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source: MondoRescue/branches/stable/mondo/src/common/libmondo-raid.c @ 1171

Last change on this file since 1171 was 1171, checked in by Bruno Cornec, 14 years ago
asprintf => mr_asprintf + getline => mr_getline
Property svn:keywords set to `Id`
File size: 32.0 KB

Line
1	/* libmondo-raid.c subroutines for handling RAID
2	$Id: libmondo-raid.c 1171 2007-02-15 09:51:21Z 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-raid.h"
18	#include "mr_str.h"
19	#include "mr_mem.h"
20	#include "mr_msg.h"
21
22	#ifdef __FreeBSD__
23	/* Nonstandard library functions: */
24	extern void errx(int exitval, const char *fmt, ...);
25	extern char strsep(char stringp, const char delim);
26	#endif
27
28	/@unused@/
29	//static char cvsid[] = "$Id: libmondo-raid.c 1171 2007-02-15 09:51:21Z bruno $";
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	*/
42	bool is_this_raid_personality_registered(int raidno)
43	{
44	#ifdef __FreeBSD__
45	return ((raidno == -1) \|\| (raidno == 0) \|\| (raidno == 1)
46	\|\| (raidno == 5)) ? TRUE : FALSE;
47	#else
48	/@ buffer ********************************************************* */
49	char *command;
50	int res;
51
52	command = mr_malloc(MAX_STR_LEN * 2);
53	strcpy(command, "grep \" /proc/mdstat");
54	if (raidno == -1) {
55	strcat(command, "linear");
56	} else {
57	sprintf(command + strlen(command), "raid%d", raidno);
58	}
59	strcat(command, "\" > /dev/null 2> /dev/null");
60	log_it("Is raid %d registered? Command = '%s'", raidno, command);
61	res = system(command);
62	mr_free(command);
63	if (res) {
64	return (FALSE);
65	} else {
66	return (TRUE);
67	}
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	*/
82	int
83	where_in_drivelist_is_drive(struct list_of_disks disklist, char device)
84	{
85
86	/@ int ************************************************************ */
87	int i = 0;
88
89	assert(disklist != NULL);
90	assert_string_is_neither_NULL_nor_zerolength(device);
91
92	for (i = 0; i < disklist->entries; i++) {
93	if (!strcmp(disklist->el[i].device, device)) {
94	break;
95	}
96	}
97	if (i == disklist->entries) {
98	return (-1);
99	} else {
100	return (i);
101	}
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	*/
117	int
118	which_raid_device_is_using_this_partition(struct raidlist_itself *raidlist,
119	char *device)
120	{
121	#ifdef __FreeBSD__
122	// FreeBSD-specific version of which_raid_device_is_using_this_partition()
123	/@ int ******************************************************** */
124	int i = 0;
125
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	}
140	}
141
142	if (thisone) {
143	break;
144	}
145	}
146	if (i == raidlist->entries) {
147	return (-1);
148	} else {
149	return (i);
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
157	int current_raiddev = 0;
158
159	assert_string_is_neither_NULL_nor_zerolength(device);
160	assert(raidlist != NULL);
161
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	}
174	}
175	if (current_raiddev == raidlist->entries) {
176	return (-1);
177	} else {
178	return (current_raiddev);
179	}
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	*/
189	void
190	write_variableINT_to_raid_var_line(struct raid_device_record *raidrec,
191	int lino, char *label, int value)
192	{
193	/@ buffers **************************************************** */
194	char *sz_value;
195
196	malloc_string(sz_value);
197	assert(raidrec != NULL);
198	assert(label != NULL);
199
200	sprintf(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 idx)
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 = idx;
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	mr_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	mr_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	mr_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 *tmp;
475	int items;
476
477	malloc_string(tmp);
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	mr_free(tmp);
484	return (0);
485	}
486	if (!(fin = fopen(fname, "r"))) {
487	log_it("Cannot open raidtab");
488	mr_free(tmp);
489	return (1);
490	}
491	items = 0;
492	log_it("Loading raidtab...");
493	while (!feof(fin)) {
494	int argc;
495	char **argv = get_next_vinum_conf_line(fin, &argc);
496	if (!argv)
497	break;
498	if (!strcmp(argv[0], "drive")) {
499	char drivename, devname;
500	if (argc < 4)
501	continue;
502	drivename = argv[1];
503	devname = get_option_val(argc, argv, "device");
504	if (!devname)
505	continue;
506
507	if (get_option_state(argc, argv, "hotspare")) {
508	strcpy(raidlist->spares.el[raidlist->spares.entries].name,
509	drivename);
510	strcpy(raidlist->spares.el[raidlist->spares.entries].
511	device, devname);
512	raidlist->spares.el[raidlist->spares.entries].index =
513	raidlist->disks.entries;
514	raidlist->spares.entries++;
515	} else {
516	strcpy(raidlist->disks.el[raidlist->disks.entries].name,
517	drivename);
518	strcpy(raidlist->disks.el[raidlist->disks.entries].device,
519	devname);
520	raidlist->disks.el[raidlist->disks.entries].index =
521	raidlist->disks.entries;
522	raidlist->disks.entries++;
523	}
524	} else if (!strcmp(argv[0], "volume")) {
525	char *volname;
526	if (argc < 2)
527	continue;
528	volname = argv[1];
529	strcpy(raidlist->el[raidlist->entries].volname, volname);
530	raidlist->el[raidlist->entries].plexes = 0;
531	raidlist->entries++;
532	} else if (!strcmp(argv[0], "plex")) {
533	int raidlevel, stripesize;
534	char *org = 0;
535	char **tmp = 0;
536	if (argc < 3)
537	continue;
538	org = get_option_val(argc, argv, "org");
539	if (!org)
540	continue;
541	if (strcmp(org, "concat")) {
542	tmp = get_option_vals(argc, argv, "org", 2);
543	if (tmp && tmp[1]) {
544	stripesize = (int) (size_spec(tmp[1]) / 1024);
545	} else
546	stripesize = 279;
547	} else
548	stripesize = 0;
549
550	if (!strcmp(org, "concat")) {
551	raidlevel = -1;
552	} else if (!strcmp(org, "striped")) {
553	raidlevel = 0;
554	} else if (!strcmp(org, "raid5")) {
555	raidlevel = 5;
556	} else
557	continue;
558
559	raidlist->el[raidlist->entries - 1].plex
560	[raidlist->el[raidlist->entries - 1].plexes].raidlevel =
561	raidlevel;
562	raidlist->el[raidlist->entries -
563	1].plex[raidlist->el[raidlist->entries -
564	1].plexes].stripesize =
565	stripesize;
566	raidlist->el[raidlist->entries -
567	1].plex[raidlist->el[raidlist->entries -
568	1].plexes].subdisks = 0;
569	raidlist->el[raidlist->entries - 1].plexes++;
570	} else if ((!strcmp(argv[0], "sd"))
571	\|\| (!strcmp(argv[0], "subdisk"))) {
572	char *drive = 0;
573	if (argc < 3)
574	continue;
575	drive = get_option_val(argc, argv, "drive");
576	if (!drive)
577	continue;
578
579	strcpy(raidlist->el[raidlist->entries - 1].plex
580	[raidlist->el[raidlist->entries - 1].plexes - 1].sd
581	[raidlist->el[raidlist->entries - 1].plex
582	[raidlist->el[raidlist->entries - 1].plexes -
583	1].subdisks].which_device, drive);
584	raidlist->el[raidlist->entries -
585	1].plex[raidlist->el[raidlist->entries -
586	1].plexes - 1].subdisks++;
587	}
588	}
589	fclose(fin);
590	log_it("Raidtab loaded successfully.");
591	sprintf(tmp, "%d RAID devices in raidtab", raidlist->entries);
592	log_it(tmp);
593	mr_free(tmp);
594	return (0);
595	}
596
597
598	#else
599
600	int load_raidtab_into_raidlist(struct raidlist_itself *raidlist,
601	char *fname)
602	{
603	FILE *fin;
604	char *tmp;
605	char *label;
606	char *value;
607	int items;
608	int v;
609
610	malloc_string(tmp);
611	malloc_string(label);
612	malloc_string(value);
613	assert(raidlist != NULL);
614	assert_string_is_neither_NULL_nor_zerolength(fname);
615
616	if (length_of_file(fname) < 5) {
617	log_it("Raidtab is very small or non-existent. Ignoring it.");
618	raidlist->entries = 0;
619	mr_free(tmp);
620	mr_free(label);
621	mr_free(value);
622	return (0);
623	}
624	if (!(fin = fopen(fname, "r"))) {
625	log_it("Cannot open raidtab");
626	mr_free(tmp);
627	mr_free(label);
628	mr_free(value);
629	return (1);
630	}
631	items = 0;
632	log_it("Loading raidtab...");
633	get_next_raidtab_line(fin, label, value);
634	while (!feof(fin)) {
635	mr_msg(1, "Looking for raid record #%d", items);
636	initialize_raidrec(&raidlist->el[items]);
637	v = 0;
638	/* find the 'raiddev' entry, indicating the start of the block of info */
639	while (!feof(fin) && strcmp(label, "raiddev")) {
640	strcpy(raidlist->el[items].additional_vars.el[v].label, label);
641	strcpy(raidlist->el[items].additional_vars.el[v].value, value);
642	v++;
643	get_next_raidtab_line(fin, label, value);
644	log_it(tmp);
645	}
646	raidlist->el[items].additional_vars.entries = v;
647	if (feof(fin)) {
648	mr_msg(1, "No more records.");
649	continue;
650	}
651	mr_msg(2, "Record #%d (%s) found", items, value);
652	strcpy(raidlist->el[items].raid_device, value);
653	for (get_next_raidtab_line(fin, label, value);
654	!feof(fin) && strcmp(label, "raiddev");
655	get_next_raidtab_line(fin, label, value)) {
656	process_raidtab_line(fin, &raidlist->el[items], label, value);
657	}
658	items++;
659	}
660	paranoid_fclose(fin);
661	raidlist->entries = items;
662	mr_msg(1, "Raidtab loaded successfully.");
663	mr_msg(1, "%d RAID devices in raidtab", items);
664	mr_free(tmp);
665	mr_free(label);
666	mr_free(value);
667	return (0);
668	}
669	#endif
670
671
672
673
674
675
676
677
678	#ifndef __FreeBSD__
679	/**
680	* Process a single line from the raidtab and store the results into @p raidrec.
681	* @param fin The stream to read the line from.
682	* @param raidrec The RAID device record to update.
683	* @param label Where to put the label processed.
684	* @param value Where to put the value processed.
685	*/
686	void
687	process_raidtab_line(FILE * fin,
688	struct raid_device_record *raidrec,
689	char label, char value)
690	{
691
692	/@ add mallocs */
693	char *tmp;
694	char *labelB;
695	char *valueB;
696
697	struct list_of_disks *disklist;
698	int v;
699
700	malloc_string(tmp);
701	malloc_string(labelB);
702	malloc_string(valueB);
703	assert(fin != NULL);
704	assert(raidrec != NULL);
705	assert_string_is_neither_NULL_nor_zerolength(label);
706	assert(value != NULL);
707
708	if (!strcmp(label, "raid-level")) {
709	if (!strcmp(value, "multipath")) {
710	raidrec->raid_level = -2;
711	} else if (!strcmp(value, "linear")) {
712	raidrec->raid_level = -1;
713	} else {
714	raidrec->raid_level = atoi(value);
715	}
716	} else if (!strcmp(label, "nr-raid-disks")) { /* ignore it */
717	} else if (!strcmp(label, "nr-spare-disks")) { /* ignore it */
718	} else if (!strcmp(label, "nr-parity-disks")) { /* ignore it */
719	} else if (!strcmp(label, "nr-failed-disks")) { /* ignore it */
720	} else if (!strcmp(label, "persistent-superblock")) {
721	raidrec->persistent_superblock = atoi(value);
722	} else if (!strcmp(label, "chunk-size")) {
723	raidrec->chunk_size = atoi(value);
724	} else if (!strcmp(label, "parity-algorithm")) {
725	if (!strcmp(value, "left-asymmetric")) {
726	raidrec->parity = 0;
727	} else if (!strcmp(value, "right-asymmetric")) {
728	raidrec->parity = 1;
729	} else if (!strcmp(value, "left-symmetric")) {
730	raidrec->parity = 2;
731	} else if (!strcmp(value, "right-symmetric")) {
732	raidrec->parity = 3;
733	} else {
734	mr_msg(1, "Unknown RAID parity algorithm '%s'\n.", value);
735	}
736	} else if (!strcmp(label, "device")) {
737	get_next_raidtab_line(fin, labelB, valueB);
738	if (!strcmp(labelB, "raid-disk")) {
739	disklist = &raidrec->data_disks;
740	} else if (!strcmp(labelB, "spare-disk")) {
741	disklist = &raidrec->spare_disks;
742	} else if (!strcmp(labelB, "parity-disk")) {
743	disklist = &raidrec->parity_disks;
744	} else if (!strcmp(labelB, "failed-disk")) {
745	disklist = &raidrec->failed_disks;
746	} else {
747	disklist = NULL;
748	}
749	if (!disklist) {
750	sprintf(tmp,
751	"Ignoring '%s %s' pair of disk %s", labelB, valueB,
752	label);
753	log_it(tmp);
754	} else {
755	add_disk_to_raid_device(disklist, value, atoi(valueB));
756	}
757	} else {
758	v = raidrec->additional_vars.entries;
759	strcpy(raidrec->additional_vars.el[v].label, label);
760	strcpy(raidrec->additional_vars.el[v].value, value);
761	raidrec->additional_vars.entries = ++v;
762	}
763	mr_free(tmp);
764	mr_free(labelB);
765	mr_free(valueB);
766	}
767	#endif
768
769
770	/**
771	* Save a disklist to a stream in raidtab format.
772	* @param listname One of "raid-disk", "spare-disk", "parity-disk", or "failed-disk".
773	* @param disklist The disklist to save to @p fout.
774	* @param fout The stream to write to.
775	*/
776	void
777	save_disklist_to_file(char *listname,
778	struct list_of_disks disklist, FILE fout)
779	{
780	int i;
781
782	assert_string_is_neither_NULL_nor_zerolength(listname);
783	assert(disklist != NULL);
784	assert(fout != NULL);
785
786	for (i = 0; i < disklist->entries; i++) {
787	fprintf(fout, " device %s\n",
788	disklist->el[i].device);
789	fprintf(fout, " %-21s %d\n", listname, disklist->el[i].index);
790	}
791	}
792
793
794
795
796
797	#ifdef __FreeBSD__
798	/**
799	* Add a new plex to a volume. The index of the plex will be <tt>v-\>plexes - 1</tt>.
800	* @param v The volume to operate on.
801	* @param raidlevel The RAID level of the new plex.
802	* @param stripesize The stripe size (chunk size) of the new plex.
803	*/
804	void add_plex_to_volume(struct vinum_volume *v, int raidlevel,
805	int stripesize)
806	{
807	v->plex[v->plexes].raidlevel = raidlevel;
808	v->plex[v->plexes].stripesize = stripesize;
809	v->plex[v->plexes].subdisks = 0;
810	++v->plexes;
811	}
812
813	/**
814	* For internal use only.
815	*/
816	char *get_next_vinum_conf_line(FILE f, int *argc)
817	{
818	int cnt = 0;
819	static char *argv[64];
820	char **ap;
821	char line = (char ) mr_malloc(MAX_STR_LEN);
822	(void) fgets(line, MAX_STR_LEN, f);
823	if (feof(f)) {
824	log_it("[GNVCL] Uh... I reached the EOF.");
825	return 0;
826	}
827
828	for (ap = argv; (*ap = strsep(&line, " \t")) != NULL;)
829	if (**ap != '\0') {
830	if (++ap >= &argv[64])
831	break;
832	cnt++;
833	}
834
835	if (strchr(argv[cnt - 1], '\n')) {
836	*(strchr(argv[cnt - 1], '\n')) = '\0';
837	}
838
839	if (argc)
840	*argc = cnt;
841	return argv;
842	}
843
844	/**
845	* For internal use only.
846	*/
847	char get_option_val(int argc, char argv, char option)
848	{
849	int i;
850	for (i = 0; i < (argc - 1); ++i) {
851	if (!strcmp(argv[i], option)) {
852	return argv[i + 1];
853	}
854	}
855	return 0;
856	}
857
858	/**
859	* For internal use only.
860	*/
861	char get_option_vals(int argc, char argv, char *option, int nval)
862	{
863	int i, j;
864	static char **ret;
865	ret = (char *) mr_malloc(nval sizeof(char *));
866	for (i = 0; i < (argc - nval); ++i) {
867	if (!strcmp(argv[i], option)) {
868	for (j = 0; j < nval; ++j) {
869	ret[j] = (char *) mr_malloc(strlen(argv[i + j + 1]) + 1);
870	strcpy(ret[j], argv[i + j + 1]);
871	}
872	return ret;
873	}
874	}
875	return 0;
876	}
877
878	/**
879	* For internal use only.
880	*/
881	bool get_option_state(int argc, char *argv, char option)
882	{
883	int i;
884	for (i = 0; i < argc; ++i)
885	if (!strcmp(argv[i], option))
886	return TRUE;
887
888	return FALSE;
889	}
890
891	/**
892	* Taken from Vinum source -- for internal use only.
893	*/
894	long long size_spec(char *spec)
895	{
896	u_int64_t size;
897	char *s;
898	int sign = 1; /* -1 if negative */
899
900	size = 0;
901	if (spec != NULL) { /* we have a parameter */
902	s = spec;
903	if (s == '-') { / negative, */
904	sign = -1;
905	s++; /* skip */
906	}
907	if ((s >= '0') && (s <= '9')) { /* it's numeric */
908	while ((s >= '0') && (s <= '9')) /* it's numeric */
909	size = size * 10 + s++ - '0'; / convert it */
910	switch (*s) {
911	case '\0':
912	return size * sign;
913
914	case 'B':
915	case 'b':
916	case 'S':
917	case 's':
918	return size * sign * 512;
919
920	case 'K':
921	case 'k':
922	return size * sign * 1024;
923
924	case 'M':
925	case 'm':
926	return size * sign * 1024 * 1024;
927
928	case 'G':
929	case 'g':
930	return size * sign * 1024 * 1024 * 1024;
931
932	case 'T':
933	case 't':
934	log_it
935	("Ok, I'm scared... Someone did a TERABYTE+ size-spec");
936	return size * sign * 1024 * 1024 * 1024 * 1024;
937
938	case 'P':
939	case 'p':
940	log_it
941	("If I was scared last time, I'm freaked out now. Someone actually has a PETABYTE?!?!?!?!");
942	return size * sign * 1024 * 1024 * 1024 * 1024 * 1024;
943
944	case 'E':
945	case 'e':
946	log_it
947	("Okay, I'm REALLY freaked out. Who could devote a whole EXABYTE to their data?!?!");
948	return size * sign * 1024 * 1024 * 1024 * 1024 * 1024 *
949	1024;
950
951	case 'Z':
952	case 'z':
953	log_it
954	("WHAT!?!? A ZETABYTE!?!? You've GOT to be kidding me!!!");
955	return size * sign * 1024 * 1024 * 1024 * 1024 * 1024 *
956	1024 * 1024;
957
958	case 'Y':
959	case 'y':
960	log_it
961	("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?!?!");
962	popup_and_OK
963	("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 :-)");
964	return size * sign * 1024 * 1024 * 1024 * 1024 * 1024 *
965	1024 * 1024 * 1024;
966	}
967	}
968	}
969	return size * sign;
970	}
971
972	#endif
973
974
975
976
977	int parse_mdstat(struct raidlist_itself raidlist, char device_prefix) {
978
979	const char delims[] = " ";
980
981	FILE *fin;
982	int res = 0, row, i, index_min;
983	int lastpos = 0;
984	size_t len = 0;
985	char *token;
986	char *string = NULL;
987	char *pos;
988	char type;
989	char *strtmp;
990
991	// open file
992	if (!(fin = fopen(MDSTAT_FILE, "r"))) {
993	mr_msg(1, "Could not open %s.\n", MDSTAT_FILE);
994	return 1;
995	}
996	// initialise record, build progress and row counters
997	raidlist->entries = 0;
998	raidlist->el[raidlist->entries].progress = 999;
999	row = 1;
1000	// skip first output row - contains registered RAID levels
1001	res = mr_getline(&string, &len, fin);
1002	// parse the rest
1003	while ( !feof_unlocked(fin) ) {
1004	res = mr_getline(&string, &len, fin);
1005	if (res <= 0) break;
1006	// trim leading spaces
1007	pos = string;
1008	while (*pos == ' ') pos += 1;
1009	mr_asprintf(&strtmp, pos);
1010	strcpy(string, strtmp);
1011	mr_free(strtmp);
1012	// if we have newline after only spaces, this is a blank line, update
1013	// counters, otherwise do normal parsing
1014	if (*string == '\n') {
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	pos = strcasestr(string, "unused devices: ");
1023	if (pos == string) {
1024	//raidlist->entries--;
1025	break;
1026	}
1027	// tokenise string
1028	token = mr_strtok (string, delims, &lastpos);
1029	// get RAID device name
1030	mr_asprintf(&strtmp,"%s%s", device_prefix, token);
1031	strcpy(raidlist->el[raidlist->entries].raid_device, strtmp);
1032	mr_free(strtmp);
1033	mr_free(token);
1034	// skip ':' and status
1035	token = mr_strtok (string, delims, &lastpos);
1036	mr_free(token);
1037	token = mr_strtok (string, delims, &lastpos);
1038	if (!strcmp(token, "inactive")) {
1039	mr_msg(1, "RAID device '%s' inactive.\n",
1040	raidlist->el[raidlist->entries].raid_device);
1041	mr_free(string);
1042	mr_free(token);
1043	return 1;
1044	}
1045	mr_free(token);
1046
1047	// get RAID level
1048	token = mr_strtok (string, delims, &lastpos);
1049	if (!strcmp(token, "multipath")) {
1050	raidlist->el[raidlist->entries].raid_level = -2;
1051	} else if (!strcmp(token, "linear")) {
1052	raidlist->el[raidlist->entries].raid_level = -1;
1053	} else if (!strcmp(token, "raid0")) {
1054	raidlist->el[raidlist->entries].raid_level = 0;
1055	} else if (!strcmp(token, "raid1")) {
1056	raidlist->el[raidlist->entries].raid_level = 1;
1057	} else if (!strcmp(token, "raid4")) {
1058	raidlist->el[raidlist->entries].raid_level = 4;
1059	} else if (!strcmp(token, "raid5")) {
1060	raidlist->el[raidlist->entries].raid_level = 5;
1061	} else if (!strcmp(token, "raid6")) {
1062	raidlist->el[raidlist->entries].raid_level = 6;
1063	} else if (!strcmp(token, "raid10")) {
1064	raidlist->el[raidlist->entries].raid_level = 10;
1065	} else {
1066	mr_msg(1, "Unknown RAID level '%s'.\n", token);
1067	mr_free(string);
1068	mr_free(token);
1069	return 1;
1070	}
1071	mr_free(token);
1072
1073	// get RAID devices (type, index, device)
1074	// Note: parity disk for RAID4 is last normal disk, there is no '(P)'
1075	raidlist->el[raidlist->entries].data_disks.entries = 0;
1076	raidlist->el[raidlist->entries].spare_disks.entries = 0;
1077	raidlist->el[raidlist->entries].failed_disks.entries = 0;
1078	while((token = mr_strtok (string, delims, &lastpos))) {
1079	if ((pos = strstr(token, "("))) {
1080	type = *(pos+1);
1081	} else {
1082	type = ' ';
1083	}
1084	pos = strstr(token, "[");
1085	*pos = '\0';
1086	switch(type) {
1087	case ' ': // normal data disks
1088	raidlist->el[raidlist->entries].data_disks.el[raidlist->el[raidlist->entries].data_disks.entries].index = atoi(pos + 1);
1089	mr_asprintf(&strtmp,"%s%s", device_prefix, token);
1090	strcpy(raidlist->el[raidlist->entries].data_disks.el[raidlist->el[raidlist->entries].data_disks.entries].device, strtmp);
1091	mr_free(strtmp);
1092	raidlist->el[raidlist->entries].data_disks.entries++;
1093	break;
1094	case 'S': // spare disks
1095	raidlist->el[raidlist->entries].spare_disks.el[raidlist->el[raidlist->entries].spare_disks.entries].index = atoi(pos + 1);
1096	mr_asprintf(&strtmp,"%s%s", device_prefix, token);
1097	strcpy(raidlist->el[raidlist->entries].spare_disks.el[raidlist->el[raidlist->entries].spare_disks.entries].device, strtmp);
1098	mr_free(strtmp);
1099	raidlist->el[raidlist->entries].spare_disks.entries++;
1100	break;
1101	case 'F': // failed disks
1102	raidlist->el[raidlist->entries].failed_disks.el[raidlist->el[raidlist->entries].failed_disks.entries].index = atoi(pos + 1);
1103	mr_asprintf(&strtmp,"%s%s", device_prefix, token);
1104	strcpy(raidlist->el[raidlist->entries].failed_disks.el[raidlist->el[raidlist->entries].failed_disks.entries].device, strtmp);
1105	mr_free(strtmp);
1106	raidlist->el[raidlist->entries].failed_disks.entries++;
1107	log_it("At least one failed disk found in RAID array.\n");
1108	break;
1109	default: // error
1110	mr_msg(1, "Unknown device type '%c'\n", type);
1111	mr_free(string);
1112	mr_free(token);
1113	return 1;
1114	break;
1115	}
1116	mr_free(token);
1117	}
1118
1119	// adjust index for each device so that it starts with 0 for every type
1120	index_min = 99;
1121	for (i=0; i<raidlist->el[raidlist->entries].data_disks.entries;i++) {
1122	if (raidlist->el[raidlist->entries].data_disks.el[i].index < index_min) {
1123	index_min = raidlist->el[raidlist->entries].data_disks.el[i].index;
1124	}
1125	}
1126	if (index_min > 0) {
1127	for (i=0; i<raidlist->el[raidlist->entries].data_disks.entries;i++) {
1128	raidlist->el[raidlist->entries].data_disks.el[i].index = raidlist->el[raidlist->entries].data_disks.el[i].index - index_min;
1129	}
1130	}
1131	index_min = 99;
1132	for (i=0; i<raidlist->el[raidlist->entries].spare_disks.entries;i++) {
1133	if (raidlist->el[raidlist->entries].spare_disks.el[i].index < index_min) {
1134	index_min = raidlist->el[raidlist->entries].spare_disks.el[i].index;
1135	}
1136	}
1137	if (index_min > 0) {
1138	for (i=0; i<raidlist->el[raidlist->entries].spare_disks.entries;i++) {
1139	raidlist->el[raidlist->entries].spare_disks.el[i].index = raidlist->el[raidlist->entries].spare_disks.el[i].index - index_min;
1140	}
1141	}
1142	index_min = 99;
1143	for (i=0; i<raidlist->el[raidlist->entries].failed_disks.entries;i++) {
1144	if (raidlist->el[raidlist->entries].failed_disks.el[i].index < index_min) {
1145	index_min = raidlist->el[raidlist->entries].failed_disks.el[i].index;
1146	}
1147	}
1148	if (index_min > 0) {
1149	for (i=0; i<raidlist->el[raidlist->entries].failed_disks.entries;i++) {
1150	raidlist->el[raidlist->entries].failed_disks.el[i].index = raidlist->el[raidlist->entries].failed_disks.el[i].index - index_min;
1151	}
1152	}
1153	break;
1154	case 2: // config information
1155	// check for persistent super block
1156	if (strcasestr(string, "super non-persistent")) {
1157	raidlist->el[raidlist->entries].persistent_superblock = 0;
1158	} else {
1159	raidlist->el[raidlist->entries].persistent_superblock = 1;
1160	}
1161	// extract chunk size
1162	if (!(pos = strcasestr(string, "k chunk"))) {
1163	raidlist->el[raidlist->entries].chunk_size = -1;
1164	} else {
1165	while (*pos != ' ') {
1166	pos -= 1;
1167	if (pos < string) {
1168	log_it("String underflow!\n");
1169	mr_free(string);
1170	return 1;
1171	}
1172	}
1173	raidlist->el[raidlist->entries].chunk_size = atoi(pos + 1);
1174	}
1175	// extract parity if present
1176	if ((pos = strcasestr(string, "algorithm"))) {
1177	raidlist->el[raidlist->entries].parity = atoi(pos + 9);
1178	} else {
1179	raidlist->el[raidlist->entries].parity = -1;
1180	}
1181	break;
1182	case 3: // optional build status information
1183	if (!(pos = strchr(string, '\%'))) {
1184	if (strcasestr(string, "delayed")) {
1185	raidlist->el[raidlist->entries].progress = -1; // delayed (therefore, stuck at 0%)
1186	} else {
1187	raidlist->el[raidlist->entries].progress = 999; // not found
1188	}
1189	} else {
1190	while (*pos != ' ') {
1191	pos -= 1;
1192	if (pos < string) {
1193	printf("ERROR: String underflow!\n");
1194	mr_free(string);
1195	return 1;
1196	}
1197	}
1198	raidlist->el[raidlist->entries].progress = atoi(pos);
1199	}
1200	break;
1201	default: // error
1202	mr_msg(1, "Row %d should not occur in record!\n", row);
1203	break;
1204	}
1205	row++;
1206	}
1207	}
1208	// close file
1209	fclose(fin);
1210	// free string
1211	mr_free(string);
1212	// return success
1213	return 0;
1214
1215	}
1216
1217
1218
1219
1220	int create_raidtab_from_mdstat(char *raidtab_fname)
1221	{
1222	struct raidlist_itself *raidlist;
1223	int retval = 0;
1224
1225	raidlist = mr_malloc(sizeof(struct raidlist_itself));
1226
1227	// FIXME: Prefix '/dev/' should really be dynamic!
1228	if (parse_mdstat(raidlist, "/dev/")) {
1229	log_to_screen("Sorry, cannot read %s", MDSTAT_FILE);
1230	return (1);
1231	}
1232
1233	retval += save_raidlist_to_raidtab(raidlist, raidtab_fname);
1234	return (retval);
1235	}
1236
1237
1238
1239	/* @} - end of raidGroup */

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