summaryrefslogtreecommitdiffstats
path: root/src/collectors/proc.plugin/proc_mdstat.c
blob: 47c4f0d2b01f90542840f7ca910fb1986616c6ad (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
// SPDX-License-Identifier: GPL-3.0-or-later

#include "plugin_proc.h"

#define PLUGIN_PROC_MODULE_MDSTAT_NAME "/proc/mdstat"

struct raid {
    int redundant;
    char *name;
    uint32_t hash;
    char *level;

    RRDDIM *rd_health;
    unsigned long long failed_disks;

    RRDSET *st_disks;
    RRDDIM *rd_down;
    RRDDIM *rd_inuse;
    unsigned long long total_disks;
    unsigned long long inuse_disks;

    RRDSET *st_operation;
    RRDDIM *rd_check;
    RRDDIM *rd_resync;
    RRDDIM *rd_recovery;
    RRDDIM *rd_reshape;
    unsigned long long check;
    unsigned long long resync;
    unsigned long long recovery;
    unsigned long long reshape;

    RRDSET *st_finish;
    RRDDIM *rd_finish_in;
    unsigned long long finish_in;

    RRDSET *st_speed;
    RRDDIM *rd_speed;
    unsigned long long speed;

    char *mismatch_cnt_filename;
    RRDSET *st_mismatch_cnt;
    RRDDIM *rd_mismatch_cnt;
    unsigned long long mismatch_cnt;

    RRDSET *st_nonredundant;
    RRDDIM *rd_nonredundant;
};

struct old_raid {
    int redundant;
    char *name;
    uint32_t hash;
    int found;
};

static inline char *remove_trailing_chars(char *s, char c)
{
    while (*s) {
        if (unlikely(*s == c)) {
            *s = '\0';
        }
        s++;
    }
    return s;
}

static inline void make_chart_obsolete(char *name, const char *id_modifier)
{
    char id[50 + 1];
    RRDSET *st = NULL;

    if (likely(name && id_modifier)) {
        snprintfz(id, sizeof(id) - 1, "mdstat.%s_%s", name, id_modifier);
        st = rrdset_find_active_byname_localhost(id);
        if (likely(st))
            rrdset_is_obsolete___safe_from_collector_thread(st);
    }
}

static void add_labels_to_mdstat(struct raid *raid, RRDSET *st) {
    rrdlabels_add(st->rrdlabels, "device", raid->name, RRDLABEL_SRC_AUTO);
    rrdlabels_add(st->rrdlabels, "raid_level", raid->level, RRDLABEL_SRC_AUTO);
}

int do_proc_mdstat(int update_every, usec_t dt)
{
    (void)dt;
    static procfile *ff = NULL;
    static int do_health = -1, do_nonredundant = -1, do_disks = -1, do_operations = -1, do_mismatch = -1,
               do_mismatch_config = -1;
    static int make_charts_obsolete = -1;
    static const char *mdstat_filename = NULL, *mismatch_cnt_filename = NULL;
    static struct raid *raids = NULL;
    static size_t raids_allocated = 0;
    size_t raids_num = 0, raid_idx = 0, redundant_num = 0;
    static struct old_raid *old_raids = NULL;
    static size_t old_raids_allocated = 0;
    size_t old_raid_idx = 0;

    if (unlikely(do_health == -1)) {
        do_health =
            config_get_boolean("plugin:proc:/proc/mdstat", "faulty devices", CONFIG_BOOLEAN_YES);
        do_nonredundant =
            config_get_boolean("plugin:proc:/proc/mdstat", "nonredundant arrays availability", CONFIG_BOOLEAN_YES);
        do_mismatch_config =
            config_get_boolean_ondemand("plugin:proc:/proc/mdstat", "mismatch count", CONFIG_BOOLEAN_AUTO);
        do_disks =
            config_get_boolean("plugin:proc:/proc/mdstat", "disk stats", CONFIG_BOOLEAN_YES);
        do_operations =
            config_get_boolean("plugin:proc:/proc/mdstat", "operation status", CONFIG_BOOLEAN_YES);

        make_charts_obsolete =
            config_get_boolean("plugin:proc:/proc/mdstat", "make charts obsolete", CONFIG_BOOLEAN_YES);

        char filename[FILENAME_MAX + 1];

        snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/mdstat");
        mdstat_filename = config_get("plugin:proc:/proc/mdstat", "filename to monitor", filename);

        snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/block/%s/md/mismatch_cnt");
        mismatch_cnt_filename = config_get("plugin:proc:/proc/mdstat", "mismatch_cnt filename to monitor", filename);
    }

    if (unlikely(!ff)) {
        ff = procfile_open(mdstat_filename, " \t:", PROCFILE_FLAG_DEFAULT);
        if (unlikely(!ff))
            return 1;
    }

    ff = procfile_readall(ff);
    if (unlikely(!ff))
        return 0; // we return 0, so that we will retry opening it next time

    size_t lines = procfile_lines(ff);
    size_t words = 0;

    if (unlikely(lines < 2)) {
        collector_error("Cannot read /proc/mdstat. Expected 2 or more lines, read %zu.", lines);
        return 1;
    }

    // find how many raids are there
    size_t l;
    raids_num = 0;
    for (l = 1; l < lines - 2; l++) {
        if (unlikely(procfile_lineword(ff, l, 1)[0] == 'a')) // check if the raid is active
            raids_num++;
    }

    if (unlikely(!raids_num && !old_raids_allocated))
        return 0; // we return 0, so that we will retry searching for raids next time

    // allocate the memory we need;
    if (unlikely(raids_num != raids_allocated)) {
        for (raid_idx = 0; raid_idx < raids_allocated; raid_idx++) {
            struct raid *raid = &raids[raid_idx];
            freez(raid->name);
            freez(raid->level);
            freez(raid->mismatch_cnt_filename);
        }
        if (raids_num) {
            raids = (struct raid *)reallocz(raids, raids_num * sizeof(struct raid));
            memset(raids, 0, raids_num * sizeof(struct raid));
        } else {
            freez(raids);
            raids = NULL;
        }
        raids_allocated = raids_num;
    }

    // loop through all lines except the first and the last ones
    for (l = 1, raid_idx = 0; l < (lines - 2) && raid_idx < raids_num; l++) {
        struct raid *raid = &raids[raid_idx];
        raid->redundant = 0;

        words = procfile_linewords(ff, l);

        if (unlikely(words < 3))
            continue;

        if (unlikely(procfile_lineword(ff, l, 1)[0] != 'a'))
            continue;

        if (unlikely(!raid->name)) {
            raid->name = strdupz(procfile_lineword(ff, l, 0));
            raid->hash = simple_hash(raid->name);
            raid->level = strdupz(procfile_lineword(ff, l, 2));
        } else if (unlikely(strcmp(raid->name, procfile_lineword(ff, l, 0)))) {
            freez(raid->name);
            freez(raid->mismatch_cnt_filename);
            freez(raid->level);
            memset(raid, 0, sizeof(struct raid));
            raid->name = strdupz(procfile_lineword(ff, l, 0));
            raid->hash = simple_hash(raid->name);
            raid->level = strdupz(procfile_lineword(ff, l, 2));
        }

        if (unlikely(!raid->name || !raid->name[0]))
            continue;

        raid_idx++;

        // check if raid has disk status
        l++;
        words = procfile_linewords(ff, l);
        if (words < 2 || procfile_lineword(ff, l, words - 1)[0] != '[')
            continue;

        // split inuse and total number of disks
        if (likely(do_health || do_disks)) {
            char *s = NULL, *str_total = NULL, *str_inuse = NULL;

            s = procfile_lineword(ff, l, words - 2);
            if (unlikely(s[0] != '[')) {
                collector_error("Cannot read /proc/mdstat raid health status. Unexpected format: missing opening bracket.");
                continue;
            }
            str_total = ++s;
            while (*s) {
                if (unlikely(*s == '/')) {
                    *s = '\0';
                    str_inuse = s + 1;
                } else if (unlikely(*s == ']')) {
                    *s = '\0';
                    break;
                }
                s++;
            }
            if (unlikely(str_total[0] == '\0' || !str_inuse || str_inuse[0] == '\0')) {
                collector_error("Cannot read /proc/mdstat raid health status. Unexpected format.");
                continue;
            }

            raid->inuse_disks = str2ull(str_inuse, NULL);
            raid->total_disks = str2ull(str_total, NULL);
            raid->failed_disks = raid->total_disks - raid->inuse_disks;
        }

        raid->redundant = 1;
        redundant_num++;
        l++;

        // check if any operation is performed on the raid
        if (likely(do_operations)) {
            char *s = NULL;

            raid->check = 0;
            raid->resync = 0;
            raid->recovery = 0;
            raid->reshape = 0;
            raid->finish_in = 0;
            raid->speed = 0;

            words = procfile_linewords(ff, l);

            if (likely(words < 2))
                continue;

            if (unlikely(procfile_lineword(ff, l, 0)[0] != '['))
                continue;

            if (unlikely(words < 7)) {
                collector_error("Cannot read /proc/mdstat line. Expected 7 params, read %zu.", words);
                continue;
            }

            char *word;
            word = procfile_lineword(ff, l, 3);
            remove_trailing_chars(word, '%');

            unsigned long long percentage = (unsigned long long)(str2ndd(word, NULL) * 100);
            // possible operations: check, resync, recovery, reshape
            // 4-th character is unique for each operation so it is checked
            switch (procfile_lineword(ff, l, 1)[3]) {
                case 'c': // check
                    raid->check = percentage;
                    break;
                case 'y': // resync
                    raid->resync = percentage;
                    break;
                case 'o': // recovery
                    raid->recovery = percentage;
                    break;
                case 'h': // reshape
                    raid->reshape = percentage;
                    break;
            }

            word = procfile_lineword(ff, l, 5);
            s = remove_trailing_chars(word, 'm'); // remove trailing "min"

            word += 7; // skip leading "finish="

            if (likely(s > word))
                raid->finish_in = (unsigned long long)(str2ndd(word, NULL) * 60);

            word = procfile_lineword(ff, l, 6);
            s = remove_trailing_chars(word, 'K'); // remove trailing "K/sec"

            word += 6; // skip leading "speed="

            if (likely(s > word))
                raid->speed = str2ull(word, NULL);
        }
    }

    // read mismatch_cnt files
    if (do_mismatch == -1) {
        if (do_mismatch_config == CONFIG_BOOLEAN_AUTO) {
            if (raids_num > 50)
                do_mismatch = CONFIG_BOOLEAN_NO;
            else
                do_mismatch = CONFIG_BOOLEAN_YES;
        } else
            do_mismatch = do_mismatch_config;
    }

    if (likely(do_mismatch)) {
        for (raid_idx = 0; raid_idx < raids_num; raid_idx++) {
            char filename[FILENAME_MAX + 1];
            struct raid *raid = &raids[raid_idx];

            if (likely(raid->redundant)) {
                if (unlikely(!raid->mismatch_cnt_filename)) {
                    snprintfz(filename, FILENAME_MAX, mismatch_cnt_filename, raid->name);
                    raid->mismatch_cnt_filename = strdupz(filename);
                }
                if (unlikely(read_single_number_file(raid->mismatch_cnt_filename, &raid->mismatch_cnt))) {
                    collector_error("Cannot read file '%s'", raid->mismatch_cnt_filename);
                    do_mismatch = CONFIG_BOOLEAN_NO;
                    collector_error("Monitoring for mismatch count has been disabled");
                    break;
                }
            }
        }
    }

    // check for disappeared raids
    for (old_raid_idx = 0; old_raid_idx < old_raids_allocated; old_raid_idx++) {
        struct old_raid *old_raid = &old_raids[old_raid_idx];
        int found = 0;

        for (raid_idx = 0; raid_idx < raids_num; raid_idx++) {
            struct raid *raid = &raids[raid_idx];

            if (unlikely(
                    raid->hash == old_raid->hash && !strcmp(raid->name, old_raid->name) &&
                    raid->redundant == old_raid->redundant))
                found = 1;
        }

        old_raid->found = found;
    }

    int raid_disappeared = 0;
    for (old_raid_idx = 0; old_raid_idx < old_raids_allocated; old_raid_idx++) {
        struct old_raid *old_raid = &old_raids[old_raid_idx];

        if (unlikely(!old_raid->found)) {
            if (likely(make_charts_obsolete)) {
                make_chart_obsolete(old_raid->name, "disks");
                make_chart_obsolete(old_raid->name, "mismatch");
                make_chart_obsolete(old_raid->name, "operation");
                make_chart_obsolete(old_raid->name, "finish");
                make_chart_obsolete(old_raid->name, "speed");
                make_chart_obsolete(old_raid->name, "availability");
            }
            raid_disappeared = 1;
        }
    }

    // allocate memory for nonredundant arrays
    if (unlikely(raid_disappeared || old_raids_allocated != raids_num)) {
        for (old_raid_idx = 0; old_raid_idx < old_raids_allocated; old_raid_idx++) {
            freez(old_raids[old_raid_idx].name);
        }
        if (likely(raids_num)) {
            old_raids = reallocz(old_raids, sizeof(struct old_raid) * raids_num);
            memset(old_raids, 0, sizeof(struct old_raid) * raids_num);
        } else {
            freez(old_raids);
            old_raids = NULL;
        }
        old_raids_allocated = raids_num;
        for (old_raid_idx = 0; old_raid_idx < old_raids_allocated; old_raid_idx++) {
            struct old_raid *old_raid = &old_raids[old_raid_idx];
            struct raid *raid = &raids[old_raid_idx];

            old_raid->name = strdupz(raid->name);
            old_raid->hash = raid->hash;
            old_raid->redundant = raid->redundant;
        }
    }

    if (likely(do_health && redundant_num)) {
        static RRDSET *st_mdstat_health = NULL;
        if (unlikely(!st_mdstat_health)) {
            st_mdstat_health = rrdset_create_localhost(
                "mdstat",
                "mdstat_health",
                NULL,
                "health",
                "md.health",
                "Faulty Devices In MD",
                "failed disks",
                PLUGIN_PROC_NAME,
                PLUGIN_PROC_MODULE_MDSTAT_NAME,
                NETDATA_CHART_PRIO_MDSTAT_HEALTH,
                update_every,
                RRDSET_TYPE_LINE);

            rrdset_isnot_obsolete___safe_from_collector_thread(st_mdstat_health);
        }

        if (!redundant_num) {
            if (likely(make_charts_obsolete))
                make_chart_obsolete("mdstat", "health");
        } else {
            for (raid_idx = 0; raid_idx < raids_num; raid_idx++) {
                struct raid *raid = &raids[raid_idx];

                if (likely(raid->redundant)) {
                    if (unlikely(!raid->rd_health && !(raid->rd_health = rrddim_find_active(st_mdstat_health, raid->name))))
                        raid->rd_health = rrddim_add(st_mdstat_health, raid->name, NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);

                    rrddim_set_by_pointer(st_mdstat_health, raid->rd_health, raid->failed_disks);
                }
            }

            rrdset_done(st_mdstat_health);
        }
    }

    for (raid_idx = 0; raid_idx < raids_num; raid_idx++) {
        struct raid *raid = &raids[raid_idx];
        char id[50 + 1];
        char family[50 + 1];

        if (likely(raid->redundant)) {
            if (likely(do_disks)) {
                snprintfz(id, sizeof(id) - 1, "%s_disks", raid->name);

                if (unlikely(!raid->st_disks && !(raid->st_disks = rrdset_find_active_byname_localhost(id)))) {
                    snprintfz(family, sizeof(family) - 1, "%s (%s)", raid->name, raid->level);

                    raid->st_disks = rrdset_create_localhost(
                        "mdstat",
                        id,
                        NULL,
                        family,
                        "md.disks",
                        "Disks Stats",
                        "disks",
                        PLUGIN_PROC_NAME,
                        PLUGIN_PROC_MODULE_MDSTAT_NAME,
                        NETDATA_CHART_PRIO_MDSTAT_DISKS + raid_idx * 10,
                        update_every,
                        RRDSET_TYPE_STACKED);

                    rrdset_isnot_obsolete___safe_from_collector_thread(raid->st_disks);

                    add_labels_to_mdstat(raid, raid->st_disks);
                }

                if (unlikely(!raid->rd_inuse && !(raid->rd_inuse = rrddim_find_active(raid->st_disks, "inuse"))))
                    raid->rd_inuse = rrddim_add(raid->st_disks, "inuse", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
                if (unlikely(!raid->rd_down && !(raid->rd_down = rrddim_find_active(raid->st_disks, "down"))))
                    raid->rd_down = rrddim_add(raid->st_disks, "down", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);

                rrddim_set_by_pointer(raid->st_disks, raid->rd_inuse, raid->inuse_disks);
                rrddim_set_by_pointer(raid->st_disks, raid->rd_down, raid->failed_disks);
                rrdset_done(raid->st_disks);
            }

            if (likely(do_mismatch)) {
                snprintfz(id, sizeof(id) - 1, "%s_mismatch", raid->name);

                if (unlikely(!raid->st_mismatch_cnt && !(raid->st_mismatch_cnt = rrdset_find_active_byname_localhost(id)))) {
                    snprintfz(family, sizeof(family) - 1, "%s (%s)", raid->name, raid->level);

                    raid->st_mismatch_cnt = rrdset_create_localhost(
                        "mdstat",
                        id,
                        NULL,
                        family,
                        "md.mismatch_cnt",
                        "Mismatch Count",
                        "unsynchronized blocks",
                        PLUGIN_PROC_NAME,
                        PLUGIN_PROC_MODULE_MDSTAT_NAME,
                        NETDATA_CHART_PRIO_MDSTAT_MISMATCH + raid_idx * 10,
                        update_every,
                        RRDSET_TYPE_LINE);

                    rrdset_isnot_obsolete___safe_from_collector_thread(raid->st_mismatch_cnt);

                    add_labels_to_mdstat(raid, raid->st_mismatch_cnt);
                }

                if (unlikely(!raid->rd_mismatch_cnt && !(raid->rd_mismatch_cnt = rrddim_find_active(raid->st_mismatch_cnt, "count"))))
                    raid->rd_mismatch_cnt = rrddim_add(raid->st_mismatch_cnt, "count", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);

                rrddim_set_by_pointer(raid->st_mismatch_cnt, raid->rd_mismatch_cnt, raid->mismatch_cnt);
                rrdset_done(raid->st_mismatch_cnt);
            }

            if (likely(do_operations)) {
                snprintfz(id, sizeof(id) - 1, "%s_operation", raid->name);

                if (unlikely(!raid->st_operation && !(raid->st_operation = rrdset_find_active_byname_localhost(id)))) {
                    snprintfz(family, sizeof(family) - 1, "%s (%s)", raid->name, raid->level);

                    raid->st_operation = rrdset_create_localhost(
                        "mdstat",
                        id,
                        NULL,
                        family,
                        "md.status",
                        "Current Status",
                        "percent",
                        PLUGIN_PROC_NAME,
                        PLUGIN_PROC_MODULE_MDSTAT_NAME,
                        NETDATA_CHART_PRIO_MDSTAT_OPERATION + raid_idx * 10,
                        update_every,
                        RRDSET_TYPE_LINE);

                    rrdset_isnot_obsolete___safe_from_collector_thread(raid->st_operation);

                    add_labels_to_mdstat(raid, raid->st_operation);
                }

                if(unlikely(!raid->rd_check && !(raid->rd_check = rrddim_find_active(raid->st_operation, "check"))))
                    raid->rd_check = rrddim_add(raid->st_operation, "check", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
                if(unlikely(!raid->rd_resync && !(raid->rd_resync = rrddim_find_active(raid->st_operation, "resync"))))
                    raid->rd_resync = rrddim_add(raid->st_operation, "resync", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
                if(unlikely(!raid->rd_recovery && !(raid->rd_recovery = rrddim_find_active(raid->st_operation, "recovery"))))
                    raid->rd_recovery = rrddim_add(raid->st_operation, "recovery", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
                if(unlikely(!raid->rd_reshape && !(raid->rd_reshape = rrddim_find_active(raid->st_operation, "reshape"))))
                    raid->rd_reshape = rrddim_add(raid->st_operation, "reshape", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);

                rrddim_set_by_pointer(raid->st_operation, raid->rd_check, raid->check);
                rrddim_set_by_pointer(raid->st_operation, raid->rd_resync, raid->resync);
                rrddim_set_by_pointer(raid->st_operation, raid->rd_recovery, raid->recovery);
                rrddim_set_by_pointer(raid->st_operation, raid->rd_reshape, raid->reshape);
                rrdset_done(raid->st_operation);

                snprintfz(id, sizeof(id) - 1, "%s_finish", raid->name);
                if (unlikely(!raid->st_finish && !(raid->st_finish = rrdset_find_active_byname_localhost(id)))) {
                    snprintfz(family, sizeof(family) - 1, "%s (%s)", raid->name, raid->level);

                    raid->st_finish = rrdset_create_localhost(
                        "mdstat",
                        id,
                        NULL,
                        family,
                        "md.expected_time_until_operation_finish",
                        "Approximate Time Until Finish",
                        "seconds",
                        PLUGIN_PROC_NAME,
                        PLUGIN_PROC_MODULE_MDSTAT_NAME,
                        NETDATA_CHART_PRIO_MDSTAT_FINISH + raid_idx * 10,
                        update_every, RRDSET_TYPE_LINE);

                    rrdset_isnot_obsolete___safe_from_collector_thread(raid->st_finish);

                    add_labels_to_mdstat(raid, raid->st_finish);
                }

                if(unlikely(!raid->rd_finish_in && !(raid->rd_finish_in = rrddim_find_active(raid->st_finish, "finish_in"))))
                    raid->rd_finish_in = rrddim_add(raid->st_finish, "finish_in", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);

                rrddim_set_by_pointer(raid->st_finish, raid->rd_finish_in, raid->finish_in);
                rrdset_done(raid->st_finish);

                snprintfz(id, sizeof(id) - 1, "%s_speed", raid->name);
                if (unlikely(!raid->st_speed && !(raid->st_speed = rrdset_find_active_byname_localhost(id)))) {
                    snprintfz(family, sizeof(family) - 1, "%s (%s)", raid->name, raid->level);

                    raid->st_speed = rrdset_create_localhost(
                        "mdstat",
                        id,
                        NULL,
                        family,
                        "md.operation_speed",
                        "Operation Speed",
                        "KiB/s",
                        PLUGIN_PROC_NAME,
                        PLUGIN_PROC_MODULE_MDSTAT_NAME,
                        NETDATA_CHART_PRIO_MDSTAT_SPEED + raid_idx * 10,
                        update_every,
                        RRDSET_TYPE_LINE);

                    rrdset_isnot_obsolete___safe_from_collector_thread(raid->st_speed);

                    add_labels_to_mdstat(raid, raid->st_speed);
                }

                if (unlikely(!raid->rd_speed && !(raid->rd_speed = rrddim_find_active(raid->st_speed, "speed"))))
                    raid->rd_speed = rrddim_add(raid->st_speed, "speed", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);

                rrddim_set_by_pointer(raid->st_speed, raid->rd_speed, raid->speed);
                rrdset_done(raid->st_speed);
            }
        } else {
            if (likely(do_nonredundant)) {
                snprintfz(id, sizeof(id) - 1, "%s_availability", raid->name);

                if (unlikely(!raid->st_nonredundant && !(raid->st_nonredundant = rrdset_find_active_localhost(id)))) {
                    snprintfz(family, sizeof(family) - 1, "%s (%s)", raid->name, raid->level);

                    raid->st_nonredundant = rrdset_create_localhost(
                        "mdstat",
                        id,
                        NULL,
                        family,
                        "md.nonredundant",
                        "Nonredundant Array Availability",
                        "boolean",
                        PLUGIN_PROC_NAME,
                        PLUGIN_PROC_MODULE_MDSTAT_NAME,
                        NETDATA_CHART_PRIO_MDSTAT_NONREDUNDANT + raid_idx * 10,
                        update_every,
                        RRDSET_TYPE_LINE);

                    rrdset_isnot_obsolete___safe_from_collector_thread(raid->st_nonredundant);

                    add_labels_to_mdstat(raid, raid->st_nonredundant);
                }

                if (unlikely(!raid->rd_nonredundant && !(raid->rd_nonredundant = rrddim_find_active(raid->st_nonredundant, "available"))))
                    raid->rd_nonredundant = rrddim_add(raid->st_nonredundant, "available", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);

                rrddim_set_by_pointer(raid->st_nonredundant, raid->rd_nonredundant, 1);
                rrdset_done(raid->st_nonredundant);
            }
        }
    }

    return 0;
}