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-rw-r--r--src/proc_diskstats.c1438
1 files changed, 0 insertions, 1438 deletions
diff --git a/src/proc_diskstats.c b/src/proc_diskstats.c
deleted file mode 100644
index 8cde3334b..000000000
--- a/src/proc_diskstats.c
+++ /dev/null
@@ -1,1438 +0,0 @@
-#include "common.h"
-
-#define RRD_TYPE_DISK "disk"
-
-#define DISK_TYPE_UNKNOWN 0
-#define DISK_TYPE_PHYSICAL 1
-#define DISK_TYPE_PARTITION 2
-#define DISK_TYPE_VIRTUAL 3
-
-#define CONFIG_SECTION_DISKSTATS "plugin:proc:/proc/diskstats"
-#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;
-
- 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;
-
- 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 int name_disks_by_id = CONFIG_BOOLEAN_NO;
-
-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 *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(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;
-}
-
-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_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 filename[FILENAME_MAX + 1];
- int found = 0;
-
- result_size--;
-
- DIR *dir = opendir(path);
- if (!dir) {
- error("DEVICE-MAPPER ('%s', %lu:%lu): Cannot open directory '%s'. Disabling device-mapper support.", disk, major, minor, path);
- goto cleanup;
- }
-
- struct dirent *de = NULL;
- while ((de = readdir(dir))) {
- if(de->d_type != DT_LNK) continue;
-
- snprintfz(filename, FILENAME_MAX, "%s/%s", path, de->d_name);
- ssize_t len = readlink(filename, result, result_size);
- 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);
-
- 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);
-
- strncpy(result, de->d_name, result_size);
- found = 1;
- break;
- }
- closedir(dir);
-
-
-cleanup:
-
- if(!found)
- result[0] = '\0';
-
- 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))
- 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))
- 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))
- 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, "plugin:proc:/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/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_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_DISKSTATS, "performance metrics for physical disks", global_enable_performance_for_physical_disks);
- global_enable_performance_for_virtual_disks = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "performance metrics for virtual disks", global_enable_performance_for_virtual_disks);
- global_enable_performance_for_partitions = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "performance metrics for partitions", global_enable_performance_for_partitions);
-
- global_do_io = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "bandwidth for all disks", global_do_io);
- global_do_ops = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "operations for all disks", global_do_ops);
- global_do_mops = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "merged operations for all disks", global_do_mops);
- global_do_iotime = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "i/o time for all disks", global_do_iotime);
- global_do_qops = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "queued operations for all disks", global_do_qops);
- global_do_util = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "utilization percentage for all disks", global_do_util);
- global_do_backlog = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "backlog for all disks", global_do_backlog);
- global_do_bcache = config_get_boolean_ondemand(CONFIG_SECTION_DISKSTATS, "bcache for all disks", global_do_bcache);
-
- global_cleanup_removed_disks = config_get_boolean(CONFIG_SECTION_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_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_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_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_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_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_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_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_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_DISKSTATS, "path to /dev/disk/by-id", buffer);
-
- name_disks_by_id = config_get_boolean(CONFIG_SECTION_DISKSTATS, "name disks by id", name_disks_by_id);
-
- excluded_disks = simple_pattern_create(
- config_get(CONFIG_SECTION_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_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))) {
- 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"
- , "kilobytes/s"
- , "proc"
- , "diskstats"
- , 2000
- , 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))) {
- 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"
- , "proc"
- , "diskstats"
- , 2001
- , 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)) {
- 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"
- , "proc"
- , "diskstats"
- , 2002
- , 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)) {
- 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"
- , "backlog (ms)"
- , "proc"
- , "diskstats"
- , 2003
- , 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)) {
- 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"
- , "proc"
- , "diskstats"
- , 2004
- , 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))) {
- 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"
- , "proc"
- , "diskstats"
- , 2021
- , 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))) {
- 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"
- , "proc"
- , "diskstats"
- , 2022
- , 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))) &&
- (d->do_ops == CONFIG_BOOLEAN_YES || (d->do_ops == CONFIG_BOOLEAN_AUTO && (reads || writes)))) {
-
- 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"
- , "ms per operation"
- , "proc"
- , "diskstats"
- , 2005
- , 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))) &&
- (d->do_ops == CONFIG_BOOLEAN_YES || (d->do_ops == CONFIG_BOOLEAN_AUTO && (reads || writes)))) {
-
- 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"
- , "kilobytes per operation"
- , "proc"
- , "diskstats"
- , 2006
- , 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)) &&
- (d->do_ops == CONFIG_BOOLEAN_YES || (d->do_ops == CONFIG_BOOLEAN_AUTO && (reads || writes)))) {
-
- if(unlikely(!d->st_svctm)) {
- d->st_svctm = rrdset_create_localhost(
- "disk_svctm"
- , d->device
- , d->disk
- , family
- , "disk.svctm"
- , "Average Service Time"
- , "ms per operation"
- , "proc"
- , "diskstats"
- , 2007
- , 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_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);
-
-
- // 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"
- , "proc"
- , "diskstats"
- , 2120
- , 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"
- , "KB/s"
- , "proc"
- , "diskstats"
- , 2121
- , 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"
- , "MB"
- , "proc"
- , "diskstats"
- , 2122
- , 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"
- , "percent"
- , "proc"
- , "diskstats"
- , 2123
- , 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(d->do_bcache == CONFIG_BOOLEAN_YES || (d->do_bcache == CONFIG_BOOLEAN_AUTO && (stats_total_cache_hits != 0 || stats_total_cache_misses != 0 || stats_total_cache_miss_collisions != 0))) {
-
- 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"
- , "proc"
- , "diskstats"
- , 2124
- , 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 != 0 || stats_total_cache_bypass_misses != 0))) {
-
- 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"
- , "proc"
- , "diskstats"
- , 2125
- , 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))) {
- 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"
- , "kilobytes/s"
- , "proc"
- , "diskstats"
- , 150
- , 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->disk);
- freez(t->device);
- freez(t->mount_point);
- freez(t);
- }
- else {
- d->updated = 0;
- last = d;
- d = d->next;
- }
- }
-
- return 0;
-}