summaryrefslogtreecommitdiffstats
path: root/heal/src/glfs-heal.c
blob: 2f120c9bd3de6dd23ef5e60d406227ef522e47c6 (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
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
/*
 Copyright (c) 2014 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.
*/

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include "glfs.h"
#include "glfs-handles.h"
#include "glfs-internal.h"
#include "protocol-common.h"
#include "syncop.h"
#include "syncop-utils.h"
#include <string.h>
#include <time.h>
#include "glusterfs.h"

#define DEFAULT_HEAL_LOG_FILE_DIRECTORY DATADIR "/log/glusterfs"
#define USAGE_STR "Usage: %s <VOLNAME> [bigger-file <FILE> | "\
                  "source-brick <HOSTNAME:BRICKNAME> [<FILE>] | "\
                  "split-brain-info]\n"

typedef void    (*print_status) (dict_t *, char *, uuid_t, uint64_t *);

int glfsh_heal_splitbrain_file (glfs_t *fs, xlator_t *top_subvol,
                                loc_t *rootloc, char *file, dict_t *xattr_req);

int
glfsh_link_inode_update_loc (loc_t *loc, struct iatt *iattr)
{
        inode_t       *link_inode = NULL;
        int           ret = -1;

        link_inode = inode_link (loc->inode, NULL, NULL, iattr);
        if (link_inode == NULL)
                goto out;

        inode_unref (loc->inode);
        loc->inode = link_inode;
        ret = 0;
out:
        return ret;
}


int
glfsh_get_index_dir_loc (loc_t *rootloc, xlator_t *xl, loc_t *dirloc,
                         int32_t *op_errno)
{
        void      *index_gfid = NULL;
        int       ret = 0;
        dict_t    *xattr = NULL;
        struct iatt   iattr = {0};
        struct iatt   parent = {0};

        ret = syncop_getxattr (xl, rootloc, &xattr, GF_XATTROP_INDEX_GFID,
                               NULL, NULL);
        if (ret < 0) {
                *op_errno = -ret;
                goto out;
        }

        ret = dict_get_ptr (xattr, GF_XATTROP_INDEX_GFID, &index_gfid);
        if (ret < 0) {
                *op_errno = EINVAL;
                goto out;
        }

        gf_uuid_copy (dirloc->gfid, index_gfid);
        dirloc->path = "";
        dirloc->inode = inode_new (rootloc->inode->table);
        ret = syncop_lookup (xl, dirloc, &iattr, &parent, NULL, NULL);
        dirloc->path = NULL;
        if (ret < 0) {
                *op_errno = -ret;
                goto out;
        }
        ret = glfsh_link_inode_update_loc (dirloc, &iattr);
        if (ret)
                goto out;
        glfs_loc_touchup (dirloc);

        ret = 0;
out:
        if (xattr)
                dict_unref (xattr);
        return ret;
}

static xlator_t*
_get_ancestor (xlator_t *xl, gf_xl_afr_op_t heal_op)
{
        static char *replica_xl[] = {"cluster/replicate", NULL};
        static char *heal_xls[] = {"cluster/replicate", "cluster/disperse",
                                         NULL};
        char **ancestors = NULL;

        if (heal_op == GF_SHD_OP_INDEX_SUMMARY)
                ancestors = heal_xls;
        else
                ancestors = replica_xl;

        if (!xl || !xl->parents)
                return NULL;

        while (xl->parents) {
                xl = xl->parents->xlator;
                if (!xl)
                        break;
                if (gf_get_index_by_elem (ancestors, xl->type) != -1)
                        return xl;
        }

        return NULL;
}

int
glfsh_index_purge (xlator_t *subvol, inode_t *inode, char *name)
{
        loc_t loc = {0, };
        int ret = 0;

        loc.parent = inode_ref (inode);
        loc.name = name;

        ret = syncop_unlink (subvol, &loc, NULL, NULL);

        loc_wipe (&loc);
        return ret;
}

void
glfsh_print_spb_status (dict_t *dict, char *path, uuid_t gfid,
                        uint64_t *num_entries)
{
       char *value  = NULL;
       int   ret    = 0;

       ret = dict_get_str (dict, "heal-info", &value);
       if (ret)
               return;

       if (!strcmp (value, "split-brain")) {
                (*num_entries)++;
                printf ("%s\n",
                        path ? path : uuid_utoa (gfid));
       }
       return;
}

void
glfsh_print_heal_status (dict_t *dict, char *path, uuid_t gfid,
                         uint64_t *num_entries)
{
       char *value  = NULL;
       int   ret    = 0;
       char *status = NULL;

       ret = dict_get_str (dict, "heal-info", &value);
       if (ret || (!strcmp (value, "no-heal")))
               return;

       (*num_entries)++;
       if (!strcmp (value, "heal")) {
               ret = gf_asprintf (&status, " ");
       } else if (!strcmp (value, "possibly-healing")) {
               ret = gf_asprintf (&status, " - Possibly undergoing heal\n");
       } else if (!strcmp (value, "split-brain")) {
               ret = gf_asprintf (&status, " - Is in split-brain\n");
       }
       if (ret == -1)
               status = NULL;

       printf ("%s%s\n",
               path ? path : uuid_utoa (gfid),
               status);

       if (status)
               GF_FREE (status);
       return;
}

static int
glfsh_heal_entries (glfs_t *fs, xlator_t *top_subvol, loc_t *rootloc,
                    gf_dirent_t *entries,  uint64_t *offset,
                    uint64_t *num_entries, dict_t *xattr_req) {

        gf_dirent_t      *entry          = NULL;
        gf_dirent_t      *tmp            = NULL;
        int               ret            = 0;
        char              file[64]      = {0};

        list_for_each_entry_safe (entry, tmp, &entries->list, list) {
                *offset = entry->d_off;
                if ((strcmp (entry->d_name, ".") == 0) ||
                    (strcmp (entry->d_name, "..") == 0))
                        continue;
                memset (file, 0, sizeof(file));
                snprintf (file, sizeof(file), "gfid:%s", entry->d_name);
                ret = glfsh_heal_splitbrain_file (fs, top_subvol, rootloc, file,
                                                 xattr_req);
                if (ret)
                        continue;
                (*num_entries)++;
        }

        return ret;
}

static int
glfsh_process_entries (xlator_t *xl, fd_t *fd, gf_dirent_t *entries,
                       uint64_t *offset, uint64_t *num_entries,
                       print_status glfsh_print_status)
{
        gf_dirent_t      *entry = NULL;
        gf_dirent_t      *tmp = NULL;
        int              ret = 0;
        char            *path = NULL;
        uuid_t          gfid = {0};
        xlator_t        *this = NULL;
        dict_t          *dict = NULL;
        loc_t           loc   = {0,};
        this = THIS;

        list_for_each_entry_safe (entry, tmp, &entries->list, list) {
                *offset = entry->d_off;
                if ((strcmp (entry->d_name, ".") == 0) ||
                    (strcmp (entry->d_name, "..") == 0))
                        continue;

                if (dict) {
                        dict_unref (dict);
                        dict = NULL;
                }
                gf_uuid_clear (gfid);
                GF_FREE (path);
                path = NULL;

                gf_uuid_parse (entry->d_name, gfid);
                gf_uuid_copy (loc.gfid, gfid);
                ret = syncop_getxattr (this, &loc, &dict, GF_HEAL_INFO, NULL,
                                       NULL);
                if (ret)
                        continue;

                ret = syncop_gfid_to_path (this->itable, xl, gfid, &path);

                if (ret == -ENOENT || ret == -ESTALE) {
                        glfsh_index_purge (xl, fd->inode, entry->d_name);
                        ret = 0;
                        continue;
                }
                if (dict)
                        glfsh_print_status (dict, path, gfid,
                                            num_entries);
        }
        ret = 0;
        GF_FREE (path);
        if (dict) {
                dict_unref (dict);
                dict = NULL;
        }
        return ret;
}

static int
glfsh_crawl_directory (glfs_t *fs, xlator_t *top_subvol, loc_t *rootloc,
                       xlator_t *readdir_xl, fd_t *fd, loc_t *loc,
                       dict_t *xattr_req)
{
        uint64_t        offset = 0;
        gf_dirent_t     entries;
        int             ret = 0;
        gf_boolean_t    free_entries = _gf_false;
        uint64_t        num_entries = 0;
        int             heal_op = -1;

        INIT_LIST_HEAD (&entries.list);
        ret = dict_get_int32 (xattr_req, "heal-op", &heal_op);
        if (ret)
                return ret;

        while (1) {
                ret = syncop_readdir (readdir_xl, fd, 131072, offset, &entries,
                                      NULL, NULL);
                if (ret <= 0)
                        break;
                ret = 0;
                free_entries = _gf_true;

                if (list_empty (&entries.list))
                        goto out;

                if (heal_op == GF_SHD_OP_INDEX_SUMMARY) {
                        ret = glfsh_process_entries (readdir_xl, fd,
                                                     &entries, &offset,
                                                     &num_entries,
                                                     glfsh_print_heal_status);
                        if (ret < 0)
                                goto out;
                } else if (heal_op == GF_SHD_OP_SPLIT_BRAIN_FILES) {
                        ret = glfsh_process_entries (readdir_xl, fd,
                                                     &entries, &offset,
                                                     &num_entries,
                                                     glfsh_print_spb_status);
                        if (ret < 0)
                                goto out;
                } else if (heal_op == GF_SHD_OP_SBRAIN_HEAL_FROM_BRICK) {
                        ret = glfsh_heal_entries (fs, top_subvol, rootloc,
                                                  &entries, &offset,
                                                  &num_entries, xattr_req);
                }
                gf_dirent_free (&entries);
                free_entries = _gf_false;
        }
        ret = 0;
out:
        if (free_entries)
                gf_dirent_free (&entries);
        if (ret < 0) {
                printf ("Failed to complete gathering info. "
                         "Number of entries so far: %"PRIu64"\n", num_entries);
        } else {
                if (heal_op == GF_SHD_OP_INDEX_SUMMARY)
                        printf ("Number of entries: %"PRIu64"\n", num_entries);
                else if (heal_op == GF_SHD_OP_SPLIT_BRAIN_FILES)
                        printf ("Number of entries in split-brain: %"PRIu64"\n"
                                , num_entries);
                else if (heal_op == GF_SHD_OP_SBRAIN_HEAL_FROM_BRICK)
                        printf ("Number of healed entries: %"PRIu64"\n",
                                num_entries);
        }
        return ret;
}

static int
glfsh_print_brick_from_xl (xlator_t *xl)
{
        char    *remote_host = NULL;
        char    *remote_subvol = NULL;
        int     ret = 0;

        ret = dict_get_str (xl->options, "remote-host", &remote_host);
        if (ret < 0)
                goto out;

        ret = dict_get_str (xl->options, "remote-subvolume", &remote_subvol);
        if (ret < 0)
                goto out;
out:
        if (ret < 0)
                printf ("Brick - Not able to get brick information\n");
        else
                printf ("Brick %s:%s\n", remote_host, remote_subvol);
        return ret;
}

void
glfsh_print_pending_heals (glfs_t *fs, xlator_t *top_subvol, loc_t *rootloc,
                           xlator_t *xl, gf_xl_afr_op_t heal_op)
{
        int ret = 0;
        loc_t   dirloc = {0};
        fd_t    *fd = NULL;
        int32_t op_errno = 0;
        dict_t *xattr_req = NULL;

        xattr_req = dict_new();
        if (!xattr_req)
                goto out;

        ret = dict_set_int32 (xattr_req, "heal-op", heal_op);
        if (ret)
                goto out;
        ret = glfsh_print_brick_from_xl (xl);
        if (ret < 0)
                goto out;

        ret = glfsh_get_index_dir_loc (rootloc, xl, &dirloc, &op_errno);
        if (ret < 0) {
                if (op_errno == ESTALE || op_errno == ENOENT)
                        printf ("Number of entries: 0\n");
                else
                        printf ("Status: %s\n", strerror (op_errno));
                goto out;
        }

        ret = syncop_dirfd (xl, &dirloc, &fd, GF_CLIENT_PID_GLFS_HEAL);
        if (ret)
                goto out;

        ret = glfsh_crawl_directory (fs, top_subvol, rootloc, xl, fd, &dirloc,
                                     xattr_req);
        if (fd)
                fd_unref (fd);
        if (xattr_req)
                dict_unref (xattr_req);
        if (ret < 0) {
                if (heal_op == GF_SHD_OP_INDEX_SUMMARY)
                        printf ("Failed to find entries with pending"
                                " self-heal\n");
                if (heal_op == GF_SHD_OP_SPLIT_BRAIN_FILES)
                        printf ("Failed to find entries in split-brain\n");
        }
out:
        loc_wipe (&dirloc);
        return;
}

static int
glfsh_validate_volume (xlator_t *xl, gf_xl_afr_op_t heal_op)
{
        xlator_t        *heal_xl = NULL;
        int             ret = -1;

        while (xl->next)
                xl = xl->next;

        while (xl) {
                if (strcmp (xl->type, "protocol/client") == 0) {
                        heal_xl = _get_ancestor (xl, heal_op);
                        if (heal_xl) {
                                ret = 0;
                                break;
                        }
                }

                xl = xl->prev;
        }

        return ret;
}

static xlator_t*
_brick_path_to_client_xlator (xlator_t *top_subvol, char *hostname,
                              char *brickpath)
{
        int ret             = 0;
        xlator_t *xl        = NULL;
        char *remote_host   = NULL;
        char *remote_subvol = NULL;

        xl = top_subvol;

        while (xl->next)
                xl = xl->next;

        while (xl) {
                if (!strcmp (xl->type, "protocol/client")) {
                        ret = dict_get_str (xl->options, "remote-host",
                                                    &remote_host);
                        if (ret < 0)
                                goto out;
                        ret = dict_get_str (xl->options,
                                            "remote-subvolume", &remote_subvol);
                        if (ret < 0)
                                goto out;
                        if (!strcmp (hostname, remote_host) &&
                            !strcmp (brickpath, remote_subvol))
                                return xl;
                }
                xl = xl->prev;
        }

out:
        return NULL;
}


int
glfsh_gather_heal_info (glfs_t *fs, xlator_t *top_subvol, loc_t *rootloc,
                        gf_xl_afr_op_t heal_op)
{
        xlator_t  *xl       = NULL;
        xlator_t  *heal_xl   = NULL;
        xlator_t  *old_THIS = NULL;

        xl = top_subvol;
        while (xl->next)
                xl = xl->next;
        while (xl) {
                if (strcmp (xl->type, "protocol/client") == 0) {
                        heal_xl = _get_ancestor (xl, heal_op);
                        if (heal_xl) {
                                old_THIS = THIS;
                                THIS = heal_xl;
                                glfsh_print_pending_heals (fs, top_subvol,
                                                           rootloc, xl,
                                                           heal_op);
                                THIS = old_THIS;
                                printf ("\n");
                        }
                }

                xl = xl->prev;
        }

        return 0;
}

int
_validate_directory (dict_t *xattr_req, char *file)
{
        int heal_op = -1;
        int ret = 0;

        ret = dict_get_int32 (xattr_req, "heal-op", &heal_op);
        if (ret)
                return ret;

        if (heal_op == GF_SHD_OP_SBRAIN_HEAL_FROM_BIGGER_FILE) {
                printf ("'bigger-file' not a valid option for directories.\n");
                ret = -1;
        } else if (heal_op == GF_SHD_OP_SBRAIN_HEAL_FROM_BRICK) {
                printf ("'source-brick' option used on a directory (%s). "
                        "Performing conservative merge.\n", file);
        }

        return ret;
}

int
glfsh_heal_splitbrain_file (glfs_t *fs, xlator_t *top_subvol, loc_t *rootloc,
                           char *file, dict_t *xattr_req)
{
        int          ret        = -1;
        int          reval      = 0;
        loc_t        loc        = {0, };
        char        *path       = NULL;
        char        *filename   = NULL;
        struct iatt  iatt       = {0, };
        xlator_t    *xl         = top_subvol;
        dict_t      *xattr_rsp  = NULL;
        char        *sh_fail_msg = NULL;
        int32_t      op_errno   = 0;

        if (!strncmp (file, "gfid:", 5)) {
                filename = gf_strdup(file);
                path = strtok (filename, ":");
                path = strtok (NULL, ";");
                gf_uuid_parse (path, loc.gfid);
                loc.path = gf_strdup (uuid_utoa (loc.gfid));
                loc.inode = inode_new (rootloc->inode->table);
                ret = syncop_lookup (xl, &loc, &iatt, 0, xattr_req, &xattr_rsp);
                if (ret) {
                        op_errno = -ret;
                        printf ("Lookup failed on %s:%s.\n", file,
                                strerror(op_errno));
                        goto out;
                }
        } else {
                if (file[0] != '/') {
                        printf ("<FILE> must be absolute path w.r.t. the "
                                "volume, starting with '/'\n");
                        ret = -1;
                        goto out;
                }
retry:
                ret = glfs_resolve (fs, xl, file, &loc, &iatt, reval);
                ESTALE_RETRY (ret, errno, reval, &loc, retry);
                if (ret) {
                        printf("Lookup failed on %s:%s\n",
                               file, strerror (errno));
                        goto out;
                }
        }

        if (iatt.ia_type == IA_IFDIR) {
                ret = _validate_directory (xattr_req, file);
                if (ret)
                        goto out;
        }
        ret = syncop_getxattr (xl, &loc, &xattr_rsp, GF_AFR_HEAL_SBRAIN,
                               xattr_req, NULL);
        if (ret) {
                op_errno = -ret;
                printf ("Healing %s failed:%s.\n", file, strerror(op_errno));
                goto out;
        }
        ret = dict_get_str (xattr_rsp, "sh-fail-msg", &sh_fail_msg);
        if (!ret) {
                printf ("Healing %s failed: %s.\n", file, sh_fail_msg);
                ret = -1;
                goto out;
        }
        printf ("Healed %s.\n", file);
        ret = 0;
out:
        if (xattr_rsp)
                dict_unref (xattr_rsp);
        return ret;
}

int
glfsh_heal_from_brick (glfs_t *fs, xlator_t *top_subvol, loc_t *rootloc,
                      char *hostname, char *brickpath, char *file)
{
        int       ret       = -1;
        dict_t   *xattr_req = NULL;
        xlator_t *client    = NULL;
        fd_t     *fd        = NULL;
        loc_t     dirloc    = {0};
        int32_t   op_errno  = 0;

        xattr_req = dict_new();
        if (!xattr_req)
                goto out;
        ret = dict_set_int32 (xattr_req, "heal-op",
                              GF_SHD_OP_SBRAIN_HEAL_FROM_BRICK);
        if (ret)
                goto out;
        client = _brick_path_to_client_xlator (top_subvol, hostname, brickpath);
        if (!client) {
                printf("\"%s:%s\"- No such brick available in the volume.\n",
                       hostname, brickpath);
                ret = -1;
                goto out;
        }
        ret = dict_set_str (xattr_req, "child-name", client->name);
        if (ret)
                goto out;
        if (file)
                ret = glfsh_heal_splitbrain_file (fs, top_subvol, rootloc, file,
                                                 xattr_req);
        else {
                ret = glfsh_get_index_dir_loc (rootloc, client, &dirloc,
                                               &op_errno);
                ret = syncop_dirfd (client, &dirloc, &fd,
                                    GF_CLIENT_PID_GLFS_HEAL);
                if (ret)
                        goto out;
                ret = glfsh_crawl_directory (fs, top_subvol, rootloc, client,
                                             fd, &dirloc, xattr_req);
                if (fd)
                        fd_unref (fd);
        }
out:
        if (xattr_req)
                dict_unref (xattr_req);
        loc_wipe (&dirloc);
        return ret;
}

int
glfsh_heal_from_bigger_file (glfs_t *fs, xlator_t *top_subvol, loc_t *rootloc,
                            char *file)
{

        int ret = -1;
        dict_t *xattr_req = NULL;

        xattr_req = dict_new();
        if (!xattr_req)
                goto out;
        ret = dict_set_int32 (xattr_req, "heal-op",
                              GF_SHD_OP_SBRAIN_HEAL_FROM_BIGGER_FILE);
        if (ret)
                goto out;
        ret = glfsh_heal_splitbrain_file (fs, top_subvol, rootloc, file,
                                         xattr_req);
out:
        if (xattr_req)
                dict_unref (xattr_req);
        return ret;
}

static void
cleanup (glfs_t *fs)
{
        if (!fs)
                return;
#if 0
        /* glfs fini path is still racy and crashing the program. Since
         * this program any way has to die, we are not gonna call fini
         * in the released versions. i.e. final builds. For all
         * internal testing lets enable this so that glfs_fini code
         * path becomes stable. */
        glfs_fini (fs);
#endif
}

int
main (int argc, char **argv)
{
        glfs_t    *fs = NULL;
        int        ret = 0;
        char      *volname = NULL;
        xlator_t  *top_subvol = NULL;
        loc_t     rootloc = {0};
        char      logfilepath[PATH_MAX] = {0};
        char      *hostname = NULL;
        char      *path = NULL;
        char      *file = NULL;
        gf_xl_afr_op_t heal_op = -1;

        if (argc < 2) {
                printf (USAGE_STR, argv[0]);
                ret = -1;
                goto out;
        }
        volname = argv[1];
        switch (argc) {
        case 2:
                heal_op = GF_SHD_OP_INDEX_SUMMARY;
                break;
        case 3:
                if (!strcmp (argv[2], "split-brain-info")) {
                        heal_op = GF_SHD_OP_SPLIT_BRAIN_FILES;
                } else {
                        printf (USAGE_STR, argv[0]);
                        ret = -1;
                        goto out;
                }
                break;
        case 4:
                if (!strcmp (argv[2], "bigger-file")) {
                        heal_op = GF_SHD_OP_SBRAIN_HEAL_FROM_BIGGER_FILE;
                        file = argv[3];
                } else if (!strcmp (argv[2], "source-brick")) {
                        heal_op = GF_SHD_OP_SBRAIN_HEAL_FROM_BRICK;
                        hostname = strtok (argv[3], ":");
                        path = strtok (NULL, ":");
                } else {
                        printf (USAGE_STR, argv[0]);
                        ret = -1;
                        goto out;
                }
                break;
        case 5:
                if (!strcmp (argv[2], "source-brick")) {
                        heal_op = GF_SHD_OP_SBRAIN_HEAL_FROM_BRICK;
                        hostname = strtok (argv[3], ":");
                        path = strtok (NULL, ":");
                        file = argv[4];
                } else {
                        printf (USAGE_STR, argv[0]);
                        ret = -1;
                        goto out;
                }
                break;
        default:
                printf (USAGE_STR, argv[0]);
                ret = -1;
                goto out;
        }

        fs = glfs_new (volname);
        if (!fs) {
                ret = -1;
                printf ("Not able to initialize volume '%s'\n", volname);
                goto out;
        }

        ret = glfs_set_volfile_server (fs, "unix", DEFAULT_GLUSTERD_SOCKFILE, 0);
        if (ret) {
                printf("Setting the volfile server failed, %s\n", strerror (errno));
                goto out;
        }
        snprintf (logfilepath, sizeof (logfilepath),
                  DEFAULT_HEAL_LOG_FILE_DIRECTORY"/glfsheal-%s.log", volname);
        ret = glfs_set_logging(fs, logfilepath, GF_LOG_INFO);
        if (ret < 0) {
                printf ("Failed to set the log file path, %s\n", strerror (errno));
                goto out;
        }

        ret = glfs_init (fs);
        if (ret < 0) {
                ret = -1;
                if (errno == ENOENT) {
                        printf ("Volume %s does not exist\n", volname);
                }
                else {
                        printf ("%s: Not able to fetch volfile from "
                                 "glusterd\n", volname);
                }
                goto out;
        }

        sleep (2);
        top_subvol = glfs_active_subvol (fs);
        if (!top_subvol) {
                ret = -1;
                if (errno == ENOTCONN) {
                        printf ("Volume %s is not started (Or) All the bricks "
                                 "are not running.\n", volname);
                }
                else {
                        printf ("%s: Not able to mount the volume, %s\n",
                                 volname, strerror (errno));
                }
                goto out;
        }

        ret = glfsh_validate_volume (top_subvol, heal_op);
        if (ret < 0) {
                printf ("Volume %s is not of type %s\n", volname,
                        (heal_op == GF_SHD_OP_INDEX_SUMMARY) ?
                        "replicate/disperse":"replicate");
                goto out;
        }
        rootloc.inode = inode_ref (top_subvol->itable->root);
        glfs_loc_touchup (&rootloc);

        switch (heal_op) {
        case GF_SHD_OP_INDEX_SUMMARY:
        case GF_SHD_OP_SPLIT_BRAIN_FILES:
                ret = glfsh_gather_heal_info (fs, top_subvol, &rootloc,
                                              heal_op);
                break;
        case GF_SHD_OP_SBRAIN_HEAL_FROM_BIGGER_FILE:
                ret = glfsh_heal_from_bigger_file (fs, top_subvol,
                                                   &rootloc, file);
                        break;
        case GF_SHD_OP_SBRAIN_HEAL_FROM_BRICK:
                ret = glfsh_heal_from_brick (fs, top_subvol, &rootloc,
                                             hostname, path, file);
                break;
        default:
                ret = -1;
                break;
        }

        loc_wipe (&rootloc);
        glfs_subvol_done (fs, top_subvol);
        cleanup (fs);

        return ret;
out:
        if (fs && top_subvol)
                glfs_subvol_done (fs, top_subvol);
        loc_wipe (&rootloc);
        cleanup (fs);

        return ret;
}