2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2006-2009 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 /* a non-official T10 name for creation GUIDs */
35 static char T10
[] = "Linux-MD";
37 /* DDF timestamps are 1980 based, so we need to add
38 * second-in-decade-of-seventies to convert to linux timestamps.
39 * 10 years with 2 leap years.
41 #define DECADE (3600*24*(365*10+2))
44 const unsigned char *buf
,
47 /* The DDF metadata handling.
48 * DDF metadata lives at the end of the device.
49 * The last 512 byte block provides an 'anchor' which is used to locate
50 * the rest of the metadata which usually lives immediately behind the anchor.
53 * - all multibyte numeric fields are bigendian.
54 * - all strings are space padded.
58 /* Primary Raid Level (PRL) */
59 #define DDF_RAID0 0x00
60 #define DDF_RAID1 0x01
61 #define DDF_RAID3 0x03
62 #define DDF_RAID4 0x04
63 #define DDF_RAID5 0x05
64 #define DDF_RAID1E 0x11
66 #define DDF_CONCAT 0x1f
67 #define DDF_RAID5E 0x15
68 #define DDF_RAID5EE 0x25
69 #define DDF_RAID6 0x06
71 /* Raid Level Qualifier (RLQ) */
72 #define DDF_RAID0_SIMPLE 0x00
73 #define DDF_RAID1_SIMPLE 0x00 /* just 2 devices in this plex */
74 #define DDF_RAID1_MULTI 0x01 /* exactly 3 devices in this plex */
75 #define DDF_RAID3_0 0x00 /* parity in first extent */
76 #define DDF_RAID3_N 0x01 /* parity in last extent */
77 #define DDF_RAID4_0 0x00 /* parity in first extent */
78 #define DDF_RAID4_N 0x01 /* parity in last extent */
79 /* these apply to raid5e and raid5ee as well */
80 #define DDF_RAID5_0_RESTART 0x00 /* same as 'right asymmetric' - layout 1 */
81 #define DDF_RAID6_0_RESTART 0x01 /* raid6 different from raid5 here!!! */
82 #define DDF_RAID5_N_RESTART 0x02 /* same as 'left asymmetric' - layout 0 */
83 #define DDF_RAID5_N_CONTINUE 0x03 /* same as 'left symmetric' - layout 2 */
85 #define DDF_RAID1E_ADJACENT 0x00 /* raid10 nearcopies==2 */
86 #define DDF_RAID1E_OFFSET 0x01 /* raid10 offsetcopies==2 */
88 /* Secondary RAID Level (SRL) */
89 #define DDF_2STRIPED 0x00 /* This is weirder than RAID0 !! */
90 #define DDF_2MIRRORED 0x01
91 #define DDF_2CONCAT 0x02
92 #define DDF_2SPANNED 0x03 /* This is also weird - be careful */
95 #define DDF_HEADER_MAGIC __cpu_to_be32(0xDE11DE11)
96 #define DDF_CONTROLLER_MAGIC __cpu_to_be32(0xAD111111)
97 #define DDF_PHYS_RECORDS_MAGIC __cpu_to_be32(0x22222222)
98 #define DDF_PHYS_DATA_MAGIC __cpu_to_be32(0x33333333)
99 #define DDF_VIRT_RECORDS_MAGIC __cpu_to_be32(0xDDDDDDDD)
100 #define DDF_VD_CONF_MAGIC __cpu_to_be32(0xEEEEEEEE)
101 #define DDF_SPARE_ASSIGN_MAGIC __cpu_to_be32(0x55555555)
102 #define DDF_VU_CONF_MAGIC __cpu_to_be32(0x88888888)
103 #define DDF_VENDOR_LOG_MAGIC __cpu_to_be32(0x01dBEEF0)
104 #define DDF_BBM_LOG_MAGIC __cpu_to_be32(0xABADB10C)
106 #define DDF_GUID_LEN 24
107 #define DDF_REVISION_0 "01.00.00"
108 #define DDF_REVISION_2 "01.02.00"
111 __u32 magic
; /* DDF_HEADER_MAGIC */
113 char guid
[DDF_GUID_LEN
];
114 char revision
[8]; /* 01.02.00 */
115 __u32 seq
; /* starts at '1' */
120 __u8 pad0
; /* 0xff */
121 __u8 pad1
[12]; /* 12 * 0xff */
122 /* 64 bytes so far */
123 __u8 header_ext
[32]; /* reserved: fill with 0xff */
127 __u8 pad2
[3]; /* 0xff */
128 __u32 workspace_len
; /* sectors for vendor space -
129 * at least 32768(sectors) */
131 __u16 max_pd_entries
; /* one of 15, 63, 255, 1023, 4095 */
132 __u16 max_vd_entries
; /* 2^(4,6,8,10,12)-1 : i.e. as above */
133 __u16 max_partitions
; /* i.e. max num of configuration
134 record entries per disk */
135 __u16 config_record_len
; /* 1 +ROUNDUP(max_primary_element_entries
137 __u16 max_primary_element_entries
; /* 16, 64, 256, 1024, or 4096 */
138 __u8 pad3
[54]; /* 0xff */
139 /* 192 bytes so far */
140 __u32 controller_section_offset
;
141 __u32 controller_section_length
;
142 __u32 phys_section_offset
;
143 __u32 phys_section_length
;
144 __u32 virt_section_offset
;
145 __u32 virt_section_length
;
146 __u32 config_section_offset
;
147 __u32 config_section_length
;
148 __u32 data_section_offset
;
149 __u32 data_section_length
;
150 __u32 bbm_section_offset
;
151 __u32 bbm_section_length
;
152 __u32 diag_space_offset
;
153 __u32 diag_space_length
;
156 /* 256 bytes so far */
157 __u8 pad4
[256]; /* 0xff */
161 #define DDF_HEADER_ANCHOR 0x00
162 #define DDF_HEADER_PRIMARY 0x01
163 #define DDF_HEADER_SECONDARY 0x02
165 /* The content of the 'controller section' - global scope */
166 struct ddf_controller_data
{
167 __u32 magic
; /* DDF_CONTROLLER_MAGIC */
169 char guid
[DDF_GUID_LEN
];
170 struct controller_type
{
177 __u8 pad
[8]; /* 0xff */
178 __u8 vendor_data
[448];
181 /* The content of phys_section - global scope */
183 __u32 magic
; /* DDF_PHYS_RECORDS_MAGIC */
188 struct phys_disk_entry
{
189 char guid
[DDF_GUID_LEN
];
193 __u64 config_size
; /* DDF structures must be after here */
194 char path
[18]; /* another horrible structure really */
199 /* phys_disk_entry.type is a bitmap - bigendian remember */
200 #define DDF_Forced_PD_GUID 1
201 #define DDF_Active_in_VD 2
202 #define DDF_Global_Spare 4 /* VD_CONF records are ignored */
203 #define DDF_Spare 8 /* overrides Global_spare */
204 #define DDF_Foreign 16
205 #define DDF_Legacy 32 /* no DDF on this device */
207 #define DDF_Interface_mask 0xf00
208 #define DDF_Interface_SCSI 0x100
209 #define DDF_Interface_SAS 0x200
210 #define DDF_Interface_SATA 0x300
211 #define DDF_Interface_FC 0x400
213 /* phys_disk_entry.state is a bigendian bitmap */
215 #define DDF_Failed 2 /* overrides 1,4,8 */
216 #define DDF_Rebuilding 4
217 #define DDF_Transition 8
219 #define DDF_ReadErrors 32
220 #define DDF_Missing 64
222 /* The content of the virt_section global scope */
223 struct virtual_disk
{
224 __u32 magic
; /* DDF_VIRT_RECORDS_MAGIC */
226 __u16 populated_vdes
;
229 struct virtual_entry
{
230 char guid
[DDF_GUID_LEN
];
232 __u16 pad0
; /* 0xffff */
242 /* virtual_entry.type is a bitmap - bigendian */
244 #define DDF_Enforce_Groups 2
245 #define DDF_Unicode 4
246 #define DDF_Owner_Valid 8
248 /* virtual_entry.state is a bigendian bitmap */
249 #define DDF_state_mask 0x7
250 #define DDF_state_optimal 0x0
251 #define DDF_state_degraded 0x1
252 #define DDF_state_deleted 0x2
253 #define DDF_state_missing 0x3
254 #define DDF_state_failed 0x4
255 #define DDF_state_part_optimal 0x5
257 #define DDF_state_morphing 0x8
258 #define DDF_state_inconsistent 0x10
260 /* virtual_entry.init_state is a bigendian bitmap */
261 #define DDF_initstate_mask 0x03
262 #define DDF_init_not 0x00
263 #define DDF_init_quick 0x01 /* initialisation is progress.
264 * i.e. 'state_inconsistent' */
265 #define DDF_init_full 0x02
267 #define DDF_access_mask 0xc0
268 #define DDF_access_rw 0x00
269 #define DDF_access_ro 0x80
270 #define DDF_access_blocked 0xc0
272 /* The content of the config_section - local scope
273 * It has multiple records each config_record_len sectors
274 * They can be vd_config or spare_assign
278 __u32 magic
; /* DDF_VD_CONF_MAGIC */
280 char guid
[DDF_GUID_LEN
];
284 __u16 prim_elmnt_count
;
285 __u8 chunk_shift
; /* 0 == 512, 1==1024 etc */
288 __u8 sec_elmnt_count
;
291 __u64 blocks
; /* blocks per component could be different
292 * on different component devices...(only
293 * for concat I hope) */
294 __u64 array_blocks
; /* blocks in array */
302 __u8 v0
[32]; /* reserved- 0xff */
303 __u8 v1
[32]; /* reserved- 0xff */
304 __u8 v2
[16]; /* reserved- 0xff */
305 __u8 v3
[16]; /* reserved- 0xff */
307 __u32 phys_refnum
[0]; /* refnum of each disk in sequence */
308 /*__u64 lba_offset[0]; LBA offset in each phys. Note extents in a
309 bvd are always the same size */
312 /* vd_config.cache_pol[7] is a bitmap */
313 #define DDF_cache_writeback 1 /* else writethrough */
314 #define DDF_cache_wadaptive 2 /* only applies if writeback */
315 #define DDF_cache_readahead 4
316 #define DDF_cache_radaptive 8 /* only if doing read-ahead */
317 #define DDF_cache_ifnobatt 16 /* even to write cache if battery is poor */
318 #define DDF_cache_wallowed 32 /* enable write caching */
319 #define DDF_cache_rallowed 64 /* enable read caching */
321 struct spare_assign
{
322 __u32 magic
; /* DDF_SPARE_ASSIGN_MAGIC */
327 __u16 populated
; /* SAEs used */
328 __u16 max
; /* max SAEs */
330 struct spare_assign_entry
{
331 char guid
[DDF_GUID_LEN
];
332 __u16 secondary_element
;
336 /* spare_assign.type is a bitmap */
337 #define DDF_spare_dedicated 0x1 /* else global */
338 #define DDF_spare_revertible 0x2 /* else committable */
339 #define DDF_spare_active 0x4 /* else not active */
340 #define DDF_spare_affinity 0x8 /* enclosure affinity */
342 /* The data_section contents - local scope */
344 __u32 magic
; /* DDF_PHYS_DATA_MAGIC */
346 char guid
[DDF_GUID_LEN
];
347 __u32 refnum
; /* crc of some magic drive data ... */
348 __u8 forced_ref
; /* set when above was not result of magic */
349 __u8 forced_guid
; /* set if guid was forced rather than magic */
354 /* bbm_section content */
355 struct bad_block_log
{
362 struct mapped_block
{
363 __u64 defective_start
;
364 __u32 replacement_start
;
370 /* Struct for internally holding ddf structures */
371 /* The DDF structure stored on each device is potentially
372 * quite different, as some data is global and some is local.
373 * The global data is:
376 * - Physical disk records
377 * - Virtual disk records
379 * - Configuration records
380 * - Physical Disk data section
381 * ( and Bad block and vendor which I don't care about yet).
383 * The local data is parsed into separate lists as it is read
384 * and reconstructed for writing. This means that we only need
385 * to make config changes once and they are automatically
386 * propagated to all devices.
387 * Note that the ddf_super has space of the conf and disk data
388 * for this disk and also for a list of all such data.
389 * The list is only used for the superblock that is being
390 * built in Create or Assemble to describe the whole array.
393 struct ddf_header anchor
, primary
, secondary
;
394 struct ddf_controller_data controller
;
395 struct ddf_header
*active
;
396 struct phys_disk
*phys
;
397 struct virtual_disk
*virt
;
399 unsigned int max_part
, mppe
, conf_rec_len
;
407 __u64
*lba_offset
; /* location in 'conf' of
409 unsigned int vcnum
; /* index into ->virt */
410 __u64
*block_sizes
; /* NULL if all the same */
413 struct vd_config conf
;
414 } *conflist
, *currentconf
;
423 unsigned long long size
; /* sectors */
424 int pdnum
; /* index in ->phys */
425 struct spare_assign
*spare
;
426 void *mdupdate
; /* hold metadata update */
428 /* These fields used by auto-layout */
429 int raiddisk
; /* slot to fill in autolayout */
433 struct disk_data disk
;
434 struct vcl
*vlist
[0]; /* max_part in size */
439 #define offsetof(t,f) ((size_t)&(((t*)0)->f))
443 static unsigned int calc_crc(void *buf
, int len
)
445 /* crcs are always at the same place as in the ddf_header */
446 struct ddf_header
*ddf
= buf
;
447 __u32 oldcrc
= ddf
->crc
;
449 ddf
->crc
= 0xffffffff;
451 newcrc
= crc32(0, buf
, len
);
453 /* The crc is store (like everything) bigendian, so convert
454 * here for simplicity
456 return __cpu_to_be32(newcrc
);
459 static int load_ddf_header(int fd
, unsigned long long lba
,
460 unsigned long long size
,
462 struct ddf_header
*hdr
, struct ddf_header
*anchor
)
464 /* read a ddf header (primary or secondary) from fd/lba
465 * and check that it is consistent with anchor
467 * magic, crc, guid, rev, and LBA's header_type, and
468 * everything after header_type must be the same
473 if (lseek64(fd
, lba
<<9, 0) < 0)
476 if (read(fd
, hdr
, 512) != 512)
479 if (hdr
->magic
!= DDF_HEADER_MAGIC
)
481 if (calc_crc(hdr
, 512) != hdr
->crc
)
483 if (memcmp(anchor
->guid
, hdr
->guid
, DDF_GUID_LEN
) != 0 ||
484 memcmp(anchor
->revision
, hdr
->revision
, 8) != 0 ||
485 anchor
->primary_lba
!= hdr
->primary_lba
||
486 anchor
->secondary_lba
!= hdr
->secondary_lba
||
488 memcmp(anchor
->pad2
, hdr
->pad2
, 512 -
489 offsetof(struct ddf_header
, pad2
)) != 0)
492 /* Looks good enough to me... */
496 static void *load_section(int fd
, struct ddf_super
*super
, void *buf
,
497 __u32 offset_be
, __u32 len_be
, int check
)
499 unsigned long long offset
= __be32_to_cpu(offset_be
);
500 unsigned long long len
= __be32_to_cpu(len_be
);
501 int dofree
= (buf
== NULL
);
504 if (len
!= 2 && len
!= 8 && len
!= 32
505 && len
!= 128 && len
!= 512)
511 /* All pre-allocated sections are a single block */
514 } else if (posix_memalign(&buf
, 512, len
<<9) != 0)
520 if (super
->active
->type
== 1)
521 offset
+= __be64_to_cpu(super
->active
->primary_lba
);
523 offset
+= __be64_to_cpu(super
->active
->secondary_lba
);
525 if ((unsigned long long)lseek64(fd
, offset
<<9, 0) != (offset
<<9)) {
530 if ((unsigned long long)read(fd
, buf
, len
<<9) != (len
<<9)) {
538 static int load_ddf_headers(int fd
, struct ddf_super
*super
, char *devname
)
540 unsigned long long dsize
;
542 get_dev_size(fd
, NULL
, &dsize
);
544 if (lseek64(fd
, dsize
-512, 0) < 0) {
546 pr_err("Cannot seek to anchor block on %s: %s\n",
547 devname
, strerror(errno
));
550 if (read(fd
, &super
->anchor
, 512) != 512) {
552 pr_err("Cannot read anchor block on %s: %s\n",
553 devname
, strerror(errno
));
556 if (super
->anchor
.magic
!= DDF_HEADER_MAGIC
) {
558 pr_err("no DDF anchor found on %s\n",
562 if (calc_crc(&super
->anchor
, 512) != super
->anchor
.crc
) {
564 pr_err("bad CRC on anchor on %s\n",
568 if (memcmp(super
->anchor
.revision
, DDF_REVISION_0
, 8) != 0 &&
569 memcmp(super
->anchor
.revision
, DDF_REVISION_2
, 8) != 0) {
571 pr_err("can only support super revision"
572 " %.8s and earlier, not %.8s on %s\n",
573 DDF_REVISION_2
, super
->anchor
.revision
,devname
);
576 if (load_ddf_header(fd
, __be64_to_cpu(super
->anchor
.primary_lba
),
578 &super
->primary
, &super
->anchor
) == 0) {
580 pr_err("Failed to load primary DDF header "
584 super
->active
= &super
->primary
;
585 if (load_ddf_header(fd
, __be64_to_cpu(super
->anchor
.secondary_lba
),
587 &super
->secondary
, &super
->anchor
)) {
588 if ((__be32_to_cpu(super
->primary
.seq
)
589 < __be32_to_cpu(super
->secondary
.seq
) &&
590 !super
->secondary
.openflag
)
591 || (__be32_to_cpu(super
->primary
.seq
)
592 == __be32_to_cpu(super
->secondary
.seq
) &&
593 super
->primary
.openflag
&& !super
->secondary
.openflag
)
595 super
->active
= &super
->secondary
;
600 static int load_ddf_global(int fd
, struct ddf_super
*super
, char *devname
)
603 ok
= load_section(fd
, super
, &super
->controller
,
604 super
->active
->controller_section_offset
,
605 super
->active
->controller_section_length
,
607 super
->phys
= load_section(fd
, super
, NULL
,
608 super
->active
->phys_section_offset
,
609 super
->active
->phys_section_length
,
611 super
->pdsize
= __be32_to_cpu(super
->active
->phys_section_length
) * 512;
613 super
->virt
= load_section(fd
, super
, NULL
,
614 super
->active
->virt_section_offset
,
615 super
->active
->virt_section_length
,
617 super
->vdsize
= __be32_to_cpu(super
->active
->virt_section_length
) * 512;
627 super
->conflist
= NULL
;
630 super
->max_part
= __be16_to_cpu(super
->active
->max_partitions
);
631 super
->mppe
= __be16_to_cpu(super
->active
->max_primary_element_entries
);
632 super
->conf_rec_len
= __be16_to_cpu(super
->active
->config_record_len
);
636 static int load_ddf_local(int fd
, struct ddf_super
*super
,
637 char *devname
, int keep
)
643 unsigned int confsec
;
645 unsigned int max_virt_disks
= __be16_to_cpu(super
->active
->max_vd_entries
);
646 unsigned long long dsize
;
648 /* First the local disk info */
649 if (posix_memalign((void**)&dl
, 512,
651 (super
->max_part
) * sizeof(dl
->vlist
[0])) != 0) {
652 pr_err("%s could not allocate disk info buffer\n",
657 load_section(fd
, super
, &dl
->disk
,
658 super
->active
->data_section_offset
,
659 super
->active
->data_section_length
,
661 dl
->devname
= devname
? xstrdup(devname
) : NULL
;
664 dl
->major
= major(stb
.st_rdev
);
665 dl
->minor
= minor(stb
.st_rdev
);
666 dl
->next
= super
->dlist
;
667 dl
->fd
= keep
? fd
: -1;
670 if (get_dev_size(fd
, devname
, &dsize
))
671 dl
->size
= dsize
>> 9;
673 for (i
= 0 ; i
< super
->max_part
; i
++)
677 for (i
= 0; i
< __be16_to_cpu(super
->active
->max_pd_entries
); i
++)
678 if (memcmp(super
->phys
->entries
[i
].guid
,
679 dl
->disk
.guid
, DDF_GUID_LEN
) == 0)
682 /* Now the config list. */
683 /* 'conf' is an array of config entries, some of which are
684 * probably invalid. Those which are good need to be copied into
688 conf
= load_section(fd
, super
, NULL
,
689 super
->active
->config_section_offset
,
690 super
->active
->config_section_length
,
695 confsec
< __be32_to_cpu(super
->active
->config_section_length
);
696 confsec
+= super
->conf_rec_len
) {
697 struct vd_config
*vd
=
698 (struct vd_config
*)((char*)conf
+ confsec
*512);
701 if (vd
->magic
== DDF_SPARE_ASSIGN_MAGIC
) {
704 if (posix_memalign((void**)&dl
->spare
, 512,
705 super
->conf_rec_len
*512) != 0) {
706 pr_err("%s could not allocate spare info buf\n",
711 memcpy(dl
->spare
, vd
, super
->conf_rec_len
*512);
714 if (vd
->magic
!= DDF_VD_CONF_MAGIC
)
716 for (vcl
= super
->conflist
; vcl
; vcl
= vcl
->next
) {
717 if (memcmp(vcl
->conf
.guid
,
718 vd
->guid
, DDF_GUID_LEN
) == 0)
723 dl
->vlist
[vnum
++] = vcl
;
724 if (__be32_to_cpu(vd
->seqnum
) <=
725 __be32_to_cpu(vcl
->conf
.seqnum
))
728 if (posix_memalign((void**)&vcl
, 512,
729 (super
->conf_rec_len
*512 +
730 offsetof(struct vcl
, conf
))) != 0) {
731 pr_err("%s could not allocate vcl buf\n",
735 vcl
->next
= super
->conflist
;
736 vcl
->block_sizes
= NULL
; /* FIXME not for CONCAT */
737 super
->conflist
= vcl
;
738 dl
->vlist
[vnum
++] = vcl
;
740 memcpy(&vcl
->conf
, vd
, super
->conf_rec_len
*512);
741 vcl
->lba_offset
= (__u64
*)
742 &vcl
->conf
.phys_refnum
[super
->mppe
];
744 for (i
=0; i
< max_virt_disks
; i
++)
745 if (memcmp(super
->virt
->entries
[i
].guid
,
746 vcl
->conf
.guid
, DDF_GUID_LEN
)==0)
748 if (i
< max_virt_disks
)
757 static int load_super_ddf_all(struct supertype
*st
, int fd
,
758 void **sbp
, char *devname
);
761 static void free_super_ddf(struct supertype
*st
);
763 static int load_super_ddf(struct supertype
*st
, int fd
,
766 unsigned long long dsize
;
767 struct ddf_super
*super
;
770 if (get_dev_size(fd
, devname
, &dsize
) == 0)
773 if (test_partition(fd
))
774 /* DDF is not allowed on partitions */
777 /* 32M is a lower bound */
778 if (dsize
<= 32*1024*1024) {
780 pr_err("%s is too small for ddf: "
781 "size is %llu sectors.\n",
787 pr_err("%s is an odd size for ddf: "
788 "size is %llu bytes.\n",
795 if (posix_memalign((void**)&super
, 512, sizeof(*super
))!= 0) {
796 pr_err("malloc of %zu failed.\n",
800 memset(super
, 0, sizeof(*super
));
802 rv
= load_ddf_headers(fd
, super
, devname
);
808 /* Have valid headers and have chosen the best. Let's read in the rest*/
810 rv
= load_ddf_global(fd
, super
, devname
);
814 pr_err("Failed to load all information "
815 "sections on %s\n", devname
);
820 rv
= load_ddf_local(fd
, super
, devname
, 0);
824 pr_err("Failed to load all information "
825 "sections on %s\n", devname
);
830 /* Should possibly check the sections .... */
833 if (st
->ss
== NULL
) {
835 st
->minor_version
= 0;
842 static void free_super_ddf(struct supertype
*st
)
844 struct ddf_super
*ddf
= st
->sb
;
849 while (ddf
->conflist
) {
850 struct vcl
*v
= ddf
->conflist
;
851 ddf
->conflist
= v
->next
;
853 free(v
->block_sizes
);
857 struct dl
*d
= ddf
->dlist
;
858 ddf
->dlist
= d
->next
;
865 while (ddf
->add_list
) {
866 struct dl
*d
= ddf
->add_list
;
867 ddf
->add_list
= d
->next
;
878 static struct supertype
*match_metadata_desc_ddf(char *arg
)
880 /* 'ddf' only support containers */
881 struct supertype
*st
;
882 if (strcmp(arg
, "ddf") != 0 &&
883 strcmp(arg
, "default") != 0
887 st
= xcalloc(1, sizeof(*st
));
888 st
->container_dev
= NoMdDev
;
891 st
->minor_version
= 0;
899 static mapping_t ddf_state
[] = {
905 { "Partially Optimal", 5},
911 static mapping_t ddf_init_state
[] = {
912 { "Not Initialised", 0},
913 { "QuickInit in Progress", 1},
914 { "Fully Initialised", 2},
918 static mapping_t ddf_access
[] = {
922 { "Blocked (no access)", 3},
926 static mapping_t ddf_level
[] = {
927 { "RAID0", DDF_RAID0
},
928 { "RAID1", DDF_RAID1
},
929 { "RAID3", DDF_RAID3
},
930 { "RAID4", DDF_RAID4
},
931 { "RAID5", DDF_RAID5
},
932 { "RAID1E",DDF_RAID1E
},
934 { "CONCAT",DDF_CONCAT
},
935 { "RAID5E",DDF_RAID5E
},
936 { "RAID5EE",DDF_RAID5EE
},
937 { "RAID6", DDF_RAID6
},
940 static mapping_t ddf_sec_level
[] = {
941 { "Striped", DDF_2STRIPED
},
942 { "Mirrored", DDF_2MIRRORED
},
943 { "Concat", DDF_2CONCAT
},
944 { "Spanned", DDF_2SPANNED
},
952 static struct num_mapping ddf_level_num
[] = {
955 { DDF_RAID3
, LEVEL_UNSUPPORTED
},
958 { DDF_RAID1E
, LEVEL_UNSUPPORTED
},
959 { DDF_JBOD
, LEVEL_UNSUPPORTED
},
960 { DDF_CONCAT
, LEVEL_LINEAR
},
961 { DDF_RAID5E
, LEVEL_UNSUPPORTED
},
962 { DDF_RAID5EE
, LEVEL_UNSUPPORTED
},
967 static int map_num1(struct num_mapping
*map
, int num
)
970 for (i
=0 ; map
[i
].num1
!= MAXINT
; i
++)
971 if (map
[i
].num1
== num
)
976 static int all_ff(char *guid
)
979 for (i
= 0; i
< DDF_GUID_LEN
; i
++)
980 if (guid
[i
] != (char)0xff)
986 static void print_guid(char *guid
, int tstamp
)
988 /* A GUIDs are part (or all) ASCII and part binary.
989 * They tend to be space padded.
990 * We print the GUID in HEX, then in parentheses add
991 * any initial ASCII sequence, and a possible
992 * time stamp from bytes 16-19
994 int l
= DDF_GUID_LEN
;
997 for (i
=0 ; i
<DDF_GUID_LEN
; i
++) {
998 if ((i
&3)==0 && i
!= 0) printf(":");
999 printf("%02X", guid
[i
]&255);
1003 while (l
&& guid
[l
-1] == ' ')
1005 for (i
=0 ; i
<l
; i
++) {
1006 if (guid
[i
] >= 0x20 && guid
[i
] < 0x7f)
1007 fputc(guid
[i
], stdout
);
1012 time_t then
= __be32_to_cpu(*(__u32
*)(guid
+16)) + DECADE
;
1015 tm
= localtime(&then
);
1016 strftime(tbuf
, 100, " %D %T",tm
);
1017 fputs(tbuf
, stdout
);
1022 static void examine_vd(int n
, struct ddf_super
*sb
, char *guid
)
1024 int crl
= sb
->conf_rec_len
;
1027 for (vcl
= sb
->conflist
; vcl
; vcl
= vcl
->next
) {
1029 struct vd_config
*vc
= &vcl
->conf
;
1031 if (calc_crc(vc
, crl
*512) != vc
->crc
)
1033 if (memcmp(vc
->guid
, guid
, DDF_GUID_LEN
) != 0)
1036 /* Ok, we know about this VD, let's give more details */
1037 printf(" Raid Devices[%d] : %d (", n
,
1038 __be16_to_cpu(vc
->prim_elmnt_count
));
1039 for (i
= 0; i
< __be16_to_cpu(vc
->prim_elmnt_count
); i
++) {
1041 int cnt
= __be16_to_cpu(sb
->phys
->used_pdes
);
1042 for (j
=0; j
<cnt
; j
++)
1043 if (vc
->phys_refnum
[i
] == sb
->phys
->entries
[j
].refnum
)
1052 if (vc
->chunk_shift
!= 255)
1053 printf(" Chunk Size[%d] : %d sectors\n", n
,
1054 1 << vc
->chunk_shift
);
1055 printf(" Raid Level[%d] : %s\n", n
,
1056 map_num(ddf_level
, vc
->prl
)?:"-unknown-");
1057 if (vc
->sec_elmnt_count
!= 1) {
1058 printf(" Secondary Position[%d] : %d of %d\n", n
,
1059 vc
->sec_elmnt_seq
, vc
->sec_elmnt_count
);
1060 printf(" Secondary Level[%d] : %s\n", n
,
1061 map_num(ddf_sec_level
, vc
->srl
) ?: "-unknown-");
1063 printf(" Device Size[%d] : %llu\n", n
,
1064 (unsigned long long)__be64_to_cpu(vc
->blocks
)/2);
1065 printf(" Array Size[%d] : %llu\n", n
,
1066 (unsigned long long)__be64_to_cpu(vc
->array_blocks
)/2);
1070 static void examine_vds(struct ddf_super
*sb
)
1072 int cnt
= __be16_to_cpu(sb
->virt
->populated_vdes
);
1074 printf(" Virtual Disks : %d\n", cnt
);
1076 for (i
=0; i
<cnt
; i
++) {
1077 struct virtual_entry
*ve
= &sb
->virt
->entries
[i
];
1079 printf(" VD GUID[%d] : ", i
); print_guid(ve
->guid
, 1);
1081 printf(" unit[%d] : %d\n", i
, __be16_to_cpu(ve
->unit
));
1082 printf(" state[%d] : %s, %s%s\n", i
,
1083 map_num(ddf_state
, ve
->state
& 7),
1084 (ve
->state
& 8) ? "Morphing, ": "",
1085 (ve
->state
& 16)? "Not Consistent" : "Consistent");
1086 printf(" init state[%d] : %s\n", i
,
1087 map_num(ddf_init_state
, ve
->init_state
&3));
1088 printf(" access[%d] : %s\n", i
,
1089 map_num(ddf_access
, (ve
->init_state
>>6) & 3));
1090 printf(" Name[%d] : %.16s\n", i
, ve
->name
);
1091 examine_vd(i
, sb
, ve
->guid
);
1093 if (cnt
) printf("\n");
1096 static void examine_pds(struct ddf_super
*sb
)
1098 int cnt
= __be16_to_cpu(sb
->phys
->used_pdes
);
1101 printf(" Physical Disks : %d\n", cnt
);
1102 printf(" Number RefNo Size Device Type/State\n");
1104 for (i
=0 ; i
<cnt
; i
++) {
1105 struct phys_disk_entry
*pd
= &sb
->phys
->entries
[i
];
1106 int type
= __be16_to_cpu(pd
->type
);
1107 int state
= __be16_to_cpu(pd
->state
);
1109 //printf(" PD GUID[%d] : ", i); print_guid(pd->guid, 0);
1111 printf(" %3d %08x ", i
,
1112 __be32_to_cpu(pd
->refnum
));
1114 (unsigned long long)__be64_to_cpu(pd
->config_size
)>>1);
1115 for (dl
= sb
->dlist
; dl
; dl
= dl
->next
) {
1116 if (dl
->disk
.refnum
== pd
->refnum
) {
1117 char *dv
= map_dev(dl
->major
, dl
->minor
, 0);
1119 printf("%-15s", dv
);
1126 printf(" %s%s%s%s%s",
1127 (type
&2) ? "active":"",
1128 (type
&4) ? "Global-Spare":"",
1129 (type
&8) ? "spare" : "",
1130 (type
&16)? ", foreign" : "",
1131 (type
&32)? "pass-through" : "");
1132 if (state
& DDF_Failed
)
1133 /* This over-rides these three */
1134 state
&= ~(DDF_Online
|DDF_Rebuilding
|DDF_Transition
);
1135 printf("/%s%s%s%s%s%s%s",
1136 (state
&1)? "Online": "Offline",
1137 (state
&2)? ", Failed": "",
1138 (state
&4)? ", Rebuilding": "",
1139 (state
&8)? ", in-transition": "",
1140 (state
&16)? ", SMART-errors": "",
1141 (state
&32)? ", Unrecovered-Read-Errors": "",
1142 (state
&64)? ", Missing" : "");
1147 static void examine_super_ddf(struct supertype
*st
, char *homehost
)
1149 struct ddf_super
*sb
= st
->sb
;
1151 printf(" Magic : %08x\n", __be32_to_cpu(sb
->anchor
.magic
));
1152 printf(" Version : %.8s\n", sb
->anchor
.revision
);
1153 printf("Controller GUID : "); print_guid(sb
->controller
.guid
, 0);
1155 printf(" Container GUID : "); print_guid(sb
->anchor
.guid
, 1);
1157 printf(" Seq : %08x\n", __be32_to_cpu(sb
->active
->seq
));
1158 printf(" Redundant hdr : %s\n", sb
->secondary
.magic
== DDF_HEADER_MAGIC
1164 static void getinfo_super_ddf(struct supertype
*st
, struct mdinfo
*info
, char *map
);
1166 static void uuid_from_super_ddf(struct supertype
*st
, int uuid
[4]);
1168 static void brief_examine_super_ddf(struct supertype
*st
, int verbose
)
1170 /* We just write a generic DDF ARRAY entry
1174 getinfo_super_ddf(st
, &info
, NULL
);
1175 fname_from_uuid(st
, &info
, nbuf
, ':');
1177 printf("ARRAY metadata=ddf UUID=%s\n", nbuf
+ 5);
1180 static void brief_examine_subarrays_ddf(struct supertype
*st
, int verbose
)
1182 /* We just write a generic DDF ARRAY entry
1184 struct ddf_super
*ddf
= st
->sb
;
1188 getinfo_super_ddf(st
, &info
, NULL
);
1189 fname_from_uuid(st
, &info
, nbuf
, ':');
1191 for (i
= 0; i
< __be16_to_cpu(ddf
->virt
->max_vdes
); i
++) {
1192 struct virtual_entry
*ve
= &ddf
->virt
->entries
[i
];
1195 if (all_ff(ve
->guid
))
1197 memcpy(vcl
.conf
.guid
, ve
->guid
, DDF_GUID_LEN
);
1198 ddf
->currentconf
=&vcl
;
1199 uuid_from_super_ddf(st
, info
.uuid
);
1200 fname_from_uuid(st
, &info
, nbuf1
, ':');
1201 printf("ARRAY container=%s member=%d UUID=%s\n",
1202 nbuf
+5, i
, nbuf1
+5);
1206 static void export_examine_super_ddf(struct supertype
*st
)
1210 getinfo_super_ddf(st
, &info
, NULL
);
1211 fname_from_uuid(st
, &info
, nbuf
, ':');
1212 printf("MD_METADATA=ddf\n");
1213 printf("MD_LEVEL=container\n");
1214 printf("MD_UUID=%s\n", nbuf
+5);
1218 static void detail_super_ddf(struct supertype
*st
, char *homehost
)
1221 * Could print DDF GUID
1222 * Need to find which array
1223 * If whole, briefly list all arrays
1228 static void brief_detail_super_ddf(struct supertype
*st
)
1230 /* FIXME I really need to know which array we are detailing.
1231 * Can that be stored in ddf_super??
1233 // struct ddf_super *ddf = st->sb;
1236 getinfo_super_ddf(st
, &info
, NULL
);
1237 fname_from_uuid(st
, &info
, nbuf
,':');
1238 printf(" UUID=%s", nbuf
+ 5);
1242 static int match_home_ddf(struct supertype
*st
, char *homehost
)
1244 /* It matches 'this' host if the controller is a
1245 * Linux-MD controller with vendor_data matching
1248 struct ddf_super
*ddf
= st
->sb
;
1253 len
= strlen(homehost
);
1255 return (memcmp(ddf
->controller
.guid
, T10
, 8) == 0 &&
1256 len
< sizeof(ddf
->controller
.vendor_data
) &&
1257 memcmp(ddf
->controller
.vendor_data
, homehost
,len
) == 0 &&
1258 ddf
->controller
.vendor_data
[len
] == 0);
1262 static struct vd_config
*find_vdcr(struct ddf_super
*ddf
, unsigned int inst
)
1266 for (v
= ddf
->conflist
; v
; v
= v
->next
)
1267 if (inst
== v
->vcnum
)
1273 static int find_phys(struct ddf_super
*ddf
, __u32 phys_refnum
)
1275 /* Find the entry in phys_disk which has the given refnum
1276 * and return it's index
1279 for (i
= 0; i
< __be16_to_cpu(ddf
->phys
->max_pdes
); i
++)
1280 if (ddf
->phys
->entries
[i
].refnum
== phys_refnum
)
1285 static void uuid_from_super_ddf(struct supertype
*st
, int uuid
[4])
1287 /* The uuid returned here is used for:
1288 * uuid to put into bitmap file (Create, Grow)
1289 * uuid for backup header when saving critical section (Grow)
1290 * comparing uuids when re-adding a device into an array
1291 * In these cases the uuid required is that of the data-array,
1292 * not the device-set.
1293 * uuid to recognise same set when adding a missing device back
1294 * to an array. This is a uuid for the device-set.
1296 * For each of these we can make do with a truncated
1297 * or hashed uuid rather than the original, as long as
1299 * In the case of SVD we assume the BVD is of interest,
1300 * though that might be the case if a bitmap were made for
1301 * a mirrored SVD - worry about that later.
1302 * So we need to find the VD configuration record for the
1303 * relevant BVD and extract the GUID and Secondary_Element_Seq.
1304 * The first 16 bytes of the sha1 of these is used.
1306 struct ddf_super
*ddf
= st
->sb
;
1307 struct vcl
*vcl
= ddf
->currentconf
;
1310 struct sha1_ctx ctx
;
1313 guid
= vcl
->conf
.guid
;
1315 guid
= ddf
->anchor
.guid
;
1317 sha1_init_ctx(&ctx
);
1318 sha1_process_bytes(guid
, DDF_GUID_LEN
, &ctx
);
1319 sha1_finish_ctx(&ctx
, buf
);
1320 memcpy(uuid
, buf
, 4*4);
1323 static void getinfo_super_ddf_bvd(struct supertype
*st
, struct mdinfo
*info
, char *map
);
1325 static void getinfo_super_ddf(struct supertype
*st
, struct mdinfo
*info
, char *map
)
1327 struct ddf_super
*ddf
= st
->sb
;
1328 int map_disks
= info
->array
.raid_disks
;
1331 if (ddf
->currentconf
) {
1332 getinfo_super_ddf_bvd(st
, info
, map
);
1335 memset(info
, 0, sizeof(*info
));
1337 info
->array
.raid_disks
= __be16_to_cpu(ddf
->phys
->used_pdes
);
1338 info
->array
.level
= LEVEL_CONTAINER
;
1339 info
->array
.layout
= 0;
1340 info
->array
.md_minor
= -1;
1341 cptr
= (__u32
*)(ddf
->anchor
.guid
+ 16);
1342 info
->array
.ctime
= DECADE
+ __be32_to_cpu(*cptr
);
1344 info
->array
.utime
= 0;
1345 info
->array
.chunk_size
= 0;
1346 info
->container_enough
= 1;
1349 info
->disk
.major
= 0;
1350 info
->disk
.minor
= 0;
1352 info
->disk
.number
= __be32_to_cpu(ddf
->dlist
->disk
.refnum
);
1353 info
->disk
.raid_disk
= find_phys(ddf
, ddf
->dlist
->disk
.refnum
);
1355 info
->data_offset
= __be64_to_cpu(ddf
->phys
->
1356 entries
[info
->disk
.raid_disk
].
1358 info
->component_size
= ddf
->dlist
->size
- info
->data_offset
;
1360 info
->disk
.number
= -1;
1361 info
->disk
.raid_disk
= -1;
1362 // info->disk.raid_disk = find refnum in the table and use index;
1364 info
->disk
.state
= (1 << MD_DISK_SYNC
) | (1 << MD_DISK_ACTIVE
);
1367 info
->recovery_start
= MaxSector
;
1368 info
->reshape_active
= 0;
1369 info
->recovery_blocked
= 0;
1372 info
->array
.major_version
= -1;
1373 info
->array
.minor_version
= -2;
1374 strcpy(info
->text_version
, "ddf");
1375 info
->safe_mode_delay
= 0;
1377 uuid_from_super_ddf(st
, info
->uuid
);
1381 for (i
= 0 ; i
< map_disks
; i
++) {
1382 if (i
< info
->array
.raid_disks
&&
1383 (__be16_to_cpu(ddf
->phys
->entries
[i
].state
) & DDF_Online
) &&
1384 !(__be16_to_cpu(ddf
->phys
->entries
[i
].state
) & DDF_Failed
))
1392 static int rlq_to_layout(int rlq
, int prl
, int raiddisks
);
1394 static void getinfo_super_ddf_bvd(struct supertype
*st
, struct mdinfo
*info
, char *map
)
1396 struct ddf_super
*ddf
= st
->sb
;
1397 struct vcl
*vc
= ddf
->currentconf
;
1398 int cd
= ddf
->currentdev
;
1401 int map_disks
= info
->array
.raid_disks
;
1404 memset(info
, 0, sizeof(*info
));
1405 /* FIXME this returns BVD info - what if we want SVD ?? */
1407 info
->array
.raid_disks
= __be16_to_cpu(vc
->conf
.prim_elmnt_count
);
1408 info
->array
.level
= map_num1(ddf_level_num
, vc
->conf
.prl
);
1409 info
->array
.layout
= rlq_to_layout(vc
->conf
.rlq
, vc
->conf
.prl
,
1410 info
->array
.raid_disks
);
1411 info
->array
.md_minor
= -1;
1412 cptr
= (__u32
*)(vc
->conf
.guid
+ 16);
1413 info
->array
.ctime
= DECADE
+ __be32_to_cpu(*cptr
);
1414 info
->array
.utime
= DECADE
+ __be32_to_cpu(vc
->conf
.timestamp
);
1415 info
->array
.chunk_size
= 512 << vc
->conf
.chunk_shift
;
1416 info
->custom_array_size
= 0;
1418 if (cd
>= 0 && (unsigned)cd
< ddf
->mppe
) {
1419 info
->data_offset
= __be64_to_cpu(vc
->lba_offset
[cd
]);
1420 if (vc
->block_sizes
)
1421 info
->component_size
= vc
->block_sizes
[cd
];
1423 info
->component_size
= __be64_to_cpu(vc
->conf
.blocks
);
1426 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
1427 if (dl
->raiddisk
== ddf
->currentdev
)
1430 info
->disk
.major
= 0;
1431 info
->disk
.minor
= 0;
1432 info
->disk
.state
= 0;
1434 info
->disk
.major
= dl
->major
;
1435 info
->disk
.minor
= dl
->minor
;
1436 info
->disk
.raid_disk
= dl
->raiddisk
;
1437 info
->disk
.number
= dl
->pdnum
;
1438 info
->disk
.state
= (1<<MD_DISK_SYNC
)|(1<<MD_DISK_ACTIVE
);
1441 info
->container_member
= ddf
->currentconf
->vcnum
;
1443 info
->recovery_start
= MaxSector
;
1444 info
->resync_start
= 0;
1445 info
->reshape_active
= 0;
1446 info
->recovery_blocked
= 0;
1447 if (!(ddf
->virt
->entries
[info
->container_member
].state
1448 & DDF_state_inconsistent
) &&
1449 (ddf
->virt
->entries
[info
->container_member
].init_state
1450 & DDF_initstate_mask
)
1452 info
->resync_start
= MaxSector
;
1454 uuid_from_super_ddf(st
, info
->uuid
);
1456 info
->array
.major_version
= -1;
1457 info
->array
.minor_version
= -2;
1458 sprintf(info
->text_version
, "/%s/%d",
1459 devnum2devname(st
->container_dev
),
1460 info
->container_member
);
1461 info
->safe_mode_delay
= 200;
1463 memcpy(info
->name
, ddf
->virt
->entries
[info
->container_member
].name
, 16);
1466 if (info
->name
[j
] == ' ')
1470 for (j
= 0; j
< map_disks
; j
++) {
1472 if (j
< info
->array
.raid_disks
) {
1473 int i
= find_phys(ddf
, vc
->conf
.phys_refnum
[j
]);
1475 (__be16_to_cpu(ddf
->phys
->entries
[i
].state
) & DDF_Online
) &&
1476 !(__be16_to_cpu(ddf
->phys
->entries
[i
].state
) & DDF_Failed
))
1483 static int update_super_ddf(struct supertype
*st
, struct mdinfo
*info
,
1485 char *devname
, int verbose
,
1486 int uuid_set
, char *homehost
)
1488 /* For 'assemble' and 'force' we need to return non-zero if any
1489 * change was made. For others, the return value is ignored.
1490 * Update options are:
1491 * force-one : This device looks a bit old but needs to be included,
1492 * update age info appropriately.
1493 * assemble: clear any 'faulty' flag to allow this device to
1495 * force-array: Array is degraded but being forced, mark it clean
1496 * if that will be needed to assemble it.
1498 * newdev: not used ????
1499 * grow: Array has gained a new device - this is currently for
1501 * resync: mark as dirty so a resync will happen.
1502 * uuid: Change the uuid of the array to match what is given
1503 * homehost: update the recorded homehost
1504 * name: update the name - preserving the homehost
1505 * _reshape_progress: record new reshape_progress position.
1507 * Following are not relevant for this version:
1508 * sparc2.2 : update from old dodgey metadata
1509 * super-minor: change the preferred_minor number
1510 * summaries: update redundant counters.
1513 // struct ddf_super *ddf = st->sb;
1514 // struct vd_config *vd = find_vdcr(ddf, info->container_member);
1515 // struct virtual_entry *ve = find_ve(ddf);
1517 /* we don't need to handle "force-*" or "assemble" as
1518 * there is no need to 'trick' the kernel. We the metadata is
1519 * first updated to activate the array, all the implied modifications
1523 if (strcmp(update
, "grow") == 0) {
1525 } else if (strcmp(update
, "resync") == 0) {
1526 // info->resync_checkpoint = 0;
1527 } else if (strcmp(update
, "homehost") == 0) {
1528 /* homehost is stored in controller->vendor_data,
1529 * or it is when we are the vendor
1531 // if (info->vendor_is_local)
1532 // strcpy(ddf->controller.vendor_data, homehost);
1534 } else if (strcmp(update
, "name") == 0) {
1535 /* name is stored in virtual_entry->name */
1536 // memset(ve->name, ' ', 16);
1537 // strncpy(ve->name, info->name, 16);
1539 } else if (strcmp(update
, "_reshape_progress") == 0) {
1540 /* We don't support reshape yet */
1541 } else if (strcmp(update
, "assemble") == 0 ) {
1542 /* Do nothing, just succeed */
1547 // update_all_csum(ddf);
1552 static void make_header_guid(char *guid
)
1555 /* Create a DDF Header of Virtual Disk GUID */
1557 /* 24 bytes of fiction required.
1558 * first 8 are a 'vendor-id' - "Linux-MD"
1559 * next 8 are controller type.. how about 0X DEAD BEEF 0000 0000
1560 * Remaining 8 random number plus timestamp
1562 memcpy(guid
, T10
, sizeof(T10
));
1563 stamp
= __cpu_to_be32(0xdeadbeef);
1564 memcpy(guid
+8, &stamp
, 4);
1565 stamp
= __cpu_to_be32(0);
1566 memcpy(guid
+12, &stamp
, 4);
1567 stamp
= __cpu_to_be32(time(0) - DECADE
);
1568 memcpy(guid
+16, &stamp
, 4);
1570 memcpy(guid
+20, &stamp
, 4);
1573 static int init_super_ddf_bvd(struct supertype
*st
,
1574 mdu_array_info_t
*info
,
1575 unsigned long long size
,
1576 char *name
, char *homehost
,
1579 static int init_super_ddf(struct supertype
*st
,
1580 mdu_array_info_t
*info
,
1581 unsigned long long size
, char *name
, char *homehost
,
1584 /* This is primarily called by Create when creating a new array.
1585 * We will then get add_to_super called for each component, and then
1586 * write_init_super called to write it out to each device.
1587 * For DDF, Create can create on fresh devices or on a pre-existing
1589 * To create on a pre-existing array a different method will be called.
1590 * This one is just for fresh drives.
1592 * We need to create the entire 'ddf' structure which includes:
1593 * DDF headers - these are easy.
1594 * Controller data - a Sector describing this controller .. not that
1595 * this is a controller exactly.
1596 * Physical Disk Record - one entry per device, so
1597 * leave plenty of space.
1598 * Virtual Disk Records - again, just leave plenty of space.
1599 * This just lists VDs, doesn't give details
1600 * Config records - describes the VDs that use this disk
1601 * DiskData - describes 'this' device.
1602 * BadBlockManagement - empty
1603 * Diag Space - empty
1604 * Vendor Logs - Could we put bitmaps here?
1607 struct ddf_super
*ddf
;
1610 int max_phys_disks
, max_virt_disks
;
1611 unsigned long long sector
;
1615 struct phys_disk
*pd
;
1616 struct virtual_disk
*vd
;
1619 return init_super_ddf_bvd(st
, info
, size
, name
, homehost
, uuid
);
1621 if (posix_memalign((void**)&ddf
, 512, sizeof(*ddf
)) != 0) {
1622 pr_err("%s could not allocate superblock\n", __func__
);
1625 memset(ddf
, 0, sizeof(*ddf
));
1626 ddf
->dlist
= NULL
; /* no physical disks yet */
1627 ddf
->conflist
= NULL
; /* No virtual disks yet */
1631 /* zeroing superblock */
1635 /* At least 32MB *must* be reserved for the ddf. So let's just
1636 * start 32MB from the end, and put the primary header there.
1637 * Don't do secondary for now.
1638 * We don't know exactly where that will be yet as it could be
1639 * different on each device. To just set up the lengths.
1643 ddf
->anchor
.magic
= DDF_HEADER_MAGIC
;
1644 make_header_guid(ddf
->anchor
.guid
);
1646 memcpy(ddf
->anchor
.revision
, DDF_REVISION_2
, 8);
1647 ddf
->anchor
.seq
= __cpu_to_be32(1);
1648 ddf
->anchor
.timestamp
= __cpu_to_be32(time(0) - DECADE
);
1649 ddf
->anchor
.openflag
= 0xFF;
1650 ddf
->anchor
.foreignflag
= 0;
1651 ddf
->anchor
.enforcegroups
= 0; /* Is this best?? */
1652 ddf
->anchor
.pad0
= 0xff;
1653 memset(ddf
->anchor
.pad1
, 0xff, 12);
1654 memset(ddf
->anchor
.header_ext
, 0xff, 32);
1655 ddf
->anchor
.primary_lba
= ~(__u64
)0;
1656 ddf
->anchor
.secondary_lba
= ~(__u64
)0;
1657 ddf
->anchor
.type
= DDF_HEADER_ANCHOR
;
1658 memset(ddf
->anchor
.pad2
, 0xff, 3);
1659 ddf
->anchor
.workspace_len
= __cpu_to_be32(32768); /* Must be reserved */
1660 ddf
->anchor
.workspace_lba
= ~(__u64
)0; /* Put this at bottom
1661 of 32M reserved.. */
1662 max_phys_disks
= 1023; /* Should be enough */
1663 ddf
->anchor
.max_pd_entries
= __cpu_to_be16(max_phys_disks
);
1664 max_virt_disks
= 255;
1665 ddf
->anchor
.max_vd_entries
= __cpu_to_be16(max_virt_disks
); /* ?? */
1666 ddf
->anchor
.max_partitions
= __cpu_to_be16(64); /* ?? */
1669 ddf
->conf_rec_len
= 1 + ROUND_UP(ddf
->mppe
* (4+8), 512)/512;
1670 ddf
->anchor
.config_record_len
= __cpu_to_be16(ddf
->conf_rec_len
);
1671 ddf
->anchor
.max_primary_element_entries
= __cpu_to_be16(ddf
->mppe
);
1672 memset(ddf
->anchor
.pad3
, 0xff, 54);
1673 /* controller sections is one sector long immediately
1674 * after the ddf header */
1676 ddf
->anchor
.controller_section_offset
= __cpu_to_be32(sector
);
1677 ddf
->anchor
.controller_section_length
= __cpu_to_be32(1);
1680 /* phys is 8 sectors after that */
1681 pdsize
= ROUND_UP(sizeof(struct phys_disk
) +
1682 sizeof(struct phys_disk_entry
)*max_phys_disks
,
1684 switch(pdsize
/512) {
1685 case 2: case 8: case 32: case 128: case 512: break;
1688 ddf
->anchor
.phys_section_offset
= __cpu_to_be32(sector
);
1689 ddf
->anchor
.phys_section_length
=
1690 __cpu_to_be32(pdsize
/512); /* max_primary_element_entries/8 */
1691 sector
+= pdsize
/512;
1693 /* virt is another 32 sectors */
1694 vdsize
= ROUND_UP(sizeof(struct virtual_disk
) +
1695 sizeof(struct virtual_entry
) * max_virt_disks
,
1697 switch(vdsize
/512) {
1698 case 2: case 8: case 32: case 128: case 512: break;
1701 ddf
->anchor
.virt_section_offset
= __cpu_to_be32(sector
);
1702 ddf
->anchor
.virt_section_length
=
1703 __cpu_to_be32(vdsize
/512); /* max_vd_entries/8 */
1704 sector
+= vdsize
/512;
1706 clen
= ddf
->conf_rec_len
* (ddf
->max_part
+1);
1707 ddf
->anchor
.config_section_offset
= __cpu_to_be32(sector
);
1708 ddf
->anchor
.config_section_length
= __cpu_to_be32(clen
);
1711 ddf
->anchor
.data_section_offset
= __cpu_to_be32(sector
);
1712 ddf
->anchor
.data_section_length
= __cpu_to_be32(1);
1715 ddf
->anchor
.bbm_section_length
= __cpu_to_be32(0);
1716 ddf
->anchor
.bbm_section_offset
= __cpu_to_be32(0xFFFFFFFF);
1717 ddf
->anchor
.diag_space_length
= __cpu_to_be32(0);
1718 ddf
->anchor
.diag_space_offset
= __cpu_to_be32(0xFFFFFFFF);
1719 ddf
->anchor
.vendor_length
= __cpu_to_be32(0);
1720 ddf
->anchor
.vendor_offset
= __cpu_to_be32(0xFFFFFFFF);
1722 memset(ddf
->anchor
.pad4
, 0xff, 256);
1724 memcpy(&ddf
->primary
, &ddf
->anchor
, 512);
1725 memcpy(&ddf
->secondary
, &ddf
->anchor
, 512);
1727 ddf
->primary
.openflag
= 1; /* I guess.. */
1728 ddf
->primary
.type
= DDF_HEADER_PRIMARY
;
1730 ddf
->secondary
.openflag
= 1; /* I guess.. */
1731 ddf
->secondary
.type
= DDF_HEADER_SECONDARY
;
1733 ddf
->active
= &ddf
->primary
;
1735 ddf
->controller
.magic
= DDF_CONTROLLER_MAGIC
;
1737 /* 24 more bytes of fiction required.
1738 * first 8 are a 'vendor-id' - "Linux-MD"
1739 * Remaining 16 are serial number.... maybe a hostname would do?
1741 memcpy(ddf
->controller
.guid
, T10
, sizeof(T10
));
1742 gethostname(hostname
, sizeof(hostname
));
1743 hostname
[sizeof(hostname
) - 1] = 0;
1744 hostlen
= strlen(hostname
);
1745 memcpy(ddf
->controller
.guid
+ 24 - hostlen
, hostname
, hostlen
);
1746 for (i
= strlen(T10
) ; i
+hostlen
< 24; i
++)
1747 ddf
->controller
.guid
[i
] = ' ';
1749 ddf
->controller
.type
.vendor_id
= __cpu_to_be16(0xDEAD);
1750 ddf
->controller
.type
.device_id
= __cpu_to_be16(0xBEEF);
1751 ddf
->controller
.type
.sub_vendor_id
= 0;
1752 ddf
->controller
.type
.sub_device_id
= 0;
1753 memcpy(ddf
->controller
.product_id
, "What Is My PID??", 16);
1754 memset(ddf
->controller
.pad
, 0xff, 8);
1755 memset(ddf
->controller
.vendor_data
, 0xff, 448);
1756 if (homehost
&& strlen(homehost
) < 440)
1757 strcpy((char*)ddf
->controller
.vendor_data
, homehost
);
1759 if (posix_memalign((void**)&pd
, 512, pdsize
) != 0) {
1760 pr_err("%s could not allocate pd\n", __func__
);
1764 ddf
->pdsize
= pdsize
;
1766 memset(pd
, 0xff, pdsize
);
1767 memset(pd
, 0, sizeof(*pd
));
1768 pd
->magic
= DDF_PHYS_RECORDS_MAGIC
;
1769 pd
->used_pdes
= __cpu_to_be16(0);
1770 pd
->max_pdes
= __cpu_to_be16(max_phys_disks
);
1771 memset(pd
->pad
, 0xff, 52);
1773 if (posix_memalign((void**)&vd
, 512, vdsize
) != 0) {
1774 pr_err("%s could not allocate vd\n", __func__
);
1778 ddf
->vdsize
= vdsize
;
1779 memset(vd
, 0, vdsize
);
1780 vd
->magic
= DDF_VIRT_RECORDS_MAGIC
;
1781 vd
->populated_vdes
= __cpu_to_be16(0);
1782 vd
->max_vdes
= __cpu_to_be16(max_virt_disks
);
1783 memset(vd
->pad
, 0xff, 52);
1785 for (i
=0; i
<max_virt_disks
; i
++)
1786 memset(&vd
->entries
[i
], 0xff, sizeof(struct virtual_entry
));
1789 ddf
->updates_pending
= 1;
1793 static int chunk_to_shift(int chunksize
)
1795 return ffs(chunksize
/512)-1;
1798 static int level_to_prl(int level
)
1801 case LEVEL_LINEAR
: return DDF_CONCAT
;
1802 case 0: return DDF_RAID0
;
1803 case 1: return DDF_RAID1
;
1804 case 4: return DDF_RAID4
;
1805 case 5: return DDF_RAID5
;
1806 case 6: return DDF_RAID6
;
1810 static int layout_to_rlq(int level
, int layout
, int raiddisks
)
1814 return DDF_RAID0_SIMPLE
;
1817 case 2: return DDF_RAID1_SIMPLE
;
1818 case 3: return DDF_RAID1_MULTI
;
1823 case 0: return DDF_RAID4_N
;
1828 case ALGORITHM_LEFT_ASYMMETRIC
:
1829 return DDF_RAID5_N_RESTART
;
1830 case ALGORITHM_RIGHT_ASYMMETRIC
:
1831 return DDF_RAID5_0_RESTART
;
1832 case ALGORITHM_LEFT_SYMMETRIC
:
1833 return DDF_RAID5_N_CONTINUE
;
1834 case ALGORITHM_RIGHT_SYMMETRIC
:
1835 return -1; /* not mentioned in standard */
1839 case ALGORITHM_ROTATING_N_RESTART
:
1840 return DDF_RAID5_N_RESTART
;
1841 case ALGORITHM_ROTATING_ZERO_RESTART
:
1842 return DDF_RAID6_0_RESTART
;
1843 case ALGORITHM_ROTATING_N_CONTINUE
:
1844 return DDF_RAID5_N_CONTINUE
;
1850 static int rlq_to_layout(int rlq
, int prl
, int raiddisks
)
1854 return 0; /* hopefully rlq == DDF_RAID0_SIMPLE */
1856 return 0; /* hopefully rlq == SIMPLE or MULTI depending
1864 return -1; /* FIXME this isn't checked */
1868 case DDF_RAID5_N_RESTART
:
1869 return ALGORITHM_LEFT_ASYMMETRIC
;
1870 case DDF_RAID5_0_RESTART
:
1871 return ALGORITHM_RIGHT_ASYMMETRIC
;
1872 case DDF_RAID5_N_CONTINUE
:
1873 return ALGORITHM_LEFT_SYMMETRIC
;
1879 case DDF_RAID5_N_RESTART
:
1880 return ALGORITHM_ROTATING_N_RESTART
;
1881 case DDF_RAID6_0_RESTART
:
1882 return ALGORITHM_ROTATING_ZERO_RESTART
;
1883 case DDF_RAID5_N_CONTINUE
:
1884 return ALGORITHM_ROTATING_N_CONTINUE
;
1894 unsigned long long start
, size
;
1896 static int cmp_extent(const void *av
, const void *bv
)
1898 const struct extent
*a
= av
;
1899 const struct extent
*b
= bv
;
1900 if (a
->start
< b
->start
)
1902 if (a
->start
> b
->start
)
1907 static struct extent
*get_extents(struct ddf_super
*ddf
, struct dl
*dl
)
1909 /* find a list of used extents on the give physical device
1910 * (dnum) of the given ddf.
1911 * Return a malloced array of 'struct extent'
1913 FIXME ignore DDF_Legacy devices?
1920 rv
= xmalloc(sizeof(struct extent
) * (ddf
->max_part
+ 2));
1922 for (i
= 0; i
< ddf
->max_part
; i
++) {
1923 struct vcl
*v
= dl
->vlist
[i
];
1926 for (j
= 0; j
< v
->conf
.prim_elmnt_count
; j
++)
1927 if (v
->conf
.phys_refnum
[j
] == dl
->disk
.refnum
) {
1928 /* This device plays role 'j' in 'v'. */
1929 rv
[n
].start
= __be64_to_cpu(v
->lba_offset
[j
]);
1930 rv
[n
].size
= __be64_to_cpu(v
->conf
.blocks
);
1935 qsort(rv
, n
, sizeof(*rv
), cmp_extent
);
1937 rv
[n
].start
= __be64_to_cpu(ddf
->phys
->entries
[dl
->pdnum
].config_size
);
1943 static int init_super_ddf_bvd(struct supertype
*st
,
1944 mdu_array_info_t
*info
,
1945 unsigned long long size
,
1946 char *name
, char *homehost
,
1949 /* We are creating a BVD inside a pre-existing container.
1950 * so st->sb is already set.
1951 * We need to create a new vd_config and a new virtual_entry
1953 struct ddf_super
*ddf
= st
->sb
;
1955 struct virtual_entry
*ve
;
1957 struct vd_config
*vc
;
1959 if (__be16_to_cpu(ddf
->virt
->populated_vdes
)
1960 >= __be16_to_cpu(ddf
->virt
->max_vdes
)) {
1961 pr_err("This ddf already has the "
1962 "maximum of %d virtual devices\n",
1963 __be16_to_cpu(ddf
->virt
->max_vdes
));
1968 for (venum
= 0; venum
< __be16_to_cpu(ddf
->virt
->max_vdes
); venum
++)
1969 if (!all_ff(ddf
->virt
->entries
[venum
].guid
)) {
1970 char *n
= ddf
->virt
->entries
[venum
].name
;
1972 if (strncmp(name
, n
, 16) == 0) {
1973 pr_err("This ddf already"
1974 " has an array called %s\n",
1980 for (venum
= 0; venum
< __be16_to_cpu(ddf
->virt
->max_vdes
); venum
++)
1981 if (all_ff(ddf
->virt
->entries
[venum
].guid
))
1983 if (venum
== __be16_to_cpu(ddf
->virt
->max_vdes
)) {
1984 pr_err("Cannot find spare slot for "
1985 "virtual disk - DDF is corrupt\n");
1988 ve
= &ddf
->virt
->entries
[venum
];
1990 /* A Virtual Disk GUID contains the T10 Vendor ID, controller type,
1991 * timestamp, random number
1993 make_header_guid(ve
->guid
);
1994 ve
->unit
= __cpu_to_be16(info
->md_minor
);
1996 ve
->guid_crc
= crc32(0, (unsigned char*)ddf
->anchor
.guid
, DDF_GUID_LEN
);
1998 ve
->state
= DDF_state_degraded
; /* Will be modified as devices are added */
1999 if (info
->state
& 1) /* clean */
2000 ve
->init_state
= DDF_init_full
;
2002 ve
->init_state
= DDF_init_not
;
2004 memset(ve
->pad1
, 0xff, 14);
2005 memset(ve
->name
, ' ', 16);
2007 strncpy(ve
->name
, name
, 16);
2008 ddf
->virt
->populated_vdes
=
2009 __cpu_to_be16(__be16_to_cpu(ddf
->virt
->populated_vdes
)+1);
2011 /* Now create a new vd_config */
2012 if (posix_memalign((void**)&vcl
, 512,
2013 (offsetof(struct vcl
, conf
) + ddf
->conf_rec_len
* 512)) != 0) {
2014 pr_err("%s could not allocate vd_config\n", __func__
);
2017 vcl
->lba_offset
= (__u64
*) &vcl
->conf
.phys_refnum
[ddf
->mppe
];
2019 vcl
->block_sizes
= NULL
; /* FIXME not for CONCAT */
2023 vc
->magic
= DDF_VD_CONF_MAGIC
;
2024 memcpy(vc
->guid
, ve
->guid
, DDF_GUID_LEN
);
2025 vc
->timestamp
= __cpu_to_be32(time(0)-DECADE
);
2026 vc
->seqnum
= __cpu_to_be32(1);
2027 memset(vc
->pad0
, 0xff, 24);
2028 vc
->prim_elmnt_count
= __cpu_to_be16(info
->raid_disks
);
2029 vc
->chunk_shift
= chunk_to_shift(info
->chunk_size
);
2030 vc
->prl
= level_to_prl(info
->level
);
2031 vc
->rlq
= layout_to_rlq(info
->level
, info
->layout
, info
->raid_disks
);
2032 vc
->sec_elmnt_count
= 1;
2033 vc
->sec_elmnt_seq
= 0;
2035 vc
->blocks
= __cpu_to_be64(info
->size
* 2);
2036 vc
->array_blocks
= __cpu_to_be64(
2037 calc_array_size(info
->level
, info
->raid_disks
, info
->layout
,
2038 info
->chunk_size
, info
->size
*2));
2039 memset(vc
->pad1
, 0xff, 8);
2040 vc
->spare_refs
[0] = 0xffffffff;
2041 vc
->spare_refs
[1] = 0xffffffff;
2042 vc
->spare_refs
[2] = 0xffffffff;
2043 vc
->spare_refs
[3] = 0xffffffff;
2044 vc
->spare_refs
[4] = 0xffffffff;
2045 vc
->spare_refs
[5] = 0xffffffff;
2046 vc
->spare_refs
[6] = 0xffffffff;
2047 vc
->spare_refs
[7] = 0xffffffff;
2048 memset(vc
->cache_pol
, 0, 8);
2050 memset(vc
->pad2
, 0xff, 3);
2051 memset(vc
->pad3
, 0xff, 52);
2052 memset(vc
->pad4
, 0xff, 192);
2053 memset(vc
->v0
, 0xff, 32);
2054 memset(vc
->v1
, 0xff, 32);
2055 memset(vc
->v2
, 0xff, 16);
2056 memset(vc
->v3
, 0xff, 16);
2057 memset(vc
->vendor
, 0xff, 32);
2059 memset(vc
->phys_refnum
, 0xff, 4*ddf
->mppe
);
2060 memset(vc
->phys_refnum
+ddf
->mppe
, 0x00, 8*ddf
->mppe
);
2062 vcl
->next
= ddf
->conflist
;
2063 ddf
->conflist
= vcl
;
2064 ddf
->currentconf
= vcl
;
2065 ddf
->updates_pending
= 1;
2070 static void add_to_super_ddf_bvd(struct supertype
*st
,
2071 mdu_disk_info_t
*dk
, int fd
, char *devname
)
2073 /* fd and devname identify a device with-in the ddf container (st).
2074 * dk identifies a location in the new BVD.
2075 * We need to find suitable free space in that device and update
2076 * the phys_refnum and lba_offset for the newly created vd_config.
2077 * We might also want to update the type in the phys_disk
2080 * Alternately: fd == -1 and we have already chosen which device to
2081 * use and recorded in dlist->raid_disk;
2084 struct ddf_super
*ddf
= st
->sb
;
2085 struct vd_config
*vc
;
2087 unsigned int working
;
2089 unsigned long long blocks
, pos
, esize
;
2093 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
2094 if (dl
->raiddisk
== dk
->raid_disk
)
2097 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
2098 if (dl
->major
== dk
->major
&&
2099 dl
->minor
== dk
->minor
)
2102 if (!dl
|| ! (dk
->state
& (1<<MD_DISK_SYNC
)))
2105 vc
= &ddf
->currentconf
->conf
;
2106 lba_offset
= ddf
->currentconf
->lba_offset
;
2108 ex
= get_extents(ddf
, dl
);
2113 blocks
= __be64_to_cpu(vc
->blocks
);
2114 if (ddf
->currentconf
->block_sizes
)
2115 blocks
= ddf
->currentconf
->block_sizes
[dk
->raid_disk
];
2118 esize
= ex
[i
].start
- pos
;
2119 if (esize
>= blocks
)
2121 pos
= ex
[i
].start
+ ex
[i
].size
;
2123 } while (ex
[i
-1].size
);
2129 ddf
->currentdev
= dk
->raid_disk
;
2130 vc
->phys_refnum
[dk
->raid_disk
] = dl
->disk
.refnum
;
2131 lba_offset
[dk
->raid_disk
] = __cpu_to_be64(pos
);
2133 for (i
= 0; i
< ddf
->max_part
; i
++)
2134 if (dl
->vlist
[i
] == NULL
)
2136 if (i
== ddf
->max_part
)
2138 dl
->vlist
[i
] = ddf
->currentconf
;
2143 dl
->devname
= devname
;
2145 /* Check how many working raid_disks, and if we can mark
2146 * array as optimal yet
2150 for (i
= 0; i
< __be16_to_cpu(vc
->prim_elmnt_count
); i
++)
2151 if (vc
->phys_refnum
[i
] != 0xffffffff)
2154 /* Find which virtual_entry */
2155 i
= ddf
->currentconf
->vcnum
;
2156 if (working
== __be16_to_cpu(vc
->prim_elmnt_count
))
2157 ddf
->virt
->entries
[i
].state
=
2158 (ddf
->virt
->entries
[i
].state
& ~DDF_state_mask
)
2159 | DDF_state_optimal
;
2161 if (vc
->prl
== DDF_RAID6
&&
2162 working
+1 == __be16_to_cpu(vc
->prim_elmnt_count
))
2163 ddf
->virt
->entries
[i
].state
=
2164 (ddf
->virt
->entries
[i
].state
& ~DDF_state_mask
)
2165 | DDF_state_part_optimal
;
2167 ddf
->phys
->entries
[dl
->pdnum
].type
&= ~__cpu_to_be16(DDF_Global_Spare
);
2168 ddf
->phys
->entries
[dl
->pdnum
].type
|= __cpu_to_be16(DDF_Active_in_VD
);
2169 ddf
->updates_pending
= 1;
2172 /* add a device to a container, either while creating it or while
2173 * expanding a pre-existing container
2175 static int add_to_super_ddf(struct supertype
*st
,
2176 mdu_disk_info_t
*dk
, int fd
, char *devname
)
2178 struct ddf_super
*ddf
= st
->sb
;
2182 unsigned long long size
;
2183 struct phys_disk_entry
*pde
;
2188 if (ddf
->currentconf
) {
2189 add_to_super_ddf_bvd(st
, dk
, fd
, devname
);
2193 /* This is device numbered dk->number. We need to create
2194 * a phys_disk entry and a more detailed disk_data entry.
2197 if (posix_memalign((void**)&dd
, 512,
2198 sizeof(*dd
) + sizeof(dd
->vlist
[0]) * ddf
->max_part
) != 0) {
2199 pr_err("%s could allocate buffer for new disk, aborting\n",
2203 dd
->major
= major(stb
.st_rdev
);
2204 dd
->minor
= minor(stb
.st_rdev
);
2205 dd
->devname
= devname
;
2209 dd
->disk
.magic
= DDF_PHYS_DATA_MAGIC
;
2211 tm
= localtime(&now
);
2212 sprintf(dd
->disk
.guid
, "%8s%04d%02d%02d",
2213 T10
, tm
->tm_year
+1900, tm
->tm_mon
+1, tm
->tm_mday
);
2214 tptr
= (__u32
*)(dd
->disk
.guid
+ 16);
2215 *tptr
++ = random32();
2219 /* Cannot be bothered finding a CRC of some irrelevant details*/
2220 dd
->disk
.refnum
= random32();
2221 for (i
= __be16_to_cpu(ddf
->active
->max_pd_entries
);
2223 if (ddf
->phys
->entries
[i
-1].refnum
== dd
->disk
.refnum
)
2227 dd
->disk
.forced_ref
= 1;
2228 dd
->disk
.forced_guid
= 1;
2229 memset(dd
->disk
.vendor
, ' ', 32);
2230 memcpy(dd
->disk
.vendor
, "Linux", 5);
2231 memset(dd
->disk
.pad
, 0xff, 442);
2232 for (i
= 0; i
< ddf
->max_part
; i
++)
2233 dd
->vlist
[i
] = NULL
;
2235 n
= __be16_to_cpu(ddf
->phys
->used_pdes
);
2236 pde
= &ddf
->phys
->entries
[n
];
2239 if (st
->update_tail
) {
2240 int len
= (sizeof(struct phys_disk
) +
2241 sizeof(struct phys_disk_entry
));
2242 struct phys_disk
*pd
;
2245 pd
->magic
= DDF_PHYS_RECORDS_MAGIC
;
2246 pd
->used_pdes
= __cpu_to_be16(n
);
2247 pde
= &pd
->entries
[0];
2251 ddf
->phys
->used_pdes
= __cpu_to_be16(n
);
2254 memcpy(pde
->guid
, dd
->disk
.guid
, DDF_GUID_LEN
);
2255 pde
->refnum
= dd
->disk
.refnum
;
2256 pde
->type
= __cpu_to_be16(DDF_Forced_PD_GUID
| DDF_Global_Spare
);
2257 pde
->state
= __cpu_to_be16(DDF_Online
);
2258 get_dev_size(fd
, NULL
, &size
);
2259 /* We are required to reserve 32Meg, and record the size in sectors */
2260 pde
->config_size
= __cpu_to_be64( (size
- 32*1024*1024) / 512);
2261 sprintf(pde
->path
, "%17.17s","Information: nil") ;
2262 memset(pde
->pad
, 0xff, 6);
2264 dd
->size
= size
>> 9;
2265 if (st
->update_tail
) {
2266 dd
->next
= ddf
->add_list
;
2269 dd
->next
= ddf
->dlist
;
2271 ddf
->updates_pending
= 1;
2277 static int remove_from_super_ddf(struct supertype
*st
, mdu_disk_info_t
*dk
)
2279 struct ddf_super
*ddf
= st
->sb
;
2282 /* mdmon has noticed that this disk (dk->major/dk->minor) has
2283 * disappeared from the container.
2284 * We need to arrange that it disappears from the metadata and
2285 * internal data structures too.
2286 * Most of the work is done by ddf_process_update which edits
2287 * the metadata and closes the file handle and attaches the memory
2288 * where free_updates will free it.
2290 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
2291 if (dl
->major
== dk
->major
&&
2292 dl
->minor
== dk
->minor
)
2297 if (st
->update_tail
) {
2298 int len
= (sizeof(struct phys_disk
) +
2299 sizeof(struct phys_disk_entry
));
2300 struct phys_disk
*pd
;
2303 pd
->magic
= DDF_PHYS_RECORDS_MAGIC
;
2304 pd
->used_pdes
= __cpu_to_be16(dl
->pdnum
);
2305 pd
->entries
[0].state
= __cpu_to_be16(DDF_Missing
);
2306 append_metadata_update(st
, pd
, len
);
2312 * This is the write_init_super method for a ddf container. It is
2313 * called when creating a container or adding another device to a
2316 #define NULL_CONF_SZ 4096
2318 static int __write_init_super_ddf(struct supertype
*st
)
2321 struct ddf_super
*ddf
= st
->sb
;
2328 unsigned long long size
, sector
;
2331 if (posix_memalign((void**)&null_aligned
, 4096, NULL_CONF_SZ
) != 0) {
2334 memset(null_aligned
, 0xff, NULL_CONF_SZ
);
2336 /* try to write updated metadata,
2337 * if we catch a failure move on to the next disk
2339 for (d
= ddf
->dlist
; d
; d
=d
->next
) {
2346 /* We need to fill in the primary, (secondary) and workspace
2347 * lba's in the headers, set their checksums,
2348 * Also checksum phys, virt....
2350 * Then write everything out, finally the anchor is written.
2352 get_dev_size(fd
, NULL
, &size
);
2354 ddf
->anchor
.workspace_lba
= __cpu_to_be64(size
- 32*1024*2);
2355 ddf
->anchor
.primary_lba
= __cpu_to_be64(size
- 16*1024*2);
2356 ddf
->anchor
.seq
= __cpu_to_be32(1);
2357 memcpy(&ddf
->primary
, &ddf
->anchor
, 512);
2358 memcpy(&ddf
->secondary
, &ddf
->anchor
, 512);
2360 ddf
->anchor
.openflag
= 0xFF; /* 'open' means nothing */
2361 ddf
->anchor
.seq
= 0xFFFFFFFF; /* no sequencing in anchor */
2362 ddf
->anchor
.crc
= calc_crc(&ddf
->anchor
, 512);
2364 ddf
->primary
.openflag
= 0;
2365 ddf
->primary
.type
= DDF_HEADER_PRIMARY
;
2367 ddf
->secondary
.openflag
= 0;
2368 ddf
->secondary
.type
= DDF_HEADER_SECONDARY
;
2370 ddf
->primary
.crc
= calc_crc(&ddf
->primary
, 512);
2371 ddf
->secondary
.crc
= calc_crc(&ddf
->secondary
, 512);
2373 sector
= size
- 16*1024*2;
2374 lseek64(fd
, sector
<<9, 0);
2375 if (write(fd
, &ddf
->primary
, 512) < 0)
2378 ddf
->controller
.crc
= calc_crc(&ddf
->controller
, 512);
2379 if (write(fd
, &ddf
->controller
, 512) < 0)
2382 ddf
->phys
->crc
= calc_crc(ddf
->phys
, ddf
->pdsize
);
2384 if (write(fd
, ddf
->phys
, ddf
->pdsize
) < 0)
2387 ddf
->virt
->crc
= calc_crc(ddf
->virt
, ddf
->vdsize
);
2388 if (write(fd
, ddf
->virt
, ddf
->vdsize
) < 0)
2391 /* Now write lots of config records. */
2392 n_config
= ddf
->max_part
;
2393 conf_size
= ddf
->conf_rec_len
* 512;
2394 for (i
= 0 ; i
<= n_config
; i
++) {
2395 struct vcl
*c
= d
->vlist
[i
];
2397 c
= (struct vcl
*)d
->spare
;
2400 c
->conf
.crc
= calc_crc(&c
->conf
, conf_size
);
2401 if (write(fd
, &c
->conf
, conf_size
) < 0)
2404 unsigned int togo
= conf_size
;
2405 while (togo
> NULL_CONF_SZ
) {
2406 if (write(fd
, null_aligned
, NULL_CONF_SZ
) < 0)
2408 togo
-= NULL_CONF_SZ
;
2410 if (write(fd
, null_aligned
, togo
) < 0)
2416 d
->disk
.crc
= calc_crc(&d
->disk
, 512);
2417 if (write(fd
, &d
->disk
, 512) < 0)
2420 /* Maybe do the same for secondary */
2422 lseek64(fd
, (size
-1)*512, SEEK_SET
);
2423 if (write(fd
, &ddf
->anchor
, 512) < 0)
2429 return attempts
!= successes
;
2432 static int write_init_super_ddf(struct supertype
*st
)
2434 struct ddf_super
*ddf
= st
->sb
;
2435 struct vcl
*currentconf
= ddf
->currentconf
;
2437 /* we are done with currentconf reset it to point st at the container */
2438 ddf
->currentconf
= NULL
;
2440 if (st
->update_tail
) {
2441 /* queue the virtual_disk and vd_config as metadata updates */
2442 struct virtual_disk
*vd
;
2443 struct vd_config
*vc
;
2447 int len
= (sizeof(struct phys_disk
) +
2448 sizeof(struct phys_disk_entry
));
2450 /* adding a disk to the container. */
2454 append_metadata_update(st
, ddf
->add_list
->mdupdate
, len
);
2455 ddf
->add_list
->mdupdate
= NULL
;
2459 /* Newly created VD */
2461 /* First the virtual disk. We have a slightly fake header */
2462 len
= sizeof(struct virtual_disk
) + sizeof(struct virtual_entry
);
2465 vd
->entries
[0] = ddf
->virt
->entries
[currentconf
->vcnum
];
2466 vd
->populated_vdes
= __cpu_to_be16(currentconf
->vcnum
);
2467 append_metadata_update(st
, vd
, len
);
2469 /* Then the vd_config */
2470 len
= ddf
->conf_rec_len
* 512;
2472 memcpy(vc
, ¤tconf
->conf
, len
);
2473 append_metadata_update(st
, vc
, len
);
2475 /* FIXME I need to close the fds! */
2479 for (d
= ddf
->dlist
; d
; d
=d
->next
)
2480 while (Kill(d
->devname
, NULL
, 0, -1, 1) == 0);
2481 return __write_init_super_ddf(st
);
2487 static __u64
avail_size_ddf(struct supertype
*st
, __u64 devsize
)
2489 /* We must reserve the last 32Meg */
2490 if (devsize
<= 32*1024*2)
2492 return devsize
- 32*1024*2;
2497 static int reserve_space(struct supertype
*st
, int raiddisks
,
2498 unsigned long long size
, int chunk
,
2499 unsigned long long *freesize
)
2501 /* Find 'raiddisks' spare extents at least 'size' big (but
2502 * only caring about multiples of 'chunk') and remember
2504 * If the cannot be found, fail.
2507 struct ddf_super
*ddf
= st
->sb
;
2510 for (dl
= ddf
->dlist
; dl
; dl
=dl
->next
) {
2514 /* Now find largest extent on each device */
2515 for (dl
= ddf
->dlist
; dl
; dl
=dl
->next
) {
2516 struct extent
*e
= get_extents(ddf
, dl
);
2517 unsigned long long pos
= 0;
2520 unsigned long long minsize
= size
;
2528 unsigned long long esize
;
2529 esize
= e
[i
].start
- pos
;
2530 if (esize
>= minsize
) {
2534 pos
= e
[i
].start
+ e
[i
].size
;
2536 } while (e
[i
-1].size
);
2539 dl
->esize
= minsize
;
2543 if (cnt
< raiddisks
) {
2544 pr_err("not enough devices with space to create array.\n");
2545 return 0; /* No enough free spaces large enough */
2548 /* choose the largest size of which there are at least 'raiddisk' */
2549 for (dl
= ddf
->dlist
; dl
; dl
=dl
->next
) {
2551 if (dl
->esize
<= size
)
2553 /* This is bigger than 'size', see if there are enough */
2555 for (dl2
= ddf
->dlist
; dl2
; dl2
=dl2
->next
)
2556 if (dl2
->esize
>= dl
->esize
)
2558 if (cnt
>= raiddisks
)
2562 size
= size
/ chunk
;
2567 pr_err("not enough spare devices to create array.\n");
2571 /* We have a 'size' of which there are enough spaces.
2572 * We simply do a first-fit */
2574 for (dl
= ddf
->dlist
; dl
&& cnt
< raiddisks
; dl
=dl
->next
) {
2575 if (dl
->esize
< size
)
2587 validate_geometry_ddf_container(struct supertype
*st
,
2588 int level
, int layout
, int raiddisks
,
2589 int chunk
, unsigned long long size
,
2590 char *dev
, unsigned long long *freesize
,
2593 static int validate_geometry_ddf_bvd(struct supertype
*st
,
2594 int level
, int layout
, int raiddisks
,
2595 int *chunk
, unsigned long long size
,
2596 char *dev
, unsigned long long *freesize
,
2599 static int validate_geometry_ddf(struct supertype
*st
,
2600 int level
, int layout
, int raiddisks
,
2601 int *chunk
, unsigned long long size
,
2602 char *dev
, unsigned long long *freesize
,
2609 /* ddf potentially supports lots of things, but it depends on
2610 * what devices are offered (and maybe kernel version?)
2611 * If given unused devices, we will make a container.
2612 * If given devices in a container, we will make a BVD.
2613 * If given BVDs, we make an SVD, changing all the GUIDs in the process.
2616 if (chunk
&& *chunk
== UnSet
)
2617 *chunk
= DEFAULT_CHUNK
;
2620 if (level
== LEVEL_CONTAINER
) {
2621 /* Must be a fresh device to add to a container */
2622 return validate_geometry_ddf_container(st
, level
, layout
,
2623 raiddisks
, chunk
?*chunk
:0,
2624 size
, dev
, freesize
,
2629 /* Initial sanity check. Exclude illegal levels. */
2631 for (i
=0; ddf_level_num
[i
].num1
!= MAXINT
; i
++)
2632 if (ddf_level_num
[i
].num2
== level
)
2634 if (ddf_level_num
[i
].num1
== MAXINT
) {
2636 pr_err("DDF does not support level %d arrays\n",
2640 /* Should check layout? etc */
2642 if (st
->sb
&& freesize
) {
2643 /* --create was given a container to create in.
2644 * So we need to check that there are enough
2645 * free spaces and return the amount of space.
2646 * We may as well remember which drives were
2647 * chosen so that add_to_super/getinfo_super
2650 return reserve_space(st
, raiddisks
, size
, chunk
?*chunk
:0, freesize
);
2656 /* A container has already been opened, so we are
2657 * creating in there. Maybe a BVD, maybe an SVD.
2658 * Should make a distinction one day.
2660 return validate_geometry_ddf_bvd(st
, level
, layout
, raiddisks
,
2661 chunk
, size
, dev
, freesize
,
2664 /* This is the first device for the array.
2665 * If it is a container, we read it in and do automagic allocations,
2666 * no other devices should be given.
2667 * Otherwise it must be a member device of a container, and we
2668 * do manual allocation.
2669 * Later we should check for a BVD and make an SVD.
2671 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
2673 sra
= sysfs_read(fd
, 0, GET_VERSION
);
2675 if (sra
&& sra
->array
.major_version
== -1 &&
2676 strcmp(sra
->text_version
, "ddf") == 0) {
2679 /* find space for 'n' devices. */
2680 /* remember the devices */
2681 /* Somehow return the fact that we have enough */
2685 pr_err("ddf: Cannot create this array "
2686 "on device %s - a container is required.\n",
2690 if (errno
!= EBUSY
|| (fd
= open(dev
, O_RDONLY
, 0)) < 0) {
2692 pr_err("ddf: Cannot open %s: %s\n",
2693 dev
, strerror(errno
));
2696 /* Well, it is in use by someone, maybe a 'ddf' container. */
2697 cfd
= open_container(fd
);
2701 pr_err("ddf: Cannot use %s: %s\n",
2702 dev
, strerror(EBUSY
));
2705 sra
= sysfs_read(cfd
, 0, GET_VERSION
);
2707 if (sra
&& sra
->array
.major_version
== -1 &&
2708 strcmp(sra
->text_version
, "ddf") == 0) {
2709 /* This is a member of a ddf container. Load the container
2710 * and try to create a bvd
2712 struct ddf_super
*ddf
;
2713 if (load_super_ddf_all(st
, cfd
, (void **)&ddf
, NULL
) == 0) {
2715 st
->container_dev
= fd2devnum(cfd
);
2717 return validate_geometry_ddf_bvd(st
, level
, layout
,
2718 raiddisks
, chunk
, size
,
2723 } else /* device may belong to a different container */
2730 validate_geometry_ddf_container(struct supertype
*st
,
2731 int level
, int layout
, int raiddisks
,
2732 int chunk
, unsigned long long size
,
2733 char *dev
, unsigned long long *freesize
,
2737 unsigned long long ldsize
;
2739 if (level
!= LEVEL_CONTAINER
)
2744 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
2747 pr_err("ddf: Cannot open %s: %s\n",
2748 dev
, strerror(errno
));
2751 if (!get_dev_size(fd
, dev
, &ldsize
)) {
2757 *freesize
= avail_size_ddf(st
, ldsize
>> 9);
2764 static int validate_geometry_ddf_bvd(struct supertype
*st
,
2765 int level
, int layout
, int raiddisks
,
2766 int *chunk
, unsigned long long size
,
2767 char *dev
, unsigned long long *freesize
,
2771 struct ddf_super
*ddf
= st
->sb
;
2773 unsigned long long pos
= 0;
2774 unsigned long long maxsize
;
2777 /* ddf/bvd supports lots of things, but not containers */
2778 if (level
== LEVEL_CONTAINER
) {
2780 pr_err("DDF cannot create a container within an container\n");
2783 /* We must have the container info already read in. */
2788 /* General test: make sure there is space for
2789 * 'raiddisks' device extents of size 'size'.
2791 unsigned long long minsize
= size
;
2795 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
2801 e
= get_extents(ddf
, dl
);
2804 unsigned long long esize
;
2805 esize
= e
[i
].start
- pos
;
2806 if (esize
>= minsize
)
2808 pos
= e
[i
].start
+ e
[i
].size
;
2810 } while (e
[i
-1].size
);
2815 if (dcnt
< raiddisks
) {
2817 pr_err("ddf: Not enough devices with "
2818 "space for this array (%d < %d)\n",
2824 /* This device must be a member of the set */
2825 if (stat(dev
, &stb
) < 0)
2827 if ((S_IFMT
& stb
.st_mode
) != S_IFBLK
)
2829 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
) {
2830 if (dl
->major
== (int)major(stb
.st_rdev
) &&
2831 dl
->minor
== (int)minor(stb
.st_rdev
))
2836 pr_err("ddf: %s is not in the "
2841 e
= get_extents(ddf
, dl
);
2845 unsigned long long esize
;
2846 esize
= e
[i
].start
- pos
;
2847 if (esize
>= maxsize
)
2849 pos
= e
[i
].start
+ e
[i
].size
;
2851 } while (e
[i
-1].size
);
2852 *freesize
= maxsize
;
2858 static int load_super_ddf_all(struct supertype
*st
, int fd
,
2859 void **sbp
, char *devname
)
2862 struct ddf_super
*super
;
2863 struct mdinfo
*sd
, *best
= NULL
;
2869 sra
= sysfs_read(fd
, 0, GET_LEVEL
|GET_VERSION
|GET_DEVS
|GET_STATE
);
2872 if (sra
->array
.major_version
!= -1 ||
2873 sra
->array
.minor_version
!= -2 ||
2874 strcmp(sra
->text_version
, "ddf") != 0)
2877 if (posix_memalign((void**)&super
, 512, sizeof(*super
)) != 0)
2879 memset(super
, 0, sizeof(*super
));
2881 /* first, try each device, and choose the best ddf */
2882 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
2884 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
2885 dfd
= dev_open(nm
, O_RDONLY
);
2888 rv
= load_ddf_headers(dfd
, super
, NULL
);
2891 seq
= __be32_to_cpu(super
->active
->seq
);
2892 if (super
->active
->openflag
)
2894 if (!best
|| seq
> bestseq
) {
2902 /* OK, load this ddf */
2903 sprintf(nm
, "%d:%d", best
->disk
.major
, best
->disk
.minor
);
2904 dfd
= dev_open(nm
, O_RDONLY
);
2907 load_ddf_headers(dfd
, super
, NULL
);
2908 load_ddf_global(dfd
, super
, NULL
);
2910 /* Now we need the device-local bits */
2911 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
2914 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
2915 dfd
= dev_open(nm
, O_RDWR
);
2918 rv
= load_ddf_headers(dfd
, super
, NULL
);
2920 rv
= load_ddf_local(dfd
, super
, NULL
, 1);
2926 if (st
->ss
== NULL
) {
2927 st
->ss
= &super_ddf
;
2928 st
->minor_version
= 0;
2931 st
->container_dev
= fd2devnum(fd
);
2935 static int load_container_ddf(struct supertype
*st
, int fd
,
2938 return load_super_ddf_all(st
, fd
, &st
->sb
, devname
);
2941 #endif /* MDASSEMBLE */
2943 static struct mdinfo
*container_content_ddf(struct supertype
*st
, char *subarray
)
2945 /* Given a container loaded by load_super_ddf_all,
2946 * extract information about all the arrays into
2949 * For each vcl in conflist: create an mdinfo, fill it in,
2950 * then look for matching devices (phys_refnum) in dlist
2951 * and create appropriate device mdinfo.
2953 struct ddf_super
*ddf
= st
->sb
;
2954 struct mdinfo
*rest
= NULL
;
2957 for (vc
= ddf
->conflist
; vc
; vc
=vc
->next
)
2961 struct mdinfo
*this;
2966 (strtoul(subarray
, &ep
, 10) != vc
->vcnum
||
2970 this = xcalloc(1, sizeof(*this));
2974 this->array
.level
= map_num1(ddf_level_num
, vc
->conf
.prl
);
2975 this->array
.raid_disks
=
2976 __be16_to_cpu(vc
->conf
.prim_elmnt_count
);
2977 this->array
.layout
= rlq_to_layout(vc
->conf
.rlq
, vc
->conf
.prl
,
2978 this->array
.raid_disks
);
2979 this->array
.md_minor
= -1;
2980 this->array
.major_version
= -1;
2981 this->array
.minor_version
= -2;
2982 cptr
= (__u32
*)(vc
->conf
.guid
+ 16);
2983 this->array
.ctime
= DECADE
+ __be32_to_cpu(*cptr
);
2984 this->array
.utime
= DECADE
+
2985 __be32_to_cpu(vc
->conf
.timestamp
);
2986 this->array
.chunk_size
= 512 << vc
->conf
.chunk_shift
;
2989 if ((ddf
->virt
->entries
[i
].state
& DDF_state_inconsistent
) ||
2990 (ddf
->virt
->entries
[i
].init_state
& DDF_initstate_mask
) !=
2992 this->array
.state
= 0;
2993 this->resync_start
= 0;
2995 this->array
.state
= 1;
2996 this->resync_start
= MaxSector
;
2998 memcpy(this->name
, ddf
->virt
->entries
[i
].name
, 16);
3001 if (this->name
[j
] == ' ')
3004 memset(this->uuid
, 0, sizeof(this->uuid
));
3005 this->component_size
= __be64_to_cpu(vc
->conf
.blocks
);
3006 this->array
.size
= this->component_size
/ 2;
3007 this->container_member
= i
;
3009 ddf
->currentconf
= vc
;
3010 uuid_from_super_ddf(st
, this->uuid
);
3011 ddf
->currentconf
= NULL
;
3013 sprintf(this->text_version
, "/%s/%d",
3014 devnum2devname(st
->container_dev
),
3015 this->container_member
);
3017 for (i
= 0 ; i
< ddf
->mppe
; i
++) {
3023 if (vc
->conf
.phys_refnum
[i
] == 0xFFFFFFFF)
3026 for (pd
= __be16_to_cpu(ddf
->phys
->used_pdes
);
3028 if (ddf
->phys
->entries
[pd
].refnum
3029 == vc
->conf
.phys_refnum
[i
])
3034 stt
= __be16_to_cpu(ddf
->phys
->entries
[pd
].state
);
3035 if ((stt
& (DDF_Online
|DDF_Failed
|DDF_Rebuilding
))
3039 this->array
.working_disks
++;
3041 for (d
= ddf
->dlist
; d
; d
=d
->next
)
3042 if (d
->disk
.refnum
== vc
->conf
.phys_refnum
[i
])
3045 /* Haven't found that one yet, maybe there are others */
3048 dev
= xcalloc(1, sizeof(*dev
));
3049 dev
->next
= this->devs
;
3052 dev
->disk
.number
= __be32_to_cpu(d
->disk
.refnum
);
3053 dev
->disk
.major
= d
->major
;
3054 dev
->disk
.minor
= d
->minor
;
3055 dev
->disk
.raid_disk
= i
;
3056 dev
->disk
.state
= (1<<MD_DISK_SYNC
)|(1<<MD_DISK_ACTIVE
);
3057 dev
->recovery_start
= MaxSector
;
3059 dev
->events
= __be32_to_cpu(ddf
->primary
.seq
);
3060 dev
->data_offset
= __be64_to_cpu(vc
->lba_offset
[i
]);
3061 dev
->component_size
= __be64_to_cpu(vc
->conf
.blocks
);
3063 strcpy(dev
->name
, d
->devname
);
3069 static int store_super_ddf(struct supertype
*st
, int fd
)
3071 struct ddf_super
*ddf
= st
->sb
;
3072 unsigned long long dsize
;
3079 /* ->dlist and ->conflist will be set for updates, currently not
3082 if (ddf
->dlist
|| ddf
->conflist
)
3085 if (!get_dev_size(fd
, NULL
, &dsize
))
3088 if (posix_memalign(&buf
, 512, 512) != 0)
3090 memset(buf
, 0, 512);
3092 lseek64(fd
, dsize
-512, 0);
3093 rc
= write(fd
, buf
, 512);
3100 static int compare_super_ddf(struct supertype
*st
, struct supertype
*tst
)
3104 * 0 same, or first was empty, and second was copied
3105 * 1 second had wrong number
3107 * 3 wrong other info
3109 struct ddf_super
*first
= st
->sb
;
3110 struct ddf_super
*second
= tst
->sb
;
3118 if (memcmp(first
->anchor
.guid
, second
->anchor
.guid
, DDF_GUID_LEN
) != 0)
3121 /* FIXME should I look at anything else? */
3127 * A new array 'a' has been started which claims to be instance 'inst'
3128 * within container 'c'.
3129 * We need to confirm that the array matches the metadata in 'c' so
3130 * that we don't corrupt any metadata.
3132 static int ddf_open_new(struct supertype
*c
, struct active_array
*a
, char *inst
)
3134 dprintf("ddf: open_new %s\n", inst
);
3135 a
->info
.container_member
= atoi(inst
);
3140 * The array 'a' is to be marked clean in the metadata.
3141 * If '->resync_start' is not ~(unsigned long long)0, then the array is only
3142 * clean up to the point (in sectors). If that cannot be recorded in the
3143 * metadata, then leave it as dirty.
3145 * For DDF, we need to clear the DDF_state_inconsistent bit in the
3146 * !global! virtual_disk.virtual_entry structure.
3148 static int ddf_set_array_state(struct active_array
*a
, int consistent
)
3150 struct ddf_super
*ddf
= a
->container
->sb
;
3151 int inst
= a
->info
.container_member
;
3152 int old
= ddf
->virt
->entries
[inst
].state
;
3153 if (consistent
== 2) {
3154 /* Should check if a recovery should be started FIXME */
3156 if (!is_resync_complete(&a
->info
))
3160 ddf
->virt
->entries
[inst
].state
&= ~DDF_state_inconsistent
;
3162 ddf
->virt
->entries
[inst
].state
|= DDF_state_inconsistent
;
3163 if (old
!= ddf
->virt
->entries
[inst
].state
)
3164 ddf
->updates_pending
= 1;
3166 old
= ddf
->virt
->entries
[inst
].init_state
;
3167 ddf
->virt
->entries
[inst
].init_state
&= ~DDF_initstate_mask
;
3168 if (is_resync_complete(&a
->info
))
3169 ddf
->virt
->entries
[inst
].init_state
|= DDF_init_full
;
3170 else if (a
->info
.resync_start
== 0)
3171 ddf
->virt
->entries
[inst
].init_state
|= DDF_init_not
;
3173 ddf
->virt
->entries
[inst
].init_state
|= DDF_init_quick
;
3174 if (old
!= ddf
->virt
->entries
[inst
].init_state
)
3175 ddf
->updates_pending
= 1;
3177 dprintf("ddf mark %d %s %llu\n", inst
, consistent
?"clean":"dirty",
3178 a
->info
.resync_start
);
3182 #define container_of(ptr, type, member) ({ \
3183 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
3184 (type *)( (char *)__mptr - offsetof(type,member) );})
3186 * The state of each disk is stored in the global phys_disk structure
3187 * in phys_disk.entries[n].state.
3188 * This makes various combinations awkward.
3189 * - When a device fails in any array, it must be failed in all arrays
3190 * that include a part of this device.
3191 * - When a component is rebuilding, we cannot include it officially in the
3192 * array unless this is the only array that uses the device.
3194 * So: when transitioning:
3195 * Online -> failed, just set failed flag. monitor will propagate
3196 * spare -> online, the device might need to be added to the array.
3197 * spare -> failed, just set failed. Don't worry if in array or not.
3199 static void ddf_set_disk(struct active_array
*a
, int n
, int state
)
3201 struct ddf_super
*ddf
= a
->container
->sb
;
3202 unsigned int inst
= a
->info
.container_member
;
3203 struct vd_config
*vc
= find_vdcr(ddf
, inst
);
3204 int pd
= find_phys(ddf
, vc
->phys_refnum
[n
]);
3210 dprintf("ddf: cannot find instance %d!!\n", inst
);
3213 /* Find the matching slot in 'info'. */
3214 for (mdi
= a
->info
.devs
; mdi
; mdi
= mdi
->next
)
3215 if (mdi
->disk
.raid_disk
== n
)
3220 /* and find the 'dl' entry corresponding to that. */
3221 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
3222 if (mdi
->state_fd
>= 0 &&
3223 mdi
->disk
.major
== dl
->major
&&
3224 mdi
->disk
.minor
== dl
->minor
)
3229 if (pd
< 0 || pd
!= dl
->pdnum
) {
3230 /* disk doesn't currently exist or has changed.
3231 * If it is now in_sync, insert it. */
3232 if ((state
& DS_INSYNC
) && ! (state
& DS_FAULTY
)) {
3235 vc
->phys_refnum
[n
] = dl
->disk
.refnum
;
3236 vcl
= container_of(vc
, struct vcl
, conf
);
3237 vcl
->lba_offset
[n
] = mdi
->data_offset
;
3238 ddf
->phys
->entries
[pd
].type
&=
3239 ~__cpu_to_be16(DDF_Global_Spare
);
3240 ddf
->phys
->entries
[pd
].type
|=
3241 __cpu_to_be16(DDF_Active_in_VD
);
3242 ddf
->updates_pending
= 1;
3245 int old
= ddf
->phys
->entries
[pd
].state
;
3246 if (state
& DS_FAULTY
)
3247 ddf
->phys
->entries
[pd
].state
|= __cpu_to_be16(DDF_Failed
);
3248 if (state
& DS_INSYNC
) {
3249 ddf
->phys
->entries
[pd
].state
|= __cpu_to_be16(DDF_Online
);
3250 ddf
->phys
->entries
[pd
].state
&= __cpu_to_be16(~DDF_Rebuilding
);
3252 if (old
!= ddf
->phys
->entries
[pd
].state
)
3253 ddf
->updates_pending
= 1;
3256 dprintf("ddf: set_disk %d to %x\n", n
, state
);
3258 /* Now we need to check the state of the array and update
3259 * virtual_disk.entries[n].state.
3260 * It needs to be one of "optimal", "degraded", "failed".
3261 * I don't understand 'deleted' or 'missing'.
3264 for (i
=0; i
< a
->info
.array
.raid_disks
; i
++) {
3265 pd
= find_phys(ddf
, vc
->phys_refnum
[i
]);
3268 st
= __be16_to_cpu(ddf
->phys
->entries
[pd
].state
);
3269 if ((st
& (DDF_Online
|DDF_Failed
|DDF_Rebuilding
))
3273 state
= DDF_state_degraded
;
3274 if (working
== a
->info
.array
.raid_disks
)
3275 state
= DDF_state_optimal
;
3276 else switch(vc
->prl
) {
3280 state
= DDF_state_failed
;
3284 state
= DDF_state_failed
;
3285 else if (working
== 2 && state
== DDF_state_degraded
)
3286 state
= DDF_state_part_optimal
;
3290 if (working
< a
->info
.array
.raid_disks
-1)
3291 state
= DDF_state_failed
;
3294 if (working
< a
->info
.array
.raid_disks
-2)
3295 state
= DDF_state_failed
;
3296 else if (working
== a
->info
.array
.raid_disks
-1)
3297 state
= DDF_state_part_optimal
;
3301 if (ddf
->virt
->entries
[inst
].state
!=
3302 ((ddf
->virt
->entries
[inst
].state
& ~DDF_state_mask
)
3305 ddf
->virt
->entries
[inst
].state
=
3306 (ddf
->virt
->entries
[inst
].state
& ~DDF_state_mask
)
3308 ddf
->updates_pending
= 1;
3313 static void ddf_sync_metadata(struct supertype
*st
)
3317 * Write all data to all devices.
3318 * Later, we might be able to track whether only local changes
3319 * have been made, or whether any global data has been changed,
3320 * but ddf is sufficiently weird that it probably always
3321 * changes global data ....
3323 struct ddf_super
*ddf
= st
->sb
;
3324 if (!ddf
->updates_pending
)
3326 ddf
->updates_pending
= 0;
3327 __write_init_super_ddf(st
);
3328 dprintf("ddf: sync_metadata\n");
3331 static void ddf_process_update(struct supertype
*st
,
3332 struct metadata_update
*update
)
3334 /* Apply this update to the metadata.
3335 * The first 4 bytes are a DDF_*_MAGIC which guides
3337 * Possible update are:
3338 * DDF_PHYS_RECORDS_MAGIC
3339 * Add a new physical device or remove an old one.
3340 * Changes to this record only happen implicitly.
3341 * used_pdes is the device number.
3342 * DDF_VIRT_RECORDS_MAGIC
3343 * Add a new VD. Possibly also change the 'access' bits.
3344 * populated_vdes is the entry number.
3346 * New or updated VD. the VIRT_RECORD must already
3347 * exist. For an update, phys_refnum and lba_offset
3348 * (at least) are updated, and the VD_CONF must
3349 * be written to precisely those devices listed with
3351 * DDF_SPARE_ASSIGN_MAGIC
3352 * replacement Spare Assignment Record... but for which device?
3355 * - to create a new array, we send a VIRT_RECORD and
3356 * a VD_CONF. Then assemble and start the array.
3357 * - to activate a spare we send a VD_CONF to add the phys_refnum
3358 * and offset. This will also mark the spare as active with
3359 * a spare-assignment record.
3361 struct ddf_super
*ddf
= st
->sb
;
3362 __u32
*magic
= (__u32
*)update
->buf
;
3363 struct phys_disk
*pd
;
3364 struct virtual_disk
*vd
;
3365 struct vd_config
*vc
;
3370 unsigned int pdnum
, pd2
;
3372 dprintf("Process update %x\n", *magic
);
3375 case DDF_PHYS_RECORDS_MAGIC
:
3377 if (update
->len
!= (sizeof(struct phys_disk
) +
3378 sizeof(struct phys_disk_entry
)))
3380 pd
= (struct phys_disk
*)update
->buf
;
3382 ent
= __be16_to_cpu(pd
->used_pdes
);
3383 if (ent
>= __be16_to_cpu(ddf
->phys
->max_pdes
))
3385 if (pd
->entries
[0].state
& __cpu_to_be16(DDF_Missing
)) {
3387 /* removing this disk. */
3388 ddf
->phys
->entries
[ent
].state
|= __cpu_to_be16(DDF_Missing
);
3389 for (dlp
= &ddf
->dlist
; *dlp
; dlp
= &(*dlp
)->next
) {
3390 struct dl
*dl
= *dlp
;
3391 if (dl
->pdnum
== (signed)ent
) {
3394 /* FIXME this doesn't free
3401 ddf
->updates_pending
= 1;
3404 if (!all_ff(ddf
->phys
->entries
[ent
].guid
))
3406 ddf
->phys
->entries
[ent
] = pd
->entries
[0];
3407 ddf
->phys
->used_pdes
= __cpu_to_be16(1 +
3408 __be16_to_cpu(ddf
->phys
->used_pdes
));
3409 ddf
->updates_pending
= 1;
3410 if (ddf
->add_list
) {
3411 struct active_array
*a
;
3412 struct dl
*al
= ddf
->add_list
;
3413 ddf
->add_list
= al
->next
;
3415 al
->next
= ddf
->dlist
;
3418 /* As a device has been added, we should check
3419 * for any degraded devices that might make
3420 * use of this spare */
3421 for (a
= st
->arrays
; a
; a
=a
->next
)
3422 a
->check_degraded
= 1;
3426 case DDF_VIRT_RECORDS_MAGIC
:
3428 if (update
->len
!= (sizeof(struct virtual_disk
) +
3429 sizeof(struct virtual_entry
)))
3431 vd
= (struct virtual_disk
*)update
->buf
;
3433 ent
= __be16_to_cpu(vd
->populated_vdes
);
3434 if (ent
>= __be16_to_cpu(ddf
->virt
->max_vdes
))
3436 if (!all_ff(ddf
->virt
->entries
[ent
].guid
))
3438 ddf
->virt
->entries
[ent
] = vd
->entries
[0];
3439 ddf
->virt
->populated_vdes
= __cpu_to_be16(1 +
3440 __be16_to_cpu(ddf
->virt
->populated_vdes
));
3441 ddf
->updates_pending
= 1;
3444 case DDF_VD_CONF_MAGIC
:
3445 dprintf("len %d %d\n", update
->len
, ddf
->conf_rec_len
);
3447 mppe
= __be16_to_cpu(ddf
->anchor
.max_primary_element_entries
);
3448 if ((unsigned)update
->len
!= ddf
->conf_rec_len
* 512)
3450 vc
= (struct vd_config
*)update
->buf
;
3451 for (vcl
= ddf
->conflist
; vcl
; vcl
= vcl
->next
)
3452 if (memcmp(vcl
->conf
.guid
, vc
->guid
, DDF_GUID_LEN
) == 0)
3454 dprintf("vcl = %p\n", vcl
);
3456 /* An update, just copy the phys_refnum and lba_offset
3459 memcpy(vcl
->conf
.phys_refnum
, vc
->phys_refnum
,
3460 mppe
* (sizeof(__u32
) + sizeof(__u64
)));
3465 vcl
= update
->space
;
3466 update
->space
= NULL
;
3467 vcl
->next
= ddf
->conflist
;
3468 memcpy(&vcl
->conf
, vc
, update
->len
);
3469 vcl
->lba_offset
= (__u64
*)
3470 &vcl
->conf
.phys_refnum
[mppe
];
3472 ent
< __be16_to_cpu(ddf
->virt
->populated_vdes
);
3474 if (memcmp(vc
->guid
, ddf
->virt
->entries
[ent
].guid
,
3475 DDF_GUID_LEN
) == 0) {
3479 ddf
->conflist
= vcl
;
3481 /* Set DDF_Transition on all Failed devices - to help
3482 * us detect those that are no longer in use
3484 for (pdnum
= 0; pdnum
< __be16_to_cpu(ddf
->phys
->used_pdes
); pdnum
++)
3485 if (ddf
->phys
->entries
[pdnum
].state
3486 & __be16_to_cpu(DDF_Failed
))
3487 ddf
->phys
->entries
[pdnum
].state
3488 |= __be16_to_cpu(DDF_Transition
);
3489 /* Now make sure vlist is correct for each dl. */
3490 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
) {
3492 unsigned int vn
= 0;
3493 int in_degraded
= 0;
3494 for (vcl
= ddf
->conflist
; vcl
; vcl
= vcl
->next
)
3495 for (dn
=0; dn
< ddf
->mppe
; dn
++)
3496 if (vcl
->conf
.phys_refnum
[dn
] ==
3499 dprintf("dev %d has %p at %d\n",
3500 dl
->pdnum
, vcl
, vn
);
3501 /* Clear the Transition flag */
3502 if (ddf
->phys
->entries
[dl
->pdnum
].state
3503 & __be16_to_cpu(DDF_Failed
))
3504 ddf
->phys
->entries
[dl
->pdnum
].state
&=
3505 ~__be16_to_cpu(DDF_Transition
);
3507 dl
->vlist
[vn
++] = vcl
;
3508 vstate
= ddf
->virt
->entries
[vcl
->vcnum
].state
3510 if (vstate
== DDF_state_degraded
||
3511 vstate
== DDF_state_part_optimal
)
3515 while (vn
< ddf
->max_part
)
3516 dl
->vlist
[vn
++] = NULL
;
3518 ddf
->phys
->entries
[dl
->pdnum
].type
&=
3519 ~__cpu_to_be16(DDF_Global_Spare
);
3520 if (!(ddf
->phys
->entries
[dl
->pdnum
].type
&
3521 __cpu_to_be16(DDF_Active_in_VD
))) {
3522 ddf
->phys
->entries
[dl
->pdnum
].type
|=
3523 __cpu_to_be16(DDF_Active_in_VD
);
3525 ddf
->phys
->entries
[dl
->pdnum
].state
|=
3526 __cpu_to_be16(DDF_Rebuilding
);
3530 ddf
->phys
->entries
[dl
->pdnum
].type
&=
3531 ~__cpu_to_be16(DDF_Global_Spare
);
3532 ddf
->phys
->entries
[dl
->pdnum
].type
|=
3533 __cpu_to_be16(DDF_Spare
);
3535 if (!dl
->vlist
[0] && !dl
->spare
) {
3536 ddf
->phys
->entries
[dl
->pdnum
].type
|=
3537 __cpu_to_be16(DDF_Global_Spare
);
3538 ddf
->phys
->entries
[dl
->pdnum
].type
&=
3539 ~__cpu_to_be16(DDF_Spare
|
3544 /* Now remove any 'Failed' devices that are not part
3545 * of any VD. They will have the Transition flag set.
3546 * Once done, we need to update all dl->pdnum numbers.
3549 for (pdnum
= 0; pdnum
< __be16_to_cpu(ddf
->phys
->used_pdes
); pdnum
++)
3550 if ((ddf
->phys
->entries
[pdnum
].state
3551 & __be16_to_cpu(DDF_Failed
))
3552 && (ddf
->phys
->entries
[pdnum
].state
3553 & __be16_to_cpu(DDF_Transition
)))
3554 /* skip this one */;
3555 else if (pdnum
== pd2
)
3558 ddf
->phys
->entries
[pd2
] = ddf
->phys
->entries
[pdnum
];
3559 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
3560 if (dl
->pdnum
== (int)pdnum
)
3564 ddf
->phys
->used_pdes
= __cpu_to_be16(pd2
);
3565 while (pd2
< pdnum
) {
3566 memset(ddf
->phys
->entries
[pd2
].guid
, 0xff, DDF_GUID_LEN
);
3570 ddf
->updates_pending
= 1;
3572 case DDF_SPARE_ASSIGN_MAGIC
:
3577 static void ddf_prepare_update(struct supertype
*st
,
3578 struct metadata_update
*update
)
3580 /* This update arrived at managemon.
3581 * We are about to pass it to monitor.
3582 * If a malloc is needed, do it here.
3584 struct ddf_super
*ddf
= st
->sb
;
3585 __u32
*magic
= (__u32
*)update
->buf
;
3586 if (*magic
== DDF_VD_CONF_MAGIC
)
3587 if (posix_memalign(&update
->space
, 512,
3588 offsetof(struct vcl
, conf
)
3589 + ddf
->conf_rec_len
* 512) != 0)
3590 update
->space
= NULL
;
3594 * Check if the array 'a' is degraded but not failed.
3595 * If it is, find as many spares as are available and needed and
3596 * arrange for their inclusion.
3597 * We only choose devices which are not already in the array,
3598 * and prefer those with a spare-assignment to this array.
3599 * otherwise we choose global spares - assuming always that
3600 * there is enough room.
3601 * For each spare that we assign, we return an 'mdinfo' which
3602 * describes the position for the device in the array.
3603 * We also add to 'updates' a DDF_VD_CONF_MAGIC update with
3604 * the new phys_refnum and lba_offset values.
3606 * Only worry about BVDs at the moment.
3608 static struct mdinfo
*ddf_activate_spare(struct active_array
*a
,
3609 struct metadata_update
**updates
)
3613 struct ddf_super
*ddf
= a
->container
->sb
;
3615 struct mdinfo
*rv
= NULL
;
3617 struct metadata_update
*mu
;
3620 struct vd_config
*vc
;
3623 for (d
= a
->info
.devs
; d
; d
= d
->next
) {
3624 if ((d
->curr_state
& DS_FAULTY
) &&
3626 /* wait for Removal to happen */
3628 if (d
->state_fd
>= 0)
3632 dprintf("ddf_activate: working=%d (%d) level=%d\n", working
, a
->info
.array
.raid_disks
,
3633 a
->info
.array
.level
);
3634 if (working
== a
->info
.array
.raid_disks
)
3635 return NULL
; /* array not degraded */
3636 switch (a
->info
.array
.level
) {
3639 return NULL
; /* failed */
3643 if (working
< a
->info
.array
.raid_disks
- 1)
3644 return NULL
; /* failed */
3647 if (working
< a
->info
.array
.raid_disks
- 2)
3648 return NULL
; /* failed */
3650 default: /* concat or stripe */
3651 return NULL
; /* failed */
3654 /* For each slot, if it is not working, find a spare */
3656 for (i
= 0; i
< a
->info
.array
.raid_disks
; i
++) {
3657 for (d
= a
->info
.devs
; d
; d
= d
->next
)
3658 if (d
->disk
.raid_disk
== i
)
3660 dprintf("found %d: %p %x\n", i
, d
, d
?d
->curr_state
:0);
3661 if (d
&& (d
->state_fd
>= 0))
3664 /* OK, this device needs recovery. Find a spare */
3666 for ( ; dl
; dl
= dl
->next
) {
3667 unsigned long long esize
;
3668 unsigned long long pos
;
3671 int is_dedicated
= 0;
3674 /* If in this array, skip */
3675 for (d2
= a
->info
.devs
; d2
; d2
= d2
->next
)
3676 if (d2
->state_fd
>= 0 &&
3677 d2
->disk
.major
== dl
->major
&&
3678 d2
->disk
.minor
== dl
->minor
) {
3679 dprintf("%x:%x already in array\n", dl
->major
, dl
->minor
);
3684 if (ddf
->phys
->entries
[dl
->pdnum
].type
&
3685 __cpu_to_be16(DDF_Spare
)) {
3686 /* Check spare assign record */
3688 if (dl
->spare
->type
& DDF_spare_dedicated
) {
3689 /* check spare_ents for guid */
3691 j
< __be16_to_cpu(dl
->spare
->populated
);
3693 if (memcmp(dl
->spare
->spare_ents
[j
].guid
,
3694 ddf
->virt
->entries
[a
->info
.container_member
].guid
,
3701 } else if (ddf
->phys
->entries
[dl
->pdnum
].type
&
3702 __cpu_to_be16(DDF_Global_Spare
)) {
3705 if ( ! (is_dedicated
||
3706 (is_global
&& global_ok
))) {
3707 dprintf("%x:%x not suitable: %d %d\n", dl
->major
, dl
->minor
,
3708 is_dedicated
, is_global
);
3712 /* We are allowed to use this device - is there space?
3713 * We need a->info.component_size sectors */
3714 ex
= get_extents(ddf
, dl
);
3716 dprintf("cannot get extents\n");
3723 esize
= ex
[j
].start
- pos
;
3724 if (esize
>= a
->info
.component_size
)
3726 pos
= ex
[j
].start
+ ex
[j
].size
;
3728 } while (ex
[j
-1].size
);
3731 if (esize
< a
->info
.component_size
) {
3732 dprintf("%x:%x has no room: %llu %llu\n",
3733 dl
->major
, dl
->minor
,
3734 esize
, a
->info
.component_size
);
3739 /* Cool, we have a device with some space at pos */
3740 di
= xcalloc(1, sizeof(*di
));
3741 di
->disk
.number
= i
;
3742 di
->disk
.raid_disk
= i
;
3743 di
->disk
.major
= dl
->major
;
3744 di
->disk
.minor
= dl
->minor
;
3746 di
->recovery_start
= 0;
3747 di
->data_offset
= pos
;
3748 di
->component_size
= a
->info
.component_size
;
3749 di
->container_member
= dl
->pdnum
;
3752 dprintf("%x:%x to be %d at %llu\n", dl
->major
, dl
->minor
,
3757 if (!dl
&& ! global_ok
) {
3758 /* not enough dedicated spares, try global */
3766 /* No spares found */
3768 /* Now 'rv' has a list of devices to return.
3769 * Create a metadata_update record to update the
3770 * phys_refnum and lba_offset values
3772 mu
= xmalloc(sizeof(*mu
));
3773 if (posix_memalign(&mu
->space
, 512, sizeof(struct vcl
)) != 0) {
3777 mu
->buf
= xmalloc(ddf
->conf_rec_len
* 512);
3778 mu
->len
= ddf
->conf_rec_len
* 512;
3780 mu
->space_list
= NULL
;
3781 mu
->next
= *updates
;
3782 vc
= find_vdcr(ddf
, a
->info
.container_member
);
3783 memcpy(mu
->buf
, vc
, ddf
->conf_rec_len
* 512);
3785 vc
= (struct vd_config
*)mu
->buf
;
3786 lba
= (__u64
*)&vc
->phys_refnum
[ddf
->mppe
];
3787 for (di
= rv
; di
; di
= di
->next
) {
3788 vc
->phys_refnum
[di
->disk
.raid_disk
] =
3789 ddf
->phys
->entries
[dl
->pdnum
].refnum
;
3790 lba
[di
->disk
.raid_disk
] = di
->data_offset
;
3795 #endif /* MDASSEMBLE */
3797 static int ddf_level_to_layout(int level
)
3804 return ALGORITHM_LEFT_SYMMETRIC
;
3806 return ALGORITHM_ROTATING_N_CONTINUE
;
3814 static void default_geometry_ddf(struct supertype
*st
, int *level
, int *layout
, int *chunk
)
3816 if (level
&& *level
== UnSet
)
3817 *level
= LEVEL_CONTAINER
;
3819 if (level
&& layout
&& *layout
== UnSet
)
3820 *layout
= ddf_level_to_layout(*level
);
3823 struct superswitch super_ddf
= {
3825 .examine_super
= examine_super_ddf
,
3826 .brief_examine_super
= brief_examine_super_ddf
,
3827 .brief_examine_subarrays
= brief_examine_subarrays_ddf
,
3828 .export_examine_super
= export_examine_super_ddf
,
3829 .detail_super
= detail_super_ddf
,
3830 .brief_detail_super
= brief_detail_super_ddf
,
3831 .validate_geometry
= validate_geometry_ddf
,
3832 .write_init_super
= write_init_super_ddf
,
3833 .add_to_super
= add_to_super_ddf
,
3834 .remove_from_super
= remove_from_super_ddf
,
3835 .load_container
= load_container_ddf
,
3837 .match_home
= match_home_ddf
,
3838 .uuid_from_super
= uuid_from_super_ddf
,
3839 .getinfo_super
= getinfo_super_ddf
,
3840 .update_super
= update_super_ddf
,
3842 .avail_size
= avail_size_ddf
,
3844 .compare_super
= compare_super_ddf
,
3846 .load_super
= load_super_ddf
,
3847 .init_super
= init_super_ddf
,
3848 .store_super
= store_super_ddf
,
3849 .free_super
= free_super_ddf
,
3850 .match_metadata_desc
= match_metadata_desc_ddf
,
3851 .container_content
= container_content_ddf
,
3852 .default_geometry
= default_geometry_ddf
,
3858 .open_new
= ddf_open_new
,
3859 .set_array_state
= ddf_set_array_state
,
3860 .set_disk
= ddf_set_disk
,
3861 .sync_metadata
= ddf_sync_metadata
,
3862 .process_update
= ddf_process_update
,
3863 .prepare_update
= ddf_prepare_update
,
3864 .activate_spare
= ddf_activate_spare
,