source: MondoRescue/branches/3.3/mondo/src/common/libmondo-raid.c

Last change on this file was 3893, checked in by Bruno Cornec, 3 months ago

Remove more warnings - switch and size_t/int comparisons

  • Property svn:keywords set to Id
File size: 33.9 KB
RevLine 
[1]1/* libmondo-raid.c subroutines for handling RAID
[128]2 $Id: libmondo-raid.c 3893 2024-03-13 15:49:30Z bruno $
[1]3*/
4
5
6/**
7 * @file
8 * Functions for handling RAID (especially during restore).
9 */
10
11#include "my-stuff.h"
12#include "mondostructures.h"
[541]13#include "libmondo-gui-EXT.h"
[1]14#include "libmondo-files-EXT.h"
15#include "libmondo-tools-EXT.h"
16#include "libmondo-string-EXT.h"
[3043]17#include "libmondo-fork-EXT.h"
[3871]18
[2211]19#include "mr_mem.h"
[2241]20#include "mr_str.h"
[1]21
22#ifdef __FreeBSD__
23/* Nonstandard library functions: */
[128]24extern void errx(int exitval, const char *fmt, ...);
25extern char *strsep(char **stringp, const char *delim);
[1]26#endif
27
28/*@unused@*/
[128]29//static char cvsid[] = "$Id: libmondo-raid.c 3893 2024-03-13 15:49:30Z bruno $";
[1]30
31
32/**
33 * @addtogroup raidGroup
34 * @{
35 */
36/**
37 * See if a particular RAID level is supported by the kernel.
38 * @param raidno The RAID level (-1 through 5) to check. -1 means "linear" under Linux and
39 * "concatenated" under FreeBSD. It's really the same thing, just different wording.
40 * @return TRUE if it's supported, FALSE if not.
41 */
[128]42bool is_this_raid_personality_registered(int raidno)
[1]43{
44#ifdef __FreeBSD__
[128]45 return ((raidno == -1) || (raidno == 0) || (raidno == 1)
46 || (raidno == 5)) ? TRUE : FALSE;
[1]47#else
[128]48 /*@ buffer ********************************************************** */
[2211]49 char *command = NULL;
[128]50 int res;
51
[3185]52 mr_asprintf(command, "grep \"");
[128]53 if (raidno == -1) {
[2211]54 mr_strcat(command, "linear");
[128]55 } else {
[2211]56 mr_strcat(command, "raid%d", raidno);
[128]57 }
[3892]58 mr_strcat(command, "\" " MDSTAT_FILE " > /dev/null 2> /dev/null");
[128]59 log_it("Is raid %d registered? Command = '%s'", raidno, command);
60 res = system(command);
61 paranoid_free(command);
[2211]62
[128]63 if (res) {
64 return (FALSE);
65 } else {
66 return (TRUE);
67 }
[1]68#endif
69}
70
71
72
73
74
75
76/**
77 * Search for @p device in @p disklist.
78 * @param disklist The disklist to search in.
79 * @param device The device to search for.
80 * @return The index number of @p device, or -1 if it does not exist.
81 */
82int
[128]83where_in_drivelist_is_drive(struct list_of_disks *disklist, char *device)
[1]84{
85
[128]86 /*@ int ************************************************************* */
87 int i = 0;
[1]88
[128]89 assert(disklist != NULL);
90 assert_string_is_neither_NULL_nor_zerolength(device);
[1]91
[128]92 for (i = 0; i < disklist->entries; i++) {
93 if (!strcmp(disklist->el[i].device, device)) {
94 break;
95 }
[1]96 }
[128]97 if (i == disklist->entries) {
98 return (-1);
99 } else {
100 return (i);
101 }
[1]102}
103
104
105
106
107
108
109
110
111/**
112 * Determine which RAID device is using a particular partition.
113 * @param raidlist The RAID information structure.
114 * @param device The partition to find out about.
115 * @return The index number of the RAID device using @p device, or -1 if there is none.
116 */
117int
[128]118which_raid_device_is_using_this_partition(struct raidlist_itself *raidlist,
119 char *device)
[1]120{
121#ifdef __FreeBSD__
122// FreeBSD-specific version of which_raid_device_is_using_this_partition()
[128]123 /*@ int ********************************************************* */
124 int i = 0;
[1]125
[128]126 for (i = 0; i < raidlist->entries; i++) {
127 bool thisone = FALSE;
128 int j, k, l;
129
130 for (j = 0; j < raidlist->el[i].plexes; ++j) {
131 for (k = 0; k < raidlist->el[i].plex[j].subdisks; ++k) {
132 for (l = 0; l < raidlist->disks.entries; ++l) {
133 if (!strcmp(raidlist->disks.el[l].device,
134 device) &&
135 !strcmp(raidlist->el[i].plex[j].sd[k].which_device,
136 raidlist->disks.el[l].name))
137 thisone = TRUE;
138 }
139 }
[1]140 }
[128]141
142 if (thisone) {
143 break;
144 }
[1]145 }
[128]146 if (i == raidlist->entries) {
147 return (-1);
148 } else {
149 return (i);
[1]150 }
151}
152
153#else
154// Linux-specific version of which_raid_device_is_using_this_partition()
155// and one other function which FreeBSD doesn't use
156
[128]157 int current_raiddev = 0;
[1]158
[128]159 assert_string_is_neither_NULL_nor_zerolength(device);
160 assert(raidlist != NULL);
[1]161
[128]162 for (current_raiddev = 0; current_raiddev < raidlist->entries;
163 current_raiddev++) {
164 if (where_in_drivelist_is_drive
165 (&raidlist->el[current_raiddev].data_disks, device) >= 0
166 || where_in_drivelist_is_drive(&raidlist->el[current_raiddev].
167 spare_disks, device) >= 0
168 || where_in_drivelist_is_drive(&raidlist->el[current_raiddev].
169 parity_disks, device) >= 0
170 || where_in_drivelist_is_drive(&raidlist->el[current_raiddev].
171 failed_disks, device) >= 0) {
172 break;
173 }
[1]174 }
[128]175 if (current_raiddev == raidlist->entries) {
176 return (-1);
177 } else {
178 return (current_raiddev);
179 }
[1]180}
181
182/**
183 * Write an @c int variable to a list of RAID variables.
184 * @param raidrec The RAID device record to write to.
185 * @param lino The variable index number to modify/create.
186 * @param label The label to write.
187 * @param value The value to write.
188 */
189void
[128]190write_variableINT_to_raid_var_line(struct raid_device_record *raidrec,
191 int lino, char *label, int value)
[1]192{
[128]193 /*@ buffers ***************************************************** */
[2515]194 char *sz_value = NULL;
[1]195
[128]196 assert(raidrec != NULL);
197 assert(label != NULL);
[1]198
[3185]199 mr_asprintf(sz_value, "%d", value);
[128]200 strcpy(raidrec->additional_vars.el[lino].label, label);
201 strcpy(raidrec->additional_vars.el[lino].value, sz_value);
[2515]202 mr_free(sz_value);
[1]203}
204#endif
205
206
207
208
209
210
211
212
213#ifdef __FreeBSD__
214/**
215 * Add a disk to a RAID plex.
216 * @param p The plex to add the device to.
217 * @param device_to_add The device to add to @p p.
218 */
[128]219void add_disk_to_raid_device(struct vinum_plex *p, char *device_to_add)
[1]220{
[128]221 strcpy(p->sd[p->subdisks].which_device, device_to_add);
222 ++p->subdisks;
[1]223
224}
225#else
226/**
227 * Add a disk to a RAID device.
228 * @param disklist The disklist to add the device to.
229 * @param device_to_add The device to add to @p disklist.
230 * @param index The index number of the disklist entry we're creating.
231 */
[128]232void add_disk_to_raid_device(struct list_of_disks *disklist,
233 char *device_to_add, int index)
[1]234{
[128]235 int items;
[1]236
[128]237 assert(disklist != NULL);
238 assert_string_is_neither_NULL_nor_zerolength(device_to_add);
239 items = disklist->entries;
240 strcpy(disklist->el[items].device, device_to_add);
241 disklist->el[items].index = index;
242 items++;
243 disklist->entries = items;
[3566]244 log_msg(3, "Adding device %s (%d)", device_to_add, index);
[1]245}
246#endif
247
248
249/**
[3879]250 * Save a disklist to a stream in raidtab format.
251 * @param listname One of "raid-disk", "spare-disk", "parity-disk", or "failed-disk".
252 * @param disklist The disklist to save to @p fout.
253 * @param fout The stream to write to.
254 */
255void save_disklist_to_file(const char *listname, struct list_of_disks *disklist, FILE * fout)
256{
257 int i;
258
259 assert_string_is_neither_NULL_nor_zerolength(listname);
260 assert(disklist != NULL);
261 assert(fout != NULL);
262
263 for (i = 0; i < disklist->entries; i++) {
264 fprintf(fout, " device %s\n", disklist->el[i].device);
265 fprintf(fout, " %-21s %d\n", listname, disklist->el[i].index);
266 }
267}
268/**
269 * Retrieve the next line from a raidtab stream.
270 * @param fin The file to read the input from.
271 * @param label Where to put the line's label.
272 * @param value Where to put the line's value.
273 * @return 0 if the line was read and stored successfully, 1 if we're at end of file.
274 */
275static int get_next_raidtab_line(FILE * fin, char **label, char **value)
276{
277 char *incoming = NULL;
278 char *p = NULL;
279 char *res = NULL;
280
281 assert(fin != NULL);
282
283 if (feof(fin)) {
284 return (1);
285 }
286
287 for (mr_getline(res, fin); !feof(fin); mr_getline(res, fin)) {
288 log_msg(10,"Found in raidtab line: %s",res);
289 incoming = mr_strip_spaces(res);
290 mr_free(res);
291 p = strchr(incoming, ' ');
292 if (strlen(incoming) < 3 || incoming[0] == '#' || !p) {
293 mr_free(incoming);
294 continue;
295 }
296 *(p++) = '\0';
297 while (*p == ' ') {
298 p++;
299 }
300 *label = incoming;
301 *value = p;
302 log_msg(10,"Found in raidtab pair: %s|%s",*label,*value);
303 return (0);
304 }
305 return (1);
306}
307
308
309/**
310 * Save the additional RAID variables to a stream.
311 * @param vars The RAID variable list to save.
312 * @param fout The FILE pointer to save them to.
313 */
314void
315save_additional_vars_to_file(struct additional_raid_variables *vars,
316 FILE * fout)
317{
318 int i;
319
320 assert(vars != NULL);
321 assert(fout != NULL);
322
323 for (i = 0; i < vars->entries; i++) {
324 fprintf(fout, " %-21s %s\n", vars->el[i].label,
325 vars->el[i].value);
326 }
327}
328
329
330
331
332/**
[1]333 * Save an individual RAID device record to a stream.
334 * @param raidrec The RAID device record to save.
335 * @param fout The stream to save it to.
336 */
[128]337void save_raidrec_to_file(struct
[1]338#ifdef __FreeBSD__
[128]339 vinum_volume
[1]340#else
[128]341 raid_device_record
[1]342#endif
[128]343 * raidrec, FILE * fout)
[1]344{
345#ifdef __FreeBSD__
[128]346 int i, j;
[3191]347 char *org = NULL;
[1]348
[128]349 fprintf(fout, "\nvolume %s\n", raidrec->volname);
350 for (i = 0; i < raidrec->plexes; ++i) {
351 switch (raidrec->plex[i].raidlevel) {
352 case -1:
[3191]353 mr_asprintf(org, "concat");
[128]354 break;
355 case 0:
[3191]356 mr_asprintf(org, "striped");
[128]357 break;
358 case 5:
[3191]359 mr_asprintf(org, "raid5");
[128]360 break;
[3893]361 default:
362 mr_asprintf(org, "Unknown RAID level %d", raidrec->plex[i].raidlevel);
363 fatal_error(org);
364 break;
[128]365 }
366 fprintf(fout, " plex org %s", org);
[3191]367 mr_free(org);
368
[128]369 if (raidrec->plex[i].raidlevel != -1) {
370 fprintf(fout, " %ik", raidrec->plex[i].stripesize);
371 }
372 fprintf(fout, "\n");
373
374 for (j = 0; j < raidrec->plex[i].subdisks; ++j) {
[3191]375 fprintf(fout, " sd drive %s size 0\n", raidrec->plex[i].sd[j].which_device);
[128]376 }
[1]377 }
[128]378#else
379 assert(raidrec != NULL);
380 assert(fout != NULL);
381
382 fprintf(fout, "raiddev %s\n", raidrec->raid_device);
[558]383 if (raidrec->raid_level == -2) {
384 fprintf(fout, " raid-level multipath\n");
385 } else if (raidrec->raid_level == -1) {
[128]386 fprintf(fout, " raid-level linear\n");
387 } else {
[3566]388 fprintf(fout, " raid-level %d\n", raidrec->raid_level);
[1]389 }
[3566]390 fprintf(fout, " nr-raid-disks %d\n", raidrec->data_disks.entries);
[558]391 if (raidrec->spare_disks.entries > 0) {
[3566]392 fprintf(fout, " nr-spare-disks %d\n", raidrec->spare_disks.entries);
[558]393 }
[128]394 if (raidrec->parity_disks.entries > 0) {
[3566]395 fprintf(fout, " nr-parity-disks %d\n", raidrec->parity_disks.entries);
[1]396 }
[3566]397 fprintf(fout, " persistent-superblock %d\n", raidrec->persistent_superblock);
[558]398 if (raidrec->chunk_size > -1) {
399 fprintf(fout, " chunk-size %d\n", raidrec->chunk_size);
400 }
401 if (raidrec->parity > -1) {
402 switch(raidrec->parity) {
403 case 0:
404 fprintf(fout, " parity-algorithm left-asymmetric\n");
405 break;
406 case 1:
407 fprintf(fout, " parity-algorithm right-asymmetric\n");
408 break;
409 case 2:
410 fprintf(fout, " parity-algorithm left-symmetric\n");
411 break;
412 case 3:
413 fprintf(fout, " parity-algorithm right-symmetric\n");
414 break;
415 default:
416 fatal_error("Unknown RAID parity algorithm.");
417 break;
418 }
419 }
[128]420 save_additional_vars_to_file(&raidrec->additional_vars, fout);
421 fprintf(fout, "\n");
422 save_disklist_to_file("raid-disk", &raidrec->data_disks, fout);
423 save_disklist_to_file("spare-disk", &raidrec->spare_disks, fout);
424 save_disklist_to_file("parity-disk", &raidrec->parity_disks, fout);
425 save_disklist_to_file("failed-disk", &raidrec->failed_disks, fout);
426 fprintf(fout, "\n");
[1]427#endif
428}
429
430/**
[3878]431 * Save a raidlist structure to disk in raidtab format.
432 * @param raidlist The raidlist to save.
433 * @param fname The file to save it to.
434 * @return 0, always.
435 * @bug Return value is redundant.
436 */
437int save_raidlist_to_raidtab(struct raidlist_itself *raidlist, char *fname)
438{
439 FILE *fout;
440 int current_raid_device;
441#ifdef __FreeBSD__
442 int i;
443#else
444// Linux
445#endif
446
447 assert(raidlist != NULL);
448 assert_string_is_neither_NULL_nor_zerolength(fname);
449
450 if (raidlist->entries <= 0) {
451 unlink(fname);
452 log_it("Deleting raidtab (no RAID devs anyway)");
453 return (0);
454 }
455 if (!(fout = fopen(fname, "w"))) {
456 log_OS_error("Failed to save raidlist");
457 return (1);
458 }
459 fprintf(fout, "# Generated by Mondo Rescue\n");
460
461#ifdef __FreeBSD__
462 for (i = 0; i < raidlist->disks.entries; ++i) {
463 fprintf(fout, "drive %s device %s\n", raidlist->disks.el[i].name,
464 raidlist->disks.el[i].device);
465 }
466 for (i = 0; i < (raidlist->spares.entries); ++i) {
467 fprintf(fout, "drive %s device %s hotspare\n",
468 raidlist->spares.el[i].name,
469 raidlist->spares.el[i].device);
470 }
471#endif
472
473 for (current_raid_device = 0; current_raid_device < raidlist->entries;
474 current_raid_device++) {
475 save_raidrec_to_file(&raidlist->el[current_raid_device], fout);
476 }
477 paranoid_fclose(fout);
478 return (0);
479}
480
481
482#ifndef __FreeBSD__
483/**
484 * Process a single line from the raidtab and store the results into @p raidrec.
485 * @param fin The stream to read the line from.
486 * @param raidrec The RAID device record to update.
487 * @param label Where to put the label processed.
488 * @param value Where to put the value processed.
489 */
490void
491process_raidtab_line(FILE * fin, struct raid_device_record *raidrec, char *label, char *value)
492{
[1]493
[3878]494 /*@ add mallocs * */
495 char *labelB = NULL;
496 char *valueB = NULL;
497
498 struct list_of_disks *disklist;
499 int index;
500 int v;
501
502 assert(fin != NULL);
503 assert(raidrec != NULL);
504 assert_string_is_neither_NULL_nor_zerolength(label);
505 assert(value != NULL);
506
507 if (!strcmp(label, "raid-level")) {
508 if (!strcmp(value, "multipath")) {
509 raidrec->raid_level = -2;
510 } else if (!strcmp(value, "linear")) {
511 raidrec->raid_level = -1;
512 } else {
513 raidrec->raid_level = atoi(value);
514 }
515 log_msg(4,"Found raid level %d",raidrec->raid_level);
516 } else if (!strcmp(label, "nr-raid-disks")) { /* ignore it */
517 } else if (!strcmp(label, "nr-spare-disks")) { /* ignore it */
518 } else if (!strcmp(label, "nr-parity-disks")) { /* ignore it */
519 } else if (!strcmp(label, "nr-failed-disks")) { /* ignore it */
520 } else if (!strcmp(label, "persistent-superblock")) {
521 raidrec->persistent_superblock = atoi(value);
522 } else if (!strcmp(label, "chunk-size")) {
523 raidrec->chunk_size = atoi(value);
524 } else if (!strcmp(label, "parity-algorithm")) {
525 if (!strcmp(value, "left-asymmetric")) {
526 raidrec->parity = 0;
527 } else if (!strcmp(value, "right-asymmetric")) {
528 raidrec->parity = 1;
529 } else if (!strcmp(value, "left-symmetric")) {
530 raidrec->parity = 2;
531 } else if (!strcmp(value, "right-symmetric")) {
532 raidrec->parity = 3;
533 } else {
534 log_msg(1, "Unknown RAID parity algorithm '%s'", value);
535 }
536 log_msg(4,"Found raid parity %d",raidrec->parity);
537 } else if (!strcmp(label, "device")) {
538 get_next_raidtab_line(fin, &labelB, &valueB);
539 if (!strcmp(labelB, "raid-disk")) {
540 disklist = &raidrec->data_disks;
541 } else if (!strcmp(labelB, "spare-disk")) {
542 disklist = &raidrec->spare_disks;
543 } else if (!strcmp(labelB, "parity-disk")) {
544 disklist = &raidrec->parity_disks;
545 } else if (!strcmp(labelB, "failed-disk")) {
546 disklist = &raidrec->failed_disks;
547 } else {
548 disklist = NULL;
549 }
550 if (!disklist) {
551 log_it("Ignoring '%s %s' pair of disk %s", labelB, valueB, label);
552 } else {
553 index = atoi(valueB);
554 add_disk_to_raid_device(disklist, value, index);
555 }
556 mr_free(labelB);
557 } else {
558 v = raidrec->additional_vars.entries;
559 strcpy(raidrec->additional_vars.el[v].label, label);
560 strcpy(raidrec->additional_vars.el[v].value, value);
561 log_msg(4,"Found additional raid pair #%d: %s / %s",v,raidrec->additional_vars.el[v].label,raidrec->additional_vars.el[v].value);
562 v++;
563 raidrec->additional_vars.entries = v;
564 }
565}
566#endif
567
568
569
570
[1]571/**
572 * Load a raidtab file into a raidlist structure.
573 * @param raidlist The raidlist to fill.
574 * @param fname The file to read from.
575 * @return 0 for success, 1 for failure.
576 */
577#ifdef __FreeBSD__
[3566]578int load_raidtab_into_raidlist(struct raidlist_itself *raidlist, char *fname)
[1]579{
[128]580 FILE *fin;
581 int items;
[1]582
[128]583 raidlist->spares.entries = 0;
584 raidlist->disks.entries = 0;
585 if (length_of_file(fname) < 5) {
586 log_it("Raidtab is very small or non-existent. Ignoring it.");
587 raidlist->entries = 0;
588 return (0);
[1]589 }
[128]590 if (!(fin = fopen(fname, "r"))) {
591 log_it("Cannot open raidtab");
592 return (1);
[1]593 }
[128]594 items = 0;
595 log_it("Loading raidtab...");
596 while (!feof(fin)) {
597 int argc;
598 char **argv = get_next_vinum_conf_line(fin, &argc);
599 if (!argv)
600 break;
601 if (!strcmp(argv[0], "drive")) {
602 char *drivename, *devname;
603 if (argc < 4)
604 continue;
605 drivename = argv[1];
606 devname = get_option_val(argc, argv, "device");
607 if (!devname)
608 continue;
[1]609
[128]610 if (get_option_state(argc, argv, "hotspare")) {
[3191]611 strcpy(raidlist->spares.el[raidlist->spares.entries].name, drivename);
[3566]612 strcpy(raidlist->spares.el[raidlist->spares.entries].device, devname);
613 raidlist->spares.el[raidlist->spares.entries].index = raidlist->disks.entries;
[128]614 raidlist->spares.entries++;
615 } else {
[3191]616 strcpy(raidlist->disks.el[raidlist->disks.entries].name, drivename);
617 strcpy(raidlist->disks.el[raidlist->disks.entries].device, devname);
[3566]618 raidlist->disks.el[raidlist->disks.entries].index = raidlist->disks.entries;
[128]619 raidlist->disks.entries++;
620 }
621 } else if (!strcmp(argv[0], "volume")) {
622 char *volname;
623 if (argc < 2)
624 continue;
625 volname = argv[1];
626 strcpy(raidlist->el[raidlist->entries].volname, volname);
627 raidlist->el[raidlist->entries].plexes = 0;
628 raidlist->entries++;
629 } else if (!strcmp(argv[0], "plex")) {
630 int raidlevel, stripesize;
631 char *org = 0;
632 char **tmp = 0;
633 if (argc < 3)
634 continue;
635 org = get_option_val(argc, argv, "org");
636 if (!org)
637 continue;
638 if (strcmp(org, "concat")) {
639 tmp = get_option_vals(argc, argv, "org", 2);
640 if (tmp && tmp[1]) {
641 stripesize = (int) (size_spec(tmp[1]) / 1024);
642 } else
643 stripesize = 279;
644 } else
645 stripesize = 0;
[1]646
[128]647 if (!strcmp(org, "concat")) {
648 raidlevel = -1;
649 } else if (!strcmp(org, "striped")) {
650 raidlevel = 0;
651 } else if (!strcmp(org, "raid5")) {
652 raidlevel = 5;
653 } else
654 continue;
655
656 raidlist->el[raidlist->entries - 1].plex
657 [raidlist->el[raidlist->entries - 1].plexes].raidlevel =
658 raidlevel;
659 raidlist->el[raidlist->entries -
660 1].plex[raidlist->el[raidlist->entries -
661 1].plexes].stripesize =
662 stripesize;
663 raidlist->el[raidlist->entries -
664 1].plex[raidlist->el[raidlist->entries -
665 1].plexes].subdisks = 0;
666 raidlist->el[raidlist->entries - 1].plexes++;
667 } else if ((!strcmp(argv[0], "sd"))
668 || (!strcmp(argv[0], "subdisk"))) {
669 char *drive = 0;
670 if (argc < 3)
671 continue;
672 drive = get_option_val(argc, argv, "drive");
673 if (!drive)
674 continue;
675
676 strcpy(raidlist->el[raidlist->entries - 1].plex
677 [raidlist->el[raidlist->entries - 1].plexes - 1].sd
678 [raidlist->el[raidlist->entries - 1].plex
679 [raidlist->el[raidlist->entries - 1].plexes -
680 1].subdisks].which_device, drive);
681 raidlist->el[raidlist->entries -
682 1].plex[raidlist->el[raidlist->entries -
683 1].plexes - 1].subdisks++;
684 }
[1]685 }
[128]686 fclose(fin);
687 log_it("Raidtab loaded successfully.");
[3191]688 log_it("%d RAID devices in raidtab", raidlist->entries);
[128]689 return (0);
[1]690}
691
692
693#else
694
[3191]695int load_raidtab_into_raidlist(struct raidlist_itself *raidlist, char *fname) {
696
697 FILE *fin = NULL;
698 char *label = NULL;
699 char *value = NULL;
[3566]700 int items = 0;
701 int v = 0;
[1]702
[128]703 assert(raidlist != NULL);
704 assert_string_is_neither_NULL_nor_zerolength(fname);
[1]705
[128]706 if (length_of_file(fname) < 5) {
707 log_it("Raidtab is very small or non-existent. Ignoring it.");
708 raidlist->entries = 0;
709 return (0);
[1]710 }
[128]711 if (!(fin = fopen(fname, "r"))) {
712 log_it("Cannot open raidtab");
713 return (1);
[1]714 }
[128]715 log_it("Loading raidtab...");
[3566]716 get_next_raidtab_line(fin, &label, &value);
[128]717 while (!feof(fin)) {
718 log_msg(1, "Looking for raid record #%d", items);
719 initialize_raidrec(&raidlist->el[items]);
720 v = 0;
721 /* find the 'raiddev' entry, indicating the start of the block of info */
722 while (!feof(fin) && strcmp(label, "raiddev")) {
723 strcpy(raidlist->el[items].additional_vars.el[v].label, label);
724 strcpy(raidlist->el[items].additional_vars.el[v].value, value);
[3566]725 mr_free(label);
[2989]726 log_msg(2,"Found raidtab entry Label: %s Value: %s",raidlist->el[items].additional_vars.el[v].label,raidlist->el[items].additional_vars.el[v].value);
[128]727 v++;
[3566]728 get_next_raidtab_line(fin, &label, &value);
[128]729 }
[3566]730
[128]731 raidlist->el[items].additional_vars.entries = v;
732 if (feof(fin)) {
733 log_msg(1, "No more records.");
734 continue;
735 }
736 log_msg(2, "Record #%d (%s) found", items, value);
737 strcpy(raidlist->el[items].raid_device, value);
[3566]738 mr_free(label);
739 for (get_next_raidtab_line(fin, &label, &value); !feof(fin) && strcmp(label, "raiddev"); get_next_raidtab_line(fin, &label, &value)) {
[128]740 process_raidtab_line(fin, &raidlist->el[items], label, value);
[3566]741 mr_free(label);
[128]742 }
743 items++;
[1]744 }
[3566]745 mr_free(label);
[128]746 paranoid_fclose(fin);
747 raidlist->entries = items;
748 log_msg(1, "Raidtab loaded successfully.");
749 log_msg(1, "%d RAID devices in raidtab", items);
750 return (0);
[1]751}
752#endif
753
754
755
756#ifdef __FreeBSD__
757/**
758 * Add a new plex to a volume. The index of the plex will be <tt>v-\>plexes - 1</tt>.
759 * @param v The volume to operate on.
760 * @param raidlevel The RAID level of the new plex.
761 * @param stripesize The stripe size (chunk size) of the new plex.
762 */
[128]763void add_plex_to_volume(struct vinum_volume *v, int raidlevel,
764 int stripesize)
[1]765{
[128]766 v->plex[v->plexes].raidlevel = raidlevel;
767 v->plex[v->plexes].stripesize = stripesize;
768 v->plex[v->plexes].subdisks = 0;
769 ++v->plexes;
[1]770}
771
772/**
773 * For internal use only.
774 */
[128]775char **get_next_vinum_conf_line(FILE * f, int *argc)
[1]776{
[128]777 int cnt = 0;
778 static char *argv[64];
779 char **ap;
[3191]780 char *line = NULL;
[3060]781
[3191]782 mr_getline(line, f);
783 if (feof(f)) {
[128]784 log_it("[GNVCL] Uh... I reached the EOF.");
785 return 0;
[1]786 }
787
[128]788 for (ap = argv; (*ap = strsep(&line, " \t")) != NULL;)
789 if (**ap != '\0') {
790 if (++ap >= &argv[64])
791 break;
792 cnt++;
793 }
[3191]794 mr_free(line);
[1]795
[128]796 if (strchr(argv[cnt - 1], '\n')) {
797 *(strchr(argv[cnt - 1], '\n')) = '\0';
798 }
799
800 if (argc)
801 *argc = cnt;
802 return argv;
[1]803}
804
805/**
806 * For internal use only.
807 */
[128]808char *get_option_val(int argc, char **argv, char *option)
[1]809{
[128]810 int i;
811 for (i = 0; i < (argc - 1); ++i) {
812 if (!strcmp(argv[i], option)) {
813 return argv[i + 1];
814 }
[1]815 }
[128]816 return 0;
[1]817}
818
819/**
820 * For internal use only.
821 */
[128]822char **get_option_vals(int argc, char **argv, char *option, int nval)
[1]823{
[128]824 int i, j;
825 static char **ret;
826 ret = (char **) malloc(nval * sizeof(char *));
827 for (i = 0; i < (argc - nval); ++i) {
828 if (!strcmp(argv[i], option)) {
829 for (j = 0; j < nval; ++j) {
830 ret[j] = (char *) malloc(strlen(argv[i + j + 1]) + 1);
831 strcpy(ret[j], argv[i + j + 1]);
832 }
833 return ret;
834 }
[1]835 }
[128]836 return 0;
[1]837}
838
839/**
840 * For internal use only.
841 */
[128]842bool get_option_state(int argc, char **argv, char *option)
[1]843{
[128]844 int i;
845 for (i = 0; i < argc; ++i)
846 if (!strcmp(argv[i], option))
847 return TRUE;
[1]848
[128]849 return FALSE;
[1]850}
851
852/**
853 * Taken from Vinum source -- for internal use only.
854 */
855long long size_spec(char *spec)
856{
[128]857 u_int64_t size;
858 char *s;
859 int sign = 1; /* -1 if negative */
[1]860
[128]861 size = 0;
862 if (spec != NULL) { /* we have a parameter */
863 s = spec;
864 if (*s == '-') { /* negative, */
865 sign = -1;
866 s++; /* skip */
867 }
868 if ((*s >= '0') && (*s <= '9')) { /* it's numeric */
869 while ((*s >= '0') && (*s <= '9')) /* it's numeric */
870 size = size * 10 + *s++ - '0'; /* convert it */
871 switch (*s) {
872 case '\0':
873 return size * sign;
[1]874
[128]875 case 'B':
876 case 'b':
877 case 'S':
878 case 's':
879 return size * sign * 512;
[1]880
[128]881 case 'K':
882 case 'k':
883 return size * sign * 1024;
[1]884
[128]885 case 'M':
886 case 'm':
887 return size * sign * 1024 * 1024;
[1]888
[128]889 case 'G':
890 case 'g':
891 return size * sign * 1024 * 1024 * 1024;
[1]892
[128]893 case 'T':
894 case 't':
895 log_it
896 ("Ok, I'm scared... Someone did a TERABYTE+ size-spec");
897 return size * sign * 1024 * 1024 * 1024 * 1024;
[1]898
[128]899 case 'P':
900 case 'p':
901 log_it
902 ("If I was scared last time, I'm freaked out now. Someone actually has a PETABYTE?!?!?!?!");
903 return size * sign * 1024 * 1024 * 1024 * 1024 * 1024;
[1]904
[128]905 case 'E':
906 case 'e':
907 log_it
908 ("Okay, I'm REALLY freaked out. Who could devote a whole EXABYTE to their data?!?!");
909 return size * sign * 1024 * 1024 * 1024 * 1024 * 1024 *
910 1024;
[1]911
[128]912 case 'Z':
913 case 'z':
914 log_it
915 ("WHAT!?!? A ZETABYTE!?!? You've GOT to be kidding me!!!");
916 return size * sign * 1024 * 1024 * 1024 * 1024 * 1024 *
917 1024 * 1024;
918
919 case 'Y':
920 case 'y':
921 log_it
922 ("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?!?!");
923 popup_and_OK
[541]924 ("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 :-)");
[128]925 return size * sign * 1024 * 1024 * 1024 * 1024 * 1024 *
926 1024 * 1024 * 1024;
927 }
928 }
[1]929 }
[128]930 return size * sign;
[1]931}
932
933#endif
934
935
936
937
[2982]938int parse_mdstat(char *mdstat_fname, struct raidlist_itself *raidlist, char *device_prefix) {
[128]939
[2982]940const char delims[] = " ";
[558]941
[2982]942FILE *fin = NULL;
943int res = 0, row, i, index_min;
944int v = 0;
[3893]945size_t lastpos = 0;
[2982]946size_t len = 0;
947char *token = NULL;
948char *string = NULL;
949char *cmd = NULL;
950char *pos = NULL;
951char type;
952char *strtmp = NULL;
953char *strtmp2 = NULL;
[558]954
[2982]955// open file
956if (!(fin = fopen(mdstat_fname, "r"))) {
[3380]957 log_msg(1, "Could not open %s.", mdstat_fname);
[2982]958 return 1;
959}
960// initialise record, build progress and row counters
961raidlist->entries = 0;
962raidlist->el[raidlist->entries].progress = 999;
963row = 1;
964// skip first output row - contains registered RAID levels
965res = getline(&strtmp2, &len, fin);
966mr_free(strtmp2);
967// parse the rest
968while ( !feof_unlocked(fin) ) {
969 res = getline(&string, &len, fin);
[3380]970 log_msg(8, "mdstat line '%s' read.", string);
[2982]971 if (res <= 0) break;
972 // trim spaces
973 strip_spaces(string);
[3380]974 log_msg(8, "mdstat line 2 '%s' read.", string);
[2982]975 // if we have newline after only spaces, this is a blank line, update
976 // counters, otherwise do normal parsing
977 if (!strcmp(string,"")) {
978 row = 1;
979 raidlist->entries++;
980 raidlist->el[raidlist->entries].progress = 999;
[558]981 } else {
[2982]982 switch (row) {
983 case 1: // device information
984 // check whether last line of record and if so skip
[3380]985 log_msg(8, "This is the device line");
[2982]986 pos = strcasestr(string, "unused devices: ");
987 if (pos != NULL) {
988 break;
989 }
990 // tokenise string
991 token = mr_strtok(string, delims, &lastpos);
992 if (token == NULL) {
993 // should not happen !
994 break;
995 }
996 // get RAID device name
[3185]997 mr_asprintf(strtmp,"%s%s", device_prefix, token);
[2982]998 strncpy(raidlist->el[raidlist->entries].raid_device, strtmp, 63);
[3060]999 raidlist->el[raidlist->entries].raid_device[63] = '\0';
[2982]1000 mr_free(strtmp);
1001 mr_free(token);
1002 // store the UUID value in the additional_vars structure
1003 v = raidlist->el[raidlist->entries].additional_vars.entries;
1004 strcpy(raidlist->el[raidlist->entries].additional_vars.el[v].label, "UUID");
[3185]1005 mr_asprintf(cmd,"mdadm --detail %s | grep UUID | cut -d: -f2- | sed 's/^ *//'", raidlist->el[raidlist->entries].raid_device);
[3610]1006 strtmp = call_program_and_get_last_line_of_output(cmd);
[2982]1007 strcpy(raidlist->el[raidlist->entries].additional_vars.el[v].value, strtmp);
1008 mr_free(strtmp);
1009 v++;
[2989]1010 // store the Version value in the additional_vars structure
1011 strcpy(raidlist->el[raidlist->entries].additional_vars.el[v].label, "Version");
[3185]1012 mr_asprintf(cmd,"mdadm --detail %s | grep Version | cut -d: -f2- | sed 's/^ *//'", raidlist->el[raidlist->entries].raid_device);
[3610]1013 strtmp = call_program_and_get_last_line_of_output(cmd);
[2989]1014 strcpy(raidlist->el[raidlist->entries].additional_vars.el[v].value, strtmp);
1015 mr_free(strtmp);
1016 v++;
[2982]1017 raidlist->el[raidlist->entries].additional_vars.entries = v;
1018 // skip ':' and status
[3154]1019 token = mr_strtok(string, delims, &lastpos);
[2982]1020 if (token == NULL) {
1021 // should not happen !
1022 break;
1023 }
1024 mr_free(token);
[3154]1025 token = mr_strtok(string, delims, &lastpos);
[2982]1026 if (token == NULL) {
1027 // should not happen !
1028 break;
1029 }
1030 if (!strcmp(token, "inactive")) {
[3380]1031 log_msg(1, "RAID device '%s' inactive.", raidlist->el[raidlist->entries].raid_device);
[2982]1032 mr_free(string);
1033 mr_free(token);
1034 return 1;
1035 }
1036 mr_free(token);
[559]1037
[2982]1038 // get RAID level
[3154]1039 token = mr_strtok(string, delims, &lastpos);
[2982]1040 if (token == NULL) {
1041 // should not happen !
1042 break;
1043 }
1044 // skip potential auto-read-only entry
1045 if (!strcmp(token, "(auto-read-only)")) {
1046 mr_free(token);
1047 token = mr_strtok (string, delims, &lastpos);
1048 if (token == NULL) {
1049 // should not happen !
1050 break;
1051 }
1052 }
1053 if (!strcmp(token, "multipath")) {
1054 raidlist->el[raidlist->entries].raid_level = -2;
1055 } else if (!strcmp(token, "linear")) {
1056 raidlist->el[raidlist->entries].raid_level = -1;
1057 } else if (!strcmp(token, "raid0")) {
1058 raidlist->el[raidlist->entries].raid_level = 0;
1059 } else if (!strcmp(token, "raid1")) {
1060 raidlist->el[raidlist->entries].raid_level = 1;
1061 } else if (!strcmp(token, "raid4")) {
1062 raidlist->el[raidlist->entries].raid_level = 4;
1063 } else if (!strcmp(token, "raid5")) {
1064 raidlist->el[raidlist->entries].raid_level = 5;
1065 } else if (!strcmp(token, "raid6")) {
1066 raidlist->el[raidlist->entries].raid_level = 6;
1067 } else if (!strcmp(token, "raid10")) {
1068 raidlist->el[raidlist->entries].raid_level = 10;
1069 } else {
[3380]1070 log_msg(1, "Unknown RAID level '%s'", token);
[2982]1071 mr_free(string);
1072 mr_free(token);
1073 return 1;
1074 }
1075 mr_free(token);
[559]1076
[2982]1077 // get RAID devices (type, index, device)
1078 // Note: parity disk for RAID4 is last normal disk, there is no '(P)'
1079 raidlist->el[raidlist->entries].data_disks.entries = 0;
1080 raidlist->el[raidlist->entries].spare_disks.entries = 0;
1081 raidlist->el[raidlist->entries].failed_disks.entries = 0;
1082 while((token = mr_strtok (string, delims, &lastpos))) {
1083 if ((pos = strstr(token, "("))) {
[3191]1084 type = *(pos+1);
[2982]1085 } else {
[3191]1086 type = ' ';
[2982]1087 }
1088 pos = strstr(token, "[");
1089 *pos = '\0';
1090 switch(type) {
1091 case ' ': // normal data disks
[3191]1092 raidlist->el[raidlist->entries].data_disks.el[raidlist->el[raidlist->entries].data_disks.entries].index = atoi(pos + 1);
1093 mr_asprintf(strtmp,"%s%s", device_prefix, token);
1094 strcpy(raidlist->el[raidlist->entries].data_disks.el[raidlist->el[raidlist->entries].data_disks.entries].device, strtmp);
1095 mr_free(strtmp);
1096 raidlist->el[raidlist->entries].data_disks.entries++;
1097 break;
[2982]1098 case 'S': // spare disks
[3191]1099 raidlist->el[raidlist->entries].spare_disks.el[raidlist->el[raidlist->entries].spare_disks.entries].index = atoi(pos + 1);
1100 mr_asprintf(strtmp,"%s%s", device_prefix, token);
1101 strcpy(raidlist->el[raidlist->entries].spare_disks.el[raidlist->el[raidlist->entries].spare_disks.entries].device, strtmp);
1102 mr_free(strtmp);
1103 raidlist->el[raidlist->entries].spare_disks.entries++;
1104 break;
[2982]1105 case 'F': // failed disks
[3191]1106 raidlist->el[raidlist->entries].failed_disks.el[raidlist->el[raidlist->entries].failed_disks.entries].index = atoi(pos + 1);
1107 mr_asprintf(strtmp,"%s%s", device_prefix, token);
1108 strcpy(raidlist->el[raidlist->entries].failed_disks.el[raidlist->el[raidlist->entries].failed_disks.entries].device, strtmp);
1109 mr_free(strtmp);
1110 raidlist->el[raidlist->entries].failed_disks.entries++;
1111 log_it("At least one failed disk found in RAID array.\n");
1112 break;
[2982]1113 default: // error
[3380]1114 log_msg(1, "Unknown device type '%c'", type);
[3191]1115 mr_free(string);
1116 mr_free(token);
1117 return 1;
1118 break;
[2982]1119 }
1120 mr_free(token);
1121 }
1122
1123 // adjust index for each device so that it starts with 0 for every type
1124 index_min = 99;
1125 for (i=0; i<raidlist->el[raidlist->entries].data_disks.entries;i++) {
1126 if (raidlist->el[raidlist->entries].data_disks.el[i].index < index_min) {
[3191]1127 index_min = raidlist->el[raidlist->entries].data_disks.el[i].index;
[2982]1128 }
1129 }
1130 if (index_min > 0) {
1131 for (i=0; i<raidlist->el[raidlist->entries].data_disks.entries;i++) {
[3191]1132 raidlist->el[raidlist->entries].data_disks.el[i].index = raidlist->el[raidlist->entries].data_disks.el[i].index - index_min;
[2982]1133 }
1134 }
1135 index_min = 99;
1136 for (i=0; i<raidlist->el[raidlist->entries].spare_disks.entries;i++) {
1137 if (raidlist->el[raidlist->entries].spare_disks.el[i].index < index_min) {
[3191]1138 index_min = raidlist->el[raidlist->entries].spare_disks.el[i].index;
[2982]1139 }
1140 }
1141 if (index_min > 0) {
1142 for (i=0; i<raidlist->el[raidlist->entries].spare_disks.entries;i++) {
[3191]1143 raidlist->el[raidlist->entries].spare_disks.el[i].index = raidlist->el[raidlist->entries].spare_disks.el[i].index - index_min;
[2982]1144 }
1145 }
1146 index_min = 99;
1147 for (i=0; i<raidlist->el[raidlist->entries].failed_disks.entries;i++) {
1148 if (raidlist->el[raidlist->entries].failed_disks.el[i].index < index_min) {
[3191]1149 index_min = raidlist->el[raidlist->entries].failed_disks.el[i].index;
[2982]1150 }
1151 }
1152 if (index_min > 0) {
1153 for (i=0; i<raidlist->el[raidlist->entries].failed_disks.entries;i++) {
[3191]1154 raidlist->el[raidlist->entries].failed_disks.el[i].index = raidlist->el[raidlist->entries].failed_disks.el[i].index - index_min;
[2982]1155 }
1156 }
1157 break;
1158 case 2: // config information
1159 // check for persistent super block
1160 if (strcasestr(string, "super non-persistent")) {
1161 raidlist->el[raidlist->entries].persistent_superblock = 0;
1162 } else {
1163 raidlist->el[raidlist->entries].persistent_superblock = 1;
1164 }
1165 // extract chunk size
1166 if (!(pos = strcasestr(string, "k chunk"))) {
1167 raidlist->el[raidlist->entries].chunk_size = -1;
1168 } else {
1169 while (*pos != ' ') {
[3191]1170 pos -= 1;
1171 if (pos < string) {
1172 log_it("String underflow!\n");
1173 mr_free(string);
1174 return 1;
1175 }
[2982]1176 }
1177 raidlist->el[raidlist->entries].chunk_size = atoi(pos + 1);
1178 }
1179 // extract parity if present
1180 if ((pos = strcasestr(string, "algorithm"))) {
1181 raidlist->el[raidlist->entries].parity = atoi(pos + 9);
1182 } else {
1183 raidlist->el[raidlist->entries].parity = -1;
1184 }
1185 break;
1186 case 3: // optional build status information
1187 if (!(pos = strchr(string, '\%'))) {
1188 if (strcasestr(string, "delayed")) {
[3191]1189 raidlist->el[raidlist->entries].progress = -1; // delayed (therefore, stuck at 0%)
[2982]1190 } else {
[3191]1191 raidlist->el[raidlist->entries].progress = 999; // not found
[2982]1192 }
1193 } else {
1194 while (*pos != ' ') {
[3191]1195 pos -= 1;
1196 if (pos < string) {
1197 printf("ERROR: String underflow!\n");
1198 mr_free(string);
1199 return 1;
1200 }
[2982]1201 }
1202 raidlist->el[raidlist->entries].progress = atoi(pos);
1203 }
1204 break;
[3191]1205 default: // error or IN PROGRESS
[2982]1206 if (raidlist->el[raidlist->entries].progress != -1 &&
1207 raidlist->el[raidlist->entries].progress != 999) {
[3380]1208 log_msg(1, "Row %d should not occur in record!", row);
[2982]1209 }
1210 break;
[3191]1211 }
1212 row++;
[558]1213 }
[2982]1214 // free string
1215 mr_free(string);
1216}
1217// close file
1218fclose(fin);
1219// return success
1220return 0;
[558]1221
[1]1222}
1223
1224
1225
[558]1226
[2982]1227int create_raidtab_from_mdstat(char *mdstat_fname,char *raidtab_fname)
[1]1228{
[128]1229 struct raidlist_itself *raidlist;
1230 int retval = 0;
[1]1231
[128]1232 raidlist = malloc(sizeof(struct raidlist_itself));
[1]1233
[558]1234 // FIXME: Prefix '/dev/' should really be dynamic!
[2982]1235 if (parse_mdstat(mdstat_fname,raidlist, "/dev/")) {
1236 log_to_screen("Sorry, cannot read %s", mdstat_fname);
[128]1237 return (1);
1238 }
1239
1240 retval += save_raidlist_to_raidtab(raidlist, raidtab_fname);
1241 return (retval);
[1]1242}
1243
1244
1245
1246/* @} - end of raidGroup */
Note: See TracBrowser for help on using the repository browser.