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source: MondoRescue/branches/3.0/mondo/src/common/libmondo-raid.c@ 3043

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Last change on this file since 3043 was 3043, checked in by Bruno Cornec, 12 years ago
Add support for missing mkdtemp such as Red Hat 6.2
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File size: 34.4 KB

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1	/* libmondo-raid.c subroutines for handling RAID
2	$Id: libmondo-raid.c 3043 2012-10-07 19:44:36Z bruno $
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"
13	#include "libmondo-gui-EXT.h"
14	#include "libmondo-files-EXT.h"
15	#include "libmondo-tools-EXT.h"
16	#include "libmondo-string-EXT.h"
17	#include "libmondo-fork-EXT.h"
18	#include "lib-common-externs.h"
19	#include "libmondo-raid.h"
20	#include "mr_mem.h"
21	#include "mr_str.h"
22
23	#ifdef __FreeBSD__
24	/* Nonstandard library functions: */
25	extern void errx(int exitval, const char *fmt, ...);
26	extern char strsep(char stringp, const char delim);
27	#endif
28
29	/@unused@/
30	//static char cvsid[] = "$Id: libmondo-raid.c 3043 2012-10-07 19:44:36Z bruno $";
31
32
33	/**
34	* @addtogroup raidGroup
35	* @{
36	*/
37	/**
38	* See if a particular RAID level is supported by the kernel.
39	* @param raidno The RAID level (-1 through 5) to check. -1 means "linear" under Linux and
40	* "concatenated" under FreeBSD. It's really the same thing, just different wording.
41	* @return TRUE if it's supported, FALSE if not.
42	*/
43	bool is_this_raid_personality_registered(int raidno)
44	{
45	#ifdef __FreeBSD__
46	return ((raidno == -1) \|\| (raidno == 0) \|\| (raidno == 1)
47	\|\| (raidno == 5)) ? TRUE : FALSE;
48	#else
49	/@ buffer ********************************************************* */
50	char *command = NULL;
51	int res;
52
53	mr_asprintf(&command, "grep \"");
54	if (raidno == -1) {
55	mr_strcat(command, "linear");
56	} else {
57	mr_strcat(command, "raid%d", raidno);
58	}
59	mr_strcat(command, "\" /proc/mdstat > /dev/null 2> /dev/null");
60	log_it("Is raid %d registered? Command = '%s'", raidno, command);
61	res = system(command);
62	paranoid_free(command);
63
64	if (res) {
65	return (FALSE);
66	} else {
67	return (TRUE);
68	}
69	#endif
70	}
71
72
73
74
75
76
77	/**
78	* Search for @p device in @p disklist.
79	* @param disklist The disklist to search in.
80	* @param device The device to search for.
81	* @return The index number of @p device, or -1 if it does not exist.
82	*/
83	int
84	where_in_drivelist_is_drive(struct list_of_disks disklist, char device)
85	{
86
87	/@ int ************************************************************ */
88	int i = 0;
89
90	assert(disklist != NULL);
91	assert_string_is_neither_NULL_nor_zerolength(device);
92
93	for (i = 0; i < disklist->entries; i++) {
94	if (!strcmp(disklist->el[i].device, device)) {
95	break;
96	}
97	}
98	if (i == disklist->entries) {
99	return (-1);
100	} else {
101	return (i);
102	}
103	}
104
105
106
107
108
109
110
111
112	/**
113	* Determine which RAID device is using a particular partition.
114	* @param raidlist The RAID information structure.
115	* @param device The partition to find out about.
116	* @return The index number of the RAID device using @p device, or -1 if there is none.
117	*/
118	int
119	which_raid_device_is_using_this_partition(struct raidlist_itself *raidlist,
120	char *device)
121	{
122	#ifdef __FreeBSD__
123	// FreeBSD-specific version of which_raid_device_is_using_this_partition()
124	/@ int ******************************************************** */
125	int i = 0;
126
127	for (i = 0; i < raidlist->entries; i++) {
128	bool thisone = FALSE;
129	int j, k, l;
130
131	for (j = 0; j < raidlist->el[i].plexes; ++j) {
132	for (k = 0; k < raidlist->el[i].plex[j].subdisks; ++k) {
133	for (l = 0; l < raidlist->disks.entries; ++l) {
134	if (!strcmp(raidlist->disks.el[l].device,
135	device) &&
136	!strcmp(raidlist->el[i].plex[j].sd[k].which_device,
137	raidlist->disks.el[l].name))
138	thisone = TRUE;
139	}
140	}
141	}
142
143	if (thisone) {
144	break;
145	}
146	}
147	if (i == raidlist->entries) {
148	return (-1);
149	} else {
150	return (i);
151	}
152	}
153
154	#else
155	// Linux-specific version of which_raid_device_is_using_this_partition()
156	// and one other function which FreeBSD doesn't use
157
158	int current_raiddev = 0;
159
160	assert_string_is_neither_NULL_nor_zerolength(device);
161	assert(raidlist != NULL);
162
163	for (current_raiddev = 0; current_raiddev < raidlist->entries;
164	current_raiddev++) {
165	if (where_in_drivelist_is_drive
166	(&raidlist->el[current_raiddev].data_disks, device) >= 0
167	\|\| where_in_drivelist_is_drive(&raidlist->el[current_raiddev].
168	spare_disks, device) >= 0
169	\|\| where_in_drivelist_is_drive(&raidlist->el[current_raiddev].
170	parity_disks, device) >= 0
171	\|\| where_in_drivelist_is_drive(&raidlist->el[current_raiddev].
172	failed_disks, device) >= 0) {
173	break;
174	}
175	}
176	if (current_raiddev == raidlist->entries) {
177	return (-1);
178	} else {
179	return (current_raiddev);
180	}
181	}
182
183	/**
184	* Write an @c int variable to a list of RAID variables.
185	* @param raidrec The RAID device record to write to.
186	* @param lino The variable index number to modify/create.
187	* @param label The label to write.
188	* @param value The value to write.
189	*/
190	void
191	write_variableINT_to_raid_var_line(struct raid_device_record *raidrec,
192	int lino, char *label, int value)
193	{
194	/@ buffers **************************************************** */
195	char *sz_value = NULL;
196
197	assert(raidrec != NULL);
198	assert(label != NULL);
199
200	mr_asprintf(&sz_value, "%d", value);
201	strcpy(raidrec->additional_vars.el[lino].label, label);
202	strcpy(raidrec->additional_vars.el[lino].value, sz_value);
203	mr_free(sz_value);
204	}
205	#endif
206
207
208
209
210
211
212
213
214	#ifdef __FreeBSD__
215	/**
216	* Add a disk to a RAID plex.
217	* @param p The plex to add the device to.
218	* @param device_to_add The device to add to @p p.
219	*/
220	void add_disk_to_raid_device(struct vinum_plex p, char device_to_add)
221	{
222	strcpy(p->sd[p->subdisks].which_device, device_to_add);
223	++p->subdisks;
224
225	}
226	#else
227	/**
228	* Add a disk to a RAID device.
229	* @param disklist The disklist to add the device to.
230	* @param device_to_add The device to add to @p disklist.
231	* @param index The index number of the disklist entry we're creating.
232	*/
233	void add_disk_to_raid_device(struct list_of_disks *disklist,
234	char *device_to_add, int index)
235	{
236	int items;
237
238	assert(disklist != NULL);
239	assert_string_is_neither_NULL_nor_zerolength(device_to_add);
240	items = disklist->entries;
241	strcpy(disklist->el[items].device, device_to_add);
242	disklist->el[items].index = index;
243	items++;
244	disklist->entries = items;
245	}
246	#endif
247
248
249	/**
250	* Save the additional RAID variables to a stream.
251	* @param vars The RAID variable list to save.
252	* @param fout The FILE pointer to save them to.
253	*/
254	void
255	save_additional_vars_to_file(struct additional_raid_variables *vars,
256	FILE * fout)
257	{
258	int i;
259
260	assert(vars != NULL);
261	assert(fout != NULL);
262
263	for (i = 0; i < vars->entries; i++) {
264	fprintf(fout, " %-21s %s\n", vars->el[i].label,
265	vars->el[i].value);
266	}
267	}
268
269
270	/**
271	* Save a raidlist structure to disk in raidtab format.
272	* @param raidlist The raidlist to save.
273	* @param fname The file to save it to.
274	* @return 0, always.
275	* @bug Return value is redundant.
276	*/
277	int save_raidlist_to_raidtab(struct raidlist_itself raidlist, char fname)
278	{
279	FILE *fout;
280	int current_raid_device;
281	#ifdef __FreeBSD__
282	int i;
283	#else
284	// Linux
285	#endif
286
287	assert(raidlist != NULL);
288	assert_string_is_neither_NULL_nor_zerolength(fname);
289
290	if (raidlist->entries <= 0) {
291	unlink(fname);
292	log_it("Deleting raidtab (no RAID devs anyway)");
293	return (0);
294	}
295	if (!(fout = fopen(fname, "w"))) {
296	log_OS_error("Failed to save raidlist");
297	return (1);
298	}
299	fprintf(fout, "# Generated by Mondo Rescue\n");
300
301	#ifdef __FreeBSD__
302	for (i = 0; i < raidlist->disks.entries; ++i) {
303	fprintf(fout, "drive %s device %s\n", raidlist->disks.el[i].name,
304	raidlist->disks.el[i].device);
305	}
306	for (i = 0; i < (raidlist->spares.entries); ++i) {
307	fprintf(fout, "drive %s device %s hotspare\n",
308	raidlist->spares.el[i].name,
309	raidlist->spares.el[i].device);
310	}
311	#endif
312
313	for (current_raid_device = 0; current_raid_device < raidlist->entries;
314	current_raid_device++) {
315	save_raidrec_to_file(&raidlist->el[current_raid_device], fout);
316	}
317	paranoid_fclose(fout);
318	return (0);
319	}
320
321
322	/**
323	* Save an individual RAID device record to a stream.
324	* @param raidrec The RAID device record to save.
325	* @param fout The stream to save it to.
326	*/
327	void save_raidrec_to_file(struct
328	#ifdef __FreeBSD__
329	vinum_volume
330	#else
331	raid_device_record
332	#endif
333	* raidrec, FILE * fout)
334	{
335	#ifdef __FreeBSD__
336	int i, j;
337
338	fprintf(fout, "\nvolume %s\n", raidrec->volname);
339	for (i = 0; i < raidrec->plexes; ++i) {
340	char org[24];
341	switch (raidrec->plex[i].raidlevel) {
342	case -1:
343	strcpy(org, "concat");
344	break;
345	case 0:
346	strcpy(org, "striped");
347	break;
348	case 5:
349	strcpy(org, "raid5");
350	break;
351	}
352	fprintf(fout, " plex org %s", org);
353	if (raidrec->plex[i].raidlevel != -1) {
354	fprintf(fout, " %ik", raidrec->plex[i].stripesize);
355	}
356	fprintf(fout, "\n");
357
358	for (j = 0; j < raidrec->plex[i].subdisks; ++j) {
359	fprintf(fout, " sd drive %s size 0\n",
360	raidrec->plex[i].sd[j].which_device);
361	}
362	}
363	#else
364	assert(raidrec != NULL);
365	assert(fout != NULL);
366
367	fprintf(fout, "raiddev %s\n", raidrec->raid_device);
368	if (raidrec->raid_level == -2) {
369	fprintf(fout, " raid-level multipath\n");
370	} else if (raidrec->raid_level == -1) {
371	fprintf(fout, " raid-level linear\n");
372	} else {
373	fprintf(fout, " raid-level %d\n",
374	raidrec->raid_level);
375	}
376	fprintf(fout, " nr-raid-disks %d\n",
377	raidrec->data_disks.entries);
378	if (raidrec->spare_disks.entries > 0) {
379	fprintf(fout, " nr-spare-disks %d\n",
380	raidrec->spare_disks.entries);
381	}
382	if (raidrec->parity_disks.entries > 0) {
383	fprintf(fout, " nr-parity-disks %d\n",
384	raidrec->parity_disks.entries);
385	}
386	fprintf(fout, " persistent-superblock %d\n",
387	raidrec->persistent_superblock);
388	if (raidrec->chunk_size > -1) {
389	fprintf(fout, " chunk-size %d\n", raidrec->chunk_size);
390	}
391	if (raidrec->parity > -1) {
392	switch(raidrec->parity) {
393	case 0:
394	fprintf(fout, " parity-algorithm left-asymmetric\n");
395	break;
396	case 1:
397	fprintf(fout, " parity-algorithm right-asymmetric\n");
398	break;
399	case 2:
400	fprintf(fout, " parity-algorithm left-symmetric\n");
401	break;
402	case 3:
403	fprintf(fout, " parity-algorithm right-symmetric\n");
404	break;
405	default:
406	fatal_error("Unknown RAID parity algorithm.");
407	break;
408	}
409	}
410	save_additional_vars_to_file(&raidrec->additional_vars, fout);
411	fprintf(fout, "\n");
412	save_disklist_to_file("raid-disk", &raidrec->data_disks, fout);
413	save_disklist_to_file("spare-disk", &raidrec->spare_disks, fout);
414	save_disklist_to_file("parity-disk", &raidrec->parity_disks, fout);
415	save_disklist_to_file("failed-disk", &raidrec->failed_disks, fout);
416	fprintf(fout, "\n");
417	#endif
418	}
419
420	/**
421	* Retrieve the next line from a raidtab stream.
422	* @param fin The file to read the input from.
423	* @param label Where to put the line's label.
424	* @param value Where to put the line's value.
425	* @return 0 if the line was read and stored successfully, 1 if we're at end of file.
426	*/
427	int get_next_raidtab_line(FILE * fin, char label, char value)
428	{
429	char *incoming;
430	char *p;
431
432	malloc_string(incoming);
433	assert(fin != NULL);
434	assert(label != NULL);
435	assert(value != NULL);
436
437	label[0] = value[0] = '\0';
438	if (feof(fin)) {
439	paranoid_free(incoming);
440	return (1);
441	}
442	for (fgets(incoming, MAX_STR_LEN - 1, fin); !feof(fin);
443	fgets(incoming, MAX_STR_LEN - 1, fin)) {
444	strip_spaces(incoming);
445	p = strchr(incoming, ' ');
446	if (strlen(incoming) < 3 \|\| incoming[0] == '#' \|\| !p) {
447	continue;
448	}
449	*(p++) = '\0';
450	while (*p == ' ') {
451	p++;
452	}
453	strcpy(label, incoming);
454	strcpy(value, p);
455	paranoid_free(incoming);
456	return (0);
457	}
458	return (1);
459	}
460
461
462
463	/**
464	* Load a raidtab file into a raidlist structure.
465	* @param raidlist The raidlist to fill.
466	* @param fname The file to read from.
467	* @return 0 for success, 1 for failure.
468	*/
469	#ifdef __FreeBSD__
470	int load_raidtab_into_raidlist(struct raidlist_itself *raidlist,
471	char *fname)
472	{
473	FILE *fin;
474	char *tmp1 = NULL;
475	int items;
476
477	raidlist->spares.entries = 0;
478	raidlist->disks.entries = 0;
479	if (length_of_file(fname) < 5) {
480	log_it("Raidtab is very small or non-existent. Ignoring it.");
481	raidlist->entries = 0;
482	return (0);
483	}
484	if (!(fin = fopen(fname, "r"))) {
485	log_it("Cannot open raidtab");
486	return (1);
487	}
488	items = 0;
489	log_it("Loading raidtab...");
490	while (!feof(fin)) {
491	int argc;
492	char **argv = get_next_vinum_conf_line(fin, &argc);
493	if (!argv)
494	break;
495	if (!strcmp(argv[0], "drive")) {
496	char drivename, devname;
497	if (argc < 4)
498	continue;
499	drivename = argv[1];
500	devname = get_option_val(argc, argv, "device");
501	if (!devname)
502	continue;
503
504	if (get_option_state(argc, argv, "hotspare")) {
505	strcpy(raidlist->spares.el[raidlist->spares.entries].name,
506	drivename);
507	strcpy(raidlist->spares.el[raidlist->spares.entries].
508	device, devname);
509	raidlist->spares.el[raidlist->spares.entries].index =
510	raidlist->disks.entries;
511	raidlist->spares.entries++;
512	} else {
513	strcpy(raidlist->disks.el[raidlist->disks.entries].name,
514	drivename);
515	strcpy(raidlist->disks.el[raidlist->disks.entries].device,
516	devname);
517	raidlist->disks.el[raidlist->disks.entries].index =
518	raidlist->disks.entries;
519	raidlist->disks.entries++;
520	}
521	} else if (!strcmp(argv[0], "volume")) {
522	char *volname;
523	if (argc < 2)
524	continue;
525	volname = argv[1];
526	strcpy(raidlist->el[raidlist->entries].volname, volname);
527	raidlist->el[raidlist->entries].plexes = 0;
528	raidlist->entries++;
529	} else if (!strcmp(argv[0], "plex")) {
530	int raidlevel, stripesize;
531	char *org = 0;
532	char **tmp = 0;
533	if (argc < 3)
534	continue;
535	org = get_option_val(argc, argv, "org");
536	if (!org)
537	continue;
538	if (strcmp(org, "concat")) {
539	tmp = get_option_vals(argc, argv, "org", 2);
540	if (tmp && tmp[1]) {
541	stripesize = (int) (size_spec(tmp[1]) / 1024);
542	} else
543	stripesize = 279;
544	} else
545	stripesize = 0;
546
547	if (!strcmp(org, "concat")) {
548	raidlevel = -1;
549	} else if (!strcmp(org, "striped")) {
550	raidlevel = 0;
551	} else if (!strcmp(org, "raid5")) {
552	raidlevel = 5;
553	} else
554	continue;
555
556	raidlist->el[raidlist->entries - 1].plex
557	[raidlist->el[raidlist->entries - 1].plexes].raidlevel =
558	raidlevel;
559	raidlist->el[raidlist->entries -
560	1].plex[raidlist->el[raidlist->entries -
561	1].plexes].stripesize =
562	stripesize;
563	raidlist->el[raidlist->entries -
564	1].plex[raidlist->el[raidlist->entries -
565	1].plexes].subdisks = 0;
566	raidlist->el[raidlist->entries - 1].plexes++;
567	} else if ((!strcmp(argv[0], "sd"))
568	\|\| (!strcmp(argv[0], "subdisk"))) {
569	char *drive = 0;
570	if (argc < 3)
571	continue;
572	drive = get_option_val(argc, argv, "drive");
573	if (!drive)
574	continue;
575
576	strcpy(raidlist->el[raidlist->entries - 1].plex
577	[raidlist->el[raidlist->entries - 1].plexes - 1].sd
578	[raidlist->el[raidlist->entries - 1].plex
579	[raidlist->el[raidlist->entries - 1].plexes -
580	1].subdisks].which_device, drive);
581	raidlist->el[raidlist->entries -
582	1].plex[raidlist->el[raidlist->entries -
583	1].plexes - 1].subdisks++;
584	}
585	}
586	fclose(fin);
587	log_it("Raidtab loaded successfully.");
588	mr_asprintf(&tmp1, "%d RAID devices in raidtab", raidlist->entries);
589	log_it(tmp1);
590	mr_free(tmp1);
591	return (0);
592	}
593
594
595	#else
596
597	int load_raidtab_into_raidlist(struct raidlist_itself *raidlist,
598	char *fname)
599	{
600	FILE *fin;
601	char *label;
602	char *value;
603	int items;
604	int v;
605
606	assert(raidlist != NULL);
607	assert_string_is_neither_NULL_nor_zerolength(fname);
608
609	if (length_of_file(fname) < 5) {
610	log_it("Raidtab is very small or non-existent. Ignoring it.");
611	raidlist->entries = 0;
612	return (0);
613	}
614	if (!(fin = fopen(fname, "r"))) {
615	log_it("Cannot open raidtab");
616	return (1);
617	}
618	malloc_string(label);
619	malloc_string(value);
620	items = 0;
621	log_it("Loading raidtab...");
622	get_next_raidtab_line(fin, label, value);
623	while (!feof(fin)) {
624	log_msg(1, "Looking for raid record #%d", items);
625	initialize_raidrec(&raidlist->el[items]);
626	v = 0;
627	/* find the 'raiddev' entry, indicating the start of the block of info */
628	while (!feof(fin) && strcmp(label, "raiddev")) {
629	strcpy(raidlist->el[items].additional_vars.el[v].label, label);
630	strcpy(raidlist->el[items].additional_vars.el[v].value, value);
631	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);
632	v++;
633	get_next_raidtab_line(fin, label, value);
634	}
635	raidlist->el[items].additional_vars.entries = v;
636	if (feof(fin)) {
637	log_msg(1, "No more records.");
638	continue;
639	}
640	log_msg(2, "Record #%d (%s) found", items, value);
641	strcpy(raidlist->el[items].raid_device, value);
642	for (get_next_raidtab_line(fin, label, value);
643	!feof(fin) && strcmp(label, "raiddev");
644	get_next_raidtab_line(fin, label, value)) {
645	process_raidtab_line(fin, &raidlist->el[items], label, value);
646	}
647	items++;
648	}
649	paranoid_fclose(fin);
650	raidlist->entries = items;
651	log_msg(1, "Raidtab loaded successfully.");
652	log_msg(1, "%d RAID devices in raidtab", items);
653	paranoid_free(label);
654	paranoid_free(value);
655	return (0);
656	}
657	#endif
658
659
660
661
662
663
664
665
666	#ifndef __FreeBSD__
667	/**
668	* Process a single line from the raidtab and store the results into @p raidrec.
669	* @param fin The stream to read the line from.
670	* @param raidrec The RAID device record to update.
671	* @param label Where to put the label processed.
672	* @param value Where to put the value processed.
673	*/
674	void
675	process_raidtab_line(FILE * fin,
676	struct raid_device_record *raidrec,
677	char label, char value)
678	{
679
680	/@ add mallocs */
681	char *tmp = NULL;
682	char *labelB;
683	char *valueB;
684
685	struct list_of_disks *disklist;
686	int index;
687	int v;
688
689	malloc_string(labelB);
690	malloc_string(valueB);
691	assert(fin != NULL);
692	assert(raidrec != NULL);
693	assert_string_is_neither_NULL_nor_zerolength(label);
694	assert(value != NULL);
695
696	if (!strcmp(label, "raid-level")) {
697	if (!strcmp(value, "multipath")) {
698	raidrec->raid_level = -2;
699	} else if (!strcmp(value, "linear")) {
700	raidrec->raid_level = -1;
701	} else {
702	raidrec->raid_level = atoi(value);
703	}
704	log_msg(4,"Found raid level %d",raidrec->raid_level);
705	} else if (!strcmp(label, "nr-raid-disks")) { /* ignore it */
706	} else if (!strcmp(label, "nr-spare-disks")) { /* ignore it */
707	} else if (!strcmp(label, "nr-parity-disks")) { /* ignore it */
708	} else if (!strcmp(label, "nr-failed-disks")) { /* ignore it */
709	} else if (!strcmp(label, "persistent-superblock")) {
710	raidrec->persistent_superblock = atoi(value);
711	} else if (!strcmp(label, "chunk-size")) {
712	raidrec->chunk_size = atoi(value);
713	} else if (!strcmp(label, "parity-algorithm")) {
714	if (!strcmp(value, "left-asymmetric")) {
715	raidrec->parity = 0;
716	} else if (!strcmp(value, "right-asymmetric")) {
717	raidrec->parity = 1;
718	} else if (!strcmp(value, "left-symmetric")) {
719	raidrec->parity = 2;
720	} else if (!strcmp(value, "right-symmetric")) {
721	raidrec->parity = 3;
722	} else {
723	log_msg(1, "Unknown RAID parity algorithm '%s'\n.", value);
724	}
725	log_msg(4,"Found raid parity %d",raidrec->parity);
726	} else if (!strcmp(label, "device")) {
727	get_next_raidtab_line(fin, labelB, valueB);
728	if (!strcmp(labelB, "raid-disk")) {
729	disklist = &raidrec->data_disks;
730	} else if (!strcmp(labelB, "spare-disk")) {
731	disklist = &raidrec->spare_disks;
732	} else if (!strcmp(labelB, "parity-disk")) {
733	disklist = &raidrec->parity_disks;
734	} else if (!strcmp(labelB, "failed-disk")) {
735	disklist = &raidrec->failed_disks;
736	} else {
737	disklist = NULL;
738	}
739	if (!disklist) {
740	mr_asprintf(&tmp, "Ignoring '%s %s' pair of disk %s", labelB, valueB, label);
741	log_it(tmp);
742	mr_free(tmp);
743	} else {
744	index = atoi(valueB);
745	add_disk_to_raid_device(disklist, value, index);
746	}
747	} else {
748	v = raidrec->additional_vars.entries;
749	strcpy(raidrec->additional_vars.el[v].label, label);
750	strcpy(raidrec->additional_vars.el[v].value, value);
751	log_msg(4,"Found additional raid pair #%d: %s / %s",v,raidrec->additional_vars.el[v].label,raidrec->additional_vars.el[v].value);
752	v++;
753	raidrec->additional_vars.entries = v;
754	}
755	paranoid_free(labelB);
756	paranoid_free(valueB);
757	}
758	#endif
759
760
761	/**
762	* Save a disklist to a stream in raidtab format.
763	* @param listname One of "raid-disk", "spare-disk", "parity-disk", or "failed-disk".
764	* @param disklist The disklist to save to @p fout.
765	* @param fout The stream to write to.
766	*/
767	void
768	save_disklist_to_file(char *listname,
769	struct list_of_disks disklist, FILE fout)
770	{
771	int i;
772
773	assert_string_is_neither_NULL_nor_zerolength(listname);
774	assert(disklist != NULL);
775	assert(fout != NULL);
776
777	for (i = 0; i < disklist->entries; i++) {
778	fprintf(fout, " device %s\n",
779	disklist->el[i].device);
780	fprintf(fout, " %-21s %d\n", listname, disklist->el[i].index);
781	}
782	}
783
784
785
786
787
788	#ifdef __FreeBSD__
789	/**
790	* Add a new plex to a volume. The index of the plex will be <tt>v-\>plexes - 1</tt>.
791	* @param v The volume to operate on.
792	* @param raidlevel The RAID level of the new plex.
793	* @param stripesize The stripe size (chunk size) of the new plex.
794	*/
795	void add_plex_to_volume(struct vinum_volume *v, int raidlevel,
796	int stripesize)
797	{
798	v->plex[v->plexes].raidlevel = raidlevel;
799	v->plex[v->plexes].stripesize = stripesize;
800	v->plex[v->plexes].subdisks = 0;
801	++v->plexes;
802	}
803
804	/**
805	* For internal use only.
806	*/
807	char *get_next_vinum_conf_line(FILE f, int *argc)
808	{
809	int cnt = 0;
810	static char *argv[64];
811	char **ap;
812	char line = (char ) malloc(MAX_STR_LEN);
813	if (!line)
814	errx(1,
815	"unable to allocate %i bytes of memory for `char *line' at %s:%i",
816	MAX_STR_LEN, __FILE__, __LINE__);
817	(void) fgets(line, MAX_STR_LEN, f);
818	if (feof(f)) {
819	log_it("[GNVCL] Uh... I reached the EOF.");
820	return 0;
821	}
822
823	for (ap = argv; (*ap = strsep(&line, " \t")) != NULL;)
824	if (**ap != '\0') {
825	if (++ap >= &argv[64])
826	break;
827	cnt++;
828	}
829
830	if (strchr(argv[cnt - 1], '\n')) {
831	*(strchr(argv[cnt - 1], '\n')) = '\0';
832	}
833
834	if (argc)
835	*argc = cnt;
836	return argv;
837	}
838
839	/**
840	* For internal use only.
841	*/
842	char get_option_val(int argc, char argv, char option)
843	{
844	int i;
845	for (i = 0; i < (argc - 1); ++i) {
846	if (!strcmp(argv[i], option)) {
847	return argv[i + 1];
848	}
849	}
850	return 0;
851	}
852
853	/**
854	* For internal use only.
855	*/
856	char get_option_vals(int argc, char argv, char *option, int nval)
857	{
858	int i, j;
859	static char **ret;
860	ret = (char *) malloc(nval sizeof(char *));
861	for (i = 0; i < (argc - nval); ++i) {
862	if (!strcmp(argv[i], option)) {
863	for (j = 0; j < nval; ++j) {
864	ret[j] = (char *) malloc(strlen(argv[i + j + 1]) + 1);
865	strcpy(ret[j], argv[i + j + 1]);
866	}
867	return ret;
868	}
869	}
870	return 0;
871	}
872
873	/**
874	* For internal use only.
875	*/
876	bool get_option_state(int argc, char *argv, char option)
877	{
878	int i;
879	for (i = 0; i < argc; ++i)
880	if (!strcmp(argv[i], option))
881	return TRUE;
882
883	return FALSE;
884	}
885
886	/**
887	* Taken from Vinum source -- for internal use only.
888	*/
889	long long size_spec(char *spec)
890	{
891	u_int64_t size;
892	char *s;
893	int sign = 1; /* -1 if negative */
894
895	size = 0;
896	if (spec != NULL) { /* we have a parameter */
897	s = spec;
898	if (s == '-') { / negative, */
899	sign = -1;
900	s++; /* skip */
901	}
902	if ((s >= '0') && (s <= '9')) { /* it's numeric */
903	while ((s >= '0') && (s <= '9')) /* it's numeric */
904	size = size * 10 + s++ - '0'; / convert it */
905	switch (*s) {
906	case '\0':
907	return size * sign;
908
909	case 'B':
910	case 'b':
911	case 'S':
912	case 's':
913	return size * sign * 512;
914
915	case 'K':
916	case 'k':
917	return size * sign * 1024;
918
919	case 'M':
920	case 'm':
921	return size * sign * 1024 * 1024;
922
923	case 'G':
924	case 'g':
925	return size * sign * 1024 * 1024 * 1024;
926
927	case 'T':
928	case 't':
929	log_it
930	("Ok, I'm scared... Someone did a TERABYTE+ size-spec");
931	return size * sign * 1024 * 1024 * 1024 * 1024;
932
933	case 'P':
934	case 'p':
935	log_it
936	("If I was scared last time, I'm freaked out now. Someone actually has a PETABYTE?!?!?!?!");
937	return size * sign * 1024 * 1024 * 1024 * 1024 * 1024;
938
939	case 'E':
940	case 'e':
941	log_it
942	("Okay, I'm REALLY freaked out. Who could devote a whole EXABYTE to their data?!?!");
943	return size * sign * 1024 * 1024 * 1024 * 1024 * 1024 *
944	1024;
945
946	case 'Z':
947	case 'z':
948	log_it
949	("WHAT!?!? A ZETABYTE!?!? You've GOT to be kidding me!!!");
950	return size * sign * 1024 * 1024 * 1024 * 1024 * 1024 *
951	1024 * 1024;
952
953	case 'Y':
954	case 'y':
955	log_it
956	("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?!?!");
957	popup_and_OK
958	("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 :-)");
959	return size * sign * 1024 * 1024 * 1024 * 1024 * 1024 *
960	1024 * 1024 * 1024;
961	}
962	}
963	}
964	return size * sign;
965	}
966
967	#endif
968
969
970
971
972	int parse_mdstat(char mdstat_fname, struct raidlist_itself raidlist, char *device_prefix) {
973
974	const char delims[] = " ";
975
976	FILE *fin = NULL;
977	int res = 0, row, i, index_min;
978	int v = 0;
979	int lastpos = 0;
980	size_t len = 0;
981	char *token = NULL;
982	char *string = NULL;
983	char *cmd = NULL;
984	char *pos = NULL;
985	char type;
986	char *strtmp = NULL;
987	char *strtmp2 = NULL;
988
989	// open file
990	if (!(fin = fopen(mdstat_fname, "r"))) {
991	log_msg(1, "Could not open %s.\n", mdstat_fname);
992	return 1;
993	}
994	// initialise record, build progress and row counters
995	raidlist->entries = 0;
996	raidlist->el[raidlist->entries].progress = 999;
997	row = 1;
998	// skip first output row - contains registered RAID levels
999	res = getline(&strtmp2, &len, fin);
1000	mr_free(strtmp2);
1001	// parse the rest
1002	while ( !feof_unlocked(fin) ) {
1003	res = getline(&string, &len, fin);
1004	log_msg(8, "mdstat line '%s' read.\n", string);
1005	if (res <= 0) break;
1006	// trim spaces
1007	strip_spaces(string);
1008	log_msg(8, "mdstat line 2 '%s' read.\n", string);
1009	// if we have newline after only spaces, this is a blank line, update
1010	// counters, otherwise do normal parsing
1011	if (!strcmp(string,"")) {
1012	row = 1;
1013	raidlist->entries++;
1014	raidlist->el[raidlist->entries].progress = 999;
1015	} else {
1016	switch (row) {
1017	case 1: // device information
1018	// check whether last line of record and if so skip
1019	log_msg(8, "This is the device line\n");
1020	pos = strcasestr(string, "unused devices: ");
1021	if (pos != NULL) {
1022	break;
1023	}
1024	// tokenise string
1025	token = mr_strtok(string, delims, &lastpos);
1026	if (token == NULL) {
1027	// should not happen !
1028	break;
1029	}
1030	// get RAID device name
1031	mr_asprintf(&strtmp,"%s%s", device_prefix, token);
1032	strncpy(raidlist->el[raidlist->entries].raid_device, strtmp, 63);
1033	raidlist->el[raidlist->entries].raid_device[64] = '\0';
1034	mr_free(strtmp);
1035	mr_free(token);
1036	// store the UUID value in the additional_vars structure
1037	v = raidlist->el[raidlist->entries].additional_vars.entries;
1038	strcpy(raidlist->el[raidlist->entries].additional_vars.el[v].label, "UUID");
1039	mr_asprintf(&cmd,"mdadm --detail %s \| grep UUID \| cut -d: -f2- \| sed 's/^ *//'", raidlist->el[raidlist->entries].raid_device);
1040	mr_asprintf(&strtmp, "%s", call_program_and_get_last_line_of_output(cmd));
1041	strcpy(raidlist->el[raidlist->entries].additional_vars.el[v].value, strtmp);
1042	mr_free(strtmp);
1043	v++;
1044	// store the Version value in the additional_vars structure
1045	strcpy(raidlist->el[raidlist->entries].additional_vars.el[v].label, "Version");
1046	mr_asprintf(&cmd,"mdadm --detail %s \| grep Version \| cut -d: -f2- \| sed 's/^ *//'", raidlist->el[raidlist->entries].raid_device);
1047	mr_asprintf(&strtmp, "%s", call_program_and_get_last_line_of_output(cmd));
1048	strcpy(raidlist->el[raidlist->entries].additional_vars.el[v].value, strtmp);
1049	mr_free(strtmp);
1050	v++;
1051	raidlist->el[raidlist->entries].additional_vars.entries = v;
1052	// skip ':' and status
1053	token = mr_strtok (string, delims, &lastpos);
1054	if (token == NULL) {
1055	// should not happen !
1056	break;
1057	}
1058	mr_free(token);
1059	token = mr_strtok (string, delims, &lastpos);
1060	if (token == NULL) {
1061	// should not happen !
1062	break;
1063	}
1064	if (!strcmp(token, "inactive")) {
1065	log_msg(1, "RAID device '%s' inactive.\n",
1066	raidlist->el[raidlist->entries].raid_device);
1067	mr_free(string);
1068	mr_free(token);
1069	return 1;
1070	}
1071	mr_free(token);
1072
1073	// get RAID level
1074	token = mr_strtok (string, delims, &lastpos);
1075	if (token == NULL) {
1076	// should not happen !
1077	break;
1078	}
1079	// skip potential auto-read-only entry
1080	if (!strcmp(token, "(auto-read-only)")) {
1081	mr_free(token);
1082	token = mr_strtok (string, delims, &lastpos);
1083	if (token == NULL) {
1084	// should not happen !
1085	break;
1086	}
1087	}
1088	if (!strcmp(token, "multipath")) {
1089	raidlist->el[raidlist->entries].raid_level = -2;
1090	} else if (!strcmp(token, "linear")) {
1091	raidlist->el[raidlist->entries].raid_level = -1;
1092	} else if (!strcmp(token, "raid0")) {
1093	raidlist->el[raidlist->entries].raid_level = 0;
1094	} else if (!strcmp(token, "raid1")) {
1095	raidlist->el[raidlist->entries].raid_level = 1;
1096	} else if (!strcmp(token, "raid4")) {
1097	raidlist->el[raidlist->entries].raid_level = 4;
1098	} else if (!strcmp(token, "raid5")) {
1099	raidlist->el[raidlist->entries].raid_level = 5;
1100	} else if (!strcmp(token, "raid6")) {
1101	raidlist->el[raidlist->entries].raid_level = 6;
1102	} else if (!strcmp(token, "raid10")) {
1103	raidlist->el[raidlist->entries].raid_level = 10;
1104	} else {
1105	log_msg(1, "Unknown RAID level '%s'.\n", token);
1106	mr_free(string);
1107	mr_free(token);
1108	return 1;
1109	}
1110	mr_free(token);
1111
1112	// get RAID devices (type, index, device)
1113	// Note: parity disk for RAID4 is last normal disk, there is no '(P)'
1114	raidlist->el[raidlist->entries].data_disks.entries = 0;
1115	raidlist->el[raidlist->entries].spare_disks.entries = 0;
1116	raidlist->el[raidlist->entries].failed_disks.entries = 0;
1117	while((token = mr_strtok (string, delims, &lastpos))) {
1118	if ((pos = strstr(token, "("))) {
1119	type = *(pos+1);
1120	} else {
1121	type = ' ';
1122	}
1123	pos = strstr(token, "[");
1124	*pos = '\0';
1125	switch(type) {
1126	case ' ': // normal data disks
1127	raidlist->el[raidlist->entries].data_disks.el[raidlist->el[raidlist->entries].data_disks.entries].index = atoi(pos + 1);
1128	mr_asprintf(&strtmp,"%s%s", device_prefix, token);
1129	strcpy(raidlist->el[raidlist->entries].data_disks.el[raidlist->el[raidlist->entries].data_disks.entries].device, strtmp);
1130	mr_free(strtmp);
1131	raidlist->el[raidlist->entries].data_disks.entries++;
1132	break;
1133	case 'S': // spare disks
1134	raidlist->el[raidlist->entries].spare_disks.el[raidlist->el[raidlist->entries].spare_disks.entries].index = atoi(pos + 1);
1135	mr_asprintf(&strtmp,"%s%s", device_prefix, token);
1136	strcpy(raidlist->el[raidlist->entries].spare_disks.el[raidlist->el[raidlist->entries].spare_disks.entries].device, strtmp);
1137	mr_free(strtmp);
1138	raidlist->el[raidlist->entries].spare_disks.entries++;
1139	break;
1140	case 'F': // failed disks
1141	raidlist->el[raidlist->entries].failed_disks.el[raidlist->el[raidlist->entries].failed_disks.entries].index = atoi(pos + 1);
1142	mr_asprintf(&strtmp,"%s%s", device_prefix, token);
1143	strcpy(raidlist->el[raidlist->entries].failed_disks.el[raidlist->el[raidlist->entries].failed_disks.entries].device, strtmp);
1144	mr_free(strtmp);
1145	raidlist->el[raidlist->entries].failed_disks.entries++;
1146	log_it("At least one failed disk found in RAID array.\n");
1147	break;
1148	default: // error
1149	log_msg(1, "Unknown device type '%c'\n", type);
1150	mr_free(string);
1151	mr_free(token);
1152	return 1;
1153	break;
1154	}
1155	mr_free(token);
1156	}
1157
1158	// adjust index for each device so that it starts with 0 for every type
1159	index_min = 99;
1160	for (i=0; i<raidlist->el[raidlist->entries].data_disks.entries;i++) {
1161	if (raidlist->el[raidlist->entries].data_disks.el[i].index < index_min) {
1162	index_min = raidlist->el[raidlist->entries].data_disks.el[i].index;
1163	}
1164	}
1165	if (index_min > 0) {
1166	for (i=0; i<raidlist->el[raidlist->entries].data_disks.entries;i++) {
1167	raidlist->el[raidlist->entries].data_disks.el[i].index = raidlist->el[raidlist->entries].data_disks.el[i].index - index_min;
1168	}
1169	}
1170	index_min = 99;
1171	for (i=0; i<raidlist->el[raidlist->entries].spare_disks.entries;i++) {
1172	if (raidlist->el[raidlist->entries].spare_disks.el[i].index < index_min) {
1173	index_min = raidlist->el[raidlist->entries].spare_disks.el[i].index;
1174	}
1175	}
1176	if (index_min > 0) {
1177	for (i=0; i<raidlist->el[raidlist->entries].spare_disks.entries;i++) {
1178	raidlist->el[raidlist->entries].spare_disks.el[i].index = raidlist->el[raidlist->entries].spare_disks.el[i].index - index_min;
1179	}
1180	}
1181	index_min = 99;
1182	for (i=0; i<raidlist->el[raidlist->entries].failed_disks.entries;i++) {
1183	if (raidlist->el[raidlist->entries].failed_disks.el[i].index < index_min) {
1184	index_min = raidlist->el[raidlist->entries].failed_disks.el[i].index;
1185	}
1186	}
1187	if (index_min > 0) {
1188	for (i=0; i<raidlist->el[raidlist->entries].failed_disks.entries;i++) {
1189	raidlist->el[raidlist->entries].failed_disks.el[i].index = raidlist->el[raidlist->entries].failed_disks.el[i].index - index_min;
1190	}
1191	}
1192	break;
1193	case 2: // config information
1194	// check for persistent super block
1195	if (strcasestr(string, "super non-persistent")) {
1196	raidlist->el[raidlist->entries].persistent_superblock = 0;
1197	} else {
1198	raidlist->el[raidlist->entries].persistent_superblock = 1;
1199	}
1200	// extract chunk size
1201	if (!(pos = strcasestr(string, "k chunk"))) {
1202	raidlist->el[raidlist->entries].chunk_size = -1;
1203	} else {
1204	while (*pos != ' ') {
1205	pos -= 1;
1206	if (pos < string) {
1207	log_it("String underflow!\n");
1208	mr_free(string);
1209	return 1;
1210	}
1211	}
1212	raidlist->el[raidlist->entries].chunk_size = atoi(pos + 1);
1213	}
1214	// extract parity if present
1215	if ((pos = strcasestr(string, "algorithm"))) {
1216	raidlist->el[raidlist->entries].parity = atoi(pos + 9);
1217	} else {
1218	raidlist->el[raidlist->entries].parity = -1;
1219	}
1220	break;
1221	case 3: // optional build status information
1222	if (!(pos = strchr(string, '\%'))) {
1223	if (strcasestr(string, "delayed")) {
1224	raidlist->el[raidlist->entries].progress = -1; // delayed (therefore, stuck at 0%)
1225	} else {
1226	raidlist->el[raidlist->entries].progress = 999; // not found
1227	}
1228	} else {
1229	while (*pos != ' ') {
1230	pos -= 1;
1231	if (pos < string) {
1232	printf("ERROR: String underflow!\n");
1233	mr_free(string);
1234	return 1;
1235	}
1236	}
1237	raidlist->el[raidlist->entries].progress = atoi(pos);
1238	}
1239	break;
1240	default: // error or IN PROGRESS
1241	if (raidlist->el[raidlist->entries].progress != -1 &&
1242	raidlist->el[raidlist->entries].progress != 999) {
1243	log_msg(1, "Row %d should not occur in record!\n", row);
1244	}
1245	break;
1246	}
1247	row++;
1248	}
1249	// free string
1250	mr_free(string);
1251	}
1252	// close file
1253	fclose(fin);
1254	// return success
1255	return 0;
1256
1257	}
1258
1259
1260
1261
1262	int create_raidtab_from_mdstat(char mdstat_fname,char raidtab_fname)
1263	{
1264	struct raidlist_itself *raidlist;
1265	int retval = 0;
1266
1267	raidlist = malloc(sizeof(struct raidlist_itself));
1268
1269	// FIXME: Prefix '/dev/' should really be dynamic!
1270	if (parse_mdstat(mdstat_fname,raidlist, "/dev/")) {
1271	log_to_screen("Sorry, cannot read %s", mdstat_fname);
1272	return (1);
1273	}
1274
1275	retval += save_raidlist_to_raidtab(raidlist, raidtab_fname);
1276	return (retval);
1277	}
1278
1279
1280
1281	/* @} - end of raidGroup */

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