_misses = rrddim_add(d->st_bcache_bypass, "misses", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(d->st_bcache_bypass);
+
+ rrddim_set_by_pointer(d->st_bcache_bypass, d->rd_bcache_bypass_hits, stats_total_cache_bypass_hits);
+ rrddim_set_by_pointer(d->st_bcache_bypass, d->rd_bcache_bypass_misses, stats_total_cache_bypass_misses);
+ rrdset_done(d->st_bcache_bypass);
+ }
+ }
+ }
+
+
+ // ------------------------------------------------------------------------
+ // update the system total I/O
+
+ if(global_do_io == CONFIG_BOOLEAN_YES || (global_do_io == CONFIG_BOOLEAN_AUTO &&
+ (system_read_kb || system_write_kb ||
+ netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+ static RRDSET *st_io = NULL;
+ static RRDDIM *rd_in = NULL, *rd_out = NULL;
+
+ if(unlikely(!st_io)) {
+ st_io = rrdset_create_localhost(
+ "system"
+ , "io"
+ , NULL
+ , "disk"
+ , NULL
+ , "Disk I/O"
+ , "KiB/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_DISKSTATS_NAME
+ , NETDATA_CHART_PRIO_SYSTEM_IO
+ , update_every
+ , RRDSET_TYPE_AREA
+ );
+
+ rd_in = rrddim_add(st_io, "in", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_out = rrddim_add(st_io, "out", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(st_io);
+
+ rrddim_set_by_pointer(st_io, rd_in, system_read_kb);
+ rrddim_set_by_pointer(st_io, rd_out, system_write_kb);
+ rrdset_done(st_io);
+ }
+
+
+ // ------------------------------------------------------------------------
+ // cleanup removed disks
+
+ struct disk *d = disk_root, *last = NULL;
+ while(d) {
+ if(unlikely(global_cleanup_removed_disks && !d->updated)) {
+ struct disk *t = d;
+
+ rrdset_obsolete_and_pointer_null(d->st_avgsz);
+ rrdset_obsolete_and_pointer_null(d->st_await);
+ rrdset_obsolete_and_pointer_null(d->st_backlog);
+ rrdset_obsolete_and_pointer_null(d->st_io);
+ rrdset_obsolete_and_pointer_null(d->st_iotime);
+ rrdset_obsolete_and_pointer_null(d->st_mops);
+ rrdset_obsolete_and_pointer_null(d->st_ops);
+ rrdset_obsolete_and_pointer_null(d->st_qops);
+ rrdset_obsolete_and_pointer_null(d->st_svctm);
+ rrdset_obsolete_and_pointer_null(d->st_util);
+ rrdset_obsolete_and_pointer_null(d->st_bcache);
+ rrdset_obsolete_and_pointer_null(d->st_bcache_bypass);
+ rrdset_obsolete_and_pointer_null(d->st_bcache_rates);
+ rrdset_obsolete_and_pointer_null(d->st_bcache_size);
+ rrdset_obsolete_and_pointer_null(d->st_bcache_usage);
+ rrdset_obsolete_and_pointer_null(d->st_bcache_hit_ratio);
+
+ if(d == disk_root) {
+ disk_root = d = d->next;
+ last = NULL;
+ }
+ else if(last) {
+ last->next = d = d->next;
+ }
+
+ freez(t->bcache_filename_dirty_data);
+ freez(t->bcache_filename_writeback_rate);
+ freez(t->bcache_filename_cache_congested);
+ freez(t->bcache_filename_cache_available_percent);
+ freez(t->bcache_filename_stats_five_minute_cache_hit_ratio);
+ freez(t->bcache_filename_stats_hour_cache_hit_ratio);
+ freez(t->bcache_filename_stats_day_cache_hit_ratio);
+ freez(t->bcache_filename_stats_total_cache_hit_ratio);
+ freez(t->bcache_filename_stats_total_cache_hits);
+ freez(t->bcache_filename_stats_total_cache_misses);
+ freez(t->bcache_filename_stats_total_cache_miss_collisions);
+ freez(t->bcache_filename_stats_total_cache_bypass_hits);
+ freez(t->bcache_filename_stats_total_cache_bypass_misses);
+ freez(t->bcache_filename_stats_total_cache_readaheads);
+ freez(t->bcache_filename_cache_read_races);
+ freez(t->bcache_filename_cache_io_errors);
+ freez(t->bcache_filename_priority_stats);
+
+ freez(t->disk);
+ freez(t->device);
+ freez(t->mount_point);
+ freez(t);
+ }
+ else {
+ d->updated = 0;
+ last = d;
+ d = d->next;
+ }
+ }
+
+ return 0;
+}