summaryrefslogtreecommitdiffstats
path: root/xlators/mgmt/glusterd/src/glusterd-bitrot.c
blob: 897916ed8608e26cb5f0ac22cc64c32034e6ca9e (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
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
/*
   Copyright (c) 2011-2012 Red Hat, Inc. <http://www.redhat.com>
   This file is part of GlusterFS.

   This file is licensed to you under your choice of the GNU Lesser
   General Public License, version 3 or any later version (LGPLv3 or
   later), or the GNU General Public License, version 2 (GPLv2), in all
   cases as published by the Free Software Foundation.
 */

#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif

#include "common-utils.h"
#include "cli1-xdr.h"
#include "xdr-generic.h"
#include "glusterd.h"
#include "glusterd-op-sm.h"
#include "glusterd-store.h"
#include "glusterd-utils.h"
#include "glusterd-volgen.h"
#include "run.h"
#include "syscall.h"
#include "byte-order.h"
#include "compat-errno.h"
#include "glusterd-scrub-svc.h"
#include "glusterd-messages.h"

#include <sys/wait.h>
#include <dlfcn.h>

const char *gd_bitrot_op_list[GF_BITROT_OPTION_TYPE_MAX] = {
        [GF_BITROT_OPTION_TYPE_NONE]            = "none",
        [GF_BITROT_OPTION_TYPE_ENABLE]          = "enable",
        [GF_BITROT_OPTION_TYPE_DISABLE]         = "disable",
        [GF_BITROT_OPTION_TYPE_SCRUB_THROTTLE]  = "scrub-throttle",
        [GF_BITROT_OPTION_TYPE_SCRUB_FREQ]      = "scrub-frequency",
        [GF_BITROT_OPTION_TYPE_SCRUB]           = "scrub",
        [GF_BITROT_OPTION_TYPE_EXPIRY_TIME]     = "expiry-time",
};

int
__glusterd_handle_bitrot (rpcsvc_request_t *req)
{
        int32_t                         ret = -1;
        gf_cli_req                      cli_req = { {0,} };
        dict_t                         *dict = NULL;
        glusterd_op_t                   cli_op = GD_OP_BITROT;
        char                           *volname = NULL;
        int32_t                         type = 0;
        char                            msg[2048] = {0,};
        xlator_t                       *this = NULL;
        glusterd_conf_t                *conf = NULL;

        GF_ASSERT (req);

        this = THIS;
        GF_ASSERT (this);

        conf = this->private;
        GF_ASSERT (conf);

        ret = xdr_to_generic (req->msg[0], &cli_req, (xdrproc_t)xdr_gf_cli_req);
        if (ret < 0) {
                req->rpc_err = GARBAGE_ARGS;
                goto out;
        }

        if (cli_req.dict.dict_len) {
                /* Unserialize the dictionary */
                dict  = dict_new ();

                ret = dict_unserialize (cli_req.dict.dict_val,
                                        cli_req.dict.dict_len,
                                        &dict);
                if (ret < 0) {
                        gf_msg (this->name, GF_LOG_ERROR, 0,
                                GD_MSG_DICT_UNSERIALIZE_FAIL, "failed to "
                                "unserialize req-buffer to dictionary");
                        snprintf (msg, sizeof (msg), "Unable to decode the "
                                  "command");
                        goto out;
                } else {
                        dict->extra_stdfree = cli_req.dict.dict_val;
                }
        }

        ret = dict_get_str (dict, "volname", &volname);
        if (ret) {
                snprintf (msg, sizeof (msg), "Unable to get volume name");
                gf_msg (this->name, GF_LOG_ERROR, errno,
                        GD_MSG_DICT_GET_FAILED, "Unable to get volume name, "
                        "while handling bitrot command");
                goto out;
        }

        ret = dict_get_int32 (dict, "type", &type);
        if (ret) {
                snprintf (msg, sizeof (msg), "Unable to get type of command");
                gf_msg (this->name, GF_LOG_ERROR, errno,
                        GD_MSG_DICT_GET_FAILED, "Unable to get type of cmd, "
                        "while handling bitrot command");
                goto out;
        }

        if (conf->op_version < GD_OP_VERSION_3_7_0) {
                snprintf (msg, sizeof (msg), "Cannot execute command. The "
                          "cluster is operating at version %d. Bitrot command "
                          "%s is unavailable in this version", conf->op_version,
                          gd_bitrot_op_list[type]);
                ret = -1;
                goto out;
        }

        ret = glusterd_op_begin_synctask (req, GD_OP_BITROT, dict);

out:
        if (ret) {
                if (msg[0] == '\0')
                        snprintf (msg, sizeof (msg), "Bitrot operation failed");
                ret = glusterd_op_send_cli_response (cli_op, ret, 0, req,
                                                     dict, msg);
        }

        return ret;
}

int
glusterd_handle_bitrot (rpcsvc_request_t *req)
{
        return glusterd_big_locked_handler (req, __glusterd_handle_bitrot);
}

static int
glusterd_bitrot_scrub_throttle (glusterd_volinfo_t *volinfo, dict_t *dict,
                                char *key, char **op_errstr)
{
        int32_t        ret                  = -1;
        char           *scrub_throttle      = NULL;
        char           *option              = NULL;
        xlator_t       *this                = NULL;

        this = THIS;
        GF_ASSERT (this);

        ret = dict_get_str (dict, "scrub-throttle-value", &scrub_throttle);
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, errno,
                        GD_MSG_DICT_GET_FAILED, "Unable to fetch scrub-"
                        "throttle value");
                goto out;
        }

        option = gf_strdup (scrub_throttle);
        ret = dict_set_dynstr (volinfo->dict, key, option);
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, errno,
                        GD_MSG_DICT_SET_FAILED, "Failed to set option %s",
                        key);
                goto out;
        }

        ret = glusterd_scrubsvc_reconfigure ();
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, 0,
                        GD_MSG_SCRUBSVC_RECONF_FAIL,
                        "Failed to reconfigure scrub "
                        "services");
                goto out;
        }

out:
        return ret;
}

static int
glusterd_bitrot_scrub_freq (glusterd_volinfo_t *volinfo, dict_t *dict,
                            char *key, char **op_errstr)
{
        int32_t        ret                  = -1;
        char           *scrub_freq          = NULL;
        xlator_t       *this                = NULL;
        char           *option              = NULL;

        this = THIS;
        GF_ASSERT (this);

        ret = dict_get_str (dict, "scrub-frequency-value", &scrub_freq);
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, errno,
                        GD_MSG_DICT_GET_FAILED, "Unable to fetch scrub-"
                        "freq value");
                goto out;
        }

        option = gf_strdup (scrub_freq);
        ret = dict_set_dynstr (volinfo->dict, key, option);
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, errno,
                        GD_MSG_DICT_SET_FAILED, "Failed to set option %s",
                        key);
                goto out;
        }

        ret = glusterd_scrubsvc_reconfigure ();
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, 0,
                        GD_MSG_SCRUBSVC_RECONF_FAIL,
                        "Failed to reconfigure scrub "
                        "services");
                goto out;
        }

out:
        return ret;
}

static int
glusterd_bitrot_scrub (glusterd_volinfo_t *volinfo, dict_t *dict,
                       char *key, char **op_errstr)
{
        int32_t        ret                  = -1;
        char           *scrub_value         = NULL;
        xlator_t       *this                = NULL;
        char           *option              = NULL;

        this = THIS;
        GF_ASSERT (this);

        ret = dict_get_str (dict, "scrub-value", &scrub_value);
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, 0,
                        GD_MSG_DICT_GET_FAILED, "Unable to fetch scrub"
                        "value");
                goto out;
        }

        if (!strcmp (scrub_value, "resume")) {
                option = gf_strdup ("Active");
        } else {
                option = gf_strdup (scrub_value);
        }

        ret = dict_set_dynstr (volinfo->dict, key, option);
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, errno,
                        GD_MSG_DICT_SET_FAILED, "Failed to set option %s",
                        key);
                goto out;
        }

        ret = glusterd_scrubsvc_reconfigure ();
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, 0,
                        GD_MSG_SCRUBSVC_RECONF_FAIL,
                        "Failed to reconfigure scrub "
                        "services");
                goto out;
        }

out:
        return ret;
}

static int
glusterd_bitrot_expiry_time (glusterd_volinfo_t *volinfo, dict_t *dict,
                             char *key, char **op_errstr)
{
        int32_t        ret                  = -1;
        uint32_t       expiry_time          = 0;
        xlator_t       *this                = NULL;
        char           dkey[1024]           = {0,};

        this = THIS;
        GF_ASSERT (this);

        ret = dict_get_uint32 (dict, "expiry-time", &expiry_time);
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, errno,
                        GD_MSG_DICT_GET_FAILED, "Unable to get bitrot expiry"
                        " timer value.");
                goto out;
        }

        snprintf (dkey, sizeof (dkey), "%d", expiry_time);

        ret = dict_set_dynstr_with_alloc (volinfo->dict, key, dkey);
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, errno,
                        GD_MSG_DICT_SET_FAILED, "Failed to set option %s",
                        key);
                goto out;
        }

        ret = glusterd_bitdsvc_reconfigure ();
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, 0,
                        GD_MSG_BITDSVC_RECONF_FAIL,
                        "Failed to reconfigure bitrot"
                         "services");
                goto out;
        }
out:
        return ret;
}

static int
glusterd_bitrot_enable (glusterd_volinfo_t *volinfo, char **op_errstr)
{
        int32_t         ret             = -1;
        xlator_t        *this           = NULL;

        this = THIS;
        GF_ASSERT (this);

        GF_VALIDATE_OR_GOTO (this->name, volinfo, out);
        GF_VALIDATE_OR_GOTO (this->name, op_errstr, out);

        if (glusterd_is_volume_started (volinfo) == 0) {
                *op_errstr = gf_strdup ("Volume is stopped, start volume "
                                        "to enable bitrot.");
                ret = -1;
                goto out;
        }

        ret = glusterd_is_bitrot_enabled (volinfo);
        if (ret) {
                *op_errstr = gf_strdup ("Bitrot is already enabled");
                ret = -1;
                goto out;
        }

        ret = dict_set_dynstr_with_alloc (volinfo->dict, VKEY_FEATURES_BITROT,
                                          "on");
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, errno,
                        GD_MSG_DICT_SET_FAILED, "dict set failed");
                goto out;
        }

        /*Once bitrot is enable scrubber should be in Active state*/
        ret = dict_set_dynstr_with_alloc (volinfo->dict, "features.scrub",
                                          "Active");
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, errno,
                        GD_MSG_DICT_SET_FAILED, "Failed to set option "
                        "features.scrub value");
                goto out;
        }

        ret = 0;
out:
        if (ret && op_errstr && !*op_errstr)
                gf_asprintf (op_errstr, "Enabling bitrot on volume %s has been "
                             "unsuccessful", volinfo->volname);
        return ret;
}

static int
glusterd_bitrot_disable (glusterd_volinfo_t *volinfo, char **op_errstr)
{
        int32_t           ret            = -1;
        xlator_t          *this          = NULL;

        this = THIS;
        GF_VALIDATE_OR_GOTO ("glusterd", this, out);

        GF_VALIDATE_OR_GOTO (this->name, volinfo, out);
        GF_VALIDATE_OR_GOTO (this->name, op_errstr, out);

        ret = dict_set_dynstr_with_alloc (volinfo->dict, VKEY_FEATURES_BITROT,
                                          "off");
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, errno,
                        GD_MSG_DICT_SET_FAILED, "dict set failed");
                goto out;
        }

        /*Once bitrot disabled scrubber should be Inactive state*/
        ret = dict_set_dynstr_with_alloc (volinfo->dict, "features.scrub",
                                          "Inactive");
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, errno,
                        GD_MSG_DICT_SET_FAILED, "Failed to set "
                        "features.scrub value");
                goto out;
        }

        ret = 0;
out:
        if (ret && op_errstr && !*op_errstr)
                gf_asprintf (op_errstr, "Disabling bitrot on volume %s has "
                             "been unsuccessful", volinfo->volname);
        return ret;
}

gf_boolean_t
glusterd_should_i_stop_bitd ()
{
        glusterd_conf_t       *conf       = THIS->private;
        glusterd_volinfo_t    *volinfo    = NULL;
        gf_boolean_t           stopped    = _gf_true;
        glusterd_brickinfo_t  *brickinfo  = NULL;
        xlator_t              *this       = NULL;

        this = THIS;
        GF_ASSERT (this);

        cds_list_for_each_entry (volinfo, &conf->volumes, vol_list) {
                if (!glusterd_is_bitrot_enabled (volinfo))
                        continue;
                else if (volinfo->status != GLUSTERD_STATUS_STARTED)
                        continue;
                else {
                        cds_list_for_each_entry (brickinfo, &volinfo->bricks,
                                                 brick_list) {
                                if (!glusterd_is_local_brick (this, volinfo,
                                                              brickinfo))
                                        continue;
                                stopped = _gf_false;
                                return stopped;
                        }

                        /* Before stoping bitrot/scrubber daemon check
                         * other volume also whether respective volume
                         * host a brick from this node or not.*/
                        continue;
                }
        }

        return stopped;
}

static int
glusterd_manage_bitrot (int opcode)
{
        int              ret   = -1;
        xlator_t         *this = NULL;
        glusterd_conf_t  *priv = NULL;

        this = THIS;
        GF_ASSERT (this);

        priv = this->private;
        GF_ASSERT (priv);

        switch (opcode) {
        case GF_BITROT_OPTION_TYPE_ENABLE:
        case GF_BITROT_OPTION_TYPE_DISABLE:
                ret = priv->bitd_svc.manager (&(priv->bitd_svc),
                                                NULL, PROC_START_NO_WAIT);
                if (ret)
                        break;
                ret = priv->scrub_svc.manager (&(priv->scrub_svc), NULL,
                                               PROC_START_NO_WAIT);
                break;
        default:
                ret = 0;
                break;
        }

        return ret;

}

int
glusterd_op_bitrot (dict_t *dict, char **op_errstr, dict_t *rsp_dict)
{
        glusterd_volinfo_t     *volinfo      = NULL;
        int32_t                 ret          = -1;
        char                   *volname      = NULL;
        int                     type         = -1;
        glusterd_conf_t        *priv         = NULL;
        xlator_t               *this         = NULL;

        GF_ASSERT (dict);
        GF_ASSERT (op_errstr);

        this = THIS;
        GF_ASSERT (this);
        priv = this->private;
        GF_ASSERT (priv);

        ret = dict_get_str (dict, "volname", &volname);
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, errno,
                        GD_MSG_DICT_GET_FAILED, "Unable to get volume name");
                goto out;
        }

        ret = glusterd_volinfo_find (volname, &volinfo);
        if (ret) {
                gf_asprintf (op_errstr, FMTSTR_CHECK_VOL_EXISTS, volname);
                goto out;
        }

        ret = dict_get_int32 (dict, "type", &type);
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, errno,
                        GD_MSG_DICT_GET_FAILED, "Unable to get type from "
                        "dict");
                goto out;
        }

        switch (type) {
        case GF_BITROT_OPTION_TYPE_ENABLE:
                ret = glusterd_bitrot_enable (volinfo, op_errstr);
                if (ret < 0)
                        goto out;
                break;

        case GF_BITROT_OPTION_TYPE_DISABLE:
                ret = glusterd_bitrot_disable (volinfo, op_errstr);
                if (ret < 0)
                        goto out;

                break;

        case GF_BITROT_OPTION_TYPE_SCRUB_THROTTLE:
                ret = glusterd_bitrot_scrub_throttle (volinfo, dict,
                                                      "features.scrub-throttle",
                                                      op_errstr);
                if (ret)
                        goto out;
                break;

        case GF_BITROT_OPTION_TYPE_SCRUB_FREQ:
                ret = glusterd_bitrot_scrub_freq (volinfo, dict,
                                                  "features.scrub-freq",
                                                  op_errstr);
                if (ret)
                        goto out;
                break;

        case GF_BITROT_OPTION_TYPE_SCRUB:
                ret = glusterd_bitrot_scrub (volinfo, dict, "features.scrub",
                                             op_errstr);
                if (ret)
                        goto out;
                break;

        case GF_BITROT_OPTION_TYPE_EXPIRY_TIME:
                ret = glusterd_bitrot_expiry_time (volinfo, dict,
                                                   "features.expiry-time",
                                                   op_errstr);
                if (ret)
                        goto out;
                break;

        default:
                gf_asprintf (op_errstr, "Bitrot command failed. Invalid "
                             "opcode");
                ret = -1;
                goto out;
        }

        ret = glusterd_manage_bitrot (type);
        if (ret)
                goto out;

        ret = glusterd_create_volfiles_and_notify_services (volinfo);
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, 0,
                        GD_MSG_VOLFILE_CREATE_FAIL, "Unable to re-create "
                        "volfiles");
                ret = -1;
                goto out;
        }

        ret = glusterd_store_volinfo (volinfo,
                                      GLUSTERD_VOLINFO_VER_AC_INCREMENT);
        if (ret) {
                gf_msg_debug (this->name, 0, "Failed to store volinfo for "
                        "bitrot");
                goto out;
        }

out:
        return ret;
}

int
glusterd_op_stage_bitrot (dict_t *dict, char **op_errstr, dict_t *rsp_dict)
{
        int                  ret                      = 0;
        char                *volname                  = NULL;
        char                *scrub_cmd                = NULL;
        char                *scrub_cmd_from_dict      = NULL;
        char                 msg[2048]                = {0,};
        int                  type                     = 0;
        xlator_t            *this                     = NULL;
        glusterd_conf_t     *priv                     = NULL;
        glusterd_volinfo_t  *volinfo                  = NULL;

        this = THIS;
        GF_ASSERT (this);
        priv = this->private;
        GF_ASSERT (priv);

        GF_ASSERT (dict);
        GF_ASSERT (op_errstr);

        ret = dict_get_str (dict, "volname", &volname);
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, errno,
                        GD_MSG_DICT_GET_FAILED, "Unable to get volume name");
                goto out;
        }

        ret = glusterd_volinfo_find (volname, &volinfo);
        if (ret) {
                gf_asprintf (op_errstr, FMTSTR_CHECK_VOL_EXISTS, volname);
                goto out;
        }

        if (!glusterd_is_volume_started (volinfo)) {
                *op_errstr = gf_strdup ("Volume is stopped, start volume "
                                        "before executing bit rot command.");
                ret = -1;
                goto out;
        }

        ret = dict_get_int32 (dict, "type", &type);
        if (ret) {
                gf_msg (this->name, GF_LOG_ERROR, errno,
                        GD_MSG_DICT_GET_FAILED, "Unable to get type for "
                        "operation");

                *op_errstr = gf_strdup ("Staging stage failed for bitrot "
                                        "operation.");
                goto out;
        }


        if ((GF_BITROT_OPTION_TYPE_ENABLE != type) &&
            (glusterd_is_bitrot_enabled (volinfo) == 0)) {
                ret = -1;
                gf_asprintf (op_errstr, "Bitrot is not enabled on volume %s",
                             volname);
                goto out;
        }

        if ((GF_BITROT_OPTION_TYPE_SCRUB == type)) {
                ret = dict_get_str (volinfo->dict, "features.scrub",
                                    &scrub_cmd_from_dict);
                if (!ret) {
                        ret = dict_get_str (dict, "scrub-value", &scrub_cmd);
                        if (ret) {
                                gf_msg (this->name, GF_LOG_ERROR, errno,
                                        GD_MSG_DICT_GET_FAILED, "Unable to "
                                        "get scrub-value");
                                *op_errstr = gf_strdup ("Staging failed for "
                                                        "bitrot operation. "
                                                        "Please check log file"
                                                        " for more details.");
                                goto out;
                        }
                        /* If scrubber is resume then value of scrubber will be
                         * "Active" in the dictionary. */
                        if (!strcmp (scrub_cmd_from_dict, scrub_cmd) ||
                            (!strncmp ("Active", scrub_cmd_from_dict,
                                       strlen("Active")) && !strncmp ("resume",
                                       scrub_cmd, strlen("resume")))) {
                                snprintf (msg, sizeof (msg), "Scrub is already"
                                          " %sd for volume %s", scrub_cmd,
                                          volinfo->volname);
                                *op_errstr = gf_strdup (msg);
                                ret = -1;
                                goto out;
                        }
                }
                ret = 0;
        }

 out:
        if (ret && op_errstr && *op_errstr)
                gf_msg (this->name, GF_LOG_ERROR, 0,
                        GD_MSG_OP_STAGE_BITROT_FAIL, "%s", *op_errstr);
        gf_msg_debug (this->name, 0, "Returning %d", ret);

        return ret;
}