source: MondoRescue/branches/stable/mondo/mondo/common/libmondo-raid.c@ 560

Last change on this file since 560 was 560, checked in by bcornec, 18 years ago

memmove removed for raid management in favour of asprintf
  • Property svn:keywords set to Id
File size: 32.7 KB
Line 
1/* libmondo-raid.c subroutines for handling RAID
2 $Id: libmondo-raid.c 560 2006-05-20 15:15:40Z bcornec $
3.
4
5
606/29
7- added create_raidtab_from_mdstat()
8- changed char[MAX_STR_LEN] to char*
9
1010/21/2003
11- get_next_raidtab_line() --- correctly handle multiple spaces
12 between label and value
13
1407/03
15- line 447 - changed assert()
16
1705/08
18- cleaned up some FreeBSd-specific stuff
19
2005/05
21- added Joshua Oreman's FreeBSD patches
22
2304/25
24- added a bunch of RAID utilities from mondorestore/mondo-restore.c
25
2604/24/2003
27- added some assert()'s and log_OS_error()'s
28
2910/19/2002
30- added some comments
31
3207/24
33- created
34*/
35
36
37/**
38 * @file
39 * Functions for handling RAID (especially during restore).
40 */
41
42#include "my-stuff.h"
43#include "mondostructures.h"
44#include "libmondo-gui-EXT.h"
45#include "libmondo-files-EXT.h"
46#include "libmondo-tools-EXT.h"
47#include "libmondo-string-EXT.h"
48#include "lib-common-externs.h"
49#include "libmondo-raid.h"
50
51#ifdef __FreeBSD__
52/* Nonstandard library functions: */
53extern void errx(int exitval, const char *fmt, ...);
54extern char *strsep(char **stringp, const char *delim);
55#endif
56
57/*@unused@*/
58//static char cvsid[] = "$Id: libmondo-raid.c 560 2006-05-20 15:15:40Z bcornec $";
59
60
61/**
62 * @addtogroup raidGroup
63 * @{
64 */
65/**
66 * See if a particular RAID level is supported by the kernel.
67 * @param raidno The RAID level (-1 through 5) to check. -1 means "linear" under Linux and
68 * "concatenated" under FreeBSD. It's really the same thing, just different wording.
69 * @return TRUE if it's supported, FALSE if not.
70 */
71bool is_this_raid_personality_registered(int raidno)
72{
73#ifdef __FreeBSD__
74 return ((raidno == -1) || (raidno == 0) || (raidno == 1)
75 || (raidno == 5)) ? TRUE : FALSE;
76#else
77 /*@ buffer ********************************************************** */
78 char *command;
79 int res;
80
81 command = malloc(MAX_STR_LEN * 2);
82 strcpy(command, "grep \" /proc/mdstat");
83 if (raidno == -1) {
84 strcat(command, "linear");
85 } else {
86 sprintf(command + strlen(command), "raid%d", raidno);
87 }
88 strcat(command, "\" > /dev/null 2> /dev/null");
89 log_it("Is raid %d registered? Command = '%s'", raidno, command);
90 res = system(command);
91 paranoid_free(command);
92 if (res) {
93 return (FALSE);
94 } else {
95 return (TRUE);
96 }
97#endif
98}
99
100
101
102
103
104
105/**
106 * Search for @p device in @p disklist.
107 * @param disklist The disklist to search in.
108 * @param device The device to search for.
109 * @return The index number of @p device, or -1 if it does not exist.
110 */
111int
112where_in_drivelist_is_drive(struct list_of_disks *disklist, char *device)
113{
114
115 /*@ int ************************************************************* */
116 int i = 0;
117
118 assert(disklist != NULL);
119 assert_string_is_neither_NULL_nor_zerolength(device);
120
121 for (i = 0; i < disklist->entries; i++) {
122 if (!strcmp(disklist->el[i].device, device)) {
123 break;
124 }
125 }
126 if (i == disklist->entries) {
127 return (-1);
128 } else {
129 return (i);
130 }
131}
132
133
134
135
136
137
138
139
140/**
141 * Determine which RAID device is using a particular partition.
142 * @param raidlist The RAID information structure.
143 * @param device The partition to find out about.
144 * @return The index number of the RAID device using @p device, or -1 if there is none.
145 */
146int
147which_raid_device_is_using_this_partition(struct raidlist_itself *raidlist,
148 char *device)
149{
150#ifdef __FreeBSD__
151// FreeBSD-specific version of which_raid_device_is_using_this_partition()
152 /*@ int ********************************************************* */
153 int i = 0;
154
155 for (i = 0; i < raidlist->entries; i++) {
156 bool thisone = FALSE;
157 int j, k, l;
158
159 for (j = 0; j < raidlist->el[i].plexes; ++j) {
160 for (k = 0; k < raidlist->el[i].plex[j].subdisks; ++k) {
161 for (l = 0; l < raidlist->disks.entries; ++l) {
162 if (!strcmp(raidlist->disks.el[l].device,
163 device) &&
164 !strcmp(raidlist->el[i].plex[j].sd[k].which_device,
165 raidlist->disks.el[l].name))
166 thisone = TRUE;
167 }
168 }
169 }
170
171 if (thisone) {
172 break;
173 }
174 }
175 if (i == raidlist->entries) {
176 return (-1);
177 } else {
178 return (i);
179 }
180}
181
182#else
183// Linux-specific version of which_raid_device_is_using_this_partition()
184// and one other function which FreeBSD doesn't use
185
186 int current_raiddev = 0;
187
188 assert_string_is_neither_NULL_nor_zerolength(device);
189 assert(raidlist != NULL);
190
191 for (current_raiddev = 0; current_raiddev < raidlist->entries;
192 current_raiddev++) {
193 if (where_in_drivelist_is_drive
194 (&raidlist->el[current_raiddev].data_disks, device) >= 0
195 || where_in_drivelist_is_drive(&raidlist->el[current_raiddev].
196 spare_disks, device) >= 0
197 || where_in_drivelist_is_drive(&raidlist->el[current_raiddev].
198 parity_disks, device) >= 0
199 || where_in_drivelist_is_drive(&raidlist->el[current_raiddev].
200 failed_disks, device) >= 0) {
201 break;
202 }
203 }
204 if (current_raiddev == raidlist->entries) {
205 return (-1);
206 } else {
207 return (current_raiddev);
208 }
209}
210
211/**
212 * Write an @c int variable to a list of RAID variables.
213 * @param raidrec The RAID device record to write to.
214 * @param lino The variable index number to modify/create.
215 * @param label The label to write.
216 * @param value The value to write.
217 */
218void
219write_variableINT_to_raid_var_line(struct raid_device_record *raidrec,
220 int lino, char *label, int value)
221{
222 /*@ buffers ***************************************************** */
223 char *sz_value;
224
225 malloc_string(sz_value);
226 assert(raidrec != NULL);
227 assert(label != NULL);
228
229 sprintf(sz_value, "%d", value);
230 strcpy(raidrec->additional_vars.el[lino].label, label);
231 strcpy(raidrec->additional_vars.el[lino].value, sz_value);
232 paranoid_free(sz_value);
233}
234#endif
235
236
237
238
239
240
241
242
243#ifdef __FreeBSD__
244/**
245 * Add a disk to a RAID plex.
246 * @param p The plex to add the device to.
247 * @param device_to_add The device to add to @p p.
248 */
249void add_disk_to_raid_device(struct vinum_plex *p, char *device_to_add)
250{
251 strcpy(p->sd[p->subdisks].which_device, device_to_add);
252 ++p->subdisks;
253
254}
255#else
256/**
257 * Add a disk to a RAID device.
258 * @param disklist The disklist to add the device to.
259 * @param device_to_add The device to add to @p disklist.
260 * @param index The index number of the disklist entry we're creating.
261 */
262void add_disk_to_raid_device(struct list_of_disks *disklist,
263 char *device_to_add, int index)
264{
265 int items;
266
267 assert(disklist != NULL);
268 assert_string_is_neither_NULL_nor_zerolength(device_to_add);
269 items = disklist->entries;
270 strcpy(disklist->el[items].device, device_to_add);
271 disklist->el[items].index = index;
272 items++;
273 disklist->entries = items;
274}
275#endif
276
277
278/**
279 * Save the additional RAID variables to a stream.
280 * @param vars The RAID variable list to save.
281 * @param fout The FILE pointer to save them to.
282 */
283void
284save_additional_vars_to_file(struct additional_raid_variables *vars,
285 FILE * fout)
286{
287 int i;
288
289 assert(vars != NULL);
290 assert(fout != NULL);
291
292 for (i = 0; i < vars->entries; i++) {
293 fprintf(fout, " %-21s %s\n", vars->el[i].label,
294 vars->el[i].value);
295 }
296}
297
298
299/**
300 * Save a raidlist structure to disk in raidtab format.
301 * @param raidlist The raidlist to save.
302 * @param fname The file to save it to.
303 * @return 0, always.
304 * @bug Return value is redundant.
305 */
306int save_raidlist_to_raidtab(struct raidlist_itself *raidlist, char *fname)
307{
308 FILE *fout;
309 int current_raid_device;
310#ifdef __FreeBSD__
311 int i;
312#else
313// Linux
314#endif
315
316 assert(raidlist != NULL);
317 assert_string_is_neither_NULL_nor_zerolength(fname);
318
319 if (raidlist->entries <= 0) {
320 unlink(fname);
321 log_it("Deleting raidtab (no RAID devs anyway)");
322 return (0);
323 }
324 if (!(fout = fopen(fname, "w"))) {
325 log_OS_error("Failed to save raidlist");
326 return (1);
327 }
328 fprintf(fout, "# Generated by Mondo Rescue\n");
329
330#ifdef __FreeBSD__
331 for (i = 0; i < raidlist->disks.entries; ++i) {
332 fprintf(fout, "drive %s device %s\n", raidlist->disks.el[i].name,
333 raidlist->disks.el[i].device);
334 }
335 for (i = 0; i < (raidlist->spares.entries); ++i) {
336 fprintf(fout, "drive %s device %s hotspare\n",
337 raidlist->spares.el[i].name,
338 raidlist->spares.el[i].device);
339 }
340#endif
341
342 for (current_raid_device = 0; current_raid_device < raidlist->entries;
343 current_raid_device++) {
344 save_raidrec_to_file(&raidlist->el[current_raid_device], fout);
345 }
346 paranoid_fclose(fout);
347 return (0);
348}
349
350
351/**
352 * Save an individual RAID device record to a stream.
353 * @param raidrec The RAID device record to save.
354 * @param fout The stream to save it to.
355 */
356void save_raidrec_to_file(struct
357#ifdef __FreeBSD__
358 vinum_volume
359#else
360 raid_device_record
361#endif
362 * raidrec, FILE * fout)
363{
364#ifdef __FreeBSD__
365 int i, j;
366
367 fprintf(fout, "\nvolume %s\n", raidrec->volname);
368 for (i = 0; i < raidrec->plexes; ++i) {
369 char org[24];
370 switch (raidrec->plex[i].raidlevel) {
371 case -1:
372 strcpy(org, "concat");
373 break;
374 case 0:
375 strcpy(org, "striped");
376 break;
377 case 5:
378 strcpy(org, "raid5");
379 break;
380 }
381 fprintf(fout, " plex org %s", org);
382 if (raidrec->plex[i].raidlevel != -1) {
383 fprintf(fout, " %ik", raidrec->plex[i].stripesize);
384 }
385 fprintf(fout, "\n");
386
387 for (j = 0; j < raidrec->plex[i].subdisks; ++j) {
388 fprintf(fout, " sd drive %s size 0\n",
389 raidrec->plex[i].sd[j].which_device);
390 }
391 }
392#else
393 assert(raidrec != NULL);
394 assert(fout != NULL);
395
396 fprintf(fout, "raiddev %s\n", raidrec->raid_device);
397 if (raidrec->raid_level == -2) {
398 fprintf(fout, " raid-level multipath\n");
399 } else if (raidrec->raid_level == -1) {
400 fprintf(fout, " raid-level linear\n");
401 } else {
402 fprintf(fout, " raid-level %d\n",
403 raidrec->raid_level);
404 }
405 fprintf(fout, " nr-raid-disks %d\n",
406 raidrec->data_disks.entries);
407 if (raidrec->spare_disks.entries > 0) {
408 fprintf(fout, " nr-spare-disks %d\n",
409 raidrec->spare_disks.entries);
410 }
411 if (raidrec->parity_disks.entries > 0) {
412 fprintf(fout, " nr-parity-disks %d\n",
413 raidrec->parity_disks.entries);
414 }
415 fprintf(fout, " persistent-superblock %d\n",
416 raidrec->persistent_superblock);
417 if (raidrec->chunk_size > -1) {
418 fprintf(fout, " chunk-size %d\n", raidrec->chunk_size);
419 }
420 if (raidrec->parity > -1) {
421 switch(raidrec->parity) {
422 case 0:
423 fprintf(fout, " parity-algorithm left-asymmetric\n");
424 break;
425 case 1:
426 fprintf(fout, " parity-algorithm right-asymmetric\n");
427 break;
428 case 2:
429 fprintf(fout, " parity-algorithm left-symmetric\n");
430 break;
431 case 3:
432 fprintf(fout, " parity-algorithm right-symmetric\n");
433 break;
434 default:
435 fatal_error("Unknown RAID parity algorithm.");
436 break;
437 }
438 }
439 save_additional_vars_to_file(&raidrec->additional_vars, fout);
440 fprintf(fout, "\n");
441 save_disklist_to_file("raid-disk", &raidrec->data_disks, fout);
442 save_disklist_to_file("spare-disk", &raidrec->spare_disks, fout);
443 save_disklist_to_file("parity-disk", &raidrec->parity_disks, fout);
444 save_disklist_to_file("failed-disk", &raidrec->failed_disks, fout);
445 fprintf(fout, "\n");
446#endif
447}
448
449/**
450 * Retrieve the next line from a raidtab stream.
451 * @param fin The file to read the input from.
452 * @param label Where to put the line's label.
453 * @param value Where to put the line's value.
454 * @return 0 if the line was read and stored successfully, 1 if we're at end of file.
455 */
456int get_next_raidtab_line(FILE * fin, char *label, char *value)
457{
458 char *incoming;
459 char *p;
460
461 malloc_string(incoming);
462 assert(fin != NULL);
463 assert(label != NULL);
464 assert(value != NULL);
465
466 label[0] = value[0] = '\0';
467 if (feof(fin)) {
468 paranoid_free(incoming);
469 return (1);
470 }
471 for (fgets(incoming, MAX_STR_LEN - 1, fin); !feof(fin);
472 fgets(incoming, MAX_STR_LEN - 1, fin)) {
473 strip_spaces(incoming);
474 p = strchr(incoming, ' ');
475 if (strlen(incoming) < 3 || incoming[0] == '#' || !p) {
476 continue;
477 }
478 *(p++) = '\0';
479 while (*p == ' ') {
480 p++;
481 }
482 strcpy(label, incoming);
483 strcpy(value, p);
484 paranoid_free(incoming);
485 return (0);
486 }
487 return (1);
488}
489
490
491
492/**
493 * Load a raidtab file into a raidlist structure.
494 * @param raidlist The raidlist to fill.
495 * @param fname The file to read from.
496 * @return 0 for success, 1 for failure.
497 */
498#ifdef __FreeBSD__
499int load_raidtab_into_raidlist(struct raidlist_itself *raidlist,
500 char *fname)
501{
502 FILE *fin;
503 char *tmp;
504 int items;
505
506 malloc_string(tmp);
507 raidlist->spares.entries = 0;
508 raidlist->disks.entries = 0;
509 if (length_of_file(fname) < 5) {
510 log_it("Raidtab is very small or non-existent. Ignoring it.");
511 raidlist->entries = 0;
512 paranoid_free(tmp);
513 return (0);
514 }
515 if (!(fin = fopen(fname, "r"))) {
516 log_it("Cannot open raidtab");
517 paranoid_free(tmp);
518 return (1);
519 }
520 items = 0;
521 log_it("Loading raidtab...");
522 while (!feof(fin)) {
523 int argc;
524 char **argv = get_next_vinum_conf_line(fin, &argc);
525 if (!argv)
526 break;
527 if (!strcmp(argv[0], "drive")) {
528 char *drivename, *devname;
529 if (argc < 4)
530 continue;
531 drivename = argv[1];
532 devname = get_option_val(argc, argv, "device");
533 if (!devname)
534 continue;
535
536 if (get_option_state(argc, argv, "hotspare")) {
537 strcpy(raidlist->spares.el[raidlist->spares.entries].name,
538 drivename);
539 strcpy(raidlist->spares.el[raidlist->spares.entries].
540 device, devname);
541 raidlist->spares.el[raidlist->spares.entries].index =
542 raidlist->disks.entries;
543 raidlist->spares.entries++;
544 } else {
545 strcpy(raidlist->disks.el[raidlist->disks.entries].name,
546 drivename);
547 strcpy(raidlist->disks.el[raidlist->disks.entries].device,
548 devname);
549 raidlist->disks.el[raidlist->disks.entries].index =
550 raidlist->disks.entries;
551 raidlist->disks.entries++;
552 }
553 } else if (!strcmp(argv[0], "volume")) {
554 char *volname;
555 if (argc < 2)
556 continue;
557 volname = argv[1];
558 strcpy(raidlist->el[raidlist->entries].volname, volname);
559 raidlist->el[raidlist->entries].plexes = 0;
560 raidlist->entries++;
561 } else if (!strcmp(argv[0], "plex")) {
562 int raidlevel, stripesize;
563 char *org = 0;
564 char **tmp = 0;
565 if (argc < 3)
566 continue;
567 org = get_option_val(argc, argv, "org");
568 if (!org)
569 continue;
570 if (strcmp(org, "concat")) {
571 tmp = get_option_vals(argc, argv, "org", 2);
572 if (tmp && tmp[1]) {
573 stripesize = (int) (size_spec(tmp[1]) / 1024);
574 } else
575 stripesize = 279;
576 } else
577 stripesize = 0;
578
579 if (!strcmp(org, "concat")) {
580 raidlevel = -1;
581 } else if (!strcmp(org, "striped")) {
582 raidlevel = 0;
583 } else if (!strcmp(org, "raid5")) {
584 raidlevel = 5;
585 } else
586 continue;
587
588 raidlist->el[raidlist->entries - 1].plex
589 [raidlist->el[raidlist->entries - 1].plexes].raidlevel =
590 raidlevel;
591 raidlist->el[raidlist->entries -
592 1].plex[raidlist->el[raidlist->entries -
593 1].plexes].stripesize =
594 stripesize;
595 raidlist->el[raidlist->entries -
596 1].plex[raidlist->el[raidlist->entries -
597 1].plexes].subdisks = 0;
598 raidlist->el[raidlist->entries - 1].plexes++;
599 } else if ((!strcmp(argv[0], "sd"))
600 || (!strcmp(argv[0], "subdisk"))) {
601 char *drive = 0;
602 if (argc < 3)
603 continue;
604 drive = get_option_val(argc, argv, "drive");
605 if (!drive)
606 continue;
607
608 strcpy(raidlist->el[raidlist->entries - 1].plex
609 [raidlist->el[raidlist->entries - 1].plexes - 1].sd
610 [raidlist->el[raidlist->entries - 1].plex
611 [raidlist->el[raidlist->entries - 1].plexes -
612 1].subdisks].which_device, drive);
613 raidlist->el[raidlist->entries -
614 1].plex[raidlist->el[raidlist->entries -
615 1].plexes - 1].subdisks++;
616 }
617 }
618 fclose(fin);
619 log_it("Raidtab loaded successfully.");
620 sprintf(tmp, "%d RAID devices in raidtab", raidlist->entries);
621 log_it(tmp);
622 paranoid_free(tmp);
623 return (0);
624}
625
626
627#else
628
629int load_raidtab_into_raidlist(struct raidlist_itself *raidlist,
630 char *fname)
631{
632 FILE *fin;
633 char *tmp;
634 char *label;
635 char *value;
636 int items;
637 int v;
638
639 malloc_string(tmp);
640 malloc_string(label);
641 malloc_string(value);
642 assert(raidlist != NULL);
643 assert_string_is_neither_NULL_nor_zerolength(fname);
644
645 if (length_of_file(fname) < 5) {
646 log_it("Raidtab is very small or non-existent. Ignoring it.");
647 raidlist->entries = 0;
648 paranoid_free(tmp);
649 paranoid_free(label);
650 paranoid_free(value);
651 return (0);
652 }
653 if (!(fin = fopen(fname, "r"))) {
654 log_it("Cannot open raidtab");
655 paranoid_free(tmp);
656 paranoid_free(label);
657 paranoid_free(value);
658 return (1);
659 }
660 items = 0;
661 log_it("Loading raidtab...");
662 get_next_raidtab_line(fin, label, value);
663 while (!feof(fin)) {
664 log_msg(1, "Looking for raid record #%d", items);
665 initialize_raidrec(&raidlist->el[items]);
666 v = 0;
667 /* find the 'raiddev' entry, indicating the start of the block of info */
668 while (!feof(fin) && strcmp(label, "raiddev")) {
669 strcpy(raidlist->el[items].additional_vars.el[v].label, label);
670 strcpy(raidlist->el[items].additional_vars.el[v].value, value);
671 v++;
672 get_next_raidtab_line(fin, label, value);
673 log_it(tmp);
674 }
675 raidlist->el[items].additional_vars.entries = v;
676 if (feof(fin)) {
677 log_msg(1, "No more records.");
678 continue;
679 }
680 log_msg(2, "Record #%d (%s) found", items, value);
681 strcpy(raidlist->el[items].raid_device, value);
682 for (get_next_raidtab_line(fin, label, value);
683 !feof(fin) && strcmp(label, "raiddev");
684 get_next_raidtab_line(fin, label, value)) {
685 process_raidtab_line(fin, &raidlist->el[items], label, value);
686 }
687 items++;
688 }
689 paranoid_fclose(fin);
690 raidlist->entries = items;
691 log_msg(1, "Raidtab loaded successfully.");
692 log_msg(1, "%d RAID devices in raidtab", items);
693 paranoid_free(tmp);
694 paranoid_free(label);
695 paranoid_free(value);
696 return (0);
697}
698#endif
699
700
701
702
703
704
705
706
707#ifndef __FreeBSD__
708/**
709 * Process a single line from the raidtab and store the results into @p raidrec.
710 * @param fin The stream to read the line from.
711 * @param raidrec The RAID device record to update.
712 * @param label Where to put the label processed.
713 * @param value Where to put the value processed.
714 */
715void
716process_raidtab_line(FILE * fin,
717 struct raid_device_record *raidrec,
718 char *label, char *value)
719{
720
721 /*@ add mallocs * */
722 char *tmp;
723 char *labelB;
724 char *valueB;
725
726 struct list_of_disks *disklist;
727 int index;
728 int v;
729
730 malloc_string(tmp);
731 malloc_string(labelB);
732 malloc_string(valueB);
733 assert(fin != NULL);
734 assert(raidrec != NULL);
735 assert_string_is_neither_NULL_nor_zerolength(label);
736 assert(value != NULL);
737
738 if (!strcmp(label, "raid-level")) {
739 if (!strcmp(value, "multipath")) {
740 raidrec->raid_level = -2;
741 } else if (!strcmp(value, "linear")) {
742 raidrec->raid_level = -1;
743 } else {
744 raidrec->raid_level = atoi(value);
745 }
746 } else if (!strcmp(label, "nr-raid-disks")) { /* ignore it */
747 } else if (!strcmp(label, "nr-spare-disks")) { /* ignore it */
748 } else if (!strcmp(label, "nr-parity-disks")) { /* ignore it */
749 } else if (!strcmp(label, "nr-failed-disks")) { /* ignore it */
750 } else if (!strcmp(label, "persistent-superblock")) {
751 raidrec->persistent_superblock = atoi(value);
752 } else if (!strcmp(label, "chunk-size")) {
753 raidrec->chunk_size = atoi(value);
754 } else if (!strcmp(label, "parity-algorithm")) {
755 if (!strcmp(value, "left-asymmetric")) {
756 raidrec->parity = 0;
757 } else if (!strcmp(value, "right-asymmetric")) {
758 raidrec->parity = 1;
759 } else if (!strcmp(value, "left-symmetric")) {
760 raidrec->parity = 2;
761 } else if (!strcmp(value, "right-symmetric")) {
762 raidrec->parity = 3;
763 } else {
764 log_msg(1, "Unknown RAID parity algorithm '%s'\n.", value);
765 }
766 } else if (!strcmp(label, "device")) {
767 get_next_raidtab_line(fin, labelB, valueB);
768 if (!strcmp(labelB, "raid-disk")) {
769 disklist = &raidrec->data_disks;
770 } else if (!strcmp(labelB, "spare-disk")) {
771 disklist = &raidrec->spare_disks;
772 } else if (!strcmp(labelB, "parity-disk")) {
773 disklist = &raidrec->parity_disks;
774 } else if (!strcmp(labelB, "failed-disk")) {
775 disklist = &raidrec->failed_disks;
776 } else {
777 disklist = NULL;
778 }
779 if (!disklist) {
780 sprintf(tmp,
781 "Ignoring '%s %s' pair of disk %s", labelB, valueB,
782 label);
783 log_it(tmp);
784 } else {
785 index = atoi(valueB);
786 add_disk_to_raid_device(disklist, value, index);
787 }
788 } else {
789 v = raidrec->additional_vars.entries;
790 strcpy(raidrec->additional_vars.el[v].label, label);
791 strcpy(raidrec->additional_vars.el[v].value, value);
792 raidrec->additional_vars.entries = ++v;
793 }
794 paranoid_free(tmp);
795 paranoid_free(labelB);
796 paranoid_free(valueB);
797}
798#endif
799
800
801/**
802 * Save a disklist to a stream in raidtab format.
803 * @param listname One of "raid-disk", "spare-disk", "parity-disk", or "failed-disk".
804 * @param disklist The disklist to save to @p fout.
805 * @param fout The stream to write to.
806 */
807void
808save_disklist_to_file(char *listname,
809 struct list_of_disks *disklist, FILE * fout)
810{
811 int i;
812
813 assert_string_is_neither_NULL_nor_zerolength(listname);
814 assert(disklist != NULL);
815 assert(fout != NULL);
816
817 for (i = 0; i < disklist->entries; i++) {
818 fprintf(fout, " device %s\n",
819 disklist->el[i].device);
820 fprintf(fout, " %-21s %d\n", listname, disklist->el[i].index);
821 }
822}
823
824
825
826
827
828#ifdef __FreeBSD__
829/**
830 * Add a new plex to a volume. The index of the plex will be <tt>v-\>plexes - 1</tt>.
831 * @param v The volume to operate on.
832 * @param raidlevel The RAID level of the new plex.
833 * @param stripesize The stripe size (chunk size) of the new plex.
834 */
835void add_plex_to_volume(struct vinum_volume *v, int raidlevel,
836 int stripesize)
837{
838 v->plex[v->plexes].raidlevel = raidlevel;
839 v->plex[v->plexes].stripesize = stripesize;
840 v->plex[v->plexes].subdisks = 0;
841 ++v->plexes;
842}
843
844/**
845 * For internal use only.
846 */
847char **get_next_vinum_conf_line(FILE * f, int *argc)
848{
849 int cnt = 0;
850 static char *argv[64];
851 char **ap;
852 char *line = (char *) malloc(MAX_STR_LEN);
853 if (!line)
854 errx(1,
855 "unable to allocate %i bytes of memory for `char *line' at %s:%i",
856 MAX_STR_LEN, __FILE__, __LINE__);
857 (void) fgets(line, MAX_STR_LEN, f);
858 if (feof(f)) {
859 log_it("[GNVCL] Uh... I reached the EOF.");
860 return 0;
861 }
862
863 for (ap = argv; (*ap = strsep(&line, " \t")) != NULL;)
864 if (**ap != '\0') {
865 if (++ap >= &argv[64])
866 break;
867 cnt++;
868 }
869
870 if (strchr(argv[cnt - 1], '\n')) {
871 *(strchr(argv[cnt - 1], '\n')) = '\0';
872 }
873
874 if (argc)
875 *argc = cnt;
876 return argv;
877}
878
879/**
880 * For internal use only.
881 */
882char *get_option_val(int argc, char **argv, char *option)
883{
884 int i;
885 for (i = 0; i < (argc - 1); ++i) {
886 if (!strcmp(argv[i], option)) {
887 return argv[i + 1];
888 }
889 }
890 return 0;
891}
892
893/**
894 * For internal use only.
895 */
896char **get_option_vals(int argc, char **argv, char *option, int nval)
897{
898 int i, j;
899 static char **ret;
900 ret = (char **) malloc(nval * sizeof(char *));
901 for (i = 0; i < (argc - nval); ++i) {
902 if (!strcmp(argv[i], option)) {
903 for (j = 0; j < nval; ++j) {
904 ret[j] = (char *) malloc(strlen(argv[i + j + 1]) + 1);
905 strcpy(ret[j], argv[i + j + 1]);
906 }
907 return ret;
908 }
909 }
910 return 0;
911}
912
913/**
914 * For internal use only.
915 */
916bool get_option_state(int argc, char **argv, char *option)
917{
918 int i;
919 for (i = 0; i < argc; ++i)
920 if (!strcmp(argv[i], option))
921 return TRUE;
922
923 return FALSE;
924}
925
926/**
927 * Taken from Vinum source -- for internal use only.
928 */
929long long size_spec(char *spec)
930{
931 u_int64_t size;
932 char *s;
933 int sign = 1; /* -1 if negative */
934
935 size = 0;
936 if (spec != NULL) { /* we have a parameter */
937 s = spec;
938 if (*s == '-') { /* negative, */
939 sign = -1;
940 s++; /* skip */
941 }
942 if ((*s >= '0') && (*s <= '9')) { /* it's numeric */
943 while ((*s >= '0') && (*s <= '9')) /* it's numeric */
944 size = size * 10 + *s++ - '0'; /* convert it */
945 switch (*s) {
946 case '\0':
947 return size * sign;
948
949 case 'B':
950 case 'b':
951 case 'S':
952 case 's':
953 return size * sign * 512;
954
955 case 'K':
956 case 'k':
957 return size * sign * 1024;
958
959 case 'M':
960 case 'm':
961 return size * sign * 1024 * 1024;
962
963 case 'G':
964 case 'g':
965 return size * sign * 1024 * 1024 * 1024;
966
967 case 'T':
968 case 't':
969 log_it
970 ("Ok, I'm scared... Someone did a TERABYTE+ size-spec");
971 return size * sign * 1024 * 1024 * 1024 * 1024;
972
973 case 'P':
974 case 'p':
975 log_it
976 ("If I was scared last time, I'm freaked out now. Someone actually has a PETABYTE?!?!?!?!");
977 return size * sign * 1024 * 1024 * 1024 * 1024 * 1024;
978
979 case 'E':
980 case 'e':
981 log_it
982 ("Okay, I'm REALLY freaked out. Who could devote a whole EXABYTE to their data?!?!");
983 return size * sign * 1024 * 1024 * 1024 * 1024 * 1024 *
984 1024;
985
986 case 'Z':
987 case 'z':
988 log_it
989 ("WHAT!?!? A ZETABYTE!?!? You've GOT to be kidding me!!!");
990 return size * sign * 1024 * 1024 * 1024 * 1024 * 1024 *
991 1024 * 1024;
992
993 case 'Y':
994 case 'y':
995 log_it
996 ("Oh my gosh. You actually think a YOTTABYTE will get you anywhere? What're you going to do with 1,208,925,819,614,629,174,706,176 bytes?!?!");
997 popup_and_OK
998 ("That sizespec is more than 1,208,925,819,614,629,174,706,176 bytes. You have a shocking amount of data. Please send a screenshot to the list :-)");
999 return size * sign * 1024 * 1024 * 1024 * 1024 * 1024 *
1000 1024 * 1024 * 1024;
1001 }
1002 }
1003 }
1004 return size * sign;
1005}
1006
1007#endif
1008
1009
1010
1011
1012int parse_mdstat(struct raidlist_itself *raidlist, char *device_prefix) {
1013
1014 const char delims[] = " ";
1015
1016 FILE *fin;
1017 int res = 0, row, i, index_min;
1018 int lastpos = 0;
1019 size_t len = 0;
1020 char *token;
1021 char *string = NULL;
1022 char *pos;
1023 char type;
1024 char *strtmp;
1025
1026 // open file
1027 if (!(fin = fopen(MDSTAT_FILE, "r"))) {
1028 log_msg(1, "Could not open %s.\n", MDSTAT_FILE);
1029 return 1;
1030 }
1031 // initialise record, build progress and row counters
1032 raidlist->entries = 0;
1033 raidlist->el[raidlist->entries].progress = 999;
1034 row = 1;
1035 // skip first output row - contains registered RAID levels
1036 res = getline(&string, &len, fin);
1037 // parse the rest
1038 while ( !feof_unlocked(fin) ) {
1039 res = getline(&string, &len, fin);
1040 if (res <= 0) break;
1041 // trim leading spaces
1042 pos = string;
1043 while (*pos == ' ') *pos++;
1044 asprintf(&string, pos);
1045 //
1046 // if we have newline after only spaces, this is a blank line, update
1047 // counters, otherwise do normal parsing
1048 if (*string == '\n') {
1049 row = 1;
1050 raidlist->entries++;
1051 raidlist->el[raidlist->entries].progress = 999;
1052 } else {
1053 switch (row) {
1054 case 1: // device information
1055 // check whether last line of record and if so skip
1056 pos = strcasestr(string, "unused devices: ");
1057 if (pos == string) {
1058 //raidlist->entries--;
1059 break;
1060 }
1061 // tokenise string
1062 token = mr_strtok (string, delims, &lastpos);
1063 // get RAID device name
1064 asprintf(&strtmp,"%s%s", device_prefix, token);
1065 strcpy(raidlist->el[raidlist->entries].raid_device, strtmp);
1066 paranoid_free(strtmp);
1067 paranoid_free(token);
1068 // skip ':' and status
1069 token = strtok (string, delims, &lastpos);
1070 paranoid_free(token);
1071 token = strtok (string, delims, &lastpos);
1072 if (!strcmp(token, "inactive")) {
1073 log_msg(1, "RAID device '%s' inactive.\n",
1074 raidlist->el[raidlist->entries].raid_device);
1075 paranoid_free(string);
1076 paranoid_free(token);
1077 return 1;
1078 }
1079 paranoid_free(token);
1080
1081 // get RAID level
1082 token = strtok (string, delims, &lastpos);
1083 if (!strcmp(token, "multipath")) {
1084 raidlist->el[raidlist->entries].raid_level = -2;
1085 } else if (!strcmp(token, "linear")) {
1086 raidlist->el[raidlist->entries].raid_level = -1;
1087 } else if (!strcmp(token, "raid0")) {
1088 raidlist->el[raidlist->entries].raid_level = 0;
1089 } else if (!strcmp(token, "raid1")) {
1090 raidlist->el[raidlist->entries].raid_level = 1;
1091 } else if (!strcmp(token, "raid4")) {
1092 raidlist->el[raidlist->entries].raid_level = 4;
1093 } else if (!strcmp(token, "raid5")) {
1094 raidlist->el[raidlist->entries].raid_level = 5;
1095 } else if (!strcmp(token, "raid6")) {
1096 raidlist->el[raidlist->entries].raid_level = 6;
1097 } else if (!strcmp(token, "raid10")) {
1098 raidlist->el[raidlist->entries].raid_level = 10;
1099 } else {
1100 log_msg(1, "Unknown RAID level '%s'.\n", token);
1101 paranoid_free(string);
1102 paranoid_free(token);
1103 return 1;
1104 }
1105 paranoid_free(token);
1106
1107 // get RAID devices (type, index, device)
1108 // Note: parity disk for RAID4 is last normal disk, there is no '(P)'
1109 raidlist->el[raidlist->entries].data_disks.entries = 0;
1110 raidlist->el[raidlist->entries].spare_disks.entries = 0;
1111 raidlist->el[raidlist->entries].failed_disks.entries = 0;
1112 while((token = strtok (string, delims, &lastpos))) {
1113 if ((pos = strstr(token, "("))) {
1114 type = *(pos+1);
1115 } else {
1116 type = ' ';
1117 }
1118 pos = strstr(token, "[");
1119 *pos = '\0';
1120 switch(type) {
1121 case ' ': // normal data disks
1122 raidlist->el[raidlist->entries].data_disks.el[raidlist->el[raidlist->entries].data_disks.entries].index = atoi(pos + 1);
1123 asprintf(&strtmp,"%s%s", device_prefix, token);
1124 strcpy(raidlist->el[raidlist->entries].data_disks.el[raidlist->el[raidlist->entries].data_disks.entries].device, strtmp);
1125 paranoid_free(strtmp);
1126 raidlist->el[raidlist->entries].data_disks.entries++;
1127 break;
1128 case 'S': // spare disks
1129 raidlist->el[raidlist->entries].spare_disks.el[raidlist->el[raidlist->entries].spare_disks.entries].index = atoi(pos + 1);
1130 asprintf(&strtmp,"%s%s", device_prefix, token);
1131 strcpy(raidlist->el[raidlist->entries].spare_disks.el[raidlist->el[raidlist->entries].spare_disks.entries].device, strtmp);
1132 paranoid_free(strtmp);
1133 raidlist->el[raidlist->entries].spare_disks.entries++;
1134 break;
1135 case 'F': // failed disks
1136 raidlist->el[raidlist->entries].failed_disks.el[raidlist->el[raidlist->entries].failed_disks.entries].index = atoi(pos + 1);
1137 asprintf(&strtmp,"%s%s", device_prefix, token);
1138 strcpy(raidlist->el[raidlist->entries].failed_disks.el[raidlist->el[raidlist->entries].failed_disks.entries].device, strtmp);
1139 paranoid_free(strtmp);
1140 raidlist->el[raidlist->entries].failed_disks.entries++;
1141 log_it("At least one failed disk found in RAID array.\n");
1142 break;
1143 default: // error
1144 log_msg(1, "Unknown device type '%c'\n", type);
1145 paranoid_free(string);
1146 paranoid_free(token);
1147 return 1;
1148 break;
1149 }
1150 paranoid_free(token);
1151 }
1152
1153 // adjust index for each device so that it starts with 0 for every type
1154 index_min = 99;
1155 for (i=0; i<raidlist->el[raidlist->entries].data_disks.entries;i++) {
1156 if (raidlist->el[raidlist->entries].data_disks.el[i].index < index_min) {
1157 index_min = raidlist->el[raidlist->entries].data_disks.el[i].index;
1158 }
1159 }
1160 if (index_min > 0) {
1161 for (i=0; i<raidlist->el[raidlist->entries].data_disks.entries;i++) {
1162 raidlist->el[raidlist->entries].data_disks.el[i].index = raidlist->el[raidlist->entries].data_disks.el[i].index - index_min;
1163 }
1164 }
1165 index_min = 99;
1166 for (i=0; i<raidlist->el[raidlist->entries].spare_disks.entries;i++) {
1167 if (raidlist->el[raidlist->entries].spare_disks.el[i].index < index_min) {
1168 index_min = raidlist->el[raidlist->entries].spare_disks.el[i].index;
1169 }
1170 }
1171 if (index_min > 0) {
1172 for (i=0; i<raidlist->el[raidlist->entries].spare_disks.entries;i++) {
1173 raidlist->el[raidlist->entries].spare_disks.el[i].index = raidlist->el[raidlist->entries].spare_disks.el[i].index - index_min;
1174 }
1175 }
1176 index_min = 99;
1177 for (i=0; i<raidlist->el[raidlist->entries].failed_disks.entries;i++) {
1178 if (raidlist->el[raidlist->entries].failed_disks.el[i].index < index_min) {
1179 index_min = raidlist->el[raidlist->entries].failed_disks.el[i].index;
1180 }
1181 }
1182 if (index_min > 0) {
1183 for (i=0; i<raidlist->el[raidlist->entries].failed_disks.entries;i++) {
1184 raidlist->el[raidlist->entries].failed_disks.el[i].index = raidlist->el[raidlist->entries].failed_disks.el[i].index - index_min;
1185 }
1186 }
1187 break;
1188 case 2: // config information
1189 // check for persistent super block
1190 if (strcasestr(string, "super non-persistent")) {
1191 raidlist->el[raidlist->entries].persistent_superblock = 0;
1192 } else {
1193 raidlist->el[raidlist->entries].persistent_superblock = 1;
1194 }
1195 // extract chunk size
1196 if (!(pos = strcasestr(string, "k chunk"))) {
1197 raidlist->el[raidlist->entries].chunk_size = -1;
1198 } else {
1199 while (*pos != ' ') {
1200 *pos--;
1201 if (pos < string) {
1202 log_it("String underflow!\n");
1203 paranoid_free(string);
1204 return 1;
1205 }
1206 }
1207 raidlist->el[raidlist->entries].chunk_size = atoi(pos + 1);
1208 }
1209 // extract parity if present
1210 if ((pos = strcasestr(string, "algorithm"))) {
1211 raidlist->el[raidlist->entries].parity = atoi(pos + 9);
1212 } else {
1213 raidlist->el[raidlist->entries].parity = -1;
1214 }
1215 break;
1216 case 3: // optional build status information
1217 if (!(pos = strchr(string, '\%'))) {
1218 if (strcasestr(string, "delayed")) {
1219 raidlist->el[raidlist->entries].progress = -1; // delayed (therefore, stuck at 0%)
1220 } else {
1221 raidlist->el[raidlist->entries].progress = 999; // not found
1222 }
1223 } else {
1224 while (*pos != ' ') {
1225 *pos--;
1226 if (pos < string) {
1227 printf("ERROR: String underflow!\n");
1228 paranoid_free(string);
1229 return 1;
1230 }
1231 }
1232 raidlist->el[raidlist->entries].progress = atoi(pos);
1233 }
1234 break;
1235 default: // error
1236 log_msg(1, "Row %d should not occur in record!\n", row);
1237 break;
1238 }
1239 row++;
1240 }
1241 }
1242 // close file
1243 fclose(fin);
1244 // free string
1245 paranoid_free(string);
1246 // return success
1247 return 0;
1248
1249}
1250
1251
1252
1253
1254int create_raidtab_from_mdstat(char *raidtab_fname)
1255{
1256 struct raidlist_itself *raidlist;
1257 int retval = 0;
1258
1259 raidlist = malloc(sizeof(struct raidlist_itself));
1260
1261 // FIXME: Prefix '/dev/' should really be dynamic!
1262 if (parse_mdstat(raidlist, "/dev/")) {
1263 log_to_screen("Sorry, cannot read %s", MDSTAT_FILE);
1264 return (1);
1265 }
1266
1267 retval += save_raidlist_to_raidtab(raidlist, raidtab_fname);
1268 return (retval);
1269}
1270
1271
1272
1273/* @} - end of raidGroup */
Note: See TracBrowser for help on using the repository browser.