X-Git-Url: https://arthur.barton.de/gitweb/?a=blobdiff_plain;f=src%2Fproc_diskstats.c;h=a1b4072dd93ec81a6805f70f2b4b2cc0a28125f1;hb=9dccc16d3763392f0b13349de18c3a838a667653;hp=78c8092dfe769f769e24bd90d67f9f9c8b21da52;hpb=0aae101cb6c264ab8e8e85ded13e25e0c6bb8c47;p=netdata.git diff --git a/src/proc_diskstats.c b/src/proc_diskstats.c index 78c8092d..a1b4072d 100644 --- a/src/proc_diskstats.c +++ b/src/proc_diskstats.c @@ -1,25 +1,4 @@ -#ifdef HAVE_CONFIG_H -#include -#endif -#include -#include -#include -#include -#include -#include -#include -#include -#include - - #include "common.h" -#include "log.h" -#include "appconfig.h" -#include "procfile.h" -#include "rrd.h" -#include "plugin_proc.h" - -#include "proc_self_mountinfo.h" #define RRD_TYPE_DISK "disk" @@ -27,696 +6,778 @@ #define DISK_TYPE_PARTITION 2 #define DISK_TYPE_CONTAINER 3 +#define CONFIG_SECTION_DISKSTATS "plugin:proc:/proc/diskstats" +#define DELAULT_EXLUDED_DISKS "loop* ram*" + static struct disk { - char *disk; // the name of the disk (sda, sdb, etc) - unsigned long major; - unsigned long minor; - int sector_size; - int type; - char *mount_point; - - // disk options caching - int configured; - int do_io; - int do_ops; - int do_mops; - int do_iotime; - int do_qops; - int do_util; - int do_backlog; - int do_space; - int do_inodes; - - struct disk *next; + char *disk; // the name of the disk (sda, sdb, etc) + unsigned long major; + unsigned long minor; + int sector_size; + int type; + + char *mount_point; + + // disk options caching + int configured; + int do_io; + int do_ops; + int do_mops; + int do_iotime; + int do_qops; + int do_util; + int do_backlog; + + int updated; + + RRDSET *st_avgsz; + RRDSET *st_await; + RRDSET *st_backlog; + RRDSET *st_io; + RRDSET *st_iotime; + RRDSET *st_mops; + RRDSET *st_ops; + RRDSET *st_qops; + RRDSET *st_svctm; + RRDSET *st_util; + + struct disk *next; } *disk_root = NULL; -static struct mountinfo *disk_mountinfo_root = NULL; +#define rrdset_obsolete_and_pointer_null(st) do { if(st) { rrdset_flag_set(st, RRDSET_FLAG_OBSOLETE); st = NULL; } } while(st) static struct disk *get_disk(unsigned long major, unsigned long minor, char *disk) { - static char path_to_get_hw_sector_size[FILENAME_MAX + 1] = ""; - static char path_to_get_hw_sector_size_partitions[FILENAME_MAX + 1] = ""; - static char path_find_block_device[FILENAME_MAX + 1] = ""; - 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)) - break; - - // if we found it, return it - if(likely(d)) - return d; - - // not found - // create a new disk structure - d = (struct disk *)malloc(sizeof(struct disk)); - if(!d) fatal("Cannot allocate memory for struct disk in proc_diskstats."); - - d->disk = strdup(disk); - d->major = major; - d->minor = minor; - d->type = DISK_TYPE_PHYSICAL; // Default type. Changed later if not correct. - d->configured = 0; - d->sector_size = 512; // the default, will be changed below - d->next = NULL; - - // append it to the list - if(!disk_root) - disk_root = d; - else { - struct disk *last; - for(last = disk_root; last->next ;last = last->next); - last->next = d; - } - - // ------------------------------------------------------------------------ - // find the type of the device - - char buffer[FILENAME_MAX + 1]; - - // get the default path for finding info about the block device - if(unlikely(!path_find_block_device[0])) { - snprintfz(buffer, FILENAME_MAX, "%s%s", global_host_prefix, "/sys/dev/block/%lu:%lu/%s"); - snprintfz(path_find_block_device, FILENAME_MAX, "%s", config_get("plugin:proc:/proc/diskstats", "path to get block device infos", buffer)); - } - - // find if it is a partition - // by checking if /sys/dev/block/MAJOR:MINOR/partition is readable. - snprintfz(buffer, FILENAME_MAX, path_find_block_device, major, minor, "partition"); - if(access(buffer, R_OK) == 0) { - d->type = DISK_TYPE_PARTITION; - } else { - // find if it is a container - // by checking if /sys/dev/block/MAJOR:MINOR/slaves has entries - snprintfz(buffer, FILENAME_MAX, path_find_block_device, major, minor, "slaves/"); - DIR *dirp = opendir(buffer); - if (dirp != NULL) { - struct dirent *dp; - while( (dp = readdir(dirp)) ) { - // . and .. are also files in empty folders. - if(strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..") == 0) { - continue; - } - - d->type = DISK_TYPE_CONTAINER; - - // Stop the loop after we found one file. - break; - } - if(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() can be called with NULL disk_mountinfo_root - mountinfo_free(disk_mountinfo_root); - - // re-read mountinfo in case something changed - disk_mountinfo_root = mountinfo_read(); - - // search again for this disk - mi = mountinfo_find(disk_mountinfo_root, d->major, d->minor); - } - - if(mi) - d->mount_point = strdup(mi->mount_point); - // no need to check for NULL - else - d->mount_point = NULL; - - // ------------------------------------------------------------------------ - // find the disk sector size - - if(!path_to_get_hw_sector_size[0]) { - snprintfz(buffer, FILENAME_MAX, "%s%s", global_host_prefix, "/sys/block/%s/queue/hw_sector_size"); - snprintfz(path_to_get_hw_sector_size, FILENAME_MAX, "%s", config_get("plugin:proc:/proc/diskstats", "path to get h/w sector size", buffer)); - } - if(!path_to_get_hw_sector_size_partitions[0]) { - snprintfz(buffer, FILENAME_MAX, "%s%s", global_host_prefix, "/sys/dev/block/%lu:%lu/subsystem/%s/../queue/hw_sector_size"); - snprintfz(path_to_get_hw_sector_size_partitions, FILENAME_MAX, "%s", config_get("plugin:proc:/proc/diskstats", "path to get h/w sector size for partitions", buffer)); - } - - { - char tf[FILENAME_MAX + 1], *t; - strncpyz(tf, d->disk, FILENAME_MAX); - - // replace all / with ! - for(t = tf; *t ;t++) - if(*t == '/') *t = '!'; - - if(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(fpss) { - char buffer2[1024 + 1]; - char *tmp = fgets(buffer2, 1024, fpss); - - if(tmp) { - d->sector_size = atoi(tmp); - if(d->sector_size <= 0) { - error("Invalid sector size %d for device %s in %s. Assuming 512.", d->sector_size, d->disk, buffer); - d->sector_size = 512; - } - } - else error("Cannot read data for sector size for device %s from %s. Assuming 512.", d->disk, buffer); - - fclose(fpss); - } - else error("Cannot read sector size for device %s from %s. Assuming 512.", d->disk, buffer); - } - - return d; + static char path_to_get_hw_sector_size[FILENAME_MAX + 1] = ""; + static char path_to_get_hw_sector_size_partitions[FILENAME_MAX + 1] = ""; + static char path_find_block_device[FILENAME_MAX + 1] = ""; + 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 = strdupz(disk); + d->major = major; + d->minor = minor; + d->type = DISK_TYPE_PHYSICAL; // Default type. Changed later if not correct. + d->configured = 0; + 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; + } + + // ------------------------------------------------------------------------ + // find the type of the device + + char buffer[FILENAME_MAX + 1]; + + // get the default path for finding info about the block device + if(unlikely(!path_find_block_device[0])) { + snprintfz(buffer, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/dev/block/%lu:%lu/%s"); + snprintfz(path_find_block_device, FILENAME_MAX, "%s", config_get(CONFIG_SECTION_DISKSTATS, "path to get block device infos", buffer)); + } + + // find if it is a partition + // by checking if /sys/dev/block/MAJOR:MINOR/partition is readable. + snprintfz(buffer, FILENAME_MAX, path_find_block_device, major, minor, "partition"); + if(likely(access(buffer, R_OK) == 0)) { + d->type = DISK_TYPE_PARTITION; + } + else { + // find if it is a container + // by checking if /sys/dev/block/MAJOR:MINOR/slaves has entries + snprintfz(buffer, FILENAME_MAX, path_find_block_device, 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_CONTAINER; + + // 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 can be called with NULL + mountinfo_free(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 + + if(unlikely(!path_to_get_hw_sector_size[0])) { + snprintfz(buffer, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/block/%s/queue/hw_sector_size"); + snprintfz(path_to_get_hw_sector_size, FILENAME_MAX, "%s", config_get(CONFIG_SECTION_DISKSTATS, "path to get h/w sector size", buffer)); + } + if(unlikely(!path_to_get_hw_sector_size_partitions[0])) { + snprintfz(buffer, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/dev/block/%lu:%lu/subsystem/%s/../queue/hw_sector_size"); + snprintfz(path_to_get_hw_sector_size_partitions, FILENAME_MAX, "%s", config_get(CONFIG_SECTION_DISKSTATS, "path to get h/w sector size for partitions", buffer)); + } + + { + char tf[FILENAME_MAX + 1], *t; + strncpyz(tf, d->disk, 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->disk, buffer); + d->sector_size = 512; + } + } + else error("Cannot read data for sector size for device %s from %s. Assuming 512.", d->disk, buffer); + + fclose(fpss); + } + else error("Cannot read sector size for device %s from %s. Assuming 512.", d->disk, buffer); + } + + return d; } -static inline int select_positive_option(int option1, int option2) { - if(option1 == CONFIG_ONDEMAND_YES || option2 == CONFIG_ONDEMAND_YES) - return CONFIG_ONDEMAND_YES; - else if(option1 == CONFIG_ONDEMAND_ONDEMAND || option2 == CONFIG_ONDEMAND_ONDEMAND) - return CONFIG_ONDEMAND_ONDEMAND; +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 CONFIG_ONDEMAND_NO; + return (int)major_configs[major]; } -int do_proc_diskstats(int update_every, unsigned long long dt) { - static procfile *ff = NULL; - static struct statvfs buff_statvfs; - static struct stat buff_stat; - static int global_enable_new_disks_detected_at_runtime = CONFIG_ONDEMAND_YES, - global_enable_performance_for_physical_disks = CONFIG_ONDEMAND_ONDEMAND, - global_enable_performance_for_virtual_disks = CONFIG_ONDEMAND_NO, - global_enable_performance_for_partitions = CONFIG_ONDEMAND_NO, - global_enable_performance_for_mountpoints = CONFIG_ONDEMAND_NO, - global_enable_performance_for_virtual_mountpoints = CONFIG_ONDEMAND_ONDEMAND, - global_enable_space_for_mountpoints = CONFIG_ONDEMAND_ONDEMAND, - global_do_io = CONFIG_ONDEMAND_ONDEMAND, - global_do_ops = CONFIG_ONDEMAND_ONDEMAND, - global_do_mops = CONFIG_ONDEMAND_ONDEMAND, - global_do_iotime = CONFIG_ONDEMAND_ONDEMAND, - global_do_qops = CONFIG_ONDEMAND_ONDEMAND, - global_do_util = CONFIG_ONDEMAND_ONDEMAND, - global_do_backlog = CONFIG_ONDEMAND_ONDEMAND, - global_do_space = CONFIG_ONDEMAND_ONDEMAND, - global_do_inodes = CONFIG_ONDEMAND_ONDEMAND, - globals_initialized = 0; - - if(unlikely(!globals_initialized)) { - global_enable_new_disks_detected_at_runtime = config_get_boolean("plugin:proc:/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("plugin:proc:/proc/diskstats", "performance metrics for physical disks", global_enable_performance_for_physical_disks); - global_enable_performance_for_virtual_disks = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "performance metrics for virtual disks", global_enable_performance_for_virtual_disks); - global_enable_performance_for_partitions = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "performance metrics for partitions", global_enable_performance_for_partitions); - global_enable_performance_for_mountpoints = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "performance metrics for mounted filesystems", global_enable_performance_for_mountpoints); - global_enable_performance_for_virtual_mountpoints = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "performance metrics for mounted virtual disks", global_enable_performance_for_virtual_mountpoints); - global_enable_space_for_mountpoints = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "space metrics for mounted filesystems", global_enable_space_for_mountpoints); - - global_do_io = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "bandwidth for all disks", global_do_io); - global_do_ops = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "operations for all disks", global_do_ops); - global_do_mops = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "merged operations for all disks", global_do_mops); - global_do_iotime = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "i/o time for all disks", global_do_iotime); - global_do_qops = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "queued operations for all disks", global_do_qops); - global_do_util = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "utilization percentage for all disks", global_do_util); - global_do_backlog = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "backlog for all disks", global_do_backlog); - global_do_space = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "space usage for all disks", global_do_space); - global_do_inodes = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "inodes usage for all disks", global_do_inodes); - - globals_initialized = 1; - } - - if(!ff) { - char filename[FILENAME_MAX + 1]; - snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/diskstats"); - ff = procfile_open(config_get("plugin:proc:/proc/diskstats", "filename to monitor", filename), " \t", PROCFILE_FLAG_DEFAULT); - } - if(!ff) return 1; - - ff = procfile_readall(ff); - if(!ff) return 0; // we return 0, so that we will retry to open it next time - - uint32_t lines = procfile_lines(ff), l; - uint32_t words; - - for(l = 0; l < lines ;l++) { - // -------------------------------------------------------------------------- - // Read parameters - - char *disk; - unsigned long long major = 0, minor = 0, - 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, - space_avail = 0, space_avail_root = 0, space_used = 0, - inodes_avail = 0, inodes_avail_root = 0, inodes_used = 0; - - unsigned long long last_reads = 0, last_readsectors = 0, last_readms = 0, - last_writes = 0, last_writesectors = 0, last_writems = 0, - last_busy_ms = 0; - - words = procfile_linewords(ff, l); - if(words < 14) continue; - - major = strtoull(procfile_lineword(ff, l, 0), NULL, 10); - minor = strtoull(procfile_lineword(ff, l, 1), NULL, 10); - disk = procfile_lineword(ff, l, 2); - - // # of reads completed # of writes completed - // This is the total number of reads or writes completed successfully. - reads = strtoull(procfile_lineword(ff, l, 3), NULL, 10); // rd_ios - writes = strtoull(procfile_lineword(ff, l, 7), NULL, 10); // 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 = strtoull(procfile_lineword(ff, l, 4), NULL, 10); // rd_merges_or_rd_sec - mwrites = strtoull(procfile_lineword(ff, l, 8), NULL, 10); // wr_merges - - // # of sectors read # of sectors written - // This is the total number of sectors read or written successfully. - readsectors = strtoull(procfile_lineword(ff, l, 5), NULL, 10); // rd_sec_or_wr_ios - writesectors = strtoull(procfile_lineword(ff, l, 9), NULL, 10); // 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 = strtoull(procfile_lineword(ff, l, 6), NULL, 10); // rd_ticks_or_wr_sec - writems = strtoull(procfile_lineword(ff, l, 10), NULL, 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 = strtoull(procfile_lineword(ff, l, 11), NULL, 10); // ios_pgr - - // # of milliseconds spent doing I/Os - // This field increases so long as field queued_ios is nonzero. - busy_ms = strtoull(procfile_lineword(ff, l, 12), NULL, 10); // 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 = strtoull(procfile_lineword(ff, l, 13), NULL, 10); // 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); - - - // -------------------------------------------------------------------------- - // Set its family based on mount point - - char *family = d->mount_point; - if(!family) family = disk; - - - // -------------------------------------------------------------------------- - // Check the configuration for the device - - if(unlikely(!d->configured)) { - char var_name[4096 + 1]; - snprintfz(var_name, 4096, "plugin:proc:/proc/diskstats:%s", disk); - - int def_enable = config_get_boolean_ondemand(var_name, "enable", global_enable_new_disks_detected_at_runtime); - if(def_enable == CONFIG_ONDEMAND_NO) { - // the user does not want any metrics for this disk - d->do_io = CONFIG_ONDEMAND_NO; - d->do_ops = CONFIG_ONDEMAND_NO; - d->do_mops = CONFIG_ONDEMAND_NO; - d->do_iotime = CONFIG_ONDEMAND_NO; - d->do_qops = CONFIG_ONDEMAND_NO; - d->do_util = CONFIG_ONDEMAND_NO; - d->do_backlog = CONFIG_ONDEMAND_NO; - d->do_space = CONFIG_ONDEMAND_NO; - d->do_inodes = CONFIG_ONDEMAND_NO; - } - else { - // this disk is enabled - // check its direct settings - - int def_performance = CONFIG_ONDEMAND_ONDEMAND; - int def_space = (d->mount_point)?CONFIG_ONDEMAND_ONDEMAND:CONFIG_ONDEMAND_NO; - - // since this is 'on demand' we can figure the performance settings - // based on the type of disk - - switch(d->type) { - 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_CONTAINER: - def_performance = global_enable_performance_for_virtual_disks; - - if(d->mount_point) - def_performance = select_positive_option(def_performance, global_enable_performance_for_virtual_mountpoints); - - break; - } - - if(d->mount_point) - def_performance = select_positive_option(def_performance, global_enable_performance_for_mountpoints); - - // ------------------------------------------------------------ - // 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_ONDEMAND_NO, - ddo_ops = CONFIG_ONDEMAND_NO, - ddo_mops = CONFIG_ONDEMAND_NO, - ddo_iotime = CONFIG_ONDEMAND_NO, - ddo_qops = CONFIG_ONDEMAND_NO, - ddo_util = CONFIG_ONDEMAND_NO, - ddo_backlog = CONFIG_ONDEMAND_NO; - - // we enable individual performance charts only when def_performance is not disabled - if(def_performance != CONFIG_ONDEMAND_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; - } - - 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); - - // def_space - if(d->mount_point) { - // check the user configuration (this will also show our 'on demand' decision) - def_space = config_get_boolean_ondemand(var_name, "enable space metrics", def_space); - - int ddo_space = def_space, - ddo_inodes = def_space; - - d->do_space = config_get_boolean_ondemand(var_name, "space usage", ddo_space); - d->do_inodes = config_get_boolean_ondemand(var_name, "inodes usage", ddo_inodes); - } - else { - // don't show settings for this disk - d->do_space = CONFIG_ONDEMAND_NO; - d->do_inodes = CONFIG_ONDEMAND_NO; - } - } - - d->configured = 1; - } - - RRDSET *st; - - // -------------------------------------------------------------------------- - // Do performance metrics - - if(d->do_io == CONFIG_ONDEMAND_YES || (d->do_io == CONFIG_ONDEMAND_ONDEMAND && (readsectors || writesectors))) { - d->do_io = CONFIG_ONDEMAND_YES; - - st = rrdset_find_bytype(RRD_TYPE_DISK, disk); - if(!st) { - st = rrdset_create(RRD_TYPE_DISK, disk, NULL, family, "disk.io", "Disk I/O Bandwidth", "kilobytes/s", 2000, update_every, RRDSET_TYPE_AREA); - - rrddim_add(st, "reads", NULL, d->sector_size, 1024, RRDDIM_INCREMENTAL); - rrddim_add(st, "writes", NULL, d->sector_size * -1, 1024, RRDDIM_INCREMENTAL); - } - else rrdset_next_usec(st, dt); - - last_readsectors = rrddim_set(st, "reads", readsectors); - last_writesectors = rrddim_set(st, "writes", writesectors); - rrdset_done(st); - } - - // -------------------------------------------------------------------- - - if(d->do_ops == CONFIG_ONDEMAND_YES || (d->do_ops == CONFIG_ONDEMAND_ONDEMAND && (reads || writes))) { - d->do_ops = CONFIG_ONDEMAND_YES; - - st = rrdset_find_bytype("disk_ops", disk); - if(!st) { - st = rrdset_create("disk_ops", disk, NULL, family, "disk.ops", "Disk Completed I/O Operations", "operations/s", 2001, update_every, RRDSET_TYPE_LINE); - st->isdetail = 1; - - rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_INCREMENTAL); - rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_INCREMENTAL); - } - else rrdset_next_usec(st, dt); - - last_reads = rrddim_set(st, "reads", reads); - last_writes = rrddim_set(st, "writes", writes); - rrdset_done(st); - } - - // -------------------------------------------------------------------- - - if(d->do_qops == CONFIG_ONDEMAND_YES || (d->do_qops == CONFIG_ONDEMAND_ONDEMAND && queued_ios)) { - d->do_qops = CONFIG_ONDEMAND_YES; - - st = rrdset_find_bytype("disk_qops", disk); - if(!st) { - st = rrdset_create("disk_qops", disk, NULL, family, "disk.qops", "Disk Current I/O Operations", "operations", 2002, update_every, RRDSET_TYPE_LINE); - st->isdetail = 1; - - rrddim_add(st, "operations", NULL, 1, 1, RRDDIM_ABSOLUTE); - } - else rrdset_next_usec(st, dt); - - rrddim_set(st, "operations", queued_ios); - rrdset_done(st); - } - - // -------------------------------------------------------------------- - - if(d->do_backlog == CONFIG_ONDEMAND_YES || (d->do_backlog == CONFIG_ONDEMAND_ONDEMAND && backlog_ms)) { - d->do_backlog = CONFIG_ONDEMAND_YES; - - st = rrdset_find_bytype("disk_backlog", disk); - if(!st) { - st = rrdset_create("disk_backlog", disk, NULL, family, "disk.backlog", "Disk Backlog", "backlog (ms)", 2003, update_every, RRDSET_TYPE_AREA); - st->isdetail = 1; - - rrddim_add(st, "backlog", NULL, 1, 10, RRDDIM_INCREMENTAL); - } - else rrdset_next_usec(st, dt); - - rrddim_set(st, "backlog", backlog_ms); - rrdset_done(st); - } - - // -------------------------------------------------------------------- - - if(d->do_util == CONFIG_ONDEMAND_YES || (d->do_util == CONFIG_ONDEMAND_ONDEMAND && busy_ms)) { - d->do_util = CONFIG_ONDEMAND_YES; - - st = rrdset_find_bytype("disk_util", disk); - if(!st) { - st = rrdset_create("disk_util", disk, NULL, family, "disk.util", "Disk Utilization Time", "% of time working", 2004, update_every, RRDSET_TYPE_AREA); - st->isdetail = 1; - - rrddim_add(st, "utilization", NULL, 1, 10, RRDDIM_INCREMENTAL); - } - else rrdset_next_usec(st, dt); - - last_busy_ms = rrddim_set(st, "utilization", busy_ms); - rrdset_done(st); - } - - // -------------------------------------------------------------------- - - if(d->do_mops == CONFIG_ONDEMAND_YES || (d->do_mops == CONFIG_ONDEMAND_ONDEMAND && (mreads || mwrites))) { - d->do_mops = CONFIG_ONDEMAND_YES; - - st = rrdset_find_bytype("disk_mops", disk); - if(!st) { - st = rrdset_create("disk_mops", disk, NULL, family, "disk.mops", "Disk Merged Operations", "merged operations/s", 2021, update_every, RRDSET_TYPE_LINE); - st->isdetail = 1; - - rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_INCREMENTAL); - rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_INCREMENTAL); - } - else rrdset_next_usec(st, dt); - - rrddim_set(st, "reads", mreads); - rrddim_set(st, "writes", mwrites); - rrdset_done(st); - } - - // -------------------------------------------------------------------- - - if(d->do_iotime == CONFIG_ONDEMAND_YES || (d->do_iotime == CONFIG_ONDEMAND_ONDEMAND && (readms || writems))) { - d->do_iotime = CONFIG_ONDEMAND_YES; - - st = rrdset_find_bytype("disk_iotime", disk); - if(!st) { - st = rrdset_create("disk_iotime", disk, NULL, family, "disk.iotime", "Disk Total I/O Time", "milliseconds/s", 2022, update_every, RRDSET_TYPE_LINE); - st->isdetail = 1; - - rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_INCREMENTAL); - rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_INCREMENTAL); - } - else rrdset_next_usec(st, dt); - - last_readms = rrddim_set(st, "reads", readms); - last_writems = rrddim_set(st, "writes", writems); - rrdset_done(st); - } - - // -------------------------------------------------------------------- - // calculate differential charts - // only if this is not the first time we run - - if(dt) { - if( (d->do_iotime == CONFIG_ONDEMAND_YES || (d->do_iotime == CONFIG_ONDEMAND_ONDEMAND && (readms || writems))) && - (d->do_ops == CONFIG_ONDEMAND_YES || (d->do_ops == CONFIG_ONDEMAND_ONDEMAND && (reads || writes)))) { - st = rrdset_find_bytype("disk_await", disk); - if(!st) { - st = rrdset_create("disk_await", disk, NULL, family, "disk.await", "Average Completed I/O Operation Time", "ms per operation", 2005, update_every, RRDSET_TYPE_LINE); - st->isdetail = 1; - - rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_ABSOLUTE); - rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_ABSOLUTE); - } - else rrdset_next_usec(st, dt); - - rrddim_set(st, "reads", (reads - last_reads) ? (readms - last_readms) / (reads - last_reads) : 0); - rrddim_set(st, "writes", (writes - last_writes) ? (writems - last_writems) / (writes - last_writes) : 0); - rrdset_done(st); - } - - if( (d->do_io == CONFIG_ONDEMAND_YES || (d->do_io == CONFIG_ONDEMAND_ONDEMAND && (readsectors || writesectors))) && - (d->do_ops == CONFIG_ONDEMAND_YES || (d->do_ops == CONFIG_ONDEMAND_ONDEMAND && (reads || writes)))) { - st = rrdset_find_bytype("disk_avgsz", disk); - if(!st) { - st = rrdset_create("disk_avgsz", disk, NULL, family, "disk.avgsz", "Average Completed I/O Operation Bandwidth", "kilobytes per operation", 2006, update_every, RRDSET_TYPE_AREA); - st->isdetail = 1; - - rrddim_add(st, "reads", NULL, d->sector_size, 1024, RRDDIM_ABSOLUTE); - rrddim_add(st, "writes", NULL, d->sector_size * -1, 1024, RRDDIM_ABSOLUTE); - } - else rrdset_next_usec(st, dt); - - rrddim_set(st, "reads", (reads - last_reads) ? (readsectors - last_readsectors) / (reads - last_reads) : 0); - rrddim_set(st, "writes", (writes - last_writes) ? (writesectors - last_writesectors) / (writes - last_writes) : 0); - rrdset_done(st); - } - - if( (d->do_util == CONFIG_ONDEMAND_YES || (d->do_util == CONFIG_ONDEMAND_ONDEMAND && busy_ms)) && - (d->do_ops == CONFIG_ONDEMAND_YES || (d->do_ops == CONFIG_ONDEMAND_ONDEMAND && (reads || writes)))) { - st = rrdset_find_bytype("disk_svctm", disk); - if(!st) { - st = rrdset_create("disk_svctm", disk, NULL, family, "disk.svctm", "Average Service Time", "ms per operation", 2007, update_every, RRDSET_TYPE_LINE); - st->isdetail = 1; - - rrddim_add(st, "svctm", NULL, 1, 1, RRDDIM_ABSOLUTE); - } - else rrdset_next_usec(st, dt); - - rrddim_set(st, "svctm", ((reads - last_reads) + (writes - last_writes)) ? (busy_ms - last_busy_ms) / ((reads - last_reads) + (writes - last_writes)) : 0); - rrdset_done(st); - } - } - - // -------------------------------------------------------------------------- - // space metrics - - if(d->mount_point && (d->do_space || d->do_inodes) ) { - // collect space metrics using statvfs - - if (statvfs(d->mount_point, &buff_statvfs) < 0) - error("Failed statvfs() for '%s' (disk '%s')", d->mount_point, d->disk); - else { - space_avail = buff_statvfs.f_bavail * buff_statvfs.f_bsize; - space_avail_root = (buff_statvfs.f_bfree - buff_statvfs.f_bavail) * buff_statvfs.f_bsize; - space_used = (buff_statvfs.f_blocks - buff_statvfs.f_bfree) * buff_statvfs.f_bsize; - - inodes_avail = buff_statvfs.f_favail; - inodes_avail_root = buff_statvfs.f_ffree - buff_statvfs.f_favail; - inodes_used = buff_statvfs.f_files - buff_statvfs.f_ffree; - - // verify we collected the metrics for the right disk. - // if not the mountpoint has changed. - - if(stat(d->mount_point, &buff_stat) == -1) - error("Failed to stat() for '%s' (disk '%s')", d->mount_point, d->disk); - else { - if(major(buff_stat.st_dev) == major && minor(buff_stat.st_dev) == minor) { - - // -------------------------------------------------------------------------- - - if(d->do_space == CONFIG_ONDEMAND_YES || (d->do_space == CONFIG_ONDEMAND_ONDEMAND && (space_avail || space_avail_root || space_used))) { - st = rrdset_find_bytype("disk_space", disk); - if(!st) { - st = rrdset_create("disk_space", disk, NULL, family, "disk.space", "Disk Space Usage", "GB", 2023, update_every, RRDSET_TYPE_STACKED); - st->isdetail = 1; - - rrddim_add(st, "avail", NULL, 1, 1024*1024*1024, RRDDIM_ABSOLUTE); - rrddim_add(st, "reserved_for_root", "reserved for root", 1, 1024*1024*1024, RRDDIM_ABSOLUTE); - rrddim_add(st, "used" , NULL, 1, 1024*1024*1024, RRDDIM_ABSOLUTE); - } - else rrdset_next_usec(st, dt); - - rrddim_set(st, "avail", space_avail); - rrddim_set(st, "reserved_for_root", space_avail_root); - rrddim_set(st, "used", space_used); - rrdset_done(st); - } - - // -------------------------------------------------------------------------- - - if(d->do_inodes == CONFIG_ONDEMAND_YES || (d->do_inodes == CONFIG_ONDEMAND_ONDEMAND && (inodes_avail || inodes_avail_root || inodes_used))) { - st = rrdset_find_bytype("disk_inodes", disk); - if(!st) { - st = rrdset_create("disk_inodes", disk, NULL, family, "disk.inodes", "Disk Inodes Usage", "Inodes", 2024, update_every, RRDSET_TYPE_STACKED); - st->isdetail = 1; - - rrddim_add(st, "avail", NULL, 1, 1, RRDDIM_ABSOLUTE); - rrddim_add(st, "reserved_for_root", "reserved for root", 1, 1, RRDDIM_ABSOLUTE); - rrddim_add(st, "used" , NULL, 1, 1, RRDDIM_ABSOLUTE); - } - else rrdset_next_usec(st, dt); - - rrddim_set(st, "avail", inodes_avail); - rrddim_set(st, "reserved_for_root", inodes_avail_root); - rrddim_set(st, "used", inodes_used); - rrdset_done(st); - } - } - } - } - } - } - - return 0; +int do_proc_diskstats(int update_every, usec_t dt) { + static procfile *ff = NULL; + 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, + globals_initialized = 0; + + if(unlikely(!globals_initialized)) { + 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); + + globals_initialized = 1; + } + + // -------------------------------------------------------------------------- + + 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; + + 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; + + // -------------------------------------------------------------------------- + // Set its family based on mount point + + char *family = d->mount_point; + if(!family) family = disk; + + + // -------------------------------------------------------------------------- + // Check the configuration for the device + + if(unlikely(!d->configured)) { + d->configured = 1; + + static SIMPLE_PATTERN *excluded_disks = NULL; + + if(unlikely(!excluded_disks)) { + excluded_disks = simple_pattern_create( + config_get(CONFIG_SECTION_DISKSTATS, "exclude disks", DELAULT_EXLUDED_DISKS), + SIMPLE_PATTERN_EXACT + ); + } + + int def_enable = global_enable_new_disks_detected_at_runtime; + + if(def_enable != CONFIG_BOOLEAN_NO && simple_pattern_matches(excluded_disks, disk)) + def_enable = CONFIG_BOOLEAN_NO; + + char var_name[4096 + 1]; + snprintfz(var_name, 4096, "plugin:proc:/proc/diskstats:%s", 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; + } + 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 + + switch(d->type) { + 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_CONTAINER: + 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)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; + + // 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; + } + + 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); + } + } + + // -------------------------------------------------------------------------- + // 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 + , disk + , NULL + , family + , "disk.io" + , "Disk I/O Bandwidth" + , "kilobytes/s" + , 2000 + , update_every + , RRDSET_TYPE_AREA + ); + + rrddim_add(d->st_io, "reads", NULL, d->sector_size, 1024, RRD_ALGORITHM_INCREMENTAL); + 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(d->st_io, "reads", readsectors); + last_writesectors = rrddim_set(d->st_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" + , disk + , NULL + , family + , "disk.ops" + , "Disk Completed I/O Operations" + , "operations/s" + , 2001 + , update_every + , RRDSET_TYPE_LINE + ); + + rrdset_flag_set(d->st_ops, RRDSET_FLAG_DETAIL); + + rrddim_add(d->st_ops, "reads", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + rrddim_add(d->st_ops, "writes", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL); + } + else rrdset_next(d->st_ops); + + last_reads = rrddim_set(d->st_ops, "reads", reads); + last_writes = rrddim_set(d->st_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" + , disk + , NULL + , family + , "disk.qops" + , "Disk Current I/O Operations" + , "operations" + , 2002 + , update_every + , RRDSET_TYPE_LINE + ); + + rrdset_flag_set(d->st_qops, RRDSET_FLAG_DETAIL); + + rrddim_add(d->st_qops, "operations", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + } + else rrdset_next(d->st_qops); + + rrddim_set(d->st_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" + , disk + , NULL + , family + , "disk.backlog" + , "Disk Backlog" + , "backlog (ms)" + , 2003 + , update_every + , RRDSET_TYPE_AREA + ); + + rrdset_flag_set(d->st_backlog, RRDSET_FLAG_DETAIL); + + rrddim_add(d->st_backlog, "backlog", NULL, 1, 10, RRD_ALGORITHM_INCREMENTAL); + } + else rrdset_next(d->st_backlog); + + rrddim_set(d->st_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" + , disk + , NULL + , family + , "disk.util" + , "Disk Utilization Time" + , "% of time working" + , 2004 + , update_every + , RRDSET_TYPE_AREA + ); + + rrdset_flag_set(d->st_util, RRDSET_FLAG_DETAIL); + + rrddim_add(d->st_util, "utilization", NULL, 1, 10, RRD_ALGORITHM_INCREMENTAL); + } + else rrdset_next(d->st_util); + + last_busy_ms = rrddim_set(d->st_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" + , disk + , NULL + , family + , "disk.mops" + , "Disk Merged Operations" + , "merged operations/s" + , 2021 + , update_every + , RRDSET_TYPE_LINE + ); + + rrdset_flag_set(d->st_mops, RRDSET_FLAG_DETAIL); + + rrddim_add(d->st_mops, "reads", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + rrddim_add(d->st_mops, "writes", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL); + } + else rrdset_next(d->st_mops); + + rrddim_set(d->st_mops, "reads", mreads); + rrddim_set(d->st_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" + , disk + , NULL + , family + , "disk.iotime" + , "Disk Total I/O Time" + , "milliseconds/s" + , 2022 + , update_every + , RRDSET_TYPE_LINE + ); + + rrdset_flag_set(d->st_iotime, RRDSET_FLAG_DETAIL); + + rrddim_add(d->st_iotime, "reads", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + rrddim_add(d->st_iotime, "writes", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL); + } + else rrdset_next(d->st_iotime); + + last_readms = rrddim_set(d->st_iotime, "reads", readms); + last_writems = rrddim_set(d->st_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" + , disk + , NULL + , family + , "disk.await" + , "Average Completed I/O Operation Time" + , "ms per operation" + , 2005 + , update_every + , RRDSET_TYPE_LINE + ); + + rrdset_flag_set(d->st_await, RRDSET_FLAG_DETAIL); + + rrddim_add(d->st_await, "reads", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + rrddim_add(d->st_await, "writes", NULL, -1, 1, RRD_ALGORITHM_ABSOLUTE); + } + else rrdset_next(d->st_await); + + rrddim_set(d->st_await, "reads", (reads - last_reads) ? (readms - last_readms) / (reads - last_reads) : 0); + rrddim_set(d->st_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" + , disk + , NULL + , family + , "disk.avgsz" + , "Average Completed I/O Operation Bandwidth" + , "kilobytes per operation" + , 2006 + , update_every + , RRDSET_TYPE_AREA + ); + + rrdset_flag_set(d->st_avgsz, RRDSET_FLAG_DETAIL); + + rrddim_add(d->st_avgsz, "reads", NULL, d->sector_size, 1024, RRD_ALGORITHM_ABSOLUTE); + rrddim_add(d->st_avgsz, "writes", NULL, d->sector_size * -1, 1024, RRD_ALGORITHM_ABSOLUTE); + } + else rrdset_next(d->st_avgsz); + + rrddim_set(d->st_avgsz, "reads", (reads - last_reads) ? (readsectors - last_readsectors) / (reads - last_reads) : 0); + rrddim_set(d->st_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" + , disk + , NULL + , family + , "disk.svctm" + , "Average Service Time" + , "ms per operation" + , 2007 + , update_every + , RRDSET_TYPE_LINE + ); + + rrdset_flag_set(d->st_svctm, RRDSET_FLAG_DETAIL); + + rrddim_add(d->st_svctm, "svctm", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + } + else rrdset_next(d->st_svctm); + + rrddim_set(d->st_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); + } + } + } + + // cleanup removed disks + + struct disk *d = disk_root, *last = NULL; + while(d) { + if(unlikely(!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); + + if(d == disk_root) { + disk_root = d = d->next; + last = NULL; + } + else if(last) { + last->next = d = d->next; + } + + freez(t->disk); + freez(t->mount_point); + freez(t); + } + else { + d->updated = 0; + last = d; + d = d->next; + } + } + + return 0; }