2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2006-2007 Neil Brown <neilb@suse.de>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * Email: <neil@brown.name>
24 * Specifications for DDF takes from Common RAID DDF Specification Revision 1.2
25 * (July 28 2006). Reused by permission of SNIA.
28 #define HAVE_STDINT_H 1
34 static inline int ROUND_UP(int a
, int base
)
36 return ((a
+base
-1)/base
)*base
;
39 /* a non-official T10 name for creation GUIDs */
40 static char T10
[] = "Linux-MD";
42 /* DDF timestamps are 1980 based, so we need to add
43 * second-in-decade-of-seventies to convert to linux timestamps.
44 * 10 years with 2 leap years.
46 #define DECADE (3600*24*(365*10+2))
49 const unsigned char *buf
,
52 /* The DDF metadata handling.
53 * DDF metadata lives at the end of the device.
54 * The last 512 byte block provides an 'anchor' which is used to locate
55 * the rest of the metadata which usually lives immediately behind the anchor.
58 * - all multibyte numeric fields are bigendian.
59 * - all strings are space padded.
63 /* Primary Raid Level (PRL) */
64 #define DDF_RAID0 0x00
65 #define DDF_RAID1 0x01
66 #define DDF_RAID3 0x03
67 #define DDF_RAID4 0x04
68 #define DDF_RAID5 0x05
69 #define DDF_RAID1E 0x11
71 #define DDF_CONCAT 0x1f
72 #define DDF_RAID5E 0x15
73 #define DDF_RAID5EE 0x25
74 #define DDF_RAID6 0x06
76 /* Raid Level Qualifier (RLQ) */
77 #define DDF_RAID0_SIMPLE 0x00
78 #define DDF_RAID1_SIMPLE 0x00 /* just 2 devices in this plex */
79 #define DDF_RAID1_MULTI 0x01 /* exactly 3 devices in this plex */
80 #define DDF_RAID3_0 0x00 /* parity in first extent */
81 #define DDF_RAID3_N 0x01 /* parity in last extent */
82 #define DDF_RAID4_0 0x00 /* parity in first extent */
83 #define DDF_RAID4_N 0x01 /* parity in last extent */
84 /* these apply to raid5e and raid5ee as well */
85 #define DDF_RAID5_0_RESTART 0x00 /* same as 'right asymmetric' - layout 1 */
86 #define DDF_RAID6_0_RESTART 0x01 /* raid6 different from raid5 here!!! */
87 #define DDF_RAID5_N_RESTART 0x02 /* same as 'left asymmetric' - layout 0 */
88 #define DDF_RAID5_N_CONTINUE 0x03 /* same as 'left symmetric' - layout 2 */
90 #define DDF_RAID1E_ADJACENT 0x00 /* raid10 nearcopies==2 */
91 #define DDF_RAID1E_OFFSET 0x01 /* raid10 offsetcopies==2 */
93 /* Secondary RAID Level (SRL) */
94 #define DDF_2STRIPED 0x00 /* This is weirder than RAID0 !! */
95 #define DDF_2MIRRORED 0x01
96 #define DDF_2CONCAT 0x02
97 #define DDF_2SPANNED 0x03 /* This is also weird - be careful */
100 #define DDF_HEADER_MAGIC __cpu_to_be32(0xDE11DE11)
101 #define DDF_CONTROLLER_MAGIC __cpu_to_be32(0xAD111111)
102 #define DDF_PHYS_RECORDS_MAGIC __cpu_to_be32(0x22222222)
103 #define DDF_PHYS_DATA_MAGIC __cpu_to_be32(0x33333333)
104 #define DDF_VIRT_RECORDS_MAGIC __cpu_to_be32(0xDDDDDDDD)
105 #define DDF_VD_CONF_MAGIC __cpu_to_be32(0xEEEEEEEE)
106 #define DDF_SPARE_ASSIGN_MAGIC __cpu_to_be32(0x55555555)
107 #define DDF_VU_CONF_MAGIC __cpu_to_be32(0x88888888)
108 #define DDF_VENDOR_LOG_MAGIC __cpu_to_be32(0x01dBEEF0)
109 #define DDF_BBM_LOG_MAGIC __cpu_to_be32(0xABADB10C)
111 #define DDF_GUID_LEN 24
112 #define DDF_REVISION_0 "01.00.00"
113 #define DDF_REVISION_2 "01.02.00"
116 __u32 magic
; /* DDF_HEADER_MAGIC */
118 char guid
[DDF_GUID_LEN
];
119 char revision
[8]; /* 01.02.00 */
120 __u32 seq
; /* starts at '1' */
125 __u8 pad0
; /* 0xff */
126 __u8 pad1
[12]; /* 12 * 0xff */
127 /* 64 bytes so far */
128 __u8 header_ext
[32]; /* reserved: fill with 0xff */
132 __u8 pad2
[3]; /* 0xff */
133 __u32 workspace_len
; /* sectors for vendor space -
134 * at least 32768(sectors) */
136 __u16 max_pd_entries
; /* one of 15, 63, 255, 1023, 4095 */
137 __u16 max_vd_entries
; /* 2^(4,6,8,10,12)-1 : i.e. as above */
138 __u16 max_partitions
; /* i.e. max num of configuration
139 record entries per disk */
140 __u16 config_record_len
; /* 1 +ROUNDUP(max_primary_element_entries
142 __u16 max_primary_element_entries
; /* 16, 64, 256, 1024, or 4096 */
143 __u8 pad3
[54]; /* 0xff */
144 /* 192 bytes so far */
145 __u32 controller_section_offset
;
146 __u32 controller_section_length
;
147 __u32 phys_section_offset
;
148 __u32 phys_section_length
;
149 __u32 virt_section_offset
;
150 __u32 virt_section_length
;
151 __u32 config_section_offset
;
152 __u32 config_section_length
;
153 __u32 data_section_offset
;
154 __u32 data_section_length
;
155 __u32 bbm_section_offset
;
156 __u32 bbm_section_length
;
157 __u32 diag_space_offset
;
158 __u32 diag_space_length
;
161 /* 256 bytes so far */
162 __u8 pad4
[256]; /* 0xff */
166 #define DDF_HEADER_ANCHOR 0x00
167 #define DDF_HEADER_PRIMARY 0x01
168 #define DDF_HEADER_SECONDARY 0x02
170 /* The content of the 'controller section' - global scope */
171 struct ddf_controller_data
{
172 __u32 magic
; /* DDF_CONTROLLER_MAGIC */
174 char guid
[DDF_GUID_LEN
];
175 struct controller_type
{
182 __u8 pad
[8]; /* 0xff */
183 __u8 vendor_data
[448];
186 /* The content of phys_section - global scope */
188 __u32 magic
; /* DDF_PHYS_RECORDS_MAGIC */
193 struct phys_disk_entry
{
194 char guid
[DDF_GUID_LEN
];
198 __u64 config_size
; /* DDF structures must be after here */
199 char path
[18]; /* another horrible structure really */
204 /* phys_disk_entry.type is a bitmap - bigendian remember */
205 #define DDF_Forced_PD_GUID 1
206 #define DDF_Active_in_VD 2
207 #define DDF_Global_Spare 4 /* VD_CONF records are ignored */
208 #define DDF_Spare 8 /* overrides Global_spare */
209 #define DDF_Foreign 16
210 #define DDF_Legacy 32 /* no DDF on this device */
212 #define DDF_Interface_mask 0xf00
213 #define DDF_Interface_SCSI 0x100
214 #define DDF_Interface_SAS 0x200
215 #define DDF_Interface_SATA 0x300
216 #define DDF_Interface_FC 0x400
218 /* phys_disk_entry.state is a bigendian bitmap */
220 #define DDF_Failed 2 /* overrides 1,4,8 */
221 #define DDF_Rebuilding 4
222 #define DDF_Transition 8
224 #define DDF_ReadErrors 32
225 #define DDF_Missing 64
227 /* The content of the virt_section global scope */
228 struct virtual_disk
{
229 __u32 magic
; /* DDF_VIRT_RECORDS_MAGIC */
231 __u16 populated_vdes
;
234 struct virtual_entry
{
235 char guid
[DDF_GUID_LEN
];
237 __u16 pad0
; /* 0xffff */
247 /* virtual_entry.type is a bitmap - bigendian */
249 #define DDF_Enforce_Groups 2
250 #define DDF_Unicode 4
251 #define DDF_Owner_Valid 8
253 /* virtual_entry.state is a bigendian bitmap */
254 #define DDF_state_mask 0x7
255 #define DDF_state_optimal 0x0
256 #define DDF_state_degraded 0x1
257 #define DDF_state_deleted 0x2
258 #define DDF_state_missing 0x3
259 #define DDF_state_failed 0x4
260 #define DDF_state_part_optimal 0x5
262 #define DDF_state_morphing 0x8
263 #define DDF_state_inconsistent 0x10
265 /* virtual_entry.init_state is a bigendian bitmap */
266 #define DDF_initstate_mask 0x03
267 #define DDF_init_not 0x00
268 #define DDF_init_quick 0x01 /* initialisation is progress.
269 * i.e. 'state_inconsistent' */
270 #define DDF_init_full 0x02
272 #define DDF_access_mask 0xc0
273 #define DDF_access_rw 0x00
274 #define DDF_access_ro 0x80
275 #define DDF_access_blocked 0xc0
277 /* The content of the config_section - local scope
278 * It has multiple records each config_record_len sectors
279 * They can be vd_config or spare_assign
283 __u32 magic
; /* DDF_VD_CONF_MAGIC */
285 char guid
[DDF_GUID_LEN
];
289 __u16 prim_elmnt_count
;
290 __u8 chunk_shift
; /* 0 == 512, 1==1024 etc */
293 __u8 sec_elmnt_count
;
296 __u64 blocks
; /* blocks per component could be different
297 * on different component devices...(only
298 * for concat I hope) */
299 __u64 array_blocks
; /* blocks in array */
307 __u8 v0
[32]; /* reserved- 0xff */
308 __u8 v1
[32]; /* reserved- 0xff */
309 __u8 v2
[16]; /* reserved- 0xff */
310 __u8 v3
[16]; /* reserved- 0xff */
312 __u32 phys_refnum
[0]; /* refnum of each disk in sequence */
313 /*__u64 lba_offset[0]; LBA offset in each phys. Note extents in a
314 bvd are always the same size */
317 /* vd_config.cache_pol[7] is a bitmap */
318 #define DDF_cache_writeback 1 /* else writethrough */
319 #define DDF_cache_wadaptive 2 /* only applies if writeback */
320 #define DDF_cache_readahead 4
321 #define DDF_cache_radaptive 8 /* only if doing read-ahead */
322 #define DDF_cache_ifnobatt 16 /* even to write cache if battery is poor */
323 #define DDF_cache_wallowed 32 /* enable write caching */
324 #define DDF_cache_rallowed 64 /* enable read caching */
326 struct spare_assign
{
327 __u32 magic
; /* DDF_SPARE_ASSIGN_MAGIC */
332 __u16 populated
; /* SAEs used */
333 __u16 max
; /* max SAEs */
335 struct spare_assign_entry
{
336 char guid
[DDF_GUID_LEN
];
337 __u16 secondary_element
;
341 /* spare_assign.type is a bitmap */
342 #define DDF_spare_dedicated 0x1 /* else global */
343 #define DDF_spare_revertible 0x2 /* else committable */
344 #define DDF_spare_active 0x4 /* else not active */
345 #define DDF_spare_affinity 0x8 /* enclosure affinity */
347 /* The data_section contents - local scope */
349 __u32 magic
; /* DDF_PHYS_DATA_MAGIC */
351 char guid
[DDF_GUID_LEN
];
352 __u32 refnum
; /* crc of some magic drive data ... */
353 __u8 forced_ref
; /* set when above was not result of magic */
354 __u8 forced_guid
; /* set if guid was forced rather than magic */
359 /* bbm_section content */
360 struct bad_block_log
{
367 struct mapped_block
{
368 __u64 defective_start
;
369 __u32 replacement_start
;
375 /* Struct for internally holding ddf structures */
376 /* The DDF structure stored on each device is potentially
377 * quite different, as some data is global and some is local.
378 * The global data is:
381 * - Physical disk records
382 * - Virtual disk records
384 * - Configuration records
385 * - Physical Disk data section
386 * ( and Bad block and vendor which I don't care about yet).
388 * The local data is parsed into separate lists as it is read
389 * and reconstructed for writing. This means that we only need
390 * to make config changes once and they are automatically
391 * propagated to all devices.
392 * Note that the ddf_super has space of the conf and disk data
393 * for this disk and also for a list of all such data.
394 * The list is only used for the superblock that is being
395 * built in Create or Assemble to describe the whole array.
398 struct ddf_header anchor
, primary
, secondary
, *active
;
399 struct ddf_controller_data controller
;
400 struct phys_disk
*phys
;
401 struct virtual_disk
*virt
;
403 int max_part
, mppe
, conf_rec_len
;
407 __u64
*lba_offset
; /* location in 'conf' of
409 int vcnum
; /* index into ->virt */
410 __u64
*block_sizes
; /* NULL if all the same */
411 struct vd_config conf
;
412 } *conflist
, *currentconf
;
415 struct disk_data disk
;
419 unsigned long long size
; /* sectors */
420 int pdnum
; /* index in ->phys */
421 struct spare_assign
*spare
;
422 struct vcl
*vlist
[0]; /* max_part in size */
427 #define offsetof(t,f) ((size_t)&(((t*)0)->f))
431 static int calc_crc(void *buf
, int len
)
433 /* crcs are always at the same place as in the ddf_header */
434 struct ddf_header
*ddf
= buf
;
435 __u32 oldcrc
= ddf
->crc
;
437 ddf
->crc
= 0xffffffff;
439 newcrc
= crc32(0, buf
, len
);
444 static int load_ddf_header(int fd
, unsigned long long lba
,
445 unsigned long long size
,
447 struct ddf_header
*hdr
, struct ddf_header
*anchor
)
449 /* read a ddf header (primary or secondary) from fd/lba
450 * and check that it is consistent with anchor
452 * magic, crc, guid, rev, and LBA's header_type, and
453 * everything after header_type must be the same
458 if (lseek64(fd
, lba
<<9, 0) < 0)
461 if (read(fd
, hdr
, 512) != 512)
464 if (hdr
->magic
!= DDF_HEADER_MAGIC
)
466 if (calc_crc(hdr
, 512) != hdr
->crc
)
468 if (memcmp(anchor
->guid
, hdr
->guid
, DDF_GUID_LEN
) != 0 ||
469 memcmp(anchor
->revision
, hdr
->revision
, 8) != 0 ||
470 anchor
->primary_lba
!= hdr
->primary_lba
||
471 anchor
->secondary_lba
!= hdr
->secondary_lba
||
473 memcmp(anchor
->pad2
, hdr
->pad2
, 512 -
474 offsetof(struct ddf_header
, pad2
)) != 0)
477 /* Looks good enough to me... */
481 static void *load_section(int fd
, struct ddf_super
*super
, void *buf
,
482 __u32 offset_be
, __u32 len_be
, int check
)
484 unsigned long long offset
= __be32_to_cpu(offset_be
);
485 unsigned long long len
= __be32_to_cpu(len_be
);
486 int dofree
= (buf
== NULL
);
489 if (len
!= 2 && len
!= 8 && len
!= 32
490 && len
!= 128 && len
!= 512)
496 /* All pre-allocated sections are a single block */
500 buf
= malloc(len
<<9);
504 if (super
->active
->type
== 1)
505 offset
+= __be64_to_cpu(super
->active
->primary_lba
);
507 offset
+= __be64_to_cpu(super
->active
->secondary_lba
);
509 if (lseek64(fd
, offset
<<9, 0) != (offset
<<9)) {
514 if (read(fd
, buf
, len
<<9) != (len
<<9)) {
522 static int load_ddf_headers(int fd
, struct ddf_super
*super
, char *devname
)
524 unsigned long long dsize
;
526 get_dev_size(fd
, NULL
, &dsize
);
528 if (lseek64(fd
, dsize
-512, 0) < 0) {
531 Name
": Cannot seek to anchor block on %s: %s\n",
532 devname
, strerror(errno
));
535 if (read(fd
, &super
->anchor
, 512) != 512) {
538 Name
": Cannot read anchor block on %s: %s\n",
539 devname
, strerror(errno
));
542 if (super
->anchor
.magic
!= DDF_HEADER_MAGIC
) {
544 fprintf(stderr
, Name
": no DDF anchor found on %s\n",
548 if (calc_crc(&super
->anchor
, 512) != super
->anchor
.crc
) {
550 fprintf(stderr
, Name
": bad CRC on anchor on %s\n",
554 if (memcmp(super
->anchor
.revision
, DDF_REVISION_0
, 8) != 0 &&
555 memcmp(super
->anchor
.revision
, DDF_REVISION_2
, 8) != 0) {
557 fprintf(stderr
, Name
": can only support super revision"
558 " %.8s and earlier, not %.8s on %s\n",
559 DDF_REVISION_2
, super
->anchor
.revision
,devname
);
562 if (load_ddf_header(fd
, __be64_to_cpu(super
->anchor
.primary_lba
),
564 &super
->primary
, &super
->anchor
) == 0) {
567 Name
": Failed to load primary DDF header "
571 super
->active
= &super
->primary
;
572 if (load_ddf_header(fd
, __be64_to_cpu(super
->anchor
.secondary_lba
),
574 &super
->secondary
, &super
->anchor
)) {
575 if ((__be32_to_cpu(super
->primary
.seq
)
576 < __be32_to_cpu(super
->secondary
.seq
) &&
577 !super
->secondary
.openflag
)
578 || (__be32_to_cpu(super
->primary
.seq
)
579 == __be32_to_cpu(super
->secondary
.seq
) &&
580 super
->primary
.openflag
&& !super
->secondary
.openflag
)
582 super
->active
= &super
->secondary
;
587 static int load_ddf_global(int fd
, struct ddf_super
*super
, char *devname
)
590 ok
= load_section(fd
, super
, &super
->controller
,
591 super
->active
->controller_section_offset
,
592 super
->active
->controller_section_length
,
594 super
->phys
= load_section(fd
, super
, NULL
,
595 super
->active
->phys_section_offset
,
596 super
->active
->phys_section_length
,
598 super
->pdsize
= __be32_to_cpu(super
->active
->phys_section_length
) * 512;
600 super
->virt
= load_section(fd
, super
, NULL
,
601 super
->active
->virt_section_offset
,
602 super
->active
->virt_section_length
,
604 super
->vdsize
= __be32_to_cpu(super
->active
->virt_section_length
) * 512;
614 super
->conflist
= NULL
;
617 super
->max_part
= __be16_to_cpu(super
->active
->max_partitions
);
618 super
->mppe
= __be16_to_cpu(super
->active
->max_primary_element_entries
);
619 super
->conf_rec_len
= __be16_to_cpu(super
->active
->config_record_len
);
623 static int load_ddf_local(int fd
, struct ddf_super
*super
,
624 char *devname
, int keep
)
631 int max_virt_disks
= __be16_to_cpu(super
->active
->max_vd_entries
);
632 unsigned long long dsize
;
634 /* First the local disk info */
635 dl
= malloc(sizeof(*dl
) +
636 (super
->max_part
) * sizeof(dl
->vlist
[0]));
638 load_section(fd
, super
, &dl
->disk
,
639 super
->active
->data_section_offset
,
640 super
->active
->data_section_length
,
642 dl
->devname
= devname
? strdup(devname
) : NULL
;
645 dl
->major
= major(stb
.st_rdev
);
646 dl
->minor
= minor(stb
.st_rdev
);
647 dl
->next
= super
->dlist
;
648 dl
->fd
= keep
? fd
: -1;
651 if (get_dev_size(fd
, devname
, &dsize
))
652 dl
->size
= dsize
>> 9;
654 for (i
=0 ; i
< super
->max_part
; i
++)
658 for (i
=0; i
< __be16_to_cpu(super
->active
->max_pd_entries
); i
++)
659 if (memcmp(super
->phys
->entries
[i
].guid
,
660 dl
->disk
.guid
, DDF_GUID_LEN
) == 0)
663 /* Now the config list. */
664 /* 'conf' is an array of config entries, some of which are
665 * probably invalid. Those which are good need to be copied into
669 conf
= load_section(fd
, super
, NULL
,
670 super
->active
->config_section_offset
,
671 super
->active
->config_section_length
,
676 i
< __be32_to_cpu(super
->active
->config_section_length
);
677 i
+= super
->conf_rec_len
) {
678 struct vd_config
*vd
=
679 (struct vd_config
*)((char*)conf
+ i
*512);
682 if (vd
->magic
== DDF_SPARE_ASSIGN_MAGIC
) {
685 dl
->spare
= malloc(super
->conf_rec_len
*512);
686 memcpy(dl
->spare
, vd
, super
->conf_rec_len
*512);
689 if (vd
->magic
!= DDF_VD_CONF_MAGIC
)
691 for (vcl
= super
->conflist
; vcl
; vcl
= vcl
->next
) {
692 if (memcmp(vcl
->conf
.guid
,
693 vd
->guid
, DDF_GUID_LEN
) == 0)
698 dl
->vlist
[vnum
++] = vcl
;
699 if (__be32_to_cpu(vd
->seqnum
) <=
700 __be32_to_cpu(vcl
->conf
.seqnum
))
703 vcl
= malloc(super
->conf_rec_len
*512 +
704 offsetof(struct vcl
, conf
));
705 vcl
->next
= super
->conflist
;
706 vcl
->block_sizes
= NULL
; /* FIXME not for CONCAT */
707 super
->conflist
= vcl
;
708 dl
->vlist
[vnum
++] = vcl
;
710 memcpy(&vcl
->conf
, vd
, super
->conf_rec_len
*512);
711 vcl
->lba_offset
= (__u64
*)
712 &vcl
->conf
.phys_refnum
[super
->mppe
];
714 for (i
=0; i
< max_virt_disks
; i
++)
715 if (memcmp(super
->virt
->entries
[i
].guid
,
716 vcl
->conf
.guid
, DDF_GUID_LEN
)==0)
718 if (i
< max_virt_disks
)
727 static int load_super_ddf_all(struct supertype
*st
, int fd
,
728 void **sbp
, char *devname
, int keep_fd
);
730 static int load_super_ddf(struct supertype
*st
, int fd
,
733 unsigned long long dsize
;
734 struct ddf_super
*super
;
738 /* if 'fd' is a container, load metadata from all the devices */
739 if (load_super_ddf_all(st
, fd
, &st
->sb
, devname
, 1) == 0)
743 return 1; /* FIXME Is this correct */
745 if (get_dev_size(fd
, devname
, &dsize
) == 0)
748 /* 32M is a lower bound */
749 if (dsize
<= 32*1024*1024) {
752 Name
": %s is too small for ddf: "
753 "size is %llu sectors.\n",
761 Name
": %s is an odd size for ddf: "
762 "size is %llu bytes.\n",
768 super
= malloc(sizeof(*super
));
770 fprintf(stderr
, Name
": malloc of %zu failed.\n",
774 memset(super
, 0, sizeof(*super
));
776 rv
= load_ddf_headers(fd
, super
, devname
);
782 /* Have valid headers and have chosen the best. Let's read in the rest*/
784 rv
= load_ddf_global(fd
, super
, devname
);
789 Name
": Failed to load all information "
790 "sections on %s\n", devname
);
795 load_ddf_local(fd
, super
, devname
, 0);
797 /* Should possibly check the sections .... */
800 if (st
->ss
== NULL
) {
802 st
->minor_version
= 0;
809 static void free_super_ddf(struct supertype
*st
)
811 struct ddf_super
*ddf
= st
->sb
;
816 while (ddf
->conflist
) {
817 struct vcl
*v
= ddf
->conflist
;
818 ddf
->conflist
= v
->next
;
820 free(v
->block_sizes
);
824 struct dl
*d
= ddf
->dlist
;
825 ddf
->dlist
= d
->next
;
836 static struct supertype
*match_metadata_desc_ddf(char *arg
)
838 /* 'ddf' only support containers */
839 struct supertype
*st
;
840 if (strcmp(arg
, "ddf") != 0 &&
841 strcmp(arg
, "default") != 0
845 st
= malloc(sizeof(*st
));
846 memset(st
, 0, sizeof(*st
));
849 st
->minor_version
= 0;
857 static mapping_t ddf_state
[] = {
863 { "Partially Optimal", 5},
869 static mapping_t ddf_init_state
[] = {
870 { "Not Initialised", 0},
871 { "QuickInit in Progress", 1},
872 { "Fully Initialised", 2},
876 static mapping_t ddf_access
[] = {
880 { "Blocked (no access)", 3},
884 static mapping_t ddf_level
[] = {
885 { "RAID0", DDF_RAID0
},
886 { "RAID1", DDF_RAID1
},
887 { "RAID3", DDF_RAID3
},
888 { "RAID4", DDF_RAID4
},
889 { "RAID5", DDF_RAID5
},
890 { "RAID1E",DDF_RAID1E
},
892 { "CONCAT",DDF_CONCAT
},
893 { "RAID5E",DDF_RAID5E
},
894 { "RAID5EE",DDF_RAID5EE
},
895 { "RAID6", DDF_RAID6
},
898 static mapping_t ddf_sec_level
[] = {
899 { "Striped", DDF_2STRIPED
},
900 { "Mirrored", DDF_2MIRRORED
},
901 { "Concat", DDF_2CONCAT
},
902 { "Spanned", DDF_2SPANNED
},
910 static struct num_mapping ddf_level_num
[] = {
913 { DDF_RAID3
, LEVEL_UNSUPPORTED
},
916 { DDF_RAID1E
, LEVEL_UNSUPPORTED
},
917 { DDF_JBOD
, LEVEL_UNSUPPORTED
},
918 { DDF_CONCAT
, LEVEL_LINEAR
},
919 { DDF_RAID5E
, LEVEL_UNSUPPORTED
},
920 { DDF_RAID5EE
, LEVEL_UNSUPPORTED
},
925 static int map_num1(struct num_mapping
*map
, int num
)
928 for (i
=0 ; map
[i
].num1
!= MAXINT
; i
++)
929 if (map
[i
].num1
== num
)
935 static void print_guid(char *guid
, int tstamp
)
937 /* A GUIDs are part (or all) ASCII and part binary.
938 * They tend to be space padded.
939 * We print the GUID in HEX, then in parentheses add
940 * any initial ASCII sequence, and a possible
941 * time stamp from bytes 16-19
943 int l
= DDF_GUID_LEN
;
946 for (i
=0 ; i
<DDF_GUID_LEN
; i
++) {
947 if ((i
&3)==0 && i
!= 0) printf(":");
948 printf("%02X", guid
[i
]&255);
952 while (l
&& guid
[l
-1] == ' ')
954 for (i
=0 ; i
<l
; i
++) {
955 if (guid
[i
] >= 0x20 && guid
[i
] < 0x7f)
956 fputc(guid
[i
], stdout
);
961 time_t then
= __be32_to_cpu(*(__u32
*)(guid
+16)) + DECADE
;
964 tm
= localtime(&then
);
965 strftime(tbuf
, 100, " %D %T",tm
);
971 static void examine_vd(int n
, struct ddf_super
*sb
, char *guid
)
973 int crl
= sb
->conf_rec_len
;
976 for (vcl
= sb
->conflist
; vcl
; vcl
= vcl
->next
) {
977 struct vd_config
*vc
= &vcl
->conf
;
979 if (calc_crc(vc
, crl
*512) != vc
->crc
)
981 if (memcmp(vc
->guid
, guid
, DDF_GUID_LEN
) != 0)
984 /* Ok, we know about this VD, let's give more details */
985 printf(" Raid Devices[%d] : %d\n", n
,
986 __be16_to_cpu(vc
->prim_elmnt_count
));
987 printf(" Chunk Size[%d] : %d sectors\n", n
,
988 1 << vc
->chunk_shift
);
989 printf(" Raid Level[%d] : %s\n", n
,
990 map_num(ddf_level
, vc
->prl
)?:"-unknown-");
991 if (vc
->sec_elmnt_count
!= 1) {
992 printf(" Secondary Position[%d] : %d of %d\n", n
,
993 vc
->sec_elmnt_seq
, vc
->sec_elmnt_count
);
994 printf(" Secondary Level[%d] : %s\n", n
,
995 map_num(ddf_sec_level
, vc
->srl
) ?: "-unknown-");
997 printf(" Device Size[%d] : %llu\n", n
,
998 __be64_to_cpu(vc
->blocks
)/2);
999 printf(" Array Size[%d] : %llu\n", n
,
1000 __be64_to_cpu(vc
->array_blocks
)/2);
1004 static void examine_vds(struct ddf_super
*sb
)
1006 int cnt
= __be16_to_cpu(sb
->virt
->populated_vdes
);
1008 printf(" Virtual Disks : %d\n", cnt
);
1010 for (i
=0; i
<cnt
; i
++) {
1011 struct virtual_entry
*ve
= &sb
->virt
->entries
[i
];
1012 printf(" VD GUID[%d] : ", i
); print_guid(ve
->guid
, 1);
1014 printf(" unit[%d] : %d\n", i
, __be16_to_cpu(ve
->unit
));
1015 printf(" state[%d] : %s, %s%s\n", i
,
1016 map_num(ddf_state
, ve
->state
& 7),
1017 (ve
->state
& 8) ? "Morphing, ": "",
1018 (ve
->state
& 16)? "Not Consistent" : "Consistent");
1019 printf(" init state[%d] : %s\n", i
,
1020 map_num(ddf_init_state
, ve
->init_state
&3));
1021 printf(" access[%d] : %s\n", i
,
1022 map_num(ddf_access
, (ve
->init_state
>>6) & 3));
1023 printf(" Name[%d] : %.16s\n", i
, ve
->name
);
1024 examine_vd(i
, sb
, ve
->guid
);
1026 if (cnt
) printf("\n");
1029 static void examine_pds(struct ddf_super
*sb
)
1031 int cnt
= __be16_to_cpu(sb
->phys
->used_pdes
);
1034 printf(" Physical Disks : %d\n", cnt
);
1036 for (i
=0 ; i
<cnt
; i
++) {
1037 struct phys_disk_entry
*pd
= &sb
->phys
->entries
[i
];
1038 int type
= __be16_to_cpu(pd
->type
);
1039 int state
= __be16_to_cpu(pd
->state
);
1041 printf(" PD GUID[%d] : ", i
); print_guid(pd
->guid
, 0);
1043 printf(" ref[%d] : %08x\n", i
,
1044 __be32_to_cpu(pd
->refnum
));
1045 printf(" mode[%d] : %s%s%s%s%s\n", i
,
1046 (type
&2) ? "active":"",
1047 (type
&4) ? "Global Spare":"",
1048 (type
&8) ? "spare" : "",
1049 (type
&16)? ", foreign" : "",
1050 (type
&32)? "pass-through" : "");
1051 printf(" state[%d] : %s%s%s%s%s%s%s\n", i
,
1052 (state
&1)? "Online": "Offline",
1053 (state
&2)? ", Failed": "",
1054 (state
&4)? ", Rebuilding": "",
1055 (state
&8)? ", in-transition": "",
1056 (state
&16)? ", SMART errors": "",
1057 (state
&32)? ", Unrecovered Read Errors": "",
1058 (state
&64)? ", Missing" : "");
1059 printf(" Avail Size[%d] : %llu K\n", i
,
1060 __be64_to_cpu(pd
->config_size
)>>1);
1061 for (dl
= sb
->dlist
; dl
; dl
= dl
->next
) {
1062 if (dl
->disk
.refnum
== pd
->refnum
) {
1063 char *dv
= map_dev(dl
->major
, dl
->minor
, 0);
1065 printf(" Device[%d] : %s\n",
1073 static void examine_super_ddf(struct supertype
*st
, char *homehost
)
1075 struct ddf_super
*sb
= st
->sb
;
1077 printf(" Magic : %08x\n", __be32_to_cpu(sb
->anchor
.magic
));
1078 printf(" Version : %.8s\n", sb
->anchor
.revision
);
1079 printf("Controller GUID : "); print_guid(sb
->controller
.guid
, 0);
1081 printf(" Container GUID : "); print_guid(sb
->anchor
.guid
, 1);
1083 printf(" Seq : %08x\n", __be32_to_cpu(sb
->active
->seq
));
1084 printf(" Redundant hdr : %s\n", sb
->secondary
.magic
== DDF_HEADER_MAGIC
1090 static void brief_examine_super_ddf(struct supertype
*st
)
1092 /* We just write a generic DDF ARRAY entry
1093 * The uuid is all hex, 6 groups of 4 bytes
1095 struct ddf_super
*ddf
= st
->sb
;
1097 printf("ARRAY /dev/ddf metadata=ddf UUID=");
1098 for (i
= 0; i
< DDF_GUID_LEN
; i
++) {
1099 if ((i
&3) == 0 && i
!= 0)
1101 printf("%02X", 255&ddf
->anchor
.guid
[i
]);
1106 static void detail_super_ddf(struct supertype
*st
, char *homehost
)
1109 * Could print DDF GUID
1110 * Need to find which array
1111 * If whole, briefly list all arrays
1116 static void brief_detail_super_ddf(struct supertype
*st
)
1118 /* FIXME I really need to know which array we are detailing.
1119 * Can that be stored in ddf_super??
1121 // struct ddf_super *ddf = st->sb;
1125 static int match_home_ddf(struct supertype
*st
, char *homehost
)
1127 /* It matches 'this' host if the controller is a
1128 * Linux-MD controller with vendor_data matching
1131 struct ddf_super
*ddf
= st
->sb
;
1132 int len
= strlen(homehost
);
1134 return (memcmp(ddf
->controller
.guid
, T10
, 8) == 0 &&
1135 len
< sizeof(ddf
->controller
.vendor_data
) &&
1136 memcmp(ddf
->controller
.vendor_data
, homehost
,len
) == 0 &&
1137 ddf
->controller
.vendor_data
[len
] == 0);
1140 static struct vd_config
*find_vdcr(struct ddf_super
*ddf
, int inst
)
1144 for (v
= ddf
->conflist
; v
; v
= v
->next
)
1145 if (inst
== v
->vcnum
)
1150 static int find_phys(struct ddf_super
*ddf
, __u32 phys_refnum
)
1152 /* Find the entry in phys_disk which has the given refnum
1153 * and return it's index
1156 for (i
=0; i
< __be16_to_cpu(ddf
->phys
->max_pdes
); i
++)
1157 if (ddf
->phys
->entries
[i
].refnum
== phys_refnum
)
1162 static void uuid_from_super_ddf(struct supertype
*st
, int uuid
[4])
1164 /* The uuid returned here is used for:
1165 * uuid to put into bitmap file (Create, Grow)
1166 * uuid for backup header when saving critical section (Grow)
1167 * comparing uuids when re-adding a device into an array
1168 * For each of these we can make do with a truncated
1169 * or hashed uuid rather than the original, as long as
1171 * In each case the uuid required is that of the data-array,
1172 * not the device-set.
1173 * In the case of SVD we assume the BVD is of interest,
1174 * though that might be the case if a bitmap were made for
1175 * a mirrored SVD - worry about that later.
1176 * So we need to find the VD configuration record for the
1177 * relevant BVD and extract the GUID and Secondary_Element_Seq.
1178 * The first 16 bytes of the sha1 of these is used.
1180 struct ddf_super
*ddf
= st
->sb
;
1181 struct vcl
*vcl
= ddf
->currentconf
;
1184 memset(uuid
, 0, sizeof (uuid
));
1187 struct sha1_ctx ctx
;
1188 sha1_init_ctx(&ctx
);
1189 sha1_process_bytes(&vcl
->conf
.guid
, DDF_GUID_LEN
, &ctx
);
1190 if (vcl
->conf
.sec_elmnt_count
> 1)
1191 sha1_process_bytes(&vcl
->conf
.sec_elmnt_seq
, 1, &ctx
);
1192 sha1_finish_ctx(&ctx
, buf
);
1193 memcpy(uuid
, buf
, sizeof(uuid
));
1197 static void getinfo_super_ddf_bvd(struct supertype
*st
, struct mdinfo
*info
);
1199 static void getinfo_super_ddf(struct supertype
*st
, struct mdinfo
*info
)
1201 struct ddf_super
*ddf
= st
->sb
;
1203 if (ddf
->currentconf
) {
1204 getinfo_super_ddf_bvd(st
, info
);
1208 info
->array
.raid_disks
= __be16_to_cpu(ddf
->phys
->used_pdes
);
1209 info
->array
.level
= LEVEL_CONTAINER
;
1210 info
->array
.layout
= 0;
1211 info
->array
.md_minor
= -1;
1212 info
->array
.ctime
= DECADE
+ __be32_to_cpu(*(__u32
*)
1213 (ddf
->anchor
.guid
+16));
1214 info
->array
.utime
= 0;
1215 info
->array
.chunk_size
= 0;
1218 info
->disk
.major
= 0;
1219 info
->disk
.minor
= 0;
1221 info
->disk
.number
= __be32_to_cpu(ddf
->dlist
->disk
.refnum
);
1222 info
->disk
.raid_disk
= find_phys(ddf
, ddf
->dlist
->disk
.refnum
);
1224 info
->data_offset
= __be64_to_cpu(ddf
->phys
->
1225 entries
[info
->disk
.raid_disk
].
1227 info
->component_size
= ddf
->dlist
->size
- info
->data_offset
;
1229 info
->disk
.number
= -1;
1230 // info->disk.raid_disk = find refnum in the table and use index;
1232 info
->disk
.state
= (1 << MD_DISK_SYNC
);
1235 info
->reshape_active
= 0;
1237 strcpy(info
->text_version
, "ddf");
1239 // uuid_from_super_ddf(info->uuid, sbv);
1241 // info->name[] ?? ;
1244 static int rlq_to_layout(int rlq
, int prl
, int raiddisks
);
1246 static void getinfo_super_ddf_bvd(struct supertype
*st
, struct mdinfo
*info
)
1248 struct ddf_super
*ddf
= st
->sb
;
1249 struct vcl
*vc
= ddf
->currentconf
;
1250 int cd
= ddf
->currentdev
;
1252 /* FIXME this returns BVD info - what if we want SVD ?? */
1254 info
->array
.raid_disks
= __be16_to_cpu(vc
->conf
.prim_elmnt_count
);
1255 info
->array
.level
= map_num1(ddf_level_num
, vc
->conf
.prl
);
1256 info
->array
.layout
= rlq_to_layout(vc
->conf
.rlq
, vc
->conf
.prl
,
1257 info
->array
.raid_disks
);
1258 info
->array
.md_minor
= -1;
1259 info
->array
.ctime
= DECADE
+
1260 __be32_to_cpu(*(__u32
*)(vc
->conf
.guid
+16));
1261 info
->array
.utime
= DECADE
+ __be32_to_cpu(vc
->conf
.timestamp
);
1262 info
->array
.chunk_size
= 512 << vc
->conf
.chunk_shift
;
1264 if (cd
>= 0 && cd
< ddf
->mppe
) {
1265 info
->data_offset
= __be64_to_cpu(vc
->lba_offset
[cd
]);
1266 if (vc
->block_sizes
)
1267 info
->component_size
= vc
->block_sizes
[cd
];
1269 info
->component_size
= __be64_to_cpu(vc
->conf
.blocks
);
1272 info
->disk
.major
= 0;
1273 info
->disk
.minor
= 0;
1274 // info->disk.number = __be32_to_cpu(ddf->disk.refnum);
1275 // info->disk.raid_disk = find refnum in the table and use index;
1276 // info->disk.state = ???;
1278 info
->resync_start
= 0;
1279 if (!(ddf
->virt
->entries
[info
->container_member
].state
1280 & DDF_state_inconsistent
) &&
1281 (ddf
->virt
->entries
[info
->container_member
].init_state
1282 & DDF_initstate_mask
)
1284 info
->resync_start
= ~0ULL;
1286 uuid_from_super_ddf(st
, info
->uuid
);
1288 sprintf(info
->text_version
, "/%s/%d",
1289 devnum2devname(st
->container_dev
),
1290 info
->container_member
);
1292 // info->name[] ?? ;
1296 static int update_super_ddf(struct supertype
*st
, struct mdinfo
*info
,
1298 char *devname
, int verbose
,
1299 int uuid_set
, char *homehost
)
1301 /* For 'assemble' and 'force' we need to return non-zero if any
1302 * change was made. For others, the return value is ignored.
1303 * Update options are:
1304 * force-one : This device looks a bit old but needs to be included,
1305 * update age info appropriately.
1306 * assemble: clear any 'faulty' flag to allow this device to
1308 * force-array: Array is degraded but being forced, mark it clean
1309 * if that will be needed to assemble it.
1311 * newdev: not used ????
1312 * grow: Array has gained a new device - this is currently for
1314 * resync: mark as dirty so a resync will happen.
1315 * uuid: Change the uuid of the array to match what is given
1316 * homehost: update the recorded homehost
1317 * name: update the name - preserving the homehost
1318 * _reshape_progress: record new reshape_progress position.
1320 * Following are not relevant for this version:
1321 * sparc2.2 : update from old dodgey metadata
1322 * super-minor: change the preferred_minor number
1323 * summaries: update redundant counters.
1326 // struct ddf_super *ddf = st->sb;
1327 // struct vd_config *vd = find_vdcr(ddf, info->container_member);
1328 // struct virtual_entry *ve = find_ve(ddf);
1330 /* we don't need to handle "force-*" or "assemble" as
1331 * there is no need to 'trick' the kernel. We the metadata is
1332 * first updated to activate the array, all the implied modifications
1336 if (strcmp(update
, "grow") == 0) {
1339 if (strcmp(update
, "resync") == 0) {
1340 // info->resync_checkpoint = 0;
1342 /* We ignore UUID updates as they make even less sense
1345 if (strcmp(update
, "homehost") == 0) {
1346 /* homehost is stored in controller->vendor_data,
1347 * or it is when we are the vendor
1349 // if (info->vendor_is_local)
1350 // strcpy(ddf->controller.vendor_data, homehost);
1352 if (strcmp(update
, "name") == 0) {
1353 /* name is stored in virtual_entry->name */
1354 // memset(ve->name, ' ', 16);
1355 // strncpy(ve->name, info->name, 16);
1357 if (strcmp(update
, "_reshape_progress") == 0) {
1358 /* We don't support reshape yet */
1361 // update_all_csum(ddf);
1366 static void make_header_guid(char *guid
)
1370 /* Create a DDF Header of Virtual Disk GUID */
1372 /* 24 bytes of fiction required.
1373 * first 8 are a 'vendor-id' - "Linux-MD"
1374 * next 8 are controller type.. how about 0X DEAD BEEF 0000 0000
1375 * Remaining 8 random number plus timestamp
1377 memcpy(guid
, T10
, sizeof(T10
));
1378 stamp
= __cpu_to_be32(0xdeadbeef);
1379 memcpy(guid
+8, &stamp
, 4);
1380 stamp
= __cpu_to_be32(0);
1381 memcpy(guid
+12, &stamp
, 4);
1382 stamp
= __cpu_to_be32(time(0) - DECADE
);
1383 memcpy(guid
+16, &stamp
, 4);
1384 rfd
= open("/dev/urandom", O_RDONLY
);
1385 if (rfd
< 0 || read(rfd
, &stamp
, 4) != 4)
1387 memcpy(guid
+20, &stamp
, 4);
1388 if (rfd
>= 0) close(rfd
);
1391 static int init_super_ddf_bvd(struct supertype
*st
,
1392 mdu_array_info_t
*info
,
1393 unsigned long long size
,
1394 char *name
, char *homehost
,
1397 static int init_super_ddf(struct supertype
*st
,
1398 mdu_array_info_t
*info
,
1399 unsigned long long size
, char *name
, char *homehost
,
1402 /* This is primarily called by Create when creating a new array.
1403 * We will then get add_to_super called for each component, and then
1404 * write_init_super called to write it out to each device.
1405 * For DDF, Create can create on fresh devices or on a pre-existing
1407 * To create on a pre-existing array a different method will be called.
1408 * This one is just for fresh drives.
1410 * We need to create the entire 'ddf' structure which includes:
1411 * DDF headers - these are easy.
1412 * Controller data - a Sector describing this controller .. not that
1413 * this is a controller exactly.
1414 * Physical Disk Record - one entry per device, so
1415 * leave plenty of space.
1416 * Virtual Disk Records - again, just leave plenty of space.
1417 * This just lists VDs, doesn't give details
1418 * Config records - describes the VDs that use this disk
1419 * DiskData - describes 'this' device.
1420 * BadBlockManagement - empty
1421 * Diag Space - empty
1422 * Vendor Logs - Could we put bitmaps here?
1425 struct ddf_super
*ddf
;
1428 int max_phys_disks
, max_virt_disks
;
1429 unsigned long long sector
;
1433 struct phys_disk
*pd
;
1434 struct virtual_disk
*vd
;
1441 return init_super_ddf_bvd(st
, info
, size
, name
, homehost
,
1444 ddf
= malloc(sizeof(*ddf
));
1445 memset(ddf
, 0, sizeof(*ddf
));
1446 ddf
->dlist
= NULL
; /* no physical disks yet */
1447 ddf
->conflist
= NULL
; /* No virtual disks yet */
1449 /* At least 32MB *must* be reserved for the ddf. So let's just
1450 * start 32MB from the end, and put the primary header there.
1451 * Don't do secondary for now.
1452 * We don't know exactly where that will be yet as it could be
1453 * different on each device. To just set up the lengths.
1457 ddf
->anchor
.magic
= DDF_HEADER_MAGIC
;
1458 make_header_guid(ddf
->anchor
.guid
);
1460 memcpy(ddf
->anchor
.revision
, DDF_REVISION_2
, 8);
1461 ddf
->anchor
.seq
= __cpu_to_be32(1);
1462 ddf
->anchor
.timestamp
= __cpu_to_be32(time(0) - DECADE
);
1463 ddf
->anchor
.openflag
= 0xFF;
1464 ddf
->anchor
.foreignflag
= 0;
1465 ddf
->anchor
.enforcegroups
= 0; /* Is this best?? */
1466 ddf
->anchor
.pad0
= 0xff;
1467 memset(ddf
->anchor
.pad1
, 0xff, 12);
1468 memset(ddf
->anchor
.header_ext
, 0xff, 32);
1469 ddf
->anchor
.primary_lba
= ~(__u64
)0;
1470 ddf
->anchor
.secondary_lba
= ~(__u64
)0;
1471 ddf
->anchor
.type
= DDF_HEADER_ANCHOR
;
1472 memset(ddf
->anchor
.pad2
, 0xff, 3);
1473 ddf
->anchor
.workspace_len
= __cpu_to_be32(32768); /* Must be reserved */
1474 ddf
->anchor
.workspace_lba
= ~(__u64
)0; /* Put this at bottom
1475 of 32M reserved.. */
1476 max_phys_disks
= 1023; /* Should be enough */
1477 ddf
->anchor
.max_pd_entries
= __cpu_to_be16(max_phys_disks
);
1478 max_virt_disks
= 255;
1479 ddf
->anchor
.max_vd_entries
= __cpu_to_be16(max_virt_disks
); /* ?? */
1480 ddf
->anchor
.max_partitions
= __cpu_to_be16(64); /* ?? */
1483 ddf
->conf_rec_len
= 1 + ROUND_UP(ddf
->mppe
* (4+8), 512)/512;
1484 ddf
->anchor
.config_record_len
= __cpu_to_be16(ddf
->conf_rec_len
);
1485 ddf
->anchor
.max_primary_element_entries
= __cpu_to_be16(ddf
->mppe
);
1486 memset(ddf
->anchor
.pad3
, 0xff, 54);
1487 /* controller sections is one sector long immediately
1488 * after the ddf header */
1490 ddf
->anchor
.controller_section_offset
= __cpu_to_be32(sector
);
1491 ddf
->anchor
.controller_section_length
= __cpu_to_be32(1);
1494 /* phys is 8 sectors after that */
1495 pdsize
= ROUND_UP(sizeof(struct phys_disk
) +
1496 sizeof(struct phys_disk_entry
)*max_phys_disks
,
1498 switch(pdsize
/512) {
1499 case 2: case 8: case 32: case 128: case 512: break;
1502 ddf
->anchor
.phys_section_offset
= __cpu_to_be32(sector
);
1503 ddf
->anchor
.phys_section_length
=
1504 __cpu_to_be32(pdsize
/512); /* max_primary_element_entries/8 */
1505 sector
+= pdsize
/512;
1507 /* virt is another 32 sectors */
1508 vdsize
= ROUND_UP(sizeof(struct virtual_disk
) +
1509 sizeof(struct virtual_entry
) * max_virt_disks
,
1511 switch(vdsize
/512) {
1512 case 2: case 8: case 32: case 128: case 512: break;
1515 ddf
->anchor
.virt_section_offset
= __cpu_to_be32(sector
);
1516 ddf
->anchor
.virt_section_length
=
1517 __cpu_to_be32(vdsize
/512); /* max_vd_entries/8 */
1518 sector
+= vdsize
/512;
1520 clen
= ddf
->conf_rec_len
* (ddf
->max_part
+1);
1521 ddf
->anchor
.config_section_offset
= __cpu_to_be32(sector
);
1522 ddf
->anchor
.config_section_length
= __cpu_to_be32(clen
);
1525 ddf
->anchor
.data_section_offset
= __cpu_to_be32(sector
);
1526 ddf
->anchor
.data_section_length
= __cpu_to_be32(1);
1529 ddf
->anchor
.bbm_section_length
= __cpu_to_be32(0);
1530 ddf
->anchor
.bbm_section_offset
= __cpu_to_be32(0xFFFFFFFF);
1531 ddf
->anchor
.diag_space_length
= __cpu_to_be32(0);
1532 ddf
->anchor
.diag_space_offset
= __cpu_to_be32(0xFFFFFFFF);
1533 ddf
->anchor
.vendor_length
= __cpu_to_be32(0);
1534 ddf
->anchor
.vendor_offset
= __cpu_to_be32(0xFFFFFFFF);
1536 memset(ddf
->anchor
.pad4
, 0xff, 256);
1538 memcpy(&ddf
->primary
, &ddf
->anchor
, 512);
1539 memcpy(&ddf
->secondary
, &ddf
->anchor
, 512);
1541 ddf
->primary
.openflag
= 1; /* I guess.. */
1542 ddf
->primary
.type
= DDF_HEADER_PRIMARY
;
1544 ddf
->secondary
.openflag
= 1; /* I guess.. */
1545 ddf
->secondary
.type
= DDF_HEADER_SECONDARY
;
1547 ddf
->active
= &ddf
->primary
;
1549 ddf
->controller
.magic
= DDF_CONTROLLER_MAGIC
;
1551 /* 24 more bytes of fiction required.
1552 * first 8 are a 'vendor-id' - "Linux-MD"
1553 * Remaining 16 are serial number.... maybe a hostname would do?
1555 memcpy(ddf
->controller
.guid
, T10
, sizeof(T10
));
1556 gethostname(hostname
, sizeof(hostname
));
1557 hostname
[sizeof(hostname
) - 1] = 0;
1558 hostlen
= strlen(hostname
);
1559 memcpy(ddf
->controller
.guid
+ 24 - hostlen
, hostname
, hostlen
);
1560 for (i
= strlen(T10
) ; i
+hostlen
< 24; i
++)
1561 ddf
->controller
.guid
[i
] = ' ';
1563 ddf
->controller
.type
.vendor_id
= __cpu_to_be16(0xDEAD);
1564 ddf
->controller
.type
.device_id
= __cpu_to_be16(0xBEEF);
1565 ddf
->controller
.type
.sub_vendor_id
= 0;
1566 ddf
->controller
.type
.sub_device_id
= 0;
1567 memcpy(ddf
->controller
.product_id
, "What Is My PID??", 16);
1568 memset(ddf
->controller
.pad
, 0xff, 8);
1569 memset(ddf
->controller
.vendor_data
, 0xff, 448);
1571 pd
= ddf
->phys
= malloc(pdsize
);
1572 ddf
->pdsize
= pdsize
;
1574 memset(pd
, 0xff, pdsize
);
1575 memset(pd
, 0, sizeof(*pd
));
1576 pd
->magic
= DDF_PHYS_DATA_MAGIC
;
1577 pd
->used_pdes
= __cpu_to_be16(0);
1578 pd
->max_pdes
= __cpu_to_be16(max_phys_disks
);
1579 memset(pd
->pad
, 0xff, 52);
1581 vd
= ddf
->virt
= malloc(vdsize
);
1582 ddf
->vdsize
= vdsize
;
1583 memset(vd
, 0, vdsize
);
1584 vd
->magic
= DDF_VIRT_RECORDS_MAGIC
;
1585 vd
->populated_vdes
= __cpu_to_be16(0);
1586 vd
->max_vdes
= __cpu_to_be16(max_virt_disks
);
1587 memset(vd
->pad
, 0xff, 52);
1589 for (i
=0; i
<max_virt_disks
; i
++)
1590 memset(&vd
->entries
[i
], 0xff, sizeof(struct virtual_entry
));
1596 static int all_ff(char *guid
)
1599 for (i
= 0; i
< DDF_GUID_LEN
; i
++)
1600 if (guid
[i
] != (char)0xff)
1604 static int chunk_to_shift(int chunksize
)
1606 return ffs(chunksize
/512)-1;
1609 static int level_to_prl(int level
)
1612 case LEVEL_LINEAR
: return DDF_CONCAT
;
1613 case 0: return DDF_RAID0
;
1614 case 1: return DDF_RAID1
;
1615 case 4: return DDF_RAID4
;
1616 case 5: return DDF_RAID5
;
1617 case 6: return DDF_RAID6
;
1621 static int layout_to_rlq(int level
, int layout
, int raiddisks
)
1625 return DDF_RAID0_SIMPLE
;
1628 case 2: return DDF_RAID1_SIMPLE
;
1629 case 3: return DDF_RAID1_MULTI
;
1634 case 0: return DDF_RAID4_N
;
1640 case ALGORITHM_LEFT_ASYMMETRIC
:
1641 return DDF_RAID5_N_RESTART
;
1642 case ALGORITHM_RIGHT_ASYMMETRIC
:
1644 return DDF_RAID5_0_RESTART
;
1646 return DDF_RAID6_0_RESTART
;
1647 case ALGORITHM_LEFT_SYMMETRIC
:
1648 return DDF_RAID5_N_CONTINUE
;
1649 case ALGORITHM_RIGHT_SYMMETRIC
:
1650 return -1; /* not mentioned in standard */
1656 static int rlq_to_layout(int rlq
, int prl
, int raiddisks
)
1660 return 0; /* hopefully rlq == DDF_RAID0_SIMPLE */
1662 return 0; /* hopefully rlq == SIMPLE or MULTI depending
1670 return -1; /* FIXME this isn't checked */
1674 case DDF_RAID5_N_RESTART
:
1675 return ALGORITHM_LEFT_ASYMMETRIC
;
1676 case DDF_RAID5_0_RESTART
:
1677 return ALGORITHM_RIGHT_ASYMMETRIC
;
1678 case DDF_RAID5_N_CONTINUE
:
1679 return ALGORITHM_LEFT_SYMMETRIC
;
1685 case DDF_RAID5_N_RESTART
:
1686 return ALGORITHM_LEFT_ASYMMETRIC
;
1687 case DDF_RAID6_0_RESTART
:
1688 return ALGORITHM_RIGHT_ASYMMETRIC
;
1689 case DDF_RAID5_N_CONTINUE
:
1690 return ALGORITHM_LEFT_SYMMETRIC
;
1699 unsigned long long start
, size
;
1701 static int cmp_extent(const void *av
, const void *bv
)
1703 const struct extent
*a
= av
;
1704 const struct extent
*b
= bv
;
1705 if (a
->start
< b
->start
)
1707 if (a
->start
> b
->start
)
1712 static struct extent
*get_extents(struct ddf_super
*ddf
, struct dl
*dl
)
1714 /* find a list of used extents on the give physical device
1715 * (dnum) of the given ddf.
1716 * Return a malloced array of 'struct extent'
1718 FIXME ignore DDF_Legacy devices?
1725 rv
= malloc(sizeof(struct extent
) * (ddf
->max_part
+ 2));
1729 for (i
= 0; i
< ddf
->max_part
; i
++) {
1730 struct vcl
*v
= dl
->vlist
[i
];
1733 for (j
=0; j
< v
->conf
.prim_elmnt_count
; j
++)
1734 if (v
->conf
.phys_refnum
[j
] == dl
->disk
.refnum
) {
1735 /* This device plays role 'j' in 'v'. */
1736 rv
[n
].start
= __be64_to_cpu(v
->lba_offset
[j
]);
1737 rv
[n
].size
= __be64_to_cpu(v
->conf
.blocks
);
1742 qsort(rv
, n
, sizeof(*rv
), cmp_extent
);
1744 rv
[n
].start
= __be64_to_cpu(ddf
->phys
->entries
[dl
->pdnum
].config_size
);
1749 static int init_super_ddf_bvd(struct supertype
*st
,
1750 mdu_array_info_t
*info
,
1751 unsigned long long size
,
1752 char *name
, char *homehost
,
1755 /* We are creating a BVD inside a pre-existing container.
1756 * so st->sb is already set.
1757 * We need to create a new vd_config and a new virtual_entry
1759 struct ddf_super
*ddf
= st
->sb
;
1761 struct virtual_entry
*ve
;
1763 struct vd_config
*vc
;
1765 if (__be16_to_cpu(ddf
->virt
->populated_vdes
)
1766 >= __be16_to_cpu(ddf
->virt
->max_vdes
)) {
1767 fprintf(stderr
, Name
": This ddf already has the "
1768 "maximum of %d virtual devices\n",
1769 __be16_to_cpu(ddf
->virt
->max_vdes
));
1773 for (venum
= 0; venum
< __be16_to_cpu(ddf
->virt
->max_vdes
); venum
++)
1774 if (all_ff(ddf
->virt
->entries
[venum
].guid
))
1776 if (venum
== __be16_to_cpu(ddf
->virt
->max_vdes
)) {
1777 fprintf(stderr
, Name
": Cannot find spare slot for "
1778 "virtual disk - DDF is corrupt\n");
1781 ve
= &ddf
->virt
->entries
[venum
];
1783 /* A Virtual Disk GUID contains the T10 Vendor ID, controller type,
1784 * timestamp, random number
1786 make_header_guid(ve
->guid
);
1787 ve
->unit
= __cpu_to_be16(info
->md_minor
);
1789 ve
->guid_crc
= crc32(0, (unsigned char*)ddf
->anchor
.guid
, DDF_GUID_LEN
);
1791 ve
->state
= DDF_state_degraded
; /* Will be modified as devices are added */
1792 if (info
->state
& 1) /* clean */
1793 ve
->init_state
= DDF_init_full
;
1795 ve
->init_state
= DDF_init_not
;
1797 memset(ve
->pad1
, 0xff, 14);
1798 memset(ve
->name
, ' ', 16);
1800 strncpy(ve
->name
, name
, 16);
1801 ddf
->virt
->populated_vdes
=
1802 __cpu_to_be16(__be16_to_cpu(ddf
->virt
->populated_vdes
)+1);
1804 /* Now create a new vd_config */
1805 vcl
= malloc(offsetof(struct vcl
, conf
) + ddf
->conf_rec_len
* 512);
1806 vcl
->lba_offset
= (__u64
*) &vcl
->conf
.phys_refnum
[ddf
->mppe
];
1808 sprintf(st
->subarray
, "%d", venum
);
1809 vcl
->block_sizes
= NULL
; /* FIXME not for CONCAT */
1813 vc
->magic
= DDF_VD_CONF_MAGIC
;
1814 memcpy(vc
->guid
, ve
->guid
, DDF_GUID_LEN
);
1815 vc
->timestamp
= __cpu_to_be32(time(0)-DECADE
);
1816 vc
->seqnum
= __cpu_to_be32(1);
1817 memset(vc
->pad0
, 0xff, 24);
1818 vc
->prim_elmnt_count
= __cpu_to_be16(info
->raid_disks
);
1819 vc
->chunk_shift
= chunk_to_shift(info
->chunk_size
);
1820 vc
->prl
= level_to_prl(info
->level
);
1821 vc
->rlq
= layout_to_rlq(info
->level
, info
->layout
, info
->raid_disks
);
1822 vc
->sec_elmnt_count
= 1;
1823 vc
->sec_elmnt_seq
= 0;
1825 vc
->blocks
= __cpu_to_be64(info
->size
* 2);
1826 vc
->array_blocks
= __cpu_to_be64(
1827 calc_array_size(info
->level
, info
->raid_disks
, info
->layout
,
1828 info
->chunk_size
, info
->size
*2));
1829 memset(vc
->pad1
, 0xff, 8);
1830 vc
->spare_refs
[0] = 0xffffffff;
1831 vc
->spare_refs
[1] = 0xffffffff;
1832 vc
->spare_refs
[2] = 0xffffffff;
1833 vc
->spare_refs
[3] = 0xffffffff;
1834 vc
->spare_refs
[4] = 0xffffffff;
1835 vc
->spare_refs
[5] = 0xffffffff;
1836 vc
->spare_refs
[6] = 0xffffffff;
1837 vc
->spare_refs
[7] = 0xffffffff;
1838 memset(vc
->cache_pol
, 0, 8);
1840 memset(vc
->pad2
, 0xff, 3);
1841 memset(vc
->pad3
, 0xff, 52);
1842 memset(vc
->pad4
, 0xff, 192);
1843 memset(vc
->v0
, 0xff, 32);
1844 memset(vc
->v1
, 0xff, 32);
1845 memset(vc
->v2
, 0xff, 16);
1846 memset(vc
->v3
, 0xff, 16);
1847 memset(vc
->vendor
, 0xff, 32);
1849 memset(vc
->phys_refnum
, 0xff, 4*ddf
->mppe
);
1850 memset(vc
->phys_refnum
+(ddf
->mppe
* 4), 0x00, 8*ddf
->mppe
);
1852 vcl
->next
= ddf
->conflist
;
1853 ddf
->conflist
= vcl
;
1854 ddf
->currentconf
= vcl
;
1858 static void add_to_super_ddf_bvd(struct supertype
*st
,
1859 mdu_disk_info_t
*dk
, int fd
, char *devname
)
1861 /* fd and devname identify a device with-in the ddf container (st).
1862 * dk identifies a location in the new BVD.
1863 * We need to find suitable free space in that device and update
1864 * the phys_refnum and lba_offset for the newly created vd_config.
1865 * We might also want to update the type in the phys_disk
1869 struct ddf_super
*ddf
= st
->sb
;
1870 struct vd_config
*vc
;
1874 unsigned long long blocks
, pos
, esize
;
1877 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
1878 if (dl
->major
== dk
->major
&&
1879 dl
->minor
== dk
->minor
)
1881 if (!dl
|| ! (dk
->state
& (1<<MD_DISK_SYNC
)))
1884 vc
= &ddf
->currentconf
->conf
;
1885 lba_offset
= ddf
->currentconf
->lba_offset
;
1887 ex
= get_extents(ddf
, dl
);
1892 blocks
= __be64_to_cpu(vc
->blocks
);
1893 if (ddf
->currentconf
->block_sizes
)
1894 blocks
= ddf
->currentconf
->block_sizes
[dk
->raid_disk
];
1897 esize
= ex
[i
].start
- pos
;
1898 if (esize
>= blocks
)
1900 pos
= ex
[i
].start
+ ex
[i
].size
;
1902 } while (ex
[i
-1].size
);
1908 ddf
->currentdev
= dk
->raid_disk
;
1909 vc
->phys_refnum
[dk
->raid_disk
] = dl
->disk
.refnum
;
1910 lba_offset
[dk
->raid_disk
] = __cpu_to_be64(pos
);
1912 for (i
=0; i
< ddf
->max_part
; i
++)
1913 if (dl
->vlist
[i
] == NULL
)
1915 if (i
== ddf
->max_part
)
1917 dl
->vlist
[i
] = ddf
->currentconf
;
1920 dl
->devname
= devname
;
1922 /* Check how many working raid_disks, and if we can mark
1923 * array as optimal yet
1927 for (i
=0; i
< __be16_to_cpu(vc
->prim_elmnt_count
); i
++)
1928 if (vc
->phys_refnum
[i
] != 0xffffffff)
1931 /* Find which virtual_entry */
1932 i
= ddf
->currentconf
->vcnum
;
1933 if (working
== __be16_to_cpu(vc
->prim_elmnt_count
))
1934 ddf
->virt
->entries
[i
].state
=
1935 (ddf
->virt
->entries
[i
].state
& ~DDF_state_mask
)
1936 | DDF_state_optimal
;
1938 if (vc
->prl
== DDF_RAID6
&&
1939 working
+1 == __be16_to_cpu(vc
->prim_elmnt_count
))
1940 ddf
->virt
->entries
[i
].state
=
1941 (ddf
->virt
->entries
[i
].state
& ~DDF_state_mask
)
1942 | DDF_state_part_optimal
;
1944 ddf
->phys
->entries
[dl
->pdnum
].type
&= ~__cpu_to_be16(DDF_Global_Spare
);
1945 ddf
->phys
->entries
[dl
->pdnum
].type
|= __cpu_to_be16(DDF_Active_in_VD
);
1948 /* add a device to a container, either while creating it or while
1949 * expanding a pre-existing container
1951 static void add_to_super_ddf(struct supertype
*st
,
1952 mdu_disk_info_t
*dk
, int fd
, char *devname
)
1954 struct ddf_super
*ddf
= st
->sb
;
1958 unsigned long long size
;
1959 struct phys_disk_entry
*pde
;
1963 if (ddf
->currentconf
) {
1964 add_to_super_ddf_bvd(st
, dk
, fd
, devname
);
1968 /* This is device numbered dk->number. We need to create
1969 * a phys_disk entry and a more detailed disk_data entry.
1972 dd
= malloc(sizeof(*dd
) + sizeof(dd
->vlist
[0]) * ddf
->max_part
);
1973 dd
->major
= major(stb
.st_rdev
);
1974 dd
->minor
= minor(stb
.st_rdev
);
1975 dd
->devname
= devname
;
1976 dd
->next
= ddf
->dlist
;
1980 dd
->disk
.magic
= DDF_PHYS_DATA_MAGIC
;
1982 tm
= localtime(&now
);
1983 sprintf(dd
->disk
.guid
, "%8s%04d%02d%02d",
1984 T10
, tm
->tm_year
+1900, tm
->tm_mon
+1, tm
->tm_mday
);
1985 *(__u32
*)(dd
->disk
.guid
+ 16) = random();
1986 *(__u32
*)(dd
->disk
.guid
+ 20) = random();
1989 /* Cannot be bothered finding a CRC of some irrelevant details*/
1990 dd
->disk
.refnum
= random();
1991 for (i
= __be16_to_cpu(ddf
->active
->max_pd_entries
) - 1;
1993 if (ddf
->phys
->entries
[i
].refnum
== dd
->disk
.refnum
)
1997 dd
->disk
.forced_ref
= 1;
1998 dd
->disk
.forced_guid
= 1;
1999 memset(dd
->disk
.vendor
, ' ', 32);
2000 memcpy(dd
->disk
.vendor
, "Linux", 5);
2001 memset(dd
->disk
.pad
, 0xff, 442);
2002 for (i
= 0; i
< ddf
->max_part
; i
++)
2003 dd
->vlist
[i
] = NULL
;
2005 n
= __be16_to_cpu(ddf
->phys
->used_pdes
);
2006 pde
= &ddf
->phys
->entries
[n
];
2010 ddf
->phys
->used_pdes
= __cpu_to_be16(n
);
2012 memcpy(pde
->guid
, dd
->disk
.guid
, DDF_GUID_LEN
);
2013 pde
->refnum
= dd
->disk
.refnum
;
2014 pde
->type
= __cpu_to_be16(DDF_Forced_PD_GUID
| DDF_Global_Spare
);
2015 pde
->state
= __cpu_to_be16(DDF_Online
);
2016 get_dev_size(fd
, NULL
, &size
);
2017 /* We are required to reserve 32Meg, and record the size in sectors */
2018 pde
->config_size
= __cpu_to_be64( (size
- 32*1024*1024) / 512);
2019 sprintf(pde
->path
, "%17.17s","Information: nil") ;
2020 memset(pde
->pad
, 0xff, 6);
2022 dd
->size
= size
>> 9;
2027 * This is the write_init_super method for a ddf container. It is
2028 * called when creating a container or adding another device to a
2033 static int __write_init_super_ddf(struct supertype
*st
, int do_close
)
2036 struct ddf_super
*ddf
= st
->sb
;
2042 unsigned long long size
, sector
;
2044 for (d
= ddf
->dlist
; d
; d
=d
->next
) {
2050 /* We need to fill in the primary, (secondary) and workspace
2051 * lba's in the headers, set their checksums,
2052 * Also checksum phys, virt....
2054 * Then write everything out, finally the anchor is written.
2056 get_dev_size(fd
, NULL
, &size
);
2058 ddf
->anchor
.workspace_lba
= __cpu_to_be64(size
- 32*1024*2);
2059 ddf
->anchor
.primary_lba
= __cpu_to_be64(size
- 16*1024*2);
2060 ddf
->anchor
.seq
= __cpu_to_be32(1);
2061 memcpy(&ddf
->primary
, &ddf
->anchor
, 512);
2062 memcpy(&ddf
->secondary
, &ddf
->anchor
, 512);
2064 ddf
->anchor
.openflag
= 0xFF; /* 'open' means nothing */
2065 ddf
->anchor
.seq
= 0xFFFFFFFF; /* no sequencing in anchor */
2066 ddf
->anchor
.crc
= calc_crc(&ddf
->anchor
, 512);
2068 ddf
->primary
.openflag
= 0;
2069 ddf
->primary
.type
= DDF_HEADER_PRIMARY
;
2071 ddf
->secondary
.openflag
= 0;
2072 ddf
->secondary
.type
= DDF_HEADER_SECONDARY
;
2074 ddf
->primary
.crc
= calc_crc(&ddf
->primary
, 512);
2075 ddf
->secondary
.crc
= calc_crc(&ddf
->secondary
, 512);
2077 sector
= size
- 16*1024*2;
2078 lseek64(fd
, sector
<<9, 0);
2079 write(fd
, &ddf
->primary
, 512);
2081 ddf
->controller
.crc
= calc_crc(&ddf
->controller
, 512);
2082 write(fd
, &ddf
->controller
, 512);
2084 ddf
->phys
->crc
= calc_crc(ddf
->phys
, ddf
->pdsize
);
2086 write(fd
, ddf
->phys
, ddf
->pdsize
);
2088 ddf
->virt
->crc
= calc_crc(ddf
->virt
, ddf
->vdsize
);
2089 write(fd
, ddf
->virt
, ddf
->vdsize
);
2091 /* Now write lots of config records. */
2092 n_config
= ddf
->max_part
;
2093 conf_size
= ddf
->conf_rec_len
* 512;
2094 for (i
= 0 ; i
<= n_config
; i
++) {
2095 struct vcl
*c
= d
->vlist
[i
];
2097 c
= (struct vcl
*)d
->spare
;
2100 c
->conf
.crc
= calc_crc(&c
->conf
, conf_size
);
2101 write(fd
, &c
->conf
, conf_size
);
2103 __u32 sig
= 0xffffffff;
2105 lseek64(fd
, conf_size
-4, SEEK_CUR
);
2108 d
->disk
.crc
= calc_crc(&d
->disk
, 512);
2109 write(fd
, &d
->disk
, 512);
2111 /* Maybe do the same for secondary */
2113 lseek64(fd
, (size
-1)*512, SEEK_SET
);
2114 write(fd
, &ddf
->anchor
, 512);
2123 static int write_init_super_ddf(struct supertype
*st
)
2125 return __write_init_super_ddf(st
, 1);
2130 static __u64
avail_size_ddf(struct supertype
*st
, __u64 devsize
)
2132 /* We must reserve the last 32Meg */
2133 if (devsize
<= 32*1024*2)
2135 return devsize
- 32*1024*2;
2139 static int validate_geometry_ddf_container(struct supertype
*st
,
2140 int level
, int layout
, int raiddisks
,
2141 int chunk
, unsigned long long size
,
2142 char *dev
, unsigned long long *freesize
);
2144 static int validate_geometry_ddf_bvd(struct supertype
*st
,
2145 int level
, int layout
, int raiddisks
,
2146 int chunk
, unsigned long long size
,
2147 char *dev
, unsigned long long *freesize
);
2149 static int validate_geometry_ddf(struct supertype
*st
,
2150 int level
, int layout
, int raiddisks
,
2151 int chunk
, unsigned long long size
,
2152 char *dev
, unsigned long long *freesize
)
2158 /* ddf potentially supports lots of things, but it depends on
2159 * what devices are offered (and maybe kernel version?)
2160 * If given unused devices, we will make a container.
2161 * If given devices in a container, we will make a BVD.
2162 * If given BVDs, we make an SVD, changing all the GUIDs in the process.
2165 if (level
== LEVEL_CONTAINER
) {
2166 /* Must be a fresh device to add to a container */
2167 return validate_geometry_ddf_container(st
, level
, layout
,
2169 chunk
, size
, dev
, freesize
);
2173 /* A container has already been opened, so we are
2174 * creating in there. Maybe a BVD, maybe an SVD.
2175 * Should make a distinction one day.
2177 return validate_geometry_ddf_bvd(st
, level
, layout
, raiddisks
,
2178 chunk
, size
, dev
, freesize
);
2181 /* Initial sanity check. Exclude illegal levels. */
2183 for (i
=0; ddf_level_num
[i
].num1
!= MAXINT
; i
++)
2184 if (ddf_level_num
[i
].num2
== level
)
2186 if (ddf_level_num
[i
].num1
== MAXINT
)
2188 /* Should check layout? etc */
2192 /* This is the first device for the array.
2193 * If it is a container, we read it in and do automagic allocations,
2194 * no other devices should be given.
2195 * Otherwise it must be a member device of a container, and we
2196 * do manual allocation.
2197 * Later we should check for a BVD and make an SVD.
2199 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
2201 sra
= sysfs_read(fd
, 0, GET_VERSION
);
2203 if (sra
&& sra
->array
.major_version
== -1 &&
2204 strcmp(sra
->text_version
, "ddf") == 0) {
2207 /* find space for 'n' devices. */
2208 /* remember the devices */
2209 /* Somehow return the fact that we have enough */
2213 Name
": Cannot create this array on device %s\n",
2217 if (errno
!= EBUSY
|| (fd
= open(dev
, O_RDONLY
, 0)) < 0) {
2218 fprintf(stderr
, Name
": Cannot open %s: %s\n",
2219 dev
, strerror(errno
));
2222 /* Well, it is in use by someone, maybe a 'ddf' container. */
2223 cfd
= open_container(fd
);
2226 fprintf(stderr
, Name
": Cannot use %s: It is busy\n",
2230 sra
= sysfs_read(cfd
, 0, GET_VERSION
);
2232 if (sra
&& sra
->array
.major_version
== -1 &&
2233 strcmp(sra
->text_version
, "ddf") == 0) {
2234 /* This is a member of a ddf container. Load the container
2235 * and try to create a bvd
2237 struct ddf_super
*ddf
;
2238 if (load_super_ddf_all(st
, cfd
, (void **)&ddf
, NULL
, 1) == 0) {
2240 st
->container_dev
= fd2devnum(cfd
);
2242 return validate_geometry_ddf_bvd(st
, level
, layout
,
2243 raiddisks
, chunk
, size
,
2247 } else /* device may belong to a different container */
2253 static int validate_geometry_ddf_container(struct supertype
*st
,
2254 int level
, int layout
, int raiddisks
,
2255 int chunk
, unsigned long long size
,
2256 char *dev
, unsigned long long *freesize
)
2259 unsigned long long ldsize
;
2261 if (level
!= LEVEL_CONTAINER
)
2266 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
2268 fprintf(stderr
, Name
": Cannot open %s: %s\n",
2269 dev
, strerror(errno
));
2272 if (!get_dev_size(fd
, dev
, &ldsize
)) {
2278 *freesize
= avail_size_ddf(st
, ldsize
>> 9);
2283 static int validate_geometry_ddf_bvd(struct supertype
*st
,
2284 int level
, int layout
, int raiddisks
,
2285 int chunk
, unsigned long long size
,
2286 char *dev
, unsigned long long *freesize
)
2289 struct ddf_super
*ddf
= st
->sb
;
2291 unsigned long long pos
= 0;
2292 unsigned long long maxsize
;
2295 /* ddf/bvd supports lots of things, but not containers */
2296 if (level
== LEVEL_CONTAINER
)
2298 /* We must have the container info already read in. */
2303 /* General test: make sure there is space for
2304 * 'raiddisks' device extents of size 'size'.
2306 unsigned long long minsize
= size
;
2310 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
2316 e
= get_extents(ddf
, dl
);
2319 unsigned long long esize
;
2320 esize
= e
[i
].start
- pos
;
2321 if (esize
>= minsize
)
2323 pos
= e
[i
].start
+ e
[i
].size
;
2325 } while (e
[i
-1].size
);
2330 if (dcnt
< raiddisks
) {
2331 fprintf(stderr
, Name
": Not enough devices with space "
2332 "for this array (%d < %d)\n",
2338 /* This device must be a member of the set */
2339 if (stat(dev
, &stb
) < 0)
2341 if ((S_IFMT
& stb
.st_mode
) != S_IFBLK
)
2343 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
) {
2344 if (dl
->major
== major(stb
.st_rdev
) &&
2345 dl
->minor
== minor(stb
.st_rdev
))
2349 fprintf(stderr
, Name
": %s is not in the same DDF set\n",
2353 e
= get_extents(ddf
, dl
);
2357 unsigned long long esize
;
2358 esize
= e
[i
].start
- pos
;
2359 if (esize
>= maxsize
)
2361 pos
= e
[i
].start
+ e
[i
].size
;
2363 } while (e
[i
-1].size
);
2364 *freesize
= maxsize
;
2370 static int load_super_ddf_all(struct supertype
*st
, int fd
,
2371 void **sbp
, char *devname
, int keep_fd
)
2374 struct ddf_super
*super
;
2375 struct mdinfo
*sd
, *best
= NULL
;
2381 sra
= sysfs_read(fd
, 0, GET_LEVEL
|GET_VERSION
|GET_DEVS
|GET_STATE
);
2384 if (sra
->array
.major_version
!= -1 ||
2385 sra
->array
.minor_version
!= -2 ||
2386 strcmp(sra
->text_version
, "ddf") != 0)
2389 super
= malloc(sizeof(*super
));
2392 memset(super
, 0, sizeof(*super
));
2394 /* first, try each device, and choose the best ddf */
2395 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
2397 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
2398 dfd
= dev_open(nm
, O_RDONLY
);
2401 rv
= load_ddf_headers(dfd
, super
, NULL
);
2404 seq
= __be32_to_cpu(super
->active
->seq
);
2405 if (super
->active
->openflag
)
2407 if (!best
|| seq
> bestseq
) {
2415 /* OK, load this ddf */
2416 sprintf(nm
, "%d:%d", best
->disk
.major
, best
->disk
.minor
);
2417 dfd
= dev_open(nm
, O_RDONLY
);
2420 load_ddf_headers(dfd
, super
, NULL
);
2421 load_ddf_global(dfd
, super
, NULL
);
2423 /* Now we need the device-local bits */
2424 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
2425 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
2426 dfd
= dev_open(nm
, keep_fd
? O_RDWR
: O_RDONLY
);
2429 seq
= load_ddf_local(dfd
, super
, NULL
, keep_fd
);
2430 if (!keep_fd
) close(dfd
);
2432 if (st
->subarray
[0]) {
2435 for (v
= super
->conflist
; v
; v
= v
->next
)
2436 if (v
->vcnum
== atoi(st
->subarray
))
2437 super
->currentconf
= v
;
2438 if (!super
->currentconf
)
2442 if (st
->ss
== NULL
) {
2443 st
->ss
= &super_ddf
;
2444 st
->minor_version
= 0;
2446 st
->container_dev
= fd2devnum(fd
);
2452 static struct mdinfo
*container_content_ddf(struct supertype
*st
)
2454 /* Given a container loaded by load_super_ddf_all,
2455 * extract information about all the arrays into
2458 * For each vcl in conflist: create an mdinfo, fill it in,
2459 * then look for matching devices (phys_refnum) in dlist
2460 * and create appropriate device mdinfo.
2462 struct ddf_super
*ddf
= st
->sb
;
2463 struct mdinfo
*rest
= NULL
;
2466 for (vc
= ddf
->conflist
; vc
; vc
=vc
->next
)
2469 struct mdinfo
*this;
2470 this = malloc(sizeof(*this));
2471 memset(this, 0, sizeof(*this));
2475 this->array
.level
= map_num1(ddf_level_num
, vc
->conf
.prl
);
2476 this->array
.raid_disks
=
2477 __be16_to_cpu(vc
->conf
.prim_elmnt_count
);
2478 this->array
.layout
= rlq_to_layout(vc
->conf
.rlq
, vc
->conf
.prl
,
2479 this->array
.raid_disks
);
2480 this->array
.md_minor
= -1;
2481 this->array
.ctime
= DECADE
+
2482 __be32_to_cpu(*(__u32
*)(vc
->conf
.guid
+16));
2483 this->array
.utime
= DECADE
+
2484 __be32_to_cpu(vc
->conf
.timestamp
);
2485 this->array
.chunk_size
= 512 << vc
->conf
.chunk_shift
;
2488 if ((ddf
->virt
->entries
[i
].state
& DDF_state_inconsistent
) ||
2489 (ddf
->virt
->entries
[i
].init_state
& DDF_initstate_mask
) !=
2491 this->array
.state
= 0;
2492 this->resync_start
= 0;
2494 this->array
.state
= 1;
2495 this->resync_start
= ~0ULL;
2497 memcpy(this->name
, ddf
->virt
->entries
[i
].name
, 32);
2500 memset(this->uuid
, 0, sizeof(this->uuid
));
2501 this->component_size
= __be64_to_cpu(vc
->conf
.blocks
);
2502 this->array
.size
= this->component_size
/ 2;
2503 this->container_member
= i
;
2505 sprintf(this->text_version
, "/%s/%d",
2506 devnum2devname(st
->container_dev
),
2507 this->container_member
);
2509 for (i
=0 ; i
< ddf
->mppe
; i
++) {
2513 if (vc
->conf
.phys_refnum
[i
] == 0xFFFFFFFF)
2516 this->array
.working_disks
++;
2518 for (d
= ddf
->dlist
; d
; d
=d
->next
)
2519 if (d
->disk
.refnum
== vc
->conf
.phys_refnum
[i
])
2524 dev
= malloc(sizeof(*dev
));
2525 memset(dev
, 0, sizeof(*dev
));
2526 dev
->next
= this->devs
;
2529 dev
->disk
.number
= __be32_to_cpu(d
->disk
.refnum
);
2530 dev
->disk
.major
= d
->major
;
2531 dev
->disk
.minor
= d
->minor
;
2532 dev
->disk
.raid_disk
= i
;
2533 dev
->disk
.state
= (1<<MD_DISK_SYNC
)|(1<<MD_DISK_ACTIVE
);
2535 dev
->events
= __le32_to_cpu(ddf
->primary
.seq
);
2536 dev
->data_offset
= vc
->lba_offset
[i
];
2537 dev
->component_size
= __be64_to_cpu(vc
->conf
.blocks
);
2539 strcpy(dev
->name
, d
->devname
);
2545 static int store_zero_ddf(struct supertype
*st
, int fd
)
2547 unsigned long long dsize
;
2549 memset(buf
, 0, 512);
2551 if (!get_dev_size(fd
, NULL
, &dsize
))
2554 lseek64(fd
, dsize
-512, 0);
2555 write(fd
, buf
, 512);
2559 static int compare_super_ddf(struct supertype
*st
, struct supertype
*tst
)
2563 * 0 same, or first was empty, and second was copied
2564 * 1 second had wrong number
2566 * 3 wrong other info
2568 struct ddf_super
*first
= st
->sb
;
2569 struct ddf_super
*second
= tst
->sb
;
2577 if (memcmp(first
->anchor
.guid
, second
->anchor
.guid
, DDF_GUID_LEN
) != 0)
2580 /* FIXME should I look at anything else? */
2585 * A new array 'a' has been started which claims to be instance 'inst'
2586 * within container 'c'.
2587 * We need to confirm that the array matches the metadata in 'c' so
2588 * that we don't corrupt any metadata.
2590 static int ddf_open_new(struct supertype
*c
, struct active_array
*a
, char *inst
)
2592 fprintf(stderr
, "ddf: open_new %s\n", inst
);
2593 a
->info
.container_member
= atoi(inst
);
2598 * The array 'a' is to be marked clean in the metadata.
2599 * If '->resync_start' is not ~(unsigned long long)0, then the array is only
2600 * clean up to the point (in sectors). If that cannot be recorded in the
2601 * metadata, then leave it as dirty.
2603 * For DDF, we need to clear the DDF_state_inconsistent bit in the
2604 * !global! virtual_disk.virtual_entry structure.
2606 static void ddf_set_array_state(struct active_array
*a
, int consistent
)
2608 struct ddf_super
*ddf
= a
->container
->sb
;
2609 int inst
= a
->info
.container_member
;
2611 ddf
->virt
->entries
[inst
].state
&= ~DDF_state_inconsistent
;
2613 ddf
->virt
->entries
[inst
].state
|= DDF_state_inconsistent
;
2614 ddf
->virt
->entries
[inst
].init_state
&= ~DDF_initstate_mask
;
2615 if (a
->resync_start
== ~0ULL)
2616 ddf
->virt
->entries
[inst
].init_state
|= DDF_init_full
;
2617 else if (a
->resync_start
== 0)
2618 ddf
->virt
->entries
[inst
].init_state
|= DDF_init_not
;
2620 ddf
->virt
->entries
[inst
].init_state
|= DDF_init_quick
;
2622 printf("ddf mark %s %llu\n", consistent
?"clean":"dirty",
2627 * The state of each disk is stored in the global phys_disk structure
2628 * in phys_disk.entries[n].state.
2629 * This makes various combinations awkward.
2630 * - When a device fails in any array, it must be failed in all arrays
2631 * that include a part of this device.
2632 * - When a component is rebuilding, we cannot include it officially in the
2633 * array unless this is the only array that uses the device.
2635 * So: when transitioning:
2636 * Online -> failed, just set failed flag. monitor will propagate
2637 * spare -> online, the device might need to be added to the array.
2638 * spare -> failed, just set failed. Don't worry if in array or not.
2640 static void ddf_set_disk(struct active_array
*a
, int n
, int state
)
2642 struct ddf_super
*ddf
= a
->container
->sb
;
2643 int inst
= a
->info
.container_member
;
2644 struct vd_config
*vc
= find_vdcr(ddf
, inst
);
2645 int pd
= find_phys(ddf
, vc
->phys_refnum
[n
]);
2649 fprintf(stderr
, "ddf: cannot find instance %d!!\n", inst
);
2653 /* disk doesn't currently exist. If it is now in_sync,
2655 if ((state
& DS_INSYNC
) && ! (state
& DS_FAULTY
)) {
2656 /* Find dev 'n' in a->info->devs, determine the
2657 * ddf refnum, and set vc->phys_refnum and update
2663 if (state
& DS_FAULTY
)
2664 ddf
->phys
->entries
[pd
].state
|= __cpu_to_be16(DDF_Failed
);
2665 if (state
& DS_INSYNC
) {
2666 ddf
->phys
->entries
[pd
].state
|= __cpu_to_be16(DDF_Online
);
2667 ddf
->phys
->entries
[pd
].state
&= __cpu_to_be16(~DDF_Rebuilding
);
2671 fprintf(stderr
, "ddf: set_disk %d to %x\n", n
, state
);
2673 /* Now we need to check the state of the array and update
2674 * virtual_disk.entries[n].state.
2675 * It needs to be one of "optimal", "degraded", "failed".
2676 * I don't understand 'deleted' or 'missing'.
2679 for (i
=0; i
< a
->info
.array
.raid_disks
; i
++) {
2680 pd
= find_phys(ddf
, vc
->phys_refnum
[i
]);
2683 st
= __be16_to_cpu(ddf
->phys
->entries
[pd
].state
);
2684 if ((st
& (DDF_Online
|DDF_Failed
|DDF_Rebuilding
))
2688 state
= DDF_state_degraded
;
2689 if (working
== a
->info
.array
.raid_disks
)
2690 state
= DDF_state_optimal
;
2691 else switch(vc
->prl
) {
2695 state
= DDF_state_failed
;
2699 state
= DDF_state_failed
;
2703 if (working
< a
->info
.array
.raid_disks
-1)
2704 state
= DDF_state_failed
;
2707 if (working
< a
->info
.array
.raid_disks
-2)
2708 state
= DDF_state_failed
;
2709 else if (working
== a
->info
.array
.raid_disks
-1)
2710 state
= DDF_state_part_optimal
;
2714 ddf
->virt
->entries
[inst
].state
=
2715 (ddf
->virt
->entries
[inst
].state
& ~DDF_state_mask
)
2720 static void ddf_sync_metadata(struct supertype
*st
)
2724 * Write all data to all devices.
2725 * Later, we might be able to track whether only local changes
2726 * have been made, or whether any global data has been changed,
2727 * but ddf is sufficiently weird that it probably always
2728 * changes global data ....
2730 __write_init_super_ddf(st
, 0);
2731 fprintf(stderr
, "ddf: sync_metadata\n");
2734 static void ddf_process_update(struct supertype
*st
,
2735 struct metadata_update
*update
)
2737 /* Apply this update to the metadata.
2738 * The first 4 bytes are a DDF_*_MAGIC which guides
2740 * Possible update are:
2741 * DDF_PHYS_RECORDS_MAGIC
2742 * Add a new physical device. Changes to this record
2743 * only happen implicitly.
2744 * used_pdes is the device number.
2745 * DDF_VIRT_RECORDS_MAGIC
2746 * Add a new VD. Possibly also change the 'access' bits.
2747 * populated_vdes is the entry number.
2749 * New or updated VD. the VIRT_RECORD must already
2750 * exist. For an update, phys_refnum and lba_offset
2751 * (at least) are updated, and the VD_CONF must
2752 * be written to precisely those devices listed with
2754 * DDF_SPARE_ASSIGN_MAGIC
2755 * replacement Spare Assignment Record... but for which device?
2758 * - to create a new array, we send a VIRT_RECORD and
2759 * a VD_CONF. Then assemble and start the array.
2760 * - to activate a spare we send a VD_CONF to add the phys_refnum
2761 * and offset. This will also mark the spare as active with
2762 * a spare-assignment record.
2764 struct ddf_super
*ddf
= st
->sb
;
2765 __u32
*magic
= (__u32
*)update
->buf
;
2766 struct phys_disk
*pd
;
2767 struct virtual_disk
*vd
;
2768 struct vd_config
*vc
;
2774 printf("Process update %x\n", *magic
);
2777 case DDF_PHYS_RECORDS_MAGIC
:
2779 if (update
->len
!= (sizeof(struct phys_disk
) +
2780 sizeof(struct phys_disk_entry
)))
2782 pd
= (struct phys_disk
*)update
->buf
;
2784 ent
= __be16_to_cpu(pd
->used_pdes
);
2785 if (ent
>= __be16_to_cpu(ddf
->phys
->max_pdes
))
2787 if (!all_ff(ddf
->phys
->entries
[ent
].guid
))
2789 ddf
->phys
->entries
[ent
] = pd
->entries
[0];
2790 ddf
->phys
->used_pdes
= __cpu_to_be16(1 +
2791 __be16_to_cpu(ddf
->phys
->used_pdes
));
2794 case DDF_VIRT_RECORDS_MAGIC
:
2796 if (update
->len
!= (sizeof(struct virtual_disk
) +
2797 sizeof(struct virtual_entry
)))
2799 vd
= (struct virtual_disk
*)update
->buf
;
2801 ent
= __be16_to_cpu(vd
->populated_vdes
);
2802 if (ent
>= __be16_to_cpu(ddf
->virt
->max_vdes
))
2804 if (!all_ff(ddf
->virt
->entries
[ent
].guid
))
2806 ddf
->virt
->entries
[ent
] = vd
->entries
[0];
2807 ddf
->virt
->populated_vdes
= __cpu_to_be16(1 +
2808 __be16_to_cpu(ddf
->virt
->populated_vdes
));
2811 case DDF_VD_CONF_MAGIC
:
2812 printf("len %d %d\n", update
->len
, ddf
->conf_rec_len
);
2814 mppe
= __be16_to_cpu(ddf
->anchor
.max_primary_element_entries
);
2815 if (update
->len
!= ddf
->conf_rec_len
)
2817 vc
= (struct vd_config
*)update
->buf
;
2818 for (vcl
= ddf
->conflist
; vcl
; vcl
= vcl
->next
)
2819 if (memcmp(vcl
->conf
.guid
, vc
->guid
, DDF_GUID_LEN
) == 0)
2821 printf("vcl = %p\n", vcl
);
2823 /* An update, just copy the phys_refnum and lba_offset
2826 memcpy(vcl
->conf
.phys_refnum
, vc
->phys_refnum
,
2827 mppe
* (sizeof(__u32
) + sizeof(__u64
)));
2830 vcl
= update
->space
;
2831 update
->space
= NULL
;
2832 vcl
->next
= ddf
->conflist
;
2834 vcl
->lba_offset
= (__u64
*)
2835 &vcl
->conf
.phys_refnum
[mppe
];
2836 ddf
->conflist
= vcl
;
2838 /* Now make sure vlist is correct for each dl. */
2839 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
) {
2842 for (vcl
= ddf
->conflist
; vcl
; vcl
= vcl
->next
)
2843 for (dn
=0; dn
< ddf
->mppe
; dn
++)
2844 if (vcl
->conf
.phys_refnum
[dn
] ==
2846 printf("dev %d has %p at %d\n",
2847 dl
->pdnum
, vcl
, vn
);
2848 dl
->vlist
[vn
++] = vcl
;
2851 while (vn
< ddf
->max_part
)
2852 dl
->vlist
[vn
++] = NULL
;
2854 ddf
->phys
->entries
[dl
->pdnum
].type
&=
2855 ~__cpu_to_be16(DDF_Global_Spare
);
2856 ddf
->phys
->entries
[dl
->pdnum
].type
|=
2857 __cpu_to_be16(DDF_Active_in_VD
);
2860 ddf
->phys
->entries
[dl
->pdnum
].type
&=
2861 ~__cpu_to_be16(DDF_Global_Spare
);
2862 ddf
->phys
->entries
[dl
->pdnum
].type
|=
2863 __cpu_to_be16(DDF_Spare
);
2865 if (!dl
->vlist
[0] && !dl
->spare
) {
2866 ddf
->phys
->entries
[dl
->pdnum
].type
|=
2867 __cpu_to_be16(DDF_Global_Spare
);
2868 ddf
->phys
->entries
[dl
->pdnum
].type
&=
2869 ~__cpu_to_be16(DDF_Spare
|
2874 case DDF_SPARE_ASSIGN_MAGIC
:
2880 * Check if the array 'a' is degraded but not failed.
2881 * If it is, find as many spares as are available and needed and
2882 * arrange for their inclusion.
2883 * We only choose devices which are not already in the array,
2884 * and prefer those with a spare-assignment to this array.
2885 * otherwise we choose global spares - assuming always that
2886 * there is enough room.
2887 * For each spare that we assign, we return an 'mdinfo' which
2888 * describes the position for the device in the array.
2889 * We also add to 'updates' a DDF_VD_CONF_MAGIC update with
2890 * the new phys_refnum and lba_offset values.
2892 * Only worry about BVDs at the moment.
2894 static struct mdinfo
*ddf_activate_spare(struct active_array
*a
,
2895 struct metadata_update
**updates
)
2899 struct ddf_super
*ddf
= a
->container
->sb
;
2901 struct mdinfo
*rv
= NULL
;
2903 struct metadata_update
*mu
;
2906 struct vd_config
*vc
;
2909 for (d
= a
->info
.devs
; d
; d
= d
->next
) {
2910 if ((d
->curr_state
& DS_FAULTY
) &&
2912 /* wait for Removal to happen */
2914 if (d
->state_fd
>= 0)
2918 printf("ddf_activate: working=%d (%d) level=%d\n", working
, a
->info
.array
.raid_disks
,
2919 a
->info
.array
.level
);
2920 if (working
== a
->info
.array
.raid_disks
)
2921 return NULL
; /* array not degraded */
2922 switch (a
->info
.array
.level
) {
2925 return NULL
; /* failed */
2929 if (working
< a
->info
.array
.raid_disks
- 1)
2930 return NULL
; /* failed */
2933 if (working
< a
->info
.array
.raid_disks
- 2)
2934 return NULL
; /* failed */
2936 default: /* concat or stripe */
2937 return NULL
; /* failed */
2940 /* For each slot, if it is not working, find a spare */
2942 for (i
= 0; i
< a
->info
.array
.raid_disks
; i
++) {
2943 for (d
= a
->info
.devs
; d
; d
= d
->next
)
2944 if (d
->disk
.raid_disk
== i
)
2946 printf("found %d: %p %x\n", i
, d
, d
?d
->curr_state
:0);
2947 if (d
&& (d
->state_fd
>= 0))
2950 /* OK, this device needs recovery. Find a spare */
2952 for ( ; dl
; dl
= dl
->next
) {
2953 unsigned long long esize
;
2954 unsigned long long pos
;
2957 int is_dedicated
= 0;
2960 /* If in this array, skip */
2961 for (d2
= a
->info
.devs
; d2
; d2
= d2
->next
)
2962 if (d2
->disk
.major
== dl
->major
&&
2963 d2
->disk
.minor
== dl
->minor
) {
2964 printf("%x:%x already in array\n", dl
->major
, dl
->minor
);
2969 if (ddf
->phys
->entries
[dl
->pdnum
].type
&
2970 __cpu_to_be16(DDF_Spare
)) {
2971 /* Check spare assign record */
2973 if (dl
->spare
->type
& DDF_spare_dedicated
) {
2974 /* check spare_ents for guid */
2976 j
< __be16_to_cpu(dl
->spare
->populated
);
2978 if (memcmp(dl
->spare
->spare_ents
[j
].guid
,
2979 ddf
->virt
->entries
[a
->info
.container_member
].guid
,
2986 } else if (ddf
->phys
->entries
[dl
->pdnum
].type
&
2987 __cpu_to_be16(DDF_Global_Spare
)) {
2990 if ( ! (is_dedicated
||
2991 (is_global
&& global_ok
))) {
2992 printf("%x:%x not suitable: %d %d\n", dl
->major
, dl
->minor
,
2993 is_dedicated
, is_global
);
2997 /* We are allowed to use this device - is there space?
2998 * We need a->info.component_size sectors */
2999 ex
= get_extents(ddf
, dl
);
3001 printf("cannot get extents\n");
3008 esize
= ex
[j
].start
- pos
;
3009 if (esize
>= a
->info
.component_size
)
3011 pos
= ex
[i
].start
+ ex
[i
].size
;
3013 } while (ex
[i
-1].size
);
3016 if (esize
< a
->info
.component_size
) {
3017 printf("%x:%x has no room: %llu %llu\n", dl
->major
, dl
->minor
,
3018 esize
, a
->info
.component_size
);
3023 /* Cool, we have a device with some space at pos */
3024 di
= malloc(sizeof(*di
));
3025 memset(di
, 0, sizeof(*di
));
3026 di
->disk
.number
= i
;
3027 di
->disk
.raid_disk
= i
;
3028 di
->disk
.major
= dl
->major
;
3029 di
->disk
.minor
= dl
->minor
;
3031 di
->data_offset
= pos
;
3032 di
->component_size
= a
->info
.component_size
;
3033 di
->container_member
= dl
->pdnum
;
3036 printf("%x:%x to be %d at %llu\n", dl
->major
, dl
->minor
,
3041 if (!dl
&& ! global_ok
) {
3042 /* not enough dedicated spares, try global */
3050 /* No spares found */
3052 /* Now 'rv' has a list of devices to return.
3053 * Create a metadata_update record to update the
3054 * phys_refnum and lba_offset values
3056 mu
= malloc(sizeof(*mu
));
3057 mu
->buf
= malloc(ddf
->conf_rec_len
* 512);
3058 mu
->space
= malloc(sizeof(struct vcl
));
3059 mu
->len
= ddf
->conf_rec_len
;
3060 mu
->next
= *updates
;
3061 vc
= find_vdcr(ddf
, a
->info
.container_member
);
3062 memcpy(mu
->buf
, vc
, ddf
->conf_rec_len
* 512);
3064 vc
= (struct vd_config
*)mu
->buf
;
3065 lba
= (__u64
*)&vc
->phys_refnum
[ddf
->mppe
];
3066 for (di
= rv
; di
; di
= di
->next
) {
3067 vc
->phys_refnum
[di
->disk
.raid_disk
] =
3068 ddf
->phys
->entries
[dl
->pdnum
].refnum
;
3069 lba
[di
->disk
.raid_disk
] = di
->data_offset
;
3075 struct superswitch super_ddf
= {
3077 .examine_super
= examine_super_ddf
,
3078 .brief_examine_super
= brief_examine_super_ddf
,
3079 .detail_super
= detail_super_ddf
,
3080 .brief_detail_super
= brief_detail_super_ddf
,
3081 .validate_geometry
= validate_geometry_ddf
,
3082 .write_init_super
= write_init_super_ddf
,
3084 .match_home
= match_home_ddf
,
3085 .uuid_from_super
= uuid_from_super_ddf
,
3086 .getinfo_super
= getinfo_super_ddf
,
3087 .update_super
= update_super_ddf
,
3089 .avail_size
= avail_size_ddf
,
3091 .compare_super
= compare_super_ddf
,
3093 .load_super
= load_super_ddf
,
3094 .init_super
= init_super_ddf
,
3095 .store_super
= store_zero_ddf
,
3096 .free_super
= free_super_ddf
,
3097 .match_metadata_desc
= match_metadata_desc_ddf
,
3098 .add_to_super
= add_to_super_ddf
,
3099 .container_content
= container_content_ddf
,
3104 .open_new
= ddf_open_new
,
3105 .set_array_state
= ddf_set_array_state
,
3106 .set_disk
= ddf_set_disk
,
3107 .sync_metadata
= ddf_sync_metadata
,
3108 .process_update
= ddf_process_update
,
3109 .activate_spare
= ddf_activate_spare
,