2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2006-2014 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 taken 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 */
232 be16 used_pdes
; /* This is a counter, not a max - the list
233 * of used entries may not be dense */
236 struct phys_disk_entry
{
237 char guid
[DDF_GUID_LEN
];
241 be64 config_size
; /* DDF structures must be after here */
242 char path
[18]; /* Another horrible structure really
243 * but is "used for information
249 /* phys_disk_entry.type is a bitmap - bigendian remember */
250 #define DDF_Forced_PD_GUID 1
251 #define DDF_Active_in_VD 2
252 #define DDF_Global_Spare 4 /* VD_CONF records are ignored */
253 #define DDF_Spare 8 /* overrides Global_spare */
254 #define DDF_Foreign 16
255 #define DDF_Legacy 32 /* no DDF on this device */
257 #define DDF_Interface_mask 0xf00
258 #define DDF_Interface_SCSI 0x100
259 #define DDF_Interface_SAS 0x200
260 #define DDF_Interface_SATA 0x300
261 #define DDF_Interface_FC 0x400
263 /* phys_disk_entry.state is a bigendian bitmap */
265 #define DDF_Failed 2 /* overrides 1,4,8 */
266 #define DDF_Rebuilding 4
267 #define DDF_Transition 8
269 #define DDF_ReadErrors 32
270 #define DDF_Missing 64
272 /* The content of the virt_section global scope */
273 struct virtual_disk
{
274 be32 magic
; /* DDF_VIRT_RECORDS_MAGIC */
279 struct virtual_entry
{
280 char guid
[DDF_GUID_LEN
];
282 __u16 pad0
; /* 0xffff */
292 /* virtual_entry.type is a bitmap - bigendian */
294 #define DDF_Enforce_Groups 2
295 #define DDF_Unicode 4
296 #define DDF_Owner_Valid 8
298 /* virtual_entry.state is a bigendian bitmap */
299 #define DDF_state_mask 0x7
300 #define DDF_state_optimal 0x0
301 #define DDF_state_degraded 0x1
302 #define DDF_state_deleted 0x2
303 #define DDF_state_missing 0x3
304 #define DDF_state_failed 0x4
305 #define DDF_state_part_optimal 0x5
307 #define DDF_state_morphing 0x8
308 #define DDF_state_inconsistent 0x10
310 /* virtual_entry.init_state is a bigendian bitmap */
311 #define DDF_initstate_mask 0x03
312 #define DDF_init_not 0x00
313 #define DDF_init_quick 0x01 /* initialisation is progress.
314 * i.e. 'state_inconsistent' */
315 #define DDF_init_full 0x02
317 #define DDF_access_mask 0xc0
318 #define DDF_access_rw 0x00
319 #define DDF_access_ro 0x80
320 #define DDF_access_blocked 0xc0
322 /* The content of the config_section - local scope
323 * It has multiple records each config_record_len sectors
324 * They can be vd_config or spare_assign
328 be32 magic
; /* DDF_VD_CONF_MAGIC */
330 char guid
[DDF_GUID_LEN
];
334 be16 prim_elmnt_count
;
335 __u8 chunk_shift
; /* 0 == 512, 1==1024 etc */
338 __u8 sec_elmnt_count
;
341 be64 blocks
; /* blocks per component could be different
342 * on different component devices...(only
343 * for concat I hope) */
344 be64 array_blocks
; /* blocks in array */
346 be32 spare_refs
[8]; /* This is used to detect missing spares.
347 * As we don't have an interface for that
348 * the values are ignored.
355 __u8 v0
[32]; /* reserved- 0xff */
356 __u8 v1
[32]; /* reserved- 0xff */
357 __u8 v2
[16]; /* reserved- 0xff */
358 __u8 v3
[16]; /* reserved- 0xff */
360 be32 phys_refnum
[0]; /* refnum of each disk in sequence */
361 /*__u64 lba_offset[0]; LBA offset in each phys. Note extents in a
362 bvd are always the same size */
364 #define LBA_OFFSET(ddf, vd) ((be64 *) &(vd)->phys_refnum[(ddf)->mppe])
366 /* vd_config.cache_pol[7] is a bitmap */
367 #define DDF_cache_writeback 1 /* else writethrough */
368 #define DDF_cache_wadaptive 2 /* only applies if writeback */
369 #define DDF_cache_readahead 4
370 #define DDF_cache_radaptive 8 /* only if doing read-ahead */
371 #define DDF_cache_ifnobatt 16 /* even to write cache if battery is poor */
372 #define DDF_cache_wallowed 32 /* enable write caching */
373 #define DDF_cache_rallowed 64 /* enable read caching */
375 struct spare_assign
{
376 be32 magic
; /* DDF_SPARE_ASSIGN_MAGIC */
381 be16 populated
; /* SAEs used */
382 be16 max
; /* max SAEs */
384 struct spare_assign_entry
{
385 char guid
[DDF_GUID_LEN
];
386 be16 secondary_element
;
390 /* spare_assign.type is a bitmap */
391 #define DDF_spare_dedicated 0x1 /* else global */
392 #define DDF_spare_revertible 0x2 /* else committable */
393 #define DDF_spare_active 0x4 /* else not active */
394 #define DDF_spare_affinity 0x8 /* enclosure affinity */
396 /* The data_section contents - local scope */
398 be32 magic
; /* DDF_PHYS_DATA_MAGIC */
400 char guid
[DDF_GUID_LEN
];
401 be32 refnum
; /* crc of some magic drive data ... */
402 __u8 forced_ref
; /* set when above was not result of magic */
403 __u8 forced_guid
; /* set if guid was forced rather than magic */
408 /* bbm_section content */
409 struct bad_block_log
{
416 struct mapped_block
{
417 be64 defective_start
;
418 be32 replacement_start
;
424 /* Struct for internally holding ddf structures */
425 /* The DDF structure stored on each device is potentially
426 * quite different, as some data is global and some is local.
427 * The global data is:
430 * - Physical disk records
431 * - Virtual disk records
433 * - Configuration records
434 * - Physical Disk data section
435 * ( and Bad block and vendor which I don't care about yet).
437 * The local data is parsed into separate lists as it is read
438 * and reconstructed for writing. This means that we only need
439 * to make config changes once and they are automatically
440 * propagated to all devices.
441 * The global (config and disk data) records are each in a list
442 * of separate data structures. When writing we find the entry
443 * or entries applicable to the particular device.
446 struct ddf_header anchor
, primary
, secondary
;
447 struct ddf_controller_data controller
;
448 struct ddf_header
*active
;
449 struct phys_disk
*phys
;
450 struct virtual_disk
*virt
;
453 unsigned int max_part
, mppe
, conf_rec_len
;
461 unsigned int vcnum
; /* index into ->virt */
462 /* For an array with a secondary level there are
463 * multiple vd_config structures, all with the same
464 * guid but with different sec_elmnt_seq.
465 * One of these structures is in 'conf' below.
466 * The others are in other_bvds, not in any
469 struct vd_config
**other_bvds
;
470 __u64
*block_sizes
; /* NULL if all the same */
473 struct vd_config conf
;
474 } *conflist
, *currentconf
;
483 unsigned long long size
; /* sectors */
484 be64 primary_lba
; /* sectors */
485 be64 secondary_lba
; /* sectors */
486 be64 workspace_lba
; /* sectors */
487 int pdnum
; /* index in ->phys */
488 struct spare_assign
*spare
;
489 void *mdupdate
; /* hold metadata update */
491 /* These fields used by auto-layout */
492 int raiddisk
; /* slot to fill in autolayout */
497 struct disk_data disk
;
498 struct vcl
*vlist
[0]; /* max_part in size */
503 static int load_super_ddf_all(struct supertype
*st
, int fd
,
504 void **sbp
, char *devname
);
505 static int get_svd_state(const struct ddf_super
*, const struct vcl
*);
507 validate_geometry_ddf_container(struct supertype
*st
,
508 int level
, int layout
, int raiddisks
,
509 int chunk
, unsigned long long size
,
510 unsigned long long data_offset
,
511 char *dev
, unsigned long long *freesize
,
514 static int validate_geometry_ddf_bvd(struct supertype
*st
,
515 int level
, int layout
, int raiddisks
,
516 int *chunk
, unsigned long long size
,
517 unsigned long long data_offset
,
518 char *dev
, unsigned long long *freesize
,
522 static void free_super_ddf(struct supertype
*st
);
523 static int all_ff(const char *guid
);
524 static unsigned int get_pd_index_from_refnum(const struct vcl
*vc
,
525 be32 refnum
, unsigned int nmax
,
526 const struct vd_config
**bvd
,
528 static void getinfo_super_ddf(struct supertype
*st
, struct mdinfo
*info
, char *map
);
529 static void uuid_from_ddf_guid(const char *guid
, int uuid
[4]);
530 static void uuid_from_super_ddf(struct supertype
*st
, int uuid
[4]);
531 static void _ddf_array_name(char *name
, const struct ddf_super
*ddf
, int i
);
532 static void getinfo_super_ddf_bvd(struct supertype
*st
, struct mdinfo
*info
, char *map
);
533 static int init_super_ddf_bvd(struct supertype
*st
,
534 mdu_array_info_t
*info
,
535 unsigned long long size
,
536 char *name
, char *homehost
,
537 int *uuid
, unsigned long long data_offset
);
540 #define offsetof(t,f) ((size_t)&(((t*)0)->f))
544 static void pr_state(struct ddf_super
*ddf
, const char *msg
)
547 dprintf("%s/%s: ", __func__
, msg
);
548 for (i
= 0; i
< be16_to_cpu(ddf
->active
->max_vd_entries
); i
++) {
549 if (all_ff(ddf
->virt
->entries
[i
].guid
))
551 dprintf("%u(s=%02x i=%02x) ", i
,
552 ddf
->virt
->entries
[i
].state
,
553 ddf
->virt
->entries
[i
].init_state
);
558 static void pr_state(const struct ddf_super
*ddf
, const char *msg
) {}
561 static void _ddf_set_updates_pending(struct ddf_super
*ddf
, struct vd_config
*vc
,
565 vc
->timestamp
= cpu_to_be32(time(0)-DECADE
);
566 vc
->seqnum
= cpu_to_be32(be32_to_cpu(vc
->seqnum
) + 1);
568 if (ddf
->updates_pending
)
570 ddf
->updates_pending
= 1;
571 ddf
->active
->seq
= cpu_to_be32((be32_to_cpu(ddf
->active
->seq
)+1));
575 #define ddf_set_updates_pending(x,v) _ddf_set_updates_pending((x), (v), __func__)
577 static be32
calc_crc(void *buf
, int len
)
579 /* crcs are always at the same place as in the ddf_header */
580 struct ddf_header
*ddf
= buf
;
581 be32 oldcrc
= ddf
->crc
;
583 ddf
->crc
= cpu_to_be32(0xffffffff);
585 newcrc
= crc32(0, buf
, len
);
587 /* The crc is stored (like everything) bigendian, so convert
588 * here for simplicity
590 return cpu_to_be32(newcrc
);
593 #define DDF_INVALID_LEVEL 0xff
594 #define DDF_NO_SECONDARY 0xff
595 static int err_bad_md_layout(const mdu_array_info_t
*array
)
597 pr_err("RAID%d layout %x with %d disks is unsupported for DDF\n",
598 array
->level
, array
->layout
, array
->raid_disks
);
602 static int layout_md2ddf(const mdu_array_info_t
*array
,
603 struct vd_config
*conf
)
605 be16 prim_elmnt_count
= cpu_to_be16(array
->raid_disks
);
606 __u8 prl
= DDF_INVALID_LEVEL
, rlq
= 0;
607 __u8 sec_elmnt_count
= 1;
608 __u8 srl
= DDF_NO_SECONDARY
;
610 switch (array
->level
) {
615 rlq
= DDF_RAID0_SIMPLE
;
619 switch (array
->raid_disks
) {
621 rlq
= DDF_RAID1_SIMPLE
;
624 rlq
= DDF_RAID1_MULTI
;
627 return err_bad_md_layout(array
);
632 if (array
->layout
!= 0)
633 return err_bad_md_layout(array
);
638 switch (array
->layout
) {
639 case ALGORITHM_LEFT_ASYMMETRIC
:
640 rlq
= DDF_RAID5_N_RESTART
;
642 case ALGORITHM_RIGHT_ASYMMETRIC
:
643 rlq
= DDF_RAID5_0_RESTART
;
645 case ALGORITHM_LEFT_SYMMETRIC
:
646 rlq
= DDF_RAID5_N_CONTINUE
;
648 case ALGORITHM_RIGHT_SYMMETRIC
:
649 /* not mentioned in standard */
651 return err_bad_md_layout(array
);
656 switch (array
->layout
) {
657 case ALGORITHM_ROTATING_N_RESTART
:
658 rlq
= DDF_RAID5_N_RESTART
;
660 case ALGORITHM_ROTATING_ZERO_RESTART
:
661 rlq
= DDF_RAID6_0_RESTART
;
663 case ALGORITHM_ROTATING_N_CONTINUE
:
664 rlq
= DDF_RAID5_N_CONTINUE
;
667 return err_bad_md_layout(array
);
672 if (array
->raid_disks
% 2 == 0 && array
->layout
== 0x102) {
673 rlq
= DDF_RAID1_SIMPLE
;
674 prim_elmnt_count
= cpu_to_be16(2);
675 sec_elmnt_count
= array
->raid_disks
/ 2;
678 } else if (array
->raid_disks
% 3 == 0
679 && array
->layout
== 0x103) {
680 rlq
= DDF_RAID1_MULTI
;
681 prim_elmnt_count
= cpu_to_be16(3);
682 sec_elmnt_count
= array
->raid_disks
/ 3;
685 } else if (array
->layout
== 0x201) {
687 rlq
= DDF_RAID1E_OFFSET
;
688 } else if (array
->layout
== 0x102) {
690 rlq
= DDF_RAID1E_ADJACENT
;
692 return err_bad_md_layout(array
);
695 return err_bad_md_layout(array
);
698 conf
->prim_elmnt_count
= prim_elmnt_count
;
701 conf
->sec_elmnt_count
= sec_elmnt_count
;
705 static int err_bad_ddf_layout(const struct vd_config
*conf
)
707 pr_err("DDF RAID %u qualifier %u with %u disks is unsupported\n",
708 conf
->prl
, conf
->rlq
, be16_to_cpu(conf
->prim_elmnt_count
));
712 static int layout_ddf2md(const struct vd_config
*conf
,
713 mdu_array_info_t
*array
)
715 int level
= LEVEL_UNSUPPORTED
;
717 int raiddisks
= be16_to_cpu(conf
->prim_elmnt_count
);
719 if (conf
->sec_elmnt_count
> 1) {
720 /* see also check_secondary() */
721 if (conf
->prl
!= DDF_RAID1
||
722 (conf
->srl
!= DDF_2STRIPED
&& conf
->srl
!= DDF_2SPANNED
)) {
723 pr_err("Unsupported secondary RAID level %u/%u\n",
724 conf
->prl
, conf
->srl
);
727 if (raiddisks
== 2 && conf
->rlq
== DDF_RAID1_SIMPLE
)
729 else if (raiddisks
== 3 && conf
->rlq
== DDF_RAID1_MULTI
)
732 return err_bad_ddf_layout(conf
);
733 raiddisks
*= conf
->sec_elmnt_count
;
740 level
= LEVEL_LINEAR
;
743 if (conf
->rlq
!= DDF_RAID0_SIMPLE
)
744 return err_bad_ddf_layout(conf
);
748 if (!((conf
->rlq
== DDF_RAID1_SIMPLE
&& raiddisks
== 2) ||
749 (conf
->rlq
== DDF_RAID1_MULTI
&& raiddisks
== 3)))
750 return err_bad_ddf_layout(conf
);
754 if (conf
->rlq
== DDF_RAID1E_ADJACENT
)
756 else if (conf
->rlq
== DDF_RAID1E_OFFSET
)
759 return err_bad_ddf_layout(conf
);
763 if (conf
->rlq
!= DDF_RAID4_N
)
764 return err_bad_ddf_layout(conf
);
769 case DDF_RAID5_N_RESTART
:
770 layout
= ALGORITHM_LEFT_ASYMMETRIC
;
772 case DDF_RAID5_0_RESTART
:
773 layout
= ALGORITHM_RIGHT_ASYMMETRIC
;
775 case DDF_RAID5_N_CONTINUE
:
776 layout
= ALGORITHM_LEFT_SYMMETRIC
;
779 return err_bad_ddf_layout(conf
);
785 case DDF_RAID5_N_RESTART
:
786 layout
= ALGORITHM_ROTATING_N_RESTART
;
788 case DDF_RAID6_0_RESTART
:
789 layout
= ALGORITHM_ROTATING_ZERO_RESTART
;
791 case DDF_RAID5_N_CONTINUE
:
792 layout
= ALGORITHM_ROTATING_N_CONTINUE
;
795 return err_bad_ddf_layout(conf
);
800 return err_bad_ddf_layout(conf
);
804 array
->level
= level
;
805 array
->layout
= layout
;
806 array
->raid_disks
= raiddisks
;
810 static int load_ddf_header(int fd
, unsigned long long lba
,
811 unsigned long long size
,
813 struct ddf_header
*hdr
, struct ddf_header
*anchor
)
815 /* read a ddf header (primary or secondary) from fd/lba
816 * and check that it is consistent with anchor
818 * magic, crc, guid, rev, and LBA's header_type, and
819 * everything after header_type must be the same
824 if (lseek64(fd
, lba
<<9, 0) < 0)
827 if (read(fd
, hdr
, 512) != 512)
830 if (!be32_eq(hdr
->magic
, DDF_HEADER_MAGIC
)) {
831 pr_err("%s: bad header magic\n", __func__
);
834 if (!be32_eq(calc_crc(hdr
, 512), hdr
->crc
)) {
835 pr_err("%s: bad CRC\n", __func__
);
838 if (memcmp(anchor
->guid
, hdr
->guid
, DDF_GUID_LEN
) != 0 ||
839 memcmp(anchor
->revision
, hdr
->revision
, 8) != 0 ||
840 !be64_eq(anchor
->primary_lba
, hdr
->primary_lba
) ||
841 !be64_eq(anchor
->secondary_lba
, hdr
->secondary_lba
) ||
843 memcmp(anchor
->pad2
, hdr
->pad2
, 512 -
844 offsetof(struct ddf_header
, pad2
)) != 0) {
845 pr_err("%s: header mismatch\n", __func__
);
849 /* Looks good enough to me... */
853 static void *load_section(int fd
, struct ddf_super
*super
, void *buf
,
854 be32 offset_be
, be32 len_be
, int check
)
856 unsigned long long offset
= be32_to_cpu(offset_be
);
857 unsigned long long len
= be32_to_cpu(len_be
);
858 int dofree
= (buf
== NULL
);
861 if (len
!= 2 && len
!= 8 && len
!= 32
862 && len
!= 128 && len
!= 512)
867 if (!buf
&& posix_memalign(&buf
, 512, len
<<9) != 0)
873 if (super
->active
->type
== 1)
874 offset
+= be64_to_cpu(super
->active
->primary_lba
);
876 offset
+= be64_to_cpu(super
->active
->secondary_lba
);
878 if ((unsigned long long)lseek64(fd
, offset
<<9, 0) != (offset
<<9)) {
883 if ((unsigned long long)read(fd
, buf
, len
<<9) != (len
<<9)) {
891 static int load_ddf_headers(int fd
, struct ddf_super
*super
, char *devname
)
893 unsigned long long dsize
;
895 get_dev_size(fd
, NULL
, &dsize
);
897 if (lseek64(fd
, dsize
-512, 0) < 0) {
899 pr_err("Cannot seek to anchor block on %s: %s\n",
900 devname
, strerror(errno
));
903 if (read(fd
, &super
->anchor
, 512) != 512) {
905 pr_err("Cannot read anchor block on %s: %s\n",
906 devname
, strerror(errno
));
909 if (!be32_eq(super
->anchor
.magic
, DDF_HEADER_MAGIC
)) {
911 pr_err("no DDF anchor found on %s\n",
915 if (!be32_eq(calc_crc(&super
->anchor
, 512), super
->anchor
.crc
)) {
917 pr_err("bad CRC on anchor on %s\n",
921 if (memcmp(super
->anchor
.revision
, DDF_REVISION_0
, 8) != 0 &&
922 memcmp(super
->anchor
.revision
, DDF_REVISION_2
, 8) != 0) {
924 pr_err("can only support super revision"
925 " %.8s and earlier, not %.8s on %s\n",
926 DDF_REVISION_2
, super
->anchor
.revision
,devname
);
929 super
->active
= NULL
;
930 if (load_ddf_header(fd
, be64_to_cpu(super
->anchor
.primary_lba
),
932 &super
->primary
, &super
->anchor
) == 0) {
934 pr_err("Failed to load primary DDF header "
937 super
->active
= &super
->primary
;
939 if (load_ddf_header(fd
, be64_to_cpu(super
->anchor
.secondary_lba
),
941 &super
->secondary
, &super
->anchor
)) {
942 if (super
->active
== NULL
943 || (be32_to_cpu(super
->primary
.seq
)
944 < be32_to_cpu(super
->secondary
.seq
) &&
945 !super
->secondary
.openflag
)
946 || (be32_to_cpu(super
->primary
.seq
)
947 == be32_to_cpu(super
->secondary
.seq
) &&
948 super
->primary
.openflag
&& !super
->secondary
.openflag
)
950 super
->active
= &super
->secondary
;
951 } else if (devname
&&
952 be64_to_cpu(super
->anchor
.secondary_lba
) != ~(__u64
)0)
953 pr_err("Failed to load secondary DDF header on %s\n",
955 if (super
->active
== NULL
)
960 static int load_ddf_global(int fd
, struct ddf_super
*super
, char *devname
)
963 ok
= load_section(fd
, super
, &super
->controller
,
964 super
->active
->controller_section_offset
,
965 super
->active
->controller_section_length
,
967 super
->phys
= load_section(fd
, super
, NULL
,
968 super
->active
->phys_section_offset
,
969 super
->active
->phys_section_length
,
971 super
->pdsize
= be32_to_cpu(super
->active
->phys_section_length
) * 512;
973 super
->virt
= load_section(fd
, super
, NULL
,
974 super
->active
->virt_section_offset
,
975 super
->active
->virt_section_length
,
977 super
->vdsize
= be32_to_cpu(super
->active
->virt_section_length
) * 512;
987 super
->conflist
= NULL
;
990 super
->max_part
= be16_to_cpu(super
->active
->max_partitions
);
991 super
->mppe
= be16_to_cpu(super
->active
->max_primary_element_entries
);
992 super
->conf_rec_len
= be16_to_cpu(super
->active
->config_record_len
);
996 #define DDF_UNUSED_BVD 0xff
997 static int alloc_other_bvds(const struct ddf_super
*ddf
, struct vcl
*vcl
)
999 unsigned int n_vds
= vcl
->conf
.sec_elmnt_count
- 1;
1000 unsigned int i
, vdsize
;
1003 vcl
->other_bvds
= NULL
;
1006 vdsize
= ddf
->conf_rec_len
* 512;
1007 if (posix_memalign(&p
, 512, n_vds
*
1008 (vdsize
+ sizeof(struct vd_config
*))) != 0)
1010 vcl
->other_bvds
= (struct vd_config
**) (p
+ n_vds
* vdsize
);
1011 for (i
= 0; i
< n_vds
; i
++) {
1012 vcl
->other_bvds
[i
] = p
+ i
* vdsize
;
1013 memset(vcl
->other_bvds
[i
], 0, vdsize
);
1014 vcl
->other_bvds
[i
]->sec_elmnt_seq
= DDF_UNUSED_BVD
;
1019 static void add_other_bvd(struct vcl
*vcl
, struct vd_config
*vd
,
1023 for (i
= 0; i
< vcl
->conf
.sec_elmnt_count
-1; i
++)
1024 if (vcl
->other_bvds
[i
]->sec_elmnt_seq
== vd
->sec_elmnt_seq
)
1027 if (i
< vcl
->conf
.sec_elmnt_count
-1) {
1028 if (be32_to_cpu(vd
->seqnum
) <=
1029 be32_to_cpu(vcl
->other_bvds
[i
]->seqnum
))
1032 for (i
= 0; i
< vcl
->conf
.sec_elmnt_count
-1; i
++)
1033 if (vcl
->other_bvds
[i
]->sec_elmnt_seq
== DDF_UNUSED_BVD
)
1035 if (i
== vcl
->conf
.sec_elmnt_count
-1) {
1036 pr_err("no space for sec level config %u, count is %u\n",
1037 vd
->sec_elmnt_seq
, vcl
->conf
.sec_elmnt_count
);
1041 memcpy(vcl
->other_bvds
[i
], vd
, len
);
1044 static int load_ddf_local(int fd
, struct ddf_super
*super
,
1045 char *devname
, int keep
)
1051 unsigned int confsec
;
1053 unsigned int max_virt_disks
=
1054 be16_to_cpu(super
->active
->max_vd_entries
);
1055 unsigned long long dsize
;
1057 /* First the local disk info */
1058 if (posix_memalign((void**)&dl
, 512,
1060 (super
->max_part
) * sizeof(dl
->vlist
[0])) != 0) {
1061 pr_err("%s could not allocate disk info buffer\n",
1066 load_section(fd
, super
, &dl
->disk
,
1067 super
->active
->data_section_offset
,
1068 super
->active
->data_section_length
,
1070 dl
->devname
= devname
? xstrdup(devname
) : NULL
;
1073 dl
->major
= major(stb
.st_rdev
);
1074 dl
->minor
= minor(stb
.st_rdev
);
1075 dl
->next
= super
->dlist
;
1076 dl
->fd
= keep
? fd
: -1;
1079 if (get_dev_size(fd
, devname
, &dsize
))
1080 dl
->size
= dsize
>> 9;
1081 /* If the disks have different sizes, the LBAs will differ
1082 * between phys disks.
1083 * At this point here, the values in super->active must be valid
1084 * for this phys disk. */
1085 dl
->primary_lba
= super
->active
->primary_lba
;
1086 dl
->secondary_lba
= super
->active
->secondary_lba
;
1087 dl
->workspace_lba
= super
->active
->workspace_lba
;
1089 for (i
= 0 ; i
< super
->max_part
; i
++)
1090 dl
->vlist
[i
] = NULL
;
1093 for (i
= 0; i
< be16_to_cpu(super
->active
->max_pd_entries
); i
++)
1094 if (memcmp(super
->phys
->entries
[i
].guid
,
1095 dl
->disk
.guid
, DDF_GUID_LEN
) == 0)
1098 /* Now the config list. */
1099 /* 'conf' is an array of config entries, some of which are
1100 * probably invalid. Those which are good need to be copied into
1104 conf
= load_section(fd
, super
, super
->conf
,
1105 super
->active
->config_section_offset
,
1106 super
->active
->config_section_length
,
1111 confsec
< be32_to_cpu(super
->active
->config_section_length
);
1112 confsec
+= super
->conf_rec_len
) {
1113 struct vd_config
*vd
=
1114 (struct vd_config
*)((char*)conf
+ confsec
*512);
1117 if (be32_eq(vd
->magic
, DDF_SPARE_ASSIGN_MAGIC
)) {
1120 if (posix_memalign((void**)&dl
->spare
, 512,
1121 super
->conf_rec_len
*512) != 0) {
1122 pr_err("%s could not allocate spare info buf\n",
1127 memcpy(dl
->spare
, vd
, super
->conf_rec_len
*512);
1130 if (!be32_eq(vd
->magic
, DDF_VD_CONF_MAGIC
))
1131 /* Must be vendor-unique - I cannot handle those */
1134 for (vcl
= super
->conflist
; vcl
; vcl
= vcl
->next
) {
1135 if (memcmp(vcl
->conf
.guid
,
1136 vd
->guid
, DDF_GUID_LEN
) == 0)
1141 dl
->vlist
[vnum
++] = vcl
;
1142 if (vcl
->other_bvds
!= NULL
&&
1143 vcl
->conf
.sec_elmnt_seq
!= vd
->sec_elmnt_seq
) {
1144 add_other_bvd(vcl
, vd
, super
->conf_rec_len
*512);
1147 if (be32_to_cpu(vd
->seqnum
) <=
1148 be32_to_cpu(vcl
->conf
.seqnum
))
1151 if (posix_memalign((void**)&vcl
, 512,
1152 (super
->conf_rec_len
*512 +
1153 offsetof(struct vcl
, conf
))) != 0) {
1154 pr_err("%s could not allocate vcl buf\n",
1158 vcl
->next
= super
->conflist
;
1159 vcl
->block_sizes
= NULL
; /* FIXME not for CONCAT */
1160 vcl
->conf
.sec_elmnt_count
= vd
->sec_elmnt_count
;
1161 if (alloc_other_bvds(super
, vcl
) != 0) {
1162 pr_err("%s could not allocate other bvds\n",
1167 super
->conflist
= vcl
;
1168 dl
->vlist
[vnum
++] = vcl
;
1170 memcpy(&vcl
->conf
, vd
, super
->conf_rec_len
*512);
1171 for (i
=0; i
< max_virt_disks
; i
++)
1172 if (memcmp(super
->virt
->entries
[i
].guid
,
1173 vcl
->conf
.guid
, DDF_GUID_LEN
)==0)
1175 if (i
< max_virt_disks
)
1182 static int load_super_ddf(struct supertype
*st
, int fd
,
1185 unsigned long long dsize
;
1186 struct ddf_super
*super
;
1189 if (get_dev_size(fd
, devname
, &dsize
) == 0)
1192 if (test_partition(fd
))
1193 /* DDF is not allowed on partitions */
1196 /* 32M is a lower bound */
1197 if (dsize
<= 32*1024*1024) {
1199 pr_err("%s is too small for ddf: "
1200 "size is %llu sectors.\n",
1206 pr_err("%s is an odd size for ddf: "
1207 "size is %llu bytes.\n",
1214 if (posix_memalign((void**)&super
, 512, sizeof(*super
))!= 0) {
1215 pr_err("malloc of %zu failed.\n",
1219 memset(super
, 0, sizeof(*super
));
1221 rv
= load_ddf_headers(fd
, super
, devname
);
1227 /* Have valid headers and have chosen the best. Let's read in the rest*/
1229 rv
= load_ddf_global(fd
, super
, devname
);
1233 pr_err("Failed to load all information "
1234 "sections on %s\n", devname
);
1239 rv
= load_ddf_local(fd
, super
, devname
, 0);
1243 pr_err("Failed to load all information "
1244 "sections on %s\n", devname
);
1249 /* Should possibly check the sections .... */
1252 if (st
->ss
== NULL
) {
1253 st
->ss
= &super_ddf
;
1254 st
->minor_version
= 0;
1261 static void free_super_ddf(struct supertype
*st
)
1263 struct ddf_super
*ddf
= st
->sb
;
1269 while (ddf
->conflist
) {
1270 struct vcl
*v
= ddf
->conflist
;
1271 ddf
->conflist
= v
->next
;
1273 free(v
->block_sizes
);
1276 v->other_bvds[0] points to beginning of buffer,
1277 see alloc_other_bvds()
1279 free(v
->other_bvds
[0]);
1282 while (ddf
->dlist
) {
1283 struct dl
*d
= ddf
->dlist
;
1284 ddf
->dlist
= d
->next
;
1291 while (ddf
->add_list
) {
1292 struct dl
*d
= ddf
->add_list
;
1293 ddf
->add_list
= d
->next
;
1304 static struct supertype
*match_metadata_desc_ddf(char *arg
)
1306 /* 'ddf' only supports containers */
1307 struct supertype
*st
;
1308 if (strcmp(arg
, "ddf") != 0 &&
1309 strcmp(arg
, "default") != 0
1313 st
= xcalloc(1, sizeof(*st
));
1314 st
->ss
= &super_ddf
;
1316 st
->minor_version
= 0;
1323 static mapping_t ddf_state
[] = {
1329 { "Partially Optimal", 5},
1335 static mapping_t ddf_init_state
[] = {
1336 { "Not Initialised", 0},
1337 { "QuickInit in Progress", 1},
1338 { "Fully Initialised", 2},
1342 static mapping_t ddf_access
[] = {
1346 { "Blocked (no access)", 3},
1350 static mapping_t ddf_level
[] = {
1351 { "RAID0", DDF_RAID0
},
1352 { "RAID1", DDF_RAID1
},
1353 { "RAID3", DDF_RAID3
},
1354 { "RAID4", DDF_RAID4
},
1355 { "RAID5", DDF_RAID5
},
1356 { "RAID1E",DDF_RAID1E
},
1357 { "JBOD", DDF_JBOD
},
1358 { "CONCAT",DDF_CONCAT
},
1359 { "RAID5E",DDF_RAID5E
},
1360 { "RAID5EE",DDF_RAID5EE
},
1361 { "RAID6", DDF_RAID6
},
1364 static mapping_t ddf_sec_level
[] = {
1365 { "Striped", DDF_2STRIPED
},
1366 { "Mirrored", DDF_2MIRRORED
},
1367 { "Concat", DDF_2CONCAT
},
1368 { "Spanned", DDF_2SPANNED
},
1373 static int all_ff(const char *guid
)
1376 for (i
= 0; i
< DDF_GUID_LEN
; i
++)
1377 if (guid
[i
] != (char)0xff)
1382 static const char *guid_str(const char *guid
)
1384 static char buf
[DDF_GUID_LEN
*2+1];
1387 for (i
= 0; i
< DDF_GUID_LEN
; i
++) {
1388 unsigned char c
= guid
[i
];
1389 if (c
>= 32 && c
< 127)
1390 p
+= sprintf(p
, "%c", c
);
1392 p
+= sprintf(p
, "%02x", c
);
1395 return (const char *) buf
;
1399 static void print_guid(char *guid
, int tstamp
)
1401 /* A GUIDs are part (or all) ASCII and part binary.
1402 * They tend to be space padded.
1403 * We print the GUID in HEX, then in parentheses add
1404 * any initial ASCII sequence, and a possible
1405 * time stamp from bytes 16-19
1407 int l
= DDF_GUID_LEN
;
1410 for (i
=0 ; i
<DDF_GUID_LEN
; i
++) {
1411 if ((i
&3)==0 && i
!= 0) printf(":");
1412 printf("%02X", guid
[i
]&255);
1416 while (l
&& guid
[l
-1] == ' ')
1418 for (i
=0 ; i
<l
; i
++) {
1419 if (guid
[i
] >= 0x20 && guid
[i
] < 0x7f)
1420 fputc(guid
[i
], stdout
);
1425 time_t then
= __be32_to_cpu(*(__u32
*)(guid
+16)) + DECADE
;
1428 tm
= localtime(&then
);
1429 strftime(tbuf
, 100, " %D %T",tm
);
1430 fputs(tbuf
, stdout
);
1435 static void examine_vd(int n
, struct ddf_super
*sb
, char *guid
)
1437 int crl
= sb
->conf_rec_len
;
1440 for (vcl
= sb
->conflist
; vcl
; vcl
= vcl
->next
) {
1442 struct vd_config
*vc
= &vcl
->conf
;
1444 if (!be32_eq(calc_crc(vc
, crl
*512), vc
->crc
))
1446 if (memcmp(vc
->guid
, guid
, DDF_GUID_LEN
) != 0)
1449 /* Ok, we know about this VD, let's give more details */
1450 printf(" Raid Devices[%d] : %d (", n
,
1451 be16_to_cpu(vc
->prim_elmnt_count
));
1452 for (i
= 0; i
< be16_to_cpu(vc
->prim_elmnt_count
); i
++) {
1454 int cnt
= be16_to_cpu(sb
->phys
->max_pdes
);
1455 for (j
=0; j
<cnt
; j
++)
1456 if (be32_eq(vc
->phys_refnum
[i
],
1457 sb
->phys
->entries
[j
].refnum
))
1466 if (vc
->chunk_shift
!= 255)
1467 printf(" Chunk Size[%d] : %d sectors\n", n
,
1468 1 << vc
->chunk_shift
);
1469 printf(" Raid Level[%d] : %s\n", n
,
1470 map_num(ddf_level
, vc
->prl
)?:"-unknown-");
1471 if (vc
->sec_elmnt_count
!= 1) {
1472 printf(" Secondary Position[%d] : %d of %d\n", n
,
1473 vc
->sec_elmnt_seq
, vc
->sec_elmnt_count
);
1474 printf(" Secondary Level[%d] : %s\n", n
,
1475 map_num(ddf_sec_level
, vc
->srl
) ?: "-unknown-");
1477 printf(" Device Size[%d] : %llu\n", n
,
1478 be64_to_cpu(vc
->blocks
)/2);
1479 printf(" Array Size[%d] : %llu\n", n
,
1480 be64_to_cpu(vc
->array_blocks
)/2);
1484 static void examine_vds(struct ddf_super
*sb
)
1486 int cnt
= be16_to_cpu(sb
->virt
->populated_vdes
);
1488 printf(" Virtual Disks : %d\n", cnt
);
1490 for (i
= 0; i
< be16_to_cpu(sb
->virt
->max_vdes
); i
++) {
1491 struct virtual_entry
*ve
= &sb
->virt
->entries
[i
];
1492 if (all_ff(ve
->guid
))
1495 printf(" VD GUID[%d] : ", i
); print_guid(ve
->guid
, 1);
1497 printf(" unit[%d] : %d\n", i
, be16_to_cpu(ve
->unit
));
1498 printf(" state[%d] : %s, %s%s\n", i
,
1499 map_num(ddf_state
, ve
->state
& 7),
1500 (ve
->state
& DDF_state_morphing
) ? "Morphing, ": "",
1501 (ve
->state
& DDF_state_inconsistent
)? "Not Consistent" : "Consistent");
1502 printf(" init state[%d] : %s\n", i
,
1503 map_num(ddf_init_state
, ve
->init_state
&DDF_initstate_mask
));
1504 printf(" access[%d] : %s\n", i
,
1505 map_num(ddf_access
, (ve
->init_state
& DDF_access_mask
) >> 6));
1506 printf(" Name[%d] : %.16s\n", i
, ve
->name
);
1507 examine_vd(i
, sb
, ve
->guid
);
1509 if (cnt
) printf("\n");
1512 static void examine_pds(struct ddf_super
*sb
)
1514 int cnt
= be16_to_cpu(sb
->phys
->max_pdes
);
1518 printf(" Physical Disks : %d\n", cnt
);
1519 printf(" Number RefNo Size Device Type/State\n");
1521 for (dl
= sb
->dlist
; dl
; dl
= dl
->next
)
1524 for (i
=0 ; i
<cnt
; i
++) {
1525 struct phys_disk_entry
*pd
= &sb
->phys
->entries
[i
];
1526 int type
= be16_to_cpu(pd
->type
);
1527 int state
= be16_to_cpu(pd
->state
);
1529 if (be32_to_cpu(pd
->refnum
) == 0xffffffff)
1532 //printf(" PD GUID[%d] : ", i); print_guid(pd->guid, 0);
1534 printf(" %3d %08x ", i
,
1535 be32_to_cpu(pd
->refnum
));
1537 be64_to_cpu(pd
->config_size
)>>1);
1538 for (dl
= sb
->dlist
; dl
; dl
= dl
->next
) {
1539 if (be32_eq(dl
->disk
.refnum
, pd
->refnum
)) {
1540 char *dv
= map_dev(dl
->major
, dl
->minor
, 0);
1542 printf("%-15s", dv
);
1551 printf(" %s%s%s%s%s",
1552 (type
&2) ? "active":"",
1553 (type
&4) ? "Global-Spare":"",
1554 (type
&8) ? "spare" : "",
1555 (type
&16)? ", foreign" : "",
1556 (type
&32)? "pass-through" : "");
1557 if (state
& DDF_Failed
)
1558 /* This over-rides these three */
1559 state
&= ~(DDF_Online
|DDF_Rebuilding
|DDF_Transition
);
1560 printf("/%s%s%s%s%s%s%s",
1561 (state
&1)? "Online": "Offline",
1562 (state
&2)? ", Failed": "",
1563 (state
&4)? ", Rebuilding": "",
1564 (state
&8)? ", in-transition": "",
1565 (state
&16)? ", SMART-errors": "",
1566 (state
&32)? ", Unrecovered-Read-Errors": "",
1567 (state
&64)? ", Missing" : "");
1570 for (dl
= sb
->dlist
; dl
; dl
= dl
->next
) {
1575 printf(" Physical disks not in metadata!:\n");
1577 dv
= map_dev(dl
->major
, dl
->minor
, 0);
1578 printf(" %08x %s\n", be32_to_cpu(dl
->disk
.refnum
),
1579 dv
? dv
: "-unknown-");
1585 static void examine_super_ddf(struct supertype
*st
, char *homehost
)
1587 struct ddf_super
*sb
= st
->sb
;
1589 printf(" Magic : %08x\n", be32_to_cpu(sb
->anchor
.magic
));
1590 printf(" Version : %.8s\n", sb
->anchor
.revision
);
1591 printf("Controller GUID : "); print_guid(sb
->controller
.guid
, 0);
1593 printf(" Container GUID : "); print_guid(sb
->anchor
.guid
, 1);
1595 printf(" Seq : %08x\n", be32_to_cpu(sb
->active
->seq
));
1596 printf(" Redundant hdr : %s\n", (be32_eq(sb
->secondary
.magic
,
1603 static unsigned int get_vd_num_of_subarray(struct supertype
*st
)
1606 * Figure out the VD number for this supertype.
1607 * Returns DDF_CONTAINER for the container itself,
1608 * and DDF_NOTFOUND on error.
1610 struct ddf_super
*ddf
= st
->sb
;
1615 if (*st
->container_devnm
== '\0')
1616 return DDF_CONTAINER
;
1618 sra
= sysfs_read(-1, st
->devnm
, GET_VERSION
);
1619 if (!sra
|| sra
->array
.major_version
!= -1 ||
1620 sra
->array
.minor_version
!= -2 ||
1621 !is_subarray(sra
->text_version
))
1622 return DDF_NOTFOUND
;
1624 sub
= strchr(sra
->text_version
+ 1, '/');
1626 vcnum
= strtoul(sub
+ 1, &end
, 10);
1627 if (sub
== NULL
|| *sub
== '\0' || *end
!= '\0' ||
1628 vcnum
>= be16_to_cpu(ddf
->active
->max_vd_entries
))
1629 return DDF_NOTFOUND
;
1634 static void brief_examine_super_ddf(struct supertype
*st
, int verbose
)
1636 /* We just write a generic DDF ARRAY entry
1640 getinfo_super_ddf(st
, &info
, NULL
);
1641 fname_from_uuid(st
, &info
, nbuf
, ':');
1643 printf("ARRAY metadata=ddf UUID=%s\n", nbuf
+ 5);
1646 static void brief_examine_subarrays_ddf(struct supertype
*st
, int verbose
)
1648 /* We write a DDF ARRAY member entry for each vd, identifying container
1649 * by uuid and member by unit number and uuid.
1651 struct ddf_super
*ddf
= st
->sb
;
1655 getinfo_super_ddf(st
, &info
, NULL
);
1656 fname_from_uuid(st
, &info
, nbuf
, ':');
1658 for (i
= 0; i
< be16_to_cpu(ddf
->virt
->max_vdes
); i
++) {
1659 struct virtual_entry
*ve
= &ddf
->virt
->entries
[i
];
1663 if (all_ff(ve
->guid
))
1665 memcpy(vcl
.conf
.guid
, ve
->guid
, DDF_GUID_LEN
);
1666 ddf
->currentconf
=&vcl
;
1668 uuid_from_super_ddf(st
, info
.uuid
);
1669 fname_from_uuid(st
, &info
, nbuf1
, ':');
1670 _ddf_array_name(namebuf
, ddf
, i
);
1671 printf("ARRAY%s%s container=%s member=%d UUID=%s\n",
1672 namebuf
[0] == '\0' ? "" : " /dev/md/", namebuf
,
1673 nbuf
+5, i
, nbuf1
+5);
1677 static void export_examine_super_ddf(struct supertype
*st
)
1681 getinfo_super_ddf(st
, &info
, NULL
);
1682 fname_from_uuid(st
, &info
, nbuf
, ':');
1683 printf("MD_METADATA=ddf\n");
1684 printf("MD_LEVEL=container\n");
1685 printf("MD_UUID=%s\n", nbuf
+5);
1686 printf("MD_DEVICES=%u\n",
1687 be16_to_cpu(((struct ddf_super
*)st
->sb
)->phys
->used_pdes
));
1690 static int copy_metadata_ddf(struct supertype
*st
, int from
, int to
)
1693 unsigned long long dsize
, offset
;
1695 struct ddf_header
*ddf
;
1698 /* The meta consists of an anchor, a primary, and a secondary.
1699 * This all lives at the end of the device.
1700 * So it is easiest to find the earliest of primary and
1701 * secondary, and copy everything from there.
1703 * Anchor is 512 from end. It contains primary_lba and secondary_lba
1704 * we choose one of those
1707 if (posix_memalign(&buf
, 4096, 4096) != 0)
1710 if (!get_dev_size(from
, NULL
, &dsize
))
1713 if (lseek64(from
, dsize
-512, 0) < 0)
1715 if (read(from
, buf
, 512) != 512)
1718 if (!be32_eq(ddf
->magic
, DDF_HEADER_MAGIC
) ||
1719 !be32_eq(calc_crc(ddf
, 512), ddf
->crc
) ||
1720 (memcmp(ddf
->revision
, DDF_REVISION_0
, 8) != 0 &&
1721 memcmp(ddf
->revision
, DDF_REVISION_2
, 8) != 0))
1724 offset
= dsize
- 512;
1725 if ((be64_to_cpu(ddf
->primary_lba
) << 9) < offset
)
1726 offset
= be64_to_cpu(ddf
->primary_lba
) << 9;
1727 if ((be64_to_cpu(ddf
->secondary_lba
) << 9) < offset
)
1728 offset
= be64_to_cpu(ddf
->secondary_lba
) << 9;
1730 bytes
= dsize
- offset
;
1732 if (lseek64(from
, offset
, 0) < 0 ||
1733 lseek64(to
, offset
, 0) < 0)
1735 while (written
< bytes
) {
1736 int n
= bytes
- written
;
1739 if (read(from
, buf
, n
) != n
)
1741 if (write(to
, buf
, n
) != n
)
1752 static void detail_super_ddf(struct supertype
*st
, char *homehost
)
1754 struct ddf_super
*sb
= st
->sb
;
1755 int cnt
= be16_to_cpu(sb
->virt
->populated_vdes
);
1757 printf(" Container GUID : "); print_guid(sb
->anchor
.guid
, 1);
1759 printf(" Seq : %08x\n", be32_to_cpu(sb
->active
->seq
));
1760 printf(" Virtual Disks : %d\n", cnt
);
1764 static const char *vendors_with_variable_volume_UUID
[] = {
1768 static int volume_id_is_reliable(const struct ddf_super
*ddf
)
1770 int n
= ARRAY_SIZE(vendors_with_variable_volume_UUID
);
1772 for (i
= 0; i
< n
; i
++)
1773 if (!memcmp(ddf
->controller
.guid
,
1774 vendors_with_variable_volume_UUID
[i
], 8))
1779 static void uuid_of_ddf_subarray(const struct ddf_super
*ddf
,
1780 unsigned int vcnum
, int uuid
[4])
1782 char buf
[DDF_GUID_LEN
+18], sha
[20], *p
;
1783 struct sha1_ctx ctx
;
1784 if (volume_id_is_reliable(ddf
)) {
1785 uuid_from_ddf_guid(ddf
->virt
->entries
[vcnum
].guid
, uuid
);
1789 * Some fake RAID BIOSes (in particular, LSI ones) change the
1790 * VD GUID at every boot. These GUIDs are not suitable for
1791 * identifying an array. Luckily the header GUID appears to
1793 * We construct a pseudo-UUID from the header GUID and those
1794 * properties of the subarray that we expect to remain constant.
1796 memset(buf
, 0, sizeof(buf
));
1798 memcpy(p
, ddf
->anchor
.guid
, DDF_GUID_LEN
);
1800 memcpy(p
, ddf
->virt
->entries
[vcnum
].name
, 16);
1802 *((__u16
*) p
) = vcnum
;
1803 sha1_init_ctx(&ctx
);
1804 sha1_process_bytes(buf
, sizeof(buf
), &ctx
);
1805 sha1_finish_ctx(&ctx
, sha
);
1806 memcpy(uuid
, sha
, 4*4);
1809 static void brief_detail_super_ddf(struct supertype
*st
)
1813 struct ddf_super
*ddf
= st
->sb
;
1814 unsigned int vcnum
= get_vd_num_of_subarray(st
);
1815 if (vcnum
== DDF_CONTAINER
)
1816 uuid_from_super_ddf(st
, info
.uuid
);
1817 else if (vcnum
== DDF_NOTFOUND
)
1820 uuid_of_ddf_subarray(ddf
, vcnum
, info
.uuid
);
1821 fname_from_uuid(st
, &info
, nbuf
,':');
1822 printf(" UUID=%s", nbuf
+ 5);
1826 static int match_home_ddf(struct supertype
*st
, char *homehost
)
1828 /* It matches 'this' host if the controller is a
1829 * Linux-MD controller with vendor_data matching
1830 * the hostname. It would be nice if we could
1831 * test against controller found in /sys or somewhere...
1833 struct ddf_super
*ddf
= st
->sb
;
1838 len
= strlen(homehost
);
1840 return (memcmp(ddf
->controller
.guid
, T10
, 8) == 0 &&
1841 len
< sizeof(ddf
->controller
.vendor_data
) &&
1842 memcmp(ddf
->controller
.vendor_data
, homehost
,len
) == 0 &&
1843 ddf
->controller
.vendor_data
[len
] == 0);
1847 static int find_index_in_bvd(const struct ddf_super
*ddf
,
1848 const struct vd_config
*conf
, unsigned int n
,
1849 unsigned int *n_bvd
)
1852 * Find the index of the n-th valid physical disk in this BVD.
1853 * Unused entries can be sprinkled in with the used entries,
1858 i
< ddf
->mppe
&& j
< be16_to_cpu(conf
->prim_elmnt_count
);
1860 if (be32_to_cpu(conf
->phys_refnum
[i
]) != 0xffffffff) {
1868 dprintf("%s: couldn't find BVD member %u (total %u)\n",
1869 __func__
, n
, be16_to_cpu(conf
->prim_elmnt_count
));
1873 /* Given a member array instance number, and a raid disk within that instance,
1874 * find the vd_config structure. The offset of the given disk in the phys_refnum
1875 * table is returned in n_bvd.
1876 * For two-level members with a secondary raid level the vd_config for
1877 * the appropriate BVD is returned.
1878 * The return value is always &vlc->conf, where vlc is returned in last pointer.
1880 static struct vd_config
*find_vdcr(struct ddf_super
*ddf
, unsigned int inst
,
1882 unsigned int *n_bvd
, struct vcl
**vcl
)
1886 for (v
= ddf
->conflist
; v
; v
= v
->next
) {
1887 unsigned int nsec
, ibvd
= 0;
1888 struct vd_config
*conf
;
1889 if (inst
!= v
->vcnum
)
1892 if (conf
->sec_elmnt_count
== 1) {
1893 if (find_index_in_bvd(ddf
, conf
, n
, n_bvd
)) {
1899 if (v
->other_bvds
== NULL
) {
1900 pr_err("%s: BUG: other_bvds is NULL, nsec=%u\n",
1901 __func__
, conf
->sec_elmnt_count
);
1904 nsec
= n
/ be16_to_cpu(conf
->prim_elmnt_count
);
1905 if (conf
->sec_elmnt_seq
!= nsec
) {
1906 for (ibvd
= 1; ibvd
< conf
->sec_elmnt_count
; ibvd
++) {
1907 if (v
->other_bvds
[ibvd
-1]->sec_elmnt_seq
1911 if (ibvd
== conf
->sec_elmnt_count
)
1913 conf
= v
->other_bvds
[ibvd
-1];
1915 if (!find_index_in_bvd(ddf
, conf
,
1916 n
- nsec
*conf
->sec_elmnt_count
, n_bvd
))
1918 dprintf("%s: found disk %u as member %u in bvd %d of array %u\n"
1919 , __func__
, n
, *n_bvd
, ibvd
, inst
);
1924 pr_err("%s: Could't find disk %d in array %u\n", __func__
, n
, inst
);
1929 static int find_phys(const struct ddf_super
*ddf
, be32 phys_refnum
)
1931 /* Find the entry in phys_disk which has the given refnum
1932 * and return it's index
1935 for (i
= 0; i
< be16_to_cpu(ddf
->phys
->max_pdes
); i
++)
1936 if (be32_eq(ddf
->phys
->entries
[i
].refnum
, phys_refnum
))
1941 static void uuid_from_ddf_guid(const char *guid
, int uuid
[4])
1944 struct sha1_ctx ctx
;
1945 sha1_init_ctx(&ctx
);
1946 sha1_process_bytes(guid
, DDF_GUID_LEN
, &ctx
);
1947 sha1_finish_ctx(&ctx
, buf
);
1948 memcpy(uuid
, buf
, 4*4);
1951 static void uuid_from_super_ddf(struct supertype
*st
, int uuid
[4])
1953 /* The uuid returned here is used for:
1954 * uuid to put into bitmap file (Create, Grow)
1955 * uuid for backup header when saving critical section (Grow)
1956 * comparing uuids when re-adding a device into an array
1957 * In these cases the uuid required is that of the data-array,
1958 * not the device-set.
1959 * uuid to recognise same set when adding a missing device back
1960 * to an array. This is a uuid for the device-set.
1962 * For each of these we can make do with a truncated
1963 * or hashed uuid rather than the original, as long as
1965 * In the case of SVD we assume the BVD is of interest,
1966 * though that might be the case if a bitmap were made for
1967 * a mirrored SVD - worry about that later.
1968 * So we need to find the VD configuration record for the
1969 * relevant BVD and extract the GUID and Secondary_Element_Seq.
1970 * The first 16 bytes of the sha1 of these is used.
1972 struct ddf_super
*ddf
= st
->sb
;
1973 struct vcl
*vcl
= ddf
->currentconf
;
1976 uuid_of_ddf_subarray(ddf
, vcl
->vcnum
, uuid
);
1978 uuid_from_ddf_guid(ddf
->anchor
.guid
, uuid
);
1981 static void getinfo_super_ddf(struct supertype
*st
, struct mdinfo
*info
, char *map
)
1983 struct ddf_super
*ddf
= st
->sb
;
1984 int map_disks
= info
->array
.raid_disks
;
1987 if (ddf
->currentconf
) {
1988 getinfo_super_ddf_bvd(st
, info
, map
);
1991 memset(info
, 0, sizeof(*info
));
1993 info
->array
.raid_disks
= be16_to_cpu(ddf
->phys
->used_pdes
);
1994 info
->array
.level
= LEVEL_CONTAINER
;
1995 info
->array
.layout
= 0;
1996 info
->array
.md_minor
= -1;
1997 cptr
= (__u32
*)(ddf
->anchor
.guid
+ 16);
1998 info
->array
.ctime
= DECADE
+ __be32_to_cpu(*cptr
);
2000 info
->array
.chunk_size
= 0;
2001 info
->container_enough
= 1;
2003 info
->disk
.major
= 0;
2004 info
->disk
.minor
= 0;
2006 struct phys_disk_entry
*pde
= NULL
;
2007 info
->disk
.number
= be32_to_cpu(ddf
->dlist
->disk
.refnum
);
2008 info
->disk
.raid_disk
= find_phys(ddf
, ddf
->dlist
->disk
.refnum
);
2010 info
->data_offset
= be64_to_cpu(ddf
->phys
->
2011 entries
[info
->disk
.raid_disk
].
2013 info
->component_size
= ddf
->dlist
->size
- info
->data_offset
;
2014 if (info
->disk
.raid_disk
>= 0)
2015 pde
= ddf
->phys
->entries
+ info
->disk
.raid_disk
;
2017 !(be16_to_cpu(pde
->state
) & DDF_Failed
) &&
2018 !(be16_to_cpu(pde
->state
) & DDF_Missing
))
2019 info
->disk
.state
= (1 << MD_DISK_SYNC
) | (1 << MD_DISK_ACTIVE
);
2021 info
->disk
.state
= 1 << MD_DISK_FAULTY
;
2024 /* There should always be a dlist, but just in case...*/
2025 info
->disk
.number
= -1;
2026 info
->disk
.raid_disk
= -1;
2027 info
->disk
.state
= (1 << MD_DISK_SYNC
) | (1 << MD_DISK_ACTIVE
);
2029 info
->events
= be32_to_cpu(ddf
->active
->seq
);
2030 info
->array
.utime
= DECADE
+ be32_to_cpu(ddf
->active
->timestamp
);
2032 info
->recovery_start
= MaxSector
;
2033 info
->reshape_active
= 0;
2034 info
->recovery_blocked
= 0;
2037 info
->array
.major_version
= -1;
2038 info
->array
.minor_version
= -2;
2039 strcpy(info
->text_version
, "ddf");
2040 info
->safe_mode_delay
= 0;
2042 uuid_from_super_ddf(st
, info
->uuid
);
2046 for (i
= 0 ; i
< map_disks
; i
++) {
2047 if (i
< info
->array
.raid_disks
&&
2048 !(be16_to_cpu(ddf
->phys
->entries
[i
].state
)
2057 /* size of name must be at least 17 bytes! */
2058 static void _ddf_array_name(char *name
, const struct ddf_super
*ddf
, int i
)
2061 memcpy(name
, ddf
->virt
->entries
[i
].name
, 16);
2063 for(j
= 0; j
< 16; j
++)
2068 static void getinfo_super_ddf_bvd(struct supertype
*st
, struct mdinfo
*info
, char *map
)
2070 struct ddf_super
*ddf
= st
->sb
;
2071 struct vcl
*vc
= ddf
->currentconf
;
2072 int cd
= ddf
->currentdev
;
2076 int map_disks
= info
->array
.raid_disks
;
2078 struct vd_config
*conf
;
2080 memset(info
, 0, sizeof(*info
));
2081 if (layout_ddf2md(&vc
->conf
, &info
->array
) == -1)
2083 info
->array
.md_minor
= -1;
2084 cptr
= (__u32
*)(vc
->conf
.guid
+ 16);
2085 info
->array
.ctime
= DECADE
+ __be32_to_cpu(*cptr
);
2086 info
->array
.utime
= DECADE
+ be32_to_cpu(vc
->conf
.timestamp
);
2087 info
->array
.chunk_size
= 512 << vc
->conf
.chunk_shift
;
2088 info
->custom_array_size
= be64_to_cpu(vc
->conf
.array_blocks
);
2091 n_prim
= be16_to_cpu(conf
->prim_elmnt_count
);
2092 if (conf
->sec_elmnt_count
> 1 && cd
>= n_prim
) {
2093 int ibvd
= cd
/ n_prim
- 1;
2095 conf
= vc
->other_bvds
[ibvd
];
2098 if (cd
>= 0 && (unsigned)cd
< ddf
->mppe
) {
2100 be64_to_cpu(LBA_OFFSET(ddf
, conf
)[cd
]);
2101 if (vc
->block_sizes
)
2102 info
->component_size
= vc
->block_sizes
[cd
];
2104 info
->component_size
= be64_to_cpu(conf
->blocks
);
2106 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
2107 if (be32_eq(dl
->disk
.refnum
, conf
->phys_refnum
[cd
]))
2111 info
->disk
.major
= 0;
2112 info
->disk
.minor
= 0;
2113 info
->disk
.state
= 0;
2114 if (dl
&& dl
->pdnum
>= 0) {
2115 info
->disk
.major
= dl
->major
;
2116 info
->disk
.minor
= dl
->minor
;
2117 info
->disk
.raid_disk
= cd
+ conf
->sec_elmnt_seq
2118 * be16_to_cpu(conf
->prim_elmnt_count
);
2119 info
->disk
.number
= dl
->pdnum
;
2120 info
->disk
.state
= 0;
2121 if (info
->disk
.number
>= 0 &&
2122 (be16_to_cpu(ddf
->phys
->entries
[info
->disk
.number
].state
) & DDF_Online
) &&
2123 !(be16_to_cpu(ddf
->phys
->entries
[info
->disk
.number
].state
) & DDF_Failed
))
2124 info
->disk
.state
= (1<<MD_DISK_SYNC
)|(1<<MD_DISK_ACTIVE
);
2125 info
->events
= be32_to_cpu(ddf
->active
->seq
);
2128 info
->container_member
= ddf
->currentconf
->vcnum
;
2130 info
->recovery_start
= MaxSector
;
2131 info
->resync_start
= 0;
2132 info
->reshape_active
= 0;
2133 info
->recovery_blocked
= 0;
2134 if (!(ddf
->virt
->entries
[info
->container_member
].state
2135 & DDF_state_inconsistent
) &&
2136 (ddf
->virt
->entries
[info
->container_member
].init_state
2137 & DDF_initstate_mask
)
2139 info
->resync_start
= MaxSector
;
2141 uuid_from_super_ddf(st
, info
->uuid
);
2143 info
->array
.major_version
= -1;
2144 info
->array
.minor_version
= -2;
2145 sprintf(info
->text_version
, "/%s/%d",
2146 st
->container_devnm
,
2147 info
->container_member
);
2148 info
->safe_mode_delay
= DDF_SAFE_MODE_DELAY
;
2150 _ddf_array_name(info
->name
, ddf
, info
->container_member
);
2153 for (j
= 0; j
< map_disks
; j
++) {
2155 if (j
< info
->array
.raid_disks
) {
2156 int i
= find_phys(ddf
, vc
->conf
.phys_refnum
[j
]);
2158 (be16_to_cpu(ddf
->phys
->entries
[i
].state
)
2160 !(be16_to_cpu(ddf
->phys
->entries
[i
].state
)
2167 static int update_super_ddf(struct supertype
*st
, struct mdinfo
*info
,
2169 char *devname
, int verbose
,
2170 int uuid_set
, char *homehost
)
2172 /* For 'assemble' and 'force' we need to return non-zero if any
2173 * change was made. For others, the return value is ignored.
2174 * Update options are:
2175 * force-one : This device looks a bit old but needs to be included,
2176 * update age info appropriately.
2177 * assemble: clear any 'faulty' flag to allow this device to
2179 * force-array: Array is degraded but being forced, mark it clean
2180 * if that will be needed to assemble it.
2182 * newdev: not used ????
2183 * grow: Array has gained a new device - this is currently for
2185 * resync: mark as dirty so a resync will happen.
2186 * uuid: Change the uuid of the array to match what is given
2187 * homehost: update the recorded homehost
2188 * name: update the name - preserving the homehost
2189 * _reshape_progress: record new reshape_progress position.
2191 * Following are not relevant for this version:
2192 * sparc2.2 : update from old dodgey metadata
2193 * super-minor: change the preferred_minor number
2194 * summaries: update redundant counters.
2197 // struct ddf_super *ddf = st->sb;
2198 // struct vd_config *vd = find_vdcr(ddf, info->container_member);
2199 // struct virtual_entry *ve = find_ve(ddf);
2201 /* we don't need to handle "force-*" or "assemble" as
2202 * there is no need to 'trick' the kernel. When the metadata is
2203 * first updated to activate the array, all the implied modifications
2207 if (strcmp(update
, "grow") == 0) {
2209 } else if (strcmp(update
, "resync") == 0) {
2210 // info->resync_checkpoint = 0;
2211 } else if (strcmp(update
, "homehost") == 0) {
2212 /* homehost is stored in controller->vendor_data,
2213 * or it is when we are the vendor
2215 // if (info->vendor_is_local)
2216 // strcpy(ddf->controller.vendor_data, homehost);
2218 } else if (strcmp(update
, "name") == 0) {
2219 /* name is stored in virtual_entry->name */
2220 // memset(ve->name, ' ', 16);
2221 // strncpy(ve->name, info->name, 16);
2223 } else if (strcmp(update
, "_reshape_progress") == 0) {
2224 /* We don't support reshape yet */
2225 } else if (strcmp(update
, "assemble") == 0 ) {
2226 /* Do nothing, just succeed */
2231 // update_all_csum(ddf);
2236 static void make_header_guid(char *guid
)
2239 /* Create a DDF Header of Virtual Disk GUID */
2241 /* 24 bytes of fiction required.
2242 * first 8 are a 'vendor-id' - "Linux-MD"
2243 * next 8 are controller type.. how about 0X DEAD BEEF 0000 0000
2244 * Remaining 8 random number plus timestamp
2246 memcpy(guid
, T10
, sizeof(T10
));
2247 stamp
= cpu_to_be32(0xdeadbeef);
2248 memcpy(guid
+8, &stamp
, 4);
2249 stamp
= cpu_to_be32(0);
2250 memcpy(guid
+12, &stamp
, 4);
2251 stamp
= cpu_to_be32(time(0) - DECADE
);
2252 memcpy(guid
+16, &stamp
, 4);
2253 stamp
._v32
= random32();
2254 memcpy(guid
+20, &stamp
, 4);
2257 static unsigned int find_unused_vde(const struct ddf_super
*ddf
)
2260 for (i
= 0; i
< be16_to_cpu(ddf
->virt
->max_vdes
); i
++) {
2261 if (all_ff(ddf
->virt
->entries
[i
].guid
))
2264 return DDF_NOTFOUND
;
2267 static unsigned int find_vde_by_name(const struct ddf_super
*ddf
,
2272 return DDF_NOTFOUND
;
2273 for (i
= 0; i
< be16_to_cpu(ddf
->virt
->max_vdes
); i
++) {
2274 if (all_ff(ddf
->virt
->entries
[i
].guid
))
2276 if (!strncmp(name
, ddf
->virt
->entries
[i
].name
,
2277 sizeof(ddf
->virt
->entries
[i
].name
)))
2280 return DDF_NOTFOUND
;
2284 static unsigned int find_vde_by_guid(const struct ddf_super
*ddf
,
2288 if (guid
== NULL
|| all_ff(guid
))
2289 return DDF_NOTFOUND
;
2290 for (i
= 0; i
< be16_to_cpu(ddf
->virt
->max_vdes
); i
++)
2291 if (!memcmp(ddf
->virt
->entries
[i
].guid
, guid
, DDF_GUID_LEN
))
2293 return DDF_NOTFOUND
;
2297 static int init_super_ddf(struct supertype
*st
,
2298 mdu_array_info_t
*info
,
2299 unsigned long long size
, char *name
, char *homehost
,
2300 int *uuid
, unsigned long long data_offset
)
2302 /* This is primarily called by Create when creating a new array.
2303 * We will then get add_to_super called for each component, and then
2304 * write_init_super called to write it out to each device.
2305 * For DDF, Create can create on fresh devices or on a pre-existing
2307 * To create on a pre-existing array a different method will be called.
2308 * This one is just for fresh drives.
2310 * We need to create the entire 'ddf' structure which includes:
2311 * DDF headers - these are easy.
2312 * Controller data - a Sector describing this controller .. not that
2313 * this is a controller exactly.
2314 * Physical Disk Record - one entry per device, so
2315 * leave plenty of space.
2316 * Virtual Disk Records - again, just leave plenty of space.
2317 * This just lists VDs, doesn't give details.
2318 * Config records - describe the VDs that use this disk
2319 * DiskData - describes 'this' device.
2320 * BadBlockManagement - empty
2321 * Diag Space - empty
2322 * Vendor Logs - Could we put bitmaps here?
2325 struct ddf_super
*ddf
;
2328 int max_phys_disks
, max_virt_disks
;
2329 unsigned long long sector
;
2333 struct phys_disk
*pd
;
2334 struct virtual_disk
*vd
;
2336 if (data_offset
!= INVALID_SECTORS
) {
2337 pr_err("data-offset not supported by DDF\n");
2342 return init_super_ddf_bvd(st
, info
, size
, name
, homehost
, uuid
,
2345 if (posix_memalign((void**)&ddf
, 512, sizeof(*ddf
)) != 0) {
2346 pr_err("%s could not allocate superblock\n", __func__
);
2349 memset(ddf
, 0, sizeof(*ddf
));
2353 /* zeroing superblock */
2357 /* At least 32MB *must* be reserved for the ddf. So let's just
2358 * start 32MB from the end, and put the primary header there.
2359 * Don't do secondary for now.
2360 * We don't know exactly where that will be yet as it could be
2361 * different on each device. So just set up the lengths.
2364 ddf
->anchor
.magic
= DDF_HEADER_MAGIC
;
2365 make_header_guid(ddf
->anchor
.guid
);
2367 memcpy(ddf
->anchor
.revision
, DDF_REVISION_2
, 8);
2368 ddf
->anchor
.seq
= cpu_to_be32(1);
2369 ddf
->anchor
.timestamp
= cpu_to_be32(time(0) - DECADE
);
2370 ddf
->anchor
.openflag
= 0xFF;
2371 ddf
->anchor
.foreignflag
= 0;
2372 ddf
->anchor
.enforcegroups
= 0; /* Is this best?? */
2373 ddf
->anchor
.pad0
= 0xff;
2374 memset(ddf
->anchor
.pad1
, 0xff, 12);
2375 memset(ddf
->anchor
.header_ext
, 0xff, 32);
2376 ddf
->anchor
.primary_lba
= cpu_to_be64(~(__u64
)0);
2377 ddf
->anchor
.secondary_lba
= cpu_to_be64(~(__u64
)0);
2378 ddf
->anchor
.type
= DDF_HEADER_ANCHOR
;
2379 memset(ddf
->anchor
.pad2
, 0xff, 3);
2380 ddf
->anchor
.workspace_len
= cpu_to_be32(32768); /* Must be reserved */
2381 /* Put this at bottom of 32M reserved.. */
2382 ddf
->anchor
.workspace_lba
= cpu_to_be64(~(__u64
)0);
2383 max_phys_disks
= 1023; /* Should be enough, 4095 is also allowed */
2384 ddf
->anchor
.max_pd_entries
= cpu_to_be16(max_phys_disks
);
2385 max_virt_disks
= 255; /* 15, 63, 255, 1024, 4095 are all allowed */
2386 ddf
->anchor
.max_vd_entries
= cpu_to_be16(max_virt_disks
);
2388 ddf
->anchor
.max_partitions
= cpu_to_be16(ddf
->max_part
);
2389 ddf
->mppe
= 256; /* 16, 64, 256, 1024, 4096 are all allowed */
2390 ddf
->conf_rec_len
= 1 + ROUND_UP(ddf
->mppe
* (4+8), 512)/512;
2391 ddf
->anchor
.config_record_len
= cpu_to_be16(ddf
->conf_rec_len
);
2392 ddf
->anchor
.max_primary_element_entries
= cpu_to_be16(ddf
->mppe
);
2393 memset(ddf
->anchor
.pad3
, 0xff, 54);
2394 /* Controller section is one sector long immediately
2395 * after the ddf header */
2397 ddf
->anchor
.controller_section_offset
= cpu_to_be32(sector
);
2398 ddf
->anchor
.controller_section_length
= cpu_to_be32(1);
2401 /* phys is 8 sectors after that */
2402 pdsize
= ROUND_UP(sizeof(struct phys_disk
) +
2403 sizeof(struct phys_disk_entry
)*max_phys_disks
,
2405 switch(pdsize
/512) {
2406 case 2: case 8: case 32: case 128: case 512: break;
2409 ddf
->anchor
.phys_section_offset
= cpu_to_be32(sector
);
2410 ddf
->anchor
.phys_section_length
=
2411 cpu_to_be32(pdsize
/512); /* max_primary_element_entries/8 */
2412 sector
+= pdsize
/512;
2414 /* virt is another 32 sectors */
2415 vdsize
= ROUND_UP(sizeof(struct virtual_disk
) +
2416 sizeof(struct virtual_entry
) * max_virt_disks
,
2418 switch(vdsize
/512) {
2419 case 2: case 8: case 32: case 128: case 512: break;
2422 ddf
->anchor
.virt_section_offset
= cpu_to_be32(sector
);
2423 ddf
->anchor
.virt_section_length
=
2424 cpu_to_be32(vdsize
/512); /* max_vd_entries/8 */
2425 sector
+= vdsize
/512;
2427 clen
= ddf
->conf_rec_len
* (ddf
->max_part
+1);
2428 ddf
->anchor
.config_section_offset
= cpu_to_be32(sector
);
2429 ddf
->anchor
.config_section_length
= cpu_to_be32(clen
);
2432 ddf
->anchor
.data_section_offset
= cpu_to_be32(sector
);
2433 ddf
->anchor
.data_section_length
= cpu_to_be32(1);
2436 ddf
->anchor
.bbm_section_length
= cpu_to_be32(0);
2437 ddf
->anchor
.bbm_section_offset
= cpu_to_be32(0xFFFFFFFF);
2438 ddf
->anchor
.diag_space_length
= cpu_to_be32(0);
2439 ddf
->anchor
.diag_space_offset
= cpu_to_be32(0xFFFFFFFF);
2440 ddf
->anchor
.vendor_length
= cpu_to_be32(0);
2441 ddf
->anchor
.vendor_offset
= cpu_to_be32(0xFFFFFFFF);
2443 memset(ddf
->anchor
.pad4
, 0xff, 256);
2445 memcpy(&ddf
->primary
, &ddf
->anchor
, 512);
2446 memcpy(&ddf
->secondary
, &ddf
->anchor
, 512);
2448 ddf
->primary
.openflag
= 1; /* I guess.. */
2449 ddf
->primary
.type
= DDF_HEADER_PRIMARY
;
2451 ddf
->secondary
.openflag
= 1; /* I guess.. */
2452 ddf
->secondary
.type
= DDF_HEADER_SECONDARY
;
2454 ddf
->active
= &ddf
->primary
;
2456 ddf
->controller
.magic
= DDF_CONTROLLER_MAGIC
;
2458 /* 24 more bytes of fiction required.
2459 * first 8 are a 'vendor-id' - "Linux-MD"
2460 * Remaining 16 are serial number.... maybe a hostname would do?
2462 memcpy(ddf
->controller
.guid
, T10
, sizeof(T10
));
2463 gethostname(hostname
, sizeof(hostname
));
2464 hostname
[sizeof(hostname
) - 1] = 0;
2465 hostlen
= strlen(hostname
);
2466 memcpy(ddf
->controller
.guid
+ 24 - hostlen
, hostname
, hostlen
);
2467 for (i
= strlen(T10
) ; i
+hostlen
< 24; i
++)
2468 ddf
->controller
.guid
[i
] = ' ';
2470 ddf
->controller
.type
.vendor_id
= cpu_to_be16(0xDEAD);
2471 ddf
->controller
.type
.device_id
= cpu_to_be16(0xBEEF);
2472 ddf
->controller
.type
.sub_vendor_id
= cpu_to_be16(0);
2473 ddf
->controller
.type
.sub_device_id
= cpu_to_be16(0);
2474 memcpy(ddf
->controller
.product_id
, "What Is My PID??", 16);
2475 memset(ddf
->controller
.pad
, 0xff, 8);
2476 memset(ddf
->controller
.vendor_data
, 0xff, 448);
2477 if (homehost
&& strlen(homehost
) < 440)
2478 strcpy((char*)ddf
->controller
.vendor_data
, homehost
);
2480 if (posix_memalign((void**)&pd
, 512, pdsize
) != 0) {
2481 pr_err("%s could not allocate pd\n", __func__
);
2485 ddf
->pdsize
= pdsize
;
2487 memset(pd
, 0xff, pdsize
);
2488 memset(pd
, 0, sizeof(*pd
));
2489 pd
->magic
= DDF_PHYS_RECORDS_MAGIC
;
2490 pd
->used_pdes
= cpu_to_be16(0);
2491 pd
->max_pdes
= cpu_to_be16(max_phys_disks
);
2492 memset(pd
->pad
, 0xff, 52);
2493 for (i
= 0; i
< max_phys_disks
; i
++)
2494 memset(pd
->entries
[i
].guid
, 0xff, DDF_GUID_LEN
);
2496 if (posix_memalign((void**)&vd
, 512, vdsize
) != 0) {
2497 pr_err("%s could not allocate vd\n", __func__
);
2501 ddf
->vdsize
= vdsize
;
2502 memset(vd
, 0, vdsize
);
2503 vd
->magic
= DDF_VIRT_RECORDS_MAGIC
;
2504 vd
->populated_vdes
= cpu_to_be16(0);
2505 vd
->max_vdes
= cpu_to_be16(max_virt_disks
);
2506 memset(vd
->pad
, 0xff, 52);
2508 for (i
=0; i
<max_virt_disks
; i
++)
2509 memset(&vd
->entries
[i
], 0xff, sizeof(struct virtual_entry
));
2512 ddf_set_updates_pending(ddf
, NULL
);
2516 static int chunk_to_shift(int chunksize
)
2518 return ffs(chunksize
/512)-1;
2523 unsigned long long start
, size
;
2525 static int cmp_extent(const void *av
, const void *bv
)
2527 const struct extent
*a
= av
;
2528 const struct extent
*b
= bv
;
2529 if (a
->start
< b
->start
)
2531 if (a
->start
> b
->start
)
2536 static struct extent
*get_extents(struct ddf_super
*ddf
, struct dl
*dl
)
2538 /* Find a list of used extents on the give physical device
2539 * (dnum) of the given ddf.
2540 * Return a malloced array of 'struct extent'
2549 state
= be16_to_cpu(ddf
->phys
->entries
[dl
->pdnum
].state
);
2551 if ((state
& (DDF_Online
|DDF_Failed
|DDF_Missing
)) != DDF_Online
)
2554 rv
= xmalloc(sizeof(struct extent
) * (ddf
->max_part
+ 2));
2556 for (i
= 0; i
< ddf
->max_part
; i
++) {
2557 const struct vd_config
*bvd
;
2559 struct vcl
*v
= dl
->vlist
[i
];
2561 get_pd_index_from_refnum(v
, dl
->disk
.refnum
, ddf
->mppe
,
2562 &bvd
, &ibvd
) == DDF_NOTFOUND
)
2564 rv
[n
].start
= be64_to_cpu(LBA_OFFSET(ddf
, bvd
)[ibvd
]);
2565 rv
[n
].size
= be64_to_cpu(bvd
->blocks
);
2568 qsort(rv
, n
, sizeof(*rv
), cmp_extent
);
2570 rv
[n
].start
= be64_to_cpu(ddf
->phys
->entries
[dl
->pdnum
].config_size
);
2576 static int init_super_ddf_bvd(struct supertype
*st
,
2577 mdu_array_info_t
*info
,
2578 unsigned long long size
,
2579 char *name
, char *homehost
,
2580 int *uuid
, unsigned long long data_offset
)
2582 /* We are creating a BVD inside a pre-existing container.
2583 * so st->sb is already set.
2584 * We need to create a new vd_config and a new virtual_entry
2586 struct ddf_super
*ddf
= st
->sb
;
2587 unsigned int venum
, i
;
2588 struct virtual_entry
*ve
;
2590 struct vd_config
*vc
;
2592 if (find_vde_by_name(ddf
, name
) != DDF_NOTFOUND
) {
2593 pr_err("This ddf already has an array called %s\n", name
);
2596 venum
= find_unused_vde(ddf
);
2597 if (venum
== DDF_NOTFOUND
) {
2598 pr_err("Cannot find spare slot for virtual disk\n");
2601 ve
= &ddf
->virt
->entries
[venum
];
2603 /* A Virtual Disk GUID contains the T10 Vendor ID, controller type,
2604 * timestamp, random number
2606 make_header_guid(ve
->guid
);
2607 ve
->unit
= cpu_to_be16(info
->md_minor
);
2609 ve
->guid_crc
._v16
= crc32(0, (unsigned char *)ddf
->anchor
.guid
,
2611 ve
->type
= cpu_to_be16(0);
2612 ve
->state
= DDF_state_degraded
; /* Will be modified as devices are added */
2613 if (info
->state
& 1) /* clean */
2614 ve
->init_state
= DDF_init_full
;
2616 ve
->init_state
= DDF_init_not
;
2618 memset(ve
->pad1
, 0xff, 14);
2619 memset(ve
->name
, ' ', 16);
2621 strncpy(ve
->name
, name
, 16);
2622 ddf
->virt
->populated_vdes
=
2623 cpu_to_be16(be16_to_cpu(ddf
->virt
->populated_vdes
)+1);
2625 /* Now create a new vd_config */
2626 if (posix_memalign((void**)&vcl
, 512,
2627 (offsetof(struct vcl
, conf
) + ddf
->conf_rec_len
* 512)) != 0) {
2628 pr_err("%s could not allocate vd_config\n", __func__
);
2632 vcl
->block_sizes
= NULL
; /* FIXME not for CONCAT */
2635 vc
->magic
= DDF_VD_CONF_MAGIC
;
2636 memcpy(vc
->guid
, ve
->guid
, DDF_GUID_LEN
);
2637 vc
->timestamp
= cpu_to_be32(time(0)-DECADE
);
2638 vc
->seqnum
= cpu_to_be32(1);
2639 memset(vc
->pad0
, 0xff, 24);
2640 vc
->chunk_shift
= chunk_to_shift(info
->chunk_size
);
2641 if (layout_md2ddf(info
, vc
) == -1 ||
2642 be16_to_cpu(vc
->prim_elmnt_count
) > ddf
->mppe
) {
2643 pr_err("%s: unsupported RAID level/layout %d/%d with %d disks\n",
2644 __func__
, info
->level
, info
->layout
, info
->raid_disks
);
2648 vc
->sec_elmnt_seq
= 0;
2649 if (alloc_other_bvds(ddf
, vcl
) != 0) {
2650 pr_err("%s could not allocate other bvds\n",
2655 vc
->blocks
= cpu_to_be64(info
->size
* 2);
2656 vc
->array_blocks
= cpu_to_be64(
2657 calc_array_size(info
->level
, info
->raid_disks
, info
->layout
,
2658 info
->chunk_size
, info
->size
*2));
2659 memset(vc
->pad1
, 0xff, 8);
2660 vc
->spare_refs
[0] = cpu_to_be32(0xffffffff);
2661 vc
->spare_refs
[1] = cpu_to_be32(0xffffffff);
2662 vc
->spare_refs
[2] = cpu_to_be32(0xffffffff);
2663 vc
->spare_refs
[3] = cpu_to_be32(0xffffffff);
2664 vc
->spare_refs
[4] = cpu_to_be32(0xffffffff);
2665 vc
->spare_refs
[5] = cpu_to_be32(0xffffffff);
2666 vc
->spare_refs
[6] = cpu_to_be32(0xffffffff);
2667 vc
->spare_refs
[7] = cpu_to_be32(0xffffffff);
2668 memset(vc
->cache_pol
, 0, 8);
2670 memset(vc
->pad2
, 0xff, 3);
2671 memset(vc
->pad3
, 0xff, 52);
2672 memset(vc
->pad4
, 0xff, 192);
2673 memset(vc
->v0
, 0xff, 32);
2674 memset(vc
->v1
, 0xff, 32);
2675 memset(vc
->v2
, 0xff, 16);
2676 memset(vc
->v3
, 0xff, 16);
2677 memset(vc
->vendor
, 0xff, 32);
2679 memset(vc
->phys_refnum
, 0xff, 4*ddf
->mppe
);
2680 memset(vc
->phys_refnum
+ddf
->mppe
, 0x00, 8*ddf
->mppe
);
2682 for (i
= 1; i
< vc
->sec_elmnt_count
; i
++) {
2683 memcpy(vcl
->other_bvds
[i
-1], vc
, ddf
->conf_rec_len
* 512);
2684 vcl
->other_bvds
[i
-1]->sec_elmnt_seq
= i
;
2687 vcl
->next
= ddf
->conflist
;
2688 ddf
->conflist
= vcl
;
2689 ddf
->currentconf
= vcl
;
2690 ddf_set_updates_pending(ddf
, NULL
);
2695 static void add_to_super_ddf_bvd(struct supertype
*st
,
2696 mdu_disk_info_t
*dk
, int fd
, char *devname
)
2698 /* fd and devname identify a device within the ddf container (st).
2699 * dk identifies a location in the new BVD.
2700 * We need to find suitable free space in that device and update
2701 * the phys_refnum and lba_offset for the newly created vd_config.
2702 * We might also want to update the type in the phys_disk
2705 * Alternately: fd == -1 and we have already chosen which device to
2706 * use and recorded in dlist->raid_disk;
2709 struct ddf_super
*ddf
= st
->sb
;
2710 struct vd_config
*vc
;
2712 unsigned long long blocks
, pos
, esize
;
2714 unsigned int raid_disk
= dk
->raid_disk
;
2717 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
2718 if (dl
->raiddisk
== dk
->raid_disk
)
2721 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
2722 if (dl
->major
== dk
->major
&&
2723 dl
->minor
== dk
->minor
)
2726 if (!dl
|| dl
->pdnum
< 0 || ! (dk
->state
& (1<<MD_DISK_SYNC
)))
2729 vc
= &ddf
->currentconf
->conf
;
2730 if (vc
->sec_elmnt_count
> 1) {
2731 unsigned int n
= be16_to_cpu(vc
->prim_elmnt_count
);
2733 vc
= ddf
->currentconf
->other_bvds
[raid_disk
/ n
- 1];
2737 ex
= get_extents(ddf
, dl
);
2742 blocks
= be64_to_cpu(vc
->blocks
);
2743 if (ddf
->currentconf
->block_sizes
)
2744 blocks
= ddf
->currentconf
->block_sizes
[dk
->raid_disk
];
2748 esize
= ex
[i
].start
- pos
;
2749 if (esize
>= blocks
)
2751 pos
= ex
[i
].start
+ ex
[i
].size
;
2753 } while (ex
[i
-1].size
);
2759 ddf
->currentdev
= dk
->raid_disk
;
2760 vc
->phys_refnum
[raid_disk
] = dl
->disk
.refnum
;
2761 LBA_OFFSET(ddf
, vc
)[raid_disk
] = cpu_to_be64(pos
);
2763 for (i
= 0; i
< ddf
->max_part
; i
++)
2764 if (dl
->vlist
[i
] == NULL
)
2766 if (i
== ddf
->max_part
)
2768 dl
->vlist
[i
] = ddf
->currentconf
;
2773 dl
->devname
= devname
;
2775 /* Check if we can mark array as optimal yet */
2776 i
= ddf
->currentconf
->vcnum
;
2777 ddf
->virt
->entries
[i
].state
=
2778 (ddf
->virt
->entries
[i
].state
& ~DDF_state_mask
)
2779 | get_svd_state(ddf
, ddf
->currentconf
);
2780 be16_clear(ddf
->phys
->entries
[dl
->pdnum
].type
,
2781 cpu_to_be16(DDF_Global_Spare
));
2782 be16_set(ddf
->phys
->entries
[dl
->pdnum
].type
,
2783 cpu_to_be16(DDF_Active_in_VD
));
2784 dprintf("%s: added disk %d/%08x to VD %d/%s as disk %d\n",
2785 __func__
, dl
->pdnum
, be32_to_cpu(dl
->disk
.refnum
),
2786 ddf
->currentconf
->vcnum
, guid_str(vc
->guid
),
2788 ddf_set_updates_pending(ddf
, vc
);
2791 static unsigned int find_unused_pde(const struct ddf_super
*ddf
)
2794 for (i
= 0; i
< be16_to_cpu(ddf
->phys
->max_pdes
); i
++) {
2795 if (all_ff(ddf
->phys
->entries
[i
].guid
))
2798 return DDF_NOTFOUND
;
2801 static void _set_config_size(struct phys_disk_entry
*pde
, const struct dl
*dl
)
2804 cfs
= min(dl
->size
- 32*1024*2ULL, be64_to_cpu(dl
->primary_lba
));
2805 t
= be64_to_cpu(dl
->secondary_lba
);
2809 * Some vendor DDF structures interpret workspace_lba
2810 * very differently than we do: Make a sanity check on the value.
2812 t
= be64_to_cpu(dl
->workspace_lba
);
2814 __u64 wsp
= cfs
- t
;
2815 if (wsp
> 1024*1024*2ULL && wsp
> dl
->size
/ 16) {
2816 pr_err("%s: %x:%x: workspace size 0x%llx too big, ignoring\n",
2817 __func__
, dl
->major
, dl
->minor
, wsp
);
2821 pde
->config_size
= cpu_to_be64(cfs
);
2822 dprintf("%s: %x:%x config_size %llx, DDF structure is %llx blocks\n",
2823 __func__
, dl
->major
, dl
->minor
, cfs
, dl
->size
-cfs
);
2826 /* Add a device to a container, either while creating it or while
2827 * expanding a pre-existing container
2829 static int add_to_super_ddf(struct supertype
*st
,
2830 mdu_disk_info_t
*dk
, int fd
, char *devname
,
2831 unsigned long long data_offset
)
2833 struct ddf_super
*ddf
= st
->sb
;
2837 unsigned long long size
;
2838 struct phys_disk_entry
*pde
;
2843 if (ddf
->currentconf
) {
2844 add_to_super_ddf_bvd(st
, dk
, fd
, devname
);
2848 /* This is device numbered dk->number. We need to create
2849 * a phys_disk entry and a more detailed disk_data entry.
2852 n
= find_unused_pde(ddf
);
2853 if (n
== DDF_NOTFOUND
) {
2854 pr_err("%s: No free slot in array, cannot add disk\n",
2858 pde
= &ddf
->phys
->entries
[n
];
2859 get_dev_size(fd
, NULL
, &size
);
2860 if (size
<= 32*1024*1024) {
2861 pr_err("%s: device size must be at least 32MB\n",
2867 if (posix_memalign((void**)&dd
, 512,
2868 sizeof(*dd
) + sizeof(dd
->vlist
[0]) * ddf
->max_part
) != 0) {
2869 pr_err("%s could allocate buffer for new disk, aborting\n",
2873 dd
->major
= major(stb
.st_rdev
);
2874 dd
->minor
= minor(stb
.st_rdev
);
2875 dd
->devname
= devname
;
2879 dd
->disk
.magic
= DDF_PHYS_DATA_MAGIC
;
2881 tm
= localtime(&now
);
2882 sprintf(dd
->disk
.guid
, "%8s%04d%02d%02d",
2883 T10
, tm
->tm_year
+1900, tm
->tm_mon
+1, tm
->tm_mday
);
2884 tptr
= (__u32
*)(dd
->disk
.guid
+ 16);
2885 *tptr
++ = random32();
2889 /* Cannot be bothered finding a CRC of some irrelevant details*/
2890 dd
->disk
.refnum
._v32
= random32();
2891 for (i
= be16_to_cpu(ddf
->active
->max_pd_entries
);
2893 if (be32_eq(ddf
->phys
->entries
[i
-1].refnum
,
2898 dd
->disk
.forced_ref
= 1;
2899 dd
->disk
.forced_guid
= 1;
2900 memset(dd
->disk
.vendor
, ' ', 32);
2901 memcpy(dd
->disk
.vendor
, "Linux", 5);
2902 memset(dd
->disk
.pad
, 0xff, 442);
2903 for (i
= 0; i
< ddf
->max_part
; i
++)
2904 dd
->vlist
[i
] = NULL
;
2908 if (st
->update_tail
) {
2909 int len
= (sizeof(struct phys_disk
) +
2910 sizeof(struct phys_disk_entry
));
2911 struct phys_disk
*pd
;
2914 pd
->magic
= DDF_PHYS_RECORDS_MAGIC
;
2915 pd
->used_pdes
= cpu_to_be16(n
);
2916 pde
= &pd
->entries
[0];
2919 ddf
->phys
->used_pdes
= cpu_to_be16(
2920 1 + be16_to_cpu(ddf
->phys
->used_pdes
));
2922 memcpy(pde
->guid
, dd
->disk
.guid
, DDF_GUID_LEN
);
2923 pde
->refnum
= dd
->disk
.refnum
;
2924 pde
->type
= cpu_to_be16(DDF_Forced_PD_GUID
| DDF_Global_Spare
);
2925 pde
->state
= cpu_to_be16(DDF_Online
);
2928 * If there is already a device in dlist, try to reserve the same
2929 * amount of workspace. Otherwise, use 32MB.
2930 * We checked disk size above already.
2932 #define __calc_lba(new, old, lba, mb) do { \
2933 unsigned long long dif; \
2934 if ((old) != NULL) \
2935 dif = (old)->size - be64_to_cpu((old)->lba); \
2937 dif = (new)->size; \
2938 if ((new)->size > dif) \
2939 (new)->lba = cpu_to_be64((new)->size - dif); \
2941 (new)->lba = cpu_to_be64((new)->size - (mb*1024*2)); \
2943 __calc_lba(dd
, ddf
->dlist
, workspace_lba
, 32);
2944 __calc_lba(dd
, ddf
->dlist
, primary_lba
, 16);
2945 if (ddf
->dlist
== NULL
||
2946 be64_to_cpu(ddf
->dlist
->secondary_lba
) != ~(__u64
)0)
2947 __calc_lba(dd
, ddf
->dlist
, secondary_lba
, 32);
2948 _set_config_size(pde
, dd
);
2950 sprintf(pde
->path
, "%17.17s","Information: nil") ;
2951 memset(pde
->pad
, 0xff, 6);
2953 if (st
->update_tail
) {
2954 dd
->next
= ddf
->add_list
;
2957 dd
->next
= ddf
->dlist
;
2959 ddf_set_updates_pending(ddf
, NULL
);
2965 static int remove_from_super_ddf(struct supertype
*st
, mdu_disk_info_t
*dk
)
2967 struct ddf_super
*ddf
= st
->sb
;
2970 /* mdmon has noticed that this disk (dk->major/dk->minor) has
2971 * disappeared from the container.
2972 * We need to arrange that it disappears from the metadata and
2973 * internal data structures too.
2974 * Most of the work is done by ddf_process_update which edits
2975 * the metadata and closes the file handle and attaches the memory
2976 * where free_updates will free it.
2978 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
2979 if (dl
->major
== dk
->major
&&
2980 dl
->minor
== dk
->minor
)
2982 if (!dl
|| dl
->pdnum
< 0)
2985 if (st
->update_tail
) {
2986 int len
= (sizeof(struct phys_disk
) +
2987 sizeof(struct phys_disk_entry
));
2988 struct phys_disk
*pd
;
2991 pd
->magic
= DDF_PHYS_RECORDS_MAGIC
;
2992 pd
->used_pdes
= cpu_to_be16(dl
->pdnum
);
2993 pd
->entries
[0].state
= cpu_to_be16(DDF_Missing
);
2994 append_metadata_update(st
, pd
, len
);
3001 * This is the write_init_super method for a ddf container. It is
3002 * called when creating a container or adding another device to a
3006 static int __write_ddf_structure(struct dl
*d
, struct ddf_super
*ddf
, __u8 type
)
3008 unsigned long long sector
;
3009 struct ddf_header
*header
;
3010 int fd
, i
, n_config
, conf_size
, buf_size
;
3017 case DDF_HEADER_PRIMARY
:
3018 header
= &ddf
->primary
;
3019 sector
= be64_to_cpu(header
->primary_lba
);
3021 case DDF_HEADER_SECONDARY
:
3022 header
= &ddf
->secondary
;
3023 sector
= be64_to_cpu(header
->secondary_lba
);
3028 if (sector
== ~(__u64
)0)
3031 header
->type
= type
;
3032 header
->openflag
= 1;
3033 header
->crc
= calc_crc(header
, 512);
3035 lseek64(fd
, sector
<<9, 0);
3036 if (write(fd
, header
, 512) < 0)
3039 ddf
->controller
.crc
= calc_crc(&ddf
->controller
, 512);
3040 if (write(fd
, &ddf
->controller
, 512) < 0)
3043 ddf
->phys
->crc
= calc_crc(ddf
->phys
, ddf
->pdsize
);
3044 if (write(fd
, ddf
->phys
, ddf
->pdsize
) < 0)
3046 ddf
->virt
->crc
= calc_crc(ddf
->virt
, ddf
->vdsize
);
3047 if (write(fd
, ddf
->virt
, ddf
->vdsize
) < 0)
3050 /* Now write lots of config records. */
3051 n_config
= ddf
->max_part
;
3052 conf_size
= ddf
->conf_rec_len
* 512;
3054 buf_size
= conf_size
* (n_config
+ 1);
3056 if (posix_memalign((void**)&conf
, 512, buf_size
) != 0)
3060 for (i
= 0 ; i
<= n_config
; i
++) {
3062 struct vd_config
*vdc
= NULL
;
3063 if (i
== n_config
) {
3064 c
= (struct vcl
*)d
->spare
;
3071 get_pd_index_from_refnum(
3074 (const struct vd_config
**)&vdc
,
3078 dprintf("writing conf record %i on disk %08x for %s/%u\n",
3079 i
, be32_to_cpu(d
->disk
.refnum
),
3080 guid_str(vdc
->guid
),
3081 vdc
->sec_elmnt_seq
);
3082 vdc
->crc
= calc_crc(vdc
, conf_size
);
3083 memcpy(conf
+ i
*conf_size
, vdc
, conf_size
);
3085 memset(conf
+ i
*conf_size
, 0xff, conf_size
);
3087 if (write(fd
, conf
, buf_size
) != buf_size
)
3090 d
->disk
.crc
= calc_crc(&d
->disk
, 512);
3091 if (write(fd
, &d
->disk
, 512) < 0)
3096 header
->openflag
= 0;
3097 header
->crc
= calc_crc(header
, 512);
3099 lseek64(fd
, sector
<<9, 0);
3100 if (write(fd
, header
, 512) < 0)
3106 static int _write_super_to_disk(struct ddf_super
*ddf
, struct dl
*d
)
3108 unsigned long long size
;
3113 /* We need to fill in the primary, (secondary) and workspace
3114 * lba's in the headers, set their checksums,
3115 * Also checksum phys, virt....
3117 * Then write everything out, finally the anchor is written.
3119 get_dev_size(fd
, NULL
, &size
);
3121 memcpy(&ddf
->anchor
, ddf
->active
, 512);
3122 if (be64_to_cpu(d
->workspace_lba
) != 0ULL)
3123 ddf
->anchor
.workspace_lba
= d
->workspace_lba
;
3125 ddf
->anchor
.workspace_lba
=
3126 cpu_to_be64(size
- 32*1024*2);
3127 if (be64_to_cpu(d
->primary_lba
) != 0ULL)
3128 ddf
->anchor
.primary_lba
= d
->primary_lba
;
3130 ddf
->anchor
.primary_lba
=
3131 cpu_to_be64(size
- 16*1024*2);
3132 if (be64_to_cpu(d
->secondary_lba
) != 0ULL)
3133 ddf
->anchor
.secondary_lba
= d
->secondary_lba
;
3135 ddf
->anchor
.secondary_lba
=
3136 cpu_to_be64(size
- 32*1024*2);
3137 ddf
->anchor
.timestamp
= cpu_to_be32(time(0) - DECADE
);
3138 memcpy(&ddf
->primary
, &ddf
->anchor
, 512);
3139 memcpy(&ddf
->secondary
, &ddf
->anchor
, 512);
3141 ddf
->anchor
.openflag
= 0xFF; /* 'open' means nothing */
3142 ddf
->anchor
.seq
= cpu_to_be32(0xFFFFFFFF); /* no sequencing in anchor */
3143 ddf
->anchor
.crc
= calc_crc(&ddf
->anchor
, 512);
3145 if (!__write_ddf_structure(d
, ddf
, DDF_HEADER_PRIMARY
))
3148 if (!__write_ddf_structure(d
, ddf
, DDF_HEADER_SECONDARY
))
3151 lseek64(fd
, (size
-1)*512, SEEK_SET
);
3152 if (write(fd
, &ddf
->anchor
, 512) < 0)
3159 static int __write_init_super_ddf(struct supertype
*st
)
3161 struct ddf_super
*ddf
= st
->sb
;
3166 pr_state(ddf
, __func__
);
3168 /* try to write updated metadata,
3169 * if we catch a failure move on to the next disk
3171 for (d
= ddf
->dlist
; d
; d
=d
->next
) {
3173 successes
+= _write_super_to_disk(ddf
, d
);
3176 return attempts
!= successes
;
3179 static int write_init_super_ddf(struct supertype
*st
)
3181 struct ddf_super
*ddf
= st
->sb
;
3182 struct vcl
*currentconf
= ddf
->currentconf
;
3184 /* We are done with currentconf - reset it so st refers to the container */
3185 ddf
->currentconf
= NULL
;
3187 if (st
->update_tail
) {
3188 /* queue the virtual_disk and vd_config as metadata updates */
3189 struct virtual_disk
*vd
;
3190 struct vd_config
*vc
;
3195 /* Must be adding a physical disk to the container */
3196 int len
= (sizeof(struct phys_disk
) +
3197 sizeof(struct phys_disk_entry
));
3199 /* adding a disk to the container. */
3203 append_metadata_update(st
, ddf
->add_list
->mdupdate
, len
);
3204 ddf
->add_list
->mdupdate
= NULL
;
3208 /* Newly created VD */
3210 /* First the virtual disk. We have a slightly fake header */
3211 len
= sizeof(struct virtual_disk
) + sizeof(struct virtual_entry
);
3214 vd
->entries
[0] = ddf
->virt
->entries
[currentconf
->vcnum
];
3215 vd
->populated_vdes
= cpu_to_be16(currentconf
->vcnum
);
3216 append_metadata_update(st
, vd
, len
);
3218 /* Then the vd_config */
3219 len
= ddf
->conf_rec_len
* 512;
3220 tlen
= len
* currentconf
->conf
.sec_elmnt_count
;
3222 memcpy(vc
, ¤tconf
->conf
, len
);
3223 for (i
= 1; i
< currentconf
->conf
.sec_elmnt_count
; i
++)
3224 memcpy((char *)vc
+ i
*len
, currentconf
->other_bvds
[i
-1],
3226 append_metadata_update(st
, vc
, tlen
);
3228 /* FIXME I need to close the fds! */
3233 for (d
= ddf
->dlist
; d
; d
=d
->next
)
3234 while (Kill(d
->devname
, NULL
, 0, -1, 1) == 0);
3235 return __write_init_super_ddf(st
);
3241 static __u64
avail_size_ddf(struct supertype
*st
, __u64 devsize
,
3242 unsigned long long data_offset
)
3244 /* We must reserve the last 32Meg */
3245 if (devsize
<= 32*1024*2)
3247 return devsize
- 32*1024*2;
3252 static int reserve_space(struct supertype
*st
, int raiddisks
,
3253 unsigned long long size
, int chunk
,
3254 unsigned long long *freesize
)
3256 /* Find 'raiddisks' spare extents at least 'size' big (but
3257 * only caring about multiples of 'chunk') and remember
3258 * them. If size==0, find the largest size possible.
3259 * Report available size in *freesize
3260 * If space cannot be found, fail.
3263 struct ddf_super
*ddf
= st
->sb
;
3266 for (dl
= ddf
->dlist
; dl
; dl
=dl
->next
) {
3270 /* Now find largest extent on each device */
3271 for (dl
= ddf
->dlist
; dl
; dl
=dl
->next
) {
3272 struct extent
*e
= get_extents(ddf
, dl
);
3273 unsigned long long pos
= 0;
3276 unsigned long long minsize
= size
;
3284 unsigned long long esize
;
3285 esize
= e
[i
].start
- pos
;
3286 if (esize
>= minsize
) {
3290 pos
= e
[i
].start
+ e
[i
].size
;
3292 } while (e
[i
-1].size
);
3295 dl
->esize
= minsize
;
3299 if (cnt
< raiddisks
) {
3300 pr_err("not enough devices with space to create array.\n");
3301 return 0; /* No enough free spaces large enough */
3304 /* choose the largest size of which there are at least 'raiddisk' */
3305 for (dl
= ddf
->dlist
; dl
; dl
=dl
->next
) {
3307 if (dl
->esize
<= size
)
3309 /* This is bigger than 'size', see if there are enough */
3311 for (dl2
= ddf
->dlist
; dl2
; dl2
=dl2
->next
)
3312 if (dl2
->esize
>= dl
->esize
)
3314 if (cnt
>= raiddisks
)
3318 size
= size
/ chunk
;
3323 pr_err("not enough spare devices to create array.\n");
3327 /* We have a 'size' of which there are enough spaces.
3328 * We simply do a first-fit */
3330 for (dl
= ddf
->dlist
; dl
&& cnt
< raiddisks
; dl
=dl
->next
) {
3331 if (dl
->esize
< size
)
3340 static int validate_geometry_ddf(struct supertype
*st
,
3341 int level
, int layout
, int raiddisks
,
3342 int *chunk
, unsigned long long size
,
3343 unsigned long long data_offset
,
3344 char *dev
, unsigned long long *freesize
,
3351 /* ddf potentially supports lots of things, but it depends on
3352 * what devices are offered (and maybe kernel version?)
3353 * If given unused devices, we will make a container.
3354 * If given devices in a container, we will make a BVD.
3355 * If given BVDs, we make an SVD, changing all the GUIDs in the process.
3358 if (*chunk
== UnSet
)
3359 *chunk
= DEFAULT_CHUNK
;
3361 if (level
== LEVEL_NONE
)
3362 level
= LEVEL_CONTAINER
;
3363 if (level
== LEVEL_CONTAINER
) {
3364 /* Must be a fresh device to add to a container */
3365 return validate_geometry_ddf_container(st
, level
, layout
,
3367 size
, data_offset
, dev
,
3373 mdu_array_info_t array
= {
3376 .raid_disks
= raiddisks
3378 struct vd_config conf
;
3379 if (layout_md2ddf(&array
, &conf
) == -1) {
3381 pr_err("DDF does not support level %d /layout %d arrays with %d disks\n",
3382 level
, layout
, raiddisks
);
3385 /* Should check layout? etc */
3387 if (st
->sb
&& freesize
) {
3388 /* --create was given a container to create in.
3389 * So we need to check that there are enough
3390 * free spaces and return the amount of space.
3391 * We may as well remember which drives were
3392 * chosen so that add_to_super/getinfo_super
3395 return reserve_space(st
, raiddisks
, size
, *chunk
, freesize
);
3401 /* A container has already been opened, so we are
3402 * creating in there. Maybe a BVD, maybe an SVD.
3403 * Should make a distinction one day.
3405 return validate_geometry_ddf_bvd(st
, level
, layout
, raiddisks
,
3406 chunk
, size
, data_offset
, dev
,
3410 /* This is the first device for the array.
3411 * If it is a container, we read it in and do automagic allocations,
3412 * no other devices should be given.
3413 * Otherwise it must be a member device of a container, and we
3414 * do manual allocation.
3415 * Later we should check for a BVD and make an SVD.
3417 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
3419 sra
= sysfs_read(fd
, NULL
, GET_VERSION
);
3421 if (sra
&& sra
->array
.major_version
== -1 &&
3422 strcmp(sra
->text_version
, "ddf") == 0) {
3424 /* find space for 'n' devices. */
3425 /* remember the devices */
3426 /* Somehow return the fact that we have enough */
3430 pr_err("ddf: Cannot create this array "
3431 "on device %s - a container is required.\n",
3435 if (errno
!= EBUSY
|| (fd
= open(dev
, O_RDONLY
, 0)) < 0) {
3437 pr_err("ddf: Cannot open %s: %s\n",
3438 dev
, strerror(errno
));
3441 /* Well, it is in use by someone, maybe a 'ddf' container. */
3442 cfd
= open_container(fd
);
3446 pr_err("ddf: Cannot use %s: %s\n",
3447 dev
, strerror(EBUSY
));
3450 sra
= sysfs_read(cfd
, NULL
, GET_VERSION
);
3452 if (sra
&& sra
->array
.major_version
== -1 &&
3453 strcmp(sra
->text_version
, "ddf") == 0) {
3454 /* This is a member of a ddf container. Load the container
3455 * and try to create a bvd
3457 struct ddf_super
*ddf
;
3458 if (load_super_ddf_all(st
, cfd
, (void **)&ddf
, NULL
) == 0) {
3460 strcpy(st
->container_devnm
, fd2devnm(cfd
));
3462 return validate_geometry_ddf_bvd(st
, level
, layout
,
3463 raiddisks
, chunk
, size
,
3469 } else /* device may belong to a different container */
3476 validate_geometry_ddf_container(struct supertype
*st
,
3477 int level
, int layout
, int raiddisks
,
3478 int chunk
, unsigned long long size
,
3479 unsigned long long data_offset
,
3480 char *dev
, unsigned long long *freesize
,
3484 unsigned long long ldsize
;
3486 if (level
!= LEVEL_CONTAINER
)
3491 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
3494 pr_err("ddf: Cannot open %s: %s\n",
3495 dev
, strerror(errno
));
3498 if (!get_dev_size(fd
, dev
, &ldsize
)) {
3504 *freesize
= avail_size_ddf(st
, ldsize
>> 9, INVALID_SECTORS
);
3511 static int validate_geometry_ddf_bvd(struct supertype
*st
,
3512 int level
, int layout
, int raiddisks
,
3513 int *chunk
, unsigned long long size
,
3514 unsigned long long data_offset
,
3515 char *dev
, unsigned long long *freesize
,
3519 struct ddf_super
*ddf
= st
->sb
;
3521 unsigned long long pos
= 0;
3522 unsigned long long maxsize
;
3525 /* ddf/bvd supports lots of things, but not containers */
3526 if (level
== LEVEL_CONTAINER
) {
3528 pr_err("DDF cannot create a container within an container\n");
3531 /* We must have the container info already read in. */
3536 /* General test: make sure there is space for
3537 * 'raiddisks' device extents of size 'size'.
3539 unsigned long long minsize
= size
;
3543 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
) {
3548 e
= get_extents(ddf
, dl
);
3551 unsigned long long esize
;
3552 esize
= e
[i
].start
- pos
;
3553 if (esize
>= minsize
)
3555 pos
= e
[i
].start
+ e
[i
].size
;
3557 } while (e
[i
-1].size
);
3562 if (dcnt
< raiddisks
) {
3564 pr_err("ddf: Not enough devices with "
3565 "space for this array (%d < %d)\n",
3571 /* This device must be a member of the set */
3572 if (stat(dev
, &stb
) < 0)
3574 if ((S_IFMT
& stb
.st_mode
) != S_IFBLK
)
3576 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
) {
3577 if (dl
->major
== (int)major(stb
.st_rdev
) &&
3578 dl
->minor
== (int)minor(stb
.st_rdev
))
3583 pr_err("ddf: %s is not in the "
3588 e
= get_extents(ddf
, dl
);
3593 unsigned long long esize
;
3594 esize
= e
[i
].start
- pos
;
3595 if (esize
>= maxsize
)
3597 pos
= e
[i
].start
+ e
[i
].size
;
3599 } while (e
[i
-1].size
);
3600 *freesize
= maxsize
;
3606 static int load_super_ddf_all(struct supertype
*st
, int fd
,
3607 void **sbp
, char *devname
)
3610 struct ddf_super
*super
;
3611 struct mdinfo
*sd
, *best
= NULL
;
3617 sra
= sysfs_read(fd
, 0, GET_LEVEL
|GET_VERSION
|GET_DEVS
|GET_STATE
);
3620 if (sra
->array
.major_version
!= -1 ||
3621 sra
->array
.minor_version
!= -2 ||
3622 strcmp(sra
->text_version
, "ddf") != 0)
3625 if (posix_memalign((void**)&super
, 512, sizeof(*super
)) != 0)
3627 memset(super
, 0, sizeof(*super
));
3629 /* first, try each device, and choose the best ddf */
3630 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
3632 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
3633 dfd
= dev_open(nm
, O_RDONLY
);
3636 rv
= load_ddf_headers(dfd
, super
, NULL
);
3639 seq
= be32_to_cpu(super
->active
->seq
);
3640 if (super
->active
->openflag
)
3642 if (!best
|| seq
> bestseq
) {
3650 /* OK, load this ddf */
3651 sprintf(nm
, "%d:%d", best
->disk
.major
, best
->disk
.minor
);
3652 dfd
= dev_open(nm
, O_RDONLY
);
3655 load_ddf_headers(dfd
, super
, NULL
);
3656 load_ddf_global(dfd
, super
, NULL
);
3658 /* Now we need the device-local bits */
3659 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
3662 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
3663 dfd
= dev_open(nm
, O_RDWR
);
3666 rv
= load_ddf_headers(dfd
, super
, NULL
);
3668 rv
= load_ddf_local(dfd
, super
, NULL
, 1);
3674 if (st
->ss
== NULL
) {
3675 st
->ss
= &super_ddf
;
3676 st
->minor_version
= 0;
3679 strcpy(st
->container_devnm
, fd2devnm(fd
));
3683 static int load_container_ddf(struct supertype
*st
, int fd
,
3686 return load_super_ddf_all(st
, fd
, &st
->sb
, devname
);
3689 #endif /* MDASSEMBLE */
3691 static int check_secondary(const struct vcl
*vc
)
3693 const struct vd_config
*conf
= &vc
->conf
;
3696 /* The only DDF secondary RAID level md can support is
3697 * RAID 10, if the stripe sizes and Basic volume sizes
3699 * Other configurations could in theory be supported by exposing
3700 * the BVDs to user space and using device mapper for the secondary
3701 * mapping. So far we don't support that.
3704 __u64 sec_elements
[4] = {0, 0, 0, 0};
3705 #define __set_sec_seen(n) (sec_elements[(n)>>6] |= (1<<((n)&63)))
3706 #define __was_sec_seen(n) ((sec_elements[(n)>>6] & (1<<((n)&63))) != 0)
3708 if (vc
->other_bvds
== NULL
) {
3709 pr_err("No BVDs for secondary RAID found\n");
3712 if (conf
->prl
!= DDF_RAID1
) {
3713 pr_err("Secondary RAID level only supported for mirrored BVD\n");
3716 if (conf
->srl
!= DDF_2STRIPED
&& conf
->srl
!= DDF_2SPANNED
) {
3717 pr_err("Secondary RAID level %d is unsupported\n",
3721 __set_sec_seen(conf
->sec_elmnt_seq
);
3722 for (i
= 0; i
< conf
->sec_elmnt_count
-1; i
++) {
3723 const struct vd_config
*bvd
= vc
->other_bvds
[i
];
3724 if (bvd
->sec_elmnt_seq
== DDF_UNUSED_BVD
)
3726 if (bvd
->srl
!= conf
->srl
) {
3727 pr_err("Inconsistent secondary RAID level across BVDs\n");
3730 if (bvd
->prl
!= conf
->prl
) {
3731 pr_err("Different RAID levels for BVDs are unsupported\n");
3734 if (!be16_eq(bvd
->prim_elmnt_count
, conf
->prim_elmnt_count
)) {
3735 pr_err("All BVDs must have the same number of primary elements\n");
3738 if (bvd
->chunk_shift
!= conf
->chunk_shift
) {
3739 pr_err("Different strip sizes for BVDs are unsupported\n");
3742 if (!be64_eq(bvd
->array_blocks
, conf
->array_blocks
)) {
3743 pr_err("Different BVD sizes are unsupported\n");
3746 __set_sec_seen(bvd
->sec_elmnt_seq
);
3748 for (i
= 0; i
< conf
->sec_elmnt_count
; i
++) {
3749 if (!__was_sec_seen(i
)) {
3750 pr_err("BVD %d is missing\n", i
);
3757 static unsigned int get_pd_index_from_refnum(const struct vcl
*vc
,
3758 be32 refnum
, unsigned int nmax
,
3759 const struct vd_config
**bvd
,
3762 unsigned int i
, j
, n
, sec
, cnt
;
3764 cnt
= be16_to_cpu(vc
->conf
.prim_elmnt_count
);
3765 sec
= (vc
->conf
.sec_elmnt_count
== 1 ? 0 : vc
->conf
.sec_elmnt_seq
);
3767 for (i
= 0, j
= 0 ; i
< nmax
; i
++) {
3768 /* j counts valid entries for this BVD */
3769 if (be32_eq(vc
->conf
.phys_refnum
[i
], refnum
)) {
3772 return sec
* cnt
+ j
;
3774 if (be32_to_cpu(vc
->conf
.phys_refnum
[i
]) != 0xffffffff)
3777 if (vc
->other_bvds
== NULL
)
3780 for (n
= 1; n
< vc
->conf
.sec_elmnt_count
; n
++) {
3781 struct vd_config
*vd
= vc
->other_bvds
[n
-1];
3782 sec
= vd
->sec_elmnt_seq
;
3783 if (sec
== DDF_UNUSED_BVD
)
3785 for (i
= 0, j
= 0 ; i
< nmax
; i
++) {
3786 if (be32_eq(vd
->phys_refnum
[i
], refnum
)) {
3789 return sec
* cnt
+ j
;
3791 if (be32_to_cpu(vd
->phys_refnum
[i
]) != 0xffffffff)
3797 return DDF_NOTFOUND
;
3800 static struct mdinfo
*container_content_ddf(struct supertype
*st
, char *subarray
)
3802 /* Given a container loaded by load_super_ddf_all,
3803 * extract information about all the arrays into
3806 * For each vcl in conflist: create an mdinfo, fill it in,
3807 * then look for matching devices (phys_refnum) in dlist
3808 * and create appropriate device mdinfo.
3810 struct ddf_super
*ddf
= st
->sb
;
3811 struct mdinfo
*rest
= NULL
;
3814 for (vc
= ddf
->conflist
; vc
; vc
=vc
->next
) {
3816 struct mdinfo
*this;
3822 (strtoul(subarray
, &ep
, 10) != vc
->vcnum
||
3826 if (vc
->conf
.sec_elmnt_count
> 1) {
3827 if (check_secondary(vc
) != 0)
3831 this = xcalloc(1, sizeof(*this));
3835 if (layout_ddf2md(&vc
->conf
, &this->array
))
3837 this->array
.md_minor
= -1;
3838 this->array
.major_version
= -1;
3839 this->array
.minor_version
= -2;
3840 this->safe_mode_delay
= DDF_SAFE_MODE_DELAY
;
3841 cptr
= (__u32
*)(vc
->conf
.guid
+ 16);
3842 this->array
.ctime
= DECADE
+ __be32_to_cpu(*cptr
);
3843 this->array
.utime
= DECADE
+
3844 be32_to_cpu(vc
->conf
.timestamp
);
3845 this->array
.chunk_size
= 512 << vc
->conf
.chunk_shift
;
3848 if ((ddf
->virt
->entries
[i
].state
& DDF_state_inconsistent
) ||
3849 (ddf
->virt
->entries
[i
].init_state
& DDF_initstate_mask
) !=
3851 this->array
.state
= 0;
3852 this->resync_start
= 0;
3854 this->array
.state
= 1;
3855 this->resync_start
= MaxSector
;
3857 _ddf_array_name(this->name
, ddf
, i
);
3858 memset(this->uuid
, 0, sizeof(this->uuid
));
3859 this->component_size
= be64_to_cpu(vc
->conf
.blocks
);
3860 this->array
.size
= this->component_size
/ 2;
3861 this->container_member
= i
;
3863 ddf
->currentconf
= vc
;
3864 uuid_from_super_ddf(st
, this->uuid
);
3866 ddf
->currentconf
= NULL
;
3868 sprintf(this->text_version
, "/%s/%d",
3869 st
->container_devnm
, this->container_member
);
3871 for (pd
= 0; pd
< be16_to_cpu(ddf
->phys
->max_pdes
); pd
++) {
3874 const struct vd_config
*bvd
;
3878 if (be32_to_cpu(ddf
->phys
->entries
[pd
].refnum
)
3882 stt
= be16_to_cpu(ddf
->phys
->entries
[pd
].state
);
3883 if ((stt
& (DDF_Online
|DDF_Failed
|DDF_Rebuilding
))
3887 i
= get_pd_index_from_refnum(
3888 vc
, ddf
->phys
->entries
[pd
].refnum
,
3889 ddf
->mppe
, &bvd
, &iphys
);
3890 if (i
== DDF_NOTFOUND
)
3893 this->array
.working_disks
++;
3895 for (d
= ddf
->dlist
; d
; d
=d
->next
)
3896 if (be32_eq(d
->disk
.refnum
,
3897 ddf
->phys
->entries
[pd
].refnum
))
3900 /* Haven't found that one yet, maybe there are others */
3903 dev
= xcalloc(1, sizeof(*dev
));
3904 dev
->next
= this->devs
;
3907 dev
->disk
.number
= be32_to_cpu(d
->disk
.refnum
);
3908 dev
->disk
.major
= d
->major
;
3909 dev
->disk
.minor
= d
->minor
;
3910 dev
->disk
.raid_disk
= i
;
3911 dev
->disk
.state
= (1<<MD_DISK_SYNC
)|(1<<MD_DISK_ACTIVE
);
3912 dev
->recovery_start
= MaxSector
;
3914 dev
->events
= be32_to_cpu(ddf
->active
->seq
);
3916 be64_to_cpu(LBA_OFFSET(ddf
, bvd
)[iphys
]);
3917 dev
->component_size
= be64_to_cpu(bvd
->blocks
);
3919 strcpy(dev
->name
, d
->devname
);
3925 static int store_super_ddf(struct supertype
*st
, int fd
)
3927 struct ddf_super
*ddf
= st
->sb
;
3928 unsigned long long dsize
;
3935 if (!get_dev_size(fd
, NULL
, &dsize
))
3938 if (ddf
->dlist
|| ddf
->conflist
) {
3943 if (fstat(fd
, &sta
) == -1 || !S_ISBLK(sta
.st_mode
)) {
3944 pr_err("%s: file descriptor for invalid device\n",
3948 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
3949 if (dl
->major
== (int)major(sta
.st_rdev
) &&
3950 dl
->minor
== (int)minor(sta
.st_rdev
))
3953 pr_err("%s: couldn't find disk %d/%d\n", __func__
,
3954 (int)major(sta
.st_rdev
),
3955 (int)minor(sta
.st_rdev
));
3960 ret
= (_write_super_to_disk(ddf
, dl
) != 1);
3965 if (posix_memalign(&buf
, 512, 512) != 0)
3967 memset(buf
, 0, 512);
3969 lseek64(fd
, dsize
-512, 0);
3970 rc
= write(fd
, buf
, 512);
3977 static int compare_super_ddf(struct supertype
*st
, struct supertype
*tst
)
3981 * 0 same, or first was empty, and second was copied
3982 * 1 second had wrong magic number - but that isn't possible
3984 * 3 wrong other info
3986 struct ddf_super
*first
= st
->sb
;
3987 struct ddf_super
*second
= tst
->sb
;
3988 struct dl
*dl1
, *dl2
;
3989 struct vcl
*vl1
, *vl2
;
3990 unsigned int max_vds
, max_pds
, pd
, vd
;
3998 if (memcmp(first
->anchor
.guid
, second
->anchor
.guid
, DDF_GUID_LEN
) != 0)
4001 /* It is only OK to compare info in the anchor. Anything else
4002 * could be changing due to a reconfig so must be ignored.
4003 * guid really should be enough anyway.
4006 if (!be32_eq(first
->active
->seq
, second
->active
->seq
)) {
4007 dprintf("%s: sequence number mismatch %u<->%u\n", __func__
,
4008 be32_to_cpu(first
->active
->seq
),
4009 be32_to_cpu(second
->active
->seq
));
4014 * At this point we are fairly sure that the meta data matches.
4015 * But the new disk may contain additional local data.
4016 * Add it to the super block.
4018 max_vds
= be16_to_cpu(first
->active
->max_vd_entries
);
4019 max_pds
= be16_to_cpu(first
->phys
->max_pdes
);
4020 for (vl2
= second
->conflist
; vl2
; vl2
= vl2
->next
) {
4021 for (vl1
= first
->conflist
; vl1
; vl1
= vl1
->next
)
4022 if (!memcmp(vl1
->conf
.guid
, vl2
->conf
.guid
,
4026 if (vl1
->other_bvds
!= NULL
&&
4027 vl1
->conf
.sec_elmnt_seq
!=
4028 vl2
->conf
.sec_elmnt_seq
) {
4029 dprintf("%s: adding BVD %u\n", __func__
,
4030 vl2
->conf
.sec_elmnt_seq
);
4031 add_other_bvd(vl1
, &vl2
->conf
,
4032 first
->conf_rec_len
*512);
4037 if (posix_memalign((void **)&vl1
, 512,
4038 (first
->conf_rec_len
*512 +
4039 offsetof(struct vcl
, conf
))) != 0) {
4040 pr_err("%s could not allocate vcl buf\n",
4045 vl1
->next
= first
->conflist
;
4046 vl1
->block_sizes
= NULL
;
4047 memcpy(&vl1
->conf
, &vl2
->conf
, first
->conf_rec_len
*512);
4048 if (alloc_other_bvds(first
, vl1
) != 0) {
4049 pr_err("%s could not allocate other bvds\n",
4054 for (vd
= 0; vd
< max_vds
; vd
++)
4055 if (!memcmp(first
->virt
->entries
[vd
].guid
,
4056 vl1
->conf
.guid
, DDF_GUID_LEN
))
4059 dprintf("%s: added config for VD %u\n", __func__
, vl1
->vcnum
);
4060 first
->conflist
= vl1
;
4063 for (dl2
= second
->dlist
; dl2
; dl2
= dl2
->next
) {
4064 for (dl1
= first
->dlist
; dl1
; dl1
= dl1
->next
)
4065 if (be32_eq(dl1
->disk
.refnum
, dl2
->disk
.refnum
))
4070 if (posix_memalign((void **)&dl1
, 512,
4071 sizeof(*dl1
) + (first
->max_part
) * sizeof(dl1
->vlist
[0]))
4073 pr_err("%s could not allocate disk info buffer\n",
4077 memcpy(dl1
, dl2
, sizeof(*dl1
));
4078 dl1
->mdupdate
= NULL
;
4079 dl1
->next
= first
->dlist
;
4081 for (pd
= 0; pd
< max_pds
; pd
++)
4082 if (be32_eq(first
->phys
->entries
[pd
].refnum
,
4085 dl1
->pdnum
= pd
< max_pds
? (int)pd
: -1;
4087 if (posix_memalign((void **)&dl1
->spare
, 512,
4088 first
->conf_rec_len
*512) != 0) {
4089 pr_err("%s could not allocate spare info buf\n",
4093 memcpy(dl1
->spare
, dl2
->spare
, first
->conf_rec_len
*512);
4095 for (vd
= 0 ; vd
< first
->max_part
; vd
++) {
4096 if (!dl2
->vlist
[vd
]) {
4097 dl1
->vlist
[vd
] = NULL
;
4100 for (vl1
= first
->conflist
; vl1
; vl1
= vl1
->next
) {
4101 if (!memcmp(vl1
->conf
.guid
,
4102 dl2
->vlist
[vd
]->conf
.guid
,
4105 dl1
->vlist
[vd
] = vl1
;
4109 dprintf("%s: added disk %d: %08x\n", __func__
, dl1
->pdnum
,
4110 be32_to_cpu(dl1
->disk
.refnum
));
4118 * A new array 'a' has been started which claims to be instance 'inst'
4119 * within container 'c'.
4120 * We need to confirm that the array matches the metadata in 'c' so
4121 * that we don't corrupt any metadata.
4123 static int ddf_open_new(struct supertype
*c
, struct active_array
*a
, char *inst
)
4125 struct ddf_super
*ddf
= c
->sb
;
4129 static const char faulty
[] = "faulty";
4131 if (all_ff(ddf
->virt
->entries
[n
].guid
)) {
4132 pr_err("%s: subarray %d doesn't exist\n", __func__
, n
);
4135 dprintf("%s: new subarray %d, GUID: %s\n", __func__
, n
,
4136 guid_str(ddf
->virt
->entries
[n
].guid
));
4137 for (dev
= a
->info
.devs
; dev
; dev
= dev
->next
) {
4138 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
4139 if (dl
->major
== dev
->disk
.major
&&
4140 dl
->minor
== dev
->disk
.minor
)
4142 if (!dl
|| dl
->pdnum
< 0) {
4143 pr_err("%s: device %d/%d of subarray %d not found in meta data\n",
4144 __func__
, dev
->disk
.major
, dev
->disk
.minor
, n
);
4147 if ((be16_to_cpu(ddf
->phys
->entries
[dl
->pdnum
].state
) &
4148 (DDF_Online
|DDF_Missing
|DDF_Failed
)) != DDF_Online
) {
4149 pr_err("%s: new subarray %d contains broken device %d/%d (%02x)\n",
4150 __func__
, n
, dl
->major
, dl
->minor
,
4152 ddf
->phys
->entries
[dl
->pdnum
].state
));
4153 if (write(dev
->state_fd
, faulty
, sizeof(faulty
)-1) !=
4155 pr_err("Write to state_fd failed\n");
4156 dev
->curr_state
= DS_FAULTY
;
4159 a
->info
.container_member
= n
;
4163 static void handle_missing(struct ddf_super
*ddf
, struct active_array
*a
, int inst
)
4165 /* This member array is being activated. If any devices
4166 * are missing they must now be marked as failed.
4168 struct vd_config
*vc
;
4176 for (n
= 0; ; n
++) {
4177 vc
= find_vdcr(ddf
, inst
, n
, &n_bvd
, &vcl
);
4180 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
4181 if (be32_eq(dl
->disk
.refnum
, vc
->phys_refnum
[n_bvd
]))
4184 /* Found this disk, so not missing */
4187 /* Mark the device as failed/missing. */
4188 pd
= find_phys(ddf
, vc
->phys_refnum
[n_bvd
]);
4189 if (pd
>= 0 && be16_and(ddf
->phys
->entries
[pd
].state
,
4190 cpu_to_be16(DDF_Online
))) {
4191 be16_clear(ddf
->phys
->entries
[pd
].state
,
4192 cpu_to_be16(DDF_Online
));
4193 be16_set(ddf
->phys
->entries
[pd
].state
,
4194 cpu_to_be16(DDF_Failed
|DDF_Missing
));
4195 vc
->phys_refnum
[n_bvd
] = cpu_to_be32(0);
4196 ddf_set_updates_pending(ddf
, vc
);
4199 /* Mark the array as Degraded */
4200 state
= get_svd_state(ddf
, vcl
);
4201 if (ddf
->virt
->entries
[inst
].state
!=
4202 ((ddf
->virt
->entries
[inst
].state
& ~DDF_state_mask
)
4204 ddf
->virt
->entries
[inst
].state
=
4205 (ddf
->virt
->entries
[inst
].state
& ~DDF_state_mask
)
4207 a
->check_degraded
= 1;
4208 ddf_set_updates_pending(ddf
, vc
);
4214 * The array 'a' is to be marked clean in the metadata.
4215 * If '->resync_start' is not ~(unsigned long long)0, then the array is only
4216 * clean up to the point (in sectors). If that cannot be recorded in the
4217 * metadata, then leave it as dirty.
4219 * For DDF, we need to clear the DDF_state_inconsistent bit in the
4220 * !global! virtual_disk.virtual_entry structure.
4222 static int ddf_set_array_state(struct active_array
*a
, int consistent
)
4224 struct ddf_super
*ddf
= a
->container
->sb
;
4225 int inst
= a
->info
.container_member
;
4226 int old
= ddf
->virt
->entries
[inst
].state
;
4227 if (consistent
== 2) {
4228 handle_missing(ddf
, a
, inst
);
4229 /* Should check if a recovery should be started FIXME */
4231 if (!is_resync_complete(&a
->info
))
4235 ddf
->virt
->entries
[inst
].state
&= ~DDF_state_inconsistent
;
4237 ddf
->virt
->entries
[inst
].state
|= DDF_state_inconsistent
;
4238 if (old
!= ddf
->virt
->entries
[inst
].state
)
4239 ddf_set_updates_pending(ddf
, NULL
);
4241 old
= ddf
->virt
->entries
[inst
].init_state
;
4242 ddf
->virt
->entries
[inst
].init_state
&= ~DDF_initstate_mask
;
4243 if (is_resync_complete(&a
->info
))
4244 ddf
->virt
->entries
[inst
].init_state
|= DDF_init_full
;
4245 else if (a
->info
.resync_start
== 0)
4246 ddf
->virt
->entries
[inst
].init_state
|= DDF_init_not
;
4248 ddf
->virt
->entries
[inst
].init_state
|= DDF_init_quick
;
4249 if (old
!= ddf
->virt
->entries
[inst
].init_state
)
4250 ddf_set_updates_pending(ddf
, NULL
);
4252 dprintf("ddf mark %d/%s (%d) %s %llu\n", inst
,
4253 guid_str(ddf
->virt
->entries
[inst
].guid
), a
->curr_state
,
4254 consistent
?"clean":"dirty",
4255 a
->info
.resync_start
);
4259 static int get_bvd_state(const struct ddf_super
*ddf
,
4260 const struct vd_config
*vc
)
4262 unsigned int i
, n_bvd
, working
= 0;
4263 unsigned int n_prim
= be16_to_cpu(vc
->prim_elmnt_count
);
4265 char *avail
= xcalloc(1, n_prim
);
4266 mdu_array_info_t array
;
4268 layout_ddf2md(vc
, &array
);
4270 for (i
= 0; i
< n_prim
; i
++) {
4271 if (!find_index_in_bvd(ddf
, vc
, i
, &n_bvd
))
4273 pd
= find_phys(ddf
, vc
->phys_refnum
[n_bvd
]);
4276 st
= be16_to_cpu(ddf
->phys
->entries
[pd
].state
);
4277 if ((st
& (DDF_Online
|DDF_Failed
|DDF_Rebuilding
))
4284 state
= DDF_state_degraded
;
4285 if (working
== n_prim
)
4286 state
= DDF_state_optimal
;
4292 state
= DDF_state_failed
;
4296 state
= DDF_state_failed
;
4297 else if (working
>= 2)
4298 state
= DDF_state_part_optimal
;
4301 if (!enough(10, n_prim
, array
.layout
, 1, avail
))
4302 state
= DDF_state_failed
;
4306 if (working
< n_prim
- 1)
4307 state
= DDF_state_failed
;
4310 if (working
< n_prim
- 2)
4311 state
= DDF_state_failed
;
4312 else if (working
== n_prim
- 1)
4313 state
= DDF_state_part_optimal
;
4319 static int secondary_state(int state
, int other
, int seclevel
)
4321 if (state
== DDF_state_optimal
&& other
== DDF_state_optimal
)
4322 return DDF_state_optimal
;
4323 if (seclevel
== DDF_2MIRRORED
) {
4324 if (state
== DDF_state_optimal
|| other
== DDF_state_optimal
)
4325 return DDF_state_part_optimal
;
4326 if (state
== DDF_state_failed
&& other
== DDF_state_failed
)
4327 return DDF_state_failed
;
4328 return DDF_state_degraded
;
4330 if (state
== DDF_state_failed
|| other
== DDF_state_failed
)
4331 return DDF_state_failed
;
4332 if (state
== DDF_state_degraded
|| other
== DDF_state_degraded
)
4333 return DDF_state_degraded
;
4334 return DDF_state_part_optimal
;
4338 static int get_svd_state(const struct ddf_super
*ddf
, const struct vcl
*vcl
)
4340 int state
= get_bvd_state(ddf
, &vcl
->conf
);
4342 for (i
= 1; i
< vcl
->conf
.sec_elmnt_count
; i
++) {
4343 state
= secondary_state(
4345 get_bvd_state(ddf
, vcl
->other_bvds
[i
-1]),
4352 * The state of each disk is stored in the global phys_disk structure
4353 * in phys_disk.entries[n].state.
4354 * This makes various combinations awkward.
4355 * - When a device fails in any array, it must be failed in all arrays
4356 * that include a part of this device.
4357 * - When a component is rebuilding, we cannot include it officially in the
4358 * array unless this is the only array that uses the device.
4360 * So: when transitioning:
4361 * Online -> failed, just set failed flag. monitor will propagate
4362 * spare -> online, the device might need to be added to the array.
4363 * spare -> failed, just set failed. Don't worry if in array or not.
4365 static void ddf_set_disk(struct active_array
*a
, int n
, int state
)
4367 struct ddf_super
*ddf
= a
->container
->sb
;
4368 unsigned int inst
= a
->info
.container_member
, n_bvd
;
4370 struct vd_config
*vc
= find_vdcr(ddf
, inst
, (unsigned int)n
,
4377 dprintf("%s: %d to %x\n", __func__
, n
, state
);
4379 dprintf("ddf: cannot find instance %d!!\n", inst
);
4382 /* Find the matching slot in 'info'. */
4383 for (mdi
= a
->info
.devs
; mdi
; mdi
= mdi
->next
)
4384 if (mdi
->disk
.raid_disk
== n
)
4387 pr_err("%s: cannot find raid disk %d\n",
4392 /* and find the 'dl' entry corresponding to that. */
4393 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
4394 if (mdi
->state_fd
>= 0 &&
4395 mdi
->disk
.major
== dl
->major
&&
4396 mdi
->disk
.minor
== dl
->minor
)
4399 pr_err("%s: cannot find raid disk %d (%d/%d)\n",
4401 mdi
->disk
.major
, mdi
->disk
.minor
);
4405 pd
= find_phys(ddf
, vc
->phys_refnum
[n_bvd
]);
4406 if (pd
< 0 || pd
!= dl
->pdnum
) {
4407 /* disk doesn't currently exist or has changed.
4408 * If it is now in_sync, insert it. */
4409 dprintf("%s: phys disk not found for %d: %d/%d ref %08x\n",
4410 __func__
, dl
->pdnum
, dl
->major
, dl
->minor
,
4411 be32_to_cpu(dl
->disk
.refnum
));
4412 dprintf("%s: array %u disk %u ref %08x pd %d\n",
4413 __func__
, inst
, n_bvd
,
4414 be32_to_cpu(vc
->phys_refnum
[n_bvd
]), pd
);
4415 if ((state
& DS_INSYNC
) && ! (state
& DS_FAULTY
)) {
4416 pd
= dl
->pdnum
; /* FIXME: is this really correct ? */
4417 vc
->phys_refnum
[n_bvd
] = dl
->disk
.refnum
;
4418 LBA_OFFSET(ddf
, vc
)[n_bvd
] =
4419 cpu_to_be64(mdi
->data_offset
);
4420 be16_clear(ddf
->phys
->entries
[pd
].type
,
4421 cpu_to_be16(DDF_Global_Spare
));
4422 be16_set(ddf
->phys
->entries
[pd
].type
,
4423 cpu_to_be16(DDF_Active_in_VD
));
4427 be16 old
= ddf
->phys
->entries
[pd
].state
;
4428 if (state
& DS_FAULTY
)
4429 be16_set(ddf
->phys
->entries
[pd
].state
,
4430 cpu_to_be16(DDF_Failed
));
4431 if (state
& DS_INSYNC
) {
4432 be16_set(ddf
->phys
->entries
[pd
].state
,
4433 cpu_to_be16(DDF_Online
));
4434 be16_clear(ddf
->phys
->entries
[pd
].state
,
4435 cpu_to_be16(DDF_Rebuilding
));
4437 if (!be16_eq(old
, ddf
->phys
->entries
[pd
].state
))
4441 dprintf("ddf: set_disk %d (%08x) to %x->%02x\n", n
,
4442 be32_to_cpu(dl
->disk
.refnum
), state
,
4443 be16_to_cpu(ddf
->phys
->entries
[pd
].state
));
4445 /* Now we need to check the state of the array and update
4446 * virtual_disk.entries[n].state.
4447 * It needs to be one of "optimal", "degraded", "failed".
4448 * I don't understand 'deleted' or 'missing'.
4450 state
= get_svd_state(ddf
, vcl
);
4452 if (ddf
->virt
->entries
[inst
].state
!=
4453 ((ddf
->virt
->entries
[inst
].state
& ~DDF_state_mask
)
4455 ddf
->virt
->entries
[inst
].state
=
4456 (ddf
->virt
->entries
[inst
].state
& ~DDF_state_mask
)
4461 ddf_set_updates_pending(ddf
, vc
);
4464 static void ddf_sync_metadata(struct supertype
*st
)
4467 * Write all data to all devices.
4468 * Later, we might be able to track whether only local changes
4469 * have been made, or whether any global data has been changed,
4470 * but ddf is sufficiently weird that it probably always
4471 * changes global data ....
4473 struct ddf_super
*ddf
= st
->sb
;
4474 if (!ddf
->updates_pending
)
4476 ddf
->updates_pending
= 0;
4477 __write_init_super_ddf(st
);
4478 dprintf("ddf: sync_metadata\n");
4481 static int del_from_conflist(struct vcl
**list
, const char *guid
)
4485 for (p
= list
; p
&& *p
; p
= &((*p
)->next
))
4486 if (!memcmp((*p
)->conf
.guid
, guid
, DDF_GUID_LEN
)) {
4493 static int _kill_subarray_ddf(struct ddf_super
*ddf
, const char *guid
)
4496 unsigned int vdnum
, i
;
4497 vdnum
= find_vde_by_guid(ddf
, guid
);
4498 if (vdnum
== DDF_NOTFOUND
) {
4499 pr_err("%s: could not find VD %s\n", __func__
,
4503 if (del_from_conflist(&ddf
->conflist
, guid
) == 0) {
4504 pr_err("%s: could not find conf %s\n", __func__
,
4508 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
4509 for (i
= 0; i
< ddf
->max_part
; i
++)
4510 if (dl
->vlist
[i
] != NULL
&&
4511 !memcmp(dl
->vlist
[i
]->conf
.guid
, guid
,
4513 dl
->vlist
[i
] = NULL
;
4514 memset(ddf
->virt
->entries
[vdnum
].guid
, 0xff, DDF_GUID_LEN
);
4515 dprintf("%s: deleted %s\n", __func__
, guid_str(guid
));
4519 static int kill_subarray_ddf(struct supertype
*st
)
4521 struct ddf_super
*ddf
= st
->sb
;
4523 * currentconf is set in container_content_ddf,
4524 * called with subarray arg
4526 struct vcl
*victim
= ddf
->currentconf
;
4527 struct vd_config
*conf
;
4530 ddf
->currentconf
= NULL
;
4532 pr_err("%s: nothing to kill\n", __func__
);
4535 conf
= &victim
->conf
;
4536 vdnum
= find_vde_by_guid(ddf
, conf
->guid
);
4537 if (vdnum
== DDF_NOTFOUND
) {
4538 pr_err("%s: could not find VD %s\n", __func__
,
4539 guid_str(conf
->guid
));
4542 if (st
->update_tail
) {
4543 struct virtual_disk
*vd
;
4544 int len
= sizeof(struct virtual_disk
)
4545 + sizeof(struct virtual_entry
);
4548 pr_err("%s: failed to allocate %d bytes\n", __func__
,
4552 memset(vd
, 0 , len
);
4553 vd
->magic
= DDF_VIRT_RECORDS_MAGIC
;
4554 vd
->populated_vdes
= cpu_to_be16(0);
4555 memcpy(vd
->entries
[0].guid
, conf
->guid
, DDF_GUID_LEN
);
4556 /* we use DDF_state_deleted as marker */
4557 vd
->entries
[0].state
= DDF_state_deleted
;
4558 append_metadata_update(st
, vd
, len
);
4560 _kill_subarray_ddf(ddf
, conf
->guid
);
4561 ddf_set_updates_pending(ddf
, NULL
);
4562 ddf_sync_metadata(st
);
4567 static void copy_matching_bvd(struct ddf_super
*ddf
,
4568 struct vd_config
*conf
,
4569 const struct metadata_update
*update
)
4572 be16_to_cpu(ddf
->anchor
.max_primary_element_entries
);
4573 unsigned int len
= ddf
->conf_rec_len
* 512;
4575 struct vd_config
*vc
;
4576 for (p
= update
->buf
; p
< update
->buf
+ update
->len
; p
+= len
) {
4577 vc
= (struct vd_config
*) p
;
4578 if (vc
->sec_elmnt_seq
== conf
->sec_elmnt_seq
) {
4579 memcpy(conf
->phys_refnum
, vc
->phys_refnum
,
4580 mppe
* (sizeof(__u32
) + sizeof(__u64
)));
4584 pr_err("%s: no match for BVD %d of %s in update\n", __func__
,
4585 conf
->sec_elmnt_seq
, guid_str(conf
->guid
));
4588 static void ddf_process_update(struct supertype
*st
,
4589 struct metadata_update
*update
)
4591 /* Apply this update to the metadata.
4592 * The first 4 bytes are a DDF_*_MAGIC which guides
4594 * Possible update are:
4595 * DDF_PHYS_RECORDS_MAGIC
4596 * Add a new physical device or remove an old one.
4597 * Changes to this record only happen implicitly.
4598 * used_pdes is the device number.
4599 * DDF_VIRT_RECORDS_MAGIC
4600 * Add a new VD. Possibly also change the 'access' bits.
4601 * populated_vdes is the entry number.
4603 * New or updated VD. the VIRT_RECORD must already
4604 * exist. For an update, phys_refnum and lba_offset
4605 * (at least) are updated, and the VD_CONF must
4606 * be written to precisely those devices listed with
4608 * DDF_SPARE_ASSIGN_MAGIC
4609 * replacement Spare Assignment Record... but for which device?
4612 * - to create a new array, we send a VIRT_RECORD and
4613 * a VD_CONF. Then assemble and start the array.
4614 * - to activate a spare we send a VD_CONF to add the phys_refnum
4615 * and offset. This will also mark the spare as active with
4616 * a spare-assignment record.
4618 struct ddf_super
*ddf
= st
->sb
;
4619 be32
*magic
= (be32
*)update
->buf
;
4620 struct phys_disk
*pd
;
4621 struct virtual_disk
*vd
;
4622 struct vd_config
*vc
;
4626 unsigned int pdnum
, pd2
, len
;
4628 dprintf("Process update %x\n", be32_to_cpu(*magic
));
4630 if (be32_eq(*magic
, DDF_PHYS_RECORDS_MAGIC
)) {
4631 if (update
->len
!= (sizeof(struct phys_disk
) +
4632 sizeof(struct phys_disk_entry
)))
4634 pd
= (struct phys_disk
*)update
->buf
;
4636 ent
= be16_to_cpu(pd
->used_pdes
);
4637 if (ent
>= be16_to_cpu(ddf
->phys
->max_pdes
))
4639 if (be16_and(pd
->entries
[0].state
, cpu_to_be16(DDF_Missing
))) {
4641 /* removing this disk. */
4642 be16_set(ddf
->phys
->entries
[ent
].state
,
4643 cpu_to_be16(DDF_Missing
));
4644 for (dlp
= &ddf
->dlist
; *dlp
; dlp
= &(*dlp
)->next
) {
4645 struct dl
*dl
= *dlp
;
4646 if (dl
->pdnum
== (signed)ent
) {
4649 /* FIXME this doesn't free
4656 ddf_set_updates_pending(ddf
, NULL
);
4659 if (!all_ff(ddf
->phys
->entries
[ent
].guid
))
4661 ddf
->phys
->entries
[ent
] = pd
->entries
[0];
4662 ddf
->phys
->used_pdes
= cpu_to_be16
4663 (1 + be16_to_cpu(ddf
->phys
->used_pdes
));
4664 ddf_set_updates_pending(ddf
, NULL
);
4665 if (ddf
->add_list
) {
4666 struct active_array
*a
;
4667 struct dl
*al
= ddf
->add_list
;
4668 ddf
->add_list
= al
->next
;
4670 al
->next
= ddf
->dlist
;
4673 /* As a device has been added, we should check
4674 * for any degraded devices that might make
4675 * use of this spare */
4676 for (a
= st
->arrays
; a
; a
=a
->next
)
4677 a
->check_degraded
= 1;
4679 } else if (be32_eq(*magic
, DDF_VIRT_RECORDS_MAGIC
)) {
4680 if (update
->len
!= (sizeof(struct virtual_disk
) +
4681 sizeof(struct virtual_entry
)))
4683 vd
= (struct virtual_disk
*)update
->buf
;
4685 if (vd
->entries
[0].state
== DDF_state_deleted
) {
4686 if (_kill_subarray_ddf(ddf
, vd
->entries
[0].guid
))
4689 ent
= find_vde_by_guid(ddf
, vd
->entries
[0].guid
);
4690 if (ent
!= DDF_NOTFOUND
) {
4691 dprintf("%s: VD %s exists already in slot %d\n",
4692 __func__
, guid_str(vd
->entries
[0].guid
),
4696 ent
= find_unused_vde(ddf
);
4697 if (ent
== DDF_NOTFOUND
)
4699 ddf
->virt
->entries
[ent
] = vd
->entries
[0];
4700 ddf
->virt
->populated_vdes
=
4703 ddf
->virt
->populated_vdes
));
4704 dprintf("%s: added VD %s in slot %d(s=%02x i=%02x)\n",
4705 __func__
, guid_str(vd
->entries
[0].guid
), ent
,
4706 ddf
->virt
->entries
[ent
].state
,
4707 ddf
->virt
->entries
[ent
].init_state
);
4709 ddf_set_updates_pending(ddf
, NULL
);
4712 else if (be32_eq(*magic
, DDF_VD_CONF_MAGIC
)) {
4713 vc
= (struct vd_config
*)update
->buf
;
4714 len
= ddf
->conf_rec_len
* 512;
4715 if ((unsigned int)update
->len
!= len
* vc
->sec_elmnt_count
) {
4716 pr_err("%s: %s: insufficient data (%d) for %u BVDs\n",
4717 __func__
, guid_str(vc
->guid
), update
->len
,
4718 vc
->sec_elmnt_count
);
4721 for (vcl
= ddf
->conflist
; vcl
; vcl
= vcl
->next
)
4722 if (memcmp(vcl
->conf
.guid
, vc
->guid
, DDF_GUID_LEN
) == 0)
4724 dprintf("%s: conf update for %s (%s)\n", __func__
,
4725 guid_str(vc
->guid
), (vcl
? "old" : "new"));
4727 /* An update, just copy the phys_refnum and lba_offset
4732 copy_matching_bvd(ddf
, &vcl
->conf
, update
);
4733 for (k
= 0; k
< be16_to_cpu(vc
->prim_elmnt_count
); k
++)
4734 dprintf("BVD %u has %08x at %llu\n", 0,
4735 be32_to_cpu(vcl
->conf
.phys_refnum
[k
]),
4736 be64_to_cpu(LBA_OFFSET(ddf
,
4738 for (i
= 1; i
< vc
->sec_elmnt_count
; i
++) {
4739 copy_matching_bvd(ddf
, vcl
->other_bvds
[i
-1],
4741 for (k
= 0; k
< be16_to_cpu(
4742 vc
->prim_elmnt_count
); k
++)
4743 dprintf("BVD %u has %08x at %llu\n", i
,
4745 (vcl
->other_bvds
[i
-1]->
4750 vcl
->other_bvds
[i
-1])[k
]));
4757 vcl
= update
->space
;
4758 update
->space
= NULL
;
4759 vcl
->next
= ddf
->conflist
;
4760 memcpy(&vcl
->conf
, vc
, len
);
4761 ent
= find_vde_by_guid(ddf
, vc
->guid
);
4762 if (ent
== DDF_NOTFOUND
)
4765 ddf
->conflist
= vcl
;
4766 for (i
= 1; i
< vc
->sec_elmnt_count
; i
++)
4767 memcpy(vcl
->other_bvds
[i
-1],
4768 update
->buf
+ len
* i
, len
);
4770 /* Set DDF_Transition on all Failed devices - to help
4771 * us detect those that are no longer in use
4773 for (pdnum
= 0; pdnum
< be16_to_cpu(ddf
->phys
->max_pdes
);
4775 if (be16_and(ddf
->phys
->entries
[pdnum
].state
,
4776 cpu_to_be16(DDF_Failed
)))
4777 be16_set(ddf
->phys
->entries
[pdnum
].state
,
4778 cpu_to_be16(DDF_Transition
));
4779 /* Now make sure vlist is correct for each dl. */
4780 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
) {
4781 unsigned int vn
= 0;
4782 int in_degraded
= 0;
4786 for (vcl
= ddf
->conflist
; vcl
; vcl
= vcl
->next
) {
4787 unsigned int dn
, ibvd
;
4788 const struct vd_config
*conf
;
4790 dn
= get_pd_index_from_refnum(vcl
,
4794 if (dn
== DDF_NOTFOUND
)
4796 dprintf("dev %d/%08x has %s (sec=%u) at %d\n",
4798 be32_to_cpu(dl
->disk
.refnum
),
4799 guid_str(conf
->guid
),
4800 conf
->sec_elmnt_seq
, vn
);
4801 /* Clear the Transition flag */
4803 (ddf
->phys
->entries
[dl
->pdnum
].state
,
4804 cpu_to_be16(DDF_Failed
)))
4805 be16_clear(ddf
->phys
4806 ->entries
[dl
->pdnum
].state
,
4807 cpu_to_be16(DDF_Transition
));
4808 dl
->vlist
[vn
++] = vcl
;
4809 vstate
= ddf
->virt
->entries
[vcl
->vcnum
].state
4811 if (vstate
== DDF_state_degraded
||
4812 vstate
== DDF_state_part_optimal
)
4815 while (vn
< ddf
->max_part
)
4816 dl
->vlist
[vn
++] = NULL
;
4818 be16_clear(ddf
->phys
->entries
[dl
->pdnum
].type
,
4819 cpu_to_be16(DDF_Global_Spare
));
4820 if (!be16_and(ddf
->phys
4821 ->entries
[dl
->pdnum
].type
,
4822 cpu_to_be16(DDF_Active_in_VD
))) {
4824 ->entries
[dl
->pdnum
].type
,
4825 cpu_to_be16(DDF_Active_in_VD
));
4828 ->entries
[dl
->pdnum
]
4835 be16_clear(ddf
->phys
->entries
[dl
->pdnum
].type
,
4836 cpu_to_be16(DDF_Global_Spare
));
4837 be16_set(ddf
->phys
->entries
[dl
->pdnum
].type
,
4838 cpu_to_be16(DDF_Spare
));
4840 if (!dl
->vlist
[0] && !dl
->spare
) {
4841 be16_set(ddf
->phys
->entries
[dl
->pdnum
].type
,
4842 cpu_to_be16(DDF_Global_Spare
));
4843 be16_clear(ddf
->phys
->entries
[dl
->pdnum
].type
,
4844 cpu_to_be16(DDF_Spare
));
4845 be16_clear(ddf
->phys
->entries
[dl
->pdnum
].type
,
4846 cpu_to_be16(DDF_Active_in_VD
));
4850 /* Now remove any 'Failed' devices that are not part
4851 * of any VD. They will have the Transition flag set.
4852 * Once done, we need to update all dl->pdnum numbers.
4855 for (pdnum
= 0; pdnum
< be16_to_cpu(ddf
->phys
->max_pdes
);
4857 if (be32_to_cpu(ddf
->phys
->entries
[pdnum
].refnum
) ==
4860 if (be16_and(ddf
->phys
->entries
[pdnum
].state
,
4861 cpu_to_be16(DDF_Failed
))
4862 && be16_and(ddf
->phys
->entries
[pdnum
].state
,
4863 cpu_to_be16(DDF_Transition
))) {
4864 /* skip this one unless in dlist*/
4865 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
4866 if (dl
->pdnum
== (int)pdnum
)
4874 ddf
->phys
->entries
[pd2
] =
4875 ddf
->phys
->entries
[pdnum
];
4876 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
4877 if (dl
->pdnum
== (int)pdnum
)
4882 ddf
->phys
->used_pdes
= cpu_to_be16(pd2
);
4883 while (pd2
< pdnum
) {
4884 memset(ddf
->phys
->entries
[pd2
].guid
, 0xff,
4889 ddf_set_updates_pending(ddf
, vc
);
4891 /* case DDF_SPARE_ASSIGN_MAGIC */
4894 static void ddf_prepare_update(struct supertype
*st
,
4895 struct metadata_update
*update
)
4897 /* This update arrived at managemon.
4898 * We are about to pass it to monitor.
4899 * If a malloc is needed, do it here.
4901 struct ddf_super
*ddf
= st
->sb
;
4902 be32
*magic
= (be32
*)update
->buf
;
4903 if (be32_eq(*magic
, DDF_VD_CONF_MAGIC
)) {
4905 struct vd_config
*conf
= (struct vd_config
*) update
->buf
;
4906 if (posix_memalign(&update
->space
, 512,
4907 offsetof(struct vcl
, conf
)
4908 + ddf
->conf_rec_len
* 512) != 0) {
4909 update
->space
= NULL
;
4912 vcl
= update
->space
;
4913 vcl
->conf
.sec_elmnt_count
= conf
->sec_elmnt_count
;
4914 if (alloc_other_bvds(ddf
, vcl
) != 0) {
4915 free(update
->space
);
4916 update
->space
= NULL
;
4922 * Check degraded state of a RAID10.
4923 * returns 2 for good, 1 for degraded, 0 for failed, and -1 for error
4925 static int raid10_degraded(struct mdinfo
*info
)
4933 n_prim
= info
->array
.layout
& ~0x100;
4934 n_bvds
= info
->array
.raid_disks
/ n_prim
;
4935 found
= xmalloc(n_bvds
);
4938 memset(found
, 0, n_bvds
);
4939 for (d
= info
->devs
; d
; d
= d
->next
) {
4940 i
= d
->disk
.raid_disk
/ n_prim
;
4942 pr_err("%s: BUG: invalid raid disk\n", __func__
);
4945 if (d
->state_fd
> 0)
4949 for (i
= 0; i
< n_bvds
; i
++)
4951 dprintf("%s: BVD %d/%d failed\n", __func__
, i
, n_bvds
);
4954 } else if (found
[i
] < n_prim
) {
4955 dprintf("%s: BVD %d/%d degraded\n", __func__
, i
,
4965 * Check if the array 'a' is degraded but not failed.
4966 * If it is, find as many spares as are available and needed and
4967 * arrange for their inclusion.
4968 * We only choose devices which are not already in the array,
4969 * and prefer those with a spare-assignment to this array.
4970 * Otherwise we choose global spares - assuming always that
4971 * there is enough room.
4972 * For each spare that we assign, we return an 'mdinfo' which
4973 * describes the position for the device in the array.
4974 * We also add to 'updates' a DDF_VD_CONF_MAGIC update with
4975 * the new phys_refnum and lba_offset values.
4977 * Only worry about BVDs at the moment.
4979 static struct mdinfo
*ddf_activate_spare(struct active_array
*a
,
4980 struct metadata_update
**updates
)
4984 struct ddf_super
*ddf
= a
->container
->sb
;
4986 struct mdinfo
*rv
= NULL
;
4988 struct metadata_update
*mu
;
4993 struct vd_config
*vc
;
4996 for (d
= a
->info
.devs
; d
; d
= d
->next
) {
4997 if ((d
->curr_state
& DS_FAULTY
) &&
4999 /* wait for Removal to happen */
5001 if (d
->state_fd
>= 0)
5005 dprintf("%s: working=%d (%d) level=%d\n", __func__
, working
,
5006 a
->info
.array
.raid_disks
,
5007 a
->info
.array
.level
);
5008 if (working
== a
->info
.array
.raid_disks
)
5009 return NULL
; /* array not degraded */
5010 switch (a
->info
.array
.level
) {
5013 return NULL
; /* failed */
5017 if (working
< a
->info
.array
.raid_disks
- 1)
5018 return NULL
; /* failed */
5021 if (working
< a
->info
.array
.raid_disks
- 2)
5022 return NULL
; /* failed */
5025 if (raid10_degraded(&a
->info
) < 1)
5028 default: /* concat or stripe */
5029 return NULL
; /* failed */
5032 /* For each slot, if it is not working, find a spare */
5034 for (i
= 0; i
< a
->info
.array
.raid_disks
; i
++) {
5035 for (d
= a
->info
.devs
; d
; d
= d
->next
)
5036 if (d
->disk
.raid_disk
== i
)
5038 dprintf("found %d: %p %x\n", i
, d
, d
?d
->curr_state
:0);
5039 if (d
&& (d
->state_fd
>= 0))
5042 /* OK, this device needs recovery. Find a spare */
5044 for ( ; dl
; dl
= dl
->next
) {
5045 unsigned long long esize
;
5046 unsigned long long pos
;
5049 int is_dedicated
= 0;
5056 state
= ddf
->phys
->entries
[dl
->pdnum
].state
;
5058 cpu_to_be16(DDF_Failed
|DDF_Missing
)) ||
5060 cpu_to_be16(DDF_Online
)))
5063 /* If in this array, skip */
5064 for (d2
= a
->info
.devs
; d2
; d2
= d2
->next
)
5065 if (d2
->state_fd
>= 0 &&
5066 d2
->disk
.major
== dl
->major
&&
5067 d2
->disk
.minor
== dl
->minor
) {
5068 dprintf("%x:%x (%08x) already in array\n",
5069 dl
->major
, dl
->minor
,
5070 be32_to_cpu(dl
->disk
.refnum
));
5075 if (be16_and(ddf
->phys
->entries
[dl
->pdnum
].type
,
5076 cpu_to_be16(DDF_Spare
))) {
5077 /* Check spare assign record */
5079 if (dl
->spare
->type
& DDF_spare_dedicated
) {
5080 /* check spare_ents for guid */
5086 if (memcmp(dl
->spare
->spare_ents
[j
].guid
,
5087 ddf
->virt
->entries
[a
->info
.container_member
].guid
,
5094 } else if (be16_and(ddf
->phys
->entries
[dl
->pdnum
].type
,
5095 cpu_to_be16(DDF_Global_Spare
))) {
5097 } else if (!be16_and(ddf
->phys
5098 ->entries
[dl
->pdnum
].state
,
5099 cpu_to_be16(DDF_Failed
))) {
5100 /* we can possibly use some of this */
5103 if ( ! (is_dedicated
||
5104 (is_global
&& global_ok
))) {
5105 dprintf("%x:%x not suitable: %d %d\n", dl
->major
, dl
->minor
,
5106 is_dedicated
, is_global
);
5110 /* We are allowed to use this device - is there space?
5111 * We need a->info.component_size sectors */
5112 ex
= get_extents(ddf
, dl
);
5114 dprintf("cannot get extents\n");
5121 esize
= ex
[j
].start
- pos
;
5122 if (esize
>= a
->info
.component_size
)
5124 pos
= ex
[j
].start
+ ex
[j
].size
;
5126 } while (ex
[j
-1].size
);
5129 if (esize
< a
->info
.component_size
) {
5130 dprintf("%x:%x has no room: %llu %llu\n",
5131 dl
->major
, dl
->minor
,
5132 esize
, a
->info
.component_size
);
5137 /* Cool, we have a device with some space at pos */
5138 di
= xcalloc(1, sizeof(*di
));
5139 di
->disk
.number
= i
;
5140 di
->disk
.raid_disk
= i
;
5141 di
->disk
.major
= dl
->major
;
5142 di
->disk
.minor
= dl
->minor
;
5144 di
->recovery_start
= 0;
5145 di
->data_offset
= pos
;
5146 di
->component_size
= a
->info
.component_size
;
5149 dprintf("%x:%x (%08x) to be %d at %llu\n",
5150 dl
->major
, dl
->minor
,
5151 be32_to_cpu(dl
->disk
.refnum
), i
, pos
);
5155 if (!dl
&& ! global_ok
) {
5156 /* not enough dedicated spares, try global */
5164 /* No spares found */
5166 /* Now 'rv' has a list of devices to return.
5167 * Create a metadata_update record to update the
5168 * phys_refnum and lba_offset values
5170 vc
= find_vdcr(ddf
, a
->info
.container_member
, rv
->disk
.raid_disk
,
5175 mu
= xmalloc(sizeof(*mu
));
5176 if (posix_memalign(&mu
->space
, 512, sizeof(struct vcl
)) != 0) {
5181 mu
->len
= ddf
->conf_rec_len
* 512 * vcl
->conf
.sec_elmnt_count
;
5182 mu
->buf
= xmalloc(mu
->len
);
5184 mu
->space_list
= NULL
;
5185 mu
->next
= *updates
;
5186 memcpy(mu
->buf
, &vcl
->conf
, ddf
->conf_rec_len
* 512);
5187 for (j
= 1; j
< vcl
->conf
.sec_elmnt_count
; j
++)
5188 memcpy(mu
->buf
+ j
* ddf
->conf_rec_len
* 512,
5189 vcl
->other_bvds
[j
-1], ddf
->conf_rec_len
* 512);
5191 vc
= (struct vd_config
*)mu
->buf
;
5192 for (di
= rv
; di
; di
= di
->next
) {
5193 unsigned int i_sec
, i_prim
;
5194 i_sec
= di
->disk
.raid_disk
5195 / be16_to_cpu(vcl
->conf
.prim_elmnt_count
);
5196 i_prim
= di
->disk
.raid_disk
5197 % be16_to_cpu(vcl
->conf
.prim_elmnt_count
);
5198 vc
= (struct vd_config
*)(mu
->buf
5199 + i_sec
* ddf
->conf_rec_len
* 512);
5200 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
5201 if (dl
->major
== di
->disk
.major
5202 && dl
->minor
== di
->disk
.minor
)
5204 if (!dl
|| dl
->pdnum
< 0) {
5205 pr_err("%s: BUG: can't find disk %d (%d/%d)\n",
5206 __func__
, di
->disk
.raid_disk
,
5207 di
->disk
.major
, di
->disk
.minor
);
5210 vc
->phys_refnum
[i_prim
] = ddf
->phys
->entries
[dl
->pdnum
].refnum
;
5211 LBA_OFFSET(ddf
, vc
)[i_prim
] = cpu_to_be64(di
->data_offset
);
5212 dprintf("BVD %u gets %u: %08x at %llu\n", i_sec
, i_prim
,
5213 be32_to_cpu(vc
->phys_refnum
[i_prim
]),
5214 be64_to_cpu(LBA_OFFSET(ddf
, vc
)[i_prim
]));
5219 #endif /* MDASSEMBLE */
5221 static int ddf_level_to_layout(int level
)
5228 return ALGORITHM_LEFT_SYMMETRIC
;
5230 return ALGORITHM_ROTATING_N_CONTINUE
;
5238 static void default_geometry_ddf(struct supertype
*st
, int *level
, int *layout
, int *chunk
)
5240 if (level
&& *level
== UnSet
)
5241 *level
= LEVEL_CONTAINER
;
5243 if (level
&& layout
&& *layout
== UnSet
)
5244 *layout
= ddf_level_to_layout(*level
);
5247 struct superswitch super_ddf
= {
5249 .examine_super
= examine_super_ddf
,
5250 .brief_examine_super
= brief_examine_super_ddf
,
5251 .brief_examine_subarrays
= brief_examine_subarrays_ddf
,
5252 .export_examine_super
= export_examine_super_ddf
,
5253 .detail_super
= detail_super_ddf
,
5254 .brief_detail_super
= brief_detail_super_ddf
,
5255 .validate_geometry
= validate_geometry_ddf
,
5256 .write_init_super
= write_init_super_ddf
,
5257 .add_to_super
= add_to_super_ddf
,
5258 .remove_from_super
= remove_from_super_ddf
,
5259 .load_container
= load_container_ddf
,
5260 .copy_metadata
= copy_metadata_ddf
,
5261 .kill_subarray
= kill_subarray_ddf
,
5263 .match_home
= match_home_ddf
,
5264 .uuid_from_super
= uuid_from_super_ddf
,
5265 .getinfo_super
= getinfo_super_ddf
,
5266 .update_super
= update_super_ddf
,
5268 .avail_size
= avail_size_ddf
,
5270 .compare_super
= compare_super_ddf
,
5272 .load_super
= load_super_ddf
,
5273 .init_super
= init_super_ddf
,
5274 .store_super
= store_super_ddf
,
5275 .free_super
= free_super_ddf
,
5276 .match_metadata_desc
= match_metadata_desc_ddf
,
5277 .container_content
= container_content_ddf
,
5278 .default_geometry
= default_geometry_ddf
,
5284 .open_new
= ddf_open_new
,
5285 .set_array_state
= ddf_set_array_state
,
5286 .set_disk
= ddf_set_disk
,
5287 .sync_metadata
= ddf_sync_metadata
,
5288 .process_update
= ddf_process_update
,
5289 .prepare_update
= ddf_prepare_update
,
5290 .activate_spare
= ddf_activate_spare
,