md_ddf.c revision c2e3819ca878695957fd074a79b0f1341f57860b
1/*-
2 * Copyright (c) 2012 Alexander Motin <mav@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD$");
29
30#include <sys/param.h>
31#include <sys/bio.h>
32#include <sys/endian.h>
33#include <sys/kernel.h>
34#include <sys/kobj.h>
35#include <sys/limits.h>
36#include <sys/lock.h>
37#include <sys/malloc.h>
38#include <sys/mutex.h>
39#include <sys/systm.h>
40#include <sys/time.h>
41#include <sys/clock.h>
42#include <geom/geom.h>
43#include "geom/raid/g_raid.h"
44#include "geom/raid/md_ddf.h"
45#include "g_raid_md_if.h"
46
47static MALLOC_DEFINE(M_MD_DDF, "md_ddf_data", "GEOM_RAID DDF metadata");
48
49#define	DDF_MAX_DISKS_HARD	128
50
51#define	DDF_MAX_DISKS	16
52#define	DDF_MAX_VDISKS	7
53#define	DDF_MAX_PARTITIONS	1
54
55#define DECADE (3600*24*(365*10+2))	/* 10 years in seconds. */
56
57struct ddf_meta {
58	u_int	sectorsize;
59	u_int	bigendian;
60	struct ddf_header *hdr;
61	struct ddf_cd_record *cdr;
62	struct ddf_pd_record *pdr;
63	struct ddf_vd_record *vdr;
64	void *cr;
65	struct ddf_pdd_record *pdd;
66	struct ddf_bbm_log *bbm;
67};
68
69struct ddf_vol_meta {
70	u_int	sectorsize;
71	u_int	bigendian;
72	struct ddf_header *hdr;
73	struct ddf_cd_record *cdr;
74	struct ddf_vd_entry *vde;
75	struct ddf_vdc_record *vdc;
76	struct ddf_vdc_record *bvdc[DDF_MAX_DISKS_HARD];
77};
78
79struct g_raid_md_ddf_perdisk {
80	struct ddf_meta	 pd_meta;
81};
82
83struct g_raid_md_ddf_pervolume {
84	struct ddf_vol_meta		 pv_meta;
85	int				 pv_started;
86	struct callout			 pv_start_co;	/* STARTING state timer. */
87};
88
89struct g_raid_md_ddf_object {
90	struct g_raid_md_object	 mdio_base;
91	u_int			 mdio_bigendian;
92	struct ddf_meta		 mdio_meta;
93	int			 mdio_starting;
94	struct callout		 mdio_start_co;	/* STARTING state timer. */
95	int			 mdio_started;
96	struct root_hold_token	*mdio_rootmount; /* Root mount delay token. */
97};
98
99static g_raid_md_create_req_t g_raid_md_create_req_ddf;
100static g_raid_md_taste_t g_raid_md_taste_ddf;
101static g_raid_md_event_t g_raid_md_event_ddf;
102static g_raid_md_volume_event_t g_raid_md_volume_event_ddf;
103static g_raid_md_ctl_t g_raid_md_ctl_ddf;
104static g_raid_md_write_t g_raid_md_write_ddf;
105static g_raid_md_fail_disk_t g_raid_md_fail_disk_ddf;
106static g_raid_md_free_disk_t g_raid_md_free_disk_ddf;
107static g_raid_md_free_volume_t g_raid_md_free_volume_ddf;
108static g_raid_md_free_t g_raid_md_free_ddf;
109
110static kobj_method_t g_raid_md_ddf_methods[] = {
111	KOBJMETHOD(g_raid_md_create_req,	g_raid_md_create_req_ddf),
112	KOBJMETHOD(g_raid_md_taste,	g_raid_md_taste_ddf),
113	KOBJMETHOD(g_raid_md_event,	g_raid_md_event_ddf),
114	KOBJMETHOD(g_raid_md_volume_event,	g_raid_md_volume_event_ddf),
115	KOBJMETHOD(g_raid_md_ctl,	g_raid_md_ctl_ddf),
116	KOBJMETHOD(g_raid_md_write,	g_raid_md_write_ddf),
117	KOBJMETHOD(g_raid_md_fail_disk,	g_raid_md_fail_disk_ddf),
118	KOBJMETHOD(g_raid_md_free_disk,	g_raid_md_free_disk_ddf),
119	KOBJMETHOD(g_raid_md_free_volume,	g_raid_md_free_volume_ddf),
120	KOBJMETHOD(g_raid_md_free,	g_raid_md_free_ddf),
121	{ 0, 0 }
122};
123
124static struct g_raid_md_class g_raid_md_ddf_class = {
125	"DDF",
126	g_raid_md_ddf_methods,
127	sizeof(struct g_raid_md_ddf_object),
128	.mdc_enable = 1,
129	.mdc_priority = 100
130};
131
132#define GET8(m, f)	((m)->f)
133#define GET16(m, f)	((m)->bigendian ? be16dec(&(m)->f) : le16dec(&(m)->f))
134#define GET32(m, f)	((m)->bigendian ? be32dec(&(m)->f) : le32dec(&(m)->f))
135#define GET64(m, f)	((m)->bigendian ? be64dec(&(m)->f) : le64dec(&(m)->f))
136#define GET8D(m, f)	(f)
137#define GET16D(m, f)	((m)->bigendian ? be16dec(&f) : le16dec(&f))
138#define GET32D(m, f)	((m)->bigendian ? be32dec(&f) : le32dec(&f))
139#define GET64D(m, f)	((m)->bigendian ? be64dec(&f) : le64dec(&f))
140#define GET8P(m, f)	(*(f))
141#define GET16P(m, f)	((m)->bigendian ? be16dec(f) : le16dec(f))
142#define GET32P(m, f)	((m)->bigendian ? be32dec(f) : le32dec(f))
143#define GET64P(m, f)	((m)->bigendian ? be64dec(f) : le64dec(f))
144
145#define SET8P(m, f, v)							\
146	(*(f) = (v))
147#define SET16P(m, f, v)							\
148	do {								\
149		if ((m)->bigendian)					\
150			be16enc((f), (v));				\
151		else							\
152			le16enc((f), (v));				\
153	} while (0)
154#define SET32P(m, f, v)							\
155	do {								\
156		if ((m)->bigendian)					\
157			be32enc((f), (v));				\
158		else							\
159			le32enc((f), (v));				\
160	} while (0)
161#define SET64P(m, f, v)							\
162	do {								\
163		if ((m)->bigendian)					\
164			be64enc((f), (v));				\
165		else							\
166			le64enc((f), (v));				\
167	} while (0)
168#define SET8(m, f, v)	SET8P((m), &((m)->f), (v))
169#define SET16(m, f, v)	SET16P((m), &((m)->f), (v))
170#define SET32(m, f, v)	SET32P((m), &((m)->f), (v))
171#define SET64(m, f, v)	SET64P((m), &((m)->f), (v))
172#define SET8D(m, f, v)	SET8P((m), &(f), (v))
173#define SET16D(m, f, v)	SET16P((m), &(f), (v))
174#define SET32D(m, f, v)	SET32P((m), &(f), (v))
175#define SET64D(m, f, v)	SET64P((m), &(f), (v))
176
177#define GETCRNUM(m)	(GET32((m), hdr->cr_length) /			\
178	GET16((m), hdr->Configuration_Record_Length))
179
180#define GETVDCPTR(m, n)	((struct ddf_vdc_record *)((uint8_t *)(m)->cr +	\
181	(n) * GET16((m), hdr->Configuration_Record_Length) *		\
182	(m)->sectorsize))
183
184#define GETSAPTR(m, n)	((struct ddf_sa_record *)((uint8_t *)(m)->cr +	\
185	(n) * GET16((m), hdr->Configuration_Record_Length) *		\
186	(m)->sectorsize))
187
188static int
189isff(uint8_t *buf, int size)
190{
191	int i;
192
193	for (i = 0; i < size; i++)
194		if (buf[i] != 0xff)
195			return (0);
196	return (1);
197}
198
199static void
200print_guid(uint8_t *buf)
201{
202	int i, ascii;
203
204	ascii = 1;
205	for (i = 0; i < 24; i++) {
206		if (buf[i] != 0 && (buf[i] < ' ' || buf[i] > 127)) {
207			ascii = 0;
208			break;
209		}
210	}
211	if (ascii) {
212		printf("'%.24s'", buf);
213	} else {
214		for (i = 0; i < 24; i++)
215			printf("%02x", buf[i]);
216	}
217}
218
219static void
220g_raid_md_ddf_print(struct ddf_meta *meta)
221{
222	struct ddf_vdc_record *vdc;
223	struct ddf_vuc_record *vuc;
224	struct ddf_sa_record *sa;
225	uint64_t *val2;
226	uint32_t val;
227	int i, j, k, num, num2;
228
229	if (g_raid_debug < 1)
230		return;
231
232	printf("********* DDF Metadata *********\n");
233	printf("**** Header ****\n");
234	printf("DDF_Header_GUID      ");
235	print_guid(meta->hdr->DDF_Header_GUID);
236	printf("\n");
237	printf("DDF_rev              %8.8s\n", (char *)&meta->hdr->DDF_rev[0]);
238	printf("Sequence_Number      0x%08x\n", GET32(meta, hdr->Sequence_Number));
239	printf("TimeStamp            0x%08x\n", GET32(meta, hdr->TimeStamp));
240	printf("Open_Flag            0x%02x\n", GET16(meta, hdr->Open_Flag));
241	printf("Foreign_Flag         0x%02x\n", GET16(meta, hdr->Foreign_Flag));
242	printf("Diskgrouping         0x%02x\n", GET16(meta, hdr->Diskgrouping));
243	printf("Primary_Header_LBA   %ju\n", GET64(meta, hdr->Primary_Header_LBA));
244	printf("Secondary_Header_LBA %ju\n", GET64(meta, hdr->Secondary_Header_LBA));
245	printf("WorkSpace_Length     %u\n", GET32(meta, hdr->WorkSpace_Length));
246	printf("WorkSpace_LBA        %ju\n", GET64(meta, hdr->WorkSpace_LBA));
247	printf("Max_PD_Entries       %u\n", GET16(meta, hdr->Max_PD_Entries));
248	printf("Max_VD_Entries       %u\n", GET16(meta, hdr->Max_VD_Entries));
249	printf("Max_Partitions       %u\n", GET16(meta, hdr->Max_Partitions));
250	printf("Configuration_Record_Length %u\n", GET16(meta, hdr->Configuration_Record_Length));
251	printf("Max_Primary_Element_Entries %u\n", GET16(meta, hdr->Max_Primary_Element_Entries));
252	printf("Controller Data      %u:%u\n", GET32(meta, hdr->cd_section), GET32(meta, hdr->cd_length));
253	printf("Physical Disk        %u:%u\n", GET32(meta, hdr->pdr_section), GET32(meta, hdr->pdr_length));
254	printf("Virtual Disk         %u:%u\n", GET32(meta, hdr->vdr_section), GET32(meta, hdr->vdr_length));
255	printf("Configuration Recs   %u:%u\n", GET32(meta, hdr->cr_section), GET32(meta, hdr->cr_length));
256	printf("Physical Disk Recs   %u:%u\n", GET32(meta, hdr->pdd_section), GET32(meta, hdr->pdd_length));
257	printf("BBM Log              %u:%u\n", GET32(meta, hdr->bbmlog_section), GET32(meta, hdr->bbmlog_length));
258	printf("Diagnostic Space     %u:%u\n", GET32(meta, hdr->Diagnostic_Space), GET32(meta, hdr->Diagnostic_Space_Length));
259	printf("Vendor_Specific_Logs %u:%u\n", GET32(meta, hdr->Vendor_Specific_Logs), GET32(meta, hdr->Vendor_Specific_Logs_Length));
260	printf("**** Controler Data ****\n");
261	printf("Controller_GUID      ");
262	print_guid(meta->cdr->Controller_GUID);
263	printf("\n");
264	printf("Controller_Type      0x%04x%04x 0x%04x%04x\n",
265	    GET16(meta, cdr->Controller_Type.Vendor_ID),
266	    GET16(meta, cdr->Controller_Type.Device_ID),
267	    GET16(meta, cdr->Controller_Type.SubVendor_ID),
268	    GET16(meta, cdr->Controller_Type.SubDevice_ID));
269	printf("Product_ID           '%.16s'\n", (char *)&meta->cdr->Product_ID[0]);
270	printf("**** Physical Disk Records ****\n");
271	printf("Populated_PDEs       %u\n", GET16(meta, pdr->Populated_PDEs));
272	printf("Max_PDE_Supported    %u\n", GET16(meta, pdr->Max_PDE_Supported));
273	for (j = 0; j < GET16(meta, pdr->Populated_PDEs); j++) {
274		if (isff(meta->pdr->entry[j].PD_GUID, 24))
275			continue;
276		if (GET32(meta, pdr->entry[j].PD_Reference) == 0xffffffff)
277			continue;
278		printf("PD_GUID              ");
279		print_guid(meta->pdr->entry[j].PD_GUID);
280		printf("\n");
281		printf("PD_Reference         0x%08x\n",
282		    GET32(meta, pdr->entry[j].PD_Reference));
283		printf("PD_Type              0x%04x\n",
284		    GET16(meta, pdr->entry[j].PD_Type));
285		printf("PD_State             0x%04x\n",
286		    GET16(meta, pdr->entry[j].PD_State));
287		printf("Configured_Size      %ju\n",
288		    GET64(meta, pdr->entry[j].Configured_Size));
289		printf("Block_Size           %u\n",
290		    GET16(meta, pdr->entry[j].Block_Size));
291	}
292	printf("**** Virtual Disk Records ****\n");
293	printf("Populated_VDEs       %u\n", GET16(meta, vdr->Populated_VDEs));
294	printf("Max_VDE_Supported    %u\n", GET16(meta, vdr->Max_VDE_Supported));
295	for (j = 0; j < GET16(meta, vdr->Populated_VDEs); j++) {
296		if (isff(meta->vdr->entry[j].VD_GUID, 24))
297			continue;
298		printf("VD_GUID              ");
299		print_guid(meta->vdr->entry[j].VD_GUID);
300		printf("\n");
301		printf("VD_Number            0x%04x\n",
302		    GET16(meta, vdr->entry[j].VD_Number));
303		printf("VD_Type              0x%04x\n",
304		    GET16(meta, vdr->entry[j].VD_Type));
305		printf("VD_State             0x%02x\n",
306		    GET8(meta, vdr->entry[j].VD_State));
307		printf("Init_State           0x%02x\n",
308		    GET8(meta, vdr->entry[j].Init_State));
309		printf("Drive_Failures_Remaining %u\n",
310		    GET8(meta, vdr->entry[j].Drive_Failures_Remaining));
311		printf("VD_Name              '%.16s'\n",
312		    (char *)&meta->vdr->entry[j].VD_Name);
313	}
314	printf("**** Configuration Records ****\n");
315	num = GETCRNUM(meta);
316	for (j = 0; j < num; j++) {
317		vdc = GETVDCPTR(meta, j);
318		val = GET32D(meta, vdc->Signature);
319		switch (val) {
320		case DDF_VDCR_SIGNATURE:
321			printf("** Virtual Disk Configuration **\n");
322			printf("VD_GUID              ");
323			print_guid(vdc->VD_GUID);
324			printf("\n");
325			printf("Timestamp            0x%08x\n",
326			    GET32D(meta, vdc->Timestamp));
327			printf("Sequence_Number      0x%08x\n",
328			    GET32D(meta, vdc->Sequence_Number));
329			printf("Primary_Element_Count %u\n",
330			    GET16D(meta, vdc->Primary_Element_Count));
331			printf("Stripe_Size          %u\n",
332			    GET8D(meta, vdc->Stripe_Size));
333			printf("Primary_RAID_Level   0x%02x\n",
334			    GET8D(meta, vdc->Primary_RAID_Level));
335			printf("RLQ                  0x%02x\n",
336			    GET8D(meta, vdc->RLQ));
337			printf("Secondary_Element_Count %u\n",
338			    GET8D(meta, vdc->Secondary_Element_Count));
339			printf("Secondary_Element_Seq %u\n",
340			    GET8D(meta, vdc->Secondary_Element_Seq));
341			printf("Secondary_RAID_Level 0x%02x\n",
342			    GET8D(meta, vdc->Secondary_RAID_Level));
343			printf("Block_Count          %ju\n",
344			    GET64D(meta, vdc->Block_Count));
345			printf("VD_Size              %ju\n",
346			    GET64D(meta, vdc->VD_Size));
347			printf("Block_Size           %u\n",
348			    GET16D(meta, vdc->Block_Size));
349			printf("Rotate_Parity_count  %u\n",
350			    GET8D(meta, vdc->Rotate_Parity_count));
351			printf("Associated_Spare_Disks");
352			for (i = 0; i < 8; i++) {
353				if (GET32D(meta, vdc->Associated_Spares[i]) != 0xffffffff)
354					printf(" 0x%08x", GET32D(meta, vdc->Associated_Spares[i]));
355			}
356			printf("\n");
357			printf("Cache_Flags          %016jx\n",
358			    GET64D(meta, vdc->Cache_Flags));
359			printf("BG_Rate              %u\n",
360			    GET8D(meta, vdc->BG_Rate));
361			printf("MDF_Parity_Disks     %u\n",
362			    GET8D(meta, vdc->MDF_Parity_Disks));
363			printf("MDF_Parity_Generator_Polynomial 0x%04x\n",
364			    GET16D(meta, vdc->MDF_Parity_Generator_Polynomial));
365			printf("MDF_Constant_Generation_Method 0x%02x\n",
366			    GET8D(meta, vdc->MDF_Constant_Generation_Method));
367			printf("Physical_Disks      ");
368			num2 = GET16D(meta, vdc->Primary_Element_Count);
369			val2 = (uint64_t *)&(vdc->Physical_Disk_Sequence[GET16(meta, hdr->Max_Primary_Element_Entries)]);
370			for (i = 0; i < num2; i++)
371				printf(" 0x%08x @ %ju",
372				    GET32D(meta, vdc->Physical_Disk_Sequence[i]),
373				    GET64P(meta, val2 + i));
374			printf("\n");
375			break;
376		case DDF_VUCR_SIGNATURE:
377			printf("** Vendor Unique Configuration **\n");
378			vuc = (struct ddf_vuc_record *)vdc;
379			printf("VD_GUID              ");
380			print_guid(vuc->VD_GUID);
381			printf("\n");
382			break;
383		case DDF_SA_SIGNATURE:
384			printf("** Spare Assignment Configuration **\n");
385			sa = (struct ddf_sa_record *)vdc;
386			printf("Timestamp            0x%08x\n",
387			    GET32D(meta, sa->Timestamp));
388			printf("Spare_Type           0x%02x\n",
389			    GET8D(meta, sa->Spare_Type));
390			printf("Populated_SAEs       %u\n",
391			    GET16D(meta, sa->Populated_SAEs));
392			printf("MAX_SAE_Supported    %u\n",
393			    GET16D(meta, sa->MAX_SAE_Supported));
394			for (i = 0; i < GET16D(meta, sa->Populated_SAEs); i++) {
395				if (isff(sa->entry[i].VD_GUID, 24))
396					continue;
397				printf("VD_GUID             ");
398				for (k = 0; k < 24; k++)
399					printf("%02x", sa->entry[i].VD_GUID[k]);
400				printf("\n");
401				printf("Secondary_Element   %u\n",
402				    GET16D(meta, sa->entry[i].Secondary_Element));
403			}
404			break;
405		case 0x00000000:
406		case 0xFFFFFFFF:
407			break;
408		default:
409			printf("Unknown configuration signature %08x\n", val);
410			break;
411		}
412	}
413	printf("**** Physical Disk Data ****\n");
414	printf("PD_GUID              ");
415	print_guid(meta->pdd->PD_GUID);
416	printf("\n");
417	printf("PD_Reference         0x%08x\n",
418	    GET32(meta, pdd->PD_Reference));
419	printf("Forced_Ref_Flag      0x%02x\n",
420	    GET8(meta, pdd->Forced_Ref_Flag));
421	printf("Forced_PD_GUID_Flag  0x%02x\n",
422	    GET8(meta, pdd->Forced_PD_GUID_Flag));
423}
424
425static int
426ddf_meta_find_pd(struct ddf_meta *meta, uint8_t *GUID, uint32_t PD_Reference)
427{
428	int i;
429
430	for (i = 0; i < GET16(meta, pdr->Populated_PDEs); i++) {
431		if (GUID != NULL) {
432			if (memcmp(meta->pdr->entry[i].PD_GUID, GUID, 24) == 0)
433				return (i);
434		} else if (PD_Reference != 0xffffffff) {
435			if (GET32(meta, pdr->entry[i].PD_Reference) == PD_Reference)
436				return (i);
437		} else
438			if (isff(meta->pdr->entry[i].PD_GUID, 24))
439				return (i);
440	}
441	if (GUID == NULL && PD_Reference == 0xffffffff) {
442		if (i >= GET16(meta, pdr->Max_PDE_Supported))
443			return (-1);
444		SET16(meta, pdr->Populated_PDEs, i + 1);
445		return (i);
446	}
447	return (-1);
448}
449
450static int
451ddf_meta_find_vd(struct ddf_meta *meta, uint8_t *GUID)
452{
453	int i;
454
455	for (i = 0; i < GET16(meta, vdr->Populated_VDEs); i++) {
456		if (GUID != NULL) {
457			if (memcmp(meta->vdr->entry[i].VD_GUID, GUID, 24) == 0)
458				return (i);
459		} else
460			if (isff(meta->vdr->entry[i].VD_GUID, 24))
461				return (i);
462	}
463	if (GUID == NULL) {
464		if (i >= GET16(meta, vdr->Max_VDE_Supported))
465			return (-1);
466		SET16(meta, vdr->Populated_VDEs, i + 1);
467		return (i);
468	}
469	return (-1);
470}
471
472static struct ddf_vdc_record *
473ddf_meta_find_vdc(struct ddf_meta *meta, uint8_t *GUID)
474{
475	struct ddf_vdc_record *vdc;
476	int i, num;
477
478	num = GETCRNUM(meta);
479	for (i = 0; i < num; i++) {
480		vdc = GETVDCPTR(meta, i);
481		if (GUID != NULL) {
482			if (GET32D(meta, vdc->Signature) == DDF_VDCR_SIGNATURE &&
483			    memcmp(vdc->VD_GUID, GUID, 24) == 0)
484				return (vdc);
485		} else
486			if (GET32D(meta, vdc->Signature) == 0xffffffff ||
487			    GET32D(meta, vdc->Signature) == 0)
488				return (vdc);
489	}
490	return (NULL);
491}
492
493static int
494ddf_meta_count_vdc(struct ddf_meta *meta, uint8_t *GUID)
495{
496	struct ddf_vdc_record *vdc;
497	int i, num, cnt;
498
499	cnt = 0;
500	num = GETCRNUM(meta);
501	for (i = 0; i < num; i++) {
502		vdc = GETVDCPTR(meta, i);
503		if (GET32D(meta, vdc->Signature) != DDF_VDCR_SIGNATURE)
504			continue;
505		if (GUID == NULL || memcmp(vdc->VD_GUID, GUID, 24) == 0)
506			cnt++;
507	}
508	return (cnt);
509}
510
511static int
512ddf_meta_find_disk(struct ddf_vol_meta *vmeta, uint32_t PD_Reference,
513    int *bvdp, int *posp)
514{
515	int i, bvd, pos;
516
517	i = 0;
518	for (bvd = 0; bvd < GET8(vmeta, vdc->Secondary_Element_Count); bvd++) {
519		if (vmeta->bvdc[bvd] == NULL) {
520			i += GET16(vmeta, vdc->Primary_Element_Count); // XXX
521			continue;
522		}
523		for (pos = 0; pos < GET16(vmeta, bvdc[bvd]->Primary_Element_Count);
524		    pos++, i++) {
525			if (GET32(vmeta, bvdc[bvd]->Physical_Disk_Sequence[pos]) ==
526			    PD_Reference) {
527				if (bvdp != NULL)
528					*bvdp = bvd;
529				if (posp != NULL)
530					*posp = pos;
531				return (i);
532			}
533		}
534	}
535	return (-1);
536}
537
538static struct ddf_sa_record *
539ddf_meta_find_sa(struct ddf_meta *meta, int create)
540{
541	struct ddf_sa_record *sa;
542	int i, num;
543
544	num = GETCRNUM(meta);
545	for (i = 0; i < num; i++) {
546		sa = GETSAPTR(meta, i);
547		if (GET32D(meta, sa->Signature) == DDF_SA_SIGNATURE)
548			return (sa);
549	}
550	if (create) {
551		for (i = 0; i < num; i++) {
552			sa = GETSAPTR(meta, i);
553			if (GET32D(meta, sa->Signature) == 0xffffffff ||
554			    GET32D(meta, sa->Signature) == 0)
555				return (sa);
556		}
557	}
558	return (NULL);
559}
560
561static void
562ddf_meta_create(struct g_raid_disk *disk, struct ddf_meta *sample)
563{
564	struct timespec ts;
565	struct clocktime ct;
566	struct g_raid_md_ddf_perdisk *pd;
567	struct g_raid_md_ddf_object *mdi;
568	struct ddf_meta *meta;
569	struct ddf_pd_entry *pde;
570	off_t anchorlba;
571	u_int ss, pos, size;
572	int len, error;
573	char serial_buffer[24];
574
575	if (sample->hdr == NULL)
576		sample = NULL;
577
578	mdi = (struct g_raid_md_ddf_object *)disk->d_softc->sc_md;
579	pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
580	meta = &pd->pd_meta;
581	ss = disk->d_consumer->provider->sectorsize;
582	anchorlba = disk->d_consumer->provider->mediasize / ss - 1;
583
584	meta->sectorsize = ss;
585	meta->bigendian = sample ? sample->bigendian : mdi->mdio_bigendian;
586	getnanotime(&ts);
587	clock_ts_to_ct(&ts, &ct);
588
589	/* Header */
590	meta->hdr = malloc(ss, M_MD_DDF, M_WAITOK);
591	memset(meta->hdr, 0xff, ss);
592	if (sample) {
593		memcpy(meta->hdr, sample->hdr, sizeof(struct ddf_header));
594		if (ss != sample->sectorsize) {
595			SET32(meta, hdr->WorkSpace_Length,
596			    (GET32(sample, hdr->WorkSpace_Length) *
597			    sample->sectorsize + ss - 1) / ss);
598			SET16(meta, hdr->Configuration_Record_Length,
599			    (GET16(sample, hdr->Configuration_Record_Length) *
600			    sample->sectorsize + ss - 1) / ss);
601			SET32(meta, hdr->cd_length,
602			    (GET32(sample, hdr->cd_length) *
603			    sample->sectorsize + ss - 1) / ss);
604			SET32(meta, hdr->pdr_length,
605			    (GET32(sample, hdr->pdr_length) *
606			    sample->sectorsize + ss - 1) / ss);
607			SET32(meta, hdr->vdr_length,
608			    (GET32(sample, hdr->vdr_length) *
609			    sample->sectorsize + ss - 1) / ss);
610			SET32(meta, hdr->cr_length,
611			    (GET32(sample, hdr->cr_length) *
612			    sample->sectorsize + ss - 1) / ss);
613			SET32(meta, hdr->pdd_length,
614			    (GET32(sample, hdr->pdd_length) *
615			    sample->sectorsize + ss - 1) / ss);
616			SET32(meta, hdr->bbmlog_length,
617			    (GET32(sample, hdr->bbmlog_length) *
618			    sample->sectorsize + ss - 1) / ss);
619			SET32(meta, hdr->Diagnostic_Space,
620			    (GET32(sample, hdr->bbmlog_length) *
621			    sample->sectorsize + ss - 1) / ss);
622			SET32(meta, hdr->Vendor_Specific_Logs,
623			    (GET32(sample, hdr->bbmlog_length) *
624			    sample->sectorsize + ss - 1) / ss);
625		}
626	} else {
627		SET32(meta, hdr->Signature, DDF_HEADER_SIGNATURE);
628		snprintf(meta->hdr->DDF_Header_GUID, 25, "FreeBSD %08x%08x",
629		    (u_int)(ts.tv_sec - DECADE), arc4random());
630		memcpy(meta->hdr->DDF_rev, "02.00.00", 8);
631		SET32(meta, hdr->TimeStamp, (ts.tv_sec - DECADE));
632		SET32(meta, hdr->WorkSpace_Length, 16 * 1024 * 1024 / ss);
633		SET16(meta, hdr->Max_PD_Entries, DDF_MAX_DISKS - 1);
634		SET16(meta, hdr->Max_VD_Entries, DDF_MAX_VDISKS);
635		SET16(meta, hdr->Max_Partitions, DDF_MAX_PARTITIONS);
636		SET16(meta, hdr->Max_Primary_Element_Entries, DDF_MAX_DISKS);
637		SET16(meta, hdr->Configuration_Record_Length,
638		    (sizeof(struct ddf_vdc_record) +
639		     (4 + 8) * GET16(meta, hdr->Max_Primary_Element_Entries) +
640		     ss - 1) / ss);
641		SET32(meta, hdr->cd_length,
642		    (sizeof(struct ddf_cd_record) + ss - 1) / ss);
643		SET32(meta, hdr->pdr_length,
644		    (sizeof(struct ddf_pd_record) +
645		     sizeof(struct ddf_pd_entry) *
646		     GET16(meta, hdr->Max_PD_Entries) + ss - 1) / ss);
647		SET32(meta, hdr->vdr_length,
648		    (sizeof(struct ddf_vd_record) +
649		     sizeof(struct ddf_vd_entry) *
650		     GET16(meta, hdr->Max_VD_Entries) + ss - 1) / ss);
651		SET32(meta, hdr->cr_length,
652		    GET16(meta, hdr->Configuration_Record_Length) *
653		    (GET16(meta, hdr->Max_Partitions) + 1));
654		SET32(meta, hdr->pdd_length,
655		    (sizeof(struct ddf_pdd_record) + ss - 1) / ss);
656		SET32(meta, hdr->bbmlog_length, 0);
657		SET32(meta, hdr->Diagnostic_Space_Length, 0);
658		SET32(meta, hdr->Vendor_Specific_Logs_Length, 0);
659	}
660	pos = 1;
661	SET32(meta, hdr->cd_section, pos);
662	pos += GET32(meta, hdr->cd_length);
663	SET32(meta, hdr->pdr_section, pos);
664	pos += GET32(meta, hdr->pdr_length);
665	SET32(meta, hdr->vdr_section, pos);
666	pos += GET32(meta, hdr->vdr_length);
667	SET32(meta, hdr->cr_section, pos);
668	pos += GET32(meta, hdr->cr_length);
669	SET32(meta, hdr->pdd_section, pos);
670	pos += GET32(meta, hdr->pdd_length);
671	SET32(meta, hdr->bbmlog_section,
672	    GET32(meta, hdr->bbmlog_length) != 0 ? pos : 0xffffffff);
673	pos += GET32(meta, hdr->bbmlog_length);
674	SET32(meta, hdr->Diagnostic_Space,
675	    GET32(meta, hdr->Diagnostic_Space_Length) != 0 ? pos : 0xffffffff);
676	pos += GET32(meta, hdr->Diagnostic_Space_Length);
677	SET32(meta, hdr->Vendor_Specific_Logs,
678	    GET32(meta, hdr->Vendor_Specific_Logs_Length) != 0 ? pos : 0xffffffff);
679	pos += min(GET32(meta, hdr->Vendor_Specific_Logs_Length), 1);
680	SET64(meta, hdr->Primary_Header_LBA,
681	    anchorlba - pos);
682	SET64(meta, hdr->Secondary_Header_LBA,
683	    0xffffffffffffffffULL);
684	SET64(meta, hdr->WorkSpace_LBA,
685	    anchorlba + 1 - 32 * 1024 * 1024 / ss);
686
687	/* Controller Data */
688	size = GET32(meta, hdr->cd_length) * ss;
689	meta->cdr = malloc(size, M_MD_DDF, M_WAITOK);
690	memset(meta->cdr, 0xff, size);
691	SET32(meta, cdr->Signature, DDF_CONTROLLER_DATA_SIGNATURE);
692	memcpy(meta->cdr->Controller_GUID, "FreeBSD GEOM RAID SERIAL", 24);
693	memcpy(meta->cdr->Product_ID, "FreeBSD GEOMRAID", 16);
694
695	/* Physical Drive Records. */
696	size = GET32(meta, hdr->pdr_length) * ss;
697	meta->pdr = malloc(size, M_MD_DDF, M_WAITOK);
698	memset(meta->pdr, 0xff, size);
699	SET32(meta, pdr->Signature, DDF_PDR_SIGNATURE);
700	SET16(meta, pdr->Populated_PDEs, 1);
701	SET16(meta, pdr->Max_PDE_Supported,
702	    GET16(meta, hdr->Max_PD_Entries));
703
704	pde = &meta->pdr->entry[0];
705	len = sizeof(serial_buffer);
706	error = g_io_getattr("GEOM::ident", disk->d_consumer, &len, serial_buffer);
707	if (error == 0 && (len = strlen (serial_buffer)) >= 6 && len <= 20)
708		snprintf(pde->PD_GUID, 25, "DISK%20s", serial_buffer);
709	else
710		snprintf(pde->PD_GUID, 25, "DISK%04d%02d%02d%08x%04x",
711		    ct.year, ct.mon, ct.day,
712		    arc4random(), arc4random() & 0xffff);
713	SET32D(meta, pde->PD_Reference, arc4random());
714	SET16D(meta, pde->PD_Type, DDF_PDE_GUID_FORCE);
715	SET16D(meta, pde->PD_State, 0);
716	SET64D(meta, pde->Configured_Size,
717	    anchorlba + 1 - 32 * 1024 * 1024 / ss);
718	SET16D(meta, pde->Block_Size, ss);
719
720	/* Virtual Drive Records. */
721	size = GET32(meta, hdr->vdr_length) * ss;
722	meta->vdr = malloc(size, M_MD_DDF, M_WAITOK);
723	memset(meta->vdr, 0xff, size);
724	SET32(meta, vdr->Signature, DDF_VD_RECORD_SIGNATURE);
725	SET32(meta, vdr->Populated_VDEs, 0);
726	SET16(meta, vdr->Max_VDE_Supported,
727	    GET16(meta, hdr->Max_VD_Entries));
728
729	/* Configuration Records. */
730	size = GET32(meta, hdr->cr_length) * ss;
731	meta->cr = malloc(size, M_MD_DDF, M_WAITOK);
732	memset(meta->cr, 0xff, size);
733
734	/* Physical Disk Data. */
735	size = GET32(meta, hdr->pdd_length) * ss;
736	meta->pdd = malloc(size, M_MD_DDF, M_WAITOK);
737	memset(meta->pdd, 0xff, size);
738	SET32(meta, pdd->Signature, DDF_PDD_SIGNATURE);
739	memcpy(meta->pdd->PD_GUID, pde->PD_GUID, 24);
740	SET32(meta, pdd->PD_Reference, GET32D(meta, pde->PD_Reference));
741	SET8(meta, pdd->Forced_Ref_Flag, DDF_PDD_FORCED_REF);
742	SET8(meta, pdd->Forced_PD_GUID_Flag, DDF_PDD_FORCED_GUID);
743
744	/* Bad Block Management Log. */
745	if (GET32(meta, hdr->bbmlog_length) != 0) {
746		size = GET32(meta, hdr->bbmlog_length) * ss;
747		meta->bbm = malloc(size, M_MD_DDF, M_WAITOK);
748		memset(meta->bbm, 0xff, size);
749		SET32(meta, bbm->Signature, DDF_BBML_SIGNATURE);
750		SET32(meta, bbm->Entry_Count, 0);
751		SET32(meta, bbm->Spare_Block_Count, 0);
752	}
753}
754
755static void
756ddf_meta_copy(struct ddf_meta *dst, struct ddf_meta *src)
757{
758	struct ddf_header *hdr;
759	u_int ss;
760
761	hdr = src->hdr;
762	dst->bigendian = src->bigendian;
763	ss = dst->sectorsize = src->sectorsize;
764	dst->hdr = malloc(ss, M_MD_DDF, M_WAITOK);
765	memcpy(dst->hdr, src->hdr, ss);
766	dst->cdr = malloc(GET32(src, hdr->cd_length) * ss, M_MD_DDF, M_WAITOK);
767	memcpy(dst->cdr, src->cdr, GET32(src, hdr->cd_length) * ss);
768	dst->pdr = malloc(GET32(src, hdr->pdr_length) * ss, M_MD_DDF, M_WAITOK);
769	memcpy(dst->pdr, src->pdr, GET32(src, hdr->pdr_length) * ss);
770	dst->vdr = malloc(GET32(src, hdr->vdr_length) * ss, M_MD_DDF, M_WAITOK);
771	memcpy(dst->vdr, src->vdr, GET32(src, hdr->vdr_length) * ss);
772	dst->cr = malloc(GET32(src, hdr->cr_length) * ss, M_MD_DDF, M_WAITOK);
773	memcpy(dst->cr, src->cr, GET32(src, hdr->cr_length) * ss);
774	dst->pdd = malloc(GET32(src, hdr->pdd_length) * ss, M_MD_DDF, M_WAITOK);
775	memcpy(dst->pdd, src->pdd, GET32(src, hdr->pdd_length) * ss);
776	if (src->bbm != NULL) {
777		dst->bbm = malloc(GET32(src, hdr->bbmlog_length) * ss, M_MD_DDF, M_WAITOK);
778		memcpy(dst->bbm, src->bbm, GET32(src, hdr->bbmlog_length) * ss);
779	}
780}
781
782static void
783ddf_meta_update(struct ddf_meta *meta, struct ddf_meta *src)
784{
785	struct ddf_pd_entry *pde, *spde;
786	int i, j;
787
788	for (i = 0; i < GET16(src, pdr->Populated_PDEs); i++) {
789		spde = &src->pdr->entry[i];
790		if (isff(spde->PD_GUID, 24))
791			continue;
792		j = ddf_meta_find_pd(meta, NULL,
793		    GET32(src, pdr->entry[i].PD_Reference));
794		if (j < 0) {
795			j = ddf_meta_find_pd(meta, NULL, 0xffffffff);
796			pde = &meta->pdr->entry[j];
797			memcpy(pde, spde, sizeof(*pde));
798		} else {
799			pde = &meta->pdr->entry[j];
800			SET16D(meta, pde->PD_State,
801			    GET16D(meta, pde->PD_State) |
802			    GET16D(src, pde->PD_State));
803		}
804	}
805}
806
807static void
808ddf_meta_free(struct ddf_meta *meta)
809{
810
811	if (meta->hdr != NULL) {
812		free(meta->hdr, M_MD_DDF);
813		meta->hdr = NULL;
814	}
815	if (meta->cdr != NULL) {
816		free(meta->cdr, M_MD_DDF);
817		meta->cdr = NULL;
818	}
819	if (meta->pdr != NULL) {
820		free(meta->pdr, M_MD_DDF);
821		meta->pdr = NULL;
822	}
823	if (meta->vdr != NULL) {
824		free(meta->vdr, M_MD_DDF);
825		meta->vdr = NULL;
826	}
827	if (meta->cr != NULL) {
828		free(meta->cr, M_MD_DDF);
829		meta->cr = NULL;
830	}
831	if (meta->pdd != NULL) {
832		free(meta->pdd, M_MD_DDF);
833		meta->pdd = NULL;
834	}
835	if (meta->bbm != NULL) {
836		free(meta->bbm, M_MD_DDF);
837		meta->bbm = NULL;
838	}
839}
840
841static void
842ddf_vol_meta_create(struct ddf_vol_meta *meta, struct ddf_meta *sample)
843{
844	struct timespec ts;
845	struct clocktime ct;
846	struct ddf_header *hdr;
847	u_int ss, size;
848
849	hdr = sample->hdr;
850	meta->bigendian = sample->bigendian;
851	ss = meta->sectorsize = sample->sectorsize;
852	meta->hdr = malloc(ss, M_MD_DDF, M_WAITOK);
853	memcpy(meta->hdr, sample->hdr, ss);
854	meta->cdr = malloc(GET32(sample, hdr->cd_length) * ss, M_MD_DDF, M_WAITOK);
855	memcpy(meta->cdr, sample->cdr, GET32(sample, hdr->cd_length) * ss);
856	meta->vde = malloc(sizeof(struct ddf_vd_entry), M_MD_DDF, M_WAITOK);
857	memset(meta->vde, 0xff, sizeof(struct ddf_vd_entry));
858	getnanotime(&ts);
859	clock_ts_to_ct(&ts, &ct);
860	snprintf(meta->vde->VD_GUID, 25, "FreeBSD%04d%02d%02d%08x%01x",
861	    ct.year, ct.mon, ct.day,
862	    arc4random(), arc4random() & 0xf);
863	size = GET16(sample, hdr->Configuration_Record_Length) * ss;
864	meta->vdc = malloc(size, M_MD_DDF, M_WAITOK);
865	memset(meta->vdc, 0xff, size);
866	SET32(meta, vdc->Signature, DDF_VDCR_SIGNATURE);
867	memcpy(meta->vdc->VD_GUID, meta->vde->VD_GUID, 24);
868	SET32(meta, vdc->Sequence_Number, 0);
869}
870
871static void
872ddf_vol_meta_update(struct ddf_vol_meta *dst, struct ddf_meta *src,
873    uint8_t *GUID, int started)
874{
875	struct ddf_header *hdr;
876	struct ddf_vd_entry *vde;
877	struct ddf_vdc_record *vdc;
878	int vnew, bvnew, bvd, size;
879	u_int ss;
880
881	hdr = src->hdr;
882	vde = &src->vdr->entry[ddf_meta_find_vd(src, GUID)];
883	vdc = ddf_meta_find_vdc(src, GUID);
884	if (GET8D(src, vdc->Secondary_Element_Count) == 1)
885		bvd = 0;
886	else
887		bvd = GET8D(src, vdc->Secondary_Element_Seq);
888	size = GET16(src, hdr->Configuration_Record_Length) * src->sectorsize;
889
890	if (dst->vdc == NULL ||
891	    (!started && ((int32_t)(GET32D(src, vdc->Sequence_Number) -
892	    GET32(dst, vdc->Sequence_Number))) > 0))
893		vnew = 1;
894	else
895		vnew = 0;
896
897	if (dst->bvdc[bvd] == NULL ||
898	    (!started && ((int32_t)(GET32D(src, vdc->Sequence_Number) -
899	    GET32(dst, bvdc[bvd]->Sequence_Number))) > 0))
900		bvnew = 1;
901	else
902		bvnew = 0;
903
904	if (vnew) {
905		dst->bigendian = src->bigendian;
906		ss = dst->sectorsize = src->sectorsize;
907		if (dst->hdr != NULL)
908			free(dst->hdr, M_MD_DDF);
909		dst->hdr = malloc(ss, M_MD_DDF, M_WAITOK);
910		memcpy(dst->hdr, src->hdr, ss);
911		if (dst->cdr != NULL)
912			free(dst->cdr, M_MD_DDF);
913		dst->cdr = malloc(GET32(src, hdr->cd_length) * ss, M_MD_DDF, M_WAITOK);
914		memcpy(dst->cdr, src->cdr, GET32(src, hdr->cd_length) * ss);
915		if (dst->vde != NULL)
916			free(dst->vde, M_MD_DDF);
917		dst->vde = malloc(sizeof(struct ddf_vd_entry), M_MD_DDF, M_WAITOK);
918		memcpy(dst->vde, vde, sizeof(struct ddf_vd_entry));
919		if (dst->vdc != NULL)
920			free(dst->vdc, M_MD_DDF);
921		dst->vdc = malloc(size, M_MD_DDF, M_WAITOK);
922		memcpy(dst->vdc, vdc, size);
923	}
924	if (bvnew) {
925		if (dst->bvdc[bvd] != NULL)
926			free(dst->bvdc[bvd], M_MD_DDF);
927		dst->bvdc[bvd] = malloc(size, M_MD_DDF, M_WAITOK);
928		memcpy(dst->bvdc[bvd], vdc, size);
929	}
930}
931
932static void
933ddf_vol_meta_free(struct ddf_vol_meta *meta)
934{
935	int i;
936
937	if (meta->hdr != NULL) {
938		free(meta->hdr, M_MD_DDF);
939		meta->hdr = NULL;
940	}
941	if (meta->cdr != NULL) {
942		free(meta->cdr, M_MD_DDF);
943		meta->cdr = NULL;
944	}
945	if (meta->vde != NULL) {
946		free(meta->vde, M_MD_DDF);
947		meta->vde = NULL;
948	}
949	if (meta->vdc != NULL) {
950		free(meta->vdc, M_MD_DDF);
951		meta->vdc = NULL;
952	}
953	for (i = 0; i < DDF_MAX_DISKS_HARD; i++) {
954		if (meta->bvdc[i] != NULL) {
955			free(meta->bvdc[i], M_MD_DDF);
956			meta->bvdc[i] = NULL;
957		}
958	}
959}
960
961static int
962ddf_meta_unused_range(struct ddf_meta *meta, off_t *off, off_t *size)
963{
964	struct ddf_vdc_record *vdc;
965	off_t beg[32], end[32], beg1, end1;
966	uint64_t *offp;
967	int i, j, n, num, pos;
968	uint32_t ref;
969
970	*off = 0;
971	*size = 0;
972	ref = GET32(meta, pdd->PD_Reference);
973	pos = ddf_meta_find_pd(meta, NULL, ref);
974	beg[0] = 0;
975	end[0] = GET64(meta, pdr->entry[pos].Configured_Size);
976	n = 1;
977	num = GETCRNUM(meta);
978	for (i = 0; i < num; i++) {
979		vdc = GETVDCPTR(meta, i);
980		if (GET32D(meta, vdc->Signature) != DDF_VDCR_SIGNATURE)
981			continue;
982		for (pos = 0; pos < GET16D(meta, vdc->Primary_Element_Count); pos++)
983			if (GET32D(meta, vdc->Physical_Disk_Sequence[pos]) == ref)
984				break;
985		if (pos == GET16D(meta, vdc->Primary_Element_Count))
986			continue;
987		offp = (uint64_t *)&(vdc->Physical_Disk_Sequence[
988		    GET16(meta, hdr->Max_Primary_Element_Entries)]);
989		beg1 = GET64P(meta, offp + pos);
990		end1 = beg1 + GET64D(meta, vdc->Block_Count);
991		for (j = 0; j < n; j++) {
992			if (beg[j] >= end1 || end[j] <= beg1 )
993				continue;
994			if (beg[j] < beg1 && end[j] > end1) {
995				beg[n] = end1;
996				end[n] = end[j];
997				end[j] = beg1;
998				n++;
999			} else if (beg[j] < beg1)
1000				end[j] = beg1;
1001			else
1002				beg[j] = end1;
1003		}
1004	}
1005	for (j = 0; j < n; j++) {
1006		if (end[j] - beg[j] > *size) {
1007			*off = beg[j];
1008			*size = end[j] - beg[j];
1009		}
1010	}
1011	return ((*size > 0) ? 1 : 0);
1012}
1013
1014static void
1015ddf_meta_get_name(struct ddf_meta *meta, int num, char *buf)
1016{
1017	const char *b;
1018	int i;
1019
1020	b = meta->vdr->entry[num].VD_Name;
1021	for (i = 15; i >= 0; i--)
1022		if (b[i] != 0x20)
1023			break;
1024	memcpy(buf, b, i + 1);
1025	buf[i + 1] = 0;
1026}
1027
1028static void
1029ddf_meta_put_name(struct ddf_vol_meta *meta, char *buf)
1030{
1031	int len;
1032
1033	len = min(strlen(buf), 16);
1034	memset(meta->vde->VD_Name, 0x20, 16);
1035	memcpy(meta->vde->VD_Name, buf, len);
1036}
1037
1038static int
1039ddf_meta_read(struct g_consumer *cp, struct ddf_meta *meta)
1040{
1041	struct g_provider *pp;
1042	struct ddf_header *ahdr, *hdr;
1043	char *abuf, *buf;
1044	off_t plba, slba, lba;
1045	int error, len, i;
1046	u_int ss;
1047	uint32_t val;
1048
1049	ddf_meta_free(meta);
1050	pp = cp->provider;
1051	ss = meta->sectorsize = pp->sectorsize;
1052	/* Read anchor block. */
1053	abuf = g_read_data(cp, pp->mediasize - ss, ss, &error);
1054	if (abuf == NULL) {
1055		G_RAID_DEBUG(1, "Cannot read metadata from %s (error=%d).",
1056		    pp->name, error);
1057		return (error);
1058	}
1059	ahdr = (struct ddf_header *)abuf;
1060
1061	/* Check if this is an DDF RAID struct */
1062	if (be32dec(&ahdr->Signature) == DDF_HEADER_SIGNATURE)
1063		meta->bigendian = 1;
1064	else if (le32dec(&ahdr->Signature) == DDF_HEADER_SIGNATURE)
1065		meta->bigendian = 0;
1066	else {
1067		G_RAID_DEBUG(1, "DDF signature check failed on %s", pp->name);
1068		error = EINVAL;
1069		goto done;
1070	}
1071	if (ahdr->Header_Type != DDF_HEADER_ANCHOR) {
1072		G_RAID_DEBUG(1, "DDF header type check failed on %s", pp->name);
1073		error = EINVAL;
1074		goto done;
1075	}
1076	meta->hdr = ahdr;
1077	plba = GET64(meta, hdr->Primary_Header_LBA);
1078	slba = GET64(meta, hdr->Secondary_Header_LBA);
1079	val = GET32(meta, hdr->CRC);
1080	SET32(meta, hdr->CRC, 0xffffffff);
1081	meta->hdr = NULL;
1082	if (crc32(ahdr, ss) != val) {
1083		G_RAID_DEBUG(1, "DDF CRC mismatch on %s", pp->name);
1084		error = EINVAL;
1085		goto done;
1086	}
1087	if ((plba + 6) * ss >= pp->mediasize) {
1088		G_RAID_DEBUG(1, "DDF primary header LBA is wrong on %s", pp->name);
1089		error = EINVAL;
1090		goto done;
1091	}
1092	if (slba != -1 && (slba + 6) * ss >= pp->mediasize) {
1093		G_RAID_DEBUG(1, "DDF secondary header LBA is wrong on %s", pp->name);
1094		error = EINVAL;
1095		goto done;
1096	}
1097	lba = plba;
1098
1099doread:
1100	error = 0;
1101	ddf_meta_free(meta);
1102
1103	/* Read header block. */
1104	buf = g_read_data(cp, lba * ss, ss, &error);
1105	if (buf == NULL) {
1106readerror:
1107		G_RAID_DEBUG(1, "DDF %s metadata read error on %s (error=%d).",
1108		    (lba == plba) ? "primary" : "secondary", pp->name, error);
1109		if (lba == plba && slba != -1) {
1110			lba = slba;
1111			goto doread;
1112		}
1113		G_RAID_DEBUG(1, "DDF metadata read error on %s.", pp->name);
1114		goto done;
1115	}
1116	meta->hdr = malloc(ss, M_MD_DDF, M_WAITOK);
1117	memcpy(meta->hdr, buf, ss);
1118	g_free(buf);
1119	hdr = meta->hdr;
1120	val = GET32(meta, hdr->CRC);
1121	SET32(meta, hdr->CRC, 0xffffffff);
1122	if (hdr->Signature != ahdr->Signature ||
1123	    crc32(meta->hdr, ss) != val ||
1124	    memcmp(hdr->DDF_Header_GUID, ahdr->DDF_Header_GUID, 24) ||
1125	    GET64(meta, hdr->Primary_Header_LBA) != plba ||
1126	    GET64(meta, hdr->Secondary_Header_LBA) != slba) {
1127hdrerror:
1128		G_RAID_DEBUG(1, "DDF %s metadata check failed on %s",
1129		    (lba == plba) ? "primary" : "secondary", pp->name);
1130		if (lba == plba && slba != -1) {
1131			lba = slba;
1132			goto doread;
1133		}
1134		G_RAID_DEBUG(1, "DDF metadata check failed on %s", pp->name);
1135		error = EINVAL;
1136		goto done;
1137	}
1138	if ((lba == plba && hdr->Header_Type != DDF_HEADER_PRIMARY) ||
1139	    (lba == slba && hdr->Header_Type != DDF_HEADER_SECONDARY))
1140		goto hdrerror;
1141	len = 1;
1142	len = max(len, GET32(meta, hdr->cd_section) + GET32(meta, hdr->cd_length));
1143	len = max(len, GET32(meta, hdr->pdr_section) + GET32(meta, hdr->pdr_length));
1144	len = max(len, GET32(meta, hdr->vdr_section) + GET32(meta, hdr->vdr_length));
1145	len = max(len, GET32(meta, hdr->cr_section) + GET32(meta, hdr->cr_length));
1146	len = max(len, GET32(meta, hdr->pdd_section) + GET32(meta, hdr->pdd_length));
1147	if ((val = GET32(meta, hdr->bbmlog_section)) != 0xffffffff)
1148		len = max(len, val + GET32(meta, hdr->bbmlog_length));
1149	if ((val = GET32(meta, hdr->Diagnostic_Space)) != 0xffffffff)
1150		len = max(len, val + GET32(meta, hdr->Diagnostic_Space_Length));
1151	if ((val = GET32(meta, hdr->Vendor_Specific_Logs)) != 0xffffffff)
1152		len = max(len, val + GET32(meta, hdr->Vendor_Specific_Logs_Length));
1153	if ((plba + len) * ss >= pp->mediasize)
1154		goto hdrerror;
1155	if (slba != -1 && (slba + len) * ss >= pp->mediasize)
1156		goto hdrerror;
1157	/* Workaround for Adaptec implementation. */
1158	if (GET16(meta, hdr->Max_Primary_Element_Entries) == 0xffff) {
1159		SET16(meta, hdr->Max_Primary_Element_Entries,
1160		    min(GET16(meta, hdr->Max_PD_Entries),
1161		    (GET16(meta, hdr->Configuration_Record_Length) * ss - 512) / 12));
1162	}
1163
1164	/* Read controller data. */
1165	buf = g_read_data(cp, (lba + GET32(meta, hdr->cd_section)) * ss,
1166	    GET32(meta, hdr->cd_length) * ss, &error);
1167	if (buf == NULL)
1168		goto readerror;
1169	meta->cdr = malloc(GET32(meta, hdr->cd_length) * ss, M_MD_DDF, M_WAITOK);
1170	memcpy(meta->cdr, buf, GET32(meta, hdr->cd_length) * ss);
1171	g_free(buf);
1172	if (GET32(meta, cdr->Signature) != DDF_CONTROLLER_DATA_SIGNATURE)
1173		goto hdrerror;
1174
1175	/* Read physical disk records. */
1176	buf = g_read_data(cp, (lba + GET32(meta, hdr->pdr_section)) * ss,
1177	    GET32(meta, hdr->pdr_length) * ss, &error);
1178	if (buf == NULL)
1179		goto readerror;
1180	meta->pdr = malloc(GET32(meta, hdr->pdr_length) * ss, M_MD_DDF, M_WAITOK);
1181	memcpy(meta->pdr, buf, GET32(meta, hdr->pdr_length) * ss);
1182	g_free(buf);
1183	if (GET32(meta, pdr->Signature) != DDF_PDR_SIGNATURE)
1184		goto hdrerror;
1185	/*
1186	 * Workaround for reading metadata corrupted due to graid bug.
1187	 * XXX: Remove this before we have disks above 128PB. :)
1188	 */
1189	if (meta->bigendian) {
1190		for (i = 0; i < GET16(meta, pdr->Populated_PDEs); i++) {
1191			if (isff(meta->pdr->entry[i].PD_GUID, 24))
1192				continue;
1193			if (GET32(meta, pdr->entry[i].PD_Reference) ==
1194			    0xffffffff)
1195				continue;
1196			if (GET64(meta, pdr->entry[i].Configured_Size) >=
1197			     (1ULL << 48)) {
1198				SET16(meta, pdr->entry[i].PD_State,
1199				    GET16(meta, pdr->entry[i].PD_State) &
1200				    ~DDF_PDE_FAILED);
1201				SET64(meta, pdr->entry[i].Configured_Size,
1202				    GET64(meta, pdr->entry[i].Configured_Size) &
1203				    ((1ULL << 48) - 1));
1204			}
1205		}
1206	}
1207
1208	/* Read virtual disk records. */
1209	buf = g_read_data(cp, (lba + GET32(meta, hdr->vdr_section)) * ss,
1210	    GET32(meta, hdr->vdr_length) * ss, &error);
1211	if (buf == NULL)
1212		goto readerror;
1213	meta->vdr = malloc(GET32(meta, hdr->vdr_length) * ss, M_MD_DDF, M_WAITOK);
1214	memcpy(meta->vdr, buf, GET32(meta, hdr->vdr_length) * ss);
1215	g_free(buf);
1216	if (GET32(meta, vdr->Signature) != DDF_VD_RECORD_SIGNATURE)
1217		goto hdrerror;
1218
1219	/* Read configuration records. */
1220	buf = g_read_data(cp, (lba + GET32(meta, hdr->cr_section)) * ss,
1221	    GET32(meta, hdr->cr_length) * ss, &error);
1222	if (buf == NULL)
1223		goto readerror;
1224	meta->cr = malloc(GET32(meta, hdr->cr_length) * ss, M_MD_DDF, M_WAITOK);
1225	memcpy(meta->cr, buf, GET32(meta, hdr->cr_length) * ss);
1226	g_free(buf);
1227
1228	/* Read physical disk data. */
1229	buf = g_read_data(cp, (lba + GET32(meta, hdr->pdd_section)) * ss,
1230	    GET32(meta, hdr->pdd_length) * ss, &error);
1231	if (buf == NULL)
1232		goto readerror;
1233	meta->pdd = malloc(GET32(meta, hdr->pdd_length) * ss, M_MD_DDF, M_WAITOK);
1234	memcpy(meta->pdd, buf, GET32(meta, hdr->pdd_length) * ss);
1235	g_free(buf);
1236	if (GET32(meta, pdd->Signature) != DDF_PDD_SIGNATURE)
1237		goto hdrerror;
1238	i = ddf_meta_find_pd(meta, NULL, GET32(meta, pdd->PD_Reference));
1239	if (i < 0)
1240		goto hdrerror;
1241
1242	/* Read BBM Log. */
1243	if (GET32(meta, hdr->bbmlog_section) != 0xffffffff &&
1244	    GET32(meta, hdr->bbmlog_length) != 0) {
1245		buf = g_read_data(cp, (lba + GET32(meta, hdr->bbmlog_section)) * ss,
1246		    GET32(meta, hdr->bbmlog_length) * ss, &error);
1247		if (buf == NULL)
1248			goto readerror;
1249		meta->bbm = malloc(GET32(meta, hdr->bbmlog_length) * ss, M_MD_DDF, M_WAITOK);
1250		memcpy(meta->bbm, buf, GET32(meta, hdr->bbmlog_length) * ss);
1251		g_free(buf);
1252		if (GET32(meta, bbm->Signature) != DDF_BBML_SIGNATURE)
1253			goto hdrerror;
1254	}
1255
1256done:
1257	g_free(abuf);
1258	if (error != 0)
1259		ddf_meta_free(meta);
1260	return (error);
1261}
1262
1263static int
1264ddf_meta_write(struct g_consumer *cp, struct ddf_meta *meta)
1265{
1266	struct g_provider *pp;
1267	struct ddf_vdc_record *vdc;
1268	off_t alba, plba, slba, lba;
1269	u_int ss, size;
1270	int error, i, num;
1271
1272	pp = cp->provider;
1273	ss = pp->sectorsize;
1274	lba = alba = pp->mediasize / ss - 1;
1275	plba = GET64(meta, hdr->Primary_Header_LBA);
1276	slba = GET64(meta, hdr->Secondary_Header_LBA);
1277
1278next:
1279	SET8(meta, hdr->Header_Type, (lba == alba) ? DDF_HEADER_ANCHOR :
1280	    (lba == plba) ? DDF_HEADER_PRIMARY : DDF_HEADER_SECONDARY);
1281	SET32(meta, hdr->CRC, 0xffffffff);
1282	SET32(meta, hdr->CRC, crc32(meta->hdr, ss));
1283	error = g_write_data(cp, lba * ss, meta->hdr, ss);
1284	if (error != 0) {
1285err:
1286		G_RAID_DEBUG(1, "Cannot write metadata to %s (error=%d).",
1287		    pp->name, error);
1288		if (lba != alba)
1289			goto done;
1290	}
1291	if (lba == alba) {
1292		lba = plba;
1293		goto next;
1294	}
1295
1296	size = GET32(meta, hdr->cd_length) * ss;
1297	SET32(meta, cdr->CRC, 0xffffffff);
1298	SET32(meta, cdr->CRC, crc32(meta->cdr, size));
1299	error = g_write_data(cp, (lba + GET32(meta, hdr->cd_section)) * ss,
1300	    meta->cdr, size);
1301	if (error != 0)
1302		goto err;
1303
1304	size = GET32(meta, hdr->pdr_length) * ss;
1305	SET32(meta, pdr->CRC, 0xffffffff);
1306	SET32(meta, pdr->CRC, crc32(meta->pdr, size));
1307	error = g_write_data(cp, (lba + GET32(meta, hdr->pdr_section)) * ss,
1308	    meta->pdr, size);
1309	if (error != 0)
1310		goto err;
1311
1312	size = GET32(meta, hdr->vdr_length) * ss;
1313	SET32(meta, vdr->CRC, 0xffffffff);
1314	SET32(meta, vdr->CRC, crc32(meta->vdr, size));
1315	error = g_write_data(cp, (lba + GET32(meta, hdr->vdr_section)) * ss,
1316	    meta->vdr, size);
1317	if (error != 0)
1318		goto err;
1319
1320	size = GET16(meta, hdr->Configuration_Record_Length) * ss;
1321	num = GETCRNUM(meta);
1322	for (i = 0; i < num; i++) {
1323		vdc = GETVDCPTR(meta, i);
1324		SET32D(meta, vdc->CRC, 0xffffffff);
1325		SET32D(meta, vdc->CRC, crc32(vdc, size));
1326	}
1327	error = g_write_data(cp, (lba + GET32(meta, hdr->cr_section)) * ss,
1328	    meta->cr, size * num);
1329	if (error != 0)
1330		goto err;
1331
1332	size = GET32(meta, hdr->pdd_length) * ss;
1333	SET32(meta, pdd->CRC, 0xffffffff);
1334	SET32(meta, pdd->CRC, crc32(meta->pdd, size));
1335	error = g_write_data(cp, (lba + GET32(meta, hdr->pdd_section)) * ss,
1336	    meta->pdd, size);
1337	if (error != 0)
1338		goto err;
1339
1340	if (GET32(meta, hdr->bbmlog_length) != 0) {
1341		size = GET32(meta, hdr->bbmlog_length) * ss;
1342		SET32(meta, bbm->CRC, 0xffffffff);
1343		SET32(meta, bbm->CRC, crc32(meta->bbm, size));
1344		error = g_write_data(cp,
1345		    (lba + GET32(meta, hdr->bbmlog_section)) * ss,
1346		    meta->bbm, size);
1347		if (error != 0)
1348			goto err;
1349	}
1350
1351done:
1352	if (lba == plba && slba != -1) {
1353		lba = slba;
1354		goto next;
1355	}
1356
1357	return (error);
1358}
1359
1360static int
1361ddf_meta_erase(struct g_consumer *cp)
1362{
1363	struct g_provider *pp;
1364	char *buf;
1365	int error;
1366
1367	pp = cp->provider;
1368	buf = malloc(pp->sectorsize, M_MD_DDF, M_WAITOK | M_ZERO);
1369	error = g_write_data(cp, pp->mediasize - pp->sectorsize,
1370	    buf, pp->sectorsize);
1371	if (error != 0) {
1372		G_RAID_DEBUG(1, "Cannot erase metadata on %s (error=%d).",
1373		    pp->name, error);
1374	}
1375	free(buf, M_MD_DDF);
1376	return (error);
1377}
1378
1379static struct g_raid_volume *
1380g_raid_md_ddf_get_volume(struct g_raid_softc *sc, uint8_t *GUID)
1381{
1382	struct g_raid_volume	*vol;
1383	struct g_raid_md_ddf_pervolume *pv;
1384
1385	TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
1386		pv = vol->v_md_data;
1387		if (memcmp(pv->pv_meta.vde->VD_GUID, GUID, 24) == 0)
1388			break;
1389	}
1390	return (vol);
1391}
1392
1393static struct g_raid_disk *
1394g_raid_md_ddf_get_disk(struct g_raid_softc *sc, uint8_t *GUID, uint32_t id)
1395{
1396	struct g_raid_disk	*disk;
1397	struct g_raid_md_ddf_perdisk *pd;
1398	struct ddf_meta *meta;
1399
1400	TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1401		pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
1402		meta = &pd->pd_meta;
1403		if (GUID != NULL) {
1404			if (memcmp(meta->pdd->PD_GUID, GUID, 24) == 0)
1405				break;
1406		} else {
1407			if (GET32(meta, pdd->PD_Reference) == id)
1408				break;
1409		}
1410	}
1411	return (disk);
1412}
1413
1414static int
1415g_raid_md_ddf_purge_volumes(struct g_raid_softc *sc)
1416{
1417	struct g_raid_volume	*vol, *tvol;
1418	struct g_raid_md_ddf_pervolume *pv;
1419	int i, res;
1420
1421	res = 0;
1422	TAILQ_FOREACH_SAFE(vol, &sc->sc_volumes, v_next, tvol) {
1423		pv = vol->v_md_data;
1424		if (vol->v_stopping)
1425			continue;
1426		for (i = 0; i < vol->v_disks_count; i++) {
1427			if (vol->v_subdisks[i].sd_state != G_RAID_SUBDISK_S_NONE)
1428				break;
1429		}
1430		if (i >= vol->v_disks_count) {
1431			g_raid_destroy_volume(vol);
1432			res = 1;
1433		}
1434	}
1435	return (res);
1436}
1437
1438static int
1439g_raid_md_ddf_purge_disks(struct g_raid_softc *sc)
1440{
1441#if 0
1442	struct g_raid_disk	*disk, *tdisk;
1443	struct g_raid_volume	*vol;
1444	struct g_raid_md_ddf_perdisk *pd;
1445	int i, j, res;
1446
1447	res = 0;
1448	TAILQ_FOREACH_SAFE(disk, &sc->sc_disks, d_next, tdisk) {
1449		if (disk->d_state == G_RAID_DISK_S_SPARE)
1450			continue;
1451		pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
1452
1453		/* Scan for deleted volumes. */
1454		for (i = 0; i < pd->pd_subdisks; ) {
1455			vol = g_raid_md_ddf_get_volume(sc,
1456			    pd->pd_meta[i]->volume_id);
1457			if (vol != NULL && !vol->v_stopping) {
1458				i++;
1459				continue;
1460			}
1461			free(pd->pd_meta[i], M_MD_DDF);
1462			for (j = i; j < pd->pd_subdisks - 1; j++)
1463				pd->pd_meta[j] = pd->pd_meta[j + 1];
1464			pd->pd_meta[DDF_MAX_SUBDISKS - 1] = NULL;
1465			pd->pd_subdisks--;
1466			pd->pd_updated = 1;
1467		}
1468
1469		/* If there is no metadata left - erase and delete disk. */
1470		if (pd->pd_subdisks == 0) {
1471			ddf_meta_erase(disk->d_consumer);
1472			g_raid_destroy_disk(disk);
1473			res = 1;
1474		}
1475	}
1476	return (res);
1477#endif
1478	return (0);
1479}
1480
1481static int
1482g_raid_md_ddf_supported(int level, int qual, int disks, int force)
1483{
1484
1485	if (disks > DDF_MAX_DISKS_HARD)
1486		return (0);
1487	switch (level) {
1488	case G_RAID_VOLUME_RL_RAID0:
1489		if (qual != G_RAID_VOLUME_RLQ_NONE)
1490			return (0);
1491		if (disks < 1)
1492			return (0);
1493		if (!force && disks < 2)
1494			return (0);
1495		break;
1496	case G_RAID_VOLUME_RL_RAID1:
1497		if (disks < 1)
1498			return (0);
1499		if (qual == G_RAID_VOLUME_RLQ_R1SM) {
1500			if (!force && disks != 2)
1501				return (0);
1502		} else if (qual == G_RAID_VOLUME_RLQ_R1MM) {
1503			if (!force && disks != 3)
1504				return (0);
1505		} else
1506			return (0);
1507		break;
1508	case G_RAID_VOLUME_RL_RAID3:
1509		if (qual != G_RAID_VOLUME_RLQ_R3P0 &&
1510		    qual != G_RAID_VOLUME_RLQ_R3PN)
1511			return (0);
1512		if (disks < 3)
1513			return (0);
1514		break;
1515	case G_RAID_VOLUME_RL_RAID4:
1516		if (qual != G_RAID_VOLUME_RLQ_R4P0 &&
1517		    qual != G_RAID_VOLUME_RLQ_R4PN)
1518			return (0);
1519		if (disks < 3)
1520			return (0);
1521		break;
1522	case G_RAID_VOLUME_RL_RAID5:
1523		if (qual != G_RAID_VOLUME_RLQ_R5RA &&
1524		    qual != G_RAID_VOLUME_RLQ_R5RS &&
1525		    qual != G_RAID_VOLUME_RLQ_R5LA &&
1526		    qual != G_RAID_VOLUME_RLQ_R5LS)
1527			return (0);
1528		if (disks < 3)
1529			return (0);
1530		break;
1531	case G_RAID_VOLUME_RL_RAID6:
1532		if (qual != G_RAID_VOLUME_RLQ_R6RA &&
1533		    qual != G_RAID_VOLUME_RLQ_R6RS &&
1534		    qual != G_RAID_VOLUME_RLQ_R6LA &&
1535		    qual != G_RAID_VOLUME_RLQ_R6LS)
1536			return (0);
1537		if (disks < 4)
1538			return (0);
1539		break;
1540	case G_RAID_VOLUME_RL_RAIDMDF:
1541		if (qual != G_RAID_VOLUME_RLQ_RMDFRA &&
1542		    qual != G_RAID_VOLUME_RLQ_RMDFRS &&
1543		    qual != G_RAID_VOLUME_RLQ_RMDFLA &&
1544		    qual != G_RAID_VOLUME_RLQ_RMDFLS)
1545			return (0);
1546		if (disks < 4)
1547			return (0);
1548		break;
1549	case G_RAID_VOLUME_RL_RAID1E:
1550		if (qual != G_RAID_VOLUME_RLQ_R1EA &&
1551		    qual != G_RAID_VOLUME_RLQ_R1EO)
1552			return (0);
1553		if (disks < 3)
1554			return (0);
1555		break;
1556	case G_RAID_VOLUME_RL_SINGLE:
1557		if (qual != G_RAID_VOLUME_RLQ_NONE)
1558			return (0);
1559		if (disks != 1)
1560			return (0);
1561		break;
1562	case G_RAID_VOLUME_RL_CONCAT:
1563		if (qual != G_RAID_VOLUME_RLQ_NONE)
1564			return (0);
1565		if (disks < 2)
1566			return (0);
1567		break;
1568	case G_RAID_VOLUME_RL_RAID5E:
1569		if (qual != G_RAID_VOLUME_RLQ_R5ERA &&
1570		    qual != G_RAID_VOLUME_RLQ_R5ERS &&
1571		    qual != G_RAID_VOLUME_RLQ_R5ELA &&
1572		    qual != G_RAID_VOLUME_RLQ_R5ELS)
1573			return (0);
1574		if (disks < 4)
1575			return (0);
1576		break;
1577	case G_RAID_VOLUME_RL_RAID5EE:
1578		if (qual != G_RAID_VOLUME_RLQ_R5EERA &&
1579		    qual != G_RAID_VOLUME_RLQ_R5EERS &&
1580		    qual != G_RAID_VOLUME_RLQ_R5EELA &&
1581		    qual != G_RAID_VOLUME_RLQ_R5EELS)
1582			return (0);
1583		if (disks < 4)
1584			return (0);
1585		break;
1586	case G_RAID_VOLUME_RL_RAID5R:
1587		if (qual != G_RAID_VOLUME_RLQ_R5RRA &&
1588		    qual != G_RAID_VOLUME_RLQ_R5RRS &&
1589		    qual != G_RAID_VOLUME_RLQ_R5RLA &&
1590		    qual != G_RAID_VOLUME_RLQ_R5RLS)
1591			return (0);
1592		if (disks < 3)
1593			return (0);
1594		break;
1595	default:
1596		return (0);
1597	}
1598	return (1);
1599}
1600
1601static int
1602g_raid_md_ddf_start_disk(struct g_raid_disk *disk, struct g_raid_volume *vol)
1603{
1604	struct g_raid_softc *sc;
1605	struct g_raid_subdisk *sd;
1606	struct g_raid_md_ddf_perdisk *pd;
1607	struct g_raid_md_ddf_pervolume *pv;
1608	struct g_raid_md_ddf_object *mdi;
1609	struct ddf_vol_meta *vmeta;
1610	struct ddf_meta *pdmeta, *gmeta;
1611	struct ddf_vdc_record *vdc1;
1612	struct ddf_sa_record *sa;
1613	off_t size, eoff = 0, esize = 0;
1614	uint64_t *val2;
1615	int disk_pos, md_disk_bvd = -1, md_disk_pos = -1, md_pde_pos;
1616	int i, resurrection = 0;
1617	uint32_t reference;
1618
1619	sc = disk->d_softc;
1620	mdi = (struct g_raid_md_ddf_object *)sc->sc_md;
1621	pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
1622	pdmeta = &pd->pd_meta;
1623	reference = GET32(&pd->pd_meta, pdd->PD_Reference);
1624
1625	pv = vol->v_md_data;
1626	vmeta = &pv->pv_meta;
1627	gmeta = &mdi->mdio_meta;
1628
1629	/* Find disk position in metadata by it's reference. */
1630	disk_pos = ddf_meta_find_disk(vmeta, reference,
1631	    &md_disk_bvd, &md_disk_pos);
1632	md_pde_pos = ddf_meta_find_pd(gmeta, NULL, reference);
1633
1634	if (disk_pos < 0) {
1635		G_RAID_DEBUG1(1, sc,
1636		    "Disk %s is not a present part of the volume %s",
1637		    g_raid_get_diskname(disk), vol->v_name);
1638
1639		/* Failed stale disk is useless for us. */
1640		if ((GET16(gmeta, pdr->entry[md_pde_pos].PD_State) & DDF_PDE_PFA) != 0) {
1641			g_raid_change_disk_state(disk, G_RAID_DISK_S_STALE_FAILED);
1642			return (0);
1643		}
1644
1645		/* If disk has some metadata for this volume - erase. */
1646		if ((vdc1 = ddf_meta_find_vdc(pdmeta, vmeta->vdc->VD_GUID)) != NULL)
1647			SET32D(pdmeta, vdc1->Signature, 0xffffffff);
1648
1649		/* If we are in the start process, that's all for now. */
1650		if (!pv->pv_started)
1651			goto nofit;
1652		/*
1653		 * If we have already started - try to get use of the disk.
1654		 * Try to replace OFFLINE disks first, then FAILED.
1655		 */
1656		if (ddf_meta_count_vdc(&pd->pd_meta, NULL) >=
1657			GET16(&pd->pd_meta, hdr->Max_Partitions)) {
1658			G_RAID_DEBUG1(1, sc, "No free partitions on disk %s",
1659			    g_raid_get_diskname(disk));
1660			goto nofit;
1661		}
1662		ddf_meta_unused_range(&pd->pd_meta, &eoff, &esize);
1663		if (esize == 0) {
1664			G_RAID_DEBUG1(1, sc, "No free space on disk %s",
1665			    g_raid_get_diskname(disk));
1666			goto nofit;
1667		}
1668		eoff *= pd->pd_meta.sectorsize;
1669		esize *= pd->pd_meta.sectorsize;
1670		size = INT64_MAX;
1671		for (i = 0; i < vol->v_disks_count; i++) {
1672			sd = &vol->v_subdisks[i];
1673			if (sd->sd_state != G_RAID_SUBDISK_S_NONE)
1674				size = sd->sd_size;
1675			if (sd->sd_state <= G_RAID_SUBDISK_S_FAILED &&
1676			    (disk_pos < 0 ||
1677			     vol->v_subdisks[i].sd_state < sd->sd_state))
1678				disk_pos = i;
1679		}
1680		if (disk_pos >= 0 &&
1681		    vol->v_raid_level != G_RAID_VOLUME_RL_CONCAT &&
1682		    esize < size) {
1683			G_RAID_DEBUG1(1, sc, "Disk %s free space "
1684			    "is too small (%ju < %ju)",
1685			    g_raid_get_diskname(disk), esize, size);
1686			disk_pos = -1;
1687		}
1688		if (disk_pos >= 0) {
1689			if (vol->v_raid_level != G_RAID_VOLUME_RL_CONCAT)
1690				esize = size;
1691			md_disk_bvd = disk_pos / GET16(vmeta, vdc->Primary_Element_Count); // XXX
1692			md_disk_pos = disk_pos % GET16(vmeta, vdc->Primary_Element_Count); // XXX
1693		} else {
1694nofit:
1695			if (disk->d_state == G_RAID_DISK_S_NONE)
1696				g_raid_change_disk_state(disk,
1697				    G_RAID_DISK_S_STALE);
1698			return (0);
1699		}
1700
1701		/*
1702		 * If spare is committable, delete spare record.
1703		 * Othersize, mark it active and leave there.
1704		 */
1705		sa = ddf_meta_find_sa(&pd->pd_meta, 0);
1706		if (sa != NULL) {
1707			if ((GET8D(&pd->pd_meta, sa->Spare_Type) &
1708			    DDF_SAR_TYPE_REVERTIBLE) == 0) {
1709				SET32D(&pd->pd_meta, sa->Signature, 0xffffffff);
1710			} else {
1711				SET8D(&pd->pd_meta, sa->Spare_Type,
1712				    GET8D(&pd->pd_meta, sa->Spare_Type) |
1713				    DDF_SAR_TYPE_ACTIVE);
1714			}
1715		}
1716
1717		G_RAID_DEBUG1(1, sc, "Disk %s takes pos %d in the volume %s",
1718		    g_raid_get_diskname(disk), disk_pos, vol->v_name);
1719		resurrection = 1;
1720	}
1721
1722	sd = &vol->v_subdisks[disk_pos];
1723
1724	if (resurrection && sd->sd_disk != NULL) {
1725		g_raid_change_disk_state(sd->sd_disk,
1726		    G_RAID_DISK_S_STALE_FAILED);
1727		TAILQ_REMOVE(&sd->sd_disk->d_subdisks,
1728		    sd, sd_next);
1729	}
1730	vol->v_subdisks[disk_pos].sd_disk = disk;
1731	TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
1732
1733	/* Welcome the new disk. */
1734	if (resurrection)
1735		g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
1736	else if (GET16(gmeta, pdr->entry[md_pde_pos].PD_State) & DDF_PDE_PFA)
1737		g_raid_change_disk_state(disk, G_RAID_DISK_S_FAILED);
1738	else
1739		g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
1740
1741	if (resurrection) {
1742		sd->sd_offset = eoff;
1743		sd->sd_size = esize;
1744	} else if (pdmeta->cr != NULL &&
1745	    (vdc1 = ddf_meta_find_vdc(pdmeta, vmeta->vdc->VD_GUID)) != NULL) {
1746		val2 = (uint64_t *)&(vdc1->Physical_Disk_Sequence[GET16(vmeta, hdr->Max_Primary_Element_Entries)]);
1747		sd->sd_offset = (off_t)GET64P(pdmeta, val2 + md_disk_pos) * 512;
1748		sd->sd_size = (off_t)GET64D(pdmeta, vdc1->Block_Count) * 512;
1749	}
1750
1751	if (resurrection) {
1752		/* Stale disk, almost same as new. */
1753		g_raid_change_subdisk_state(sd,
1754		    G_RAID_SUBDISK_S_NEW);
1755	} else if (GET16(gmeta, pdr->entry[md_pde_pos].PD_State) & DDF_PDE_PFA) {
1756		/* Failed disk. */
1757		g_raid_change_subdisk_state(sd,
1758		    G_RAID_SUBDISK_S_FAILED);
1759	} else if ((GET16(gmeta, pdr->entry[md_pde_pos].PD_State) &
1760	     (DDF_PDE_FAILED | DDF_PDE_REBUILD)) != 0) {
1761		/* Rebuilding disk. */
1762		g_raid_change_subdisk_state(sd,
1763		    G_RAID_SUBDISK_S_REBUILD);
1764		sd->sd_rebuild_pos = 0;
1765	} else if ((GET8(vmeta, vde->VD_State) & DDF_VDE_DIRTY) != 0 ||
1766	    (GET8(vmeta, vde->Init_State) & DDF_VDE_INIT_MASK) !=
1767	     DDF_VDE_INIT_FULL) {
1768		/* Stale disk or dirty volume (unclean shutdown). */
1769		g_raid_change_subdisk_state(sd,
1770		    G_RAID_SUBDISK_S_STALE);
1771	} else {
1772		/* Up to date disk. */
1773		g_raid_change_subdisk_state(sd,
1774		    G_RAID_SUBDISK_S_ACTIVE);
1775	}
1776	g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
1777	    G_RAID_EVENT_SUBDISK);
1778
1779	return (resurrection);
1780}
1781
1782static void
1783g_raid_md_ddf_refill(struct g_raid_softc *sc)
1784{
1785	struct g_raid_volume *vol;
1786	struct g_raid_subdisk *sd;
1787	struct g_raid_disk *disk;
1788	struct g_raid_md_object *md;
1789	struct g_raid_md_ddf_perdisk *pd;
1790	struct g_raid_md_ddf_pervolume *pv;
1791	int update, updated, i, bad;
1792
1793	md = sc->sc_md;
1794restart:
1795	updated = 0;
1796	TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
1797		pv = vol->v_md_data;
1798		if (!pv->pv_started || vol->v_stopping)
1799			continue;
1800
1801		/* Search for subdisk that needs replacement. */
1802		bad = 0;
1803		for (i = 0; i < vol->v_disks_count; i++) {
1804			sd = &vol->v_subdisks[i];
1805			if (sd->sd_state == G_RAID_SUBDISK_S_NONE ||
1806			    sd->sd_state == G_RAID_SUBDISK_S_FAILED)
1807			        bad = 1;
1808		}
1809		if (!bad)
1810			continue;
1811
1812		G_RAID_DEBUG1(1, sc, "Volume %s is not complete, "
1813		    "trying to refill.", vol->v_name);
1814
1815		TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1816			/* Skip failed. */
1817			if (disk->d_state < G_RAID_DISK_S_SPARE)
1818				continue;
1819			/* Skip already used by this volume. */
1820			for (i = 0; i < vol->v_disks_count; i++) {
1821				sd = &vol->v_subdisks[i];
1822				if (sd->sd_disk == disk)
1823					break;
1824			}
1825			if (i < vol->v_disks_count)
1826				continue;
1827
1828			/* Try to use disk if it has empty extents. */
1829			pd = disk->d_md_data;
1830			if (ddf_meta_count_vdc(&pd->pd_meta, NULL) <
1831			    GET16(&pd->pd_meta, hdr->Max_Partitions)) {
1832				update = g_raid_md_ddf_start_disk(disk, vol);
1833			} else
1834				update = 0;
1835			if (update) {
1836				updated = 1;
1837				g_raid_md_write_ddf(md, vol, NULL, disk);
1838				break;
1839			}
1840		}
1841	}
1842	if (updated)
1843		goto restart;
1844}
1845
1846static void
1847g_raid_md_ddf_start(struct g_raid_volume *vol)
1848{
1849	struct g_raid_softc *sc;
1850	struct g_raid_subdisk *sd;
1851	struct g_raid_disk *disk;
1852	struct g_raid_md_object *md;
1853	struct g_raid_md_ddf_perdisk *pd;
1854	struct g_raid_md_ddf_pervolume *pv;
1855	struct g_raid_md_ddf_object *mdi;
1856	struct ddf_vol_meta *vmeta;
1857	struct ddf_vdc_record *vdc;
1858	uint64_t *val2;
1859	int i, j, bvd;
1860
1861	sc = vol->v_softc;
1862	md = sc->sc_md;
1863	mdi = (struct g_raid_md_ddf_object *)md;
1864	pv = vol->v_md_data;
1865	vmeta = &pv->pv_meta;
1866	vdc = vmeta->vdc;
1867
1868	vol->v_raid_level = GET8(vmeta, vdc->Primary_RAID_Level);
1869	vol->v_raid_level_qualifier = GET8(vmeta, vdc->RLQ);
1870	if (GET8(vmeta, vdc->Secondary_Element_Count) > 1 &&
1871	    vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 &&
1872	    GET8(vmeta, vdc->Secondary_RAID_Level) == 0)
1873		vol->v_raid_level = G_RAID_VOLUME_RL_RAID1E;
1874	vol->v_sectorsize = GET16(vmeta, vdc->Block_Size);
1875	if (vol->v_sectorsize == 0xffff)
1876		vol->v_sectorsize = vmeta->sectorsize;
1877	vol->v_strip_size = vol->v_sectorsize << GET8(vmeta, vdc->Stripe_Size);
1878	vol->v_disks_count = GET16(vmeta, vdc->Primary_Element_Count) *
1879	    GET8(vmeta, vdc->Secondary_Element_Count);
1880	vol->v_mdf_pdisks = GET8(vmeta, vdc->MDF_Parity_Disks);
1881	vol->v_mdf_polynomial = GET16(vmeta, vdc->MDF_Parity_Generator_Polynomial);
1882	vol->v_mdf_method = GET8(vmeta, vdc->MDF_Constant_Generation_Method);
1883	if (GET8(vmeta, vdc->Rotate_Parity_count) > 31)
1884		vol->v_rotate_parity = 1;
1885	else
1886		vol->v_rotate_parity = 1 << GET8(vmeta, vdc->Rotate_Parity_count);
1887	vol->v_mediasize = GET64(vmeta, vdc->VD_Size) * vol->v_sectorsize;
1888	for (i = 0, j = 0, bvd = 0; i < vol->v_disks_count; i++, j++) {
1889		if (j == GET16(vmeta, vdc->Primary_Element_Count)) {
1890			j = 0;
1891			bvd++;
1892		}
1893		sd = &vol->v_subdisks[i];
1894		if (vmeta->bvdc[bvd] == NULL) {
1895			sd->sd_offset = 0;
1896			sd->sd_size = GET64(vmeta, vdc->Block_Count) *
1897			    vol->v_sectorsize;
1898			continue;
1899		}
1900		val2 = (uint64_t *)&(vmeta->bvdc[bvd]->Physical_Disk_Sequence[
1901		    GET16(vmeta, hdr->Max_Primary_Element_Entries)]);
1902		sd->sd_offset = GET64P(vmeta, val2 + j) * vol->v_sectorsize;
1903		sd->sd_size = GET64(vmeta, bvdc[bvd]->Block_Count) *
1904		    vol->v_sectorsize;
1905	}
1906	g_raid_start_volume(vol);
1907
1908	/* Make all disks found till the moment take their places. */
1909	TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1910		pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
1911		if (ddf_meta_find_vdc(&pd->pd_meta, vmeta->vdc->VD_GUID) != NULL)
1912			g_raid_md_ddf_start_disk(disk, vol);
1913	}
1914
1915	pv->pv_started = 1;
1916	mdi->mdio_starting--;
1917	callout_stop(&pv->pv_start_co);
1918	G_RAID_DEBUG1(0, sc, "Volume started.");
1919	g_raid_md_write_ddf(md, vol, NULL, NULL);
1920
1921	/* Pickup any STALE/SPARE disks to refill array if needed. */
1922	g_raid_md_ddf_refill(sc);
1923
1924	g_raid_event_send(vol, G_RAID_VOLUME_E_START, G_RAID_EVENT_VOLUME);
1925}
1926
1927static void
1928g_raid_ddf_go(void *arg)
1929{
1930	struct g_raid_volume *vol;
1931	struct g_raid_softc *sc;
1932	struct g_raid_md_ddf_pervolume *pv;
1933
1934	vol = arg;
1935	pv = vol->v_md_data;
1936	sc = vol->v_softc;
1937	if (!pv->pv_started) {
1938		G_RAID_DEBUG1(0, sc, "Force volume start due to timeout.");
1939		g_raid_event_send(vol, G_RAID_VOLUME_E_STARTMD,
1940		    G_RAID_EVENT_VOLUME);
1941	}
1942}
1943
1944static void
1945g_raid_md_ddf_new_disk(struct g_raid_disk *disk)
1946{
1947	struct g_raid_softc *sc;
1948	struct g_raid_md_object *md;
1949	struct g_raid_md_ddf_perdisk *pd;
1950	struct g_raid_md_ddf_pervolume *pv;
1951	struct g_raid_md_ddf_object *mdi;
1952	struct g_raid_volume *vol;
1953	struct ddf_meta *pdmeta;
1954	struct ddf_vol_meta *vmeta;
1955	struct ddf_vdc_record *vdc;
1956	struct ddf_vd_entry *vde;
1957	int i, j, k, num, have, need, cnt, spare;
1958	uint32_t val;
1959	char buf[17];
1960
1961	sc = disk->d_softc;
1962	md = sc->sc_md;
1963	mdi = (struct g_raid_md_ddf_object *)md;
1964	pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
1965	pdmeta = &pd->pd_meta;
1966	spare = -1;
1967
1968	if (mdi->mdio_meta.hdr == NULL)
1969		ddf_meta_copy(&mdi->mdio_meta, pdmeta);
1970	else
1971		ddf_meta_update(&mdi->mdio_meta, pdmeta);
1972
1973	num = GETCRNUM(pdmeta);
1974	for (j = 0; j < num; j++) {
1975		vdc = GETVDCPTR(pdmeta, j);
1976		val = GET32D(pdmeta, vdc->Signature);
1977
1978		if (val == DDF_SA_SIGNATURE && spare == -1)
1979			spare = 1;
1980
1981		if (val != DDF_VDCR_SIGNATURE)
1982			continue;
1983		spare = 0;
1984		k = ddf_meta_find_vd(pdmeta, vdc->VD_GUID);
1985		if (k < 0)
1986			continue;
1987		vde = &pdmeta->vdr->entry[k];
1988
1989		/* Look for volume with matching ID. */
1990		vol = g_raid_md_ddf_get_volume(sc, vdc->VD_GUID);
1991		if (vol == NULL) {
1992			ddf_meta_get_name(pdmeta, k, buf);
1993			vol = g_raid_create_volume(sc, buf,
1994			    GET16D(pdmeta, vde->VD_Number));
1995			pv = malloc(sizeof(*pv), M_MD_DDF, M_WAITOK | M_ZERO);
1996			vol->v_md_data = pv;
1997			callout_init(&pv->pv_start_co, 1);
1998			callout_reset(&pv->pv_start_co,
1999			    g_raid_start_timeout * hz,
2000			    g_raid_ddf_go, vol);
2001			mdi->mdio_starting++;
2002		} else
2003			pv = vol->v_md_data;
2004
2005		/* If we haven't started yet - check metadata freshness. */
2006		vmeta = &pv->pv_meta;
2007		ddf_vol_meta_update(vmeta, pdmeta, vdc->VD_GUID, pv->pv_started);
2008	}
2009
2010	if (spare == 1) {
2011		g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE);
2012		g_raid_md_ddf_refill(sc);
2013	}
2014
2015	TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
2016		pv = vol->v_md_data;
2017		vmeta = &pv->pv_meta;
2018
2019		if (ddf_meta_find_vdc(pdmeta, vmeta->vdc->VD_GUID) == NULL)
2020			continue;
2021
2022		if (pv->pv_started) {
2023			if (g_raid_md_ddf_start_disk(disk, vol))
2024				g_raid_md_write_ddf(md, vol, NULL, NULL);
2025			continue;
2026		}
2027
2028		/* If we collected all needed disks - start array. */
2029		need = 0;
2030		have = 0;
2031		for (k = 0; k < GET8(vmeta, vdc->Secondary_Element_Count); k++) {
2032			if (vmeta->bvdc[k] == NULL) {
2033				need += GET16(vmeta, vdc->Primary_Element_Count);
2034				continue;
2035			}
2036			cnt = GET16(vmeta, bvdc[k]->Primary_Element_Count);
2037			need += cnt;
2038			for (i = 0; i < cnt; i++) {
2039				val = GET32(vmeta, bvdc[k]->Physical_Disk_Sequence[i]);
2040				if (g_raid_md_ddf_get_disk(sc, NULL, val) != NULL)
2041					have++;
2042			}
2043		}
2044		G_RAID_DEBUG1(1, sc, "Volume %s now has %d of %d disks",
2045		    vol->v_name, have, need);
2046		if (have == need)
2047			g_raid_md_ddf_start(vol);
2048	}
2049}
2050
2051static int
2052g_raid_md_create_req_ddf(struct g_raid_md_object *md, struct g_class *mp,
2053    struct gctl_req *req, struct g_geom **gp)
2054{
2055	struct g_geom *geom;
2056	struct g_raid_softc *sc;
2057	struct g_raid_md_ddf_object *mdi, *mdi1;
2058	char name[16];
2059	const char *fmtopt;
2060	int be = 1;
2061
2062	mdi = (struct g_raid_md_ddf_object *)md;
2063	fmtopt = gctl_get_asciiparam(req, "fmtopt");
2064	if (fmtopt == NULL || strcasecmp(fmtopt, "BE") == 0)
2065		be = 1;
2066	else if (strcasecmp(fmtopt, "LE") == 0)
2067		be = 0;
2068	else {
2069		gctl_error(req, "Incorrect fmtopt argument.");
2070		return (G_RAID_MD_TASTE_FAIL);
2071	}
2072
2073	/* Search for existing node. */
2074	LIST_FOREACH(geom, &mp->geom, geom) {
2075		sc = geom->softc;
2076		if (sc == NULL)
2077			continue;
2078		if (sc->sc_stopping != 0)
2079			continue;
2080		if (sc->sc_md->mdo_class != md->mdo_class)
2081			continue;
2082		mdi1 = (struct g_raid_md_ddf_object *)sc->sc_md;
2083		if (mdi1->mdio_bigendian != be)
2084			continue;
2085		break;
2086	}
2087	if (geom != NULL) {
2088		*gp = geom;
2089		return (G_RAID_MD_TASTE_EXISTING);
2090	}
2091
2092	/* Create new one if not found. */
2093	mdi->mdio_bigendian = be;
2094	snprintf(name, sizeof(name), "DDF%s", be ? "" : "-LE");
2095	sc = g_raid_create_node(mp, name, md);
2096	if (sc == NULL)
2097		return (G_RAID_MD_TASTE_FAIL);
2098	md->mdo_softc = sc;
2099	*gp = sc->sc_geom;
2100	return (G_RAID_MD_TASTE_NEW);
2101}
2102
2103static int
2104g_raid_md_taste_ddf(struct g_raid_md_object *md, struct g_class *mp,
2105                              struct g_consumer *cp, struct g_geom **gp)
2106{
2107	struct g_consumer *rcp;
2108	struct g_provider *pp;
2109	struct g_raid_softc *sc;
2110	struct g_raid_disk *disk;
2111	struct ddf_meta meta;
2112	struct g_raid_md_ddf_perdisk *pd;
2113	struct g_raid_md_ddf_object *mdi;
2114	struct g_geom *geom;
2115	int error, result, be;
2116	char name[16];
2117
2118	G_RAID_DEBUG(1, "Tasting DDF on %s", cp->provider->name);
2119	mdi = (struct g_raid_md_ddf_object *)md;
2120	pp = cp->provider;
2121
2122	/* Read metadata from device. */
2123	if (g_access(cp, 1, 0, 0) != 0)
2124		return (G_RAID_MD_TASTE_FAIL);
2125	g_topology_unlock();
2126	bzero(&meta, sizeof(meta));
2127	error = ddf_meta_read(cp, &meta);
2128	g_topology_lock();
2129	g_access(cp, -1, 0, 0);
2130	if (error != 0)
2131		return (G_RAID_MD_TASTE_FAIL);
2132	be = meta.bigendian;
2133
2134	/* Metadata valid. Print it. */
2135	g_raid_md_ddf_print(&meta);
2136
2137	/* Search for matching node. */
2138	sc = NULL;
2139	LIST_FOREACH(geom, &mp->geom, geom) {
2140		sc = geom->softc;
2141		if (sc == NULL)
2142			continue;
2143		if (sc->sc_stopping != 0)
2144			continue;
2145		if (sc->sc_md->mdo_class != md->mdo_class)
2146			continue;
2147		mdi = (struct g_raid_md_ddf_object *)sc->sc_md;
2148		if (mdi->mdio_bigendian != be)
2149			continue;
2150		break;
2151	}
2152
2153	/* Found matching node. */
2154	if (geom != NULL) {
2155		G_RAID_DEBUG(1, "Found matching array %s", sc->sc_name);
2156		result = G_RAID_MD_TASTE_EXISTING;
2157
2158	} else { /* Not found matching node -- create one. */
2159		result = G_RAID_MD_TASTE_NEW;
2160		mdi->mdio_bigendian = be;
2161		snprintf(name, sizeof(name), "DDF%s", be ? "" : "-LE");
2162		sc = g_raid_create_node(mp, name, md);
2163		md->mdo_softc = sc;
2164		geom = sc->sc_geom;
2165	}
2166
2167	rcp = g_new_consumer(geom);
2168	rcp->flags |= G_CF_DIRECT_RECEIVE;
2169	g_attach(rcp, pp);
2170	if (g_access(rcp, 1, 1, 1) != 0)
2171		; //goto fail1;
2172
2173	g_topology_unlock();
2174	sx_xlock(&sc->sc_lock);
2175
2176	pd = malloc(sizeof(*pd), M_MD_DDF, M_WAITOK | M_ZERO);
2177	pd->pd_meta = meta;
2178	disk = g_raid_create_disk(sc);
2179	disk->d_md_data = (void *)pd;
2180	disk->d_consumer = rcp;
2181	rcp->private = disk;
2182
2183	g_raid_get_disk_info(disk);
2184
2185	g_raid_md_ddf_new_disk(disk);
2186
2187	sx_xunlock(&sc->sc_lock);
2188	g_topology_lock();
2189	*gp = geom;
2190	return (result);
2191}
2192
2193static int
2194g_raid_md_event_ddf(struct g_raid_md_object *md,
2195    struct g_raid_disk *disk, u_int event)
2196{
2197	struct g_raid_softc *sc;
2198
2199	sc = md->mdo_softc;
2200	if (disk == NULL)
2201		return (-1);
2202	switch (event) {
2203	case G_RAID_DISK_E_DISCONNECTED:
2204		/* Delete disk. */
2205		g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE);
2206		g_raid_destroy_disk(disk);
2207		g_raid_md_ddf_purge_volumes(sc);
2208
2209		/* Write updated metadata to all disks. */
2210		g_raid_md_write_ddf(md, NULL, NULL, NULL);
2211
2212		/* Check if anything left. */
2213		if (g_raid_ndisks(sc, -1) == 0)
2214			g_raid_destroy_node(sc, 0);
2215		else
2216			g_raid_md_ddf_refill(sc);
2217		return (0);
2218	}
2219	return (-2);
2220}
2221
2222static int
2223g_raid_md_volume_event_ddf(struct g_raid_md_object *md,
2224    struct g_raid_volume *vol, u_int event)
2225{
2226	struct g_raid_md_ddf_pervolume *pv;
2227
2228	pv = (struct g_raid_md_ddf_pervolume *)vol->v_md_data;
2229	switch (event) {
2230	case G_RAID_VOLUME_E_STARTMD:
2231		if (!pv->pv_started)
2232			g_raid_md_ddf_start(vol);
2233		return (0);
2234	}
2235	return (-2);
2236}
2237
2238static int
2239g_raid_md_ctl_ddf(struct g_raid_md_object *md,
2240    struct gctl_req *req)
2241{
2242	struct g_raid_softc *sc;
2243	struct g_raid_volume *vol, *vol1;
2244	struct g_raid_subdisk *sd;
2245	struct g_raid_disk *disk, *disks[DDF_MAX_DISKS_HARD];
2246	struct g_raid_md_ddf_perdisk *pd;
2247	struct g_raid_md_ddf_pervolume *pv;
2248	struct g_raid_md_ddf_object *mdi;
2249	struct ddf_sa_record *sa;
2250	struct g_consumer *cp;
2251	struct g_provider *pp;
2252	char arg[16];
2253	const char *nodename, *verb, *volname, *levelname, *diskname;
2254	char *tmp;
2255	int *nargs, *force;
2256	off_t size, sectorsize, strip, offs[DDF_MAX_DISKS_HARD], esize;
2257	intmax_t *sizearg, *striparg;
2258	int i, numdisks, len, level, qual;
2259	int error;
2260
2261	sc = md->mdo_softc;
2262	mdi = (struct g_raid_md_ddf_object *)md;
2263	verb = gctl_get_param(req, "verb", NULL);
2264	nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
2265	error = 0;
2266
2267	if (strcmp(verb, "label") == 0) {
2268
2269		if (*nargs < 4) {
2270			gctl_error(req, "Invalid number of arguments.");
2271			return (-1);
2272		}
2273		volname = gctl_get_asciiparam(req, "arg1");
2274		if (volname == NULL) {
2275			gctl_error(req, "No volume name.");
2276			return (-2);
2277		}
2278		levelname = gctl_get_asciiparam(req, "arg2");
2279		if (levelname == NULL) {
2280			gctl_error(req, "No RAID level.");
2281			return (-3);
2282		}
2283		if (g_raid_volume_str2level(levelname, &level, &qual)) {
2284			gctl_error(req, "Unknown RAID level '%s'.", levelname);
2285			return (-4);
2286		}
2287		numdisks = *nargs - 3;
2288		force = gctl_get_paraml(req, "force", sizeof(*force));
2289		if (!g_raid_md_ddf_supported(level, qual, numdisks,
2290		    force ? *force : 0)) {
2291			gctl_error(req, "Unsupported RAID level "
2292			    "(0x%02x/0x%02x), or number of disks (%d).",
2293			    level, qual, numdisks);
2294			return (-5);
2295		}
2296
2297		/* Search for disks, connect them and probe. */
2298		size = INT64_MAX;
2299		sectorsize = 0;
2300		bzero(disks, sizeof(disks));
2301		bzero(offs, sizeof(offs));
2302		for (i = 0; i < numdisks; i++) {
2303			snprintf(arg, sizeof(arg), "arg%d", i + 3);
2304			diskname = gctl_get_asciiparam(req, arg);
2305			if (diskname == NULL) {
2306				gctl_error(req, "No disk name (%s).", arg);
2307				error = -6;
2308				break;
2309			}
2310			if (strcmp(diskname, "NONE") == 0)
2311				continue;
2312
2313			TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
2314				if (disk->d_consumer != NULL &&
2315				    disk->d_consumer->provider != NULL &&
2316				    strcmp(disk->d_consumer->provider->name,
2317				     diskname) == 0)
2318					break;
2319			}
2320			if (disk != NULL) {
2321				if (disk->d_state != G_RAID_DISK_S_ACTIVE) {
2322					gctl_error(req, "Disk '%s' is in a "
2323					    "wrong state (%s).", diskname,
2324					    g_raid_disk_state2str(disk->d_state));
2325					error = -7;
2326					break;
2327				}
2328				pd = disk->d_md_data;
2329				if (ddf_meta_count_vdc(&pd->pd_meta, NULL) >=
2330				    GET16(&pd->pd_meta, hdr->Max_Partitions)) {
2331					gctl_error(req, "No free partitions "
2332					    "on disk '%s'.",
2333					    diskname);
2334					error = -7;
2335					break;
2336				}
2337				pp = disk->d_consumer->provider;
2338				disks[i] = disk;
2339				ddf_meta_unused_range(&pd->pd_meta,
2340				    &offs[i], &esize);
2341				offs[i] *= pp->sectorsize;
2342				size = MIN(size, (off_t)esize * pp->sectorsize);
2343				sectorsize = MAX(sectorsize, pp->sectorsize);
2344				continue;
2345			}
2346
2347			g_topology_lock();
2348			cp = g_raid_open_consumer(sc, diskname);
2349			if (cp == NULL) {
2350				gctl_error(req, "Can't open disk '%s'.",
2351				    diskname);
2352				g_topology_unlock();
2353				error = -8;
2354				break;
2355			}
2356			pp = cp->provider;
2357			pd = malloc(sizeof(*pd), M_MD_DDF, M_WAITOK | M_ZERO);
2358			disk = g_raid_create_disk(sc);
2359			disk->d_md_data = (void *)pd;
2360			disk->d_consumer = cp;
2361			disks[i] = disk;
2362			cp->private = disk;
2363			ddf_meta_create(disk, &mdi->mdio_meta);
2364			if (mdi->mdio_meta.hdr == NULL)
2365				ddf_meta_copy(&mdi->mdio_meta, &pd->pd_meta);
2366			else
2367				ddf_meta_update(&mdi->mdio_meta, &pd->pd_meta);
2368			g_topology_unlock();
2369
2370			g_raid_get_disk_info(disk);
2371
2372			/* Reserve some space for metadata. */
2373			size = MIN(size, GET64(&pd->pd_meta,
2374			    pdr->entry[0].Configured_Size) * pp->sectorsize);
2375			sectorsize = MAX(sectorsize, pp->sectorsize);
2376		}
2377		if (error != 0) {
2378			for (i = 0; i < numdisks; i++) {
2379				if (disks[i] != NULL &&
2380				    disks[i]->d_state == G_RAID_DISK_S_NONE)
2381					g_raid_destroy_disk(disks[i]);
2382			}
2383			return (error);
2384		}
2385
2386		if (sectorsize <= 0) {
2387			gctl_error(req, "Can't get sector size.");
2388			return (-8);
2389		}
2390
2391		/* Handle size argument. */
2392		len = sizeof(*sizearg);
2393		sizearg = gctl_get_param(req, "size", &len);
2394		if (sizearg != NULL && len == sizeof(*sizearg) &&
2395		    *sizearg > 0) {
2396			if (*sizearg > size) {
2397				gctl_error(req, "Size too big %lld > %lld.",
2398				    (long long)*sizearg, (long long)size);
2399				return (-9);
2400			}
2401			size = *sizearg;
2402		}
2403
2404		/* Handle strip argument. */
2405		strip = 131072;
2406		len = sizeof(*striparg);
2407		striparg = gctl_get_param(req, "strip", &len);
2408		if (striparg != NULL && len == sizeof(*striparg) &&
2409		    *striparg > 0) {
2410			if (*striparg < sectorsize) {
2411				gctl_error(req, "Strip size too small.");
2412				return (-10);
2413			}
2414			if (*striparg % sectorsize != 0) {
2415				gctl_error(req, "Incorrect strip size.");
2416				return (-11);
2417			}
2418			strip = *striparg;
2419		}
2420
2421		/* Round size down to strip or sector. */
2422		if (level == G_RAID_VOLUME_RL_RAID1 ||
2423		    level == G_RAID_VOLUME_RL_RAID3 ||
2424		    level == G_RAID_VOLUME_RL_SINGLE ||
2425		    level == G_RAID_VOLUME_RL_CONCAT)
2426			size -= (size % sectorsize);
2427		else if (level == G_RAID_VOLUME_RL_RAID1E &&
2428		    (numdisks & 1) != 0)
2429			size -= (size % (2 * strip));
2430		else
2431			size -= (size % strip);
2432		if (size <= 0) {
2433			gctl_error(req, "Size too small.");
2434			return (-13);
2435		}
2436
2437		/* We have all we need, create things: volume, ... */
2438		pv = malloc(sizeof(*pv), M_MD_DDF, M_WAITOK | M_ZERO);
2439		ddf_vol_meta_create(&pv->pv_meta, &mdi->mdio_meta);
2440		pv->pv_started = 1;
2441		vol = g_raid_create_volume(sc, volname, -1);
2442		vol->v_md_data = pv;
2443		vol->v_raid_level = level;
2444		vol->v_raid_level_qualifier = qual;
2445		vol->v_strip_size = strip;
2446		vol->v_disks_count = numdisks;
2447		if (level == G_RAID_VOLUME_RL_RAID0 ||
2448		    level == G_RAID_VOLUME_RL_CONCAT ||
2449		    level == G_RAID_VOLUME_RL_SINGLE)
2450			vol->v_mediasize = size * numdisks;
2451		else if (level == G_RAID_VOLUME_RL_RAID1)
2452			vol->v_mediasize = size;
2453		else if (level == G_RAID_VOLUME_RL_RAID3 ||
2454		    level == G_RAID_VOLUME_RL_RAID4 ||
2455		    level == G_RAID_VOLUME_RL_RAID5)
2456			vol->v_mediasize = size * (numdisks - 1);
2457		else if (level == G_RAID_VOLUME_RL_RAID5R) {
2458			vol->v_mediasize = size * (numdisks - 1);
2459			vol->v_rotate_parity = 1024;
2460		} else if (level == G_RAID_VOLUME_RL_RAID6 ||
2461		    level == G_RAID_VOLUME_RL_RAID5E ||
2462		    level == G_RAID_VOLUME_RL_RAID5EE)
2463			vol->v_mediasize = size * (numdisks - 2);
2464		else if (level == G_RAID_VOLUME_RL_RAIDMDF) {
2465			if (numdisks < 5)
2466				vol->v_mdf_pdisks = 2;
2467			else
2468				vol->v_mdf_pdisks = 3;
2469			vol->v_mdf_polynomial = 0x11d;
2470			vol->v_mdf_method = 0x00;
2471			vol->v_mediasize = size * (numdisks - vol->v_mdf_pdisks);
2472		} else { /* RAID1E */
2473			vol->v_mediasize = ((size * numdisks) / strip / 2) *
2474			    strip;
2475		}
2476		vol->v_sectorsize = sectorsize;
2477		g_raid_start_volume(vol);
2478
2479		/* , and subdisks. */
2480		for (i = 0; i < numdisks; i++) {
2481			disk = disks[i];
2482			sd = &vol->v_subdisks[i];
2483			sd->sd_disk = disk;
2484			sd->sd_offset = offs[i];
2485			sd->sd_size = size;
2486			if (disk == NULL)
2487				continue;
2488			TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
2489			g_raid_change_disk_state(disk,
2490			    G_RAID_DISK_S_ACTIVE);
2491			g_raid_change_subdisk_state(sd,
2492			    G_RAID_SUBDISK_S_ACTIVE);
2493			g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
2494			    G_RAID_EVENT_SUBDISK);
2495		}
2496
2497		/* Write metadata based on created entities. */
2498		G_RAID_DEBUG1(0, sc, "Array started.");
2499		g_raid_md_write_ddf(md, vol, NULL, NULL);
2500
2501		/* Pickup any STALE/SPARE disks to refill array if needed. */
2502		g_raid_md_ddf_refill(sc);
2503
2504		g_raid_event_send(vol, G_RAID_VOLUME_E_START,
2505		    G_RAID_EVENT_VOLUME);
2506		return (0);
2507	}
2508	if (strcmp(verb, "add") == 0) {
2509
2510		gctl_error(req, "`add` command is not applicable, "
2511		    "use `label` instead.");
2512		return (-99);
2513	}
2514	if (strcmp(verb, "delete") == 0) {
2515
2516		nodename = gctl_get_asciiparam(req, "arg0");
2517		if (nodename != NULL && strcasecmp(sc->sc_name, nodename) != 0)
2518			nodename = NULL;
2519
2520		/* Full node destruction. */
2521		if (*nargs == 1 && nodename != NULL) {
2522			/* Check if some volume is still open. */
2523			force = gctl_get_paraml(req, "force", sizeof(*force));
2524			if (force != NULL && *force == 0 &&
2525			    g_raid_nopens(sc) != 0) {
2526				gctl_error(req, "Some volume is still open.");
2527				return (-4);
2528			}
2529
2530			TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
2531				if (disk->d_consumer)
2532					ddf_meta_erase(disk->d_consumer);
2533			}
2534			g_raid_destroy_node(sc, 0);
2535			return (0);
2536		}
2537
2538		/* Destroy specified volume. If it was last - all node. */
2539		if (*nargs > 2) {
2540			gctl_error(req, "Invalid number of arguments.");
2541			return (-1);
2542		}
2543		volname = gctl_get_asciiparam(req,
2544		    nodename != NULL ? "arg1" : "arg0");
2545		if (volname == NULL) {
2546			gctl_error(req, "No volume name.");
2547			return (-2);
2548		}
2549
2550		/* Search for volume. */
2551		TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
2552			if (strcmp(vol->v_name, volname) == 0)
2553				break;
2554			pp = vol->v_provider;
2555			if (pp == NULL)
2556				continue;
2557			if (strcmp(pp->name, volname) == 0)
2558				break;
2559			if (strncmp(pp->name, "raid/", 5) == 0 &&
2560			    strcmp(pp->name + 5, volname) == 0)
2561				break;
2562		}
2563		if (vol == NULL) {
2564			i = strtol(volname, &tmp, 10);
2565			if (verb != volname && tmp[0] == 0) {
2566				TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
2567					if (vol->v_global_id == i)
2568						break;
2569				}
2570			}
2571		}
2572		if (vol == NULL) {
2573			gctl_error(req, "Volume '%s' not found.", volname);
2574			return (-3);
2575		}
2576
2577		/* Check if volume is still open. */
2578		force = gctl_get_paraml(req, "force", sizeof(*force));
2579		if (force != NULL && *force == 0 &&
2580		    vol->v_provider_open != 0) {
2581			gctl_error(req, "Volume is still open.");
2582			return (-4);
2583		}
2584
2585		/* Destroy volume and potentially node. */
2586		i = 0;
2587		TAILQ_FOREACH(vol1, &sc->sc_volumes, v_next)
2588			i++;
2589		if (i >= 2) {
2590			g_raid_destroy_volume(vol);
2591			g_raid_md_ddf_purge_disks(sc);
2592			g_raid_md_write_ddf(md, NULL, NULL, NULL);
2593		} else {
2594			TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
2595				if (disk->d_consumer)
2596					ddf_meta_erase(disk->d_consumer);
2597			}
2598			g_raid_destroy_node(sc, 0);
2599		}
2600		return (0);
2601	}
2602	if (strcmp(verb, "remove") == 0 ||
2603	    strcmp(verb, "fail") == 0) {
2604		if (*nargs < 2) {
2605			gctl_error(req, "Invalid number of arguments.");
2606			return (-1);
2607		}
2608		for (i = 1; i < *nargs; i++) {
2609			snprintf(arg, sizeof(arg), "arg%d", i);
2610			diskname = gctl_get_asciiparam(req, arg);
2611			if (diskname == NULL) {
2612				gctl_error(req, "No disk name (%s).", arg);
2613				error = -2;
2614				break;
2615			}
2616			if (strncmp(diskname, "/dev/", 5) == 0)
2617				diskname += 5;
2618
2619			TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
2620				if (disk->d_consumer != NULL &&
2621				    disk->d_consumer->provider != NULL &&
2622				    strcmp(disk->d_consumer->provider->name,
2623				     diskname) == 0)
2624					break;
2625			}
2626			if (disk == NULL) {
2627				gctl_error(req, "Disk '%s' not found.",
2628				    diskname);
2629				error = -3;
2630				break;
2631			}
2632
2633			if (strcmp(verb, "fail") == 0) {
2634				g_raid_md_fail_disk_ddf(md, NULL, disk);
2635				continue;
2636			}
2637
2638			/* Erase metadata on deleting disk and destroy it. */
2639			ddf_meta_erase(disk->d_consumer);
2640			g_raid_destroy_disk(disk);
2641		}
2642		g_raid_md_ddf_purge_volumes(sc);
2643
2644		/* Write updated metadata to remaining disks. */
2645		g_raid_md_write_ddf(md, NULL, NULL, NULL);
2646
2647		/* Check if anything left. */
2648		if (g_raid_ndisks(sc, -1) == 0)
2649			g_raid_destroy_node(sc, 0);
2650		else
2651			g_raid_md_ddf_refill(sc);
2652		return (error);
2653	}
2654	if (strcmp(verb, "insert") == 0) {
2655		if (*nargs < 2) {
2656			gctl_error(req, "Invalid number of arguments.");
2657			return (-1);
2658		}
2659		for (i = 1; i < *nargs; i++) {
2660			/* Get disk name. */
2661			snprintf(arg, sizeof(arg), "arg%d", i);
2662			diskname = gctl_get_asciiparam(req, arg);
2663			if (diskname == NULL) {
2664				gctl_error(req, "No disk name (%s).", arg);
2665				error = -3;
2666				break;
2667			}
2668
2669			/* Try to find provider with specified name. */
2670			g_topology_lock();
2671			cp = g_raid_open_consumer(sc, diskname);
2672			if (cp == NULL) {
2673				gctl_error(req, "Can't open disk '%s'.",
2674				    diskname);
2675				g_topology_unlock();
2676				error = -4;
2677				break;
2678			}
2679			pp = cp->provider;
2680			g_topology_unlock();
2681
2682			pd = malloc(sizeof(*pd), M_MD_DDF, M_WAITOK | M_ZERO);
2683
2684			disk = g_raid_create_disk(sc);
2685			disk->d_consumer = cp;
2686			disk->d_md_data = (void *)pd;
2687			cp->private = disk;
2688
2689			g_raid_get_disk_info(disk);
2690
2691			/* Welcome the "new" disk. */
2692			g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE);
2693			ddf_meta_create(disk, &mdi->mdio_meta);
2694			sa = ddf_meta_find_sa(&pd->pd_meta, 1);
2695			if (sa != NULL) {
2696				SET32D(&pd->pd_meta, sa->Signature,
2697				    DDF_SA_SIGNATURE);
2698				SET8D(&pd->pd_meta, sa->Spare_Type, 0);
2699				SET16D(&pd->pd_meta, sa->Populated_SAEs, 0);
2700				SET16D(&pd->pd_meta, sa->MAX_SAE_Supported,
2701				    (GET16(&pd->pd_meta, hdr->Configuration_Record_Length) *
2702				     pd->pd_meta.sectorsize -
2703				     sizeof(struct ddf_sa_record)) /
2704				    sizeof(struct ddf_sa_entry));
2705			}
2706			if (mdi->mdio_meta.hdr == NULL)
2707				ddf_meta_copy(&mdi->mdio_meta, &pd->pd_meta);
2708			else
2709				ddf_meta_update(&mdi->mdio_meta, &pd->pd_meta);
2710			g_raid_md_write_ddf(md, NULL, NULL, NULL);
2711			g_raid_md_ddf_refill(sc);
2712		}
2713		return (error);
2714	}
2715	return (-100);
2716}
2717
2718static int
2719g_raid_md_write_ddf(struct g_raid_md_object *md, struct g_raid_volume *tvol,
2720    struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
2721{
2722	struct g_raid_softc *sc;
2723	struct g_raid_volume *vol;
2724	struct g_raid_subdisk *sd;
2725	struct g_raid_disk *disk;
2726	struct g_raid_md_ddf_perdisk *pd;
2727	struct g_raid_md_ddf_pervolume *pv;
2728	struct g_raid_md_ddf_object *mdi;
2729	struct ddf_meta *gmeta;
2730	struct ddf_vol_meta *vmeta;
2731	struct ddf_vdc_record *vdc;
2732	struct ddf_sa_record *sa;
2733	uint64_t *val2;
2734	int i, j, pos, bvd, size;
2735
2736	sc = md->mdo_softc;
2737	mdi = (struct g_raid_md_ddf_object *)md;
2738	gmeta = &mdi->mdio_meta;
2739
2740	if (sc->sc_stopping == G_RAID_DESTROY_HARD)
2741		return (0);
2742
2743	/*
2744	 * Clear disk flags to let only really needed ones to be reset.
2745	 * Do it only if there are no volumes in starting state now,
2746	 * as they can update disk statuses yet and we may kill innocent.
2747	 */
2748	if (mdi->mdio_starting == 0) {
2749		for (i = 0; i < GET16(gmeta, pdr->Populated_PDEs); i++) {
2750			if (isff(gmeta->pdr->entry[i].PD_GUID, 24))
2751				continue;
2752			SET16(gmeta, pdr->entry[i].PD_Type,
2753			    GET16(gmeta, pdr->entry[i].PD_Type) &
2754			    ~(DDF_PDE_PARTICIPATING |
2755			      DDF_PDE_GLOBAL_SPARE | DDF_PDE_CONFIG_SPARE));
2756			if ((GET16(gmeta, pdr->entry[i].PD_State) &
2757			    DDF_PDE_PFA) == 0)
2758				SET16(gmeta, pdr->entry[i].PD_State, 0);
2759		}
2760	}
2761
2762	/* Generate/update new per-volume metadata. */
2763	TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
2764		pv = (struct g_raid_md_ddf_pervolume *)vol->v_md_data;
2765		if (vol->v_stopping || !pv->pv_started)
2766			continue;
2767		vmeta = &pv->pv_meta;
2768
2769		SET32(vmeta, vdc->Sequence_Number,
2770		    GET32(vmeta, vdc->Sequence_Number) + 1);
2771		if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E &&
2772		    vol->v_disks_count % 2 == 0)
2773			SET16(vmeta, vdc->Primary_Element_Count, 2);
2774		else
2775			SET16(vmeta, vdc->Primary_Element_Count,
2776			    vol->v_disks_count);
2777		SET8(vmeta, vdc->Stripe_Size,
2778		    ffs(vol->v_strip_size / vol->v_sectorsize) - 1);
2779		if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E &&
2780		    vol->v_disks_count % 2 == 0) {
2781			SET8(vmeta, vdc->Primary_RAID_Level,
2782			    DDF_VDCR_RAID1);
2783			SET8(vmeta, vdc->RLQ, 0);
2784			SET8(vmeta, vdc->Secondary_Element_Count,
2785			    vol->v_disks_count / 2);
2786			SET8(vmeta, vdc->Secondary_RAID_Level, 0);
2787		} else {
2788			SET8(vmeta, vdc->Primary_RAID_Level,
2789			    vol->v_raid_level);
2790			SET8(vmeta, vdc->RLQ,
2791			    vol->v_raid_level_qualifier);
2792			SET8(vmeta, vdc->Secondary_Element_Count, 1);
2793			SET8(vmeta, vdc->Secondary_RAID_Level, 0);
2794		}
2795		SET8(vmeta, vdc->Secondary_Element_Seq, 0);
2796		SET64(vmeta, vdc->Block_Count, 0);
2797		SET64(vmeta, vdc->VD_Size, vol->v_mediasize / vol->v_sectorsize);
2798		SET16(vmeta, vdc->Block_Size, vol->v_sectorsize);
2799		SET8(vmeta, vdc->Rotate_Parity_count,
2800		    fls(vol->v_rotate_parity) - 1);
2801		SET8(vmeta, vdc->MDF_Parity_Disks, vol->v_mdf_pdisks);
2802		SET16(vmeta, vdc->MDF_Parity_Generator_Polynomial,
2803		    vol->v_mdf_polynomial);
2804		SET8(vmeta, vdc->MDF_Constant_Generation_Method,
2805		    vol->v_mdf_method);
2806
2807		SET16(vmeta, vde->VD_Number, vol->v_global_id);
2808		if (vol->v_state <= G_RAID_VOLUME_S_BROKEN)
2809			SET8(vmeta, vde->VD_State, DDF_VDE_FAILED);
2810		else if (vol->v_state <= G_RAID_VOLUME_S_DEGRADED)
2811			SET8(vmeta, vde->VD_State, DDF_VDE_DEGRADED);
2812		else if (vol->v_state <= G_RAID_VOLUME_S_SUBOPTIMAL)
2813			SET8(vmeta, vde->VD_State, DDF_VDE_PARTIAL);
2814		else
2815			SET8(vmeta, vde->VD_State, DDF_VDE_OPTIMAL);
2816		if (vol->v_dirty ||
2817		    g_raid_nsubdisks(vol, G_RAID_SUBDISK_S_STALE) > 0 ||
2818		    g_raid_nsubdisks(vol, G_RAID_SUBDISK_S_RESYNC) > 0)
2819			SET8(vmeta, vde->VD_State,
2820			    GET8(vmeta, vde->VD_State) | DDF_VDE_DIRTY);
2821		SET8(vmeta, vde->Init_State, DDF_VDE_INIT_FULL); // XXX
2822		ddf_meta_put_name(vmeta, vol->v_name);
2823
2824		for (i = 0; i < vol->v_disks_count; i++) {
2825			sd = &vol->v_subdisks[i];
2826			bvd = i / GET16(vmeta, vdc->Primary_Element_Count);
2827			pos = i % GET16(vmeta, vdc->Primary_Element_Count);
2828			disk = sd->sd_disk;
2829			if (disk != NULL) {
2830				pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
2831				if (vmeta->bvdc[bvd] == NULL) {
2832					size = GET16(vmeta,
2833					    hdr->Configuration_Record_Length) *
2834					    vmeta->sectorsize;
2835					vmeta->bvdc[bvd] = malloc(size,
2836					    M_MD_DDF, M_WAITOK);
2837					memset(vmeta->bvdc[bvd], 0xff, size);
2838				}
2839				memcpy(vmeta->bvdc[bvd], vmeta->vdc,
2840				    sizeof(struct ddf_vdc_record));
2841				SET8(vmeta, bvdc[bvd]->Secondary_Element_Seq, bvd);
2842				SET64(vmeta, bvdc[bvd]->Block_Count,
2843				    sd->sd_size / vol->v_sectorsize);
2844				SET32(vmeta, bvdc[bvd]->Physical_Disk_Sequence[pos],
2845				    GET32(&pd->pd_meta, pdd->PD_Reference));
2846				val2 = (uint64_t *)&(vmeta->bvdc[bvd]->Physical_Disk_Sequence[
2847				    GET16(vmeta, hdr->Max_Primary_Element_Entries)]);
2848				SET64P(vmeta, val2 + pos,
2849				    sd->sd_offset / vol->v_sectorsize);
2850			}
2851			if (vmeta->bvdc[bvd] == NULL)
2852				continue;
2853
2854			j = ddf_meta_find_pd(gmeta, NULL,
2855			    GET32(vmeta, bvdc[bvd]->Physical_Disk_Sequence[pos]));
2856			if (j < 0)
2857				continue;
2858			SET16(gmeta, pdr->entry[j].PD_Type,
2859			    GET16(gmeta, pdr->entry[j].PD_Type) |
2860			    DDF_PDE_PARTICIPATING);
2861			if (sd->sd_state == G_RAID_SUBDISK_S_NONE)
2862				SET16(gmeta, pdr->entry[j].PD_State,
2863				    GET16(gmeta, pdr->entry[j].PD_State) |
2864				    (DDF_PDE_FAILED | DDF_PDE_MISSING));
2865			else if (sd->sd_state == G_RAID_SUBDISK_S_FAILED)
2866				SET16(gmeta, pdr->entry[j].PD_State,
2867				    GET16(gmeta, pdr->entry[j].PD_State) |
2868				    (DDF_PDE_FAILED | DDF_PDE_PFA));
2869			else if (sd->sd_state <= G_RAID_SUBDISK_S_REBUILD)
2870				SET16(gmeta, pdr->entry[j].PD_State,
2871				    GET16(gmeta, pdr->entry[j].PD_State) |
2872				    DDF_PDE_REBUILD);
2873			else
2874				SET16(gmeta, pdr->entry[j].PD_State,
2875				    GET16(gmeta, pdr->entry[j].PD_State) |
2876				    DDF_PDE_ONLINE);
2877		}
2878	}
2879
2880	/* Mark spare and failed disks as such. */
2881	TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
2882		pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
2883		i = ddf_meta_find_pd(gmeta, NULL,
2884		    GET32(&pd->pd_meta, pdd->PD_Reference));
2885		if (i < 0)
2886			continue;
2887		if (disk->d_state == G_RAID_DISK_S_FAILED) {
2888			SET16(gmeta, pdr->entry[i].PD_State,
2889			    GET16(gmeta, pdr->entry[i].PD_State) |
2890			    (DDF_PDE_FAILED | DDF_PDE_PFA));
2891		}
2892		if (disk->d_state != G_RAID_DISK_S_SPARE)
2893			continue;
2894		sa = ddf_meta_find_sa(&pd->pd_meta, 0);
2895		if (sa == NULL ||
2896		    (GET8D(&pd->pd_meta, sa->Spare_Type) &
2897		     DDF_SAR_TYPE_DEDICATED) == 0) {
2898			SET16(gmeta, pdr->entry[i].PD_Type,
2899			    GET16(gmeta, pdr->entry[i].PD_Type) |
2900			    DDF_PDE_GLOBAL_SPARE);
2901		} else {
2902			SET16(gmeta, pdr->entry[i].PD_Type,
2903			    GET16(gmeta, pdr->entry[i].PD_Type) |
2904			    DDF_PDE_CONFIG_SPARE);
2905		}
2906		SET16(gmeta, pdr->entry[i].PD_State,
2907		    GET16(gmeta, pdr->entry[i].PD_State) |
2908		    DDF_PDE_ONLINE);
2909	}
2910
2911	/* Remove disks without "participating" flag (unused). */
2912	for (i = 0, j = -1; i < GET16(gmeta, pdr->Populated_PDEs); i++) {
2913		if (isff(gmeta->pdr->entry[i].PD_GUID, 24))
2914			continue;
2915		if ((GET16(gmeta, pdr->entry[i].PD_Type) &
2916		    (DDF_PDE_PARTICIPATING |
2917		     DDF_PDE_GLOBAL_SPARE | DDF_PDE_CONFIG_SPARE)) != 0 ||
2918		    g_raid_md_ddf_get_disk(sc,
2919		     NULL, GET32(gmeta, pdr->entry[i].PD_Reference)) != NULL)
2920			j = i;
2921		else
2922			memset(&gmeta->pdr->entry[i], 0xff,
2923			    sizeof(struct ddf_pd_entry));
2924	}
2925	SET16(gmeta, pdr->Populated_PDEs, j + 1);
2926
2927	/* Update per-disk metadata and write them. */
2928	TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
2929		pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
2930		if (disk->d_state != G_RAID_DISK_S_ACTIVE &&
2931		    disk->d_state != G_RAID_DISK_S_SPARE)
2932			continue;
2933		/* Update PDR. */
2934		memcpy(pd->pd_meta.pdr, gmeta->pdr,
2935		    GET32(&pd->pd_meta, hdr->pdr_length) *
2936		    pd->pd_meta.sectorsize);
2937		/* Update VDR. */
2938		SET16(&pd->pd_meta, vdr->Populated_VDEs, 0);
2939		TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
2940			if (vol->v_stopping)
2941				continue;
2942			pv = (struct g_raid_md_ddf_pervolume *)vol->v_md_data;
2943			i = ddf_meta_find_vd(&pd->pd_meta,
2944			    pv->pv_meta.vde->VD_GUID);
2945			if (i < 0)
2946				i = ddf_meta_find_vd(&pd->pd_meta, NULL);
2947			if (i >= 0)
2948				memcpy(&pd->pd_meta.vdr->entry[i],
2949				    pv->pv_meta.vde,
2950				    sizeof(struct ddf_vd_entry));
2951		}
2952		/* Update VDC. */
2953		if (mdi->mdio_starting == 0) {
2954			/* Remove all VDCs to restore needed later. */
2955			j = GETCRNUM(&pd->pd_meta);
2956			for (i = 0; i < j; i++) {
2957				vdc = GETVDCPTR(&pd->pd_meta, i);
2958				if (GET32D(&pd->pd_meta, vdc->Signature) !=
2959				    DDF_VDCR_SIGNATURE)
2960					continue;
2961				SET32D(&pd->pd_meta, vdc->Signature, 0xffffffff);
2962			}
2963		}
2964		TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) {
2965			vol = sd->sd_volume;
2966			if (vol->v_stopping)
2967				continue;
2968			pv = (struct g_raid_md_ddf_pervolume *)vol->v_md_data;
2969			vmeta = &pv->pv_meta;
2970			vdc = ddf_meta_find_vdc(&pd->pd_meta,
2971			    vmeta->vde->VD_GUID);
2972			if (vdc == NULL)
2973				vdc = ddf_meta_find_vdc(&pd->pd_meta, NULL);
2974			if (vdc != NULL) {
2975				bvd = sd->sd_pos / GET16(vmeta,
2976				    vdc->Primary_Element_Count);
2977				memcpy(vdc, vmeta->bvdc[bvd],
2978				    GET16(&pd->pd_meta,
2979				    hdr->Configuration_Record_Length) *
2980				    pd->pd_meta.sectorsize);
2981			}
2982		}
2983		G_RAID_DEBUG(1, "Writing DDF metadata to %s",
2984		    g_raid_get_diskname(disk));
2985		g_raid_md_ddf_print(&pd->pd_meta);
2986		ddf_meta_write(disk->d_consumer, &pd->pd_meta);
2987	}
2988	return (0);
2989}
2990
2991static int
2992g_raid_md_fail_disk_ddf(struct g_raid_md_object *md,
2993    struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
2994{
2995	struct g_raid_softc *sc;
2996	struct g_raid_md_ddf_perdisk *pd;
2997	struct g_raid_subdisk *sd;
2998	int i;
2999
3000	sc = md->mdo_softc;
3001	pd = (struct g_raid_md_ddf_perdisk *)tdisk->d_md_data;
3002
3003	/* We can't fail disk that is not a part of array now. */
3004	if (tdisk->d_state != G_RAID_DISK_S_ACTIVE)
3005		return (-1);
3006
3007	/*
3008	 * Mark disk as failed in metadata and try to write that metadata
3009	 * to the disk itself to prevent it's later resurrection as STALE.
3010	 */
3011	G_RAID_DEBUG(1, "Writing DDF metadata to %s",
3012	    g_raid_get_diskname(tdisk));
3013	i = ddf_meta_find_pd(&pd->pd_meta, NULL, GET32(&pd->pd_meta, pdd->PD_Reference));
3014	SET16(&pd->pd_meta, pdr->entry[i].PD_State, DDF_PDE_FAILED | DDF_PDE_PFA);
3015	if (tdisk->d_consumer != NULL)
3016		ddf_meta_write(tdisk->d_consumer, &pd->pd_meta);
3017
3018	/* Change states. */
3019	g_raid_change_disk_state(tdisk, G_RAID_DISK_S_FAILED);
3020	TAILQ_FOREACH(sd, &tdisk->d_subdisks, sd_next) {
3021		g_raid_change_subdisk_state(sd,
3022		    G_RAID_SUBDISK_S_FAILED);
3023		g_raid_event_send(sd, G_RAID_SUBDISK_E_FAILED,
3024		    G_RAID_EVENT_SUBDISK);
3025	}
3026
3027	/* Write updated metadata to remaining disks. */
3028	g_raid_md_write_ddf(md, NULL, NULL, tdisk);
3029
3030	g_raid_md_ddf_refill(sc);
3031	return (0);
3032}
3033
3034static int
3035g_raid_md_free_disk_ddf(struct g_raid_md_object *md,
3036    struct g_raid_disk *disk)
3037{
3038	struct g_raid_md_ddf_perdisk *pd;
3039
3040	pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
3041	ddf_meta_free(&pd->pd_meta);
3042	free(pd, M_MD_DDF);
3043	disk->d_md_data = NULL;
3044	return (0);
3045}
3046
3047static int
3048g_raid_md_free_volume_ddf(struct g_raid_md_object *md,
3049    struct g_raid_volume *vol)
3050{
3051	struct g_raid_md_ddf_object *mdi;
3052	struct g_raid_md_ddf_pervolume *pv;
3053
3054	mdi = (struct g_raid_md_ddf_object *)md;
3055	pv = (struct g_raid_md_ddf_pervolume *)vol->v_md_data;
3056	ddf_vol_meta_free(&pv->pv_meta);
3057	if (!pv->pv_started) {
3058		pv->pv_started = 1;
3059		mdi->mdio_starting--;
3060		callout_stop(&pv->pv_start_co);
3061	}
3062	free(pv, M_MD_DDF);
3063	vol->v_md_data = NULL;
3064	return (0);
3065}
3066
3067static int
3068g_raid_md_free_ddf(struct g_raid_md_object *md)
3069{
3070	struct g_raid_md_ddf_object *mdi;
3071
3072	mdi = (struct g_raid_md_ddf_object *)md;
3073	if (!mdi->mdio_started) {
3074		mdi->mdio_started = 0;
3075		callout_stop(&mdi->mdio_start_co);
3076		G_RAID_DEBUG1(1, md->mdo_softc,
3077		    "root_mount_rel %p", mdi->mdio_rootmount);
3078		root_mount_rel(mdi->mdio_rootmount);
3079		mdi->mdio_rootmount = NULL;
3080	}
3081	ddf_meta_free(&mdi->mdio_meta);
3082	return (0);
3083}
3084
3085G_RAID_MD_DECLARE(ddf, "DDF");
3086