diff options
Diffstat (limited to 'collectors/proc.plugin/proc_diskstats.c')
| -rw-r--r-- | collectors/proc.plugin/proc_diskstats.c | 1649 |
1 files changed, 1649 insertions, 0 deletions
diff --git a/collectors/proc.plugin/proc_diskstats.c b/collectors/proc.plugin/proc_diskstats.c new file mode 100644 index 000000000..387b395a3 --- /dev/null +++ b/collectors/proc.plugin/proc_diskstats.c @@ -0,0 +1,1649 @@ +// 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_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 *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; +} + +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; + + 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); + found = 1; + break; + } + } + closedir(dir); + + +failed: + + 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, 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); + + 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))) { + 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" + , 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))) { + 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)) { + 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)) { + 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)" + , 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)) { + 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))) { + 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))) { + 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))) && + (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" + , 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))) && + (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" + , 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)) && + (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" + , 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" + , "KB/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" + , "MB" + , 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" + , "percent" + , 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 != 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" + , 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 != 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" + , 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))) { + 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" + , 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; +} |