2 * mdadm - Intel(R) Matrix Storage Manager Support
4 * Copyright (C) 2002-2008 Intel Corporation
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License along with
16 * this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
20 #define HAVE_STDINT_H 1
24 #include "platform-intel.h"
30 /* MPB == Metadata Parameter Block */
31 #define MPB_SIGNATURE "Intel Raid ISM Cfg Sig. "
32 #define MPB_SIG_LEN (strlen(MPB_SIGNATURE))
33 #define MPB_VERSION_RAID0 "1.0.00"
34 #define MPB_VERSION_RAID1 "1.1.00"
35 #define MPB_VERSION_MANY_VOLUMES_PER_ARRAY "1.2.00"
36 #define MPB_VERSION_3OR4_DISK_ARRAY "1.2.01"
37 #define MPB_VERSION_RAID5 "1.2.02"
38 #define MPB_VERSION_5OR6_DISK_ARRAY "1.2.04"
39 #define MPB_VERSION_CNG "1.2.06"
40 #define MPB_VERSION_ATTRIBS "1.3.00"
41 #define MAX_SIGNATURE_LENGTH 32
42 #define MAX_RAID_SERIAL_LEN 16
45 #define MPB_ATTRIB_RAID0 __cpu_to_le32(0x00000001)
47 #define MPB_ATTRIB_RAID1 __cpu_to_le32(0x00000002)
49 #define MPB_ATTRIB_RAID10 __cpu_to_le32(0x00000004)
51 #define MPB_ATTRIB_RAID1E __cpu_to_le32(0x00000008)
53 #define MPB_ATTRIB_RAID5 __cpu_to_le32(0x00000010)
54 /* supports RAID CNG */
55 #define MPB_ATTRIB_RAIDCNG __cpu_to_le32(0x00000020)
56 /* supports expanded stripe sizes of 256K, 512K and 1MB */
57 #define MPB_ATTRIB_EXP_STRIPE_SIZE __cpu_to_le32(0x00000040)
59 /* The OROM Support RST Caching of Volumes */
60 #define MPB_ATTRIB_NVM __cpu_to_le32(0x02000000)
61 /* The OROM supports creating disks greater than 2TB */
62 #define MPB_ATTRIB_2TB_DISK __cpu_to_le32(0x04000000)
63 /* The OROM supports Bad Block Management */
64 #define MPB_ATTRIB_BBM __cpu_to_le32(0x08000000)
66 /* THe OROM Supports NVM Caching of Volumes */
67 #define MPB_ATTRIB_NEVER_USE2 __cpu_to_le32(0x10000000)
68 /* The OROM supports creating volumes greater than 2TB */
69 #define MPB_ATTRIB_2TB __cpu_to_le32(0x20000000)
70 /* originally for PMP, now it's wasted b/c. Never use this bit! */
71 #define MPB_ATTRIB_NEVER_USE __cpu_to_le32(0x40000000)
72 /* Verify MPB contents against checksum after reading MPB */
73 #define MPB_ATTRIB_CHECKSUM_VERIFY __cpu_to_le32(0x80000000)
75 /* Define all supported attributes that have to be accepted by mdadm
77 #define MPB_ATTRIB_SUPPORTED (MPB_ATTRIB_CHECKSUM_VERIFY | \
79 MPB_ATTRIB_2TB_DISK | \
84 MPB_ATTRIB_EXP_STRIPE_SIZE)
86 /* Define attributes that are unused but not harmful */
87 #define MPB_ATTRIB_IGNORED (MPB_ATTRIB_NEVER_USE)
89 #define MPB_SECTOR_CNT 2210
90 #define IMSM_RESERVED_SECTORS 4096
91 #define NUM_BLOCKS_DIRTY_STRIPE_REGION 2056
92 #define SECT_PER_MB_SHIFT 11
94 /* Disk configuration info. */
95 #define IMSM_MAX_DEVICES 255
97 __u8 serial
[MAX_RAID_SERIAL_LEN
];/* 0xD8 - 0xE7 ascii serial number */
98 __u32 total_blocks_lo
; /* 0xE8 - 0xEB total blocks lo */
99 __u32 scsi_id
; /* 0xEC - 0xEF scsi ID */
100 #define SPARE_DISK __cpu_to_le32(0x01) /* Spare */
101 #define CONFIGURED_DISK __cpu_to_le32(0x02) /* Member of some RaidDev */
102 #define FAILED_DISK __cpu_to_le32(0x04) /* Permanent failure */
103 __u32 status
; /* 0xF0 - 0xF3 */
104 __u32 owner_cfg_num
; /* which config 0,1,2... owns this disk */
105 __u32 total_blocks_hi
; /* 0xF4 - 0xF5 total blocks hi */
106 #define IMSM_DISK_FILLERS 3
107 __u32 filler
[IMSM_DISK_FILLERS
]; /* 0xF5 - 0x107 MPB_DISK_FILLERS for future expansion */
110 /* map selector for map managment
116 /* RAID map configuration infos. */
118 __u32 pba_of_lba0_lo
; /* start address of partition */
119 __u32 blocks_per_member_lo
;/* blocks per member */
120 __u32 num_data_stripes_lo
; /* number of data stripes */
121 __u16 blocks_per_strip
;
122 __u8 map_state
; /* Normal, Uninitialized, Degraded, Failed */
123 #define IMSM_T_STATE_NORMAL 0
124 #define IMSM_T_STATE_UNINITIALIZED 1
125 #define IMSM_T_STATE_DEGRADED 2
126 #define IMSM_T_STATE_FAILED 3
128 #define IMSM_T_RAID0 0
129 #define IMSM_T_RAID1 1
130 #define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */
131 __u8 num_members
; /* number of member disks */
132 __u8 num_domains
; /* number of parity domains */
133 __u8 failed_disk_num
; /* valid only when state is degraded */
135 __u32 pba_of_lba0_hi
;
136 __u32 blocks_per_member_hi
;
137 __u32 num_data_stripes_hi
;
138 __u32 filler
[4]; /* expansion area */
139 #define IMSM_ORD_REBUILD (1 << 24)
140 __u32 disk_ord_tbl
[1]; /* disk_ord_tbl[num_members],
141 * top byte contains some flags
143 } __attribute__ ((packed
));
146 __u32 curr_migr_unit
;
147 __u32 checkpoint_id
; /* id to access curr_migr_unit */
148 __u8 migr_state
; /* Normal or Migrating */
150 #define MIGR_REBUILD 1
151 #define MIGR_VERIFY 2 /* analagous to echo check > sync_action */
152 #define MIGR_GEN_MIGR 3
153 #define MIGR_STATE_CHANGE 4
154 #define MIGR_REPAIR 5
155 __u8 migr_type
; /* Initializing, Rebuilding, ... */
157 __u8 fs_state
; /* fast-sync state for CnG (0xff == disabled) */
158 __u16 verify_errors
; /* number of mismatches */
159 __u16 bad_blocks
; /* number of bad blocks during verify */
161 struct imsm_map map
[1];
162 /* here comes another one if migr_state */
163 } __attribute__ ((packed
));
166 __u8 volume
[MAX_RAID_SERIAL_LEN
];
169 #define DEV_BOOTABLE __cpu_to_le32(0x01)
170 #define DEV_BOOT_DEVICE __cpu_to_le32(0x02)
171 #define DEV_READ_COALESCING __cpu_to_le32(0x04)
172 #define DEV_WRITE_COALESCING __cpu_to_le32(0x08)
173 #define DEV_LAST_SHUTDOWN_DIRTY __cpu_to_le32(0x10)
174 #define DEV_HIDDEN_AT_BOOT __cpu_to_le32(0x20)
175 #define DEV_CURRENTLY_HIDDEN __cpu_to_le32(0x40)
176 #define DEV_VERIFY_AND_FIX __cpu_to_le32(0x80)
177 #define DEV_MAP_STATE_UNINIT __cpu_to_le32(0x100)
178 #define DEV_NO_AUTO_RECOVERY __cpu_to_le32(0x200)
179 #define DEV_CLONE_N_GO __cpu_to_le32(0x400)
180 #define DEV_CLONE_MAN_SYNC __cpu_to_le32(0x800)
181 #define DEV_CNG_MASTER_DISK_NUM __cpu_to_le32(0x1000)
182 __u32 status
; /* Persistent RaidDev status */
183 __u32 reserved_blocks
; /* Reserved blocks at beginning of volume */
187 __u8 cng_master_disk
;
191 #define IMSM_DEV_FILLERS 10
192 __u32 filler
[IMSM_DEV_FILLERS
];
194 } __attribute__ ((packed
));
197 __u8 sig
[MAX_SIGNATURE_LENGTH
]; /* 0x00 - 0x1F */
198 __u32 check_sum
; /* 0x20 - 0x23 MPB Checksum */
199 __u32 mpb_size
; /* 0x24 - 0x27 Size of MPB */
200 __u32 family_num
; /* 0x28 - 0x2B Checksum from first time this config was written */
201 __u32 generation_num
; /* 0x2C - 0x2F Incremented each time this array's MPB is written */
202 __u32 error_log_size
; /* 0x30 - 0x33 in bytes */
203 __u32 attributes
; /* 0x34 - 0x37 */
204 __u8 num_disks
; /* 0x38 Number of configured disks */
205 __u8 num_raid_devs
; /* 0x39 Number of configured volumes */
206 __u8 error_log_pos
; /* 0x3A */
207 __u8 fill
[1]; /* 0x3B */
208 __u32 cache_size
; /* 0x3c - 0x40 in mb */
209 __u32 orig_family_num
; /* 0x40 - 0x43 original family num */
210 __u32 pwr_cycle_count
; /* 0x44 - 0x47 simulated power cycle count for array */
211 __u32 bbm_log_size
; /* 0x48 - 0x4B - size of bad Block Mgmt Log in bytes */
212 #define IMSM_FILLERS 35
213 __u32 filler
[IMSM_FILLERS
]; /* 0x4C - 0xD7 RAID_MPB_FILLERS */
214 struct imsm_disk disk
[1]; /* 0xD8 diskTbl[numDisks] */
215 /* here comes imsm_dev[num_raid_devs] */
216 /* here comes BBM logs */
217 } __attribute__ ((packed
));
219 #define BBM_LOG_MAX_ENTRIES 254
221 struct bbm_log_entry
{
222 __u64 defective_block_start
;
223 #define UNREADABLE 0xFFFFFFFF
224 __u32 spare_block_offset
;
225 __u16 remapped_marked_count
;
227 } __attribute__ ((__packed__
));
230 __u32 signature
; /* 0xABADB10C */
232 __u32 reserved_spare_block_count
; /* 0 */
233 __u32 reserved
; /* 0xFFFF */
234 __u64 first_spare_lba
;
235 struct bbm_log_entry mapped_block_entries
[BBM_LOG_MAX_ENTRIES
];
236 } __attribute__ ((__packed__
));
240 static char *map_state_str
[] = { "normal", "uninitialized", "degraded", "failed" };
243 #define RAID_DISK_RESERVED_BLOCKS_IMSM_HI 2209
245 #define GEN_MIGR_AREA_SIZE 2048 /* General Migration Copy Area size in blocks */
247 #define MIGR_REC_BUF_SIZE 512 /* size of migr_record i/o buffer */
248 #define MIGR_REC_POSITION 512 /* migr_record position offset on disk,
249 * MIGR_REC_BUF_SIZE <= MIGR_REC_POSITION
253 #define UNIT_SRC_NORMAL 0 /* Source data for curr_migr_unit must
254 * be recovered using srcMap */
255 #define UNIT_SRC_IN_CP_AREA 1 /* Source data for curr_migr_unit has
256 * already been migrated and must
257 * be recovered from checkpoint area */
259 __u32 rec_status
; /* Status used to determine how to restart
260 * migration in case it aborts
262 __u32 curr_migr_unit
; /* 0..numMigrUnits-1 */
263 __u32 family_num
; /* Family number of MPB
264 * containing the RaidDev
265 * that is migrating */
266 __u32 ascending_migr
; /* True if migrating in increasing
268 __u32 blocks_per_unit
; /* Num disk blocks per unit of operation */
269 __u32 dest_depth_per_unit
; /* Num member blocks each destMap
271 * advances per unit-of-operation */
272 __u32 ckpt_area_pba
; /* Pba of first block of ckpt copy area */
273 __u32 dest_1st_member_lba
; /* First member lba on first
274 * stripe of destination */
275 __u32 num_migr_units
; /* Total num migration units-of-op */
276 __u32 post_migr_vol_cap
; /* Size of volume after
277 * migration completes */
278 __u32 post_migr_vol_cap_hi
; /* Expansion space for LBA64 */
279 __u32 ckpt_read_disk_num
; /* Which member disk in destSubMap[0] the
280 * migration ckpt record was read from
281 * (for recovered migrations) */
282 } __attribute__ ((__packed__
));
287 * 2: metadata does not match
295 struct md_list
*next
;
298 #define pr_vrb(fmt, arg...) (void) (verbose && pr_err(fmt, ##arg))
300 static __u8
migr_type(struct imsm_dev
*dev
)
302 if (dev
->vol
.migr_type
== MIGR_VERIFY
&&
303 dev
->status
& DEV_VERIFY_AND_FIX
)
306 return dev
->vol
.migr_type
;
309 static void set_migr_type(struct imsm_dev
*dev
, __u8 migr_type
)
311 /* for compatibility with older oroms convert MIGR_REPAIR, into
312 * MIGR_VERIFY w/ DEV_VERIFY_AND_FIX status
314 if (migr_type
== MIGR_REPAIR
) {
315 dev
->vol
.migr_type
= MIGR_VERIFY
;
316 dev
->status
|= DEV_VERIFY_AND_FIX
;
318 dev
->vol
.migr_type
= migr_type
;
319 dev
->status
&= ~DEV_VERIFY_AND_FIX
;
323 static unsigned int sector_count(__u32 bytes
)
325 return ROUND_UP(bytes
, 512) / 512;
328 static unsigned int mpb_sectors(struct imsm_super
*mpb
)
330 return sector_count(__le32_to_cpu(mpb
->mpb_size
));
334 struct imsm_dev
*dev
;
335 struct intel_dev
*next
;
340 enum sys_dev_type type
;
343 struct intel_hba
*next
;
350 /* internal representation of IMSM metadata */
353 void *buf
; /* O_DIRECT buffer for reading/writing metadata */
354 struct imsm_super
*anchor
; /* immovable parameters */
357 void *migr_rec_buf
; /* buffer for I/O operations */
358 struct migr_record
*migr_rec
; /* migration record */
360 int clean_migration_record_by_mdmon
; /* when reshape is switched to next
361 array, it indicates that mdmon is allowed to clean migration
363 size_t len
; /* size of the 'buf' allocation */
364 void *next_buf
; /* for realloc'ing buf from the manager */
366 int updates_pending
; /* count of pending updates for mdmon */
367 int current_vol
; /* index of raid device undergoing creation */
368 unsigned long long create_offset
; /* common start for 'current_vol' */
369 __u32 random
; /* random data for seeding new family numbers */
370 struct intel_dev
*devlist
;
374 __u8 serial
[MAX_RAID_SERIAL_LEN
];
377 struct imsm_disk disk
;
380 struct extent
*e
; /* for determining freespace @ create */
381 int raiddisk
; /* slot to fill in autolayout */
383 } *disks
, *current_disk
;
384 struct dl
*disk_mgmt_list
; /* list of disks to add/remove while mdmon
386 struct dl
*missing
; /* disks removed while we weren't looking */
387 struct bbm_log
*bbm_log
;
388 struct intel_hba
*hba
; /* device path of the raid controller for this metadata */
389 const struct imsm_orom
*orom
; /* platform firmware support */
390 struct intel_super
*next
; /* (temp) list for disambiguating family_num */
394 struct imsm_disk disk
;
395 #define IMSM_UNKNOWN_OWNER (-1)
397 struct intel_disk
*next
;
401 unsigned long long start
, size
;
404 /* definitions of reshape process types */
405 enum imsm_reshape_type
{
411 /* definition of messages passed to imsm_process_update */
412 enum imsm_update_type
{
413 update_activate_spare
,
417 update_add_remove_disk
,
418 update_reshape_container_disks
,
419 update_reshape_migration
,
421 update_general_migration_checkpoint
,
425 struct imsm_update_activate_spare
{
426 enum imsm_update_type type
;
430 struct imsm_update_activate_spare
*next
;
443 enum takeover_direction
{
447 struct imsm_update_takeover
{
448 enum imsm_update_type type
;
450 enum takeover_direction direction
;
453 struct imsm_update_reshape
{
454 enum imsm_update_type type
;
458 int new_disks
[1]; /* new_raid_disks - old_raid_disks makedev number */
461 struct imsm_update_reshape_migration
{
462 enum imsm_update_type type
;
465 /* fields for array migration changes
472 int new_disks
[1]; /* new_raid_disks - old_raid_disks makedev number */
475 struct imsm_update_size_change
{
476 enum imsm_update_type type
;
481 struct imsm_update_general_migration_checkpoint
{
482 enum imsm_update_type type
;
483 __u32 curr_migr_unit
;
487 __u8 serial
[MAX_RAID_SERIAL_LEN
];
490 struct imsm_update_create_array
{
491 enum imsm_update_type type
;
496 struct imsm_update_kill_array
{
497 enum imsm_update_type type
;
501 struct imsm_update_rename_array
{
502 enum imsm_update_type type
;
503 __u8 name
[MAX_RAID_SERIAL_LEN
];
507 struct imsm_update_add_remove_disk
{
508 enum imsm_update_type type
;
512 static const char *_sys_dev_type
[] = {
513 [SYS_DEV_UNKNOWN
] = "Unknown",
514 [SYS_DEV_SAS
] = "SAS",
515 [SYS_DEV_SATA
] = "SATA"
518 const char *get_sys_dev_type(enum sys_dev_type type
)
520 if (type
>= SYS_DEV_MAX
)
521 type
= SYS_DEV_UNKNOWN
;
523 return _sys_dev_type
[type
];
526 static struct intel_hba
* alloc_intel_hba(struct sys_dev
*device
)
528 struct intel_hba
*result
= malloc(sizeof(*result
));
530 result
->type
= device
->type
;
531 result
->path
= strdup(device
->path
);
533 if (result
->path
&& (result
->pci_id
= strrchr(result
->path
, '/')) != NULL
)
539 static struct intel_hba
* find_intel_hba(struct intel_hba
*hba
, struct sys_dev
*device
)
541 struct intel_hba
*result
=NULL
;
542 for (result
= hba
; result
; result
= result
->next
) {
543 if (result
->type
== device
->type
&& strcmp(result
->path
, device
->path
) == 0)
549 static int attach_hba_to_super(struct intel_super
*super
, struct sys_dev
*device
)
551 struct intel_hba
*hba
;
553 /* check if disk attached to Intel HBA */
554 hba
= find_intel_hba(super
->hba
, device
);
557 /* Check if HBA is already attached to super */
558 if (super
->hba
== NULL
) {
559 super
->hba
= alloc_intel_hba(device
);
564 /* Intel metadata allows for all disks attached to the same type HBA.
565 * Do not sypport odf HBA types mixing
567 if (device
->type
!= hba
->type
)
573 hba
->next
= alloc_intel_hba(device
);
577 static struct sys_dev
* find_disk_attached_hba(int fd
, const char *devname
)
579 struct sys_dev
*list
, *elem
, *prev
;
582 if ((list
= find_intel_devices()) == NULL
)
586 disk_path
= (char *) devname
;
588 disk_path
= diskfd_to_devpath(fd
);
595 for (prev
= NULL
, elem
= list
; elem
; prev
= elem
, elem
= elem
->next
) {
596 if (path_attached_to_hba(disk_path
, elem
->path
)) {
600 prev
->next
= elem
->next
;
602 if (disk_path
!= devname
)
608 if (disk_path
!= devname
)
616 static int find_intel_hba_capability(int fd
, struct intel_super
*super
,
619 static struct supertype
*match_metadata_desc_imsm(char *arg
)
621 struct supertype
*st
;
623 if (strcmp(arg
, "imsm") != 0 &&
624 strcmp(arg
, "default") != 0
628 st
= malloc(sizeof(*st
));
631 memset(st
, 0, sizeof(*st
));
632 st
->container_dev
= NoMdDev
;
633 st
->ss
= &super_imsm
;
634 st
->max_devs
= IMSM_MAX_DEVICES
;
635 st
->minor_version
= 0;
641 static __u8
*get_imsm_version(struct imsm_super
*mpb
)
643 return &mpb
->sig
[MPB_SIG_LEN
];
647 /* retrieve a disk directly from the anchor when the anchor is known to be
648 * up-to-date, currently only at load time
650 static struct imsm_disk
*__get_imsm_disk(struct imsm_super
*mpb
, __u8 index
)
652 if (index
>= mpb
->num_disks
)
654 return &mpb
->disk
[index
];
657 /* retrieve the disk description based on a index of the disk
660 static struct dl
*get_imsm_dl_disk(struct intel_super
*super
, __u8 index
)
664 for (d
= super
->disks
; d
; d
= d
->next
)
665 if (d
->index
== index
)
670 /* retrieve a disk from the parsed metadata */
671 static struct imsm_disk
*get_imsm_disk(struct intel_super
*super
, __u8 index
)
675 dl
= get_imsm_dl_disk(super
, index
);
682 /* generate a checksum directly from the anchor when the anchor is known to be
683 * up-to-date, currently only at load or write_super after coalescing
685 static __u32
__gen_imsm_checksum(struct imsm_super
*mpb
)
687 __u32 end
= mpb
->mpb_size
/ sizeof(end
);
688 __u32
*p
= (__u32
*) mpb
;
692 sum
+= __le32_to_cpu(*p
);
696 return sum
- __le32_to_cpu(mpb
->check_sum
);
699 static size_t sizeof_imsm_map(struct imsm_map
*map
)
701 return sizeof(struct imsm_map
) + sizeof(__u32
) * (map
->num_members
- 1);
704 struct imsm_map
*get_imsm_map(struct imsm_dev
*dev
, int second_map
)
706 /* A device can have 2 maps if it is in the middle of a migration.
708 * MAP_0 - we return the first map
709 * MAP_1 - we return the second map if it exists, else NULL
710 * MAP_X - we return the second map if it exists, else the first
712 struct imsm_map
*map
= &dev
->vol
.map
[0];
713 struct imsm_map
*map2
= NULL
;
715 if (dev
->vol
.migr_state
)
716 map2
= (void *)map
+ sizeof_imsm_map(map
);
718 switch (second_map
) {
735 /* return the size of the device.
736 * migr_state increases the returned size if map[0] were to be duplicated
738 static size_t sizeof_imsm_dev(struct imsm_dev
*dev
, int migr_state
)
740 size_t size
= sizeof(*dev
) - sizeof(struct imsm_map
) +
741 sizeof_imsm_map(get_imsm_map(dev
, MAP_0
));
743 /* migrating means an additional map */
744 if (dev
->vol
.migr_state
)
745 size
+= sizeof_imsm_map(get_imsm_map(dev
, MAP_1
));
747 size
+= sizeof_imsm_map(get_imsm_map(dev
, MAP_0
));
753 /* retrieve disk serial number list from a metadata update */
754 static struct disk_info
*get_disk_info(struct imsm_update_create_array
*update
)
757 struct disk_info
*inf
;
759 inf
= u
+ sizeof(*update
) - sizeof(struct imsm_dev
) +
760 sizeof_imsm_dev(&update
->dev
, 0);
766 static struct imsm_dev
*__get_imsm_dev(struct imsm_super
*mpb
, __u8 index
)
772 if (index
>= mpb
->num_raid_devs
)
775 /* devices start after all disks */
776 offset
= ((void *) &mpb
->disk
[mpb
->num_disks
]) - _mpb
;
778 for (i
= 0; i
<= index
; i
++)
780 return _mpb
+ offset
;
782 offset
+= sizeof_imsm_dev(_mpb
+ offset
, 0);
787 static struct imsm_dev
*get_imsm_dev(struct intel_super
*super
, __u8 index
)
789 struct intel_dev
*dv
;
791 if (index
>= super
->anchor
->num_raid_devs
)
793 for (dv
= super
->devlist
; dv
; dv
= dv
->next
)
794 if (dv
->index
== index
)
801 * == MAP_0 get first map
802 * == MAP_1 get second map
803 * == MAP_X than get map according to the current migr_state
805 static __u32
get_imsm_ord_tbl_ent(struct imsm_dev
*dev
,
809 struct imsm_map
*map
;
811 map
= get_imsm_map(dev
, second_map
);
813 /* top byte identifies disk under rebuild */
814 return __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
817 #define ord_to_idx(ord) (((ord) << 8) >> 8)
818 static __u32
get_imsm_disk_idx(struct imsm_dev
*dev
, int slot
, int second_map
)
820 __u32 ord
= get_imsm_ord_tbl_ent(dev
, slot
, second_map
);
822 return ord_to_idx(ord
);
825 static void set_imsm_ord_tbl_ent(struct imsm_map
*map
, int slot
, __u32 ord
)
827 map
->disk_ord_tbl
[slot
] = __cpu_to_le32(ord
);
830 static int get_imsm_disk_slot(struct imsm_map
*map
, unsigned idx
)
835 for (slot
= 0; slot
< map
->num_members
; slot
++) {
836 ord
= __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
837 if (ord_to_idx(ord
) == idx
)
844 static int get_imsm_raid_level(struct imsm_map
*map
)
846 if (map
->raid_level
== 1) {
847 if (map
->num_members
== 2)
853 return map
->raid_level
;
856 static int cmp_extent(const void *av
, const void *bv
)
858 const struct extent
*a
= av
;
859 const struct extent
*b
= bv
;
860 if (a
->start
< b
->start
)
862 if (a
->start
> b
->start
)
867 static int count_memberships(struct dl
*dl
, struct intel_super
*super
)
872 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
873 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
874 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
876 if (get_imsm_disk_slot(map
, dl
->index
) >= 0)
883 static __u32
imsm_min_reserved_sectors(struct intel_super
*super
);
885 static int split_ull(unsigned long long n
, __u32
*lo
, __u32
*hi
)
887 if (lo
== 0 || hi
== 0)
889 *lo
= __le32_to_cpu((unsigned)n
);
890 *hi
= __le32_to_cpu((unsigned)(n
>> 32));
894 static unsigned long long join_u32(__u32 lo
, __u32 hi
)
896 return (unsigned long long)__le32_to_cpu(lo
) |
897 (((unsigned long long)__le32_to_cpu(hi
)) << 32);
900 static unsigned long long total_blocks(struct imsm_disk
*disk
)
904 return join_u32(disk
->total_blocks_lo
, disk
->total_blocks_hi
);
907 static unsigned long long pba_of_lba0(struct imsm_map
*map
)
911 return join_u32(map
->pba_of_lba0_lo
, map
->pba_of_lba0_hi
);
914 static unsigned long long blocks_per_member(struct imsm_map
*map
)
918 return join_u32(map
->blocks_per_member_lo
, map
->blocks_per_member_hi
);
922 static unsigned long long num_data_stripes(struct imsm_map
*map
)
926 return join_u32(map
->num_data_stripes_lo
, map
->num_data_stripes_hi
);
929 static void set_total_blocks(struct imsm_disk
*disk
, unsigned long long n
)
931 split_ull(n
, &disk
->total_blocks_lo
, &disk
->total_blocks_hi
);
935 static void set_pba_of_lba0(struct imsm_map
*map
, unsigned long long n
)
937 split_ull(n
, &map
->pba_of_lba0_lo
, &map
->pba_of_lba0_hi
);
940 static void set_blocks_per_member(struct imsm_map
*map
, unsigned long long n
)
942 split_ull(n
, &map
->blocks_per_member_lo
, &map
->blocks_per_member_hi
);
945 static void set_num_data_stripes(struct imsm_map
*map
, unsigned long long n
)
947 split_ull(n
, &map
->num_data_stripes_lo
, &map
->num_data_stripes_hi
);
950 static struct extent
*get_extents(struct intel_super
*super
, struct dl
*dl
)
952 /* find a list of used extents on the given physical device */
953 struct extent
*rv
, *e
;
955 int memberships
= count_memberships(dl
, super
);
958 /* trim the reserved area for spares, so they can join any array
959 * regardless of whether the OROM has assigned sectors from the
960 * IMSM_RESERVED_SECTORS region
963 reservation
= imsm_min_reserved_sectors(super
);
965 reservation
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
967 rv
= malloc(sizeof(struct extent
) * (memberships
+ 1));
972 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
973 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
974 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
976 if (get_imsm_disk_slot(map
, dl
->index
) >= 0) {
977 e
->start
= pba_of_lba0(map
);
978 e
->size
= blocks_per_member(map
);
982 qsort(rv
, memberships
, sizeof(*rv
), cmp_extent
);
984 /* determine the start of the metadata
985 * when no raid devices are defined use the default
986 * ...otherwise allow the metadata to truncate the value
987 * as is the case with older versions of imsm
990 struct extent
*last
= &rv
[memberships
- 1];
991 unsigned long long remainder
;
993 remainder
= total_blocks(&dl
->disk
) - (last
->start
+ last
->size
);
994 /* round down to 1k block to satisfy precision of the kernel
998 /* make sure remainder is still sane */
999 if (remainder
< (unsigned)ROUND_UP(super
->len
, 512) >> 9)
1000 remainder
= ROUND_UP(super
->len
, 512) >> 9;
1001 if (reservation
> remainder
)
1002 reservation
= remainder
;
1004 e
->start
= total_blocks(&dl
->disk
) - reservation
;
1009 /* try to determine how much space is reserved for metadata from
1010 * the last get_extents() entry, otherwise fallback to the
1013 static __u32
imsm_reserved_sectors(struct intel_super
*super
, struct dl
*dl
)
1019 /* for spares just return a minimal reservation which will grow
1020 * once the spare is picked up by an array
1022 if (dl
->index
== -1)
1023 return MPB_SECTOR_CNT
;
1025 e
= get_extents(super
, dl
);
1027 return MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
1029 /* scroll to last entry */
1030 for (i
= 0; e
[i
].size
; i
++)
1033 rv
= total_blocks(&dl
->disk
) - e
[i
].start
;
1040 static int is_spare(struct imsm_disk
*disk
)
1042 return (disk
->status
& SPARE_DISK
) == SPARE_DISK
;
1045 static int is_configured(struct imsm_disk
*disk
)
1047 return (disk
->status
& CONFIGURED_DISK
) == CONFIGURED_DISK
;
1050 static int is_failed(struct imsm_disk
*disk
)
1052 return (disk
->status
& FAILED_DISK
) == FAILED_DISK
;
1055 /* try to determine how much space is reserved for metadata from
1056 * the last get_extents() entry on the smallest active disk,
1057 * otherwise fallback to the default
1059 static __u32
imsm_min_reserved_sectors(struct intel_super
*super
)
1063 unsigned long long min_active
;
1065 __u32 rv
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
1066 struct dl
*dl
, *dl_min
= NULL
;
1072 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
1075 unsigned long long blocks
= total_blocks(&dl
->disk
);
1076 if (blocks
< min_active
|| min_active
== 0) {
1078 min_active
= blocks
;
1084 /* find last lba used by subarrays on the smallest active disk */
1085 e
= get_extents(super
, dl_min
);
1088 for (i
= 0; e
[i
].size
; i
++)
1091 remainder
= min_active
- e
[i
].start
;
1094 /* to give priority to recovery we should not require full
1095 IMSM_RESERVED_SECTORS from the spare */
1096 rv
= MPB_SECTOR_CNT
+ NUM_BLOCKS_DIRTY_STRIPE_REGION
;
1098 /* if real reservation is smaller use that value */
1099 return (remainder
< rv
) ? remainder
: rv
;
1102 /* Return minimum size of a spare that can be used in this array*/
1103 static unsigned long long min_acceptable_spare_size_imsm(struct supertype
*st
)
1105 struct intel_super
*super
= st
->sb
;
1109 unsigned long long rv
= 0;
1113 /* find first active disk in array */
1115 while (dl
&& (is_failed(&dl
->disk
) || dl
->index
== -1))
1119 /* find last lba used by subarrays */
1120 e
= get_extents(super
, dl
);
1123 for (i
= 0; e
[i
].size
; i
++)
1126 rv
= e
[i
-1].start
+ e
[i
-1].size
;
1129 /* add the amount of space needed for metadata */
1130 rv
= rv
+ imsm_min_reserved_sectors(super
);
1135 static int is_gen_migration(struct imsm_dev
*dev
);
1138 static __u64
blocks_per_migr_unit(struct intel_super
*super
,
1139 struct imsm_dev
*dev
);
1141 static void print_imsm_dev(struct intel_super
*super
,
1142 struct imsm_dev
*dev
,
1148 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
1149 struct imsm_map
*map2
= get_imsm_map(dev
, MAP_1
);
1153 printf("[%.16s]:\n", dev
->volume
);
1154 printf(" UUID : %s\n", uuid
);
1155 printf(" RAID Level : %d", get_imsm_raid_level(map
));
1157 printf(" <-- %d", get_imsm_raid_level(map2
));
1159 printf(" Members : %d", map
->num_members
);
1161 printf(" <-- %d", map2
->num_members
);
1163 printf(" Slots : [");
1164 for (i
= 0; i
< map
->num_members
; i
++) {
1165 ord
= get_imsm_ord_tbl_ent(dev
, i
, MAP_0
);
1166 printf("%s", ord
& IMSM_ORD_REBUILD
? "_" : "U");
1171 for (i
= 0; i
< map2
->num_members
; i
++) {
1172 ord
= get_imsm_ord_tbl_ent(dev
, i
, MAP_1
);
1173 printf("%s", ord
& IMSM_ORD_REBUILD
? "_" : "U");
1178 printf(" Failed disk : ");
1179 if (map
->failed_disk_num
== 0xff)
1182 printf("%i", map
->failed_disk_num
);
1184 slot
= get_imsm_disk_slot(map
, disk_idx
);
1186 ord
= get_imsm_ord_tbl_ent(dev
, slot
, MAP_X
);
1187 printf(" This Slot : %d%s\n", slot
,
1188 ord
& IMSM_ORD_REBUILD
? " (out-of-sync)" : "");
1190 printf(" This Slot : ?\n");
1191 sz
= __le32_to_cpu(dev
->size_high
);
1193 sz
+= __le32_to_cpu(dev
->size_low
);
1194 printf(" Array Size : %llu%s\n", (unsigned long long)sz
,
1195 human_size(sz
* 512));
1196 sz
= blocks_per_member(map
);
1197 printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz
,
1198 human_size(sz
* 512));
1199 printf(" Sector Offset : %llu\n",
1201 printf(" Num Stripes : %llu\n",
1202 num_data_stripes(map
));
1203 printf(" Chunk Size : %u KiB",
1204 __le16_to_cpu(map
->blocks_per_strip
) / 2);
1206 printf(" <-- %u KiB",
1207 __le16_to_cpu(map2
->blocks_per_strip
) / 2);
1209 printf(" Reserved : %d\n", __le32_to_cpu(dev
->reserved_blocks
));
1210 printf(" Migrate State : ");
1211 if (dev
->vol
.migr_state
) {
1212 if (migr_type(dev
) == MIGR_INIT
)
1213 printf("initialize\n");
1214 else if (migr_type(dev
) == MIGR_REBUILD
)
1215 printf("rebuild\n");
1216 else if (migr_type(dev
) == MIGR_VERIFY
)
1218 else if (migr_type(dev
) == MIGR_GEN_MIGR
)
1219 printf("general migration\n");
1220 else if (migr_type(dev
) == MIGR_STATE_CHANGE
)
1221 printf("state change\n");
1222 else if (migr_type(dev
) == MIGR_REPAIR
)
1225 printf("<unknown:%d>\n", migr_type(dev
));
1228 printf(" Map State : %s", map_state_str
[map
->map_state
]);
1229 if (dev
->vol
.migr_state
) {
1230 struct imsm_map
*map
= get_imsm_map(dev
, MAP_1
);
1232 printf(" <-- %s", map_state_str
[map
->map_state
]);
1233 printf("\n Checkpoint : %u ",
1234 __le32_to_cpu(dev
->vol
.curr_migr_unit
));
1235 if ((is_gen_migration(dev
)) && ((slot
> 1) || (slot
< 0)))
1238 printf("(%llu)", (unsigned long long)
1239 blocks_per_migr_unit(super
, dev
));
1242 printf(" Dirty State : %s\n", dev
->vol
.dirty
? "dirty" : "clean");
1245 static void print_imsm_disk(struct imsm_disk
*disk
, int index
, __u32 reserved
)
1247 char str
[MAX_RAID_SERIAL_LEN
+ 1];
1250 if (index
< -1 || !disk
)
1254 snprintf(str
, MAX_RAID_SERIAL_LEN
+ 1, "%s", disk
->serial
);
1256 printf(" Disk%02d Serial : %s\n", index
, str
);
1258 printf(" Disk Serial : %s\n", str
);
1259 printf(" State :%s%s%s\n", is_spare(disk
) ? " spare" : "",
1260 is_configured(disk
) ? " active" : "",
1261 is_failed(disk
) ? " failed" : "");
1262 printf(" Id : %08x\n", __le32_to_cpu(disk
->scsi_id
));
1263 sz
= total_blocks(disk
) - reserved
;
1264 printf(" Usable Size : %llu%s\n", (unsigned long long)sz
,
1265 human_size(sz
* 512));
1268 void examine_migr_rec_imsm(struct intel_super
*super
)
1270 struct migr_record
*migr_rec
= super
->migr_rec
;
1271 struct imsm_super
*mpb
= super
->anchor
;
1274 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
1275 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
1276 struct imsm_map
*map
;
1279 if (is_gen_migration(dev
) == 0)
1282 printf("\nMigration Record Information:");
1284 /* first map under migration */
1285 map
= get_imsm_map(dev
, MAP_0
);
1287 slot
= get_imsm_disk_slot(map
, super
->disks
->index
);
1288 if ((map
== NULL
) || (slot
> 1) || (slot
< 0)) {
1289 printf(" Empty\n ");
1290 printf("Examine one of first two disks in array\n");
1293 printf("\n Status : ");
1294 if (__le32_to_cpu(migr_rec
->rec_status
) == UNIT_SRC_NORMAL
)
1297 printf("Contains Data\n");
1298 printf(" Current Unit : %u\n",
1299 __le32_to_cpu(migr_rec
->curr_migr_unit
));
1300 printf(" Family : %u\n",
1301 __le32_to_cpu(migr_rec
->family_num
));
1302 printf(" Ascending : %u\n",
1303 __le32_to_cpu(migr_rec
->ascending_migr
));
1304 printf(" Blocks Per Unit : %u\n",
1305 __le32_to_cpu(migr_rec
->blocks_per_unit
));
1306 printf(" Dest. Depth Per Unit : %u\n",
1307 __le32_to_cpu(migr_rec
->dest_depth_per_unit
));
1308 printf(" Checkpoint Area pba : %u\n",
1309 __le32_to_cpu(migr_rec
->ckpt_area_pba
));
1310 printf(" First member lba : %u\n",
1311 __le32_to_cpu(migr_rec
->dest_1st_member_lba
));
1312 printf(" Total Number of Units : %u\n",
1313 __le32_to_cpu(migr_rec
->num_migr_units
));
1314 printf(" Size of volume : %u\n",
1315 __le32_to_cpu(migr_rec
->post_migr_vol_cap
));
1316 printf(" Expansion space for LBA64 : %u\n",
1317 __le32_to_cpu(migr_rec
->post_migr_vol_cap_hi
));
1318 printf(" Record was read from : %u\n",
1319 __le32_to_cpu(migr_rec
->ckpt_read_disk_num
));
1324 #endif /* MDASSEMBLE */
1325 /*******************************************************************************
1326 * function: imsm_check_attributes
1327 * Description: Function checks if features represented by attributes flags
1328 * are supported by mdadm.
1330 * attributes - Attributes read from metadata
1332 * 0 - passed attributes contains unsupported features flags
1333 * 1 - all features are supported
1334 ******************************************************************************/
1335 static int imsm_check_attributes(__u32 attributes
)
1338 __u32 not_supported
= MPB_ATTRIB_SUPPORTED
^0xffffffff;
1340 not_supported
&= ~MPB_ATTRIB_IGNORED
;
1342 not_supported
&= attributes
;
1343 if (not_supported
) {
1344 pr_err("(IMSM): Unsupported attributes : %x\n",
1345 (unsigned)__le32_to_cpu(not_supported
));
1346 if (not_supported
& MPB_ATTRIB_CHECKSUM_VERIFY
) {
1347 dprintf("\t\tMPB_ATTRIB_CHECKSUM_VERIFY \n");
1348 not_supported
^= MPB_ATTRIB_CHECKSUM_VERIFY
;
1350 if (not_supported
& MPB_ATTRIB_2TB
) {
1351 dprintf("\t\tMPB_ATTRIB_2TB\n");
1352 not_supported
^= MPB_ATTRIB_2TB
;
1354 if (not_supported
& MPB_ATTRIB_RAID0
) {
1355 dprintf("\t\tMPB_ATTRIB_RAID0\n");
1356 not_supported
^= MPB_ATTRIB_RAID0
;
1358 if (not_supported
& MPB_ATTRIB_RAID1
) {
1359 dprintf("\t\tMPB_ATTRIB_RAID1\n");
1360 not_supported
^= MPB_ATTRIB_RAID1
;
1362 if (not_supported
& MPB_ATTRIB_RAID10
) {
1363 dprintf("\t\tMPB_ATTRIB_RAID10\n");
1364 not_supported
^= MPB_ATTRIB_RAID10
;
1366 if (not_supported
& MPB_ATTRIB_RAID1E
) {
1367 dprintf("\t\tMPB_ATTRIB_RAID1E\n");
1368 not_supported
^= MPB_ATTRIB_RAID1E
;
1370 if (not_supported
& MPB_ATTRIB_RAID5
) {
1371 dprintf("\t\tMPB_ATTRIB_RAID5\n");
1372 not_supported
^= MPB_ATTRIB_RAID5
;
1374 if (not_supported
& MPB_ATTRIB_RAIDCNG
) {
1375 dprintf("\t\tMPB_ATTRIB_RAIDCNG\n");
1376 not_supported
^= MPB_ATTRIB_RAIDCNG
;
1378 if (not_supported
& MPB_ATTRIB_BBM
) {
1379 dprintf("\t\tMPB_ATTRIB_BBM\n");
1380 not_supported
^= MPB_ATTRIB_BBM
;
1382 if (not_supported
& MPB_ATTRIB_CHECKSUM_VERIFY
) {
1383 dprintf("\t\tMPB_ATTRIB_CHECKSUM_VERIFY (== MPB_ATTRIB_LEGACY)\n");
1384 not_supported
^= MPB_ATTRIB_CHECKSUM_VERIFY
;
1386 if (not_supported
& MPB_ATTRIB_EXP_STRIPE_SIZE
) {
1387 dprintf("\t\tMPB_ATTRIB_EXP_STRIP_SIZE\n");
1388 not_supported
^= MPB_ATTRIB_EXP_STRIPE_SIZE
;
1390 if (not_supported
& MPB_ATTRIB_2TB_DISK
) {
1391 dprintf("\t\tMPB_ATTRIB_2TB_DISK\n");
1392 not_supported
^= MPB_ATTRIB_2TB_DISK
;
1394 if (not_supported
& MPB_ATTRIB_NEVER_USE2
) {
1395 dprintf("\t\tMPB_ATTRIB_NEVER_USE2\n");
1396 not_supported
^= MPB_ATTRIB_NEVER_USE2
;
1398 if (not_supported
& MPB_ATTRIB_NEVER_USE
) {
1399 dprintf("\t\tMPB_ATTRIB_NEVER_USE\n");
1400 not_supported
^= MPB_ATTRIB_NEVER_USE
;
1404 dprintf(Name
"(IMSM): Unknown attributes : %x\n", not_supported
);
1413 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
, char *map
);
1415 static void examine_super_imsm(struct supertype
*st
, char *homehost
)
1417 struct intel_super
*super
= st
->sb
;
1418 struct imsm_super
*mpb
= super
->anchor
;
1419 char str
[MAX_SIGNATURE_LENGTH
];
1424 __u32 reserved
= imsm_reserved_sectors(super
, super
->disks
);
1427 snprintf(str
, MPB_SIG_LEN
, "%s", mpb
->sig
);
1428 printf(" Magic : %s\n", str
);
1429 snprintf(str
, strlen(MPB_VERSION_RAID0
), "%s", get_imsm_version(mpb
));
1430 printf(" Version : %s\n", get_imsm_version(mpb
));
1431 printf(" Orig Family : %08x\n", __le32_to_cpu(mpb
->orig_family_num
));
1432 printf(" Family : %08x\n", __le32_to_cpu(mpb
->family_num
));
1433 printf(" Generation : %08x\n", __le32_to_cpu(mpb
->generation_num
));
1434 printf(" Attributes : ");
1435 if (imsm_check_attributes(mpb
->attributes
))
1436 printf("All supported\n");
1438 printf("not supported\n");
1439 getinfo_super_imsm(st
, &info
, NULL
);
1440 fname_from_uuid(st
, &info
, nbuf
, ':');
1441 printf(" UUID : %s\n", nbuf
+ 5);
1442 sum
= __le32_to_cpu(mpb
->check_sum
);
1443 printf(" Checksum : %08x %s\n", sum
,
1444 __gen_imsm_checksum(mpb
) == sum
? "correct" : "incorrect");
1445 printf(" MPB Sectors : %d\n", mpb_sectors(mpb
));
1446 printf(" Disks : %d\n", mpb
->num_disks
);
1447 printf(" RAID Devices : %d\n", mpb
->num_raid_devs
);
1448 print_imsm_disk(__get_imsm_disk(mpb
, super
->disks
->index
), super
->disks
->index
, reserved
);
1449 if (super
->bbm_log
) {
1450 struct bbm_log
*log
= super
->bbm_log
;
1453 printf("Bad Block Management Log:\n");
1454 printf(" Log Size : %d\n", __le32_to_cpu(mpb
->bbm_log_size
));
1455 printf(" Signature : %x\n", __le32_to_cpu(log
->signature
));
1456 printf(" Entry Count : %d\n", __le32_to_cpu(log
->entry_count
));
1457 printf(" Spare Blocks : %d\n", __le32_to_cpu(log
->reserved_spare_block_count
));
1458 printf(" First Spare : %llx\n",
1459 (unsigned long long) __le64_to_cpu(log
->first_spare_lba
));
1461 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
1463 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
1465 super
->current_vol
= i
;
1466 getinfo_super_imsm(st
, &info
, NULL
);
1467 fname_from_uuid(st
, &info
, nbuf
, ':');
1468 print_imsm_dev(super
, dev
, nbuf
+ 5, super
->disks
->index
);
1470 for (i
= 0; i
< mpb
->num_disks
; i
++) {
1471 if (i
== super
->disks
->index
)
1473 print_imsm_disk(__get_imsm_disk(mpb
, i
), i
, reserved
);
1476 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
1477 if (dl
->index
== -1)
1478 print_imsm_disk(&dl
->disk
, -1, reserved
);
1480 examine_migr_rec_imsm(super
);
1483 static void brief_examine_super_imsm(struct supertype
*st
, int verbose
)
1485 /* We just write a generic IMSM ARRAY entry */
1488 struct intel_super
*super
= st
->sb
;
1490 if (!super
->anchor
->num_raid_devs
) {
1491 printf("ARRAY metadata=imsm\n");
1495 getinfo_super_imsm(st
, &info
, NULL
);
1496 fname_from_uuid(st
, &info
, nbuf
, ':');
1497 printf("ARRAY metadata=imsm UUID=%s\n", nbuf
+ 5);
1500 static void brief_examine_subarrays_imsm(struct supertype
*st
, int verbose
)
1502 /* We just write a generic IMSM ARRAY entry */
1506 struct intel_super
*super
= st
->sb
;
1509 if (!super
->anchor
->num_raid_devs
)
1512 getinfo_super_imsm(st
, &info
, NULL
);
1513 fname_from_uuid(st
, &info
, nbuf
, ':');
1514 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
1515 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
1517 super
->current_vol
= i
;
1518 getinfo_super_imsm(st
, &info
, NULL
);
1519 fname_from_uuid(st
, &info
, nbuf1
, ':');
1520 printf("ARRAY /dev/md/%.16s container=%s member=%d UUID=%s\n",
1521 dev
->volume
, nbuf
+ 5, i
, nbuf1
+ 5);
1525 static void export_examine_super_imsm(struct supertype
*st
)
1527 struct intel_super
*super
= st
->sb
;
1528 struct imsm_super
*mpb
= super
->anchor
;
1532 getinfo_super_imsm(st
, &info
, NULL
);
1533 fname_from_uuid(st
, &info
, nbuf
, ':');
1534 printf("MD_METADATA=imsm\n");
1535 printf("MD_LEVEL=container\n");
1536 printf("MD_UUID=%s\n", nbuf
+5);
1537 printf("MD_DEVICES=%u\n", mpb
->num_disks
);
1540 static void detail_super_imsm(struct supertype
*st
, char *homehost
)
1545 getinfo_super_imsm(st
, &info
, NULL
);
1546 fname_from_uuid(st
, &info
, nbuf
, ':');
1547 printf("\n UUID : %s\n", nbuf
+ 5);
1550 static void brief_detail_super_imsm(struct supertype
*st
)
1554 getinfo_super_imsm(st
, &info
, NULL
);
1555 fname_from_uuid(st
, &info
, nbuf
, ':');
1556 printf(" UUID=%s", nbuf
+ 5);
1559 static int imsm_read_serial(int fd
, char *devname
, __u8
*serial
);
1560 static void fd2devname(int fd
, char *name
);
1562 static int ahci_enumerate_ports(const char *hba_path
, int port_count
, int host_base
, int verbose
)
1564 /* dump an unsorted list of devices attached to AHCI Intel storage
1565 * controller, as well as non-connected ports
1567 int hba_len
= strlen(hba_path
) + 1;
1572 unsigned long port_mask
= (1 << port_count
) - 1;
1574 if (port_count
> (int)sizeof(port_mask
) * 8) {
1576 pr_err("port_count %d out of range\n", port_count
);
1580 /* scroll through /sys/dev/block looking for devices attached to
1583 dir
= opendir("/sys/dev/block");
1584 for (ent
= dir
? readdir(dir
) : NULL
; ent
; ent
= readdir(dir
)) {
1595 if (sscanf(ent
->d_name
, "%d:%d", &major
, &minor
) != 2)
1597 path
= devt_to_devpath(makedev(major
, minor
));
1600 if (!path_attached_to_hba(path
, hba_path
)) {
1606 /* retrieve the scsi device type */
1607 if (asprintf(&device
, "/sys/dev/block/%d:%d/device/xxxxxxx", major
, minor
) < 0) {
1609 pr_err("failed to allocate 'device'\n");
1613 sprintf(device
, "/sys/dev/block/%d:%d/device/type", major
, minor
);
1614 if (load_sys(device
, buf
) != 0) {
1616 pr_err("failed to read device type for %s\n",
1622 type
= strtoul(buf
, NULL
, 10);
1624 /* if it's not a disk print the vendor and model */
1625 if (!(type
== 0 || type
== 7 || type
== 14)) {
1628 sprintf(device
, "/sys/dev/block/%d:%d/device/vendor", major
, minor
);
1629 if (load_sys(device
, buf
) == 0) {
1630 strncpy(vendor
, buf
, sizeof(vendor
));
1631 vendor
[sizeof(vendor
) - 1] = '\0';
1632 c
= (char *) &vendor
[sizeof(vendor
) - 1];
1633 while (isspace(*c
) || *c
== '\0')
1637 sprintf(device
, "/sys/dev/block/%d:%d/device/model", major
, minor
);
1638 if (load_sys(device
, buf
) == 0) {
1639 strncpy(model
, buf
, sizeof(model
));
1640 model
[sizeof(model
) - 1] = '\0';
1641 c
= (char *) &model
[sizeof(model
) - 1];
1642 while (isspace(*c
) || *c
== '\0')
1646 if (vendor
[0] && model
[0])
1647 sprintf(buf
, "%.64s %.64s", vendor
, model
);
1649 switch (type
) { /* numbers from hald/linux/device.c */
1650 case 1: sprintf(buf
, "tape"); break;
1651 case 2: sprintf(buf
, "printer"); break;
1652 case 3: sprintf(buf
, "processor"); break;
1654 case 5: sprintf(buf
, "cdrom"); break;
1655 case 6: sprintf(buf
, "scanner"); break;
1656 case 8: sprintf(buf
, "media_changer"); break;
1657 case 9: sprintf(buf
, "comm"); break;
1658 case 12: sprintf(buf
, "raid"); break;
1659 default: sprintf(buf
, "unknown");
1665 /* chop device path to 'host%d' and calculate the port number */
1666 c
= strchr(&path
[hba_len
], '/');
1669 pr_err("%s - invalid path name\n", path
+ hba_len
);
1674 if (sscanf(&path
[hba_len
], "host%d", &port
) == 1)
1678 *c
= '/'; /* repair the full string */
1679 pr_err("failed to determine port number for %s\n",
1686 /* mark this port as used */
1687 port_mask
&= ~(1 << port
);
1689 /* print out the device information */
1691 printf(" Port%d : - non-disk device (%s) -\n", port
, buf
);
1695 fd
= dev_open(ent
->d_name
, O_RDONLY
);
1697 printf(" Port%d : - disk info unavailable -\n", port
);
1699 fd2devname(fd
, buf
);
1700 printf(" Port%d : %s", port
, buf
);
1701 if (imsm_read_serial(fd
, NULL
, (__u8
*) buf
) == 0)
1702 printf(" (%.*s)\n", MAX_RAID_SERIAL_LEN
, buf
);
1717 for (i
= 0; i
< port_count
; i
++)
1718 if (port_mask
& (1 << i
))
1719 printf(" Port%d : - no device attached -\n", i
);
1725 static void print_found_intel_controllers(struct sys_dev
*elem
)
1727 for (; elem
; elem
= elem
->next
) {
1728 pr_err("found Intel(R) ");
1729 if (elem
->type
== SYS_DEV_SATA
)
1730 fprintf(stderr
, "SATA ");
1731 else if (elem
->type
== SYS_DEV_SAS
)
1732 fprintf(stderr
, "SAS ");
1733 fprintf(stderr
, "RAID controller");
1735 fprintf(stderr
, " at %s", elem
->pci_id
);
1736 fprintf(stderr
, ".\n");
1741 static int ahci_get_port_count(const char *hba_path
, int *port_count
)
1748 if ((dir
= opendir(hba_path
)) == NULL
)
1751 for (ent
= readdir(dir
); ent
; ent
= readdir(dir
)) {
1754 if (sscanf(ent
->d_name
, "host%d", &host
) != 1)
1756 if (*port_count
== 0)
1758 else if (host
< host_base
)
1761 if (host
+ 1 > *port_count
+ host_base
)
1762 *port_count
= host
+ 1 - host_base
;
1768 static void print_imsm_capability(const struct imsm_orom
*orom
)
1770 printf(" Platform : Intel(R) Matrix Storage Manager\n");
1771 printf(" Version : %d.%d.%d.%d\n", orom
->major_ver
, orom
->minor_ver
,
1772 orom
->hotfix_ver
, orom
->build
);
1773 printf(" RAID Levels :%s%s%s%s%s\n",
1774 imsm_orom_has_raid0(orom
) ? " raid0" : "",
1775 imsm_orom_has_raid1(orom
) ? " raid1" : "",
1776 imsm_orom_has_raid1e(orom
) ? " raid1e" : "",
1777 imsm_orom_has_raid10(orom
) ? " raid10" : "",
1778 imsm_orom_has_raid5(orom
) ? " raid5" : "");
1779 printf(" Chunk Sizes :%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
1780 imsm_orom_has_chunk(orom
, 2) ? " 2k" : "",
1781 imsm_orom_has_chunk(orom
, 4) ? " 4k" : "",
1782 imsm_orom_has_chunk(orom
, 8) ? " 8k" : "",
1783 imsm_orom_has_chunk(orom
, 16) ? " 16k" : "",
1784 imsm_orom_has_chunk(orom
, 32) ? " 32k" : "",
1785 imsm_orom_has_chunk(orom
, 64) ? " 64k" : "",
1786 imsm_orom_has_chunk(orom
, 128) ? " 128k" : "",
1787 imsm_orom_has_chunk(orom
, 256) ? " 256k" : "",
1788 imsm_orom_has_chunk(orom
, 512) ? " 512k" : "",
1789 imsm_orom_has_chunk(orom
, 1024*1) ? " 1M" : "",
1790 imsm_orom_has_chunk(orom
, 1024*2) ? " 2M" : "",
1791 imsm_orom_has_chunk(orom
, 1024*4) ? " 4M" : "",
1792 imsm_orom_has_chunk(orom
, 1024*8) ? " 8M" : "",
1793 imsm_orom_has_chunk(orom
, 1024*16) ? " 16M" : "",
1794 imsm_orom_has_chunk(orom
, 1024*32) ? " 32M" : "",
1795 imsm_orom_has_chunk(orom
, 1024*64) ? " 64M" : "");
1796 printf(" 2TB volumes :%s supported\n",
1797 (orom
->attr
& IMSM_OROM_ATTR_2TB
)?"":" not");
1798 printf(" 2TB disks :%s supported\n",
1799 (orom
->attr
& IMSM_OROM_ATTR_2TB_DISK
)?"":" not");
1800 printf(" Max Disks : %d\n", orom
->tds
);
1801 printf(" Max Volumes : %d per array, %d per controller\n",
1802 orom
->vpa
, orom
->vphba
);
1806 static int detail_platform_imsm(int verbose
, int enumerate_only
)
1808 /* There are two components to imsm platform support, the ahci SATA
1809 * controller and the option-rom. To find the SATA controller we
1810 * simply look in /sys/bus/pci/drivers/ahci to see if an ahci
1811 * controller with the Intel vendor id is present. This approach
1812 * allows mdadm to leverage the kernel's ahci detection logic, with the
1813 * caveat that if ahci.ko is not loaded mdadm will not be able to
1814 * detect platform raid capabilities. The option-rom resides in a
1815 * platform "Adapter ROM". We scan for its signature to retrieve the
1816 * platform capabilities. If raid support is disabled in the BIOS the
1817 * option-rom capability structure will not be available.
1819 const struct imsm_orom
*orom
;
1820 struct sys_dev
*list
, *hba
;
1825 if (enumerate_only
) {
1826 if (check_env("IMSM_NO_PLATFORM"))
1828 list
= find_intel_devices();
1831 for (hba
= list
; hba
; hba
= hba
->next
) {
1832 orom
= find_imsm_capability(hba
->type
);
1838 free_sys_dev(&list
);
1842 list
= find_intel_devices();
1845 pr_err("no active Intel(R) RAID "
1846 "controller found.\n");
1847 free_sys_dev(&list
);
1850 print_found_intel_controllers(list
);
1852 for (hba
= list
; hba
; hba
= hba
->next
) {
1853 orom
= find_imsm_capability(hba
->type
);
1855 pr_err("imsm capabilities not found for controller: %s (type %s)\n",
1856 hba
->path
, get_sys_dev_type(hba
->type
));
1858 print_imsm_capability(orom
);
1861 for (hba
= list
; hba
; hba
= hba
->next
) {
1862 printf(" I/O Controller : %s (%s)\n",
1863 hba
->path
, get_sys_dev_type(hba
->type
));
1865 if (hba
->type
== SYS_DEV_SATA
) {
1866 host_base
= ahci_get_port_count(hba
->path
, &port_count
);
1867 if (ahci_enumerate_ports(hba
->path
, port_count
, host_base
, verbose
)) {
1869 pr_err("failed to enumerate "
1870 "ports on SATA controller at %s.", hba
->pci_id
);
1876 free_sys_dev(&list
);
1881 static int match_home_imsm(struct supertype
*st
, char *homehost
)
1883 /* the imsm metadata format does not specify any host
1884 * identification information. We return -1 since we can never
1885 * confirm nor deny whether a given array is "meant" for this
1886 * host. We rely on compare_super and the 'family_num' fields to
1887 * exclude member disks that do not belong, and we rely on
1888 * mdadm.conf to specify the arrays that should be assembled.
1889 * Auto-assembly may still pick up "foreign" arrays.
1895 static void uuid_from_super_imsm(struct supertype
*st
, int uuid
[4])
1897 /* The uuid returned here is used for:
1898 * uuid to put into bitmap file (Create, Grow)
1899 * uuid for backup header when saving critical section (Grow)
1900 * comparing uuids when re-adding a device into an array
1901 * In these cases the uuid required is that of the data-array,
1902 * not the device-set.
1903 * uuid to recognise same set when adding a missing device back
1904 * to an array. This is a uuid for the device-set.
1906 * For each of these we can make do with a truncated
1907 * or hashed uuid rather than the original, as long as
1909 * In each case the uuid required is that of the data-array,
1910 * not the device-set.
1912 /* imsm does not track uuid's so we synthesis one using sha1 on
1913 * - The signature (Which is constant for all imsm array, but no matter)
1914 * - the orig_family_num of the container
1915 * - the index number of the volume
1916 * - the 'serial' number of the volume.
1917 * Hopefully these are all constant.
1919 struct intel_super
*super
= st
->sb
;
1922 struct sha1_ctx ctx
;
1923 struct imsm_dev
*dev
= NULL
;
1926 /* some mdadm versions failed to set ->orig_family_num, in which
1927 * case fall back to ->family_num. orig_family_num will be
1928 * fixed up with the first metadata update.
1930 family_num
= super
->anchor
->orig_family_num
;
1931 if (family_num
== 0)
1932 family_num
= super
->anchor
->family_num
;
1933 sha1_init_ctx(&ctx
);
1934 sha1_process_bytes(super
->anchor
->sig
, MPB_SIG_LEN
, &ctx
);
1935 sha1_process_bytes(&family_num
, sizeof(__u32
), &ctx
);
1936 if (super
->current_vol
>= 0)
1937 dev
= get_imsm_dev(super
, super
->current_vol
);
1939 __u32 vol
= super
->current_vol
;
1940 sha1_process_bytes(&vol
, sizeof(vol
), &ctx
);
1941 sha1_process_bytes(dev
->volume
, MAX_RAID_SERIAL_LEN
, &ctx
);
1943 sha1_finish_ctx(&ctx
, buf
);
1944 memcpy(uuid
, buf
, 4*4);
1949 get_imsm_numerical_version(struct imsm_super
*mpb
, int *m
, int *p
)
1951 __u8
*v
= get_imsm_version(mpb
);
1952 __u8
*end
= mpb
->sig
+ MAX_SIGNATURE_LENGTH
;
1953 char major
[] = { 0, 0, 0 };
1954 char minor
[] = { 0 ,0, 0 };
1955 char patch
[] = { 0, 0, 0 };
1956 char *ver_parse
[] = { major
, minor
, patch
};
1960 while (*v
!= '\0' && v
< end
) {
1961 if (*v
!= '.' && j
< 2)
1962 ver_parse
[i
][j
++] = *v
;
1970 *m
= strtol(minor
, NULL
, 0);
1971 *p
= strtol(patch
, NULL
, 0);
1975 static __u32
migr_strip_blocks_resync(struct imsm_dev
*dev
)
1977 /* migr_strip_size when repairing or initializing parity */
1978 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
1979 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
1981 switch (get_imsm_raid_level(map
)) {
1986 return 128*1024 >> 9;
1990 static __u32
migr_strip_blocks_rebuild(struct imsm_dev
*dev
)
1992 /* migr_strip_size when rebuilding a degraded disk, no idea why
1993 * this is different than migr_strip_size_resync(), but it's good
1996 struct imsm_map
*map
= get_imsm_map(dev
, MAP_1
);
1997 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
1999 switch (get_imsm_raid_level(map
)) {
2002 if (map
->num_members
% map
->num_domains
== 0)
2003 return 128*1024 >> 9;
2007 return max((__u32
) 64*1024 >> 9, chunk
);
2009 return 128*1024 >> 9;
2013 static __u32
num_stripes_per_unit_resync(struct imsm_dev
*dev
)
2015 struct imsm_map
*lo
= get_imsm_map(dev
, MAP_0
);
2016 struct imsm_map
*hi
= get_imsm_map(dev
, MAP_1
);
2017 __u32 lo_chunk
= __le32_to_cpu(lo
->blocks_per_strip
);
2018 __u32 hi_chunk
= __le32_to_cpu(hi
->blocks_per_strip
);
2020 return max((__u32
) 1, hi_chunk
/ lo_chunk
);
2023 static __u32
num_stripes_per_unit_rebuild(struct imsm_dev
*dev
)
2025 struct imsm_map
*lo
= get_imsm_map(dev
, MAP_0
);
2026 int level
= get_imsm_raid_level(lo
);
2028 if (level
== 1 || level
== 10) {
2029 struct imsm_map
*hi
= get_imsm_map(dev
, MAP_1
);
2031 return hi
->num_domains
;
2033 return num_stripes_per_unit_resync(dev
);
2036 static __u8
imsm_num_data_members(struct imsm_dev
*dev
, int second_map
)
2038 /* named 'imsm_' because raid0, raid1 and raid10
2039 * counter-intuitively have the same number of data disks
2041 struct imsm_map
*map
= get_imsm_map(dev
, second_map
);
2043 switch (get_imsm_raid_level(map
)) {
2045 return map
->num_members
;
2049 return map
->num_members
/2;
2051 return map
->num_members
- 1;
2053 dprintf("%s: unsupported raid level\n", __func__
);
2058 static __u32
parity_segment_depth(struct imsm_dev
*dev
)
2060 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
2061 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
2063 switch(get_imsm_raid_level(map
)) {
2066 return chunk
* map
->num_domains
;
2068 return chunk
* map
->num_members
;
2074 static __u32
map_migr_block(struct imsm_dev
*dev
, __u32 block
)
2076 struct imsm_map
*map
= get_imsm_map(dev
, MAP_1
);
2077 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
2078 __u32 strip
= block
/ chunk
;
2080 switch (get_imsm_raid_level(map
)) {
2083 __u32 vol_strip
= (strip
* map
->num_domains
) + 1;
2084 __u32 vol_stripe
= vol_strip
/ map
->num_members
;
2086 return vol_stripe
* chunk
+ block
% chunk
;
2088 __u32 stripe
= strip
/ (map
->num_members
- 1);
2090 return stripe
* chunk
+ block
% chunk
;
2097 static __u64
blocks_per_migr_unit(struct intel_super
*super
,
2098 struct imsm_dev
*dev
)
2100 /* calculate the conversion factor between per member 'blocks'
2101 * (md/{resync,rebuild}_start) and imsm migration units, return
2102 * 0 for the 'not migrating' and 'unsupported migration' cases
2104 if (!dev
->vol
.migr_state
)
2107 switch (migr_type(dev
)) {
2108 case MIGR_GEN_MIGR
: {
2109 struct migr_record
*migr_rec
= super
->migr_rec
;
2110 return __le32_to_cpu(migr_rec
->blocks_per_unit
);
2115 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
2116 __u32 stripes_per_unit
;
2117 __u32 blocks_per_unit
;
2126 /* yes, this is really the translation of migr_units to
2127 * per-member blocks in the 'resync' case
2129 stripes_per_unit
= num_stripes_per_unit_resync(dev
);
2130 migr_chunk
= migr_strip_blocks_resync(dev
);
2131 disks
= imsm_num_data_members(dev
, MAP_0
);
2132 blocks_per_unit
= stripes_per_unit
* migr_chunk
* disks
;
2133 stripe
= __le16_to_cpu(map
->blocks_per_strip
) * disks
;
2134 segment
= blocks_per_unit
/ stripe
;
2135 block_rel
= blocks_per_unit
- segment
* stripe
;
2136 parity_depth
= parity_segment_depth(dev
);
2137 block_map
= map_migr_block(dev
, block_rel
);
2138 return block_map
+ parity_depth
* segment
;
2140 case MIGR_REBUILD
: {
2141 __u32 stripes_per_unit
;
2144 stripes_per_unit
= num_stripes_per_unit_rebuild(dev
);
2145 migr_chunk
= migr_strip_blocks_rebuild(dev
);
2146 return migr_chunk
* stripes_per_unit
;
2148 case MIGR_STATE_CHANGE
:
2154 static int imsm_level_to_layout(int level
)
2162 return ALGORITHM_LEFT_ASYMMETRIC
;
2169 /*******************************************************************************
2170 * Function: read_imsm_migr_rec
2171 * Description: Function reads imsm migration record from last sector of disk
2173 * fd : disk descriptor
2174 * super : metadata info
2178 ******************************************************************************/
2179 static int read_imsm_migr_rec(int fd
, struct intel_super
*super
)
2182 unsigned long long dsize
;
2184 get_dev_size(fd
, NULL
, &dsize
);
2185 if (lseek64(fd
, dsize
- MIGR_REC_POSITION
, SEEK_SET
) < 0) {
2186 pr_err("Cannot seek to anchor block: %s\n",
2190 if (read(fd
, super
->migr_rec_buf
, MIGR_REC_BUF_SIZE
) !=
2191 MIGR_REC_BUF_SIZE
) {
2192 pr_err("Cannot read migr record block: %s\n",
2202 static struct imsm_dev
*imsm_get_device_during_migration(
2203 struct intel_super
*super
)
2206 struct intel_dev
*dv
;
2208 for (dv
= super
->devlist
; dv
; dv
= dv
->next
) {
2209 if (is_gen_migration(dv
->dev
))
2215 /*******************************************************************************
2216 * Function: load_imsm_migr_rec
2217 * Description: Function reads imsm migration record (it is stored at the last
2220 * super : imsm internal array info
2221 * info : general array info
2225 * -2 : no migration in progress
2226 ******************************************************************************/
2227 static int load_imsm_migr_rec(struct intel_super
*super
, struct mdinfo
*info
)
2230 struct dl
*dl
= NULL
;
2234 struct imsm_dev
*dev
;
2235 struct imsm_map
*map
= NULL
;
2238 /* find map under migration */
2239 dev
= imsm_get_device_during_migration(super
);
2240 /* nothing to load,no migration in progress?
2244 map
= get_imsm_map(dev
, MAP_0
);
2247 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
2248 /* skip spare and failed disks
2250 if (sd
->disk
.raid_disk
< 0)
2252 /* read only from one of the first two slots */
2254 slot
= get_imsm_disk_slot(map
,
2255 sd
->disk
.raid_disk
);
2256 if ((map
== NULL
) || (slot
> 1) || (slot
< 0))
2259 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
2260 fd
= dev_open(nm
, O_RDONLY
);
2266 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
2267 /* skip spare and failed disks
2271 /* read only from one of the first two slots */
2273 slot
= get_imsm_disk_slot(map
, dl
->index
);
2274 if ((map
== NULL
) || (slot
> 1) || (slot
< 0))
2276 sprintf(nm
, "%d:%d", dl
->major
, dl
->minor
);
2277 fd
= dev_open(nm
, O_RDONLY
);
2284 retval
= read_imsm_migr_rec(fd
, super
);
2293 /*******************************************************************************
2294 * function: imsm_create_metadata_checkpoint_update
2295 * Description: It creates update for checkpoint change.
2297 * super : imsm internal array info
2298 * u : pointer to prepared update
2301 * If length is equal to 0, input pointer u contains no update
2302 ******************************************************************************/
2303 static int imsm_create_metadata_checkpoint_update(
2304 struct intel_super
*super
,
2305 struct imsm_update_general_migration_checkpoint
**u
)
2308 int update_memory_size
= 0;
2310 dprintf("imsm_create_metadata_checkpoint_update(enter)\n");
2316 /* size of all update data without anchor */
2317 update_memory_size
=
2318 sizeof(struct imsm_update_general_migration_checkpoint
);
2320 *u
= calloc(1, update_memory_size
);
2322 dprintf("error: cannot get memory for "
2323 "imsm_create_metadata_checkpoint_update update\n");
2326 (*u
)->type
= update_general_migration_checkpoint
;
2327 (*u
)->curr_migr_unit
= __le32_to_cpu(super
->migr_rec
->curr_migr_unit
);
2328 dprintf("imsm_create_metadata_checkpoint_update: prepared for %u\n",
2329 (*u
)->curr_migr_unit
);
2331 return update_memory_size
;
2335 static void imsm_update_metadata_locally(struct supertype
*st
,
2336 void *buf
, int len
);
2338 /*******************************************************************************
2339 * Function: write_imsm_migr_rec
2340 * Description: Function writes imsm migration record
2341 * (at the last sector of disk)
2343 * super : imsm internal array info
2347 ******************************************************************************/
2348 static int write_imsm_migr_rec(struct supertype
*st
)
2350 struct intel_super
*super
= st
->sb
;
2351 unsigned long long dsize
;
2357 struct imsm_update_general_migration_checkpoint
*u
;
2358 struct imsm_dev
*dev
;
2359 struct imsm_map
*map
= NULL
;
2361 /* find map under migration */
2362 dev
= imsm_get_device_during_migration(super
);
2363 /* if no migration, write buffer anyway to clear migr_record
2364 * on disk based on first available device
2367 dev
= get_imsm_dev(super
, super
->current_vol
< 0 ? 0 :
2368 super
->current_vol
);
2370 map
= get_imsm_map(dev
, MAP_0
);
2372 for (sd
= super
->disks
; sd
; sd
= sd
->next
) {
2375 /* skip failed and spare devices */
2378 /* write to 2 first slots only */
2380 slot
= get_imsm_disk_slot(map
, sd
->index
);
2381 if ((map
== NULL
) || (slot
> 1) || (slot
< 0))
2384 sprintf(nm
, "%d:%d", sd
->major
, sd
->minor
);
2385 fd
= dev_open(nm
, O_RDWR
);
2388 get_dev_size(fd
, NULL
, &dsize
);
2389 if (lseek64(fd
, dsize
- MIGR_REC_POSITION
, SEEK_SET
) < 0) {
2390 pr_err("Cannot seek to anchor block: %s\n",
2394 if (write(fd
, super
->migr_rec_buf
, MIGR_REC_BUF_SIZE
) !=
2395 MIGR_REC_BUF_SIZE
) {
2396 pr_err("Cannot write migr record block: %s\n",
2403 /* update checkpoint information in metadata */
2404 len
= imsm_create_metadata_checkpoint_update(super
, &u
);
2407 dprintf("imsm: Cannot prepare update\n");
2410 /* update metadata locally */
2411 imsm_update_metadata_locally(st
, u
, len
);
2412 /* and possibly remotely */
2413 if (st
->update_tail
) {
2414 append_metadata_update(st
, u
, len
);
2415 /* during reshape we do all work inside metadata handler
2416 * manage_reshape(), so metadata update has to be triggered
2419 flush_metadata_updates(st
);
2420 st
->update_tail
= &st
->updates
;
2430 #endif /* MDASSEMBLE */
2432 /* spare/missing disks activations are not allowe when
2433 * array/container performs reshape operation, because
2434 * all arrays in container works on the same disks set
2436 int imsm_reshape_blocks_arrays_changes(struct intel_super
*super
)
2439 struct intel_dev
*i_dev
;
2440 struct imsm_dev
*dev
;
2442 /* check whole container
2444 for (i_dev
= super
->devlist
; i_dev
; i_dev
= i_dev
->next
) {
2446 if (is_gen_migration(dev
)) {
2447 /* No repair during any migration in container
2455 static unsigned long long imsm_component_size_aligment_check(int level
,
2457 unsigned long long component_size
)
2459 unsigned int component_size_alligment
;
2461 /* check component size aligment
2463 component_size_alligment
= component_size
% (chunk_size
/512);
2465 dprintf("imsm_component_size_aligment_check(Level: %i, "
2466 "chunk_size = %i, component_size = %llu), "
2467 "component_size_alligment = %u\n",
2468 level
, chunk_size
, component_size
,
2469 component_size_alligment
);
2471 if (component_size_alligment
&& (level
!= 1) && (level
!= UnSet
)) {
2472 dprintf("imsm: reported component size alligned from %llu ",
2474 component_size
-= component_size_alligment
;
2475 dprintf("to %llu (%i).\n",
2476 component_size
, component_size_alligment
);
2479 return component_size
;
2482 static void getinfo_super_imsm_volume(struct supertype
*st
, struct mdinfo
*info
, char *dmap
)
2484 struct intel_super
*super
= st
->sb
;
2485 struct migr_record
*migr_rec
= super
->migr_rec
;
2486 struct imsm_dev
*dev
= get_imsm_dev(super
, super
->current_vol
);
2487 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
2488 struct imsm_map
*prev_map
= get_imsm_map(dev
, MAP_1
);
2489 struct imsm_map
*map_to_analyse
= map
;
2492 int map_disks
= info
->array
.raid_disks
;
2494 memset(info
, 0, sizeof(*info
));
2496 map_to_analyse
= prev_map
;
2498 dl
= super
->current_disk
;
2500 info
->container_member
= super
->current_vol
;
2501 info
->array
.raid_disks
= map
->num_members
;
2502 info
->array
.level
= get_imsm_raid_level(map_to_analyse
);
2503 info
->array
.layout
= imsm_level_to_layout(info
->array
.level
);
2504 info
->array
.md_minor
= -1;
2505 info
->array
.ctime
= 0;
2506 info
->array
.utime
= 0;
2507 info
->array
.chunk_size
=
2508 __le16_to_cpu(map_to_analyse
->blocks_per_strip
) << 9;
2509 info
->array
.state
= !dev
->vol
.dirty
;
2510 info
->custom_array_size
= __le32_to_cpu(dev
->size_high
);
2511 info
->custom_array_size
<<= 32;
2512 info
->custom_array_size
|= __le32_to_cpu(dev
->size_low
);
2513 info
->recovery_blocked
= imsm_reshape_blocks_arrays_changes(st
->sb
);
2515 if (is_gen_migration(dev
)) {
2516 info
->reshape_active
= 1;
2517 info
->new_level
= get_imsm_raid_level(map
);
2518 info
->new_layout
= imsm_level_to_layout(info
->new_level
);
2519 info
->new_chunk
= __le16_to_cpu(map
->blocks_per_strip
) << 9;
2520 info
->delta_disks
= map
->num_members
- prev_map
->num_members
;
2521 if (info
->delta_disks
) {
2522 /* this needs to be applied to every array
2525 info
->reshape_active
= CONTAINER_RESHAPE
;
2527 /* We shape information that we give to md might have to be
2528 * modify to cope with md's requirement for reshaping arrays.
2529 * For example, when reshaping a RAID0, md requires it to be
2530 * presented as a degraded RAID4.
2531 * Also if a RAID0 is migrating to a RAID5 we need to specify
2532 * the array as already being RAID5, but the 'before' layout
2533 * is a RAID4-like layout.
2535 switch (info
->array
.level
) {
2537 switch(info
->new_level
) {
2539 /* conversion is happening as RAID4 */
2540 info
->array
.level
= 4;
2541 info
->array
.raid_disks
+= 1;
2544 /* conversion is happening as RAID5 */
2545 info
->array
.level
= 5;
2546 info
->array
.layout
= ALGORITHM_PARITY_N
;
2547 info
->delta_disks
-= 1;
2550 /* FIXME error message */
2551 info
->array
.level
= UnSet
;
2557 info
->new_level
= UnSet
;
2558 info
->new_layout
= UnSet
;
2559 info
->new_chunk
= info
->array
.chunk_size
;
2560 info
->delta_disks
= 0;
2564 info
->disk
.major
= dl
->major
;
2565 info
->disk
.minor
= dl
->minor
;
2566 info
->disk
.number
= dl
->index
;
2567 info
->disk
.raid_disk
= get_imsm_disk_slot(map_to_analyse
,
2571 info
->data_offset
= pba_of_lba0(map_to_analyse
);
2572 info
->component_size
= blocks_per_member(map_to_analyse
);
2574 info
->component_size
= imsm_component_size_aligment_check(
2576 info
->array
.chunk_size
,
2577 info
->component_size
);
2579 memset(info
->uuid
, 0, sizeof(info
->uuid
));
2580 info
->recovery_start
= MaxSector
;
2582 info
->reshape_progress
= 0;
2583 info
->resync_start
= MaxSector
;
2584 if ((map_to_analyse
->map_state
== IMSM_T_STATE_UNINITIALIZED
||
2586 imsm_reshape_blocks_arrays_changes(super
) == 0) {
2587 info
->resync_start
= 0;
2589 if (dev
->vol
.migr_state
) {
2590 switch (migr_type(dev
)) {
2593 __u64 blocks_per_unit
= blocks_per_migr_unit(super
,
2595 __u64 units
= __le32_to_cpu(dev
->vol
.curr_migr_unit
);
2597 info
->resync_start
= blocks_per_unit
* units
;
2600 case MIGR_GEN_MIGR
: {
2601 __u64 blocks_per_unit
= blocks_per_migr_unit(super
,
2603 __u64 units
= __le32_to_cpu(migr_rec
->curr_migr_unit
);
2604 unsigned long long array_blocks
;
2607 if (__le32_to_cpu(migr_rec
->ascending_migr
) &&
2609 (__le32_to_cpu(migr_rec
->num_migr_units
)-1)) &&
2610 (super
->migr_rec
->rec_status
==
2611 __cpu_to_le32(UNIT_SRC_IN_CP_AREA
)))
2614 info
->reshape_progress
= blocks_per_unit
* units
;
2616 dprintf("IMSM: General Migration checkpoint : %llu "
2617 "(%llu) -> read reshape progress : %llu\n",
2618 (unsigned long long)units
,
2619 (unsigned long long)blocks_per_unit
,
2620 info
->reshape_progress
);
2622 used_disks
= imsm_num_data_members(dev
, MAP_1
);
2623 if (used_disks
> 0) {
2624 array_blocks
= blocks_per_member(map
) *
2626 /* round array size down to closest MB
2628 info
->custom_array_size
= (array_blocks
2629 >> SECT_PER_MB_SHIFT
)
2630 << SECT_PER_MB_SHIFT
;
2634 /* we could emulate the checkpointing of
2635 * 'sync_action=check' migrations, but for now
2636 * we just immediately complete them
2639 /* this is handled by container_content_imsm() */
2640 case MIGR_STATE_CHANGE
:
2641 /* FIXME handle other migrations */
2643 /* we are not dirty, so... */
2644 info
->resync_start
= MaxSector
;
2648 strncpy(info
->name
, (char *) dev
->volume
, MAX_RAID_SERIAL_LEN
);
2649 info
->name
[MAX_RAID_SERIAL_LEN
] = 0;
2651 info
->array
.major_version
= -1;
2652 info
->array
.minor_version
= -2;
2653 devname
= devnum2devname(st
->container_dev
);
2654 *info
->text_version
= '\0';
2656 sprintf(info
->text_version
, "/%s/%d", devname
, info
->container_member
);
2658 info
->safe_mode_delay
= 4000; /* 4 secs like the Matrix driver */
2659 uuid_from_super_imsm(st
, info
->uuid
);
2663 for (i
=0; i
<map_disks
; i
++) {
2665 if (i
< info
->array
.raid_disks
) {
2666 struct imsm_disk
*dsk
;
2667 j
= get_imsm_disk_idx(dev
, i
, MAP_X
);
2668 dsk
= get_imsm_disk(super
, j
);
2669 if (dsk
&& (dsk
->status
& CONFIGURED_DISK
))
2676 static __u8
imsm_check_degraded(struct intel_super
*super
, struct imsm_dev
*dev
,
2677 int failed
, int look_in_map
);
2679 static int imsm_count_failed(struct intel_super
*super
, struct imsm_dev
*dev
,
2684 static void manage_second_map(struct intel_super
*super
, struct imsm_dev
*dev
)
2686 if (is_gen_migration(dev
)) {
2689 struct imsm_map
*map2
= get_imsm_map(dev
, MAP_1
);
2691 failed
= imsm_count_failed(super
, dev
, MAP_1
);
2692 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_1
);
2693 if (map2
->map_state
!= map_state
) {
2694 map2
->map_state
= map_state
;
2695 super
->updates_pending
++;
2701 static struct imsm_disk
*get_imsm_missing(struct intel_super
*super
, __u8 index
)
2705 for (d
= super
->missing
; d
; d
= d
->next
)
2706 if (d
->index
== index
)
2711 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
, char *map
)
2713 struct intel_super
*super
= st
->sb
;
2714 struct imsm_disk
*disk
;
2715 int map_disks
= info
->array
.raid_disks
;
2716 int max_enough
= -1;
2718 struct imsm_super
*mpb
;
2720 if (super
->current_vol
>= 0) {
2721 getinfo_super_imsm_volume(st
, info
, map
);
2724 memset(info
, 0, sizeof(*info
));
2726 /* Set raid_disks to zero so that Assemble will always pull in valid
2729 info
->array
.raid_disks
= 0;
2730 info
->array
.level
= LEVEL_CONTAINER
;
2731 info
->array
.layout
= 0;
2732 info
->array
.md_minor
= -1;
2733 info
->array
.ctime
= 0; /* N/A for imsm */
2734 info
->array
.utime
= 0;
2735 info
->array
.chunk_size
= 0;
2737 info
->disk
.major
= 0;
2738 info
->disk
.minor
= 0;
2739 info
->disk
.raid_disk
= -1;
2740 info
->reshape_active
= 0;
2741 info
->array
.major_version
= -1;
2742 info
->array
.minor_version
= -2;
2743 strcpy(info
->text_version
, "imsm");
2744 info
->safe_mode_delay
= 0;
2745 info
->disk
.number
= -1;
2746 info
->disk
.state
= 0;
2748 info
->recovery_start
= MaxSector
;
2749 info
->recovery_blocked
= imsm_reshape_blocks_arrays_changes(st
->sb
);
2751 /* do we have the all the insync disks that we expect? */
2752 mpb
= super
->anchor
;
2754 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
2755 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
2756 int failed
, enough
, j
, missing
= 0;
2757 struct imsm_map
*map
;
2760 failed
= imsm_count_failed(super
, dev
, MAP_0
);
2761 state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
2762 map
= get_imsm_map(dev
, MAP_0
);
2764 /* any newly missing disks?
2765 * (catches single-degraded vs double-degraded)
2767 for (j
= 0; j
< map
->num_members
; j
++) {
2768 __u32 ord
= get_imsm_ord_tbl_ent(dev
, j
, MAP_0
);
2769 __u32 idx
= ord_to_idx(ord
);
2771 if (!(ord
& IMSM_ORD_REBUILD
) &&
2772 get_imsm_missing(super
, idx
)) {
2778 if (state
== IMSM_T_STATE_FAILED
)
2780 else if (state
== IMSM_T_STATE_DEGRADED
&&
2781 (state
!= map
->map_state
|| missing
))
2783 else /* we're normal, or already degraded */
2785 if (is_gen_migration(dev
) && missing
) {
2786 /* during general migration we need all disks
2787 * that process is running on.
2788 * No new missing disk is allowed.
2792 /* no more checks necessary
2796 /* in the missing/failed disk case check to see
2797 * if at least one array is runnable
2799 max_enough
= max(max_enough
, enough
);
2801 dprintf("%s: enough: %d\n", __func__
, max_enough
);
2802 info
->container_enough
= max_enough
;
2805 __u32 reserved
= imsm_reserved_sectors(super
, super
->disks
);
2807 disk
= &super
->disks
->disk
;
2808 info
->data_offset
= total_blocks(&super
->disks
->disk
) - reserved
;
2809 info
->component_size
= reserved
;
2810 info
->disk
.state
= is_configured(disk
) ? (1 << MD_DISK_ACTIVE
) : 0;
2811 /* we don't change info->disk.raid_disk here because
2812 * this state will be finalized in mdmon after we have
2813 * found the 'most fresh' version of the metadata
2815 info
->disk
.state
|= is_failed(disk
) ? (1 << MD_DISK_FAULTY
) : 0;
2816 info
->disk
.state
|= is_spare(disk
) ? 0 : (1 << MD_DISK_SYNC
);
2819 /* only call uuid_from_super_imsm when this disk is part of a populated container,
2820 * ->compare_super may have updated the 'num_raid_devs' field for spares
2822 if (info
->disk
.state
& (1 << MD_DISK_SYNC
) || super
->anchor
->num_raid_devs
)
2823 uuid_from_super_imsm(st
, info
->uuid
);
2825 memcpy(info
->uuid
, uuid_zero
, sizeof(uuid_zero
));
2827 /* I don't know how to compute 'map' on imsm, so use safe default */
2830 for (i
= 0; i
< map_disks
; i
++)
2836 /* allocates memory and fills disk in mdinfo structure
2837 * for each disk in array */
2838 struct mdinfo
*getinfo_super_disks_imsm(struct supertype
*st
)
2840 struct mdinfo
*mddev
= NULL
;
2841 struct intel_super
*super
= st
->sb
;
2842 struct imsm_disk
*disk
;
2845 if (!super
|| !super
->disks
)
2848 mddev
= malloc(sizeof(*mddev
));
2850 pr_err("Failed to allocate memory.\n");
2853 memset(mddev
, 0, sizeof(*mddev
));
2857 tmp
= malloc(sizeof(*tmp
));
2859 pr_err("Failed to allocate memory.\n");
2864 memset(tmp
, 0, sizeof(*tmp
));
2866 tmp
->next
= mddev
->devs
;
2868 tmp
->disk
.number
= count
++;
2869 tmp
->disk
.major
= dl
->major
;
2870 tmp
->disk
.minor
= dl
->minor
;
2871 tmp
->disk
.state
= is_configured(disk
) ?
2872 (1 << MD_DISK_ACTIVE
) : 0;
2873 tmp
->disk
.state
|= is_failed(disk
) ? (1 << MD_DISK_FAULTY
) : 0;
2874 tmp
->disk
.state
|= is_spare(disk
) ? 0 : (1 << MD_DISK_SYNC
);
2875 tmp
->disk
.raid_disk
= -1;
2881 static int update_super_imsm(struct supertype
*st
, struct mdinfo
*info
,
2882 char *update
, char *devname
, int verbose
,
2883 int uuid_set
, char *homehost
)
2885 /* For 'assemble' and 'force' we need to return non-zero if any
2886 * change was made. For others, the return value is ignored.
2887 * Update options are:
2888 * force-one : This device looks a bit old but needs to be included,
2889 * update age info appropriately.
2890 * assemble: clear any 'faulty' flag to allow this device to
2892 * force-array: Array is degraded but being forced, mark it clean
2893 * if that will be needed to assemble it.
2895 * newdev: not used ????
2896 * grow: Array has gained a new device - this is currently for
2898 * resync: mark as dirty so a resync will happen.
2899 * name: update the name - preserving the homehost
2900 * uuid: Change the uuid of the array to match watch is given
2902 * Following are not relevant for this imsm:
2903 * sparc2.2 : update from old dodgey metadata
2904 * super-minor: change the preferred_minor number
2905 * summaries: update redundant counters.
2906 * homehost: update the recorded homehost
2907 * _reshape_progress: record new reshape_progress position.
2910 struct intel_super
*super
= st
->sb
;
2911 struct imsm_super
*mpb
;
2913 /* we can only update container info */
2914 if (!super
|| super
->current_vol
>= 0 || !super
->anchor
)
2917 mpb
= super
->anchor
;
2919 if (strcmp(update
, "uuid") == 0) {
2920 /* We take this to mean that the family_num should be updated.
2921 * However that is much smaller than the uuid so we cannot really
2922 * allow an explicit uuid to be given. And it is hard to reliably
2924 * So if !uuid_set we know the current uuid is random and just used
2925 * the first 'int' and copy it to the other 3 positions.
2926 * Otherwise we require the 4 'int's to be the same as would be the
2927 * case if we are using a random uuid. So an explicit uuid will be
2928 * accepted as long as all for ints are the same... which shouldn't hurt
2931 info
->uuid
[1] = info
->uuid
[2] = info
->uuid
[3] = info
->uuid
[0];
2934 if (info
->uuid
[0] != info
->uuid
[1] ||
2935 info
->uuid
[1] != info
->uuid
[2] ||
2936 info
->uuid
[2] != info
->uuid
[3])
2942 mpb
->orig_family_num
= info
->uuid
[0];
2943 } else if (strcmp(update
, "assemble") == 0)
2948 /* successful update? recompute checksum */
2950 mpb
->check_sum
= __le32_to_cpu(__gen_imsm_checksum(mpb
));
2955 static size_t disks_to_mpb_size(int disks
)
2959 size
= sizeof(struct imsm_super
);
2960 size
+= (disks
- 1) * sizeof(struct imsm_disk
);
2961 size
+= 2 * sizeof(struct imsm_dev
);
2962 /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */
2963 size
+= (4 - 2) * sizeof(struct imsm_map
);
2964 /* 4 possible disk_ord_tbl's */
2965 size
+= 4 * (disks
- 1) * sizeof(__u32
);
2970 static __u64
avail_size_imsm(struct supertype
*st
, __u64 devsize
)
2972 if (devsize
< (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
))
2975 return devsize
- (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
);
2978 static void free_devlist(struct intel_super
*super
)
2980 struct intel_dev
*dv
;
2982 while (super
->devlist
) {
2983 dv
= super
->devlist
->next
;
2984 free(super
->devlist
->dev
);
2985 free(super
->devlist
);
2986 super
->devlist
= dv
;
2990 static void imsm_copy_dev(struct imsm_dev
*dest
, struct imsm_dev
*src
)
2992 memcpy(dest
, src
, sizeof_imsm_dev(src
, 0));
2995 static int compare_super_imsm(struct supertype
*st
, struct supertype
*tst
)
2999 * 0 same, or first was empty, and second was copied
3000 * 1 second had wrong number
3002 * 3 wrong other info
3004 struct intel_super
*first
= st
->sb
;
3005 struct intel_super
*sec
= tst
->sb
;
3012 /* in platform dependent environment test if the disks
3013 * use the same Intel hba
3015 if (!check_env("IMSM_NO_PLATFORM")) {
3016 if (!first
->hba
|| !sec
->hba
||
3017 (first
->hba
->type
!= sec
->hba
->type
)) {
3019 "HBAs of devices does not match %s != %s\n",
3020 first
->hba
? get_sys_dev_type(first
->hba
->type
) : NULL
,
3021 sec
->hba
? get_sys_dev_type(sec
->hba
->type
) : NULL
);
3026 /* if an anchor does not have num_raid_devs set then it is a free
3029 if (first
->anchor
->num_raid_devs
> 0 &&
3030 sec
->anchor
->num_raid_devs
> 0) {
3031 /* Determine if these disks might ever have been
3032 * related. Further disambiguation can only take place
3033 * in load_super_imsm_all
3035 __u32 first_family
= first
->anchor
->orig_family_num
;
3036 __u32 sec_family
= sec
->anchor
->orig_family_num
;
3038 if (memcmp(first
->anchor
->sig
, sec
->anchor
->sig
,
3039 MAX_SIGNATURE_LENGTH
) != 0)
3042 if (first_family
== 0)
3043 first_family
= first
->anchor
->family_num
;
3044 if (sec_family
== 0)
3045 sec_family
= sec
->anchor
->family_num
;
3047 if (first_family
!= sec_family
)
3053 /* if 'first' is a spare promote it to a populated mpb with sec's
3056 if (first
->anchor
->num_raid_devs
== 0 &&
3057 sec
->anchor
->num_raid_devs
> 0) {
3059 struct intel_dev
*dv
;
3060 struct imsm_dev
*dev
;
3062 /* we need to copy raid device info from sec if an allocation
3063 * fails here we don't associate the spare
3065 for (i
= 0; i
< sec
->anchor
->num_raid_devs
; i
++) {
3066 dv
= malloc(sizeof(*dv
));
3069 dev
= malloc(sizeof_imsm_dev(get_imsm_dev(sec
, i
), 1));
3076 dv
->next
= first
->devlist
;
3077 first
->devlist
= dv
;
3079 if (i
< sec
->anchor
->num_raid_devs
) {
3080 /* allocation failure */
3081 free_devlist(first
);
3082 fprintf(stderr
, "imsm: failed to associate spare\n");
3085 first
->anchor
->num_raid_devs
= sec
->anchor
->num_raid_devs
;
3086 first
->anchor
->orig_family_num
= sec
->anchor
->orig_family_num
;
3087 first
->anchor
->family_num
= sec
->anchor
->family_num
;
3088 memcpy(first
->anchor
->sig
, sec
->anchor
->sig
, MAX_SIGNATURE_LENGTH
);
3089 for (i
= 0; i
< sec
->anchor
->num_raid_devs
; i
++)
3090 imsm_copy_dev(get_imsm_dev(first
, i
), get_imsm_dev(sec
, i
));
3096 static void fd2devname(int fd
, char *name
)
3100 char dname
[PATH_MAX
];
3105 if (fstat(fd
, &st
) != 0)
3107 sprintf(path
, "/sys/dev/block/%d:%d",
3108 major(st
.st_rdev
), minor(st
.st_rdev
));
3110 rv
= readlink(path
, dname
, sizeof(dname
)-1);
3115 nm
= strrchr(dname
, '/');
3118 snprintf(name
, MAX_RAID_SERIAL_LEN
, "/dev/%s", nm
);
3122 extern int scsi_get_serial(int fd
, void *buf
, size_t buf_len
);
3124 static int imsm_read_serial(int fd
, char *devname
,
3125 __u8 serial
[MAX_RAID_SERIAL_LEN
])
3127 unsigned char scsi_serial
[255];
3136 memset(scsi_serial
, 0, sizeof(scsi_serial
));
3138 rv
= scsi_get_serial(fd
, scsi_serial
, sizeof(scsi_serial
));
3140 if (rv
&& check_env("IMSM_DEVNAME_AS_SERIAL")) {
3141 memset(serial
, 0, MAX_RAID_SERIAL_LEN
);
3142 fd2devname(fd
, (char *) serial
);
3148 pr_err("Failed to retrieve serial for %s\n",
3153 rsp_len
= scsi_serial
[3];
3156 pr_err("Failed to retrieve serial for %s\n",
3160 rsp_buf
= (char *) &scsi_serial
[4];
3162 /* trim all whitespace and non-printable characters and convert
3165 for (i
= 0, dest
= rsp_buf
; i
< rsp_len
; i
++) {
3168 /* ':' is reserved for use in placeholder serial
3169 * numbers for missing disks
3177 len
= dest
- rsp_buf
;
3180 /* truncate leading characters */
3181 if (len
> MAX_RAID_SERIAL_LEN
) {
3182 dest
+= len
- MAX_RAID_SERIAL_LEN
;
3183 len
= MAX_RAID_SERIAL_LEN
;
3186 memset(serial
, 0, MAX_RAID_SERIAL_LEN
);
3187 memcpy(serial
, dest
, len
);
3192 static int serialcmp(__u8
*s1
, __u8
*s2
)
3194 return strncmp((char *) s1
, (char *) s2
, MAX_RAID_SERIAL_LEN
);
3197 static void serialcpy(__u8
*dest
, __u8
*src
)
3199 strncpy((char *) dest
, (char *) src
, MAX_RAID_SERIAL_LEN
);
3202 static struct dl
*serial_to_dl(__u8
*serial
, struct intel_super
*super
)
3206 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
3207 if (serialcmp(dl
->serial
, serial
) == 0)
3213 static struct imsm_disk
*
3214 __serial_to_disk(__u8
*serial
, struct imsm_super
*mpb
, int *idx
)
3218 for (i
= 0; i
< mpb
->num_disks
; i
++) {
3219 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, i
);
3221 if (serialcmp(disk
->serial
, serial
) == 0) {
3232 load_imsm_disk(int fd
, struct intel_super
*super
, char *devname
, int keep_fd
)
3234 struct imsm_disk
*disk
;
3239 __u8 serial
[MAX_RAID_SERIAL_LEN
];
3241 rv
= imsm_read_serial(fd
, devname
, serial
);
3246 dl
= calloc(1, sizeof(*dl
));
3249 pr_err("failed to allocate disk buffer for %s\n",
3255 dl
->major
= major(stb
.st_rdev
);
3256 dl
->minor
= minor(stb
.st_rdev
);
3257 dl
->next
= super
->disks
;
3258 dl
->fd
= keep_fd
? fd
: -1;
3259 assert(super
->disks
== NULL
);
3261 serialcpy(dl
->serial
, serial
);
3264 fd2devname(fd
, name
);
3266 dl
->devname
= strdup(devname
);
3268 dl
->devname
= strdup(name
);
3270 /* look up this disk's index in the current anchor */
3271 disk
= __serial_to_disk(dl
->serial
, super
->anchor
, &dl
->index
);
3274 /* only set index on disks that are a member of a
3275 * populated contianer, i.e. one with raid_devs
3277 if (is_failed(&dl
->disk
))
3279 else if (is_spare(&dl
->disk
))
3287 /* When migrating map0 contains the 'destination' state while map1
3288 * contains the current state. When not migrating map0 contains the
3289 * current state. This routine assumes that map[0].map_state is set to
3290 * the current array state before being called.
3292 * Migration is indicated by one of the following states
3293 * 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed)
3294 * 2/ Initialize (migr_state=1 migr_type=MIGR_INIT map0state=normal
3295 * map1state=unitialized)
3296 * 3/ Repair (Resync) (migr_state=1 migr_type=MIGR_REPAIR map0state=normal
3298 * 4/ Rebuild (migr_state=1 migr_type=MIGR_REBUILD map0state=normal
3299 * map1state=degraded)
3300 * 5/ Migration (mig_state=1 migr_type=MIGR_GEN_MIGR map0state=normal
3303 static void migrate(struct imsm_dev
*dev
, struct intel_super
*super
,
3304 __u8 to_state
, int migr_type
)
3306 struct imsm_map
*dest
;
3307 struct imsm_map
*src
= get_imsm_map(dev
, MAP_0
);
3309 dev
->vol
.migr_state
= 1;
3310 set_migr_type(dev
, migr_type
);
3311 dev
->vol
.curr_migr_unit
= 0;
3312 dest
= get_imsm_map(dev
, MAP_1
);
3314 /* duplicate and then set the target end state in map[0] */
3315 memcpy(dest
, src
, sizeof_imsm_map(src
));
3316 if ((migr_type
== MIGR_REBUILD
) ||
3317 (migr_type
== MIGR_GEN_MIGR
)) {
3321 for (i
= 0; i
< src
->num_members
; i
++) {
3322 ord
= __le32_to_cpu(src
->disk_ord_tbl
[i
]);
3323 set_imsm_ord_tbl_ent(src
, i
, ord_to_idx(ord
));
3327 if (migr_type
== MIGR_GEN_MIGR
)
3328 /* Clear migration record */
3329 memset(super
->migr_rec
, 0, sizeof(struct migr_record
));
3331 src
->map_state
= to_state
;
3334 static void end_migration(struct imsm_dev
*dev
, struct intel_super
*super
,
3337 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
3338 struct imsm_map
*prev
= get_imsm_map(dev
, dev
->vol
.migr_state
== 0 ?
3342 /* merge any IMSM_ORD_REBUILD bits that were not successfully
3343 * completed in the last migration.
3345 * FIXME add support for raid-level-migration
3347 if ((map_state
!= map
->map_state
) && (is_gen_migration(dev
) == 0) &&
3348 (prev
->map_state
!= IMSM_T_STATE_UNINITIALIZED
)) {
3349 /* when final map state is other than expected
3350 * merge maps (not for migration)
3354 for (i
= 0; i
< prev
->num_members
; i
++)
3355 for (j
= 0; j
< map
->num_members
; j
++)
3356 /* during online capacity expansion
3357 * disks position can be changed
3358 * if takeover is used
3360 if (ord_to_idx(map
->disk_ord_tbl
[j
]) ==
3361 ord_to_idx(prev
->disk_ord_tbl
[i
])) {
3362 map
->disk_ord_tbl
[j
] |=
3363 prev
->disk_ord_tbl
[i
];
3366 failed
= imsm_count_failed(super
, dev
, MAP_0
);
3367 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
3370 dev
->vol
.migr_state
= 0;
3371 set_migr_type(dev
, 0);
3372 dev
->vol
.curr_migr_unit
= 0;
3373 map
->map_state
= map_state
;
3377 static int parse_raid_devices(struct intel_super
*super
)
3380 struct imsm_dev
*dev_new
;
3381 size_t len
, len_migr
;
3383 size_t space_needed
= 0;
3384 struct imsm_super
*mpb
= super
->anchor
;
3386 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
3387 struct imsm_dev
*dev_iter
= __get_imsm_dev(super
->anchor
, i
);
3388 struct intel_dev
*dv
;
3390 len
= sizeof_imsm_dev(dev_iter
, 0);
3391 len_migr
= sizeof_imsm_dev(dev_iter
, 1);
3393 space_needed
+= len_migr
- len
;
3395 dv
= malloc(sizeof(*dv
));
3398 if (max_len
< len_migr
)
3400 if (max_len
> len_migr
)
3401 space_needed
+= max_len
- len_migr
;
3402 dev_new
= malloc(max_len
);
3407 imsm_copy_dev(dev_new
, dev_iter
);
3410 dv
->next
= super
->devlist
;
3411 super
->devlist
= dv
;
3414 /* ensure that super->buf is large enough when all raid devices
3417 if (__le32_to_cpu(mpb
->mpb_size
) + space_needed
> super
->len
) {
3420 len
= ROUND_UP(__le32_to_cpu(mpb
->mpb_size
) + space_needed
, 512);
3421 if (posix_memalign(&buf
, 512, len
) != 0)
3424 memcpy(buf
, super
->buf
, super
->len
);
3425 memset(buf
+ super
->len
, 0, len
- super
->len
);
3434 /* retrieve a pointer to the bbm log which starts after all raid devices */
3435 struct bbm_log
*__get_imsm_bbm_log(struct imsm_super
*mpb
)
3439 if (__le32_to_cpu(mpb
->bbm_log_size
)) {
3441 ptr
+= mpb
->mpb_size
- __le32_to_cpu(mpb
->bbm_log_size
);
3447 /*******************************************************************************
3448 * Function: check_mpb_migr_compatibility
3449 * Description: Function checks for unsupported migration features:
3450 * - migration optimization area (pba_of_lba0)
3451 * - descending reshape (ascending_migr)
3453 * super : imsm metadata information
3455 * 0 : migration is compatible
3456 * -1 : migration is not compatible
3457 ******************************************************************************/
3458 int check_mpb_migr_compatibility(struct intel_super
*super
)
3460 struct imsm_map
*map0
, *map1
;
3461 struct migr_record
*migr_rec
= super
->migr_rec
;
3464 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
3465 struct imsm_dev
*dev_iter
= __get_imsm_dev(super
->anchor
, i
);
3468 dev_iter
->vol
.migr_state
== 1 &&
3469 dev_iter
->vol
.migr_type
== MIGR_GEN_MIGR
) {
3470 /* This device is migrating */
3471 map0
= get_imsm_map(dev_iter
, MAP_0
);
3472 map1
= get_imsm_map(dev_iter
, MAP_1
);
3473 if (pba_of_lba0(map0
) != pba_of_lba0(map1
))
3474 /* migration optimization area was used */
3476 if (migr_rec
->ascending_migr
== 0
3477 && migr_rec
->dest_depth_per_unit
> 0)
3478 /* descending reshape not supported yet */
3485 static void __free_imsm(struct intel_super
*super
, int free_disks
);
3487 /* load_imsm_mpb - read matrix metadata
3488 * allocates super->mpb to be freed by free_imsm
3490 static int load_imsm_mpb(int fd
, struct intel_super
*super
, char *devname
)
3492 unsigned long long dsize
;
3493 unsigned long long sectors
;
3495 struct imsm_super
*anchor
;
3498 get_dev_size(fd
, NULL
, &dsize
);
3501 pr_err("%s: device to small for imsm\n",
3506 if (lseek64(fd
, dsize
- (512 * 2), SEEK_SET
) < 0) {
3508 pr_err("Cannot seek to anchor block on %s: %s\n",
3509 devname
, strerror(errno
));
3513 if (posix_memalign((void**)&anchor
, 512, 512) != 0) {
3515 pr_err("Failed to allocate imsm anchor buffer"
3516 " on %s\n", devname
);
3519 if (read(fd
, anchor
, 512) != 512) {
3521 pr_err("Cannot read anchor block on %s: %s\n",
3522 devname
, strerror(errno
));
3527 if (strncmp((char *) anchor
->sig
, MPB_SIGNATURE
, MPB_SIG_LEN
) != 0) {
3529 pr_err("no IMSM anchor on %s\n", devname
);
3534 __free_imsm(super
, 0);
3535 /* reload capability and hba */
3537 /* capability and hba must be updated with new super allocation */
3538 find_intel_hba_capability(fd
, super
, devname
);
3539 super
->len
= ROUND_UP(anchor
->mpb_size
, 512);
3540 if (posix_memalign(&super
->buf
, 512, super
->len
) != 0) {
3542 pr_err("unable to allocate %zu byte mpb buffer\n",
3547 memcpy(super
->buf
, anchor
, 512);
3549 sectors
= mpb_sectors(anchor
) - 1;
3552 if (posix_memalign(&super
->migr_rec_buf
, 512, MIGR_REC_BUF_SIZE
) != 0) {
3553 pr_err("%s could not allocate migr_rec buffer\n", __func__
);
3557 super
->clean_migration_record_by_mdmon
= 0;
3560 check_sum
= __gen_imsm_checksum(super
->anchor
);
3561 if (check_sum
!= __le32_to_cpu(super
->anchor
->check_sum
)) {
3563 pr_err("IMSM checksum %x != %x on %s\n",
3565 __le32_to_cpu(super
->anchor
->check_sum
),
3573 /* read the extended mpb */
3574 if (lseek64(fd
, dsize
- (512 * (2 + sectors
)), SEEK_SET
) < 0) {
3576 pr_err("Cannot seek to extended mpb on %s: %s\n",
3577 devname
, strerror(errno
));
3581 if ((unsigned)read(fd
, super
->buf
+ 512, super
->len
- 512) != super
->len
- 512) {
3583 pr_err("Cannot read extended mpb on %s: %s\n",
3584 devname
, strerror(errno
));
3588 check_sum
= __gen_imsm_checksum(super
->anchor
);
3589 if (check_sum
!= __le32_to_cpu(super
->anchor
->check_sum
)) {
3591 pr_err("IMSM checksum %x != %x on %s\n",
3592 check_sum
, __le32_to_cpu(super
->anchor
->check_sum
),
3597 /* FIXME the BBM log is disk specific so we cannot use this global
3598 * buffer for all disks. Ok for now since we only look at the global
3599 * bbm_log_size parameter to gate assembly
3601 super
->bbm_log
= __get_imsm_bbm_log(super
->anchor
);
3606 static int read_imsm_migr_rec(int fd
, struct intel_super
*super
);
3608 /* clears hi bits in metadata if MPB_ATTRIB_2TB_DISK not set */
3609 static void clear_hi(struct intel_super
*super
)
3611 struct imsm_super
*mpb
= super
->anchor
;
3613 if (mpb
->attributes
& MPB_ATTRIB_2TB_DISK
)
3615 for (i
= 0; i
< mpb
->num_disks
; ++i
) {
3616 struct imsm_disk
*disk
= &mpb
->disk
[i
];
3617 disk
->total_blocks_hi
= 0;
3619 for (i
= 0; i
< mpb
->num_raid_devs
; ++i
) {
3620 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
3623 for (n
= 0; n
< 2; ++n
) {
3624 struct imsm_map
*map
= get_imsm_map(dev
, n
);
3627 map
->pba_of_lba0_hi
= 0;
3628 map
->blocks_per_member_hi
= 0;
3629 map
->num_data_stripes_hi
= 0;
3635 load_and_parse_mpb(int fd
, struct intel_super
*super
, char *devname
, int keep_fd
)
3639 err
= load_imsm_mpb(fd
, super
, devname
);
3642 err
= load_imsm_disk(fd
, super
, devname
, keep_fd
);
3645 err
= parse_raid_devices(super
);
3650 static void __free_imsm_disk(struct dl
*d
)
3662 static void free_imsm_disks(struct intel_super
*super
)
3666 while (super
->disks
) {
3668 super
->disks
= d
->next
;
3669 __free_imsm_disk(d
);
3671 while (super
->disk_mgmt_list
) {
3672 d
= super
->disk_mgmt_list
;
3673 super
->disk_mgmt_list
= d
->next
;
3674 __free_imsm_disk(d
);
3676 while (super
->missing
) {
3678 super
->missing
= d
->next
;
3679 __free_imsm_disk(d
);
3684 /* free all the pieces hanging off of a super pointer */
3685 static void __free_imsm(struct intel_super
*super
, int free_disks
)
3687 struct intel_hba
*elem
, *next
;
3693 /* unlink capability description */
3695 if (super
->migr_rec_buf
) {
3696 free(super
->migr_rec_buf
);
3697 super
->migr_rec_buf
= NULL
;
3700 free_imsm_disks(super
);
3701 free_devlist(super
);
3705 free((void *)elem
->path
);
3713 static void free_imsm(struct intel_super
*super
)
3715 __free_imsm(super
, 1);
3719 static void free_super_imsm(struct supertype
*st
)
3721 struct intel_super
*super
= st
->sb
;
3730 static struct intel_super
*alloc_super(void)
3732 struct intel_super
*super
= malloc(sizeof(*super
));
3735 memset(super
, 0, sizeof(*super
));
3736 super
->current_vol
= -1;
3737 super
->create_offset
= ~((unsigned long long) 0);
3743 * find and allocate hba and OROM/EFI based on valid fd of RAID component device
3745 static int find_intel_hba_capability(int fd
, struct intel_super
*super
, char *devname
)
3747 struct sys_dev
*hba_name
;
3750 if ((fd
< 0) || check_env("IMSM_NO_PLATFORM")) {
3755 hba_name
= find_disk_attached_hba(fd
, NULL
);
3758 pr_err("%s is not attached to Intel(R) RAID controller.\n",
3762 rv
= attach_hba_to_super(super
, hba_name
);
3765 struct intel_hba
*hba
= super
->hba
;
3767 pr_err("%s is attached to Intel(R) %s RAID "
3768 "controller (%s),\n"
3769 " but the container is assigned to Intel(R) "
3770 "%s RAID controller (",
3773 hba_name
->pci_id
? : "Err!",
3774 get_sys_dev_type(hba_name
->type
));
3777 fprintf(stderr
, "%s", hba
->pci_id
? : "Err!");
3779 fprintf(stderr
, ", ");
3783 fprintf(stderr
, ").\n"
3784 " Mixing devices attached to different controllers "
3785 "is not allowed.\n");
3787 free_sys_dev(&hba_name
);
3790 super
->orom
= find_imsm_capability(hba_name
->type
);
3791 free_sys_dev(&hba_name
);
3797 /* find_missing - helper routine for load_super_imsm_all that identifies
3798 * disks that have disappeared from the system. This routine relies on
3799 * the mpb being uptodate, which it is at load time.
3801 static int find_missing(struct intel_super
*super
)
3804 struct imsm_super
*mpb
= super
->anchor
;
3806 struct imsm_disk
*disk
;
3808 for (i
= 0; i
< mpb
->num_disks
; i
++) {
3809 disk
= __get_imsm_disk(mpb
, i
);
3810 dl
= serial_to_dl(disk
->serial
, super
);
3814 dl
= malloc(sizeof(*dl
));
3820 dl
->devname
= strdup("missing");
3822 serialcpy(dl
->serial
, disk
->serial
);
3825 dl
->next
= super
->missing
;
3826 super
->missing
= dl
;
3833 static struct intel_disk
*disk_list_get(__u8
*serial
, struct intel_disk
*disk_list
)
3835 struct intel_disk
*idisk
= disk_list
;
3838 if (serialcmp(idisk
->disk
.serial
, serial
) == 0)
3840 idisk
= idisk
->next
;
3846 static int __prep_thunderdome(struct intel_super
**table
, int tbl_size
,
3847 struct intel_super
*super
,
3848 struct intel_disk
**disk_list
)
3850 struct imsm_disk
*d
= &super
->disks
->disk
;
3851 struct imsm_super
*mpb
= super
->anchor
;
3854 for (i
= 0; i
< tbl_size
; i
++) {
3855 struct imsm_super
*tbl_mpb
= table
[i
]->anchor
;
3856 struct imsm_disk
*tbl_d
= &table
[i
]->disks
->disk
;
3858 if (tbl_mpb
->family_num
== mpb
->family_num
) {
3859 if (tbl_mpb
->check_sum
== mpb
->check_sum
) {
3860 dprintf("%s: mpb from %d:%d matches %d:%d\n",
3861 __func__
, super
->disks
->major
,
3862 super
->disks
->minor
,
3863 table
[i
]->disks
->major
,
3864 table
[i
]->disks
->minor
);
3868 if (((is_configured(d
) && !is_configured(tbl_d
)) ||
3869 is_configured(d
) == is_configured(tbl_d
)) &&
3870 tbl_mpb
->generation_num
< mpb
->generation_num
) {
3871 /* current version of the mpb is a
3872 * better candidate than the one in
3873 * super_table, but copy over "cross
3874 * generational" status
3876 struct intel_disk
*idisk
;
3878 dprintf("%s: mpb from %d:%d replaces %d:%d\n",
3879 __func__
, super
->disks
->major
,
3880 super
->disks
->minor
,
3881 table
[i
]->disks
->major
,
3882 table
[i
]->disks
->minor
);
3884 idisk
= disk_list_get(tbl_d
->serial
, *disk_list
);
3885 if (idisk
&& is_failed(&idisk
->disk
))
3886 tbl_d
->status
|= FAILED_DISK
;
3889 struct intel_disk
*idisk
;
3890 struct imsm_disk
*disk
;
3892 /* tbl_mpb is more up to date, but copy
3893 * over cross generational status before
3896 disk
= __serial_to_disk(d
->serial
, mpb
, NULL
);
3897 if (disk
&& is_failed(disk
))
3898 d
->status
|= FAILED_DISK
;
3900 idisk
= disk_list_get(d
->serial
, *disk_list
);
3903 if (disk
&& is_configured(disk
))
3904 idisk
->disk
.status
|= CONFIGURED_DISK
;
3907 dprintf("%s: mpb from %d:%d prefer %d:%d\n",
3908 __func__
, super
->disks
->major
,
3909 super
->disks
->minor
,
3910 table
[i
]->disks
->major
,
3911 table
[i
]->disks
->minor
);
3919 table
[tbl_size
++] = super
;
3923 /* update/extend the merged list of imsm_disk records */
3924 for (j
= 0; j
< mpb
->num_disks
; j
++) {
3925 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, j
);
3926 struct intel_disk
*idisk
;
3928 idisk
= disk_list_get(disk
->serial
, *disk_list
);
3930 idisk
->disk
.status
|= disk
->status
;
3931 if (is_configured(&idisk
->disk
) ||
3932 is_failed(&idisk
->disk
))
3933 idisk
->disk
.status
&= ~(SPARE_DISK
);
3935 idisk
= calloc(1, sizeof(*idisk
));
3938 idisk
->owner
= IMSM_UNKNOWN_OWNER
;
3939 idisk
->disk
= *disk
;
3940 idisk
->next
= *disk_list
;
3944 if (serialcmp(idisk
->disk
.serial
, d
->serial
) == 0)
3951 static struct intel_super
*
3952 validate_members(struct intel_super
*super
, struct intel_disk
*disk_list
,
3955 struct imsm_super
*mpb
= super
->anchor
;
3959 for (i
= 0; i
< mpb
->num_disks
; i
++) {
3960 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, i
);
3961 struct intel_disk
*idisk
;
3963 idisk
= disk_list_get(disk
->serial
, disk_list
);
3965 if (idisk
->owner
== owner
||
3966 idisk
->owner
== IMSM_UNKNOWN_OWNER
)
3969 dprintf("%s: '%.16s' owner %d != %d\n",
3970 __func__
, disk
->serial
, idisk
->owner
,
3973 dprintf("%s: unknown disk %x [%d]: %.16s\n",
3974 __func__
, __le32_to_cpu(mpb
->family_num
), i
,
3980 if (ok_count
== mpb
->num_disks
)
3985 static void show_conflicts(__u32 family_num
, struct intel_super
*super_list
)
3987 struct intel_super
*s
;
3989 for (s
= super_list
; s
; s
= s
->next
) {
3990 if (family_num
!= s
->anchor
->family_num
)
3992 fprintf(stderr
, "Conflict, offlining family %#x on '%s'\n",
3993 __le32_to_cpu(family_num
), s
->disks
->devname
);
3997 static struct intel_super
*
3998 imsm_thunderdome(struct intel_super
**super_list
, int len
)
4000 struct intel_super
*super_table
[len
];
4001 struct intel_disk
*disk_list
= NULL
;
4002 struct intel_super
*champion
, *spare
;
4003 struct intel_super
*s
, **del
;
4008 memset(super_table
, 0, sizeof(super_table
));
4009 for (s
= *super_list
; s
; s
= s
->next
)
4010 tbl_size
= __prep_thunderdome(super_table
, tbl_size
, s
, &disk_list
);
4012 for (i
= 0; i
< tbl_size
; i
++) {
4013 struct imsm_disk
*d
;
4014 struct intel_disk
*idisk
;
4015 struct imsm_super
*mpb
= super_table
[i
]->anchor
;
4018 d
= &s
->disks
->disk
;
4020 /* 'd' must appear in merged disk list for its
4021 * configuration to be valid
4023 idisk
= disk_list_get(d
->serial
, disk_list
);
4024 if (idisk
&& idisk
->owner
== i
)
4025 s
= validate_members(s
, disk_list
, i
);
4030 dprintf("%s: marking family: %#x from %d:%d offline\n",
4031 __func__
, mpb
->family_num
,
4032 super_table
[i
]->disks
->major
,
4033 super_table
[i
]->disks
->minor
);
4037 /* This is where the mdadm implementation differs from the Windows
4038 * driver which has no strict concept of a container. We can only
4039 * assemble one family from a container, so when returning a prodigal
4040 * array member to this system the code will not be able to disambiguate
4041 * the container contents that should be assembled ("foreign" versus
4042 * "local"). It requires user intervention to set the orig_family_num
4043 * to a new value to establish a new container. The Windows driver in
4044 * this situation fixes up the volume name in place and manages the
4045 * foreign array as an independent entity.
4050 for (i
= 0; i
< tbl_size
; i
++) {
4051 struct intel_super
*tbl_ent
= super_table
[i
];
4057 if (tbl_ent
->anchor
->num_raid_devs
== 0) {
4062 if (s
&& !is_spare
) {
4063 show_conflicts(tbl_ent
->anchor
->family_num
, *super_list
);
4065 } else if (!s
&& !is_spare
)
4078 fprintf(stderr
, "Chose family %#x on '%s', "
4079 "assemble conflicts to new container with '--update=uuid'\n",
4080 __le32_to_cpu(s
->anchor
->family_num
), s
->disks
->devname
);
4082 /* collect all dl's onto 'champion', and update them to
4083 * champion's version of the status
4085 for (s
= *super_list
; s
; s
= s
->next
) {
4086 struct imsm_super
*mpb
= champion
->anchor
;
4087 struct dl
*dl
= s
->disks
;
4092 mpb
->attributes
|= s
->anchor
->attributes
& MPB_ATTRIB_2TB_DISK
;
4094 for (i
= 0; i
< mpb
->num_disks
; i
++) {
4095 struct imsm_disk
*disk
;
4097 disk
= __serial_to_disk(dl
->serial
, mpb
, &dl
->index
);
4100 /* only set index on disks that are a member of
4101 * a populated contianer, i.e. one with
4104 if (is_failed(&dl
->disk
))
4106 else if (is_spare(&dl
->disk
))
4112 if (i
>= mpb
->num_disks
) {
4113 struct intel_disk
*idisk
;
4115 idisk
= disk_list_get(dl
->serial
, disk_list
);
4116 if (idisk
&& is_spare(&idisk
->disk
) &&
4117 !is_failed(&idisk
->disk
) && !is_configured(&idisk
->disk
))
4125 dl
->next
= champion
->disks
;
4126 champion
->disks
= dl
;
4130 /* delete 'champion' from super_list */
4131 for (del
= super_list
; *del
; ) {
4132 if (*del
== champion
) {
4133 *del
= (*del
)->next
;
4136 del
= &(*del
)->next
;
4138 champion
->next
= NULL
;
4142 struct intel_disk
*idisk
= disk_list
;
4144 disk_list
= disk_list
->next
;
4153 get_sra_super_block(int fd
, struct intel_super
**super_list
, char *devname
, int *max
, int keep_fd
);
4154 static int get_super_block(struct intel_super
**super_list
, int devnum
, char *devname
,
4155 int major
, int minor
, int keep_fd
);
4157 get_devlist_super_block(struct md_list
*devlist
, struct intel_super
**super_list
,
4158 int *max
, int keep_fd
);
4161 static int load_super_imsm_all(struct supertype
*st
, int fd
, void **sbp
,
4162 char *devname
, struct md_list
*devlist
,
4165 struct intel_super
*super_list
= NULL
;
4166 struct intel_super
*super
= NULL
;
4171 /* 'fd' is an opened container */
4172 err
= get_sra_super_block(fd
, &super_list
, devname
, &i
, keep_fd
);
4174 /* get super block from devlist devices */
4175 err
= get_devlist_super_block(devlist
, &super_list
, &i
, keep_fd
);
4178 /* all mpbs enter, maybe one leaves */
4179 super
= imsm_thunderdome(&super_list
, i
);
4185 if (find_missing(super
) != 0) {
4191 /* load migration record */
4192 err
= load_imsm_migr_rec(super
, NULL
);
4194 /* migration is in progress,
4195 * but migr_rec cannot be loaded,
4201 /* Check migration compatibility */
4202 if ((err
== 0) && (check_mpb_migr_compatibility(super
) != 0)) {
4203 pr_err("Unsupported migration detected");
4205 fprintf(stderr
, " on %s\n", devname
);
4207 fprintf(stderr
, " (IMSM).\n");
4216 while (super_list
) {
4217 struct intel_super
*s
= super_list
;
4219 super_list
= super_list
->next
;
4229 st
->container_dev
= fd2devnum(fd
);
4231 st
->container_dev
= NoMdDev
;
4232 if (err
== 0 && st
->ss
== NULL
) {
4233 st
->ss
= &super_imsm
;
4234 st
->minor_version
= 0;
4235 st
->max_devs
= IMSM_MAX_DEVICES
;
4242 get_devlist_super_block(struct md_list
*devlist
, struct intel_super
**super_list
,
4243 int *max
, int keep_fd
)
4245 struct md_list
*tmpdev
;
4249 for (i
= 0, tmpdev
= devlist
; tmpdev
; tmpdev
= tmpdev
->next
) {
4250 if (tmpdev
->used
!= 1)
4252 if (tmpdev
->container
== 1) {
4254 int fd
= dev_open(tmpdev
->devname
, O_RDONLY
|O_EXCL
);
4256 pr_err("cannot open device %s: %s\n",
4257 tmpdev
->devname
, strerror(errno
));
4261 err
= get_sra_super_block(fd
, super_list
,
4262 tmpdev
->devname
, &lmax
,
4271 int major
= major(tmpdev
->st_rdev
);
4272 int minor
= minor(tmpdev
->st_rdev
);
4273 err
= get_super_block(super_list
,
4290 static int get_super_block(struct intel_super
**super_list
, int devnum
, char *devname
,
4291 int major
, int minor
, int keep_fd
)
4293 struct intel_super
*s
= NULL
;
4306 sprintf(nm
, "%d:%d", major
, minor
);
4307 dfd
= dev_open(nm
, O_RDWR
);
4313 rv
= find_intel_hba_capability(dfd
, s
, devname
);
4314 /* no orom/efi or non-intel hba of the disk */
4320 err
= load_and_parse_mpb(dfd
, s
, NULL
, keep_fd
);
4322 /* retry the load if we might have raced against mdmon */
4323 if (err
== 3 && (devnum
!= -1) && mdmon_running(devnum
))
4324 for (retry
= 0; retry
< 3; retry
++) {
4326 err
= load_and_parse_mpb(dfd
, s
, NULL
, keep_fd
);
4332 s
->next
= *super_list
;
4340 if ((dfd
>= 0) && (!keep_fd
))
4347 get_sra_super_block(int fd
, struct intel_super
**super_list
, char *devname
, int *max
, int keep_fd
)
4354 sra
= sysfs_read(fd
, 0, GET_LEVEL
|GET_VERSION
|GET_DEVS
|GET_STATE
);
4358 if (sra
->array
.major_version
!= -1 ||
4359 sra
->array
.minor_version
!= -2 ||
4360 strcmp(sra
->text_version
, "imsm") != 0) {
4365 devnum
= fd2devnum(fd
);
4366 for (sd
= sra
->devs
, i
= 0; sd
; sd
= sd
->next
, i
++) {
4367 if (get_super_block(super_list
, devnum
, devname
,
4368 sd
->disk
.major
, sd
->disk
.minor
, keep_fd
) != 0) {
4379 static int load_container_imsm(struct supertype
*st
, int fd
, char *devname
)
4381 return load_super_imsm_all(st
, fd
, &st
->sb
, devname
, NULL
, 1);
4385 static int load_super_imsm(struct supertype
*st
, int fd
, char *devname
)
4387 struct intel_super
*super
;
4390 if (test_partition(fd
))
4391 /* IMSM not allowed on partitions */
4394 free_super_imsm(st
);
4396 super
= alloc_super();
4398 pr_err("malloc of %zu failed.\n",
4402 /* Load hba and capabilities if they exist.
4403 * But do not preclude loading metadata in case capabilities or hba are
4404 * non-compliant and ignore_hw_compat is set.
4406 rv
= find_intel_hba_capability(fd
, super
, devname
);
4407 /* no orom/efi or non-intel hba of the disk */
4408 if ((rv
!= 0) && (st
->ignore_hw_compat
== 0)) {
4410 pr_err("No OROM/EFI properties for %s\n", devname
);
4414 rv
= load_and_parse_mpb(fd
, super
, devname
, 0);
4418 pr_err("Failed to load all information "
4419 "sections on %s\n", devname
);
4425 if (st
->ss
== NULL
) {
4426 st
->ss
= &super_imsm
;
4427 st
->minor_version
= 0;
4428 st
->max_devs
= IMSM_MAX_DEVICES
;
4431 /* load migration record */
4432 if (load_imsm_migr_rec(super
, NULL
) == 0) {
4433 /* Check for unsupported migration features */
4434 if (check_mpb_migr_compatibility(super
) != 0) {
4435 pr_err("Unsupported migration detected");
4437 fprintf(stderr
, " on %s\n", devname
);
4439 fprintf(stderr
, " (IMSM).\n");
4447 static __u16
info_to_blocks_per_strip(mdu_array_info_t
*info
)
4449 if (info
->level
== 1)
4451 return info
->chunk_size
>> 9;
4454 static unsigned long long info_to_blocks_per_member(mdu_array_info_t
*info
,
4455 unsigned long long size
)
4457 if (info
->level
== 1)
4460 return (size
* 2) & ~(info_to_blocks_per_strip(info
) - 1);
4463 static void imsm_update_version_info(struct intel_super
*super
)
4465 /* update the version and attributes */
4466 struct imsm_super
*mpb
= super
->anchor
;
4468 struct imsm_dev
*dev
;
4469 struct imsm_map
*map
;
4472 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
4473 dev
= get_imsm_dev(super
, i
);
4474 map
= get_imsm_map(dev
, MAP_0
);
4475 if (__le32_to_cpu(dev
->size_high
) > 0)
4476 mpb
->attributes
|= MPB_ATTRIB_2TB
;
4478 /* FIXME detect when an array spans a port multiplier */
4480 mpb
->attributes
|= MPB_ATTRIB_PM
;
4483 if (mpb
->num_raid_devs
> 1 ||
4484 mpb
->attributes
!= MPB_ATTRIB_CHECKSUM_VERIFY
) {
4485 version
= MPB_VERSION_ATTRIBS
;
4486 switch (get_imsm_raid_level(map
)) {
4487 case 0: mpb
->attributes
|= MPB_ATTRIB_RAID0
; break;
4488 case 1: mpb
->attributes
|= MPB_ATTRIB_RAID1
; break;
4489 case 10: mpb
->attributes
|= MPB_ATTRIB_RAID10
; break;
4490 case 5: mpb
->attributes
|= MPB_ATTRIB_RAID5
; break;
4493 if (map
->num_members
>= 5)
4494 version
= MPB_VERSION_5OR6_DISK_ARRAY
;
4495 else if (dev
->status
== DEV_CLONE_N_GO
)
4496 version
= MPB_VERSION_CNG
;
4497 else if (get_imsm_raid_level(map
) == 5)
4498 version
= MPB_VERSION_RAID5
;
4499 else if (map
->num_members
>= 3)
4500 version
= MPB_VERSION_3OR4_DISK_ARRAY
;
4501 else if (get_imsm_raid_level(map
) == 1)
4502 version
= MPB_VERSION_RAID1
;
4504 version
= MPB_VERSION_RAID0
;
4506 strcpy(((char *) mpb
->sig
) + strlen(MPB_SIGNATURE
), version
);
4510 static int check_name(struct intel_super
*super
, char *name
, int quiet
)
4512 struct imsm_super
*mpb
= super
->anchor
;
4513 char *reason
= NULL
;
4516 if (strlen(name
) > MAX_RAID_SERIAL_LEN
)
4517 reason
= "must be 16 characters or less";
4519 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
4520 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
4522 if (strncmp((char *) dev
->volume
, name
, MAX_RAID_SERIAL_LEN
) == 0) {
4523 reason
= "already exists";
4528 if (reason
&& !quiet
)
4529 pr_err("imsm volume name %s\n", reason
);
4534 static int init_super_imsm_volume(struct supertype
*st
, mdu_array_info_t
*info
,
4535 unsigned long long size
, char *name
,
4536 char *homehost
, int *uuid
)
4538 /* We are creating a volume inside a pre-existing container.
4539 * so st->sb is already set.
4541 struct intel_super
*super
= st
->sb
;
4542 struct imsm_super
*mpb
= super
->anchor
;
4543 struct intel_dev
*dv
;
4544 struct imsm_dev
*dev
;
4545 struct imsm_vol
*vol
;
4546 struct imsm_map
*map
;
4547 int idx
= mpb
->num_raid_devs
;
4549 unsigned long long array_blocks
;
4550 size_t size_old
, size_new
;
4551 unsigned long long num_data_stripes
;
4553 if (super
->orom
&& mpb
->num_raid_devs
>= super
->orom
->vpa
) {
4554 pr_err("This imsm-container already has the "
4555 "maximum of %d volumes\n", super
->orom
->vpa
);
4559 /* ensure the mpb is large enough for the new data */
4560 size_old
= __le32_to_cpu(mpb
->mpb_size
);
4561 size_new
= disks_to_mpb_size(info
->nr_disks
);
4562 if (size_new
> size_old
) {
4564 size_t size_round
= ROUND_UP(size_new
, 512);
4566 if (posix_memalign(&mpb_new
, 512, size_round
) != 0) {
4567 pr_err("could not allocate new mpb\n");
4570 if (posix_memalign(&super
->migr_rec_buf
, 512,
4571 MIGR_REC_BUF_SIZE
) != 0) {
4572 pr_err("%s could not allocate migr_rec buffer\n",
4579 memcpy(mpb_new
, mpb
, size_old
);
4582 super
->anchor
= mpb_new
;
4583 mpb
->mpb_size
= __cpu_to_le32(size_new
);
4584 memset(mpb_new
+ size_old
, 0, size_round
- size_old
);
4586 super
->current_vol
= idx
;
4588 /* handle 'failed_disks' by either:
4589 * a) create dummy disk entries in the table if this the first
4590 * volume in the array. We add them here as this is the only
4591 * opportunity to add them. add_to_super_imsm_volume()
4592 * handles the non-failed disks and continues incrementing
4594 * b) validate that 'failed_disks' matches the current number
4595 * of missing disks if the container is populated
4597 if (super
->current_vol
== 0) {
4599 for (i
= 0; i
< info
->failed_disks
; i
++) {
4600 struct imsm_disk
*disk
;
4603 disk
= __get_imsm_disk(mpb
, i
);
4604 disk
->status
= CONFIGURED_DISK
| FAILED_DISK
;
4605 disk
->scsi_id
= __cpu_to_le32(~(__u32
)0);
4606 snprintf((char *) disk
->serial
, MAX_RAID_SERIAL_LEN
,
4609 find_missing(super
);
4614 for (d
= super
->missing
; d
; d
= d
->next
)
4616 if (info
->failed_disks
> missing
) {
4617 pr_err("unable to add 'missing' disk to container\n");
4622 if (!check_name(super
, name
, 0))
4624 dv
= malloc(sizeof(*dv
));
4626 pr_err("failed to allocate device list entry\n");
4629 dev
= calloc(1, sizeof(*dev
) + sizeof(__u32
) * (info
->raid_disks
- 1));
4632 pr_err("could not allocate raid device\n");
4636 strncpy((char *) dev
->volume
, name
, MAX_RAID_SERIAL_LEN
);
4637 array_blocks
= calc_array_size(info
->level
, info
->raid_disks
,
4638 info
->layout
, info
->chunk_size
,
4640 /* round array size down to closest MB */
4641 array_blocks
= (array_blocks
>> SECT_PER_MB_SHIFT
) << SECT_PER_MB_SHIFT
;
4643 dev
->size_low
= __cpu_to_le32((__u32
) array_blocks
);
4644 dev
->size_high
= __cpu_to_le32((__u32
) (array_blocks
>> 32));
4645 dev
->status
= (DEV_READ_COALESCING
| DEV_WRITE_COALESCING
);
4647 vol
->migr_state
= 0;
4648 set_migr_type(dev
, MIGR_INIT
);
4649 vol
->dirty
= !info
->state
;
4650 vol
->curr_migr_unit
= 0;
4651 map
= get_imsm_map(dev
, MAP_0
);
4652 set_pba_of_lba0(map
, super
->create_offset
);
4653 set_blocks_per_member(map
, info_to_blocks_per_member(info
, size
));
4654 map
->blocks_per_strip
= __cpu_to_le16(info_to_blocks_per_strip(info
));
4655 map
->failed_disk_num
= ~0;
4656 if (info
->level
> 0)
4657 map
->map_state
= IMSM_T_STATE_UNINITIALIZED
;
4659 map
->map_state
= info
->failed_disks
? IMSM_T_STATE_FAILED
:
4660 IMSM_T_STATE_NORMAL
;
4663 if (info
->level
== 1 && info
->raid_disks
> 2) {
4666 pr_err("imsm does not support more than 2 disks"
4667 "in a raid1 volume\n");
4671 map
->raid_level
= info
->level
;
4672 if (info
->level
== 10) {
4673 map
->raid_level
= 1;
4674 map
->num_domains
= info
->raid_disks
/ 2;
4675 } else if (info
->level
== 1)
4676 map
->num_domains
= info
->raid_disks
;
4678 map
->num_domains
= 1;
4680 /* info->size is only int so use the 'size' parameter instead */
4681 num_data_stripes
= (size
* 2) / info_to_blocks_per_strip(info
);
4682 num_data_stripes
/= map
->num_domains
;
4683 set_num_data_stripes(map
, num_data_stripes
);
4685 map
->num_members
= info
->raid_disks
;
4686 for (i
= 0; i
< map
->num_members
; i
++) {
4687 /* initialized in add_to_super */
4688 set_imsm_ord_tbl_ent(map
, i
, IMSM_ORD_REBUILD
);
4690 mpb
->num_raid_devs
++;
4693 dv
->index
= super
->current_vol
;
4694 dv
->next
= super
->devlist
;
4695 super
->devlist
= dv
;
4697 imsm_update_version_info(super
);
4702 static int init_super_imsm(struct supertype
*st
, mdu_array_info_t
*info
,
4703 unsigned long long size
, char *name
,
4704 char *homehost
, int *uuid
)
4706 /* This is primarily called by Create when creating a new array.
4707 * We will then get add_to_super called for each component, and then
4708 * write_init_super called to write it out to each device.
4709 * For IMSM, Create can create on fresh devices or on a pre-existing
4711 * To create on a pre-existing array a different method will be called.
4712 * This one is just for fresh drives.
4714 struct intel_super
*super
;
4715 struct imsm_super
*mpb
;
4720 return init_super_imsm_volume(st
, info
, size
, name
, homehost
, uuid
);
4723 mpb_size
= disks_to_mpb_size(info
->nr_disks
);
4727 super
= alloc_super();
4728 if (super
&& posix_memalign(&super
->buf
, 512, mpb_size
) != 0) {
4733 pr_err("%s could not allocate superblock\n", __func__
);
4736 if (posix_memalign(&super
->migr_rec_buf
, 512, MIGR_REC_BUF_SIZE
) != 0) {
4737 pr_err("%s could not allocate migr_rec buffer\n", __func__
);
4742 memset(super
->buf
, 0, mpb_size
);
4744 mpb
->mpb_size
= __cpu_to_le32(mpb_size
);
4748 /* zeroing superblock */
4752 mpb
->attributes
= MPB_ATTRIB_CHECKSUM_VERIFY
;
4754 version
= (char *) mpb
->sig
;
4755 strcpy(version
, MPB_SIGNATURE
);
4756 version
+= strlen(MPB_SIGNATURE
);
4757 strcpy(version
, MPB_VERSION_RAID0
);
4763 static int add_to_super_imsm_volume(struct supertype
*st
, mdu_disk_info_t
*dk
,
4764 int fd
, char *devname
)
4766 struct intel_super
*super
= st
->sb
;
4767 struct imsm_super
*mpb
= super
->anchor
;
4768 struct imsm_disk
*_disk
;
4769 struct imsm_dev
*dev
;
4770 struct imsm_map
*map
;
4774 dev
= get_imsm_dev(super
, super
->current_vol
);
4775 map
= get_imsm_map(dev
, MAP_0
);
4777 if (! (dk
->state
& (1<<MD_DISK_SYNC
))) {
4778 pr_err("%s: Cannot add spare devices to IMSM volume\n",
4784 /* we're doing autolayout so grab the pre-marked (in
4785 * validate_geometry) raid_disk
4787 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
4788 if (dl
->raiddisk
== dk
->raid_disk
)
4791 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
4792 if (dl
->major
== dk
->major
&&
4793 dl
->minor
== dk
->minor
)
4798 pr_err("%s is not a member of the same container\n", devname
);
4802 /* add a pristine spare to the metadata */
4803 if (dl
->index
< 0) {
4804 dl
->index
= super
->anchor
->num_disks
;
4805 super
->anchor
->num_disks
++;
4807 /* Check the device has not already been added */
4808 slot
= get_imsm_disk_slot(map
, dl
->index
);
4810 (get_imsm_ord_tbl_ent(dev
, slot
, MAP_X
) & IMSM_ORD_REBUILD
) == 0) {
4811 pr_err("%s has been included in this array twice\n",
4815 set_imsm_ord_tbl_ent(map
, dk
->raid_disk
, dl
->index
);
4816 dl
->disk
.status
= CONFIGURED_DISK
;
4818 /* update size of 'missing' disks to be at least as large as the
4819 * largest acitve member (we only have dummy missing disks when
4820 * creating the first volume)
4822 if (super
->current_vol
== 0) {
4823 for (df
= super
->missing
; df
; df
= df
->next
) {
4824 if (total_blocks(&dl
->disk
) > total_blocks(&df
->disk
))
4825 set_total_blocks(&df
->disk
, total_blocks(&dl
->disk
));
4826 _disk
= __get_imsm_disk(mpb
, df
->index
);
4831 /* refresh unset/failed slots to point to valid 'missing' entries */
4832 for (df
= super
->missing
; df
; df
= df
->next
)
4833 for (slot
= 0; slot
< mpb
->num_disks
; slot
++) {
4834 __u32 ord
= get_imsm_ord_tbl_ent(dev
, slot
, MAP_X
);
4836 if ((ord
& IMSM_ORD_REBUILD
) == 0)
4838 set_imsm_ord_tbl_ent(map
, slot
, df
->index
| IMSM_ORD_REBUILD
);
4839 if (is_gen_migration(dev
)) {
4840 struct imsm_map
*map2
= get_imsm_map(dev
,
4842 int slot2
= get_imsm_disk_slot(map2
, df
->index
);
4843 if ((slot2
< map2
->num_members
) &&
4845 __u32 ord2
= get_imsm_ord_tbl_ent(dev
,
4848 if ((unsigned)df
->index
==
4850 set_imsm_ord_tbl_ent(map2
,
4856 dprintf("set slot:%d to missing disk:%d\n", slot
, df
->index
);
4860 /* if we are creating the first raid device update the family number */
4861 if (super
->current_vol
== 0) {
4863 struct imsm_dev
*_dev
= __get_imsm_dev(mpb
, 0);
4865 _disk
= __get_imsm_disk(mpb
, dl
->index
);
4866 if (!_dev
|| !_disk
) {
4867 pr_err("BUG mpb setup error\n");
4873 sum
+= __gen_imsm_checksum(mpb
);
4874 mpb
->family_num
= __cpu_to_le32(sum
);
4875 mpb
->orig_family_num
= mpb
->family_num
;
4877 super
->current_disk
= dl
;
4882 * Function marks disk as spare and restores disk serial
4883 * in case it was previously marked as failed by takeover operation
4885 * -1 : critical error
4886 * 0 : disk is marked as spare but serial is not set
4889 int mark_spare(struct dl
*disk
)
4891 __u8 serial
[MAX_RAID_SERIAL_LEN
];
4898 if (!imsm_read_serial(disk
->fd
, NULL
, serial
)) {
4899 /* Restore disk serial number, because takeover marks disk
4900 * as failed and adds to serial ':0' before it becomes
4903 serialcpy(disk
->serial
, serial
);
4904 serialcpy(disk
->disk
.serial
, serial
);
4907 disk
->disk
.status
= SPARE_DISK
;
4913 static int add_to_super_imsm(struct supertype
*st
, mdu_disk_info_t
*dk
,
4914 int fd
, char *devname
)
4916 struct intel_super
*super
= st
->sb
;
4918 unsigned long long size
;
4923 /* If we are on an RAID enabled platform check that the disk is
4924 * attached to the raid controller.
4925 * We do not need to test disks attachment for container based additions,
4926 * they shall be already tested when container was created/assembled.
4928 rv
= find_intel_hba_capability(fd
, super
, devname
);
4929 /* no orom/efi or non-intel hba of the disk */
4931 dprintf("capability: %p fd: %d ret: %d\n",
4932 super
->orom
, fd
, rv
);
4936 if (super
->current_vol
>= 0)
4937 return add_to_super_imsm_volume(st
, dk
, fd
, devname
);
4940 dd
= malloc(sizeof(*dd
));
4942 pr_err("malloc failed %s:%d.\n", __func__
, __LINE__
);
4945 memset(dd
, 0, sizeof(*dd
));
4946 dd
->major
= major(stb
.st_rdev
);
4947 dd
->minor
= minor(stb
.st_rdev
);
4948 dd
->devname
= devname
? strdup(devname
) : NULL
;
4951 dd
->action
= DISK_ADD
;
4952 rv
= imsm_read_serial(fd
, devname
, dd
->serial
);
4954 pr_err("failed to retrieve scsi serial, aborting\n");
4959 get_dev_size(fd
, NULL
, &size
);
4961 serialcpy(dd
->disk
.serial
, dd
->serial
);
4962 set_total_blocks(&dd
->disk
, size
);
4963 if (__le32_to_cpu(dd
->disk
.total_blocks_hi
) > 0) {
4964 struct imsm_super
*mpb
= super
->anchor
;
4965 mpb
->attributes
|= MPB_ATTRIB_2TB_DISK
;
4968 if (sysfs_disk_to_scsi_id(fd
, &id
) == 0)
4969 dd
->disk
.scsi_id
= __cpu_to_le32(id
);
4971 dd
->disk
.scsi_id
= __cpu_to_le32(0);
4973 if (st
->update_tail
) {
4974 dd
->next
= super
->disk_mgmt_list
;
4975 super
->disk_mgmt_list
= dd
;
4977 dd
->next
= super
->disks
;
4979 super
->updates_pending
++;
4986 static int remove_from_super_imsm(struct supertype
*st
, mdu_disk_info_t
*dk
)
4988 struct intel_super
*super
= st
->sb
;
4991 /* remove from super works only in mdmon - for communication
4992 * manager - monitor. Check if communication memory buffer
4995 if (!st
->update_tail
) {
4996 pr_err("%s shall be used in mdmon context only"
4997 "(line %d).\n", __func__
, __LINE__
);
5000 dd
= malloc(sizeof(*dd
));
5002 pr_err("malloc failed %s:%d.\n", __func__
, __LINE__
);
5005 memset(dd
, 0, sizeof(*dd
));
5006 dd
->major
= dk
->major
;
5007 dd
->minor
= dk
->minor
;
5010 dd
->action
= DISK_REMOVE
;
5012 dd
->next
= super
->disk_mgmt_list
;
5013 super
->disk_mgmt_list
= dd
;
5019 static int store_imsm_mpb(int fd
, struct imsm_super
*mpb
);
5023 struct imsm_super anchor
;
5024 } spare_record
__attribute__ ((aligned(512)));
5026 /* spare records have their own family number and do not have any defined raid
5029 static int write_super_imsm_spares(struct intel_super
*super
, int doclose
)
5031 struct imsm_super
*mpb
= super
->anchor
;
5032 struct imsm_super
*spare
= &spare_record
.anchor
;
5036 spare
->mpb_size
= __cpu_to_le32(sizeof(struct imsm_super
)),
5037 spare
->generation_num
= __cpu_to_le32(1UL),
5038 spare
->attributes
= MPB_ATTRIB_CHECKSUM_VERIFY
;
5039 spare
->num_disks
= 1,
5040 spare
->num_raid_devs
= 0,
5041 spare
->cache_size
= mpb
->cache_size
,
5042 spare
->pwr_cycle_count
= __cpu_to_le32(1),
5044 snprintf((char *) spare
->sig
, MAX_SIGNATURE_LENGTH
,
5045 MPB_SIGNATURE MPB_VERSION_RAID0
);
5047 for (d
= super
->disks
; d
; d
= d
->next
) {
5051 spare
->disk
[0] = d
->disk
;
5052 if (__le32_to_cpu(d
->disk
.total_blocks_hi
) > 0)
5053 spare
->attributes
|= MPB_ATTRIB_2TB_DISK
;
5055 sum
= __gen_imsm_checksum(spare
);
5056 spare
->family_num
= __cpu_to_le32(sum
);
5057 spare
->orig_family_num
= 0;
5058 sum
= __gen_imsm_checksum(spare
);
5059 spare
->check_sum
= __cpu_to_le32(sum
);
5061 if (store_imsm_mpb(d
->fd
, spare
)) {
5062 fprintf(stderr
, "%s: failed for device %d:%d %s\n",
5063 __func__
, d
->major
, d
->minor
, strerror(errno
));
5075 static int write_super_imsm(struct supertype
*st
, int doclose
)
5077 struct intel_super
*super
= st
->sb
;
5078 struct imsm_super
*mpb
= super
->anchor
;
5084 __u32 mpb_size
= sizeof(struct imsm_super
) - sizeof(struct imsm_disk
);
5086 int clear_migration_record
= 1;
5088 /* 'generation' is incremented everytime the metadata is written */
5089 generation
= __le32_to_cpu(mpb
->generation_num
);
5091 mpb
->generation_num
= __cpu_to_le32(generation
);
5093 /* fix up cases where previous mdadm releases failed to set
5096 if (mpb
->orig_family_num
== 0)
5097 mpb
->orig_family_num
= mpb
->family_num
;
5099 for (d
= super
->disks
; d
; d
= d
->next
) {
5103 mpb
->disk
[d
->index
] = d
->disk
;
5107 for (d
= super
->missing
; d
; d
= d
->next
) {
5108 mpb
->disk
[d
->index
] = d
->disk
;
5111 mpb
->num_disks
= num_disks
;
5112 mpb_size
+= sizeof(struct imsm_disk
) * mpb
->num_disks
;
5114 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
5115 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
5116 struct imsm_dev
*dev2
= get_imsm_dev(super
, i
);
5118 imsm_copy_dev(dev
, dev2
);
5119 mpb_size
+= sizeof_imsm_dev(dev
, 0);
5121 if (is_gen_migration(dev2
))
5122 clear_migration_record
= 0;
5124 mpb_size
+= __le32_to_cpu(mpb
->bbm_log_size
);
5125 mpb
->mpb_size
= __cpu_to_le32(mpb_size
);
5127 /* recalculate checksum */
5128 sum
= __gen_imsm_checksum(mpb
);
5129 mpb
->check_sum
= __cpu_to_le32(sum
);
5131 if (super
->clean_migration_record_by_mdmon
) {
5132 clear_migration_record
= 1;
5133 super
->clean_migration_record_by_mdmon
= 0;
5135 if (clear_migration_record
)
5136 memset(super
->migr_rec_buf
, 0, MIGR_REC_BUF_SIZE
);
5138 /* write the mpb for disks that compose raid devices */
5139 for (d
= super
->disks
; d
; d
= d
->next
) {
5140 if (d
->index
< 0 || is_failed(&d
->disk
))
5143 if (clear_migration_record
) {
5144 unsigned long long dsize
;
5146 get_dev_size(d
->fd
, NULL
, &dsize
);
5147 if (lseek64(d
->fd
, dsize
- 512, SEEK_SET
) >= 0) {
5148 if (write(d
->fd
, super
->migr_rec_buf
,
5149 MIGR_REC_BUF_SIZE
) != MIGR_REC_BUF_SIZE
)
5150 perror("Write migr_rec failed");
5154 if (store_imsm_mpb(d
->fd
, mpb
))
5156 "%s: failed for device %d:%d (fd: %d)%s\n",
5157 __func__
, d
->major
, d
->minor
,
5158 d
->fd
, strerror(errno
));
5167 return write_super_imsm_spares(super
, doclose
);
5173 static int create_array(struct supertype
*st
, int dev_idx
)
5176 struct imsm_update_create_array
*u
;
5177 struct intel_super
*super
= st
->sb
;
5178 struct imsm_dev
*dev
= get_imsm_dev(super
, dev_idx
);
5179 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
5180 struct disk_info
*inf
;
5181 struct imsm_disk
*disk
;
5184 len
= sizeof(*u
) - sizeof(*dev
) + sizeof_imsm_dev(dev
, 0) +
5185 sizeof(*inf
) * map
->num_members
;
5188 fprintf(stderr
, "%s: failed to allocate update buffer\n",
5193 u
->type
= update_create_array
;
5194 u
->dev_idx
= dev_idx
;
5195 imsm_copy_dev(&u
->dev
, dev
);
5196 inf
= get_disk_info(u
);
5197 for (i
= 0; i
< map
->num_members
; i
++) {
5198 int idx
= get_imsm_disk_idx(dev
, i
, MAP_X
);
5200 disk
= get_imsm_disk(super
, idx
);
5201 serialcpy(inf
[i
].serial
, disk
->serial
);
5203 append_metadata_update(st
, u
, len
);
5208 static int mgmt_disk(struct supertype
*st
)
5210 struct intel_super
*super
= st
->sb
;
5212 struct imsm_update_add_remove_disk
*u
;
5214 if (!super
->disk_mgmt_list
)
5220 fprintf(stderr
, "%s: failed to allocate update buffer\n",
5225 u
->type
= update_add_remove_disk
;
5226 append_metadata_update(st
, u
, len
);
5231 static int write_init_super_imsm(struct supertype
*st
)
5233 struct intel_super
*super
= st
->sb
;
5234 int current_vol
= super
->current_vol
;
5236 /* we are done with current_vol reset it to point st at the container */
5237 super
->current_vol
= -1;
5239 if (st
->update_tail
) {
5240 /* queue the recently created array / added disk
5241 * as a metadata update */
5244 /* determine if we are creating a volume or adding a disk */
5245 if (current_vol
< 0) {
5246 /* in the mgmt (add/remove) disk case we are running
5247 * in mdmon context, so don't close fd's
5249 return mgmt_disk(st
);
5251 rv
= create_array(st
, current_vol
);
5256 for (d
= super
->disks
; d
; d
= d
->next
)
5257 Kill(d
->devname
, NULL
, 0, 1, 1);
5258 return write_super_imsm(st
, 1);
5263 static int store_super_imsm(struct supertype
*st
, int fd
)
5265 struct intel_super
*super
= st
->sb
;
5266 struct imsm_super
*mpb
= super
? super
->anchor
: NULL
;
5272 return store_imsm_mpb(fd
, mpb
);
5278 static int imsm_bbm_log_size(struct imsm_super
*mpb
)
5280 return __le32_to_cpu(mpb
->bbm_log_size
);
5284 static int validate_geometry_imsm_container(struct supertype
*st
, int level
,
5285 int layout
, int raiddisks
, int chunk
,
5286 unsigned long long size
, char *dev
,
5287 unsigned long long *freesize
,
5291 unsigned long long ldsize
;
5292 struct intel_super
*super
=NULL
;
5295 if (level
!= LEVEL_CONTAINER
)
5300 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
5303 pr_err("imsm: Cannot open %s: %s\n",
5304 dev
, strerror(errno
));
5307 if (!get_dev_size(fd
, dev
, &ldsize
)) {
5312 /* capabilities retrieve could be possible
5313 * note that there is no fd for the disks in array.
5315 super
= alloc_super();
5317 pr_err("malloc of %zu failed.\n",
5323 rv
= find_intel_hba_capability(fd
, super
, verbose
? dev
: NULL
);
5327 fd2devname(fd
, str
);
5328 dprintf("validate_geometry_imsm_container: fd: %d %s orom: %p rv: %d raiddisk: %d\n",
5329 fd
, str
, super
->orom
, rv
, raiddisks
);
5331 /* no orom/efi or non-intel hba of the disk */
5338 if (raiddisks
> super
->orom
->tds
) {
5340 pr_err("%d exceeds maximum number of"
5341 " platform supported disks: %d\n",
5342 raiddisks
, super
->orom
->tds
);
5346 if ((super
->orom
->attr
& IMSM_OROM_ATTR_2TB_DISK
) == 0 &&
5347 (ldsize
>> 9) >> 32 > 0) {
5349 pr_err("%s exceeds maximum platform supported size\n", dev
);
5355 *freesize
= avail_size_imsm(st
, ldsize
>> 9);
5361 static unsigned long long find_size(struct extent
*e
, int *idx
, int num_extents
)
5363 const unsigned long long base_start
= e
[*idx
].start
;
5364 unsigned long long end
= base_start
+ e
[*idx
].size
;
5367 if (base_start
== end
)
5371 for (i
= *idx
; i
< num_extents
; i
++) {
5372 /* extend overlapping extents */
5373 if (e
[i
].start
>= base_start
&&
5374 e
[i
].start
<= end
) {
5377 if (e
[i
].start
+ e
[i
].size
> end
)
5378 end
= e
[i
].start
+ e
[i
].size
;
5379 } else if (e
[i
].start
> end
) {
5385 return end
- base_start
;
5388 static unsigned long long merge_extents(struct intel_super
*super
, int sum_extents
)
5390 /* build a composite disk with all known extents and generate a new
5391 * 'maxsize' given the "all disks in an array must share a common start
5392 * offset" constraint
5394 struct extent
*e
= calloc(sum_extents
, sizeof(*e
));
5398 unsigned long long pos
;
5399 unsigned long long start
= 0;
5400 unsigned long long maxsize
;
5401 unsigned long reserve
;
5406 /* coalesce and sort all extents. also, check to see if we need to
5407 * reserve space between member arrays
5410 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
5413 for (i
= 0; i
< dl
->extent_cnt
; i
++)
5416 qsort(e
, sum_extents
, sizeof(*e
), cmp_extent
);
5421 while (i
< sum_extents
) {
5422 e
[j
].start
= e
[i
].start
;
5423 e
[j
].size
= find_size(e
, &i
, sum_extents
);
5425 if (e
[j
-1].size
== 0)
5434 unsigned long long esize
;
5436 esize
= e
[i
].start
- pos
;
5437 if (esize
>= maxsize
) {
5442 pos
= e
[i
].start
+ e
[i
].size
;
5444 } while (e
[i
-1].size
);
5450 /* FIXME assumes volume at offset 0 is the first volume in a
5453 if (start_extent
> 0)
5454 reserve
= IMSM_RESERVED_SECTORS
; /* gap between raid regions */
5458 if (maxsize
< reserve
)
5461 super
->create_offset
= ~((unsigned long long) 0);
5462 if (start
+ reserve
> super
->create_offset
)
5463 return 0; /* start overflows create_offset */
5464 super
->create_offset
= start
+ reserve
;
5466 return maxsize
- reserve
;
5469 static int is_raid_level_supported(const struct imsm_orom
*orom
, int level
, int raiddisks
)
5471 if (level
< 0 || level
== 6 || level
== 4)
5474 /* if we have an orom prevent invalid raid levels */
5477 case 0: return imsm_orom_has_raid0(orom
);
5480 return imsm_orom_has_raid1e(orom
);
5481 return imsm_orom_has_raid1(orom
) && raiddisks
== 2;
5482 case 10: return imsm_orom_has_raid10(orom
) && raiddisks
== 4;
5483 case 5: return imsm_orom_has_raid5(orom
) && raiddisks
> 2;
5486 return 1; /* not on an Intel RAID platform so anything goes */
5493 active_arrays_by_format(char *name
, char* hba
, struct md_list
**devlist
,
5494 int dpa
, int verbose
)
5496 struct mdstat_ent
*mdstat
= mdstat_read(0, 0);
5497 struct mdstat_ent
*memb
= NULL
;
5500 struct md_list
*dv
= NULL
;
5503 for (memb
= mdstat
; memb
; memb
= memb
->next
) {
5504 if (memb
->metadata_version
&&
5505 (strncmp(memb
->metadata_version
, "external:", 9) == 0) &&
5506 (strcmp(&memb
->metadata_version
[9], name
) == 0) &&
5507 !is_subarray(memb
->metadata_version
+9) &&
5509 struct dev_member
*dev
= memb
->members
;
5511 while(dev
&& (fd
< 0)) {
5512 char *path
= malloc(strlen(dev
->name
) + strlen("/dev/") + 1);
5514 num
= sprintf(path
, "%s%s", "/dev/", dev
->name
);
5516 fd
= open(path
, O_RDONLY
, 0);
5517 if ((num
<= 0) || (fd
< 0)) {
5518 pr_vrb(": Cannot open %s: %s\n",
5519 dev
->name
, strerror(errno
));
5526 if ((fd
>= 0) && disk_attached_to_hba(fd
, hba
)) {
5527 struct mdstat_ent
*vol
;
5528 for (vol
= mdstat
; vol
; vol
= vol
->next
) {
5529 if ((vol
->active
> 0) &&
5530 vol
->metadata_version
&&
5531 is_container_member(vol
, memb
->dev
)) {
5536 if (*devlist
&& (found
< dpa
)) {
5537 dv
= calloc(1, sizeof(*dv
));
5539 pr_err("calloc failed\n");
5541 dv
->devname
= malloc(strlen(memb
->dev
) + strlen("/dev/") + 1);
5542 if (dv
->devname
!= NULL
) {
5543 sprintf(dv
->devname
, "%s%s", "/dev/", memb
->dev
);
5546 dv
->next
= *devlist
;
5557 free_mdstat(mdstat
);
5562 static struct md_list
*
5563 get_loop_devices(void)
5566 struct md_list
*devlist
= NULL
;
5567 struct md_list
*dv
= NULL
;
5569 for(i
= 0; i
< 12; i
++) {
5570 dv
= calloc(1, sizeof(*dv
));
5572 pr_err("calloc failed\n");
5575 dv
->devname
= malloc(40);
5576 if (dv
->devname
== NULL
) {
5577 pr_err("malloc failed\n");
5581 sprintf(dv
->devname
, "/dev/loop%d", i
);
5589 static struct md_list
*
5590 get_devices(const char *hba_path
)
5592 struct md_list
*devlist
= NULL
;
5593 struct md_list
*dv
= NULL
;
5599 devlist
= get_loop_devices();
5602 /* scroll through /sys/dev/block looking for devices attached to
5605 dir
= opendir("/sys/dev/block");
5606 for (ent
= dir
? readdir(dir
) : NULL
; ent
; ent
= readdir(dir
)) {
5611 if (sscanf(ent
->d_name
, "%d:%d", &major
, &minor
) != 2)
5613 path
= devt_to_devpath(makedev(major
, minor
));
5616 if (!path_attached_to_hba(path
, hba_path
)) {
5623 fd
= dev_open(ent
->d_name
, O_RDONLY
);
5625 fd2devname(fd
, buf
);
5628 pr_err("cannot open device: %s\n",
5634 dv
= calloc(1, sizeof(*dv
));
5636 pr_err("malloc failed\n");
5640 dv
->devname
= strdup(buf
);
5641 if (dv
->devname
== NULL
) {
5642 pr_err("malloc failed\n");
5653 devlist
= devlist
->next
;
5663 count_volumes_list(struct md_list
*devlist
, char *homehost
,
5664 int verbose
, int *found
)
5666 struct md_list
*tmpdev
;
5668 struct supertype
*st
= NULL
;
5670 /* first walk the list of devices to find a consistent set
5671 * that match the criterea, if that is possible.
5672 * We flag the ones we like with 'used'.
5675 st
= match_metadata_desc_imsm("imsm");
5677 pr_vrb(": cannot allocate memory for imsm supertype\n");
5681 for (tmpdev
= devlist
; tmpdev
; tmpdev
= tmpdev
->next
) {
5682 char *devname
= tmpdev
->devname
;
5684 struct supertype
*tst
;
5686 if (tmpdev
->used
> 1)
5688 tst
= dup_super(st
);
5690 pr_vrb(": cannot allocate memory for imsm supertype\n");
5693 tmpdev
->container
= 0;
5694 dfd
= dev_open(devname
, O_RDONLY
|O_EXCL
);
5696 dprintf(": cannot open device %s: %s\n",
5697 devname
, strerror(errno
));
5699 } else if (fstat(dfd
, &stb
)< 0) {
5701 dprintf(": fstat failed for %s: %s\n",
5702 devname
, strerror(errno
));
5704 } else if ((stb
.st_mode
& S_IFMT
) != S_IFBLK
) {
5705 dprintf(": %s is not a block device.\n",
5708 } else if (must_be_container(dfd
)) {
5709 struct supertype
*cst
;
5710 cst
= super_by_fd(dfd
, NULL
);
5712 dprintf(": cannot recognize container type %s\n",
5715 } else if (tst
->ss
!= st
->ss
) {
5716 dprintf(": non-imsm container - ignore it: %s\n",
5719 } else if (!tst
->ss
->load_container
||
5720 tst
->ss
->load_container(tst
, dfd
, NULL
))
5723 tmpdev
->container
= 1;
5726 cst
->ss
->free_super(cst
);
5728 tmpdev
->st_rdev
= stb
.st_rdev
;
5729 if (tst
->ss
->load_super(tst
,dfd
, NULL
)) {
5730 dprintf(": no RAID superblock on %s\n",
5733 } else if (tst
->ss
->compare_super
== NULL
) {
5734 dprintf(": Cannot assemble %s metadata on %s\n",
5735 tst
->ss
->name
, devname
);
5741 if (tmpdev
->used
== 2 || tmpdev
->used
== 4) {
5742 /* Ignore unrecognised devices during auto-assembly */
5747 tst
->ss
->getinfo_super(tst
, &info
, NULL
);
5749 if (st
->minor_version
== -1)
5750 st
->minor_version
= tst
->minor_version
;
5752 if (memcmp(info
.uuid
, uuid_zero
,
5753 sizeof(int[4])) == 0) {
5754 /* this is a floating spare. It cannot define
5755 * an array unless there are no more arrays of
5756 * this type to be found. It can be included
5757 * in an array of this type though.
5763 if (st
->ss
!= tst
->ss
||
5764 st
->minor_version
!= tst
->minor_version
||
5765 st
->ss
->compare_super(st
, tst
) != 0) {
5766 /* Some mismatch. If exactly one array matches this host,
5767 * we can resolve on that one.
5768 * Or, if we are auto assembling, we just ignore the second
5771 dprintf(": superblock on %s doesn't match others - assembly aborted\n",
5777 dprintf("found: devname: %s\n", devname
);
5781 tst
->ss
->free_super(tst
);
5785 if ((err
= load_super_imsm_all(st
, -1, &st
->sb
, NULL
, devlist
, 0)) == 0) {
5786 struct mdinfo
*iter
, *head
= st
->ss
->container_content(st
, NULL
);
5787 for (iter
= head
; iter
; iter
= iter
->next
) {
5788 dprintf("content->text_version: %s vol\n",
5789 iter
->text_version
);
5790 if (iter
->array
.state
& (1<<MD_SB_BLOCK_VOLUME
)) {
5791 /* do not assemble arrays with unsupported
5793 dprintf(": Cannot activate member %s.\n",
5794 iter
->text_version
);
5801 dprintf(" no valid super block on device list: err: %d %p\n",
5805 dprintf(" no more devices to examin\n");
5808 for (tmpdev
= devlist
; tmpdev
; tmpdev
= tmpdev
->next
) {
5809 if ((tmpdev
->used
== 1) && (tmpdev
->found
)) {
5811 if (count
< tmpdev
->found
)
5814 count
-= tmpdev
->found
;
5817 if (tmpdev
->used
== 1)
5822 st
->ss
->free_super(st
);
5828 count_volumes(char *hba
, int dpa
, int verbose
)
5830 struct md_list
*devlist
= NULL
;
5834 devlist
= get_devices(hba
);
5835 /* if no intel devices return zero volumes */
5836 if (devlist
== NULL
)
5839 count
= active_arrays_by_format("imsm", hba
, &devlist
, dpa
, verbose
);
5840 dprintf(" path: %s active arrays: %d\n", hba
, count
);
5841 if (devlist
== NULL
)
5845 count
+= count_volumes_list(devlist
,
5849 dprintf("found %d count: %d\n", found
, count
);
5852 dprintf("path: %s total number of volumes: %d\n", hba
, count
);
5855 struct md_list
*dv
= devlist
;
5856 devlist
= devlist
->next
;
5863 static int imsm_default_chunk(const struct imsm_orom
*orom
)
5865 /* up to 512 if the plaform supports it, otherwise the platform max.
5866 * 128 if no platform detected
5868 int fs
= max(7, orom
? fls(orom
->sss
) : 0);
5870 return min(512, (1 << fs
));
5874 validate_geometry_imsm_orom(struct intel_super
*super
, int level
, int layout
,
5875 int raiddisks
, int *chunk
, unsigned long long size
, int verbose
)
5877 /* check/set platform and metadata limits/defaults */
5878 if (super
->orom
&& raiddisks
> super
->orom
->dpa
) {
5879 pr_vrb(": platform supports a maximum of %d disks per array\n",
5884 /* capabilities of OROM tested - copied from validate_geometry_imsm_volume */
5885 if (!is_raid_level_supported(super
->orom
, level
, raiddisks
)) {
5886 pr_vrb(": platform does not support raid%d with %d disk%s\n",
5887 level
, raiddisks
, raiddisks
> 1 ? "s" : "");
5891 if (chunk
&& (*chunk
== 0 || *chunk
== UnSet
))
5892 *chunk
= imsm_default_chunk(super
->orom
);
5894 if (super
->orom
&& chunk
&& !imsm_orom_has_chunk(super
->orom
, *chunk
)) {
5895 pr_vrb(": platform does not support a chunk size of: "
5900 if (layout
!= imsm_level_to_layout(level
)) {
5902 pr_vrb(": imsm raid 5 only supports the left-asymmetric layout\n");
5903 else if (level
== 10)
5904 pr_vrb(": imsm raid 10 only supports the n2 layout\n");
5906 pr_vrb(": imsm unknown layout %#x for this raid level %d\n",
5911 if (super
->orom
&& (super
->orom
->attr
& IMSM_OROM_ATTR_2TB
) == 0 && chunk
&&
5912 (calc_array_size(level
, raiddisks
, layout
, *chunk
, size
) >> 32) > 0) {
5913 pr_vrb(": platform does not support a volume size over 2TB\n");
5919 /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd
5920 * FIX ME add ahci details
5922 static int validate_geometry_imsm_volume(struct supertype
*st
, int level
,
5923 int layout
, int raiddisks
, int *chunk
,
5924 unsigned long long size
, char *dev
,
5925 unsigned long long *freesize
,
5929 struct intel_super
*super
= st
->sb
;
5930 struct imsm_super
*mpb
;
5932 unsigned long long pos
= 0;
5933 unsigned long long maxsize
;
5937 /* We must have the container info already read in. */
5941 mpb
= super
->anchor
;
5943 if (!validate_geometry_imsm_orom(super
, level
, layout
, raiddisks
, chunk
, size
, verbose
)) {
5944 pr_err("RAID gemetry validation failed. "
5945 "Cannot proceed with the action(s).\n");
5949 /* General test: make sure there is space for
5950 * 'raiddisks' device extents of size 'size' at a given
5953 unsigned long long minsize
= size
;
5954 unsigned long long start_offset
= MaxSector
;
5957 minsize
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
5958 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
5963 e
= get_extents(super
, dl
);
5966 unsigned long long esize
;
5967 esize
= e
[i
].start
- pos
;
5968 if (esize
>= minsize
)
5970 if (found
&& start_offset
== MaxSector
) {
5973 } else if (found
&& pos
!= start_offset
) {
5977 pos
= e
[i
].start
+ e
[i
].size
;
5979 } while (e
[i
-1].size
);
5984 if (dcnt
< raiddisks
) {
5986 pr_err("imsm: Not enough "
5987 "devices with space for this array "
5995 /* This device must be a member of the set */
5996 if (stat(dev
, &stb
) < 0)
5998 if ((S_IFMT
& stb
.st_mode
) != S_IFBLK
)
6000 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
6001 if (dl
->major
== (int)major(stb
.st_rdev
) &&
6002 dl
->minor
== (int)minor(stb
.st_rdev
))
6007 pr_err("%s is not in the "
6008 "same imsm set\n", dev
);
6010 } else if (super
->orom
&& dl
->index
< 0 && mpb
->num_raid_devs
) {
6011 /* If a volume is present then the current creation attempt
6012 * cannot incorporate new spares because the orom may not
6013 * understand this configuration (all member disks must be
6014 * members of each array in the container).
6016 pr_err("%s is a spare and a volume"
6017 " is already defined for this container\n", dev
);
6018 pr_err("The option-rom requires all member"
6019 " disks to be a member of all volumes\n");
6021 } else if (super
->orom
&& mpb
->num_raid_devs
> 0 &&
6022 mpb
->num_disks
!= raiddisks
) {
6023 pr_err("The option-rom requires all member"
6024 " disks to be a member of all volumes\n");
6028 /* retrieve the largest free space block */
6029 e
= get_extents(super
, dl
);
6034 unsigned long long esize
;
6036 esize
= e
[i
].start
- pos
;
6037 if (esize
>= maxsize
)
6039 pos
= e
[i
].start
+ e
[i
].size
;
6041 } while (e
[i
-1].size
);
6046 pr_err("unable to determine free space for: %s\n",
6050 if (maxsize
< size
) {
6052 pr_err("%s not enough space (%llu < %llu)\n",
6053 dev
, maxsize
, size
);
6057 /* count total number of extents for merge */
6059 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
6061 i
+= dl
->extent_cnt
;
6063 maxsize
= merge_extents(super
, i
);
6065 if (!check_env("IMSM_NO_PLATFORM") &&
6066 mpb
->num_raid_devs
> 0 && size
&& size
!= maxsize
) {
6067 pr_err("attempting to create a second "
6068 "volume with size less then remaining space. "
6073 if (maxsize
< size
|| maxsize
== 0) {
6076 pr_err("no free space"
6077 " left on device. Aborting...\n");
6079 pr_err("not enough space"
6080 " to create volume of given size"
6081 " (%llu < %llu). Aborting...\n",
6087 *freesize
= maxsize
;
6090 int count
= count_volumes(super
->hba
->path
,
6091 super
->orom
->dpa
, verbose
);
6092 if (super
->orom
->vphba
<= count
) {
6093 pr_vrb(": platform does not support more than %d raid volumes.\n",
6094 super
->orom
->vphba
);
6101 static int imsm_get_free_size(struct supertype
*st
, int raiddisks
,
6102 unsigned long long size
, int chunk
,
6103 unsigned long long *freesize
)
6105 struct intel_super
*super
= st
->sb
;
6106 struct imsm_super
*mpb
= super
->anchor
;
6111 unsigned long long maxsize
;
6112 unsigned long long minsize
;
6116 /* find the largest common start free region of the possible disks */
6120 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
6126 /* don't activate new spares if we are orom constrained
6127 * and there is already a volume active in the container
6129 if (super
->orom
&& dl
->index
< 0 && mpb
->num_raid_devs
)
6132 e
= get_extents(super
, dl
);
6135 for (i
= 1; e
[i
-1].size
; i
++)
6143 maxsize
= merge_extents(super
, extent_cnt
);
6147 minsize
= chunk
* 2;
6149 if (cnt
< raiddisks
||
6150 (super
->orom
&& used
&& used
!= raiddisks
) ||
6151 maxsize
< minsize
||
6153 pr_err("not enough devices with space to create array.\n");
6154 return 0; /* No enough free spaces large enough */
6165 if (!check_env("IMSM_NO_PLATFORM") &&
6166 mpb
->num_raid_devs
> 0 && size
&& size
!= maxsize
) {
6167 pr_err("attempting to create a second "
6168 "volume with size less then remaining space. "
6173 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
6175 dl
->raiddisk
= cnt
++;
6179 dprintf("imsm: imsm_get_free_size() returns : %llu\n", size
);
6184 static int reserve_space(struct supertype
*st
, int raiddisks
,
6185 unsigned long long size
, int chunk
,
6186 unsigned long long *freesize
)
6188 struct intel_super
*super
= st
->sb
;
6193 rv
= imsm_get_free_size(st
, raiddisks
, size
, chunk
, freesize
);
6196 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
6198 dl
->raiddisk
= cnt
++;
6205 static int validate_geometry_imsm(struct supertype
*st
, int level
, int layout
,
6206 int raiddisks
, int *chunk
, unsigned long long size
,
6207 char *dev
, unsigned long long *freesize
,
6215 * if given unused devices create a container
6216 * if given given devices in a container create a member volume
6218 if (level
== LEVEL_CONTAINER
) {
6219 /* Must be a fresh device to add to a container */
6220 return validate_geometry_imsm_container(st
, level
, layout
,
6222 chunk
?*chunk
:0, size
,
6229 struct intel_super
*super
= st
->sb
;
6230 if (!validate_geometry_imsm_orom(st
->sb
, level
, layout
,
6231 raiddisks
, chunk
, size
,
6234 /* we are being asked to automatically layout a
6235 * new volume based on the current contents of
6236 * the container. If the the parameters can be
6237 * satisfied reserve_space will record the disks,
6238 * start offset, and size of the volume to be
6239 * created. add_to_super and getinfo_super
6240 * detect when autolayout is in progress.
6242 /* assuming that freesize is always given when array is
6244 if (super
->orom
&& freesize
) {
6246 count
= count_volumes(super
->hba
->path
,
6247 super
->orom
->dpa
, verbose
);
6248 if (super
->orom
->vphba
<= count
) {
6249 pr_vrb(": platform does not support more"
6250 " than %d raid volumes.\n",
6251 super
->orom
->vphba
);
6256 return reserve_space(st
, raiddisks
, size
,
6257 chunk
?*chunk
:0, freesize
);
6262 /* creating in a given container */
6263 return validate_geometry_imsm_volume(st
, level
, layout
,
6264 raiddisks
, chunk
, size
,
6265 dev
, freesize
, verbose
);
6268 /* This device needs to be a device in an 'imsm' container */
6269 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
6272 pr_err("Cannot create this array on device %s\n",
6277 if (errno
!= EBUSY
|| (fd
= open(dev
, O_RDONLY
, 0)) < 0) {
6279 pr_err("Cannot open %s: %s\n",
6280 dev
, strerror(errno
));
6283 /* Well, it is in use by someone, maybe an 'imsm' container. */
6284 cfd
= open_container(fd
);
6288 pr_err("Cannot use %s: It is busy\n",
6292 sra
= sysfs_read(cfd
, 0, GET_VERSION
);
6293 if (sra
&& sra
->array
.major_version
== -1 &&
6294 strcmp(sra
->text_version
, "imsm") == 0)
6298 /* This is a member of a imsm container. Load the container
6299 * and try to create a volume
6301 struct intel_super
*super
;
6303 if (load_super_imsm_all(st
, cfd
, (void **) &super
, NULL
, NULL
, 1) == 0) {
6305 st
->container_dev
= fd2devnum(cfd
);
6307 return validate_geometry_imsm_volume(st
, level
, layout
,
6316 pr_err("failed container membership check\n");
6322 static void default_geometry_imsm(struct supertype
*st
, int *level
, int *layout
, int *chunk
)
6324 struct intel_super
*super
= st
->sb
;
6326 if (level
&& *level
== UnSet
)
6327 *level
= LEVEL_CONTAINER
;
6329 if (level
&& layout
&& *layout
== UnSet
)
6330 *layout
= imsm_level_to_layout(*level
);
6332 if (chunk
&& (*chunk
== UnSet
|| *chunk
== 0))
6333 *chunk
= imsm_default_chunk(super
->orom
);
6336 static void handle_missing(struct intel_super
*super
, struct imsm_dev
*dev
);
6338 static int kill_subarray_imsm(struct supertype
*st
)
6340 /* remove the subarray currently referenced by ->current_vol */
6342 struct intel_dev
**dp
;
6343 struct intel_super
*super
= st
->sb
;
6344 __u8 current_vol
= super
->current_vol
;
6345 struct imsm_super
*mpb
= super
->anchor
;
6347 if (super
->current_vol
< 0)
6349 super
->current_vol
= -1; /* invalidate subarray cursor */
6351 /* block deletions that would change the uuid of active subarrays
6353 * FIXME when immutable ids are available, but note that we'll
6354 * also need to fixup the invalidated/active subarray indexes in
6357 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
6360 if (i
< current_vol
)
6362 sprintf(subarray
, "%u", i
);
6363 if (is_subarray_active(subarray
, st
->devname
)) {
6364 pr_err("deleting subarray-%d would change the UUID of active subarray-%d, aborting\n",
6371 if (st
->update_tail
) {
6372 struct imsm_update_kill_array
*u
= malloc(sizeof(*u
));
6376 u
->type
= update_kill_array
;
6377 u
->dev_idx
= current_vol
;
6378 append_metadata_update(st
, u
, sizeof(*u
));
6383 for (dp
= &super
->devlist
; *dp
;)
6384 if ((*dp
)->index
== current_vol
) {
6387 handle_missing(super
, (*dp
)->dev
);
6388 if ((*dp
)->index
> current_vol
)
6393 /* no more raid devices, all active components are now spares,
6394 * but of course failed are still failed
6396 if (--mpb
->num_raid_devs
== 0) {
6399 for (d
= super
->disks
; d
; d
= d
->next
)
6404 super
->updates_pending
++;
6409 static int update_subarray_imsm(struct supertype
*st
, char *subarray
,
6410 char *update
, struct mddev_ident
*ident
)
6412 /* update the subarray currently referenced by ->current_vol */
6413 struct intel_super
*super
= st
->sb
;
6414 struct imsm_super
*mpb
= super
->anchor
;
6416 if (strcmp(update
, "name") == 0) {
6417 char *name
= ident
->name
;
6421 if (is_subarray_active(subarray
, st
->devname
)) {
6422 pr_err("Unable to update name of active subarray\n");
6426 if (!check_name(super
, name
, 0))
6429 vol
= strtoul(subarray
, &ep
, 10);
6430 if (*ep
!= '\0' || vol
>= super
->anchor
->num_raid_devs
)
6433 if (st
->update_tail
) {
6434 struct imsm_update_rename_array
*u
= malloc(sizeof(*u
));
6438 u
->type
= update_rename_array
;
6440 snprintf((char *) u
->name
, MAX_RAID_SERIAL_LEN
, "%s", name
);
6441 append_metadata_update(st
, u
, sizeof(*u
));
6443 struct imsm_dev
*dev
;
6446 dev
= get_imsm_dev(super
, vol
);
6447 snprintf((char *) dev
->volume
, MAX_RAID_SERIAL_LEN
, "%s", name
);
6448 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
6449 dev
= get_imsm_dev(super
, i
);
6450 handle_missing(super
, dev
);
6452 super
->updates_pending
++;
6459 #endif /* MDASSEMBLE */
6461 static int is_gen_migration(struct imsm_dev
*dev
)
6466 if (!dev
->vol
.migr_state
)
6469 if (migr_type(dev
) == MIGR_GEN_MIGR
)
6475 static int is_rebuilding(struct imsm_dev
*dev
)
6477 struct imsm_map
*migr_map
;
6479 if (!dev
->vol
.migr_state
)
6482 if (migr_type(dev
) != MIGR_REBUILD
)
6485 migr_map
= get_imsm_map(dev
, MAP_1
);
6487 if (migr_map
->map_state
== IMSM_T_STATE_DEGRADED
)
6494 static int is_initializing(struct imsm_dev
*dev
)
6496 struct imsm_map
*migr_map
;
6498 if (!dev
->vol
.migr_state
)
6501 if (migr_type(dev
) != MIGR_INIT
)
6504 migr_map
= get_imsm_map(dev
, MAP_1
);
6506 if (migr_map
->map_state
== IMSM_T_STATE_UNINITIALIZED
)
6513 static void update_recovery_start(struct intel_super
*super
,
6514 struct imsm_dev
*dev
,
6515 struct mdinfo
*array
)
6517 struct mdinfo
*rebuild
= NULL
;
6521 if (!is_rebuilding(dev
))
6524 /* Find the rebuild target, but punt on the dual rebuild case */
6525 for (d
= array
->devs
; d
; d
= d
->next
)
6526 if (d
->recovery_start
== 0) {
6533 /* (?) none of the disks are marked with
6534 * IMSM_ORD_REBUILD, so assume they are missing and the
6535 * disk_ord_tbl was not correctly updated
6537 dprintf("%s: failed to locate out-of-sync disk\n", __func__
);
6541 units
= __le32_to_cpu(dev
->vol
.curr_migr_unit
);
6542 rebuild
->recovery_start
= units
* blocks_per_migr_unit(super
, dev
);
6546 static int recover_backup_imsm(struct supertype
*st
, struct mdinfo
*info
);
6549 static struct mdinfo
*container_content_imsm(struct supertype
*st
, char *subarray
)
6551 /* Given a container loaded by load_super_imsm_all,
6552 * extract information about all the arrays into
6554 * If 'subarray' is given, just extract info about that array.
6556 * For each imsm_dev create an mdinfo, fill it in,
6557 * then look for matching devices in super->disks
6558 * and create appropriate device mdinfo.
6560 struct intel_super
*super
= st
->sb
;
6561 struct imsm_super
*mpb
= super
->anchor
;
6562 struct mdinfo
*rest
= NULL
;
6566 int spare_disks
= 0;
6568 /* do not assemble arrays when not all attributes are supported */
6569 if (imsm_check_attributes(mpb
->attributes
) == 0) {
6571 pr_err("Unsupported attributes in IMSM metadata."
6572 "Arrays activation is blocked.\n");
6575 /* check for bad blocks */
6576 if (imsm_bbm_log_size(super
->anchor
)) {
6577 pr_err("BBM log found in IMSM metadata."
6578 "Arrays activation is blocked.\n");
6583 /* count spare devices, not used in maps
6585 for (d
= super
->disks
; d
; d
= d
->next
)
6589 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
6590 struct imsm_dev
*dev
;
6591 struct imsm_map
*map
;
6592 struct imsm_map
*map2
;
6593 struct mdinfo
*this;
6601 (i
!= strtoul(subarray
, &ep
, 10) || *ep
!= '\0'))
6604 dev
= get_imsm_dev(super
, i
);
6605 map
= get_imsm_map(dev
, MAP_0
);
6606 map2
= get_imsm_map(dev
, MAP_1
);
6608 /* do not publish arrays that are in the middle of an
6609 * unsupported migration
6611 if (dev
->vol
.migr_state
&&
6612 (migr_type(dev
) == MIGR_STATE_CHANGE
)) {
6613 pr_err("cannot assemble volume '%.16s':"
6614 " unsupported migration in progress\n",
6618 /* do not publish arrays that are not support by controller's
6622 this = malloc(sizeof(*this));
6624 pr_err("failed to allocate %zu bytes\n",
6629 super
->current_vol
= i
;
6630 getinfo_super_imsm_volume(st
, this, NULL
);
6633 chunk
= __le16_to_cpu(map
->blocks_per_strip
) >> 1;
6634 /* mdadm does not support all metadata features- set the bit in all arrays state */
6635 if (!validate_geometry_imsm_orom(super
,
6636 get_imsm_raid_level(map
), /* RAID level */
6637 imsm_level_to_layout(get_imsm_raid_level(map
)),
6638 map
->num_members
, /* raid disks */
6639 &chunk
, join_u32(dev
->size_low
, dev
->size_high
),
6641 pr_err("IMSM RAID geometry validation"
6642 " failed. Array %s activation is blocked.\n",
6644 this->array
.state
|=
6645 (1<<MD_SB_BLOCK_CONTAINER_RESHAPE
) |
6646 (1<<MD_SB_BLOCK_VOLUME
);
6650 /* if array has bad blocks, set suitable bit in all arrays state */
6652 this->array
.state
|=
6653 (1<<MD_SB_BLOCK_CONTAINER_RESHAPE
) |
6654 (1<<MD_SB_BLOCK_VOLUME
);
6656 for (slot
= 0 ; slot
< map
->num_members
; slot
++) {
6657 unsigned long long recovery_start
;
6658 struct mdinfo
*info_d
;
6665 idx
= get_imsm_disk_idx(dev
, slot
, MAP_0
);
6666 ord
= get_imsm_ord_tbl_ent(dev
, slot
, MAP_X
);
6667 for (d
= super
->disks
; d
; d
= d
->next
)
6668 if (d
->index
== idx
)
6671 recovery_start
= MaxSector
;
6674 if (d
&& is_failed(&d
->disk
))
6676 if (ord
& IMSM_ORD_REBUILD
)
6680 * if we skip some disks the array will be assmebled degraded;
6681 * reset resync start to avoid a dirty-degraded
6682 * situation when performing the intial sync
6684 * FIXME handle dirty degraded
6686 if ((skip
|| recovery_start
== 0) && !dev
->vol
.dirty
)
6687 this->resync_start
= MaxSector
;
6691 info_d
= calloc(1, sizeof(*info_d
));
6693 pr_err("failed to allocate disk"
6694 " for volume %.16s\n", dev
->volume
);
6695 info_d
= this->devs
;
6697 struct mdinfo
*d
= info_d
->next
;
6706 info_d
->next
= this->devs
;
6707 this->devs
= info_d
;
6709 info_d
->disk
.number
= d
->index
;
6710 info_d
->disk
.major
= d
->major
;
6711 info_d
->disk
.minor
= d
->minor
;
6712 info_d
->disk
.raid_disk
= slot
;
6713 info_d
->recovery_start
= recovery_start
;
6715 if (slot
< map2
->num_members
)
6716 info_d
->disk
.state
= (1 << MD_DISK_ACTIVE
);
6718 this->array
.spare_disks
++;
6720 if (slot
< map
->num_members
)
6721 info_d
->disk
.state
= (1 << MD_DISK_ACTIVE
);
6723 this->array
.spare_disks
++;
6725 if (info_d
->recovery_start
== MaxSector
)
6726 this->array
.working_disks
++;
6728 info_d
->events
= __le32_to_cpu(mpb
->generation_num
);
6729 info_d
->data_offset
= pba_of_lba0(map
);
6730 info_d
->component_size
= blocks_per_member(map
);
6732 /* now that the disk list is up-to-date fixup recovery_start */
6733 update_recovery_start(super
, dev
, this);
6734 this->array
.spare_disks
+= spare_disks
;
6737 /* check for reshape */
6738 if (this->reshape_active
== 1)
6739 recover_backup_imsm(st
, this);
6748 static __u8
imsm_check_degraded(struct intel_super
*super
, struct imsm_dev
*dev
,
6749 int failed
, int look_in_map
)
6751 struct imsm_map
*map
;
6753 map
= get_imsm_map(dev
, look_in_map
);
6756 return map
->map_state
== IMSM_T_STATE_UNINITIALIZED
?
6757 IMSM_T_STATE_UNINITIALIZED
: IMSM_T_STATE_NORMAL
;
6759 switch (get_imsm_raid_level(map
)) {
6761 return IMSM_T_STATE_FAILED
;
6764 if (failed
< map
->num_members
)
6765 return IMSM_T_STATE_DEGRADED
;
6767 return IMSM_T_STATE_FAILED
;
6772 * check to see if any mirrors have failed, otherwise we
6773 * are degraded. Even numbered slots are mirrored on
6777 /* gcc -Os complains that this is unused */
6778 int insync
= insync
;
6780 for (i
= 0; i
< map
->num_members
; i
++) {
6781 __u32 ord
= get_imsm_ord_tbl_ent(dev
, i
, MAP_X
);
6782 int idx
= ord_to_idx(ord
);
6783 struct imsm_disk
*disk
;
6785 /* reset the potential in-sync count on even-numbered
6786 * slots. num_copies is always 2 for imsm raid10
6791 disk
= get_imsm_disk(super
, idx
);
6792 if (!disk
|| is_failed(disk
) || ord
& IMSM_ORD_REBUILD
)
6795 /* no in-sync disks left in this mirror the
6799 return IMSM_T_STATE_FAILED
;
6802 return IMSM_T_STATE_DEGRADED
;
6806 return IMSM_T_STATE_DEGRADED
;
6808 return IMSM_T_STATE_FAILED
;
6814 return map
->map_state
;
6817 static int imsm_count_failed(struct intel_super
*super
, struct imsm_dev
*dev
,
6822 struct imsm_disk
*disk
;
6823 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
6824 struct imsm_map
*prev
= get_imsm_map(dev
, MAP_1
);
6825 struct imsm_map
*map_for_loop
;
6830 /* at the beginning of migration we set IMSM_ORD_REBUILD on
6831 * disks that are being rebuilt. New failures are recorded to
6832 * map[0]. So we look through all the disks we started with and
6833 * see if any failures are still present, or if any new ones
6837 if (prev
&& (map
->num_members
< prev
->num_members
))
6838 map_for_loop
= prev
;
6840 for (i
= 0; i
< map_for_loop
->num_members
; i
++) {
6842 /* when MAP_X is passed both maps failures are counted
6845 ((look_in_map
== MAP_1
) || (look_in_map
== MAP_X
)) &&
6846 (i
< prev
->num_members
)) {
6847 ord
= __le32_to_cpu(prev
->disk_ord_tbl
[i
]);
6848 idx_1
= ord_to_idx(ord
);
6850 disk
= get_imsm_disk(super
, idx_1
);
6851 if (!disk
|| is_failed(disk
) || ord
& IMSM_ORD_REBUILD
)
6854 if (((look_in_map
== MAP_0
) || (look_in_map
== MAP_X
)) &&
6855 (i
< map
->num_members
)) {
6856 ord
= __le32_to_cpu(map
->disk_ord_tbl
[i
]);
6857 idx
= ord_to_idx(ord
);
6860 disk
= get_imsm_disk(super
, idx
);
6861 if (!disk
|| is_failed(disk
) ||
6862 ord
& IMSM_ORD_REBUILD
)
6872 static int imsm_open_new(struct supertype
*c
, struct active_array
*a
,
6875 struct intel_super
*super
= c
->sb
;
6876 struct imsm_super
*mpb
= super
->anchor
;
6878 if (atoi(inst
) >= mpb
->num_raid_devs
) {
6879 fprintf(stderr
, "%s: subarry index %d, out of range\n",
6880 __func__
, atoi(inst
));
6884 dprintf("imsm: open_new %s\n", inst
);
6885 a
->info
.container_member
= atoi(inst
);
6889 static int is_resyncing(struct imsm_dev
*dev
)
6891 struct imsm_map
*migr_map
;
6893 if (!dev
->vol
.migr_state
)
6896 if (migr_type(dev
) == MIGR_INIT
||
6897 migr_type(dev
) == MIGR_REPAIR
)
6900 if (migr_type(dev
) == MIGR_GEN_MIGR
)
6903 migr_map
= get_imsm_map(dev
, MAP_1
);
6905 if ((migr_map
->map_state
== IMSM_T_STATE_NORMAL
) &&
6906 (dev
->vol
.migr_type
!= MIGR_GEN_MIGR
))
6912 /* return true if we recorded new information */
6913 static int mark_failure(struct imsm_dev
*dev
, struct imsm_disk
*disk
, int idx
)
6917 struct imsm_map
*map
;
6918 char buf
[MAX_RAID_SERIAL_LEN
+3];
6919 unsigned int len
, shift
= 0;
6921 /* new failures are always set in map[0] */
6922 map
= get_imsm_map(dev
, MAP_0
);
6924 slot
= get_imsm_disk_slot(map
, idx
);
6928 ord
= __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
6929 if (is_failed(disk
) && (ord
& IMSM_ORD_REBUILD
))
6932 memcpy(buf
, disk
->serial
, MAX_RAID_SERIAL_LEN
);
6933 buf
[MAX_RAID_SERIAL_LEN
] = '\000';
6935 if ((len
= strlen(buf
)) >= MAX_RAID_SERIAL_LEN
)
6936 shift
= len
- MAX_RAID_SERIAL_LEN
+ 1;
6937 strncpy((char *)disk
->serial
, &buf
[shift
], MAX_RAID_SERIAL_LEN
);
6939 disk
->status
|= FAILED_DISK
;
6940 set_imsm_ord_tbl_ent(map
, slot
, idx
| IMSM_ORD_REBUILD
);
6941 /* mark failures in second map if second map exists and this disk
6943 * This is valid for migration, initialization and rebuild
6945 if (dev
->vol
.migr_state
) {
6946 struct imsm_map
*map2
= get_imsm_map(dev
, MAP_1
);
6947 int slot2
= get_imsm_disk_slot(map2
, idx
);
6949 if ((slot2
< map2
->num_members
) &&
6951 set_imsm_ord_tbl_ent(map2
, slot2
,
6952 idx
| IMSM_ORD_REBUILD
);
6954 if (map
->failed_disk_num
== 0xff)
6955 map
->failed_disk_num
= slot
;
6959 static void mark_missing(struct imsm_dev
*dev
, struct imsm_disk
*disk
, int idx
)
6961 mark_failure(dev
, disk
, idx
);
6963 if (disk
->scsi_id
== __cpu_to_le32(~(__u32
)0))
6966 disk
->scsi_id
= __cpu_to_le32(~(__u32
)0);
6967 memmove(&disk
->serial
[0], &disk
->serial
[1], MAX_RAID_SERIAL_LEN
- 1);
6970 static void handle_missing(struct intel_super
*super
, struct imsm_dev
*dev
)
6974 if (!super
->missing
)
6977 dprintf("imsm: mark missing\n");
6978 /* end process for initialization and rebuild only
6980 if (is_gen_migration(dev
) == 0) {
6984 failed
= imsm_count_failed(super
, dev
, MAP_0
);
6985 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
6987 end_migration(dev
, super
, map_state
);
6989 for (dl
= super
->missing
; dl
; dl
= dl
->next
)
6990 mark_missing(dev
, &dl
->disk
, dl
->index
);
6991 super
->updates_pending
++;
6994 static unsigned long long imsm_set_array_size(struct imsm_dev
*dev
,
6997 int used_disks
= imsm_num_data_members(dev
, MAP_0
);
6998 unsigned long long array_blocks
;
6999 struct imsm_map
*map
;
7001 if (used_disks
== 0) {
7002 /* when problems occures
7003 * return current array_blocks value
7005 array_blocks
= __le32_to_cpu(dev
->size_high
);
7006 array_blocks
= array_blocks
<< 32;
7007 array_blocks
+= __le32_to_cpu(dev
->size_low
);
7009 return array_blocks
;
7012 /* set array size in metadata
7014 if (new_size
<= 0) {
7015 /* OLCE size change is caused by added disks
7017 map
= get_imsm_map(dev
, MAP_0
);
7018 array_blocks
= blocks_per_member(map
) * used_disks
;
7020 /* Online Volume Size Change
7021 * Using available free space
7023 array_blocks
= new_size
;
7026 /* round array size down to closest MB
7028 array_blocks
= (array_blocks
>> SECT_PER_MB_SHIFT
) << SECT_PER_MB_SHIFT
;
7029 dev
->size_low
= __cpu_to_le32((__u32
)array_blocks
);
7030 dev
->size_high
= __cpu_to_le32((__u32
)(array_blocks
>> 32));
7032 return array_blocks
;
7035 static void imsm_set_disk(struct active_array
*a
, int n
, int state
);
7037 static void imsm_progress_container_reshape(struct intel_super
*super
)
7039 /* if no device has a migr_state, but some device has a
7040 * different number of members than the previous device, start
7041 * changing the number of devices in this device to match
7044 struct imsm_super
*mpb
= super
->anchor
;
7045 int prev_disks
= -1;
7049 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
7050 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
7051 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7052 struct imsm_map
*map2
;
7053 int prev_num_members
;
7055 if (dev
->vol
.migr_state
)
7058 if (prev_disks
== -1)
7059 prev_disks
= map
->num_members
;
7060 if (prev_disks
== map
->num_members
)
7063 /* OK, this array needs to enter reshape mode.
7064 * i.e it needs a migr_state
7067 copy_map_size
= sizeof_imsm_map(map
);
7068 prev_num_members
= map
->num_members
;
7069 map
->num_members
= prev_disks
;
7070 dev
->vol
.migr_state
= 1;
7071 dev
->vol
.curr_migr_unit
= 0;
7072 set_migr_type(dev
, MIGR_GEN_MIGR
);
7073 for (i
= prev_num_members
;
7074 i
< map
->num_members
; i
++)
7075 set_imsm_ord_tbl_ent(map
, i
, i
);
7076 map2
= get_imsm_map(dev
, MAP_1
);
7077 /* Copy the current map */
7078 memcpy(map2
, map
, copy_map_size
);
7079 map2
->num_members
= prev_num_members
;
7081 imsm_set_array_size(dev
, -1);
7082 super
->clean_migration_record_by_mdmon
= 1;
7083 super
->updates_pending
++;
7087 /* Handle dirty -> clean transititions, resync and reshape. Degraded and rebuild
7088 * states are handled in imsm_set_disk() with one exception, when a
7089 * resync is stopped due to a new failure this routine will set the
7090 * 'degraded' state for the array.
7092 static int imsm_set_array_state(struct active_array
*a
, int consistent
)
7094 int inst
= a
->info
.container_member
;
7095 struct intel_super
*super
= a
->container
->sb
;
7096 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
7097 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7098 int failed
= imsm_count_failed(super
, dev
, MAP_0
);
7099 __u8 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
7100 __u32 blocks_per_unit
;
7102 if (dev
->vol
.migr_state
&&
7103 dev
->vol
.migr_type
== MIGR_GEN_MIGR
) {
7104 /* array state change is blocked due to reshape action
7106 * - abort the reshape (if last_checkpoint is 0 and action!= reshape)
7107 * - finish the reshape (if last_checkpoint is big and action != reshape)
7108 * - update curr_migr_unit
7110 if (a
->curr_action
== reshape
) {
7111 /* still reshaping, maybe update curr_migr_unit */
7112 goto mark_checkpoint
;
7114 if (a
->last_checkpoint
== 0 && a
->prev_action
== reshape
) {
7115 /* for some reason we aborted the reshape.
7117 * disable automatic metadata rollback
7118 * user action is required to recover process
7121 struct imsm_map
*map2
=
7122 get_imsm_map(dev
, MAP_1
);
7123 dev
->vol
.migr_state
= 0;
7124 set_migr_type(dev
, 0);
7125 dev
->vol
.curr_migr_unit
= 0;
7127 sizeof_imsm_map(map2
));
7128 super
->updates_pending
++;
7131 if (a
->last_checkpoint
>= a
->info
.component_size
) {
7132 unsigned long long array_blocks
;
7136 used_disks
= imsm_num_data_members(dev
, MAP_0
);
7137 if (used_disks
> 0) {
7139 blocks_per_member(map
) *
7141 /* round array size down to closest MB
7143 array_blocks
= (array_blocks
7144 >> SECT_PER_MB_SHIFT
)
7145 << SECT_PER_MB_SHIFT
;
7146 a
->info
.custom_array_size
= array_blocks
;
7147 /* encourage manager to update array
7151 a
->check_reshape
= 1;
7153 /* finalize online capacity expansion/reshape */
7154 for (mdi
= a
->info
.devs
; mdi
; mdi
= mdi
->next
)
7156 mdi
->disk
.raid_disk
,
7159 imsm_progress_container_reshape(super
);
7164 /* before we activate this array handle any missing disks */
7165 if (consistent
== 2)
7166 handle_missing(super
, dev
);
7168 if (consistent
== 2 &&
7169 (!is_resync_complete(&a
->info
) ||
7170 map_state
!= IMSM_T_STATE_NORMAL
||
7171 dev
->vol
.migr_state
))
7174 if (is_resync_complete(&a
->info
)) {
7175 /* complete intialization / resync,
7176 * recovery and interrupted recovery is completed in
7179 if (is_resyncing(dev
)) {
7180 dprintf("imsm: mark resync done\n");
7181 end_migration(dev
, super
, map_state
);
7182 super
->updates_pending
++;
7183 a
->last_checkpoint
= 0;
7185 } else if ((!is_resyncing(dev
) && !failed
) &&
7186 (imsm_reshape_blocks_arrays_changes(super
) == 0)) {
7187 /* mark the start of the init process if nothing is failed */
7188 dprintf("imsm: mark resync start\n");
7189 if (map
->map_state
== IMSM_T_STATE_UNINITIALIZED
)
7190 migrate(dev
, super
, IMSM_T_STATE_NORMAL
, MIGR_INIT
);
7192 migrate(dev
, super
, IMSM_T_STATE_NORMAL
, MIGR_REPAIR
);
7193 super
->updates_pending
++;
7197 /* skip checkpointing for general migration,
7198 * it is controlled in mdadm
7200 if (is_gen_migration(dev
))
7201 goto skip_mark_checkpoint
;
7203 /* check if we can update curr_migr_unit from resync_start, recovery_start */
7204 blocks_per_unit
= blocks_per_migr_unit(super
, dev
);
7205 if (blocks_per_unit
) {
7209 units
= a
->last_checkpoint
/ blocks_per_unit
;
7212 /* check that we did not overflow 32-bits, and that
7213 * curr_migr_unit needs updating
7215 if (units32
== units
&&
7217 __le32_to_cpu(dev
->vol
.curr_migr_unit
) != units32
) {
7218 dprintf("imsm: mark checkpoint (%u)\n", units32
);
7219 dev
->vol
.curr_migr_unit
= __cpu_to_le32(units32
);
7220 super
->updates_pending
++;
7224 skip_mark_checkpoint
:
7225 /* mark dirty / clean */
7226 if (dev
->vol
.dirty
!= !consistent
) {
7227 dprintf("imsm: mark '%s'\n", consistent
? "clean" : "dirty");
7232 super
->updates_pending
++;
7238 static void imsm_set_disk(struct active_array
*a
, int n
, int state
)
7240 int inst
= a
->info
.container_member
;
7241 struct intel_super
*super
= a
->container
->sb
;
7242 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
7243 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7244 struct imsm_disk
*disk
;
7246 int recovery_not_finished
= 0;
7251 if (n
> map
->num_members
)
7252 fprintf(stderr
, "imsm: set_disk %d out of range 0..%d\n",
7253 n
, map
->num_members
- 1);
7258 dprintf("imsm: set_disk %d:%x\n", n
, state
);
7260 ord
= get_imsm_ord_tbl_ent(dev
, n
, MAP_0
);
7261 disk
= get_imsm_disk(super
, ord_to_idx(ord
));
7263 /* check for new failures */
7264 if (state
& DS_FAULTY
) {
7265 if (mark_failure(dev
, disk
, ord_to_idx(ord
)))
7266 super
->updates_pending
++;
7269 /* check if in_sync */
7270 if (state
& DS_INSYNC
&& ord
& IMSM_ORD_REBUILD
&& is_rebuilding(dev
)) {
7271 struct imsm_map
*migr_map
= get_imsm_map(dev
, MAP_1
);
7273 set_imsm_ord_tbl_ent(migr_map
, n
, ord_to_idx(ord
));
7274 super
->updates_pending
++;
7277 failed
= imsm_count_failed(super
, dev
, MAP_0
);
7278 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
7280 /* check if recovery complete, newly degraded, or failed */
7281 dprintf("imsm: Detected transition to state ");
7282 switch (map_state
) {
7283 case IMSM_T_STATE_NORMAL
: /* transition to normal state */
7284 dprintf("normal: ");
7285 if (is_rebuilding(dev
)) {
7286 dprintf("while rebuilding");
7287 /* check if recovery is really finished */
7288 for (mdi
= a
->info
.devs
; mdi
; mdi
= mdi
->next
)
7289 if (mdi
->recovery_start
!= MaxSector
) {
7290 recovery_not_finished
= 1;
7293 if (recovery_not_finished
) {
7294 dprintf("\nimsm: Rebuild has not finished yet, "
7295 "state not changed");
7296 if (a
->last_checkpoint
< mdi
->recovery_start
) {
7297 a
->last_checkpoint
= mdi
->recovery_start
;
7298 super
->updates_pending
++;
7302 end_migration(dev
, super
, map_state
);
7303 map
= get_imsm_map(dev
, MAP_0
);
7304 map
->failed_disk_num
= ~0;
7305 super
->updates_pending
++;
7306 a
->last_checkpoint
= 0;
7309 if (is_gen_migration(dev
)) {
7310 dprintf("while general migration");
7311 if (a
->last_checkpoint
>= a
->info
.component_size
)
7312 end_migration(dev
, super
, map_state
);
7314 map
->map_state
= map_state
;
7315 map
= get_imsm_map(dev
, MAP_0
);
7316 map
->failed_disk_num
= ~0;
7317 super
->updates_pending
++;
7321 case IMSM_T_STATE_DEGRADED
: /* transition to degraded state */
7322 dprintf("degraded: ");
7323 if ((map
->map_state
!= map_state
) &&
7324 !dev
->vol
.migr_state
) {
7325 dprintf("mark degraded");
7326 map
->map_state
= map_state
;
7327 super
->updates_pending
++;
7328 a
->last_checkpoint
= 0;
7331 if (is_rebuilding(dev
)) {
7332 dprintf("while rebuilding.");
7333 if (map
->map_state
!= map_state
) {
7334 dprintf(" Map state change");
7335 end_migration(dev
, super
, map_state
);
7336 super
->updates_pending
++;
7340 if (is_gen_migration(dev
)) {
7341 dprintf("while general migration");
7342 if (a
->last_checkpoint
>= a
->info
.component_size
)
7343 end_migration(dev
, super
, map_state
);
7345 map
->map_state
= map_state
;
7346 manage_second_map(super
, dev
);
7348 super
->updates_pending
++;
7351 if (is_initializing(dev
)) {
7352 dprintf("while initialization.");
7353 map
->map_state
= map_state
;
7354 super
->updates_pending
++;
7358 case IMSM_T_STATE_FAILED
: /* transition to failed state */
7359 dprintf("failed: ");
7360 if (is_gen_migration(dev
)) {
7361 dprintf("while general migration");
7362 map
->map_state
= map_state
;
7363 super
->updates_pending
++;
7366 if (map
->map_state
!= map_state
) {
7367 dprintf("mark failed");
7368 end_migration(dev
, super
, map_state
);
7369 super
->updates_pending
++;
7370 a
->last_checkpoint
= 0;
7375 dprintf("state %i\n", map_state
);
7381 static int store_imsm_mpb(int fd
, struct imsm_super
*mpb
)
7384 __u32 mpb_size
= __le32_to_cpu(mpb
->mpb_size
);
7385 unsigned long long dsize
;
7386 unsigned long long sectors
;
7388 get_dev_size(fd
, NULL
, &dsize
);
7390 if (mpb_size
> 512) {
7391 /* -1 to account for anchor */
7392 sectors
= mpb_sectors(mpb
) - 1;
7394 /* write the extended mpb to the sectors preceeding the anchor */
7395 if (lseek64(fd
, dsize
- (512 * (2 + sectors
)), SEEK_SET
) < 0)
7398 if ((unsigned long long)write(fd
, buf
+ 512, 512 * sectors
)
7403 /* first block is stored on second to last sector of the disk */
7404 if (lseek64(fd
, dsize
- (512 * 2), SEEK_SET
) < 0)
7407 if (write(fd
, buf
, 512) != 512)
7413 static void imsm_sync_metadata(struct supertype
*container
)
7415 struct intel_super
*super
= container
->sb
;
7417 dprintf("sync metadata: %d\n", super
->updates_pending
);
7418 if (!super
->updates_pending
)
7421 write_super_imsm(container
, 0);
7423 super
->updates_pending
= 0;
7426 static struct dl
*imsm_readd(struct intel_super
*super
, int idx
, struct active_array
*a
)
7428 struct imsm_dev
*dev
= get_imsm_dev(super
, a
->info
.container_member
);
7429 int i
= get_imsm_disk_idx(dev
, idx
, MAP_X
);
7432 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
7436 if (dl
&& is_failed(&dl
->disk
))
7440 dprintf("%s: found %x:%x\n", __func__
, dl
->major
, dl
->minor
);
7445 static struct dl
*imsm_add_spare(struct intel_super
*super
, int slot
,
7446 struct active_array
*a
, int activate_new
,
7447 struct mdinfo
*additional_test_list
)
7449 struct imsm_dev
*dev
= get_imsm_dev(super
, a
->info
.container_member
);
7450 int idx
= get_imsm_disk_idx(dev
, slot
, MAP_X
);
7451 struct imsm_super
*mpb
= super
->anchor
;
7452 struct imsm_map
*map
;
7453 unsigned long long pos
;
7458 __u32 array_start
= 0;
7459 __u32 array_end
= 0;
7461 struct mdinfo
*test_list
;
7463 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
7464 /* If in this array, skip */
7465 for (d
= a
->info
.devs
; d
; d
= d
->next
)
7466 if (d
->state_fd
>= 0 &&
7467 d
->disk
.major
== dl
->major
&&
7468 d
->disk
.minor
== dl
->minor
) {
7469 dprintf("%x:%x already in array\n",
7470 dl
->major
, dl
->minor
);
7475 test_list
= additional_test_list
;
7477 if (test_list
->disk
.major
== dl
->major
&&
7478 test_list
->disk
.minor
== dl
->minor
) {
7479 dprintf("%x:%x already in additional test list\n",
7480 dl
->major
, dl
->minor
);
7483 test_list
= test_list
->next
;
7488 /* skip in use or failed drives */
7489 if (is_failed(&dl
->disk
) || idx
== dl
->index
||
7491 dprintf("%x:%x status (failed: %d index: %d)\n",
7492 dl
->major
, dl
->minor
, is_failed(&dl
->disk
), idx
);
7496 /* skip pure spares when we are looking for partially
7497 * assimilated drives
7499 if (dl
->index
== -1 && !activate_new
)
7502 /* Does this unused device have the requisite free space?
7503 * It needs to be able to cover all member volumes
7505 ex
= get_extents(super
, dl
);
7507 dprintf("cannot get extents\n");
7510 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
7511 dev
= get_imsm_dev(super
, i
);
7512 map
= get_imsm_map(dev
, MAP_0
);
7514 /* check if this disk is already a member of
7517 if (get_imsm_disk_slot(map
, dl
->index
) >= 0)
7523 array_start
= pba_of_lba0(map
);
7524 array_end
= array_start
+
7525 blocks_per_member(map
) - 1;
7528 /* check that we can start at pba_of_lba0 with
7529 * blocks_per_member of space
7531 if (array_start
>= pos
&& array_end
< ex
[j
].start
) {
7535 pos
= ex
[j
].start
+ ex
[j
].size
;
7537 } while (ex
[j
-1].size
);
7544 if (i
< mpb
->num_raid_devs
) {
7545 dprintf("%x:%x does not have %u to %u available\n",
7546 dl
->major
, dl
->minor
, array_start
, array_end
);
7557 static int imsm_rebuild_allowed(struct supertype
*cont
, int dev_idx
, int failed
)
7559 struct imsm_dev
*dev2
;
7560 struct imsm_map
*map
;
7566 dev2
= get_imsm_dev(cont
->sb
, dev_idx
);
7568 state
= imsm_check_degraded(cont
->sb
, dev2
, failed
, MAP_0
);
7569 if (state
== IMSM_T_STATE_FAILED
) {
7570 map
= get_imsm_map(dev2
, MAP_0
);
7573 for (slot
= 0; slot
< map
->num_members
; slot
++) {
7575 * Check if failed disks are deleted from intel
7576 * disk list or are marked to be deleted
7578 idx
= get_imsm_disk_idx(dev2
, slot
, MAP_X
);
7579 idisk
= get_imsm_dl_disk(cont
->sb
, idx
);
7581 * Do not rebuild the array if failed disks
7582 * from failed sub-array are not removed from
7586 is_failed(&idisk
->disk
) &&
7587 (idisk
->action
!= DISK_REMOVE
))
7595 static struct mdinfo
*imsm_activate_spare(struct active_array
*a
,
7596 struct metadata_update
**updates
)
7599 * Find a device with unused free space and use it to replace a
7600 * failed/vacant region in an array. We replace failed regions one a
7601 * array at a time. The result is that a new spare disk will be added
7602 * to the first failed array and after the monitor has finished
7603 * propagating failures the remainder will be consumed.
7605 * FIXME add a capability for mdmon to request spares from another
7609 struct intel_super
*super
= a
->container
->sb
;
7610 int inst
= a
->info
.container_member
;
7611 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
7612 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7613 int failed
= a
->info
.array
.raid_disks
;
7614 struct mdinfo
*rv
= NULL
;
7617 struct metadata_update
*mu
;
7619 struct imsm_update_activate_spare
*u
;
7624 for (d
= a
->info
.devs
; d
; d
= d
->next
) {
7625 if ((d
->curr_state
& DS_FAULTY
) &&
7627 /* wait for Removal to happen */
7629 if (d
->state_fd
>= 0)
7633 dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n",
7634 inst
, failed
, a
->info
.array
.raid_disks
, a
->info
.array
.level
);
7636 if (imsm_reshape_blocks_arrays_changes(super
))
7639 /* Cannot activate another spare if rebuild is in progress already
7641 if (is_rebuilding(dev
)) {
7642 dprintf("imsm: No spare activation allowed. "
7643 "Rebuild in progress already.\n");
7647 if (a
->info
.array
.level
== 4)
7648 /* No repair for takeovered array
7649 * imsm doesn't support raid4
7653 if (imsm_check_degraded(super
, dev
, failed
, MAP_0
) !=
7654 IMSM_T_STATE_DEGRADED
)
7658 * If there are any failed disks check state of the other volume.
7659 * Block rebuild if the another one is failed until failed disks
7660 * are removed from container.
7663 dprintf("found failed disks in %.*s, check if there another"
7664 "failed sub-array.\n",
7665 MAX_RAID_SERIAL_LEN
, dev
->volume
);
7666 /* check if states of the other volumes allow for rebuild */
7667 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
7669 allowed
= imsm_rebuild_allowed(a
->container
,
7677 /* For each slot, if it is not working, find a spare */
7678 for (i
= 0; i
< a
->info
.array
.raid_disks
; i
++) {
7679 for (d
= a
->info
.devs
; d
; d
= d
->next
)
7680 if (d
->disk
.raid_disk
== i
)
7682 dprintf("found %d: %p %x\n", i
, d
, d
?d
->curr_state
:0);
7683 if (d
&& (d
->state_fd
>= 0))
7687 * OK, this device needs recovery. Try to re-add the
7688 * previous occupant of this slot, if this fails see if
7689 * we can continue the assimilation of a spare that was
7690 * partially assimilated, finally try to activate a new
7693 dl
= imsm_readd(super
, i
, a
);
7695 dl
= imsm_add_spare(super
, i
, a
, 0, rv
);
7697 dl
= imsm_add_spare(super
, i
, a
, 1, rv
);
7701 /* found a usable disk with enough space */
7702 di
= malloc(sizeof(*di
));
7705 memset(di
, 0, sizeof(*di
));
7707 /* dl->index will be -1 in the case we are activating a
7708 * pristine spare. imsm_process_update() will create a
7709 * new index in this case. Once a disk is found to be
7710 * failed in all member arrays it is kicked from the
7713 di
->disk
.number
= dl
->index
;
7715 /* (ab)use di->devs to store a pointer to the device
7718 di
->devs
= (struct mdinfo
*) dl
;
7720 di
->disk
.raid_disk
= i
;
7721 di
->disk
.major
= dl
->major
;
7722 di
->disk
.minor
= dl
->minor
;
7724 di
->recovery_start
= 0;
7725 di
->data_offset
= pba_of_lba0(map
);
7726 di
->component_size
= a
->info
.component_size
;
7727 di
->container_member
= inst
;
7728 super
->random
= random32();
7732 dprintf("%x:%x to be %d at %llu\n", dl
->major
, dl
->minor
,
7733 i
, di
->data_offset
);
7737 /* No spares found */
7739 /* Now 'rv' has a list of devices to return.
7740 * Create a metadata_update record to update the
7741 * disk_ord_tbl for the array
7743 mu
= malloc(sizeof(*mu
));
7745 mu
->buf
= malloc(sizeof(struct imsm_update_activate_spare
) * num_spares
);
7746 if (mu
->buf
== NULL
) {
7753 struct mdinfo
*n
= rv
->next
;
7762 mu
->space_list
= NULL
;
7763 mu
->len
= sizeof(struct imsm_update_activate_spare
) * num_spares
;
7764 mu
->next
= *updates
;
7765 u
= (struct imsm_update_activate_spare
*) mu
->buf
;
7767 for (di
= rv
; di
; di
= di
->next
) {
7768 u
->type
= update_activate_spare
;
7769 u
->dl
= (struct dl
*) di
->devs
;
7771 u
->slot
= di
->disk
.raid_disk
;
7782 static int disks_overlap(struct intel_super
*super
, int idx
, struct imsm_update_create_array
*u
)
7784 struct imsm_dev
*dev
= get_imsm_dev(super
, idx
);
7785 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7786 struct imsm_map
*new_map
= get_imsm_map(&u
->dev
, MAP_0
);
7787 struct disk_info
*inf
= get_disk_info(u
);
7788 struct imsm_disk
*disk
;
7792 for (i
= 0; i
< map
->num_members
; i
++) {
7793 disk
= get_imsm_disk(super
, get_imsm_disk_idx(dev
, i
, MAP_X
));
7794 for (j
= 0; j
< new_map
->num_members
; j
++)
7795 if (serialcmp(disk
->serial
, inf
[j
].serial
) == 0)
7803 static struct dl
*get_disk_super(struct intel_super
*super
, int major
, int minor
)
7805 struct dl
*dl
= NULL
;
7806 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
7807 if ((dl
->major
== major
) && (dl
->minor
== minor
))
7812 static int remove_disk_super(struct intel_super
*super
, int major
, int minor
)
7814 struct dl
*prev
= NULL
;
7818 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
7819 if ((dl
->major
== major
) && (dl
->minor
== minor
)) {
7822 prev
->next
= dl
->next
;
7824 super
->disks
= dl
->next
;
7826 __free_imsm_disk(dl
);
7827 dprintf("%s: removed %x:%x\n",
7828 __func__
, major
, minor
);
7836 static void imsm_delete(struct intel_super
*super
, struct dl
**dlp
, unsigned index
);
7838 static int add_remove_disk_update(struct intel_super
*super
)
7840 int check_degraded
= 0;
7841 struct dl
*disk
= NULL
;
7842 /* add/remove some spares to/from the metadata/contrainer */
7843 while (super
->disk_mgmt_list
) {
7844 struct dl
*disk_cfg
;
7846 disk_cfg
= super
->disk_mgmt_list
;
7847 super
->disk_mgmt_list
= disk_cfg
->next
;
7848 disk_cfg
->next
= NULL
;
7850 if (disk_cfg
->action
== DISK_ADD
) {
7851 disk_cfg
->next
= super
->disks
;
7852 super
->disks
= disk_cfg
;
7854 dprintf("%s: added %x:%x\n",
7855 __func__
, disk_cfg
->major
,
7857 } else if (disk_cfg
->action
== DISK_REMOVE
) {
7858 dprintf("Disk remove action processed: %x.%x\n",
7859 disk_cfg
->major
, disk_cfg
->minor
);
7860 disk
= get_disk_super(super
,
7864 /* store action status */
7865 disk
->action
= DISK_REMOVE
;
7866 /* remove spare disks only */
7867 if (disk
->index
== -1) {
7868 remove_disk_super(super
,
7873 /* release allocate disk structure */
7874 __free_imsm_disk(disk_cfg
);
7877 return check_degraded
;
7881 static int apply_reshape_migration_update(struct imsm_update_reshape_migration
*u
,
7882 struct intel_super
*super
,
7885 struct intel_dev
*id
;
7886 void **tofree
= NULL
;
7889 dprintf("apply_reshape_migration_update()\n");
7890 if ((u
->subdev
< 0) ||
7892 dprintf("imsm: Error: Wrong subdev: %i\n", u
->subdev
);
7895 if ((space_list
== NULL
) || (*space_list
== NULL
)) {
7896 dprintf("imsm: Error: Memory is not allocated\n");
7900 for (id
= super
->devlist
; id
; id
= id
->next
) {
7901 if (id
->index
== (unsigned)u
->subdev
) {
7902 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->subdev
);
7903 struct imsm_map
*map
;
7904 struct imsm_dev
*new_dev
=
7905 (struct imsm_dev
*)*space_list
;
7906 struct imsm_map
*migr_map
= get_imsm_map(dev
, MAP_1
);
7908 struct dl
*new_disk
;
7910 if (new_dev
== NULL
)
7912 *space_list
= **space_list
;
7913 memcpy(new_dev
, dev
, sizeof_imsm_dev(dev
, 0));
7914 map
= get_imsm_map(new_dev
, MAP_0
);
7916 dprintf("imsm: Error: migration in progress");
7920 to_state
= map
->map_state
;
7921 if ((u
->new_level
== 5) && (map
->raid_level
== 0)) {
7923 /* this should not happen */
7924 if (u
->new_disks
[0] < 0) {
7925 map
->failed_disk_num
=
7926 map
->num_members
- 1;
7927 to_state
= IMSM_T_STATE_DEGRADED
;
7929 to_state
= IMSM_T_STATE_NORMAL
;
7931 migrate(new_dev
, super
, to_state
, MIGR_GEN_MIGR
);
7932 if (u
->new_level
> -1)
7933 map
->raid_level
= u
->new_level
;
7934 migr_map
= get_imsm_map(new_dev
, MAP_1
);
7935 if ((u
->new_level
== 5) &&
7936 (migr_map
->raid_level
== 0)) {
7937 int ord
= map
->num_members
- 1;
7938 migr_map
->num_members
--;
7939 if (u
->new_disks
[0] < 0)
7940 ord
|= IMSM_ORD_REBUILD
;
7941 set_imsm_ord_tbl_ent(map
,
7942 map
->num_members
- 1,
7946 tofree
= (void **)dev
;
7948 /* update chunk size
7950 if (u
->new_chunksize
> 0)
7951 map
->blocks_per_strip
=
7952 __cpu_to_le16(u
->new_chunksize
* 2);
7956 if ((u
->new_level
!= 5) ||
7957 (migr_map
->raid_level
!= 0) ||
7958 (migr_map
->raid_level
== map
->raid_level
))
7961 if (u
->new_disks
[0] >= 0) {
7964 new_disk
= get_disk_super(super
,
7965 major(u
->new_disks
[0]),
7966 minor(u
->new_disks
[0]));
7967 dprintf("imsm: new disk for reshape is: %i:%i "
7968 "(%p, index = %i)\n",
7969 major(u
->new_disks
[0]),
7970 minor(u
->new_disks
[0]),
7971 new_disk
, new_disk
->index
);
7972 if (new_disk
== NULL
)
7973 goto error_disk_add
;
7975 new_disk
->index
= map
->num_members
- 1;
7976 /* slot to fill in autolayout
7978 new_disk
->raiddisk
= new_disk
->index
;
7979 new_disk
->disk
.status
|= CONFIGURED_DISK
;
7980 new_disk
->disk
.status
&= ~SPARE_DISK
;
7982 goto error_disk_add
;
7985 *tofree
= *space_list
;
7986 /* calculate new size
7988 imsm_set_array_size(new_dev
, -1);
7995 *space_list
= tofree
;
7999 dprintf("Error: imsm: Cannot find disk.\n");
8003 static int apply_size_change_update(struct imsm_update_size_change
*u
,
8004 struct intel_super
*super
)
8006 struct intel_dev
*id
;
8009 dprintf("apply_size_change_update()\n");
8010 if ((u
->subdev
< 0) ||
8012 dprintf("imsm: Error: Wrong subdev: %i\n", u
->subdev
);
8016 for (id
= super
->devlist
; id
; id
= id
->next
) {
8017 if (id
->index
== (unsigned)u
->subdev
) {
8018 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->subdev
);
8019 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
8020 int used_disks
= imsm_num_data_members(dev
, MAP_0
);
8021 unsigned long long blocks_per_member
;
8023 /* calculate new size
8025 blocks_per_member
= u
->new_size
/ used_disks
;
8026 dprintf("imsm: apply_size_change_update(size: %llu, "
8027 "blocks per member: %llu)\n",
8028 u
->new_size
, blocks_per_member
);
8029 set_blocks_per_member(map
, blocks_per_member
);
8030 imsm_set_array_size(dev
, u
->new_size
);
8041 static int apply_update_activate_spare(struct imsm_update_activate_spare
*u
,
8042 struct intel_super
*super
,
8043 struct active_array
*active_array
)
8045 struct imsm_super
*mpb
= super
->anchor
;
8046 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->array
);
8047 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
8048 struct imsm_map
*migr_map
;
8049 struct active_array
*a
;
8050 struct imsm_disk
*disk
;
8057 int second_map_created
= 0;
8059 for (; u
; u
= u
->next
) {
8060 victim
= get_imsm_disk_idx(dev
, u
->slot
, MAP_X
);
8065 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
8070 fprintf(stderr
, "error: imsm_activate_spare passed "
8071 "an unknown disk (index: %d)\n",
8076 /* count failures (excluding rebuilds and the victim)
8077 * to determine map[0] state
8080 for (i
= 0; i
< map
->num_members
; i
++) {
8083 disk
= get_imsm_disk(super
,
8084 get_imsm_disk_idx(dev
, i
, MAP_X
));
8085 if (!disk
|| is_failed(disk
))
8089 /* adding a pristine spare, assign a new index */
8090 if (dl
->index
< 0) {
8091 dl
->index
= super
->anchor
->num_disks
;
8092 super
->anchor
->num_disks
++;
8095 disk
->status
|= CONFIGURED_DISK
;
8096 disk
->status
&= ~SPARE_DISK
;
8099 to_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
8100 if (!second_map_created
) {
8101 second_map_created
= 1;
8102 map
->map_state
= IMSM_T_STATE_DEGRADED
;
8103 migrate(dev
, super
, to_state
, MIGR_REBUILD
);
8105 map
->map_state
= to_state
;
8106 migr_map
= get_imsm_map(dev
, MAP_1
);
8107 set_imsm_ord_tbl_ent(map
, u
->slot
, dl
->index
);
8108 set_imsm_ord_tbl_ent(migr_map
, u
->slot
,
8109 dl
->index
| IMSM_ORD_REBUILD
);
8111 /* update the family_num to mark a new container
8112 * generation, being careful to record the existing
8113 * family_num in orig_family_num to clean up after
8114 * earlier mdadm versions that neglected to set it.
8116 if (mpb
->orig_family_num
== 0)
8117 mpb
->orig_family_num
= mpb
->family_num
;
8118 mpb
->family_num
+= super
->random
;
8120 /* count arrays using the victim in the metadata */
8122 for (a
= active_array
; a
; a
= a
->next
) {
8123 dev
= get_imsm_dev(super
, a
->info
.container_member
);
8124 map
= get_imsm_map(dev
, MAP_0
);
8126 if (get_imsm_disk_slot(map
, victim
) >= 0)
8130 /* delete the victim if it is no longer being
8136 /* We know that 'manager' isn't touching anything,
8137 * so it is safe to delete
8139 for (dlp
= &super
->disks
; *dlp
; dlp
= &(*dlp
)->next
)
8140 if ((*dlp
)->index
== victim
)
8143 /* victim may be on the missing list */
8145 for (dlp
= &super
->missing
; *dlp
;
8146 dlp
= &(*dlp
)->next
)
8147 if ((*dlp
)->index
== victim
)
8149 imsm_delete(super
, dlp
, victim
);
8156 static int apply_reshape_container_disks_update(struct imsm_update_reshape
*u
,
8157 struct intel_super
*super
,
8160 struct dl
*new_disk
;
8161 struct intel_dev
*id
;
8163 int delta_disks
= u
->new_raid_disks
- u
->old_raid_disks
;
8164 int disk_count
= u
->old_raid_disks
;
8165 void **tofree
= NULL
;
8166 int devices_to_reshape
= 1;
8167 struct imsm_super
*mpb
= super
->anchor
;
8169 unsigned int dev_id
;
8171 dprintf("imsm: apply_reshape_container_disks_update()\n");
8173 /* enable spares to use in array */
8174 for (i
= 0; i
< delta_disks
; i
++) {
8175 new_disk
= get_disk_super(super
,
8176 major(u
->new_disks
[i
]),
8177 minor(u
->new_disks
[i
]));
8178 dprintf("imsm: new disk for reshape is: %i:%i "
8179 "(%p, index = %i)\n",
8180 major(u
->new_disks
[i
]), minor(u
->new_disks
[i
]),
8181 new_disk
, new_disk
->index
);
8182 if ((new_disk
== NULL
) ||
8183 ((new_disk
->index
>= 0) &&
8184 (new_disk
->index
< u
->old_raid_disks
)))
8185 goto update_reshape_exit
;
8186 new_disk
->index
= disk_count
++;
8187 /* slot to fill in autolayout
8189 new_disk
->raiddisk
= new_disk
->index
;
8190 new_disk
->disk
.status
|=
8192 new_disk
->disk
.status
&= ~SPARE_DISK
;
8195 dprintf("imsm: volume set mpb->num_raid_devs = %i\n",
8196 mpb
->num_raid_devs
);
8197 /* manage changes in volume
8199 for (dev_id
= 0; dev_id
< mpb
->num_raid_devs
; dev_id
++) {
8200 void **sp
= *space_list
;
8201 struct imsm_dev
*newdev
;
8202 struct imsm_map
*newmap
, *oldmap
;
8204 for (id
= super
->devlist
; id
; id
= id
->next
) {
8205 if (id
->index
== dev_id
)
8214 /* Copy the dev, but not (all of) the map */
8215 memcpy(newdev
, id
->dev
, sizeof(*newdev
));
8216 oldmap
= get_imsm_map(id
->dev
, MAP_0
);
8217 newmap
= get_imsm_map(newdev
, MAP_0
);
8218 /* Copy the current map */
8219 memcpy(newmap
, oldmap
, sizeof_imsm_map(oldmap
));
8220 /* update one device only
8222 if (devices_to_reshape
) {
8223 dprintf("imsm: modifying subdev: %i\n",
8225 devices_to_reshape
--;
8226 newdev
->vol
.migr_state
= 1;
8227 newdev
->vol
.curr_migr_unit
= 0;
8228 set_migr_type(newdev
, MIGR_GEN_MIGR
);
8229 newmap
->num_members
= u
->new_raid_disks
;
8230 for (i
= 0; i
< delta_disks
; i
++) {
8231 set_imsm_ord_tbl_ent(newmap
,
8232 u
->old_raid_disks
+ i
,
8233 u
->old_raid_disks
+ i
);
8235 /* New map is correct, now need to save old map
8237 newmap
= get_imsm_map(newdev
, MAP_1
);
8238 memcpy(newmap
, oldmap
, sizeof_imsm_map(oldmap
));
8240 imsm_set_array_size(newdev
, -1);
8243 sp
= (void **)id
->dev
;
8248 /* Clear migration record */
8249 memset(super
->migr_rec
, 0, sizeof(struct migr_record
));
8252 *space_list
= tofree
;
8255 update_reshape_exit
:
8260 static int apply_takeover_update(struct imsm_update_takeover
*u
,
8261 struct intel_super
*super
,
8264 struct imsm_dev
*dev
= NULL
;
8265 struct intel_dev
*dv
;
8266 struct imsm_dev
*dev_new
;
8267 struct imsm_map
*map
;
8271 for (dv
= super
->devlist
; dv
; dv
= dv
->next
)
8272 if (dv
->index
== (unsigned int)u
->subarray
) {
8280 map
= get_imsm_map(dev
, MAP_0
);
8282 if (u
->direction
== R10_TO_R0
) {
8283 /* Number of failed disks must be half of initial disk number */
8284 if (imsm_count_failed(super
, dev
, MAP_0
) !=
8285 (map
->num_members
/ 2))
8288 /* iterate through devices to mark removed disks as spare */
8289 for (dm
= super
->disks
; dm
; dm
= dm
->next
) {
8290 if (dm
->disk
.status
& FAILED_DISK
) {
8291 int idx
= dm
->index
;
8292 /* update indexes on the disk list */
8293 /* FIXME this loop-with-the-loop looks wrong, I'm not convinced
8294 the index values will end up being correct.... NB */
8295 for (du
= super
->disks
; du
; du
= du
->next
)
8296 if (du
->index
> idx
)
8298 /* mark as spare disk */
8303 map
->num_members
= map
->num_members
/ 2;
8304 map
->map_state
= IMSM_T_STATE_NORMAL
;
8305 map
->num_domains
= 1;
8306 map
->raid_level
= 0;
8307 map
->failed_disk_num
= -1;
8310 if (u
->direction
== R0_TO_R10
) {
8312 /* update slots in current disk list */
8313 for (dm
= super
->disks
; dm
; dm
= dm
->next
) {
8317 /* create new *missing* disks */
8318 for (i
= 0; i
< map
->num_members
; i
++) {
8319 space
= *space_list
;
8322 *space_list
= *space
;
8324 memcpy(du
, super
->disks
, sizeof(*du
));
8328 du
->index
= (i
* 2) + 1;
8329 sprintf((char *)du
->disk
.serial
,
8330 " MISSING_%d", du
->index
);
8331 sprintf((char *)du
->serial
,
8332 "MISSING_%d", du
->index
);
8333 du
->next
= super
->missing
;
8334 super
->missing
= du
;
8336 /* create new dev and map */
8337 space
= *space_list
;
8340 *space_list
= *space
;
8341 dev_new
= (void *)space
;
8342 memcpy(dev_new
, dev
, sizeof(*dev
));
8343 /* update new map */
8344 map
= get_imsm_map(dev_new
, MAP_0
);
8345 map
->num_members
= map
->num_members
* 2;
8346 map
->map_state
= IMSM_T_STATE_DEGRADED
;
8347 map
->num_domains
= 2;
8348 map
->raid_level
= 1;
8349 /* replace dev<->dev_new */
8352 /* update disk order table */
8353 for (du
= super
->disks
; du
; du
= du
->next
)
8355 set_imsm_ord_tbl_ent(map
, du
->index
, du
->index
);
8356 for (du
= super
->missing
; du
; du
= du
->next
)
8357 if (du
->index
>= 0) {
8358 set_imsm_ord_tbl_ent(map
, du
->index
, du
->index
);
8359 mark_missing(dv
->dev
, &du
->disk
, du
->index
);
8365 static void imsm_process_update(struct supertype
*st
,
8366 struct metadata_update
*update
)
8369 * crack open the metadata_update envelope to find the update record
8370 * update can be one of:
8371 * update_reshape_container_disks - all the arrays in the container
8372 * are being reshaped to have more devices. We need to mark
8373 * the arrays for general migration and convert selected spares
8374 * into active devices.
8375 * update_activate_spare - a spare device has replaced a failed
8376 * device in an array, update the disk_ord_tbl. If this disk is
8377 * present in all member arrays then also clear the SPARE_DISK
8379 * update_create_array
8381 * update_rename_array
8382 * update_add_remove_disk
8384 struct intel_super
*super
= st
->sb
;
8385 struct imsm_super
*mpb
;
8386 enum imsm_update_type type
= *(enum imsm_update_type
*) update
->buf
;
8388 /* update requires a larger buf but the allocation failed */
8389 if (super
->next_len
&& !super
->next_buf
) {
8390 super
->next_len
= 0;
8394 if (super
->next_buf
) {
8395 memcpy(super
->next_buf
, super
->buf
, super
->len
);
8397 super
->len
= super
->next_len
;
8398 super
->buf
= super
->next_buf
;
8400 super
->next_len
= 0;
8401 super
->next_buf
= NULL
;
8404 mpb
= super
->anchor
;
8407 case update_general_migration_checkpoint
: {
8408 struct intel_dev
*id
;
8409 struct imsm_update_general_migration_checkpoint
*u
=
8410 (void *)update
->buf
;
8412 dprintf("imsm: process_update() "
8413 "for update_general_migration_checkpoint called\n");
8415 /* find device under general migration */
8416 for (id
= super
->devlist
; id
; id
= id
->next
) {
8417 if (is_gen_migration(id
->dev
)) {
8418 id
->dev
->vol
.curr_migr_unit
=
8419 __cpu_to_le32(u
->curr_migr_unit
);
8420 super
->updates_pending
++;
8425 case update_takeover
: {
8426 struct imsm_update_takeover
*u
= (void *)update
->buf
;
8427 if (apply_takeover_update(u
, super
, &update
->space_list
)) {
8428 imsm_update_version_info(super
);
8429 super
->updates_pending
++;
8434 case update_reshape_container_disks
: {
8435 struct imsm_update_reshape
*u
= (void *)update
->buf
;
8436 if (apply_reshape_container_disks_update(
8437 u
, super
, &update
->space_list
))
8438 super
->updates_pending
++;
8441 case update_reshape_migration
: {
8442 struct imsm_update_reshape_migration
*u
= (void *)update
->buf
;
8443 if (apply_reshape_migration_update(
8444 u
, super
, &update
->space_list
))
8445 super
->updates_pending
++;
8448 case update_size_change
: {
8449 struct imsm_update_size_change
*u
= (void *)update
->buf
;
8450 if (apply_size_change_update(u
, super
))
8451 super
->updates_pending
++;
8454 case update_activate_spare
: {
8455 struct imsm_update_activate_spare
*u
= (void *) update
->buf
;
8456 if (apply_update_activate_spare(u
, super
, st
->arrays
))
8457 super
->updates_pending
++;
8460 case update_create_array
: {
8461 /* someone wants to create a new array, we need to be aware of
8462 * a few races/collisions:
8463 * 1/ 'Create' called by two separate instances of mdadm
8464 * 2/ 'Create' versus 'activate_spare': mdadm has chosen
8465 * devices that have since been assimilated via
8467 * In the event this update can not be carried out mdadm will
8468 * (FIX ME) notice that its update did not take hold.
8470 struct imsm_update_create_array
*u
= (void *) update
->buf
;
8471 struct intel_dev
*dv
;
8472 struct imsm_dev
*dev
;
8473 struct imsm_map
*map
, *new_map
;
8474 unsigned long long start
, end
;
8475 unsigned long long new_start
, new_end
;
8477 struct disk_info
*inf
;
8480 /* handle racing creates: first come first serve */
8481 if (u
->dev_idx
< mpb
->num_raid_devs
) {
8482 dprintf("%s: subarray %d already defined\n",
8483 __func__
, u
->dev_idx
);
8487 /* check update is next in sequence */
8488 if (u
->dev_idx
!= mpb
->num_raid_devs
) {
8489 dprintf("%s: can not create array %d expected index %d\n",
8490 __func__
, u
->dev_idx
, mpb
->num_raid_devs
);
8494 new_map
= get_imsm_map(&u
->dev
, MAP_0
);
8495 new_start
= pba_of_lba0(new_map
);
8496 new_end
= new_start
+ blocks_per_member(new_map
);
8497 inf
= get_disk_info(u
);
8499 /* handle activate_spare versus create race:
8500 * check to make sure that overlapping arrays do not include
8503 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
8504 dev
= get_imsm_dev(super
, i
);
8505 map
= get_imsm_map(dev
, MAP_0
);
8506 start
= pba_of_lba0(map
);
8507 end
= start
+ blocks_per_member(map
);
8508 if ((new_start
>= start
&& new_start
<= end
) ||
8509 (start
>= new_start
&& start
<= new_end
))
8514 if (disks_overlap(super
, i
, u
)) {
8515 dprintf("%s: arrays overlap\n", __func__
);
8520 /* check that prepare update was successful */
8521 if (!update
->space
) {
8522 dprintf("%s: prepare update failed\n", __func__
);
8526 /* check that all disks are still active before committing
8527 * changes. FIXME: could we instead handle this by creating a
8528 * degraded array? That's probably not what the user expects,
8529 * so better to drop this update on the floor.
8531 for (i
= 0; i
< new_map
->num_members
; i
++) {
8532 dl
= serial_to_dl(inf
[i
].serial
, super
);
8534 dprintf("%s: disk disappeared\n", __func__
);
8539 super
->updates_pending
++;
8541 /* convert spares to members and fixup ord_tbl */
8542 for (i
= 0; i
< new_map
->num_members
; i
++) {
8543 dl
= serial_to_dl(inf
[i
].serial
, super
);
8544 if (dl
->index
== -1) {
8545 dl
->index
= mpb
->num_disks
;
8547 dl
->disk
.status
|= CONFIGURED_DISK
;
8548 dl
->disk
.status
&= ~SPARE_DISK
;
8550 set_imsm_ord_tbl_ent(new_map
, i
, dl
->index
);
8555 update
->space
= NULL
;
8556 imsm_copy_dev(dev
, &u
->dev
);
8557 dv
->index
= u
->dev_idx
;
8558 dv
->next
= super
->devlist
;
8559 super
->devlist
= dv
;
8560 mpb
->num_raid_devs
++;
8562 imsm_update_version_info(super
);
8565 /* mdmon knows how to release update->space, but not
8566 * ((struct intel_dev *) update->space)->dev
8568 if (update
->space
) {
8574 case update_kill_array
: {
8575 struct imsm_update_kill_array
*u
= (void *) update
->buf
;
8576 int victim
= u
->dev_idx
;
8577 struct active_array
*a
;
8578 struct intel_dev
**dp
;
8579 struct imsm_dev
*dev
;
8581 /* sanity check that we are not affecting the uuid of
8582 * active arrays, or deleting an active array
8584 * FIXME when immutable ids are available, but note that
8585 * we'll also need to fixup the invalidated/active
8586 * subarray indexes in mdstat
8588 for (a
= st
->arrays
; a
; a
= a
->next
)
8589 if (a
->info
.container_member
>= victim
)
8591 /* by definition if mdmon is running at least one array
8592 * is active in the container, so checking
8593 * mpb->num_raid_devs is just extra paranoia
8595 dev
= get_imsm_dev(super
, victim
);
8596 if (a
|| !dev
|| mpb
->num_raid_devs
== 1) {
8597 dprintf("failed to delete subarray-%d\n", victim
);
8601 for (dp
= &super
->devlist
; *dp
;)
8602 if ((*dp
)->index
== (unsigned)super
->current_vol
) {
8605 if ((*dp
)->index
> (unsigned)victim
)
8609 mpb
->num_raid_devs
--;
8610 super
->updates_pending
++;
8613 case update_rename_array
: {
8614 struct imsm_update_rename_array
*u
= (void *) update
->buf
;
8615 char name
[MAX_RAID_SERIAL_LEN
+1];
8616 int target
= u
->dev_idx
;
8617 struct active_array
*a
;
8618 struct imsm_dev
*dev
;
8620 /* sanity check that we are not affecting the uuid of
8623 snprintf(name
, MAX_RAID_SERIAL_LEN
, "%s", (char *) u
->name
);
8624 name
[MAX_RAID_SERIAL_LEN
] = '\0';
8625 for (a
= st
->arrays
; a
; a
= a
->next
)
8626 if (a
->info
.container_member
== target
)
8628 dev
= get_imsm_dev(super
, u
->dev_idx
);
8629 if (a
|| !dev
|| !check_name(super
, name
, 1)) {
8630 dprintf("failed to rename subarray-%d\n", target
);
8634 snprintf((char *) dev
->volume
, MAX_RAID_SERIAL_LEN
, "%s", name
);
8635 super
->updates_pending
++;
8638 case update_add_remove_disk
: {
8639 /* we may be able to repair some arrays if disks are
8640 * being added, check teh status of add_remove_disk
8641 * if discs has been added.
8643 if (add_remove_disk_update(super
)) {
8644 struct active_array
*a
;
8646 super
->updates_pending
++;
8647 for (a
= st
->arrays
; a
; a
= a
->next
)
8648 a
->check_degraded
= 1;
8653 fprintf(stderr
, "error: unsuported process update type:"
8654 "(type: %d)\n", type
);
8658 static struct mdinfo
*get_spares_for_grow(struct supertype
*st
);
8660 static void imsm_prepare_update(struct supertype
*st
,
8661 struct metadata_update
*update
)
8664 * Allocate space to hold new disk entries, raid-device entries or a new
8665 * mpb if necessary. The manager synchronously waits for updates to
8666 * complete in the monitor, so new mpb buffers allocated here can be
8667 * integrated by the monitor thread without worrying about live pointers
8668 * in the manager thread.
8670 enum imsm_update_type type
= *(enum imsm_update_type
*) update
->buf
;
8671 struct intel_super
*super
= st
->sb
;
8672 struct imsm_super
*mpb
= super
->anchor
;
8677 case update_general_migration_checkpoint
:
8678 dprintf("imsm: prepare_update() "
8679 "for update_general_migration_checkpoint called\n");
8681 case update_takeover
: {
8682 struct imsm_update_takeover
*u
= (void *)update
->buf
;
8683 if (u
->direction
== R0_TO_R10
) {
8684 void **tail
= (void **)&update
->space_list
;
8685 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->subarray
);
8686 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
8687 int num_members
= map
->num_members
;
8691 /* allocate memory for added disks */
8692 for (i
= 0; i
< num_members
; i
++) {
8693 size
= sizeof(struct dl
);
8694 space
= malloc(size
);
8703 /* allocate memory for new device */
8704 size
= sizeof_imsm_dev(super
->devlist
->dev
, 0) +
8705 (num_members
* sizeof(__u32
));
8706 space
= malloc(size
);
8715 len
= disks_to_mpb_size(num_members
* 2);
8717 /* if allocation didn't success, free buffer */
8718 while (update
->space_list
) {
8719 void **sp
= update
->space_list
;
8720 update
->space_list
= *sp
;
8728 case update_reshape_container_disks
: {
8729 /* Every raid device in the container is about to
8730 * gain some more devices, and we will enter a
8732 * So each 'imsm_map' will be bigger, and the imsm_vol
8733 * will now hold 2 of them.
8734 * Thus we need new 'struct imsm_dev' allocations sized
8735 * as sizeof_imsm_dev but with more devices in both maps.
8737 struct imsm_update_reshape
*u
= (void *)update
->buf
;
8738 struct intel_dev
*dl
;
8739 void **space_tail
= (void**)&update
->space_list
;
8741 dprintf("imsm: imsm_prepare_update() for update_reshape\n");
8743 for (dl
= super
->devlist
; dl
; dl
= dl
->next
) {
8744 int size
= sizeof_imsm_dev(dl
->dev
, 1);
8746 if (u
->new_raid_disks
> u
->old_raid_disks
)
8747 size
+= sizeof(__u32
)*2*
8748 (u
->new_raid_disks
- u
->old_raid_disks
);
8757 len
= disks_to_mpb_size(u
->new_raid_disks
);
8758 dprintf("New anchor length is %llu\n", (unsigned long long)len
);
8761 case update_reshape_migration
: {
8762 /* for migration level 0->5 we need to add disks
8763 * so the same as for container operation we will copy
8764 * device to the bigger location.
8765 * in memory prepared device and new disk area are prepared
8766 * for usage in process update
8768 struct imsm_update_reshape_migration
*u
= (void *)update
->buf
;
8769 struct intel_dev
*id
;
8770 void **space_tail
= (void **)&update
->space_list
;
8773 int current_level
= -1;
8775 dprintf("imsm: imsm_prepare_update() for update_reshape\n");
8777 /* add space for bigger array in update
8779 for (id
= super
->devlist
; id
; id
= id
->next
) {
8780 if (id
->index
== (unsigned)u
->subdev
) {
8781 size
= sizeof_imsm_dev(id
->dev
, 1);
8782 if (u
->new_raid_disks
> u
->old_raid_disks
)
8783 size
+= sizeof(__u32
)*2*
8784 (u
->new_raid_disks
- u
->old_raid_disks
);
8794 if (update
->space_list
== NULL
)
8797 /* add space for disk in update
8799 size
= sizeof(struct dl
);
8802 free(update
->space_list
);
8803 update
->space_list
= NULL
;
8810 /* add spare device to update
8812 for (id
= super
->devlist
; id
; id
= id
->next
)
8813 if (id
->index
== (unsigned)u
->subdev
) {
8814 struct imsm_dev
*dev
;
8815 struct imsm_map
*map
;
8817 dev
= get_imsm_dev(super
, u
->subdev
);
8818 map
= get_imsm_map(dev
, MAP_0
);
8819 current_level
= map
->raid_level
;
8822 if ((u
->new_level
== 5) && (u
->new_level
!= current_level
)) {
8823 struct mdinfo
*spares
;
8825 spares
= get_spares_for_grow(st
);
8833 makedev(dev
->disk
.major
,
8835 dl
= get_disk_super(super
,
8838 dl
->index
= u
->old_raid_disks
;
8844 len
= disks_to_mpb_size(u
->new_raid_disks
);
8845 dprintf("New anchor length is %llu\n", (unsigned long long)len
);
8848 case update_size_change
: {
8851 case update_create_array
: {
8852 struct imsm_update_create_array
*u
= (void *) update
->buf
;
8853 struct intel_dev
*dv
;
8854 struct imsm_dev
*dev
= &u
->dev
;
8855 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
8857 struct disk_info
*inf
;
8861 inf
= get_disk_info(u
);
8862 len
= sizeof_imsm_dev(dev
, 1);
8863 /* allocate a new super->devlist entry */
8864 dv
= malloc(sizeof(*dv
));
8866 dv
->dev
= malloc(len
);
8871 update
->space
= NULL
;
8875 /* count how many spares will be converted to members */
8876 for (i
= 0; i
< map
->num_members
; i
++) {
8877 dl
= serial_to_dl(inf
[i
].serial
, super
);
8879 /* hmm maybe it failed?, nothing we can do about
8884 if (count_memberships(dl
, super
) == 0)
8887 len
+= activate
* sizeof(struct imsm_disk
);
8894 /* check if we need a larger metadata buffer */
8895 if (super
->next_buf
)
8896 buf_len
= super
->next_len
;
8898 buf_len
= super
->len
;
8900 if (__le32_to_cpu(mpb
->mpb_size
) + len
> buf_len
) {
8901 /* ok we need a larger buf than what is currently allocated
8902 * if this allocation fails process_update will notice that
8903 * ->next_len is set and ->next_buf is NULL
8905 buf_len
= ROUND_UP(__le32_to_cpu(mpb
->mpb_size
) + len
, 512);
8906 if (super
->next_buf
)
8907 free(super
->next_buf
);
8909 super
->next_len
= buf_len
;
8910 if (posix_memalign(&super
->next_buf
, 512, buf_len
) == 0)
8911 memset(super
->next_buf
, 0, buf_len
);
8913 super
->next_buf
= NULL
;
8917 /* must be called while manager is quiesced */
8918 static void imsm_delete(struct intel_super
*super
, struct dl
**dlp
, unsigned index
)
8920 struct imsm_super
*mpb
= super
->anchor
;
8922 struct imsm_dev
*dev
;
8923 struct imsm_map
*map
;
8924 int i
, j
, num_members
;
8927 dprintf("%s: deleting device[%d] from imsm_super\n",
8930 /* shift all indexes down one */
8931 for (iter
= super
->disks
; iter
; iter
= iter
->next
)
8932 if (iter
->index
> (int)index
)
8934 for (iter
= super
->missing
; iter
; iter
= iter
->next
)
8935 if (iter
->index
> (int)index
)
8938 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
8939 dev
= get_imsm_dev(super
, i
);
8940 map
= get_imsm_map(dev
, MAP_0
);
8941 num_members
= map
->num_members
;
8942 for (j
= 0; j
< num_members
; j
++) {
8943 /* update ord entries being careful not to propagate
8944 * ord-flags to the first map
8946 ord
= get_imsm_ord_tbl_ent(dev
, j
, MAP_X
);
8948 if (ord_to_idx(ord
) <= index
)
8951 map
= get_imsm_map(dev
, MAP_0
);
8952 set_imsm_ord_tbl_ent(map
, j
, ord_to_idx(ord
- 1));
8953 map
= get_imsm_map(dev
, MAP_1
);
8955 set_imsm_ord_tbl_ent(map
, j
, ord
- 1);
8960 super
->updates_pending
++;
8962 struct dl
*dl
= *dlp
;
8964 *dlp
= (*dlp
)->next
;
8965 __free_imsm_disk(dl
);
8968 #endif /* MDASSEMBLE */
8970 static void close_targets(int *targets
, int new_disks
)
8977 for (i
= 0; i
< new_disks
; i
++) {
8978 if (targets
[i
] >= 0) {
8985 static int imsm_get_allowed_degradation(int level
, int raid_disks
,
8986 struct intel_super
*super
,
8987 struct imsm_dev
*dev
)
8993 struct imsm_map
*map
;
8996 ret_val
= raid_disks
/2;
8997 /* check map if all disks pairs not failed
9000 map
= get_imsm_map(dev
, MAP_0
);
9001 for (i
= 0; i
< ret_val
; i
++) {
9002 int degradation
= 0;
9003 if (get_imsm_disk(super
, i
) == NULL
)
9005 if (get_imsm_disk(super
, i
+ 1) == NULL
)
9007 if (degradation
== 2)
9010 map
= get_imsm_map(dev
, MAP_1
);
9011 /* if there is no second map
9012 * result can be returned
9016 /* check degradation in second map
9018 for (i
= 0; i
< ret_val
; i
++) {
9019 int degradation
= 0;
9020 if (get_imsm_disk(super
, i
) == NULL
)
9022 if (get_imsm_disk(super
, i
+ 1) == NULL
)
9024 if (degradation
== 2)
9039 /*******************************************************************************
9040 * Function: open_backup_targets
9041 * Description: Function opens file descriptors for all devices given in
9044 * info : general array info
9045 * raid_disks : number of disks
9046 * raid_fds : table of device's file descriptors
9047 * super : intel super for raid10 degradation check
9048 * dev : intel device for raid10 degradation check
9052 ******************************************************************************/
9053 int open_backup_targets(struct mdinfo
*info
, int raid_disks
, int *raid_fds
,
9054 struct intel_super
*super
, struct imsm_dev
*dev
)
9060 for (i
= 0; i
< raid_disks
; i
++)
9063 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
9066 if (sd
->disk
.state
& (1<<MD_DISK_FAULTY
)) {
9067 dprintf("disk is faulty!!\n");
9071 if ((sd
->disk
.raid_disk
>= raid_disks
) ||
9072 (sd
->disk
.raid_disk
< 0))
9075 dn
= map_dev(sd
->disk
.major
,
9077 raid_fds
[sd
->disk
.raid_disk
] = dev_open(dn
, O_RDWR
);
9078 if (raid_fds
[sd
->disk
.raid_disk
] < 0) {
9079 fprintf(stderr
, "cannot open component\n");
9084 /* check if maximum array degradation level is not exceeded
9086 if ((raid_disks
- opened
) >
9087 imsm_get_allowed_degradation(info
->new_level
,
9090 fprintf(stderr
, "Not enough disks can be opened.\n");
9091 close_targets(raid_fds
, raid_disks
);
9098 /*******************************************************************************
9099 * Function: init_migr_record_imsm
9100 * Description: Function inits imsm migration record
9102 * super : imsm internal array info
9103 * dev : device under migration
9104 * info : general array info to find the smallest device
9107 ******************************************************************************/
9108 void init_migr_record_imsm(struct supertype
*st
, struct imsm_dev
*dev
,
9109 struct mdinfo
*info
)
9111 struct intel_super
*super
= st
->sb
;
9112 struct migr_record
*migr_rec
= super
->migr_rec
;
9114 unsigned long long dsize
, dev_sectors
;
9115 long long unsigned min_dev_sectors
= -1LLU;
9119 struct imsm_map
*map_dest
= get_imsm_map(dev
, MAP_0
);
9120 struct imsm_map
*map_src
= get_imsm_map(dev
, MAP_1
);
9121 unsigned long long num_migr_units
;
9122 unsigned long long array_blocks
;
9124 memset(migr_rec
, 0, sizeof(struct migr_record
));
9125 migr_rec
->family_num
= __cpu_to_le32(super
->anchor
->family_num
);
9127 /* only ascending reshape supported now */
9128 migr_rec
->ascending_migr
= __cpu_to_le32(1);
9130 migr_rec
->dest_depth_per_unit
= GEN_MIGR_AREA_SIZE
/
9131 max(map_dest
->blocks_per_strip
, map_src
->blocks_per_strip
);
9132 migr_rec
->dest_depth_per_unit
*=
9133 max(map_dest
->blocks_per_strip
, map_src
->blocks_per_strip
);
9134 new_data_disks
= imsm_num_data_members(dev
, MAP_0
);
9135 migr_rec
->blocks_per_unit
=
9136 __cpu_to_le32(migr_rec
->dest_depth_per_unit
* new_data_disks
);
9137 migr_rec
->dest_depth_per_unit
=
9138 __cpu_to_le32(migr_rec
->dest_depth_per_unit
);
9139 array_blocks
= info
->component_size
* new_data_disks
;
9141 array_blocks
/ __le32_to_cpu(migr_rec
->blocks_per_unit
);
9143 if (array_blocks
% __le32_to_cpu(migr_rec
->blocks_per_unit
))
9145 migr_rec
->num_migr_units
= __cpu_to_le32(num_migr_units
);
9147 migr_rec
->post_migr_vol_cap
= dev
->size_low
;
9148 migr_rec
->post_migr_vol_cap_hi
= dev
->size_high
;
9151 /* Find the smallest dev */
9152 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
9153 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
9154 fd
= dev_open(nm
, O_RDONLY
);
9157 get_dev_size(fd
, NULL
, &dsize
);
9158 dev_sectors
= dsize
/ 512;
9159 if (dev_sectors
< min_dev_sectors
)
9160 min_dev_sectors
= dev_sectors
;
9163 migr_rec
->ckpt_area_pba
= __cpu_to_le32(min_dev_sectors
-
9164 RAID_DISK_RESERVED_BLOCKS_IMSM_HI
);
9166 write_imsm_migr_rec(st
);
9171 /*******************************************************************************
9172 * Function: save_backup_imsm
9173 * Description: Function saves critical data stripes to Migration Copy Area
9174 * and updates the current migration unit status.
9175 * Use restore_stripes() to form a destination stripe,
9176 * and to write it to the Copy Area.
9178 * st : supertype information
9179 * dev : imsm device that backup is saved for
9180 * info : general array info
9181 * buf : input buffer
9182 * length : length of data to backup (blocks_per_unit)
9186 ******************************************************************************/
9187 int save_backup_imsm(struct supertype
*st
,
9188 struct imsm_dev
*dev
,
9189 struct mdinfo
*info
,
9194 struct intel_super
*super
= st
->sb
;
9195 unsigned long long *target_offsets
= NULL
;
9196 int *targets
= NULL
;
9198 struct imsm_map
*map_dest
= get_imsm_map(dev
, MAP_0
);
9199 int new_disks
= map_dest
->num_members
;
9200 int dest_layout
= 0;
9202 unsigned long long start
;
9203 int data_disks
= imsm_num_data_members(dev
, MAP_0
);
9205 targets
= malloc(new_disks
* sizeof(int));
9209 for (i
= 0; i
< new_disks
; i
++)
9212 target_offsets
= malloc(new_disks
* sizeof(unsigned long long));
9213 if (!target_offsets
)
9216 start
= info
->reshape_progress
* 512;
9217 for (i
= 0; i
< new_disks
; i
++) {
9218 target_offsets
[i
] = (unsigned long long)
9219 __le32_to_cpu(super
->migr_rec
->ckpt_area_pba
) * 512;
9220 /* move back copy area adderss, it will be moved forward
9221 * in restore_stripes() using start input variable
9223 target_offsets
[i
] -= start
/data_disks
;
9226 if (open_backup_targets(info
, new_disks
, targets
,
9230 dest_layout
= imsm_level_to_layout(map_dest
->raid_level
);
9231 dest_chunk
= __le16_to_cpu(map_dest
->blocks_per_strip
) * 512;
9233 if (restore_stripes(targets
, /* list of dest devices */
9234 target_offsets
, /* migration record offsets */
9237 map_dest
->raid_level
,
9239 -1, /* source backup file descriptor */
9240 0, /* input buf offset
9241 * always 0 buf is already offseted */
9245 pr_err("Error restoring stripes\n");
9253 close_targets(targets
, new_disks
);
9256 free(target_offsets
);
9261 /*******************************************************************************
9262 * Function: save_checkpoint_imsm
9263 * Description: Function called for current unit status update
9264 * in the migration record. It writes it to disk.
9266 * super : imsm internal array info
9267 * info : general array info
9271 * 2: failure, means no valid migration record
9272 * / no general migration in progress /
9273 ******************************************************************************/
9274 int save_checkpoint_imsm(struct supertype
*st
, struct mdinfo
*info
, int state
)
9276 struct intel_super
*super
= st
->sb
;
9277 unsigned long long blocks_per_unit
;
9278 unsigned long long curr_migr_unit
;
9280 if (load_imsm_migr_rec(super
, info
) != 0) {
9281 dprintf("imsm: ERROR: Cannot read migration record "
9282 "for checkpoint save.\n");
9286 blocks_per_unit
= __le32_to_cpu(super
->migr_rec
->blocks_per_unit
);
9287 if (blocks_per_unit
== 0) {
9288 dprintf("imsm: no migration in progress.\n");
9291 curr_migr_unit
= info
->reshape_progress
/ blocks_per_unit
;
9292 /* check if array is alligned to copy area
9293 * if it is not alligned, add one to current migration unit value
9294 * this can happend on array reshape finish only
9296 if (info
->reshape_progress
% blocks_per_unit
)
9299 super
->migr_rec
->curr_migr_unit
=
9300 __cpu_to_le32(curr_migr_unit
);
9301 super
->migr_rec
->rec_status
= __cpu_to_le32(state
);
9302 super
->migr_rec
->dest_1st_member_lba
=
9303 __cpu_to_le32(curr_migr_unit
*
9304 __le32_to_cpu(super
->migr_rec
->dest_depth_per_unit
));
9305 if (write_imsm_migr_rec(st
) < 0) {
9306 dprintf("imsm: Cannot write migration record "
9307 "outside backup area\n");
9314 /*******************************************************************************
9315 * Function: recover_backup_imsm
9316 * Description: Function recovers critical data from the Migration Copy Area
9317 * while assembling an array.
9319 * super : imsm internal array info
9320 * info : general array info
9322 * 0 : success (or there is no data to recover)
9324 ******************************************************************************/
9325 int recover_backup_imsm(struct supertype
*st
, struct mdinfo
*info
)
9327 struct intel_super
*super
= st
->sb
;
9328 struct migr_record
*migr_rec
= super
->migr_rec
;
9329 struct imsm_map
*map_dest
= NULL
;
9330 struct intel_dev
*id
= NULL
;
9331 unsigned long long read_offset
;
9332 unsigned long long write_offset
;
9334 int *targets
= NULL
;
9335 int new_disks
, i
, err
;
9338 unsigned long curr_migr_unit
= __le32_to_cpu(migr_rec
->curr_migr_unit
);
9339 unsigned long num_migr_units
= __le32_to_cpu(migr_rec
->num_migr_units
);
9341 int skipped_disks
= 0;
9343 err
= sysfs_get_str(info
, NULL
, "array_state", (char *)buffer
, 20);
9347 /* recover data only during assemblation */
9348 if (strncmp(buffer
, "inactive", 8) != 0)
9350 /* no data to recover */
9351 if (__le32_to_cpu(migr_rec
->rec_status
) == UNIT_SRC_NORMAL
)
9353 if (curr_migr_unit
>= num_migr_units
)
9356 /* find device during reshape */
9357 for (id
= super
->devlist
; id
; id
= id
->next
)
9358 if (is_gen_migration(id
->dev
))
9363 map_dest
= get_imsm_map(id
->dev
, MAP_0
);
9364 new_disks
= map_dest
->num_members
;
9366 read_offset
= (unsigned long long)
9367 __le32_to_cpu(migr_rec
->ckpt_area_pba
) * 512;
9369 write_offset
= ((unsigned long long)
9370 __le32_to_cpu(migr_rec
->dest_1st_member_lba
) +
9371 pba_of_lba0(map_dest
)) * 512;
9373 unit_len
= __le32_to_cpu(migr_rec
->dest_depth_per_unit
) * 512;
9374 if (posix_memalign((void **)&buf
, 512, unit_len
) != 0)
9376 targets
= malloc(new_disks
* sizeof(int));
9380 if (open_backup_targets(info
, new_disks
, targets
, super
, id
->dev
)) {
9381 pr_err("Cannot open some devices belonging to array.\n");
9385 for (i
= 0; i
< new_disks
; i
++) {
9386 if (targets
[i
] < 0) {
9390 if (lseek64(targets
[i
], read_offset
, SEEK_SET
) < 0) {
9391 pr_err("Cannot seek to block: %s\n",
9396 if ((unsigned)read(targets
[i
], buf
, unit_len
) != unit_len
) {
9397 pr_err("Cannot read copy area block: %s\n",
9402 if (lseek64(targets
[i
], write_offset
, SEEK_SET
) < 0) {
9403 pr_err("Cannot seek to block: %s\n",
9408 if ((unsigned)write(targets
[i
], buf
, unit_len
) != unit_len
) {
9409 pr_err("Cannot restore block: %s\n",
9416 if (skipped_disks
> imsm_get_allowed_degradation(info
->new_level
,
9420 pr_err("Cannot restore data from backup."
9421 " Too many failed disks\n");
9425 if (save_checkpoint_imsm(st
, info
, UNIT_SRC_NORMAL
)) {
9426 /* ignore error == 2, this can mean end of reshape here
9428 dprintf("imsm: Cannot write checkpoint to "
9429 "migration record (UNIT_SRC_NORMAL) during restart\n");
9435 for (i
= 0; i
< new_disks
; i
++)
9444 static char disk_by_path
[] = "/dev/disk/by-path/";
9446 static const char *imsm_get_disk_controller_domain(const char *path
)
9448 char disk_path
[PATH_MAX
];
9452 strncpy(disk_path
, disk_by_path
, PATH_MAX
- 1);
9453 strncat(disk_path
, path
, PATH_MAX
- strlen(disk_path
) - 1);
9454 if (stat(disk_path
, &st
) == 0) {
9455 struct sys_dev
* hba
;
9458 path
= devt_to_devpath(st
.st_rdev
);
9461 hba
= find_disk_attached_hba(-1, path
);
9462 if (hba
&& hba
->type
== SYS_DEV_SAS
)
9464 else if (hba
&& hba
->type
== SYS_DEV_SATA
)
9468 dprintf("path: %s hba: %s attached: %s\n",
9469 path
, (hba
) ? hba
->path
: "NULL", drv
);
9477 static int imsm_find_array_minor_by_subdev(int subdev
, int container
, int *minor
)
9479 char subdev_name
[20];
9480 struct mdstat_ent
*mdstat
;
9482 sprintf(subdev_name
, "%d", subdev
);
9483 mdstat
= mdstat_by_subdev(subdev_name
, container
);
9487 *minor
= mdstat
->devnum
;
9488 free_mdstat(mdstat
);
9492 static int imsm_reshape_is_allowed_on_container(struct supertype
*st
,
9493 struct geo_params
*geo
,
9494 int *old_raid_disks
,
9497 /* currently we only support increasing the number of devices
9498 * for a container. This increases the number of device for each
9499 * member array. They must all be RAID0 or RAID5.
9502 struct mdinfo
*info
, *member
;
9503 int devices_that_can_grow
= 0;
9505 dprintf("imsm: imsm_reshape_is_allowed_on_container(ENTER): "
9506 "st->devnum = (%i)\n",
9509 if (geo
->size
!= -1 ||
9510 geo
->level
!= UnSet
||
9511 geo
->layout
!= UnSet
||
9512 geo
->chunksize
!= 0 ||
9513 geo
->raid_disks
== UnSet
) {
9514 dprintf("imsm: Container operation is allowed for "
9515 "raid disks number change only.\n");
9519 if (direction
== ROLLBACK_METADATA_CHANGES
) {
9520 dprintf("imsm: Metadata changes rollback is not supported for "
9521 "container operation.\n");
9525 info
= container_content_imsm(st
, NULL
);
9526 for (member
= info
; member
; member
= member
->next
) {
9530 dprintf("imsm: checking device_num: %i\n",
9531 member
->container_member
);
9533 if (geo
->raid_disks
<= member
->array
.raid_disks
) {
9534 /* we work on container for Online Capacity Expansion
9535 * only so raid_disks has to grow
9537 dprintf("imsm: for container operation raid disks "
9538 "increase is required\n");
9542 if ((info
->array
.level
!= 0) &&
9543 (info
->array
.level
!= 5)) {
9544 /* we cannot use this container with other raid level
9546 dprintf("imsm: for container operation wrong"
9547 " raid level (%i) detected\n",
9551 /* check for platform support
9552 * for this raid level configuration
9554 struct intel_super
*super
= st
->sb
;
9555 if (!is_raid_level_supported(super
->orom
,
9556 member
->array
.level
,
9558 dprintf("platform does not support raid%d with"
9562 geo
->raid_disks
> 1 ? "s" : "");
9565 /* check if component size is aligned to chunk size
9567 if (info
->component_size
%
9568 (info
->array
.chunk_size
/512)) {
9569 dprintf("Component size is not aligned to "
9575 if (*old_raid_disks
&&
9576 info
->array
.raid_disks
!= *old_raid_disks
)
9578 *old_raid_disks
= info
->array
.raid_disks
;
9580 /* All raid5 and raid0 volumes in container
9581 * have to be ready for Online Capacity Expansion
9582 * so they need to be assembled. We have already
9583 * checked that no recovery etc is happening.
9585 result
= imsm_find_array_minor_by_subdev(member
->container_member
,
9589 dprintf("imsm: cannot find array\n");
9592 devices_that_can_grow
++;
9595 if (!member
&& devices_that_can_grow
)
9599 dprintf("\tContainer operation allowed\n");
9601 dprintf("\tError: %i\n", ret_val
);
9606 /* Function: get_spares_for_grow
9607 * Description: Allocates memory and creates list of spare devices
9608 * avaliable in container. Checks if spare drive size is acceptable.
9609 * Parameters: Pointer to the supertype structure
9610 * Returns: Pointer to the list of spare devices (mdinfo structure) on success,
9613 static struct mdinfo
*get_spares_for_grow(struct supertype
*st
)
9615 unsigned long long min_size
= min_acceptable_spare_size_imsm(st
);
9616 return container_choose_spares(st
, min_size
, NULL
, NULL
, NULL
, 0);
9619 /******************************************************************************
9620 * function: imsm_create_metadata_update_for_reshape
9621 * Function creates update for whole IMSM container.
9623 ******************************************************************************/
9624 static int imsm_create_metadata_update_for_reshape(
9625 struct supertype
*st
,
9626 struct geo_params
*geo
,
9628 struct imsm_update_reshape
**updatep
)
9630 struct intel_super
*super
= st
->sb
;
9631 struct imsm_super
*mpb
= super
->anchor
;
9632 int update_memory_size
= 0;
9633 struct imsm_update_reshape
*u
= NULL
;
9634 struct mdinfo
*spares
= NULL
;
9636 int delta_disks
= 0;
9639 dprintf("imsm_update_metadata_for_reshape(enter) raid_disks = %i\n",
9642 delta_disks
= geo
->raid_disks
- old_raid_disks
;
9644 /* size of all update data without anchor */
9645 update_memory_size
= sizeof(struct imsm_update_reshape
);
9647 /* now add space for spare disks that we need to add. */
9648 update_memory_size
+= sizeof(u
->new_disks
[0]) * (delta_disks
- 1);
9650 u
= calloc(1, update_memory_size
);
9653 "cannot get memory for imsm_update_reshape update\n");
9656 u
->type
= update_reshape_container_disks
;
9657 u
->old_raid_disks
= old_raid_disks
;
9658 u
->new_raid_disks
= geo
->raid_disks
;
9660 /* now get spare disks list
9662 spares
= get_spares_for_grow(st
);
9665 || delta_disks
> spares
->array
.spare_disks
) {
9666 pr_err("imsm: ERROR: Cannot get spare devices "
9667 "for %s.\n", geo
->dev_name
);
9672 /* we have got spares
9673 * update disk list in imsm_disk list table in anchor
9675 dprintf("imsm: %i spares are available.\n\n",
9676 spares
->array
.spare_disks
);
9679 for (i
= 0; i
< delta_disks
; i
++) {
9684 u
->new_disks
[i
] = makedev(dev
->disk
.major
,
9686 dl
= get_disk_super(super
, dev
->disk
.major
, dev
->disk
.minor
);
9687 dl
->index
= mpb
->num_disks
;
9697 dprintf("imsm: reshape update preparation :");
9698 if (i
== delta_disks
) {
9701 return update_memory_size
;
9704 dprintf(" Error\n");
9710 /******************************************************************************
9711 * function: imsm_create_metadata_update_for_size_change()
9712 * Creates update for IMSM array for array size change.
9714 ******************************************************************************/
9715 static int imsm_create_metadata_update_for_size_change(
9716 struct supertype
*st
,
9717 struct geo_params
*geo
,
9718 struct imsm_update_size_change
**updatep
)
9720 struct intel_super
*super
= st
->sb
;
9721 int update_memory_size
= 0;
9722 struct imsm_update_size_change
*u
= NULL
;
9724 dprintf("imsm_create_metadata_update_for_size_change(enter)"
9725 " New size = %llu\n", geo
->size
);
9727 /* size of all update data without anchor */
9728 update_memory_size
= sizeof(struct imsm_update_size_change
);
9730 u
= calloc(1, update_memory_size
);
9732 dprintf("error: cannot get memory for "
9733 "imsm_create_metadata_update_for_size_change\n");
9736 u
->type
= update_size_change
;
9737 u
->subdev
= super
->current_vol
;
9738 u
->new_size
= geo
->size
;
9740 dprintf("imsm: reshape update preparation : OK\n");
9743 return update_memory_size
;
9746 /******************************************************************************
9747 * function: imsm_create_metadata_update_for_migration()
9748 * Creates update for IMSM array.
9750 ******************************************************************************/
9751 static int imsm_create_metadata_update_for_migration(
9752 struct supertype
*st
,
9753 struct geo_params
*geo
,
9754 struct imsm_update_reshape_migration
**updatep
)
9756 struct intel_super
*super
= st
->sb
;
9757 int update_memory_size
= 0;
9758 struct imsm_update_reshape_migration
*u
= NULL
;
9759 struct imsm_dev
*dev
;
9760 int previous_level
= -1;
9762 dprintf("imsm_create_metadata_update_for_migration(enter)"
9763 " New Level = %i\n", geo
->level
);
9765 /* size of all update data without anchor */
9766 update_memory_size
= sizeof(struct imsm_update_reshape_migration
);
9768 u
= calloc(1, update_memory_size
);
9770 dprintf("error: cannot get memory for "
9771 "imsm_create_metadata_update_for_migration\n");
9774 u
->type
= update_reshape_migration
;
9775 u
->subdev
= super
->current_vol
;
9776 u
->new_level
= geo
->level
;
9777 u
->new_layout
= geo
->layout
;
9778 u
->new_raid_disks
= u
->old_raid_disks
= geo
->raid_disks
;
9779 u
->new_disks
[0] = -1;
9780 u
->new_chunksize
= -1;
9782 dev
= get_imsm_dev(super
, u
->subdev
);
9784 struct imsm_map
*map
;
9786 map
= get_imsm_map(dev
, MAP_0
);
9788 int current_chunk_size
=
9789 __le16_to_cpu(map
->blocks_per_strip
) / 2;
9791 if (geo
->chunksize
!= current_chunk_size
) {
9792 u
->new_chunksize
= geo
->chunksize
/ 1024;
9794 "chunk size change from %i to %i\n",
9795 current_chunk_size
, u
->new_chunksize
);
9797 previous_level
= map
->raid_level
;
9800 if ((geo
->level
== 5) && (previous_level
== 0)) {
9801 struct mdinfo
*spares
= NULL
;
9803 u
->new_raid_disks
++;
9804 spares
= get_spares_for_grow(st
);
9805 if ((spares
== NULL
) || (spares
->array
.spare_disks
< 1)) {
9808 update_memory_size
= 0;
9809 dprintf("error: cannot get spare device "
9810 "for requested migration");
9815 dprintf("imsm: reshape update preparation : OK\n");
9818 return update_memory_size
;
9821 static void imsm_update_metadata_locally(struct supertype
*st
,
9824 struct metadata_update mu
;
9829 mu
.space_list
= NULL
;
9831 imsm_prepare_update(st
, &mu
);
9832 imsm_process_update(st
, &mu
);
9834 while (mu
.space_list
) {
9835 void **space
= mu
.space_list
;
9836 mu
.space_list
= *space
;
9841 /***************************************************************************
9842 * Function: imsm_analyze_change
9843 * Description: Function analyze change for single volume
9844 * and validate if transition is supported
9845 * Parameters: Geometry parameters, supertype structure,
9846 * metadata change direction (apply/rollback)
9847 * Returns: Operation type code on success, -1 if fail
9848 ****************************************************************************/
9849 enum imsm_reshape_type
imsm_analyze_change(struct supertype
*st
,
9850 struct geo_params
*geo
,
9857 /* number of added/removed disks in operation result */
9858 int devNumChange
= 0;
9859 /* imsm compatible layout value for array geometry verification */
9860 int imsm_layout
= -1;
9862 struct imsm_dev
*dev
;
9863 struct intel_super
*super
;
9864 long long current_size
;
9865 unsigned long long free_size
;
9869 getinfo_super_imsm_volume(st
, &info
, NULL
);
9870 if ((geo
->level
!= info
.array
.level
) &&
9871 (geo
->level
>= 0) &&
9872 (geo
->level
!= UnSet
)) {
9873 switch (info
.array
.level
) {
9875 if (geo
->level
== 5) {
9876 change
= CH_MIGRATION
;
9877 if (geo
->layout
!= ALGORITHM_LEFT_ASYMMETRIC
) {
9878 pr_err("Error. Requested Layout "
9879 "not supported (left-asymmetric layout "
9880 "is supported only)!\n");
9882 goto analyse_change_exit
;
9884 imsm_layout
= geo
->layout
;
9886 devNumChange
= 1; /* parity disk added */
9887 } else if (geo
->level
== 10) {
9888 change
= CH_TAKEOVER
;
9890 devNumChange
= 2; /* two mirrors added */
9891 imsm_layout
= 0x102; /* imsm supported layout */
9896 if (geo
->level
== 0) {
9897 change
= CH_TAKEOVER
;
9899 devNumChange
= -(geo
->raid_disks
/2);
9900 imsm_layout
= 0; /* imsm raid0 layout */
9905 pr_err("Error. Level Migration from %d to %d "
9907 info
.array
.level
, geo
->level
);
9908 goto analyse_change_exit
;
9911 geo
->level
= info
.array
.level
;
9913 if ((geo
->layout
!= info
.array
.layout
)
9914 && ((geo
->layout
!= UnSet
) && (geo
->layout
!= -1))) {
9915 change
= CH_MIGRATION
;
9916 if ((info
.array
.layout
== 0)
9917 && (info
.array
.level
== 5)
9918 && (geo
->layout
== 5)) {
9919 /* reshape 5 -> 4 */
9920 } else if ((info
.array
.layout
== 5)
9921 && (info
.array
.level
== 5)
9922 && (geo
->layout
== 0)) {
9923 /* reshape 4 -> 5 */
9927 pr_err("Error. Layout Migration from %d to %d "
9929 info
.array
.layout
, geo
->layout
);
9931 goto analyse_change_exit
;
9934 geo
->layout
= info
.array
.layout
;
9935 if (imsm_layout
== -1)
9936 imsm_layout
= info
.array
.layout
;
9939 if ((geo
->chunksize
> 0) && (geo
->chunksize
!= UnSet
)
9940 && (geo
->chunksize
!= info
.array
.chunk_size
))
9941 change
= CH_MIGRATION
;
9943 geo
->chunksize
= info
.array
.chunk_size
;
9945 chunk
= geo
->chunksize
/ 1024;
9948 dev
= get_imsm_dev(super
, super
->current_vol
);
9949 data_disks
= imsm_num_data_members(dev
, MAP_0
);
9950 /* compute current size per disk member
9952 current_size
= info
.custom_array_size
/ data_disks
;
9954 if (geo
->size
> 0) {
9955 /* align component size
9957 geo
->size
= imsm_component_size_aligment_check(
9958 get_imsm_raid_level(dev
->vol
.map
),
9963 if ((current_size
!= geo
->size
) && (geo
->size
>= 0)) {
9965 pr_err("Error. Size change should be the only "
9966 "one at a time.\n");
9968 goto analyse_change_exit
;
9970 if ((super
->current_vol
+ 1) != super
->anchor
->num_raid_devs
) {
9971 pr_err("Error. The last volume in container "
9972 "can be expanded only (%i/%i).\n",
9973 super
->current_vol
, st
->devnum
);
9974 goto analyse_change_exit
;
9976 /* check the maximum available size
9978 rv
= imsm_get_free_size(st
, dev
->vol
.map
->num_members
,
9979 0, chunk
, &free_size
);
9981 /* Cannot find maximum available space
9985 max_size
= free_size
+ current_size
;
9986 /* align component size
9988 max_size
= imsm_component_size_aligment_check(
9989 get_imsm_raid_level(dev
->vol
.map
),
9993 if (geo
->size
== 0) {
9994 /* requested size change to the maximum available size
9996 if (max_size
== 0) {
9997 pr_err("Error. Cannot find "
9998 "maximum available space.\n");
10000 goto analyse_change_exit
;
10002 geo
->size
= max_size
;
10005 if ((direction
== ROLLBACK_METADATA_CHANGES
)) {
10006 /* accept size for rollback only
10009 /* round size due to metadata compatibility
10011 geo
->size
= (geo
->size
>> SECT_PER_MB_SHIFT
)
10012 << SECT_PER_MB_SHIFT
;
10013 dprintf("Prepare update for size change to %llu\n",
10015 if (current_size
>= geo
->size
) {
10016 pr_err("Error. Size expansion is "
10017 "supported only (current size is %llu, "
10018 "requested size /rounded/ is %llu).\n",
10019 current_size
, geo
->size
);
10020 goto analyse_change_exit
;
10022 if (max_size
&& geo
->size
> max_size
) {
10023 pr_err("Error. Requested size is larger "
10024 "than maximum available size (maximum "
10025 "available size is %llu, "
10026 "requested size /rounded/ is %llu).\n",
10027 max_size
, geo
->size
);
10028 goto analyse_change_exit
;
10031 geo
->size
*= data_disks
;
10032 geo
->raid_disks
= dev
->vol
.map
->num_members
;
10033 change
= CH_ARRAY_SIZE
;
10035 if (!validate_geometry_imsm(st
,
10038 geo
->raid_disks
+ devNumChange
,
10045 struct intel_super
*super
= st
->sb
;
10046 struct imsm_super
*mpb
= super
->anchor
;
10048 if (mpb
->num_raid_devs
> 1) {
10049 pr_err("Error. Cannot perform operation on %s"
10050 "- for this operation it MUST be single "
10051 "array in container\n",
10057 analyse_change_exit
:
10058 if ((direction
== ROLLBACK_METADATA_CHANGES
) &&
10059 ((change
== CH_MIGRATION
) || (change
== CH_TAKEOVER
))) {
10060 dprintf("imsm: Metadata changes rollback is not supported for "
10061 "migration and takeover operations.\n");
10067 int imsm_takeover(struct supertype
*st
, struct geo_params
*geo
)
10069 struct intel_super
*super
= st
->sb
;
10070 struct imsm_update_takeover
*u
;
10072 u
= malloc(sizeof(struct imsm_update_takeover
));
10076 u
->type
= update_takeover
;
10077 u
->subarray
= super
->current_vol
;
10079 /* 10->0 transition */
10080 if (geo
->level
== 0)
10081 u
->direction
= R10_TO_R0
;
10083 /* 0->10 transition */
10084 if (geo
->level
== 10)
10085 u
->direction
= R0_TO_R10
;
10087 /* update metadata locally */
10088 imsm_update_metadata_locally(st
, u
,
10089 sizeof(struct imsm_update_takeover
));
10090 /* and possibly remotely */
10091 if (st
->update_tail
)
10092 append_metadata_update(st
, u
,
10093 sizeof(struct imsm_update_takeover
));
10100 static int imsm_reshape_super(struct supertype
*st
, long long size
, int level
,
10101 int layout
, int chunksize
, int raid_disks
,
10102 int delta_disks
, char *backup
, char *dev
,
10103 int direction
, int verbose
)
10106 struct geo_params geo
;
10108 dprintf("imsm: reshape_super called.\n");
10110 memset(&geo
, 0, sizeof(struct geo_params
));
10112 geo
.dev_name
= dev
;
10113 geo
.dev_id
= st
->devnum
;
10116 geo
.layout
= layout
;
10117 geo
.chunksize
= chunksize
;
10118 geo
.raid_disks
= raid_disks
;
10119 if (delta_disks
!= UnSet
)
10120 geo
.raid_disks
+= delta_disks
;
10122 dprintf("\tfor level : %i\n", geo
.level
);
10123 dprintf("\tfor raid_disks : %i\n", geo
.raid_disks
);
10125 if (experimental() == 0)
10128 if (st
->container_dev
== st
->devnum
) {
10129 /* On container level we can only increase number of devices. */
10130 dprintf("imsm: info: Container operation\n");
10131 int old_raid_disks
= 0;
10133 if (imsm_reshape_is_allowed_on_container(
10134 st
, &geo
, &old_raid_disks
, direction
)) {
10135 struct imsm_update_reshape
*u
= NULL
;
10138 len
= imsm_create_metadata_update_for_reshape(
10139 st
, &geo
, old_raid_disks
, &u
);
10142 dprintf("imsm: Cannot prepare update\n");
10143 goto exit_imsm_reshape_super
;
10147 /* update metadata locally */
10148 imsm_update_metadata_locally(st
, u
, len
);
10149 /* and possibly remotely */
10150 if (st
->update_tail
)
10151 append_metadata_update(st
, u
, len
);
10156 pr_err("(imsm) Operation "
10157 "is not allowed on this container\n");
10160 /* On volume level we support following operations
10161 * - takeover: raid10 -> raid0; raid0 -> raid10
10162 * - chunk size migration
10163 * - migration: raid5 -> raid0; raid0 -> raid5
10165 struct intel_super
*super
= st
->sb
;
10166 struct intel_dev
*dev
= super
->devlist
;
10167 int change
, devnum
;
10168 dprintf("imsm: info: Volume operation\n");
10169 /* find requested device */
10171 if (imsm_find_array_minor_by_subdev(
10172 dev
->index
, st
->container_dev
, &devnum
) == 0
10173 && devnum
== geo
.dev_id
)
10178 pr_err("Cannot find %s (%i) subarray\n",
10179 geo
.dev_name
, geo
.dev_id
);
10180 goto exit_imsm_reshape_super
;
10182 super
->current_vol
= dev
->index
;
10183 change
= imsm_analyze_change(st
, &geo
, direction
);
10186 ret_val
= imsm_takeover(st
, &geo
);
10188 case CH_MIGRATION
: {
10189 struct imsm_update_reshape_migration
*u
= NULL
;
10191 imsm_create_metadata_update_for_migration(
10195 "Cannot prepare update\n");
10199 /* update metadata locally */
10200 imsm_update_metadata_locally(st
, u
, len
);
10201 /* and possibly remotely */
10202 if (st
->update_tail
)
10203 append_metadata_update(st
, u
, len
);
10208 case CH_ARRAY_SIZE
: {
10209 struct imsm_update_size_change
*u
= NULL
;
10211 imsm_create_metadata_update_for_size_change(
10215 "Cannot prepare update\n");
10219 /* update metadata locally */
10220 imsm_update_metadata_locally(st
, u
, len
);
10221 /* and possibly remotely */
10222 if (st
->update_tail
)
10223 append_metadata_update(st
, u
, len
);
10233 exit_imsm_reshape_super
:
10234 dprintf("imsm: reshape_super Exit code = %i\n", ret_val
);
10238 /*******************************************************************************
10239 * Function: wait_for_reshape_imsm
10240 * Description: Function writes new sync_max value and waits until
10241 * reshape process reach new position
10243 * sra : general array info
10244 * ndata : number of disks in new array's layout
10247 * 1 : there is no reshape in progress,
10249 ******************************************************************************/
10250 int wait_for_reshape_imsm(struct mdinfo
*sra
, int ndata
)
10252 int fd
= sysfs_get_fd(sra
, NULL
, "reshape_position");
10253 unsigned long long completed
;
10254 /* to_complete : new sync_max position */
10255 unsigned long long to_complete
= sra
->reshape_progress
;
10256 unsigned long long position_to_set
= to_complete
/ ndata
;
10259 dprintf("imsm: wait_for_reshape_imsm() "
10260 "cannot open reshape_position\n");
10264 if (sysfs_fd_get_ll(fd
, &completed
) < 0) {
10265 dprintf("imsm: wait_for_reshape_imsm() "
10266 "cannot read reshape_position (no reshape in progres)\n");
10271 if (completed
> to_complete
) {
10272 dprintf("imsm: wait_for_reshape_imsm() "
10273 "wrong next position to set %llu (%llu)\n",
10274 to_complete
, completed
);
10278 dprintf("Position set: %llu\n", position_to_set
);
10279 if (sysfs_set_num(sra
, NULL
, "sync_max",
10280 position_to_set
) != 0) {
10281 dprintf("imsm: wait_for_reshape_imsm() "
10282 "cannot set reshape position to %llu\n",
10293 select(fd
+1, &rfds
, NULL
, NULL
, NULL
);
10294 if (sysfs_get_str(sra
, NULL
, "sync_action",
10296 strncmp(action
, "reshape", 7) != 0)
10298 if (sysfs_fd_get_ll(fd
, &completed
) < 0) {
10299 dprintf("imsm: wait_for_reshape_imsm() "
10300 "cannot read reshape_position (in loop)\n");
10304 } while (completed
< to_complete
);
10310 /*******************************************************************************
10311 * Function: check_degradation_change
10312 * Description: Check that array hasn't become failed.
10314 * info : for sysfs access
10315 * sources : source disks descriptors
10316 * degraded: previous degradation level
10318 * degradation level
10319 ******************************************************************************/
10320 int check_degradation_change(struct mdinfo
*info
,
10324 unsigned long long new_degraded
;
10327 rv
= sysfs_get_ll(info
, NULL
, "degraded", &new_degraded
);
10328 if ((rv
== -1) || (new_degraded
!= (unsigned long long)degraded
)) {
10329 /* check each device to ensure it is still working */
10332 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
10333 if (sd
->disk
.state
& (1<<MD_DISK_FAULTY
))
10335 if (sd
->disk
.state
& (1<<MD_DISK_SYNC
)) {
10337 if (sysfs_get_str(info
,
10338 sd
, "state", sbuf
, 20) < 0 ||
10339 strstr(sbuf
, "faulty") ||
10340 strstr(sbuf
, "in_sync") == NULL
) {
10341 /* this device is dead */
10342 sd
->disk
.state
= (1<<MD_DISK_FAULTY
);
10343 if (sd
->disk
.raid_disk
>= 0 &&
10344 sources
[sd
->disk
.raid_disk
] >= 0) {
10346 sd
->disk
.raid_disk
]);
10347 sources
[sd
->disk
.raid_disk
] =
10356 return new_degraded
;
10359 /*******************************************************************************
10360 * Function: imsm_manage_reshape
10361 * Description: Function finds array under reshape and it manages reshape
10362 * process. It creates stripes backups (if required) and sets
10365 * afd : Backup handle (nattive) - not used
10366 * sra : general array info
10367 * reshape : reshape parameters - not used
10368 * st : supertype structure
10369 * blocks : size of critical section [blocks]
10370 * fds : table of source device descriptor
10371 * offsets : start of array (offest per devices)
10373 * destfd : table of destination device descriptor
10374 * destoffsets : table of destination offsets (per device)
10376 * 1 : success, reshape is done
10378 ******************************************************************************/
10379 static int imsm_manage_reshape(
10380 int afd
, struct mdinfo
*sra
, struct reshape
*reshape
,
10381 struct supertype
*st
, unsigned long backup_blocks
,
10382 int *fds
, unsigned long long *offsets
,
10383 int dests
, int *destfd
, unsigned long long *destoffsets
)
10386 struct intel_super
*super
= st
->sb
;
10387 struct intel_dev
*dv
= NULL
;
10388 struct imsm_dev
*dev
= NULL
;
10389 struct imsm_map
*map_src
;
10390 int migr_vol_qan
= 0;
10391 int ndata
, odata
; /* [bytes] */
10392 int chunk
; /* [bytes] */
10393 struct migr_record
*migr_rec
;
10395 unsigned int buf_size
; /* [bytes] */
10396 unsigned long long max_position
; /* array size [bytes] */
10397 unsigned long long next_step
; /* [blocks]/[bytes] */
10398 unsigned long long old_data_stripe_length
;
10399 unsigned long long start_src
; /* [bytes] */
10400 unsigned long long start
; /* [bytes] */
10401 unsigned long long start_buf_shift
; /* [bytes] */
10403 int source_layout
= 0;
10405 if (!fds
|| !offsets
|| !sra
)
10408 /* Find volume during the reshape */
10409 for (dv
= super
->devlist
; dv
; dv
= dv
->next
) {
10410 if (dv
->dev
->vol
.migr_type
== MIGR_GEN_MIGR
10411 && dv
->dev
->vol
.migr_state
== 1) {
10416 /* Only one volume can migrate at the same time */
10417 if (migr_vol_qan
!= 1) {
10418 pr_err(": %s", migr_vol_qan
?
10419 "Number of migrating volumes greater than 1\n" :
10420 "There is no volume during migrationg\n");
10424 map_src
= get_imsm_map(dev
, MAP_1
);
10425 if (map_src
== NULL
)
10428 ndata
= imsm_num_data_members(dev
, MAP_0
);
10429 odata
= imsm_num_data_members(dev
, MAP_1
);
10431 chunk
= __le16_to_cpu(map_src
->blocks_per_strip
) * 512;
10432 old_data_stripe_length
= odata
* chunk
;
10434 migr_rec
= super
->migr_rec
;
10436 /* initialize migration record for start condition */
10437 if (sra
->reshape_progress
== 0)
10438 init_migr_record_imsm(st
, dev
, sra
);
10440 if (__le32_to_cpu(migr_rec
->rec_status
) != UNIT_SRC_NORMAL
) {
10441 dprintf("imsm: cannot restart migration when data "
10442 "are present in copy area.\n");
10445 /* Save checkpoint to update migration record for current
10446 * reshape position (in md). It can be farther than current
10447 * reshape position in metadata.
10449 if (save_checkpoint_imsm(st
, sra
, UNIT_SRC_NORMAL
) == 1) {
10450 /* ignore error == 2, this can mean end of reshape here
10452 dprintf("imsm: Cannot write checkpoint to "
10453 "migration record (UNIT_SRC_NORMAL, "
10454 "initial save)\n");
10459 /* size for data */
10460 buf_size
= __le32_to_cpu(migr_rec
->blocks_per_unit
) * 512;
10461 /* extend buffer size for parity disk */
10462 buf_size
+= __le32_to_cpu(migr_rec
->dest_depth_per_unit
) * 512;
10463 /* add space for stripe aligment */
10464 buf_size
+= old_data_stripe_length
;
10465 if (posix_memalign((void **)&buf
, 4096, buf_size
)) {
10466 dprintf("imsm: Cannot allocate checpoint buffer\n");
10470 max_position
= sra
->component_size
* ndata
;
10471 source_layout
= imsm_level_to_layout(map_src
->raid_level
);
10473 while (__le32_to_cpu(migr_rec
->curr_migr_unit
) <
10474 __le32_to_cpu(migr_rec
->num_migr_units
)) {
10475 /* current reshape position [blocks] */
10476 unsigned long long current_position
=
10477 __le32_to_cpu(migr_rec
->blocks_per_unit
)
10478 * __le32_to_cpu(migr_rec
->curr_migr_unit
);
10479 unsigned long long border
;
10481 /* Check that array hasn't become failed.
10483 degraded
= check_degradation_change(sra
, fds
, degraded
);
10484 if (degraded
> 1) {
10485 dprintf("imsm: Abort reshape due to degradation"
10486 " level (%i)\n", degraded
);
10490 next_step
= __le32_to_cpu(migr_rec
->blocks_per_unit
);
10492 if ((current_position
+ next_step
) > max_position
)
10493 next_step
= max_position
- current_position
;
10495 start
= current_position
* 512;
10497 /* allign reading start to old geometry */
10498 start_buf_shift
= start
% old_data_stripe_length
;
10499 start_src
= start
- start_buf_shift
;
10501 border
= (start_src
/ odata
) - (start
/ ndata
);
10503 if (border
<= __le32_to_cpu(migr_rec
->dest_depth_per_unit
)) {
10504 /* save critical stripes to buf
10505 * start - start address of current unit
10506 * to backup [bytes]
10507 * start_src - start address of current unit
10508 * to backup alligned to source array
10511 unsigned long long next_step_filler
= 0;
10512 unsigned long long copy_length
= next_step
* 512;
10514 /* allign copy area length to stripe in old geometry */
10515 next_step_filler
= ((copy_length
+ start_buf_shift
)
10516 % old_data_stripe_length
);
10517 if (next_step_filler
)
10518 next_step_filler
= (old_data_stripe_length
10519 - next_step_filler
);
10520 dprintf("save_stripes() parameters: start = %llu,"
10521 "\tstart_src = %llu,\tnext_step*512 = %llu,"
10522 "\tstart_in_buf_shift = %llu,"
10523 "\tnext_step_filler = %llu\n",
10524 start
, start_src
, copy_length
,
10525 start_buf_shift
, next_step_filler
);
10527 if (save_stripes(fds
, offsets
, map_src
->num_members
,
10528 chunk
, map_src
->raid_level
,
10529 source_layout
, 0, NULL
, start_src
,
10531 next_step_filler
+ start_buf_shift
,
10533 dprintf("imsm: Cannot save stripes"
10537 /* Convert data to destination format and store it
10538 * in backup general migration area
10540 if (save_backup_imsm(st
, dev
, sra
,
10541 buf
+ start_buf_shift
, copy_length
)) {
10542 dprintf("imsm: Cannot save stripes to "
10543 "target devices\n");
10546 if (save_checkpoint_imsm(st
, sra
,
10547 UNIT_SRC_IN_CP_AREA
)) {
10548 dprintf("imsm: Cannot write checkpoint to "
10549 "migration record (UNIT_SRC_IN_CP_AREA)\n");
10553 /* set next step to use whole border area */
10554 border
/= next_step
;
10556 next_step
*= border
;
10558 /* When data backed up, checkpoint stored,
10559 * kick the kernel to reshape unit of data
10561 next_step
= next_step
+ sra
->reshape_progress
;
10562 /* limit next step to array max position */
10563 if (next_step
> max_position
)
10564 next_step
= max_position
;
10565 sysfs_set_num(sra
, NULL
, "suspend_lo", sra
->reshape_progress
);
10566 sysfs_set_num(sra
, NULL
, "suspend_hi", next_step
);
10567 sra
->reshape_progress
= next_step
;
10569 /* wait until reshape finish */
10570 if (wait_for_reshape_imsm(sra
, ndata
) < 0) {
10571 dprintf("wait_for_reshape_imsm returned error!\n");
10575 if (save_checkpoint_imsm(st
, sra
, UNIT_SRC_NORMAL
) == 1) {
10576 /* ignore error == 2, this can mean end of reshape here
10578 dprintf("imsm: Cannot write checkpoint to "
10579 "migration record (UNIT_SRC_NORMAL)\n");
10585 /* return '1' if done */
10589 abort_reshape(sra
);
10593 #endif /* MDASSEMBLE */
10595 struct superswitch super_imsm
= {
10597 .examine_super
= examine_super_imsm
,
10598 .brief_examine_super
= brief_examine_super_imsm
,
10599 .brief_examine_subarrays
= brief_examine_subarrays_imsm
,
10600 .export_examine_super
= export_examine_super_imsm
,
10601 .detail_super
= detail_super_imsm
,
10602 .brief_detail_super
= brief_detail_super_imsm
,
10603 .write_init_super
= write_init_super_imsm
,
10604 .validate_geometry
= validate_geometry_imsm
,
10605 .add_to_super
= add_to_super_imsm
,
10606 .remove_from_super
= remove_from_super_imsm
,
10607 .detail_platform
= detail_platform_imsm
,
10608 .kill_subarray
= kill_subarray_imsm
,
10609 .update_subarray
= update_subarray_imsm
,
10610 .load_container
= load_container_imsm
,
10611 .default_geometry
= default_geometry_imsm
,
10612 .get_disk_controller_domain
= imsm_get_disk_controller_domain
,
10613 .reshape_super
= imsm_reshape_super
,
10614 .manage_reshape
= imsm_manage_reshape
,
10615 .recover_backup
= recover_backup_imsm
,
10617 .match_home
= match_home_imsm
,
10618 .uuid_from_super
= uuid_from_super_imsm
,
10619 .getinfo_super
= getinfo_super_imsm
,
10620 .getinfo_super_disks
= getinfo_super_disks_imsm
,
10621 .update_super
= update_super_imsm
,
10623 .avail_size
= avail_size_imsm
,
10624 .min_acceptable_spare_size
= min_acceptable_spare_size_imsm
,
10626 .compare_super
= compare_super_imsm
,
10628 .load_super
= load_super_imsm
,
10629 .init_super
= init_super_imsm
,
10630 .store_super
= store_super_imsm
,
10631 .free_super
= free_super_imsm
,
10632 .match_metadata_desc
= match_metadata_desc_imsm
,
10633 .container_content
= container_content_imsm
,
10641 .open_new
= imsm_open_new
,
10642 .set_array_state
= imsm_set_array_state
,
10643 .set_disk
= imsm_set_disk
,
10644 .sync_metadata
= imsm_sync_metadata
,
10645 .activate_spare
= imsm_activate_spare
,
10646 .process_update
= imsm_process_update
,
10647 .prepare_update
= imsm_prepare_update
,
10648 #endif /* MDASSEMBLE */