sys/geom/raid/md_ddf.c

   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
  47 static 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
  57 struct 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
  69 struct 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
  79 struct g_raid_md_ddf_perdisk {
  80         struct ddf_meta  pd_meta;
  81 };
  82
  83 struct 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
  89 struct 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
  99 static g_raid_md_create_req_t g_raid_md_create_req_ddf;
 100 static g_raid_md_taste_t g_raid_md_taste_ddf;
 101 static g_raid_md_event_t g_raid_md_event_ddf;
 102 static g_raid_md_volume_event_t g_raid_md_volume_event_ddf;
 103 static g_raid_md_ctl_t g_raid_md_ctl_ddf;
 104 static g_raid_md_write_t g_raid_md_write_ddf;
 105 static g_raid_md_fail_disk_t g_raid_md_fail_disk_ddf;
 106 static g_raid_md_free_disk_t g_raid_md_free_disk_ddf;
 107 static g_raid_md_free_volume_t g_raid_md_free_volume_ddf;
 108 static g_raid_md_free_t g_raid_md_free_ddf;
 109
 110 static 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
 124 static 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
 188 static int
 189 isff(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
 199 static void
 200 print_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
 219 static void
 220 g_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
 425 static int
 426 ddf_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
 450 static int
 451 ddf_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
 472 static struct ddf_vdc_record *
 473 ddf_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
 493 static int
 494 ddf_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
 511 static int
 512 ddf_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
 538 static struct ddf_sa_record *
 539 ddf_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
 561 static void
 562 ddf_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
 755 static void
 756 ddf_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
 782 static void
 783 ddf_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
 807 static void
 808 ddf_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
 841 static void
 842 ddf_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
 871 static void
 872 ddf_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
 932 static void
 933 ddf_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
 961 static int
 962 ddf_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
1014 static void
1015 ddf_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
1028 static void
1029 ddf_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
1038 static int
1039 ddf_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
1099 doread:
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) {
1106 readerror:
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) {
1127 hdrerror:
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         /* Read virtual disk records. */
1187         buf = g_read_data(cp, (lba + GET32(meta, hdr->vdr_section)) * ss,
1188             GET32(meta, hdr->vdr_length) * ss, &error);
1189         if (buf == NULL)
1190                 goto readerror;
1191         meta->vdr = malloc(GET32(meta, hdr->vdr_length) * ss, M_MD_DDF, M_WAITOK);
1192         memcpy(meta->vdr, buf, GET32(meta, hdr->vdr_length) * ss);
1193         g_free(buf);
1194         if (GET32(meta, vdr->Signature) != DDF_VD_RECORD_SIGNATURE)
1195                 goto hdrerror;
1196
1197         /* Read configuration records. */
1198         buf = g_read_data(cp, (lba + GET32(meta, hdr->cr_section)) * ss,
1199             GET32(meta, hdr->cr_length) * ss, &error);
1200         if (buf == NULL)
1201                 goto readerror;
1202         meta->cr = malloc(GET32(meta, hdr->cr_length) * ss, M_MD_DDF, M_WAITOK);
1203         memcpy(meta->cr, buf, GET32(meta, hdr->cr_length) * ss);
1204         g_free(buf);
1205
1206         /* Read physical disk data. */
1207         buf = g_read_data(cp, (lba + GET32(meta, hdr->pdd_section)) * ss,
1208             GET32(meta, hdr->pdd_length) * ss, &error);
1209         if (buf == NULL)
1210                 goto readerror;
1211         meta->pdd = malloc(GET32(meta, hdr->pdd_length) * ss, M_MD_DDF, M_WAITOK);
1212         memcpy(meta->pdd, buf, GET32(meta, hdr->pdd_length) * ss);
1213         g_free(buf);
1214         if (GET32(meta, pdd->Signature) != DDF_PDD_SIGNATURE)
1215                 goto hdrerror;
1216         i = ddf_meta_find_pd(meta, NULL, GET32(meta, pdd->PD_Reference));
1217         if (i < 0)
1218                 goto hdrerror;
1219
1220         /* Read BBM Log. */
1221         if (GET32(meta, hdr->bbmlog_section) != 0xffffffff &&
1222             GET32(meta, hdr->bbmlog_length) != 0) {
1223                 buf = g_read_data(cp, (lba + GET32(meta, hdr->bbmlog_section)) * ss,
1224                     GET32(meta, hdr->bbmlog_length) * ss, &error);
1225                 if (buf == NULL)
1226                         goto readerror;
1227                 meta->bbm = malloc(GET32(meta, hdr->bbmlog_length) * ss, M_MD_DDF, M_WAITOK);
1228                 memcpy(meta->bbm, buf, GET32(meta, hdr->bbmlog_length) * ss);
1229                 g_free(buf);
1230                 if (GET32(meta, bbm->Signature) != DDF_BBML_SIGNATURE)
1231                         goto hdrerror;
1232         }
1233
1234 done:
1235         g_free(abuf);
1236         if (error != 0)
1237                 ddf_meta_free(meta);
1238         return (error);
1239 }
1240
1241 static int
1242 ddf_meta_write(struct g_consumer *cp, struct ddf_meta *meta)
1243 {
1244         struct g_provider *pp;
1245         struct ddf_vdc_record *vdc;
1246         off_t alba, plba, slba, lba;
1247         u_int ss, size;
1248         int error, i, num;
1249
1250         pp = cp->provider;
1251         ss = pp->sectorsize;
1252         lba = alba = pp->mediasize / ss - 1;
1253         plba = GET64(meta, hdr->Primary_Header_LBA);
1254         slba = GET64(meta, hdr->Secondary_Header_LBA);
1255
1256 next:
1257         SET8(meta, hdr->Header_Type, (lba == alba) ? DDF_HEADER_ANCHOR :
1258             (lba == plba) ? DDF_HEADER_PRIMARY : DDF_HEADER_SECONDARY);
1259         SET32(meta, hdr->CRC, 0xffffffff);
1260         SET32(meta, hdr->CRC, crc32(meta->hdr, ss));
1261         error = g_write_data(cp, lba * ss, meta->hdr, ss);
1262         if (error != 0) {
1263 err:
1264                 G_RAID_DEBUG(1, "Cannot write metadata to %s (error=%d).",
1265                     pp->name, error);
1266                 if (lba != alba)
1267                         goto done;
1268         }
1269         if (lba == alba) {
1270                 lba = plba;
1271                 goto next;
1272         }
1273
1274         size = GET32(meta, hdr->cd_length) * ss;
1275         SET32(meta, cdr->CRC, 0xffffffff);
1276         SET32(meta, cdr->CRC, crc32(meta->cdr, size));
1277         error = g_write_data(cp, (lba + GET32(meta, hdr->cd_section)) * ss,
1278             meta->cdr, size);
1279         if (error != 0)
1280                 goto err;
1281
1282         size = GET32(meta, hdr->pdr_length) * ss;
1283         SET32(meta, pdr->CRC, 0xffffffff);
1284         SET32(meta, pdr->CRC, crc32(meta->pdr, size));
1285         error = g_write_data(cp, (lba + GET32(meta, hdr->pdr_section)) * ss,
1286             meta->pdr, size);
1287         if (error != 0)
1288                 goto err;
1289
1290         size = GET32(meta, hdr->vdr_length) * ss;
1291         SET32(meta, vdr->CRC, 0xffffffff);
1292         SET32(meta, vdr->CRC, crc32(meta->vdr, size));
1293         error = g_write_data(cp, (lba + GET32(meta, hdr->vdr_section)) * ss,
1294             meta->vdr, size);
1295         if (error != 0)
1296                 goto err;
1297
1298         size = GET16(meta, hdr->Configuration_Record_Length) * ss;
1299         num = GETCRNUM(meta);
1300         for (i = 0; i < num; i++) {
1301                 vdc = GETVDCPTR(meta, i);
1302                 SET32D(meta, vdc->CRC, 0xffffffff);
1303                 SET32D(meta, vdc->CRC, crc32(vdc, size));
1304         }
1305         error = g_write_data(cp, (lba + GET32(meta, hdr->cr_section)) * ss,
1306             meta->cr, size * num);
1307         if (error != 0)
1308                 goto err;
1309
1310         size = GET32(meta, hdr->pdd_length) * ss;
1311         SET32(meta, pdd->CRC, 0xffffffff);
1312         SET32(meta, pdd->CRC, crc32(meta->pdd, size));
1313         error = g_write_data(cp, (lba + GET32(meta, hdr->pdd_section)) * ss,
1314             meta->pdd, size);
1315         if (error != 0)
1316                 goto err;
1317
1318         if (GET32(meta, hdr->bbmlog_length) != 0) {
1319                 size = GET32(meta, hdr->bbmlog_length) * ss;
1320                 SET32(meta, bbm->CRC, 0xffffffff);
1321                 SET32(meta, bbm->CRC, crc32(meta->bbm, size));
1322                 error = g_write_data(cp,
1323                     (lba + GET32(meta, hdr->bbmlog_section)) * ss,
1324                     meta->bbm, size);
1325                 if (error != 0)
1326                         goto err;
1327         }
1328
1329 done:
1330         if (lba == plba && slba != -1) {
1331                 lba = slba;
1332                 goto next;
1333         }
1334
1335         return (error);
1336 }
1337
1338 static int
1339 ddf_meta_erase(struct g_consumer *cp)
1340 {
1341         struct g_provider *pp;
1342         char *buf;
1343         int error;
1344
1345         pp = cp->provider;
1346         buf = malloc(pp->sectorsize, M_MD_DDF, M_WAITOK | M_ZERO);
1347         error = g_write_data(cp, pp->mediasize - pp->sectorsize,
1348             buf, pp->sectorsize);
1349         if (error != 0) {
1350                 G_RAID_DEBUG(1, "Cannot erase metadata on %s (error=%d).",
1351                     pp->name, error);
1352         }
1353         free(buf, M_MD_DDF);
1354         return (error);
1355 }
1356
1357 static struct g_raid_volume *
1358 g_raid_md_ddf_get_volume(struct g_raid_softc *sc, uint8_t *GUID)
1359 {
1360         struct g_raid_volume    *vol;
1361         struct g_raid_md_ddf_pervolume *pv;
1362
1363         TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
1364                 pv = vol->v_md_data;
1365                 if (memcmp(pv->pv_meta.vde->VD_GUID, GUID, 24) == 0)
1366                         break;
1367         }
1368         return (vol);
1369 }
1370
1371 static struct g_raid_disk *
1372 g_raid_md_ddf_get_disk(struct g_raid_softc *sc, uint8_t *GUID, uint32_t id)
1373 {
1374         struct g_raid_disk      *disk;
1375         struct g_raid_md_ddf_perdisk *pd;
1376         struct ddf_meta *meta;
1377
1378         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1379                 pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
1380                 meta = &pd->pd_meta;
1381                 if (GUID != NULL) {
1382                         if (memcmp(meta->pdd->PD_GUID, GUID, 24) == 0)
1383                                 break;
1384                 } else {
1385                         if (GET32(meta, pdd->PD_Reference) == id)
1386                                 break;
1387                 }
1388         }
1389         return (disk);
1390 }
1391
1392 static int
1393 g_raid_md_ddf_purge_volumes(struct g_raid_softc *sc)
1394 {
1395         struct g_raid_volume    *vol, *tvol;
1396         struct g_raid_md_ddf_pervolume *pv;
1397         int i, res;
1398
1399         res = 0;
1400         TAILQ_FOREACH_SAFE(vol, &sc->sc_volumes, v_next, tvol) {
1401                 pv = vol->v_md_data;
1402                 if (vol->v_stopping)
1403                         continue;
1404                 for (i = 0; i < vol->v_disks_count; i++) {
1405                         if (vol->v_subdisks[i].sd_state != G_RAID_SUBDISK_S_NONE)
1406                                 break;
1407                 }
1408                 if (i >= vol->v_disks_count) {
1409                         g_raid_destroy_volume(vol);
1410                         res = 1;
1411                 }
1412         }
1413         return (res);
1414 }
1415
1416 static int
1417 g_raid_md_ddf_purge_disks(struct g_raid_softc *sc)
1418 {
1419 #if 0
1420         struct g_raid_disk      *disk, *tdisk;
1421         struct g_raid_volume    *vol;
1422         struct g_raid_md_ddf_perdisk *pd;
1423         int i, j, res;
1424
1425         res = 0;
1426         TAILQ_FOREACH_SAFE(disk, &sc->sc_disks, d_next, tdisk) {
1427                 if (disk->d_state == G_RAID_DISK_S_SPARE)
1428                         continue;
1429                 pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
1430
1431                 /* Scan for deleted volumes. */
1432                 for (i = 0; i < pd->pd_subdisks; ) {
1433                         vol = g_raid_md_ddf_get_volume(sc,
1434                             pd->pd_meta[i]->volume_id);
1435                         if (vol != NULL && !vol->v_stopping) {
1436                                 i++;
1437                                 continue;
1438                         }
1439                         free(pd->pd_meta[i], M_MD_DDF);
1440                         for (j = i; j < pd->pd_subdisks - 1; j++)
1441                                 pd->pd_meta[j] = pd->pd_meta[j + 1];
1442                         pd->pd_meta[DDF_MAX_SUBDISKS - 1] = NULL;
1443                         pd->pd_subdisks--;
1444                         pd->pd_updated = 1;
1445                 }
1446
1447                 /* If there is no metadata left - erase and delete disk. */
1448                 if (pd->pd_subdisks == 0) {
1449                         ddf_meta_erase(disk->d_consumer);
1450                         g_raid_destroy_disk(disk);
1451                         res = 1;
1452                 }
1453         }
1454         return (res);
1455 #endif
1456         return (0);
1457 }
1458
1459 static int
1460 g_raid_md_ddf_supported(int level, int qual, int disks, int force)
1461 {
1462
1463         if (disks > DDF_MAX_DISKS_HARD)
1464                 return (0);
1465         switch (level) {
1466         case G_RAID_VOLUME_RL_RAID0:
1467                 if (qual != G_RAID_VOLUME_RLQ_NONE)
1468                         return (0);
1469                 if (disks < 1)
1470                         return (0);
1471                 if (!force && disks < 2)
1472                         return (0);
1473                 break;
1474         case G_RAID_VOLUME_RL_RAID1:
1475                 if (disks < 1)
1476                         return (0);
1477                 if (qual == G_RAID_VOLUME_RLQ_R1SM) {
1478                         if (!force && disks != 2)
1479                                 return (0);
1480                 } else if (qual == G_RAID_VOLUME_RLQ_R1MM) {
1481                         if (!force && disks != 3)
1482                                 return (0);
1483                 } else
1484                         return (0);
1485                 break;
1486         case G_RAID_VOLUME_RL_RAID3:
1487                 if (qual != G_RAID_VOLUME_RLQ_R3P0 &&
1488                     qual != G_RAID_VOLUME_RLQ_R3PN)
1489                         return (0);
1490                 if (disks < 3)
1491                         return (0);
1492                 break;
1493         case G_RAID_VOLUME_RL_RAID4:
1494                 if (qual != G_RAID_VOLUME_RLQ_R4P0 &&
1495                     qual != G_RAID_VOLUME_RLQ_R4PN)
1496                         return (0);
1497                 if (disks < 3)
1498                         return (0);
1499                 break;
1500         case G_RAID_VOLUME_RL_RAID5:
1501                 if (qual != G_RAID_VOLUME_RLQ_R5RA &&
1502                     qual != G_RAID_VOLUME_RLQ_R5RS &&
1503                     qual != G_RAID_VOLUME_RLQ_R5LA &&
1504                     qual != G_RAID_VOLUME_RLQ_R5LS)
1505                         return (0);
1506                 if (disks < 3)
1507                         return (0);
1508                 break;
1509         case G_RAID_VOLUME_RL_RAID6:
1510                 if (qual != G_RAID_VOLUME_RLQ_R6RA &&
1511                     qual != G_RAID_VOLUME_RLQ_R6RS &&
1512                     qual != G_RAID_VOLUME_RLQ_R6LA &&
1513                     qual != G_RAID_VOLUME_RLQ_R6LS)
1514                         return (0);
1515                 if (disks < 4)
1516                         return (0);
1517                 break;
1518         case G_RAID_VOLUME_RL_RAIDMDF:
1519                 if (qual != G_RAID_VOLUME_RLQ_RMDFRA &&
1520                     qual != G_RAID_VOLUME_RLQ_RMDFRS &&
1521                     qual != G_RAID_VOLUME_RLQ_RMDFLA &&
1522                     qual != G_RAID_VOLUME_RLQ_RMDFLS)
1523                         return (0);
1524                 if (disks < 4)
1525                         return (0);
1526                 break;
1527         case G_RAID_VOLUME_RL_RAID1E:
1528                 if (qual != G_RAID_VOLUME_RLQ_R1EA &&
1529                     qual != G_RAID_VOLUME_RLQ_R1EO)
1530                         return (0);
1531                 if (disks < 3)
1532                         return (0);
1533                 break;
1534         case G_RAID_VOLUME_RL_SINGLE:
1535                 if (qual != G_RAID_VOLUME_RLQ_NONE)
1536                         return (0);
1537                 if (disks != 1)
1538                         return (0);
1539                 break;
1540         case G_RAID_VOLUME_RL_CONCAT:
1541                 if (qual != G_RAID_VOLUME_RLQ_NONE)
1542                         return (0);
1543                 if (disks < 2)
1544                         return (0);
1545                 break;
1546         case G_RAID_VOLUME_RL_RAID5E:
1547                 if (qual != G_RAID_VOLUME_RLQ_R5ERA &&
1548                     qual != G_RAID_VOLUME_RLQ_R5ERS &&
1549                     qual != G_RAID_VOLUME_RLQ_R5ELA &&
1550                     qual != G_RAID_VOLUME_RLQ_R5ELS)
1551                         return (0);
1552                 if (disks < 4)
1553                         return (0);
1554                 break;
1555         case G_RAID_VOLUME_RL_RAID5EE:
1556                 if (qual != G_RAID_VOLUME_RLQ_R5EERA &&
1557                     qual != G_RAID_VOLUME_RLQ_R5EERS &&
1558                     qual != G_RAID_VOLUME_RLQ_R5EELA &&
1559                     qual != G_RAID_VOLUME_RLQ_R5EELS)
1560                         return (0);
1561                 if (disks < 4)
1562                         return (0);
1563                 break;
1564         case G_RAID_VOLUME_RL_RAID5R:
1565                 if (qual != G_RAID_VOLUME_RLQ_R5RRA &&
1566                     qual != G_RAID_VOLUME_RLQ_R5RRS &&
1567                     qual != G_RAID_VOLUME_RLQ_R5RLA &&
1568                     qual != G_RAID_VOLUME_RLQ_R5RLS)
1569                         return (0);
1570                 if (disks < 3)
1571                         return (0);
1572                 break;
1573         default:
1574                 return (0);
1575         }
1576         return (1);
1577 }
1578
1579 static int
1580 g_raid_md_ddf_start_disk(struct g_raid_disk *disk, struct g_raid_volume *vol)
1581 {
1582         struct g_raid_softc *sc;
1583         struct g_raid_subdisk *sd;
1584         struct g_raid_md_ddf_perdisk *pd;
1585         struct g_raid_md_ddf_pervolume *pv;
1586         struct g_raid_md_ddf_object *mdi;
1587         struct ddf_vol_meta *vmeta;
1588         struct ddf_meta *pdmeta, *gmeta;
1589         struct ddf_vdc_record *vdc1;
1590         struct ddf_sa_record *sa;
1591         off_t size, eoff = 0, esize = 0;
1592         uint64_t *val2;
1593         int disk_pos, md_disk_bvd = -1, md_disk_pos = -1, md_pde_pos;
1594         int i, resurrection = 0;
1595         uint32_t reference;
1596
1597         sc = disk->d_softc;
1598         mdi = (struct g_raid_md_ddf_object *)sc->sc_md;
1599         pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
1600         pdmeta = &pd->pd_meta;
1601         reference = GET32(&pd->pd_meta, pdd->PD_Reference);
1602
1603         pv = vol->v_md_data;
1604         vmeta = &pv->pv_meta;
1605         gmeta = &mdi->mdio_meta;
1606
1607         /* Find disk position in metadata by it's reference. */
1608         disk_pos = ddf_meta_find_disk(vmeta, reference,
1609             &md_disk_bvd, &md_disk_pos);
1610         md_pde_pos = ddf_meta_find_pd(gmeta, NULL, reference);
1611
1612         if (disk_pos < 0) {
1613                 G_RAID_DEBUG1(1, sc,
1614                     "Disk %s is not a present part of the volume %s",
1615                     g_raid_get_diskname(disk), vol->v_name);
1616
1617                 /* Failed stale disk is useless for us. */
1618                 if ((GET16(gmeta, pdr->entry[md_pde_pos].PD_State) & DDF_PDE_PFA) != 0) {
1619                         g_raid_change_disk_state(disk, G_RAID_DISK_S_STALE_FAILED);
1620                         return (0);
1621                 }
1622
1623                 /* If disk has some metadata for this volume - erase. */
1624                 if ((vdc1 = ddf_meta_find_vdc(pdmeta, vmeta->vdc->VD_GUID)) != NULL)
1625                         SET32D(pdmeta, vdc1->Signature, 0xffffffff);
1626
1627                 /* If we are in the start process, that's all for now. */
1628                 if (!pv->pv_started)
1629                         goto nofit;
1630                 /*
1631                  * If we have already started - try to get use of the disk.
1632                  * Try to replace OFFLINE disks first, then FAILED.
1633                  */
1634                 if (ddf_meta_count_vdc(&pd->pd_meta, NULL) >=
1635                         GET16(&pd->pd_meta, hdr->Max_Partitions)) {
1636                         G_RAID_DEBUG1(1, sc, "No free partitions on disk %s",
1637                             g_raid_get_diskname(disk));
1638                         goto nofit;
1639                 }
1640                 ddf_meta_unused_range(&pd->pd_meta, &eoff, &esize);
1641                 if (esize == 0) {
1642                         G_RAID_DEBUG1(1, sc, "No free space on disk %s",
1643                             g_raid_get_diskname(disk));
1644                         goto nofit;
1645                 }
1646                 eoff *= pd->pd_meta.sectorsize;
1647                 esize *= pd->pd_meta.sectorsize;
1648                 size = INT64_MAX;
1649                 for (i = 0; i < vol->v_disks_count; i++) {
1650                         sd = &vol->v_subdisks[i];
1651                         if (sd->sd_state != G_RAID_SUBDISK_S_NONE)
1652                                 size = sd->sd_size;
1653                         if (sd->sd_state <= G_RAID_SUBDISK_S_FAILED &&
1654                             (disk_pos < 0 ||
1655                              vol->v_subdisks[i].sd_state < sd->sd_state))
1656                                 disk_pos = i;
1657                 }
1658                 if (disk_pos >= 0 &&
1659                     vol->v_raid_level != G_RAID_VOLUME_RL_CONCAT &&
1660                     esize < size) {
1661                         G_RAID_DEBUG1(1, sc, "Disk %s free space "
1662                             "is too small (%ju < %ju)",
1663                             g_raid_get_diskname(disk), esize, size);
1664                         disk_pos = -1;
1665                 }
1666                 if (disk_pos >= 0) {
1667                         if (vol->v_raid_level != G_RAID_VOLUME_RL_CONCAT)
1668                                 esize = size;
1669                         md_disk_bvd = disk_pos / GET16(vmeta, vdc->Primary_Element_Count); // XXX
1670                         md_disk_pos = disk_pos % GET16(vmeta, vdc->Primary_Element_Count); // XXX
1671                 } else {
1672 nofit:
1673                         if (disk->d_state == G_RAID_DISK_S_NONE)
1674                                 g_raid_change_disk_state(disk,
1675                                     G_RAID_DISK_S_STALE);
1676                         return (0);
1677                 }
1678
1679                 /*
1680                  * If spare is committable, delete spare record.
1681                  * Othersize, mark it active and leave there.
1682                  */
1683                 sa = ddf_meta_find_sa(&pd->pd_meta, 0);
1684                 if (sa != NULL) {
1685                         if ((GET8D(&pd->pd_meta, sa->Spare_Type) &
1686                             DDF_SAR_TYPE_REVERTIBLE) == 0) {
1687                                 SET32D(&pd->pd_meta, sa->Signature, 0xffffffff);
1688                         } else {
1689                                 SET8D(&pd->pd_meta, sa->Spare_Type,
1690                                     GET8D(&pd->pd_meta, sa->Spare_Type) |
1691                                     DDF_SAR_TYPE_ACTIVE);
1692                         }
1693                 }
1694
1695                 G_RAID_DEBUG1(1, sc, "Disk %s takes pos %d in the volume %s",
1696                     g_raid_get_diskname(disk), disk_pos, vol->v_name);
1697                 resurrection = 1;
1698         }
1699
1700         sd = &vol->v_subdisks[disk_pos];
1701
1702         if (resurrection && sd->sd_disk != NULL) {
1703                 g_raid_change_disk_state(sd->sd_disk,
1704                     G_RAID_DISK_S_STALE_FAILED);
1705                 TAILQ_REMOVE(&sd->sd_disk->d_subdisks,
1706                     sd, sd_next);
1707         }
1708         vol->v_subdisks[disk_pos].sd_disk = disk;
1709         TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
1710
1711         /* Welcome the new disk. */
1712         if (resurrection)
1713                 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
1714         else if (GET8(gmeta, pdr->entry[md_pde_pos].PD_State) & DDF_PDE_PFA)
1715                 g_raid_change_disk_state(disk, G_RAID_DISK_S_FAILED);
1716         else
1717                 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
1718
1719         if (resurrection) {
1720                 sd->sd_offset = eoff;
1721                 sd->sd_size = esize;
1722         } else if (pdmeta->cr != NULL &&
1723             (vdc1 = ddf_meta_find_vdc(pdmeta, vmeta->vdc->VD_GUID)) != NULL) {
1724                 val2 = (uint64_t *)&(vdc1->Physical_Disk_Sequence[GET16(vmeta, hdr->Max_Primary_Element_Entries)]);
1725                 sd->sd_offset = (off_t)GET64P(pdmeta, val2 + md_disk_pos) * 512;
1726                 sd->sd_size = (off_t)GET64D(pdmeta, vdc1->Block_Count) * 512;
1727         }
1728
1729         if (resurrection) {
1730                 /* Stale disk, almost same as new. */
1731                 g_raid_change_subdisk_state(sd,
1732                     G_RAID_SUBDISK_S_NEW);
1733         } else if (GET8(gmeta, pdr->entry[md_pde_pos].PD_State) & DDF_PDE_PFA) {
1734                 /* Failed disk. */
1735                 g_raid_change_subdisk_state(sd,
1736                     G_RAID_SUBDISK_S_FAILED);
1737         } else if ((GET8(gmeta, pdr->entry[md_pde_pos].PD_State) &
1738              (DDF_PDE_FAILED | DDF_PDE_REBUILD)) != 0) {
1739                 /* Rebuilding disk. */
1740                 g_raid_change_subdisk_state(sd,
1741                     G_RAID_SUBDISK_S_REBUILD);
1742                 sd->sd_rebuild_pos = 0;
1743         } else if ((GET8(vmeta, vde->VD_State) & DDF_VDE_DIRTY) != 0 ||
1744             (GET8(vmeta, vde->Init_State) & DDF_VDE_INIT_MASK) !=
1745              DDF_VDE_INIT_FULL) {
1746                 /* Stale disk or dirty volume (unclean shutdown). */
1747                 g_raid_change_subdisk_state(sd,
1748                     G_RAID_SUBDISK_S_STALE);
1749         } else {
1750                 /* Up to date disk. */
1751                 g_raid_change_subdisk_state(sd,
1752                     G_RAID_SUBDISK_S_ACTIVE);
1753         }
1754         g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
1755             G_RAID_EVENT_SUBDISK);
1756
1757         return (resurrection);
1758 }
1759
1760 static void
1761 g_raid_md_ddf_refill(struct g_raid_softc *sc)
1762 {
1763         struct g_raid_volume *vol;
1764         struct g_raid_subdisk *sd;
1765         struct g_raid_disk *disk;
1766         struct g_raid_md_object *md;
1767         struct g_raid_md_ddf_perdisk *pd;
1768         struct g_raid_md_ddf_pervolume *pv;
1769         int update, updated, i, bad;
1770
1771         md = sc->sc_md;
1772 restart:
1773         updated = 0;
1774         TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
1775                 pv = vol->v_md_data;
1776                 if (!pv->pv_started || vol->v_stopping)
1777                         continue;
1778
1779                 /* Search for subdisk that needs replacement. */
1780                 bad = 0;
1781                 for (i = 0; i < vol->v_disks_count; i++) {
1782                         sd = &vol->v_subdisks[i];
1783                         if (sd->sd_state == G_RAID_SUBDISK_S_NONE ||
1784                             sd->sd_state == G_RAID_SUBDISK_S_FAILED)
1785                                 bad = 1;
1786                 }
1787                 if (!bad)
1788                         continue;
1789
1790                 G_RAID_DEBUG1(1, sc, "Volume %s is not complete, "
1791                     "trying to refill.", vol->v_name);
1792
1793                 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1794                         /* Skip failed. */
1795                         if (disk->d_state < G_RAID_DISK_S_SPARE)
1796                                 continue;
1797                         /* Skip already used by this volume. */
1798                         for (i = 0; i < vol->v_disks_count; i++) {
1799                                 sd = &vol->v_subdisks[i];
1800                                 if (sd->sd_disk == disk)
1801                                         break;
1802                         }
1803                         if (i < vol->v_disks_count)
1804                                 continue;
1805
1806                         /* Try to use disk if it has empty extents. */
1807                         pd = disk->d_md_data;
1808                         if (ddf_meta_count_vdc(&pd->pd_meta, NULL) <
1809                             GET16(&pd->pd_meta, hdr->Max_Partitions)) {
1810                                 update = g_raid_md_ddf_start_disk(disk, vol);
1811                         } else
1812                                 update = 0;
1813                         if (update) {
1814                                 updated = 1;
1815                                 g_raid_md_write_ddf(md, vol, NULL, disk);
1816                                 break;
1817                         }
1818                 }
1819         }
1820         if (updated)
1821                 goto restart;
1822 }
1823
1824 static void
1825 g_raid_md_ddf_start(struct g_raid_volume *vol)
1826 {
1827         struct g_raid_softc *sc;
1828         struct g_raid_subdisk *sd;
1829         struct g_raid_disk *disk;
1830         struct g_raid_md_object *md;
1831         struct g_raid_md_ddf_perdisk *pd;
1832         struct g_raid_md_ddf_pervolume *pv;
1833         struct g_raid_md_ddf_object *mdi;
1834         struct ddf_vol_meta *vmeta;
1835         struct ddf_vdc_record *vdc;
1836         uint64_t *val2;
1837         int i, j, bvd;
1838
1839         sc = vol->v_softc;
1840         md = sc->sc_md;
1841         mdi = (struct g_raid_md_ddf_object *)md;
1842         pv = vol->v_md_data;
1843         vmeta = &pv->pv_meta;
1844         vdc = vmeta->vdc;
1845
1846         vol->v_raid_level = GET8(vmeta, vdc->Primary_RAID_Level);
1847         vol->v_raid_level_qualifier = GET8(vmeta, vdc->RLQ);
1848         if (GET8(vmeta, vdc->Secondary_Element_Count) > 1 &&
1849             vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 &&
1850             GET8(vmeta, vdc->Secondary_RAID_Level) == 0)
1851                 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1E;
1852         vol->v_sectorsize = GET16(vmeta, vdc->Block_Size);
1853         if (vol->v_sectorsize == 0xffff)
1854                 vol->v_sectorsize = vmeta->sectorsize;
1855         vol->v_strip_size = vol->v_sectorsize << GET8(vmeta, vdc->Stripe_Size);
1856         vol->v_disks_count = GET16(vmeta, vdc->Primary_Element_Count) *
1857             GET8(vmeta, vdc->Secondary_Element_Count);
1858         vol->v_mdf_pdisks = GET8(vmeta, vdc->MDF_Parity_Disks);
1859         vol->v_mdf_polynomial = GET16(vmeta, vdc->MDF_Parity_Generator_Polynomial);
1860         vol->v_mdf_method = GET8(vmeta, vdc->MDF_Constant_Generation_Method);
1861         if (GET8(vmeta, vdc->Rotate_Parity_count) > 31)
1862                 vol->v_rotate_parity = 1;
1863         else
1864                 vol->v_rotate_parity = 1 << GET8(vmeta, vdc->Rotate_Parity_count);
1865         vol->v_mediasize = GET64(vmeta, vdc->VD_Size) * vol->v_sectorsize;
1866         for (i = 0, j = 0, bvd = 0; i < vol->v_disks_count; i++, j++) {
1867                 if (j == GET16(vmeta, vdc->Primary_Element_Count)) {
1868                         j = 0;
1869                         bvd++;
1870                 }
1871                 sd = &vol->v_subdisks[i];
1872                 if (vmeta->bvdc[bvd] == NULL) {
1873                         sd->sd_offset = 0;
1874                         sd->sd_size = GET64(vmeta, vdc->Block_Count) *
1875                             vol->v_sectorsize;
1876                         continue;
1877                 }
1878                 val2 = (uint64_t *)&(vmeta->bvdc[bvd]->Physical_Disk_Sequence[
1879                     GET16(vmeta, hdr->Max_Primary_Element_Entries)]);
1880                 sd->sd_offset = GET64P(vmeta, val2 + j) * vol->v_sectorsize;
1881                 sd->sd_size = GET64(vmeta, bvdc[bvd]->Block_Count) *
1882                     vol->v_sectorsize;
1883         }
1884         g_raid_start_volume(vol);
1885
1886         /* Make all disks found till the moment take their places. */
1887         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1888                 pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
1889                 if (ddf_meta_find_vdc(&pd->pd_meta, vmeta->vdc->VD_GUID) != NULL)
1890                         g_raid_md_ddf_start_disk(disk, vol);
1891         }
1892
1893         pv->pv_started = 1;
1894         mdi->mdio_starting--;
1895         callout_stop(&pv->pv_start_co);
1896         G_RAID_DEBUG1(0, sc, "Volume started.");
1897         g_raid_md_write_ddf(md, vol, NULL, NULL);
1898
1899         /* Pickup any STALE/SPARE disks to refill array if needed. */
1900         g_raid_md_ddf_refill(sc);
1901
1902         g_raid_event_send(vol, G_RAID_VOLUME_E_START, G_RAID_EVENT_VOLUME);
1903 }
1904
1905 static void
1906 g_raid_ddf_go(void *arg)
1907 {
1908         struct g_raid_volume *vol;
1909         struct g_raid_softc *sc;
1910         struct g_raid_md_ddf_pervolume *pv;
1911
1912         vol = arg;
1913         pv = vol->v_md_data;
1914         sc = vol->v_softc;
1915         if (!pv->pv_started) {
1916                 G_RAID_DEBUG1(0, sc, "Force volume start due to timeout.");
1917                 g_raid_event_send(vol, G_RAID_VOLUME_E_STARTMD,
1918                     G_RAID_EVENT_VOLUME);
1919         }
1920 }
1921
1922 static void
1923 g_raid_md_ddf_new_disk(struct g_raid_disk *disk)
1924 {
1925         struct g_raid_softc *sc;
1926         struct g_raid_md_object *md;
1927         struct g_raid_md_ddf_perdisk *pd;
1928         struct g_raid_md_ddf_pervolume *pv;
1929         struct g_raid_md_ddf_object *mdi;
1930         struct g_raid_volume *vol;
1931         struct ddf_meta *pdmeta;
1932         struct ddf_vol_meta *vmeta;
1933         struct ddf_vdc_record *vdc;
1934         struct ddf_vd_entry *vde;
1935         int i, j, k, num, have, need, cnt, spare;
1936         uint32_t val;
1937         char buf[17];
1938
1939         sc = disk->d_softc;
1940         md = sc->sc_md;
1941         mdi = (struct g_raid_md_ddf_object *)md;
1942         pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
1943         pdmeta = &pd->pd_meta;
1944         spare = -1;
1945
1946         if (mdi->mdio_meta.hdr == NULL)
1947                 ddf_meta_copy(&mdi->mdio_meta, pdmeta);
1948         else
1949                 ddf_meta_update(&mdi->mdio_meta, pdmeta);
1950
1951         num = GETCRNUM(pdmeta);
1952         for (j = 0; j < num; j++) {
1953                 vdc = GETVDCPTR(pdmeta, j);
1954                 val = GET32D(pdmeta, vdc->Signature);
1955
1956                 if (val == DDF_SA_SIGNATURE && spare == -1)
1957                         spare = 1;
1958
1959                 if (val != DDF_VDCR_SIGNATURE)
1960                         continue;
1961                 spare = 0;
1962                 k = ddf_meta_find_vd(pdmeta, vdc->VD_GUID);
1963                 if (k < 0)
1964                         continue;
1965                 vde = &pdmeta->vdr->entry[k];
1966
1967                 /* Look for volume with matching ID. */
1968                 vol = g_raid_md_ddf_get_volume(sc, vdc->VD_GUID);
1969                 if (vol == NULL) {
1970                         ddf_meta_get_name(pdmeta, k, buf);
1971                         vol = g_raid_create_volume(sc, buf,
1972                             GET16D(pdmeta, vde->VD_Number));
1973                         pv = malloc(sizeof(*pv), M_MD_DDF, M_WAITOK | M_ZERO);
1974                         vol->v_md_data = pv;
1975                         callout_init(&pv->pv_start_co, 1);
1976                         callout_reset(&pv->pv_start_co,
1977                             g_raid_start_timeout * hz,
1978                             g_raid_ddf_go, vol);
1979                         mdi->mdio_starting++;
1980                 } else
1981                         pv = vol->v_md_data;
1982
1983                 /* If we haven't started yet - check metadata freshness. */
1984                 vmeta = &pv->pv_meta;
1985                 ddf_vol_meta_update(vmeta, pdmeta, vdc->VD_GUID, pv->pv_started);
1986         }
1987
1988         if (spare == 1) {
1989                 g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE);
1990                 g_raid_md_ddf_refill(sc);
1991         }
1992
1993         TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
1994                 pv = vol->v_md_data;
1995                 vmeta = &pv->pv_meta;
1996
1997                 if (ddf_meta_find_vdc(pdmeta, vmeta->vdc->VD_GUID) == NULL)
1998                         continue;
1999
2000                 if (pv->pv_started) {
2001                         if (g_raid_md_ddf_start_disk(disk, vol))
2002                                 g_raid_md_write_ddf(md, vol, NULL, NULL);
2003                         continue;
2004                 }
2005
2006                 /* If we collected all needed disks - start array. */
2007                 need = 0;
2008                 have = 0;
2009                 for (k = 0; k < GET8(vmeta, vdc->Secondary_Element_Count); k++) {
2010                         if (vmeta->bvdc[k] == NULL) {
2011                                 need += GET16(vmeta, vdc->Primary_Element_Count);
2012                                 continue;
2013                         }
2014                         cnt = GET16(vmeta, bvdc[k]->Primary_Element_Count);
2015                         need += cnt;
2016                         for (i = 0; i < cnt; i++) {
2017                                 val = GET32(vmeta, bvdc[k]->Physical_Disk_Sequence[i]);
2018                                 if (g_raid_md_ddf_get_disk(sc, NULL, val) != NULL)
2019                                         have++;
2020                         }
2021                 }
2022                 G_RAID_DEBUG1(1, sc, "Volume %s now has %d of %d disks",
2023                     vol->v_name, have, need);
2024                 if (have == need)
2025                         g_raid_md_ddf_start(vol);
2026         }
2027 }
2028
2029 static int
2030 g_raid_md_create_req_ddf(struct g_raid_md_object *md, struct g_class *mp,
2031     struct gctl_req *req, struct g_geom **gp)
2032 {
2033         struct g_geom *geom;
2034         struct g_raid_softc *sc;
2035         struct g_raid_md_ddf_object *mdi, *mdi1;
2036         char name[16];
2037         const char *fmtopt;
2038         int be = 1;
2039
2040         mdi = (struct g_raid_md_ddf_object *)md;
2041         fmtopt = gctl_get_asciiparam(req, "fmtopt");
2042         if (fmtopt == NULL || strcasecmp(fmtopt, "BE") == 0)
2043                 be = 1;
2044         else if (strcasecmp(fmtopt, "LE") == 0)
2045                 be = 0;
2046         else {
2047                 gctl_error(req, "Incorrect fmtopt argument.");
2048                 return (G_RAID_MD_TASTE_FAIL);
2049         }
2050
2051         /* Search for existing node. */
2052         LIST_FOREACH(geom, &mp->geom, geom) {
2053                 sc = geom->softc;
2054                 if (sc == NULL)
2055                         continue;
2056                 if (sc->sc_stopping != 0)
2057                         continue;
2058                 if (sc->sc_md->mdo_class != md->mdo_class)
2059                         continue;
2060                 mdi1 = (struct g_raid_md_ddf_object *)sc->sc_md;
2061                 if (mdi1->mdio_bigendian != be)
2062                         continue;
2063                 break;
2064         }
2065         if (geom != NULL) {
2066                 *gp = geom;
2067                 return (G_RAID_MD_TASTE_EXISTING);
2068         }
2069
2070         /* Create new one if not found. */
2071         mdi->mdio_bigendian = be;
2072         snprintf(name, sizeof(name), "DDF%s", be ? "" : "-LE");
2073         sc = g_raid_create_node(mp, name, md);
2074         if (sc == NULL)
2075                 return (G_RAID_MD_TASTE_FAIL);
2076         md->mdo_softc = sc;
2077         *gp = sc->sc_geom;
2078         return (G_RAID_MD_TASTE_NEW);
2079 }
2080
2081 static int
2082 g_raid_md_taste_ddf(struct g_raid_md_object *md, struct g_class *mp,
2083                               struct g_consumer *cp, struct g_geom **gp)
2084 {
2085         struct g_consumer *rcp;
2086         struct g_provider *pp;
2087         struct g_raid_softc *sc;
2088         struct g_raid_disk *disk;
2089         struct ddf_meta meta;
2090         struct g_raid_md_ddf_perdisk *pd;
2091         struct g_raid_md_ddf_object *mdi;
2092         struct g_geom *geom;
2093         int error, result, be;
2094         char name[16];
2095
2096         G_RAID_DEBUG(1, "Tasting DDF on %s", cp->provider->name);
2097         mdi = (struct g_raid_md_ddf_object *)md;
2098         pp = cp->provider;
2099
2100         /* Read metadata from device. */
2101         if (g_access(cp, 1, 0, 0) != 0)
2102                 return (G_RAID_MD_TASTE_FAIL);
2103         g_topology_unlock();
2104         bzero(&meta, sizeof(meta));
2105         error = ddf_meta_read(cp, &meta);
2106         g_topology_lock();
2107         g_access(cp, -1, 0, 0);
2108         if (error != 0)
2109                 return (G_RAID_MD_TASTE_FAIL);
2110         be = meta.bigendian;
2111
2112         /* Metadata valid. Print it. */
2113         g_raid_md_ddf_print(&meta);
2114
2115         /* Search for matching node. */
2116         sc = NULL;
2117         LIST_FOREACH(geom, &mp->geom, geom) {
2118                 sc = geom->softc;
2119                 if (sc == NULL)
2120                         continue;
2121                 if (sc->sc_stopping != 0)
2122                         continue;
2123                 if (sc->sc_md->mdo_class != md->mdo_class)
2124                         continue;
2125                 mdi = (struct g_raid_md_ddf_object *)sc->sc_md;
2126                 if (mdi->mdio_bigendian != be)
2127                         continue;
2128                 break;
2129         }
2130
2131         /* Found matching node. */
2132         if (geom != NULL) {
2133                 G_RAID_DEBUG(1, "Found matching array %s", sc->sc_name);
2134                 result = G_RAID_MD_TASTE_EXISTING;
2135
2136         } else { /* Not found matching node -- create one. */
2137                 result = G_RAID_MD_TASTE_NEW;
2138                 mdi->mdio_bigendian = be;
2139                 snprintf(name, sizeof(name), "DDF%s", be ? "" : "-LE");
2140                 sc = g_raid_create_node(mp, name, md);
2141                 md->mdo_softc = sc;
2142                 geom = sc->sc_geom;
2143         }
2144
2145         rcp = g_new_consumer(geom);
2146         g_attach(rcp, pp);
2147         if (g_access(rcp, 1, 1, 1) != 0)
2148                 ; //goto fail1;
2149
2150         g_topology_unlock();
2151         sx_xlock(&sc->sc_lock);
2152
2153         pd = malloc(sizeof(*pd), M_MD_DDF, M_WAITOK | M_ZERO);
2154         pd->pd_meta = meta;
2155         disk = g_raid_create_disk(sc);
2156         disk->d_md_data = (void *)pd;
2157         disk->d_consumer = rcp;
2158         rcp->private = disk;
2159
2160         g_raid_get_disk_info(disk);
2161
2162         g_raid_md_ddf_new_disk(disk);
2163
2164         sx_xunlock(&sc->sc_lock);
2165         g_topology_lock();
2166         *gp = geom;
2167         return (result);
2168 }
2169
2170 static int
2171 g_raid_md_event_ddf(struct g_raid_md_object *md,
2172     struct g_raid_disk *disk, u_int event)
2173 {
2174         struct g_raid_softc *sc;
2175
2176         sc = md->mdo_softc;
2177         if (disk == NULL)
2178                 return (-1);
2179         switch (event) {
2180         case G_RAID_DISK_E_DISCONNECTED:
2181                 /* Delete disk. */
2182                 g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE);
2183                 g_raid_destroy_disk(disk);
2184                 g_raid_md_ddf_purge_volumes(sc);
2185
2186                 /* Write updated metadata to all disks. */
2187                 g_raid_md_write_ddf(md, NULL, NULL, NULL);
2188
2189                 /* Check if anything left. */
2190                 if (g_raid_ndisks(sc, -1) == 0)
2191                         g_raid_destroy_node(sc, 0);
2192                 else
2193                         g_raid_md_ddf_refill(sc);
2194                 return (0);
2195         }
2196         return (-2);
2197 }
2198
2199 static int
2200 g_raid_md_volume_event_ddf(struct g_raid_md_object *md,
2201     struct g_raid_volume *vol, u_int event)
2202 {
2203         struct g_raid_md_ddf_pervolume *pv;
2204
2205         pv = (struct g_raid_md_ddf_pervolume *)vol->v_md_data;
2206         switch (event) {
2207         case G_RAID_VOLUME_E_STARTMD:
2208                 if (!pv->pv_started)
2209                         g_raid_md_ddf_start(vol);
2210                 return (0);
2211         }
2212         return (-2);
2213 }
2214
2215 static int
2216 g_raid_md_ctl_ddf(struct g_raid_md_object *md,
2217     struct gctl_req *req)
2218 {
2219         struct g_raid_softc *sc;
2220         struct g_raid_volume *vol, *vol1;
2221         struct g_raid_subdisk *sd;
2222         struct g_raid_disk *disk, *disks[DDF_MAX_DISKS_HARD];
2223         struct g_raid_md_ddf_perdisk *pd;
2224         struct g_raid_md_ddf_pervolume *pv;
2225         struct g_raid_md_ddf_object *mdi;
2226         struct ddf_sa_record *sa;
2227         struct g_consumer *cp;
2228         struct g_provider *pp;
2229         char arg[16];
2230         const char *nodename, *verb, *volname, *levelname, *diskname;
2231         char *tmp;
2232         int *nargs, *force;
2233         off_t size, sectorsize, strip, offs[DDF_MAX_DISKS_HARD], esize;
2234         intmax_t *sizearg, *striparg;
2235         int i, numdisks, len, level, qual;
2236         int error;
2237
2238         sc = md->mdo_softc;
2239         mdi = (struct g_raid_md_ddf_object *)md;
2240         verb = gctl_get_param(req, "verb", NULL);
2241         nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
2242         error = 0;
2243
2244         if (strcmp(verb, "label") == 0) {
2245
2246                 if (*nargs < 4) {
2247                         gctl_error(req, "Invalid number of arguments.");
2248                         return (-1);
2249                 }
2250                 volname = gctl_get_asciiparam(req, "arg1");
2251                 if (volname == NULL) {
2252                         gctl_error(req, "No volume name.");
2253                         return (-2);
2254                 }
2255                 levelname = gctl_get_asciiparam(req, "arg2");
2256                 if (levelname == NULL) {
2257                         gctl_error(req, "No RAID level.");
2258                         return (-3);
2259                 }
2260                 if (g_raid_volume_str2level(levelname, &level, &qual)) {
2261                         gctl_error(req, "Unknown RAID level '%s'.", levelname);
2262                         return (-4);
2263                 }
2264                 numdisks = *nargs - 3;
2265                 force = gctl_get_paraml(req, "force", sizeof(*force));
2266                 if (!g_raid_md_ddf_supported(level, qual, numdisks,
2267                     force ? *force : 0)) {
2268                         gctl_error(req, "Unsupported RAID level "
2269                             "(0x%02x/0x%02x), or number of disks (%d).",
2270                             level, qual, numdisks);
2271                         return (-5);
2272                 }
2273
2274                 /* Search for disks, connect them and probe. */
2275                 size = INT64_MAX;
2276                 sectorsize = 0;
2277                 bzero(disks, sizeof(disks));
2278                 bzero(offs, sizeof(offs));
2279                 for (i = 0; i < numdisks; i++) {
2280                         snprintf(arg, sizeof(arg), "arg%d", i + 3);
2281                         diskname = gctl_get_asciiparam(req, arg);
2282                         if (diskname == NULL) {
2283                                 gctl_error(req, "No disk name (%s).", arg);
2284                                 error = -6;
2285                                 break;
2286                         }
2287                         if (strcmp(diskname, "NONE") == 0)
2288                                 continue;
2289
2290                         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
2291                                 if (disk->d_consumer != NULL &&
2292                                     disk->d_consumer->provider != NULL &&
2293                                     strcmp(disk->d_consumer->provider->name,
2294                                      diskname) == 0)
2295                                         break;
2296                         }
2297                         if (disk != NULL) {
2298                                 if (disk->d_state != G_RAID_DISK_S_ACTIVE) {
2299                                         gctl_error(req, "Disk '%s' is in a "
2300                                             "wrong state (%s).", diskname,
2301                                             g_raid_disk_state2str(disk->d_state));
2302                                         error = -7;
2303                                         break;
2304                                 }
2305                                 pd = disk->d_md_data;
2306                                 if (ddf_meta_count_vdc(&pd->pd_meta, NULL) >=
2307                                     GET16(&pd->pd_meta, hdr->Max_Partitions)) {
2308                                         gctl_error(req, "No free partitions "
2309                                             "on disk '%s'.",
2310                                             diskname);
2311                                         error = -7;
2312                                         break;
2313                                 }
2314                                 pp = disk->d_consumer->provider;
2315                                 disks[i] = disk;
2316                                 ddf_meta_unused_range(&pd->pd_meta,
2317                                     &offs[i], &esize);
2318                                 offs[i] *= pp->sectorsize;
2319                                 size = MIN(size, (off_t)esize * pp->sectorsize);
2320                                 sectorsize = MAX(sectorsize, pp->sectorsize);
2321                                 continue;
2322                         }
2323
2324                         g_topology_lock();
2325                         cp = g_raid_open_consumer(sc, diskname);
2326                         if (cp == NULL) {
2327                                 gctl_error(req, "Can't open disk '%s'.",
2328                                     diskname);
2329                                 g_topology_unlock();
2330                                 error = -8;
2331                                 break;
2332                         }
2333                         pp = cp->provider;
2334                         pd = malloc(sizeof(*pd), M_MD_DDF, M_WAITOK | M_ZERO);
2335                         disk = g_raid_create_disk(sc);
2336                         disk->d_md_data = (void *)pd;
2337                         disk->d_consumer = cp;
2338                         disks[i] = disk;
2339                         cp->private = disk;
2340                         ddf_meta_create(disk, &mdi->mdio_meta);
2341                         if (mdi->mdio_meta.hdr == NULL)
2342                                 ddf_meta_copy(&mdi->mdio_meta, &pd->pd_meta);
2343                         else
2344                                 ddf_meta_update(&mdi->mdio_meta, &pd->pd_meta);
2345                         g_topology_unlock();
2346
2347                         g_raid_get_disk_info(disk);
2348
2349                         /* Reserve some space for metadata. */
2350                         size = MIN(size, GET64(&pd->pd_meta,
2351                             pdr->entry[0].Configured_Size) * pp->sectorsize);
2352                         sectorsize = MAX(sectorsize, pp->sectorsize);
2353                 }
2354                 if (error != 0) {
2355                         for (i = 0; i < numdisks; i++) {
2356                                 if (disks[i] != NULL &&
2357                                     disks[i]->d_state == G_RAID_DISK_S_NONE)
2358                                         g_raid_destroy_disk(disks[i]);
2359                         }
2360                         return (error);
2361                 }
2362
2363                 if (sectorsize <= 0) {
2364                         gctl_error(req, "Can't get sector size.");
2365                         return (-8);
2366                 }
2367
2368                 /* Handle size argument. */
2369                 len = sizeof(*sizearg);
2370                 sizearg = gctl_get_param(req, "size", &len);
2371                 if (sizearg != NULL && len == sizeof(*sizearg) &&
2372                     *sizearg > 0) {
2373                         if (*sizearg > size) {
2374                                 gctl_error(req, "Size too big %lld > %lld.",
2375                                     (long long)*sizearg, (long long)size);
2376                                 return (-9);
2377                         }
2378                         size = *sizearg;
2379                 }
2380
2381                 /* Handle strip argument. */
2382                 strip = 131072;
2383                 len = sizeof(*striparg);
2384                 striparg = gctl_get_param(req, "strip", &len);
2385                 if (striparg != NULL && len == sizeof(*striparg) &&
2386                     *striparg > 0) {
2387                         if (*striparg < sectorsize) {
2388                                 gctl_error(req, "Strip size too small.");
2389                                 return (-10);
2390                         }
2391                         if (*striparg % sectorsize != 0) {
2392                                 gctl_error(req, "Incorrect strip size.");
2393                                 return (-11);
2394                         }
2395                         strip = *striparg;
2396                 }
2397
2398                 /* Round size down to strip or sector. */
2399                 if (level == G_RAID_VOLUME_RL_RAID1 ||
2400                     level == G_RAID_VOLUME_RL_RAID3 ||
2401                     level == G_RAID_VOLUME_RL_SINGLE ||
2402                     level == G_RAID_VOLUME_RL_CONCAT)
2403                         size -= (size % sectorsize);
2404                 else if (level == G_RAID_VOLUME_RL_RAID1E &&
2405                     (numdisks & 1) != 0)
2406                         size -= (size % (2 * strip));
2407                 else
2408                         size -= (size % strip);
2409                 if (size <= 0) {
2410                         gctl_error(req, "Size too small.");
2411                         return (-13);
2412                 }
2413
2414                 /* We have all we need, create things: volume, ... */
2415                 pv = malloc(sizeof(*pv), M_MD_DDF, M_WAITOK | M_ZERO);
2416                 ddf_vol_meta_create(&pv->pv_meta, &mdi->mdio_meta);
2417                 pv->pv_started = 1;
2418                 vol = g_raid_create_volume(sc, volname, -1);
2419                 vol->v_md_data = pv;
2420                 vol->v_raid_level = level;
2421                 vol->v_raid_level_qualifier = qual;
2422                 vol->v_strip_size = strip;
2423                 vol->v_disks_count = numdisks;
2424                 if (level == G_RAID_VOLUME_RL_RAID0 ||
2425                     level == G_RAID_VOLUME_RL_CONCAT ||
2426                     level == G_RAID_VOLUME_RL_SINGLE)
2427                         vol->v_mediasize = size * numdisks;
2428                 else if (level == G_RAID_VOLUME_RL_RAID1)
2429                         vol->v_mediasize = size;
2430                 else if (level == G_RAID_VOLUME_RL_RAID3 ||
2431                     level == G_RAID_VOLUME_RL_RAID4 ||
2432                     level == G_RAID_VOLUME_RL_RAID5)
2433                         vol->v_mediasize = size * (numdisks - 1);
2434                 else if (level == G_RAID_VOLUME_RL_RAID5R) {
2435                         vol->v_mediasize = size * (numdisks - 1);
2436                         vol->v_rotate_parity = 1024;
2437                 } else if (level == G_RAID_VOLUME_RL_RAID6 ||
2438                     level == G_RAID_VOLUME_RL_RAID5E ||
2439                     level == G_RAID_VOLUME_RL_RAID5EE)
2440                         vol->v_mediasize = size * (numdisks - 2);
2441                 else if (level == G_RAID_VOLUME_RL_RAIDMDF) {
2442                         if (numdisks < 5)
2443                                 vol->v_mdf_pdisks = 2;
2444                         else
2445                                 vol->v_mdf_pdisks = 3;
2446                         vol->v_mdf_polynomial = 0x11d;
2447                         vol->v_mdf_method = 0x00;
2448                         vol->v_mediasize = size * (numdisks - vol->v_mdf_pdisks);
2449                 } else { /* RAID1E */
2450                         vol->v_mediasize = ((size * numdisks) / strip / 2) *
2451                             strip;
2452                 }
2453                 vol->v_sectorsize = sectorsize;
2454                 g_raid_start_volume(vol);
2455
2456                 /* , and subdisks. */
2457                 for (i = 0; i < numdisks; i++) {
2458                         disk = disks[i];
2459                         sd = &vol->v_subdisks[i];
2460                         sd->sd_disk = disk;
2461                         sd->sd_offset = offs[i];
2462                         sd->sd_size = size;
2463                         if (disk == NULL)
2464                                 continue;
2465                         TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
2466                         g_raid_change_disk_state(disk,
2467                             G_RAID_DISK_S_ACTIVE);
2468                         g_raid_change_subdisk_state(sd,
2469                             G_RAID_SUBDISK_S_ACTIVE);
2470                         g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
2471                             G_RAID_EVENT_SUBDISK);
2472                 }
2473
2474                 /* Write metadata based on created entities. */
2475                 G_RAID_DEBUG1(0, sc, "Array started.");
2476                 g_raid_md_write_ddf(md, vol, NULL, NULL);
2477
2478                 /* Pickup any STALE/SPARE disks to refill array if needed. */
2479                 g_raid_md_ddf_refill(sc);
2480
2481                 g_raid_event_send(vol, G_RAID_VOLUME_E_START,
2482                     G_RAID_EVENT_VOLUME);
2483                 return (0);
2484         }
2485         if (strcmp(verb, "add") == 0) {
2486
2487                 gctl_error(req, "`add` command is not applicable, "
2488                     "use `label` instead.");
2489                 return (-99);
2490         }
2491         if (strcmp(verb, "delete") == 0) {
2492
2493                 nodename = gctl_get_asciiparam(req, "arg0");
2494                 if (nodename != NULL && strcasecmp(sc->sc_name, nodename) != 0)
2495                         nodename = NULL;
2496
2497                 /* Full node destruction. */
2498                 if (*nargs == 1 && nodename != NULL) {
2499                         /* Check if some volume is still open. */
2500                         force = gctl_get_paraml(req, "force", sizeof(*force));
2501                         if (force != NULL && *force == 0 &&
2502                             g_raid_nopens(sc) != 0) {
2503                                 gctl_error(req, "Some volume is still open.");
2504                                 return (-4);
2505                         }
2506
2507                         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
2508                                 if (disk->d_consumer)
2509                                         ddf_meta_erase(disk->d_consumer);
2510                         }
2511                         g_raid_destroy_node(sc, 0);
2512                         return (0);
2513                 }
2514
2515                 /* Destroy specified volume. If it was last - all node. */
2516                 if (*nargs > 2) {
2517                         gctl_error(req, "Invalid number of arguments.");
2518                         return (-1);
2519                 }
2520                 volname = gctl_get_asciiparam(req,
2521                     nodename != NULL ? "arg1" : "arg0");
2522                 if (volname == NULL) {
2523                         gctl_error(req, "No volume name.");
2524                         return (-2);
2525                 }
2526
2527                 /* Search for volume. */
2528                 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
2529                         if (strcmp(vol->v_name, volname) == 0)
2530                                 break;
2531                         pp = vol->v_provider;
2532                         if (pp == NULL)
2533                                 continue;
2534                         if (strcmp(pp->name, volname) == 0)
2535                                 break;
2536                         if (strncmp(pp->name, "raid/", 5) == 0 &&
2537                             strcmp(pp->name + 5, volname) == 0)
2538                                 break;
2539                 }
2540                 if (vol == NULL) {
2541                         i = strtol(volname, &tmp, 10);
2542                         if (verb != volname && tmp[0] == 0) {
2543                                 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
2544                                         if (vol->v_global_id == i)
2545                                                 break;
2546                                 }
2547                         }
2548                 }
2549                 if (vol == NULL) {
2550                         gctl_error(req, "Volume '%s' not found.", volname);
2551                         return (-3);
2552                 }
2553
2554                 /* Check if volume is still open. */
2555                 force = gctl_get_paraml(req, "force", sizeof(*force));
2556                 if (force != NULL && *force == 0 &&
2557                     vol->v_provider_open != 0) {
2558                         gctl_error(req, "Volume is still open.");
2559                         return (-4);
2560                 }
2561
2562                 /* Destroy volume and potentially node. */
2563                 i = 0;
2564                 TAILQ_FOREACH(vol1, &sc->sc_volumes, v_next)
2565                         i++;
2566                 if (i >= 2) {
2567                         g_raid_destroy_volume(vol);
2568                         g_raid_md_ddf_purge_disks(sc);
2569                         g_raid_md_write_ddf(md, NULL, NULL, NULL);
2570                 } else {
2571                         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
2572                                 if (disk->d_consumer)
2573                                         ddf_meta_erase(disk->d_consumer);
2574                         }
2575                         g_raid_destroy_node(sc, 0);
2576                 }
2577                 return (0);
2578         }
2579         if (strcmp(verb, "remove") == 0 ||
2580             strcmp(verb, "fail") == 0) {
2581                 if (*nargs < 2) {
2582                         gctl_error(req, "Invalid number of arguments.");
2583                         return (-1);
2584                 }
2585                 for (i = 1; i < *nargs; i++) {
2586                         snprintf(arg, sizeof(arg), "arg%d", i);
2587                         diskname = gctl_get_asciiparam(req, arg);
2588                         if (diskname == NULL) {
2589                                 gctl_error(req, "No disk name (%s).", arg);
2590                                 error = -2;
2591                                 break;
2592                         }
2593                         if (strncmp(diskname, "/dev/", 5) == 0)
2594                                 diskname += 5;
2595
2596                         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
2597                                 if (disk->d_consumer != NULL &&
2598                                     disk->d_consumer->provider != NULL &&
2599                                     strcmp(disk->d_consumer->provider->name,
2600                                      diskname) == 0)
2601                                         break;
2602                         }
2603                         if (disk == NULL) {
2604                                 gctl_error(req, "Disk '%s' not found.",
2605                                     diskname);
2606                                 error = -3;
2607                                 break;
2608                         }
2609
2610                         if (strcmp(verb, "fail") == 0) {
2611                                 g_raid_md_fail_disk_ddf(md, NULL, disk);
2612                                 continue;
2613                         }
2614
2615                         /* Erase metadata on deleting disk and destroy it. */
2616                         ddf_meta_erase(disk->d_consumer);
2617                         g_raid_destroy_disk(disk);
2618                 }
2619                 g_raid_md_ddf_purge_volumes(sc);
2620
2621                 /* Write updated metadata to remaining disks. */
2622                 g_raid_md_write_ddf(md, NULL, NULL, NULL);
2623
2624                 /* Check if anything left. */
2625                 if (g_raid_ndisks(sc, -1) == 0)
2626                         g_raid_destroy_node(sc, 0);
2627                 else
2628                         g_raid_md_ddf_refill(sc);
2629                 return (error);
2630         }
2631         if (strcmp(verb, "insert") == 0) {
2632                 if (*nargs < 2) {
2633                         gctl_error(req, "Invalid number of arguments.");
2634                         return (-1);
2635                 }
2636                 for (i = 1; i < *nargs; i++) {
2637                         /* Get disk name. */
2638                         snprintf(arg, sizeof(arg), "arg%d", i);
2639                         diskname = gctl_get_asciiparam(req, arg);
2640                         if (diskname == NULL) {
2641                                 gctl_error(req, "No disk name (%s).", arg);
2642                                 error = -3;
2643                                 break;
2644                         }
2645
2646                         /* Try to find provider with specified name. */
2647                         g_topology_lock();
2648                         cp = g_raid_open_consumer(sc, diskname);
2649                         if (cp == NULL) {
2650                                 gctl_error(req, "Can't open disk '%s'.",
2651                                     diskname);
2652                                 g_topology_unlock();
2653                                 error = -4;
2654                                 break;
2655                         }
2656                         pp = cp->provider;
2657                         g_topology_unlock();
2658
2659                         pd = malloc(sizeof(*pd), M_MD_DDF, M_WAITOK | M_ZERO);
2660
2661                         disk = g_raid_create_disk(sc);
2662                         disk->d_consumer = cp;
2663                         disk->d_md_data = (void *)pd;
2664                         cp->private = disk;
2665
2666                         g_raid_get_disk_info(disk);
2667
2668                         /* Welcome the "new" disk. */
2669                         g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE);
2670                         ddf_meta_create(disk, &mdi->mdio_meta);
2671                         sa = ddf_meta_find_sa(&pd->pd_meta, 1);
2672                         if (sa != NULL) {
2673                                 SET32D(&pd->pd_meta, sa->Signature,
2674                                     DDF_SA_SIGNATURE);
2675                                 SET8D(&pd->pd_meta, sa->Spare_Type, 0);
2676                                 SET16D(&pd->pd_meta, sa->Populated_SAEs, 0);
2677                                 SET16D(&pd->pd_meta, sa->MAX_SAE_Supported,
2678                                     (GET16(&pd->pd_meta, hdr->Configuration_Record_Length) *
2679                                      pd->pd_meta.sectorsize -
2680                                      sizeof(struct ddf_sa_record)) /
2681                                     sizeof(struct ddf_sa_entry));
2682                         }
2683                         if (mdi->mdio_meta.hdr == NULL)
2684                                 ddf_meta_copy(&mdi->mdio_meta, &pd->pd_meta);
2685                         else
2686                                 ddf_meta_update(&mdi->mdio_meta, &pd->pd_meta);
2687                         g_raid_md_write_ddf(md, NULL, NULL, NULL);
2688                         g_raid_md_ddf_refill(sc);
2689                 }
2690                 return (error);
2691         }
2692         return (-100);
2693 }
2694
2695 static int
2696 g_raid_md_write_ddf(struct g_raid_md_object *md, struct g_raid_volume *tvol,
2697     struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
2698 {
2699         struct g_raid_softc *sc;
2700         struct g_raid_volume *vol;
2701         struct g_raid_subdisk *sd;
2702         struct g_raid_disk *disk;
2703         struct g_raid_md_ddf_perdisk *pd;
2704         struct g_raid_md_ddf_pervolume *pv;
2705         struct g_raid_md_ddf_object *mdi;
2706         struct ddf_meta *gmeta;
2707         struct ddf_vol_meta *vmeta;
2708         struct ddf_vdc_record *vdc;
2709         struct ddf_sa_record *sa;
2710         uint64_t *val2;
2711         int i, j, pos, bvd, size;
2712
2713         sc = md->mdo_softc;
2714         mdi = (struct g_raid_md_ddf_object *)md;
2715         gmeta = &mdi->mdio_meta;
2716
2717         if (sc->sc_stopping == G_RAID_DESTROY_HARD)
2718                 return (0);
2719
2720         /*
2721          * Clear disk flags to let only really needed ones to be reset.
2722          * Do it only if there are no volumes in starting state now,
2723          * as they can update disk statuses yet and we may kill innocent.
2724          */
2725         if (mdi->mdio_starting == 0) {
2726                 for (i = 0; i < GET16(gmeta, pdr->Populated_PDEs); i++) {
2727                         if (isff(gmeta->pdr->entry[i].PD_GUID, 24))
2728                                 continue;
2729                         SET16(gmeta, pdr->entry[i].PD_Type,
2730                             GET16(gmeta, pdr->entry[i].PD_Type) &
2731                             ~(DDF_PDE_PARTICIPATING |
2732                               DDF_PDE_GLOBAL_SPARE | DDF_PDE_CONFIG_SPARE));
2733                         if ((GET16(gmeta, pdr->entry[i].PD_State) &
2734                             DDF_PDE_PFA) == 0)
2735                                 SET16(gmeta, pdr->entry[i].PD_State, 0);
2736                 }
2737         }
2738
2739         /* Generate/update new per-volume metadata. */
2740         TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
2741                 pv = (struct g_raid_md_ddf_pervolume *)vol->v_md_data;
2742                 if (vol->v_stopping || !pv->pv_started)
2743                         continue;
2744                 vmeta = &pv->pv_meta;
2745
2746                 SET32(vmeta, vdc->Sequence_Number,
2747                     GET32(vmeta, vdc->Sequence_Number) + 1);
2748                 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E &&
2749                     vol->v_disks_count % 2 == 0)
2750                         SET16(vmeta, vdc->Primary_Element_Count, 2);
2751                 else
2752                         SET16(vmeta, vdc->Primary_Element_Count,
2753                             vol->v_disks_count);
2754                 SET8(vmeta, vdc->Stripe_Size,
2755                     ffs(vol->v_strip_size / vol->v_sectorsize) - 1);
2756                 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E &&
2757                     vol->v_disks_count % 2 == 0) {
2758                         SET8(vmeta, vdc->Primary_RAID_Level,
2759                             DDF_VDCR_RAID1);
2760                         SET8(vmeta, vdc->RLQ, 0);
2761                         SET8(vmeta, vdc->Secondary_Element_Count,
2762                             vol->v_disks_count / 2);
2763                         SET8(vmeta, vdc->Secondary_RAID_Level, 0);
2764                 } else {
2765                         SET8(vmeta, vdc->Primary_RAID_Level,
2766                             vol->v_raid_level);
2767                         SET8(vmeta, vdc->RLQ,
2768                             vol->v_raid_level_qualifier);
2769                         SET8(vmeta, vdc->Secondary_Element_Count, 1);
2770                         SET8(vmeta, vdc->Secondary_RAID_Level, 0);
2771                 }
2772                 SET8(vmeta, vdc->Secondary_Element_Seq, 0);
2773                 SET64(vmeta, vdc->Block_Count, 0);
2774                 SET64(vmeta, vdc->VD_Size, vol->v_mediasize / vol->v_sectorsize);
2775                 SET16(vmeta, vdc->Block_Size, vol->v_sectorsize);
2776                 SET8(vmeta, vdc->Rotate_Parity_count,
2777                     fls(vol->v_rotate_parity) - 1);
2778                 SET8(vmeta, vdc->MDF_Parity_Disks, vol->v_mdf_pdisks);
2779                 SET16(vmeta, vdc->MDF_Parity_Generator_Polynomial,
2780                     vol->v_mdf_polynomial);
2781                 SET8(vmeta, vdc->MDF_Constant_Generation_Method,
2782                     vol->v_mdf_method);
2783
2784                 SET16(vmeta, vde->VD_Number, vol->v_global_id);
2785                 if (vol->v_state <= G_RAID_VOLUME_S_BROKEN)
2786                         SET8(vmeta, vde->VD_State, DDF_VDE_FAILED);
2787                 else if (vol->v_state <= G_RAID_VOLUME_S_DEGRADED)
2788                         SET8(vmeta, vde->VD_State, DDF_VDE_DEGRADED);
2789                 else if (vol->v_state <= G_RAID_VOLUME_S_SUBOPTIMAL)
2790                         SET8(vmeta, vde->VD_State, DDF_VDE_PARTIAL);
2791                 else
2792                         SET8(vmeta, vde->VD_State, DDF_VDE_OPTIMAL);
2793                 if (vol->v_dirty ||
2794                     g_raid_nsubdisks(vol, G_RAID_SUBDISK_S_STALE) > 0 ||
2795                     g_raid_nsubdisks(vol, G_RAID_SUBDISK_S_RESYNC) > 0)
2796                         SET8(vmeta, vde->VD_State,
2797                             GET8(vmeta, vde->VD_State) | DDF_VDE_DIRTY);
2798                 SET8(vmeta, vde->Init_State, DDF_VDE_INIT_FULL); // XXX
2799                 ddf_meta_put_name(vmeta, vol->v_name);
2800
2801                 for (i = 0; i < vol->v_disks_count; i++) {
2802                         sd = &vol->v_subdisks[i];
2803                         bvd = i / GET16(vmeta, vdc->Primary_Element_Count);
2804                         pos = i % GET16(vmeta, vdc->Primary_Element_Count);
2805                         disk = sd->sd_disk;
2806                         if (disk != NULL) {
2807                                 pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
2808                                 if (vmeta->bvdc[bvd] == NULL) {
2809                                         size = GET16(vmeta,
2810                                             hdr->Configuration_Record_Length) *
2811                                             vmeta->sectorsize;
2812                                         vmeta->bvdc[bvd] = malloc(size,
2813                                             M_MD_DDF, M_WAITOK);
2814                                         memset(vmeta->bvdc[bvd], 0xff, size);
2815                                 }
2816                                 memcpy(vmeta->bvdc[bvd], vmeta->vdc,
2817                                     sizeof(struct ddf_vdc_record));
2818                                 SET8(vmeta, bvdc[bvd]->Secondary_Element_Seq, bvd);
2819                                 SET64(vmeta, bvdc[bvd]->Block_Count,
2820                                     sd->sd_size / vol->v_sectorsize);
2821                                 SET32(vmeta, bvdc[bvd]->Physical_Disk_Sequence[pos],
2822                                     GET32(&pd->pd_meta, pdd->PD_Reference));
2823                                 val2 = (uint64_t *)&(vmeta->bvdc[bvd]->Physical_Disk_Sequence[
2824                                     GET16(vmeta, hdr->Max_Primary_Element_Entries)]);
2825                                 SET64P(vmeta, val2 + pos,
2826                                     sd->sd_offset / vol->v_sectorsize);
2827                         }
2828                         if (vmeta->bvdc[bvd] == NULL)
2829                                 continue;
2830
2831                         j = ddf_meta_find_pd(gmeta, NULL,
2832                             GET32(vmeta, bvdc[bvd]->Physical_Disk_Sequence[pos]));
2833                         if (j < 0)
2834                                 continue;
2835                         SET32(gmeta, pdr->entry[j].PD_Type,
2836                             GET32(gmeta, pdr->entry[j].PD_Type) |
2837                             DDF_PDE_PARTICIPATING);
2838                         if (sd->sd_state == G_RAID_SUBDISK_S_NONE)
2839                                 SET32(gmeta, pdr->entry[j].PD_State,
2840                                     GET32(gmeta, pdr->entry[j].PD_State) |
2841                                     (DDF_PDE_FAILED | DDF_PDE_MISSING));
2842                         else if (sd->sd_state == G_RAID_SUBDISK_S_FAILED)
2843                                 SET32(gmeta, pdr->entry[j].PD_State,
2844                                     GET32(gmeta, pdr->entry[j].PD_State) |
2845                                     (DDF_PDE_FAILED | DDF_PDE_PFA));
2846                         else if (sd->sd_state <= G_RAID_SUBDISK_S_REBUILD)
2847                                 SET32(gmeta, pdr->entry[j].PD_State,
2848                                     GET32(gmeta, pdr->entry[j].PD_State) |
2849                                     DDF_PDE_REBUILD);
2850                         else
2851                                 SET32(gmeta, pdr->entry[j].PD_State,
2852                                     GET32(gmeta, pdr->entry[j].PD_State) |
2853                                     DDF_PDE_ONLINE);
2854                 }
2855         }
2856
2857         /* Mark spare and failed disks as such. */
2858         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
2859                 pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
2860                 i = ddf_meta_find_pd(gmeta, NULL,
2861                     GET32(&pd->pd_meta, pdd->PD_Reference));
2862                 if (i < 0)
2863                         continue;
2864                 if (disk->d_state == G_RAID_DISK_S_FAILED) {
2865                         SET32(gmeta, pdr->entry[i].PD_State,
2866                             GET32(gmeta, pdr->entry[i].PD_State) |
2867                             (DDF_PDE_FAILED | DDF_PDE_PFA));
2868                 }
2869                 if (disk->d_state != G_RAID_DISK_S_SPARE)
2870                         continue;
2871                 sa = ddf_meta_find_sa(&pd->pd_meta, 0);
2872                 if (sa == NULL ||
2873                     (GET8D(&pd->pd_meta, sa->Spare_Type) &
2874                      DDF_SAR_TYPE_DEDICATED) == 0) {
2875                         SET16(gmeta, pdr->entry[i].PD_Type,
2876                             GET16(gmeta, pdr->entry[i].PD_Type) |
2877                             DDF_PDE_GLOBAL_SPARE);
2878                 } else {
2879                         SET16(gmeta, pdr->entry[i].PD_Type,
2880                             GET16(gmeta, pdr->entry[i].PD_Type) |
2881                             DDF_PDE_CONFIG_SPARE);
2882                 }
2883                 SET32(gmeta, pdr->entry[i].PD_State,
2884                     GET32(gmeta, pdr->entry[i].PD_State) |
2885                     DDF_PDE_ONLINE);
2886         }
2887
2888         /* Remove disks without "participating" flag (unused). */
2889         for (i = 0, j = -1; i < GET16(gmeta, pdr->Populated_PDEs); i++) {
2890                 if (isff(gmeta->pdr->entry[i].PD_GUID, 24))
2891                         continue;
2892                 if ((GET16(gmeta, pdr->entry[i].PD_Type) &
2893                     (DDF_PDE_PARTICIPATING |
2894                      DDF_PDE_GLOBAL_SPARE | DDF_PDE_CONFIG_SPARE)) != 0 ||
2895                     g_raid_md_ddf_get_disk(sc,
2896                      NULL, GET32(gmeta, pdr->entry[i].PD_Reference)) != NULL)
2897                         j = i;
2898                 else
2899                         memset(&gmeta->pdr->entry[i], 0xff,
2900                             sizeof(struct ddf_pd_entry));
2901         }
2902         SET16(gmeta, pdr->Populated_PDEs, j + 1);
2903
2904         /* Update per-disk metadata and write them. */
2905         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
2906                 pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
2907                 if (disk->d_state != G_RAID_DISK_S_ACTIVE &&
2908                     disk->d_state != G_RAID_DISK_S_SPARE)
2909                         continue;
2910                 /* Update PDR. */
2911                 memcpy(pd->pd_meta.pdr, gmeta->pdr,
2912                     GET32(&pd->pd_meta, hdr->pdr_length) *
2913                     pd->pd_meta.sectorsize);
2914                 /* Update VDR. */
2915                 SET16(&pd->pd_meta, vdr->Populated_VDEs, 0);
2916                 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
2917                         if (vol->v_stopping)
2918                                 continue;
2919                         pv = (struct g_raid_md_ddf_pervolume *)vol->v_md_data;
2920                         i = ddf_meta_find_vd(&pd->pd_meta,
2921                             pv->pv_meta.vde->VD_GUID);
2922                         if (i < 0)
2923                                 i = ddf_meta_find_vd(&pd->pd_meta, NULL);
2924                         if (i >= 0)
2925                                 memcpy(&pd->pd_meta.vdr->entry[i],
2926                                     pv->pv_meta.vde,
2927                                     sizeof(struct ddf_vd_entry));
2928                 }
2929                 /* Update VDC. */
2930                 if (mdi->mdio_starting == 0) {
2931                         /* Remove all VDCs to restore needed later. */
2932                         j = GETCRNUM(&pd->pd_meta);
2933                         for (i = 0; i < j; i++) {
2934                                 vdc = GETVDCPTR(&pd->pd_meta, i);
2935                                 if (GET32D(&pd->pd_meta, vdc->Signature) !=
2936                                     DDF_VDCR_SIGNATURE)
2937                                         continue;
2938                                 SET32D(&pd->pd_meta, vdc->Signature, 0xffffffff);
2939                         }
2940                 }
2941                 TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) {
2942                         vol = sd->sd_volume;
2943                         if (vol->v_stopping)
2944                                 continue;
2945                         pv = (struct g_raid_md_ddf_pervolume *)vol->v_md_data;
2946                         vmeta = &pv->pv_meta;
2947                         vdc = ddf_meta_find_vdc(&pd->pd_meta,
2948                             vmeta->vde->VD_GUID);
2949                         if (vdc == NULL)
2950                                 vdc = ddf_meta_find_vdc(&pd->pd_meta, NULL);
2951                         if (vdc != NULL) {
2952                                 bvd = sd->sd_pos / GET16(vmeta,
2953                                     vdc->Primary_Element_Count);
2954                                 memcpy(vdc, vmeta->bvdc[bvd],
2955                                     GET16(&pd->pd_meta,
2956                                     hdr->Configuration_Record_Length) *
2957                                     pd->pd_meta.sectorsize);
2958                         }
2959                 }
2960                 G_RAID_DEBUG(1, "Writing DDF metadata to %s",
2961                     g_raid_get_diskname(disk));
2962                 g_raid_md_ddf_print(&pd->pd_meta);
2963                 ddf_meta_write(disk->d_consumer, &pd->pd_meta);
2964         }
2965         return (0);
2966 }
2967
2968 static int
2969 g_raid_md_fail_disk_ddf(struct g_raid_md_object *md,
2970     struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
2971 {
2972         struct g_raid_softc *sc;
2973         struct g_raid_md_ddf_perdisk *pd;
2974         struct g_raid_subdisk *sd;
2975         int i;
2976
2977         sc = md->mdo_softc;
2978         pd = (struct g_raid_md_ddf_perdisk *)tdisk->d_md_data;
2979
2980         /* We can't fail disk that is not a part of array now. */
2981         if (tdisk->d_state != G_RAID_DISK_S_ACTIVE)
2982                 return (-1);
2983
2984         /*
2985          * Mark disk as failed in metadata and try to write that metadata
2986          * to the disk itself to prevent it's later resurrection as STALE.
2987          */
2988         G_RAID_DEBUG(1, "Writing DDF metadata to %s",
2989             g_raid_get_diskname(tdisk));
2990         i = ddf_meta_find_pd(&pd->pd_meta, NULL, GET32(&pd->pd_meta, pdd->PD_Reference));
2991         SET16(&pd->pd_meta, pdr->entry[i].PD_State, DDF_PDE_FAILED | DDF_PDE_PFA);
2992         if (tdisk->d_consumer != NULL)
2993                 ddf_meta_write(tdisk->d_consumer, &pd->pd_meta);
2994
2995         /* Change states. */
2996         g_raid_change_disk_state(tdisk, G_RAID_DISK_S_FAILED);
2997         TAILQ_FOREACH(sd, &tdisk->d_subdisks, sd_next) {
2998                 g_raid_change_subdisk_state(sd,
2999                     G_RAID_SUBDISK_S_FAILED);
3000                 g_raid_event_send(sd, G_RAID_SUBDISK_E_FAILED,
3001                     G_RAID_EVENT_SUBDISK);
3002         }
3003
3004         /* Write updated metadata to remaining disks. */
3005         g_raid_md_write_ddf(md, NULL, NULL, tdisk);
3006
3007         g_raid_md_ddf_refill(sc);
3008         return (0);
3009 }
3010
3011 static int
3012 g_raid_md_free_disk_ddf(struct g_raid_md_object *md,
3013     struct g_raid_disk *disk)
3014 {
3015         struct g_raid_md_ddf_perdisk *pd;
3016
3017         pd = (struct g_raid_md_ddf_perdisk *)disk->d_md_data;
3018         ddf_meta_free(&pd->pd_meta);
3019         free(pd, M_MD_DDF);
3020         disk->d_md_data = NULL;
3021         return (0);
3022 }
3023
3024 static int
3025 g_raid_md_free_volume_ddf(struct g_raid_md_object *md,
3026     struct g_raid_volume *vol)
3027 {
3028         struct g_raid_md_ddf_object *mdi;
3029         struct g_raid_md_ddf_pervolume *pv;
3030
3031         mdi = (struct g_raid_md_ddf_object *)md;
3032         pv = (struct g_raid_md_ddf_pervolume *)vol->v_md_data;
3033         ddf_vol_meta_free(&pv->pv_meta);
3034         if (!pv->pv_started) {
3035                 pv->pv_started = 1;
3036                 mdi->mdio_starting--;
3037                 callout_stop(&pv->pv_start_co);
3038         }
3039         free(pv, M_MD_DDF);
3040         vol->v_md_data = NULL;
3041         return (0);
3042 }
3043
3044 static int
3045 g_raid_md_free_ddf(struct g_raid_md_object *md)
3046 {
3047         struct g_raid_md_ddf_object *mdi;
3048
3049         mdi = (struct g_raid_md_ddf_object *)md;
3050         if (!mdi->mdio_started) {
3051                 mdi->mdio_started = 0;
3052                 callout_stop(&mdi->mdio_start_co);
3053                 G_RAID_DEBUG1(1, md->mdo_softc,
3054                     "root_mount_rel %p", mdi->mdio_rootmount);
3055                 root_mount_rel(mdi->mdio_rootmount);
3056                 mdi->mdio_rootmount = NULL;
3057         }
3058         ddf_meta_free(&mdi->mdio_meta);
3059         return (0);
3060 }
3061
3062 G_RAID_MD_DECLARE(ddf, "DDF");