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
35 /* a non-official T10 name for creation GUIDs */
36 static char T10
[] = "Linux-MD";
38 /* DDF timestamps are 1980 based, so we need to add
39 * second-in-decade-of-seventies to convert to linux timestamps.
40 * 10 years with 2 leap years.
42 #define DECADE (3600*24*(365*10+2))
45 const unsigned char *buf
,
48 #define DDF_NOTFOUND (~0U)
49 #define DDF_CONTAINER (DDF_NOTFOUND-1)
51 /* Default for safe_mode_delay. Same value as for IMSM.
53 static const int DDF_SAFE_MODE_DELAY
= 4000;
55 /* The DDF metadata handling.
56 * DDF metadata lives at the end of the device.
57 * The last 512 byte block provides an 'anchor' which is used to locate
58 * the rest of the metadata which usually lives immediately behind the anchor.
61 * - all multibyte numeric fields are bigendian.
62 * - all strings are space padded.
66 typedef struct __be16
{
69 #define be16_eq(x, y) ((x)._v16 == (y)._v16)
70 #define be16_and(x, y) ((x)._v16 & (y)._v16)
71 #define be16_or(x, y) ((x)._v16 | (y)._v16)
72 #define be16_clear(x, y) ((x)._v16 &= ~(y)._v16)
73 #define be16_set(x, y) ((x)._v16 |= (y)._v16)
75 typedef struct __be32
{
78 #define be32_eq(x, y) ((x)._v32 == (y)._v32)
80 typedef struct __be64
{
83 #define be64_eq(x, y) ((x)._v64 == (y)._v64)
85 #define be16_to_cpu(be) __be16_to_cpu((be)._v16)
86 static inline be16
cpu_to_be16(__u16 x
)
88 be16 be
= { ._v16
= __cpu_to_be16(x
) };
92 #define be32_to_cpu(be) __be32_to_cpu((be)._v32)
93 static inline be32
cpu_to_be32(__u32 x
)
95 be32 be
= { ._v32
= __cpu_to_be32(x
) };
99 #define be64_to_cpu(be) __be64_to_cpu((be)._v64)
100 static inline be64
cpu_to_be64(__u64 x
)
102 be64 be
= { ._v64
= __cpu_to_be64(x
) };
106 /* Primary Raid Level (PRL) */
107 #define DDF_RAID0 0x00
108 #define DDF_RAID1 0x01
109 #define DDF_RAID3 0x03
110 #define DDF_RAID4 0x04
111 #define DDF_RAID5 0x05
112 #define DDF_RAID1E 0x11
113 #define DDF_JBOD 0x0f
114 #define DDF_CONCAT 0x1f
115 #define DDF_RAID5E 0x15
116 #define DDF_RAID5EE 0x25
117 #define DDF_RAID6 0x06
119 /* Raid Level Qualifier (RLQ) */
120 #define DDF_RAID0_SIMPLE 0x00
121 #define DDF_RAID1_SIMPLE 0x00 /* just 2 devices in this plex */
122 #define DDF_RAID1_MULTI 0x01 /* exactly 3 devices in this plex */
123 #define DDF_RAID3_0 0x00 /* parity in first extent */
124 #define DDF_RAID3_N 0x01 /* parity in last extent */
125 #define DDF_RAID4_0 0x00 /* parity in first extent */
126 #define DDF_RAID4_N 0x01 /* parity in last extent */
127 /* these apply to raid5e and raid5ee as well */
128 #define DDF_RAID5_0_RESTART 0x00 /* same as 'right asymmetric' - layout 1 */
129 #define DDF_RAID6_0_RESTART 0x01 /* raid6 different from raid5 here!!! */
130 #define DDF_RAID5_N_RESTART 0x02 /* same as 'left asymmetric' - layout 0 */
131 #define DDF_RAID5_N_CONTINUE 0x03 /* same as 'left symmetric' - layout 2 */
133 #define DDF_RAID1E_ADJACENT 0x00 /* raid10 nearcopies==2 */
134 #define DDF_RAID1E_OFFSET 0x01 /* raid10 offsetcopies==2 */
136 /* Secondary RAID Level (SRL) */
137 #define DDF_2STRIPED 0x00 /* This is weirder than RAID0 !! */
138 #define DDF_2MIRRORED 0x01
139 #define DDF_2CONCAT 0x02
140 #define DDF_2SPANNED 0x03 /* This is also weird - be careful */
143 #define DDF_HEADER_MAGIC cpu_to_be32(0xDE11DE11)
144 #define DDF_CONTROLLER_MAGIC cpu_to_be32(0xAD111111)
145 #define DDF_PHYS_RECORDS_MAGIC cpu_to_be32(0x22222222)
146 #define DDF_PHYS_DATA_MAGIC cpu_to_be32(0x33333333)
147 #define DDF_VIRT_RECORDS_MAGIC cpu_to_be32(0xDDDDDDDD)
148 #define DDF_VD_CONF_MAGIC cpu_to_be32(0xEEEEEEEE)
149 #define DDF_SPARE_ASSIGN_MAGIC cpu_to_be32(0x55555555)
150 #define DDF_VU_CONF_MAGIC cpu_to_be32(0x88888888)
151 #define DDF_VENDOR_LOG_MAGIC cpu_to_be32(0x01dBEEF0)
152 #define DDF_BBM_LOG_MAGIC cpu_to_be32(0xABADB10C)
154 #define DDF_GUID_LEN 24
155 #define DDF_REVISION_0 "01.00.00"
156 #define DDF_REVISION_2 "01.02.00"
159 be32 magic
; /* DDF_HEADER_MAGIC */
161 char guid
[DDF_GUID_LEN
];
162 char revision
[8]; /* 01.02.00 */
163 be32 seq
; /* starts at '1' */
168 __u8 pad0
; /* 0xff */
169 __u8 pad1
[12]; /* 12 * 0xff */
170 /* 64 bytes so far */
171 __u8 header_ext
[32]; /* reserved: fill with 0xff */
175 __u8 pad2
[3]; /* 0xff */
176 be32 workspace_len
; /* sectors for vendor space -
177 * at least 32768(sectors) */
179 be16 max_pd_entries
; /* one of 15, 63, 255, 1023, 4095 */
180 be16 max_vd_entries
; /* 2^(4,6,8,10,12)-1 : i.e. as above */
181 be16 max_partitions
; /* i.e. max num of configuration
182 record entries per disk */
183 be16 config_record_len
; /* 1 +ROUNDUP(max_primary_element_entries
185 be16 max_primary_element_entries
; /* 16, 64, 256, 1024, or 4096 */
186 __u8 pad3
[54]; /* 0xff */
187 /* 192 bytes so far */
188 be32 controller_section_offset
;
189 be32 controller_section_length
;
190 be32 phys_section_offset
;
191 be32 phys_section_length
;
192 be32 virt_section_offset
;
193 be32 virt_section_length
;
194 be32 config_section_offset
;
195 be32 config_section_length
;
196 be32 data_section_offset
;
197 be32 data_section_length
;
198 be32 bbm_section_offset
;
199 be32 bbm_section_length
;
200 be32 diag_space_offset
;
201 be32 diag_space_length
;
204 /* 256 bytes so far */
205 __u8 pad4
[256]; /* 0xff */
209 #define DDF_HEADER_ANCHOR 0x00
210 #define DDF_HEADER_PRIMARY 0x01
211 #define DDF_HEADER_SECONDARY 0x02
213 /* The content of the 'controller section' - global scope */
214 struct ddf_controller_data
{
215 be32 magic
; /* DDF_CONTROLLER_MAGIC */
217 char guid
[DDF_GUID_LEN
];
218 struct controller_type
{
225 __u8 pad
[8]; /* 0xff */
226 __u8 vendor_data
[448];
229 /* The content of phys_section - global scope */
231 be32 magic
; /* DDF_PHYS_RECORDS_MAGIC */
233 be16 used_pdes
; /* This is a counter, not a max - the list
234 * of used entries may not be dense */
237 struct phys_disk_entry
{
238 char guid
[DDF_GUID_LEN
];
242 be64 config_size
; /* DDF structures must be after here */
243 char path
[18]; /* Another horrible structure really
244 * but is "used for information
250 /* phys_disk_entry.type is a bitmap - bigendian remember */
251 #define DDF_Forced_PD_GUID 1
252 #define DDF_Active_in_VD 2
253 #define DDF_Global_Spare 4 /* VD_CONF records are ignored */
254 #define DDF_Spare 8 /* overrides Global_spare */
255 #define DDF_Foreign 16
256 #define DDF_Legacy 32 /* no DDF on this device */
258 #define DDF_Interface_mask 0xf00
259 #define DDF_Interface_SCSI 0x100
260 #define DDF_Interface_SAS 0x200
261 #define DDF_Interface_SATA 0x300
262 #define DDF_Interface_FC 0x400
264 /* phys_disk_entry.state is a bigendian bitmap */
266 #define DDF_Failed 2 /* overrides 1,4,8 */
267 #define DDF_Rebuilding 4
268 #define DDF_Transition 8
270 #define DDF_ReadErrors 32
271 #define DDF_Missing 64
273 /* The content of the virt_section global scope */
274 struct virtual_disk
{
275 be32 magic
; /* DDF_VIRT_RECORDS_MAGIC */
280 struct virtual_entry
{
281 char guid
[DDF_GUID_LEN
];
283 __u16 pad0
; /* 0xffff */
293 /* virtual_entry.type is a bitmap - bigendian */
295 #define DDF_Enforce_Groups 2
296 #define DDF_Unicode 4
297 #define DDF_Owner_Valid 8
299 /* virtual_entry.state is a bigendian bitmap */
300 #define DDF_state_mask 0x7
301 #define DDF_state_optimal 0x0
302 #define DDF_state_degraded 0x1
303 #define DDF_state_deleted 0x2
304 #define DDF_state_missing 0x3
305 #define DDF_state_failed 0x4
306 #define DDF_state_part_optimal 0x5
308 #define DDF_state_morphing 0x8
309 #define DDF_state_inconsistent 0x10
311 /* virtual_entry.init_state is a bigendian bitmap */
312 #define DDF_initstate_mask 0x03
313 #define DDF_init_not 0x00
314 #define DDF_init_quick 0x01 /* initialisation is progress.
315 * i.e. 'state_inconsistent' */
316 #define DDF_init_full 0x02
318 #define DDF_access_mask 0xc0
319 #define DDF_access_rw 0x00
320 #define DDF_access_ro 0x80
321 #define DDF_access_blocked 0xc0
323 /* The content of the config_section - local scope
324 * It has multiple records each config_record_len sectors
325 * They can be vd_config or spare_assign
329 be32 magic
; /* DDF_VD_CONF_MAGIC */
331 char guid
[DDF_GUID_LEN
];
335 be16 prim_elmnt_count
;
336 __u8 chunk_shift
; /* 0 == 512, 1==1024 etc */
339 __u8 sec_elmnt_count
;
342 be64 blocks
; /* blocks per component could be different
343 * on different component devices...(only
344 * for concat I hope) */
345 be64 array_blocks
; /* blocks in array */
347 be32 spare_refs
[8]; /* This is used to detect missing spares.
348 * As we don't have an interface for that
349 * the values are ignored.
356 __u8 v0
[32]; /* reserved- 0xff */
357 __u8 v1
[32]; /* reserved- 0xff */
358 __u8 v2
[16]; /* reserved- 0xff */
359 __u8 v3
[16]; /* reserved- 0xff */
361 be32 phys_refnum
[0]; /* refnum of each disk in sequence */
362 /*__u64 lba_offset[0]; LBA offset in each phys. Note extents in a
363 bvd are always the same size */
365 #define LBA_OFFSET(ddf, vd) ((be64 *) &(vd)->phys_refnum[(ddf)->mppe])
367 /* vd_config.cache_pol[7] is a bitmap */
368 #define DDF_cache_writeback 1 /* else writethrough */
369 #define DDF_cache_wadaptive 2 /* only applies if writeback */
370 #define DDF_cache_readahead 4
371 #define DDF_cache_radaptive 8 /* only if doing read-ahead */
372 #define DDF_cache_ifnobatt 16 /* even to write cache if battery is poor */
373 #define DDF_cache_wallowed 32 /* enable write caching */
374 #define DDF_cache_rallowed 64 /* enable read caching */
376 struct spare_assign
{
377 be32 magic
; /* DDF_SPARE_ASSIGN_MAGIC */
382 be16 populated
; /* SAEs used */
383 be16 max
; /* max SAEs */
385 struct spare_assign_entry
{
386 char guid
[DDF_GUID_LEN
];
387 be16 secondary_element
;
391 /* spare_assign.type is a bitmap */
392 #define DDF_spare_dedicated 0x1 /* else global */
393 #define DDF_spare_revertible 0x2 /* else committable */
394 #define DDF_spare_active 0x4 /* else not active */
395 #define DDF_spare_affinity 0x8 /* enclosure affinity */
397 /* The data_section contents - local scope */
399 be32 magic
; /* DDF_PHYS_DATA_MAGIC */
401 char guid
[DDF_GUID_LEN
];
402 be32 refnum
; /* crc of some magic drive data ... */
403 __u8 forced_ref
; /* set when above was not result of magic */
404 __u8 forced_guid
; /* set if guid was forced rather than magic */
409 /* bbm_section content */
410 struct bad_block_log
{
417 struct mapped_block
{
418 be64 defective_start
;
419 be32 replacement_start
;
425 /* Struct for internally holding ddf structures */
426 /* The DDF structure stored on each device is potentially
427 * quite different, as some data is global and some is local.
428 * The global data is:
431 * - Physical disk records
432 * - Virtual disk records
434 * - Configuration records
435 * - Physical Disk data section
436 * ( and Bad block and vendor which I don't care about yet).
438 * The local data is parsed into separate lists as it is read
439 * and reconstructed for writing. This means that we only need
440 * to make config changes once and they are automatically
441 * propagated to all devices.
442 * The global (config and disk data) records are each in a list
443 * of separate data structures. When writing we find the entry
444 * or entries applicable to the particular device.
447 struct ddf_header anchor
, primary
, secondary
;
448 struct ddf_controller_data controller
;
449 struct ddf_header
*active
;
450 struct phys_disk
*phys
;
451 struct virtual_disk
*virt
;
454 unsigned int max_part
, mppe
, conf_rec_len
;
462 unsigned int vcnum
; /* index into ->virt */
463 /* For an array with a secondary level there are
464 * multiple vd_config structures, all with the same
465 * guid but with different sec_elmnt_seq.
466 * One of these structures is in 'conf' below.
467 * The others are in other_bvds, not in any
470 struct vd_config
**other_bvds
;
471 __u64
*block_sizes
; /* NULL if all the same */
474 struct vd_config conf
;
475 } *conflist
, *currentconf
;
484 unsigned long long size
; /* sectors */
485 be64 primary_lba
; /* sectors */
486 be64 secondary_lba
; /* sectors */
487 be64 workspace_lba
; /* sectors */
488 int pdnum
; /* index in ->phys */
489 struct spare_assign
*spare
;
490 void *mdupdate
; /* hold metadata update */
492 /* These fields used by auto-layout */
493 int raiddisk
; /* slot to fill in autolayout */
498 struct disk_data disk
;
499 struct vcl
*vlist
[0]; /* max_part in size */
504 static int load_super_ddf_all(struct supertype
*st
, int fd
,
505 void **sbp
, char *devname
);
506 static int get_svd_state(const struct ddf_super
*, const struct vcl
*);
508 validate_geometry_ddf_container(struct supertype
*st
,
509 int level
, int layout
, int raiddisks
,
510 int chunk
, unsigned long long size
,
511 unsigned long long data_offset
,
512 char *dev
, unsigned long long *freesize
,
515 static int validate_geometry_ddf_bvd(struct supertype
*st
,
516 int level
, int layout
, int raiddisks
,
517 int *chunk
, unsigned long long size
,
518 unsigned long long data_offset
,
519 char *dev
, unsigned long long *freesize
,
523 static void free_super_ddf(struct supertype
*st
);
524 static int all_ff(const char *guid
);
525 static unsigned int get_pd_index_from_refnum(const struct vcl
*vc
,
526 be32 refnum
, unsigned int nmax
,
527 const struct vd_config
**bvd
,
529 static void getinfo_super_ddf(struct supertype
*st
, struct mdinfo
*info
, char *map
);
530 static void uuid_from_ddf_guid(const char *guid
, int uuid
[4]);
531 static void uuid_from_super_ddf(struct supertype
*st
, int uuid
[4]);
532 static void _ddf_array_name(char *name
, const struct ddf_super
*ddf
, int i
);
533 static void getinfo_super_ddf_bvd(struct supertype
*st
, struct mdinfo
*info
, char *map
);
534 static int init_super_ddf_bvd(struct supertype
*st
,
535 mdu_array_info_t
*info
,
536 unsigned long long size
,
537 char *name
, char *homehost
,
538 int *uuid
, unsigned long long data_offset
);
541 static void pr_state(struct ddf_super
*ddf
, const char *msg
)
544 dprintf("%s/%s: ", __func__
, msg
);
545 for (i
= 0; i
< be16_to_cpu(ddf
->active
->max_vd_entries
); i
++) {
546 if (all_ff(ddf
->virt
->entries
[i
].guid
))
548 dprintf("%u(s=%02x i=%02x) ", i
,
549 ddf
->virt
->entries
[i
].state
,
550 ddf
->virt
->entries
[i
].init_state
);
555 static void pr_state(const struct ddf_super
*ddf
, const char *msg
) {}
558 static void _ddf_set_updates_pending(struct ddf_super
*ddf
, struct vd_config
*vc
,
562 vc
->timestamp
= cpu_to_be32(time(0)-DECADE
);
563 vc
->seqnum
= cpu_to_be32(be32_to_cpu(vc
->seqnum
) + 1);
565 if (ddf
->updates_pending
)
567 ddf
->updates_pending
= 1;
568 ddf
->active
->seq
= cpu_to_be32((be32_to_cpu(ddf
->active
->seq
)+1));
572 #define ddf_set_updates_pending(x,v) _ddf_set_updates_pending((x), (v), __func__)
574 static be32
calc_crc(void *buf
, int len
)
576 /* crcs are always at the same place as in the ddf_header */
577 struct ddf_header
*ddf
= buf
;
578 be32 oldcrc
= ddf
->crc
;
580 ddf
->crc
= cpu_to_be32(0xffffffff);
582 newcrc
= crc32(0, buf
, len
);
584 /* The crc is stored (like everything) bigendian, so convert
585 * here for simplicity
587 return cpu_to_be32(newcrc
);
590 #define DDF_INVALID_LEVEL 0xff
591 #define DDF_NO_SECONDARY 0xff
592 static int err_bad_md_layout(const mdu_array_info_t
*array
)
594 pr_err("RAID%d layout %x with %d disks is unsupported for DDF\n",
595 array
->level
, array
->layout
, array
->raid_disks
);
599 static int layout_md2ddf(const mdu_array_info_t
*array
,
600 struct vd_config
*conf
)
602 be16 prim_elmnt_count
= cpu_to_be16(array
->raid_disks
);
603 __u8 prl
= DDF_INVALID_LEVEL
, rlq
= 0;
604 __u8 sec_elmnt_count
= 1;
605 __u8 srl
= DDF_NO_SECONDARY
;
607 switch (array
->level
) {
612 rlq
= DDF_RAID0_SIMPLE
;
616 switch (array
->raid_disks
) {
618 rlq
= DDF_RAID1_SIMPLE
;
621 rlq
= DDF_RAID1_MULTI
;
624 return err_bad_md_layout(array
);
629 if (array
->layout
!= 0)
630 return err_bad_md_layout(array
);
635 switch (array
->layout
) {
636 case ALGORITHM_LEFT_ASYMMETRIC
:
637 rlq
= DDF_RAID5_N_RESTART
;
639 case ALGORITHM_RIGHT_ASYMMETRIC
:
640 rlq
= DDF_RAID5_0_RESTART
;
642 case ALGORITHM_LEFT_SYMMETRIC
:
643 rlq
= DDF_RAID5_N_CONTINUE
;
645 case ALGORITHM_RIGHT_SYMMETRIC
:
646 /* not mentioned in standard */
648 return err_bad_md_layout(array
);
653 switch (array
->layout
) {
654 case ALGORITHM_ROTATING_N_RESTART
:
655 rlq
= DDF_RAID5_N_RESTART
;
657 case ALGORITHM_ROTATING_ZERO_RESTART
:
658 rlq
= DDF_RAID6_0_RESTART
;
660 case ALGORITHM_ROTATING_N_CONTINUE
:
661 rlq
= DDF_RAID5_N_CONTINUE
;
664 return err_bad_md_layout(array
);
669 if (array
->raid_disks
% 2 == 0 && array
->layout
== 0x102) {
670 rlq
= DDF_RAID1_SIMPLE
;
671 prim_elmnt_count
= cpu_to_be16(2);
672 sec_elmnt_count
= array
->raid_disks
/ 2;
675 } else if (array
->raid_disks
% 3 == 0
676 && array
->layout
== 0x103) {
677 rlq
= DDF_RAID1_MULTI
;
678 prim_elmnt_count
= cpu_to_be16(3);
679 sec_elmnt_count
= array
->raid_disks
/ 3;
682 } else if (array
->layout
== 0x201) {
684 rlq
= DDF_RAID1E_OFFSET
;
685 } else if (array
->layout
== 0x102) {
687 rlq
= DDF_RAID1E_ADJACENT
;
689 return err_bad_md_layout(array
);
692 return err_bad_md_layout(array
);
695 conf
->prim_elmnt_count
= prim_elmnt_count
;
698 conf
->sec_elmnt_count
= sec_elmnt_count
;
702 static int err_bad_ddf_layout(const struct vd_config
*conf
)
704 pr_err("DDF RAID %u qualifier %u with %u disks is unsupported\n",
705 conf
->prl
, conf
->rlq
, be16_to_cpu(conf
->prim_elmnt_count
));
709 static int layout_ddf2md(const struct vd_config
*conf
,
710 mdu_array_info_t
*array
)
712 int level
= LEVEL_UNSUPPORTED
;
714 int raiddisks
= be16_to_cpu(conf
->prim_elmnt_count
);
716 if (conf
->sec_elmnt_count
> 1) {
717 /* see also check_secondary() */
718 if (conf
->prl
!= DDF_RAID1
||
719 (conf
->srl
!= DDF_2STRIPED
&& conf
->srl
!= DDF_2SPANNED
)) {
720 pr_err("Unsupported secondary RAID level %u/%u\n",
721 conf
->prl
, conf
->srl
);
724 if (raiddisks
== 2 && conf
->rlq
== DDF_RAID1_SIMPLE
)
726 else if (raiddisks
== 3 && conf
->rlq
== DDF_RAID1_MULTI
)
729 return err_bad_ddf_layout(conf
);
730 raiddisks
*= conf
->sec_elmnt_count
;
737 level
= LEVEL_LINEAR
;
740 if (conf
->rlq
!= DDF_RAID0_SIMPLE
)
741 return err_bad_ddf_layout(conf
);
745 if (!((conf
->rlq
== DDF_RAID1_SIMPLE
&& raiddisks
== 2) ||
746 (conf
->rlq
== DDF_RAID1_MULTI
&& raiddisks
== 3)))
747 return err_bad_ddf_layout(conf
);
751 if (conf
->rlq
== DDF_RAID1E_ADJACENT
)
753 else if (conf
->rlq
== DDF_RAID1E_OFFSET
)
756 return err_bad_ddf_layout(conf
);
760 if (conf
->rlq
!= DDF_RAID4_N
)
761 return err_bad_ddf_layout(conf
);
766 case DDF_RAID5_N_RESTART
:
767 layout
= ALGORITHM_LEFT_ASYMMETRIC
;
769 case DDF_RAID5_0_RESTART
:
770 layout
= ALGORITHM_RIGHT_ASYMMETRIC
;
772 case DDF_RAID5_N_CONTINUE
:
773 layout
= ALGORITHM_LEFT_SYMMETRIC
;
776 return err_bad_ddf_layout(conf
);
782 case DDF_RAID5_N_RESTART
:
783 layout
= ALGORITHM_ROTATING_N_RESTART
;
785 case DDF_RAID6_0_RESTART
:
786 layout
= ALGORITHM_ROTATING_ZERO_RESTART
;
788 case DDF_RAID5_N_CONTINUE
:
789 layout
= ALGORITHM_ROTATING_N_CONTINUE
;
792 return err_bad_ddf_layout(conf
);
797 return err_bad_ddf_layout(conf
);
801 array
->level
= level
;
802 array
->layout
= layout
;
803 array
->raid_disks
= raiddisks
;
807 static int load_ddf_header(int fd
, unsigned long long lba
,
808 unsigned long long size
,
810 struct ddf_header
*hdr
, struct ddf_header
*anchor
)
812 /* read a ddf header (primary or secondary) from fd/lba
813 * and check that it is consistent with anchor
815 * magic, crc, guid, rev, and LBA's header_type, and
816 * everything after header_type must be the same
821 if (lseek64(fd
, lba
<<9, 0) < 0)
824 if (read(fd
, hdr
, 512) != 512)
827 if (!be32_eq(hdr
->magic
, DDF_HEADER_MAGIC
)) {
828 pr_err("%s: bad header magic\n", __func__
);
831 if (!be32_eq(calc_crc(hdr
, 512), hdr
->crc
)) {
832 pr_err("%s: bad CRC\n", __func__
);
835 if (memcmp(anchor
->guid
, hdr
->guid
, DDF_GUID_LEN
) != 0 ||
836 memcmp(anchor
->revision
, hdr
->revision
, 8) != 0 ||
837 !be64_eq(anchor
->primary_lba
, hdr
->primary_lba
) ||
838 !be64_eq(anchor
->secondary_lba
, hdr
->secondary_lba
) ||
840 memcmp(anchor
->pad2
, hdr
->pad2
, 512 -
841 offsetof(struct ddf_header
, pad2
)) != 0) {
842 pr_err("%s: header mismatch\n", __func__
);
846 /* Looks good enough to me... */
850 static void *load_section(int fd
, struct ddf_super
*super
, void *buf
,
851 be32 offset_be
, be32 len_be
, int check
)
853 unsigned long long offset
= be32_to_cpu(offset_be
);
854 unsigned long long len
= be32_to_cpu(len_be
);
855 int dofree
= (buf
== NULL
);
858 if (len
!= 2 && len
!= 8 && len
!= 32
859 && len
!= 128 && len
!= 512)
864 if (!buf
&& posix_memalign(&buf
, 512, len
<<9) != 0)
870 if (super
->active
->type
== 1)
871 offset
+= be64_to_cpu(super
->active
->primary_lba
);
873 offset
+= be64_to_cpu(super
->active
->secondary_lba
);
875 if ((unsigned long long)lseek64(fd
, offset
<<9, 0) != (offset
<<9)) {
880 if ((unsigned long long)read(fd
, buf
, len
<<9) != (len
<<9)) {
888 static int load_ddf_headers(int fd
, struct ddf_super
*super
, char *devname
)
890 unsigned long long dsize
;
892 get_dev_size(fd
, NULL
, &dsize
);
894 if (lseek64(fd
, dsize
-512, 0) < 0) {
896 pr_err("Cannot seek to anchor block on %s: %s\n",
897 devname
, strerror(errno
));
900 if (read(fd
, &super
->anchor
, 512) != 512) {
902 pr_err("Cannot read anchor block on %s: %s\n",
903 devname
, strerror(errno
));
906 if (!be32_eq(super
->anchor
.magic
, DDF_HEADER_MAGIC
)) {
908 pr_err("no DDF anchor found on %s\n",
912 if (!be32_eq(calc_crc(&super
->anchor
, 512), super
->anchor
.crc
)) {
914 pr_err("bad CRC on anchor on %s\n",
918 if (memcmp(super
->anchor
.revision
, DDF_REVISION_0
, 8) != 0 &&
919 memcmp(super
->anchor
.revision
, DDF_REVISION_2
, 8) != 0) {
921 pr_err("can only support super revision"
922 " %.8s and earlier, not %.8s on %s\n",
923 DDF_REVISION_2
, super
->anchor
.revision
,devname
);
926 super
->active
= NULL
;
927 if (load_ddf_header(fd
, be64_to_cpu(super
->anchor
.primary_lba
),
929 &super
->primary
, &super
->anchor
) == 0) {
931 pr_err("Failed to load primary DDF header "
934 super
->active
= &super
->primary
;
936 if (load_ddf_header(fd
, be64_to_cpu(super
->anchor
.secondary_lba
),
938 &super
->secondary
, &super
->anchor
)) {
939 if (super
->active
== NULL
940 || (be32_to_cpu(super
->primary
.seq
)
941 < be32_to_cpu(super
->secondary
.seq
) &&
942 !super
->secondary
.openflag
)
943 || (be32_to_cpu(super
->primary
.seq
)
944 == be32_to_cpu(super
->secondary
.seq
) &&
945 super
->primary
.openflag
&& !super
->secondary
.openflag
)
947 super
->active
= &super
->secondary
;
948 } else if (devname
&&
949 be64_to_cpu(super
->anchor
.secondary_lba
) != ~(__u64
)0)
950 pr_err("Failed to load secondary DDF header on %s\n",
952 if (super
->active
== NULL
)
957 static int load_ddf_global(int fd
, struct ddf_super
*super
, char *devname
)
960 ok
= load_section(fd
, super
, &super
->controller
,
961 super
->active
->controller_section_offset
,
962 super
->active
->controller_section_length
,
964 super
->phys
= load_section(fd
, super
, NULL
,
965 super
->active
->phys_section_offset
,
966 super
->active
->phys_section_length
,
968 super
->pdsize
= be32_to_cpu(super
->active
->phys_section_length
) * 512;
970 super
->virt
= load_section(fd
, super
, NULL
,
971 super
->active
->virt_section_offset
,
972 super
->active
->virt_section_length
,
974 super
->vdsize
= be32_to_cpu(super
->active
->virt_section_length
) * 512;
984 super
->conflist
= NULL
;
987 super
->max_part
= be16_to_cpu(super
->active
->max_partitions
);
988 super
->mppe
= be16_to_cpu(super
->active
->max_primary_element_entries
);
989 super
->conf_rec_len
= be16_to_cpu(super
->active
->config_record_len
);
993 #define DDF_UNUSED_BVD 0xff
994 static int alloc_other_bvds(const struct ddf_super
*ddf
, struct vcl
*vcl
)
996 unsigned int n_vds
= vcl
->conf
.sec_elmnt_count
- 1;
997 unsigned int i
, vdsize
;
1000 vcl
->other_bvds
= NULL
;
1003 vdsize
= ddf
->conf_rec_len
* 512;
1004 if (posix_memalign(&p
, 512, n_vds
*
1005 (vdsize
+ sizeof(struct vd_config
*))) != 0)
1007 vcl
->other_bvds
= (struct vd_config
**) (p
+ n_vds
* vdsize
);
1008 for (i
= 0; i
< n_vds
; i
++) {
1009 vcl
->other_bvds
[i
] = p
+ i
* vdsize
;
1010 memset(vcl
->other_bvds
[i
], 0, vdsize
);
1011 vcl
->other_bvds
[i
]->sec_elmnt_seq
= DDF_UNUSED_BVD
;
1016 static void add_other_bvd(struct vcl
*vcl
, struct vd_config
*vd
,
1020 for (i
= 0; i
< vcl
->conf
.sec_elmnt_count
-1; i
++)
1021 if (vcl
->other_bvds
[i
]->sec_elmnt_seq
== vd
->sec_elmnt_seq
)
1024 if (i
< vcl
->conf
.sec_elmnt_count
-1) {
1025 if (be32_to_cpu(vd
->seqnum
) <=
1026 be32_to_cpu(vcl
->other_bvds
[i
]->seqnum
))
1029 for (i
= 0; i
< vcl
->conf
.sec_elmnt_count
-1; i
++)
1030 if (vcl
->other_bvds
[i
]->sec_elmnt_seq
== DDF_UNUSED_BVD
)
1032 if (i
== vcl
->conf
.sec_elmnt_count
-1) {
1033 pr_err("no space for sec level config %u, count is %u\n",
1034 vd
->sec_elmnt_seq
, vcl
->conf
.sec_elmnt_count
);
1038 memcpy(vcl
->other_bvds
[i
], vd
, len
);
1041 static int load_ddf_local(int fd
, struct ddf_super
*super
,
1042 char *devname
, int keep
)
1048 unsigned int confsec
;
1050 unsigned int max_virt_disks
=
1051 be16_to_cpu(super
->active
->max_vd_entries
);
1052 unsigned long long dsize
;
1054 /* First the local disk info */
1055 if (posix_memalign((void**)&dl
, 512,
1057 (super
->max_part
) * sizeof(dl
->vlist
[0])) != 0) {
1058 pr_err("%s could not allocate disk info buffer\n",
1063 load_section(fd
, super
, &dl
->disk
,
1064 super
->active
->data_section_offset
,
1065 super
->active
->data_section_length
,
1067 dl
->devname
= devname
? xstrdup(devname
) : NULL
;
1070 dl
->major
= major(stb
.st_rdev
);
1071 dl
->minor
= minor(stb
.st_rdev
);
1072 dl
->next
= super
->dlist
;
1073 dl
->fd
= keep
? fd
: -1;
1076 if (get_dev_size(fd
, devname
, &dsize
))
1077 dl
->size
= dsize
>> 9;
1078 /* If the disks have different sizes, the LBAs will differ
1079 * between phys disks.
1080 * At this point here, the values in super->active must be valid
1081 * for this phys disk. */
1082 dl
->primary_lba
= super
->active
->primary_lba
;
1083 dl
->secondary_lba
= super
->active
->secondary_lba
;
1084 dl
->workspace_lba
= super
->active
->workspace_lba
;
1086 for (i
= 0 ; i
< super
->max_part
; i
++)
1087 dl
->vlist
[i
] = NULL
;
1090 for (i
= 0; i
< be16_to_cpu(super
->active
->max_pd_entries
); i
++)
1091 if (memcmp(super
->phys
->entries
[i
].guid
,
1092 dl
->disk
.guid
, DDF_GUID_LEN
) == 0)
1095 /* Now the config list. */
1096 /* 'conf' is an array of config entries, some of which are
1097 * probably invalid. Those which are good need to be copied into
1101 conf
= load_section(fd
, super
, super
->conf
,
1102 super
->active
->config_section_offset
,
1103 super
->active
->config_section_length
,
1108 confsec
< be32_to_cpu(super
->active
->config_section_length
);
1109 confsec
+= super
->conf_rec_len
) {
1110 struct vd_config
*vd
=
1111 (struct vd_config
*)((char*)conf
+ confsec
*512);
1114 if (be32_eq(vd
->magic
, DDF_SPARE_ASSIGN_MAGIC
)) {
1117 if (posix_memalign((void**)&dl
->spare
, 512,
1118 super
->conf_rec_len
*512) != 0) {
1119 pr_err("%s could not allocate spare info buf\n",
1124 memcpy(dl
->spare
, vd
, super
->conf_rec_len
*512);
1127 if (!be32_eq(vd
->magic
, DDF_VD_CONF_MAGIC
))
1128 /* Must be vendor-unique - I cannot handle those */
1131 for (vcl
= super
->conflist
; vcl
; vcl
= vcl
->next
) {
1132 if (memcmp(vcl
->conf
.guid
,
1133 vd
->guid
, DDF_GUID_LEN
) == 0)
1138 dl
->vlist
[vnum
++] = vcl
;
1139 if (vcl
->other_bvds
!= NULL
&&
1140 vcl
->conf
.sec_elmnt_seq
!= vd
->sec_elmnt_seq
) {
1141 add_other_bvd(vcl
, vd
, super
->conf_rec_len
*512);
1144 if (be32_to_cpu(vd
->seqnum
) <=
1145 be32_to_cpu(vcl
->conf
.seqnum
))
1148 if (posix_memalign((void**)&vcl
, 512,
1149 (super
->conf_rec_len
*512 +
1150 offsetof(struct vcl
, conf
))) != 0) {
1151 pr_err("%s could not allocate vcl buf\n",
1155 vcl
->next
= super
->conflist
;
1156 vcl
->block_sizes
= NULL
; /* FIXME not for CONCAT */
1157 vcl
->conf
.sec_elmnt_count
= vd
->sec_elmnt_count
;
1158 if (alloc_other_bvds(super
, vcl
) != 0) {
1159 pr_err("%s could not allocate other bvds\n",
1164 super
->conflist
= vcl
;
1165 dl
->vlist
[vnum
++] = vcl
;
1167 memcpy(&vcl
->conf
, vd
, super
->conf_rec_len
*512);
1168 for (i
=0; i
< max_virt_disks
; i
++)
1169 if (memcmp(super
->virt
->entries
[i
].guid
,
1170 vcl
->conf
.guid
, DDF_GUID_LEN
)==0)
1172 if (i
< max_virt_disks
)
1179 static int load_super_ddf(struct supertype
*st
, int fd
,
1182 unsigned long long dsize
;
1183 struct ddf_super
*super
;
1186 if (get_dev_size(fd
, devname
, &dsize
) == 0)
1189 if (test_partition(fd
))
1190 /* DDF is not allowed on partitions */
1193 /* 32M is a lower bound */
1194 if (dsize
<= 32*1024*1024) {
1196 pr_err("%s is too small for ddf: "
1197 "size is %llu sectors.\n",
1203 pr_err("%s is an odd size for ddf: "
1204 "size is %llu bytes.\n",
1211 if (posix_memalign((void**)&super
, 512, sizeof(*super
))!= 0) {
1212 pr_err("malloc of %zu failed.\n",
1216 memset(super
, 0, sizeof(*super
));
1218 rv
= load_ddf_headers(fd
, super
, devname
);
1224 /* Have valid headers and have chosen the best. Let's read in the rest*/
1226 rv
= load_ddf_global(fd
, super
, devname
);
1230 pr_err("Failed to load all information "
1231 "sections on %s\n", devname
);
1236 rv
= load_ddf_local(fd
, super
, devname
, 0);
1240 pr_err("Failed to load all information "
1241 "sections on %s\n", devname
);
1246 /* Should possibly check the sections .... */
1249 if (st
->ss
== NULL
) {
1250 st
->ss
= &super_ddf
;
1251 st
->minor_version
= 0;
1258 static void free_super_ddf(struct supertype
*st
)
1260 struct ddf_super
*ddf
= st
->sb
;
1266 while (ddf
->conflist
) {
1267 struct vcl
*v
= ddf
->conflist
;
1268 ddf
->conflist
= v
->next
;
1270 free(v
->block_sizes
);
1273 v->other_bvds[0] points to beginning of buffer,
1274 see alloc_other_bvds()
1276 free(v
->other_bvds
[0]);
1279 while (ddf
->dlist
) {
1280 struct dl
*d
= ddf
->dlist
;
1281 ddf
->dlist
= d
->next
;
1288 while (ddf
->add_list
) {
1289 struct dl
*d
= ddf
->add_list
;
1290 ddf
->add_list
= d
->next
;
1301 static struct supertype
*match_metadata_desc_ddf(char *arg
)
1303 /* 'ddf' only supports containers */
1304 struct supertype
*st
;
1305 if (strcmp(arg
, "ddf") != 0 &&
1306 strcmp(arg
, "default") != 0
1310 st
= xcalloc(1, sizeof(*st
));
1311 st
->ss
= &super_ddf
;
1313 st
->minor_version
= 0;
1320 static mapping_t ddf_state
[] = {
1326 { "Partially Optimal", 5},
1332 static mapping_t ddf_init_state
[] = {
1333 { "Not Initialised", 0},
1334 { "QuickInit in Progress", 1},
1335 { "Fully Initialised", 2},
1339 static mapping_t ddf_access
[] = {
1343 { "Blocked (no access)", 3},
1347 static mapping_t ddf_level
[] = {
1348 { "RAID0", DDF_RAID0
},
1349 { "RAID1", DDF_RAID1
},
1350 { "RAID3", DDF_RAID3
},
1351 { "RAID4", DDF_RAID4
},
1352 { "RAID5", DDF_RAID5
},
1353 { "RAID1E",DDF_RAID1E
},
1354 { "JBOD", DDF_JBOD
},
1355 { "CONCAT",DDF_CONCAT
},
1356 { "RAID5E",DDF_RAID5E
},
1357 { "RAID5EE",DDF_RAID5EE
},
1358 { "RAID6", DDF_RAID6
},
1361 static mapping_t ddf_sec_level
[] = {
1362 { "Striped", DDF_2STRIPED
},
1363 { "Mirrored", DDF_2MIRRORED
},
1364 { "Concat", DDF_2CONCAT
},
1365 { "Spanned", DDF_2SPANNED
},
1370 static int all_ff(const char *guid
)
1373 for (i
= 0; i
< DDF_GUID_LEN
; i
++)
1374 if (guid
[i
] != (char)0xff)
1379 static const char *guid_str(const char *guid
)
1381 static char buf
[DDF_GUID_LEN
*2+1];
1384 for (i
= 0; i
< DDF_GUID_LEN
; i
++) {
1385 unsigned char c
= guid
[i
];
1386 if (c
>= 32 && c
< 127)
1387 p
+= sprintf(p
, "%c", c
);
1389 p
+= sprintf(p
, "%02x", c
);
1392 return (const char *) buf
;
1396 static void print_guid(char *guid
, int tstamp
)
1398 /* A GUIDs are part (or all) ASCII and part binary.
1399 * They tend to be space padded.
1400 * We print the GUID in HEX, then in parentheses add
1401 * any initial ASCII sequence, and a possible
1402 * time stamp from bytes 16-19
1404 int l
= DDF_GUID_LEN
;
1407 for (i
=0 ; i
<DDF_GUID_LEN
; i
++) {
1408 if ((i
&3)==0 && i
!= 0) printf(":");
1409 printf("%02X", guid
[i
]&255);
1413 while (l
&& guid
[l
-1] == ' ')
1415 for (i
=0 ; i
<l
; i
++) {
1416 if (guid
[i
] >= 0x20 && guid
[i
] < 0x7f)
1417 fputc(guid
[i
], stdout
);
1422 time_t then
= __be32_to_cpu(*(__u32
*)(guid
+16)) + DECADE
;
1425 tm
= localtime(&then
);
1426 strftime(tbuf
, 100, " %D %T",tm
);
1427 fputs(tbuf
, stdout
);
1432 static void examine_vd(int n
, struct ddf_super
*sb
, char *guid
)
1434 int crl
= sb
->conf_rec_len
;
1437 for (vcl
= sb
->conflist
; vcl
; vcl
= vcl
->next
) {
1439 struct vd_config
*vc
= &vcl
->conf
;
1441 if (!be32_eq(calc_crc(vc
, crl
*512), vc
->crc
))
1443 if (memcmp(vc
->guid
, guid
, DDF_GUID_LEN
) != 0)
1446 /* Ok, we know about this VD, let's give more details */
1447 printf(" Raid Devices[%d] : %d (", n
,
1448 be16_to_cpu(vc
->prim_elmnt_count
));
1449 for (i
= 0; i
< be16_to_cpu(vc
->prim_elmnt_count
); i
++) {
1451 int cnt
= be16_to_cpu(sb
->phys
->max_pdes
);
1452 for (j
=0; j
<cnt
; j
++)
1453 if (be32_eq(vc
->phys_refnum
[i
],
1454 sb
->phys
->entries
[j
].refnum
))
1461 printf("@%lluK", (unsigned long long) be64_to_cpu(LBA_OFFSET(sb
, vc
)[i
])/2);
1464 if (vc
->chunk_shift
!= 255)
1465 printf(" Chunk Size[%d] : %d sectors\n", n
,
1466 1 << vc
->chunk_shift
);
1467 printf(" Raid Level[%d] : %s\n", n
,
1468 map_num(ddf_level
, vc
->prl
)?:"-unknown-");
1469 if (vc
->sec_elmnt_count
!= 1) {
1470 printf(" Secondary Position[%d] : %d of %d\n", n
,
1471 vc
->sec_elmnt_seq
, vc
->sec_elmnt_count
);
1472 printf(" Secondary Level[%d] : %s\n", n
,
1473 map_num(ddf_sec_level
, vc
->srl
) ?: "-unknown-");
1475 printf(" Device Size[%d] : %llu\n", n
,
1476 be64_to_cpu(vc
->blocks
)/2);
1477 printf(" Array Size[%d] : %llu\n", n
,
1478 be64_to_cpu(vc
->array_blocks
)/2);
1482 static void examine_vds(struct ddf_super
*sb
)
1484 int cnt
= be16_to_cpu(sb
->virt
->populated_vdes
);
1486 printf(" Virtual Disks : %d\n", cnt
);
1488 for (i
= 0; i
< be16_to_cpu(sb
->virt
->max_vdes
); i
++) {
1489 struct virtual_entry
*ve
= &sb
->virt
->entries
[i
];
1490 if (all_ff(ve
->guid
))
1493 printf(" VD GUID[%d] : ", i
); print_guid(ve
->guid
, 1);
1495 printf(" unit[%d] : %d\n", i
, be16_to_cpu(ve
->unit
));
1496 printf(" state[%d] : %s, %s%s\n", i
,
1497 map_num(ddf_state
, ve
->state
& 7),
1498 (ve
->state
& DDF_state_morphing
) ? "Morphing, ": "",
1499 (ve
->state
& DDF_state_inconsistent
)? "Not Consistent" : "Consistent");
1500 printf(" init state[%d] : %s\n", i
,
1501 map_num(ddf_init_state
, ve
->init_state
&DDF_initstate_mask
));
1502 printf(" access[%d] : %s\n", i
,
1503 map_num(ddf_access
, (ve
->init_state
& DDF_access_mask
) >> 6));
1504 printf(" Name[%d] : %.16s\n", i
, ve
->name
);
1505 examine_vd(i
, sb
, ve
->guid
);
1507 if (cnt
) printf("\n");
1510 static void examine_pds(struct ddf_super
*sb
)
1512 int cnt
= be16_to_cpu(sb
->phys
->max_pdes
);
1516 printf(" Physical Disks : %d\n", cnt
);
1517 printf(" Number RefNo Size Device Type/State\n");
1519 for (dl
= sb
->dlist
; dl
; dl
= dl
->next
)
1522 for (i
=0 ; i
<cnt
; i
++) {
1523 struct phys_disk_entry
*pd
= &sb
->phys
->entries
[i
];
1524 int type
= be16_to_cpu(pd
->type
);
1525 int state
= be16_to_cpu(pd
->state
);
1527 if (be32_to_cpu(pd
->refnum
) == 0xffffffff)
1530 //printf(" PD GUID[%d] : ", i); print_guid(pd->guid, 0);
1532 printf(" %3d %08x ", i
,
1533 be32_to_cpu(pd
->refnum
));
1535 be64_to_cpu(pd
->config_size
)>>1);
1536 for (dl
= sb
->dlist
; dl
; dl
= dl
->next
) {
1537 if (be32_eq(dl
->disk
.refnum
, pd
->refnum
)) {
1538 char *dv
= map_dev(dl
->major
, dl
->minor
, 0);
1540 printf("%-15s", dv
);
1549 printf(" %s%s%s%s%s",
1550 (type
&2) ? "active":"",
1551 (type
&4) ? "Global-Spare":"",
1552 (type
&8) ? "spare" : "",
1553 (type
&16)? ", foreign" : "",
1554 (type
&32)? "pass-through" : "");
1555 if (state
& DDF_Failed
)
1556 /* This over-rides these three */
1557 state
&= ~(DDF_Online
|DDF_Rebuilding
|DDF_Transition
);
1558 printf("/%s%s%s%s%s%s%s",
1559 (state
&1)? "Online": "Offline",
1560 (state
&2)? ", Failed": "",
1561 (state
&4)? ", Rebuilding": "",
1562 (state
&8)? ", in-transition": "",
1563 (state
&16)? ", SMART-errors": "",
1564 (state
&32)? ", Unrecovered-Read-Errors": "",
1565 (state
&64)? ", Missing" : "");
1568 for (dl
= sb
->dlist
; dl
; dl
= dl
->next
) {
1573 printf(" Physical disks not in metadata!:\n");
1575 dv
= map_dev(dl
->major
, dl
->minor
, 0);
1576 printf(" %08x %s\n", be32_to_cpu(dl
->disk
.refnum
),
1577 dv
? dv
: "-unknown-");
1583 static void examine_super_ddf(struct supertype
*st
, char *homehost
)
1585 struct ddf_super
*sb
= st
->sb
;
1587 printf(" Magic : %08x\n", be32_to_cpu(sb
->anchor
.magic
));
1588 printf(" Version : %.8s\n", sb
->anchor
.revision
);
1589 printf("Controller GUID : "); print_guid(sb
->controller
.guid
, 0);
1591 printf(" Container GUID : "); print_guid(sb
->anchor
.guid
, 1);
1593 printf(" Seq : %08x\n", be32_to_cpu(sb
->active
->seq
));
1594 printf(" Redundant hdr : %s\n", (be32_eq(sb
->secondary
.magic
,
1601 static unsigned int get_vd_num_of_subarray(struct supertype
*st
)
1604 * Figure out the VD number for this supertype.
1605 * Returns DDF_CONTAINER for the container itself,
1606 * and DDF_NOTFOUND on error.
1608 struct ddf_super
*ddf
= st
->sb
;
1613 if (*st
->container_devnm
== '\0')
1614 return DDF_CONTAINER
;
1616 sra
= sysfs_read(-1, st
->devnm
, GET_VERSION
);
1617 if (!sra
|| sra
->array
.major_version
!= -1 ||
1618 sra
->array
.minor_version
!= -2 ||
1619 !is_subarray(sra
->text_version
))
1620 return DDF_NOTFOUND
;
1622 sub
= strchr(sra
->text_version
+ 1, '/');
1624 vcnum
= strtoul(sub
+ 1, &end
, 10);
1625 if (sub
== NULL
|| *sub
== '\0' || *end
!= '\0' ||
1626 vcnum
>= be16_to_cpu(ddf
->active
->max_vd_entries
))
1627 return DDF_NOTFOUND
;
1632 static void brief_examine_super_ddf(struct supertype
*st
, int verbose
)
1634 /* We just write a generic DDF ARRAY entry
1638 getinfo_super_ddf(st
, &info
, NULL
);
1639 fname_from_uuid(st
, &info
, nbuf
, ':');
1641 printf("ARRAY metadata=ddf UUID=%s\n", nbuf
+ 5);
1644 static void brief_examine_subarrays_ddf(struct supertype
*st
, int verbose
)
1646 /* We write a DDF ARRAY member entry for each vd, identifying container
1647 * by uuid and member by unit number and uuid.
1649 struct ddf_super
*ddf
= st
->sb
;
1653 getinfo_super_ddf(st
, &info
, NULL
);
1654 fname_from_uuid(st
, &info
, nbuf
, ':');
1656 for (i
= 0; i
< be16_to_cpu(ddf
->virt
->max_vdes
); i
++) {
1657 struct virtual_entry
*ve
= &ddf
->virt
->entries
[i
];
1661 if (all_ff(ve
->guid
))
1663 memcpy(vcl
.conf
.guid
, ve
->guid
, DDF_GUID_LEN
);
1664 ddf
->currentconf
=&vcl
;
1666 uuid_from_super_ddf(st
, info
.uuid
);
1667 fname_from_uuid(st
, &info
, nbuf1
, ':');
1668 _ddf_array_name(namebuf
, ddf
, i
);
1669 printf("ARRAY%s%s container=%s member=%d UUID=%s\n",
1670 namebuf
[0] == '\0' ? "" : " /dev/md/", namebuf
,
1671 nbuf
+5, i
, nbuf1
+5);
1675 static void export_examine_super_ddf(struct supertype
*st
)
1679 getinfo_super_ddf(st
, &info
, NULL
);
1680 fname_from_uuid(st
, &info
, nbuf
, ':');
1681 printf("MD_METADATA=ddf\n");
1682 printf("MD_LEVEL=container\n");
1683 printf("MD_UUID=%s\n", nbuf
+5);
1684 printf("MD_DEVICES=%u\n",
1685 be16_to_cpu(((struct ddf_super
*)st
->sb
)->phys
->used_pdes
));
1688 static int copy_metadata_ddf(struct supertype
*st
, int from
, int to
)
1691 unsigned long long dsize
, offset
;
1693 struct ddf_header
*ddf
;
1696 /* The meta consists of an anchor, a primary, and a secondary.
1697 * This all lives at the end of the device.
1698 * So it is easiest to find the earliest of primary and
1699 * secondary, and copy everything from there.
1701 * Anchor is 512 from end. It contains primary_lba and secondary_lba
1702 * we choose one of those
1705 if (posix_memalign(&buf
, 4096, 4096) != 0)
1708 if (!get_dev_size(from
, NULL
, &dsize
))
1711 if (lseek64(from
, dsize
-512, 0) < 0)
1713 if (read(from
, buf
, 512) != 512)
1716 if (!be32_eq(ddf
->magic
, DDF_HEADER_MAGIC
) ||
1717 !be32_eq(calc_crc(ddf
, 512), ddf
->crc
) ||
1718 (memcmp(ddf
->revision
, DDF_REVISION_0
, 8) != 0 &&
1719 memcmp(ddf
->revision
, DDF_REVISION_2
, 8) != 0))
1722 offset
= dsize
- 512;
1723 if ((be64_to_cpu(ddf
->primary_lba
) << 9) < offset
)
1724 offset
= be64_to_cpu(ddf
->primary_lba
) << 9;
1725 if ((be64_to_cpu(ddf
->secondary_lba
) << 9) < offset
)
1726 offset
= be64_to_cpu(ddf
->secondary_lba
) << 9;
1728 bytes
= dsize
- offset
;
1730 if (lseek64(from
, offset
, 0) < 0 ||
1731 lseek64(to
, offset
, 0) < 0)
1733 while (written
< bytes
) {
1734 int n
= bytes
- written
;
1737 if (read(from
, buf
, n
) != n
)
1739 if (write(to
, buf
, n
) != n
)
1750 static void detail_super_ddf(struct supertype
*st
, char *homehost
)
1752 struct ddf_super
*sb
= st
->sb
;
1753 int cnt
= be16_to_cpu(sb
->virt
->populated_vdes
);
1755 printf(" Container GUID : "); print_guid(sb
->anchor
.guid
, 1);
1757 printf(" Seq : %08x\n", be32_to_cpu(sb
->active
->seq
));
1758 printf(" Virtual Disks : %d\n", cnt
);
1763 static const char *vendors_with_variable_volume_UUID
[] = {
1767 static int volume_id_is_reliable(const struct ddf_super
*ddf
)
1769 int n
= ARRAY_SIZE(vendors_with_variable_volume_UUID
);
1771 for (i
= 0; i
< n
; i
++)
1772 if (!memcmp(ddf
->controller
.guid
,
1773 vendors_with_variable_volume_UUID
[i
], 8))
1778 static void uuid_of_ddf_subarray(const struct ddf_super
*ddf
,
1779 unsigned int vcnum
, int uuid
[4])
1781 char buf
[DDF_GUID_LEN
+18], sha
[20], *p
;
1782 struct sha1_ctx ctx
;
1783 if (volume_id_is_reliable(ddf
)) {
1784 uuid_from_ddf_guid(ddf
->virt
->entries
[vcnum
].guid
, uuid
);
1788 * Some fake RAID BIOSes (in particular, LSI ones) change the
1789 * VD GUID at every boot. These GUIDs are not suitable for
1790 * identifying an array. Luckily the header GUID appears to
1792 * We construct a pseudo-UUID from the header GUID and those
1793 * properties of the subarray that we expect to remain constant.
1795 memset(buf
, 0, sizeof(buf
));
1797 memcpy(p
, ddf
->anchor
.guid
, DDF_GUID_LEN
);
1799 memcpy(p
, ddf
->virt
->entries
[vcnum
].name
, 16);
1801 *((__u16
*) p
) = vcnum
;
1802 sha1_init_ctx(&ctx
);
1803 sha1_process_bytes(buf
, sizeof(buf
), &ctx
);
1804 sha1_finish_ctx(&ctx
, sha
);
1805 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 int max
= be16_to_cpu(ddf
->phys
->max_pdes
);
2047 for (i
= e
= 0 ; i
< map_disks
; i
++, e
++) {
2049 be32_to_cpu(ddf
->phys
->entries
[e
].refnum
) == 0xffffffff)
2051 if (i
< info
->array
.raid_disks
&& e
< max
&&
2052 !(be16_to_cpu(ddf
->phys
->entries
[e
].state
)
2061 /* size of name must be at least 17 bytes! */
2062 static void _ddf_array_name(char *name
, const struct ddf_super
*ddf
, int i
)
2065 memcpy(name
, ddf
->virt
->entries
[i
].name
, 16);
2067 for(j
= 0; j
< 16; j
++)
2072 static void getinfo_super_ddf_bvd(struct supertype
*st
, struct mdinfo
*info
, char *map
)
2074 struct ddf_super
*ddf
= st
->sb
;
2075 struct vcl
*vc
= ddf
->currentconf
;
2076 int cd
= ddf
->currentdev
;
2079 struct dl
*dl
= NULL
;
2080 int map_disks
= info
->array
.raid_disks
;
2082 struct vd_config
*conf
;
2084 memset(info
, 0, sizeof(*info
));
2085 if (layout_ddf2md(&vc
->conf
, &info
->array
) == -1)
2087 info
->array
.md_minor
= -1;
2088 cptr
= (__u32
*)(vc
->conf
.guid
+ 16);
2089 info
->array
.ctime
= DECADE
+ __be32_to_cpu(*cptr
);
2090 info
->array
.utime
= DECADE
+ be32_to_cpu(vc
->conf
.timestamp
);
2091 info
->array
.chunk_size
= 512 << vc
->conf
.chunk_shift
;
2092 info
->custom_array_size
= be64_to_cpu(vc
->conf
.array_blocks
);
2095 n_prim
= be16_to_cpu(conf
->prim_elmnt_count
);
2096 if (conf
->sec_elmnt_count
> 1 && cd
>= n_prim
) {
2097 int ibvd
= cd
/ n_prim
- 1;
2099 conf
= vc
->other_bvds
[ibvd
];
2102 if (cd
>= 0 && (unsigned)cd
< ddf
->mppe
) {
2104 be64_to_cpu(LBA_OFFSET(ddf
, conf
)[cd
]);
2105 if (vc
->block_sizes
)
2106 info
->component_size
= vc
->block_sizes
[cd
];
2108 info
->component_size
= be64_to_cpu(conf
->blocks
);
2110 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
2111 if (be32_eq(dl
->disk
.refnum
, conf
->phys_refnum
[cd
]))
2115 info
->disk
.major
= 0;
2116 info
->disk
.minor
= 0;
2117 info
->disk
.state
= 0;
2118 if (dl
&& dl
->pdnum
>= 0) {
2119 info
->disk
.major
= dl
->major
;
2120 info
->disk
.minor
= dl
->minor
;
2121 info
->disk
.raid_disk
= cd
+ conf
->sec_elmnt_seq
2122 * be16_to_cpu(conf
->prim_elmnt_count
);
2123 info
->disk
.number
= dl
->pdnum
;
2124 info
->disk
.state
= 0;
2125 if (info
->disk
.number
>= 0 &&
2126 (be16_to_cpu(ddf
->phys
->entries
[info
->disk
.number
].state
) & DDF_Online
) &&
2127 !(be16_to_cpu(ddf
->phys
->entries
[info
->disk
.number
].state
) & DDF_Failed
))
2128 info
->disk
.state
= (1<<MD_DISK_SYNC
)|(1<<MD_DISK_ACTIVE
);
2129 info
->events
= be32_to_cpu(ddf
->active
->seq
);
2132 info
->container_member
= ddf
->currentconf
->vcnum
;
2134 info
->recovery_start
= MaxSector
;
2135 info
->resync_start
= 0;
2136 info
->reshape_active
= 0;
2137 info
->recovery_blocked
= 0;
2138 if (!(ddf
->virt
->entries
[info
->container_member
].state
2139 & DDF_state_inconsistent
) &&
2140 (ddf
->virt
->entries
[info
->container_member
].init_state
2141 & DDF_initstate_mask
)
2143 info
->resync_start
= MaxSector
;
2145 uuid_from_super_ddf(st
, info
->uuid
);
2147 info
->array
.major_version
= -1;
2148 info
->array
.minor_version
= -2;
2149 sprintf(info
->text_version
, "/%s/%d",
2150 st
->container_devnm
,
2151 info
->container_member
);
2152 info
->safe_mode_delay
= DDF_SAFE_MODE_DELAY
;
2154 _ddf_array_name(info
->name
, ddf
, info
->container_member
);
2157 for (j
= 0; j
< map_disks
; j
++) {
2159 if (j
< info
->array
.raid_disks
) {
2160 int i
= find_phys(ddf
, vc
->conf
.phys_refnum
[j
]);
2162 (be16_to_cpu(ddf
->phys
->entries
[i
].state
)
2164 !(be16_to_cpu(ddf
->phys
->entries
[i
].state
)
2171 static int update_super_ddf(struct supertype
*st
, struct mdinfo
*info
,
2173 char *devname
, int verbose
,
2174 int uuid_set
, char *homehost
)
2176 /* For 'assemble' and 'force' we need to return non-zero if any
2177 * change was made. For others, the return value is ignored.
2178 * Update options are:
2179 * force-one : This device looks a bit old but needs to be included,
2180 * update age info appropriately.
2181 * assemble: clear any 'faulty' flag to allow this device to
2183 * force-array: Array is degraded but being forced, mark it clean
2184 * if that will be needed to assemble it.
2186 * newdev: not used ????
2187 * grow: Array has gained a new device - this is currently for
2189 * resync: mark as dirty so a resync will happen.
2190 * uuid: Change the uuid of the array to match what is given
2191 * homehost: update the recorded homehost
2192 * name: update the name - preserving the homehost
2193 * _reshape_progress: record new reshape_progress position.
2195 * Following are not relevant for this version:
2196 * sparc2.2 : update from old dodgey metadata
2197 * super-minor: change the preferred_minor number
2198 * summaries: update redundant counters.
2201 // struct ddf_super *ddf = st->sb;
2202 // struct vd_config *vd = find_vdcr(ddf, info->container_member);
2203 // struct virtual_entry *ve = find_ve(ddf);
2205 /* we don't need to handle "force-*" or "assemble" as
2206 * there is no need to 'trick' the kernel. When the metadata is
2207 * first updated to activate the array, all the implied modifications
2211 if (strcmp(update
, "grow") == 0) {
2213 } else if (strcmp(update
, "resync") == 0) {
2214 // info->resync_checkpoint = 0;
2215 } else if (strcmp(update
, "homehost") == 0) {
2216 /* homehost is stored in controller->vendor_data,
2217 * or it is when we are the vendor
2219 // if (info->vendor_is_local)
2220 // strcpy(ddf->controller.vendor_data, homehost);
2222 } else if (strcmp(update
, "name") == 0) {
2223 /* name is stored in virtual_entry->name */
2224 // memset(ve->name, ' ', 16);
2225 // strncpy(ve->name, info->name, 16);
2227 } else if (strcmp(update
, "_reshape_progress") == 0) {
2228 /* We don't support reshape yet */
2229 } else if (strcmp(update
, "assemble") == 0 ) {
2230 /* Do nothing, just succeed */
2235 // update_all_csum(ddf);
2240 static void make_header_guid(char *guid
)
2243 /* Create a DDF Header of Virtual Disk GUID */
2245 /* 24 bytes of fiction required.
2246 * first 8 are a 'vendor-id' - "Linux-MD"
2247 * next 8 are controller type.. how about 0X DEAD BEEF 0000 0000
2248 * Remaining 8 random number plus timestamp
2250 memcpy(guid
, T10
, sizeof(T10
));
2251 stamp
= cpu_to_be32(0xdeadbeef);
2252 memcpy(guid
+8, &stamp
, 4);
2253 stamp
= cpu_to_be32(0);
2254 memcpy(guid
+12, &stamp
, 4);
2255 stamp
= cpu_to_be32(time(0) - DECADE
);
2256 memcpy(guid
+16, &stamp
, 4);
2257 stamp
._v32
= random32();
2258 memcpy(guid
+20, &stamp
, 4);
2261 static unsigned int find_unused_vde(const struct ddf_super
*ddf
)
2264 for (i
= 0; i
< be16_to_cpu(ddf
->virt
->max_vdes
); i
++) {
2265 if (all_ff(ddf
->virt
->entries
[i
].guid
))
2268 return DDF_NOTFOUND
;
2271 static unsigned int find_vde_by_name(const struct ddf_super
*ddf
,
2276 return DDF_NOTFOUND
;
2277 for (i
= 0; i
< be16_to_cpu(ddf
->virt
->max_vdes
); i
++) {
2278 if (all_ff(ddf
->virt
->entries
[i
].guid
))
2280 if (!strncmp(name
, ddf
->virt
->entries
[i
].name
,
2281 sizeof(ddf
->virt
->entries
[i
].name
)))
2284 return DDF_NOTFOUND
;
2288 static unsigned int find_vde_by_guid(const struct ddf_super
*ddf
,
2292 if (guid
== NULL
|| all_ff(guid
))
2293 return DDF_NOTFOUND
;
2294 for (i
= 0; i
< be16_to_cpu(ddf
->virt
->max_vdes
); i
++)
2295 if (!memcmp(ddf
->virt
->entries
[i
].guid
, guid
, DDF_GUID_LEN
))
2297 return DDF_NOTFOUND
;
2301 static int init_super_ddf(struct supertype
*st
,
2302 mdu_array_info_t
*info
,
2303 unsigned long long size
, char *name
, char *homehost
,
2304 int *uuid
, unsigned long long data_offset
)
2306 /* This is primarily called by Create when creating a new array.
2307 * We will then get add_to_super called for each component, and then
2308 * write_init_super called to write it out to each device.
2309 * For DDF, Create can create on fresh devices or on a pre-existing
2311 * To create on a pre-existing array a different method will be called.
2312 * This one is just for fresh drives.
2314 * We need to create the entire 'ddf' structure which includes:
2315 * DDF headers - these are easy.
2316 * Controller data - a Sector describing this controller .. not that
2317 * this is a controller exactly.
2318 * Physical Disk Record - one entry per device, so
2319 * leave plenty of space.
2320 * Virtual Disk Records - again, just leave plenty of space.
2321 * This just lists VDs, doesn't give details.
2322 * Config records - describe the VDs that use this disk
2323 * DiskData - describes 'this' device.
2324 * BadBlockManagement - empty
2325 * Diag Space - empty
2326 * Vendor Logs - Could we put bitmaps here?
2329 struct ddf_super
*ddf
;
2332 int max_phys_disks
, max_virt_disks
;
2333 unsigned long long sector
;
2337 struct phys_disk
*pd
;
2338 struct virtual_disk
*vd
;
2341 return init_super_ddf_bvd(st
, info
, size
, name
, homehost
, uuid
,
2344 if (posix_memalign((void**)&ddf
, 512, sizeof(*ddf
)) != 0) {
2345 pr_err("%s could not allocate superblock\n", __func__
);
2348 memset(ddf
, 0, sizeof(*ddf
));
2352 /* zeroing superblock */
2356 /* At least 32MB *must* be reserved for the ddf. So let's just
2357 * start 32MB from the end, and put the primary header there.
2358 * Don't do secondary for now.
2359 * We don't know exactly where that will be yet as it could be
2360 * different on each device. So just set up the lengths.
2363 ddf
->anchor
.magic
= DDF_HEADER_MAGIC
;
2364 make_header_guid(ddf
->anchor
.guid
);
2366 memcpy(ddf
->anchor
.revision
, DDF_REVISION_2
, 8);
2367 ddf
->anchor
.seq
= cpu_to_be32(1);
2368 ddf
->anchor
.timestamp
= cpu_to_be32(time(0) - DECADE
);
2369 ddf
->anchor
.openflag
= 0xFF;
2370 ddf
->anchor
.foreignflag
= 0;
2371 ddf
->anchor
.enforcegroups
= 0; /* Is this best?? */
2372 ddf
->anchor
.pad0
= 0xff;
2373 memset(ddf
->anchor
.pad1
, 0xff, 12);
2374 memset(ddf
->anchor
.header_ext
, 0xff, 32);
2375 ddf
->anchor
.primary_lba
= cpu_to_be64(~(__u64
)0);
2376 ddf
->anchor
.secondary_lba
= cpu_to_be64(~(__u64
)0);
2377 ddf
->anchor
.type
= DDF_HEADER_ANCHOR
;
2378 memset(ddf
->anchor
.pad2
, 0xff, 3);
2379 ddf
->anchor
.workspace_len
= cpu_to_be32(32768); /* Must be reserved */
2380 /* Put this at bottom of 32M reserved.. */
2381 ddf
->anchor
.workspace_lba
= cpu_to_be64(~(__u64
)0);
2382 max_phys_disks
= 1023; /* Should be enough, 4095 is also allowed */
2383 ddf
->anchor
.max_pd_entries
= cpu_to_be16(max_phys_disks
);
2384 max_virt_disks
= 255; /* 15, 63, 255, 1024, 4095 are all allowed */
2385 ddf
->anchor
.max_vd_entries
= cpu_to_be16(max_virt_disks
);
2387 ddf
->anchor
.max_partitions
= cpu_to_be16(ddf
->max_part
);
2388 ddf
->mppe
= 256; /* 16, 64, 256, 1024, 4096 are all allowed */
2389 ddf
->conf_rec_len
= 1 + ROUND_UP(ddf
->mppe
* (4+8), 512)/512;
2390 ddf
->anchor
.config_record_len
= cpu_to_be16(ddf
->conf_rec_len
);
2391 ddf
->anchor
.max_primary_element_entries
= cpu_to_be16(ddf
->mppe
);
2392 memset(ddf
->anchor
.pad3
, 0xff, 54);
2393 /* Controller section is one sector long immediately
2394 * after the ddf header */
2396 ddf
->anchor
.controller_section_offset
= cpu_to_be32(sector
);
2397 ddf
->anchor
.controller_section_length
= cpu_to_be32(1);
2400 /* phys is 8 sectors after that */
2401 pdsize
= ROUND_UP(sizeof(struct phys_disk
) +
2402 sizeof(struct phys_disk_entry
)*max_phys_disks
,
2404 switch(pdsize
/512) {
2405 case 2: case 8: case 32: case 128: case 512: break;
2408 ddf
->anchor
.phys_section_offset
= cpu_to_be32(sector
);
2409 ddf
->anchor
.phys_section_length
=
2410 cpu_to_be32(pdsize
/512); /* max_primary_element_entries/8 */
2411 sector
+= pdsize
/512;
2413 /* virt is another 32 sectors */
2414 vdsize
= ROUND_UP(sizeof(struct virtual_disk
) +
2415 sizeof(struct virtual_entry
) * max_virt_disks
,
2417 switch(vdsize
/512) {
2418 case 2: case 8: case 32: case 128: case 512: break;
2421 ddf
->anchor
.virt_section_offset
= cpu_to_be32(sector
);
2422 ddf
->anchor
.virt_section_length
=
2423 cpu_to_be32(vdsize
/512); /* max_vd_entries/8 */
2424 sector
+= vdsize
/512;
2426 clen
= ddf
->conf_rec_len
* (ddf
->max_part
+1);
2427 ddf
->anchor
.config_section_offset
= cpu_to_be32(sector
);
2428 ddf
->anchor
.config_section_length
= cpu_to_be32(clen
);
2431 ddf
->anchor
.data_section_offset
= cpu_to_be32(sector
);
2432 ddf
->anchor
.data_section_length
= cpu_to_be32(1);
2435 ddf
->anchor
.bbm_section_length
= cpu_to_be32(0);
2436 ddf
->anchor
.bbm_section_offset
= cpu_to_be32(0xFFFFFFFF);
2437 ddf
->anchor
.diag_space_length
= cpu_to_be32(0);
2438 ddf
->anchor
.diag_space_offset
= cpu_to_be32(0xFFFFFFFF);
2439 ddf
->anchor
.vendor_length
= cpu_to_be32(0);
2440 ddf
->anchor
.vendor_offset
= cpu_to_be32(0xFFFFFFFF);
2442 memset(ddf
->anchor
.pad4
, 0xff, 256);
2444 memcpy(&ddf
->primary
, &ddf
->anchor
, 512);
2445 memcpy(&ddf
->secondary
, &ddf
->anchor
, 512);
2447 ddf
->primary
.openflag
= 1; /* I guess.. */
2448 ddf
->primary
.type
= DDF_HEADER_PRIMARY
;
2450 ddf
->secondary
.openflag
= 1; /* I guess.. */
2451 ddf
->secondary
.type
= DDF_HEADER_SECONDARY
;
2453 ddf
->active
= &ddf
->primary
;
2455 ddf
->controller
.magic
= DDF_CONTROLLER_MAGIC
;
2457 /* 24 more bytes of fiction required.
2458 * first 8 are a 'vendor-id' - "Linux-MD"
2459 * Remaining 16 are serial number.... maybe a hostname would do?
2461 memcpy(ddf
->controller
.guid
, T10
, sizeof(T10
));
2462 gethostname(hostname
, sizeof(hostname
));
2463 hostname
[sizeof(hostname
) - 1] = 0;
2464 hostlen
= strlen(hostname
);
2465 memcpy(ddf
->controller
.guid
+ 24 - hostlen
, hostname
, hostlen
);
2466 for (i
= strlen(T10
) ; i
+hostlen
< 24; i
++)
2467 ddf
->controller
.guid
[i
] = ' ';
2469 ddf
->controller
.type
.vendor_id
= cpu_to_be16(0xDEAD);
2470 ddf
->controller
.type
.device_id
= cpu_to_be16(0xBEEF);
2471 ddf
->controller
.type
.sub_vendor_id
= cpu_to_be16(0);
2472 ddf
->controller
.type
.sub_device_id
= cpu_to_be16(0);
2473 memcpy(ddf
->controller
.product_id
, "What Is My PID??", 16);
2474 memset(ddf
->controller
.pad
, 0xff, 8);
2475 memset(ddf
->controller
.vendor_data
, 0xff, 448);
2476 if (homehost
&& strlen(homehost
) < 440)
2477 strcpy((char*)ddf
->controller
.vendor_data
, homehost
);
2479 if (posix_memalign((void**)&pd
, 512, pdsize
) != 0) {
2480 pr_err("%s could not allocate pd\n", __func__
);
2484 ddf
->pdsize
= pdsize
;
2486 memset(pd
, 0xff, pdsize
);
2487 memset(pd
, 0, sizeof(*pd
));
2488 pd
->magic
= DDF_PHYS_RECORDS_MAGIC
;
2489 pd
->used_pdes
= cpu_to_be16(0);
2490 pd
->max_pdes
= cpu_to_be16(max_phys_disks
);
2491 memset(pd
->pad
, 0xff, 52);
2492 for (i
= 0; i
< max_phys_disks
; i
++)
2493 memset(pd
->entries
[i
].guid
, 0xff, DDF_GUID_LEN
);
2495 if (posix_memalign((void**)&vd
, 512, vdsize
) != 0) {
2496 pr_err("%s could not allocate vd\n", __func__
);
2500 ddf
->vdsize
= vdsize
;
2501 memset(vd
, 0, vdsize
);
2502 vd
->magic
= DDF_VIRT_RECORDS_MAGIC
;
2503 vd
->populated_vdes
= cpu_to_be16(0);
2504 vd
->max_vdes
= cpu_to_be16(max_virt_disks
);
2505 memset(vd
->pad
, 0xff, 52);
2507 for (i
=0; i
<max_virt_disks
; i
++)
2508 memset(&vd
->entries
[i
], 0xff, sizeof(struct virtual_entry
));
2511 ddf_set_updates_pending(ddf
, NULL
);
2515 static int chunk_to_shift(int chunksize
)
2517 return ffs(chunksize
/512)-1;
2522 unsigned long long start
, size
;
2524 static int cmp_extent(const void *av
, const void *bv
)
2526 const struct extent
*a
= av
;
2527 const struct extent
*b
= bv
;
2528 if (a
->start
< b
->start
)
2530 if (a
->start
> b
->start
)
2535 static struct extent
*get_extents(struct ddf_super
*ddf
, struct dl
*dl
)
2537 /* Find a list of used extents on the given physical device
2538 * (dnum) of the given ddf.
2539 * Return a malloced array of 'struct extent'
2548 state
= be16_to_cpu(ddf
->phys
->entries
[dl
->pdnum
].state
);
2550 if ((state
& (DDF_Online
|DDF_Failed
|DDF_Missing
)) != DDF_Online
)
2553 rv
= xmalloc(sizeof(struct extent
) * (ddf
->max_part
+ 2));
2555 for (i
= 0; i
< ddf
->max_part
; i
++) {
2556 const struct vd_config
*bvd
;
2558 struct vcl
*v
= dl
->vlist
[i
];
2560 get_pd_index_from_refnum(v
, dl
->disk
.refnum
, ddf
->mppe
,
2561 &bvd
, &ibvd
) == DDF_NOTFOUND
)
2563 rv
[n
].start
= be64_to_cpu(LBA_OFFSET(ddf
, bvd
)[ibvd
]);
2564 rv
[n
].size
= be64_to_cpu(bvd
->blocks
);
2567 qsort(rv
, n
, sizeof(*rv
), cmp_extent
);
2569 rv
[n
].start
= be64_to_cpu(ddf
->phys
->entries
[dl
->pdnum
].config_size
);
2574 static unsigned long long find_space(
2575 struct ddf_super
*ddf
, struct dl
*dl
,
2576 unsigned long long data_offset
,
2577 unsigned long long *size
)
2579 /* Find if the requested amount of space is available.
2580 * If it is, return start.
2581 * If not, set *size to largest space.
2582 * If data_offset != INVALID_SECTORS, then the space must start
2585 struct extent
*e
= get_extents(ddf
, dl
);
2587 unsigned long long pos
= 0;
2588 unsigned long long max_size
= 0;
2592 return INVALID_SECTORS
;
2595 unsigned long long esize
= e
[i
].start
- pos
;
2596 if (data_offset
!= INVALID_SECTORS
&&
2597 pos
<= data_offset
&&
2598 e
[i
].start
> data_offset
) {
2600 esize
= e
[i
].start
- pos
;
2602 if (data_offset
!= INVALID_SECTORS
&&
2603 pos
!= data_offset
) {
2607 if (esize
>= *size
) {
2612 if (esize
> max_size
)
2614 pos
= e
[i
].start
+ e
[i
].size
;
2616 } while (e
[i
-1].size
);
2619 return INVALID_SECTORS
;
2623 static int init_super_ddf_bvd(struct supertype
*st
,
2624 mdu_array_info_t
*info
,
2625 unsigned long long size
,
2626 char *name
, char *homehost
,
2627 int *uuid
, unsigned long long data_offset
)
2629 /* We are creating a BVD inside a pre-existing container.
2630 * so st->sb is already set.
2631 * We need to create a new vd_config and a new virtual_entry
2633 struct ddf_super
*ddf
= st
->sb
;
2634 unsigned int venum
, i
;
2635 struct virtual_entry
*ve
;
2637 struct vd_config
*vc
;
2639 if (find_vde_by_name(ddf
, name
) != DDF_NOTFOUND
) {
2640 pr_err("This ddf already has an array called %s\n", name
);
2643 venum
= find_unused_vde(ddf
);
2644 if (venum
== DDF_NOTFOUND
) {
2645 pr_err("Cannot find spare slot for virtual disk\n");
2648 ve
= &ddf
->virt
->entries
[venum
];
2650 /* A Virtual Disk GUID contains the T10 Vendor ID, controller type,
2651 * timestamp, random number
2653 make_header_guid(ve
->guid
);
2654 ve
->unit
= cpu_to_be16(info
->md_minor
);
2656 ve
->guid_crc
._v16
= crc32(0, (unsigned char *)ddf
->anchor
.guid
,
2658 ve
->type
= cpu_to_be16(0);
2659 ve
->state
= DDF_state_degraded
; /* Will be modified as devices are added */
2660 if (info
->state
& 1) /* clean */
2661 ve
->init_state
= DDF_init_full
;
2663 ve
->init_state
= DDF_init_not
;
2665 memset(ve
->pad1
, 0xff, 14);
2666 memset(ve
->name
, ' ', 16);
2668 strncpy(ve
->name
, name
, 16);
2669 ddf
->virt
->populated_vdes
=
2670 cpu_to_be16(be16_to_cpu(ddf
->virt
->populated_vdes
)+1);
2672 /* Now create a new vd_config */
2673 if (posix_memalign((void**)&vcl
, 512,
2674 (offsetof(struct vcl
, conf
) + ddf
->conf_rec_len
* 512)) != 0) {
2675 pr_err("%s could not allocate vd_config\n", __func__
);
2679 vcl
->block_sizes
= NULL
; /* FIXME not for CONCAT */
2682 vc
->magic
= DDF_VD_CONF_MAGIC
;
2683 memcpy(vc
->guid
, ve
->guid
, DDF_GUID_LEN
);
2684 vc
->timestamp
= cpu_to_be32(time(0)-DECADE
);
2685 vc
->seqnum
= cpu_to_be32(1);
2686 memset(vc
->pad0
, 0xff, 24);
2687 vc
->chunk_shift
= chunk_to_shift(info
->chunk_size
);
2688 if (layout_md2ddf(info
, vc
) == -1 ||
2689 be16_to_cpu(vc
->prim_elmnt_count
) > ddf
->mppe
) {
2690 pr_err("%s: unsupported RAID level/layout %d/%d with %d disks\n",
2691 __func__
, info
->level
, info
->layout
, info
->raid_disks
);
2695 vc
->sec_elmnt_seq
= 0;
2696 if (alloc_other_bvds(ddf
, vcl
) != 0) {
2697 pr_err("%s could not allocate other bvds\n",
2702 vc
->blocks
= cpu_to_be64(info
->size
* 2);
2703 vc
->array_blocks
= cpu_to_be64(
2704 calc_array_size(info
->level
, info
->raid_disks
, info
->layout
,
2705 info
->chunk_size
, info
->size
*2));
2706 memset(vc
->pad1
, 0xff, 8);
2707 vc
->spare_refs
[0] = cpu_to_be32(0xffffffff);
2708 vc
->spare_refs
[1] = cpu_to_be32(0xffffffff);
2709 vc
->spare_refs
[2] = cpu_to_be32(0xffffffff);
2710 vc
->spare_refs
[3] = cpu_to_be32(0xffffffff);
2711 vc
->spare_refs
[4] = cpu_to_be32(0xffffffff);
2712 vc
->spare_refs
[5] = cpu_to_be32(0xffffffff);
2713 vc
->spare_refs
[6] = cpu_to_be32(0xffffffff);
2714 vc
->spare_refs
[7] = cpu_to_be32(0xffffffff);
2715 memset(vc
->cache_pol
, 0, 8);
2717 memset(vc
->pad2
, 0xff, 3);
2718 memset(vc
->pad3
, 0xff, 52);
2719 memset(vc
->pad4
, 0xff, 192);
2720 memset(vc
->v0
, 0xff, 32);
2721 memset(vc
->v1
, 0xff, 32);
2722 memset(vc
->v2
, 0xff, 16);
2723 memset(vc
->v3
, 0xff, 16);
2724 memset(vc
->vendor
, 0xff, 32);
2726 memset(vc
->phys_refnum
, 0xff, 4*ddf
->mppe
);
2727 memset(vc
->phys_refnum
+ddf
->mppe
, 0x00, 8*ddf
->mppe
);
2729 for (i
= 1; i
< vc
->sec_elmnt_count
; i
++) {
2730 memcpy(vcl
->other_bvds
[i
-1], vc
, ddf
->conf_rec_len
* 512);
2731 vcl
->other_bvds
[i
-1]->sec_elmnt_seq
= i
;
2734 vcl
->next
= ddf
->conflist
;
2735 ddf
->conflist
= vcl
;
2736 ddf
->currentconf
= vcl
;
2737 ddf_set_updates_pending(ddf
, NULL
);
2742 static void add_to_super_ddf_bvd(struct supertype
*st
,
2743 mdu_disk_info_t
*dk
, int fd
, char *devname
,
2744 unsigned long long data_offset
)
2746 /* fd and devname identify a device within the ddf container (st).
2747 * dk identifies a location in the new BVD.
2748 * We need to find suitable free space in that device and update
2749 * the phys_refnum and lba_offset for the newly created vd_config.
2750 * We might also want to update the type in the phys_disk
2753 * Alternately: fd == -1 and we have already chosen which device to
2754 * use and recorded in dlist->raid_disk;
2757 struct ddf_super
*ddf
= st
->sb
;
2758 struct vd_config
*vc
;
2760 unsigned long long blocks
, pos
;
2761 unsigned int raid_disk
= dk
->raid_disk
;
2764 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
2765 if (dl
->raiddisk
== dk
->raid_disk
)
2768 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
2769 if (dl
->major
== dk
->major
&&
2770 dl
->minor
== dk
->minor
)
2773 if (!dl
|| dl
->pdnum
< 0 || ! (dk
->state
& (1<<MD_DISK_SYNC
)))
2776 vc
= &ddf
->currentconf
->conf
;
2777 if (vc
->sec_elmnt_count
> 1) {
2778 unsigned int n
= be16_to_cpu(vc
->prim_elmnt_count
);
2780 vc
= ddf
->currentconf
->other_bvds
[raid_disk
/ n
- 1];
2784 blocks
= be64_to_cpu(vc
->blocks
);
2785 if (ddf
->currentconf
->block_sizes
)
2786 blocks
= ddf
->currentconf
->block_sizes
[dk
->raid_disk
];
2788 pos
= find_space(ddf
, dl
, data_offset
, &blocks
);
2789 if (pos
== INVALID_SECTORS
)
2792 ddf
->currentdev
= dk
->raid_disk
;
2793 vc
->phys_refnum
[raid_disk
] = dl
->disk
.refnum
;
2794 LBA_OFFSET(ddf
, vc
)[raid_disk
] = cpu_to_be64(pos
);
2796 for (i
= 0; i
< ddf
->max_part
; i
++)
2797 if (dl
->vlist
[i
] == NULL
)
2799 if (i
== ddf
->max_part
)
2801 dl
->vlist
[i
] = ddf
->currentconf
;
2806 dl
->devname
= devname
;
2808 /* Check if we can mark array as optimal yet */
2809 i
= ddf
->currentconf
->vcnum
;
2810 ddf
->virt
->entries
[i
].state
=
2811 (ddf
->virt
->entries
[i
].state
& ~DDF_state_mask
)
2812 | get_svd_state(ddf
, ddf
->currentconf
);
2813 be16_clear(ddf
->phys
->entries
[dl
->pdnum
].type
,
2814 cpu_to_be16(DDF_Global_Spare
));
2815 be16_set(ddf
->phys
->entries
[dl
->pdnum
].type
,
2816 cpu_to_be16(DDF_Active_in_VD
));
2817 dprintf("%s: added disk %d/%08x to VD %d/%s as disk %d\n",
2818 __func__
, dl
->pdnum
, be32_to_cpu(dl
->disk
.refnum
),
2819 ddf
->currentconf
->vcnum
, guid_str(vc
->guid
),
2821 ddf_set_updates_pending(ddf
, vc
);
2824 static unsigned int find_unused_pde(const struct ddf_super
*ddf
)
2827 for (i
= 0; i
< be16_to_cpu(ddf
->phys
->max_pdes
); i
++) {
2828 if (all_ff(ddf
->phys
->entries
[i
].guid
))
2831 return DDF_NOTFOUND
;
2834 static void _set_config_size(struct phys_disk_entry
*pde
, const struct dl
*dl
)
2837 cfs
= min(dl
->size
- 32*1024*2ULL, be64_to_cpu(dl
->primary_lba
));
2838 t
= be64_to_cpu(dl
->secondary_lba
);
2842 * Some vendor DDF structures interpret workspace_lba
2843 * very differently than we do: Make a sanity check on the value.
2845 t
= be64_to_cpu(dl
->workspace_lba
);
2847 __u64 wsp
= cfs
- t
;
2848 if (wsp
> 1024*1024*2ULL && wsp
> dl
->size
/ 16) {
2849 pr_err("%s: %x:%x: workspace size 0x%llx too big, ignoring\n",
2850 __func__
, dl
->major
, dl
->minor
, wsp
);
2854 pde
->config_size
= cpu_to_be64(cfs
);
2855 dprintf("%s: %x:%x config_size %llx, DDF structure is %llx blocks\n",
2856 __func__
, dl
->major
, dl
->minor
, cfs
, dl
->size
-cfs
);
2859 /* Add a device to a container, either while creating it or while
2860 * expanding a pre-existing container
2862 static int add_to_super_ddf(struct supertype
*st
,
2863 mdu_disk_info_t
*dk
, int fd
, char *devname
,
2864 unsigned long long data_offset
)
2866 struct ddf_super
*ddf
= st
->sb
;
2870 unsigned long long size
;
2871 struct phys_disk_entry
*pde
;
2876 if (ddf
->currentconf
) {
2877 add_to_super_ddf_bvd(st
, dk
, fd
, devname
, data_offset
);
2881 /* This is device numbered dk->number. We need to create
2882 * a phys_disk entry and a more detailed disk_data entry.
2885 n
= find_unused_pde(ddf
);
2886 if (n
== DDF_NOTFOUND
) {
2887 pr_err("%s: No free slot in array, cannot add disk\n",
2891 pde
= &ddf
->phys
->entries
[n
];
2892 get_dev_size(fd
, NULL
, &size
);
2893 if (size
<= 32*1024*1024) {
2894 pr_err("%s: device size must be at least 32MB\n",
2900 if (posix_memalign((void**)&dd
, 512,
2901 sizeof(*dd
) + sizeof(dd
->vlist
[0]) * ddf
->max_part
) != 0) {
2902 pr_err("%s could allocate buffer for new disk, aborting\n",
2906 dd
->major
= major(stb
.st_rdev
);
2907 dd
->minor
= minor(stb
.st_rdev
);
2908 dd
->devname
= devname
;
2912 dd
->disk
.magic
= DDF_PHYS_DATA_MAGIC
;
2914 tm
= localtime(&now
);
2915 sprintf(dd
->disk
.guid
, "%8s%04d%02d%02d",
2916 T10
, tm
->tm_year
+1900, tm
->tm_mon
+1, tm
->tm_mday
);
2917 tptr
= (__u32
*)(dd
->disk
.guid
+ 16);
2918 *tptr
++ = random32();
2922 /* Cannot be bothered finding a CRC of some irrelevant details*/
2923 dd
->disk
.refnum
._v32
= random32();
2924 for (i
= be16_to_cpu(ddf
->active
->max_pd_entries
);
2926 if (be32_eq(ddf
->phys
->entries
[i
-1].refnum
,
2931 dd
->disk
.forced_ref
= 1;
2932 dd
->disk
.forced_guid
= 1;
2933 memset(dd
->disk
.vendor
, ' ', 32);
2934 memcpy(dd
->disk
.vendor
, "Linux", 5);
2935 memset(dd
->disk
.pad
, 0xff, 442);
2936 for (i
= 0; i
< ddf
->max_part
; i
++)
2937 dd
->vlist
[i
] = NULL
;
2941 if (st
->update_tail
) {
2942 int len
= (sizeof(struct phys_disk
) +
2943 sizeof(struct phys_disk_entry
));
2944 struct phys_disk
*pd
;
2947 pd
->magic
= DDF_PHYS_RECORDS_MAGIC
;
2948 pd
->used_pdes
= cpu_to_be16(n
);
2949 pde
= &pd
->entries
[0];
2952 ddf
->phys
->used_pdes
= cpu_to_be16(
2953 1 + be16_to_cpu(ddf
->phys
->used_pdes
));
2955 memcpy(pde
->guid
, dd
->disk
.guid
, DDF_GUID_LEN
);
2956 pde
->refnum
= dd
->disk
.refnum
;
2957 pde
->type
= cpu_to_be16(DDF_Forced_PD_GUID
| DDF_Global_Spare
);
2958 pde
->state
= cpu_to_be16(DDF_Online
);
2961 * If there is already a device in dlist, try to reserve the same
2962 * amount of workspace. Otherwise, use 32MB.
2963 * We checked disk size above already.
2965 #define __calc_lba(new, old, lba, mb) do { \
2966 unsigned long long dif; \
2967 if ((old) != NULL) \
2968 dif = (old)->size - be64_to_cpu((old)->lba); \
2970 dif = (new)->size; \
2971 if ((new)->size > dif) \
2972 (new)->lba = cpu_to_be64((new)->size - dif); \
2974 (new)->lba = cpu_to_be64((new)->size - (mb*1024*2)); \
2976 __calc_lba(dd
, ddf
->dlist
, workspace_lba
, 32);
2977 __calc_lba(dd
, ddf
->dlist
, primary_lba
, 16);
2978 if (ddf
->dlist
== NULL
||
2979 be64_to_cpu(ddf
->dlist
->secondary_lba
) != ~(__u64
)0)
2980 __calc_lba(dd
, ddf
->dlist
, secondary_lba
, 32);
2981 _set_config_size(pde
, dd
);
2983 sprintf(pde
->path
, "%17.17s","Information: nil") ;
2984 memset(pde
->pad
, 0xff, 6);
2986 if (st
->update_tail
) {
2987 dd
->next
= ddf
->add_list
;
2990 dd
->next
= ddf
->dlist
;
2992 ddf_set_updates_pending(ddf
, NULL
);
2998 static int remove_from_super_ddf(struct supertype
*st
, mdu_disk_info_t
*dk
)
3000 struct ddf_super
*ddf
= st
->sb
;
3003 /* mdmon has noticed that this disk (dk->major/dk->minor) has
3004 * disappeared from the container.
3005 * We need to arrange that it disappears from the metadata and
3006 * internal data structures too.
3007 * Most of the work is done by ddf_process_update which edits
3008 * the metadata and closes the file handle and attaches the memory
3009 * where free_updates will free it.
3011 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
3012 if (dl
->major
== dk
->major
&&
3013 dl
->minor
== dk
->minor
)
3015 if (!dl
|| dl
->pdnum
< 0)
3018 if (st
->update_tail
) {
3019 int len
= (sizeof(struct phys_disk
) +
3020 sizeof(struct phys_disk_entry
));
3021 struct phys_disk
*pd
;
3024 pd
->magic
= DDF_PHYS_RECORDS_MAGIC
;
3025 pd
->used_pdes
= cpu_to_be16(dl
->pdnum
);
3026 pd
->entries
[0].state
= cpu_to_be16(DDF_Missing
);
3027 append_metadata_update(st
, pd
, len
);
3034 * This is the write_init_super method for a ddf container. It is
3035 * called when creating a container or adding another device to a
3039 static int __write_ddf_structure(struct dl
*d
, struct ddf_super
*ddf
, __u8 type
)
3041 unsigned long long sector
;
3042 struct ddf_header
*header
;
3043 int fd
, i
, n_config
, conf_size
, buf_size
;
3050 case DDF_HEADER_PRIMARY
:
3051 header
= &ddf
->primary
;
3052 sector
= be64_to_cpu(header
->primary_lba
);
3054 case DDF_HEADER_SECONDARY
:
3055 header
= &ddf
->secondary
;
3056 sector
= be64_to_cpu(header
->secondary_lba
);
3061 if (sector
== ~(__u64
)0)
3064 header
->type
= type
;
3065 header
->openflag
= 1;
3066 header
->crc
= calc_crc(header
, 512);
3068 lseek64(fd
, sector
<<9, 0);
3069 if (write(fd
, header
, 512) < 0)
3072 ddf
->controller
.crc
= calc_crc(&ddf
->controller
, 512);
3073 if (write(fd
, &ddf
->controller
, 512) < 0)
3076 ddf
->phys
->crc
= calc_crc(ddf
->phys
, ddf
->pdsize
);
3077 if (write(fd
, ddf
->phys
, ddf
->pdsize
) < 0)
3079 ddf
->virt
->crc
= calc_crc(ddf
->virt
, ddf
->vdsize
);
3080 if (write(fd
, ddf
->virt
, ddf
->vdsize
) < 0)
3083 /* Now write lots of config records. */
3084 n_config
= ddf
->max_part
;
3085 conf_size
= ddf
->conf_rec_len
* 512;
3087 buf_size
= conf_size
* (n_config
+ 1);
3089 if (posix_memalign((void**)&conf
, 512, buf_size
) != 0)
3093 for (i
= 0 ; i
<= n_config
; i
++) {
3095 struct vd_config
*vdc
= NULL
;
3096 if (i
== n_config
) {
3097 c
= (struct vcl
*)d
->spare
;
3104 get_pd_index_from_refnum(
3107 (const struct vd_config
**)&vdc
,
3111 dprintf("writing conf record %i on disk %08x for %s/%u\n",
3112 i
, be32_to_cpu(d
->disk
.refnum
),
3113 guid_str(vdc
->guid
),
3114 vdc
->sec_elmnt_seq
);
3115 vdc
->crc
= calc_crc(vdc
, conf_size
);
3116 memcpy(conf
+ i
*conf_size
, vdc
, conf_size
);
3118 memset(conf
+ i
*conf_size
, 0xff, conf_size
);
3120 if (write(fd
, conf
, buf_size
) != buf_size
)
3123 d
->disk
.crc
= calc_crc(&d
->disk
, 512);
3124 if (write(fd
, &d
->disk
, 512) < 0)
3129 header
->openflag
= 0;
3130 header
->crc
= calc_crc(header
, 512);
3132 lseek64(fd
, sector
<<9, 0);
3133 if (write(fd
, header
, 512) < 0)
3139 static int _write_super_to_disk(struct ddf_super
*ddf
, struct dl
*d
)
3141 unsigned long long size
;
3146 /* We need to fill in the primary, (secondary) and workspace
3147 * lba's in the headers, set their checksums,
3148 * Also checksum phys, virt....
3150 * Then write everything out, finally the anchor is written.
3152 get_dev_size(fd
, NULL
, &size
);
3154 memcpy(&ddf
->anchor
, ddf
->active
, 512);
3155 if (be64_to_cpu(d
->workspace_lba
) != 0ULL)
3156 ddf
->anchor
.workspace_lba
= d
->workspace_lba
;
3158 ddf
->anchor
.workspace_lba
=
3159 cpu_to_be64(size
- 32*1024*2);
3160 if (be64_to_cpu(d
->primary_lba
) != 0ULL)
3161 ddf
->anchor
.primary_lba
= d
->primary_lba
;
3163 ddf
->anchor
.primary_lba
=
3164 cpu_to_be64(size
- 16*1024*2);
3165 if (be64_to_cpu(d
->secondary_lba
) != 0ULL)
3166 ddf
->anchor
.secondary_lba
= d
->secondary_lba
;
3168 ddf
->anchor
.secondary_lba
=
3169 cpu_to_be64(size
- 32*1024*2);
3170 ddf
->anchor
.timestamp
= cpu_to_be32(time(0) - DECADE
);
3171 memcpy(&ddf
->primary
, &ddf
->anchor
, 512);
3172 memcpy(&ddf
->secondary
, &ddf
->anchor
, 512);
3174 ddf
->anchor
.openflag
= 0xFF; /* 'open' means nothing */
3175 ddf
->anchor
.seq
= cpu_to_be32(0xFFFFFFFF); /* no sequencing in anchor */
3176 ddf
->anchor
.crc
= calc_crc(&ddf
->anchor
, 512);
3178 if (!__write_ddf_structure(d
, ddf
, DDF_HEADER_PRIMARY
))
3181 if (!__write_ddf_structure(d
, ddf
, DDF_HEADER_SECONDARY
))
3184 lseek64(fd
, (size
-1)*512, SEEK_SET
);
3185 if (write(fd
, &ddf
->anchor
, 512) < 0)
3192 static int __write_init_super_ddf(struct supertype
*st
)
3194 struct ddf_super
*ddf
= st
->sb
;
3199 pr_state(ddf
, __func__
);
3201 /* try to write updated metadata,
3202 * if we catch a failure move on to the next disk
3204 for (d
= ddf
->dlist
; d
; d
=d
->next
) {
3206 successes
+= _write_super_to_disk(ddf
, d
);
3209 return attempts
!= successes
;
3212 static int write_init_super_ddf(struct supertype
*st
)
3214 struct ddf_super
*ddf
= st
->sb
;
3215 struct vcl
*currentconf
= ddf
->currentconf
;
3217 /* We are done with currentconf - reset it so st refers to the container */
3218 ddf
->currentconf
= NULL
;
3220 if (st
->update_tail
) {
3221 /* queue the virtual_disk and vd_config as metadata updates */
3222 struct virtual_disk
*vd
;
3223 struct vd_config
*vc
;
3228 /* Must be adding a physical disk to the container */
3229 int len
= (sizeof(struct phys_disk
) +
3230 sizeof(struct phys_disk_entry
));
3232 /* adding a disk to the container. */
3236 append_metadata_update(st
, ddf
->add_list
->mdupdate
, len
);
3237 ddf
->add_list
->mdupdate
= NULL
;
3241 /* Newly created VD */
3243 /* First the virtual disk. We have a slightly fake header */
3244 len
= sizeof(struct virtual_disk
) + sizeof(struct virtual_entry
);
3247 vd
->entries
[0] = ddf
->virt
->entries
[currentconf
->vcnum
];
3248 vd
->populated_vdes
= cpu_to_be16(currentconf
->vcnum
);
3249 append_metadata_update(st
, vd
, len
);
3251 /* Then the vd_config */
3252 len
= ddf
->conf_rec_len
* 512;
3253 tlen
= len
* currentconf
->conf
.sec_elmnt_count
;
3255 memcpy(vc
, ¤tconf
->conf
, len
);
3256 for (i
= 1; i
< currentconf
->conf
.sec_elmnt_count
; i
++)
3257 memcpy((char *)vc
+ i
*len
, currentconf
->other_bvds
[i
-1],
3259 append_metadata_update(st
, vc
, tlen
);
3265 for (d
= ddf
->dlist
; d
; d
=d
->next
)
3266 while (Kill(d
->devname
, NULL
, 0, -1, 1) == 0);
3267 /* Note: we don't close the fd's now, but a subsequent
3268 * ->free_super() will
3270 return __write_init_super_ddf(st
);
3276 static __u64
avail_size_ddf(struct supertype
*st
, __u64 devsize
,
3277 unsigned long long data_offset
)
3279 /* We must reserve the last 32Meg */
3280 if (devsize
<= 32*1024*2)
3282 return devsize
- 32*1024*2;
3287 static int reserve_space(struct supertype
*st
, int raiddisks
,
3288 unsigned long long size
, int chunk
,
3289 unsigned long long data_offset
,
3290 unsigned long long *freesize
)
3292 /* Find 'raiddisks' spare extents at least 'size' big (but
3293 * only caring about multiples of 'chunk') and remember
3294 * them. If size==0, find the largest size possible.
3295 * Report available size in *freesize
3296 * If space cannot be found, fail.
3299 struct ddf_super
*ddf
= st
->sb
;
3302 for (dl
= ddf
->dlist
; dl
; dl
=dl
->next
) {
3306 /* Now find largest extent on each device */
3307 for (dl
= ddf
->dlist
; dl
; dl
=dl
->next
) {
3308 unsigned long long minsize
= ULLONG_MAX
;
3310 find_space(ddf
, dl
, data_offset
, &minsize
);
3311 if (minsize
>= size
&& minsize
>= (unsigned)chunk
) {
3313 dl
->esize
= minsize
;
3316 if (cnt
< raiddisks
) {
3317 pr_err("not enough devices with space to create array.\n");
3318 return 0; /* No enough free spaces large enough */
3321 /* choose the largest size of which there are at least 'raiddisk' */
3322 for (dl
= ddf
->dlist
; dl
; dl
=dl
->next
) {
3324 if (dl
->esize
<= size
)
3326 /* This is bigger than 'size', see if there are enough */
3328 for (dl2
= ddf
->dlist
; dl2
; dl2
=dl2
->next
)
3329 if (dl2
->esize
>= dl
->esize
)
3331 if (cnt
>= raiddisks
)
3335 size
= size
/ chunk
;
3340 pr_err("not enough spare devices to create array.\n");
3344 /* We have a 'size' of which there are enough spaces.
3345 * We simply do a first-fit */
3347 for (dl
= ddf
->dlist
; dl
&& cnt
< raiddisks
; dl
=dl
->next
) {
3348 if (dl
->esize
< size
)
3357 static int validate_geometry_ddf(struct supertype
*st
,
3358 int level
, int layout
, int raiddisks
,
3359 int *chunk
, unsigned long long size
,
3360 unsigned long long data_offset
,
3361 char *dev
, unsigned long long *freesize
,
3368 /* ddf potentially supports lots of things, but it depends on
3369 * what devices are offered (and maybe kernel version?)
3370 * If given unused devices, we will make a container.
3371 * If given devices in a container, we will make a BVD.
3372 * If given BVDs, we make an SVD, changing all the GUIDs in the process.
3375 if (*chunk
== UnSet
)
3376 *chunk
= DEFAULT_CHUNK
;
3378 if (level
== LEVEL_NONE
)
3379 level
= LEVEL_CONTAINER
;
3380 if (level
== LEVEL_CONTAINER
) {
3381 /* Must be a fresh device to add to a container */
3382 return validate_geometry_ddf_container(st
, level
, layout
,
3384 size
, data_offset
, dev
,
3390 mdu_array_info_t array
= {
3393 .raid_disks
= raiddisks
3395 struct vd_config conf
;
3396 if (layout_md2ddf(&array
, &conf
) == -1) {
3398 pr_err("DDF does not support level %d /layout %d arrays with %d disks\n",
3399 level
, layout
, raiddisks
);
3402 /* Should check layout? etc */
3404 if (st
->sb
&& freesize
) {
3405 /* --create was given a container to create in.
3406 * So we need to check that there are enough
3407 * free spaces and return the amount of space.
3408 * We may as well remember which drives were
3409 * chosen so that add_to_super/getinfo_super
3412 return reserve_space(st
, raiddisks
, size
, *chunk
,
3413 data_offset
, freesize
);
3419 /* A container has already been opened, so we are
3420 * creating in there. Maybe a BVD, maybe an SVD.
3421 * Should make a distinction one day.
3423 return validate_geometry_ddf_bvd(st
, level
, layout
, raiddisks
,
3424 chunk
, size
, data_offset
, dev
,
3428 /* This is the first device for the array.
3429 * If it is a container, we read it in and do automagic allocations,
3430 * no other devices should be given.
3431 * Otherwise it must be a member device of a container, and we
3432 * do manual allocation.
3433 * Later we should check for a BVD and make an SVD.
3435 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
3438 /* Just a bare device, no good to us */
3440 pr_err("ddf: Cannot create this array "
3441 "on device %s - a container is required.\n",
3445 if (errno
!= EBUSY
|| (fd
= open(dev
, O_RDONLY
, 0)) < 0) {
3447 pr_err("ddf: Cannot open %s: %s\n",
3448 dev
, strerror(errno
));
3451 /* Well, it is in use by someone, maybe a 'ddf' container. */
3452 cfd
= open_container(fd
);
3456 pr_err("ddf: Cannot use %s: %s\n",
3457 dev
, strerror(EBUSY
));
3460 sra
= sysfs_read(cfd
, NULL
, GET_VERSION
);
3462 if (sra
&& sra
->array
.major_version
== -1 &&
3463 strcmp(sra
->text_version
, "ddf") == 0) {
3464 /* This is a member of a ddf container. Load the container
3465 * and try to create a bvd
3467 struct ddf_super
*ddf
;
3468 if (load_super_ddf_all(st
, cfd
, (void **)&ddf
, NULL
) == 0) {
3470 strcpy(st
->container_devnm
, fd2devnm(cfd
));
3472 return validate_geometry_ddf_bvd(st
, level
, layout
,
3473 raiddisks
, chunk
, size
,
3479 } else /* device may belong to a different container */
3486 validate_geometry_ddf_container(struct supertype
*st
,
3487 int level
, int layout
, int raiddisks
,
3488 int chunk
, unsigned long long size
,
3489 unsigned long long data_offset
,
3490 char *dev
, unsigned long long *freesize
,
3494 unsigned long long ldsize
;
3496 if (level
!= LEVEL_CONTAINER
)
3501 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
3504 pr_err("ddf: Cannot open %s: %s\n",
3505 dev
, strerror(errno
));
3508 if (!get_dev_size(fd
, dev
, &ldsize
)) {
3514 *freesize
= avail_size_ddf(st
, ldsize
>> 9, INVALID_SECTORS
);
3521 static int validate_geometry_ddf_bvd(struct supertype
*st
,
3522 int level
, int layout
, int raiddisks
,
3523 int *chunk
, unsigned long long size
,
3524 unsigned long long data_offset
,
3525 char *dev
, unsigned long long *freesize
,
3529 struct ddf_super
*ddf
= st
->sb
;
3531 unsigned long long maxsize
;
3532 /* ddf/bvd supports lots of things, but not containers */
3533 if (level
== LEVEL_CONTAINER
) {
3535 pr_err("DDF cannot create a container within an container\n");
3538 /* We must have the container info already read in. */
3543 /* General test: make sure there is space for
3544 * 'raiddisks' device extents of size 'size'.
3546 unsigned long long minsize
= size
;
3550 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
) {
3551 if (find_space(ddf
, dl
, data_offset
, &minsize
)
3555 if (dcnt
< raiddisks
) {
3557 pr_err("ddf: Not enough devices with "
3558 "space for this array (%d < %d)\n",
3564 /* This device must be a member of the set */
3565 if (stat(dev
, &stb
) < 0)
3567 if ((S_IFMT
& stb
.st_mode
) != S_IFBLK
)
3569 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
) {
3570 if (dl
->major
== (int)major(stb
.st_rdev
) &&
3571 dl
->minor
== (int)minor(stb
.st_rdev
))
3576 pr_err("ddf: %s is not in the "
3581 maxsize
= ULLONG_MAX
;
3582 find_space(ddf
, dl
, data_offset
, &maxsize
);
3583 *freesize
= maxsize
;
3588 static int load_super_ddf_all(struct supertype
*st
, int fd
,
3589 void **sbp
, char *devname
)
3592 struct ddf_super
*super
;
3593 struct mdinfo
*sd
, *best
= NULL
;
3599 sra
= sysfs_read(fd
, 0, GET_LEVEL
|GET_VERSION
|GET_DEVS
|GET_STATE
);
3602 if (sra
->array
.major_version
!= -1 ||
3603 sra
->array
.minor_version
!= -2 ||
3604 strcmp(sra
->text_version
, "ddf") != 0)
3607 if (posix_memalign((void**)&super
, 512, sizeof(*super
)) != 0)
3609 memset(super
, 0, sizeof(*super
));
3611 /* first, try each device, and choose the best ddf */
3612 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
3614 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
3615 dfd
= dev_open(nm
, O_RDONLY
);
3618 rv
= load_ddf_headers(dfd
, super
, NULL
);
3621 seq
= be32_to_cpu(super
->active
->seq
);
3622 if (super
->active
->openflag
)
3624 if (!best
|| seq
> bestseq
) {
3632 /* OK, load this ddf */
3633 sprintf(nm
, "%d:%d", best
->disk
.major
, best
->disk
.minor
);
3634 dfd
= dev_open(nm
, O_RDONLY
);
3637 load_ddf_headers(dfd
, super
, NULL
);
3638 load_ddf_global(dfd
, super
, NULL
);
3640 /* Now we need the device-local bits */
3641 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
3644 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
3645 dfd
= dev_open(nm
, O_RDWR
);
3648 rv
= load_ddf_headers(dfd
, super
, NULL
);
3650 rv
= load_ddf_local(dfd
, super
, NULL
, 1);
3656 if (st
->ss
== NULL
) {
3657 st
->ss
= &super_ddf
;
3658 st
->minor_version
= 0;
3661 strcpy(st
->container_devnm
, fd2devnm(fd
));
3665 static int load_container_ddf(struct supertype
*st
, int fd
,
3668 return load_super_ddf_all(st
, fd
, &st
->sb
, devname
);
3671 #endif /* MDASSEMBLE */
3673 static int check_secondary(const struct vcl
*vc
)
3675 const struct vd_config
*conf
= &vc
->conf
;
3678 /* The only DDF secondary RAID level md can support is
3679 * RAID 10, if the stripe sizes and Basic volume sizes
3681 * Other configurations could in theory be supported by exposing
3682 * the BVDs to user space and using device mapper for the secondary
3683 * mapping. So far we don't support that.
3686 __u64 sec_elements
[4] = {0, 0, 0, 0};
3687 #define __set_sec_seen(n) (sec_elements[(n)>>6] |= (1<<((n)&63)))
3688 #define __was_sec_seen(n) ((sec_elements[(n)>>6] & (1<<((n)&63))) != 0)
3690 if (vc
->other_bvds
== NULL
) {
3691 pr_err("No BVDs for secondary RAID found\n");
3694 if (conf
->prl
!= DDF_RAID1
) {
3695 pr_err("Secondary RAID level only supported for mirrored BVD\n");
3698 if (conf
->srl
!= DDF_2STRIPED
&& conf
->srl
!= DDF_2SPANNED
) {
3699 pr_err("Secondary RAID level %d is unsupported\n",
3703 __set_sec_seen(conf
->sec_elmnt_seq
);
3704 for (i
= 0; i
< conf
->sec_elmnt_count
-1; i
++) {
3705 const struct vd_config
*bvd
= vc
->other_bvds
[i
];
3706 if (bvd
->sec_elmnt_seq
== DDF_UNUSED_BVD
)
3708 if (bvd
->srl
!= conf
->srl
) {
3709 pr_err("Inconsistent secondary RAID level across BVDs\n");
3712 if (bvd
->prl
!= conf
->prl
) {
3713 pr_err("Different RAID levels for BVDs are unsupported\n");
3716 if (!be16_eq(bvd
->prim_elmnt_count
, conf
->prim_elmnt_count
)) {
3717 pr_err("All BVDs must have the same number of primary elements\n");
3720 if (bvd
->chunk_shift
!= conf
->chunk_shift
) {
3721 pr_err("Different strip sizes for BVDs are unsupported\n");
3724 if (!be64_eq(bvd
->array_blocks
, conf
->array_blocks
)) {
3725 pr_err("Different BVD sizes are unsupported\n");
3728 __set_sec_seen(bvd
->sec_elmnt_seq
);
3730 for (i
= 0; i
< conf
->sec_elmnt_count
; i
++) {
3731 if (!__was_sec_seen(i
)) {
3732 /* pr_err("BVD %d is missing\n", i); */
3739 static unsigned int get_pd_index_from_refnum(const struct vcl
*vc
,
3740 be32 refnum
, unsigned int nmax
,
3741 const struct vd_config
**bvd
,
3744 unsigned int i
, j
, n
, sec
, cnt
;
3746 cnt
= be16_to_cpu(vc
->conf
.prim_elmnt_count
);
3747 sec
= (vc
->conf
.sec_elmnt_count
== 1 ? 0 : vc
->conf
.sec_elmnt_seq
);
3749 for (i
= 0, j
= 0 ; i
< nmax
; i
++) {
3750 /* j counts valid entries for this BVD */
3751 if (be32_eq(vc
->conf
.phys_refnum
[i
], refnum
)) {
3754 return sec
* cnt
+ j
;
3756 if (be32_to_cpu(vc
->conf
.phys_refnum
[i
]) != 0xffffffff)
3759 if (vc
->other_bvds
== NULL
)
3762 for (n
= 1; n
< vc
->conf
.sec_elmnt_count
; n
++) {
3763 struct vd_config
*vd
= vc
->other_bvds
[n
-1];
3764 sec
= vd
->sec_elmnt_seq
;
3765 if (sec
== DDF_UNUSED_BVD
)
3767 for (i
= 0, j
= 0 ; i
< nmax
; i
++) {
3768 if (be32_eq(vd
->phys_refnum
[i
], refnum
)) {
3771 return sec
* cnt
+ j
;
3773 if (be32_to_cpu(vd
->phys_refnum
[i
]) != 0xffffffff)
3779 return DDF_NOTFOUND
;
3782 static struct mdinfo
*container_content_ddf(struct supertype
*st
, char *subarray
)
3784 /* Given a container loaded by load_super_ddf_all,
3785 * extract information about all the arrays into
3788 * For each vcl in conflist: create an mdinfo, fill it in,
3789 * then look for matching devices (phys_refnum) in dlist
3790 * and create appropriate device mdinfo.
3792 struct ddf_super
*ddf
= st
->sb
;
3793 struct mdinfo
*rest
= NULL
;
3796 for (vc
= ddf
->conflist
; vc
; vc
=vc
->next
) {
3798 struct mdinfo
*this;
3804 (strtoul(subarray
, &ep
, 10) != vc
->vcnum
||
3808 if (vc
->conf
.sec_elmnt_count
> 1) {
3809 if (check_secondary(vc
) != 0)
3813 this = xcalloc(1, sizeof(*this));
3817 if (layout_ddf2md(&vc
->conf
, &this->array
))
3819 this->array
.md_minor
= -1;
3820 this->array
.major_version
= -1;
3821 this->array
.minor_version
= -2;
3822 this->safe_mode_delay
= DDF_SAFE_MODE_DELAY
;
3823 cptr
= (__u32
*)(vc
->conf
.guid
+ 16);
3824 this->array
.ctime
= DECADE
+ __be32_to_cpu(*cptr
);
3825 this->array
.utime
= DECADE
+
3826 be32_to_cpu(vc
->conf
.timestamp
);
3827 this->array
.chunk_size
= 512 << vc
->conf
.chunk_shift
;
3830 if ((ddf
->virt
->entries
[i
].state
& DDF_state_inconsistent
) ||
3831 (ddf
->virt
->entries
[i
].init_state
& DDF_initstate_mask
) !=
3833 this->array
.state
= 0;
3834 this->resync_start
= 0;
3836 this->array
.state
= 1;
3837 this->resync_start
= MaxSector
;
3839 _ddf_array_name(this->name
, ddf
, i
);
3840 memset(this->uuid
, 0, sizeof(this->uuid
));
3841 this->component_size
= be64_to_cpu(vc
->conf
.blocks
);
3842 this->array
.size
= this->component_size
/ 2;
3843 this->container_member
= i
;
3845 ddf
->currentconf
= vc
;
3846 uuid_from_super_ddf(st
, this->uuid
);
3848 ddf
->currentconf
= NULL
;
3850 sprintf(this->text_version
, "/%s/%d",
3851 st
->container_devnm
, this->container_member
);
3853 for (pd
= 0; pd
< be16_to_cpu(ddf
->phys
->max_pdes
); pd
++) {
3856 const struct vd_config
*bvd
;
3860 if (be32_to_cpu(ddf
->phys
->entries
[pd
].refnum
)
3864 stt
= be16_to_cpu(ddf
->phys
->entries
[pd
].state
);
3865 if ((stt
& (DDF_Online
|DDF_Failed
|DDF_Rebuilding
))
3869 i
= get_pd_index_from_refnum(
3870 vc
, ddf
->phys
->entries
[pd
].refnum
,
3871 ddf
->mppe
, &bvd
, &iphys
);
3872 if (i
== DDF_NOTFOUND
)
3875 this->array
.working_disks
++;
3877 for (d
= ddf
->dlist
; d
; d
=d
->next
)
3878 if (be32_eq(d
->disk
.refnum
,
3879 ddf
->phys
->entries
[pd
].refnum
))
3882 /* Haven't found that one yet, maybe there are others */
3885 dev
= xcalloc(1, sizeof(*dev
));
3886 dev
->next
= this->devs
;
3889 dev
->disk
.number
= be32_to_cpu(d
->disk
.refnum
);
3890 dev
->disk
.major
= d
->major
;
3891 dev
->disk
.minor
= d
->minor
;
3892 dev
->disk
.raid_disk
= i
;
3893 dev
->disk
.state
= (1<<MD_DISK_SYNC
)|(1<<MD_DISK_ACTIVE
);
3894 dev
->recovery_start
= MaxSector
;
3896 dev
->events
= be32_to_cpu(ddf
->active
->seq
);
3898 be64_to_cpu(LBA_OFFSET(ddf
, bvd
)[iphys
]);
3899 dev
->component_size
= be64_to_cpu(bvd
->blocks
);
3901 strcpy(dev
->name
, d
->devname
);
3907 static int store_super_ddf(struct supertype
*st
, int fd
)
3909 struct ddf_super
*ddf
= st
->sb
;
3910 unsigned long long dsize
;
3917 if (!get_dev_size(fd
, NULL
, &dsize
))
3920 if (ddf
->dlist
|| ddf
->conflist
) {
3925 if (fstat(fd
, &sta
) == -1 || !S_ISBLK(sta
.st_mode
)) {
3926 pr_err("%s: file descriptor for invalid device\n",
3930 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
3931 if (dl
->major
== (int)major(sta
.st_rdev
) &&
3932 dl
->minor
== (int)minor(sta
.st_rdev
))
3935 pr_err("%s: couldn't find disk %d/%d\n", __func__
,
3936 (int)major(sta
.st_rdev
),
3937 (int)minor(sta
.st_rdev
));
3942 ret
= (_write_super_to_disk(ddf
, dl
) != 1);
3947 if (posix_memalign(&buf
, 512, 512) != 0)
3949 memset(buf
, 0, 512);
3951 lseek64(fd
, dsize
-512, 0);
3952 rc
= write(fd
, buf
, 512);
3959 static int compare_super_ddf(struct supertype
*st
, struct supertype
*tst
)
3963 * 0 same, or first was empty, and second was copied
3964 * 1 second had wrong magic number - but that isn't possible
3966 * 3 wrong other info
3968 struct ddf_super
*first
= st
->sb
;
3969 struct ddf_super
*second
= tst
->sb
;
3970 struct dl
*dl1
, *dl2
;
3971 struct vcl
*vl1
, *vl2
;
3972 unsigned int max_vds
, max_pds
, pd
, vd
;
3980 if (memcmp(first
->anchor
.guid
, second
->anchor
.guid
, DDF_GUID_LEN
) != 0)
3983 /* It is only OK to compare info in the anchor. Anything else
3984 * could be changing due to a reconfig so must be ignored.
3985 * guid really should be enough anyway.
3988 if (!be32_eq(first
->active
->seq
, second
->active
->seq
)) {
3989 dprintf("%s: sequence number mismatch %u<->%u\n", __func__
,
3990 be32_to_cpu(first
->active
->seq
),
3991 be32_to_cpu(second
->active
->seq
));
3996 * At this point we are fairly sure that the meta data matches.
3997 * But the new disk may contain additional local data.
3998 * Add it to the super block.
4000 max_vds
= be16_to_cpu(first
->active
->max_vd_entries
);
4001 max_pds
= be16_to_cpu(first
->phys
->max_pdes
);
4002 for (vl2
= second
->conflist
; vl2
; vl2
= vl2
->next
) {
4003 for (vl1
= first
->conflist
; vl1
; vl1
= vl1
->next
)
4004 if (!memcmp(vl1
->conf
.guid
, vl2
->conf
.guid
,
4008 if (vl1
->other_bvds
!= NULL
&&
4009 vl1
->conf
.sec_elmnt_seq
!=
4010 vl2
->conf
.sec_elmnt_seq
) {
4011 dprintf("%s: adding BVD %u\n", __func__
,
4012 vl2
->conf
.sec_elmnt_seq
);
4013 add_other_bvd(vl1
, &vl2
->conf
,
4014 first
->conf_rec_len
*512);
4019 if (posix_memalign((void **)&vl1
, 512,
4020 (first
->conf_rec_len
*512 +
4021 offsetof(struct vcl
, conf
))) != 0) {
4022 pr_err("%s could not allocate vcl buf\n",
4027 vl1
->next
= first
->conflist
;
4028 vl1
->block_sizes
= NULL
;
4029 memcpy(&vl1
->conf
, &vl2
->conf
, first
->conf_rec_len
*512);
4030 if (alloc_other_bvds(first
, vl1
) != 0) {
4031 pr_err("%s could not allocate other bvds\n",
4036 for (vd
= 0; vd
< max_vds
; vd
++)
4037 if (!memcmp(first
->virt
->entries
[vd
].guid
,
4038 vl1
->conf
.guid
, DDF_GUID_LEN
))
4041 dprintf("%s: added config for VD %u\n", __func__
, vl1
->vcnum
);
4042 first
->conflist
= vl1
;
4045 for (dl2
= second
->dlist
; dl2
; dl2
= dl2
->next
) {
4046 for (dl1
= first
->dlist
; dl1
; dl1
= dl1
->next
)
4047 if (be32_eq(dl1
->disk
.refnum
, dl2
->disk
.refnum
))
4052 if (posix_memalign((void **)&dl1
, 512,
4053 sizeof(*dl1
) + (first
->max_part
) * sizeof(dl1
->vlist
[0]))
4055 pr_err("%s could not allocate disk info buffer\n",
4059 memcpy(dl1
, dl2
, sizeof(*dl1
));
4060 dl1
->mdupdate
= NULL
;
4061 dl1
->next
= first
->dlist
;
4063 for (pd
= 0; pd
< max_pds
; pd
++)
4064 if (be32_eq(first
->phys
->entries
[pd
].refnum
,
4067 dl1
->pdnum
= pd
< max_pds
? (int)pd
: -1;
4069 if (posix_memalign((void **)&dl1
->spare
, 512,
4070 first
->conf_rec_len
*512) != 0) {
4071 pr_err("%s could not allocate spare info buf\n",
4075 memcpy(dl1
->spare
, dl2
->spare
, first
->conf_rec_len
*512);
4077 for (vd
= 0 ; vd
< first
->max_part
; vd
++) {
4078 if (!dl2
->vlist
[vd
]) {
4079 dl1
->vlist
[vd
] = NULL
;
4082 for (vl1
= first
->conflist
; vl1
; vl1
= vl1
->next
) {
4083 if (!memcmp(vl1
->conf
.guid
,
4084 dl2
->vlist
[vd
]->conf
.guid
,
4087 dl1
->vlist
[vd
] = vl1
;
4091 dprintf("%s: added disk %d: %08x\n", __func__
, dl1
->pdnum
,
4092 be32_to_cpu(dl1
->disk
.refnum
));
4100 * A new array 'a' has been started which claims to be instance 'inst'
4101 * within container 'c'.
4102 * We need to confirm that the array matches the metadata in 'c' so
4103 * that we don't corrupt any metadata.
4105 static int ddf_open_new(struct supertype
*c
, struct active_array
*a
, char *inst
)
4107 struct ddf_super
*ddf
= c
->sb
;
4111 static const char faulty
[] = "faulty";
4113 if (all_ff(ddf
->virt
->entries
[n
].guid
)) {
4114 pr_err("%s: subarray %d doesn't exist\n", __func__
, n
);
4117 dprintf("%s: new subarray %d, GUID: %s\n", __func__
, n
,
4118 guid_str(ddf
->virt
->entries
[n
].guid
));
4119 for (dev
= a
->info
.devs
; dev
; dev
= dev
->next
) {
4120 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
4121 if (dl
->major
== dev
->disk
.major
&&
4122 dl
->minor
== dev
->disk
.minor
)
4124 if (!dl
|| dl
->pdnum
< 0) {
4125 pr_err("%s: device %d/%d of subarray %d not found in meta data\n",
4126 __func__
, dev
->disk
.major
, dev
->disk
.minor
, n
);
4129 if ((be16_to_cpu(ddf
->phys
->entries
[dl
->pdnum
].state
) &
4130 (DDF_Online
|DDF_Missing
|DDF_Failed
)) != DDF_Online
) {
4131 pr_err("%s: new subarray %d contains broken device %d/%d (%02x)\n",
4132 __func__
, n
, dl
->major
, dl
->minor
,
4134 ddf
->phys
->entries
[dl
->pdnum
].state
));
4135 if (write(dev
->state_fd
, faulty
, sizeof(faulty
)-1) !=
4137 pr_err("Write to state_fd failed\n");
4138 dev
->curr_state
= DS_FAULTY
;
4141 a
->info
.container_member
= n
;
4145 static void handle_missing(struct ddf_super
*ddf
, struct active_array
*a
, int inst
)
4147 /* This member array is being activated. If any devices
4148 * are missing they must now be marked as failed.
4150 struct vd_config
*vc
;
4158 for (n
= 0; ; n
++) {
4159 vc
= find_vdcr(ddf
, inst
, n
, &n_bvd
, &vcl
);
4162 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
4163 if (be32_eq(dl
->disk
.refnum
, vc
->phys_refnum
[n_bvd
]))
4166 /* Found this disk, so not missing */
4169 /* Mark the device as failed/missing. */
4170 pd
= find_phys(ddf
, vc
->phys_refnum
[n_bvd
]);
4171 if (pd
>= 0 && be16_and(ddf
->phys
->entries
[pd
].state
,
4172 cpu_to_be16(DDF_Online
))) {
4173 be16_clear(ddf
->phys
->entries
[pd
].state
,
4174 cpu_to_be16(DDF_Online
));
4175 be16_set(ddf
->phys
->entries
[pd
].state
,
4176 cpu_to_be16(DDF_Failed
|DDF_Missing
));
4177 vc
->phys_refnum
[n_bvd
] = cpu_to_be32(0);
4178 ddf_set_updates_pending(ddf
, vc
);
4181 /* Mark the array as Degraded */
4182 state
= get_svd_state(ddf
, vcl
);
4183 if (ddf
->virt
->entries
[inst
].state
!=
4184 ((ddf
->virt
->entries
[inst
].state
& ~DDF_state_mask
)
4186 ddf
->virt
->entries
[inst
].state
=
4187 (ddf
->virt
->entries
[inst
].state
& ~DDF_state_mask
)
4189 a
->check_degraded
= 1;
4190 ddf_set_updates_pending(ddf
, vc
);
4196 * The array 'a' is to be marked clean in the metadata.
4197 * If '->resync_start' is not ~(unsigned long long)0, then the array is only
4198 * clean up to the point (in sectors). If that cannot be recorded in the
4199 * metadata, then leave it as dirty.
4201 * For DDF, we need to clear the DDF_state_inconsistent bit in the
4202 * !global! virtual_disk.virtual_entry structure.
4204 static int ddf_set_array_state(struct active_array
*a
, int consistent
)
4206 struct ddf_super
*ddf
= a
->container
->sb
;
4207 int inst
= a
->info
.container_member
;
4208 int old
= ddf
->virt
->entries
[inst
].state
;
4209 if (consistent
== 2) {
4210 handle_missing(ddf
, a
, inst
);
4212 if (!is_resync_complete(&a
->info
))
4216 ddf
->virt
->entries
[inst
].state
&= ~DDF_state_inconsistent
;
4218 ddf
->virt
->entries
[inst
].state
|= DDF_state_inconsistent
;
4219 if (old
!= ddf
->virt
->entries
[inst
].state
)
4220 ddf_set_updates_pending(ddf
, NULL
);
4222 old
= ddf
->virt
->entries
[inst
].init_state
;
4223 ddf
->virt
->entries
[inst
].init_state
&= ~DDF_initstate_mask
;
4224 if (is_resync_complete(&a
->info
))
4225 ddf
->virt
->entries
[inst
].init_state
|= DDF_init_full
;
4226 else if (a
->info
.resync_start
== 0)
4227 ddf
->virt
->entries
[inst
].init_state
|= DDF_init_not
;
4229 ddf
->virt
->entries
[inst
].init_state
|= DDF_init_quick
;
4230 if (old
!= ddf
->virt
->entries
[inst
].init_state
)
4231 ddf_set_updates_pending(ddf
, NULL
);
4233 dprintf("ddf mark %d/%s (%d) %s %llu\n", inst
,
4234 guid_str(ddf
->virt
->entries
[inst
].guid
), a
->curr_state
,
4235 consistent
?"clean":"dirty",
4236 a
->info
.resync_start
);
4240 static int get_bvd_state(const struct ddf_super
*ddf
,
4241 const struct vd_config
*vc
)
4243 unsigned int i
, n_bvd
, working
= 0;
4244 unsigned int n_prim
= be16_to_cpu(vc
->prim_elmnt_count
);
4246 char *avail
= xcalloc(1, n_prim
);
4247 mdu_array_info_t array
;
4249 layout_ddf2md(vc
, &array
);
4251 for (i
= 0; i
< n_prim
; i
++) {
4252 if (!find_index_in_bvd(ddf
, vc
, i
, &n_bvd
))
4254 pd
= find_phys(ddf
, vc
->phys_refnum
[n_bvd
]);
4257 st
= be16_to_cpu(ddf
->phys
->entries
[pd
].state
);
4258 if ((st
& (DDF_Online
|DDF_Failed
|DDF_Rebuilding
))
4265 state
= DDF_state_degraded
;
4266 if (working
== n_prim
)
4267 state
= DDF_state_optimal
;
4273 state
= DDF_state_failed
;
4277 state
= DDF_state_failed
;
4278 else if (working
>= 2)
4279 state
= DDF_state_part_optimal
;
4282 if (!enough(10, n_prim
, array
.layout
, 1, avail
))
4283 state
= DDF_state_failed
;
4287 if (working
< n_prim
- 1)
4288 state
= DDF_state_failed
;
4291 if (working
< n_prim
- 2)
4292 state
= DDF_state_failed
;
4293 else if (working
== n_prim
- 1)
4294 state
= DDF_state_part_optimal
;
4300 static int secondary_state(int state
, int other
, int seclevel
)
4302 if (state
== DDF_state_optimal
&& other
== DDF_state_optimal
)
4303 return DDF_state_optimal
;
4304 if (seclevel
== DDF_2MIRRORED
) {
4305 if (state
== DDF_state_optimal
|| other
== DDF_state_optimal
)
4306 return DDF_state_part_optimal
;
4307 if (state
== DDF_state_failed
&& other
== DDF_state_failed
)
4308 return DDF_state_failed
;
4309 return DDF_state_degraded
;
4311 if (state
== DDF_state_failed
|| other
== DDF_state_failed
)
4312 return DDF_state_failed
;
4313 if (state
== DDF_state_degraded
|| other
== DDF_state_degraded
)
4314 return DDF_state_degraded
;
4315 return DDF_state_part_optimal
;
4319 static int get_svd_state(const struct ddf_super
*ddf
, const struct vcl
*vcl
)
4321 int state
= get_bvd_state(ddf
, &vcl
->conf
);
4323 for (i
= 1; i
< vcl
->conf
.sec_elmnt_count
; i
++) {
4324 state
= secondary_state(
4326 get_bvd_state(ddf
, vcl
->other_bvds
[i
-1]),
4333 * The state of each disk is stored in the global phys_disk structure
4334 * in phys_disk.entries[n].state.
4335 * This makes various combinations awkward.
4336 * - When a device fails in any array, it must be failed in all arrays
4337 * that include a part of this device.
4338 * - When a component is rebuilding, we cannot include it officially in the
4339 * array unless this is the only array that uses the device.
4341 * So: when transitioning:
4342 * Online -> failed, just set failed flag. monitor will propagate
4343 * spare -> online, the device might need to be added to the array.
4344 * spare -> failed, just set failed. Don't worry if in array or not.
4346 static void ddf_set_disk(struct active_array
*a
, int n
, int state
)
4348 struct ddf_super
*ddf
= a
->container
->sb
;
4349 unsigned int inst
= a
->info
.container_member
, n_bvd
;
4351 struct vd_config
*vc
= find_vdcr(ddf
, inst
, (unsigned int)n
,
4358 dprintf("%s: %d to %x\n", __func__
, n
, state
);
4360 dprintf("ddf: cannot find instance %d!!\n", inst
);
4363 /* Find the matching slot in 'info'. */
4364 for (mdi
= a
->info
.devs
; mdi
; mdi
= mdi
->next
)
4365 if (mdi
->disk
.raid_disk
== n
)
4368 pr_err("%s: cannot find raid disk %d\n",
4373 /* and find the 'dl' entry corresponding to that. */
4374 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
4375 if (mdi
->state_fd
>= 0 &&
4376 mdi
->disk
.major
== dl
->major
&&
4377 mdi
->disk
.minor
== dl
->minor
)
4380 pr_err("%s: cannot find raid disk %d (%d/%d)\n",
4382 mdi
->disk
.major
, mdi
->disk
.minor
);
4386 pd
= find_phys(ddf
, vc
->phys_refnum
[n_bvd
]);
4387 if (pd
< 0 || pd
!= dl
->pdnum
) {
4388 /* disk doesn't currently exist or has changed.
4389 * If it is now in_sync, insert it. */
4390 dprintf("%s: phys disk not found for %d: %d/%d ref %08x\n",
4391 __func__
, dl
->pdnum
, dl
->major
, dl
->minor
,
4392 be32_to_cpu(dl
->disk
.refnum
));
4393 dprintf("%s: array %u disk %u ref %08x pd %d\n",
4394 __func__
, inst
, n_bvd
,
4395 be32_to_cpu(vc
->phys_refnum
[n_bvd
]), pd
);
4396 if ((state
& DS_INSYNC
) && ! (state
& DS_FAULTY
) &&
4399 vc
->phys_refnum
[n_bvd
] = dl
->disk
.refnum
;
4400 LBA_OFFSET(ddf
, vc
)[n_bvd
] =
4401 cpu_to_be64(mdi
->data_offset
);
4402 be16_clear(ddf
->phys
->entries
[pd
].type
,
4403 cpu_to_be16(DDF_Global_Spare
));
4404 be16_set(ddf
->phys
->entries
[pd
].type
,
4405 cpu_to_be16(DDF_Active_in_VD
));
4409 be16 old
= ddf
->phys
->entries
[pd
].state
;
4410 if (state
& DS_FAULTY
)
4411 be16_set(ddf
->phys
->entries
[pd
].state
,
4412 cpu_to_be16(DDF_Failed
));
4413 if (state
& DS_INSYNC
) {
4414 be16_set(ddf
->phys
->entries
[pd
].state
,
4415 cpu_to_be16(DDF_Online
));
4416 be16_clear(ddf
->phys
->entries
[pd
].state
,
4417 cpu_to_be16(DDF_Rebuilding
));
4419 if (!be16_eq(old
, ddf
->phys
->entries
[pd
].state
))
4423 dprintf("ddf: set_disk %d (%08x) to %x->%02x\n", n
,
4424 be32_to_cpu(dl
->disk
.refnum
), state
,
4425 be16_to_cpu(ddf
->phys
->entries
[pd
].state
));
4427 /* Now we need to check the state of the array and update
4428 * virtual_disk.entries[n].state.
4429 * It needs to be one of "optimal", "degraded", "failed".
4430 * I don't understand 'deleted' or 'missing'.
4432 state
= get_svd_state(ddf
, vcl
);
4434 if (ddf
->virt
->entries
[inst
].state
!=
4435 ((ddf
->virt
->entries
[inst
].state
& ~DDF_state_mask
)
4437 ddf
->virt
->entries
[inst
].state
=
4438 (ddf
->virt
->entries
[inst
].state
& ~DDF_state_mask
)
4443 ddf_set_updates_pending(ddf
, vc
);
4446 static void ddf_sync_metadata(struct supertype
*st
)
4449 * Write all data to all devices.
4450 * Later, we might be able to track whether only local changes
4451 * have been made, or whether any global data has been changed,
4452 * but ddf is sufficiently weird that it probably always
4453 * changes global data ....
4455 struct ddf_super
*ddf
= st
->sb
;
4456 if (!ddf
->updates_pending
)
4458 ddf
->updates_pending
= 0;
4459 __write_init_super_ddf(st
);
4460 dprintf("ddf: sync_metadata\n");
4463 static int del_from_conflist(struct vcl
**list
, const char *guid
)
4467 for (p
= list
; p
&& *p
; p
= &((*p
)->next
))
4468 if (!memcmp((*p
)->conf
.guid
, guid
, DDF_GUID_LEN
)) {
4475 static int _kill_subarray_ddf(struct ddf_super
*ddf
, const char *guid
)
4478 unsigned int vdnum
, i
;
4479 vdnum
= find_vde_by_guid(ddf
, guid
);
4480 if (vdnum
== DDF_NOTFOUND
) {
4481 pr_err("%s: could not find VD %s\n", __func__
,
4485 if (del_from_conflist(&ddf
->conflist
, guid
) == 0) {
4486 pr_err("%s: could not find conf %s\n", __func__
,
4490 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
4491 for (i
= 0; i
< ddf
->max_part
; i
++)
4492 if (dl
->vlist
[i
] != NULL
&&
4493 !memcmp(dl
->vlist
[i
]->conf
.guid
, guid
,
4495 dl
->vlist
[i
] = NULL
;
4496 memset(ddf
->virt
->entries
[vdnum
].guid
, 0xff, DDF_GUID_LEN
);
4497 dprintf("%s: deleted %s\n", __func__
, guid_str(guid
));
4501 static int kill_subarray_ddf(struct supertype
*st
)
4503 struct ddf_super
*ddf
= st
->sb
;
4505 * currentconf is set in container_content_ddf,
4506 * called with subarray arg
4508 struct vcl
*victim
= ddf
->currentconf
;
4509 struct vd_config
*conf
;
4512 ddf
->currentconf
= NULL
;
4514 pr_err("%s: nothing to kill\n", __func__
);
4517 conf
= &victim
->conf
;
4518 vdnum
= find_vde_by_guid(ddf
, conf
->guid
);
4519 if (vdnum
== DDF_NOTFOUND
) {
4520 pr_err("%s: could not find VD %s\n", __func__
,
4521 guid_str(conf
->guid
));
4524 if (st
->update_tail
) {
4525 struct virtual_disk
*vd
;
4526 int len
= sizeof(struct virtual_disk
)
4527 + sizeof(struct virtual_entry
);
4530 pr_err("%s: failed to allocate %d bytes\n", __func__
,
4534 memset(vd
, 0 , len
);
4535 vd
->magic
= DDF_VIRT_RECORDS_MAGIC
;
4536 vd
->populated_vdes
= cpu_to_be16(0);
4537 memcpy(vd
->entries
[0].guid
, conf
->guid
, DDF_GUID_LEN
);
4538 /* we use DDF_state_deleted as marker */
4539 vd
->entries
[0].state
= DDF_state_deleted
;
4540 append_metadata_update(st
, vd
, len
);
4542 _kill_subarray_ddf(ddf
, conf
->guid
);
4543 ddf_set_updates_pending(ddf
, NULL
);
4544 ddf_sync_metadata(st
);
4549 static void copy_matching_bvd(struct ddf_super
*ddf
,
4550 struct vd_config
*conf
,
4551 const struct metadata_update
*update
)
4554 be16_to_cpu(ddf
->anchor
.max_primary_element_entries
);
4555 unsigned int len
= ddf
->conf_rec_len
* 512;
4557 struct vd_config
*vc
;
4558 for (p
= update
->buf
; p
< update
->buf
+ update
->len
; p
+= len
) {
4559 vc
= (struct vd_config
*) p
;
4560 if (vc
->sec_elmnt_seq
== conf
->sec_elmnt_seq
) {
4561 memcpy(conf
->phys_refnum
, vc
->phys_refnum
,
4562 mppe
* (sizeof(__u32
) + sizeof(__u64
)));
4566 pr_err("%s: no match for BVD %d of %s in update\n", __func__
,
4567 conf
->sec_elmnt_seq
, guid_str(conf
->guid
));
4570 static void ddf_process_phys_update(struct supertype
*st
,
4571 struct metadata_update
*update
)
4573 struct ddf_super
*ddf
= st
->sb
;
4574 struct phys_disk
*pd
;
4577 pd
= (struct phys_disk
*)update
->buf
;
4578 ent
= be16_to_cpu(pd
->used_pdes
);
4579 if (ent
>= be16_to_cpu(ddf
->phys
->max_pdes
))
4581 if (be16_and(pd
->entries
[0].state
, cpu_to_be16(DDF_Missing
))) {
4583 /* removing this disk. */
4584 be16_set(ddf
->phys
->entries
[ent
].state
,
4585 cpu_to_be16(DDF_Missing
));
4586 for (dlp
= &ddf
->dlist
; *dlp
; dlp
= &(*dlp
)->next
) {
4587 struct dl
*dl
= *dlp
;
4588 if (dl
->pdnum
== (signed)ent
) {
4592 update
->space
= dl
->devname
;
4593 *(void**)dl
= update
->space_list
;
4594 update
->space_list
= (void**)dl
;
4598 ddf_set_updates_pending(ddf
, NULL
);
4601 if (!all_ff(ddf
->phys
->entries
[ent
].guid
))
4603 ddf
->phys
->entries
[ent
] = pd
->entries
[0];
4604 ddf
->phys
->used_pdes
= cpu_to_be16
4605 (1 + be16_to_cpu(ddf
->phys
->used_pdes
));
4606 ddf_set_updates_pending(ddf
, NULL
);
4607 if (ddf
->add_list
) {
4608 struct active_array
*a
;
4609 struct dl
*al
= ddf
->add_list
;
4610 ddf
->add_list
= al
->next
;
4612 al
->next
= ddf
->dlist
;
4615 /* As a device has been added, we should check
4616 * for any degraded devices that might make
4617 * use of this spare */
4618 for (a
= st
->arrays
; a
; a
=a
->next
)
4619 a
->check_degraded
= 1;
4623 static void ddf_process_virt_update(struct supertype
*st
,
4624 struct metadata_update
*update
)
4626 struct ddf_super
*ddf
= st
->sb
;
4627 struct virtual_disk
*vd
;
4630 vd
= (struct virtual_disk
*)update
->buf
;
4632 if (vd
->entries
[0].state
== DDF_state_deleted
) {
4633 if (_kill_subarray_ddf(ddf
, vd
->entries
[0].guid
))
4636 ent
= find_vde_by_guid(ddf
, vd
->entries
[0].guid
);
4637 if (ent
!= DDF_NOTFOUND
) {
4638 dprintf("%s: VD %s exists already in slot %d\n",
4639 __func__
, guid_str(vd
->entries
[0].guid
),
4643 ent
= find_unused_vde(ddf
);
4644 if (ent
== DDF_NOTFOUND
)
4646 ddf
->virt
->entries
[ent
] = vd
->entries
[0];
4647 ddf
->virt
->populated_vdes
=
4650 ddf
->virt
->populated_vdes
));
4651 dprintf("%s: added VD %s in slot %d(s=%02x i=%02x)\n",
4652 __func__
, guid_str(vd
->entries
[0].guid
), ent
,
4653 ddf
->virt
->entries
[ent
].state
,
4654 ddf
->virt
->entries
[ent
].init_state
);
4656 ddf_set_updates_pending(ddf
, NULL
);
4659 static void ddf_remove_failed(struct ddf_super
*ddf
)
4661 /* Now remove any 'Failed' devices that are not part
4662 * of any VD. They will have the Transition flag set.
4663 * Once done, we need to update all dl->pdnum numbers.
4666 unsigned int pd2
= 0;
4669 for (pdnum
= 0; pdnum
< be16_to_cpu(ddf
->phys
->max_pdes
);
4671 if (be32_to_cpu(ddf
->phys
->entries
[pdnum
].refnum
) ==
4674 if (be16_and(ddf
->phys
->entries
[pdnum
].state
,
4675 cpu_to_be16(DDF_Failed
))
4676 && be16_and(ddf
->phys
->entries
[pdnum
].state
,
4677 cpu_to_be16(DDF_Transition
))) {
4678 /* skip this one unless in dlist*/
4679 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
4680 if (dl
->pdnum
== (int)pdnum
)
4688 ddf
->phys
->entries
[pd2
] =
4689 ddf
->phys
->entries
[pdnum
];
4690 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
4691 if (dl
->pdnum
== (int)pdnum
)
4696 ddf
->phys
->used_pdes
= cpu_to_be16(pd2
);
4697 while (pd2
< pdnum
) {
4698 memset(ddf
->phys
->entries
[pd2
].guid
, 0xff,
4704 static void ddf_update_vlist(struct ddf_super
*ddf
, struct dl
*dl
)
4707 unsigned int vn
= 0;
4708 int in_degraded
= 0;
4712 for (vcl
= ddf
->conflist
; vcl
; vcl
= vcl
->next
) {
4713 unsigned int dn
, ibvd
;
4714 const struct vd_config
*conf
;
4716 dn
= get_pd_index_from_refnum(vcl
,
4720 if (dn
== DDF_NOTFOUND
)
4722 dprintf("dev %d/%08x has %s (sec=%u) at %d\n",
4724 be32_to_cpu(dl
->disk
.refnum
),
4725 guid_str(conf
->guid
),
4726 conf
->sec_elmnt_seq
, vn
);
4727 /* Clear the Transition flag */
4729 (ddf
->phys
->entries
[dl
->pdnum
].state
,
4730 cpu_to_be16(DDF_Failed
)))
4731 be16_clear(ddf
->phys
4732 ->entries
[dl
->pdnum
].state
,
4733 cpu_to_be16(DDF_Transition
));
4734 dl
->vlist
[vn
++] = vcl
;
4735 vstate
= ddf
->virt
->entries
[vcl
->vcnum
].state
4737 if (vstate
== DDF_state_degraded
||
4738 vstate
== DDF_state_part_optimal
)
4741 while (vn
< ddf
->max_part
)
4742 dl
->vlist
[vn
++] = NULL
;
4744 be16_clear(ddf
->phys
->entries
[dl
->pdnum
].type
,
4745 cpu_to_be16(DDF_Global_Spare
));
4746 if (!be16_and(ddf
->phys
4747 ->entries
[dl
->pdnum
].type
,
4748 cpu_to_be16(DDF_Active_in_VD
))) {
4750 ->entries
[dl
->pdnum
].type
,
4751 cpu_to_be16(DDF_Active_in_VD
));
4754 ->entries
[dl
->pdnum
]
4761 be16_clear(ddf
->phys
->entries
[dl
->pdnum
].type
,
4762 cpu_to_be16(DDF_Global_Spare
));
4763 be16_set(ddf
->phys
->entries
[dl
->pdnum
].type
,
4764 cpu_to_be16(DDF_Spare
));
4766 if (!dl
->vlist
[0] && !dl
->spare
) {
4767 be16_set(ddf
->phys
->entries
[dl
->pdnum
].type
,
4768 cpu_to_be16(DDF_Global_Spare
));
4769 be16_clear(ddf
->phys
->entries
[dl
->pdnum
].type
,
4770 cpu_to_be16(DDF_Spare
));
4771 be16_clear(ddf
->phys
->entries
[dl
->pdnum
].type
,
4772 cpu_to_be16(DDF_Active_in_VD
));
4776 static void ddf_process_conf_update(struct supertype
*st
,
4777 struct metadata_update
*update
)
4779 struct ddf_super
*ddf
= st
->sb
;
4780 struct vd_config
*vc
;
4784 unsigned int pdnum
, len
;
4786 vc
= (struct vd_config
*)update
->buf
;
4787 len
= ddf
->conf_rec_len
* 512;
4788 if ((unsigned int)update
->len
!= len
* vc
->sec_elmnt_count
) {
4789 pr_err("%s: %s: insufficient data (%d) for %u BVDs\n",
4790 __func__
, guid_str(vc
->guid
), update
->len
,
4791 vc
->sec_elmnt_count
);
4794 for (vcl
= ddf
->conflist
; vcl
; vcl
= vcl
->next
)
4795 if (memcmp(vcl
->conf
.guid
, vc
->guid
, DDF_GUID_LEN
) == 0)
4797 dprintf("%s: conf update for %s (%s)\n", __func__
,
4798 guid_str(vc
->guid
), (vcl
? "old" : "new"));
4800 /* An update, just copy the phys_refnum and lba_offset
4805 copy_matching_bvd(ddf
, &vcl
->conf
, update
);
4806 for (k
= 0; k
< be16_to_cpu(vc
->prim_elmnt_count
); k
++)
4807 dprintf("BVD %u has %08x at %llu\n", 0,
4808 be32_to_cpu(vcl
->conf
.phys_refnum
[k
]),
4809 be64_to_cpu(LBA_OFFSET(ddf
,
4811 for (i
= 1; i
< vc
->sec_elmnt_count
; i
++) {
4812 copy_matching_bvd(ddf
, vcl
->other_bvds
[i
-1],
4814 for (k
= 0; k
< be16_to_cpu(
4815 vc
->prim_elmnt_count
); k
++)
4816 dprintf("BVD %u has %08x at %llu\n", i
,
4818 (vcl
->other_bvds
[i
-1]->
4823 vcl
->other_bvds
[i
-1])[k
]));
4830 vcl
= update
->space
;
4831 update
->space
= NULL
;
4832 vcl
->next
= ddf
->conflist
;
4833 memcpy(&vcl
->conf
, vc
, len
);
4834 ent
= find_vde_by_guid(ddf
, vc
->guid
);
4835 if (ent
== DDF_NOTFOUND
)
4838 ddf
->conflist
= vcl
;
4839 for (i
= 1; i
< vc
->sec_elmnt_count
; i
++)
4840 memcpy(vcl
->other_bvds
[i
-1],
4841 update
->buf
+ len
* i
, len
);
4843 /* Set DDF_Transition on all Failed devices - to help
4844 * us detect those that are no longer in use
4846 for (pdnum
= 0; pdnum
< be16_to_cpu(ddf
->phys
->max_pdes
);
4848 if (be16_and(ddf
->phys
->entries
[pdnum
].state
,
4849 cpu_to_be16(DDF_Failed
)))
4850 be16_set(ddf
->phys
->entries
[pdnum
].state
,
4851 cpu_to_be16(DDF_Transition
));
4853 /* Now make sure vlist is correct for each dl. */
4854 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
4855 ddf_update_vlist(ddf
, dl
);
4856 ddf_remove_failed(ddf
);
4858 ddf_set_updates_pending(ddf
, vc
);
4861 static void ddf_process_update(struct supertype
*st
,
4862 struct metadata_update
*update
)
4864 /* Apply this update to the metadata.
4865 * The first 4 bytes are a DDF_*_MAGIC which guides
4867 * Possible update are:
4868 * DDF_PHYS_RECORDS_MAGIC
4869 * Add a new physical device or remove an old one.
4870 * Changes to this record only happen implicitly.
4871 * used_pdes is the device number.
4872 * DDF_VIRT_RECORDS_MAGIC
4873 * Add a new VD. Possibly also change the 'access' bits.
4874 * populated_vdes is the entry number.
4876 * New or updated VD. the VIRT_RECORD must already
4877 * exist. For an update, phys_refnum and lba_offset
4878 * (at least) are updated, and the VD_CONF must
4879 * be written to precisely those devices listed with
4881 * DDF_SPARE_ASSIGN_MAGIC
4882 * replacement Spare Assignment Record... but for which device?
4885 * - to create a new array, we send a VIRT_RECORD and
4886 * a VD_CONF. Then assemble and start the array.
4887 * - to activate a spare we send a VD_CONF to add the phys_refnum
4888 * and offset. This will also mark the spare as active with
4889 * a spare-assignment record.
4891 be32
*magic
= (be32
*)update
->buf
;
4893 dprintf("Process update %x\n", be32_to_cpu(*magic
));
4895 if (be32_eq(*magic
, DDF_PHYS_RECORDS_MAGIC
)) {
4896 if (update
->len
== (sizeof(struct phys_disk
) +
4897 sizeof(struct phys_disk_entry
)))
4898 ddf_process_phys_update(st
, update
);
4899 } else if (be32_eq(*magic
, DDF_VIRT_RECORDS_MAGIC
)) {
4900 if (update
->len
== (sizeof(struct virtual_disk
) +
4901 sizeof(struct virtual_entry
)))
4902 ddf_process_virt_update(st
, update
);
4903 } else if (be32_eq(*magic
, DDF_VD_CONF_MAGIC
)) {
4904 ddf_process_conf_update(st
, update
);
4906 /* case DDF_SPARE_ASSIGN_MAGIC */
4909 static int ddf_prepare_update(struct supertype
*st
,
4910 struct metadata_update
*update
)
4912 /* This update arrived at managemon.
4913 * We are about to pass it to monitor.
4914 * If a malloc is needed, do it here.
4916 struct ddf_super
*ddf
= st
->sb
;
4918 if (update
->len
< 4)
4920 magic
= (be32
*)update
->buf
;
4921 if (be32_eq(*magic
, DDF_VD_CONF_MAGIC
)) {
4923 struct vd_config
*conf
;
4924 if (update
->len
< (int)sizeof(*conf
))
4926 conf
= (struct vd_config
*) update
->buf
;
4927 if (posix_memalign(&update
->space
, 512,
4928 offsetof(struct vcl
, conf
)
4929 + ddf
->conf_rec_len
* 512) != 0) {
4930 update
->space
= NULL
;
4933 vcl
= update
->space
;
4934 vcl
->conf
.sec_elmnt_count
= conf
->sec_elmnt_count
;
4935 if (alloc_other_bvds(ddf
, vcl
) != 0) {
4936 free(update
->space
);
4937 update
->space
= NULL
;
4945 * Check degraded state of a RAID10.
4946 * returns 2 for good, 1 for degraded, 0 for failed, and -1 for error
4948 static int raid10_degraded(struct mdinfo
*info
)
4956 n_prim
= info
->array
.layout
& ~0x100;
4957 n_bvds
= info
->array
.raid_disks
/ n_prim
;
4958 found
= xmalloc(n_bvds
);
4961 memset(found
, 0, n_bvds
);
4962 for (d
= info
->devs
; d
; d
= d
->next
) {
4963 i
= d
->disk
.raid_disk
/ n_prim
;
4965 pr_err("%s: BUG: invalid raid disk\n", __func__
);
4968 if (d
->state_fd
> 0)
4972 for (i
= 0; i
< n_bvds
; i
++)
4974 dprintf("%s: BVD %d/%d failed\n", __func__
, i
, n_bvds
);
4977 } else if (found
[i
] < n_prim
) {
4978 dprintf("%s: BVD %d/%d degraded\n", __func__
, i
,
4988 * Check if the array 'a' is degraded but not failed.
4989 * If it is, find as many spares as are available and needed and
4990 * arrange for their inclusion.
4991 * We only choose devices which are not already in the array,
4992 * and prefer those with a spare-assignment to this array.
4993 * Otherwise we choose global spares - assuming always that
4994 * there is enough room.
4995 * For each spare that we assign, we return an 'mdinfo' which
4996 * describes the position for the device in the array.
4997 * We also add to 'updates' a DDF_VD_CONF_MAGIC update with
4998 * the new phys_refnum and lba_offset values.
5000 * Only worry about BVDs at the moment.
5002 static struct mdinfo
*ddf_activate_spare(struct active_array
*a
,
5003 struct metadata_update
**updates
)
5007 struct ddf_super
*ddf
= a
->container
->sb
;
5009 struct mdinfo
*rv
= NULL
;
5011 struct metadata_update
*mu
;
5016 struct vd_config
*vc
;
5019 for (d
= a
->info
.devs
; d
; d
= d
->next
) {
5020 if ((d
->curr_state
& DS_FAULTY
) &&
5022 /* wait for Removal to happen */
5024 if (d
->state_fd
>= 0)
5028 dprintf("%s: working=%d (%d) level=%d\n", __func__
, working
,
5029 a
->info
.array
.raid_disks
,
5030 a
->info
.array
.level
);
5031 if (working
== a
->info
.array
.raid_disks
)
5032 return NULL
; /* array not degraded */
5033 switch (a
->info
.array
.level
) {
5036 return NULL
; /* failed */
5040 if (working
< a
->info
.array
.raid_disks
- 1)
5041 return NULL
; /* failed */
5044 if (working
< a
->info
.array
.raid_disks
- 2)
5045 return NULL
; /* failed */
5048 if (raid10_degraded(&a
->info
) < 1)
5051 default: /* concat or stripe */
5052 return NULL
; /* failed */
5055 /* For each slot, if it is not working, find a spare */
5057 for (i
= 0; i
< a
->info
.array
.raid_disks
; i
++) {
5058 for (d
= a
->info
.devs
; d
; d
= d
->next
)
5059 if (d
->disk
.raid_disk
== i
)
5061 dprintf("found %d: %p %x\n", i
, d
, d
?d
->curr_state
:0);
5062 if (d
&& (d
->state_fd
>= 0))
5065 /* OK, this device needs recovery. Find a spare */
5067 for ( ; dl
; dl
= dl
->next
) {
5068 unsigned long long esize
;
5069 unsigned long long pos
;
5072 int is_dedicated
= 0;
5077 state
= ddf
->phys
->entries
[dl
->pdnum
].state
;
5079 cpu_to_be16(DDF_Failed
|DDF_Missing
)) ||
5081 cpu_to_be16(DDF_Online
)))
5084 /* If in this array, skip */
5085 for (d2
= a
->info
.devs
; d2
; d2
= d2
->next
)
5086 if (d2
->state_fd
>= 0 &&
5087 d2
->disk
.major
== dl
->major
&&
5088 d2
->disk
.minor
== dl
->minor
) {
5089 dprintf("%x:%x (%08x) already in array\n",
5090 dl
->major
, dl
->minor
,
5091 be32_to_cpu(dl
->disk
.refnum
));
5096 if (be16_and(ddf
->phys
->entries
[dl
->pdnum
].type
,
5097 cpu_to_be16(DDF_Spare
))) {
5098 /* Check spare assign record */
5100 if (dl
->spare
->type
& DDF_spare_dedicated
) {
5101 /* check spare_ents for guid */
5108 if (memcmp(dl
->spare
->spare_ents
[j
].guid
,
5109 ddf
->virt
->entries
[a
->info
.container_member
].guid
,
5116 } else if (be16_and(ddf
->phys
->entries
[dl
->pdnum
].type
,
5117 cpu_to_be16(DDF_Global_Spare
))) {
5119 } else if (!be16_and(ddf
->phys
5120 ->entries
[dl
->pdnum
].state
,
5121 cpu_to_be16(DDF_Failed
))) {
5122 /* we can possibly use some of this */
5125 if ( ! (is_dedicated
||
5126 (is_global
&& global_ok
))) {
5127 dprintf("%x:%x not suitable: %d %d\n", dl
->major
, dl
->minor
,
5128 is_dedicated
, is_global
);
5132 /* We are allowed to use this device - is there space?
5133 * We need a->info.component_size sectors */
5134 esize
= a
->info
.component_size
;
5135 pos
= find_space(ddf
, dl
, INVALID_SECTORS
, &esize
);
5137 if (esize
< a
->info
.component_size
) {
5138 dprintf("%x:%x has no room: %llu %llu\n",
5139 dl
->major
, dl
->minor
,
5140 esize
, a
->info
.component_size
);
5145 /* Cool, we have a device with some space at pos */
5146 di
= xcalloc(1, sizeof(*di
));
5147 di
->disk
.number
= i
;
5148 di
->disk
.raid_disk
= i
;
5149 di
->disk
.major
= dl
->major
;
5150 di
->disk
.minor
= dl
->minor
;
5152 di
->recovery_start
= 0;
5153 di
->data_offset
= pos
;
5154 di
->component_size
= a
->info
.component_size
;
5157 dprintf("%x:%x (%08x) to be %d at %llu\n",
5158 dl
->major
, dl
->minor
,
5159 be32_to_cpu(dl
->disk
.refnum
), i
, pos
);
5163 if (!dl
&& ! global_ok
) {
5164 /* not enough dedicated spares, try global */
5172 /* No spares found */
5174 /* Now 'rv' has a list of devices to return.
5175 * Create a metadata_update record to update the
5176 * phys_refnum and lba_offset values
5178 vc
= find_vdcr(ddf
, a
->info
.container_member
, rv
->disk
.raid_disk
,
5183 mu
= xmalloc(sizeof(*mu
));
5184 if (posix_memalign(&mu
->space
, 512, sizeof(struct vcl
)) != 0) {
5189 mu
->len
= ddf
->conf_rec_len
* 512 * vcl
->conf
.sec_elmnt_count
;
5190 mu
->buf
= xmalloc(mu
->len
);
5192 mu
->space_list
= NULL
;
5193 mu
->next
= *updates
;
5194 memcpy(mu
->buf
, &vcl
->conf
, ddf
->conf_rec_len
* 512);
5195 for (j
= 1; j
< vcl
->conf
.sec_elmnt_count
; j
++)
5196 memcpy(mu
->buf
+ j
* ddf
->conf_rec_len
* 512,
5197 vcl
->other_bvds
[j
-1], ddf
->conf_rec_len
* 512);
5199 vc
= (struct vd_config
*)mu
->buf
;
5200 for (di
= rv
; di
; di
= di
->next
) {
5201 unsigned int i_sec
, i_prim
;
5202 i_sec
= di
->disk
.raid_disk
5203 / be16_to_cpu(vcl
->conf
.prim_elmnt_count
);
5204 i_prim
= di
->disk
.raid_disk
5205 % be16_to_cpu(vcl
->conf
.prim_elmnt_count
);
5206 vc
= (struct vd_config
*)(mu
->buf
5207 + i_sec
* ddf
->conf_rec_len
* 512);
5208 for (dl
= ddf
->dlist
; dl
; dl
= dl
->next
)
5209 if (dl
->major
== di
->disk
.major
5210 && dl
->minor
== di
->disk
.minor
)
5212 if (!dl
|| dl
->pdnum
< 0) {
5213 pr_err("%s: BUG: can't find disk %d (%d/%d)\n",
5214 __func__
, di
->disk
.raid_disk
,
5215 di
->disk
.major
, di
->disk
.minor
);
5218 vc
->phys_refnum
[i_prim
] = ddf
->phys
->entries
[dl
->pdnum
].refnum
;
5219 LBA_OFFSET(ddf
, vc
)[i_prim
] = cpu_to_be64(di
->data_offset
);
5220 dprintf("BVD %u gets %u: %08x at %llu\n", i_sec
, i_prim
,
5221 be32_to_cpu(vc
->phys_refnum
[i_prim
]),
5222 be64_to_cpu(LBA_OFFSET(ddf
, vc
)[i_prim
]));
5227 #endif /* MDASSEMBLE */
5229 static int ddf_level_to_layout(int level
)
5236 return ALGORITHM_LEFT_SYMMETRIC
;
5238 return ALGORITHM_ROTATING_N_CONTINUE
;
5246 static void default_geometry_ddf(struct supertype
*st
, int *level
, int *layout
, int *chunk
)
5248 if (level
&& *level
== UnSet
)
5249 *level
= LEVEL_CONTAINER
;
5251 if (level
&& layout
&& *layout
== UnSet
)
5252 *layout
= ddf_level_to_layout(*level
);
5255 struct superswitch super_ddf
= {
5257 .examine_super
= examine_super_ddf
,
5258 .brief_examine_super
= brief_examine_super_ddf
,
5259 .brief_examine_subarrays
= brief_examine_subarrays_ddf
,
5260 .export_examine_super
= export_examine_super_ddf
,
5261 .detail_super
= detail_super_ddf
,
5262 .brief_detail_super
= brief_detail_super_ddf
,
5263 .validate_geometry
= validate_geometry_ddf
,
5264 .write_init_super
= write_init_super_ddf
,
5265 .add_to_super
= add_to_super_ddf
,
5266 .remove_from_super
= remove_from_super_ddf
,
5267 .load_container
= load_container_ddf
,
5268 .copy_metadata
= copy_metadata_ddf
,
5269 .kill_subarray
= kill_subarray_ddf
,
5271 .match_home
= match_home_ddf
,
5272 .uuid_from_super
= uuid_from_super_ddf
,
5273 .getinfo_super
= getinfo_super_ddf
,
5274 .update_super
= update_super_ddf
,
5276 .avail_size
= avail_size_ddf
,
5278 .compare_super
= compare_super_ddf
,
5280 .load_super
= load_super_ddf
,
5281 .init_super
= init_super_ddf
,
5282 .store_super
= store_super_ddf
,
5283 .free_super
= free_super_ddf
,
5284 .match_metadata_desc
= match_metadata_desc_ddf
,
5285 .container_content
= container_content_ddf
,
5286 .default_geometry
= default_geometry_ddf
,
5292 .open_new
= ddf_open_new
,
5293 .set_array_state
= ddf_set_array_state
,
5294 .set_disk
= ddf_set_disk
,
5295 .sync_metadata
= ddf_sync_metadata
,
5296 .process_update
= ddf_process_update
,
5297 .prepare_update
= ddf_prepare_update
,
5298 .activate_spare
= ddf_activate_spare
,