10 #include <sys/statvfs.h>
11 #include <sys/types.h>
17 #include "appconfig.h"
20 #include "plugin_proc.h"
22 #include "proc_self_mountinfo.h"
24 #define RRD_TYPE_DISK "disk"
26 #define DISK_TYPE_PHYSICAL 1
27 #define DISK_TYPE_PARTITION 2
28 #define DISK_TYPE_CONTAINER 3
38 struct disk *get_disk(unsigned long major, unsigned long minor) {
39 static char path_find_block_device[FILENAME_MAX + 1] = "";
40 static struct mountinfo *mountinfo_root = NULL;
43 // search for it in our RAM list.
44 // this is sequential, but since we just walk through
45 // and the number of disks / partitions in a system
46 // should not be that many, it should be acceptable
47 for(d = disk_root; d ; d = d->next)
48 if(unlikely(d->major == major && d->minor == minor))
51 // if we found it, return it
55 if(unlikely(!path_find_block_device[0])) {
56 char dirname[FILENAME_MAX + 1];
57 snprintfz(dirname, FILENAME_MAX, "%s%s", global_host_prefix, "/sys/dev/block/%lu:%lu/%s");
58 snprintfz(path_find_block_device, FILENAME_MAX, "%s", config_get("plugin:proc:/proc/diskstats", "path to get block device infos", dirname));
62 // create a new disk structure
63 d = (struct disk *)malloc(sizeof(struct disk));
64 if(!d) fatal("Cannot allocate memory for struct disk in proc_diskstats.");
68 d->type = DISK_TYPE_PHYSICAL; // Default type. Changed later if not correct.
71 // append it to the list
76 for(last = disk_root; last->next ;last = last->next);
80 // ------------------------------------------------------------------------
81 // find the type of the device
83 // find if it is a partition
84 // by checking if /sys/dev/block/MAJOR:MINOR/partition is readable.
85 char buffer[FILENAME_MAX + 1];
86 snprintfz(buffer, FILENAME_MAX, path_find_block_device, major, minor, "partition");
87 if(access(buffer, R_OK) == 0) {
88 d->type = DISK_TYPE_PARTITION;
90 // find if it is a container
91 // by checking if /sys/dev/block/MAJOR:MINOR/slaves has entries
92 snprintfz(buffer, FILENAME_MAX, path_find_block_device, major, minor, "slaves/");
93 DIR *dirp = opendir(buffer);
96 while( (dp = readdir(dirp)) ) {
97 // . and .. are also files in empty folders.
98 if(strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..") == 0) {
101 d->type = DISK_TYPE_CONTAINER;
102 // Stop the loop after we found one file.
105 if(closedir(dirp) == -1)
106 error("Unable to close dir %s", buffer);
110 // ------------------------------------------------------------------------
111 // check if we can find its mount point
113 // mountinfo_find() can be called with NULL mountinfo_root
114 struct mountinfo *mi = mountinfo_find(mountinfo_root, d->major, d->minor);
116 // mountinfo_free() can be called with NULL mountinfo_root
117 mountinfo_free(mountinfo_root);
119 // re-read mountinfo in case something changed
120 mountinfo_root = mountinfo_read();
122 // search again for this disk
123 mi = mountinfo_find(mountinfo_root, d->major, d->minor);
127 d->mount_point = strdup(mi->mount_point);
128 // no need to check for NULL
130 d->mount_point = NULL;
135 int do_proc_diskstats(int update_every, unsigned long long dt) {
136 static procfile *ff = NULL;
137 static char path_to_get_hw_sector_size[FILENAME_MAX + 1] = "";
138 static int enable_autodetection;
139 static int enable_physical_disks, enable_virtual_disks, enable_partitions, enable_mountpoints, enable_space_metrics;
140 static int do_io, do_ops, do_mops, do_iotime, do_qops, do_util, do_backlog, do_space, do_inodes;
141 static struct statvfs buff_statvfs;
142 static struct stat buff_stat;
144 enable_autodetection = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "enable new disks detected at runtime", CONFIG_ONDEMAND_ONDEMAND);
146 enable_physical_disks = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "performance metrics for physical disks", CONFIG_ONDEMAND_ONDEMAND);
147 enable_virtual_disks = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "performance metrics for virtual disks", CONFIG_ONDEMAND_NO);
148 enable_partitions = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "performance metrics for partitions", CONFIG_ONDEMAND_NO);
149 enable_mountpoints = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "performance metrics for mounted filesystems", CONFIG_ONDEMAND_NO);
150 enable_space_metrics = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "space metrics for mounted filesystems", CONFIG_ONDEMAND_ONDEMAND);
152 do_io = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "bandwidth for all disks", CONFIG_ONDEMAND_ONDEMAND);
153 do_ops = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "operations for all disks", CONFIG_ONDEMAND_ONDEMAND);
154 do_mops = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "merged operations for all disks", CONFIG_ONDEMAND_ONDEMAND);
155 do_iotime = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "i/o time for all disks", CONFIG_ONDEMAND_ONDEMAND);
156 do_qops = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "queued operations for all disks", CONFIG_ONDEMAND_ONDEMAND);
157 do_util = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "utilization percentage for all disks", CONFIG_ONDEMAND_ONDEMAND);
158 do_backlog = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "backlog for all disks", CONFIG_ONDEMAND_ONDEMAND);
159 do_space = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "space usage for all disks", CONFIG_ONDEMAND_ONDEMAND);
160 do_inodes = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "inodes usage for all disks", CONFIG_ONDEMAND_ONDEMAND);
163 char filename[FILENAME_MAX + 1];
164 snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/diskstats");
165 ff = procfile_open(config_get("plugin:proc:/proc/diskstats", "filename to monitor", filename), " \t", PROCFILE_FLAG_DEFAULT);
169 if(!path_to_get_hw_sector_size[0]) {
170 char filename[FILENAME_MAX + 1];
171 snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/sys/block/%s/queue/hw_sector_size");
172 snprintfz(path_to_get_hw_sector_size, FILENAME_MAX, "%s", config_get("plugin:proc:/proc/diskstats", "path to get h/w sector size", filename));
175 ff = procfile_readall(ff);
176 if(!ff) return 0; // we return 0, so that we will retry to open it next time
178 uint32_t lines = procfile_lines(ff), l;
181 for(l = 0; l < lines ;l++) {
182 // --------------------------------------------------------------------------
185 unsigned long long major = 0, minor = 0,
186 reads = 0, mreads = 0, readsectors = 0, readms = 0,
187 writes = 0, mwrites = 0, writesectors = 0, writems = 0,
188 queued_ios = 0, busy_ms = 0, backlog_ms = 0,
189 space_avail = 0, space_avail_root = 0, space_used = 0,
190 inodes_avail = 0, inodes_avail_root = 0, inodes_used = 0;
192 unsigned long long last_reads = 0, last_readsectors = 0, last_readms = 0,
193 last_writes = 0, last_writesectors = 0, last_writems = 0,
196 words = procfile_linewords(ff, l);
197 if(words < 14) continue;
199 major = strtoull(procfile_lineword(ff, l, 0), NULL, 10);
200 minor = strtoull(procfile_lineword(ff, l, 1), NULL, 10);
201 disk = procfile_lineword(ff, l, 2);
203 // # of reads completed # of writes completed
204 // This is the total number of reads or writes completed successfully.
205 reads = strtoull(procfile_lineword(ff, l, 3), NULL, 10); // rd_ios
206 writes = strtoull(procfile_lineword(ff, l, 7), NULL, 10); // wr_ios
208 // # of reads merged # of writes merged
209 // Reads and writes which are adjacent to each other may be merged for
210 // efficiency. Thus two 4K reads may become one 8K read before it is
211 // ultimately handed to the disk, and so it will be counted (and queued)
212 mreads = strtoull(procfile_lineword(ff, l, 4), NULL, 10); // rd_merges_or_rd_sec
213 mwrites = strtoull(procfile_lineword(ff, l, 8), NULL, 10); // wr_merges
215 // # of sectors read # of sectors written
216 // This is the total number of sectors read or written successfully.
217 readsectors = strtoull(procfile_lineword(ff, l, 5), NULL, 10); // rd_sec_or_wr_ios
218 writesectors = strtoull(procfile_lineword(ff, l, 9), NULL, 10); // wr_sec
220 // # of milliseconds spent reading # of milliseconds spent writing
221 // This is the total number of milliseconds spent by all reads or writes (as
222 // measured from __make_request() to end_that_request_last()).
223 readms = strtoull(procfile_lineword(ff, l, 6), NULL, 10); // rd_ticks_or_wr_sec
224 writems = strtoull(procfile_lineword(ff, l, 10), NULL, 10); // wr_ticks
226 // # of I/Os currently in progress
227 // The only field that should go to zero. Incremented as requests are
228 // given to appropriate struct request_queue and decremented as they finish.
229 queued_ios = strtoull(procfile_lineword(ff, l, 11), NULL, 10); // ios_pgr
231 // # of milliseconds spent doing I/Os
232 // This field increases so long as field queued_ios is nonzero.
233 busy_ms = strtoull(procfile_lineword(ff, l, 12), NULL, 10); // tot_ticks
235 // weighted # of milliseconds spent doing I/Os
236 // This field is incremented at each I/O start, I/O completion, I/O
237 // merge, or read of these stats by the number of I/Os in progress
238 // (field queued_ios) times the number of milliseconds spent doing I/O since the
239 // last update of this field. This can provide an easy measure of both
240 // I/O completion time and the backlog that may be accumulating.
241 backlog_ms = strtoull(procfile_lineword(ff, l, 13), NULL, 10); // rq_ticks
243 // --------------------------------------------------------------------------
244 // remove slashes from disk names
246 for(s = disk; *s ;s++) if(*s == '/') *s = '_';
247 struct disk *d = get_disk(major, minor);
248 // Find mount point and family
249 char *mount_point = d->mount_point;
250 char *family = d->mount_point;
251 if(!family) family = disk;
253 // --------------------------------------------------------------------------
254 // Check if device is enabled by autodetection or config
256 char var_name[4096 + 1];
257 snprintfz(var_name, 4096, "plugin:proc:/proc/diskstats:%s", disk);
259 if(def_enable == -1) def_enable = config_get_boolean_ondemand(var_name, "enable", CONFIG_ONDEMAND_ONDEMAND);
260 if(def_enable == CONFIG_ONDEMAND_NO) continue;
262 int def_performance = CONFIG_ONDEMAND_NO, def_space = CONFIG_ONDEMAND_NO;
263 if(enable_autodetection) {
264 if(enable_physical_disks && (d->type == DISK_TYPE_PHYSICAL)) {
265 def_performance = enable_physical_disks;
266 } else if(enable_virtual_disks && (d->type == DISK_TYPE_CONTAINER)) {
267 def_performance = enable_virtual_disks;
268 } else if(enable_partitions && (d->type == DISK_TYPE_PARTITION)) {
269 def_performance = enable_partitions;
270 } else if(enable_mountpoints && (d->mount_point != NULL)) {
271 def_performance = enable_mountpoints;
274 if(enable_space_metrics && (d->mount_point != NULL)) {
275 def_space = enable_space_metrics;
281 // --------------------------------------------------------------------------
282 // Do performance metrics
283 def_performance = config_get_boolean_ondemand(var_name, "enable performance metrics", def_performance);
284 if( (def_performance == CONFIG_ONDEMAND_YES) || (def_performance == CONFIG_ONDEMAND_ONDEMAND && reads && writes) ) {
285 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;
287 ddo_io = config_get_boolean_ondemand(var_name, "bandwidth", ddo_io);
288 ddo_ops = config_get_boolean_ondemand(var_name, "operations", ddo_ops);
289 ddo_mops = config_get_boolean_ondemand(var_name, "merged operations", ddo_mops);
290 ddo_iotime = config_get_boolean_ondemand(var_name, "i/o time", ddo_iotime);
291 ddo_qops = config_get_boolean_ondemand(var_name, "queued operations", ddo_qops);
292 ddo_util = config_get_boolean_ondemand(var_name, "utilization percentage", ddo_util);
293 ddo_backlog = config_get_boolean_ondemand(var_name, "backlog", ddo_backlog);
295 // by default, do not add charts that do not have values
296 if(ddo_io == CONFIG_ONDEMAND_ONDEMAND && !reads && !writes) ddo_io = 0;
297 if(ddo_mops == CONFIG_ONDEMAND_ONDEMAND && mreads == 0 && mwrites == 0) ddo_mops = 0;
298 if(ddo_iotime == CONFIG_ONDEMAND_ONDEMAND && readms == 0 && writems == 0) ddo_iotime = 0;
299 if(ddo_util == CONFIG_ONDEMAND_ONDEMAND && busy_ms == 0) ddo_util = 0;
300 if(ddo_backlog == CONFIG_ONDEMAND_ONDEMAND && backlog_ms == 0) ddo_backlog = 0;
301 if(ddo_qops == CONFIG_ONDEMAND_ONDEMAND && backlog_ms == 0) ddo_qops = 0;
303 // for absolute values, we need to switch the setting to 'yes'
304 // to allow it refresh from now on
305 if(ddo_qops == CONFIG_ONDEMAND_ONDEMAND) config_set(var_name, "queued operations", "yes");
307 // --------------------------------------------------------------------
308 int sector_size = 512;
310 st = rrdset_find_bytype(RRD_TYPE_DISK, disk);
312 char tf[FILENAME_MAX + 1], *t;
313 char ssfilename[FILENAME_MAX + 1];
315 strncpyz(tf, disk, FILENAME_MAX);
317 // replace all / with !
318 while((t = strchr(tf, '/'))) *t = '!';
320 snprintfz(ssfilename, FILENAME_MAX, path_to_get_hw_sector_size, tf);
321 FILE *fpss = fopen(ssfilename, "r");
324 char *tmp = fgets(ssbuffer, 1024, fpss);
327 sector_size = atoi(tmp);
328 if(sector_size <= 0) {
329 error("Invalid sector size %d for device %s in %s. Assuming 512.", sector_size, disk, ssfilename);
333 else error("Cannot read data for sector size for device %s from %s. Assuming 512.", disk, ssfilename);
337 else error("Cannot read sector size for device %s from %s. Assuming 512.", disk, ssfilename);
339 st = rrdset_create(RRD_TYPE_DISK, disk, NULL, family, "disk.io", "Disk I/O Bandwidth", "kilobytes/s", 2000, update_every, RRDSET_TYPE_AREA);
341 rrddim_add(st, "reads", NULL, sector_size, 1024, RRDDIM_INCREMENTAL);
342 rrddim_add(st, "writes", NULL, sector_size * -1, 1024, RRDDIM_INCREMENTAL);
344 else rrdset_next_usec(st, dt);
346 last_readsectors = rrddim_set(st, "reads", readsectors);
347 last_writesectors = rrddim_set(st, "writes", writesectors);
351 // --------------------------------------------------------------------
353 st = rrdset_find_bytype("disk_ops", disk);
355 st = rrdset_create("disk_ops", disk, NULL, family, "disk.ops", "Disk Completed I/O Operations", "operations/s", 2001, update_every, RRDSET_TYPE_LINE);
358 rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_INCREMENTAL);
359 rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_INCREMENTAL);
361 else rrdset_next_usec(st, dt);
363 last_reads = rrddim_set(st, "reads", reads);
364 last_writes = rrddim_set(st, "writes", writes);
368 // --------------------------------------------------------------------
370 st = rrdset_find_bytype("disk_qops", disk);
372 st = rrdset_create("disk_qops", disk, NULL, family, "disk.qops", "Disk Current I/O Operations", "operations", 2002, update_every, RRDSET_TYPE_LINE);
375 rrddim_add(st, "operations", NULL, 1, 1, RRDDIM_ABSOLUTE);
377 else rrdset_next_usec(st, dt);
379 rrddim_set(st, "operations", queued_ios);
383 // --------------------------------------------------------------------
385 st = rrdset_find_bytype("disk_backlog", disk);
387 st = rrdset_create("disk_backlog", disk, NULL, family, "disk.backlog", "Disk Backlog", "backlog (ms)", 2003, update_every, RRDSET_TYPE_AREA);
390 rrddim_add(st, "backlog", NULL, 1, 10, RRDDIM_INCREMENTAL);
392 else rrdset_next_usec(st, dt);
394 rrddim_set(st, "backlog", backlog_ms);
398 // --------------------------------------------------------------------
400 st = rrdset_find_bytype("disk_util", disk);
402 st = rrdset_create("disk_util", disk, NULL, family, "disk.util", "Disk Utilization Time", "% of time working", 2004, update_every, RRDSET_TYPE_AREA);
405 rrddim_add(st, "utilization", NULL, 1, 10, RRDDIM_INCREMENTAL);
407 else rrdset_next_usec(st, dt);
409 last_busy_ms = rrddim_set(st, "utilization", busy_ms);
413 // --------------------------------------------------------------------
415 st = rrdset_find_bytype("disk_mops", disk);
417 st = rrdset_create("disk_mops", disk, NULL, family, "disk.mops", "Disk Merged Operations", "merged operations/s", 2021, update_every, RRDSET_TYPE_LINE);
420 rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_INCREMENTAL);
421 rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_INCREMENTAL);
423 else rrdset_next_usec(st, dt);
425 rrddim_set(st, "reads", mreads);
426 rrddim_set(st, "writes", mwrites);
430 // --------------------------------------------------------------------
432 st = rrdset_find_bytype("disk_iotime", disk);
434 st = rrdset_create("disk_iotime", disk, NULL, family, "disk.iotime", "Disk Total I/O Time", "milliseconds/s", 2022, update_every, RRDSET_TYPE_LINE);
437 rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_INCREMENTAL);
438 rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_INCREMENTAL);
440 else rrdset_next_usec(st, dt);
442 last_readms = rrddim_set(st, "reads", readms);
443 last_writems = rrddim_set(st, "writes", writems);
447 // --------------------------------------------------------------------
448 // calculate differential charts
449 // only if this is not the first time we run
451 if(ddo_iotime && ddo_ops) {
452 st = rrdset_find_bytype("disk_await", disk);
454 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);
457 rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_ABSOLUTE);
458 rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_ABSOLUTE);
460 else rrdset_next_usec(st, dt);
462 rrddim_set(st, "reads", (reads - last_reads) ? (readms - last_readms) / (reads - last_reads) : 0);
463 rrddim_set(st, "writes", (writes - last_writes) ? (writems - last_writems) / (writes - last_writes) : 0);
467 if(ddo_io && ddo_ops) {
468 st = rrdset_find_bytype("disk_avgsz", disk);
470 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);
473 rrddim_add(st, "reads", NULL, sector_size, 1024, RRDDIM_ABSOLUTE);
474 rrddim_add(st, "writes", NULL, -sector_size, 1024, RRDDIM_ABSOLUTE);
476 else rrdset_next_usec(st, dt);
478 rrddim_set(st, "reads", (reads - last_reads) ? (readsectors - last_readsectors) / (reads - last_reads) : 0);
479 rrddim_set(st, "writes", (writes - last_writes) ? (writesectors - last_writesectors) / (writes - last_writes) : 0);
483 if(ddo_util && ddo_ops) {
484 st = rrdset_find_bytype("disk_svctm", disk);
486 st = rrdset_create("disk_svctm", disk, NULL, family, "disk.svctm", "Average Service Time", "ms per operation", 2007, update_every, RRDSET_TYPE_LINE);
489 rrddim_add(st, "svctm", NULL, 1, 1, RRDDIM_ABSOLUTE);
491 else rrdset_next_usec(st, dt);
493 rrddim_set(st, "svctm", ((reads - last_reads) + (writes - last_writes)) ? (busy_ms - last_busy_ms) / ((reads - last_reads) + (writes - last_writes)) : 0);
499 // --------------------------------------------------------------------------
501 def_space = config_get_boolean_ondemand(var_name, "enable space metrics", def_space);
502 if(def_space != CONFIG_ONDEMAND_NO) {
503 int ddo_space = do_space, ddo_inodes = do_inodes;
505 ddo_space = config_get_boolean_ondemand(var_name, "space", ddo_space);
506 ddo_inodes = config_get_boolean_ondemand(var_name, "inodes", ddo_space);
507 if(mount_point && (ddo_space || ddo_inodes) ) {
508 // collect space metrics using statvfs
509 if (statvfs(mount_point, &buff_statvfs) < 0) {
510 error("Failed checking disk space usage of %s", family);
512 // verify we collected the metrics for the right disk.
513 // if not the mountpoint has changed.
514 if(stat(mount_point, &buff_stat) == -1) {
515 error("Failed to call stat for %s", family);
517 if(major(buff_stat.st_dev) == major && minor(buff_stat.st_dev) == minor)
520 space_avail = buff_statvfs.f_bavail * buff_statvfs.f_bsize;
521 space_avail_root = (buff_statvfs.f_bfree - buff_statvfs.f_bavail) * buff_statvfs.f_bsize;
522 space_used = (buff_statvfs.f_blocks - buff_statvfs.f_bfree) * buff_statvfs.f_bsize;
524 st = rrdset_find_bytype("disk_space", disk);
526 st = rrdset_create("disk_space", disk, NULL, family, "disk.space", "Disk Space Usage", "GB", 2023, update_every, RRDSET_TYPE_STACKED);
529 rrddim_add(st, "avail", NULL, 1, 1000*1000*1000, RRDDIM_ABSOLUTE);
530 rrddim_add(st, "reserved_for_root", "reserved for root", 1, 1000*1000*1000, RRDDIM_ABSOLUTE);
531 rrddim_add(st, "used" , NULL, 1, 1000*1000*1000, RRDDIM_ABSOLUTE);
533 else rrdset_next_usec(st, dt);
535 rrddim_set(st, "avail", space_avail);
536 rrddim_set(st, "reserved_for_root", space_avail_root);
537 rrddim_set(st, "used", space_used);
541 inodes_avail = buff_statvfs.f_favail;
542 inodes_avail_root = buff_statvfs.f_ffree - buff_statvfs.f_favail;
543 inodes_used = buff_statvfs.f_files - buff_statvfs.f_ffree;
545 st = rrdset_find_bytype("disk_inodes", disk);
547 st = rrdset_create("disk_inodes", disk, NULL, family, "disk.inodes", "Disk Inodes Usage", "Inodes", 2024, update_every, RRDSET_TYPE_STACKED);
550 rrddim_add(st, "avail", NULL, 1, 1, RRDDIM_ABSOLUTE);
551 rrddim_add(st, "reserved_for_root", "reserved for root", 1, 1, RRDDIM_ABSOLUTE);
552 rrddim_add(st, "used" , NULL, 1, 1, RRDDIM_ABSOLUTE);
554 else rrdset_next_usec(st, dt);
556 rrddim_set(st, "avail", inodes_avail);
557 rrddim_set(st, "reserved_for_root", inodes_avail_root);
558 rrddim_set(st, "used", inodes_used);