diff options
Diffstat (limited to 'src/proc_diskstats.c')
| -rw-r--r-- | src/proc_diskstats.c | 1258 |
1 files changed, 690 insertions, 568 deletions
diff --git a/src/proc_diskstats.c b/src/proc_diskstats.c index c62a1351..459d5a13 100644 --- a/src/proc_diskstats.c +++ b/src/proc_diskstats.c @@ -1,578 +1,700 @@ -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> - #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" -struct disk { - unsigned long major; - unsigned long minor; - int partition_id; // -1 = this is not a partition - char *family; - struct disk *next; +#define DISK_TYPE_PHYSICAL 1 +#define DISK_TYPE_PARTITION 2 +#define DISK_TYPE_CONTAINER 3 + +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; } *disk_root = NULL; -struct disk *get_disk(unsigned long major, unsigned long minor) { - static char path_find_block_device_partition[FILENAME_MAX + 1] = ""; - static struct mountinfo *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)) - break; - - // if we found it, return it - if(likely(d)) - return d; - - if(unlikely(!path_find_block_device_partition[0])) { - char filename[FILENAME_MAX + 1]; - snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/sys/dev/block/%lu:%lu/partition"); - snprintfz(path_find_block_device_partition, FILENAME_MAX, "%s", config_get("plugin:proc:/proc/diskstats", "path to get block device partition", filename)); - } - - // 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->major = major; - d->minor = minor; - d->partition_id = -1; - 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 if it is a partition - // by reading /sys/dev/block/MAJOR:MINOR/partition - char buffer[FILENAME_MAX + 1]; - snprintfz(buffer, FILENAME_MAX, path_find_block_device_partition, major, minor); - - int fd = open(buffer, O_RDONLY, 0666); - if(likely(fd != -1)) { - // we opened it - int bytes = read(fd, buffer, FILENAME_MAX); - close(fd); - - if(bytes > 0) - d->partition_id = strtoul(buffer, NULL, 10); - } - // if the /partition file does not exist, it is a disk, not a partition - - // ------------------------------------------------------------------------ - // check if we can find its mount point - - // mountinfo_find() can be called with NULL mountinfo_root - struct mountinfo *mi = mountinfo_find(mountinfo_root, d->major, d->minor); - if(unlikely(!mi)) { - // mountinfo_free() can be called with NULL mountinfo_root - mountinfo_free(mountinfo_root); - - // re-read mountinfo in case something changed - mountinfo_root = mountinfo_read(); - - // search again for this disk - mi = mountinfo_find(mountinfo_root, d->major, d->minor); - } - - if(mi) - d->family = strdup(mi->mount_point); - // no need to check for NULL - else - d->family = NULL; - - return d; +static struct mountinfo *disk_mountinfo_root = NULL; + +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 *)mallocz(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(!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 = strdupz(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 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; + + return CONFIG_ONDEMAND_NO; } int do_proc_diskstats(int update_every, unsigned long long dt) { - static procfile *ff = NULL; - static char path_to_get_hw_sector_size[FILENAME_MAX + 1] = ""; - static int enable_new_disks = -1; - static int do_io = -1, do_ops = -1, do_mops = -1, do_iotime = -1, do_qops = -1, do_util = -1, do_backlog = -1; - - if(enable_new_disks == -1) enable_new_disks = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "enable new disks detected at runtime", CONFIG_ONDEMAND_ONDEMAND); - - if(do_io == -1) do_io = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "bandwidth for all disks", CONFIG_ONDEMAND_ONDEMAND); - if(do_ops == -1) do_ops = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "operations for all disks", CONFIG_ONDEMAND_ONDEMAND); - if(do_mops == -1) do_mops = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "merged operations for all disks", CONFIG_ONDEMAND_ONDEMAND); - if(do_iotime == -1) do_iotime = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "i/o time for all disks", CONFIG_ONDEMAND_ONDEMAND); - if(do_qops == -1) do_qops = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "queued operations for all disks", CONFIG_ONDEMAND_ONDEMAND); - if(do_util == -1) do_util = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "utilization percentage for all disks", CONFIG_ONDEMAND_ONDEMAND); - if(do_backlog == -1)do_backlog = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "backlog for all disks", CONFIG_ONDEMAND_ONDEMAND); - - 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; - - if(!path_to_get_hw_sector_size[0]) { - char filename[FILENAME_MAX + 1]; - snprintfz(filename, 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", filename)); - } - - 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++) { - 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; - - 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 - - int def_enabled = 0; - - // remove slashes from disk names - char *s; - for(s = disk; *s ;s++) if(*s == '/') *s = '_'; - - struct disk *d = get_disk(major, minor); - if(d->partition_id == -1) - def_enabled = enable_new_disks; - else - def_enabled = 0; - - char *family = d->family; - if(!family) family = disk; - -/* - switch(major) { - case 9: // MDs - case 43: // network block - case 144: // nfs - case 145: // nfs - case 146: // nfs - case 199: // veritas - case 201: // veritas - case 251: // dm - case 253: // virtio - def_enabled = enable_new_disks; - break; - - case 48: // RAID - case 49: // RAID - case 50: // RAID - case 51: // RAID - case 52: // RAID - case 53: // RAID - case 54: // RAID - case 55: // RAID - case 112: // RAID - case 136: // RAID - case 137: // RAID - case 138: // RAID - case 139: // RAID - case 140: // RAID - case 141: // RAID - case 142: // RAID - case 143: // RAID - case 179: // MMC - case 180: // USB - if(minor % 8) def_enabled = 0; // partitions - else def_enabled = enable_new_disks; - break; - - case 8: // scsi disks - case 65: // scsi disks - case 66: // scsi disks - case 67: // scsi disks - case 68: // scsi disks - case 69: // scsi disks - case 70: // scsi disks - case 71: // scsi disks - case 72: // scsi disks - case 73: // scsi disks - case 74: // scsi disks - case 75: // scsi disks - case 76: // scsi disks - case 77: // scsi disks - case 78: // scsi disks - case 79: // scsi disks - case 80: // i2o - case 81: // i2o - case 82: // i2o - case 83: // i2o - case 84: // i2o - case 85: // i2o - case 86: // i2o - case 87: // i2o - case 101: // hyperdisk - case 102: // compressed - case 104: // scsi - case 105: // scsi - case 106: // scsi - case 107: // scsi - case 108: // scsi - case 109: // scsi - case 110: // scsi - case 111: // scsi - case 114: // bios raid - case 116: // ram board - case 128: // scsi - case 129: // scsi - case 130: // scsi - case 131: // scsi - case 132: // scsi - case 133: // scsi - case 134: // scsi - case 135: // scsi - case 153: // raid - case 202: // xen - case 254: // virtio3 - case 256: // flash - case 257: // flash - case 259: // nvme0n1 issue #119 - if(minor % 16) def_enabled = 0; // partitions - else def_enabled = enable_new_disks; - break; - - case 160: // raid - case 161: // raid - if(minor % 32) def_enabled = 0; // partitions - else def_enabled = enable_new_disks; - break; - - case 3: // ide - case 13: // 8bit ide - case 22: // ide - case 33: // ide - case 34: // ide - case 56: // ide - case 57: // ide - case 88: // ide - case 89: // ide - case 90: // ide - case 91: // ide - if(minor % 64) def_enabled = 0; // partitions - else def_enabled = enable_new_disks; - break; - - case 252: // zram - def_enabled = 0; - break; - - default: - def_enabled = 0; - break; - } -*/ - - int ddo_io = do_io, ddo_ops = do_ops, ddo_mops = do_mops, ddo_iotime = do_iotime, ddo_qops = do_qops, ddo_util = do_util, ddo_backlog = do_backlog; - - // check which charts are enabled for this disk - { - char var_name[4096 + 1]; - snprintfz(var_name, 4096, "plugin:proc:/proc/diskstats:%s", disk); - def_enabled = config_get_boolean_ondemand(var_name, "enabled", def_enabled); - if(def_enabled == CONFIG_ONDEMAND_NO) continue; - if(def_enabled == CONFIG_ONDEMAND_ONDEMAND && !reads && !writes) continue; - - - ddo_io = config_get_boolean_ondemand(var_name, "bandwidth", ddo_io); - ddo_ops = config_get_boolean_ondemand(var_name, "operations", ddo_ops); - ddo_mops = config_get_boolean_ondemand(var_name, "merged operations", ddo_mops); - ddo_iotime = config_get_boolean_ondemand(var_name, "i/o time", ddo_iotime); - ddo_qops = config_get_boolean_ondemand(var_name, "queued operations", ddo_qops); - ddo_util = config_get_boolean_ondemand(var_name, "utilization percentage", ddo_util); - ddo_backlog = config_get_boolean_ondemand(var_name, "backlog", ddo_backlog); - - // by default, do not add charts that do not have values - if(ddo_io == CONFIG_ONDEMAND_ONDEMAND && !reads && !writes) ddo_io = 0; - if(ddo_mops == CONFIG_ONDEMAND_ONDEMAND && mreads == 0 && mwrites == 0) ddo_mops = 0; - if(ddo_iotime == CONFIG_ONDEMAND_ONDEMAND && readms == 0 && writems == 0) ddo_iotime = 0; - if(ddo_util == CONFIG_ONDEMAND_ONDEMAND && busy_ms == 0) ddo_util = 0; - if(ddo_backlog == CONFIG_ONDEMAND_ONDEMAND && backlog_ms == 0) ddo_backlog = 0; - if(ddo_qops == CONFIG_ONDEMAND_ONDEMAND && backlog_ms == 0) ddo_qops = 0; - - // for absolute values, we need to switch the setting to 'yes' - // to allow it refresh from now on - if(ddo_qops == CONFIG_ONDEMAND_ONDEMAND) config_set(var_name, "queued operations", "yes"); - } - - RRDSET *st; - - // -------------------------------------------------------------------- - - int sector_size = 512; - if(ddo_io) { - st = rrdset_find_bytype(RRD_TYPE_DISK, disk); - if(!st) { - char tf[FILENAME_MAX + 1], *t; - char ssfilename[FILENAME_MAX + 1]; - - strncpyz(tf, disk, FILENAME_MAX); - - // replace all / with ! - while((t = strchr(tf, '/'))) *t = '!'; - - snprintfz(ssfilename, FILENAME_MAX, path_to_get_hw_sector_size, tf); - FILE *fpss = fopen(ssfilename, "r"); - if(fpss) { - char ssbuffer[1025]; - char *tmp = fgets(ssbuffer, 1024, fpss); - - if(tmp) { - sector_size = atoi(tmp); - if(sector_size <= 0) { - error("Invalid sector size %d for device %s in %s. Assuming 512.", sector_size, disk, ssfilename); - sector_size = 512; - } - } - else error("Cannot read data for sector size for device %s from %s. Assuming 512.", disk, ssfilename); - - fclose(fpss); - } - else error("Cannot read sector size for device %s from %s. Assuming 512.", disk, ssfilename); - - 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, sector_size, 1024, RRDDIM_INCREMENTAL); - rrddim_add(st, "writes", NULL, 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(ddo_ops) { - 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(ddo_qops) { - 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(ddo_backlog) { - 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(ddo_util) { - 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(ddo_mops) { - 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(ddo_iotime) { - 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(ddo_iotime && ddo_ops) { - 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(ddo_io && ddo_ops) { - 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, sector_size, 1024, RRDDIM_ABSOLUTE); - rrddim_add(st, "writes", NULL, -sector_size, 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(ddo_util && ddo_ops) { - 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); - } - } - } - - return 0; + 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, "used" , NULL, 1, 1024*1024*1024, RRDDIM_ABSOLUTE); + rrddim_add(st, "reserved_for_root", "reserved for root", 1, 1024*1024*1024, RRDDIM_ABSOLUTE); + } + else rrdset_next_usec(st, dt); + + rrddim_set(st, "avail", space_avail); + rrddim_set(st, "used", space_used); + rrddim_set(st, "reserved_for_root", space_avail_root); + 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, "used" , NULL, 1, 1, RRDDIM_ABSOLUTE); + rrddim_add(st, "reserved_for_root", "reserved for root", 1, 1, RRDDIM_ABSOLUTE); + } + else rrdset_next_usec(st, dt); + + rrddim_set(st, "avail", inodes_avail); + rrddim_set(st, "used", inodes_used); + rrddim_set(st, "reserved_for_root", inodes_avail_root); + rrdset_done(st); + } + } + } + } + } + } + + return 0; } |