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 #define DDF_NOTFOUND (~0U)
48 #define DDF_CONTAINER (DDF_NOTFOUND-1)
50 /* Default for safe_mode_delay. Same value as for IMSM.
52 static const int DDF_SAFE_MODE_DELAY
= 4000;
54 /* The DDF metadata handling.
55 * DDF metadata lives at the end of the device.
56 * The last 512 byte block provides an 'anchor' which is used to locate
57 * the rest of the metadata which usually lives immediately behind the anchor.
60 * - all multibyte numeric fields are bigendian.
61 * - all strings are space padded.
65 typedef struct __be16
{
68 #define be16_eq(x, y) ((x)._v16 == (y)._v16)
69 #define be16_and(x, y) ((x)._v16 & (y)._v16)
70 #define be16_or(x, y) ((x)._v16 | (y)._v16)
71 #define be16_clear(x, y) ((x)._v16 &= ~(y)._v16)
72 #define be16_set(x, y) ((x)._v16 |= (y)._v16)
74 typedef struct __be32
{
77 #define be32_eq(x, y) ((x)._v32 == (y)._v32)
79 typedef struct __be64
{
82 #define be64_eq(x, y) ((x)._v64 == (y)._v64)
84 #define be16_to_cpu(be) __be16_to_cpu((be)._v16)
85 static inline be16
cpu_to_be16(__u16 x
)
87 be16 be
= { ._v16
= __cpu_to_be16(x
) };
91 #define be32_to_cpu(be) __be32_to_cpu((be)._v32)
92 static inline be32
cpu_to_be32(__u32 x
)
94 be32 be
= { ._v32
= __cpu_to_be32(x
) };
98 #define be64_to_cpu(be) __be64_to_cpu((be)._v64)
99 static inline be64
cpu_to_be64(__u64 x
)
101 be64 be
= { ._v64
= __cpu_to_be64(x
) };
105 /* Primary Raid Level (PRL) */
106 #define DDF_RAID0 0x00
107 #define DDF_RAID1 0x01
108 #define DDF_RAID3 0x03
109 #define DDF_RAID4 0x04
110 #define DDF_RAID5 0x05
111 #define DDF_RAID1E 0x11
112 #define DDF_JBOD 0x0f
113 #define DDF_CONCAT 0x1f
114 #define DDF_RAID5E 0x15
115 #define DDF_RAID5EE 0x25
116 #define DDF_RAID6 0x06
118 /* Raid Level Qualifier (RLQ) */
119 #define DDF_RAID0_SIMPLE 0x00
120 #define DDF_RAID1_SIMPLE 0x00 /* just 2 devices in this plex */
121 #define DDF_RAID1_MULTI 0x01 /* exactly 3 devices in this plex */
122 #define DDF_RAID3_0 0x00 /* parity in first extent */
123 #define DDF_RAID3_N 0x01 /* parity in last extent */
124 #define DDF_RAID4_0 0x00 /* parity in first extent */
125 #define DDF_RAID4_N 0x01 /* parity in last extent */
126 /* these apply to raid5e and raid5ee as well */
127 #define DDF_RAID5_0_RESTART 0x00 /* same as 'right asymmetric' - layout 1 */
128 #define DDF_RAID6_0_RESTART 0x01 /* raid6 different from raid5 here!!! */
129 #define DDF_RAID5_N_RESTART 0x02 /* same as 'left asymmetric' - layout 0 */
130 #define DDF_RAID5_N_CONTINUE 0x03 /* same as 'left symmetric' - layout 2 */
132 #define DDF_RAID1E_ADJACENT 0x00 /* raid10 nearcopies==2 */
133 #define DDF_RAID1E_OFFSET 0x01 /* raid10 offsetcopies==2 */
135 /* Secondary RAID Level (SRL) */
136 #define DDF_2STRIPED 0x00 /* This is weirder than RAID0 !! */
137 #define DDF_2MIRRORED 0x01
138 #define DDF_2CONCAT 0x02
139 #define DDF_2SPANNED 0x03 /* This is also weird - be careful */
142 #define DDF_HEADER_MAGIC cpu_to_be32(0xDE11DE11)
143 #define DDF_CONTROLLER_MAGIC cpu_to_be32(0xAD111111)
144 #define DDF_PHYS_RECORDS_MAGIC cpu_to_be32(0x22222222)
145 #define DDF_PHYS_DATA_MAGIC cpu_to_be32(0x33333333)
146 #define DDF_VIRT_RECORDS_MAGIC cpu_to_be32(0xDDDDDDDD)
147 #define DDF_VD_CONF_MAGIC cpu_to_be32(0xEEEEEEEE)
148 #define DDF_SPARE_ASSIGN_MAGIC cpu_to_be32(0x55555555)
149 #define DDF_VU_CONF_MAGIC cpu_to_be32(0x88888888)
150 #define DDF_VENDOR_LOG_MAGIC cpu_to_be32(0x01dBEEF0)
151 #define DDF_BBM_LOG_MAGIC cpu_to_be32(0xABADB10C)
153 #define DDF_GUID_LEN 24
154 #define DDF_REVISION_0 "01.00.00"
155 #define DDF_REVISION_2 "01.02.00"
158 be32 magic
; /* DDF_HEADER_MAGIC */
160 char guid
[DDF_GUID_LEN
];
161 char revision
[8]; /* 01.02.00 */
162 be32 seq
; /* starts at '1' */
167 __u8 pad0
; /* 0xff */
168 __u8 pad1
[12]; /* 12 * 0xff */
169 /* 64 bytes so far */
170 __u8 header_ext
[32]; /* reserved: fill with 0xff */
174 __u8 pad2
[3]; /* 0xff */
175 be32 workspace_len
; /* sectors for vendor space -
176 * at least 32768(sectors) */
178 be16 max_pd_entries
; /* one of 15, 63, 255, 1023, 4095 */
179 be16 max_vd_entries
; /* 2^(4,6,8,10,12)-1 : i.e. as above */
180 be16 max_partitions
; /* i.e. max num of configuration
181 record entries per disk */
182 be16 config_record_len
; /* 1 +ROUNDUP(max_primary_element_entries
184 be16 max_primary_element_entries
; /* 16, 64, 256, 1024, or 4096 */
185 __u8 pad3
[54]; /* 0xff */
186 /* 192 bytes so far */
187 be32 controller_section_offset
;
188 be32 controller_section_length
;
189 be32 phys_section_offset
;
190 be32 phys_section_length
;
191 be32 virt_section_offset
;
192 be32 virt_section_length
;
193 be32 config_section_offset
;
194 be32 config_section_length
;
195 be32 data_section_offset
;
196 be32 data_section_length
;
197 be32 bbm_section_offset
;
198 be32 bbm_section_length
;
199 be32 diag_space_offset
;
200 be32 diag_space_length
;
203 /* 256 bytes so far */
204 __u8 pad4
[256]; /* 0xff */
208 #define DDF_HEADER_ANCHOR 0x00
209 #define DDF_HEADER_PRIMARY 0x01
210 #define DDF_HEADER_SECONDARY 0x02
212 /* The content of the 'controller section' - global scope */
213 struct ddf_controller_data
{
214 be32 magic
; /* DDF_CONTROLLER_MAGIC */
216 char guid
[DDF_GUID_LEN
];
217 struct controller_type
{
224 __u8 pad
[8]; /* 0xff */
225 __u8 vendor_data
[448];
228 /* The content of phys_section - global scope */
230 be32 magic
; /* DDF_PHYS_RECORDS_MAGIC */
235 struct phys_disk_entry
{
236 char guid
[DDF_GUID_LEN
];
240 be64 config_size
; /* DDF structures must be after here */
241 char path
[18]; /* another horrible structure really */
246 /* phys_disk_entry.type is a bitmap - bigendian remember */
247 #define DDF_Forced_PD_GUID 1
248 #define DDF_Active_in_VD 2
249 #define DDF_Global_Spare 4 /* VD_CONF records are ignored */
250 #define DDF_Spare 8 /* overrides Global_spare */
251 #define DDF_Foreign 16
252 #define DDF_Legacy 32 /* no DDF on this device */
254 #define DDF_Interface_mask 0xf00
255 #define DDF_Interface_SCSI 0x100
256 #define DDF_Interface_SAS 0x200
257 #define DDF_Interface_SATA 0x300
258 #define DDF_Interface_FC 0x400
260 /* phys_disk_entry.state is a bigendian bitmap */
262 #define DDF_Failed 2 /* overrides 1,4,8 */
263 #define DDF_Rebuilding 4
264 #define DDF_Transition 8
266 #define DDF_ReadErrors 32
267 #define DDF_Missing 64
269 /* The content of the virt_section global scope */
270 struct virtual_disk
{
271 be32 magic
; /* DDF_VIRT_RECORDS_MAGIC */
276 struct virtual_entry
{
277 char guid
[DDF_GUID_LEN
];
279 __u16 pad0
; /* 0xffff */
289 /* virtual_entry.type is a bitmap - bigendian */
291 #define DDF_Enforce_Groups 2
292 #define DDF_Unicode 4
293 #define DDF_Owner_Valid 8
295 /* virtual_entry.state is a bigendian bitmap */
296 #define DDF_state_mask 0x7
297 #define DDF_state_optimal 0x0
298 #define DDF_state_degraded 0x1
299 #define DDF_state_deleted 0x2
300 #define DDF_state_missing 0x3
301 #define DDF_state_failed 0x4
302 #define DDF_state_part_optimal 0x5
304 #define DDF_state_morphing 0x8
305 #define DDF_state_inconsistent 0x10
307 /* virtual_entry.init_state is a bigendian bitmap */
308 #define DDF_initstate_mask 0x03
309 #define DDF_init_not 0x00
310 #define DDF_init_quick 0x01 /* initialisation is progress.
311 * i.e. 'state_inconsistent' */
312 #define DDF_init_full 0x02
314 #define DDF_access_mask 0xc0
315 #define DDF_access_rw 0x00
316 #define DDF_access_ro 0x80
317 #define DDF_access_blocked 0xc0
319 /* The content of the config_section - local scope
320 * It has multiple records each config_record_len sectors
321 * They can be vd_config or spare_assign
325 be32 magic
; /* DDF_VD_CONF_MAGIC */
327 char guid
[DDF_GUID_LEN
];
331 be16 prim_elmnt_count
;
332 __u8 chunk_shift
; /* 0 == 512, 1==1024 etc */
335 __u8 sec_elmnt_count
;
338 be64 blocks
; /* blocks per component could be different
339 * on different component devices...(only
340 * for concat I hope) */
341 be64 array_blocks
; /* blocks in array */
349 __u8 v0
[32]; /* reserved- 0xff */
350 __u8 v1
[32]; /* reserved- 0xff */
351 __u8 v2
[16]; /* reserved- 0xff */
352 __u8 v3
[16]; /* reserved- 0xff */
354 be32 phys_refnum
[0]; /* refnum of each disk in sequence */
355 /*__u64 lba_offset[0]; LBA offset in each phys. Note extents in a
356 bvd are always the same size */
358 #define LBA_OFFSET(ddf, vd) ((be64 *) &(vd)->phys_refnum[(ddf)->mppe])
360 /* vd_config.cache_pol[7] is a bitmap */
361 #define DDF_cache_writeback 1 /* else writethrough */
362 #define DDF_cache_wadaptive 2 /* only applies if writeback */
363 #define DDF_cache_readahead 4
364 #define DDF_cache_radaptive 8 /* only if doing read-ahead */
365 #define DDF_cache_ifnobatt 16 /* even to write cache if battery is poor */
366 #define DDF_cache_wallowed 32 /* enable write caching */
367 #define DDF_cache_rallowed 64 /* enable read caching */
369 struct spare_assign
{
370 be32 magic
; /* DDF_SPARE_ASSIGN_MAGIC */
375 be16 populated
; /* SAEs used */
376 be16 max
; /* max SAEs */
378 struct spare_assign_entry
{
379 char guid
[DDF_GUID_LEN
];
380 be16 secondary_element
;
384 /* spare_assign.type is a bitmap */
385 #define DDF_spare_dedicated 0x1 /* else global */
386 #define DDF_spare_revertible 0x2 /* else committable */
387 #define DDF_spare_active 0x4 /* else not active */
388 #define DDF_spare_affinity 0x8 /* enclosure affinity */
390 /* The data_section contents - local scope */
392 be32 magic
; /* DDF_PHYS_DATA_MAGIC */
394 char guid
[DDF_GUID_LEN
];
395 be32 refnum
; /* crc of some magic drive data ... */
396 __u8 forced_ref
; /* set when above was not result of magic */
397 __u8 forced_guid
; /* set if guid was forced rather than magic */
402 /* bbm_section content */
403 struct bad_block_log
{
410 struct mapped_block
{
411 be64 defective_start
;
412 be32 replacement_start
;
418 /* Struct for internally holding ddf structures */
419 /* The DDF structure stored on each device is potentially
420 * quite different, as some data is global and some is local.
421 * The global data is:
424 * - Physical disk records
425 * - Virtual disk records
427 * - Configuration records
428 * - Physical Disk data section
429 * ( and Bad block and vendor which I don't care about yet).
431 * The local data is parsed into separate lists as it is read
432 * and reconstructed for writing. This means that we only need
433 * to make config changes once and they are automatically
434 * propagated to all devices.
435 * Note that the ddf_super has space of the conf and disk data
436 * for this disk and also for a list of all such data.
437 * The list is only used for the superblock that is being
438 * built in Create or Assemble to describe the whole array.
441 struct ddf_header anchor
, primary
, secondary
;
442 struct ddf_controller_data controller
;
443 struct ddf_header
*active
;
444 struct phys_disk
*phys
;
445 struct virtual_disk
*virt
;
448 unsigned int max_part
, mppe
, conf_rec_len
;
456 unsigned int vcnum
; /* index into ->virt */
457 struct vd_config
**other_bvds
;
458 __u64
*block_sizes
; /* NULL if all the same */
461 struct vd_config conf
;
462 } *conflist
, *currentconf
;
471 unsigned long long size
; /* sectors */
472 be64 primary_lba
; /* sectors */
473 be64 secondary_lba
; /* sectors */
474 be64 workspace_lba
; /* sectors */
475 int pdnum
; /* index in ->phys */
476 struct spare_assign
*spare
;
477 void *mdupdate
; /* hold metadata update */
479 /* These fields used by auto-layout */
480 int raiddisk
; /* slot to fill in autolayout */
484 struct disk_data disk
;
485 struct vcl
*vlist
[0]; /* max_part in size */
490 #define offsetof(t,f) ((size_t)&(((t*)0)->f))
494 static int all_ff(const char *guid
);
495 static void pr_state(struct ddf_super
*ddf
, const char *msg
)
498 dprintf("%s/%s: ", __func__
, msg
);
499 for (i
= 0; i
< be16_to_cpu(ddf
->active
->max_vd_entries
); i
++) {
500 if (all_ff(ddf
->virt
->entries
[i
].guid
))
502 dprintf("%u(s=%02x i=%02x) ", i
,
503 ddf
->virt
->entries
[i
].state
,
504 ddf
->virt
->entries
[i
].init_state
);
509 static void pr_state(const struct ddf_super
*ddf
, const char *msg
) {}
512 static void _ddf_set_updates_pending(struct ddf_super
*ddf
, const char *func
)
514 if (ddf
->updates_pending
)
516 ddf
->updates_pending
= 1;
517 ddf
->active
->seq
= cpu_to_be32((be32_to_cpu(ddf
->active
->seq
)+1));
521 #define ddf_set_updates_pending(x) _ddf_set_updates_pending((x), __func__)
523 static unsigned int get_pd_index_from_refnum(const struct vcl
*vc
,
524 be32 refnum
, unsigned int nmax
,
525 const struct vd_config
**bvd
,
528 static be32
calc_crc(void *buf
, int len
)
530 /* crcs are always at the same place as in the ddf_header */
531 struct ddf_header
*ddf
= buf
;
532 be32 oldcrc
= ddf
->crc
;
534 ddf
->crc
= cpu_to_be32(0xffffffff);
536 newcrc
= crc32(0, buf
, len
);
538 /* The crc is store (like everything) bigendian, so convert
539 * here for simplicity
541 return cpu_to_be32(newcrc
);
544 #define DDF_INVALID_LEVEL 0xff
545 #define DDF_NO_SECONDARY 0xff
546 static int err_bad_md_layout(const mdu_array_info_t
*array
)
548 pr_err("RAID%d layout %x with %d disks is unsupported for DDF\n",
549 array
->level
, array
->layout
, array
->raid_disks
);
553 static int layout_md2ddf(const mdu_array_info_t
*array
,
554 struct vd_config
*conf
)
556 be16 prim_elmnt_count
= cpu_to_be16(array
->raid_disks
);
557 __u8 prl
= DDF_INVALID_LEVEL
, rlq
= 0;
558 __u8 sec_elmnt_count
= 1;
559 __u8 srl
= DDF_NO_SECONDARY
;
561 switch (array
->level
) {
566 rlq
= DDF_RAID0_SIMPLE
;
570 switch (array
->raid_disks
) {
572 rlq
= DDF_RAID1_SIMPLE
;
575 rlq
= DDF_RAID1_MULTI
;
578 return err_bad_md_layout(array
);
583 if (array
->layout
!= 0)
584 return err_bad_md_layout(array
);
589 switch (array
->layout
) {
590 case ALGORITHM_LEFT_ASYMMETRIC
:
591 rlq
= DDF_RAID5_N_RESTART
;
593 case ALGORITHM_RIGHT_ASYMMETRIC
:
594 rlq
= DDF_RAID5_0_RESTART
;
596 case ALGORITHM_LEFT_SYMMETRIC
:
597 rlq
= DDF_RAID5_N_CONTINUE
;
599 case ALGORITHM_RIGHT_SYMMETRIC
:
600 /* not mentioned in standard */
602 return err_bad_md_layout(array
);
607 switch (array
->layout
) {
608 case ALGORITHM_ROTATING_N_RESTART
:
609 rlq
= DDF_RAID5_N_RESTART
;
611 case ALGORITHM_ROTATING_ZERO_RESTART
:
612 rlq
= DDF_RAID6_0_RESTART
;
614 case ALGORITHM_ROTATING_N_CONTINUE
:
615 rlq
= DDF_RAID5_N_CONTINUE
;
618 return err_bad_md_layout(array
);
623 if (array
->raid_disks
% 2 == 0 && array
->layout
== 0x102) {
624 rlq
= DDF_RAID1_SIMPLE
;
625 prim_elmnt_count
= cpu_to_be16(2);
626 sec_elmnt_count
= array
->raid_disks
/ 2;
627 } else if (array
->raid_disks
% 3 == 0
628 && array
->layout
== 0x103) {
629 rlq
= DDF_RAID1_MULTI
;
630 prim_elmnt_count
= cpu_to_be16(3);
631 sec_elmnt_count
= array
->raid_disks
/ 3;
633 return err_bad_md_layout(array
);
638 return err_bad_md_layout(array
);
641 conf
->prim_elmnt_count
= prim_elmnt_count
;
644 conf
->sec_elmnt_count
= sec_elmnt_count
;
648 static int err_bad_ddf_layout(const struct vd_config
*conf
)
650 pr_err("DDF RAID %u qualifier %u with %u disks is unsupported\n",
651 conf
->prl
, conf
->rlq
, be16_to_cpu(conf
->prim_elmnt_count
));
655 static int layout_ddf2md(const struct vd_config
*conf
,
656 mdu_array_info_t
*array
)
658 int level
= LEVEL_UNSUPPORTED
;
660 int raiddisks
= be16_to_cpu(conf
->prim_elmnt_count
);
662 if (conf
->sec_elmnt_count
> 1) {
663 /* see also check_secondary() */
664 if (conf
->prl
!= DDF_RAID1
||
665 (conf
->srl
!= DDF_2STRIPED
&& conf
->srl
!= DDF_2SPANNED
)) {
666 pr_err("Unsupported secondary RAID level %u/%u\n",
667 conf
->prl
, conf
->srl
);
670 if (raiddisks
== 2 && conf
->rlq
== DDF_RAID1_SIMPLE
)
672 else if (raiddisks
== 3 && conf
->rlq
== DDF_RAID1_MULTI
)
675 return err_bad_ddf_layout(conf
);
676 raiddisks
*= conf
->sec_elmnt_count
;
683 level
= LEVEL_LINEAR
;
686 if (conf
->rlq
!= DDF_RAID0_SIMPLE
)
687 return err_bad_ddf_layout(conf
);
691 if (!((conf
->rlq
== DDF_RAID1_SIMPLE
&& raiddisks
== 2) ||
692 (conf
->rlq
== DDF_RAID1_MULTI
&& raiddisks
== 3)))
693 return err_bad_ddf_layout(conf
);
697 if (conf
->rlq
!= DDF_RAID4_N
)
698 return err_bad_ddf_layout(conf
);
703 case DDF_RAID5_N_RESTART
:
704 layout
= ALGORITHM_LEFT_ASYMMETRIC
;
706 case DDF_RAID5_0_RESTART
:
707 layout
= ALGORITHM_RIGHT_ASYMMETRIC
;
709 case DDF_RAID5_N_CONTINUE
:
710 layout
= ALGORITHM_LEFT_SYMMETRIC
;
713 return err_bad_ddf_layout(conf
);
719 case DDF_RAID5_N_RESTART
:
720 layout
= ALGORITHM_ROTATING_N_RESTART
;
722 case DDF_RAID6_0_RESTART
:
723 layout
= ALGORITHM_ROTATING_ZERO_RESTART
;
725 case DDF_RAID5_N_CONTINUE
:
726 layout
= ALGORITHM_ROTATING_N_CONTINUE
;
729 return err_bad_ddf_layout(conf
);
734 return err_bad_ddf_layout(conf
);
738 array
->level
= level
;
739 array
->layout
= layout
;
740 array
->raid_disks
= raiddisks
;
744 static int load_ddf_header(int fd
, unsigned long long lba
,
745 unsigned long long size
,
747 struct ddf_header
*hdr
, struct ddf_header
*anchor
)
749 /* read a ddf header (primary or secondary) from fd/lba
750 * and check that it is consistent with anchor
752 * magic, crc, guid, rev, and LBA's header_type, and
753 * everything after header_type must be the same
758 if (lseek64(fd
, lba
<<9, 0) < 0)
761 if (read(fd
, hdr
, 512) != 512)
764 if (!be32_eq(hdr
->magic
, DDF_HEADER_MAGIC
)) {
765 pr_err("%s: bad header magic\n", __func__
);
768 if (!be32_eq(calc_crc(hdr
, 512), hdr
->crc
)) {
769 pr_err("%s: bad CRC\n", __func__
);
772 if (memcmp(anchor
->guid
, hdr
->guid
, DDF_GUID_LEN
) != 0 ||
773 memcmp(anchor
->revision
, hdr
->revision
, 8) != 0 ||
774 !be64_eq(anchor
->primary_lba
, hdr
->primary_lba
) ||
775 !be64_eq(anchor
->secondary_lba
, hdr
->secondary_lba
) ||
777 memcmp(anchor
->pad2
, hdr
->pad2
, 512 -
778 offsetof(struct ddf_header
, pad2
)) != 0) {
779 pr_err("%s: header mismatch\n", __func__
);
783 /* Looks good enough to me... */
787 static void *load_section(int fd
, struct ddf_super
*super
, void *buf
,
788 be32 offset_be
, be32 len_be
, int check
)
790 unsigned long long offset
= be32_to_cpu(offset_be
);
791 unsigned long long len
= be32_to_cpu(len_be
);
792 int dofree
= (buf
== NULL
);
795 if (len
!= 2 && len
!= 8 && len
!= 32
796 && len
!= 128 && len
!= 512)
801 if (!buf
&& posix_memalign(&buf
, 512, len
<<9) != 0)
807 if (super
->active
->type
== 1)
808 offset
+= be64_to_cpu(super
->active
->primary_lba
);
810 offset
+= be64_to_cpu(super
->active
->secondary_lba
);
812 if ((unsigned long long)lseek64(fd
, offset
<<9, 0) != (offset
<<9)) {
817 if ((unsigned long long)read(fd
, buf
, len
<<9) != (len
<<9)) {
825 static int load_ddf_headers(int fd
, struct ddf_super
*super
, char *devname
)
827 unsigned long long dsize
;
829 get_dev_size(fd
, NULL
, &dsize
);
831 if (lseek64(fd
, dsize
-512, 0) < 0) {
833 pr_err("Cannot seek to anchor block on %s: %s\n",
834 devname
, strerror(errno
));
837 if (read(fd
, &super
->anchor
, 512) != 512) {
839 pr_err("Cannot read anchor block on %s: %s\n",
840 devname
, strerror(errno
));
843 if (!be32_eq(super
->anchor
.magic
, DDF_HEADER_MAGIC
)) {
845 pr_err("no DDF anchor found on %s\n",
849 if (!be32_eq(calc_crc(&super
->anchor
, 512), super
->anchor
.crc
)) {
851 pr_err("bad CRC on anchor on %s\n",
855 if (memcmp(super
->anchor
.revision
, DDF_REVISION_0
, 8) != 0 &&
856 memcmp(super
->anchor
.revision
, DDF_REVISION_2
, 8) != 0) {
858 pr_err("can only support super revision"
859 " %.8s and earlier, not %.8s on %s\n",
860 DDF_REVISION_2
, super
->anchor
.revision
,devname
);
863 super
->active
= NULL
;
864 if (load_ddf_header(fd
, be64_to_cpu(super
->anchor
.primary_lba
),
866 &super
->primary
, &super
->anchor
) == 0) {
868 pr_err("Failed to load primary DDF header "
871 super
->active
= &super
->primary
;
873 if (load_ddf_header(fd
, be64_to_cpu(super
->anchor
.secondary_lba
),
875 &super
->secondary
, &super
->anchor
)) {
876 if (super
->active
== NULL
877 || (be32_to_cpu(super
->primary
.seq
)
878 < be32_to_cpu(super
->secondary
.seq
) &&
879 !super
->secondary
.openflag
)
880 || (be32_to_cpu(super
->primary
.seq
)
881 == be32_to_cpu(super
->secondary
.seq
) &&
882 super
->primary
.openflag
&& !super
->secondary
.openflag
)
884 super
->active
= &super
->secondary
;
885 } else if (devname
&&
886 be64_to_cpu(super
->anchor
.secondary_lba
) != ~(__u64
)0)
887 pr_err("Failed to load secondary DDF header on %s\n",
889 if (super
->active
== NULL
)
894 static int load_ddf_global(int fd
, struct ddf_super
*super
, char *devname
)
897 ok
= load_section(fd
, super
, &super
->controller
,
898 super
->active
->controller_section_offset
,
899 super
->active
->controller_section_length
,
901 super
->phys
= load_section(fd
, super
, NULL
,
902 super
->active
->phys_section_offset
,
903 super
->active
->phys_section_length
,
905 super
->pdsize
= be32_to_cpu(super
->active
->phys_section_length
) * 512;
907 super
->virt
= load_section(fd
, super
, NULL
,
908 super
->active
->virt_section_offset
,
909 super
->active
->virt_section_length
,
911 super
->vdsize
= be32_to_cpu(super
->active
->virt_section_length
) * 512;
921 super
->conflist
= NULL
;
924 super
->max_part
= be16_to_cpu(super
->active
->max_partitions
);
925 super
->mppe
= be16_to_cpu(super
->active
->max_primary_element_entries
);
926 super
->conf_rec_len
= be16_to_cpu(super
->active
->config_record_len
);
930 #define DDF_UNUSED_BVD 0xff
931 static int alloc_other_bvds(const struct ddf_super
*ddf
, struct vcl
*vcl
)
933 unsigned int n_vds
= vcl
->conf
.sec_elmnt_count
- 1;
934 unsigned int i
, vdsize
;
937 vcl
->other_bvds
= NULL
;
940 vdsize
= ddf
->conf_rec_len
* 512;
941 if (posix_memalign(&p
, 512, n_vds
*
942 (vdsize
+ sizeof(struct vd_config
*))) != 0)
944 vcl
->other_bvds
= (struct vd_config
**) (p
+ n_vds
* vdsize
);
945 for (i
= 0; i
< n_vds
; i
++) {
946 vcl
->other_bvds
[i
] = p
+ i
* vdsize
;
947 memset(vcl
->other_bvds
[i
], 0, vdsize
);
948 vcl
->other_bvds
[i
]->sec_elmnt_seq
= DDF_UNUSED_BVD
;
953 static void add_other_bvd(struct vcl
*vcl
, struct vd_config
*vd
,
957 for (i
= 0; i
< vcl
->conf
.sec_elmnt_count
-1; i
++)
958 if (vcl
->other_bvds
[i
]->sec_elmnt_seq
== vd
->sec_elmnt_seq
)
961 if (i
< vcl
->conf
.sec_elmnt_count
-1) {
962 if (be32_to_cpu(vd
->seqnum
) <=
963 be32_to_cpu(vcl
->other_bvds
[i
]->seqnum
))
966 for (i
= 0; i
< vcl
->conf
.sec_elmnt_count
-1; i
++)
967 if (vcl
->other_bvds
[i
]->sec_elmnt_seq
== DDF_UNUSED_BVD
)
969 if (i
== vcl
->conf
.sec_elmnt_count
-1) {
970 pr_err("no space for sec level config %u, count is %u\n",
971 vd
->sec_elmnt_seq
, vcl
->conf
.sec_elmnt_count
);
975 memcpy(vcl
->other_bvds
[i
], vd
, len
);
978 static int load_ddf_local(int fd
, struct ddf_super
*super
,
979 char *devname
, int keep
)
985 unsigned int confsec
;
987 unsigned int max_virt_disks
= be16_to_cpu
988 (super
->active
->max_vd_entries
);
989 unsigned long long dsize
;
991 /* First the local disk info */
992 if (posix_memalign((void**)&dl
, 512,
994 (super
->max_part
) * sizeof(dl
->vlist
[0])) != 0) {
995 pr_err("%s could not allocate disk info buffer\n",
1000 load_section(fd
, super
, &dl
->disk
,
1001 super
->active
->data_section_offset
,
1002 super
->active
->data_section_length
,
1004 dl
->devname
= devname
? xstrdup(devname
) : NULL
;
1007 dl
->major
= major(stb
.st_rdev
);
1008 dl
->minor
= minor(stb
.st_rdev
);
1009 dl
->next
= super
->dlist
;
1010 dl
->fd
= keep
? fd
: -1;
1013 if (get_dev_size(fd
, devname
, &dsize
))
1014 dl
->size
= dsize
>> 9;
1015 /* If the disks have different sizes, the LBAs will differ
1016 * between phys disks.
1017 * At this point here, the values in super->active must be valid
1018 * for this phys disk. */
1019 dl
->primary_lba
= super
->active
->primary_lba
;
1020 dl
->secondary_lba
= super
->active
->secondary_lba
;
1021 dl
->workspace_lba
= super
->active
->workspace_lba
;
1023 for (i
= 0 ; i
< super
->max_part
; i
++)
1024 dl
->vlist
[i
] = NULL
;
1027 for (i
= 0; i
< be16_to_cpu(super
->active
->max_pd_entries
); i
++)
1028 if (memcmp(super
->phys
->entries
[i
].guid
,
1029 dl
->disk
.guid
, DDF_GUID_LEN
) == 0)
1032 /* Now the config list. */
1033 /* 'conf' is an array of config entries, some of which are
1034 * probably invalid. Those which are good need to be copied into
1038 conf
= load_section(fd
, super
, super
->conf
,
1039 super
->active
->config_section_offset
,
1040 super
->active
->config_section_length
,
1045 confsec
< be32_to_cpu(super
->active
->config_section_length
);
1046 confsec
+= super
->conf_rec_len
) {
1047 struct vd_config
*vd
=
1048 (struct vd_config
*)((char*)conf
+ confsec
*512);
1051 if (be32_eq(vd
->magic
, DDF_SPARE_ASSIGN_MAGIC
)) {
1054 if (posix_memalign((void**)&dl
->spare
, 512,
1055 super
->conf_rec_len
*512) != 0) {
1056 pr_err("%s could not allocate spare info buf\n",
1061 memcpy(dl
->spare
, vd
, super
->conf_rec_len
*512);
1064 if (!be32_eq(vd
->magic
, DDF_VD_CONF_MAGIC
))
1066 for (vcl
= super
->conflist
; vcl
; vcl
= vcl
->next
) {
1067 if (memcmp(vcl
->conf
.guid
,
1068 vd
->guid
, DDF_GUID_LEN
) == 0)
1073 dl
->vlist
[vnum
++] = vcl
;
1074 if (vcl
->other_bvds
!= NULL
&&
1075 vcl
->conf
.sec_elmnt_seq
!= vd
->sec_elmnt_seq
) {
1076 add_other_bvd(vcl
, vd
, super
->conf_rec_len
*512);
1079 if (be32_to_cpu(vd
->seqnum
) <=
1080 be32_to_cpu(vcl
->conf
.seqnum
))
1083 if (posix_memalign((void**)&vcl
, 512,
1084 (super
->conf_rec_len
*512 +
1085 offsetof(struct vcl
, conf
))) != 0) {
1086 pr_err("%s could not allocate vcl buf\n",
1090 vcl
->next
= super
->conflist
;
1091 vcl
->block_sizes
= NULL
; /* FIXME not for CONCAT */
1092 vcl
->conf
.sec_elmnt_count
= vd
->sec_elmnt_count
;
1093 if (alloc_other_bvds(super
, vcl
) != 0) {
1094 pr_err("%s could not allocate other bvds\n",
1099 super
->conflist
= vcl
;
1100 dl
->vlist
[vnum
++] = vcl
;
1102 memcpy(&vcl
->conf
, vd
, super
->conf_rec_len
*512);
1103 for (i
=0; i
< max_virt_disks
; i
++)
1104 if (memcmp(super
->virt
->entries
[i
].guid
,
1105 vcl
->conf
.guid
, DDF_GUID_LEN
)==0)
1107 if (i
< max_virt_disks
)
1115 static int load_super_ddf_all(struct supertype
*st
, int fd
,
1116 void **sbp
, char *devname
);
1119 static void free_super_ddf(struct supertype
*st
);
1121 static int load_super_ddf(struct supertype
*st
, int fd
,
1124 unsigned long long dsize
;
1125 struct ddf_super
*super
;
1128 if (get_dev_size(fd
, devname
, &dsize
) == 0)
1131 if (test_partition(fd
))
1132 /* DDF is not allowed on partitions */
1135 /* 32M is a lower bound */
1136 if (dsize
<= 32*1024*1024) {
1138 pr_err("%s is too small for ddf: "
1139 "size is %llu sectors.\n",
1145 pr_err("%s is an odd size for ddf: "
1146 "size is %llu bytes.\n",
1153 if (posix_memalign((void**)&super
, 512, sizeof(*super
))!= 0) {
1154 pr_err("malloc of %zu failed.\n",
1158 memset(super
, 0, sizeof(*super
));
1160 rv
= load_ddf_headers(fd
, super
, devname
);
1166 /* Have valid headers and have chosen the best. Let's read in the rest*/
1168 rv
= load_ddf_global(fd
, super
, devname
);
1172 pr_err("Failed to load all information "
1173 "sections on %s\n", devname
);
1178 rv
= load_ddf_local(fd
, super
, devname
, 0);
1182 pr_err("Failed to load all information "
1183 "sections on %s\n", devname
);
1188 /* Should possibly check the sections .... */
1191 if (st
->ss
== NULL
) {
1192 st
->ss
= &super_ddf
;
1193 st
->minor_version
= 0;
1200 static void free_super_ddf(struct supertype
*st
)
1202 struct ddf_super
*ddf
= st
->sb
;
1208 while (ddf
->conflist
) {
1209 struct vcl
*v
= ddf
->conflist
;
1210 ddf
->conflist
= v
->next
;
1212 free(v
->block_sizes
);
1215 v->other_bvds[0] points to beginning of buffer,
1216 see alloc_other_bvds()
1218 free(v
->other_bvds
[0]);
1221 while (ddf
->dlist
) {
1222 struct dl
*d
= ddf
->dlist
;
1223 ddf
->dlist
= d
->next
;
1230 while (ddf
->add_list
) {
1231 struct dl
*d
= ddf
->add_list
;
1232 ddf
->add_list
= d
->next
;
1243 static struct supertype
*match_metadata_desc_ddf(char *arg
)
1245 /* 'ddf' only support containers */
1246 struct supertype
*st
;
1247 if (strcmp(arg
, "ddf") != 0 &&
1248 strcmp(arg
, "default") != 0
1252 st
= xcalloc(1, sizeof(*st
));
1253 st
->ss
= &super_ddf
;
1255 st
->minor_version
= 0;
1262 static mapping_t ddf_state
[] = {
1268 { "Partially Optimal", 5},
1274 static mapping_t ddf_init_state
[] = {
1275 { "Not Initialised", 0},
1276 { "QuickInit in Progress", 1},
1277 { "Fully Initialised", 2},
1281 static mapping_t ddf_access
[] = {
1285 { "Blocked (no access)", 3},
1289 static mapping_t ddf_level
[] = {
1290 { "RAID0", DDF_RAID0
},
1291 { "RAID1", DDF_RAID1
},
1292 { "RAID3", DDF_RAID3
},
1293 { "RAID4", DDF_RAID4
},
1294 { "RAID5", DDF_RAID5
},
1295 { "RAID1E",DDF_RAID1E
},
1296 { "JBOD", DDF_JBOD
},
1297 { "CONCAT",DDF_CONCAT
},
1298 { "RAID5E",DDF_RAID5E
},
1299 { "RAID5EE",DDF_RAID5EE
},
1300 { "RAID6", DDF_RAID6
},
1303 static mapping_t ddf_sec_level
[] = {
1304 { "Striped", DDF_2STRIPED
},
1305 { "Mirrored", DDF_2MIRRORED
},
1306 { "Concat", DDF_2CONCAT
},
1307 { "Spanned", DDF_2SPANNED
},
1312 static int all_ff(const char *guid
)
1315 for (i
= 0; i
< DDF_GUID_LEN
; i
++)
1316 if (guid
[i
] != (char)0xff)
1321 static const char *guid_str(const char *guid
)
1323 static char buf
[DDF_GUID_LEN
*2+1];
1326 for (i
= 0; i
< DDF_GUID_LEN
; i
++) {
1327 unsigned char c
= guid
[i
];
1328 if (c
>= 32 && c
< 127)
1329 p
+= sprintf(p
, "%c", c
);
1331 p
+= sprintf(p
, "%02x", c
);
1334 return (const char *) buf
;
1338 static void print_guid(char *guid
, int tstamp
)
1340 /* A GUIDs are part (or all) ASCII and part binary.
1341 * They tend to be space padded.
1342 * We print the GUID in HEX, then in parentheses add
1343 * any initial ASCII sequence, and a possible
1344 * time stamp from bytes 16-19
1346 int l
= DDF_GUID_LEN
;
1349 for (i
=0 ; i
<DDF_GUID_LEN
; i
++) {
1350 if ((i
&3)==0 && i
!= 0) printf(":");
1351 printf("%02X", guid
[i
]&255);
1355 while (l
&& guid
[l
-1] == ' ')
1357 for (i
=0 ; i
<l
; i
++) {
1358 if (guid
[i
] >= 0x20 && guid
[i
] < 0x7f)
1359 fputc(guid
[i
], stdout
);
1364 time_t then
= __be32_to_cpu(*(__u32
*)(guid
+16)) + DECADE
;
1367 tm
= localtime(&then
);
1368 strftime(tbuf
, 100, " %D %T",tm
);
1369 fputs(tbuf
, stdout
);
1374 static void examine_vd(int n
, struct ddf_super
*sb
, char *guid
)
1376 int crl
= sb
->conf_rec_len
;
1379 for (vcl
= sb
->conflist
; vcl
; vcl
= vcl
->next
) {
1381 struct vd_config
*vc
= &vcl
->conf
;
1383 if (!be32_eq(calc_crc(vc
, crl
*512), vc
->crc
))
1385 if (memcmp(vc
->guid
, guid
, DDF_GUID_LEN
) != 0)
1388 /* Ok, we know about this VD, let's give more details */
1389 printf(" Raid Devices[%d] : %d (", n
,
1390 be16_to_cpu(vc
->prim_elmnt_count
));
1391 for (i
= 0; i
< be16_to_cpu(vc
->prim_elmnt_count
); i
++) {
1393 int cnt
= be16_to_cpu(sb
->phys
->used_pdes
);
1394 for (j
=0; j
<cnt
; j
++)
1395 if (be32_eq(vc
->phys_refnum
[i
],
1396 sb
->phys
->entries
[j
].refnum
))
1405 if (vc
->chunk_shift
!= 255)
1406 printf(" Chunk Size[%d] : %d sectors\n", n
,
1407 1 << vc
->chunk_shift
);
1408 printf(" Raid Level[%d] : %s\n", n
,
1409 map_num(ddf_level
, vc
->prl
)?:"-unknown-");
1410 if (vc
->sec_elmnt_count
!= 1) {
1411 printf(" Secondary Position[%d] : %d of %d\n", n
,
1412 vc
->sec_elmnt_seq
, vc
->sec_elmnt_count
);
1413 printf(" Secondary Level[%d] : %s\n", n
,
1414 map_num(ddf_sec_level
, vc
->srl
) ?: "-unknown-");
1416 printf(" Device Size[%d] : %llu\n", n
,
1417 be64_to_cpu(vc
->blocks
)/2);
1418 printf(" Array Size[%d] : %llu\n", n
,
1419 be64_to_cpu(vc
->array_blocks
)/2);
1423 static void examine_vds(struct ddf_super
*sb
)
1425 int cnt
= be16_to_cpu(sb
->virt
->populated_vdes
);
1427 printf(" Virtual Disks : %d\n", cnt
);
1429 for (i
= 0; i
< be16_to_cpu(sb
->virt
->max_vdes
); i
++) {
1430 struct virtual_entry
*ve
= &sb
->virt
->entries
[i
];
1431 if (all_ff(ve
->guid
))
1434 printf(" VD GUID[%d] : ", i
); print_guid(ve
->guid
, 1);
1436 printf(" unit[%d] : %d\n", i
, be16_to_cpu(ve
->unit
));
1437 printf(" state[%d] : %s, %s%s\n", i
,
1438 map_num(ddf_state
, ve
->state
& 7),
1439 (ve
->state
& DDF_state_morphing
) ? "Morphing, ": "",
1440 (ve
->state
& DDF_state_inconsistent
)? "Not Consistent" : "Consistent");
1441 printf(" init state[%d] : %s\n", i
,
1442 map_num(ddf_init_state
, ve
->init_state
&DDF_initstate_mask
));
1443 printf(" access[%d] : %s\n", i
,
1444 map_num(ddf_access
, (ve
->init_state
& DDF_access_mask
) >> 6));
1445 printf(" Name[%d] : %.16s\n", i
, ve
->name
);
1446 examine_vd(i
, sb
, ve
->guid
);
1448 if (cnt
) printf("\n");
1451 static void examine_pds(struct ddf_super
*sb
)
1453 int cnt
= be16_to_cpu(sb
->phys
->used_pdes
);
1456 printf(" Physical Disks : %d\n", cnt
);
1457 printf(" Number RefNo Size Device Type/State\n");
1459 for (i
=0 ; i
<cnt
; i
++) {
1460 struct phys_disk_entry
*pd
= &sb
->phys
->entries
[i
];
1461 int type
= be16_to_cpu(pd
->type
);
1462 int state
= be16_to_cpu(pd
->state
);
1464 //printf(" PD GUID[%d] : ", i); print_guid(pd->guid, 0);
1466 printf(" %3d %08x ", i
,
1467 be32_to_cpu(pd
->refnum
));
1469 be64_to_cpu(pd
->config_size
)>>1);
1470 for (dl
= sb
->dlist
; dl
; dl
= dl
->next
) {
1471 if (be32_eq(dl
->disk
.refnum
, pd
->refnum
)) {
1472 char *dv
= map_dev(dl
->major
, dl
->minor
, 0);
1474 printf("%-15s", dv
);
1481 printf(" %s%s%s%s%s",
1482 (type
&2) ? "active":"",
1483 (type
&4) ? "Global-Spare":"",
1484 (type
&8) ? "spare" : "",
1485 (type
&16)? ", foreign" : "",
1486 (type
&32)? "pass-through" : "");
1487 if (state
& DDF_Failed
)
1488 /* This over-rides these three */
1489 state
&= ~(DDF_Online
|DDF_Rebuilding
|DDF_Transition
);
1490 printf("/%s%s%s%s%s%s%s",
1491 (state
&1)? "Online": "Offline",
1492 (state
&2)? ", Failed": "",
1493 (state
&4)? ", Rebuilding": "",
1494 (state
&8)? ", in-transition": "",
1495 (state
&16)? ", SMART-errors": "",
1496 (state
&32)? ", Unrecovered-Read-Errors": "",
1497 (state
&64)? ", Missing" : "");
1502 static void examine_super_ddf(struct supertype
*st
, char *homehost
)
1504 struct ddf_super
*sb
= st
->sb
;
1506 printf(" Magic : %08x\n", be32_to_cpu(sb
->anchor
.magic
));
1507 printf(" Version : %.8s\n", sb
->anchor
.revision
);
1508 printf("Controller GUID : "); print_guid(sb
->controller
.guid
, 0);
1510 printf(" Container GUID : "); print_guid(sb
->anchor
.guid
, 1);
1512 printf(" Seq : %08x\n", be32_to_cpu(sb
->active
->seq
));
1513 printf(" Redundant hdr : %s\n", be32_eq(sb
->secondary
.magic
,
1520 static void getinfo_super_ddf(struct supertype
*st
, struct mdinfo
*info
, char *map
);
1522 static void uuid_from_ddf_guid(const char *guid
, int uuid
[4]);
1523 static void uuid_from_super_ddf(struct supertype
*st
, int uuid
[4]);
1524 static void _ddf_array_name(char *name
, const struct ddf_super
*ddf
, int i
);
1526 static unsigned int get_vd_num_of_subarray(struct supertype
*st
)
1529 * Figure out the VD number for this supertype.
1530 * Returns DDF_CONTAINER for the container itself,
1531 * and DDF_NOTFOUND on error.
1533 struct ddf_super
*ddf
= st
->sb
;
1538 if (*st
->container_devnm
== '\0')
1539 return DDF_CONTAINER
;
1541 sra
= sysfs_read(-1, st
->devnm
, GET_VERSION
);
1542 if (!sra
|| sra
->array
.major_version
!= -1 ||
1543 sra
->array
.minor_version
!= -2 ||
1544 !is_subarray(sra
->text_version
))
1545 return DDF_NOTFOUND
;
1547 sub
= strchr(sra
->text_version
+ 1, '/');
1549 vcnum
= strtoul(sub
+ 1, &end
, 10);
1550 if (sub
== NULL
|| *sub
== '\0' || *end
!= '\0' ||
1551 vcnum
>= be16_to_cpu(ddf
->active
->max_vd_entries
))
1552 return DDF_NOTFOUND
;
1557 static void brief_examine_super_ddf(struct supertype
*st
, int verbose
)
1559 /* We just write a generic DDF ARRAY entry
1563 getinfo_super_ddf(st
, &info
, NULL
);
1564 fname_from_uuid(st
, &info
, nbuf
, ':');
1566 printf("ARRAY metadata=ddf UUID=%s\n", nbuf
+ 5);
1569 static void brief_examine_subarrays_ddf(struct supertype
*st
, int verbose
)
1571 /* We just write a generic DDF ARRAY entry
1573 struct ddf_super
*ddf
= st
->sb
;
1577 getinfo_super_ddf(st
, &info
, NULL
);
1578 fname_from_uuid(st
, &info
, nbuf
, ':');
1580 for (i
= 0; i
< be16_to_cpu(ddf
->virt
->max_vdes
); i
++) {
1581 struct virtual_entry
*ve
= &ddf
->virt
->entries
[i
];
1585 if (all_ff(ve
->guid
))
1587 memcpy(vcl
.conf
.guid
, ve
->guid
, DDF_GUID_LEN
);
1588 ddf
->currentconf
=&vcl
;
1590 uuid_from_super_ddf(st
, info
.uuid
);
1591 fname_from_uuid(st
, &info
, nbuf1
, ':');
1592 _ddf_array_name(namebuf
, ddf
, i
);
1593 printf("ARRAY%s%s container=%s member=%d UUID=%s\n",
1594 namebuf
[0] == '\0' ? "" : " /dev/md/", namebuf
,
1595 nbuf
+5, i
, nbuf1
+5);
1599 static void export_examine_super_ddf(struct supertype
*st
)
1603 getinfo_super_ddf(st
, &info
, NULL
);
1604 fname_from_uuid(st
, &info
, nbuf
, ':');
1605 printf("MD_METADATA=ddf\n");
1606 printf("MD_LEVEL=container\n");
1607 printf("MD_UUID=%s\n", nbuf
+5);
1608 printf("MD_DEVICES=%u\n",
1609 be16_to_cpu(((struct ddf_super
*)st
->sb
)->phys
->used_pdes
));
1612 static int copy_metadata_ddf(struct supertype
*st
, int from
, int to
)
1615 unsigned long long dsize
, offset
;
1617 struct ddf_header
*ddf
;
1620 /* The meta consists of an anchor, a primary, and a secondary.
1621 * This all lives at the end of the device.
1622 * So it is easiest to find the earliest of primary and
1623 * secondary, and copy everything from there.
1625 * Anchor is 512 from end It contains primary_lba and secondary_lba
1626 * we choose one of those
1629 if (posix_memalign(&buf
, 4096, 4096) != 0)
1632 if (!get_dev_size(from
, NULL
, &dsize
))
1635 if (lseek64(from
, dsize
-512, 0) < 0)
1637 if (read(from
, buf
, 512) != 512)
1640 if (!be32_eq(ddf
->magic
, DDF_HEADER_MAGIC
) ||
1641 !be32_eq(calc_crc(ddf
, 512), ddf
->crc
) ||
1642 (memcmp(ddf
->revision
, DDF_REVISION_0
, 8) != 0 &&
1643 memcmp(ddf
->revision
, DDF_REVISION_2
, 8) != 0))
1646 offset
= dsize
- 512;
1647 if ((be64_to_cpu(ddf
->primary_lba
) << 9) < offset
)
1648 offset
= be64_to_cpu(ddf
->primary_lba
) << 9;
1649 if ((be64_to_cpu(ddf
->secondary_lba
) << 9) < offset
)
1650 offset
= be64_to_cpu(ddf
->secondary_lba
) << 9;
1652 bytes
= dsize
- offset
;
1654 if (lseek64(from
, offset
, 0) < 0 ||
1655 lseek64(to
, offset
, 0) < 0)
1657 while (written
< bytes
) {
1658 int n
= bytes
- written
;
1661 if (read(from
, buf
, n
) != n
)
1663 if (write(to
, buf
, n
) != n
)
1674 static void detail_super_ddf(struct supertype
*st
, char *homehost
)
1677 * Could print DDF GUID
1678 * Need to find which array
1679 * If whole, briefly list all arrays
1684 static const char *vendors_with_variable_volume_UUID
[] = {
1688 static int volume_id_is_reliable(const struct ddf_super
*ddf
)
1690 int n
= ARRAY_SIZE(vendors_with_variable_volume_UUID
);
1692 for (i
= 0; i
< n
; i
++)
1693 if (!memcmp(ddf
->controller
.guid
,
1694 vendors_with_variable_volume_UUID
[i
], 8))
1699 static void uuid_of_ddf_subarray(const struct ddf_super
*ddf
,
1700 unsigned int vcnum
, int uuid
[4])
1702 char buf
[DDF_GUID_LEN
+18], sha
[20], *p
;
1703 struct sha1_ctx ctx
;
1704 if (volume_id_is_reliable(ddf
)) {
1705 uuid_from_ddf_guid(ddf
->virt
->entries
[vcnum
].guid
, uuid
);
1709 * Some fake RAID BIOSes (in particular, LSI ones) change the
1710 * VD GUID at every boot. These GUIDs are not suitable for
1711 * identifying an array. Luckily the header GUID appears to
1713 * We construct a pseudo-UUID from the header GUID and those
1714 * properties of the subarray that we expect to remain constant.
1716 memset(buf
, 0, sizeof(buf
));
1718 memcpy(p
, ddf
->anchor
.guid
, DDF_GUID_LEN
);
1720 memcpy(p
, ddf
->virt
->entries
[vcnum
].name
, 16);
1722 *((__u16
*) p
) = vcnum
;
1723 sha1_init_ctx(&ctx
);
1724 sha1_process_bytes(buf
, sizeof(buf
), &ctx
);
1725 sha1_finish_ctx(&ctx
, sha
);
1726 memcpy(uuid
, sha
, 4*4);
1729 static void brief_detail_super_ddf(struct supertype
*st
)
1733 struct ddf_super
*ddf
= st
->sb
;
1734 unsigned int vcnum
= get_vd_num_of_subarray(st
);
1735 if (vcnum
== DDF_CONTAINER
)
1736 uuid_from_super_ddf(st
, info
.uuid
);
1737 else if (vcnum
== DDF_NOTFOUND
)
1740 uuid_of_ddf_subarray(ddf
, vcnum
, info
.uuid
);
1741 fname_from_uuid(st
, &info
, nbuf
,':');
1742 printf(" UUID=%s", nbuf
+ 5);
1746 static int match_home_ddf(struct supertype
*st
, char *homehost
)
1748 /* It matches 'this' host if the controller is a
1749 * Linux-MD controller with vendor_data matching
1752 struct ddf_super
*ddf
= st
->sb
;
1757 len
= strlen(homehost
);
1759 return (memcmp(ddf
->controller
.guid
, T10
, 8) == 0 &&
1760 len
< sizeof(ddf
->controller
.vendor_data
) &&
1761 memcmp(ddf
->controller
.vendor_data
, homehost
,len
) == 0 &&
1762 ddf
->controller
.vendor_data
[len
] == 0);
1766 static int find_index_in_bvd(const struct ddf_super
*ddf
,
1767 const struct vd_config
*conf
, unsigned int n
,
1768 unsigned int *n_bvd
)
1771 * Find the index of the n-th valid physical disk in this BVD
1774 for (i
= 0, j
= 0; i
< ddf
->mppe
&&
1775 j
< be16_to_cpu(conf
->prim_elmnt_count
); i
++) {
1776 if (be32_to_cpu(conf
->phys_refnum
[i
]) != 0xffffffff) {
1784 dprintf("%s: couldn't find BVD member %u (total %u)\n",
1785 __func__
, n
, be16_to_cpu(conf
->prim_elmnt_count
));
1789 static struct vd_config
*find_vdcr(struct ddf_super
*ddf
, unsigned int inst
,
1791 unsigned int *n_bvd
, struct vcl
**vcl
)
1795 for (v
= ddf
->conflist
; v
; v
= v
->next
) {
1796 unsigned int nsec
, ibvd
= 0;
1797 struct vd_config
*conf
;
1798 if (inst
!= v
->vcnum
)
1801 if (conf
->sec_elmnt_count
== 1) {
1802 if (find_index_in_bvd(ddf
, conf
, n
, n_bvd
)) {
1808 if (v
->other_bvds
== NULL
) {
1809 pr_err("%s: BUG: other_bvds is NULL, nsec=%u\n",
1810 __func__
, conf
->sec_elmnt_count
);
1813 nsec
= n
/ be16_to_cpu(conf
->prim_elmnt_count
);
1814 if (conf
->sec_elmnt_seq
!= nsec
) {
1815 for (ibvd
= 1; ibvd
< conf
->sec_elmnt_count
; ibvd
++) {
1816 if (v
->other_bvds
[ibvd
-1]->sec_elmnt_seq
1820 if (ibvd
== conf
->sec_elmnt_count
)
1822 conf
= v
->other_bvds
[ibvd
-1];
1824 if (!find_index_in_bvd(ddf
, conf
,
1825 n
- nsec
*conf
->sec_elmnt_count
, n_bvd
))
1827 dprintf("%s: found disk %u as member %u in bvd %d of array %u\n"
1828 , __func__
, n
, *n_bvd
, ibvd
, inst
);
1833 pr_err("%s: Could't find disk %d in array %u\n", __func__
, n
, inst
);
1838 static int find_phys(const struct ddf_super
*ddf
, be32 phys_refnum
)
1840 /* Find the entry in phys_disk which has the given refnum
1841 * and return it's index
1844 for (i
= 0; i
< be16_to_cpu(ddf
->phys
->max_pdes
); i
++)
1845 if (be32_eq(ddf
->phys
->entries
[i
].refnum
, phys_refnum
))
1850 static void uuid_from_ddf_guid(const char *guid
, int uuid
[4])
1853 struct sha1_ctx ctx
;
1854 sha1_init_ctx(&ctx
);
1855 sha1_process_bytes(guid
, DDF_GUID_LEN
, &ctx
);
1856 sha1_finish_ctx(&ctx
, buf
);
1857 memcpy(uuid
, buf
, 4*4);
1860 static void uuid_from_super_ddf(struct supertype
*st
, int uuid
[4])
1862 /* The uuid returned here is used for:
1863 * uuid to put into bitmap file (Create, Grow)
1864 * uuid for backup header when saving critical section (Grow)
1865 * comparing uuids when re-adding a device into an array
1866 * In these cases the uuid required is that of the data-array,
1867 * not the device-set.
1868 * uuid to recognise same set when adding a missing device back
1869 * to an array. This is a uuid for the device-set.
1871 * For each of these we can make do with a truncated
1872 * or hashed uuid rather than the original, as long as
1874 * In the case of SVD we assume the BVD is of interest,
1875 * though that might be the case if a bitmap were made for
1876 * a mirrored SVD - worry about that later.
1877 * So we need to find the VD configuration record for the
1878 * relevant BVD and extract the GUID and Secondary_Element_Seq.
1879 * The first 16 bytes of the sha1 of these is used.
1881 struct ddf_super
*ddf
= st
->sb
;
1882 struct vcl
*vcl
= ddf
->currentconf
;
1885 uuid_of_ddf_subarray(ddf
, vcl
->vcnum
, uuid
);
1887 uuid_from_ddf_guid(ddf
->anchor
.guid
, uuid
);
1890 static void getinfo_super_ddf_bvd(struct supertype
*st
, struct mdinfo
*info
, char *map
);
1892 static void getinfo_super_ddf(struct supertype
*st
, struct mdinfo
*info
, char *map
)
1894 struct ddf_super
*ddf
= st
->sb
;
1895 int map_disks
= info
->array
.raid_disks
;
1898 if (ddf
->currentconf
) {
1899 getinfo_super_ddf_bvd(st
, info
, map
);
1902 memset(info
, 0, sizeof(*info
));
1904 info
->array
.raid_disks
= be16_to_cpu(ddf
->phys
->used_pdes
);
1905 info
->array
.level
= LEVEL_CONTAINER
;
1906 info
->array
.layout
= 0;
1907 info
->array
.md_minor
= -1;
1908 cptr
= (__u32
*)(ddf
->anchor
.guid
+ 16);
1909 info
->array
.ctime
= DECADE
+ __be32_to_cpu(*cptr
);
1911 info
->array
.utime
= 0;
1912 info
->array
.chunk_size
= 0;
1913 info
->container_enough
= 1;
1915 info
->disk
.major
= 0;
1916 info
->disk
.minor
= 0;
1918 struct phys_disk_entry
*pde
= NULL
;
1919 info
->disk
.number
= be32_to_cpu(ddf
->dlist
->disk
.refnum
);
1920 info
->disk
.raid_disk
= find_phys(ddf
, ddf
->dlist
->disk
.refnum
);
1922 info
->data_offset
= be64_to_cpu(ddf
->phys
->
1923 entries
[info
->disk
.raid_disk
].
1925 info
->component_size
= ddf
->dlist
->size
- info
->data_offset
;
1926 if (info
->disk
.raid_disk
>= 0)
1927 pde
= ddf
->phys
->entries
+ info
->disk
.raid_disk
;
1929 !(be16_to_cpu(pde
->state
) & DDF_Failed
))
1930 info
->disk
.state
= (1 << MD_DISK_SYNC
) | (1 << MD_DISK_ACTIVE
);
1932 info
->disk
.state
= 1 << MD_DISK_FAULTY
;
1934 info
->events
= be32_to_cpu(ddf
->active
->seq
);
1936 info
->disk
.number
= -1;
1937 info
->disk
.raid_disk
= -1;
1938 // info->disk.raid_disk = find refnum in the table and use index;
1939 info
->disk
.state
= (1 << MD_DISK_SYNC
) | (1 << MD_DISK_ACTIVE
);
1942 info
->recovery_start
= MaxSector
;
1943 info
->reshape_active
= 0;
1944 info
->recovery_blocked
= 0;
1947 info
->array
.major_version
= -1;
1948 info
->array
.minor_version
= -2;
1949 strcpy(info
->text_version
, "ddf");
1950 info
->safe_mode_delay
= 0;
1952 uuid_from_super_ddf(st
, info
->uuid
);
1956 for (i
= 0 ; i
< map_disks
; i
++) {
1957 if (i
< info
->array
.raid_disks
&&
1958 !(be16_to_cpu(ddf
->phys
->entries
[i
].state
)
1967 /* size of name must be at least 17 bytes! */
1968 static void _ddf_array_name(char *name
, const struct ddf_super
*ddf
, int i
)
1971 memcpy(name
, ddf
->virt
->entries
[i
].name
, 16);
1973 for(j
= 0; j
< 16; j
++)
1978 static void getinfo_super_ddf_bvd(struct supertype
*st
, struct mdinfo
*info
, char *map
)
1980 struct ddf_super
*ddf
= st
->sb
;
1981 struct vcl
*vc
= ddf
->currentconf
;
1982 int cd
= ddf
->currentdev
;
1986 int map_disks
= info
->array
.raid_disks
;
1988 struct vd_config
*conf
;
1990 memset(info
, 0, sizeof(*info
));
1991 if (layout_ddf2md(&vc
->conf
, &info
->array
) == -1)
1993 info
->array
.md_minor
= -1;
1994 cptr
= (__u32
*)(vc
->conf
.guid
+ 16);
1995 info
->array
.ctime
= DECADE
+ __be32_to_cpu(*cptr
);
1996 info
->array
.utime
= DECADE
+ be32_to_cpu(vc
->conf
.timestamp
);
1997 info
->array
.chunk_size
= 512 << vc
->conf
.chunk_shift
;
1998 info
->custom_array_size
= 0;
2001 n_prim
= be16_to_cpu(conf
->prim_elmnt_count
);
2002 if (conf
->sec_elmnt_count
> 1 && cd
>= n_prim
) {
2003 int ibvd
= cd
/ n_prim
- 1;
2005 conf
= vc
->other_bvds
[ibvd
];
2008 if (cd
>= 0 && (unsigned)cd
< ddf
->mppe
) {
2010 be64_to_cpu(LBA_OFFSET(ddf
, conf
)[cd
]);
2011 if (vc
->block_sizes
)
2012 info
->component_size
= vc
->block_sizes
[cd
];
2014 info
->component_size
= be64_to_cpu(conf
->blocks
);
2017 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
2018 if (be32_eq(dl
->disk
.refnum
, conf
->phys_refnum
[cd
]))
2021 info
->disk
.major
= 0;
2022 info
->disk
.minor
= 0;
2023 info
->disk
.state
= 0;
2025 info
->disk
.major
= dl
->major
;
2026 info
->disk
.minor
= dl
->minor
;
2027 info
->disk
.raid_disk
= cd
+ conf
->sec_elmnt_seq
2028 * be16_to_cpu(conf
->prim_elmnt_count
);
2029 info
->disk
.number
= dl
->pdnum
;
2030 info
->disk
.state
= 0;
2031 if (info
->disk
.number
>= 0 &&
2032 (be16_to_cpu(ddf
->phys
->entries
[info
->disk
.number
].state
) & DDF_Online
) &&
2033 !(be16_to_cpu(ddf
->phys
->entries
[info
->disk
.number
].state
) & DDF_Failed
))
2034 info
->disk
.state
= (1<<MD_DISK_SYNC
)|(1<<MD_DISK_ACTIVE
);
2035 info
->events
= be32_to_cpu(ddf
->active
->seq
);
2038 info
->container_member
= ddf
->currentconf
->vcnum
;
2040 info
->recovery_start
= MaxSector
;
2041 info
->resync_start
= 0;
2042 info
->reshape_active
= 0;
2043 info
->recovery_blocked
= 0;
2044 if (!(ddf
->virt
->entries
[info
->container_member
].state
2045 & DDF_state_inconsistent
) &&
2046 (ddf
->virt
->entries
[info
->container_member
].init_state
2047 & DDF_initstate_mask
)
2049 info
->resync_start
= MaxSector
;
2051 uuid_from_super_ddf(st
, info
->uuid
);
2053 info
->array
.major_version
= -1;
2054 info
->array
.minor_version
= -2;
2055 sprintf(info
->text_version
, "/%s/%d",
2056 st
->container_devnm
,
2057 info
->container_member
);
2058 info
->safe_mode_delay
= DDF_SAFE_MODE_DELAY
;
2060 _ddf_array_name(info
->name
, ddf
, info
->container_member
);
2063 for (j
= 0; j
< map_disks
; j
++) {
2065 if (j
< info
->array
.raid_disks
) {
2066 int i
= find_phys(ddf
, vc
->conf
.phys_refnum
[j
]);
2068 (be16_to_cpu(ddf
->phys
->entries
[i
].state
)
2070 !(be16_to_cpu(ddf
->phys
->entries
[i
].state
)
2077 static int update_super_ddf(struct supertype
*st
, struct mdinfo
*info
,
2079 char *devname
, int verbose
,
2080 int uuid_set
, char *homehost
)
2082 /* For 'assemble' and 'force' we need to return non-zero if any
2083 * change was made. For others, the return value is ignored.
2084 * Update options are:
2085 * force-one : This device looks a bit old but needs to be included,
2086 * update age info appropriately.
2087 * assemble: clear any 'faulty' flag to allow this device to
2089 * force-array: Array is degraded but being forced, mark it clean
2090 * if that will be needed to assemble it.
2092 * newdev: not used ????
2093 * grow: Array has gained a new device - this is currently for
2095 * resync: mark as dirty so a resync will happen.
2096 * uuid: Change the uuid of the array to match what is given
2097 * homehost: update the recorded homehost
2098 * name: update the name - preserving the homehost
2099 * _reshape_progress: record new reshape_progress position.
2101 * Following are not relevant for this version:
2102 * sparc2.2 : update from old dodgey metadata
2103 * super-minor: change the preferred_minor number
2104 * summaries: update redundant counters.
2107 // struct ddf_super *ddf = st->sb;
2108 // struct vd_config *vd = find_vdcr(ddf, info->container_member);
2109 // struct virtual_entry *ve = find_ve(ddf);
2111 /* we don't need to handle "force-*" or "assemble" as
2112 * there is no need to 'trick' the kernel. We the metadata is
2113 * first updated to activate the array, all the implied modifications
2117 if (strcmp(update
, "grow") == 0) {
2119 } else if (strcmp(update
, "resync") == 0) {
2120 // info->resync_checkpoint = 0;
2121 } else if (strcmp(update
, "homehost") == 0) {
2122 /* homehost is stored in controller->vendor_data,
2123 * or it is when we are the vendor
2125 // if (info->vendor_is_local)
2126 // strcpy(ddf->controller.vendor_data, homehost);
2128 } else if (strcmp(update
, "name") == 0) {
2129 /* name is stored in virtual_entry->name */
2130 // memset(ve->name, ' ', 16);
2131 // strncpy(ve->name, info->name, 16);
2133 } else if (strcmp(update
, "_reshape_progress") == 0) {
2134 /* We don't support reshape yet */
2135 } else if (strcmp(update
, "assemble") == 0 ) {
2136 /* Do nothing, just succeed */
2141 // update_all_csum(ddf);
2146 static void make_header_guid(char *guid
)
2149 /* Create a DDF Header of Virtual Disk GUID */
2151 /* 24 bytes of fiction required.
2152 * first 8 are a 'vendor-id' - "Linux-MD"
2153 * next 8 are controller type.. how about 0X DEAD BEEF 0000 0000
2154 * Remaining 8 random number plus timestamp
2156 memcpy(guid
, T10
, sizeof(T10
));
2157 stamp
= cpu_to_be32(0xdeadbeef);
2158 memcpy(guid
+8, &stamp
, 4);
2159 stamp
= cpu_to_be32(0);
2160 memcpy(guid
+12, &stamp
, 4);
2161 stamp
= cpu_to_be32(time(0) - DECADE
);
2162 memcpy(guid
+16, &stamp
, 4);
2163 stamp
._v32
= random32();
2164 memcpy(guid
+20, &stamp
, 4);
2167 static unsigned int find_unused_vde(const struct ddf_super
*ddf
)
2170 for (i
= 0; i
< be16_to_cpu(ddf
->virt
->max_vdes
); i
++) {
2171 if (all_ff(ddf
->virt
->entries
[i
].guid
))
2174 return DDF_NOTFOUND
;
2177 static unsigned int find_vde_by_name(const struct ddf_super
*ddf
,
2182 return DDF_NOTFOUND
;
2183 for (i
= 0; i
< be16_to_cpu(ddf
->virt
->max_vdes
); i
++) {
2184 if (all_ff(ddf
->virt
->entries
[i
].guid
))
2186 if (!strncmp(name
, ddf
->virt
->entries
[i
].name
,
2187 sizeof(ddf
->virt
->entries
[i
].name
)))
2190 return DDF_NOTFOUND
;
2194 static unsigned int find_vde_by_guid(const struct ddf_super
*ddf
,
2198 if (guid
== NULL
|| all_ff(guid
))
2199 return DDF_NOTFOUND
;
2200 for (i
= 0; i
< be16_to_cpu(ddf
->virt
->max_vdes
); i
++)
2201 if (!memcmp(ddf
->virt
->entries
[i
].guid
, guid
, DDF_GUID_LEN
))
2203 return DDF_NOTFOUND
;
2207 static int init_super_ddf_bvd(struct supertype
*st
,
2208 mdu_array_info_t
*info
,
2209 unsigned long long size
,
2210 char *name
, char *homehost
,
2211 int *uuid
, unsigned long long data_offset
);
2213 static int init_super_ddf(struct supertype
*st
,
2214 mdu_array_info_t
*info
,
2215 unsigned long long size
, char *name
, char *homehost
,
2216 int *uuid
, unsigned long long data_offset
)
2218 /* This is primarily called by Create when creating a new array.
2219 * We will then get add_to_super called for each component, and then
2220 * write_init_super called to write it out to each device.
2221 * For DDF, Create can create on fresh devices or on a pre-existing
2223 * To create on a pre-existing array a different method will be called.
2224 * This one is just for fresh drives.
2226 * We need to create the entire 'ddf' structure which includes:
2227 * DDF headers - these are easy.
2228 * Controller data - a Sector describing this controller .. not that
2229 * this is a controller exactly.
2230 * Physical Disk Record - one entry per device, so
2231 * leave plenty of space.
2232 * Virtual Disk Records - again, just leave plenty of space.
2233 * This just lists VDs, doesn't give details
2234 * Config records - describes the VDs that use this disk
2235 * DiskData - describes 'this' device.
2236 * BadBlockManagement - empty
2237 * Diag Space - empty
2238 * Vendor Logs - Could we put bitmaps here?
2241 struct ddf_super
*ddf
;
2244 int max_phys_disks
, max_virt_disks
;
2245 unsigned long long sector
;
2249 struct phys_disk
*pd
;
2250 struct virtual_disk
*vd
;
2252 if (data_offset
!= INVALID_SECTORS
) {
2253 pr_err("data-offset not supported by DDF\n");
2258 return init_super_ddf_bvd(st
, info
, size
, name
, homehost
, uuid
,
2261 if (posix_memalign((void**)&ddf
, 512, sizeof(*ddf
)) != 0) {
2262 pr_err("%s could not allocate superblock\n", __func__
);
2265 memset(ddf
, 0, sizeof(*ddf
));
2266 ddf
->dlist
= NULL
; /* no physical disks yet */
2267 ddf
->conflist
= NULL
; /* No virtual disks yet */
2271 /* zeroing superblock */
2275 /* At least 32MB *must* be reserved for the ddf. So let's just
2276 * start 32MB from the end, and put the primary header there.
2277 * Don't do secondary for now.
2278 * We don't know exactly where that will be yet as it could be
2279 * different on each device. To just set up the lengths.
2283 ddf
->anchor
.magic
= DDF_HEADER_MAGIC
;
2284 make_header_guid(ddf
->anchor
.guid
);
2286 memcpy(ddf
->anchor
.revision
, DDF_REVISION_2
, 8);
2287 ddf
->anchor
.seq
= cpu_to_be32(1);
2288 ddf
->anchor
.timestamp
= cpu_to_be32(time(0) - DECADE
);
2289 ddf
->anchor
.openflag
= 0xFF;
2290 ddf
->anchor
.foreignflag
= 0;
2291 ddf
->anchor
.enforcegroups
= 0; /* Is this best?? */
2292 ddf
->anchor
.pad0
= 0xff;
2293 memset(ddf
->anchor
.pad1
, 0xff, 12);
2294 memset(ddf
->anchor
.header_ext
, 0xff, 32);
2295 ddf
->anchor
.primary_lba
= cpu_to_be64(~(__u64
)0);
2296 ddf
->anchor
.secondary_lba
= cpu_to_be64(~(__u64
)0);
2297 ddf
->anchor
.type
= DDF_HEADER_ANCHOR
;
2298 memset(ddf
->anchor
.pad2
, 0xff, 3);
2299 ddf
->anchor
.workspace_len
= cpu_to_be32(32768); /* Must be reserved */
2300 /* Put this at bottom of 32M reserved.. */
2301 ddf
->anchor
.workspace_lba
= cpu_to_be64(~(__u64
)0);
2302 max_phys_disks
= 1023; /* Should be enough */
2303 ddf
->anchor
.max_pd_entries
= cpu_to_be16(max_phys_disks
);
2304 max_virt_disks
= 255;
2305 ddf
->anchor
.max_vd_entries
= cpu_to_be16(max_virt_disks
); /* ?? */
2306 ddf
->anchor
.max_partitions
= cpu_to_be16(64); /* ?? */
2309 ddf
->conf_rec_len
= 1 + ROUND_UP(ddf
->mppe
* (4+8), 512)/512;
2310 ddf
->anchor
.config_record_len
= cpu_to_be16(ddf
->conf_rec_len
);
2311 ddf
->anchor
.max_primary_element_entries
= cpu_to_be16(ddf
->mppe
);
2312 memset(ddf
->anchor
.pad3
, 0xff, 54);
2313 /* controller sections is one sector long immediately
2314 * after the ddf header */
2316 ddf
->anchor
.controller_section_offset
= cpu_to_be32(sector
);
2317 ddf
->anchor
.controller_section_length
= cpu_to_be32(1);
2320 /* phys is 8 sectors after that */
2321 pdsize
= ROUND_UP(sizeof(struct phys_disk
) +
2322 sizeof(struct phys_disk_entry
)*max_phys_disks
,
2324 switch(pdsize
/512) {
2325 case 2: case 8: case 32: case 128: case 512: break;
2328 ddf
->anchor
.phys_section_offset
= cpu_to_be32(sector
);
2329 ddf
->anchor
.phys_section_length
=
2330 cpu_to_be32(pdsize
/512); /* max_primary_element_entries/8 */
2331 sector
+= pdsize
/512;
2333 /* virt is another 32 sectors */
2334 vdsize
= ROUND_UP(sizeof(struct virtual_disk
) +
2335 sizeof(struct virtual_entry
) * max_virt_disks
,
2337 switch(vdsize
/512) {
2338 case 2: case 8: case 32: case 128: case 512: break;
2341 ddf
->anchor
.virt_section_offset
= cpu_to_be32(sector
);
2342 ddf
->anchor
.virt_section_length
=
2343 cpu_to_be32(vdsize
/512); /* max_vd_entries/8 */
2344 sector
+= vdsize
/512;
2346 clen
= ddf
->conf_rec_len
* (ddf
->max_part
+1);
2347 ddf
->anchor
.config_section_offset
= cpu_to_be32(sector
);
2348 ddf
->anchor
.config_section_length
= cpu_to_be32(clen
);
2351 ddf
->anchor
.data_section_offset
= cpu_to_be32(sector
);
2352 ddf
->anchor
.data_section_length
= cpu_to_be32(1);
2355 ddf
->anchor
.bbm_section_length
= cpu_to_be32(0);
2356 ddf
->anchor
.bbm_section_offset
= cpu_to_be32(0xFFFFFFFF);
2357 ddf
->anchor
.diag_space_length
= cpu_to_be32(0);
2358 ddf
->anchor
.diag_space_offset
= cpu_to_be32(0xFFFFFFFF);
2359 ddf
->anchor
.vendor_length
= cpu_to_be32(0);
2360 ddf
->anchor
.vendor_offset
= cpu_to_be32(0xFFFFFFFF);
2362 memset(ddf
->anchor
.pad4
, 0xff, 256);
2364 memcpy(&ddf
->primary
, &ddf
->anchor
, 512);
2365 memcpy(&ddf
->secondary
, &ddf
->anchor
, 512);
2367 ddf
->primary
.openflag
= 1; /* I guess.. */
2368 ddf
->primary
.type
= DDF_HEADER_PRIMARY
;
2370 ddf
->secondary
.openflag
= 1; /* I guess.. */
2371 ddf
->secondary
.type
= DDF_HEADER_SECONDARY
;
2373 ddf
->active
= &ddf
->primary
;
2375 ddf
->controller
.magic
= DDF_CONTROLLER_MAGIC
;
2377 /* 24 more bytes of fiction required.
2378 * first 8 are a 'vendor-id' - "Linux-MD"
2379 * Remaining 16 are serial number.... maybe a hostname would do?
2381 memcpy(ddf
->controller
.guid
, T10
, sizeof(T10
));
2382 gethostname(hostname
, sizeof(hostname
));
2383 hostname
[sizeof(hostname
) - 1] = 0;
2384 hostlen
= strlen(hostname
);
2385 memcpy(ddf
->controller
.guid
+ 24 - hostlen
, hostname
, hostlen
);
2386 for (i
= strlen(T10
) ; i
+hostlen
< 24; i
++)
2387 ddf
->controller
.guid
[i
] = ' ';
2389 ddf
->controller
.type
.vendor_id
= cpu_to_be16(0xDEAD);
2390 ddf
->controller
.type
.device_id
= cpu_to_be16(0xBEEF);
2391 ddf
->controller
.type
.sub_vendor_id
= cpu_to_be16(0);
2392 ddf
->controller
.type
.sub_device_id
= cpu_to_be16(0);
2393 memcpy(ddf
->controller
.product_id
, "What Is My PID??", 16);
2394 memset(ddf
->controller
.pad
, 0xff, 8);
2395 memset(ddf
->controller
.vendor_data
, 0xff, 448);
2396 if (homehost
&& strlen(homehost
) < 440)
2397 strcpy((char*)ddf
->controller
.vendor_data
, homehost
);
2399 if (posix_memalign((void**)&pd
, 512, pdsize
) != 0) {
2400 pr_err("%s could not allocate pd\n", __func__
);
2404 ddf
->pdsize
= pdsize
;
2406 memset(pd
, 0xff, pdsize
);
2407 memset(pd
, 0, sizeof(*pd
));
2408 pd
->magic
= DDF_PHYS_RECORDS_MAGIC
;
2409 pd
->used_pdes
= cpu_to_be16(0);
2410 pd
->max_pdes
= cpu_to_be16(max_phys_disks
);
2411 memset(pd
->pad
, 0xff, 52);
2412 for (i
= 0; i
< max_phys_disks
; i
++)
2413 memset(pd
->entries
[i
].guid
, 0xff, DDF_GUID_LEN
);
2415 if (posix_memalign((void**)&vd
, 512, vdsize
) != 0) {
2416 pr_err("%s could not allocate vd\n", __func__
);
2420 ddf
->vdsize
= vdsize
;
2421 memset(vd
, 0, vdsize
);
2422 vd
->magic
= DDF_VIRT_RECORDS_MAGIC
;
2423 vd
->populated_vdes
= cpu_to_be16(0);
2424 vd
->max_vdes
= cpu_to_be16(max_virt_disks
);
2425 memset(vd
->pad
, 0xff, 52);
2427 for (i
=0; i
<max_virt_disks
; i
++)
2428 memset(&vd
->entries
[i
], 0xff, sizeof(struct virtual_entry
));
2431 ddf_set_updates_pending(ddf
);
2435 static int chunk_to_shift(int chunksize
)
2437 return ffs(chunksize
/512)-1;
2442 unsigned long long start
, size
;
2444 static int cmp_extent(const void *av
, const void *bv
)
2446 const struct extent
*a
= av
;
2447 const struct extent
*b
= bv
;
2448 if (a
->start
< b
->start
)
2450 if (a
->start
> b
->start
)
2455 static struct extent
*get_extents(struct ddf_super
*ddf
, struct dl
*dl
)
2457 /* find a list of used extents on the give physical device
2458 * (dnum) of the given ddf.
2459 * Return a malloced array of 'struct extent'
2461 * FIXME ignore DDF_Legacy devices?
2467 __u16 state
= be16_to_cpu(ddf
->phys
->entries
[dl
->pdnum
].state
);
2469 if ((state
& (DDF_Online
|DDF_Failed
|DDF_Missing
)) != DDF_Online
)
2472 rv
= xmalloc(sizeof(struct extent
) * (ddf
->max_part
+ 2));
2474 for (i
= 0; i
< ddf
->max_part
; i
++) {
2475 const struct vd_config
*bvd
;
2477 struct vcl
*v
= dl
->vlist
[i
];
2479 get_pd_index_from_refnum(v
, dl
->disk
.refnum
, ddf
->mppe
,
2480 &bvd
, &ibvd
) == DDF_NOTFOUND
)
2482 rv
[n
].start
= be64_to_cpu(LBA_OFFSET(ddf
, bvd
)[ibvd
]);
2483 rv
[n
].size
= be64_to_cpu(bvd
->blocks
);
2486 qsort(rv
, n
, sizeof(*rv
), cmp_extent
);
2488 rv
[n
].start
= be64_to_cpu(ddf
->phys
->entries
[dl
->pdnum
].config_size
);
2494 static int init_super_ddf_bvd(struct supertype
*st
,
2495 mdu_array_info_t
*info
,
2496 unsigned long long size
,
2497 char *name
, char *homehost
,
2498 int *uuid
, unsigned long long data_offset
)
2500 /* We are creating a BVD inside a pre-existing container.
2501 * so st->sb is already set.
2502 * We need to create a new vd_config and a new virtual_entry
2504 struct ddf_super
*ddf
= st
->sb
;
2505 unsigned int venum
, i
;
2506 struct virtual_entry
*ve
;
2508 struct vd_config
*vc
;
2510 if (find_vde_by_name(ddf
, name
) != DDF_NOTFOUND
) {
2511 pr_err("This ddf already has an array called %s\n", name
);
2514 venum
= find_unused_vde(ddf
);
2515 if (venum
== DDF_NOTFOUND
) {
2516 pr_err("Cannot find spare slot for virtual disk\n");
2519 ve
= &ddf
->virt
->entries
[venum
];
2521 /* A Virtual Disk GUID contains the T10 Vendor ID, controller type,
2522 * timestamp, random number
2524 make_header_guid(ve
->guid
);
2525 ve
->unit
= cpu_to_be16(info
->md_minor
);
2527 ve
->guid_crc
._v16
= crc32(0, (unsigned char *)ddf
->anchor
.guid
,
2529 ve
->type
= cpu_to_be16(0);
2530 ve
->state
= DDF_state_degraded
; /* Will be modified as devices are added */
2531 if (info
->state
& 1) /* clean */
2532 ve
->init_state
= DDF_init_full
;
2534 ve
->init_state
= DDF_init_not
;
2536 memset(ve
->pad1
, 0xff, 14);
2537 memset(ve
->name
, ' ', 16);
2539 strncpy(ve
->name
, name
, 16);
2540 ddf
->virt
->populated_vdes
=
2541 cpu_to_be16(be16_to_cpu(ddf
->virt
->populated_vdes
)+1);
2543 /* Now create a new vd_config */
2544 if (posix_memalign((void**)&vcl
, 512,
2545 (offsetof(struct vcl
, conf
) + ddf
->conf_rec_len
* 512)) != 0) {
2546 pr_err("%s could not allocate vd_config\n", __func__
);
2550 vcl
->block_sizes
= NULL
; /* FIXME not for CONCAT */
2553 vc
->magic
= DDF_VD_CONF_MAGIC
;
2554 memcpy(vc
->guid
, ve
->guid
, DDF_GUID_LEN
);
2555 vc
->timestamp
= cpu_to_be32(time(0)-DECADE
);
2556 vc
->seqnum
= cpu_to_be32(1);
2557 memset(vc
->pad0
, 0xff, 24);
2558 vc
->chunk_shift
= chunk_to_shift(info
->chunk_size
);
2559 if (layout_md2ddf(info
, vc
) == -1 ||
2560 be16_to_cpu(vc
->prim_elmnt_count
) > ddf
->mppe
) {
2561 pr_err("%s: unsupported RAID level/layout %d/%d with %d disks\n",
2562 __func__
, info
->level
, info
->layout
, info
->raid_disks
);
2566 vc
->sec_elmnt_seq
= 0;
2567 if (alloc_other_bvds(ddf
, vcl
) != 0) {
2568 pr_err("%s could not allocate other bvds\n",
2573 vc
->blocks
= cpu_to_be64(info
->size
* 2);
2574 vc
->array_blocks
= cpu_to_be64(
2575 calc_array_size(info
->level
, info
->raid_disks
, info
->layout
,
2576 info
->chunk_size
, info
->size
*2));
2577 memset(vc
->pad1
, 0xff, 8);
2578 vc
->spare_refs
[0] = cpu_to_be32(0xffffffff);
2579 vc
->spare_refs
[1] = cpu_to_be32(0xffffffff);
2580 vc
->spare_refs
[2] = cpu_to_be32(0xffffffff);
2581 vc
->spare_refs
[3] = cpu_to_be32(0xffffffff);
2582 vc
->spare_refs
[4] = cpu_to_be32(0xffffffff);
2583 vc
->spare_refs
[5] = cpu_to_be32(0xffffffff);
2584 vc
->spare_refs
[6] = cpu_to_be32(0xffffffff);
2585 vc
->spare_refs
[7] = cpu_to_be32(0xffffffff);
2586 memset(vc
->cache_pol
, 0, 8);
2588 memset(vc
->pad2
, 0xff, 3);
2589 memset(vc
->pad3
, 0xff, 52);
2590 memset(vc
->pad4
, 0xff, 192);
2591 memset(vc
->v0
, 0xff, 32);
2592 memset(vc
->v1
, 0xff, 32);
2593 memset(vc
->v2
, 0xff, 16);
2594 memset(vc
->v3
, 0xff, 16);
2595 memset(vc
->vendor
, 0xff, 32);
2597 memset(vc
->phys_refnum
, 0xff, 4*ddf
->mppe
);
2598 memset(vc
->phys_refnum
+ddf
->mppe
, 0x00, 8*ddf
->mppe
);
2600 for (i
= 1; i
< vc
->sec_elmnt_count
; i
++) {
2601 memcpy(vcl
->other_bvds
[i
-1], vc
, ddf
->conf_rec_len
* 512);
2602 vcl
->other_bvds
[i
-1]->sec_elmnt_seq
= i
;
2605 vcl
->next
= ddf
->conflist
;
2606 ddf
->conflist
= vcl
;
2607 ddf
->currentconf
= vcl
;
2608 ddf_set_updates_pending(ddf
);
2614 static int get_svd_state(const struct ddf_super
*, const struct vcl
*);
2616 static void add_to_super_ddf_bvd(struct supertype
*st
,
2617 mdu_disk_info_t
*dk
, int fd
, char *devname
)
2619 /* fd and devname identify a device with-in the ddf container (st).
2620 * dk identifies a location in the new BVD.
2621 * We need to find suitable free space in that device and update
2622 * the phys_refnum and lba_offset for the newly created vd_config.
2623 * We might also want to update the type in the phys_disk
2626 * Alternately: fd == -1 and we have already chosen which device to
2627 * use and recorded in dlist->raid_disk;
2630 struct ddf_super
*ddf
= st
->sb
;
2631 struct vd_config
*vc
;
2633 unsigned long long blocks
, pos
, esize
;
2635 unsigned int raid_disk
= dk
->raid_disk
;
2638 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
2639 if (dl
->raiddisk
== dk
->raid_disk
)
2642 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
2643 if (dl
->major
== dk
->major
&&
2644 dl
->minor
== dk
->minor
)
2647 if (!dl
|| ! (dk
->state
& (1<<MD_DISK_SYNC
)))
2650 vc
= &ddf
->currentconf
->conf
;
2651 if (vc
->sec_elmnt_count
> 1) {
2652 unsigned int n
= be16_to_cpu(vc
->prim_elmnt_count
);
2654 vc
= ddf
->currentconf
->other_bvds
[raid_disk
/ n
- 1];
2658 ex
= get_extents(ddf
, dl
);
2663 blocks
= be64_to_cpu(vc
->blocks
);
2664 if (ddf
->currentconf
->block_sizes
)
2665 blocks
= ddf
->currentconf
->block_sizes
[dk
->raid_disk
];
2668 esize
= ex
[i
].start
- pos
;
2669 if (esize
>= blocks
)
2671 pos
= ex
[i
].start
+ ex
[i
].size
;
2673 } while (ex
[i
-1].size
);
2679 ddf
->currentdev
= dk
->raid_disk
;
2680 vc
->phys_refnum
[raid_disk
] = dl
->disk
.refnum
;
2681 LBA_OFFSET(ddf
, vc
)[raid_disk
] = cpu_to_be64(pos
);
2683 for (i
= 0; i
< ddf
->max_part
; i
++)
2684 if (dl
->vlist
[i
] == NULL
)
2686 if (i
== ddf
->max_part
)
2688 dl
->vlist
[i
] = ddf
->currentconf
;
2693 dl
->devname
= devname
;
2695 /* Check if we can mark array as optimal yet */
2696 i
= ddf
->currentconf
->vcnum
;
2697 ddf
->virt
->entries
[i
].state
=
2698 (ddf
->virt
->entries
[i
].state
& ~DDF_state_mask
)
2699 | get_svd_state(ddf
, ddf
->currentconf
);
2700 be16_clear(ddf
->phys
->entries
[dl
->pdnum
].type
,
2701 cpu_to_be16(DDF_Global_Spare
));
2702 be16_set(ddf
->phys
->entries
[dl
->pdnum
].type
,
2703 cpu_to_be16(DDF_Active_in_VD
));
2704 dprintf("%s: added disk %d/%08x to VD %d/%s as disk %d\n",
2705 __func__
, dl
->pdnum
, be32_to_cpu(dl
->disk
.refnum
),
2706 ddf
->currentconf
->vcnum
, guid_str(vc
->guid
),
2708 ddf_set_updates_pending(ddf
);
2711 static unsigned int find_unused_pde(const struct ddf_super
*ddf
)
2714 for (i
= 0; i
< be16_to_cpu(ddf
->phys
->max_pdes
); i
++) {
2715 if (all_ff(ddf
->phys
->entries
[i
].guid
))
2718 return DDF_NOTFOUND
;
2721 static void _set_config_size(struct phys_disk_entry
*pde
, const struct dl
*dl
)
2724 cfs
= min(dl
->size
- 32*1024*2ULL, be64_to_cpu(dl
->primary_lba
));
2725 t
= be64_to_cpu(dl
->secondary_lba
);
2729 * Some vendor DDF structures interpret workspace_lba
2730 * very differently then us. Make a sanity check on the value.
2732 t
= be64_to_cpu(dl
->workspace_lba
);
2734 __u64 wsp
= cfs
- t
;
2735 if (wsp
> 1024*1024*2ULL && wsp
> dl
->size
/ 16) {
2736 pr_err("%s: %x:%x: workspace size 0x%llx too big, ignoring\n",
2737 __func__
, dl
->major
, dl
->minor
, wsp
);
2741 pde
->config_size
= cpu_to_be64(cfs
);
2742 dprintf("%s: %x:%x config_size %llx, DDF structure is %llx blocks\n",
2743 __func__
, dl
->major
, dl
->minor
, cfs
, dl
->size
-cfs
);
2746 /* add a device to a container, either while creating it or while
2747 * expanding a pre-existing container
2749 static int add_to_super_ddf(struct supertype
*st
,
2750 mdu_disk_info_t
*dk
, int fd
, char *devname
,
2751 unsigned long long data_offset
)
2753 struct ddf_super
*ddf
= st
->sb
;
2757 unsigned long long size
;
2758 struct phys_disk_entry
*pde
;
2763 if (ddf
->currentconf
) {
2764 add_to_super_ddf_bvd(st
, dk
, fd
, devname
);
2768 /* This is device numbered dk->number. We need to create
2769 * a phys_disk entry and a more detailed disk_data entry.
2772 n
= find_unused_pde(ddf
);
2773 if (n
== DDF_NOTFOUND
) {
2774 pr_err("%s: No free slot in array, cannot add disk\n",
2778 pde
= &ddf
->phys
->entries
[n
];
2779 get_dev_size(fd
, NULL
, &size
);
2780 if (size
<= 32*1024*1024) {
2781 pr_err("%s: device size must be at least 32MB\n",
2787 if (posix_memalign((void**)&dd
, 512,
2788 sizeof(*dd
) + sizeof(dd
->vlist
[0]) * ddf
->max_part
) != 0) {
2789 pr_err("%s could allocate buffer for new disk, aborting\n",
2793 dd
->major
= major(stb
.st_rdev
);
2794 dd
->minor
= minor(stb
.st_rdev
);
2795 dd
->devname
= devname
;
2799 dd
->disk
.magic
= DDF_PHYS_DATA_MAGIC
;
2801 tm
= localtime(&now
);
2802 sprintf(dd
->disk
.guid
, "%8s%04d%02d%02d",
2803 T10
, tm
->tm_year
+1900, tm
->tm_mon
+1, tm
->tm_mday
);
2804 tptr
= (__u32
*)(dd
->disk
.guid
+ 16);
2805 *tptr
++ = random32();
2809 /* Cannot be bothered finding a CRC of some irrelevant details*/
2810 dd
->disk
.refnum
._v32
= random32();
2811 for (i
= be16_to_cpu(ddf
->active
->max_pd_entries
);
2813 if (be32_eq(ddf
->phys
->entries
[i
-1].refnum
,
2818 dd
->disk
.forced_ref
= 1;
2819 dd
->disk
.forced_guid
= 1;
2820 memset(dd
->disk
.vendor
, ' ', 32);
2821 memcpy(dd
->disk
.vendor
, "Linux", 5);
2822 memset(dd
->disk
.pad
, 0xff, 442);
2823 for (i
= 0; i
< ddf
->max_part
; i
++)
2824 dd
->vlist
[i
] = NULL
;
2828 if (st
->update_tail
) {
2829 int len
= (sizeof(struct phys_disk
) +
2830 sizeof(struct phys_disk_entry
));
2831 struct phys_disk
*pd
;
2834 pd
->magic
= DDF_PHYS_RECORDS_MAGIC
;
2835 pd
->used_pdes
= cpu_to_be16(n
);
2836 pde
= &pd
->entries
[0];
2839 ddf
->phys
->used_pdes
= cpu_to_be16(
2840 1 + be16_to_cpu(ddf
->phys
->used_pdes
));
2842 memcpy(pde
->guid
, dd
->disk
.guid
, DDF_GUID_LEN
);
2843 pde
->refnum
= dd
->disk
.refnum
;
2844 pde
->type
= cpu_to_be16(DDF_Forced_PD_GUID
| DDF_Global_Spare
);
2845 pde
->state
= cpu_to_be16(DDF_Online
);
2848 * If there is already a device in dlist, try to reserve the same
2849 * amount of workspace. Otherwise, use 32MB.
2850 * We checked disk size above already.
2852 #define __calc_lba(new, old, lba, mb) do { \
2853 unsigned long long dif; \
2854 if ((old) != NULL) \
2855 dif = (old)->size - be64_to_cpu((old)->lba); \
2857 dif = (new)->size; \
2858 if ((new)->size > dif) \
2859 (new)->lba = cpu_to_be64((new)->size - dif); \
2861 (new)->lba = cpu_to_be64((new)->size - (mb*1024*2)); \
2863 __calc_lba(dd
, ddf
->dlist
, workspace_lba
, 32);
2864 __calc_lba(dd
, ddf
->dlist
, primary_lba
, 16);
2865 if (ddf
->dlist
== NULL
||
2866 be64_to_cpu(ddf
->dlist
->secondary_lba
) != ~(__u64
)0)
2867 __calc_lba(dd
, ddf
->dlist
, secondary_lba
, 32);
2868 _set_config_size(pde
, dd
);
2870 sprintf(pde
->path
, "%17.17s","Information: nil") ;
2871 memset(pde
->pad
, 0xff, 6);
2873 if (st
->update_tail
) {
2874 dd
->next
= ddf
->add_list
;
2877 dd
->next
= ddf
->dlist
;
2879 ddf_set_updates_pending(ddf
);
2885 static int remove_from_super_ddf(struct supertype
*st
, mdu_disk_info_t
*dk
)
2887 struct ddf_super
*ddf
= st
->sb
;
2890 /* mdmon has noticed that this disk (dk->major/dk->minor) has
2891 * disappeared from the container.
2892 * We need to arrange that it disappears from the metadata and
2893 * internal data structures too.
2894 * Most of the work is done by ddf_process_update which edits
2895 * the metadata and closes the file handle and attaches the memory
2896 * where free_updates will free it.
2898 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
2899 if (dl
->major
== dk
->major
&&
2900 dl
->minor
== dk
->minor
)
2905 if (st
->update_tail
) {
2906 int len
= (sizeof(struct phys_disk
) +
2907 sizeof(struct phys_disk_entry
));
2908 struct phys_disk
*pd
;
2911 pd
->magic
= DDF_PHYS_RECORDS_MAGIC
;
2912 pd
->used_pdes
= cpu_to_be16(dl
->pdnum
);
2913 pd
->entries
[0].state
= cpu_to_be16(DDF_Missing
);
2914 append_metadata_update(st
, pd
, len
);
2921 * This is the write_init_super method for a ddf container. It is
2922 * called when creating a container or adding another device to a
2925 #define NULL_CONF_SZ 4096
2927 static int __write_ddf_structure(struct dl
*d
, struct ddf_super
*ddf
, __u8 type
)
2929 unsigned long long sector
;
2930 struct ddf_header
*header
;
2931 int fd
, i
, n_config
, conf_size
, buf_size
;
2938 case DDF_HEADER_PRIMARY
:
2939 header
= &ddf
->primary
;
2940 sector
= be64_to_cpu(header
->primary_lba
);
2942 case DDF_HEADER_SECONDARY
:
2943 header
= &ddf
->secondary
;
2944 sector
= be64_to_cpu(header
->secondary_lba
);
2949 if (sector
== ~(__u64
)0)
2952 header
->type
= type
;
2953 header
->openflag
= 1;
2954 header
->crc
= calc_crc(header
, 512);
2956 lseek64(fd
, sector
<<9, 0);
2957 if (write(fd
, header
, 512) < 0)
2960 ddf
->controller
.crc
= calc_crc(&ddf
->controller
, 512);
2961 if (write(fd
, &ddf
->controller
, 512) < 0)
2964 ddf
->phys
->crc
= calc_crc(ddf
->phys
, ddf
->pdsize
);
2965 if (write(fd
, ddf
->phys
, ddf
->pdsize
) < 0)
2967 ddf
->virt
->crc
= calc_crc(ddf
->virt
, ddf
->vdsize
);
2968 if (write(fd
, ddf
->virt
, ddf
->vdsize
) < 0)
2971 /* Now write lots of config records. */
2972 n_config
= ddf
->max_part
;
2973 conf_size
= ddf
->conf_rec_len
* 512;
2975 buf_size
= conf_size
* (n_config
+ 1);
2977 if (posix_memalign((void**)&conf
, 512, buf_size
) != 0)
2981 for (i
= 0 ; i
<= n_config
; i
++) {
2983 struct vd_config
*vdc
= NULL
;
2984 if (i
== n_config
) {
2985 c
= (struct vcl
*)d
->spare
;
2992 get_pd_index_from_refnum(
2995 (const struct vd_config
**)&vdc
,
2999 dprintf("writing conf record %i on disk %08x for %s/%u\n",
3000 i
, be32_to_cpu(d
->disk
.refnum
),
3001 guid_str(vdc
->guid
),
3002 vdc
->sec_elmnt_seq
);
3003 vdc
->seqnum
= header
->seq
;
3004 vdc
->crc
= calc_crc(vdc
, conf_size
);
3005 memcpy(conf
+ i
*conf_size
, vdc
, conf_size
);
3007 memset(conf
+ i
*conf_size
, 0xff, conf_size
);
3009 if (write(fd
, conf
, buf_size
) != buf_size
)
3012 d
->disk
.crc
= calc_crc(&d
->disk
, 512);
3013 if (write(fd
, &d
->disk
, 512) < 0)
3018 header
->openflag
= 0;
3019 header
->crc
= calc_crc(header
, 512);
3021 lseek64(fd
, sector
<<9, 0);
3022 if (write(fd
, header
, 512) < 0)
3028 static int _write_super_to_disk(struct ddf_super
*ddf
, struct dl
*d
)
3030 unsigned long long size
;
3035 /* We need to fill in the primary, (secondary) and workspace
3036 * lba's in the headers, set their checksums,
3037 * Also checksum phys, virt....
3039 * Then write everything out, finally the anchor is written.
3041 get_dev_size(fd
, NULL
, &size
);
3043 if (be64_to_cpu(d
->workspace_lba
) != 0ULL)
3044 ddf
->anchor
.workspace_lba
= d
->workspace_lba
;
3046 ddf
->anchor
.workspace_lba
=
3047 cpu_to_be64(size
- 32*1024*2);
3048 if (be64_to_cpu(d
->primary_lba
) != 0ULL)
3049 ddf
->anchor
.primary_lba
= d
->primary_lba
;
3051 ddf
->anchor
.primary_lba
=
3052 cpu_to_be64(size
- 16*1024*2);
3053 if (be64_to_cpu(d
->secondary_lba
) != 0ULL)
3054 ddf
->anchor
.secondary_lba
= d
->secondary_lba
;
3056 ddf
->anchor
.secondary_lba
=
3057 cpu_to_be64(size
- 32*1024*2);
3058 ddf
->anchor
.seq
= ddf
->active
->seq
;
3059 memcpy(&ddf
->primary
, &ddf
->anchor
, 512);
3060 memcpy(&ddf
->secondary
, &ddf
->anchor
, 512);
3062 ddf
->anchor
.openflag
= 0xFF; /* 'open' means nothing */
3063 ddf
->anchor
.seq
= cpu_to_be32(0xFFFFFFFF); /* no sequencing in anchor */
3064 ddf
->anchor
.crc
= calc_crc(&ddf
->anchor
, 512);
3066 if (!__write_ddf_structure(d
, ddf
, DDF_HEADER_PRIMARY
))
3069 if (!__write_ddf_structure(d
, ddf
, DDF_HEADER_SECONDARY
))
3072 lseek64(fd
, (size
-1)*512, SEEK_SET
);
3073 if (write(fd
, &ddf
->anchor
, 512) < 0)
3080 static int __write_init_super_ddf(struct supertype
*st
)
3082 struct ddf_super
*ddf
= st
->sb
;
3087 pr_state(ddf
, __func__
);
3089 /* try to write updated metadata,
3090 * if we catch a failure move on to the next disk
3092 for (d
= ddf
->dlist
; d
; d
=d
->next
) {
3094 successes
+= _write_super_to_disk(ddf
, d
);
3097 return attempts
!= successes
;
3100 static int write_init_super_ddf(struct supertype
*st
)
3102 struct ddf_super
*ddf
= st
->sb
;
3103 struct vcl
*currentconf
= ddf
->currentconf
;
3105 /* we are done with currentconf reset it to point st at the container */
3106 ddf
->currentconf
= NULL
;
3108 if (st
->update_tail
) {
3109 /* queue the virtual_disk and vd_config as metadata updates */
3110 struct virtual_disk
*vd
;
3111 struct vd_config
*vc
;
3116 int len
= (sizeof(struct phys_disk
) +
3117 sizeof(struct phys_disk_entry
));
3119 /* adding a disk to the container. */
3123 append_metadata_update(st
, ddf
->add_list
->mdupdate
, len
);
3124 ddf
->add_list
->mdupdate
= NULL
;
3128 /* Newly created VD */
3130 /* First the virtual disk. We have a slightly fake header */
3131 len
= sizeof(struct virtual_disk
) + sizeof(struct virtual_entry
);
3134 vd
->entries
[0] = ddf
->virt
->entries
[currentconf
->vcnum
];
3135 vd
->populated_vdes
= cpu_to_be16(currentconf
->vcnum
);
3136 append_metadata_update(st
, vd
, len
);
3138 /* Then the vd_config */
3139 len
= ddf
->conf_rec_len
* 512;
3140 tlen
= len
* currentconf
->conf
.sec_elmnt_count
;
3142 memcpy(vc
, ¤tconf
->conf
, len
);
3143 for (i
= 1; i
< currentconf
->conf
.sec_elmnt_count
; i
++)
3144 memcpy((char *)vc
+ i
*len
, currentconf
->other_bvds
[i
-1],
3146 append_metadata_update(st
, vc
, tlen
);
3148 /* FIXME I need to close the fds! */
3153 for (d
= ddf
->dlist
; d
; d
=d
->next
)
3154 while (Kill(d
->devname
, NULL
, 0, -1, 1) == 0);
3155 return __write_init_super_ddf(st
);
3161 static __u64
avail_size_ddf(struct supertype
*st
, __u64 devsize
,
3162 unsigned long long data_offset
)
3164 /* We must reserve the last 32Meg */
3165 if (devsize
<= 32*1024*2)
3167 return devsize
- 32*1024*2;
3172 static int reserve_space(struct supertype
*st
, int raiddisks
,
3173 unsigned long long size
, int chunk
,
3174 unsigned long long *freesize
)
3176 /* Find 'raiddisks' spare extents at least 'size' big (but
3177 * only caring about multiples of 'chunk') and remember
3179 * If the cannot be found, fail.
3182 struct ddf_super
*ddf
= st
->sb
;
3185 for (dl
= ddf
->dlist
; dl
; dl
=dl
->next
) {
3189 /* Now find largest extent on each device */
3190 for (dl
= ddf
->dlist
; dl
; dl
=dl
->next
) {
3191 struct extent
*e
= get_extents(ddf
, dl
);
3192 unsigned long long pos
= 0;
3195 unsigned long long minsize
= size
;
3203 unsigned long long esize
;
3204 esize
= e
[i
].start
- pos
;
3205 if (esize
>= minsize
) {
3209 pos
= e
[i
].start
+ e
[i
].size
;
3211 } while (e
[i
-1].size
);
3214 dl
->esize
= minsize
;
3218 if (cnt
< raiddisks
) {
3219 pr_err("not enough devices with space to create array.\n");
3220 return 0; /* No enough free spaces large enough */
3223 /* choose the largest size of which there are at least 'raiddisk' */
3224 for (dl
= ddf
->dlist
; dl
; dl
=dl
->next
) {
3226 if (dl
->esize
<= size
)
3228 /* This is bigger than 'size', see if there are enough */
3230 for (dl2
= ddf
->dlist
; dl2
; dl2
=dl2
->next
)
3231 if (dl2
->esize
>= dl
->esize
)
3233 if (cnt
>= raiddisks
)
3237 size
= size
/ chunk
;
3242 pr_err("not enough spare devices to create array.\n");
3246 /* We have a 'size' of which there are enough spaces.
3247 * We simply do a first-fit */
3249 for (dl
= ddf
->dlist
; dl
&& cnt
< raiddisks
; dl
=dl
->next
) {
3250 if (dl
->esize
< size
)
3260 validate_geometry_ddf_container(struct supertype
*st
,
3261 int level
, int layout
, int raiddisks
,
3262 int chunk
, unsigned long long size
,
3263 unsigned long long data_offset
,
3264 char *dev
, unsigned long long *freesize
,
3267 static int validate_geometry_ddf_bvd(struct supertype
*st
,
3268 int level
, int layout
, int raiddisks
,
3269 int *chunk
, unsigned long long size
,
3270 unsigned long long data_offset
,
3271 char *dev
, unsigned long long *freesize
,
3274 static int validate_geometry_ddf(struct supertype
*st
,
3275 int level
, int layout
, int raiddisks
,
3276 int *chunk
, unsigned long long size
,
3277 unsigned long long data_offset
,
3278 char *dev
, unsigned long long *freesize
,
3285 /* ddf potentially supports lots of things, but it depends on
3286 * what devices are offered (and maybe kernel version?)
3287 * If given unused devices, we will make a container.
3288 * If given devices in a container, we will make a BVD.
3289 * If given BVDs, we make an SVD, changing all the GUIDs in the process.
3292 if (*chunk
== UnSet
)
3293 *chunk
= DEFAULT_CHUNK
;
3295 if (level
== -1000000) level
= LEVEL_CONTAINER
;
3296 if (level
== LEVEL_CONTAINER
) {
3297 /* Must be a fresh device to add to a container */
3298 return validate_geometry_ddf_container(st
, level
, layout
,
3300 size
, data_offset
, dev
,
3306 mdu_array_info_t array
= {
3307 .level
= level
, .layout
= layout
,
3308 .raid_disks
= raiddisks
3310 struct vd_config conf
;
3311 if (layout_md2ddf(&array
, &conf
) == -1) {
3313 pr_err("DDF does not support level %d /layout %d arrays with %d disks\n",
3314 level
, layout
, raiddisks
);
3317 /* Should check layout? etc */
3319 if (st
->sb
&& freesize
) {
3320 /* --create was given a container to create in.
3321 * So we need to check that there are enough
3322 * free spaces and return the amount of space.
3323 * We may as well remember which drives were
3324 * chosen so that add_to_super/getinfo_super
3327 return reserve_space(st
, raiddisks
, size
, *chunk
, freesize
);
3333 /* A container has already been opened, so we are
3334 * creating in there. Maybe a BVD, maybe an SVD.
3335 * Should make a distinction one day.
3337 return validate_geometry_ddf_bvd(st
, level
, layout
, raiddisks
,
3338 chunk
, size
, data_offset
, dev
,
3342 /* This is the first device for the array.
3343 * If it is a container, we read it in and do automagic allocations,
3344 * no other devices should be given.
3345 * Otherwise it must be a member device of a container, and we
3346 * do manual allocation.
3347 * Later we should check for a BVD and make an SVD.
3349 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
3351 sra
= sysfs_read(fd
, NULL
, GET_VERSION
);
3353 if (sra
&& sra
->array
.major_version
== -1 &&
3354 strcmp(sra
->text_version
, "ddf") == 0) {
3357 /* find space for 'n' devices. */
3358 /* remember the devices */
3359 /* Somehow return the fact that we have enough */
3363 pr_err("ddf: Cannot create this array "
3364 "on device %s - a container is required.\n",
3368 if (errno
!= EBUSY
|| (fd
= open(dev
, O_RDONLY
, 0)) < 0) {
3370 pr_err("ddf: Cannot open %s: %s\n",
3371 dev
, strerror(errno
));
3374 /* Well, it is in use by someone, maybe a 'ddf' container. */
3375 cfd
= open_container(fd
);
3379 pr_err("ddf: Cannot use %s: %s\n",
3380 dev
, strerror(EBUSY
));
3383 sra
= sysfs_read(cfd
, NULL
, GET_VERSION
);
3385 if (sra
&& sra
->array
.major_version
== -1 &&
3386 strcmp(sra
->text_version
, "ddf") == 0) {
3387 /* This is a member of a ddf container. Load the container
3388 * and try to create a bvd
3390 struct ddf_super
*ddf
;
3391 if (load_super_ddf_all(st
, cfd
, (void **)&ddf
, NULL
) == 0) {
3393 strcpy(st
->container_devnm
, fd2devnm(cfd
));
3395 return validate_geometry_ddf_bvd(st
, level
, layout
,
3396 raiddisks
, chunk
, size
,
3402 } else /* device may belong to a different container */
3409 validate_geometry_ddf_container(struct supertype
*st
,
3410 int level
, int layout
, int raiddisks
,
3411 int chunk
, unsigned long long size
,
3412 unsigned long long data_offset
,
3413 char *dev
, unsigned long long *freesize
,
3417 unsigned long long ldsize
;
3419 if (level
!= LEVEL_CONTAINER
)
3424 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
3427 pr_err("ddf: Cannot open %s: %s\n",
3428 dev
, strerror(errno
));
3431 if (!get_dev_size(fd
, dev
, &ldsize
)) {
3437 *freesize
= avail_size_ddf(st
, ldsize
>> 9, INVALID_SECTORS
);
3444 static int validate_geometry_ddf_bvd(struct supertype
*st
,
3445 int level
, int layout
, int raiddisks
,
3446 int *chunk
, unsigned long long size
,
3447 unsigned long long data_offset
,
3448 char *dev
, unsigned long long *freesize
,
3452 struct ddf_super
*ddf
= st
->sb
;
3454 unsigned long long pos
= 0;
3455 unsigned long long maxsize
;
3458 /* ddf/bvd supports lots of things, but not containers */
3459 if (level
== LEVEL_CONTAINER
) {
3461 pr_err("DDF cannot create a container within an container\n");
3464 /* We must have the container info already read in. */
3469 /* General test: make sure there is space for
3470 * 'raiddisks' device extents of size 'size'.
3472 unsigned long long minsize
= size
;
3476 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
3482 e
= get_extents(ddf
, dl
);
3485 unsigned long long esize
;
3486 esize
= e
[i
].start
- pos
;
3487 if (esize
>= minsize
)
3489 pos
= e
[i
].start
+ e
[i
].size
;
3491 } while (e
[i
-1].size
);
3496 if (dcnt
< raiddisks
) {
3498 pr_err("ddf: Not enough devices with "
3499 "space for this array (%d < %d)\n",
3505 /* This device must be a member of the set */
3506 if (stat(dev
, &stb
) < 0)
3508 if ((S_IFMT
& stb
.st_mode
) != S_IFBLK
)
3510 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
) {
3511 if (dl
->major
== (int)major(stb
.st_rdev
) &&
3512 dl
->minor
== (int)minor(stb
.st_rdev
))
3517 pr_err("ddf: %s is not in the "
3522 e
= get_extents(ddf
, dl
);
3526 unsigned long long esize
;
3527 esize
= e
[i
].start
- pos
;
3528 if (esize
>= maxsize
)
3530 pos
= e
[i
].start
+ e
[i
].size
;
3532 } while (e
[i
-1].size
);
3533 *freesize
= maxsize
;
3539 static int load_super_ddf_all(struct supertype
*st
, int fd
,
3540 void **sbp
, char *devname
)
3543 struct ddf_super
*super
;
3544 struct mdinfo
*sd
, *best
= NULL
;
3550 sra
= sysfs_read(fd
, 0, GET_LEVEL
|GET_VERSION
|GET_DEVS
|GET_STATE
);
3553 if (sra
->array
.major_version
!= -1 ||
3554 sra
->array
.minor_version
!= -2 ||
3555 strcmp(sra
->text_version
, "ddf") != 0)
3558 if (posix_memalign((void**)&super
, 512, sizeof(*super
)) != 0)
3560 memset(super
, 0, sizeof(*super
));
3562 /* first, try each device, and choose the best ddf */
3563 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
3565 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
3566 dfd
= dev_open(nm
, O_RDONLY
);
3569 rv
= load_ddf_headers(dfd
, super
, NULL
);
3572 seq
= be32_to_cpu(super
->active
->seq
);
3573 if (super
->active
->openflag
)
3575 if (!best
|| seq
> bestseq
) {
3583 /* OK, load this ddf */
3584 sprintf(nm
, "%d:%d", best
->disk
.major
, best
->disk
.minor
);
3585 dfd
= dev_open(nm
, O_RDONLY
);
3588 load_ddf_headers(dfd
, super
, NULL
);
3589 load_ddf_global(dfd
, super
, NULL
);
3591 /* Now we need the device-local bits */
3592 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
3595 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
3596 dfd
= dev_open(nm
, O_RDWR
);
3599 rv
= load_ddf_headers(dfd
, super
, NULL
);
3601 rv
= load_ddf_local(dfd
, super
, NULL
, 1);
3607 if (st
->ss
== NULL
) {
3608 st
->ss
= &super_ddf
;
3609 st
->minor_version
= 0;
3612 strcpy(st
->container_devnm
, fd2devnm(fd
));
3616 static int load_container_ddf(struct supertype
*st
, int fd
,
3619 return load_super_ddf_all(st
, fd
, &st
->sb
, devname
);
3622 #endif /* MDASSEMBLE */
3624 static int check_secondary(const struct vcl
*vc
)
3626 const struct vd_config
*conf
= &vc
->conf
;
3629 /* The only DDF secondary RAID level md can support is
3630 * RAID 10, if the stripe sizes and Basic volume sizes
3632 * Other configurations could in theory be supported by exposing
3633 * the BVDs to user space and using device mapper for the secondary
3634 * mapping. So far we don't support that.
3637 __u64 sec_elements
[4] = {0, 0, 0, 0};
3638 #define __set_sec_seen(n) (sec_elements[(n)>>6] |= (1<<((n)&63)))
3639 #define __was_sec_seen(n) ((sec_elements[(n)>>6] & (1<<((n)&63))) != 0)
3641 if (vc
->other_bvds
== NULL
) {
3642 pr_err("No BVDs for secondary RAID found\n");
3645 if (conf
->prl
!= DDF_RAID1
) {
3646 pr_err("Secondary RAID level only supported for mirrored BVD\n");
3649 if (conf
->srl
!= DDF_2STRIPED
&& conf
->srl
!= DDF_2SPANNED
) {
3650 pr_err("Secondary RAID level %d is unsupported\n",
3654 __set_sec_seen(conf
->sec_elmnt_seq
);
3655 for (i
= 0; i
< conf
->sec_elmnt_count
-1; i
++) {
3656 const struct vd_config
*bvd
= vc
->other_bvds
[i
];
3657 if (bvd
->sec_elmnt_seq
== DDF_UNUSED_BVD
)
3659 if (bvd
->srl
!= conf
->srl
) {
3660 pr_err("Inconsistent secondary RAID level across BVDs\n");
3663 if (bvd
->prl
!= conf
->prl
) {
3664 pr_err("Different RAID levels for BVDs are unsupported\n");
3667 if (!be16_eq(bvd
->prim_elmnt_count
, conf
->prim_elmnt_count
)) {
3668 pr_err("All BVDs must have the same number of primary elements\n");
3671 if (bvd
->chunk_shift
!= conf
->chunk_shift
) {
3672 pr_err("Different strip sizes for BVDs are unsupported\n");
3675 if (!be64_eq(bvd
->array_blocks
, conf
->array_blocks
)) {
3676 pr_err("Different BVD sizes are unsupported\n");
3679 __set_sec_seen(bvd
->sec_elmnt_seq
);
3681 for (i
= 0; i
< conf
->sec_elmnt_count
; i
++) {
3682 if (!__was_sec_seen(i
)) {
3683 pr_err("BVD %d is missing\n", i
);
3690 static unsigned int get_pd_index_from_refnum(const struct vcl
*vc
,
3691 be32 refnum
, unsigned int nmax
,
3692 const struct vd_config
**bvd
,
3695 unsigned int i
, j
, n
, sec
, cnt
;
3697 cnt
= be16_to_cpu(vc
->conf
.prim_elmnt_count
);
3698 sec
= (vc
->conf
.sec_elmnt_count
== 1 ? 0 : vc
->conf
.sec_elmnt_seq
);
3700 for (i
= 0, j
= 0 ; i
< nmax
; i
++) {
3701 /* j counts valid entries for this BVD */
3702 if (be32_to_cpu(vc
->conf
.phys_refnum
[i
]) != 0xffffffff)
3704 if (be32_eq(vc
->conf
.phys_refnum
[i
], refnum
)) {
3707 return sec
* cnt
+ j
- 1;
3710 if (vc
->other_bvds
== NULL
)
3713 for (n
= 1; n
< vc
->conf
.sec_elmnt_count
; n
++) {
3714 struct vd_config
*vd
= vc
->other_bvds
[n
-1];
3715 sec
= vd
->sec_elmnt_seq
;
3716 if (sec
== DDF_UNUSED_BVD
)
3718 for (i
= 0, j
= 0 ; i
< nmax
; i
++) {
3719 if (be32_to_cpu(vd
->phys_refnum
[i
]) != 0xffffffff)
3721 if (be32_eq(vd
->phys_refnum
[i
], refnum
)) {
3724 return sec
* cnt
+ j
- 1;
3730 return DDF_NOTFOUND
;
3733 static struct mdinfo
*container_content_ddf(struct supertype
*st
, char *subarray
)
3735 /* Given a container loaded by load_super_ddf_all,
3736 * extract information about all the arrays into
3739 * For each vcl in conflist: create an mdinfo, fill it in,
3740 * then look for matching devices (phys_refnum) in dlist
3741 * and create appropriate device mdinfo.
3743 struct ddf_super
*ddf
= st
->sb
;
3744 struct mdinfo
*rest
= NULL
;
3747 for (vc
= ddf
->conflist
; vc
; vc
=vc
->next
)
3750 struct mdinfo
*this;
3756 (strtoul(subarray
, &ep
, 10) != vc
->vcnum
||
3760 if (vc
->conf
.sec_elmnt_count
> 1) {
3761 if (check_secondary(vc
) != 0)
3765 this = xcalloc(1, sizeof(*this));
3769 if (layout_ddf2md(&vc
->conf
, &this->array
))
3771 this->array
.md_minor
= -1;
3772 this->array
.major_version
= -1;
3773 this->array
.minor_version
= -2;
3774 this->safe_mode_delay
= DDF_SAFE_MODE_DELAY
;
3775 cptr
= (__u32
*)(vc
->conf
.guid
+ 16);
3776 this->array
.ctime
= DECADE
+ __be32_to_cpu(*cptr
);
3777 this->array
.utime
= DECADE
+
3778 be32_to_cpu(vc
->conf
.timestamp
);
3779 this->array
.chunk_size
= 512 << vc
->conf
.chunk_shift
;
3782 if ((ddf
->virt
->entries
[i
].state
& DDF_state_inconsistent
) ||
3783 (ddf
->virt
->entries
[i
].init_state
& DDF_initstate_mask
) !=
3785 this->array
.state
= 0;
3786 this->resync_start
= 0;
3788 this->array
.state
= 1;
3789 this->resync_start
= MaxSector
;
3791 _ddf_array_name(this->name
, ddf
, i
);
3792 memset(this->uuid
, 0, sizeof(this->uuid
));
3793 this->component_size
= be64_to_cpu(vc
->conf
.blocks
);
3794 this->array
.size
= this->component_size
/ 2;
3795 this->container_member
= i
;
3797 ddf
->currentconf
= vc
;
3798 uuid_from_super_ddf(st
, this->uuid
);
3800 ddf
->currentconf
= NULL
;
3802 sprintf(this->text_version
, "/%s/%d",
3803 st
->container_devnm
, this->container_member
);
3805 for (pd
= 0; pd
< be16_to_cpu(ddf
->phys
->used_pdes
); pd
++) {
3808 const struct vd_config
*bvd
;
3812 if (be32_to_cpu(ddf
->phys
->entries
[pd
].refnum
)
3816 stt
= be16_to_cpu(ddf
->phys
->entries
[pd
].state
);
3817 if ((stt
& (DDF_Online
|DDF_Failed
|DDF_Rebuilding
))
3821 i
= get_pd_index_from_refnum(
3822 vc
, ddf
->phys
->entries
[pd
].refnum
,
3823 ddf
->mppe
, &bvd
, &iphys
);
3824 if (i
== DDF_NOTFOUND
)
3827 this->array
.working_disks
++;
3829 for (d
= ddf
->dlist
; d
; d
=d
->next
)
3830 if (be32_eq(d
->disk
.refnum
,
3831 ddf
->phys
->entries
[pd
].refnum
))
3834 /* Haven't found that one yet, maybe there are others */
3837 dev
= xcalloc(1, sizeof(*dev
));
3838 dev
->next
= this->devs
;
3841 dev
->disk
.number
= be32_to_cpu(d
->disk
.refnum
);
3842 dev
->disk
.major
= d
->major
;
3843 dev
->disk
.minor
= d
->minor
;
3844 dev
->disk
.raid_disk
= i
;
3845 dev
->disk
.state
= (1<<MD_DISK_SYNC
)|(1<<MD_DISK_ACTIVE
);
3846 dev
->recovery_start
= MaxSector
;
3848 dev
->events
= be32_to_cpu(ddf
->active
->seq
);
3850 be64_to_cpu(LBA_OFFSET(ddf
, bvd
)[iphys
]);
3851 dev
->component_size
= be64_to_cpu(bvd
->blocks
);
3853 strcpy(dev
->name
, d
->devname
);
3859 static int store_super_ddf(struct supertype
*st
, int fd
)
3861 struct ddf_super
*ddf
= st
->sb
;
3862 unsigned long long dsize
;
3869 if (!get_dev_size(fd
, NULL
, &dsize
))
3872 if (ddf
->dlist
|| ddf
->conflist
) {
3877 if (fstat(fd
, &sta
) == -1 || !S_ISBLK(sta
.st_mode
)) {
3878 pr_err("%s: file descriptor for invalid device\n",
3882 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
3883 if (dl
->major
== (int)major(sta
.st_rdev
) &&
3884 dl
->minor
== (int)minor(sta
.st_rdev
))
3887 pr_err("%s: couldn't find disk %d/%d\n", __func__
,
3888 (int)major(sta
.st_rdev
),
3889 (int)minor(sta
.st_rdev
));
3894 ret
= (_write_super_to_disk(ddf
, dl
) != 1);
3899 if (posix_memalign(&buf
, 512, 512) != 0)
3901 memset(buf
, 0, 512);
3903 lseek64(fd
, dsize
-512, 0);
3904 rc
= write(fd
, buf
, 512);
3911 static int compare_super_ddf(struct supertype
*st
, struct supertype
*tst
)
3915 * 0 same, or first was empty, and second was copied
3916 * 1 second had wrong number
3918 * 3 wrong other info
3920 struct ddf_super
*first
= st
->sb
;
3921 struct ddf_super
*second
= tst
->sb
;
3922 struct dl
*dl1
, *dl2
;
3923 struct vcl
*vl1
, *vl2
;
3924 unsigned int max_vds
, max_pds
, pd
, vd
;
3932 if (memcmp(first
->anchor
.guid
, second
->anchor
.guid
, DDF_GUID_LEN
) != 0)
3935 if (first
->max_part
!= second
->max_part
||
3936 !be16_eq(first
->phys
->used_pdes
, second
->phys
->used_pdes
) ||
3937 !be16_eq(first
->virt
->populated_vdes
,
3938 second
->virt
->populated_vdes
)) {
3939 dprintf("%s: PD/VD number mismatch\n", __func__
);
3943 max_pds
= be16_to_cpu(first
->phys
->used_pdes
);
3944 for (dl2
= second
->dlist
; dl2
; dl2
= dl2
->next
) {
3945 for (pd
= 0; pd
< max_pds
; pd
++)
3946 if (be32_eq(first
->phys
->entries
[pd
].refnum
,
3949 if (pd
== max_pds
) {
3950 dprintf("%s: no match for disk %08x\n", __func__
,
3951 be32_to_cpu(dl2
->disk
.refnum
));
3956 max_vds
= be16_to_cpu(first
->active
->max_vd_entries
);
3957 for (vl2
= second
->conflist
; vl2
; vl2
= vl2
->next
) {
3958 if (!be32_eq(vl2
->conf
.magic
, DDF_VD_CONF_MAGIC
))
3960 for (vd
= 0; vd
< max_vds
; vd
++)
3961 if (!memcmp(first
->virt
->entries
[vd
].guid
,
3962 vl2
->conf
.guid
, DDF_GUID_LEN
))
3964 if (vd
== max_vds
) {
3965 dprintf("%s: no match for VD config\n", __func__
);
3969 /* FIXME should I look at anything else? */
3972 At this point we are fairly sure that the meta data matches.
3973 But the new disk may contain additional local data.
3974 Add it to the super block.
3976 for (vl2
= second
->conflist
; vl2
; vl2
= vl2
->next
) {
3977 for (vl1
= first
->conflist
; vl1
; vl1
= vl1
->next
)
3978 if (!memcmp(vl1
->conf
.guid
, vl2
->conf
.guid
,
3982 if (vl1
->other_bvds
!= NULL
&&
3983 vl1
->conf
.sec_elmnt_seq
!=
3984 vl2
->conf
.sec_elmnt_seq
) {
3985 dprintf("%s: adding BVD %u\n", __func__
,
3986 vl2
->conf
.sec_elmnt_seq
);
3987 add_other_bvd(vl1
, &vl2
->conf
,
3988 first
->conf_rec_len
*512);
3993 if (posix_memalign((void **)&vl1
, 512,
3994 (first
->conf_rec_len
*512 +
3995 offsetof(struct vcl
, conf
))) != 0) {
3996 pr_err("%s could not allocate vcl buf\n",
4001 vl1
->next
= first
->conflist
;
4002 vl1
->block_sizes
= NULL
;
4003 memcpy(&vl1
->conf
, &vl2
->conf
, first
->conf_rec_len
*512);
4004 if (alloc_other_bvds(first
, vl1
) != 0) {
4005 pr_err("%s could not allocate other bvds\n",
4010 for (vd
= 0; vd
< max_vds
; vd
++)
4011 if (!memcmp(first
->virt
->entries
[vd
].guid
,
4012 vl1
->conf
.guid
, DDF_GUID_LEN
))
4015 dprintf("%s: added config for VD %u\n", __func__
, vl1
->vcnum
);
4016 first
->conflist
= vl1
;
4019 for (dl2
= second
->dlist
; dl2
; dl2
= dl2
->next
) {
4020 for (dl1
= first
->dlist
; dl1
; dl1
= dl1
->next
)
4021 if (be32_eq(dl1
->disk
.refnum
, dl2
->disk
.refnum
))
4026 if (posix_memalign((void **)&dl1
, 512,
4027 sizeof(*dl1
) + (first
->max_part
) * sizeof(dl1
->vlist
[0]))
4029 pr_err("%s could not allocate disk info buffer\n",
4033 memcpy(dl1
, dl2
, sizeof(*dl1
));
4034 dl1
->mdupdate
= NULL
;
4035 dl1
->next
= first
->dlist
;
4037 for (pd
= 0; pd
< max_pds
; pd
++)
4038 if (be32_eq(first
->phys
->entries
[pd
].refnum
,
4043 if (posix_memalign((void **)&dl1
->spare
, 512,
4044 first
->conf_rec_len
*512) != 0) {
4045 pr_err("%s could not allocate spare info buf\n",
4049 memcpy(dl1
->spare
, dl2
->spare
, first
->conf_rec_len
*512);
4051 for (vd
= 0 ; vd
< first
->max_part
; vd
++) {
4052 if (!dl2
->vlist
[vd
]) {
4053 dl1
->vlist
[vd
] = NULL
;
4056 for (vl1
= first
->conflist
; vl1
; vl1
= vl1
->next
) {
4057 if (!memcmp(vl1
->conf
.guid
,
4058 dl2
->vlist
[vd
]->conf
.guid
,
4061 dl1
->vlist
[vd
] = vl1
;
4065 dprintf("%s: added disk %d: %08x\n", __func__
, dl1
->pdnum
,
4066 be32_to_cpu(dl1
->disk
.refnum
));
4074 * A new array 'a' has been started which claims to be instance 'inst'
4075 * within container 'c'.
4076 * We need to confirm that the array matches the metadata in 'c' so
4077 * that we don't corrupt any metadata.
4079 static int ddf_open_new(struct supertype
*c
, struct active_array
*a
, char *inst
)
4081 struct ddf_super
*ddf
= c
->sb
;
4085 static const char faulty
[] = "faulty";
4087 if (all_ff(ddf
->virt
->entries
[n
].guid
)) {
4088 pr_err("%s: subarray %d doesn't exist\n", __func__
, n
);
4091 dprintf("%s: new subarray %d, GUID: %s\n", __func__
, n
,
4092 guid_str(ddf
->virt
->entries
[n
].guid
));
4093 for (dev
= a
->info
.devs
; dev
; dev
= dev
->next
) {
4094 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
4095 if (dl
->major
== dev
->disk
.major
&&
4096 dl
->minor
== dev
->disk
.minor
)
4099 pr_err("%s: device %d/%d of subarray %d not found in meta data\n",
4100 __func__
, dev
->disk
.major
, dev
->disk
.minor
, n
);
4103 if ((be16_to_cpu(ddf
->phys
->entries
[dl
->pdnum
].state
) &
4104 (DDF_Online
|DDF_Missing
|DDF_Failed
)) != DDF_Online
) {
4105 pr_err("%s: new subarray %d contains broken device %d/%d (%02x)\n",
4106 __func__
, n
, dl
->major
, dl
->minor
,
4108 ddf
->phys
->entries
[dl
->pdnum
].state
));
4109 if (write(dev
->state_fd
, faulty
, sizeof(faulty
)-1) !=
4111 pr_err("Write to state_fd failed\n");
4112 dev
->curr_state
= DS_FAULTY
;
4115 a
->info
.container_member
= n
;
4119 static void handle_missing(struct ddf_super
*ddf
, int inst
)
4121 /* This member array is being activated. If any devices
4122 * are missing they must now be marked as failed.
4124 struct vd_config
*vc
;
4130 for (n
= 0; ; n
++) {
4131 vc
= find_vdcr(ddf
, inst
, n
, &n_bvd
, &vcl
);
4134 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
4135 if (be32_eq(dl
->disk
.refnum
, vc
->phys_refnum
[n_bvd
]))
4138 /* Found this disk, so not missing */
4140 vc
->phys_refnum
[n_bvd
] = cpu_to_be32(0);
4145 * The array 'a' is to be marked clean in the metadata.
4146 * If '->resync_start' is not ~(unsigned long long)0, then the array is only
4147 * clean up to the point (in sectors). If that cannot be recorded in the
4148 * metadata, then leave it as dirty.
4150 * For DDF, we need to clear the DDF_state_inconsistent bit in the
4151 * !global! virtual_disk.virtual_entry structure.
4153 static int ddf_set_array_state(struct active_array
*a
, int consistent
)
4155 struct ddf_super
*ddf
= a
->container
->sb
;
4156 int inst
= a
->info
.container_member
;
4157 int old
= ddf
->virt
->entries
[inst
].state
;
4158 if (consistent
== 2) {
4159 handle_missing(ddf
, inst
);
4160 /* Should check if a recovery should be started FIXME */
4162 if (!is_resync_complete(&a
->info
))
4166 ddf
->virt
->entries
[inst
].state
&= ~DDF_state_inconsistent
;
4168 ddf
->virt
->entries
[inst
].state
|= DDF_state_inconsistent
;
4169 if (old
!= ddf
->virt
->entries
[inst
].state
)
4170 ddf_set_updates_pending(ddf
);
4172 old
= ddf
->virt
->entries
[inst
].init_state
;
4173 ddf
->virt
->entries
[inst
].init_state
&= ~DDF_initstate_mask
;
4174 if (is_resync_complete(&a
->info
))
4175 ddf
->virt
->entries
[inst
].init_state
|= DDF_init_full
;
4176 else if (a
->info
.resync_start
== 0)
4177 ddf
->virt
->entries
[inst
].init_state
|= DDF_init_not
;
4179 ddf
->virt
->entries
[inst
].init_state
|= DDF_init_quick
;
4180 if (old
!= ddf
->virt
->entries
[inst
].init_state
)
4181 ddf_set_updates_pending(ddf
);
4183 dprintf("ddf mark %d/%s (%d) %s %llu\n", inst
,
4184 guid_str(ddf
->virt
->entries
[inst
].guid
), a
->curr_state
,
4185 consistent
?"clean":"dirty",
4186 a
->info
.resync_start
);
4190 static int get_bvd_state(const struct ddf_super
*ddf
,
4191 const struct vd_config
*vc
)
4193 unsigned int i
, n_bvd
, working
= 0;
4194 unsigned int n_prim
= be16_to_cpu(vc
->prim_elmnt_count
);
4196 for (i
= 0; i
< n_prim
; i
++) {
4197 if (!find_index_in_bvd(ddf
, vc
, i
, &n_bvd
))
4199 pd
= find_phys(ddf
, vc
->phys_refnum
[n_bvd
]);
4202 st
= be16_to_cpu(ddf
->phys
->entries
[pd
].state
);
4203 if ((st
& (DDF_Online
|DDF_Failed
|DDF_Rebuilding
))
4208 state
= DDF_state_degraded
;
4209 if (working
== n_prim
)
4210 state
= DDF_state_optimal
;
4216 state
= DDF_state_failed
;
4220 state
= DDF_state_failed
;
4221 else if (working
>= 2)
4222 state
= DDF_state_part_optimal
;
4226 if (working
< n_prim
- 1)
4227 state
= DDF_state_failed
;
4230 if (working
< n_prim
- 2)
4231 state
= DDF_state_failed
;
4232 else if (working
== n_prim
- 1)
4233 state
= DDF_state_part_optimal
;
4239 static int secondary_state(int state
, int other
, int seclevel
)
4241 if (state
== DDF_state_optimal
&& other
== DDF_state_optimal
)
4242 return DDF_state_optimal
;
4243 if (seclevel
== DDF_2MIRRORED
) {
4244 if (state
== DDF_state_optimal
|| other
== DDF_state_optimal
)
4245 return DDF_state_part_optimal
;
4246 if (state
== DDF_state_failed
&& other
== DDF_state_failed
)
4247 return DDF_state_failed
;
4248 return DDF_state_degraded
;
4250 if (state
== DDF_state_failed
|| other
== DDF_state_failed
)
4251 return DDF_state_failed
;
4252 if (state
== DDF_state_degraded
|| other
== DDF_state_degraded
)
4253 return DDF_state_degraded
;
4254 return DDF_state_part_optimal
;
4258 static int get_svd_state(const struct ddf_super
*ddf
, const struct vcl
*vcl
)
4260 int state
= get_bvd_state(ddf
, &vcl
->conf
);
4262 for (i
= 1; i
< vcl
->conf
.sec_elmnt_count
; i
++) {
4263 state
= secondary_state(
4265 get_bvd_state(ddf
, vcl
->other_bvds
[i
-1]),
4272 * The state of each disk is stored in the global phys_disk structure
4273 * in phys_disk.entries[n].state.
4274 * This makes various combinations awkward.
4275 * - When a device fails in any array, it must be failed in all arrays
4276 * that include a part of this device.
4277 * - When a component is rebuilding, we cannot include it officially in the
4278 * array unless this is the only array that uses the device.
4280 * So: when transitioning:
4281 * Online -> failed, just set failed flag. monitor will propagate
4282 * spare -> online, the device might need to be added to the array.
4283 * spare -> failed, just set failed. Don't worry if in array or not.
4285 static void ddf_set_disk(struct active_array
*a
, int n
, int state
)
4287 struct ddf_super
*ddf
= a
->container
->sb
;
4288 unsigned int inst
= a
->info
.container_member
, n_bvd
;
4290 struct vd_config
*vc
= find_vdcr(ddf
, inst
, (unsigned int)n
,
4296 dprintf("%s: %d to %x\n", __func__
, n
, state
);
4298 dprintf("ddf: cannot find instance %d!!\n", inst
);
4301 /* Find the matching slot in 'info'. */
4302 for (mdi
= a
->info
.devs
; mdi
; mdi
= mdi
->next
)
4303 if (mdi
->disk
.raid_disk
== n
)
4306 pr_err("%s: cannot find raid disk %d\n",
4311 /* and find the 'dl' entry corresponding to that. */
4312 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
4313 if (mdi
->state_fd
>= 0 &&
4314 mdi
->disk
.major
== dl
->major
&&
4315 mdi
->disk
.minor
== dl
->minor
)
4318 pr_err("%s: cannot find raid disk %d (%d/%d)\n",
4320 mdi
->disk
.major
, mdi
->disk
.minor
);
4324 pd
= find_phys(ddf
, vc
->phys_refnum
[n_bvd
]);
4325 if (pd
< 0 || pd
!= dl
->pdnum
) {
4326 /* disk doesn't currently exist or has changed.
4327 * If it is now in_sync, insert it. */
4328 dprintf("%s: phys disk not found for %d: %d/%d ref %08x\n",
4329 __func__
, dl
->pdnum
, dl
->major
, dl
->minor
,
4330 be32_to_cpu(dl
->disk
.refnum
));
4331 dprintf("%s: array %u disk %u ref %08x pd %d\n",
4332 __func__
, inst
, n_bvd
,
4333 be32_to_cpu(vc
->phys_refnum
[n_bvd
]), pd
);
4334 if ((state
& DS_INSYNC
) && ! (state
& DS_FAULTY
)) {
4335 pd
= dl
->pdnum
; /* FIXME: is this really correct ? */
4336 vc
->phys_refnum
[n_bvd
] = dl
->disk
.refnum
;
4337 LBA_OFFSET(ddf
, vc
)[n_bvd
] =
4338 cpu_to_be64(mdi
->data_offset
);
4339 be16_clear(ddf
->phys
->entries
[pd
].type
,
4340 cpu_to_be16(DDF_Global_Spare
));
4341 be16_set(ddf
->phys
->entries
[pd
].type
,
4342 cpu_to_be16(DDF_Active_in_VD
));
4343 ddf_set_updates_pending(ddf
);
4346 be16 old
= ddf
->phys
->entries
[pd
].state
;
4347 if (state
& DS_FAULTY
)
4348 be16_set(ddf
->phys
->entries
[pd
].state
,
4349 cpu_to_be16(DDF_Failed
));
4350 if (state
& DS_INSYNC
) {
4351 be16_set(ddf
->phys
->entries
[pd
].state
,
4352 cpu_to_be16(DDF_Online
));
4353 be16_clear(ddf
->phys
->entries
[pd
].state
,
4354 cpu_to_be16(DDF_Rebuilding
));
4356 if (!be16_eq(old
, ddf
->phys
->entries
[pd
].state
))
4357 ddf_set_updates_pending(ddf
);
4360 dprintf("ddf: set_disk %d (%08x) to %x->%02x\n", n
,
4361 be32_to_cpu(dl
->disk
.refnum
), state
,
4362 be16_to_cpu(ddf
->phys
->entries
[pd
].state
));
4364 /* Now we need to check the state of the array and update
4365 * virtual_disk.entries[n].state.
4366 * It needs to be one of "optimal", "degraded", "failed".
4367 * I don't understand 'deleted' or 'missing'.
4369 state
= get_svd_state(ddf
, vcl
);
4371 if (ddf
->virt
->entries
[inst
].state
!=
4372 ((ddf
->virt
->entries
[inst
].state
& ~DDF_state_mask
)
4375 ddf
->virt
->entries
[inst
].state
=
4376 (ddf
->virt
->entries
[inst
].state
& ~DDF_state_mask
)
4378 ddf_set_updates_pending(ddf
);
4383 static void ddf_sync_metadata(struct supertype
*st
)
4387 * Write all data to all devices.
4388 * Later, we might be able to track whether only local changes
4389 * have been made, or whether any global data has been changed,
4390 * but ddf is sufficiently weird that it probably always
4391 * changes global data ....
4393 struct ddf_super
*ddf
= st
->sb
;
4394 if (!ddf
->updates_pending
)
4396 ddf
->updates_pending
= 0;
4397 __write_init_super_ddf(st
);
4398 dprintf("ddf: sync_metadata\n");
4401 static int del_from_conflist(struct vcl
**list
, const char *guid
)
4405 for (p
= list
; p
&& *p
; p
= &((*p
)->next
))
4406 if (!memcmp((*p
)->conf
.guid
, guid
, DDF_GUID_LEN
)) {
4413 static int _kill_subarray_ddf(struct ddf_super
*ddf
, const char *guid
)
4416 unsigned int vdnum
, i
;
4417 vdnum
= find_vde_by_guid(ddf
, guid
);
4418 if (vdnum
== DDF_NOTFOUND
) {
4419 pr_err("%s: could not find VD %s\n", __func__
,
4423 if (del_from_conflist(&ddf
->conflist
, guid
) == 0) {
4424 pr_err("%s: could not find conf %s\n", __func__
,
4428 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
4429 for (i
= 0; i
< ddf
->max_part
; i
++)
4430 if (dl
->vlist
[i
] != NULL
&&
4431 !memcmp(dl
->vlist
[i
]->conf
.guid
, guid
,
4433 dl
->vlist
[i
] = NULL
;
4434 memset(ddf
->virt
->entries
[vdnum
].guid
, 0xff, DDF_GUID_LEN
);
4435 dprintf("%s: deleted %s\n", __func__
, guid_str(guid
));
4439 static int kill_subarray_ddf(struct supertype
*st
)
4441 struct ddf_super
*ddf
= st
->sb
;
4443 * currentconf is set in container_content_ddf,
4444 * called with subarray arg
4446 struct vcl
*victim
= ddf
->currentconf
;
4447 struct vd_config
*conf
;
4448 ddf
->currentconf
= NULL
;
4451 pr_err("%s: nothing to kill\n", __func__
);
4454 conf
= &victim
->conf
;
4455 vdnum
= find_vde_by_guid(ddf
, conf
->guid
);
4456 if (vdnum
== DDF_NOTFOUND
) {
4457 pr_err("%s: could not find VD %s\n", __func__
,
4458 guid_str(conf
->guid
));
4461 if (st
->update_tail
) {
4462 struct virtual_disk
*vd
;
4463 int len
= sizeof(struct virtual_disk
)
4464 + sizeof(struct virtual_entry
);
4467 pr_err("%s: failed to allocate %d bytes\n", __func__
,
4471 memset(vd
, 0 , len
);
4472 vd
->magic
= DDF_VIRT_RECORDS_MAGIC
;
4473 vd
->populated_vdes
= cpu_to_be16(0);
4474 memcpy(vd
->entries
[0].guid
, conf
->guid
, DDF_GUID_LEN
);
4475 /* we use DDF_state_deleted as marker */
4476 vd
->entries
[0].state
= DDF_state_deleted
;
4477 append_metadata_update(st
, vd
, len
);
4479 _kill_subarray_ddf(ddf
, conf
->guid
);
4480 ddf_set_updates_pending(ddf
);
4481 ddf_sync_metadata(st
);
4486 static void copy_matching_bvd(struct ddf_super
*ddf
,
4487 struct vd_config
*conf
,
4488 const struct metadata_update
*update
)
4491 be16_to_cpu(ddf
->anchor
.max_primary_element_entries
);
4492 unsigned int len
= ddf
->conf_rec_len
* 512;
4494 struct vd_config
*vc
;
4495 for (p
= update
->buf
; p
< update
->buf
+ update
->len
; p
+= len
) {
4496 vc
= (struct vd_config
*) p
;
4497 if (vc
->sec_elmnt_seq
== conf
->sec_elmnt_seq
) {
4498 memcpy(conf
->phys_refnum
, vc
->phys_refnum
,
4499 mppe
* (sizeof(__u32
) + sizeof(__u64
)));
4503 pr_err("%s: no match for BVD %d of %s in update\n", __func__
,
4504 conf
->sec_elmnt_seq
, guid_str(conf
->guid
));
4507 static void ddf_process_update(struct supertype
*st
,
4508 struct metadata_update
*update
)
4510 /* Apply this update to the metadata.
4511 * The first 4 bytes are a DDF_*_MAGIC which guides
4513 * Possible update are:
4514 * DDF_PHYS_RECORDS_MAGIC
4515 * Add a new physical device or remove an old one.
4516 * Changes to this record only happen implicitly.
4517 * used_pdes is the device number.
4518 * DDF_VIRT_RECORDS_MAGIC
4519 * Add a new VD. Possibly also change the 'access' bits.
4520 * populated_vdes is the entry number.
4522 * New or updated VD. the VIRT_RECORD must already
4523 * exist. For an update, phys_refnum and lba_offset
4524 * (at least) are updated, and the VD_CONF must
4525 * be written to precisely those devices listed with
4527 * DDF_SPARE_ASSIGN_MAGIC
4528 * replacement Spare Assignment Record... but for which device?
4531 * - to create a new array, we send a VIRT_RECORD and
4532 * a VD_CONF. Then assemble and start the array.
4533 * - to activate a spare we send a VD_CONF to add the phys_refnum
4534 * and offset. This will also mark the spare as active with
4535 * a spare-assignment record.
4537 struct ddf_super
*ddf
= st
->sb
;
4538 be32
*magic
= (be32
*)update
->buf
;
4539 struct phys_disk
*pd
;
4540 struct virtual_disk
*vd
;
4541 struct vd_config
*vc
;
4545 unsigned int pdnum
, pd2
, len
;
4547 dprintf("Process update %x\n", be32_to_cpu(*magic
));
4549 if (be32_eq(*magic
, DDF_PHYS_RECORDS_MAGIC
)) {
4551 if (update
->len
!= (sizeof(struct phys_disk
) +
4552 sizeof(struct phys_disk_entry
)))
4554 pd
= (struct phys_disk
*)update
->buf
;
4556 ent
= be16_to_cpu(pd
->used_pdes
);
4557 if (ent
>= be16_to_cpu(ddf
->phys
->max_pdes
))
4559 if (be16_and(pd
->entries
[0].state
, cpu_to_be16(DDF_Missing
))) {
4561 /* removing this disk. */
4562 be16_set(ddf
->phys
->entries
[ent
].state
,
4563 cpu_to_be16(DDF_Missing
));
4564 for (dlp
= &ddf
->dlist
; *dlp
; dlp
= &(*dlp
)->next
) {
4565 struct dl
*dl
= *dlp
;
4566 if (dl
->pdnum
== (signed)ent
) {
4569 /* FIXME this doesn't free
4576 ddf_set_updates_pending(ddf
);
4579 if (!all_ff(ddf
->phys
->entries
[ent
].guid
))
4581 ddf
->phys
->entries
[ent
] = pd
->entries
[0];
4582 ddf
->phys
->used_pdes
= cpu_to_be16
4583 (1 + be16_to_cpu(ddf
->phys
->used_pdes
));
4584 ddf_set_updates_pending(ddf
);
4585 if (ddf
->add_list
) {
4586 struct active_array
*a
;
4587 struct dl
*al
= ddf
->add_list
;
4588 ddf
->add_list
= al
->next
;
4590 al
->next
= ddf
->dlist
;
4593 /* As a device has been added, we should check
4594 * for any degraded devices that might make
4595 * use of this spare */
4596 for (a
= st
->arrays
; a
; a
=a
->next
)
4597 a
->check_degraded
= 1;
4599 } else if (be32_eq(*magic
, DDF_VIRT_RECORDS_MAGIC
)) {
4601 if (update
->len
!= (sizeof(struct virtual_disk
) +
4602 sizeof(struct virtual_entry
)))
4604 vd
= (struct virtual_disk
*)update
->buf
;
4606 if (vd
->entries
[0].state
== DDF_state_deleted
) {
4607 if (_kill_subarray_ddf(ddf
, vd
->entries
[0].guid
))
4611 ent
= find_vde_by_guid(ddf
, vd
->entries
[0].guid
);
4612 if (ent
!= DDF_NOTFOUND
) {
4613 dprintf("%s: VD %s exists already in slot %d\n",
4614 __func__
, guid_str(vd
->entries
[0].guid
),
4618 ent
= find_unused_vde(ddf
);
4619 if (ent
== DDF_NOTFOUND
)
4621 ddf
->virt
->entries
[ent
] = vd
->entries
[0];
4622 ddf
->virt
->populated_vdes
=
4625 ddf
->virt
->populated_vdes
));
4626 dprintf("%s: added VD %s in slot %d(s=%02x i=%02x)\n",
4627 __func__
, guid_str(vd
->entries
[0].guid
), ent
,
4628 ddf
->virt
->entries
[ent
].state
,
4629 ddf
->virt
->entries
[ent
].init_state
);
4631 ddf_set_updates_pending(ddf
);
4634 else if (be32_eq(*magic
, DDF_VD_CONF_MAGIC
)) {
4635 vc
= (struct vd_config
*)update
->buf
;
4636 len
= ddf
->conf_rec_len
* 512;
4637 if ((unsigned int)update
->len
!= len
* vc
->sec_elmnt_count
) {
4638 pr_err("%s: %s: insufficient data (%d) for %u BVDs\n",
4639 __func__
, guid_str(vc
->guid
), update
->len
,
4640 vc
->sec_elmnt_count
);
4643 for (vcl
= ddf
->conflist
; vcl
; vcl
= vcl
->next
)
4644 if (memcmp(vcl
->conf
.guid
, vc
->guid
, DDF_GUID_LEN
) == 0)
4646 dprintf("%s: conf update for %s (%s)\n", __func__
,
4647 guid_str(vc
->guid
), (vcl
? "old" : "new"));
4649 /* An update, just copy the phys_refnum and lba_offset
4654 copy_matching_bvd(ddf
, &vcl
->conf
, update
);
4655 for (k
= 0; k
< be16_to_cpu(vc
->prim_elmnt_count
); k
++)
4656 dprintf("BVD %u has %08x at %llu\n", 0,
4657 be32_to_cpu(vcl
->conf
.phys_refnum
[k
]),
4658 be64_to_cpu(LBA_OFFSET(ddf
,
4660 for (i
= 1; i
< vc
->sec_elmnt_count
; i
++) {
4661 copy_matching_bvd(ddf
, vcl
->other_bvds
[i
-1],
4663 for (k
= 0; k
< be16_to_cpu(
4664 vc
->prim_elmnt_count
); k
++)
4665 dprintf("BVD %u has %08x at %llu\n", i
,
4667 (vcl
->other_bvds
[i
-1]->
4672 vcl
->other_bvds
[i
-1])[k
]));
4679 vcl
= update
->space
;
4680 update
->space
= NULL
;
4681 vcl
->next
= ddf
->conflist
;
4682 memcpy(&vcl
->conf
, vc
, len
);
4683 ent
= find_vde_by_guid(ddf
, vc
->guid
);
4684 if (ent
== DDF_NOTFOUND
)
4687 ddf
->conflist
= vcl
;
4688 for (i
= 1; i
< vc
->sec_elmnt_count
; i
++)
4689 memcpy(vcl
->other_bvds
[i
-1],
4690 update
->buf
+ len
* i
, len
);
4692 /* Set DDF_Transition on all Failed devices - to help
4693 * us detect those that are no longer in use
4695 for (pdnum
= 0; pdnum
< be16_to_cpu(ddf
->phys
->used_pdes
);
4697 if (be16_and(ddf
->phys
->entries
[pdnum
].state
,
4698 cpu_to_be16(DDF_Failed
)))
4699 be16_set(ddf
->phys
->entries
[pdnum
].state
,
4700 cpu_to_be16(DDF_Transition
));
4701 /* Now make sure vlist is correct for each dl. */
4702 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
) {
4703 unsigned int vn
= 0;
4704 int in_degraded
= 0;
4705 for (vcl
= ddf
->conflist
; vcl
; vcl
= vcl
->next
) {
4706 unsigned int dn
, ibvd
;
4707 const struct vd_config
*conf
;
4709 dn
= get_pd_index_from_refnum(vcl
,
4713 if (dn
== DDF_NOTFOUND
)
4715 dprintf("dev %d/%08x has %s (sec=%u) at %d\n",
4717 be32_to_cpu(dl
->disk
.refnum
),
4718 guid_str(conf
->guid
),
4719 conf
->sec_elmnt_seq
, vn
);
4720 /* Clear the Transition flag */
4722 (ddf
->phys
->entries
[dl
->pdnum
].state
,
4723 cpu_to_be16(DDF_Failed
)))
4724 be16_clear(ddf
->phys
4725 ->entries
[dl
->pdnum
].state
,
4726 cpu_to_be16(DDF_Transition
));
4727 dl
->vlist
[vn
++] = vcl
;
4728 vstate
= ddf
->virt
->entries
[vcl
->vcnum
].state
4730 if (vstate
== DDF_state_degraded
||
4731 vstate
== DDF_state_part_optimal
)
4734 while (vn
< ddf
->max_part
)
4735 dl
->vlist
[vn
++] = NULL
;
4737 be16_clear(ddf
->phys
->entries
[dl
->pdnum
].type
,
4738 cpu_to_be16(DDF_Global_Spare
));
4739 if (!be16_and(ddf
->phys
4740 ->entries
[dl
->pdnum
].type
,
4741 cpu_to_be16(DDF_Active_in_VD
))) {
4743 ->entries
[dl
->pdnum
].type
,
4744 cpu_to_be16(DDF_Active_in_VD
));
4747 ->entries
[dl
->pdnum
]
4754 be16_clear(ddf
->phys
->entries
[dl
->pdnum
].type
,
4755 cpu_to_be16(DDF_Global_Spare
));
4756 be16_set(ddf
->phys
->entries
[dl
->pdnum
].type
,
4757 cpu_to_be16(DDF_Spare
));
4759 if (!dl
->vlist
[0] && !dl
->spare
) {
4760 be16_set(ddf
->phys
->entries
[dl
->pdnum
].type
,
4761 cpu_to_be16(DDF_Global_Spare
));
4762 be16_clear(ddf
->phys
->entries
[dl
->pdnum
].type
,
4763 cpu_to_be16(DDF_Spare
));
4764 be16_clear(ddf
->phys
->entries
[dl
->pdnum
].type
,
4765 cpu_to_be16(DDF_Active_in_VD
));
4769 /* Now remove any 'Failed' devices that are not part
4770 * of any VD. They will have the Transition flag set.
4771 * Once done, we need to update all dl->pdnum numbers.
4774 for (pdnum
= 0; pdnum
< be16_to_cpu(ddf
->phys
->used_pdes
);
4776 if (be16_and(ddf
->phys
->entries
[pdnum
].state
,
4777 cpu_to_be16(DDF_Failed
))
4778 && be16_and(ddf
->phys
->entries
[pdnum
].state
,
4779 cpu_to_be16(DDF_Transition
))) {
4780 /* skip this one unless in dlist*/
4781 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
4782 if (dl
->pdnum
== (int)pdnum
)
4790 ddf
->phys
->entries
[pd2
] =
4791 ddf
->phys
->entries
[pdnum
];
4792 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
4793 if (dl
->pdnum
== (int)pdnum
)
4798 ddf
->phys
->used_pdes
= cpu_to_be16(pd2
);
4799 while (pd2
< pdnum
) {
4800 memset(ddf
->phys
->entries
[pd2
].guid
, 0xff,
4805 ddf_set_updates_pending(ddf
);
4807 /* case DDF_SPARE_ASSIGN_MAGIC */
4810 static void ddf_prepare_update(struct supertype
*st
,
4811 struct metadata_update
*update
)
4813 /* This update arrived at managemon.
4814 * We are about to pass it to monitor.
4815 * If a malloc is needed, do it here.
4817 struct ddf_super
*ddf
= st
->sb
;
4818 be32
*magic
= (be32
*)update
->buf
;
4819 if (be32_eq(*magic
, DDF_VD_CONF_MAGIC
)) {
4821 struct vd_config
*conf
= (struct vd_config
*) update
->buf
;
4822 if (posix_memalign(&update
->space
, 512,
4823 offsetof(struct vcl
, conf
)
4824 + ddf
->conf_rec_len
* 512) != 0) {
4825 update
->space
= NULL
;
4828 vcl
= update
->space
;
4829 vcl
->conf
.sec_elmnt_count
= conf
->sec_elmnt_count
;
4830 if (alloc_other_bvds(ddf
, vcl
) != 0) {
4831 free(update
->space
);
4832 update
->space
= NULL
;
4838 * Check degraded state of a RAID10.
4839 * returns 2 for good, 1 for degraded, 0 for failed, and -1 for error
4841 static int raid10_degraded(struct mdinfo
*info
)
4849 n_prim
= info
->array
.layout
& ~0x100;
4850 n_bvds
= info
->array
.raid_disks
/ n_prim
;
4851 found
= xmalloc(n_bvds
);
4854 memset(found
, 0, n_bvds
);
4855 for (d
= info
->devs
; d
; d
= d
->next
) {
4856 i
= d
->disk
.raid_disk
/ n_prim
;
4858 pr_err("%s: BUG: invalid raid disk\n", __func__
);
4861 if (d
->state_fd
> 0)
4865 for (i
= 0; i
< n_bvds
; i
++)
4867 dprintf("%s: BVD %d/%d failed\n", __func__
, i
, n_bvds
);
4870 } else if (found
[i
] < n_prim
) {
4871 dprintf("%s: BVD %d/%d degraded\n", __func__
, i
,
4881 * Check if the array 'a' is degraded but not failed.
4882 * If it is, find as many spares as are available and needed and
4883 * arrange for their inclusion.
4884 * We only choose devices which are not already in the array,
4885 * and prefer those with a spare-assignment to this array.
4886 * otherwise we choose global spares - assuming always that
4887 * there is enough room.
4888 * For each spare that we assign, we return an 'mdinfo' which
4889 * describes the position for the device in the array.
4890 * We also add to 'updates' a DDF_VD_CONF_MAGIC update with
4891 * the new phys_refnum and lba_offset values.
4893 * Only worry about BVDs at the moment.
4895 static struct mdinfo
*ddf_activate_spare(struct active_array
*a
,
4896 struct metadata_update
**updates
)
4900 struct ddf_super
*ddf
= a
->container
->sb
;
4902 struct mdinfo
*rv
= NULL
;
4904 struct metadata_update
*mu
;
4909 struct vd_config
*vc
;
4912 for (d
= a
->info
.devs
; d
; d
= d
->next
) {
4913 if ((d
->curr_state
& DS_FAULTY
) &&
4915 /* wait for Removal to happen */
4917 if (d
->state_fd
>= 0)
4921 dprintf("%s: working=%d (%d) level=%d\n", __func__
, working
,
4922 a
->info
.array
.raid_disks
,
4923 a
->info
.array
.level
);
4924 if (working
== a
->info
.array
.raid_disks
)
4925 return NULL
; /* array not degraded */
4926 switch (a
->info
.array
.level
) {
4929 return NULL
; /* failed */
4933 if (working
< a
->info
.array
.raid_disks
- 1)
4934 return NULL
; /* failed */
4937 if (working
< a
->info
.array
.raid_disks
- 2)
4938 return NULL
; /* failed */
4941 if (raid10_degraded(&a
->info
) < 1)
4944 default: /* concat or stripe */
4945 return NULL
; /* failed */
4948 /* For each slot, if it is not working, find a spare */
4950 for (i
= 0; i
< a
->info
.array
.raid_disks
; i
++) {
4951 for (d
= a
->info
.devs
; d
; d
= d
->next
)
4952 if (d
->disk
.raid_disk
== i
)
4954 dprintf("found %d: %p %x\n", i
, d
, d
?d
->curr_state
:0);
4955 if (d
&& (d
->state_fd
>= 0))
4958 /* OK, this device needs recovery. Find a spare */
4960 for ( ; dl
; dl
= dl
->next
) {
4961 unsigned long long esize
;
4962 unsigned long long pos
;
4965 int is_dedicated
= 0;
4968 be16 state
= ddf
->phys
->entries
[dl
->pdnum
].state
;
4970 cpu_to_be16(DDF_Failed
|DDF_Missing
)) ||
4972 cpu_to_be16(DDF_Online
)))
4975 /* If in this array, skip */
4976 for (d2
= a
->info
.devs
; d2
; d2
= d2
->next
)
4977 if (d2
->state_fd
>= 0 &&
4978 d2
->disk
.major
== dl
->major
&&
4979 d2
->disk
.minor
== dl
->minor
) {
4980 dprintf("%x:%x (%08x) already in array\n",
4981 dl
->major
, dl
->minor
,
4982 be32_to_cpu(dl
->disk
.refnum
));
4987 if (be16_and(ddf
->phys
->entries
[dl
->pdnum
].type
,
4988 cpu_to_be16(DDF_Spare
))) {
4989 /* Check spare assign record */
4991 if (dl
->spare
->type
& DDF_spare_dedicated
) {
4992 /* check spare_ents for guid */
4998 if (memcmp(dl
->spare
->spare_ents
[j
].guid
,
4999 ddf
->virt
->entries
[a
->info
.container_member
].guid
,
5006 } else if (be16_and(ddf
->phys
->entries
[dl
->pdnum
].type
,
5007 cpu_to_be16(DDF_Global_Spare
))) {
5009 } else if (!be16_and(ddf
->phys
5010 ->entries
[dl
->pdnum
].state
,
5011 cpu_to_be16(DDF_Failed
))) {
5012 /* we can possibly use some of this */
5015 if ( ! (is_dedicated
||
5016 (is_global
&& global_ok
))) {
5017 dprintf("%x:%x not suitable: %d %d\n", dl
->major
, dl
->minor
,
5018 is_dedicated
, is_global
);
5022 /* We are allowed to use this device - is there space?
5023 * We need a->info.component_size sectors */
5024 ex
= get_extents(ddf
, dl
);
5026 dprintf("cannot get extents\n");
5033 esize
= ex
[j
].start
- pos
;
5034 if (esize
>= a
->info
.component_size
)
5036 pos
= ex
[j
].start
+ ex
[j
].size
;
5038 } while (ex
[j
-1].size
);
5041 if (esize
< a
->info
.component_size
) {
5042 dprintf("%x:%x has no room: %llu %llu\n",
5043 dl
->major
, dl
->minor
,
5044 esize
, a
->info
.component_size
);
5049 /* Cool, we have a device with some space at pos */
5050 di
= xcalloc(1, sizeof(*di
));
5051 di
->disk
.number
= i
;
5052 di
->disk
.raid_disk
= i
;
5053 di
->disk
.major
= dl
->major
;
5054 di
->disk
.minor
= dl
->minor
;
5056 di
->recovery_start
= 0;
5057 di
->data_offset
= pos
;
5058 di
->component_size
= a
->info
.component_size
;
5059 di
->container_member
= dl
->pdnum
;
5062 dprintf("%x:%x (%08x) to be %d at %llu\n",
5063 dl
->major
, dl
->minor
,
5064 be32_to_cpu(dl
->disk
.refnum
), i
, pos
);
5068 if (!dl
&& ! global_ok
) {
5069 /* not enough dedicated spares, try global */
5077 /* No spares found */
5079 /* Now 'rv' has a list of devices to return.
5080 * Create a metadata_update record to update the
5081 * phys_refnum and lba_offset values
5083 vc
= find_vdcr(ddf
, a
->info
.container_member
, rv
->disk
.raid_disk
,
5088 mu
= xmalloc(sizeof(*mu
));
5089 if (posix_memalign(&mu
->space
, 512, sizeof(struct vcl
)) != 0) {
5094 mu
->len
= ddf
->conf_rec_len
* 512 * vcl
->conf
.sec_elmnt_count
;
5095 mu
->buf
= xmalloc(mu
->len
);
5097 mu
->space_list
= NULL
;
5098 mu
->next
= *updates
;
5099 memcpy(mu
->buf
, &vcl
->conf
, ddf
->conf_rec_len
* 512);
5100 for (j
= 1; j
< vcl
->conf
.sec_elmnt_count
; j
++)
5101 memcpy(mu
->buf
+ j
* ddf
->conf_rec_len
* 512,
5102 vcl
->other_bvds
[j
-1], ddf
->conf_rec_len
* 512);
5104 vc
= (struct vd_config
*)mu
->buf
;
5105 for (di
= rv
; di
; di
= di
->next
) {
5106 unsigned int i_sec
, i_prim
;
5107 i_sec
= di
->disk
.raid_disk
5108 / be16_to_cpu(vcl
->conf
.prim_elmnt_count
);
5109 i_prim
= di
->disk
.raid_disk
5110 % be16_to_cpu(vcl
->conf
.prim_elmnt_count
);
5111 vc
= (struct vd_config
*)(mu
->buf
5112 + i_sec
* ddf
->conf_rec_len
* 512);
5113 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
5114 if (dl
->major
== di
->disk
.major
5115 && dl
->minor
== di
->disk
.minor
)
5118 pr_err("%s: BUG: can't find disk %d (%d/%d)\n",
5119 __func__
, di
->disk
.raid_disk
,
5120 di
->disk
.major
, di
->disk
.minor
);
5123 vc
->phys_refnum
[i_prim
] = ddf
->phys
->entries
[dl
->pdnum
].refnum
;
5124 LBA_OFFSET(ddf
, vc
)[i_prim
] = cpu_to_be64(di
->data_offset
);
5125 dprintf("BVD %u gets %u: %08x at %llu\n", i_sec
, i_prim
,
5126 be32_to_cpu(vc
->phys_refnum
[i_prim
]),
5127 be64_to_cpu(LBA_OFFSET(ddf
, vc
)[i_prim
]));
5132 #endif /* MDASSEMBLE */
5134 static int ddf_level_to_layout(int level
)
5141 return ALGORITHM_LEFT_SYMMETRIC
;
5143 return ALGORITHM_ROTATING_N_CONTINUE
;
5151 static void default_geometry_ddf(struct supertype
*st
, int *level
, int *layout
, int *chunk
)
5153 if (level
&& *level
== UnSet
)
5154 *level
= LEVEL_CONTAINER
;
5156 if (level
&& layout
&& *layout
== UnSet
)
5157 *layout
= ddf_level_to_layout(*level
);
5160 struct superswitch super_ddf
= {
5162 .examine_super
= examine_super_ddf
,
5163 .brief_examine_super
= brief_examine_super_ddf
,
5164 .brief_examine_subarrays
= brief_examine_subarrays_ddf
,
5165 .export_examine_super
= export_examine_super_ddf
,
5166 .detail_super
= detail_super_ddf
,
5167 .brief_detail_super
= brief_detail_super_ddf
,
5168 .validate_geometry
= validate_geometry_ddf
,
5169 .write_init_super
= write_init_super_ddf
,
5170 .add_to_super
= add_to_super_ddf
,
5171 .remove_from_super
= remove_from_super_ddf
,
5172 .load_container
= load_container_ddf
,
5173 .copy_metadata
= copy_metadata_ddf
,
5174 .kill_subarray
= kill_subarray_ddf
,
5176 .match_home
= match_home_ddf
,
5177 .uuid_from_super
= uuid_from_super_ddf
,
5178 .getinfo_super
= getinfo_super_ddf
,
5179 .update_super
= update_super_ddf
,
5181 .avail_size
= avail_size_ddf
,
5183 .compare_super
= compare_super_ddf
,
5185 .load_super
= load_super_ddf
,
5186 .init_super
= init_super_ddf
,
5187 .store_super
= store_super_ddf
,
5188 .free_super
= free_super_ddf
,
5189 .match_metadata_desc
= match_metadata_desc_ddf
,
5190 .container_content
= container_content_ddf
,
5191 .default_geometry
= default_geometry_ddf
,
5197 .open_new
= ddf_open_new
,
5198 .set_array_state
= ddf_set_array_state
,
5199 .set_disk
= ddf_set_disk
,
5200 .sync_metadata
= ddf_sync_metadata
,
5201 .process_update
= ddf_process_update
,
5202 .prepare_update
= ddf_prepare_update
,
5203 .activate_spare
= ddf_activate_spare
,