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source: MondoRescue/branches/3.0/mondo/src/common/libmondo-raid.c@ 3107

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Last change on this file since 3107 was 3060, checked in by Bruno Cornec, 11 years ago

r5035@localhost: bruno | 2012-11-09 03:17:01 +0100

Fix a compilation error and most compilation warnings

Property svn:keywords set to Id

File size: 34.4 KB

Line
1	/* libmondo-raid.c subroutines for handling RAID
2	$Id: libmondo-raid.c 3060 2012-11-10 04:05:37Z 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 3060 2012-11-10 04:05:37Z 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	char *q;
432
433	malloc_string(incoming);
434	assert(fin != NULL);
435	assert(label != NULL);
436	assert(value != NULL);
437
438	label[0] = value[0] = '\0';
439	if (feof(fin)) {
440	paranoid_free(incoming);
441	return (1);
442	}
443	for (q = fgets(incoming, MAX_STR_LEN - 1, fin); !feof(fin) && (q != NULL);
444	q = fgets(incoming, MAX_STR_LEN - 1, fin)) {
445	strip_spaces(incoming);
446	p = strchr(incoming, ' ');
447	if (strlen(incoming) < 3 \|\| incoming[0] == '#' \|\| !p) {
448	continue;
449	}
450	*(p++) = '\0';
451	while (*p == ' ') {
452	p++;
453	}
454	strcpy(label, incoming);
455	strcpy(value, p);
456	paranoid_free(incoming);
457	return (0);
458	}
459	return (1);
460	}
461
462
463
464	/**
465	* Load a raidtab file into a raidlist structure.
466	* @param raidlist The raidlist to fill.
467	* @param fname The file to read from.
468	* @return 0 for success, 1 for failure.
469	*/
470	#ifdef __FreeBSD__
471	int load_raidtab_into_raidlist(struct raidlist_itself *raidlist,
472	char *fname)
473	{
474	FILE *fin;
475	char *tmp1 = NULL;
476	int items;
477
478	raidlist->spares.entries = 0;
479	raidlist->disks.entries = 0;
480	if (length_of_file(fname) < 5) {
481	log_it("Raidtab is very small or non-existent. Ignoring it.");
482	raidlist->entries = 0;
483	return (0);
484	}
485	if (!(fin = fopen(fname, "r"))) {
486	log_it("Cannot open raidtab");
487	return (1);
488	}
489	items = 0;
490	log_it("Loading raidtab...");
491	while (!feof(fin)) {
492	int argc;
493	char **argv = get_next_vinum_conf_line(fin, &argc);
494	if (!argv)
495	break;
496	if (!strcmp(argv[0], "drive")) {
497	char drivename, devname;
498	if (argc < 4)
499	continue;
500	drivename = argv[1];
501	devname = get_option_val(argc, argv, "device");
502	if (!devname)
503	continue;
504
505	if (get_option_state(argc, argv, "hotspare")) {
506	strcpy(raidlist->spares.el[raidlist->spares.entries].name,
507	drivename);
508	strcpy(raidlist->spares.el[raidlist->spares.entries].
509	device, devname);
510	raidlist->spares.el[raidlist->spares.entries].index =
511	raidlist->disks.entries;
512	raidlist->spares.entries++;
513	} else {
514	strcpy(raidlist->disks.el[raidlist->disks.entries].name,
515	drivename);
516	strcpy(raidlist->disks.el[raidlist->disks.entries].device,
517	devname);
518	raidlist->disks.el[raidlist->disks.entries].index =
519	raidlist->disks.entries;
520	raidlist->disks.entries++;
521	}
522	} else if (!strcmp(argv[0], "volume")) {
523	char *volname;
524	if (argc < 2)
525	continue;
526	volname = argv[1];
527	strcpy(raidlist->el[raidlist->entries].volname, volname);
528	raidlist->el[raidlist->entries].plexes = 0;
529	raidlist->entries++;
530	} else if (!strcmp(argv[0], "plex")) {
531	int raidlevel, stripesize;
532	char *org = 0;
533	char **tmp = 0;
534	if (argc < 3)
535	continue;
536	org = get_option_val(argc, argv, "org");
537	if (!org)
538	continue;
539	if (strcmp(org, "concat")) {
540	tmp = get_option_vals(argc, argv, "org", 2);
541	if (tmp && tmp[1]) {
542	stripesize = (int) (size_spec(tmp[1]) / 1024);
543	} else
544	stripesize = 279;
545	} else
546	stripesize = 0;
547
548	if (!strcmp(org, "concat")) {
549	raidlevel = -1;
550	} else if (!strcmp(org, "striped")) {
551	raidlevel = 0;
552	} else if (!strcmp(org, "raid5")) {
553	raidlevel = 5;
554	} else
555	continue;
556
557	raidlist->el[raidlist->entries - 1].plex
558	[raidlist->el[raidlist->entries - 1].plexes].raidlevel =
559	raidlevel;
560	raidlist->el[raidlist->entries -
561	1].plex[raidlist->el[raidlist->entries -
562	1].plexes].stripesize =
563	stripesize;
564	raidlist->el[raidlist->entries -
565	1].plex[raidlist->el[raidlist->entries -
566	1].plexes].subdisks = 0;
567	raidlist->el[raidlist->entries - 1].plexes++;
568	} else if ((!strcmp(argv[0], "sd"))
569	\|\| (!strcmp(argv[0], "subdisk"))) {
570	char *drive = 0;
571	if (argc < 3)
572	continue;
573	drive = get_option_val(argc, argv, "drive");
574	if (!drive)
575	continue;
576
577	strcpy(raidlist->el[raidlist->entries - 1].plex
578	[raidlist->el[raidlist->entries - 1].plexes - 1].sd
579	[raidlist->el[raidlist->entries - 1].plex
580	[raidlist->el[raidlist->entries - 1].plexes -
581	1].subdisks].which_device, drive);
582	raidlist->el[raidlist->entries -
583	1].plex[raidlist->el[raidlist->entries -
584	1].plexes - 1].subdisks++;
585	}
586	}
587	fclose(fin);
588	log_it("Raidtab loaded successfully.");
589	mr_asprintf(&tmp1, "%d RAID devices in raidtab", raidlist->entries);
590	log_it(tmp1);
591	mr_free(tmp1);
592	return (0);
593	}
594
595
596	#else
597
598	int load_raidtab_into_raidlist(struct raidlist_itself *raidlist,
599	char *fname)
600	{
601	FILE *fin;
602	char *label;
603	char *value;
604	int items;
605	int v;
606
607	assert(raidlist != NULL);
608	assert_string_is_neither_NULL_nor_zerolength(fname);
609
610	if (length_of_file(fname) < 5) {
611	log_it("Raidtab is very small or non-existent. Ignoring it.");
612	raidlist->entries = 0;
613	return (0);
614	}
615	if (!(fin = fopen(fname, "r"))) {
616	log_it("Cannot open raidtab");
617	return (1);
618	}
619	malloc_string(label);
620	malloc_string(value);
621	items = 0;
622	log_it("Loading raidtab...");
623	get_next_raidtab_line(fin, label, value);
624	while (!feof(fin)) {
625	log_msg(1, "Looking for raid record #%d", items);
626	initialize_raidrec(&raidlist->el[items]);
627	v = 0;
628	/* find the 'raiddev' entry, indicating the start of the block of info */
629	while (!feof(fin) && strcmp(label, "raiddev")) {
630	strcpy(raidlist->el[items].additional_vars.el[v].label, label);
631	strcpy(raidlist->el[items].additional_vars.el[v].value, value);
632	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);
633	v++;
634	get_next_raidtab_line(fin, label, value);
635	}
636	raidlist->el[items].additional_vars.entries = v;
637	if (feof(fin)) {
638	log_msg(1, "No more records.");
639	continue;
640	}
641	log_msg(2, "Record #%d (%s) found", items, value);
642	strcpy(raidlist->el[items].raid_device, value);
643	for (get_next_raidtab_line(fin, label, value);
644	!feof(fin) && strcmp(label, "raiddev");
645	get_next_raidtab_line(fin, label, value)) {
646	process_raidtab_line(fin, &raidlist->el[items], label, value);
647	}
648	items++;
649	}
650	paranoid_fclose(fin);
651	raidlist->entries = items;
652	log_msg(1, "Raidtab loaded successfully.");
653	log_msg(1, "%d RAID devices in raidtab", items);
654	paranoid_free(label);
655	paranoid_free(value);
656	return (0);
657	}
658	#endif
659
660
661
662
663
664
665
666
667	#ifndef __FreeBSD__
668	/**
669	* Process a single line from the raidtab and store the results into @p raidrec.
670	* @param fin The stream to read the line from.
671	* @param raidrec The RAID device record to update.
672	* @param label Where to put the label processed.
673	* @param value Where to put the value processed.
674	*/
675	void
676	process_raidtab_line(FILE * fin,
677	struct raid_device_record *raidrec,
678	char label, char value)
679	{
680
681	/@ add mallocs */
682	char *tmp = NULL;
683	char *labelB;
684	char *valueB;
685
686	struct list_of_disks *disklist;
687	int index;
688	int v;
689
690	malloc_string(labelB);
691	malloc_string(valueB);
692	assert(fin != NULL);
693	assert(raidrec != NULL);
694	assert_string_is_neither_NULL_nor_zerolength(label);
695	assert(value != NULL);
696
697	if (!strcmp(label, "raid-level")) {
698	if (!strcmp(value, "multipath")) {
699	raidrec->raid_level = -2;
700	} else if (!strcmp(value, "linear")) {
701	raidrec->raid_level = -1;
702	} else {
703	raidrec->raid_level = atoi(value);
704	}
705	log_msg(4,"Found raid level %d",raidrec->raid_level);
706	} else if (!strcmp(label, "nr-raid-disks")) { /* ignore it */
707	} else if (!strcmp(label, "nr-spare-disks")) { /* ignore it */
708	} else if (!strcmp(label, "nr-parity-disks")) { /* ignore it */
709	} else if (!strcmp(label, "nr-failed-disks")) { /* ignore it */
710	} else if (!strcmp(label, "persistent-superblock")) {
711	raidrec->persistent_superblock = atoi(value);
712	} else if (!strcmp(label, "chunk-size")) {
713	raidrec->chunk_size = atoi(value);
714	} else if (!strcmp(label, "parity-algorithm")) {
715	if (!strcmp(value, "left-asymmetric")) {
716	raidrec->parity = 0;
717	} else if (!strcmp(value, "right-asymmetric")) {
718	raidrec->parity = 1;
719	} else if (!strcmp(value, "left-symmetric")) {
720	raidrec->parity = 2;
721	} else if (!strcmp(value, "right-symmetric")) {
722	raidrec->parity = 3;
723	} else {
724	log_msg(1, "Unknown RAID parity algorithm '%s'\n.", value);
725	}
726	log_msg(4,"Found raid parity %d",raidrec->parity);
727	} else if (!strcmp(label, "device")) {
728	get_next_raidtab_line(fin, labelB, valueB);
729	if (!strcmp(labelB, "raid-disk")) {
730	disklist = &raidrec->data_disks;
731	} else if (!strcmp(labelB, "spare-disk")) {
732	disklist = &raidrec->spare_disks;
733	} else if (!strcmp(labelB, "parity-disk")) {
734	disklist = &raidrec->parity_disks;
735	} else if (!strcmp(labelB, "failed-disk")) {
736	disklist = &raidrec->failed_disks;
737	} else {
738	disklist = NULL;
739	}
740	if (!disklist) {
741	mr_asprintf(&tmp, "Ignoring '%s %s' pair of disk %s", labelB, valueB, label);
742	log_it(tmp);
743	mr_free(tmp);
744	} else {
745	index = atoi(valueB);
746	add_disk_to_raid_device(disklist, value, index);
747	}
748	} else {
749	v = raidrec->additional_vars.entries;
750	strcpy(raidrec->additional_vars.el[v].label, label);
751	strcpy(raidrec->additional_vars.el[v].value, value);
752	log_msg(4,"Found additional raid pair #%d: %s / %s",v,raidrec->additional_vars.el[v].label,raidrec->additional_vars.el[v].value);
753	v++;
754	raidrec->additional_vars.entries = v;
755	}
756	paranoid_free(labelB);
757	paranoid_free(valueB);
758	}
759	#endif
760
761
762	/**
763	* Save a disklist to a stream in raidtab format.
764	* @param listname One of "raid-disk", "spare-disk", "parity-disk", or "failed-disk".
765	* @param disklist The disklist to save to @p fout.
766	* @param fout The stream to write to.
767	*/
768	void
769	save_disklist_to_file(char *listname,
770	struct list_of_disks disklist, FILE fout)
771	{
772	int i;
773
774	assert_string_is_neither_NULL_nor_zerolength(listname);
775	assert(disklist != NULL);
776	assert(fout != NULL);
777
778	for (i = 0; i < disklist->entries; i++) {
779	fprintf(fout, " device %s\n",
780	disklist->el[i].device);
781	fprintf(fout, " %-21s %d\n", listname, disklist->el[i].index);
782	}
783	}
784
785
786
787
788
789	#ifdef __FreeBSD__
790	/**
791	* Add a new plex to a volume. The index of the plex will be <tt>v-\>plexes - 1</tt>.
792	* @param v The volume to operate on.
793	* @param raidlevel The RAID level of the new plex.
794	* @param stripesize The stripe size (chunk size) of the new plex.
795	*/
796	void add_plex_to_volume(struct vinum_volume *v, int raidlevel,
797	int stripesize)
798	{
799	v->plex[v->plexes].raidlevel = raidlevel;
800	v->plex[v->plexes].stripesize = stripesize;
801	v->plex[v->plexes].subdisks = 0;
802	++v->plexes;
803	}
804
805	/**
806	* For internal use only.
807	*/
808	char *get_next_vinum_conf_line(FILE f, int *argc)
809	{
810	int cnt = 0;
811	static char *argv[64];
812	char **ap;
813	char *q;
814	char line = (char ) malloc(MAX_STR_LEN);
815
816	if (!line)
817	errx(1,
818	"unable to allocate %i bytes of memory for `char *line' at %s:%i",
819	MAX_STR_LEN, __FILE__, __LINE__);
820	q = fgets(line, MAX_STR_LEN, f);
821	if (feof(f) && (q != NULL)) {
822	log_it("[GNVCL] Uh... I reached the EOF.");
823	return 0;
824	}
825
826	for (ap = argv; (*ap = strsep(&line, " \t")) != NULL;)
827	if (**ap != '\0') {
828	if (++ap >= &argv[64])
829	break;
830	cnt++;
831	}
832
833	if (strchr(argv[cnt - 1], '\n')) {
834	*(strchr(argv[cnt - 1], '\n')) = '\0';
835	}
836
837	if (argc)
838	*argc = cnt;
839	return argv;
840	}
841
842	/**
843	* For internal use only.
844	*/
845	char get_option_val(int argc, char argv, char option)
846	{
847	int i;
848	for (i = 0; i < (argc - 1); ++i) {
849	if (!strcmp(argv[i], option)) {
850	return argv[i + 1];
851	}
852	}
853	return 0;
854	}
855
856	/**
857	* For internal use only.
858	*/
859	char get_option_vals(int argc, char argv, char *option, int nval)
860	{
861	int i, j;
862	static char **ret;
863	ret = (char *) malloc(nval sizeof(char *));
864	for (i = 0; i < (argc - nval); ++i) {
865	if (!strcmp(argv[i], option)) {
866	for (j = 0; j < nval; ++j) {
867	ret[j] = (char *) malloc(strlen(argv[i + j + 1]) + 1);
868	strcpy(ret[j], argv[i + j + 1]);
869	}
870	return ret;
871	}
872	}
873	return 0;
874	}
875
876	/**
877	* For internal use only.
878	*/
879	bool get_option_state(int argc, char *argv, char option)
880	{
881	int i;
882	for (i = 0; i < argc; ++i)
883	if (!strcmp(argv[i], option))
884	return TRUE;
885
886	return FALSE;
887	}
888
889	/**
890	* Taken from Vinum source -- for internal use only.
891	*/
892	long long size_spec(char *spec)
893	{
894	u_int64_t size;
895	char *s;
896	int sign = 1; /* -1 if negative */
897
898	size = 0;
899	if (spec != NULL) { /* we have a parameter */
900	s = spec;
901	if (s == '-') { / negative, */
902	sign = -1;
903	s++; /* skip */
904	}
905	if ((s >= '0') && (s <= '9')) { /* it's numeric */
906	while ((s >= '0') && (s <= '9')) /* it's numeric */
907	size = size * 10 + s++ - '0'; / convert it */
908	switch (*s) {
909	case '\0':
910	return size * sign;
911
912	case 'B':
913	case 'b':
914	case 'S':
915	case 's':
916	return size * sign * 512;
917
918	case 'K':
919	case 'k':
920	return size * sign * 1024;
921
922	case 'M':
923	case 'm':
924	return size * sign * 1024 * 1024;
925
926	case 'G':
927	case 'g':
928	return size * sign * 1024 * 1024 * 1024;
929
930	case 'T':
931	case 't':
932	log_it
933	("Ok, I'm scared... Someone did a TERABYTE+ size-spec");
934	return size * sign * 1024 * 1024 * 1024 * 1024;
935
936	case 'P':
937	case 'p':
938	log_it
939	("If I was scared last time, I'm freaked out now. Someone actually has a PETABYTE?!?!?!?!");
940	return size * sign * 1024 * 1024 * 1024 * 1024 * 1024;
941
942	case 'E':
943	case 'e':
944	log_it
945	("Okay, I'm REALLY freaked out. Who could devote a whole EXABYTE to their data?!?!");
946	return size * sign * 1024 * 1024 * 1024 * 1024 * 1024 *
947	1024;
948
949	case 'Z':
950	case 'z':
951	log_it
952	("WHAT!?!? A ZETABYTE!?!? You've GOT to be kidding me!!!");
953	return size * sign * 1024 * 1024 * 1024 * 1024 * 1024 *
954	1024 * 1024;
955
956	case 'Y':
957	case 'y':
958	log_it
959	("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?!?!");
960	popup_and_OK
961	("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 :-)");
962	return size * sign * 1024 * 1024 * 1024 * 1024 * 1024 *
963	1024 * 1024 * 1024;
964	}
965	}
966	}
967	return size * sign;
968	}
969
970	#endif
971
972
973
974
975	int parse_mdstat(char mdstat_fname, struct raidlist_itself raidlist, char *device_prefix) {
976
977	const char delims[] = " ";
978
979	FILE *fin = NULL;
980	int res = 0, row, i, index_min;
981	int v = 0;
982	int lastpos = 0;
983	size_t len = 0;
984	char *token = NULL;
985	char *string = NULL;
986	char *cmd = NULL;
987	char *pos = NULL;
988	char type;
989	char *strtmp = NULL;
990	char *strtmp2 = NULL;
991
992	// open file
993	if (!(fin = fopen(mdstat_fname, "r"))) {
994	log_msg(1, "Could not open %s.\n", mdstat_fname);
995	return 1;
996	}
997	// initialise record, build progress and row counters
998	raidlist->entries = 0;
999	raidlist->el[raidlist->entries].progress = 999;
1000	row = 1;
1001	// skip first output row - contains registered RAID levels
1002	res = getline(&strtmp2, &len, fin);
1003	mr_free(strtmp2);
1004	// parse the rest
1005	while ( !feof_unlocked(fin) ) {
1006	res = getline(&string, &len, fin);
1007	log_msg(8, "mdstat line '%s' read.\n", string);
1008	if (res <= 0) break;
1009	// trim spaces
1010	strip_spaces(string);
1011	log_msg(8, "mdstat line 2 '%s' read.\n", string);
1012	// if we have newline after only spaces, this is a blank line, update
1013	// counters, otherwise do normal parsing
1014	if (!strcmp(string,"")) {
1015	row = 1;
1016	raidlist->entries++;
1017	raidlist->el[raidlist->entries].progress = 999;
1018	} else {
1019	switch (row) {
1020	case 1: // device information
1021	// check whether last line of record and if so skip
1022	log_msg(8, "This is the device line\n");
1023	pos = strcasestr(string, "unused devices: ");
1024	if (pos != NULL) {
1025	break;
1026	}
1027	// tokenise string
1028	token = mr_strtok(string, delims, &lastpos);
1029	if (token == NULL) {
1030	// should not happen !
1031	break;
1032	}
1033	// get RAID device name
1034	mr_asprintf(&strtmp,"%s%s", device_prefix, token);
1035	strncpy(raidlist->el[raidlist->entries].raid_device, strtmp, 63);
1036	raidlist->el[raidlist->entries].raid_device[63] = '\0';
1037	mr_free(strtmp);
1038	mr_free(token);
1039	// store the UUID value in the additional_vars structure
1040	v = raidlist->el[raidlist->entries].additional_vars.entries;
1041	strcpy(raidlist->el[raidlist->entries].additional_vars.el[v].label, "UUID");
1042	mr_asprintf(&cmd,"mdadm --detail %s \| grep UUID \| cut -d: -f2- \| sed 's/^ *//'", raidlist->el[raidlist->entries].raid_device);
1043	mr_asprintf(&strtmp, "%s", call_program_and_get_last_line_of_output(cmd));
1044	strcpy(raidlist->el[raidlist->entries].additional_vars.el[v].value, strtmp);
1045	mr_free(strtmp);
1046	v++;
1047	// store the Version value in the additional_vars structure
1048	strcpy(raidlist->el[raidlist->entries].additional_vars.el[v].label, "Version");
1049	mr_asprintf(&cmd,"mdadm --detail %s \| grep Version \| cut -d: -f2- \| sed 's/^ *//'", raidlist->el[raidlist->entries].raid_device);
1050	mr_asprintf(&strtmp, "%s", call_program_and_get_last_line_of_output(cmd));
1051	strcpy(raidlist->el[raidlist->entries].additional_vars.el[v].value, strtmp);
1052	mr_free(strtmp);
1053	v++;
1054	raidlist->el[raidlist->entries].additional_vars.entries = v;
1055	// skip ':' and status
1056	token = mr_strtok (string, delims, &lastpos);
1057	if (token == NULL) {
1058	// should not happen !
1059	break;
1060	}
1061	mr_free(token);
1062	token = mr_strtok (string, delims, &lastpos);
1063	if (token == NULL) {
1064	// should not happen !
1065	break;
1066	}
1067	if (!strcmp(token, "inactive")) {
1068	log_msg(1, "RAID device '%s' inactive.\n",
1069	raidlist->el[raidlist->entries].raid_device);
1070	mr_free(string);
1071	mr_free(token);
1072	return 1;
1073	}
1074	mr_free(token);
1075
1076	// get RAID level
1077	token = mr_strtok (string, delims, &lastpos);
1078	if (token == NULL) {
1079	// should not happen !
1080	break;
1081	}
1082	// skip potential auto-read-only entry
1083	if (!strcmp(token, "(auto-read-only)")) {
1084	mr_free(token);
1085	token = mr_strtok (string, delims, &lastpos);
1086	if (token == NULL) {
1087	// should not happen !
1088	break;
1089	}
1090	}
1091	if (!strcmp(token, "multipath")) {
1092	raidlist->el[raidlist->entries].raid_level = -2;
1093	} else if (!strcmp(token, "linear")) {
1094	raidlist->el[raidlist->entries].raid_level = -1;
1095	} else if (!strcmp(token, "raid0")) {
1096	raidlist->el[raidlist->entries].raid_level = 0;
1097	} else if (!strcmp(token, "raid1")) {
1098	raidlist->el[raidlist->entries].raid_level = 1;
1099	} else if (!strcmp(token, "raid4")) {
1100	raidlist->el[raidlist->entries].raid_level = 4;
1101	} else if (!strcmp(token, "raid5")) {
1102	raidlist->el[raidlist->entries].raid_level = 5;
1103	} else if (!strcmp(token, "raid6")) {
1104	raidlist->el[raidlist->entries].raid_level = 6;
1105	} else if (!strcmp(token, "raid10")) {
1106	raidlist->el[raidlist->entries].raid_level = 10;
1107	} else {
1108	log_msg(1, "Unknown RAID level '%s'.\n", token);
1109	mr_free(string);
1110	mr_free(token);
1111	return 1;
1112	}
1113	mr_free(token);
1114
1115	// get RAID devices (type, index, device)
1116	// Note: parity disk for RAID4 is last normal disk, there is no '(P)'
1117	raidlist->el[raidlist->entries].data_disks.entries = 0;
1118	raidlist->el[raidlist->entries].spare_disks.entries = 0;
1119	raidlist->el[raidlist->entries].failed_disks.entries = 0;
1120	while((token = mr_strtok (string, delims, &lastpos))) {
1121	if ((pos = strstr(token, "("))) {
1122	type = *(pos+1);
1123	} else {
1124	type = ' ';
1125	}
1126	pos = strstr(token, "[");
1127	*pos = '\0';
1128	switch(type) {
1129	case ' ': // normal data disks
1130	raidlist->el[raidlist->entries].data_disks.el[raidlist->el[raidlist->entries].data_disks.entries].index = atoi(pos + 1);
1131	mr_asprintf(&strtmp,"%s%s", device_prefix, token);
1132	strcpy(raidlist->el[raidlist->entries].data_disks.el[raidlist->el[raidlist->entries].data_disks.entries].device, strtmp);
1133	mr_free(strtmp);
1134	raidlist->el[raidlist->entries].data_disks.entries++;
1135	break;
1136	case 'S': // spare disks
1137	raidlist->el[raidlist->entries].spare_disks.el[raidlist->el[raidlist->entries].spare_disks.entries].index = atoi(pos + 1);
1138	mr_asprintf(&strtmp,"%s%s", device_prefix, token);
1139	strcpy(raidlist->el[raidlist->entries].spare_disks.el[raidlist->el[raidlist->entries].spare_disks.entries].device, strtmp);
1140	mr_free(strtmp);
1141	raidlist->el[raidlist->entries].spare_disks.entries++;
1142	break;
1143	case 'F': // failed disks
1144	raidlist->el[raidlist->entries].failed_disks.el[raidlist->el[raidlist->entries].failed_disks.entries].index = atoi(pos + 1);
1145	mr_asprintf(&strtmp,"%s%s", device_prefix, token);
1146	strcpy(raidlist->el[raidlist->entries].failed_disks.el[raidlist->el[raidlist->entries].failed_disks.entries].device, strtmp);
1147	mr_free(strtmp);
1148	raidlist->el[raidlist->entries].failed_disks.entries++;
1149	log_it("At least one failed disk found in RAID array.\n");
1150	break;
1151	default: // error
1152	log_msg(1, "Unknown device type '%c'\n", type);
1153	mr_free(string);
1154	mr_free(token);
1155	return 1;
1156	break;
1157	}
1158	mr_free(token);
1159	}
1160
1161	// adjust index for each device so that it starts with 0 for every type
1162	index_min = 99;
1163	for (i=0; i<raidlist->el[raidlist->entries].data_disks.entries;i++) {
1164	if (raidlist->el[raidlist->entries].data_disks.el[i].index < index_min) {
1165	index_min = raidlist->el[raidlist->entries].data_disks.el[i].index;
1166	}
1167	}
1168	if (index_min > 0) {
1169	for (i=0; i<raidlist->el[raidlist->entries].data_disks.entries;i++) {
1170	raidlist->el[raidlist->entries].data_disks.el[i].index = raidlist->el[raidlist->entries].data_disks.el[i].index - index_min;
1171	}
1172	}
1173	index_min = 99;
1174	for (i=0; i<raidlist->el[raidlist->entries].spare_disks.entries;i++) {
1175	if (raidlist->el[raidlist->entries].spare_disks.el[i].index < index_min) {
1176	index_min = raidlist->el[raidlist->entries].spare_disks.el[i].index;
1177	}
1178	}
1179	if (index_min > 0) {
1180	for (i=0; i<raidlist->el[raidlist->entries].spare_disks.entries;i++) {
1181	raidlist->el[raidlist->entries].spare_disks.el[i].index = raidlist->el[raidlist->entries].spare_disks.el[i].index - index_min;
1182	}
1183	}
1184	index_min = 99;
1185	for (i=0; i<raidlist->el[raidlist->entries].failed_disks.entries;i++) {
1186	if (raidlist->el[raidlist->entries].failed_disks.el[i].index < index_min) {
1187	index_min = raidlist->el[raidlist->entries].failed_disks.el[i].index;
1188	}
1189	}
1190	if (index_min > 0) {
1191	for (i=0; i<raidlist->el[raidlist->entries].failed_disks.entries;i++) {
1192	raidlist->el[raidlist->entries].failed_disks.el[i].index = raidlist->el[raidlist->entries].failed_disks.el[i].index - index_min;
1193	}
1194	}
1195	break;
1196	case 2: // config information
1197	// check for persistent super block
1198	if (strcasestr(string, "super non-persistent")) {
1199	raidlist->el[raidlist->entries].persistent_superblock = 0;
1200	} else {
1201	raidlist->el[raidlist->entries].persistent_superblock = 1;
1202	}
1203	// extract chunk size
1204	if (!(pos = strcasestr(string, "k chunk"))) {
1205	raidlist->el[raidlist->entries].chunk_size = -1;
1206	} else {
1207	while (*pos != ' ') {
1208	pos -= 1;
1209	if (pos < string) {
1210	log_it("String underflow!\n");
1211	mr_free(string);
1212	return 1;
1213	}
1214	}
1215	raidlist->el[raidlist->entries].chunk_size = atoi(pos + 1);
1216	}
1217	// extract parity if present
1218	if ((pos = strcasestr(string, "algorithm"))) {
1219	raidlist->el[raidlist->entries].parity = atoi(pos + 9);
1220	} else {
1221	raidlist->el[raidlist->entries].parity = -1;
1222	}
1223	break;
1224	case 3: // optional build status information
1225	if (!(pos = strchr(string, '\%'))) {
1226	if (strcasestr(string, "delayed")) {
1227	raidlist->el[raidlist->entries].progress = -1; // delayed (therefore, stuck at 0%)
1228	} else {
1229	raidlist->el[raidlist->entries].progress = 999; // not found
1230	}
1231	} else {
1232	while (*pos != ' ') {
1233	pos -= 1;
1234	if (pos < string) {
1235	printf("ERROR: String underflow!\n");
1236	mr_free(string);
1237	return 1;
1238	}
1239	}
1240	raidlist->el[raidlist->entries].progress = atoi(pos);
1241	}
1242	break;
1243	default: // error or IN PROGRESS
1244	if (raidlist->el[raidlist->entries].progress != -1 &&
1245	raidlist->el[raidlist->entries].progress != 999) {
1246	log_msg(1, "Row %d should not occur in record!\n", row);
1247	}
1248	break;
1249	}
1250	row++;
1251	}
1252	// free string
1253	mr_free(string);
1254	}
1255	// close file
1256	fclose(fin);
1257	// return success
1258	return 0;
1259
1260	}
1261
1262
1263
1264
1265	int create_raidtab_from_mdstat(char mdstat_fname,char raidtab_fname)
1266	{
1267	struct raidlist_itself *raidlist;
1268	int retval = 0;
1269
1270	raidlist = malloc(sizeof(struct raidlist_itself));
1271
1272	// FIXME: Prefix '/dev/' should really be dynamic!
1273	if (parse_mdstat(mdstat_fname,raidlist, "/dev/")) {
1274	log_to_screen("Sorry, cannot read %s", mdstat_fname);
1275	return (1);
1276	}
1277
1278	retval += save_raidlist_to_raidtab(raidlist, raidtab_fname);
1279	return (retval);
1280	}
1281
1282
1283
1284	/* @} - end of raidGroup */

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