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
; /* 0xE8 - 0xEB total blocks */
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 #define IMSM_DISK_FILLERS 4
106 __u32 filler
[IMSM_DISK_FILLERS
]; /* 0xF4 - 0x107 MPB_DISK_FILLERS for future expansion */
109 /* RAID map configuration infos. */
111 __u32 pba_of_lba0
; /* start address of partition */
112 __u32 blocks_per_member
;/* blocks per member */
113 __u32 num_data_stripes
; /* number of data stripes */
114 __u16 blocks_per_strip
;
115 __u8 map_state
; /* Normal, Uninitialized, Degraded, Failed */
116 #define IMSM_T_STATE_NORMAL 0
117 #define IMSM_T_STATE_UNINITIALIZED 1
118 #define IMSM_T_STATE_DEGRADED 2
119 #define IMSM_T_STATE_FAILED 3
121 #define IMSM_T_RAID0 0
122 #define IMSM_T_RAID1 1
123 #define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */
124 __u8 num_members
; /* number of member disks */
125 __u8 num_domains
; /* number of parity domains */
126 __u8 failed_disk_num
; /* valid only when state is degraded */
128 __u32 filler
[7]; /* expansion area */
129 #define IMSM_ORD_REBUILD (1 << 24)
130 __u32 disk_ord_tbl
[1]; /* disk_ord_tbl[num_members],
131 * top byte contains some flags
133 } __attribute__ ((packed
));
136 __u32 curr_migr_unit
;
137 __u32 checkpoint_id
; /* id to access curr_migr_unit */
138 __u8 migr_state
; /* Normal or Migrating */
140 #define MIGR_REBUILD 1
141 #define MIGR_VERIFY 2 /* analagous to echo check > sync_action */
142 #define MIGR_GEN_MIGR 3
143 #define MIGR_STATE_CHANGE 4
144 #define MIGR_REPAIR 5
145 __u8 migr_type
; /* Initializing, Rebuilding, ... */
147 __u8 fs_state
; /* fast-sync state for CnG (0xff == disabled) */
148 __u16 verify_errors
; /* number of mismatches */
149 __u16 bad_blocks
; /* number of bad blocks during verify */
151 struct imsm_map map
[1];
152 /* here comes another one if migr_state */
153 } __attribute__ ((packed
));
156 __u8 volume
[MAX_RAID_SERIAL_LEN
];
159 #define DEV_BOOTABLE __cpu_to_le32(0x01)
160 #define DEV_BOOT_DEVICE __cpu_to_le32(0x02)
161 #define DEV_READ_COALESCING __cpu_to_le32(0x04)
162 #define DEV_WRITE_COALESCING __cpu_to_le32(0x08)
163 #define DEV_LAST_SHUTDOWN_DIRTY __cpu_to_le32(0x10)
164 #define DEV_HIDDEN_AT_BOOT __cpu_to_le32(0x20)
165 #define DEV_CURRENTLY_HIDDEN __cpu_to_le32(0x40)
166 #define DEV_VERIFY_AND_FIX __cpu_to_le32(0x80)
167 #define DEV_MAP_STATE_UNINIT __cpu_to_le32(0x100)
168 #define DEV_NO_AUTO_RECOVERY __cpu_to_le32(0x200)
169 #define DEV_CLONE_N_GO __cpu_to_le32(0x400)
170 #define DEV_CLONE_MAN_SYNC __cpu_to_le32(0x800)
171 #define DEV_CNG_MASTER_DISK_NUM __cpu_to_le32(0x1000)
172 __u32 status
; /* Persistent RaidDev status */
173 __u32 reserved_blocks
; /* Reserved blocks at beginning of volume */
177 __u8 cng_master_disk
;
181 #define IMSM_DEV_FILLERS 10
182 __u32 filler
[IMSM_DEV_FILLERS
];
184 } __attribute__ ((packed
));
187 __u8 sig
[MAX_SIGNATURE_LENGTH
]; /* 0x00 - 0x1F */
188 __u32 check_sum
; /* 0x20 - 0x23 MPB Checksum */
189 __u32 mpb_size
; /* 0x24 - 0x27 Size of MPB */
190 __u32 family_num
; /* 0x28 - 0x2B Checksum from first time this config was written */
191 __u32 generation_num
; /* 0x2C - 0x2F Incremented each time this array's MPB is written */
192 __u32 error_log_size
; /* 0x30 - 0x33 in bytes */
193 __u32 attributes
; /* 0x34 - 0x37 */
194 __u8 num_disks
; /* 0x38 Number of configured disks */
195 __u8 num_raid_devs
; /* 0x39 Number of configured volumes */
196 __u8 error_log_pos
; /* 0x3A */
197 __u8 fill
[1]; /* 0x3B */
198 __u32 cache_size
; /* 0x3c - 0x40 in mb */
199 __u32 orig_family_num
; /* 0x40 - 0x43 original family num */
200 __u32 pwr_cycle_count
; /* 0x44 - 0x47 simulated power cycle count for array */
201 __u32 bbm_log_size
; /* 0x48 - 0x4B - size of bad Block Mgmt Log in bytes */
202 #define IMSM_FILLERS 35
203 __u32 filler
[IMSM_FILLERS
]; /* 0x4C - 0xD7 RAID_MPB_FILLERS */
204 struct imsm_disk disk
[1]; /* 0xD8 diskTbl[numDisks] */
205 /* here comes imsm_dev[num_raid_devs] */
206 /* here comes BBM logs */
207 } __attribute__ ((packed
));
209 #define BBM_LOG_MAX_ENTRIES 254
211 struct bbm_log_entry
{
212 __u64 defective_block_start
;
213 #define UNREADABLE 0xFFFFFFFF
214 __u32 spare_block_offset
;
215 __u16 remapped_marked_count
;
217 } __attribute__ ((__packed__
));
220 __u32 signature
; /* 0xABADB10C */
222 __u32 reserved_spare_block_count
; /* 0 */
223 __u32 reserved
; /* 0xFFFF */
224 __u64 first_spare_lba
;
225 struct bbm_log_entry mapped_block_entries
[BBM_LOG_MAX_ENTRIES
];
226 } __attribute__ ((__packed__
));
230 static char *map_state_str
[] = { "normal", "uninitialized", "degraded", "failed" };
233 #define RAID_DISK_RESERVED_BLOCKS_IMSM_HI 2209
235 #define GEN_MIGR_AREA_SIZE 2048 /* General Migration Copy Area size in blocks */
237 #define UNIT_SRC_NORMAL 0 /* Source data for curr_migr_unit must
238 * be recovered using srcMap */
239 #define UNIT_SRC_IN_CP_AREA 1 /* Source data for curr_migr_unit has
240 * already been migrated and must
241 * be recovered from checkpoint area */
243 __u32 rec_status
; /* Status used to determine how to restart
244 * migration in case it aborts
246 __u32 curr_migr_unit
; /* 0..numMigrUnits-1 */
247 __u32 family_num
; /* Family number of MPB
248 * containing the RaidDev
249 * that is migrating */
250 __u32 ascending_migr
; /* True if migrating in increasing
252 __u32 blocks_per_unit
; /* Num disk blocks per unit of operation */
253 __u32 dest_depth_per_unit
; /* Num member blocks each destMap
255 * advances per unit-of-operation */
256 __u32 ckpt_area_pba
; /* Pba of first block of ckpt copy area */
257 __u32 dest_1st_member_lba
; /* First member lba on first
258 * stripe of destination */
259 __u32 num_migr_units
; /* Total num migration units-of-op */
260 __u32 post_migr_vol_cap
; /* Size of volume after
261 * migration completes */
262 __u32 post_migr_vol_cap_hi
; /* Expansion space for LBA64 */
263 __u32 ckpt_read_disk_num
; /* Which member disk in destSubMap[0] the
264 * migration ckpt record was read from
265 * (for recovered migrations) */
266 } __attribute__ ((__packed__
));
268 static __u8
migr_type(struct imsm_dev
*dev
)
270 if (dev
->vol
.migr_type
== MIGR_VERIFY
&&
271 dev
->status
& DEV_VERIFY_AND_FIX
)
274 return dev
->vol
.migr_type
;
277 static void set_migr_type(struct imsm_dev
*dev
, __u8 migr_type
)
279 /* for compatibility with older oroms convert MIGR_REPAIR, into
280 * MIGR_VERIFY w/ DEV_VERIFY_AND_FIX status
282 if (migr_type
== MIGR_REPAIR
) {
283 dev
->vol
.migr_type
= MIGR_VERIFY
;
284 dev
->status
|= DEV_VERIFY_AND_FIX
;
286 dev
->vol
.migr_type
= migr_type
;
287 dev
->status
&= ~DEV_VERIFY_AND_FIX
;
291 static unsigned int sector_count(__u32 bytes
)
293 return ((bytes
+ (512-1)) & (~(512-1))) / 512;
296 static unsigned int mpb_sectors(struct imsm_super
*mpb
)
298 return sector_count(__le32_to_cpu(mpb
->mpb_size
));
302 struct imsm_dev
*dev
;
303 struct intel_dev
*next
;
308 enum sys_dev_type type
;
311 struct intel_hba
*next
;
318 /* internal representation of IMSM metadata */
321 void *buf
; /* O_DIRECT buffer for reading/writing metadata */
322 struct imsm_super
*anchor
; /* immovable parameters */
325 void *migr_rec_buf
; /* buffer for I/O operations */
326 struct migr_record
*migr_rec
; /* migration record */
328 size_t len
; /* size of the 'buf' allocation */
329 void *next_buf
; /* for realloc'ing buf from the manager */
331 int updates_pending
; /* count of pending updates for mdmon */
332 int current_vol
; /* index of raid device undergoing creation */
333 __u32 create_offset
; /* common start for 'current_vol' */
334 __u32 random
; /* random data for seeding new family numbers */
335 struct intel_dev
*devlist
;
339 __u8 serial
[MAX_RAID_SERIAL_LEN
];
342 struct imsm_disk disk
;
345 struct extent
*e
; /* for determining freespace @ create */
346 int raiddisk
; /* slot to fill in autolayout */
348 } *disks
, *current_disk
;
349 struct dl
*disk_mgmt_list
; /* list of disks to add/remove while mdmon
351 struct dl
*missing
; /* disks removed while we weren't looking */
352 struct bbm_log
*bbm_log
;
353 struct intel_hba
*hba
; /* device path of the raid controller for this metadata */
354 const struct imsm_orom
*orom
; /* platform firmware support */
355 struct intel_super
*next
; /* (temp) list for disambiguating family_num */
359 struct imsm_disk disk
;
360 #define IMSM_UNKNOWN_OWNER (-1)
362 struct intel_disk
*next
;
366 unsigned long long start
, size
;
369 /* definitions of reshape process types */
370 enum imsm_reshape_type
{
375 /* definition of messages passed to imsm_process_update */
376 enum imsm_update_type
{
377 update_activate_spare
,
381 update_add_remove_disk
,
382 update_reshape_container_disks
,
383 update_reshape_migration
,
385 update_general_migration_checkpoint
,
388 struct imsm_update_activate_spare
{
389 enum imsm_update_type type
;
393 struct imsm_update_activate_spare
*next
;
406 enum takeover_direction
{
410 struct imsm_update_takeover
{
411 enum imsm_update_type type
;
413 enum takeover_direction direction
;
416 struct imsm_update_reshape
{
417 enum imsm_update_type type
;
421 int new_disks
[1]; /* new_raid_disks - old_raid_disks makedev number */
424 struct imsm_update_reshape_migration
{
425 enum imsm_update_type type
;
428 /* fields for array migration changes
435 int new_disks
[1]; /* new_raid_disks - old_raid_disks makedev number */
438 struct imsm_update_general_migration_checkpoint
{
439 enum imsm_update_type type
;
440 __u32 curr_migr_unit
;
444 __u8 serial
[MAX_RAID_SERIAL_LEN
];
447 struct imsm_update_create_array
{
448 enum imsm_update_type type
;
453 struct imsm_update_kill_array
{
454 enum imsm_update_type type
;
458 struct imsm_update_rename_array
{
459 enum imsm_update_type type
;
460 __u8 name
[MAX_RAID_SERIAL_LEN
];
464 struct imsm_update_add_remove_disk
{
465 enum imsm_update_type type
;
469 static const char *_sys_dev_type
[] = {
470 [SYS_DEV_UNKNOWN
] = "Unknown",
471 [SYS_DEV_SAS
] = "SAS",
472 [SYS_DEV_SATA
] = "SATA"
475 const char *get_sys_dev_type(enum sys_dev_type type
)
477 if (type
>= SYS_DEV_MAX
)
478 type
= SYS_DEV_UNKNOWN
;
480 return _sys_dev_type
[type
];
483 static struct intel_hba
* alloc_intel_hba(struct sys_dev
*device
)
485 struct intel_hba
*result
= malloc(sizeof(*result
));
487 result
->type
= device
->type
;
488 result
->path
= strdup(device
->path
);
490 if (result
->path
&& (result
->pci_id
= strrchr(result
->path
, '/')) != NULL
)
496 static struct intel_hba
* find_intel_hba(struct intel_hba
*hba
, struct sys_dev
*device
)
498 struct intel_hba
*result
=NULL
;
499 for (result
= hba
; result
; result
= result
->next
) {
500 if (result
->type
== device
->type
&& strcmp(result
->path
, device
->path
) == 0)
506 static int attach_hba_to_super(struct intel_super
*super
, struct sys_dev
*device
)
508 struct intel_hba
*hba
;
510 /* check if disk attached to Intel HBA */
511 hba
= find_intel_hba(super
->hba
, device
);
514 /* Check if HBA is already attached to super */
515 if (super
->hba
== NULL
) {
516 super
->hba
= alloc_intel_hba(device
);
521 /* Intel metadata allows for all disks attached to the same type HBA.
522 * Do not sypport odf HBA types mixing
524 if (device
->type
!= hba
->type
)
530 hba
->next
= alloc_intel_hba(device
);
534 static struct sys_dev
* find_disk_attached_hba(int fd
, const char *devname
)
536 struct sys_dev
*list
, *elem
, *prev
;
539 if ((list
= find_intel_devices()) == NULL
)
543 disk_path
= (char *) devname
;
545 disk_path
= diskfd_to_devpath(fd
);
552 for (prev
= NULL
, elem
= list
; elem
; prev
= elem
, elem
= elem
->next
) {
553 if (path_attached_to_hba(disk_path
, elem
->path
)) {
557 prev
->next
= elem
->next
;
559 if (disk_path
!= devname
)
565 if (disk_path
!= devname
)
573 static int find_intel_hba_capability(int fd
, struct intel_super
*super
,
576 static struct supertype
*match_metadata_desc_imsm(char *arg
)
578 struct supertype
*st
;
580 if (strcmp(arg
, "imsm") != 0 &&
581 strcmp(arg
, "default") != 0
585 st
= malloc(sizeof(*st
));
588 memset(st
, 0, sizeof(*st
));
589 st
->container_dev
= NoMdDev
;
590 st
->ss
= &super_imsm
;
591 st
->max_devs
= IMSM_MAX_DEVICES
;
592 st
->minor_version
= 0;
598 static __u8
*get_imsm_version(struct imsm_super
*mpb
)
600 return &mpb
->sig
[MPB_SIG_LEN
];
604 /* retrieve a disk directly from the anchor when the anchor is known to be
605 * up-to-date, currently only at load time
607 static struct imsm_disk
*__get_imsm_disk(struct imsm_super
*mpb
, __u8 index
)
609 if (index
>= mpb
->num_disks
)
611 return &mpb
->disk
[index
];
614 /* retrieve the disk description based on a index of the disk
617 static struct dl
*get_imsm_dl_disk(struct intel_super
*super
, __u8 index
)
621 for (d
= super
->disks
; d
; d
= d
->next
)
622 if (d
->index
== index
)
627 /* retrieve a disk from the parsed metadata */
628 static struct imsm_disk
*get_imsm_disk(struct intel_super
*super
, __u8 index
)
632 dl
= get_imsm_dl_disk(super
, index
);
639 /* generate a checksum directly from the anchor when the anchor is known to be
640 * up-to-date, currently only at load or write_super after coalescing
642 static __u32
__gen_imsm_checksum(struct imsm_super
*mpb
)
644 __u32 end
= mpb
->mpb_size
/ sizeof(end
);
645 __u32
*p
= (__u32
*) mpb
;
649 sum
+= __le32_to_cpu(*p
);
653 return sum
- __le32_to_cpu(mpb
->check_sum
);
656 static size_t sizeof_imsm_map(struct imsm_map
*map
)
658 return sizeof(struct imsm_map
) + sizeof(__u32
) * (map
->num_members
- 1);
661 struct imsm_map
*get_imsm_map(struct imsm_dev
*dev
, int second_map
)
663 /* A device can have 2 maps if it is in the middle of a migration.
665 * 0 - we return the first map
666 * 1 - we return the second map if it exists, else NULL
667 * -1 - we return the second map if it exists, else the first
668 * -2 - we return longer map /excluding uninitialized state/
670 struct imsm_map
*map
= &dev
->vol
.map
[0];
671 struct imsm_map
*map2
= NULL
;
673 if (dev
->vol
.migr_state
)
674 map2
= (void *)map
+ sizeof_imsm_map(map
);
676 switch (second_map
) {
688 && map2
->map_state
!= IMSM_T_STATE_UNINITIALIZED
689 && map2
->num_members
> map
->num_members
)
699 /* return the size of the device.
700 * migr_state increases the returned size if map[0] were to be duplicated
702 static size_t sizeof_imsm_dev(struct imsm_dev
*dev
, int migr_state
)
704 size_t size
= sizeof(*dev
) - sizeof(struct imsm_map
) +
705 sizeof_imsm_map(get_imsm_map(dev
, 0));
707 /* migrating means an additional map */
708 if (dev
->vol
.migr_state
)
709 size
+= sizeof_imsm_map(get_imsm_map(dev
, 1));
711 size
+= sizeof_imsm_map(get_imsm_map(dev
, 0));
717 /* retrieve disk serial number list from a metadata update */
718 static struct disk_info
*get_disk_info(struct imsm_update_create_array
*update
)
721 struct disk_info
*inf
;
723 inf
= u
+ sizeof(*update
) - sizeof(struct imsm_dev
) +
724 sizeof_imsm_dev(&update
->dev
, 0);
730 static struct imsm_dev
*__get_imsm_dev(struct imsm_super
*mpb
, __u8 index
)
736 if (index
>= mpb
->num_raid_devs
)
739 /* devices start after all disks */
740 offset
= ((void *) &mpb
->disk
[mpb
->num_disks
]) - _mpb
;
742 for (i
= 0; i
<= index
; i
++)
744 return _mpb
+ offset
;
746 offset
+= sizeof_imsm_dev(_mpb
+ offset
, 0);
751 static struct imsm_dev
*get_imsm_dev(struct intel_super
*super
, __u8 index
)
753 struct intel_dev
*dv
;
755 if (index
>= super
->anchor
->num_raid_devs
)
757 for (dv
= super
->devlist
; dv
; dv
= dv
->next
)
758 if (dv
->index
== index
)
766 * == 1 get second map
767 * == -1 than get map according to the current migr_state
769 static __u32
get_imsm_ord_tbl_ent(struct imsm_dev
*dev
,
773 struct imsm_map
*map
;
775 map
= get_imsm_map(dev
, second_map
);
777 /* top byte identifies disk under rebuild */
778 return __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
781 #define ord_to_idx(ord) (((ord) << 8) >> 8)
782 static __u32
get_imsm_disk_idx(struct imsm_dev
*dev
, int slot
, int second_map
)
784 __u32 ord
= get_imsm_ord_tbl_ent(dev
, slot
, second_map
);
786 return ord_to_idx(ord
);
789 static void set_imsm_ord_tbl_ent(struct imsm_map
*map
, int slot
, __u32 ord
)
791 map
->disk_ord_tbl
[slot
] = __cpu_to_le32(ord
);
794 static int get_imsm_disk_slot(struct imsm_map
*map
, unsigned idx
)
799 for (slot
= 0; slot
< map
->num_members
; slot
++) {
800 ord
= __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
801 if (ord_to_idx(ord
) == idx
)
808 static int get_imsm_raid_level(struct imsm_map
*map
)
810 if (map
->raid_level
== 1) {
811 if (map
->num_members
== 2)
817 return map
->raid_level
;
820 static int cmp_extent(const void *av
, const void *bv
)
822 const struct extent
*a
= av
;
823 const struct extent
*b
= bv
;
824 if (a
->start
< b
->start
)
826 if (a
->start
> b
->start
)
831 static int count_memberships(struct dl
*dl
, struct intel_super
*super
)
836 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
837 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
838 struct imsm_map
*map
= get_imsm_map(dev
, 0);
840 if (get_imsm_disk_slot(map
, dl
->index
) >= 0)
847 static __u32
imsm_min_reserved_sectors(struct intel_super
*super
);
849 static struct extent
*get_extents(struct intel_super
*super
, struct dl
*dl
)
851 /* find a list of used extents on the given physical device */
852 struct extent
*rv
, *e
;
854 int memberships
= count_memberships(dl
, super
);
857 /* trim the reserved area for spares, so they can join any array
858 * regardless of whether the OROM has assigned sectors from the
859 * IMSM_RESERVED_SECTORS region
862 reservation
= imsm_min_reserved_sectors(super
);
864 reservation
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
866 rv
= malloc(sizeof(struct extent
) * (memberships
+ 1));
871 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
872 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
873 struct imsm_map
*map
= get_imsm_map(dev
, 0);
875 if (get_imsm_disk_slot(map
, dl
->index
) >= 0) {
876 e
->start
= __le32_to_cpu(map
->pba_of_lba0
);
877 e
->size
= __le32_to_cpu(map
->blocks_per_member
);
881 qsort(rv
, memberships
, sizeof(*rv
), cmp_extent
);
883 /* determine the start of the metadata
884 * when no raid devices are defined use the default
885 * ...otherwise allow the metadata to truncate the value
886 * as is the case with older versions of imsm
889 struct extent
*last
= &rv
[memberships
- 1];
892 remainder
= __le32_to_cpu(dl
->disk
.total_blocks
) -
893 (last
->start
+ last
->size
);
894 /* round down to 1k block to satisfy precision of the kernel
898 /* make sure remainder is still sane */
899 if (remainder
< (unsigned)ROUND_UP(super
->len
, 512) >> 9)
900 remainder
= ROUND_UP(super
->len
, 512) >> 9;
901 if (reservation
> remainder
)
902 reservation
= remainder
;
904 e
->start
= __le32_to_cpu(dl
->disk
.total_blocks
) - reservation
;
909 /* try to determine how much space is reserved for metadata from
910 * the last get_extents() entry, otherwise fallback to the
913 static __u32
imsm_reserved_sectors(struct intel_super
*super
, struct dl
*dl
)
919 /* for spares just return a minimal reservation which will grow
920 * once the spare is picked up by an array
923 return MPB_SECTOR_CNT
;
925 e
= get_extents(super
, dl
);
927 return MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
929 /* scroll to last entry */
930 for (i
= 0; e
[i
].size
; i
++)
933 rv
= __le32_to_cpu(dl
->disk
.total_blocks
) - e
[i
].start
;
940 static int is_spare(struct imsm_disk
*disk
)
942 return (disk
->status
& SPARE_DISK
) == SPARE_DISK
;
945 static int is_configured(struct imsm_disk
*disk
)
947 return (disk
->status
& CONFIGURED_DISK
) == CONFIGURED_DISK
;
950 static int is_failed(struct imsm_disk
*disk
)
952 return (disk
->status
& FAILED_DISK
) == FAILED_DISK
;
955 /* try to determine how much space is reserved for metadata from
956 * the last get_extents() entry on the smallest active disk,
957 * otherwise fallback to the default
959 static __u32
imsm_min_reserved_sectors(struct intel_super
*super
)
963 __u32 min_active
, remainder
;
964 __u32 rv
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
965 struct dl
*dl
, *dl_min
= NULL
;
971 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
974 if (dl
->disk
.total_blocks
< min_active
|| min_active
== 0) {
976 min_active
= dl
->disk
.total_blocks
;
982 /* find last lba used by subarrays on the smallest active disk */
983 e
= get_extents(super
, dl_min
);
986 for (i
= 0; e
[i
].size
; i
++)
989 remainder
= min_active
- e
[i
].start
;
992 /* to give priority to recovery we should not require full
993 IMSM_RESERVED_SECTORS from the spare */
994 rv
= MPB_SECTOR_CNT
+ NUM_BLOCKS_DIRTY_STRIPE_REGION
;
996 /* if real reservation is smaller use that value */
997 return (remainder
< rv
) ? remainder
: rv
;
1000 /* Return minimum size of a spare that can be used in this array*/
1001 static unsigned long long min_acceptable_spare_size_imsm(struct supertype
*st
)
1003 struct intel_super
*super
= st
->sb
;
1007 unsigned long long rv
= 0;
1011 /* find first active disk in array */
1013 while (dl
&& (is_failed(&dl
->disk
) || dl
->index
== -1))
1017 /* find last lba used by subarrays */
1018 e
= get_extents(super
, dl
);
1021 for (i
= 0; e
[i
].size
; i
++)
1024 rv
= e
[i
-1].start
+ e
[i
-1].size
;
1027 /* add the amount of space needed for metadata */
1028 rv
= rv
+ imsm_min_reserved_sectors(super
);
1034 static __u64
blocks_per_migr_unit(struct intel_super
*super
,
1035 struct imsm_dev
*dev
);
1037 static int is_gen_migration(struct imsm_dev
*dev
);
1039 static void print_imsm_dev(struct intel_super
*super
,
1040 struct imsm_dev
*dev
,
1046 struct imsm_map
*map
= get_imsm_map(dev
, 0);
1047 struct imsm_map
*map2
= get_imsm_map(dev
, 1);
1051 printf("[%.16s]:\n", dev
->volume
);
1052 printf(" UUID : %s\n", uuid
);
1053 printf(" RAID Level : %d", get_imsm_raid_level(map
));
1055 printf(" <-- %d", get_imsm_raid_level(map2
));
1057 printf(" Members : %d", map
->num_members
);
1059 printf(" <-- %d", map2
->num_members
);
1061 printf(" Slots : [");
1062 for (i
= 0; i
< map
->num_members
; i
++) {
1063 ord
= get_imsm_ord_tbl_ent(dev
, i
, 0);
1064 printf("%s", ord
& IMSM_ORD_REBUILD
? "_" : "U");
1069 for (i
= 0; i
< map2
->num_members
; i
++) {
1070 ord
= get_imsm_ord_tbl_ent(dev
, i
, 1);
1071 printf("%s", ord
& IMSM_ORD_REBUILD
? "_" : "U");
1076 printf(" Failed disk : ");
1077 if (map
->failed_disk_num
== 0xff)
1080 printf("%i", map
->failed_disk_num
);
1082 slot
= get_imsm_disk_slot(map
, disk_idx
);
1084 ord
= get_imsm_ord_tbl_ent(dev
, slot
, -1);
1085 printf(" This Slot : %d%s\n", slot
,
1086 ord
& IMSM_ORD_REBUILD
? " (out-of-sync)" : "");
1088 printf(" This Slot : ?\n");
1089 sz
= __le32_to_cpu(dev
->size_high
);
1091 sz
+= __le32_to_cpu(dev
->size_low
);
1092 printf(" Array Size : %llu%s\n", (unsigned long long)sz
,
1093 human_size(sz
* 512));
1094 sz
= __le32_to_cpu(map
->blocks_per_member
);
1095 printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz
,
1096 human_size(sz
* 512));
1097 printf(" Sector Offset : %u\n",
1098 __le32_to_cpu(map
->pba_of_lba0
));
1099 printf(" Num Stripes : %u\n",
1100 __le32_to_cpu(map
->num_data_stripes
));
1101 printf(" Chunk Size : %u KiB",
1102 __le16_to_cpu(map
->blocks_per_strip
) / 2);
1104 printf(" <-- %u KiB",
1105 __le16_to_cpu(map2
->blocks_per_strip
) / 2);
1107 printf(" Reserved : %d\n", __le32_to_cpu(dev
->reserved_blocks
));
1108 printf(" Migrate State : ");
1109 if (dev
->vol
.migr_state
) {
1110 if (migr_type(dev
) == MIGR_INIT
)
1111 printf("initialize\n");
1112 else if (migr_type(dev
) == MIGR_REBUILD
)
1113 printf("rebuild\n");
1114 else if (migr_type(dev
) == MIGR_VERIFY
)
1116 else if (migr_type(dev
) == MIGR_GEN_MIGR
)
1117 printf("general migration\n");
1118 else if (migr_type(dev
) == MIGR_STATE_CHANGE
)
1119 printf("state change\n");
1120 else if (migr_type(dev
) == MIGR_REPAIR
)
1123 printf("<unknown:%d>\n", migr_type(dev
));
1126 printf(" Map State : %s", map_state_str
[map
->map_state
]);
1127 if (dev
->vol
.migr_state
) {
1128 struct imsm_map
*map
= get_imsm_map(dev
, 1);
1130 printf(" <-- %s", map_state_str
[map
->map_state
]);
1131 printf("\n Checkpoint : %u ",
1132 __le32_to_cpu(dev
->vol
.curr_migr_unit
));
1133 if ((is_gen_migration(dev
)) && (super
->disks
->index
> 1))
1136 printf("(%llu)", (unsigned long long)
1137 blocks_per_migr_unit(super
, dev
));
1140 printf(" Dirty State : %s\n", dev
->vol
.dirty
? "dirty" : "clean");
1143 static void print_imsm_disk(struct imsm_disk
*disk
, int index
, __u32 reserved
)
1145 char str
[MAX_RAID_SERIAL_LEN
+ 1];
1148 if (index
< -1 || !disk
)
1152 snprintf(str
, MAX_RAID_SERIAL_LEN
+ 1, "%s", disk
->serial
);
1154 printf(" Disk%02d Serial : %s\n", index
, str
);
1156 printf(" Disk Serial : %s\n", str
);
1157 printf(" State :%s%s%s\n", is_spare(disk
) ? " spare" : "",
1158 is_configured(disk
) ? " active" : "",
1159 is_failed(disk
) ? " failed" : "");
1160 printf(" Id : %08x\n", __le32_to_cpu(disk
->scsi_id
));
1161 sz
= __le32_to_cpu(disk
->total_blocks
) - reserved
;
1162 printf(" Usable Size : %llu%s\n", (unsigned long long)sz
,
1163 human_size(sz
* 512));
1166 void examine_migr_rec_imsm(struct intel_super
*super
)
1168 struct migr_record
*migr_rec
= super
->migr_rec
;
1169 struct imsm_super
*mpb
= super
->anchor
;
1172 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
1173 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
1174 if (is_gen_migration(dev
) == 0)
1177 printf("\nMigration Record Information:");
1178 if (super
->disks
->index
> 1) {
1179 printf(" Empty\n ");
1180 printf("Examine one of first two disks in array\n");
1183 printf("\n Status : ");
1184 if (__le32_to_cpu(migr_rec
->rec_status
) == UNIT_SRC_NORMAL
)
1187 printf("Contains Data\n");
1188 printf(" Current Unit : %u\n",
1189 __le32_to_cpu(migr_rec
->curr_migr_unit
));
1190 printf(" Family : %u\n",
1191 __le32_to_cpu(migr_rec
->family_num
));
1192 printf(" Ascending : %u\n",
1193 __le32_to_cpu(migr_rec
->ascending_migr
));
1194 printf(" Blocks Per Unit : %u\n",
1195 __le32_to_cpu(migr_rec
->blocks_per_unit
));
1196 printf(" Dest. Depth Per Unit : %u\n",
1197 __le32_to_cpu(migr_rec
->dest_depth_per_unit
));
1198 printf(" Checkpoint Area pba : %u\n",
1199 __le32_to_cpu(migr_rec
->ckpt_area_pba
));
1200 printf(" First member lba : %u\n",
1201 __le32_to_cpu(migr_rec
->dest_1st_member_lba
));
1202 printf(" Total Number of Units : %u\n",
1203 __le32_to_cpu(migr_rec
->num_migr_units
));
1204 printf(" Size of volume : %u\n",
1205 __le32_to_cpu(migr_rec
->post_migr_vol_cap
));
1206 printf(" Expansion space for LBA64 : %u\n",
1207 __le32_to_cpu(migr_rec
->post_migr_vol_cap_hi
));
1208 printf(" Record was read from : %u\n",
1209 __le32_to_cpu(migr_rec
->ckpt_read_disk_num
));
1214 #endif /* MDASSEMBLE */
1215 /*******************************************************************************
1216 * function: imsm_check_attributes
1217 * Description: Function checks if features represented by attributes flags
1218 * are supported by mdadm.
1220 * attributes - Attributes read from metadata
1222 * 0 - passed attributes contains unsupported features flags
1223 * 1 - all features are supported
1224 ******************************************************************************/
1225 static int imsm_check_attributes(__u32 attributes
)
1228 __u32 not_supported
= MPB_ATTRIB_SUPPORTED
^0xffffffff;
1230 not_supported
&= ~MPB_ATTRIB_IGNORED
;
1232 not_supported
&= attributes
;
1233 if (not_supported
) {
1234 fprintf(stderr
, Name
"(IMSM): Unsupported attributes : %x\n",
1235 (unsigned)__le32_to_cpu(not_supported
));
1236 if (not_supported
& MPB_ATTRIB_CHECKSUM_VERIFY
) {
1237 dprintf("\t\tMPB_ATTRIB_CHECKSUM_VERIFY \n");
1238 not_supported
^= MPB_ATTRIB_CHECKSUM_VERIFY
;
1240 if (not_supported
& MPB_ATTRIB_2TB
) {
1241 dprintf("\t\tMPB_ATTRIB_2TB\n");
1242 not_supported
^= MPB_ATTRIB_2TB
;
1244 if (not_supported
& MPB_ATTRIB_RAID0
) {
1245 dprintf("\t\tMPB_ATTRIB_RAID0\n");
1246 not_supported
^= MPB_ATTRIB_RAID0
;
1248 if (not_supported
& MPB_ATTRIB_RAID1
) {
1249 dprintf("\t\tMPB_ATTRIB_RAID1\n");
1250 not_supported
^= MPB_ATTRIB_RAID1
;
1252 if (not_supported
& MPB_ATTRIB_RAID10
) {
1253 dprintf("\t\tMPB_ATTRIB_RAID10\n");
1254 not_supported
^= MPB_ATTRIB_RAID10
;
1256 if (not_supported
& MPB_ATTRIB_RAID1E
) {
1257 dprintf("\t\tMPB_ATTRIB_RAID1E\n");
1258 not_supported
^= MPB_ATTRIB_RAID1E
;
1260 if (not_supported
& MPB_ATTRIB_RAID5
) {
1261 dprintf("\t\tMPB_ATTRIB_RAID5\n");
1262 not_supported
^= MPB_ATTRIB_RAID5
;
1264 if (not_supported
& MPB_ATTRIB_RAIDCNG
) {
1265 dprintf("\t\tMPB_ATTRIB_RAIDCNG\n");
1266 not_supported
^= MPB_ATTRIB_RAIDCNG
;
1268 if (not_supported
& MPB_ATTRIB_BBM
) {
1269 dprintf("\t\tMPB_ATTRIB_BBM\n");
1270 not_supported
^= MPB_ATTRIB_BBM
;
1272 if (not_supported
& MPB_ATTRIB_CHECKSUM_VERIFY
) {
1273 dprintf("\t\tMPB_ATTRIB_CHECKSUM_VERIFY (== MPB_ATTRIB_LEGACY)\n");
1274 not_supported
^= MPB_ATTRIB_CHECKSUM_VERIFY
;
1276 if (not_supported
& MPB_ATTRIB_EXP_STRIPE_SIZE
) {
1277 dprintf("\t\tMPB_ATTRIB_EXP_STRIP_SIZE\n");
1278 not_supported
^= MPB_ATTRIB_EXP_STRIPE_SIZE
;
1280 if (not_supported
& MPB_ATTRIB_2TB_DISK
) {
1281 dprintf("\t\tMPB_ATTRIB_2TB_DISK\n");
1282 not_supported
^= MPB_ATTRIB_2TB_DISK
;
1284 if (not_supported
& MPB_ATTRIB_NEVER_USE2
) {
1285 dprintf("\t\tMPB_ATTRIB_NEVER_USE2\n");
1286 not_supported
^= MPB_ATTRIB_NEVER_USE2
;
1288 if (not_supported
& MPB_ATTRIB_NEVER_USE
) {
1289 dprintf("\t\tMPB_ATTRIB_NEVER_USE\n");
1290 not_supported
^= MPB_ATTRIB_NEVER_USE
;
1294 dprintf(Name
"(IMSM): Unknown attributes : %x\n", not_supported
);
1303 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
, char *map
);
1305 static void examine_super_imsm(struct supertype
*st
, char *homehost
)
1307 struct intel_super
*super
= st
->sb
;
1308 struct imsm_super
*mpb
= super
->anchor
;
1309 char str
[MAX_SIGNATURE_LENGTH
];
1314 __u32 reserved
= imsm_reserved_sectors(super
, super
->disks
);
1317 snprintf(str
, MPB_SIG_LEN
, "%s", mpb
->sig
);
1318 printf(" Magic : %s\n", str
);
1319 snprintf(str
, strlen(MPB_VERSION_RAID0
), "%s", get_imsm_version(mpb
));
1320 printf(" Version : %s\n", get_imsm_version(mpb
));
1321 printf(" Orig Family : %08x\n", __le32_to_cpu(mpb
->orig_family_num
));
1322 printf(" Family : %08x\n", __le32_to_cpu(mpb
->family_num
));
1323 printf(" Generation : %08x\n", __le32_to_cpu(mpb
->generation_num
));
1324 printf(" Attributes : ");
1325 if (imsm_check_attributes(mpb
->attributes
))
1326 printf("All supported\n");
1328 printf("not supported\n");
1329 getinfo_super_imsm(st
, &info
, NULL
);
1330 fname_from_uuid(st
, &info
, nbuf
, ':');
1331 printf(" UUID : %s\n", nbuf
+ 5);
1332 sum
= __le32_to_cpu(mpb
->check_sum
);
1333 printf(" Checksum : %08x %s\n", sum
,
1334 __gen_imsm_checksum(mpb
) == sum
? "correct" : "incorrect");
1335 printf(" MPB Sectors : %d\n", mpb_sectors(mpb
));
1336 printf(" Disks : %d\n", mpb
->num_disks
);
1337 printf(" RAID Devices : %d\n", mpb
->num_raid_devs
);
1338 print_imsm_disk(__get_imsm_disk(mpb
, super
->disks
->index
), super
->disks
->index
, reserved
);
1339 if (super
->bbm_log
) {
1340 struct bbm_log
*log
= super
->bbm_log
;
1343 printf("Bad Block Management Log:\n");
1344 printf(" Log Size : %d\n", __le32_to_cpu(mpb
->bbm_log_size
));
1345 printf(" Signature : %x\n", __le32_to_cpu(log
->signature
));
1346 printf(" Entry Count : %d\n", __le32_to_cpu(log
->entry_count
));
1347 printf(" Spare Blocks : %d\n", __le32_to_cpu(log
->reserved_spare_block_count
));
1348 printf(" First Spare : %llx\n",
1349 (unsigned long long) __le64_to_cpu(log
->first_spare_lba
));
1351 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
1353 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
1355 super
->current_vol
= i
;
1356 getinfo_super_imsm(st
, &info
, NULL
);
1357 fname_from_uuid(st
, &info
, nbuf
, ':');
1358 print_imsm_dev(super
, dev
, nbuf
+ 5, super
->disks
->index
);
1360 for (i
= 0; i
< mpb
->num_disks
; i
++) {
1361 if (i
== super
->disks
->index
)
1363 print_imsm_disk(__get_imsm_disk(mpb
, i
), i
, reserved
);
1366 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
1367 if (dl
->index
== -1)
1368 print_imsm_disk(&dl
->disk
, -1, reserved
);
1370 examine_migr_rec_imsm(super
);
1373 static void brief_examine_super_imsm(struct supertype
*st
, int verbose
)
1375 /* We just write a generic IMSM ARRAY entry */
1378 struct intel_super
*super
= st
->sb
;
1380 if (!super
->anchor
->num_raid_devs
) {
1381 printf("ARRAY metadata=imsm\n");
1385 getinfo_super_imsm(st
, &info
, NULL
);
1386 fname_from_uuid(st
, &info
, nbuf
, ':');
1387 printf("ARRAY metadata=imsm UUID=%s\n", nbuf
+ 5);
1390 static void brief_examine_subarrays_imsm(struct supertype
*st
, int verbose
)
1392 /* We just write a generic IMSM ARRAY entry */
1396 struct intel_super
*super
= st
->sb
;
1399 if (!super
->anchor
->num_raid_devs
)
1402 getinfo_super_imsm(st
, &info
, NULL
);
1403 fname_from_uuid(st
, &info
, nbuf
, ':');
1404 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
1405 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
1407 super
->current_vol
= i
;
1408 getinfo_super_imsm(st
, &info
, NULL
);
1409 fname_from_uuid(st
, &info
, nbuf1
, ':');
1410 printf("ARRAY /dev/md/%.16s container=%s member=%d UUID=%s\n",
1411 dev
->volume
, nbuf
+ 5, i
, nbuf1
+ 5);
1415 static void export_examine_super_imsm(struct supertype
*st
)
1417 struct intel_super
*super
= st
->sb
;
1418 struct imsm_super
*mpb
= super
->anchor
;
1422 getinfo_super_imsm(st
, &info
, NULL
);
1423 fname_from_uuid(st
, &info
, nbuf
, ':');
1424 printf("MD_METADATA=imsm\n");
1425 printf("MD_LEVEL=container\n");
1426 printf("MD_UUID=%s\n", nbuf
+5);
1427 printf("MD_DEVICES=%u\n", mpb
->num_disks
);
1430 static void detail_super_imsm(struct supertype
*st
, char *homehost
)
1435 getinfo_super_imsm(st
, &info
, NULL
);
1436 fname_from_uuid(st
, &info
, nbuf
, ':');
1437 printf("\n UUID : %s\n", nbuf
+ 5);
1440 static void brief_detail_super_imsm(struct supertype
*st
)
1444 getinfo_super_imsm(st
, &info
, NULL
);
1445 fname_from_uuid(st
, &info
, nbuf
, ':');
1446 printf(" UUID=%s", nbuf
+ 5);
1449 static int imsm_read_serial(int fd
, char *devname
, __u8
*serial
);
1450 static void fd2devname(int fd
, char *name
);
1452 static int ahci_enumerate_ports(const char *hba_path
, int port_count
, int host_base
, int verbose
)
1454 /* dump an unsorted list of devices attached to AHCI Intel storage
1455 * controller, as well as non-connected ports
1457 int hba_len
= strlen(hba_path
) + 1;
1462 unsigned long port_mask
= (1 << port_count
) - 1;
1464 if (port_count
> (int)sizeof(port_mask
) * 8) {
1466 fprintf(stderr
, Name
": port_count %d out of range\n", port_count
);
1470 /* scroll through /sys/dev/block looking for devices attached to
1473 dir
= opendir("/sys/dev/block");
1474 for (ent
= dir
? readdir(dir
) : NULL
; ent
; ent
= readdir(dir
)) {
1485 if (sscanf(ent
->d_name
, "%d:%d", &major
, &minor
) != 2)
1487 path
= devt_to_devpath(makedev(major
, minor
));
1490 if (!path_attached_to_hba(path
, hba_path
)) {
1496 /* retrieve the scsi device type */
1497 if (asprintf(&device
, "/sys/dev/block/%d:%d/device/xxxxxxx", major
, minor
) < 0) {
1499 fprintf(stderr
, Name
": failed to allocate 'device'\n");
1503 sprintf(device
, "/sys/dev/block/%d:%d/device/type", major
, minor
);
1504 if (load_sys(device
, buf
) != 0) {
1506 fprintf(stderr
, Name
": failed to read device type for %s\n",
1512 type
= strtoul(buf
, NULL
, 10);
1514 /* if it's not a disk print the vendor and model */
1515 if (!(type
== 0 || type
== 7 || type
== 14)) {
1518 sprintf(device
, "/sys/dev/block/%d:%d/device/vendor", major
, minor
);
1519 if (load_sys(device
, buf
) == 0) {
1520 strncpy(vendor
, buf
, sizeof(vendor
));
1521 vendor
[sizeof(vendor
) - 1] = '\0';
1522 c
= (char *) &vendor
[sizeof(vendor
) - 1];
1523 while (isspace(*c
) || *c
== '\0')
1527 sprintf(device
, "/sys/dev/block/%d:%d/device/model", major
, minor
);
1528 if (load_sys(device
, buf
) == 0) {
1529 strncpy(model
, buf
, sizeof(model
));
1530 model
[sizeof(model
) - 1] = '\0';
1531 c
= (char *) &model
[sizeof(model
) - 1];
1532 while (isspace(*c
) || *c
== '\0')
1536 if (vendor
[0] && model
[0])
1537 sprintf(buf
, "%.64s %.64s", vendor
, model
);
1539 switch (type
) { /* numbers from hald/linux/device.c */
1540 case 1: sprintf(buf
, "tape"); break;
1541 case 2: sprintf(buf
, "printer"); break;
1542 case 3: sprintf(buf
, "processor"); break;
1544 case 5: sprintf(buf
, "cdrom"); break;
1545 case 6: sprintf(buf
, "scanner"); break;
1546 case 8: sprintf(buf
, "media_changer"); break;
1547 case 9: sprintf(buf
, "comm"); break;
1548 case 12: sprintf(buf
, "raid"); break;
1549 default: sprintf(buf
, "unknown");
1555 /* chop device path to 'host%d' and calculate the port number */
1556 c
= strchr(&path
[hba_len
], '/');
1559 fprintf(stderr
, Name
": %s - invalid path name\n", path
+ hba_len
);
1564 if (sscanf(&path
[hba_len
], "host%d", &port
) == 1)
1568 *c
= '/'; /* repair the full string */
1569 fprintf(stderr
, Name
": failed to determine port number for %s\n",
1576 /* mark this port as used */
1577 port_mask
&= ~(1 << port
);
1579 /* print out the device information */
1581 printf(" Port%d : - non-disk device (%s) -\n", port
, buf
);
1585 fd
= dev_open(ent
->d_name
, O_RDONLY
);
1587 printf(" Port%d : - disk info unavailable -\n", port
);
1589 fd2devname(fd
, buf
);
1590 printf(" Port%d : %s", port
, buf
);
1591 if (imsm_read_serial(fd
, NULL
, (__u8
*) buf
) == 0)
1592 printf(" (%.*s)\n", MAX_RAID_SERIAL_LEN
, buf
);
1607 for (i
= 0; i
< port_count
; i
++)
1608 if (port_mask
& (1 << i
))
1609 printf(" Port%d : - no device attached -\n", i
);
1615 static void print_found_intel_controllers(struct sys_dev
*elem
)
1617 for (; elem
; elem
= elem
->next
) {
1618 fprintf(stderr
, Name
": found Intel(R) ");
1619 if (elem
->type
== SYS_DEV_SATA
)
1620 fprintf(stderr
, "SATA ");
1621 else if (elem
->type
== SYS_DEV_SAS
)
1622 fprintf(stderr
, "SAS ");
1623 fprintf(stderr
, "RAID controller");
1625 fprintf(stderr
, " at %s", elem
->pci_id
);
1626 fprintf(stderr
, ".\n");
1631 static int ahci_get_port_count(const char *hba_path
, int *port_count
)
1638 if ((dir
= opendir(hba_path
)) == NULL
)
1641 for (ent
= readdir(dir
); ent
; ent
= readdir(dir
)) {
1644 if (sscanf(ent
->d_name
, "host%d", &host
) != 1)
1646 if (*port_count
== 0)
1648 else if (host
< host_base
)
1651 if (host
+ 1 > *port_count
+ host_base
)
1652 *port_count
= host
+ 1 - host_base
;
1658 static void print_imsm_capability(const struct imsm_orom
*orom
)
1660 printf(" Platform : Intel(R) Matrix Storage Manager\n");
1661 printf(" Version : %d.%d.%d.%d\n", orom
->major_ver
, orom
->minor_ver
,
1662 orom
->hotfix_ver
, orom
->build
);
1663 printf(" RAID Levels :%s%s%s%s%s\n",
1664 imsm_orom_has_raid0(orom
) ? " raid0" : "",
1665 imsm_orom_has_raid1(orom
) ? " raid1" : "",
1666 imsm_orom_has_raid1e(orom
) ? " raid1e" : "",
1667 imsm_orom_has_raid10(orom
) ? " raid10" : "",
1668 imsm_orom_has_raid5(orom
) ? " raid5" : "");
1669 printf(" Chunk Sizes :%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
1670 imsm_orom_has_chunk(orom
, 2) ? " 2k" : "",
1671 imsm_orom_has_chunk(orom
, 4) ? " 4k" : "",
1672 imsm_orom_has_chunk(orom
, 8) ? " 8k" : "",
1673 imsm_orom_has_chunk(orom
, 16) ? " 16k" : "",
1674 imsm_orom_has_chunk(orom
, 32) ? " 32k" : "",
1675 imsm_orom_has_chunk(orom
, 64) ? " 64k" : "",
1676 imsm_orom_has_chunk(orom
, 128) ? " 128k" : "",
1677 imsm_orom_has_chunk(orom
, 256) ? " 256k" : "",
1678 imsm_orom_has_chunk(orom
, 512) ? " 512k" : "",
1679 imsm_orom_has_chunk(orom
, 1024*1) ? " 1M" : "",
1680 imsm_orom_has_chunk(orom
, 1024*2) ? " 2M" : "",
1681 imsm_orom_has_chunk(orom
, 1024*4) ? " 4M" : "",
1682 imsm_orom_has_chunk(orom
, 1024*8) ? " 8M" : "",
1683 imsm_orom_has_chunk(orom
, 1024*16) ? " 16M" : "",
1684 imsm_orom_has_chunk(orom
, 1024*32) ? " 32M" : "",
1685 imsm_orom_has_chunk(orom
, 1024*64) ? " 64M" : "");
1686 printf(" Max Disks : %d\n", orom
->tds
);
1687 printf(" Max Volumes : %d\n", orom
->vpa
);
1691 static int detail_platform_imsm(int verbose
, int enumerate_only
)
1693 /* There are two components to imsm platform support, the ahci SATA
1694 * controller and the option-rom. To find the SATA controller we
1695 * simply look in /sys/bus/pci/drivers/ahci to see if an ahci
1696 * controller with the Intel vendor id is present. This approach
1697 * allows mdadm to leverage the kernel's ahci detection logic, with the
1698 * caveat that if ahci.ko is not loaded mdadm will not be able to
1699 * detect platform raid capabilities. The option-rom resides in a
1700 * platform "Adapter ROM". We scan for its signature to retrieve the
1701 * platform capabilities. If raid support is disabled in the BIOS the
1702 * option-rom capability structure will not be available.
1704 const struct imsm_orom
*orom
;
1705 struct sys_dev
*list
, *hba
;
1710 if (enumerate_only
) {
1711 if (check_env("IMSM_NO_PLATFORM"))
1713 list
= find_intel_devices();
1716 for (hba
= list
; hba
; hba
= hba
->next
) {
1717 orom
= find_imsm_capability(hba
->type
);
1723 free_sys_dev(&list
);
1727 list
= find_intel_devices();
1730 fprintf(stderr
, Name
": no active Intel(R) RAID "
1731 "controller found.\n");
1732 free_sys_dev(&list
);
1735 print_found_intel_controllers(list
);
1737 for (hba
= list
; hba
; hba
= hba
->next
) {
1738 orom
= find_imsm_capability(hba
->type
);
1740 fprintf(stderr
, Name
": imsm capabilities not found for controller: %s (type %s)\n",
1741 hba
->path
, get_sys_dev_type(hba
->type
));
1743 print_imsm_capability(orom
);
1746 for (hba
= list
; hba
; hba
= hba
->next
) {
1747 printf(" I/O Controller : %s (%s)\n",
1748 hba
->path
, get_sys_dev_type(hba
->type
));
1750 if (hba
->type
== SYS_DEV_SATA
) {
1751 host_base
= ahci_get_port_count(hba
->path
, &port_count
);
1752 if (ahci_enumerate_ports(hba
->path
, port_count
, host_base
, verbose
)) {
1754 fprintf(stderr
, Name
": failed to enumerate "
1755 "ports on SATA controller at %s.", hba
->pci_id
);
1761 free_sys_dev(&list
);
1766 static int match_home_imsm(struct supertype
*st
, char *homehost
)
1768 /* the imsm metadata format does not specify any host
1769 * identification information. We return -1 since we can never
1770 * confirm nor deny whether a given array is "meant" for this
1771 * host. We rely on compare_super and the 'family_num' fields to
1772 * exclude member disks that do not belong, and we rely on
1773 * mdadm.conf to specify the arrays that should be assembled.
1774 * Auto-assembly may still pick up "foreign" arrays.
1780 static void uuid_from_super_imsm(struct supertype
*st
, int uuid
[4])
1782 /* The uuid returned here is used for:
1783 * uuid to put into bitmap file (Create, Grow)
1784 * uuid for backup header when saving critical section (Grow)
1785 * comparing uuids when re-adding a device into an array
1786 * In these cases the uuid required is that of the data-array,
1787 * not the device-set.
1788 * uuid to recognise same set when adding a missing device back
1789 * to an array. This is a uuid for the device-set.
1791 * For each of these we can make do with a truncated
1792 * or hashed uuid rather than the original, as long as
1794 * In each case the uuid required is that of the data-array,
1795 * not the device-set.
1797 /* imsm does not track uuid's so we synthesis one using sha1 on
1798 * - The signature (Which is constant for all imsm array, but no matter)
1799 * - the orig_family_num of the container
1800 * - the index number of the volume
1801 * - the 'serial' number of the volume.
1802 * Hopefully these are all constant.
1804 struct intel_super
*super
= st
->sb
;
1807 struct sha1_ctx ctx
;
1808 struct imsm_dev
*dev
= NULL
;
1811 /* some mdadm versions failed to set ->orig_family_num, in which
1812 * case fall back to ->family_num. orig_family_num will be
1813 * fixed up with the first metadata update.
1815 family_num
= super
->anchor
->orig_family_num
;
1816 if (family_num
== 0)
1817 family_num
= super
->anchor
->family_num
;
1818 sha1_init_ctx(&ctx
);
1819 sha1_process_bytes(super
->anchor
->sig
, MPB_SIG_LEN
, &ctx
);
1820 sha1_process_bytes(&family_num
, sizeof(__u32
), &ctx
);
1821 if (super
->current_vol
>= 0)
1822 dev
= get_imsm_dev(super
, super
->current_vol
);
1824 __u32 vol
= super
->current_vol
;
1825 sha1_process_bytes(&vol
, sizeof(vol
), &ctx
);
1826 sha1_process_bytes(dev
->volume
, MAX_RAID_SERIAL_LEN
, &ctx
);
1828 sha1_finish_ctx(&ctx
, buf
);
1829 memcpy(uuid
, buf
, 4*4);
1834 get_imsm_numerical_version(struct imsm_super
*mpb
, int *m
, int *p
)
1836 __u8
*v
= get_imsm_version(mpb
);
1837 __u8
*end
= mpb
->sig
+ MAX_SIGNATURE_LENGTH
;
1838 char major
[] = { 0, 0, 0 };
1839 char minor
[] = { 0 ,0, 0 };
1840 char patch
[] = { 0, 0, 0 };
1841 char *ver_parse
[] = { major
, minor
, patch
};
1845 while (*v
!= '\0' && v
< end
) {
1846 if (*v
!= '.' && j
< 2)
1847 ver_parse
[i
][j
++] = *v
;
1855 *m
= strtol(minor
, NULL
, 0);
1856 *p
= strtol(patch
, NULL
, 0);
1860 static __u32
migr_strip_blocks_resync(struct imsm_dev
*dev
)
1862 /* migr_strip_size when repairing or initializing parity */
1863 struct imsm_map
*map
= get_imsm_map(dev
, 0);
1864 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
1866 switch (get_imsm_raid_level(map
)) {
1871 return 128*1024 >> 9;
1875 static __u32
migr_strip_blocks_rebuild(struct imsm_dev
*dev
)
1877 /* migr_strip_size when rebuilding a degraded disk, no idea why
1878 * this is different than migr_strip_size_resync(), but it's good
1881 struct imsm_map
*map
= get_imsm_map(dev
, 1);
1882 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
1884 switch (get_imsm_raid_level(map
)) {
1887 if (map
->num_members
% map
->num_domains
== 0)
1888 return 128*1024 >> 9;
1892 return max((__u32
) 64*1024 >> 9, chunk
);
1894 return 128*1024 >> 9;
1898 static __u32
num_stripes_per_unit_resync(struct imsm_dev
*dev
)
1900 struct imsm_map
*lo
= get_imsm_map(dev
, 0);
1901 struct imsm_map
*hi
= get_imsm_map(dev
, 1);
1902 __u32 lo_chunk
= __le32_to_cpu(lo
->blocks_per_strip
);
1903 __u32 hi_chunk
= __le32_to_cpu(hi
->blocks_per_strip
);
1905 return max((__u32
) 1, hi_chunk
/ lo_chunk
);
1908 static __u32
num_stripes_per_unit_rebuild(struct imsm_dev
*dev
)
1910 struct imsm_map
*lo
= get_imsm_map(dev
, 0);
1911 int level
= get_imsm_raid_level(lo
);
1913 if (level
== 1 || level
== 10) {
1914 struct imsm_map
*hi
= get_imsm_map(dev
, 1);
1916 return hi
->num_domains
;
1918 return num_stripes_per_unit_resync(dev
);
1921 static __u8
imsm_num_data_members(struct imsm_dev
*dev
, int second_map
)
1923 /* named 'imsm_' because raid0, raid1 and raid10
1924 * counter-intuitively have the same number of data disks
1926 struct imsm_map
*map
= get_imsm_map(dev
, second_map
);
1928 switch (get_imsm_raid_level(map
)) {
1932 return map
->num_members
;
1934 return map
->num_members
- 1;
1936 dprintf("%s: unsupported raid level\n", __func__
);
1941 static __u32
parity_segment_depth(struct imsm_dev
*dev
)
1943 struct imsm_map
*map
= get_imsm_map(dev
, 0);
1944 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
1946 switch(get_imsm_raid_level(map
)) {
1949 return chunk
* map
->num_domains
;
1951 return chunk
* map
->num_members
;
1957 static __u32
map_migr_block(struct imsm_dev
*dev
, __u32 block
)
1959 struct imsm_map
*map
= get_imsm_map(dev
, 1);
1960 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
1961 __u32 strip
= block
/ chunk
;
1963 switch (get_imsm_raid_level(map
)) {
1966 __u32 vol_strip
= (strip
* map
->num_domains
) + 1;
1967 __u32 vol_stripe
= vol_strip
/ map
->num_members
;
1969 return vol_stripe
* chunk
+ block
% chunk
;
1971 __u32 stripe
= strip
/ (map
->num_members
- 1);
1973 return stripe
* chunk
+ block
% chunk
;
1980 static __u64
blocks_per_migr_unit(struct intel_super
*super
,
1981 struct imsm_dev
*dev
)
1983 /* calculate the conversion factor between per member 'blocks'
1984 * (md/{resync,rebuild}_start) and imsm migration units, return
1985 * 0 for the 'not migrating' and 'unsupported migration' cases
1987 if (!dev
->vol
.migr_state
)
1990 switch (migr_type(dev
)) {
1991 case MIGR_GEN_MIGR
: {
1992 struct migr_record
*migr_rec
= super
->migr_rec
;
1993 return __le32_to_cpu(migr_rec
->blocks_per_unit
);
1998 struct imsm_map
*map
= get_imsm_map(dev
, 0);
1999 __u32 stripes_per_unit
;
2000 __u32 blocks_per_unit
;
2009 /* yes, this is really the translation of migr_units to
2010 * per-member blocks in the 'resync' case
2012 stripes_per_unit
= num_stripes_per_unit_resync(dev
);
2013 migr_chunk
= migr_strip_blocks_resync(dev
);
2014 disks
= imsm_num_data_members(dev
, 0);
2015 blocks_per_unit
= stripes_per_unit
* migr_chunk
* disks
;
2016 stripe
= __le16_to_cpu(map
->blocks_per_strip
) * disks
;
2017 segment
= blocks_per_unit
/ stripe
;
2018 block_rel
= blocks_per_unit
- segment
* stripe
;
2019 parity_depth
= parity_segment_depth(dev
);
2020 block_map
= map_migr_block(dev
, block_rel
);
2021 return block_map
+ parity_depth
* segment
;
2023 case MIGR_REBUILD
: {
2024 __u32 stripes_per_unit
;
2027 stripes_per_unit
= num_stripes_per_unit_rebuild(dev
);
2028 migr_chunk
= migr_strip_blocks_rebuild(dev
);
2029 return migr_chunk
* stripes_per_unit
;
2031 case MIGR_STATE_CHANGE
:
2037 static int imsm_level_to_layout(int level
)
2045 return ALGORITHM_LEFT_ASYMMETRIC
;
2052 /*******************************************************************************
2053 * Function: read_imsm_migr_rec
2054 * Description: Function reads imsm migration record from last sector of disk
2056 * fd : disk descriptor
2057 * super : metadata info
2061 ******************************************************************************/
2062 static int read_imsm_migr_rec(int fd
, struct intel_super
*super
)
2065 unsigned long long dsize
;
2067 get_dev_size(fd
, NULL
, &dsize
);
2068 if (lseek64(fd
, dsize
- 512, SEEK_SET
) < 0) {
2070 Name
": Cannot seek to anchor block: %s\n",
2074 if (read(fd
, super
->migr_rec_buf
, 512) != 512) {
2076 Name
": Cannot read migr record block: %s\n",
2086 /*******************************************************************************
2087 * Function: load_imsm_migr_rec
2088 * Description: Function reads imsm migration record (it is stored at the last
2091 * super : imsm internal array info
2092 * info : general array info
2096 ******************************************************************************/
2097 static int load_imsm_migr_rec(struct intel_super
*super
, struct mdinfo
*info
)
2100 struct dl
*dl
= NULL
;
2106 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
2107 /* read only from one of the first two slots */
2108 if ((sd
->disk
.raid_disk
> 1) ||
2109 (sd
->disk
.raid_disk
< 0))
2111 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
2112 fd
= dev_open(nm
, O_RDONLY
);
2118 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
2119 /* read only from one of the first two slots */
2122 sprintf(nm
, "%d:%d", dl
->major
, dl
->minor
);
2123 fd
= dev_open(nm
, O_RDONLY
);
2130 retval
= read_imsm_migr_rec(fd
, super
);
2139 /*******************************************************************************
2140 * function: imsm_create_metadata_checkpoint_update
2141 * Description: It creates update for checkpoint change.
2143 * super : imsm internal array info
2144 * u : pointer to prepared update
2147 * If length is equal to 0, input pointer u contains no update
2148 ******************************************************************************/
2149 static int imsm_create_metadata_checkpoint_update(
2150 struct intel_super
*super
,
2151 struct imsm_update_general_migration_checkpoint
**u
)
2154 int update_memory_size
= 0;
2156 dprintf("imsm_create_metadata_checkpoint_update(enter)\n");
2162 /* size of all update data without anchor */
2163 update_memory_size
=
2164 sizeof(struct imsm_update_general_migration_checkpoint
);
2166 *u
= calloc(1, update_memory_size
);
2168 dprintf("error: cannot get memory for "
2169 "imsm_create_metadata_checkpoint_update update\n");
2172 (*u
)->type
= update_general_migration_checkpoint
;
2173 (*u
)->curr_migr_unit
= __le32_to_cpu(super
->migr_rec
->curr_migr_unit
);
2174 dprintf("imsm_create_metadata_checkpoint_update: prepared for %u\n",
2175 (*u
)->curr_migr_unit
);
2177 return update_memory_size
;
2181 static void imsm_update_metadata_locally(struct supertype
*st
,
2182 void *buf
, int len
);
2184 /*******************************************************************************
2185 * Function: write_imsm_migr_rec
2186 * Description: Function writes imsm migration record
2187 * (at the last sector of disk)
2189 * super : imsm internal array info
2193 ******************************************************************************/
2194 static int write_imsm_migr_rec(struct supertype
*st
)
2196 struct intel_super
*super
= st
->sb
;
2197 unsigned long long dsize
;
2203 struct imsm_update_general_migration_checkpoint
*u
;
2205 for (sd
= super
->disks
; sd
; sd
= sd
->next
) {
2206 /* write to 2 first slots only */
2207 if ((sd
->index
< 0) || (sd
->index
> 1))
2209 sprintf(nm
, "%d:%d", sd
->major
, sd
->minor
);
2210 fd
= dev_open(nm
, O_RDWR
);
2213 get_dev_size(fd
, NULL
, &dsize
);
2214 if (lseek64(fd
, dsize
- 512, SEEK_SET
) < 0) {
2216 Name
": Cannot seek to anchor block: %s\n",
2220 if (write(fd
, super
->migr_rec_buf
, 512) != 512) {
2222 Name
": Cannot write migr record block: %s\n",
2229 /* update checkpoint information in metadata */
2230 len
= imsm_create_metadata_checkpoint_update(super
, &u
);
2233 dprintf("imsm: Cannot prepare update\n");
2236 /* update metadata locally */
2237 imsm_update_metadata_locally(st
, u
, len
);
2238 /* and possibly remotely */
2239 if (st
->update_tail
) {
2240 append_metadata_update(st
, u
, len
);
2241 /* during reshape we do all work inside metadata handler
2242 * manage_reshape(), so metadata update has to be triggered
2245 flush_metadata_updates(st
);
2246 st
->update_tail
= &st
->updates
;
2256 #endif /* MDASSEMBLE */
2258 /* spare/missing disks activations are not allowe when
2259 * array/container performs reshape operation, because
2260 * all arrays in container works on the same disks set
2262 int imsm_reshape_blocks_arrays_changes(struct intel_super
*super
)
2265 struct intel_dev
*i_dev
;
2266 struct imsm_dev
*dev
;
2268 /* check whole container
2270 for (i_dev
= super
->devlist
; i_dev
; i_dev
= i_dev
->next
) {
2272 if (is_gen_migration(dev
)) {
2273 /* No repair during any migration in container
2282 static void getinfo_super_imsm_volume(struct supertype
*st
, struct mdinfo
*info
, char *dmap
)
2284 struct intel_super
*super
= st
->sb
;
2285 struct migr_record
*migr_rec
= super
->migr_rec
;
2286 struct imsm_dev
*dev
= get_imsm_dev(super
, super
->current_vol
);
2287 struct imsm_map
*map
= get_imsm_map(dev
, 0);
2288 struct imsm_map
*prev_map
= get_imsm_map(dev
, 1);
2289 struct imsm_map
*map_to_analyse
= map
;
2292 unsigned int component_size_alligment
;
2293 int map_disks
= info
->array
.raid_disks
;
2295 memset(info
, 0, sizeof(*info
));
2297 map_to_analyse
= prev_map
;
2299 dl
= super
->current_disk
;
2301 info
->container_member
= super
->current_vol
;
2302 info
->array
.raid_disks
= map
->num_members
;
2303 info
->array
.level
= get_imsm_raid_level(map_to_analyse
);
2304 info
->array
.layout
= imsm_level_to_layout(info
->array
.level
);
2305 info
->array
.md_minor
= -1;
2306 info
->array
.ctime
= 0;
2307 info
->array
.utime
= 0;
2308 info
->array
.chunk_size
=
2309 __le16_to_cpu(map_to_analyse
->blocks_per_strip
) << 9;
2310 info
->array
.state
= !dev
->vol
.dirty
;
2311 info
->custom_array_size
= __le32_to_cpu(dev
->size_high
);
2312 info
->custom_array_size
<<= 32;
2313 info
->custom_array_size
|= __le32_to_cpu(dev
->size_low
);
2314 info
->recovery_blocked
= imsm_reshape_blocks_arrays_changes(st
->sb
);
2316 if (prev_map
&& map
->map_state
== prev_map
->map_state
&&
2317 (migr_type(dev
) == MIGR_GEN_MIGR
)) {
2318 info
->reshape_active
= 1;
2319 info
->new_level
= get_imsm_raid_level(map
);
2320 info
->new_layout
= imsm_level_to_layout(info
->new_level
);
2321 info
->new_chunk
= __le16_to_cpu(map
->blocks_per_strip
) << 9;
2322 info
->delta_disks
= map
->num_members
- prev_map
->num_members
;
2323 if (info
->delta_disks
) {
2324 /* this needs to be applied to every array
2327 info
->reshape_active
= CONTAINER_RESHAPE
;
2329 /* We shape information that we give to md might have to be
2330 * modify to cope with md's requirement for reshaping arrays.
2331 * For example, when reshaping a RAID0, md requires it to be
2332 * presented as a degraded RAID4.
2333 * Also if a RAID0 is migrating to a RAID5 we need to specify
2334 * the array as already being RAID5, but the 'before' layout
2335 * is a RAID4-like layout.
2337 switch (info
->array
.level
) {
2339 switch(info
->new_level
) {
2341 /* conversion is happening as RAID4 */
2342 info
->array
.level
= 4;
2343 info
->array
.raid_disks
+= 1;
2346 /* conversion is happening as RAID5 */
2347 info
->array
.level
= 5;
2348 info
->array
.layout
= ALGORITHM_PARITY_N
;
2349 info
->delta_disks
-= 1;
2352 /* FIXME error message */
2353 info
->array
.level
= UnSet
;
2359 info
->new_level
= UnSet
;
2360 info
->new_layout
= UnSet
;
2361 info
->new_chunk
= info
->array
.chunk_size
;
2362 info
->delta_disks
= 0;
2366 info
->disk
.major
= dl
->major
;
2367 info
->disk
.minor
= dl
->minor
;
2368 info
->disk
.number
= dl
->index
;
2369 info
->disk
.raid_disk
= get_imsm_disk_slot(map_to_analyse
,
2373 info
->data_offset
= __le32_to_cpu(map_to_analyse
->pba_of_lba0
);
2374 info
->component_size
=
2375 __le32_to_cpu(map_to_analyse
->blocks_per_member
);
2377 /* check component size aligment
2379 component_size_alligment
=
2380 info
->component_size
% (info
->array
.chunk_size
/512);
2382 if (component_size_alligment
&&
2383 (info
->array
.level
!= 1) && (info
->array
.level
!= UnSet
)) {
2384 dprintf("imsm: reported component size alligned from %llu ",
2385 info
->component_size
);
2386 info
->component_size
-= component_size_alligment
;
2387 dprintf("to %llu (%i).\n",
2388 info
->component_size
, component_size_alligment
);
2391 memset(info
->uuid
, 0, sizeof(info
->uuid
));
2392 info
->recovery_start
= MaxSector
;
2394 info
->reshape_progress
= 0;
2395 info
->resync_start
= MaxSector
;
2396 if ((map_to_analyse
->map_state
== IMSM_T_STATE_UNINITIALIZED
||
2398 imsm_reshape_blocks_arrays_changes(super
) == 0) {
2399 info
->resync_start
= 0;
2401 if (dev
->vol
.migr_state
) {
2402 switch (migr_type(dev
)) {
2405 __u64 blocks_per_unit
= blocks_per_migr_unit(super
,
2407 __u64 units
= __le32_to_cpu(dev
->vol
.curr_migr_unit
);
2409 info
->resync_start
= blocks_per_unit
* units
;
2412 case MIGR_GEN_MIGR
: {
2413 __u64 blocks_per_unit
= blocks_per_migr_unit(super
,
2415 __u64 units
= __le32_to_cpu(migr_rec
->curr_migr_unit
);
2416 unsigned long long array_blocks
;
2419 if (__le32_to_cpu(migr_rec
->ascending_migr
) &&
2421 (__le32_to_cpu(migr_rec
->num_migr_units
)-1)) &&
2422 (super
->migr_rec
->rec_status
==
2423 __cpu_to_le32(UNIT_SRC_IN_CP_AREA
)))
2426 info
->reshape_progress
= blocks_per_unit
* units
;
2428 dprintf("IMSM: General Migration checkpoint : %llu "
2429 "(%llu) -> read reshape progress : %llu\n",
2430 (unsigned long long)units
,
2431 (unsigned long long)blocks_per_unit
,
2432 info
->reshape_progress
);
2434 used_disks
= imsm_num_data_members(dev
, 1);
2435 if (used_disks
> 0) {
2436 array_blocks
= map
->blocks_per_member
*
2438 /* round array size down to closest MB
2440 info
->custom_array_size
= (array_blocks
2441 >> SECT_PER_MB_SHIFT
)
2442 << SECT_PER_MB_SHIFT
;
2446 /* we could emulate the checkpointing of
2447 * 'sync_action=check' migrations, but for now
2448 * we just immediately complete them
2451 /* this is handled by container_content_imsm() */
2452 case MIGR_STATE_CHANGE
:
2453 /* FIXME handle other migrations */
2455 /* we are not dirty, so... */
2456 info
->resync_start
= MaxSector
;
2460 strncpy(info
->name
, (char *) dev
->volume
, MAX_RAID_SERIAL_LEN
);
2461 info
->name
[MAX_RAID_SERIAL_LEN
] = 0;
2463 info
->array
.major_version
= -1;
2464 info
->array
.minor_version
= -2;
2465 devname
= devnum2devname(st
->container_dev
);
2466 *info
->text_version
= '\0';
2468 sprintf(info
->text_version
, "/%s/%d", devname
, info
->container_member
);
2470 info
->safe_mode_delay
= 4000; /* 4 secs like the Matrix driver */
2471 uuid_from_super_imsm(st
, info
->uuid
);
2475 for (i
=0; i
<map_disks
; i
++) {
2477 if (i
< info
->array
.raid_disks
) {
2478 struct imsm_disk
*dsk
;
2479 j
= get_imsm_disk_idx(dev
, i
, -1);
2480 dsk
= get_imsm_disk(super
, j
);
2481 if (dsk
&& (dsk
->status
& CONFIGURED_DISK
))
2488 static __u8
imsm_check_degraded(struct intel_super
*super
, struct imsm_dev
*dev
, int failed
);
2489 static int imsm_count_failed(struct intel_super
*super
, struct imsm_dev
*dev
);
2491 static struct imsm_disk
*get_imsm_missing(struct intel_super
*super
, __u8 index
)
2495 for (d
= super
->missing
; d
; d
= d
->next
)
2496 if (d
->index
== index
)
2501 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
, char *map
)
2503 struct intel_super
*super
= st
->sb
;
2504 struct imsm_disk
*disk
;
2505 int map_disks
= info
->array
.raid_disks
;
2506 int max_enough
= -1;
2508 struct imsm_super
*mpb
;
2510 if (super
->current_vol
>= 0) {
2511 getinfo_super_imsm_volume(st
, info
, map
);
2514 memset(info
, 0, sizeof(*info
));
2516 /* Set raid_disks to zero so that Assemble will always pull in valid
2519 info
->array
.raid_disks
= 0;
2520 info
->array
.level
= LEVEL_CONTAINER
;
2521 info
->array
.layout
= 0;
2522 info
->array
.md_minor
= -1;
2523 info
->array
.ctime
= 0; /* N/A for imsm */
2524 info
->array
.utime
= 0;
2525 info
->array
.chunk_size
= 0;
2527 info
->disk
.major
= 0;
2528 info
->disk
.minor
= 0;
2529 info
->disk
.raid_disk
= -1;
2530 info
->reshape_active
= 0;
2531 info
->array
.major_version
= -1;
2532 info
->array
.minor_version
= -2;
2533 strcpy(info
->text_version
, "imsm");
2534 info
->safe_mode_delay
= 0;
2535 info
->disk
.number
= -1;
2536 info
->disk
.state
= 0;
2538 info
->recovery_start
= MaxSector
;
2539 info
->recovery_blocked
= imsm_reshape_blocks_arrays_changes(st
->sb
);
2541 /* do we have the all the insync disks that we expect? */
2542 mpb
= super
->anchor
;
2544 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
2545 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
2546 int failed
, enough
, j
, missing
= 0;
2547 struct imsm_map
*map
;
2550 failed
= imsm_count_failed(super
, dev
);
2551 state
= imsm_check_degraded(super
, dev
, failed
);
2552 map
= get_imsm_map(dev
, 0);
2554 /* any newly missing disks?
2555 * (catches single-degraded vs double-degraded)
2557 for (j
= 0; j
< map
->num_members
; j
++) {
2558 __u32 ord
= get_imsm_ord_tbl_ent(dev
, j
, 0);
2559 __u32 idx
= ord_to_idx(ord
);
2561 if (!(ord
& IMSM_ORD_REBUILD
) &&
2562 get_imsm_missing(super
, idx
)) {
2568 if (state
== IMSM_T_STATE_FAILED
)
2570 else if (state
== IMSM_T_STATE_DEGRADED
&&
2571 (state
!= map
->map_state
|| missing
))
2573 else /* we're normal, or already degraded */
2576 /* in the missing/failed disk case check to see
2577 * if at least one array is runnable
2579 max_enough
= max(max_enough
, enough
);
2581 dprintf("%s: enough: %d\n", __func__
, max_enough
);
2582 info
->container_enough
= max_enough
;
2585 __u32 reserved
= imsm_reserved_sectors(super
, super
->disks
);
2587 disk
= &super
->disks
->disk
;
2588 info
->data_offset
= __le32_to_cpu(disk
->total_blocks
) - reserved
;
2589 info
->component_size
= reserved
;
2590 info
->disk
.state
= is_configured(disk
) ? (1 << MD_DISK_ACTIVE
) : 0;
2591 /* we don't change info->disk.raid_disk here because
2592 * this state will be finalized in mdmon after we have
2593 * found the 'most fresh' version of the metadata
2595 info
->disk
.state
|= is_failed(disk
) ? (1 << MD_DISK_FAULTY
) : 0;
2596 info
->disk
.state
|= is_spare(disk
) ? 0 : (1 << MD_DISK_SYNC
);
2599 /* only call uuid_from_super_imsm when this disk is part of a populated container,
2600 * ->compare_super may have updated the 'num_raid_devs' field for spares
2602 if (info
->disk
.state
& (1 << MD_DISK_SYNC
) || super
->anchor
->num_raid_devs
)
2603 uuid_from_super_imsm(st
, info
->uuid
);
2605 memcpy(info
->uuid
, uuid_zero
, sizeof(uuid_zero
));
2607 /* I don't know how to compute 'map' on imsm, so use safe default */
2610 for (i
= 0; i
< map_disks
; i
++)
2616 /* allocates memory and fills disk in mdinfo structure
2617 * for each disk in array */
2618 struct mdinfo
*getinfo_super_disks_imsm(struct supertype
*st
)
2620 struct mdinfo
*mddev
= NULL
;
2621 struct intel_super
*super
= st
->sb
;
2622 struct imsm_disk
*disk
;
2625 if (!super
|| !super
->disks
)
2628 mddev
= malloc(sizeof(*mddev
));
2630 fprintf(stderr
, Name
": Failed to allocate memory.\n");
2633 memset(mddev
, 0, sizeof(*mddev
));
2637 tmp
= malloc(sizeof(*tmp
));
2639 fprintf(stderr
, Name
": Failed to allocate memory.\n");
2644 memset(tmp
, 0, sizeof(*tmp
));
2646 tmp
->next
= mddev
->devs
;
2648 tmp
->disk
.number
= count
++;
2649 tmp
->disk
.major
= dl
->major
;
2650 tmp
->disk
.minor
= dl
->minor
;
2651 tmp
->disk
.state
= is_configured(disk
) ?
2652 (1 << MD_DISK_ACTIVE
) : 0;
2653 tmp
->disk
.state
|= is_failed(disk
) ? (1 << MD_DISK_FAULTY
) : 0;
2654 tmp
->disk
.state
|= is_spare(disk
) ? 0 : (1 << MD_DISK_SYNC
);
2655 tmp
->disk
.raid_disk
= -1;
2661 static int update_super_imsm(struct supertype
*st
, struct mdinfo
*info
,
2662 char *update
, char *devname
, int verbose
,
2663 int uuid_set
, char *homehost
)
2665 /* For 'assemble' and 'force' we need to return non-zero if any
2666 * change was made. For others, the return value is ignored.
2667 * Update options are:
2668 * force-one : This device looks a bit old but needs to be included,
2669 * update age info appropriately.
2670 * assemble: clear any 'faulty' flag to allow this device to
2672 * force-array: Array is degraded but being forced, mark it clean
2673 * if that will be needed to assemble it.
2675 * newdev: not used ????
2676 * grow: Array has gained a new device - this is currently for
2678 * resync: mark as dirty so a resync will happen.
2679 * name: update the name - preserving the homehost
2680 * uuid: Change the uuid of the array to match watch is given
2682 * Following are not relevant for this imsm:
2683 * sparc2.2 : update from old dodgey metadata
2684 * super-minor: change the preferred_minor number
2685 * summaries: update redundant counters.
2686 * homehost: update the recorded homehost
2687 * _reshape_progress: record new reshape_progress position.
2690 struct intel_super
*super
= st
->sb
;
2691 struct imsm_super
*mpb
;
2693 /* we can only update container info */
2694 if (!super
|| super
->current_vol
>= 0 || !super
->anchor
)
2697 mpb
= super
->anchor
;
2699 if (strcmp(update
, "uuid") == 0 && uuid_set
&& !info
->update_private
)
2701 else if (strcmp(update
, "uuid") == 0 && uuid_set
&& info
->update_private
) {
2702 mpb
->orig_family_num
= *((__u32
*) info
->update_private
);
2704 } else if (strcmp(update
, "uuid") == 0) {
2705 __u32
*new_family
= malloc(sizeof(*new_family
));
2707 /* update orig_family_number with the incoming random
2708 * data, report the new effective uuid, and store the
2709 * new orig_family_num for future updates.
2712 memcpy(&mpb
->orig_family_num
, info
->uuid
, sizeof(__u32
));
2713 uuid_from_super_imsm(st
, info
->uuid
);
2714 *new_family
= mpb
->orig_family_num
;
2715 info
->update_private
= new_family
;
2718 } else if (strcmp(update
, "assemble") == 0)
2723 /* successful update? recompute checksum */
2725 mpb
->check_sum
= __le32_to_cpu(__gen_imsm_checksum(mpb
));
2730 static size_t disks_to_mpb_size(int disks
)
2734 size
= sizeof(struct imsm_super
);
2735 size
+= (disks
- 1) * sizeof(struct imsm_disk
);
2736 size
+= 2 * sizeof(struct imsm_dev
);
2737 /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */
2738 size
+= (4 - 2) * sizeof(struct imsm_map
);
2739 /* 4 possible disk_ord_tbl's */
2740 size
+= 4 * (disks
- 1) * sizeof(__u32
);
2745 static __u64
avail_size_imsm(struct supertype
*st
, __u64 devsize
)
2747 if (devsize
< (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
))
2750 return devsize
- (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
);
2753 static void free_devlist(struct intel_super
*super
)
2755 struct intel_dev
*dv
;
2757 while (super
->devlist
) {
2758 dv
= super
->devlist
->next
;
2759 free(super
->devlist
->dev
);
2760 free(super
->devlist
);
2761 super
->devlist
= dv
;
2765 static void imsm_copy_dev(struct imsm_dev
*dest
, struct imsm_dev
*src
)
2767 memcpy(dest
, src
, sizeof_imsm_dev(src
, 0));
2770 static int compare_super_imsm(struct supertype
*st
, struct supertype
*tst
)
2774 * 0 same, or first was empty, and second was copied
2775 * 1 second had wrong number
2777 * 3 wrong other info
2779 struct intel_super
*first
= st
->sb
;
2780 struct intel_super
*sec
= tst
->sb
;
2787 /* in platform dependent environment test if the disks
2788 * use the same Intel hba
2790 if (!check_env("IMSM_NO_PLATFORM")) {
2791 if (!first
->hba
|| !sec
->hba
||
2792 (first
->hba
->type
!= sec
->hba
->type
)) {
2794 "HBAs of devices does not match %s != %s\n",
2795 first
->hba
? get_sys_dev_type(first
->hba
->type
) : NULL
,
2796 sec
->hba
? get_sys_dev_type(sec
->hba
->type
) : NULL
);
2801 /* if an anchor does not have num_raid_devs set then it is a free
2804 if (first
->anchor
->num_raid_devs
> 0 &&
2805 sec
->anchor
->num_raid_devs
> 0) {
2806 /* Determine if these disks might ever have been
2807 * related. Further disambiguation can only take place
2808 * in load_super_imsm_all
2810 __u32 first_family
= first
->anchor
->orig_family_num
;
2811 __u32 sec_family
= sec
->anchor
->orig_family_num
;
2813 if (memcmp(first
->anchor
->sig
, sec
->anchor
->sig
,
2814 MAX_SIGNATURE_LENGTH
) != 0)
2817 if (first_family
== 0)
2818 first_family
= first
->anchor
->family_num
;
2819 if (sec_family
== 0)
2820 sec_family
= sec
->anchor
->family_num
;
2822 if (first_family
!= sec_family
)
2828 /* if 'first' is a spare promote it to a populated mpb with sec's
2831 if (first
->anchor
->num_raid_devs
== 0 &&
2832 sec
->anchor
->num_raid_devs
> 0) {
2834 struct intel_dev
*dv
;
2835 struct imsm_dev
*dev
;
2837 /* we need to copy raid device info from sec if an allocation
2838 * fails here we don't associate the spare
2840 for (i
= 0; i
< sec
->anchor
->num_raid_devs
; i
++) {
2841 dv
= malloc(sizeof(*dv
));
2844 dev
= malloc(sizeof_imsm_dev(get_imsm_dev(sec
, i
), 1));
2851 dv
->next
= first
->devlist
;
2852 first
->devlist
= dv
;
2854 if (i
< sec
->anchor
->num_raid_devs
) {
2855 /* allocation failure */
2856 free_devlist(first
);
2857 fprintf(stderr
, "imsm: failed to associate spare\n");
2860 first
->anchor
->num_raid_devs
= sec
->anchor
->num_raid_devs
;
2861 first
->anchor
->orig_family_num
= sec
->anchor
->orig_family_num
;
2862 first
->anchor
->family_num
= sec
->anchor
->family_num
;
2863 memcpy(first
->anchor
->sig
, sec
->anchor
->sig
, MAX_SIGNATURE_LENGTH
);
2864 for (i
= 0; i
< sec
->anchor
->num_raid_devs
; i
++)
2865 imsm_copy_dev(get_imsm_dev(first
, i
), get_imsm_dev(sec
, i
));
2871 static void fd2devname(int fd
, char *name
)
2875 char dname
[PATH_MAX
];
2880 if (fstat(fd
, &st
) != 0)
2882 sprintf(path
, "/sys/dev/block/%d:%d",
2883 major(st
.st_rdev
), minor(st
.st_rdev
));
2885 rv
= readlink(path
, dname
, sizeof(dname
)-1);
2890 nm
= strrchr(dname
, '/');
2893 snprintf(name
, MAX_RAID_SERIAL_LEN
, "/dev/%s", nm
);
2897 extern int scsi_get_serial(int fd
, void *buf
, size_t buf_len
);
2899 static int imsm_read_serial(int fd
, char *devname
,
2900 __u8 serial
[MAX_RAID_SERIAL_LEN
])
2902 unsigned char scsi_serial
[255];
2911 memset(scsi_serial
, 0, sizeof(scsi_serial
));
2913 rv
= scsi_get_serial(fd
, scsi_serial
, sizeof(scsi_serial
));
2915 if (rv
&& check_env("IMSM_DEVNAME_AS_SERIAL")) {
2916 memset(serial
, 0, MAX_RAID_SERIAL_LEN
);
2917 fd2devname(fd
, (char *) serial
);
2924 Name
": Failed to retrieve serial for %s\n",
2929 rsp_len
= scsi_serial
[3];
2933 Name
": Failed to retrieve serial for %s\n",
2937 rsp_buf
= (char *) &scsi_serial
[4];
2939 /* trim all whitespace and non-printable characters and convert
2942 for (i
= 0, dest
= rsp_buf
; i
< rsp_len
; i
++) {
2945 /* ':' is reserved for use in placeholder serial
2946 * numbers for missing disks
2954 len
= dest
- rsp_buf
;
2957 /* truncate leading characters */
2958 if (len
> MAX_RAID_SERIAL_LEN
) {
2959 dest
+= len
- MAX_RAID_SERIAL_LEN
;
2960 len
= MAX_RAID_SERIAL_LEN
;
2963 memset(serial
, 0, MAX_RAID_SERIAL_LEN
);
2964 memcpy(serial
, dest
, len
);
2969 static int serialcmp(__u8
*s1
, __u8
*s2
)
2971 return strncmp((char *) s1
, (char *) s2
, MAX_RAID_SERIAL_LEN
);
2974 static void serialcpy(__u8
*dest
, __u8
*src
)
2976 strncpy((char *) dest
, (char *) src
, MAX_RAID_SERIAL_LEN
);
2979 static struct dl
*serial_to_dl(__u8
*serial
, struct intel_super
*super
)
2983 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
2984 if (serialcmp(dl
->serial
, serial
) == 0)
2990 static struct imsm_disk
*
2991 __serial_to_disk(__u8
*serial
, struct imsm_super
*mpb
, int *idx
)
2995 for (i
= 0; i
< mpb
->num_disks
; i
++) {
2996 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, i
);
2998 if (serialcmp(disk
->serial
, serial
) == 0) {
3009 load_imsm_disk(int fd
, struct intel_super
*super
, char *devname
, int keep_fd
)
3011 struct imsm_disk
*disk
;
3016 __u8 serial
[MAX_RAID_SERIAL_LEN
];
3018 rv
= imsm_read_serial(fd
, devname
, serial
);
3023 dl
= calloc(1, sizeof(*dl
));
3027 Name
": failed to allocate disk buffer for %s\n",
3033 dl
->major
= major(stb
.st_rdev
);
3034 dl
->minor
= minor(stb
.st_rdev
);
3035 dl
->next
= super
->disks
;
3036 dl
->fd
= keep_fd
? fd
: -1;
3037 assert(super
->disks
== NULL
);
3039 serialcpy(dl
->serial
, serial
);
3042 fd2devname(fd
, name
);
3044 dl
->devname
= strdup(devname
);
3046 dl
->devname
= strdup(name
);
3048 /* look up this disk's index in the current anchor */
3049 disk
= __serial_to_disk(dl
->serial
, super
->anchor
, &dl
->index
);
3052 /* only set index on disks that are a member of a
3053 * populated contianer, i.e. one with raid_devs
3055 if (is_failed(&dl
->disk
))
3057 else if (is_spare(&dl
->disk
))
3065 /* When migrating map0 contains the 'destination' state while map1
3066 * contains the current state. When not migrating map0 contains the
3067 * current state. This routine assumes that map[0].map_state is set to
3068 * the current array state before being called.
3070 * Migration is indicated by one of the following states
3071 * 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed)
3072 * 2/ Initialize (migr_state=1 migr_type=MIGR_INIT map0state=normal
3073 * map1state=unitialized)
3074 * 3/ Repair (Resync) (migr_state=1 migr_type=MIGR_REPAIR map0state=normal
3076 * 4/ Rebuild (migr_state=1 migr_type=MIGR_REBUILD map0state=normal
3077 * map1state=degraded)
3078 * 5/ Migration (mig_state=1 migr_type=MIGR_GEN_MIGR map0state=normal
3081 static void migrate(struct imsm_dev
*dev
, struct intel_super
*super
,
3082 __u8 to_state
, int migr_type
)
3084 struct imsm_map
*dest
;
3085 struct imsm_map
*src
= get_imsm_map(dev
, 0);
3087 dev
->vol
.migr_state
= 1;
3088 set_migr_type(dev
, migr_type
);
3089 dev
->vol
.curr_migr_unit
= 0;
3090 dest
= get_imsm_map(dev
, 1);
3092 /* duplicate and then set the target end state in map[0] */
3093 memcpy(dest
, src
, sizeof_imsm_map(src
));
3094 if ((migr_type
== MIGR_REBUILD
) ||
3095 (migr_type
== MIGR_GEN_MIGR
)) {
3099 for (i
= 0; i
< src
->num_members
; i
++) {
3100 ord
= __le32_to_cpu(src
->disk_ord_tbl
[i
]);
3101 set_imsm_ord_tbl_ent(src
, i
, ord_to_idx(ord
));
3105 if (migr_type
== MIGR_GEN_MIGR
)
3106 /* Clear migration record */
3107 memset(super
->migr_rec
, 0, sizeof(struct migr_record
));
3109 src
->map_state
= to_state
;
3112 static void end_migration(struct imsm_dev
*dev
, __u8 map_state
)
3114 struct imsm_map
*map
= get_imsm_map(dev
, 0);
3115 struct imsm_map
*prev
= get_imsm_map(dev
, dev
->vol
.migr_state
);
3118 /* merge any IMSM_ORD_REBUILD bits that were not successfully
3119 * completed in the last migration.
3121 * FIXME add support for raid-level-migration
3123 for (i
= 0; i
< prev
->num_members
; i
++)
3124 for (j
= 0; j
< map
->num_members
; j
++)
3125 /* during online capacity expansion
3126 * disks position can be changed if takeover is used
3128 if (ord_to_idx(map
->disk_ord_tbl
[j
]) ==
3129 ord_to_idx(prev
->disk_ord_tbl
[i
])) {
3130 map
->disk_ord_tbl
[j
] |= prev
->disk_ord_tbl
[i
];
3134 dev
->vol
.migr_state
= 0;
3135 set_migr_type(dev
, 0);
3136 dev
->vol
.curr_migr_unit
= 0;
3137 map
->map_state
= map_state
;
3141 static int parse_raid_devices(struct intel_super
*super
)
3144 struct imsm_dev
*dev_new
;
3145 size_t len
, len_migr
;
3147 size_t space_needed
= 0;
3148 struct imsm_super
*mpb
= super
->anchor
;
3150 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
3151 struct imsm_dev
*dev_iter
= __get_imsm_dev(super
->anchor
, i
);
3152 struct intel_dev
*dv
;
3154 len
= sizeof_imsm_dev(dev_iter
, 0);
3155 len_migr
= sizeof_imsm_dev(dev_iter
, 1);
3157 space_needed
+= len_migr
- len
;
3159 dv
= malloc(sizeof(*dv
));
3162 if (max_len
< len_migr
)
3164 if (max_len
> len_migr
)
3165 space_needed
+= max_len
- len_migr
;
3166 dev_new
= malloc(max_len
);
3171 imsm_copy_dev(dev_new
, dev_iter
);
3174 dv
->next
= super
->devlist
;
3175 super
->devlist
= dv
;
3178 /* ensure that super->buf is large enough when all raid devices
3181 if (__le32_to_cpu(mpb
->mpb_size
) + space_needed
> super
->len
) {
3184 len
= ROUND_UP(__le32_to_cpu(mpb
->mpb_size
) + space_needed
, 512);
3185 if (posix_memalign(&buf
, 512, len
) != 0)
3188 memcpy(buf
, super
->buf
, super
->len
);
3189 memset(buf
+ super
->len
, 0, len
- super
->len
);
3198 /* retrieve a pointer to the bbm log which starts after all raid devices */
3199 struct bbm_log
*__get_imsm_bbm_log(struct imsm_super
*mpb
)
3203 if (__le32_to_cpu(mpb
->bbm_log_size
)) {
3205 ptr
+= mpb
->mpb_size
- __le32_to_cpu(mpb
->bbm_log_size
);
3211 /*******************************************************************************
3212 * Function: check_mpb_migr_compatibility
3213 * Description: Function checks for unsupported migration features:
3214 * - migration optimization area (pba_of_lba0)
3215 * - descending reshape (ascending_migr)
3217 * super : imsm metadata information
3219 * 0 : migration is compatible
3220 * -1 : migration is not compatible
3221 ******************************************************************************/
3222 int check_mpb_migr_compatibility(struct intel_super
*super
)
3224 struct imsm_map
*map0
, *map1
;
3225 struct migr_record
*migr_rec
= super
->migr_rec
;
3228 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
3229 struct imsm_dev
*dev_iter
= __get_imsm_dev(super
->anchor
, i
);
3232 dev_iter
->vol
.migr_state
== 1 &&
3233 dev_iter
->vol
.migr_type
== MIGR_GEN_MIGR
) {
3234 /* This device is migrating */
3235 map0
= get_imsm_map(dev_iter
, 0);
3236 map1
= get_imsm_map(dev_iter
, 1);
3237 if (map0
->pba_of_lba0
!= map1
->pba_of_lba0
)
3238 /* migration optimization area was used */
3240 if (migr_rec
->ascending_migr
== 0
3241 && migr_rec
->dest_depth_per_unit
> 0)
3242 /* descending reshape not supported yet */
3249 static void __free_imsm(struct intel_super
*super
, int free_disks
);
3251 /* load_imsm_mpb - read matrix metadata
3252 * allocates super->mpb to be freed by free_imsm
3254 static int load_imsm_mpb(int fd
, struct intel_super
*super
, char *devname
)
3256 unsigned long long dsize
;
3257 unsigned long long sectors
;
3259 struct imsm_super
*anchor
;
3262 get_dev_size(fd
, NULL
, &dsize
);
3266 Name
": %s: device to small for imsm\n",
3271 if (lseek64(fd
, dsize
- (512 * 2), SEEK_SET
) < 0) {
3273 fprintf(stderr
, Name
3274 ": Cannot seek to anchor block on %s: %s\n",
3275 devname
, strerror(errno
));
3279 if (posix_memalign((void**)&anchor
, 512, 512) != 0) {
3282 Name
": Failed to allocate imsm anchor buffer"
3283 " on %s\n", devname
);
3286 if (read(fd
, anchor
, 512) != 512) {
3289 Name
": Cannot read anchor block on %s: %s\n",
3290 devname
, strerror(errno
));
3295 if (strncmp((char *) anchor
->sig
, MPB_SIGNATURE
, MPB_SIG_LEN
) != 0) {
3298 Name
": no IMSM anchor on %s\n", devname
);
3303 __free_imsm(super
, 0);
3304 /* reload capability and hba */
3306 /* capability and hba must be updated with new super allocation */
3307 find_intel_hba_capability(fd
, super
, devname
);
3308 super
->len
= ROUND_UP(anchor
->mpb_size
, 512);
3309 if (posix_memalign(&super
->buf
, 512, super
->len
) != 0) {
3312 Name
": unable to allocate %zu byte mpb buffer\n",
3317 memcpy(super
->buf
, anchor
, 512);
3319 sectors
= mpb_sectors(anchor
) - 1;
3322 if (posix_memalign(&super
->migr_rec_buf
, 512, 512) != 0) {
3323 fprintf(stderr
, Name
3324 ": %s could not allocate migr_rec buffer\n", __func__
);
3330 check_sum
= __gen_imsm_checksum(super
->anchor
);
3331 if (check_sum
!= __le32_to_cpu(super
->anchor
->check_sum
)) {
3334 Name
": IMSM checksum %x != %x on %s\n",
3336 __le32_to_cpu(super
->anchor
->check_sum
),
3344 /* read the extended mpb */
3345 if (lseek64(fd
, dsize
- (512 * (2 + sectors
)), SEEK_SET
) < 0) {
3348 Name
": Cannot seek to extended mpb on %s: %s\n",
3349 devname
, strerror(errno
));
3353 if ((unsigned)read(fd
, super
->buf
+ 512, super
->len
- 512) != super
->len
- 512) {
3356 Name
": Cannot read extended mpb on %s: %s\n",
3357 devname
, strerror(errno
));
3361 check_sum
= __gen_imsm_checksum(super
->anchor
);
3362 if (check_sum
!= __le32_to_cpu(super
->anchor
->check_sum
)) {
3365 Name
": IMSM checksum %x != %x on %s\n",
3366 check_sum
, __le32_to_cpu(super
->anchor
->check_sum
),
3371 /* FIXME the BBM log is disk specific so we cannot use this global
3372 * buffer for all disks. Ok for now since we only look at the global
3373 * bbm_log_size parameter to gate assembly
3375 super
->bbm_log
= __get_imsm_bbm_log(super
->anchor
);
3380 static int read_imsm_migr_rec(int fd
, struct intel_super
*super
);
3383 load_and_parse_mpb(int fd
, struct intel_super
*super
, char *devname
, int keep_fd
)
3387 err
= load_imsm_mpb(fd
, super
, devname
);
3390 err
= load_imsm_disk(fd
, super
, devname
, keep_fd
);
3393 err
= parse_raid_devices(super
);
3398 static void __free_imsm_disk(struct dl
*d
)
3410 static void free_imsm_disks(struct intel_super
*super
)
3414 while (super
->disks
) {
3416 super
->disks
= d
->next
;
3417 __free_imsm_disk(d
);
3419 while (super
->disk_mgmt_list
) {
3420 d
= super
->disk_mgmt_list
;
3421 super
->disk_mgmt_list
= d
->next
;
3422 __free_imsm_disk(d
);
3424 while (super
->missing
) {
3426 super
->missing
= d
->next
;
3427 __free_imsm_disk(d
);
3432 /* free all the pieces hanging off of a super pointer */
3433 static void __free_imsm(struct intel_super
*super
, int free_disks
)
3435 struct intel_hba
*elem
, *next
;
3441 /* unlink capability description */
3443 if (super
->migr_rec_buf
) {
3444 free(super
->migr_rec_buf
);
3445 super
->migr_rec_buf
= NULL
;
3448 free_imsm_disks(super
);
3449 free_devlist(super
);
3453 free((void *)elem
->path
);
3461 static void free_imsm(struct intel_super
*super
)
3463 __free_imsm(super
, 1);
3467 static void free_super_imsm(struct supertype
*st
)
3469 struct intel_super
*super
= st
->sb
;
3478 static struct intel_super
*alloc_super(void)
3480 struct intel_super
*super
= malloc(sizeof(*super
));
3483 memset(super
, 0, sizeof(*super
));
3484 super
->current_vol
= -1;
3485 super
->create_offset
= ~((__u32
) 0);
3491 * find and allocate hba and OROM/EFI based on valid fd of RAID component device
3493 static int find_intel_hba_capability(int fd
, struct intel_super
*super
, char *devname
)
3495 struct sys_dev
*hba_name
;
3498 if ((fd
< 0) || check_env("IMSM_NO_PLATFORM")) {
3503 hba_name
= find_disk_attached_hba(fd
, NULL
);
3507 Name
": %s is not attached to Intel(R) RAID controller.\n",
3511 rv
= attach_hba_to_super(super
, hba_name
);
3514 struct intel_hba
*hba
= super
->hba
;
3516 fprintf(stderr
, Name
": %s is attached to Intel(R) %s RAID "
3517 "controller (%s),\n"
3518 " but the container is assigned to Intel(R) "
3519 "%s RAID controller (",
3522 hba_name
->pci_id
? : "Err!",
3523 get_sys_dev_type(hba_name
->type
));
3526 fprintf(stderr
, "%s", hba
->pci_id
? : "Err!");
3528 fprintf(stderr
, ", ");
3532 fprintf(stderr
, ").\n"
3533 " Mixing devices attached to different controllers "
3534 "is not allowed.\n");
3536 free_sys_dev(&hba_name
);
3539 super
->orom
= find_imsm_capability(hba_name
->type
);
3540 free_sys_dev(&hba_name
);
3546 /* find_missing - helper routine for load_super_imsm_all that identifies
3547 * disks that have disappeared from the system. This routine relies on
3548 * the mpb being uptodate, which it is at load time.
3550 static int find_missing(struct intel_super
*super
)
3553 struct imsm_super
*mpb
= super
->anchor
;
3555 struct imsm_disk
*disk
;
3557 for (i
= 0; i
< mpb
->num_disks
; i
++) {
3558 disk
= __get_imsm_disk(mpb
, i
);
3559 dl
= serial_to_dl(disk
->serial
, super
);
3563 dl
= malloc(sizeof(*dl
));
3569 dl
->devname
= strdup("missing");
3571 serialcpy(dl
->serial
, disk
->serial
);
3574 dl
->next
= super
->missing
;
3575 super
->missing
= dl
;
3582 static struct intel_disk
*disk_list_get(__u8
*serial
, struct intel_disk
*disk_list
)
3584 struct intel_disk
*idisk
= disk_list
;
3587 if (serialcmp(idisk
->disk
.serial
, serial
) == 0)
3589 idisk
= idisk
->next
;
3595 static int __prep_thunderdome(struct intel_super
**table
, int tbl_size
,
3596 struct intel_super
*super
,
3597 struct intel_disk
**disk_list
)
3599 struct imsm_disk
*d
= &super
->disks
->disk
;
3600 struct imsm_super
*mpb
= super
->anchor
;
3603 for (i
= 0; i
< tbl_size
; i
++) {
3604 struct imsm_super
*tbl_mpb
= table
[i
]->anchor
;
3605 struct imsm_disk
*tbl_d
= &table
[i
]->disks
->disk
;
3607 if (tbl_mpb
->family_num
== mpb
->family_num
) {
3608 if (tbl_mpb
->check_sum
== mpb
->check_sum
) {
3609 dprintf("%s: mpb from %d:%d matches %d:%d\n",
3610 __func__
, super
->disks
->major
,
3611 super
->disks
->minor
,
3612 table
[i
]->disks
->major
,
3613 table
[i
]->disks
->minor
);
3617 if (((is_configured(d
) && !is_configured(tbl_d
)) ||
3618 is_configured(d
) == is_configured(tbl_d
)) &&
3619 tbl_mpb
->generation_num
< mpb
->generation_num
) {
3620 /* current version of the mpb is a
3621 * better candidate than the one in
3622 * super_table, but copy over "cross
3623 * generational" status
3625 struct intel_disk
*idisk
;
3627 dprintf("%s: mpb from %d:%d replaces %d:%d\n",
3628 __func__
, super
->disks
->major
,
3629 super
->disks
->minor
,
3630 table
[i
]->disks
->major
,
3631 table
[i
]->disks
->minor
);
3633 idisk
= disk_list_get(tbl_d
->serial
, *disk_list
);
3634 if (idisk
&& is_failed(&idisk
->disk
))
3635 tbl_d
->status
|= FAILED_DISK
;
3638 struct intel_disk
*idisk
;
3639 struct imsm_disk
*disk
;
3641 /* tbl_mpb is more up to date, but copy
3642 * over cross generational status before
3645 disk
= __serial_to_disk(d
->serial
, mpb
, NULL
);
3646 if (disk
&& is_failed(disk
))
3647 d
->status
|= FAILED_DISK
;
3649 idisk
= disk_list_get(d
->serial
, *disk_list
);
3652 if (disk
&& is_configured(disk
))
3653 idisk
->disk
.status
|= CONFIGURED_DISK
;
3656 dprintf("%s: mpb from %d:%d prefer %d:%d\n",
3657 __func__
, super
->disks
->major
,
3658 super
->disks
->minor
,
3659 table
[i
]->disks
->major
,
3660 table
[i
]->disks
->minor
);
3668 table
[tbl_size
++] = super
;
3672 /* update/extend the merged list of imsm_disk records */
3673 for (j
= 0; j
< mpb
->num_disks
; j
++) {
3674 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, j
);
3675 struct intel_disk
*idisk
;
3677 idisk
= disk_list_get(disk
->serial
, *disk_list
);
3679 idisk
->disk
.status
|= disk
->status
;
3680 if (is_configured(&idisk
->disk
) ||
3681 is_failed(&idisk
->disk
))
3682 idisk
->disk
.status
&= ~(SPARE_DISK
);
3684 idisk
= calloc(1, sizeof(*idisk
));
3687 idisk
->owner
= IMSM_UNKNOWN_OWNER
;
3688 idisk
->disk
= *disk
;
3689 idisk
->next
= *disk_list
;
3693 if (serialcmp(idisk
->disk
.serial
, d
->serial
) == 0)
3700 static struct intel_super
*
3701 validate_members(struct intel_super
*super
, struct intel_disk
*disk_list
,
3704 struct imsm_super
*mpb
= super
->anchor
;
3708 for (i
= 0; i
< mpb
->num_disks
; i
++) {
3709 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, i
);
3710 struct intel_disk
*idisk
;
3712 idisk
= disk_list_get(disk
->serial
, disk_list
);
3714 if (idisk
->owner
== owner
||
3715 idisk
->owner
== IMSM_UNKNOWN_OWNER
)
3718 dprintf("%s: '%.16s' owner %d != %d\n",
3719 __func__
, disk
->serial
, idisk
->owner
,
3722 dprintf("%s: unknown disk %x [%d]: %.16s\n",
3723 __func__
, __le32_to_cpu(mpb
->family_num
), i
,
3729 if (ok_count
== mpb
->num_disks
)
3734 static void show_conflicts(__u32 family_num
, struct intel_super
*super_list
)
3736 struct intel_super
*s
;
3738 for (s
= super_list
; s
; s
= s
->next
) {
3739 if (family_num
!= s
->anchor
->family_num
)
3741 fprintf(stderr
, "Conflict, offlining family %#x on '%s'\n",
3742 __le32_to_cpu(family_num
), s
->disks
->devname
);
3746 static struct intel_super
*
3747 imsm_thunderdome(struct intel_super
**super_list
, int len
)
3749 struct intel_super
*super_table
[len
];
3750 struct intel_disk
*disk_list
= NULL
;
3751 struct intel_super
*champion
, *spare
;
3752 struct intel_super
*s
, **del
;
3757 memset(super_table
, 0, sizeof(super_table
));
3758 for (s
= *super_list
; s
; s
= s
->next
)
3759 tbl_size
= __prep_thunderdome(super_table
, tbl_size
, s
, &disk_list
);
3761 for (i
= 0; i
< tbl_size
; i
++) {
3762 struct imsm_disk
*d
;
3763 struct intel_disk
*idisk
;
3764 struct imsm_super
*mpb
= super_table
[i
]->anchor
;
3767 d
= &s
->disks
->disk
;
3769 /* 'd' must appear in merged disk list for its
3770 * configuration to be valid
3772 idisk
= disk_list_get(d
->serial
, disk_list
);
3773 if (idisk
&& idisk
->owner
== i
)
3774 s
= validate_members(s
, disk_list
, i
);
3779 dprintf("%s: marking family: %#x from %d:%d offline\n",
3780 __func__
, mpb
->family_num
,
3781 super_table
[i
]->disks
->major
,
3782 super_table
[i
]->disks
->minor
);
3786 /* This is where the mdadm implementation differs from the Windows
3787 * driver which has no strict concept of a container. We can only
3788 * assemble one family from a container, so when returning a prodigal
3789 * array member to this system the code will not be able to disambiguate
3790 * the container contents that should be assembled ("foreign" versus
3791 * "local"). It requires user intervention to set the orig_family_num
3792 * to a new value to establish a new container. The Windows driver in
3793 * this situation fixes up the volume name in place and manages the
3794 * foreign array as an independent entity.
3799 for (i
= 0; i
< tbl_size
; i
++) {
3800 struct intel_super
*tbl_ent
= super_table
[i
];
3806 if (tbl_ent
->anchor
->num_raid_devs
== 0) {
3811 if (s
&& !is_spare
) {
3812 show_conflicts(tbl_ent
->anchor
->family_num
, *super_list
);
3814 } else if (!s
&& !is_spare
)
3827 fprintf(stderr
, "Chose family %#x on '%s', "
3828 "assemble conflicts to new container with '--update=uuid'\n",
3829 __le32_to_cpu(s
->anchor
->family_num
), s
->disks
->devname
);
3831 /* collect all dl's onto 'champion', and update them to
3832 * champion's version of the status
3834 for (s
= *super_list
; s
; s
= s
->next
) {
3835 struct imsm_super
*mpb
= champion
->anchor
;
3836 struct dl
*dl
= s
->disks
;
3841 for (i
= 0; i
< mpb
->num_disks
; i
++) {
3842 struct imsm_disk
*disk
;
3844 disk
= __serial_to_disk(dl
->serial
, mpb
, &dl
->index
);
3847 /* only set index on disks that are a member of
3848 * a populated contianer, i.e. one with
3851 if (is_failed(&dl
->disk
))
3853 else if (is_spare(&dl
->disk
))
3859 if (i
>= mpb
->num_disks
) {
3860 struct intel_disk
*idisk
;
3862 idisk
= disk_list_get(dl
->serial
, disk_list
);
3863 if (idisk
&& is_spare(&idisk
->disk
) &&
3864 !is_failed(&idisk
->disk
) && !is_configured(&idisk
->disk
))
3872 dl
->next
= champion
->disks
;
3873 champion
->disks
= dl
;
3877 /* delete 'champion' from super_list */
3878 for (del
= super_list
; *del
; ) {
3879 if (*del
== champion
) {
3880 *del
= (*del
)->next
;
3883 del
= &(*del
)->next
;
3885 champion
->next
= NULL
;
3889 struct intel_disk
*idisk
= disk_list
;
3891 disk_list
= disk_list
->next
;
3898 static int load_super_imsm_all(struct supertype
*st
, int fd
, void **sbp
,
3902 struct intel_super
*super_list
= NULL
;
3903 struct intel_super
*super
= NULL
;
3904 int devnum
= fd2devnum(fd
);
3910 /* check if 'fd' an opened container */
3911 sra
= sysfs_read(fd
, 0, GET_LEVEL
|GET_VERSION
|GET_DEVS
|GET_STATE
);
3915 if (sra
->array
.major_version
!= -1 ||
3916 sra
->array
.minor_version
!= -2 ||
3917 strcmp(sra
->text_version
, "imsm") != 0) {
3922 for (sd
= sra
->devs
, i
= 0; sd
; sd
= sd
->next
, i
++) {
3923 struct intel_super
*s
= alloc_super();
3931 s
->next
= super_list
;
3935 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
3936 dfd
= dev_open(nm
, O_RDWR
);
3940 rv
= find_intel_hba_capability(dfd
, s
, devname
);
3941 /* no orom/efi or non-intel hba of the disk */
3945 err
= load_and_parse_mpb(dfd
, s
, NULL
, 1);
3947 /* retry the load if we might have raced against mdmon */
3948 if (err
== 3 && mdmon_running(devnum
))
3949 for (retry
= 0; retry
< 3; retry
++) {
3951 err
= load_and_parse_mpb(dfd
, s
, NULL
, 1);
3959 /* all mpbs enter, maybe one leaves */
3960 super
= imsm_thunderdome(&super_list
, i
);
3966 if (find_missing(super
) != 0) {
3972 /* load migration record */
3973 err
= load_imsm_migr_rec(super
, NULL
);
3979 /* Check migration compatibility */
3980 if (check_mpb_migr_compatibility(super
) != 0) {
3981 fprintf(stderr
, Name
": Unsupported migration detected");
3983 fprintf(stderr
, " on %s\n", devname
);
3985 fprintf(stderr
, " (IMSM).\n");
3994 while (super_list
) {
3995 struct intel_super
*s
= super_list
;
3997 super_list
= super_list
->next
;
4006 st
->container_dev
= devnum
;
4007 if (err
== 0 && st
->ss
== NULL
) {
4008 st
->ss
= &super_imsm
;
4009 st
->minor_version
= 0;
4010 st
->max_devs
= IMSM_MAX_DEVICES
;
4015 static int load_container_imsm(struct supertype
*st
, int fd
, char *devname
)
4017 return load_super_imsm_all(st
, fd
, &st
->sb
, devname
);
4021 static int load_super_imsm(struct supertype
*st
, int fd
, char *devname
)
4023 struct intel_super
*super
;
4026 if (test_partition(fd
))
4027 /* IMSM not allowed on partitions */
4030 free_super_imsm(st
);
4032 super
= alloc_super();
4035 Name
": malloc of %zu failed.\n",
4039 /* Load hba and capabilities if they exist.
4040 * But do not preclude loading metadata in case capabilities or hba are
4041 * non-compliant and ignore_hw_compat is set.
4043 rv
= find_intel_hba_capability(fd
, super
, devname
);
4044 /* no orom/efi or non-intel hba of the disk */
4045 if ((rv
!= 0) && (st
->ignore_hw_compat
== 0)) {
4048 Name
": No OROM/EFI properties for %s\n", devname
);
4052 rv
= load_and_parse_mpb(fd
, super
, devname
, 0);
4057 Name
": Failed to load all information "
4058 "sections on %s\n", devname
);
4064 if (st
->ss
== NULL
) {
4065 st
->ss
= &super_imsm
;
4066 st
->minor_version
= 0;
4067 st
->max_devs
= IMSM_MAX_DEVICES
;
4070 /* load migration record */
4071 if (load_imsm_migr_rec(super
, NULL
) == 0) {
4072 /* Check for unsupported migration features */
4073 if (check_mpb_migr_compatibility(super
) != 0) {
4075 Name
": Unsupported migration detected");
4077 fprintf(stderr
, " on %s\n", devname
);
4079 fprintf(stderr
, " (IMSM).\n");
4087 static __u16
info_to_blocks_per_strip(mdu_array_info_t
*info
)
4089 if (info
->level
== 1)
4091 return info
->chunk_size
>> 9;
4094 static __u32
info_to_num_data_stripes(mdu_array_info_t
*info
, int num_domains
)
4098 num_stripes
= (info
->size
* 2) / info_to_blocks_per_strip(info
);
4099 num_stripes
/= num_domains
;
4104 static __u32
info_to_blocks_per_member(mdu_array_info_t
*info
)
4106 if (info
->level
== 1)
4107 return info
->size
* 2;
4109 return (info
->size
* 2) & ~(info_to_blocks_per_strip(info
) - 1);
4112 static void imsm_update_version_info(struct intel_super
*super
)
4114 /* update the version and attributes */
4115 struct imsm_super
*mpb
= super
->anchor
;
4117 struct imsm_dev
*dev
;
4118 struct imsm_map
*map
;
4121 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
4122 dev
= get_imsm_dev(super
, i
);
4123 map
= get_imsm_map(dev
, 0);
4124 if (__le32_to_cpu(dev
->size_high
) > 0)
4125 mpb
->attributes
|= MPB_ATTRIB_2TB
;
4127 /* FIXME detect when an array spans a port multiplier */
4129 mpb
->attributes
|= MPB_ATTRIB_PM
;
4132 if (mpb
->num_raid_devs
> 1 ||
4133 mpb
->attributes
!= MPB_ATTRIB_CHECKSUM_VERIFY
) {
4134 version
= MPB_VERSION_ATTRIBS
;
4135 switch (get_imsm_raid_level(map
)) {
4136 case 0: mpb
->attributes
|= MPB_ATTRIB_RAID0
; break;
4137 case 1: mpb
->attributes
|= MPB_ATTRIB_RAID1
; break;
4138 case 10: mpb
->attributes
|= MPB_ATTRIB_RAID10
; break;
4139 case 5: mpb
->attributes
|= MPB_ATTRIB_RAID5
; break;
4142 if (map
->num_members
>= 5)
4143 version
= MPB_VERSION_5OR6_DISK_ARRAY
;
4144 else if (dev
->status
== DEV_CLONE_N_GO
)
4145 version
= MPB_VERSION_CNG
;
4146 else if (get_imsm_raid_level(map
) == 5)
4147 version
= MPB_VERSION_RAID5
;
4148 else if (map
->num_members
>= 3)
4149 version
= MPB_VERSION_3OR4_DISK_ARRAY
;
4150 else if (get_imsm_raid_level(map
) == 1)
4151 version
= MPB_VERSION_RAID1
;
4153 version
= MPB_VERSION_RAID0
;
4155 strcpy(((char *) mpb
->sig
) + strlen(MPB_SIGNATURE
), version
);
4159 static int check_name(struct intel_super
*super
, char *name
, int quiet
)
4161 struct imsm_super
*mpb
= super
->anchor
;
4162 char *reason
= NULL
;
4165 if (strlen(name
) > MAX_RAID_SERIAL_LEN
)
4166 reason
= "must be 16 characters or less";
4168 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
4169 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
4171 if (strncmp((char *) dev
->volume
, name
, MAX_RAID_SERIAL_LEN
) == 0) {
4172 reason
= "already exists";
4177 if (reason
&& !quiet
)
4178 fprintf(stderr
, Name
": imsm volume name %s\n", reason
);
4183 static int init_super_imsm_volume(struct supertype
*st
, mdu_array_info_t
*info
,
4184 unsigned long long size
, char *name
,
4185 char *homehost
, int *uuid
)
4187 /* We are creating a volume inside a pre-existing container.
4188 * so st->sb is already set.
4190 struct intel_super
*super
= st
->sb
;
4191 struct imsm_super
*mpb
= super
->anchor
;
4192 struct intel_dev
*dv
;
4193 struct imsm_dev
*dev
;
4194 struct imsm_vol
*vol
;
4195 struct imsm_map
*map
;
4196 int idx
= mpb
->num_raid_devs
;
4198 unsigned long long array_blocks
;
4199 size_t size_old
, size_new
;
4200 __u32 num_data_stripes
;
4202 if (super
->orom
&& mpb
->num_raid_devs
>= super
->orom
->vpa
) {
4203 fprintf(stderr
, Name
": This imsm-container already has the "
4204 "maximum of %d volumes\n", super
->orom
->vpa
);
4208 /* ensure the mpb is large enough for the new data */
4209 size_old
= __le32_to_cpu(mpb
->mpb_size
);
4210 size_new
= disks_to_mpb_size(info
->nr_disks
);
4211 if (size_new
> size_old
) {
4213 size_t size_round
= ROUND_UP(size_new
, 512);
4215 if (posix_memalign(&mpb_new
, 512, size_round
) != 0) {
4216 fprintf(stderr
, Name
": could not allocate new mpb\n");
4219 if (posix_memalign(&super
->migr_rec_buf
, 512, 512) != 0) {
4220 fprintf(stderr
, Name
4221 ": %s could not allocate migr_rec buffer\n",
4228 memcpy(mpb_new
, mpb
, size_old
);
4231 super
->anchor
= mpb_new
;
4232 mpb
->mpb_size
= __cpu_to_le32(size_new
);
4233 memset(mpb_new
+ size_old
, 0, size_round
- size_old
);
4235 super
->current_vol
= idx
;
4237 /* handle 'failed_disks' by either:
4238 * a) create dummy disk entries in the table if this the first
4239 * volume in the array. We add them here as this is the only
4240 * opportunity to add them. add_to_super_imsm_volume()
4241 * handles the non-failed disks and continues incrementing
4243 * b) validate that 'failed_disks' matches the current number
4244 * of missing disks if the container is populated
4246 if (super
->current_vol
== 0) {
4248 for (i
= 0; i
< info
->failed_disks
; i
++) {
4249 struct imsm_disk
*disk
;
4252 disk
= __get_imsm_disk(mpb
, i
);
4253 disk
->status
= CONFIGURED_DISK
| FAILED_DISK
;
4254 disk
->scsi_id
= __cpu_to_le32(~(__u32
)0);
4255 snprintf((char *) disk
->serial
, MAX_RAID_SERIAL_LEN
,
4258 find_missing(super
);
4263 for (d
= super
->missing
; d
; d
= d
->next
)
4265 if (info
->failed_disks
> missing
) {
4266 fprintf(stderr
, Name
": unable to add 'missing' disk to container\n");
4271 if (!check_name(super
, name
, 0))
4273 dv
= malloc(sizeof(*dv
));
4275 fprintf(stderr
, Name
": failed to allocate device list entry\n");
4278 dev
= calloc(1, sizeof(*dev
) + sizeof(__u32
) * (info
->raid_disks
- 1));
4281 fprintf(stderr
, Name
": could not allocate raid device\n");
4285 strncpy((char *) dev
->volume
, name
, MAX_RAID_SERIAL_LEN
);
4286 if (info
->level
== 1)
4287 array_blocks
= info_to_blocks_per_member(info
);
4289 array_blocks
= calc_array_size(info
->level
, info
->raid_disks
,
4290 info
->layout
, info
->chunk_size
,
4292 /* round array size down to closest MB */
4293 array_blocks
= (array_blocks
>> SECT_PER_MB_SHIFT
) << SECT_PER_MB_SHIFT
;
4295 dev
->size_low
= __cpu_to_le32((__u32
) array_blocks
);
4296 dev
->size_high
= __cpu_to_le32((__u32
) (array_blocks
>> 32));
4297 dev
->status
= (DEV_READ_COALESCING
| DEV_WRITE_COALESCING
);
4299 vol
->migr_state
= 0;
4300 set_migr_type(dev
, MIGR_INIT
);
4301 vol
->dirty
= !info
->state
;
4302 vol
->curr_migr_unit
= 0;
4303 map
= get_imsm_map(dev
, 0);
4304 map
->pba_of_lba0
= __cpu_to_le32(super
->create_offset
);
4305 map
->blocks_per_member
= __cpu_to_le32(info_to_blocks_per_member(info
));
4306 map
->blocks_per_strip
= __cpu_to_le16(info_to_blocks_per_strip(info
));
4307 map
->failed_disk_num
= ~0;
4308 map
->map_state
= info
->failed_disks
? IMSM_T_STATE_DEGRADED
: IMSM_T_STATE_NORMAL
;
4311 if (info
->level
== 1 && info
->raid_disks
> 2) {
4314 fprintf(stderr
, Name
": imsm does not support more than 2 disks"
4315 "in a raid1 volume\n");
4319 map
->raid_level
= info
->level
;
4320 if (info
->level
== 10) {
4321 map
->raid_level
= 1;
4322 map
->num_domains
= info
->raid_disks
/ 2;
4323 } else if (info
->level
== 1)
4324 map
->num_domains
= info
->raid_disks
;
4326 map
->num_domains
= 1;
4328 num_data_stripes
= info_to_num_data_stripes(info
, map
->num_domains
);
4329 map
->num_data_stripes
= __cpu_to_le32(num_data_stripes
);
4331 map
->num_members
= info
->raid_disks
;
4332 for (i
= 0; i
< map
->num_members
; i
++) {
4333 /* initialized in add_to_super */
4334 set_imsm_ord_tbl_ent(map
, i
, IMSM_ORD_REBUILD
);
4336 mpb
->num_raid_devs
++;
4339 dv
->index
= super
->current_vol
;
4340 dv
->next
= super
->devlist
;
4341 super
->devlist
= dv
;
4343 imsm_update_version_info(super
);
4348 static int init_super_imsm(struct supertype
*st
, mdu_array_info_t
*info
,
4349 unsigned long long size
, char *name
,
4350 char *homehost
, int *uuid
)
4352 /* This is primarily called by Create when creating a new array.
4353 * We will then get add_to_super called for each component, and then
4354 * write_init_super called to write it out to each device.
4355 * For IMSM, Create can create on fresh devices or on a pre-existing
4357 * To create on a pre-existing array a different method will be called.
4358 * This one is just for fresh drives.
4360 struct intel_super
*super
;
4361 struct imsm_super
*mpb
;
4366 return init_super_imsm_volume(st
, info
, size
, name
, homehost
, uuid
);
4369 mpb_size
= disks_to_mpb_size(info
->nr_disks
);
4373 super
= alloc_super();
4374 if (super
&& posix_memalign(&super
->buf
, 512, mpb_size
) != 0) {
4379 fprintf(stderr
, Name
4380 ": %s could not allocate superblock\n", __func__
);
4383 if (posix_memalign(&super
->migr_rec_buf
, 512, 512) != 0) {
4384 fprintf(stderr
, Name
4385 ": %s could not allocate migr_rec buffer\n", __func__
);
4390 memset(super
->buf
, 0, mpb_size
);
4392 mpb
->mpb_size
= __cpu_to_le32(mpb_size
);
4396 /* zeroing superblock */
4400 mpb
->attributes
= MPB_ATTRIB_CHECKSUM_VERIFY
;
4402 version
= (char *) mpb
->sig
;
4403 strcpy(version
, MPB_SIGNATURE
);
4404 version
+= strlen(MPB_SIGNATURE
);
4405 strcpy(version
, MPB_VERSION_RAID0
);
4411 static int add_to_super_imsm_volume(struct supertype
*st
, mdu_disk_info_t
*dk
,
4412 int fd
, char *devname
)
4414 struct intel_super
*super
= st
->sb
;
4415 struct imsm_super
*mpb
= super
->anchor
;
4416 struct imsm_disk
*_disk
;
4417 struct imsm_dev
*dev
;
4418 struct imsm_map
*map
;
4422 dev
= get_imsm_dev(super
, super
->current_vol
);
4423 map
= get_imsm_map(dev
, 0);
4425 if (! (dk
->state
& (1<<MD_DISK_SYNC
))) {
4426 fprintf(stderr
, Name
": %s: Cannot add spare devices to IMSM volume\n",
4432 /* we're doing autolayout so grab the pre-marked (in
4433 * validate_geometry) raid_disk
4435 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
4436 if (dl
->raiddisk
== dk
->raid_disk
)
4439 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
4440 if (dl
->major
== dk
->major
&&
4441 dl
->minor
== dk
->minor
)
4446 fprintf(stderr
, Name
": %s is not a member of the same container\n", devname
);
4450 /* add a pristine spare to the metadata */
4451 if (dl
->index
< 0) {
4452 dl
->index
= super
->anchor
->num_disks
;
4453 super
->anchor
->num_disks
++;
4455 /* Check the device has not already been added */
4456 slot
= get_imsm_disk_slot(map
, dl
->index
);
4458 (get_imsm_ord_tbl_ent(dev
, slot
, -1) & IMSM_ORD_REBUILD
) == 0) {
4459 fprintf(stderr
, Name
": %s has been included in this array twice\n",
4463 set_imsm_ord_tbl_ent(map
, dk
->raid_disk
, dl
->index
);
4464 dl
->disk
.status
= CONFIGURED_DISK
;
4466 /* update size of 'missing' disks to be at least as large as the
4467 * largest acitve member (we only have dummy missing disks when
4468 * creating the first volume)
4470 if (super
->current_vol
== 0) {
4471 for (df
= super
->missing
; df
; df
= df
->next
) {
4472 if (dl
->disk
.total_blocks
> df
->disk
.total_blocks
)
4473 df
->disk
.total_blocks
= dl
->disk
.total_blocks
;
4474 _disk
= __get_imsm_disk(mpb
, df
->index
);
4479 /* refresh unset/failed slots to point to valid 'missing' entries */
4480 for (df
= super
->missing
; df
; df
= df
->next
)
4481 for (slot
= 0; slot
< mpb
->num_disks
; slot
++) {
4482 __u32 ord
= get_imsm_ord_tbl_ent(dev
, slot
, -1);
4484 if ((ord
& IMSM_ORD_REBUILD
) == 0)
4486 set_imsm_ord_tbl_ent(map
, slot
, df
->index
| IMSM_ORD_REBUILD
);
4487 if (is_gen_migration(dev
)) {
4488 struct imsm_map
*map2
= get_imsm_map(dev
, 1);
4489 if (slot
< map2
->num_members
) {
4490 __u32 ord2
= get_imsm_ord_tbl_ent(dev
,
4493 if ((unsigned)df
->index
==
4495 set_imsm_ord_tbl_ent(map2
,
4501 dprintf("set slot:%d to missing disk:%d\n", slot
, df
->index
);
4505 /* if we are creating the first raid device update the family number */
4506 if (super
->current_vol
== 0) {
4508 struct imsm_dev
*_dev
= __get_imsm_dev(mpb
, 0);
4510 _disk
= __get_imsm_disk(mpb
, dl
->index
);
4511 if (!_dev
|| !_disk
) {
4512 fprintf(stderr
, Name
": BUG mpb setup error\n");
4518 sum
+= __gen_imsm_checksum(mpb
);
4519 mpb
->family_num
= __cpu_to_le32(sum
);
4520 mpb
->orig_family_num
= mpb
->family_num
;
4522 super
->current_disk
= dl
;
4527 * Function marks disk as spare and restores disk serial
4528 * in case it was previously marked as failed by takeover operation
4530 * -1 : critical error
4531 * 0 : disk is marked as spare but serial is not set
4534 int mark_spare(struct dl
*disk
)
4536 __u8 serial
[MAX_RAID_SERIAL_LEN
];
4543 if (!imsm_read_serial(disk
->fd
, NULL
, serial
)) {
4544 /* Restore disk serial number, because takeover marks disk
4545 * as failed and adds to serial ':0' before it becomes
4548 serialcpy(disk
->serial
, serial
);
4549 serialcpy(disk
->disk
.serial
, serial
);
4552 disk
->disk
.status
= SPARE_DISK
;
4558 static int add_to_super_imsm(struct supertype
*st
, mdu_disk_info_t
*dk
,
4559 int fd
, char *devname
)
4561 struct intel_super
*super
= st
->sb
;
4563 unsigned long long size
;
4568 /* If we are on an RAID enabled platform check that the disk is
4569 * attached to the raid controller.
4570 * We do not need to test disks attachment for container based additions,
4571 * they shall be already tested when container was created/assembled.
4573 rv
= find_intel_hba_capability(fd
, super
, devname
);
4574 /* no orom/efi or non-intel hba of the disk */
4576 dprintf("capability: %p fd: %d ret: %d\n",
4577 super
->orom
, fd
, rv
);
4581 if (super
->current_vol
>= 0)
4582 return add_to_super_imsm_volume(st
, dk
, fd
, devname
);
4585 dd
= malloc(sizeof(*dd
));
4588 Name
": malloc failed %s:%d.\n", __func__
, __LINE__
);
4591 memset(dd
, 0, sizeof(*dd
));
4592 dd
->major
= major(stb
.st_rdev
);
4593 dd
->minor
= minor(stb
.st_rdev
);
4594 dd
->devname
= devname
? strdup(devname
) : NULL
;
4597 dd
->action
= DISK_ADD
;
4598 rv
= imsm_read_serial(fd
, devname
, dd
->serial
);
4601 Name
": failed to retrieve scsi serial, aborting\n");
4606 get_dev_size(fd
, NULL
, &size
);
4608 serialcpy(dd
->disk
.serial
, dd
->serial
);
4609 dd
->disk
.total_blocks
= __cpu_to_le32(size
);
4611 if (sysfs_disk_to_scsi_id(fd
, &id
) == 0)
4612 dd
->disk
.scsi_id
= __cpu_to_le32(id
);
4614 dd
->disk
.scsi_id
= __cpu_to_le32(0);
4616 if (st
->update_tail
) {
4617 dd
->next
= super
->disk_mgmt_list
;
4618 super
->disk_mgmt_list
= dd
;
4620 dd
->next
= super
->disks
;
4622 super
->updates_pending
++;
4629 static int remove_from_super_imsm(struct supertype
*st
, mdu_disk_info_t
*dk
)
4631 struct intel_super
*super
= st
->sb
;
4634 /* remove from super works only in mdmon - for communication
4635 * manager - monitor. Check if communication memory buffer
4638 if (!st
->update_tail
) {
4640 Name
": %s shall be used in mdmon context only"
4641 "(line %d).\n", __func__
, __LINE__
);
4644 dd
= malloc(sizeof(*dd
));
4647 Name
": malloc failed %s:%d.\n", __func__
, __LINE__
);
4650 memset(dd
, 0, sizeof(*dd
));
4651 dd
->major
= dk
->major
;
4652 dd
->minor
= dk
->minor
;
4655 dd
->action
= DISK_REMOVE
;
4657 dd
->next
= super
->disk_mgmt_list
;
4658 super
->disk_mgmt_list
= dd
;
4664 static int store_imsm_mpb(int fd
, struct imsm_super
*mpb
);
4668 struct imsm_super anchor
;
4669 } spare_record
__attribute__ ((aligned(512)));
4671 /* spare records have their own family number and do not have any defined raid
4674 static int write_super_imsm_spares(struct intel_super
*super
, int doclose
)
4676 struct imsm_super
*mpb
= super
->anchor
;
4677 struct imsm_super
*spare
= &spare_record
.anchor
;
4681 spare
->mpb_size
= __cpu_to_le32(sizeof(struct imsm_super
)),
4682 spare
->generation_num
= __cpu_to_le32(1UL),
4683 spare
->attributes
= MPB_ATTRIB_CHECKSUM_VERIFY
;
4684 spare
->num_disks
= 1,
4685 spare
->num_raid_devs
= 0,
4686 spare
->cache_size
= mpb
->cache_size
,
4687 spare
->pwr_cycle_count
= __cpu_to_le32(1),
4689 snprintf((char *) spare
->sig
, MAX_SIGNATURE_LENGTH
,
4690 MPB_SIGNATURE MPB_VERSION_RAID0
);
4692 for (d
= super
->disks
; d
; d
= d
->next
) {
4696 spare
->disk
[0] = d
->disk
;
4697 sum
= __gen_imsm_checksum(spare
);
4698 spare
->family_num
= __cpu_to_le32(sum
);
4699 spare
->orig_family_num
= 0;
4700 sum
= __gen_imsm_checksum(spare
);
4701 spare
->check_sum
= __cpu_to_le32(sum
);
4703 if (store_imsm_mpb(d
->fd
, spare
)) {
4704 fprintf(stderr
, "%s: failed for device %d:%d %s\n",
4705 __func__
, d
->major
, d
->minor
, strerror(errno
));
4717 static int write_super_imsm(struct supertype
*st
, int doclose
)
4719 struct intel_super
*super
= st
->sb
;
4720 struct imsm_super
*mpb
= super
->anchor
;
4726 __u32 mpb_size
= sizeof(struct imsm_super
) - sizeof(struct imsm_disk
);
4728 int clear_migration_record
= 1;
4730 /* 'generation' is incremented everytime the metadata is written */
4731 generation
= __le32_to_cpu(mpb
->generation_num
);
4733 mpb
->generation_num
= __cpu_to_le32(generation
);
4735 /* fix up cases where previous mdadm releases failed to set
4738 if (mpb
->orig_family_num
== 0)
4739 mpb
->orig_family_num
= mpb
->family_num
;
4741 for (d
= super
->disks
; d
; d
= d
->next
) {
4745 mpb
->disk
[d
->index
] = d
->disk
;
4749 for (d
= super
->missing
; d
; d
= d
->next
) {
4750 mpb
->disk
[d
->index
] = d
->disk
;
4753 mpb
->num_disks
= num_disks
;
4754 mpb_size
+= sizeof(struct imsm_disk
) * mpb
->num_disks
;
4756 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
4757 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
4758 struct imsm_dev
*dev2
= get_imsm_dev(super
, i
);
4760 imsm_copy_dev(dev
, dev2
);
4761 mpb_size
+= sizeof_imsm_dev(dev
, 0);
4763 if (is_gen_migration(dev2
))
4764 clear_migration_record
= 0;
4766 mpb_size
+= __le32_to_cpu(mpb
->bbm_log_size
);
4767 mpb
->mpb_size
= __cpu_to_le32(mpb_size
);
4769 /* recalculate checksum */
4770 sum
= __gen_imsm_checksum(mpb
);
4771 mpb
->check_sum
= __cpu_to_le32(sum
);
4773 if (clear_migration_record
)
4774 memset(super
->migr_rec_buf
, 0, 512);
4776 /* write the mpb for disks that compose raid devices */
4777 for (d
= super
->disks
; d
; d
= d
->next
) {
4778 if (d
->index
< 0 || is_failed(&d
->disk
))
4780 if (store_imsm_mpb(d
->fd
, mpb
))
4781 fprintf(stderr
, "%s: failed for device %d:%d %s\n",
4782 __func__
, d
->major
, d
->minor
, strerror(errno
));
4783 if (clear_migration_record
) {
4784 unsigned long long dsize
;
4786 get_dev_size(d
->fd
, NULL
, &dsize
);
4787 if (lseek64(d
->fd
, dsize
- 512, SEEK_SET
) >= 0) {
4788 if (write(d
->fd
, super
->migr_rec_buf
, 512) != 512)
4789 perror("Write migr_rec failed");
4799 return write_super_imsm_spares(super
, doclose
);
4805 static int create_array(struct supertype
*st
, int dev_idx
)
4808 struct imsm_update_create_array
*u
;
4809 struct intel_super
*super
= st
->sb
;
4810 struct imsm_dev
*dev
= get_imsm_dev(super
, dev_idx
);
4811 struct imsm_map
*map
= get_imsm_map(dev
, 0);
4812 struct disk_info
*inf
;
4813 struct imsm_disk
*disk
;
4816 len
= sizeof(*u
) - sizeof(*dev
) + sizeof_imsm_dev(dev
, 0) +
4817 sizeof(*inf
) * map
->num_members
;
4820 fprintf(stderr
, "%s: failed to allocate update buffer\n",
4825 u
->type
= update_create_array
;
4826 u
->dev_idx
= dev_idx
;
4827 imsm_copy_dev(&u
->dev
, dev
);
4828 inf
= get_disk_info(u
);
4829 for (i
= 0; i
< map
->num_members
; i
++) {
4830 int idx
= get_imsm_disk_idx(dev
, i
, -1);
4832 disk
= get_imsm_disk(super
, idx
);
4833 serialcpy(inf
[i
].serial
, disk
->serial
);
4835 append_metadata_update(st
, u
, len
);
4840 static int mgmt_disk(struct supertype
*st
)
4842 struct intel_super
*super
= st
->sb
;
4844 struct imsm_update_add_remove_disk
*u
;
4846 if (!super
->disk_mgmt_list
)
4852 fprintf(stderr
, "%s: failed to allocate update buffer\n",
4857 u
->type
= update_add_remove_disk
;
4858 append_metadata_update(st
, u
, len
);
4863 static int write_init_super_imsm(struct supertype
*st
)
4865 struct intel_super
*super
= st
->sb
;
4866 int current_vol
= super
->current_vol
;
4868 /* we are done with current_vol reset it to point st at the container */
4869 super
->current_vol
= -1;
4871 if (st
->update_tail
) {
4872 /* queue the recently created array / added disk
4873 * as a metadata update */
4876 /* determine if we are creating a volume or adding a disk */
4877 if (current_vol
< 0) {
4878 /* in the mgmt (add/remove) disk case we are running
4879 * in mdmon context, so don't close fd's
4881 return mgmt_disk(st
);
4883 rv
= create_array(st
, current_vol
);
4888 for (d
= super
->disks
; d
; d
= d
->next
)
4889 Kill(d
->devname
, NULL
, 0, 1, 1);
4890 return write_super_imsm(st
, 1);
4895 static int store_super_imsm(struct supertype
*st
, int fd
)
4897 struct intel_super
*super
= st
->sb
;
4898 struct imsm_super
*mpb
= super
? super
->anchor
: NULL
;
4904 return store_imsm_mpb(fd
, mpb
);
4910 static int imsm_bbm_log_size(struct imsm_super
*mpb
)
4912 return __le32_to_cpu(mpb
->bbm_log_size
);
4916 static int validate_geometry_imsm_container(struct supertype
*st
, int level
,
4917 int layout
, int raiddisks
, int chunk
,
4918 unsigned long long size
, char *dev
,
4919 unsigned long long *freesize
,
4923 unsigned long long ldsize
;
4924 struct intel_super
*super
=NULL
;
4927 if (level
!= LEVEL_CONTAINER
)
4932 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
4935 fprintf(stderr
, Name
": imsm: Cannot open %s: %s\n",
4936 dev
, strerror(errno
));
4939 if (!get_dev_size(fd
, dev
, &ldsize
)) {
4944 /* capabilities retrieve could be possible
4945 * note that there is no fd for the disks in array.
4947 super
= alloc_super();
4950 Name
": malloc of %zu failed.\n",
4956 rv
= find_intel_hba_capability(fd
, super
, verbose
? dev
: NULL
);
4960 fd2devname(fd
, str
);
4961 dprintf("validate_geometry_imsm_container: fd: %d %s orom: %p rv: %d raiddisk: %d\n",
4962 fd
, str
, super
->orom
, rv
, raiddisks
);
4964 /* no orom/efi or non-intel hba of the disk */
4970 if (super
->orom
&& raiddisks
> super
->orom
->tds
) {
4972 fprintf(stderr
, Name
": %d exceeds maximum number of"
4973 " platform supported disks: %d\n",
4974 raiddisks
, super
->orom
->tds
);
4980 *freesize
= avail_size_imsm(st
, ldsize
>> 9);
4986 static unsigned long long find_size(struct extent
*e
, int *idx
, int num_extents
)
4988 const unsigned long long base_start
= e
[*idx
].start
;
4989 unsigned long long end
= base_start
+ e
[*idx
].size
;
4992 if (base_start
== end
)
4996 for (i
= *idx
; i
< num_extents
; i
++) {
4997 /* extend overlapping extents */
4998 if (e
[i
].start
>= base_start
&&
4999 e
[i
].start
<= end
) {
5002 if (e
[i
].start
+ e
[i
].size
> end
)
5003 end
= e
[i
].start
+ e
[i
].size
;
5004 } else if (e
[i
].start
> end
) {
5010 return end
- base_start
;
5013 static unsigned long long merge_extents(struct intel_super
*super
, int sum_extents
)
5015 /* build a composite disk with all known extents and generate a new
5016 * 'maxsize' given the "all disks in an array must share a common start
5017 * offset" constraint
5019 struct extent
*e
= calloc(sum_extents
, sizeof(*e
));
5023 unsigned long long pos
;
5024 unsigned long long start
= 0;
5025 unsigned long long maxsize
;
5026 unsigned long reserve
;
5031 /* coalesce and sort all extents. also, check to see if we need to
5032 * reserve space between member arrays
5035 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
5038 for (i
= 0; i
< dl
->extent_cnt
; i
++)
5041 qsort(e
, sum_extents
, sizeof(*e
), cmp_extent
);
5046 while (i
< sum_extents
) {
5047 e
[j
].start
= e
[i
].start
;
5048 e
[j
].size
= find_size(e
, &i
, sum_extents
);
5050 if (e
[j
-1].size
== 0)
5059 unsigned long long esize
;
5061 esize
= e
[i
].start
- pos
;
5062 if (esize
>= maxsize
) {
5067 pos
= e
[i
].start
+ e
[i
].size
;
5069 } while (e
[i
-1].size
);
5075 /* FIXME assumes volume at offset 0 is the first volume in a
5078 if (start_extent
> 0)
5079 reserve
= IMSM_RESERVED_SECTORS
; /* gap between raid regions */
5083 if (maxsize
< reserve
)
5086 super
->create_offset
= ~((__u32
) 0);
5087 if (start
+ reserve
> super
->create_offset
)
5088 return 0; /* start overflows create_offset */
5089 super
->create_offset
= start
+ reserve
;
5091 return maxsize
- reserve
;
5094 static int is_raid_level_supported(const struct imsm_orom
*orom
, int level
, int raiddisks
)
5096 if (level
< 0 || level
== 6 || level
== 4)
5099 /* if we have an orom prevent invalid raid levels */
5102 case 0: return imsm_orom_has_raid0(orom
);
5105 return imsm_orom_has_raid1e(orom
);
5106 return imsm_orom_has_raid1(orom
) && raiddisks
== 2;
5107 case 10: return imsm_orom_has_raid10(orom
) && raiddisks
== 4;
5108 case 5: return imsm_orom_has_raid5(orom
) && raiddisks
> 2;
5111 return 1; /* not on an Intel RAID platform so anything goes */
5116 static int imsm_default_chunk(const struct imsm_orom
*orom
)
5118 /* up to 512 if the plaform supports it, otherwise the platform max.
5119 * 128 if no platform detected
5121 int fs
= max(7, orom
? fls(orom
->sss
) : 0);
5123 return min(512, (1 << fs
));
5126 #define pr_vrb(fmt, arg...) (void) (verbose && fprintf(stderr, Name fmt, ##arg))
5128 validate_geometry_imsm_orom(struct intel_super
*super
, int level
, int layout
,
5129 int raiddisks
, int *chunk
, int verbose
)
5131 /* check/set platform and metadata limits/defaults */
5132 if (super
->orom
&& raiddisks
> super
->orom
->dpa
) {
5133 pr_vrb(": platform supports a maximum of %d disks per array\n",
5138 /* capabilities of OROM tested - copied from validate_geometry_imsm_volume */
5139 if (!is_raid_level_supported(super
->orom
, level
, raiddisks
)) {
5140 pr_vrb(": platform does not support raid%d with %d disk%s\n",
5141 level
, raiddisks
, raiddisks
> 1 ? "s" : "");
5145 if (chunk
&& (*chunk
== 0 || *chunk
== UnSet
))
5146 *chunk
= imsm_default_chunk(super
->orom
);
5148 if (super
->orom
&& chunk
&& !imsm_orom_has_chunk(super
->orom
, *chunk
)) {
5149 pr_vrb(": platform does not support a chunk size of: "
5154 if (layout
!= imsm_level_to_layout(level
)) {
5156 pr_vrb(": imsm raid 5 only supports the left-asymmetric layout\n");
5157 else if (level
== 10)
5158 pr_vrb(": imsm raid 10 only supports the n2 layout\n");
5160 pr_vrb(": imsm unknown layout %#x for this raid level %d\n",
5167 /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd
5168 * FIX ME add ahci details
5170 static int validate_geometry_imsm_volume(struct supertype
*st
, int level
,
5171 int layout
, int raiddisks
, int *chunk
,
5172 unsigned long long size
, char *dev
,
5173 unsigned long long *freesize
,
5177 struct intel_super
*super
= st
->sb
;
5178 struct imsm_super
*mpb
;
5180 unsigned long long pos
= 0;
5181 unsigned long long maxsize
;
5185 /* We must have the container info already read in. */
5189 mpb
= super
->anchor
;
5191 if (mpb
->num_raid_devs
> 0 && mpb
->num_disks
!= raiddisks
) {
5192 fprintf(stderr
, Name
": the option-rom requires all "
5193 "member disks to be a member of all volumes.\n");
5197 if (!validate_geometry_imsm_orom(super
, level
, layout
, raiddisks
, chunk
, verbose
)) {
5198 fprintf(stderr
, Name
": RAID gemetry validation failed. "
5199 "Cannot proceed with the action(s).\n");
5203 /* General test: make sure there is space for
5204 * 'raiddisks' device extents of size 'size' at a given
5207 unsigned long long minsize
= size
;
5208 unsigned long long start_offset
= MaxSector
;
5211 minsize
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
5212 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
5217 e
= get_extents(super
, dl
);
5220 unsigned long long esize
;
5221 esize
= e
[i
].start
- pos
;
5222 if (esize
>= minsize
)
5224 if (found
&& start_offset
== MaxSector
) {
5227 } else if (found
&& pos
!= start_offset
) {
5231 pos
= e
[i
].start
+ e
[i
].size
;
5233 } while (e
[i
-1].size
);
5238 if (dcnt
< raiddisks
) {
5240 fprintf(stderr
, Name
": imsm: Not enough "
5241 "devices with space for this array "
5249 /* This device must be a member of the set */
5250 if (stat(dev
, &stb
) < 0)
5252 if ((S_IFMT
& stb
.st_mode
) != S_IFBLK
)
5254 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
5255 if (dl
->major
== (int)major(stb
.st_rdev
) &&
5256 dl
->minor
== (int)minor(stb
.st_rdev
))
5261 fprintf(stderr
, Name
": %s is not in the "
5262 "same imsm set\n", dev
);
5264 } else if (super
->orom
&& dl
->index
< 0 && mpb
->num_raid_devs
) {
5265 /* If a volume is present then the current creation attempt
5266 * cannot incorporate new spares because the orom may not
5267 * understand this configuration (all member disks must be
5268 * members of each array in the container).
5270 fprintf(stderr
, Name
": %s is a spare and a volume"
5271 " is already defined for this container\n", dev
);
5272 fprintf(stderr
, Name
": The option-rom requires all member"
5273 " disks to be a member of all volumes\n");
5277 /* retrieve the largest free space block */
5278 e
= get_extents(super
, dl
);
5283 unsigned long long esize
;
5285 esize
= e
[i
].start
- pos
;
5286 if (esize
>= maxsize
)
5288 pos
= e
[i
].start
+ e
[i
].size
;
5290 } while (e
[i
-1].size
);
5295 fprintf(stderr
, Name
": unable to determine free space for: %s\n",
5299 if (maxsize
< size
) {
5301 fprintf(stderr
, Name
": %s not enough space (%llu < %llu)\n",
5302 dev
, maxsize
, size
);
5306 /* count total number of extents for merge */
5308 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
5310 i
+= dl
->extent_cnt
;
5312 maxsize
= merge_extents(super
, i
);
5314 if (!check_env("IMSM_NO_PLATFORM") &&
5315 mpb
->num_raid_devs
> 0 && size
&& size
!= maxsize
) {
5316 fprintf(stderr
, Name
": attempting to create a second "
5317 "volume with size less then remaining space. "
5322 if (maxsize
< size
|| maxsize
== 0) {
5324 fprintf(stderr
, Name
": not enough space after merge (%llu < %llu)\n",
5329 *freesize
= maxsize
;
5334 static int reserve_space(struct supertype
*st
, int raiddisks
,
5335 unsigned long long size
, int chunk
,
5336 unsigned long long *freesize
)
5338 struct intel_super
*super
= st
->sb
;
5339 struct imsm_super
*mpb
= super
->anchor
;
5344 unsigned long long maxsize
;
5345 unsigned long long minsize
;
5349 /* find the largest common start free region of the possible disks */
5353 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
5359 /* don't activate new spares if we are orom constrained
5360 * and there is already a volume active in the container
5362 if (super
->orom
&& dl
->index
< 0 && mpb
->num_raid_devs
)
5365 e
= get_extents(super
, dl
);
5368 for (i
= 1; e
[i
-1].size
; i
++)
5376 maxsize
= merge_extents(super
, extent_cnt
);
5380 minsize
= chunk
* 2;
5382 if (cnt
< raiddisks
||
5383 (super
->orom
&& used
&& used
!= raiddisks
) ||
5384 maxsize
< minsize
||
5386 fprintf(stderr
, Name
": not enough devices with space to create array.\n");
5387 return 0; /* No enough free spaces large enough */
5399 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
5401 dl
->raiddisk
= cnt
++;
5408 static int validate_geometry_imsm(struct supertype
*st
, int level
, int layout
,
5409 int raiddisks
, int *chunk
, unsigned long long size
,
5410 char *dev
, unsigned long long *freesize
,
5418 * if given unused devices create a container
5419 * if given given devices in a container create a member volume
5421 if (level
== LEVEL_CONTAINER
) {
5422 /* Must be a fresh device to add to a container */
5423 return validate_geometry_imsm_container(st
, level
, layout
,
5425 chunk
?*chunk
:0, size
,
5432 if (!validate_geometry_imsm_orom(st
->sb
, level
, layout
,
5436 /* we are being asked to automatically layout a
5437 * new volume based on the current contents of
5438 * the container. If the the parameters can be
5439 * satisfied reserve_space will record the disks,
5440 * start offset, and size of the volume to be
5441 * created. add_to_super and getinfo_super
5442 * detect when autolayout is in progress.
5445 return reserve_space(st
, raiddisks
, size
,
5446 chunk
?*chunk
:0, freesize
);
5451 /* creating in a given container */
5452 return validate_geometry_imsm_volume(st
, level
, layout
,
5453 raiddisks
, chunk
, size
,
5454 dev
, freesize
, verbose
);
5457 /* This device needs to be a device in an 'imsm' container */
5458 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
5462 Name
": Cannot create this array on device %s\n",
5467 if (errno
!= EBUSY
|| (fd
= open(dev
, O_RDONLY
, 0)) < 0) {
5469 fprintf(stderr
, Name
": Cannot open %s: %s\n",
5470 dev
, strerror(errno
));
5473 /* Well, it is in use by someone, maybe an 'imsm' container. */
5474 cfd
= open_container(fd
);
5478 fprintf(stderr
, Name
": Cannot use %s: It is busy\n",
5482 sra
= sysfs_read(cfd
, 0, GET_VERSION
);
5483 if (sra
&& sra
->array
.major_version
== -1 &&
5484 strcmp(sra
->text_version
, "imsm") == 0)
5488 /* This is a member of a imsm container. Load the container
5489 * and try to create a volume
5491 struct intel_super
*super
;
5493 if (load_super_imsm_all(st
, cfd
, (void **) &super
, NULL
) == 0) {
5495 st
->container_dev
= fd2devnum(cfd
);
5497 return validate_geometry_imsm_volume(st
, level
, layout
,
5506 fprintf(stderr
, Name
": failed container membership check\n");
5512 static void default_geometry_imsm(struct supertype
*st
, int *level
, int *layout
, int *chunk
)
5514 struct intel_super
*super
= st
->sb
;
5516 if (level
&& *level
== UnSet
)
5517 *level
= LEVEL_CONTAINER
;
5519 if (level
&& layout
&& *layout
== UnSet
)
5520 *layout
= imsm_level_to_layout(*level
);
5522 if (chunk
&& (*chunk
== UnSet
|| *chunk
== 0))
5523 *chunk
= imsm_default_chunk(super
->orom
);
5526 static void handle_missing(struct intel_super
*super
, struct imsm_dev
*dev
);
5528 static int kill_subarray_imsm(struct supertype
*st
)
5530 /* remove the subarray currently referenced by ->current_vol */
5532 struct intel_dev
**dp
;
5533 struct intel_super
*super
= st
->sb
;
5534 __u8 current_vol
= super
->current_vol
;
5535 struct imsm_super
*mpb
= super
->anchor
;
5537 if (super
->current_vol
< 0)
5539 super
->current_vol
= -1; /* invalidate subarray cursor */
5541 /* block deletions that would change the uuid of active subarrays
5543 * FIXME when immutable ids are available, but note that we'll
5544 * also need to fixup the invalidated/active subarray indexes in
5547 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
5550 if (i
< current_vol
)
5552 sprintf(subarray
, "%u", i
);
5553 if (is_subarray_active(subarray
, st
->devname
)) {
5555 Name
": deleting subarray-%d would change the UUID of active subarray-%d, aborting\n",
5562 if (st
->update_tail
) {
5563 struct imsm_update_kill_array
*u
= malloc(sizeof(*u
));
5567 u
->type
= update_kill_array
;
5568 u
->dev_idx
= current_vol
;
5569 append_metadata_update(st
, u
, sizeof(*u
));
5574 for (dp
= &super
->devlist
; *dp
;)
5575 if ((*dp
)->index
== current_vol
) {
5578 handle_missing(super
, (*dp
)->dev
);
5579 if ((*dp
)->index
> current_vol
)
5584 /* no more raid devices, all active components are now spares,
5585 * but of course failed are still failed
5587 if (--mpb
->num_raid_devs
== 0) {
5590 for (d
= super
->disks
; d
; d
= d
->next
)
5595 super
->updates_pending
++;
5600 static int update_subarray_imsm(struct supertype
*st
, char *subarray
,
5601 char *update
, struct mddev_ident
*ident
)
5603 /* update the subarray currently referenced by ->current_vol */
5604 struct intel_super
*super
= st
->sb
;
5605 struct imsm_super
*mpb
= super
->anchor
;
5607 if (strcmp(update
, "name") == 0) {
5608 char *name
= ident
->name
;
5612 if (is_subarray_active(subarray
, st
->devname
)) {
5614 Name
": Unable to update name of active subarray\n");
5618 if (!check_name(super
, name
, 0))
5621 vol
= strtoul(subarray
, &ep
, 10);
5622 if (*ep
!= '\0' || vol
>= super
->anchor
->num_raid_devs
)
5625 if (st
->update_tail
) {
5626 struct imsm_update_rename_array
*u
= malloc(sizeof(*u
));
5630 u
->type
= update_rename_array
;
5632 snprintf((char *) u
->name
, MAX_RAID_SERIAL_LEN
, "%s", name
);
5633 append_metadata_update(st
, u
, sizeof(*u
));
5635 struct imsm_dev
*dev
;
5638 dev
= get_imsm_dev(super
, vol
);
5639 snprintf((char *) dev
->volume
, MAX_RAID_SERIAL_LEN
, "%s", name
);
5640 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
5641 dev
= get_imsm_dev(super
, i
);
5642 handle_missing(super
, dev
);
5644 super
->updates_pending
++;
5652 static int is_gen_migration(struct imsm_dev
*dev
)
5657 if (!dev
->vol
.migr_state
)
5660 if (migr_type(dev
) == MIGR_GEN_MIGR
)
5665 #endif /* MDASSEMBLE */
5667 static int is_rebuilding(struct imsm_dev
*dev
)
5669 struct imsm_map
*migr_map
;
5671 if (!dev
->vol
.migr_state
)
5674 if (migr_type(dev
) != MIGR_REBUILD
)
5677 migr_map
= get_imsm_map(dev
, 1);
5679 if (migr_map
->map_state
== IMSM_T_STATE_DEGRADED
)
5685 static void update_recovery_start(struct intel_super
*super
,
5686 struct imsm_dev
*dev
,
5687 struct mdinfo
*array
)
5689 struct mdinfo
*rebuild
= NULL
;
5693 if (!is_rebuilding(dev
))
5696 /* Find the rebuild target, but punt on the dual rebuild case */
5697 for (d
= array
->devs
; d
; d
= d
->next
)
5698 if (d
->recovery_start
== 0) {
5705 /* (?) none of the disks are marked with
5706 * IMSM_ORD_REBUILD, so assume they are missing and the
5707 * disk_ord_tbl was not correctly updated
5709 dprintf("%s: failed to locate out-of-sync disk\n", __func__
);
5713 units
= __le32_to_cpu(dev
->vol
.curr_migr_unit
);
5714 rebuild
->recovery_start
= units
* blocks_per_migr_unit(super
, dev
);
5718 static int recover_backup_imsm(struct supertype
*st
, struct mdinfo
*info
);
5721 static struct mdinfo
*container_content_imsm(struct supertype
*st
, char *subarray
)
5723 /* Given a container loaded by load_super_imsm_all,
5724 * extract information about all the arrays into
5726 * If 'subarray' is given, just extract info about that array.
5728 * For each imsm_dev create an mdinfo, fill it in,
5729 * then look for matching devices in super->disks
5730 * and create appropriate device mdinfo.
5732 struct intel_super
*super
= st
->sb
;
5733 struct imsm_super
*mpb
= super
->anchor
;
5734 struct mdinfo
*rest
= NULL
;
5738 int spare_disks
= 0;
5740 /* do not assemble arrays when not all attributes are supported */
5741 if (imsm_check_attributes(mpb
->attributes
) == 0) {
5743 fprintf(stderr
, Name
": Unsupported attributes in IMSM metadata."
5744 "Arrays activation is blocked.\n");
5747 /* check for bad blocks */
5748 if (imsm_bbm_log_size(super
->anchor
)) {
5749 fprintf(stderr
, Name
": BBM log found in IMSM metadata."
5750 "Arrays activation is blocked.\n");
5755 /* count spare devices, not used in maps
5757 for (d
= super
->disks
; d
; d
= d
->next
)
5761 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
5762 struct imsm_dev
*dev
;
5763 struct imsm_map
*map
;
5764 struct imsm_map
*map2
;
5765 struct mdinfo
*this;
5770 (i
!= strtoul(subarray
, &ep
, 10) || *ep
!= '\0'))
5773 dev
= get_imsm_dev(super
, i
);
5774 map
= get_imsm_map(dev
, 0);
5775 map2
= get_imsm_map(dev
, 1);
5777 /* do not publish arrays that are in the middle of an
5778 * unsupported migration
5780 if (dev
->vol
.migr_state
&&
5781 (migr_type(dev
) == MIGR_STATE_CHANGE
)) {
5782 fprintf(stderr
, Name
": cannot assemble volume '%.16s':"
5783 " unsupported migration in progress\n",
5787 /* do not publish arrays that are not support by controller's
5791 chunk
= __le16_to_cpu(map
->blocks_per_strip
) >> 1;
5792 this = malloc(sizeof(*this));
5794 fprintf(stderr
, Name
": failed to allocate %zu bytes\n",
5799 super
->current_vol
= i
;
5800 getinfo_super_imsm_volume(st
, this, NULL
);
5803 /* mdadm does not support all metadata features- set the bit in all arrays state */
5804 if (!validate_geometry_imsm_orom(super
,
5805 get_imsm_raid_level(map
), /* RAID level */
5806 imsm_level_to_layout(get_imsm_raid_level(map
)),
5807 map
->num_members
, /* raid disks */
5810 fprintf(stderr
, Name
": IMSM RAID geometry validation"
5811 " failed. Array %s activation is blocked.\n",
5813 this->array
.state
|=
5814 (1<<MD_SB_BLOCK_CONTAINER_RESHAPE
) |
5815 (1<<MD_SB_BLOCK_VOLUME
);
5819 /* if array has bad blocks, set suitable bit in all arrays state */
5821 this->array
.state
|=
5822 (1<<MD_SB_BLOCK_CONTAINER_RESHAPE
) |
5823 (1<<MD_SB_BLOCK_VOLUME
);
5825 for (slot
= 0 ; slot
< map
->num_members
; slot
++) {
5826 unsigned long long recovery_start
;
5827 struct mdinfo
*info_d
;
5834 idx
= get_imsm_disk_idx(dev
, slot
, 0);
5835 ord
= get_imsm_ord_tbl_ent(dev
, slot
, -1);
5836 for (d
= super
->disks
; d
; d
= d
->next
)
5837 if (d
->index
== idx
)
5840 recovery_start
= MaxSector
;
5843 if (d
&& is_failed(&d
->disk
))
5845 if (ord
& IMSM_ORD_REBUILD
)
5849 * if we skip some disks the array will be assmebled degraded;
5850 * reset resync start to avoid a dirty-degraded
5851 * situation when performing the intial sync
5853 * FIXME handle dirty degraded
5855 if ((skip
|| recovery_start
== 0) && !dev
->vol
.dirty
)
5856 this->resync_start
= MaxSector
;
5860 info_d
= calloc(1, sizeof(*info_d
));
5862 fprintf(stderr
, Name
": failed to allocate disk"
5863 " for volume %.16s\n", dev
->volume
);
5864 info_d
= this->devs
;
5866 struct mdinfo
*d
= info_d
->next
;
5875 info_d
->next
= this->devs
;
5876 this->devs
= info_d
;
5878 info_d
->disk
.number
= d
->index
;
5879 info_d
->disk
.major
= d
->major
;
5880 info_d
->disk
.minor
= d
->minor
;
5881 info_d
->disk
.raid_disk
= slot
;
5882 info_d
->recovery_start
= recovery_start
;
5884 if (slot
< map2
->num_members
)
5885 info_d
->disk
.state
= (1 << MD_DISK_ACTIVE
);
5887 this->array
.spare_disks
++;
5889 if (slot
< map
->num_members
)
5890 info_d
->disk
.state
= (1 << MD_DISK_ACTIVE
);
5892 this->array
.spare_disks
++;
5894 if (info_d
->recovery_start
== MaxSector
)
5895 this->array
.working_disks
++;
5897 info_d
->events
= __le32_to_cpu(mpb
->generation_num
);
5898 info_d
->data_offset
= __le32_to_cpu(map
->pba_of_lba0
);
5899 info_d
->component_size
= __le32_to_cpu(map
->blocks_per_member
);
5901 /* now that the disk list is up-to-date fixup recovery_start */
5902 update_recovery_start(super
, dev
, this);
5903 this->array
.spare_disks
+= spare_disks
;
5906 /* check for reshape */
5907 if (this->reshape_active
== 1)
5908 recover_backup_imsm(st
, this);
5917 static __u8
imsm_check_degraded(struct intel_super
*super
, struct imsm_dev
*dev
, int failed
)
5919 struct imsm_map
*map
= get_imsm_map(dev
, 0);
5922 return map
->map_state
== IMSM_T_STATE_UNINITIALIZED
?
5923 IMSM_T_STATE_UNINITIALIZED
: IMSM_T_STATE_NORMAL
;
5925 switch (get_imsm_raid_level(map
)) {
5927 return IMSM_T_STATE_FAILED
;
5930 if (failed
< map
->num_members
)
5931 return IMSM_T_STATE_DEGRADED
;
5933 return IMSM_T_STATE_FAILED
;
5938 * check to see if any mirrors have failed, otherwise we
5939 * are degraded. Even numbered slots are mirrored on
5943 /* gcc -Os complains that this is unused */
5944 int insync
= insync
;
5946 for (i
= 0; i
< map
->num_members
; i
++) {
5947 __u32 ord
= get_imsm_ord_tbl_ent(dev
, i
, -1);
5948 int idx
= ord_to_idx(ord
);
5949 struct imsm_disk
*disk
;
5951 /* reset the potential in-sync count on even-numbered
5952 * slots. num_copies is always 2 for imsm raid10
5957 disk
= get_imsm_disk(super
, idx
);
5958 if (!disk
|| is_failed(disk
) || ord
& IMSM_ORD_REBUILD
)
5961 /* no in-sync disks left in this mirror the
5965 return IMSM_T_STATE_FAILED
;
5968 return IMSM_T_STATE_DEGRADED
;
5972 return IMSM_T_STATE_DEGRADED
;
5974 return IMSM_T_STATE_FAILED
;
5980 return map
->map_state
;
5983 static int imsm_count_failed(struct intel_super
*super
, struct imsm_dev
*dev
)
5987 struct imsm_disk
*disk
;
5988 struct imsm_map
*map
= get_imsm_map(dev
, 0);
5989 struct imsm_map
*prev
= get_imsm_map(dev
, dev
->vol
.migr_state
);
5990 struct imsm_map
*map_for_loop
;
5994 /* at the beginning of migration we set IMSM_ORD_REBUILD on
5995 * disks that are being rebuilt. New failures are recorded to
5996 * map[0]. So we look through all the disks we started with and
5997 * see if any failures are still present, or if any new ones
6000 map_for_loop
= prev
;
6001 if (is_gen_migration(dev
))
6002 if (prev
&& (map
->num_members
> prev
->num_members
))
6005 for (i
= 0; i
< map_for_loop
->num_members
; i
++) {
6007 if (i
< prev
->num_members
)
6008 ord
|= __le32_to_cpu(prev
->disk_ord_tbl
[i
]);
6009 if (i
< map
->num_members
)
6010 ord
|= __le32_to_cpu(map
->disk_ord_tbl
[i
]);
6011 idx
= ord_to_idx(ord
);
6013 disk
= get_imsm_disk(super
, idx
);
6014 if (!disk
|| is_failed(disk
) || ord
& IMSM_ORD_REBUILD
)
6022 static int imsm_open_new(struct supertype
*c
, struct active_array
*a
,
6025 struct intel_super
*super
= c
->sb
;
6026 struct imsm_super
*mpb
= super
->anchor
;
6028 if (atoi(inst
) >= mpb
->num_raid_devs
) {
6029 fprintf(stderr
, "%s: subarry index %d, out of range\n",
6030 __func__
, atoi(inst
));
6034 dprintf("imsm: open_new %s\n", inst
);
6035 a
->info
.container_member
= atoi(inst
);
6039 static int is_resyncing(struct imsm_dev
*dev
)
6041 struct imsm_map
*migr_map
;
6043 if (!dev
->vol
.migr_state
)
6046 if (migr_type(dev
) == MIGR_INIT
||
6047 migr_type(dev
) == MIGR_REPAIR
)
6050 if (migr_type(dev
) == MIGR_GEN_MIGR
)
6053 migr_map
= get_imsm_map(dev
, 1);
6055 if ((migr_map
->map_state
== IMSM_T_STATE_NORMAL
) &&
6056 (dev
->vol
.migr_type
!= MIGR_GEN_MIGR
))
6062 /* return true if we recorded new information */
6063 static int mark_failure(struct imsm_dev
*dev
, struct imsm_disk
*disk
, int idx
)
6067 struct imsm_map
*map
;
6068 char buf
[MAX_RAID_SERIAL_LEN
+3];
6069 unsigned int len
, shift
= 0;
6071 /* new failures are always set in map[0] */
6072 map
= get_imsm_map(dev
, 0);
6074 slot
= get_imsm_disk_slot(map
, idx
);
6078 ord
= __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
6079 if (is_failed(disk
) && (ord
& IMSM_ORD_REBUILD
))
6082 memcpy(buf
, disk
->serial
, MAX_RAID_SERIAL_LEN
);
6083 buf
[MAX_RAID_SERIAL_LEN
] = '\000';
6085 if ((len
= strlen(buf
)) >= MAX_RAID_SERIAL_LEN
)
6086 shift
= len
- MAX_RAID_SERIAL_LEN
+ 1;
6087 strncpy((char *)disk
->serial
, &buf
[shift
], MAX_RAID_SERIAL_LEN
);
6089 disk
->status
|= FAILED_DISK
;
6090 set_imsm_ord_tbl_ent(map
, slot
, idx
| IMSM_ORD_REBUILD
);
6091 if (is_gen_migration(dev
)) {
6092 struct imsm_map
*map2
= get_imsm_map(dev
, 1);
6093 if (slot
< map2
->num_members
)
6094 set_imsm_ord_tbl_ent(map2
, slot
,
6095 idx
| IMSM_ORD_REBUILD
);
6097 if (map
->failed_disk_num
== 0xff)
6098 map
->failed_disk_num
= slot
;
6102 static void mark_missing(struct imsm_dev
*dev
, struct imsm_disk
*disk
, int idx
)
6104 mark_failure(dev
, disk
, idx
);
6106 if (disk
->scsi_id
== __cpu_to_le32(~(__u32
)0))
6109 disk
->scsi_id
= __cpu_to_le32(~(__u32
)0);
6110 memmove(&disk
->serial
[0], &disk
->serial
[1], MAX_RAID_SERIAL_LEN
- 1);
6113 static void handle_missing(struct intel_super
*super
, struct imsm_dev
*dev
)
6119 if (!super
->missing
)
6121 failed
= imsm_count_failed(super
, dev
);
6122 map_state
= imsm_check_degraded(super
, dev
, failed
);
6124 dprintf("imsm: mark missing\n");
6125 end_migration(dev
, map_state
);
6126 for (dl
= super
->missing
; dl
; dl
= dl
->next
)
6127 mark_missing(dev
, &dl
->disk
, dl
->index
);
6128 super
->updates_pending
++;
6131 static unsigned long long imsm_set_array_size(struct imsm_dev
*dev
)
6133 int used_disks
= imsm_num_data_members(dev
, 0);
6134 unsigned long long array_blocks
;
6135 struct imsm_map
*map
;
6137 if (used_disks
== 0) {
6138 /* when problems occures
6139 * return current array_blocks value
6141 array_blocks
= __le32_to_cpu(dev
->size_high
);
6142 array_blocks
= array_blocks
<< 32;
6143 array_blocks
+= __le32_to_cpu(dev
->size_low
);
6145 return array_blocks
;
6148 /* set array size in metadata
6150 map
= get_imsm_map(dev
, 0);
6151 array_blocks
= map
->blocks_per_member
* used_disks
;
6153 /* round array size down to closest MB
6155 array_blocks
= (array_blocks
>> SECT_PER_MB_SHIFT
) << SECT_PER_MB_SHIFT
;
6156 dev
->size_low
= __cpu_to_le32((__u32
)array_blocks
);
6157 dev
->size_high
= __cpu_to_le32((__u32
)(array_blocks
>> 32));
6159 return array_blocks
;
6162 static void imsm_set_disk(struct active_array
*a
, int n
, int state
);
6164 static void imsm_progress_container_reshape(struct intel_super
*super
)
6166 /* if no device has a migr_state, but some device has a
6167 * different number of members than the previous device, start
6168 * changing the number of devices in this device to match
6171 struct imsm_super
*mpb
= super
->anchor
;
6172 int prev_disks
= -1;
6176 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
6177 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
6178 struct imsm_map
*map
= get_imsm_map(dev
, 0);
6179 struct imsm_map
*map2
;
6180 int prev_num_members
;
6182 if (dev
->vol
.migr_state
)
6185 if (prev_disks
== -1)
6186 prev_disks
= map
->num_members
;
6187 if (prev_disks
== map
->num_members
)
6190 /* OK, this array needs to enter reshape mode.
6191 * i.e it needs a migr_state
6194 copy_map_size
= sizeof_imsm_map(map
);
6195 prev_num_members
= map
->num_members
;
6196 map
->num_members
= prev_disks
;
6197 dev
->vol
.migr_state
= 1;
6198 dev
->vol
.curr_migr_unit
= 0;
6199 set_migr_type(dev
, MIGR_GEN_MIGR
);
6200 for (i
= prev_num_members
;
6201 i
< map
->num_members
; i
++)
6202 set_imsm_ord_tbl_ent(map
, i
, i
);
6203 map2
= get_imsm_map(dev
, 1);
6204 /* Copy the current map */
6205 memcpy(map2
, map
, copy_map_size
);
6206 map2
->num_members
= prev_num_members
;
6208 imsm_set_array_size(dev
);
6209 super
->updates_pending
++;
6213 /* Handle dirty -> clean transititions, resync and reshape. Degraded and rebuild
6214 * states are handled in imsm_set_disk() with one exception, when a
6215 * resync is stopped due to a new failure this routine will set the
6216 * 'degraded' state for the array.
6218 static int imsm_set_array_state(struct active_array
*a
, int consistent
)
6220 int inst
= a
->info
.container_member
;
6221 struct intel_super
*super
= a
->container
->sb
;
6222 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
6223 struct imsm_map
*map
= get_imsm_map(dev
, 0);
6224 int failed
= imsm_count_failed(super
, dev
);
6225 __u8 map_state
= imsm_check_degraded(super
, dev
, failed
);
6226 __u32 blocks_per_unit
;
6228 if (dev
->vol
.migr_state
&&
6229 dev
->vol
.migr_type
== MIGR_GEN_MIGR
) {
6230 /* array state change is blocked due to reshape action
6232 * - abort the reshape (if last_checkpoint is 0 and action!= reshape)
6233 * - finish the reshape (if last_checkpoint is big and action != reshape)
6234 * - update curr_migr_unit
6236 if (a
->curr_action
== reshape
) {
6237 /* still reshaping, maybe update curr_migr_unit */
6238 goto mark_checkpoint
;
6240 if (a
->last_checkpoint
== 0 && a
->prev_action
== reshape
) {
6241 /* for some reason we aborted the reshape.
6243 * disable automatic metadata rollback
6244 * user action is required to recover process
6247 struct imsm_map
*map2
= get_imsm_map(dev
, 1);
6248 dev
->vol
.migr_state
= 0;
6249 set_migr_type(dev
, 0);
6250 dev
->vol
.curr_migr_unit
= 0;
6251 memcpy(map
, map2
, sizeof_imsm_map(map2
));
6252 super
->updates_pending
++;
6255 if (a
->last_checkpoint
>= a
->info
.component_size
) {
6256 unsigned long long array_blocks
;
6260 used_disks
= imsm_num_data_members(dev
, 0);
6261 if (used_disks
> 0) {
6263 map
->blocks_per_member
*
6265 /* round array size down to closest MB
6267 array_blocks
= (array_blocks
6268 >> SECT_PER_MB_SHIFT
)
6269 << SECT_PER_MB_SHIFT
;
6270 a
->info
.custom_array_size
= array_blocks
;
6271 /* encourage manager to update array
6275 a
->check_reshape
= 1;
6277 /* finalize online capacity expansion/reshape */
6278 for (mdi
= a
->info
.devs
; mdi
; mdi
= mdi
->next
)
6280 mdi
->disk
.raid_disk
,
6283 imsm_progress_container_reshape(super
);
6288 /* before we activate this array handle any missing disks */
6289 if (consistent
== 2)
6290 handle_missing(super
, dev
);
6292 if (consistent
== 2 &&
6293 (!is_resync_complete(&a
->info
) ||
6294 map_state
!= IMSM_T_STATE_NORMAL
||
6295 dev
->vol
.migr_state
))
6298 if (is_resync_complete(&a
->info
)) {
6299 /* complete intialization / resync,
6300 * recovery and interrupted recovery is completed in
6303 if (is_resyncing(dev
)) {
6304 dprintf("imsm: mark resync done\n");
6305 end_migration(dev
, map_state
);
6306 super
->updates_pending
++;
6307 a
->last_checkpoint
= 0;
6309 } else if ((!is_resyncing(dev
) && !failed
) &&
6310 (imsm_reshape_blocks_arrays_changes(super
) == 0)) {
6311 /* mark the start of the init process if nothing is failed */
6312 dprintf("imsm: mark resync start\n");
6313 if (map
->map_state
== IMSM_T_STATE_UNINITIALIZED
)
6314 migrate(dev
, super
, IMSM_T_STATE_NORMAL
, MIGR_INIT
);
6316 migrate(dev
, super
, IMSM_T_STATE_NORMAL
, MIGR_REPAIR
);
6317 super
->updates_pending
++;
6321 /* skip checkpointing for general migration,
6322 * it is controlled in mdadm
6324 if (is_gen_migration(dev
))
6325 goto skip_mark_checkpoint
;
6327 /* check if we can update curr_migr_unit from resync_start, recovery_start */
6328 blocks_per_unit
= blocks_per_migr_unit(super
, dev
);
6329 if (blocks_per_unit
) {
6333 units
= a
->last_checkpoint
/ blocks_per_unit
;
6336 /* check that we did not overflow 32-bits, and that
6337 * curr_migr_unit needs updating
6339 if (units32
== units
&&
6341 __le32_to_cpu(dev
->vol
.curr_migr_unit
) != units32
) {
6342 dprintf("imsm: mark checkpoint (%u)\n", units32
);
6343 dev
->vol
.curr_migr_unit
= __cpu_to_le32(units32
);
6344 super
->updates_pending
++;
6348 skip_mark_checkpoint
:
6349 /* mark dirty / clean */
6350 if (dev
->vol
.dirty
!= !consistent
) {
6351 dprintf("imsm: mark '%s'\n", consistent
? "clean" : "dirty");
6356 super
->updates_pending
++;
6362 static void imsm_set_disk(struct active_array
*a
, int n
, int state
)
6364 int inst
= a
->info
.container_member
;
6365 struct intel_super
*super
= a
->container
->sb
;
6366 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
6367 struct imsm_map
*map
= get_imsm_map(dev
, 0);
6368 struct imsm_disk
*disk
;
6373 if (n
> map
->num_members
)
6374 fprintf(stderr
, "imsm: set_disk %d out of range 0..%d\n",
6375 n
, map
->num_members
- 1);
6380 dprintf("imsm: set_disk %d:%x\n", n
, state
);
6382 ord
= get_imsm_ord_tbl_ent(dev
, n
, -2);
6383 disk
= get_imsm_disk(super
, ord_to_idx(ord
));
6385 /* check for new failures */
6386 if (state
& DS_FAULTY
) {
6387 if (mark_failure(dev
, disk
, ord_to_idx(ord
)))
6388 super
->updates_pending
++;
6391 /* check if in_sync */
6392 if (state
& DS_INSYNC
&& ord
& IMSM_ORD_REBUILD
&& is_rebuilding(dev
)) {
6393 struct imsm_map
*migr_map
= get_imsm_map(dev
, 1);
6395 set_imsm_ord_tbl_ent(migr_map
, n
, ord_to_idx(ord
));
6396 super
->updates_pending
++;
6399 failed
= imsm_count_failed(super
, dev
);
6400 map_state
= imsm_check_degraded(super
, dev
, failed
);
6402 /* check if recovery complete, newly degraded, or failed */
6403 if (map_state
== IMSM_T_STATE_NORMAL
&& is_rebuilding(dev
)) {
6404 end_migration(dev
, map_state
);
6405 map
= get_imsm_map(dev
, 0);
6406 map
->failed_disk_num
= ~0;
6407 super
->updates_pending
++;
6408 a
->last_checkpoint
= 0;
6409 } else if (map_state
== IMSM_T_STATE_DEGRADED
&&
6410 map
->map_state
!= map_state
&&
6411 !dev
->vol
.migr_state
) {
6412 dprintf("imsm: mark degraded\n");
6413 map
->map_state
= map_state
;
6414 super
->updates_pending
++;
6415 a
->last_checkpoint
= 0;
6416 } else if (map_state
== IMSM_T_STATE_FAILED
&&
6417 map
->map_state
!= map_state
) {
6418 dprintf("imsm: mark failed\n");
6419 end_migration(dev
, map_state
);
6420 super
->updates_pending
++;
6421 a
->last_checkpoint
= 0;
6422 } else if (is_gen_migration(dev
)) {
6423 dprintf("imsm: Detected General Migration in state: ");
6424 if (map_state
== IMSM_T_STATE_NORMAL
) {
6425 end_migration(dev
, map_state
);
6426 map
= get_imsm_map(dev
, 0);
6427 map
->failed_disk_num
= ~0;
6428 dprintf("normal\n");
6430 if (map_state
== IMSM_T_STATE_DEGRADED
) {
6431 printf("degraded\n");
6432 end_migration(dev
, map_state
);
6434 dprintf("failed\n");
6436 map
->map_state
= map_state
;
6438 super
->updates_pending
++;
6442 static int store_imsm_mpb(int fd
, struct imsm_super
*mpb
)
6445 __u32 mpb_size
= __le32_to_cpu(mpb
->mpb_size
);
6446 unsigned long long dsize
;
6447 unsigned long long sectors
;
6449 get_dev_size(fd
, NULL
, &dsize
);
6451 if (mpb_size
> 512) {
6452 /* -1 to account for anchor */
6453 sectors
= mpb_sectors(mpb
) - 1;
6455 /* write the extended mpb to the sectors preceeding the anchor */
6456 if (lseek64(fd
, dsize
- (512 * (2 + sectors
)), SEEK_SET
) < 0)
6459 if ((unsigned long long)write(fd
, buf
+ 512, 512 * sectors
)
6464 /* first block is stored on second to last sector of the disk */
6465 if (lseek64(fd
, dsize
- (512 * 2), SEEK_SET
) < 0)
6468 if (write(fd
, buf
, 512) != 512)
6474 static void imsm_sync_metadata(struct supertype
*container
)
6476 struct intel_super
*super
= container
->sb
;
6478 dprintf("sync metadata: %d\n", super
->updates_pending
);
6479 if (!super
->updates_pending
)
6482 write_super_imsm(container
, 0);
6484 super
->updates_pending
= 0;
6487 static struct dl
*imsm_readd(struct intel_super
*super
, int idx
, struct active_array
*a
)
6489 struct imsm_dev
*dev
= get_imsm_dev(super
, a
->info
.container_member
);
6490 int i
= get_imsm_disk_idx(dev
, idx
, -1);
6493 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
6497 if (dl
&& is_failed(&dl
->disk
))
6501 dprintf("%s: found %x:%x\n", __func__
, dl
->major
, dl
->minor
);
6506 static struct dl
*imsm_add_spare(struct intel_super
*super
, int slot
,
6507 struct active_array
*a
, int activate_new
,
6508 struct mdinfo
*additional_test_list
)
6510 struct imsm_dev
*dev
= get_imsm_dev(super
, a
->info
.container_member
);
6511 int idx
= get_imsm_disk_idx(dev
, slot
, -1);
6512 struct imsm_super
*mpb
= super
->anchor
;
6513 struct imsm_map
*map
;
6514 unsigned long long pos
;
6519 __u32 array_start
= 0;
6520 __u32 array_end
= 0;
6522 struct mdinfo
*test_list
;
6524 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
6525 /* If in this array, skip */
6526 for (d
= a
->info
.devs
; d
; d
= d
->next
)
6527 if (d
->state_fd
>= 0 &&
6528 d
->disk
.major
== dl
->major
&&
6529 d
->disk
.minor
== dl
->minor
) {
6530 dprintf("%x:%x already in array\n",
6531 dl
->major
, dl
->minor
);
6536 test_list
= additional_test_list
;
6538 if (test_list
->disk
.major
== dl
->major
&&
6539 test_list
->disk
.minor
== dl
->minor
) {
6540 dprintf("%x:%x already in additional test list\n",
6541 dl
->major
, dl
->minor
);
6544 test_list
= test_list
->next
;
6549 /* skip in use or failed drives */
6550 if (is_failed(&dl
->disk
) || idx
== dl
->index
||
6552 dprintf("%x:%x status (failed: %d index: %d)\n",
6553 dl
->major
, dl
->minor
, is_failed(&dl
->disk
), idx
);
6557 /* skip pure spares when we are looking for partially
6558 * assimilated drives
6560 if (dl
->index
== -1 && !activate_new
)
6563 /* Does this unused device have the requisite free space?
6564 * It needs to be able to cover all member volumes
6566 ex
= get_extents(super
, dl
);
6568 dprintf("cannot get extents\n");
6571 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
6572 dev
= get_imsm_dev(super
, i
);
6573 map
= get_imsm_map(dev
, 0);
6575 /* check if this disk is already a member of
6578 if (get_imsm_disk_slot(map
, dl
->index
) >= 0)
6584 array_start
= __le32_to_cpu(map
->pba_of_lba0
);
6585 array_end
= array_start
+
6586 __le32_to_cpu(map
->blocks_per_member
) - 1;
6589 /* check that we can start at pba_of_lba0 with
6590 * blocks_per_member of space
6592 if (array_start
>= pos
&& array_end
< ex
[j
].start
) {
6596 pos
= ex
[j
].start
+ ex
[j
].size
;
6598 } while (ex
[j
-1].size
);
6605 if (i
< mpb
->num_raid_devs
) {
6606 dprintf("%x:%x does not have %u to %u available\n",
6607 dl
->major
, dl
->minor
, array_start
, array_end
);
6618 static int imsm_rebuild_allowed(struct supertype
*cont
, int dev_idx
, int failed
)
6620 struct imsm_dev
*dev2
;
6621 struct imsm_map
*map
;
6627 dev2
= get_imsm_dev(cont
->sb
, dev_idx
);
6629 state
= imsm_check_degraded(cont
->sb
, dev2
, failed
);
6630 if (state
== IMSM_T_STATE_FAILED
) {
6631 map
= get_imsm_map(dev2
, 0);
6634 for (slot
= 0; slot
< map
->num_members
; slot
++) {
6636 * Check if failed disks are deleted from intel
6637 * disk list or are marked to be deleted
6639 idx
= get_imsm_disk_idx(dev2
, slot
, -1);
6640 idisk
= get_imsm_dl_disk(cont
->sb
, idx
);
6642 * Do not rebuild the array if failed disks
6643 * from failed sub-array are not removed from
6647 is_failed(&idisk
->disk
) &&
6648 (idisk
->action
!= DISK_REMOVE
))
6656 static struct mdinfo
*imsm_activate_spare(struct active_array
*a
,
6657 struct metadata_update
**updates
)
6660 * Find a device with unused free space and use it to replace a
6661 * failed/vacant region in an array. We replace failed regions one a
6662 * array at a time. The result is that a new spare disk will be added
6663 * to the first failed array and after the monitor has finished
6664 * propagating failures the remainder will be consumed.
6666 * FIXME add a capability for mdmon to request spares from another
6670 struct intel_super
*super
= a
->container
->sb
;
6671 int inst
= a
->info
.container_member
;
6672 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
6673 struct imsm_map
*map
= get_imsm_map(dev
, 0);
6674 int failed
= a
->info
.array
.raid_disks
;
6675 struct mdinfo
*rv
= NULL
;
6678 struct metadata_update
*mu
;
6680 struct imsm_update_activate_spare
*u
;
6685 for (d
= a
->info
.devs
; d
; d
= d
->next
) {
6686 if ((d
->curr_state
& DS_FAULTY
) &&
6688 /* wait for Removal to happen */
6690 if (d
->state_fd
>= 0)
6694 dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n",
6695 inst
, failed
, a
->info
.array
.raid_disks
, a
->info
.array
.level
);
6697 if (imsm_reshape_blocks_arrays_changes(super
))
6700 if (a
->info
.array
.level
== 4)
6701 /* No repair for takeovered array
6702 * imsm doesn't support raid4
6706 if (imsm_check_degraded(super
, dev
, failed
) != IMSM_T_STATE_DEGRADED
)
6710 * If there are any failed disks check state of the other volume.
6711 * Block rebuild if the another one is failed until failed disks
6712 * are removed from container.
6715 dprintf("found failed disks in %.*s, check if there another"
6716 "failed sub-array.\n",
6717 MAX_RAID_SERIAL_LEN
, dev
->volume
);
6718 /* check if states of the other volumes allow for rebuild */
6719 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
6721 allowed
= imsm_rebuild_allowed(a
->container
,
6729 /* For each slot, if it is not working, find a spare */
6730 for (i
= 0; i
< a
->info
.array
.raid_disks
; i
++) {
6731 for (d
= a
->info
.devs
; d
; d
= d
->next
)
6732 if (d
->disk
.raid_disk
== i
)
6734 dprintf("found %d: %p %x\n", i
, d
, d
?d
->curr_state
:0);
6735 if (d
&& (d
->state_fd
>= 0))
6739 * OK, this device needs recovery. Try to re-add the
6740 * previous occupant of this slot, if this fails see if
6741 * we can continue the assimilation of a spare that was
6742 * partially assimilated, finally try to activate a new
6745 dl
= imsm_readd(super
, i
, a
);
6747 dl
= imsm_add_spare(super
, i
, a
, 0, rv
);
6749 dl
= imsm_add_spare(super
, i
, a
, 1, rv
);
6753 /* found a usable disk with enough space */
6754 di
= malloc(sizeof(*di
));
6757 memset(di
, 0, sizeof(*di
));
6759 /* dl->index will be -1 in the case we are activating a
6760 * pristine spare. imsm_process_update() will create a
6761 * new index in this case. Once a disk is found to be
6762 * failed in all member arrays it is kicked from the
6765 di
->disk
.number
= dl
->index
;
6767 /* (ab)use di->devs to store a pointer to the device
6770 di
->devs
= (struct mdinfo
*) dl
;
6772 di
->disk
.raid_disk
= i
;
6773 di
->disk
.major
= dl
->major
;
6774 di
->disk
.minor
= dl
->minor
;
6776 di
->recovery_start
= 0;
6777 di
->data_offset
= __le32_to_cpu(map
->pba_of_lba0
);
6778 di
->component_size
= a
->info
.component_size
;
6779 di
->container_member
= inst
;
6780 super
->random
= random32();
6784 dprintf("%x:%x to be %d at %llu\n", dl
->major
, dl
->minor
,
6785 i
, di
->data_offset
);
6789 /* No spares found */
6791 /* Now 'rv' has a list of devices to return.
6792 * Create a metadata_update record to update the
6793 * disk_ord_tbl for the array
6795 mu
= malloc(sizeof(*mu
));
6797 mu
->buf
= malloc(sizeof(struct imsm_update_activate_spare
) * num_spares
);
6798 if (mu
->buf
== NULL
) {
6805 struct mdinfo
*n
= rv
->next
;
6814 mu
->space_list
= NULL
;
6815 mu
->len
= sizeof(struct imsm_update_activate_spare
) * num_spares
;
6816 mu
->next
= *updates
;
6817 u
= (struct imsm_update_activate_spare
*) mu
->buf
;
6819 for (di
= rv
; di
; di
= di
->next
) {
6820 u
->type
= update_activate_spare
;
6821 u
->dl
= (struct dl
*) di
->devs
;
6823 u
->slot
= di
->disk
.raid_disk
;
6834 static int disks_overlap(struct intel_super
*super
, int idx
, struct imsm_update_create_array
*u
)
6836 struct imsm_dev
*dev
= get_imsm_dev(super
, idx
);
6837 struct imsm_map
*map
= get_imsm_map(dev
, 0);
6838 struct imsm_map
*new_map
= get_imsm_map(&u
->dev
, 0);
6839 struct disk_info
*inf
= get_disk_info(u
);
6840 struct imsm_disk
*disk
;
6844 for (i
= 0; i
< map
->num_members
; i
++) {
6845 disk
= get_imsm_disk(super
, get_imsm_disk_idx(dev
, i
, -1));
6846 for (j
= 0; j
< new_map
->num_members
; j
++)
6847 if (serialcmp(disk
->serial
, inf
[j
].serial
) == 0)
6855 static struct dl
*get_disk_super(struct intel_super
*super
, int major
, int minor
)
6857 struct dl
*dl
= NULL
;
6858 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
6859 if ((dl
->major
== major
) && (dl
->minor
== minor
))
6864 static int remove_disk_super(struct intel_super
*super
, int major
, int minor
)
6866 struct dl
*prev
= NULL
;
6870 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
6871 if ((dl
->major
== major
) && (dl
->minor
== minor
)) {
6874 prev
->next
= dl
->next
;
6876 super
->disks
= dl
->next
;
6878 __free_imsm_disk(dl
);
6879 dprintf("%s: removed %x:%x\n",
6880 __func__
, major
, minor
);
6888 static void imsm_delete(struct intel_super
*super
, struct dl
**dlp
, unsigned index
);
6890 static int add_remove_disk_update(struct intel_super
*super
)
6892 int check_degraded
= 0;
6893 struct dl
*disk
= NULL
;
6894 /* add/remove some spares to/from the metadata/contrainer */
6895 while (super
->disk_mgmt_list
) {
6896 struct dl
*disk_cfg
;
6898 disk_cfg
= super
->disk_mgmt_list
;
6899 super
->disk_mgmt_list
= disk_cfg
->next
;
6900 disk_cfg
->next
= NULL
;
6902 if (disk_cfg
->action
== DISK_ADD
) {
6903 disk_cfg
->next
= super
->disks
;
6904 super
->disks
= disk_cfg
;
6906 dprintf("%s: added %x:%x\n",
6907 __func__
, disk_cfg
->major
,
6909 } else if (disk_cfg
->action
== DISK_REMOVE
) {
6910 dprintf("Disk remove action processed: %x.%x\n",
6911 disk_cfg
->major
, disk_cfg
->minor
);
6912 disk
= get_disk_super(super
,
6916 /* store action status */
6917 disk
->action
= DISK_REMOVE
;
6918 /* remove spare disks only */
6919 if (disk
->index
== -1) {
6920 remove_disk_super(super
,
6925 /* release allocate disk structure */
6926 __free_imsm_disk(disk_cfg
);
6929 return check_degraded
;
6933 static int apply_reshape_migration_update(struct imsm_update_reshape_migration
*u
,
6934 struct intel_super
*super
,
6937 struct intel_dev
*id
;
6938 void **tofree
= NULL
;
6941 dprintf("apply_reshape_migration_update()\n");
6942 if ((u
->subdev
< 0) ||
6944 dprintf("imsm: Error: Wrong subdev: %i\n", u
->subdev
);
6947 if ((space_list
== NULL
) || (*space_list
== NULL
)) {
6948 dprintf("imsm: Error: Memory is not allocated\n");
6952 for (id
= super
->devlist
; id
; id
= id
->next
) {
6953 if (id
->index
== (unsigned)u
->subdev
) {
6954 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->subdev
);
6955 struct imsm_map
*map
;
6956 struct imsm_dev
*new_dev
=
6957 (struct imsm_dev
*)*space_list
;
6958 struct imsm_map
*migr_map
= get_imsm_map(dev
, 1);
6960 struct dl
*new_disk
;
6962 if (new_dev
== NULL
)
6964 *space_list
= **space_list
;
6965 memcpy(new_dev
, dev
, sizeof_imsm_dev(dev
, 0));
6966 map
= get_imsm_map(new_dev
, 0);
6968 dprintf("imsm: Error: migration in progress");
6972 to_state
= map
->map_state
;
6973 if ((u
->new_level
== 5) && (map
->raid_level
== 0)) {
6975 /* this should not happen */
6976 if (u
->new_disks
[0] < 0) {
6977 map
->failed_disk_num
=
6978 map
->num_members
- 1;
6979 to_state
= IMSM_T_STATE_DEGRADED
;
6981 to_state
= IMSM_T_STATE_NORMAL
;
6983 migrate(new_dev
, super
, to_state
, MIGR_GEN_MIGR
);
6984 if (u
->new_level
> -1)
6985 map
->raid_level
= u
->new_level
;
6986 migr_map
= get_imsm_map(new_dev
, 1);
6987 if ((u
->new_level
== 5) &&
6988 (migr_map
->raid_level
== 0)) {
6989 int ord
= map
->num_members
- 1;
6990 migr_map
->num_members
--;
6991 if (u
->new_disks
[0] < 0)
6992 ord
|= IMSM_ORD_REBUILD
;
6993 set_imsm_ord_tbl_ent(map
,
6994 map
->num_members
- 1,
6998 tofree
= (void **)dev
;
7000 /* update chunk size
7002 if (u
->new_chunksize
> 0)
7003 map
->blocks_per_strip
=
7004 __cpu_to_le16(u
->new_chunksize
* 2);
7008 if ((u
->new_level
!= 5) ||
7009 (migr_map
->raid_level
!= 0) ||
7010 (migr_map
->raid_level
== map
->raid_level
))
7013 if (u
->new_disks
[0] >= 0) {
7016 new_disk
= get_disk_super(super
,
7017 major(u
->new_disks
[0]),
7018 minor(u
->new_disks
[0]));
7019 dprintf("imsm: new disk for reshape is: %i:%i "
7020 "(%p, index = %i)\n",
7021 major(u
->new_disks
[0]),
7022 minor(u
->new_disks
[0]),
7023 new_disk
, new_disk
->index
);
7024 if (new_disk
== NULL
)
7025 goto error_disk_add
;
7027 new_disk
->index
= map
->num_members
- 1;
7028 /* slot to fill in autolayout
7030 new_disk
->raiddisk
= new_disk
->index
;
7031 new_disk
->disk
.status
|= CONFIGURED_DISK
;
7032 new_disk
->disk
.status
&= ~SPARE_DISK
;
7034 goto error_disk_add
;
7037 *tofree
= *space_list
;
7038 /* calculate new size
7040 imsm_set_array_size(new_dev
);
7047 *space_list
= tofree
;
7051 dprintf("Error: imsm: Cannot find disk.\n");
7055 static int apply_update_activate_spare(struct imsm_update_activate_spare
*u
,
7056 struct intel_super
*super
,
7057 struct active_array
*active_array
)
7059 struct imsm_super
*mpb
= super
->anchor
;
7060 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->array
);
7061 struct imsm_map
*map
= get_imsm_map(dev
, 0);
7062 struct imsm_map
*migr_map
;
7063 struct active_array
*a
;
7064 struct imsm_disk
*disk
;
7071 int second_map_created
= 0;
7073 for (; u
; u
= u
->next
) {
7074 victim
= get_imsm_disk_idx(dev
, u
->slot
, -1);
7079 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
7084 fprintf(stderr
, "error: imsm_activate_spare passed "
7085 "an unknown disk (index: %d)\n",
7090 /* count failures (excluding rebuilds and the victim)
7091 * to determine map[0] state
7094 for (i
= 0; i
< map
->num_members
; i
++) {
7097 disk
= get_imsm_disk(super
,
7098 get_imsm_disk_idx(dev
, i
, -1));
7099 if (!disk
|| is_failed(disk
))
7103 /* adding a pristine spare, assign a new index */
7104 if (dl
->index
< 0) {
7105 dl
->index
= super
->anchor
->num_disks
;
7106 super
->anchor
->num_disks
++;
7109 disk
->status
|= CONFIGURED_DISK
;
7110 disk
->status
&= ~SPARE_DISK
;
7113 to_state
= imsm_check_degraded(super
, dev
, failed
);
7114 if (!second_map_created
) {
7115 second_map_created
= 1;
7116 map
->map_state
= IMSM_T_STATE_DEGRADED
;
7117 migrate(dev
, super
, to_state
, MIGR_REBUILD
);
7119 map
->map_state
= to_state
;
7120 migr_map
= get_imsm_map(dev
, 1);
7121 set_imsm_ord_tbl_ent(map
, u
->slot
, dl
->index
);
7122 set_imsm_ord_tbl_ent(migr_map
, u
->slot
,
7123 dl
->index
| IMSM_ORD_REBUILD
);
7125 /* update the family_num to mark a new container
7126 * generation, being careful to record the existing
7127 * family_num in orig_family_num to clean up after
7128 * earlier mdadm versions that neglected to set it.
7130 if (mpb
->orig_family_num
== 0)
7131 mpb
->orig_family_num
= mpb
->family_num
;
7132 mpb
->family_num
+= super
->random
;
7134 /* count arrays using the victim in the metadata */
7136 for (a
= active_array
; a
; a
= a
->next
) {
7137 dev
= get_imsm_dev(super
, a
->info
.container_member
);
7138 map
= get_imsm_map(dev
, 0);
7140 if (get_imsm_disk_slot(map
, victim
) >= 0)
7144 /* delete the victim if it is no longer being
7150 /* We know that 'manager' isn't touching anything,
7151 * so it is safe to delete
7153 for (dlp
= &super
->disks
; *dlp
; dlp
= &(*dlp
)->next
)
7154 if ((*dlp
)->index
== victim
)
7157 /* victim may be on the missing list */
7159 for (dlp
= &super
->missing
; *dlp
;
7160 dlp
= &(*dlp
)->next
)
7161 if ((*dlp
)->index
== victim
)
7163 imsm_delete(super
, dlp
, victim
);
7170 static int apply_reshape_container_disks_update(struct imsm_update_reshape
*u
,
7171 struct intel_super
*super
,
7174 struct dl
*new_disk
;
7175 struct intel_dev
*id
;
7177 int delta_disks
= u
->new_raid_disks
- u
->old_raid_disks
;
7178 int disk_count
= u
->old_raid_disks
;
7179 void **tofree
= NULL
;
7180 int devices_to_reshape
= 1;
7181 struct imsm_super
*mpb
= super
->anchor
;
7183 unsigned int dev_id
;
7185 dprintf("imsm: apply_reshape_container_disks_update()\n");
7187 /* enable spares to use in array */
7188 for (i
= 0; i
< delta_disks
; i
++) {
7189 new_disk
= get_disk_super(super
,
7190 major(u
->new_disks
[i
]),
7191 minor(u
->new_disks
[i
]));
7192 dprintf("imsm: new disk for reshape is: %i:%i "
7193 "(%p, index = %i)\n",
7194 major(u
->new_disks
[i
]), minor(u
->new_disks
[i
]),
7195 new_disk
, new_disk
->index
);
7196 if ((new_disk
== NULL
) ||
7197 ((new_disk
->index
>= 0) &&
7198 (new_disk
->index
< u
->old_raid_disks
)))
7199 goto update_reshape_exit
;
7200 new_disk
->index
= disk_count
++;
7201 /* slot to fill in autolayout
7203 new_disk
->raiddisk
= new_disk
->index
;
7204 new_disk
->disk
.status
|=
7206 new_disk
->disk
.status
&= ~SPARE_DISK
;
7209 dprintf("imsm: volume set mpb->num_raid_devs = %i\n",
7210 mpb
->num_raid_devs
);
7211 /* manage changes in volume
7213 for (dev_id
= 0; dev_id
< mpb
->num_raid_devs
; dev_id
++) {
7214 void **sp
= *space_list
;
7215 struct imsm_dev
*newdev
;
7216 struct imsm_map
*newmap
, *oldmap
;
7218 for (id
= super
->devlist
; id
; id
= id
->next
) {
7219 if (id
->index
== dev_id
)
7228 /* Copy the dev, but not (all of) the map */
7229 memcpy(newdev
, id
->dev
, sizeof(*newdev
));
7230 oldmap
= get_imsm_map(id
->dev
, 0);
7231 newmap
= get_imsm_map(newdev
, 0);
7232 /* Copy the current map */
7233 memcpy(newmap
, oldmap
, sizeof_imsm_map(oldmap
));
7234 /* update one device only
7236 if (devices_to_reshape
) {
7237 dprintf("imsm: modifying subdev: %i\n",
7239 devices_to_reshape
--;
7240 newdev
->vol
.migr_state
= 1;
7241 newdev
->vol
.curr_migr_unit
= 0;
7242 set_migr_type(newdev
, MIGR_GEN_MIGR
);
7243 newmap
->num_members
= u
->new_raid_disks
;
7244 for (i
= 0; i
< delta_disks
; i
++) {
7245 set_imsm_ord_tbl_ent(newmap
,
7246 u
->old_raid_disks
+ i
,
7247 u
->old_raid_disks
+ i
);
7249 /* New map is correct, now need to save old map
7251 newmap
= get_imsm_map(newdev
, 1);
7252 memcpy(newmap
, oldmap
, sizeof_imsm_map(oldmap
));
7254 imsm_set_array_size(newdev
);
7257 sp
= (void **)id
->dev
;
7262 /* Clear migration record */
7263 memset(super
->migr_rec
, 0, sizeof(struct migr_record
));
7266 *space_list
= tofree
;
7269 update_reshape_exit
:
7274 static int apply_takeover_update(struct imsm_update_takeover
*u
,
7275 struct intel_super
*super
,
7278 struct imsm_dev
*dev
= NULL
;
7279 struct intel_dev
*dv
;
7280 struct imsm_dev
*dev_new
;
7281 struct imsm_map
*map
;
7285 for (dv
= super
->devlist
; dv
; dv
= dv
->next
)
7286 if (dv
->index
== (unsigned int)u
->subarray
) {
7294 map
= get_imsm_map(dev
, 0);
7296 if (u
->direction
== R10_TO_R0
) {
7297 /* Number of failed disks must be half of initial disk number */
7298 if (imsm_count_failed(super
, dev
) != (map
->num_members
/ 2))
7301 /* iterate through devices to mark removed disks as spare */
7302 for (dm
= super
->disks
; dm
; dm
= dm
->next
) {
7303 if (dm
->disk
.status
& FAILED_DISK
) {
7304 int idx
= dm
->index
;
7305 /* update indexes on the disk list */
7306 /* FIXME this loop-with-the-loop looks wrong, I'm not convinced
7307 the index values will end up being correct.... NB */
7308 for (du
= super
->disks
; du
; du
= du
->next
)
7309 if (du
->index
> idx
)
7311 /* mark as spare disk */
7316 map
->num_members
= map
->num_members
/ 2;
7317 map
->map_state
= IMSM_T_STATE_NORMAL
;
7318 map
->num_domains
= 1;
7319 map
->raid_level
= 0;
7320 map
->failed_disk_num
= -1;
7323 if (u
->direction
== R0_TO_R10
) {
7325 /* update slots in current disk list */
7326 for (dm
= super
->disks
; dm
; dm
= dm
->next
) {
7330 /* create new *missing* disks */
7331 for (i
= 0; i
< map
->num_members
; i
++) {
7332 space
= *space_list
;
7335 *space_list
= *space
;
7337 memcpy(du
, super
->disks
, sizeof(*du
));
7341 du
->index
= (i
* 2) + 1;
7342 sprintf((char *)du
->disk
.serial
,
7343 " MISSING_%d", du
->index
);
7344 sprintf((char *)du
->serial
,
7345 "MISSING_%d", du
->index
);
7346 du
->next
= super
->missing
;
7347 super
->missing
= du
;
7349 /* create new dev and map */
7350 space
= *space_list
;
7353 *space_list
= *space
;
7354 dev_new
= (void *)space
;
7355 memcpy(dev_new
, dev
, sizeof(*dev
));
7356 /* update new map */
7357 map
= get_imsm_map(dev_new
, 0);
7358 map
->num_members
= map
->num_members
* 2;
7359 map
->map_state
= IMSM_T_STATE_DEGRADED
;
7360 map
->num_domains
= 2;
7361 map
->raid_level
= 1;
7362 /* replace dev<->dev_new */
7365 /* update disk order table */
7366 for (du
= super
->disks
; du
; du
= du
->next
)
7368 set_imsm_ord_tbl_ent(map
, du
->index
, du
->index
);
7369 for (du
= super
->missing
; du
; du
= du
->next
)
7370 if (du
->index
>= 0) {
7371 set_imsm_ord_tbl_ent(map
, du
->index
, du
->index
);
7372 mark_missing(dv
->dev
, &du
->disk
, du
->index
);
7378 static void imsm_process_update(struct supertype
*st
,
7379 struct metadata_update
*update
)
7382 * crack open the metadata_update envelope to find the update record
7383 * update can be one of:
7384 * update_reshape_container_disks - all the arrays in the container
7385 * are being reshaped to have more devices. We need to mark
7386 * the arrays for general migration and convert selected spares
7387 * into active devices.
7388 * update_activate_spare - a spare device has replaced a failed
7389 * device in an array, update the disk_ord_tbl. If this disk is
7390 * present in all member arrays then also clear the SPARE_DISK
7392 * update_create_array
7394 * update_rename_array
7395 * update_add_remove_disk
7397 struct intel_super
*super
= st
->sb
;
7398 struct imsm_super
*mpb
;
7399 enum imsm_update_type type
= *(enum imsm_update_type
*) update
->buf
;
7401 /* update requires a larger buf but the allocation failed */
7402 if (super
->next_len
&& !super
->next_buf
) {
7403 super
->next_len
= 0;
7407 if (super
->next_buf
) {
7408 memcpy(super
->next_buf
, super
->buf
, super
->len
);
7410 super
->len
= super
->next_len
;
7411 super
->buf
= super
->next_buf
;
7413 super
->next_len
= 0;
7414 super
->next_buf
= NULL
;
7417 mpb
= super
->anchor
;
7420 case update_general_migration_checkpoint
: {
7421 struct intel_dev
*id
;
7422 struct imsm_update_general_migration_checkpoint
*u
=
7423 (void *)update
->buf
;
7425 dprintf("imsm: process_update() "
7426 "for update_general_migration_checkpoint called\n");
7428 /* find device under general migration */
7429 for (id
= super
->devlist
; id
; id
= id
->next
) {
7430 if (is_gen_migration(id
->dev
)) {
7431 id
->dev
->vol
.curr_migr_unit
=
7432 __cpu_to_le32(u
->curr_migr_unit
);
7433 super
->updates_pending
++;
7438 case update_takeover
: {
7439 struct imsm_update_takeover
*u
= (void *)update
->buf
;
7440 if (apply_takeover_update(u
, super
, &update
->space_list
)) {
7441 imsm_update_version_info(super
);
7442 super
->updates_pending
++;
7447 case update_reshape_container_disks
: {
7448 struct imsm_update_reshape
*u
= (void *)update
->buf
;
7449 if (apply_reshape_container_disks_update(
7450 u
, super
, &update
->space_list
))
7451 super
->updates_pending
++;
7454 case update_reshape_migration
: {
7455 struct imsm_update_reshape_migration
*u
= (void *)update
->buf
;
7456 if (apply_reshape_migration_update(
7457 u
, super
, &update
->space_list
))
7458 super
->updates_pending
++;
7461 case update_activate_spare
: {
7462 struct imsm_update_activate_spare
*u
= (void *) update
->buf
;
7463 if (apply_update_activate_spare(u
, super
, st
->arrays
))
7464 super
->updates_pending
++;
7467 case update_create_array
: {
7468 /* someone wants to create a new array, we need to be aware of
7469 * a few races/collisions:
7470 * 1/ 'Create' called by two separate instances of mdadm
7471 * 2/ 'Create' versus 'activate_spare': mdadm has chosen
7472 * devices that have since been assimilated via
7474 * In the event this update can not be carried out mdadm will
7475 * (FIX ME) notice that its update did not take hold.
7477 struct imsm_update_create_array
*u
= (void *) update
->buf
;
7478 struct intel_dev
*dv
;
7479 struct imsm_dev
*dev
;
7480 struct imsm_map
*map
, *new_map
;
7481 unsigned long long start
, end
;
7482 unsigned long long new_start
, new_end
;
7484 struct disk_info
*inf
;
7487 /* handle racing creates: first come first serve */
7488 if (u
->dev_idx
< mpb
->num_raid_devs
) {
7489 dprintf("%s: subarray %d already defined\n",
7490 __func__
, u
->dev_idx
);
7494 /* check update is next in sequence */
7495 if (u
->dev_idx
!= mpb
->num_raid_devs
) {
7496 dprintf("%s: can not create array %d expected index %d\n",
7497 __func__
, u
->dev_idx
, mpb
->num_raid_devs
);
7501 new_map
= get_imsm_map(&u
->dev
, 0);
7502 new_start
= __le32_to_cpu(new_map
->pba_of_lba0
);
7503 new_end
= new_start
+ __le32_to_cpu(new_map
->blocks_per_member
);
7504 inf
= get_disk_info(u
);
7506 /* handle activate_spare versus create race:
7507 * check to make sure that overlapping arrays do not include
7510 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
7511 dev
= get_imsm_dev(super
, i
);
7512 map
= get_imsm_map(dev
, 0);
7513 start
= __le32_to_cpu(map
->pba_of_lba0
);
7514 end
= start
+ __le32_to_cpu(map
->blocks_per_member
);
7515 if ((new_start
>= start
&& new_start
<= end
) ||
7516 (start
>= new_start
&& start
<= new_end
))
7521 if (disks_overlap(super
, i
, u
)) {
7522 dprintf("%s: arrays overlap\n", __func__
);
7527 /* check that prepare update was successful */
7528 if (!update
->space
) {
7529 dprintf("%s: prepare update failed\n", __func__
);
7533 /* check that all disks are still active before committing
7534 * changes. FIXME: could we instead handle this by creating a
7535 * degraded array? That's probably not what the user expects,
7536 * so better to drop this update on the floor.
7538 for (i
= 0; i
< new_map
->num_members
; i
++) {
7539 dl
= serial_to_dl(inf
[i
].serial
, super
);
7541 dprintf("%s: disk disappeared\n", __func__
);
7546 super
->updates_pending
++;
7548 /* convert spares to members and fixup ord_tbl */
7549 for (i
= 0; i
< new_map
->num_members
; i
++) {
7550 dl
= serial_to_dl(inf
[i
].serial
, super
);
7551 if (dl
->index
== -1) {
7552 dl
->index
= mpb
->num_disks
;
7554 dl
->disk
.status
|= CONFIGURED_DISK
;
7555 dl
->disk
.status
&= ~SPARE_DISK
;
7557 set_imsm_ord_tbl_ent(new_map
, i
, dl
->index
);
7562 update
->space
= NULL
;
7563 imsm_copy_dev(dev
, &u
->dev
);
7564 dv
->index
= u
->dev_idx
;
7565 dv
->next
= super
->devlist
;
7566 super
->devlist
= dv
;
7567 mpb
->num_raid_devs
++;
7569 imsm_update_version_info(super
);
7572 /* mdmon knows how to release update->space, but not
7573 * ((struct intel_dev *) update->space)->dev
7575 if (update
->space
) {
7581 case update_kill_array
: {
7582 struct imsm_update_kill_array
*u
= (void *) update
->buf
;
7583 int victim
= u
->dev_idx
;
7584 struct active_array
*a
;
7585 struct intel_dev
**dp
;
7586 struct imsm_dev
*dev
;
7588 /* sanity check that we are not affecting the uuid of
7589 * active arrays, or deleting an active array
7591 * FIXME when immutable ids are available, but note that
7592 * we'll also need to fixup the invalidated/active
7593 * subarray indexes in mdstat
7595 for (a
= st
->arrays
; a
; a
= a
->next
)
7596 if (a
->info
.container_member
>= victim
)
7598 /* by definition if mdmon is running at least one array
7599 * is active in the container, so checking
7600 * mpb->num_raid_devs is just extra paranoia
7602 dev
= get_imsm_dev(super
, victim
);
7603 if (a
|| !dev
|| mpb
->num_raid_devs
== 1) {
7604 dprintf("failed to delete subarray-%d\n", victim
);
7608 for (dp
= &super
->devlist
; *dp
;)
7609 if ((*dp
)->index
== (unsigned)super
->current_vol
) {
7612 if ((*dp
)->index
> (unsigned)victim
)
7616 mpb
->num_raid_devs
--;
7617 super
->updates_pending
++;
7620 case update_rename_array
: {
7621 struct imsm_update_rename_array
*u
= (void *) update
->buf
;
7622 char name
[MAX_RAID_SERIAL_LEN
+1];
7623 int target
= u
->dev_idx
;
7624 struct active_array
*a
;
7625 struct imsm_dev
*dev
;
7627 /* sanity check that we are not affecting the uuid of
7630 snprintf(name
, MAX_RAID_SERIAL_LEN
, "%s", (char *) u
->name
);
7631 name
[MAX_RAID_SERIAL_LEN
] = '\0';
7632 for (a
= st
->arrays
; a
; a
= a
->next
)
7633 if (a
->info
.container_member
== target
)
7635 dev
= get_imsm_dev(super
, u
->dev_idx
);
7636 if (a
|| !dev
|| !check_name(super
, name
, 1)) {
7637 dprintf("failed to rename subarray-%d\n", target
);
7641 snprintf((char *) dev
->volume
, MAX_RAID_SERIAL_LEN
, "%s", name
);
7642 super
->updates_pending
++;
7645 case update_add_remove_disk
: {
7646 /* we may be able to repair some arrays if disks are
7647 * being added, check teh status of add_remove_disk
7648 * if discs has been added.
7650 if (add_remove_disk_update(super
)) {
7651 struct active_array
*a
;
7653 super
->updates_pending
++;
7654 for (a
= st
->arrays
; a
; a
= a
->next
)
7655 a
->check_degraded
= 1;
7660 fprintf(stderr
, "error: unsuported process update type:"
7661 "(type: %d)\n", type
);
7665 static struct mdinfo
*get_spares_for_grow(struct supertype
*st
);
7667 static void imsm_prepare_update(struct supertype
*st
,
7668 struct metadata_update
*update
)
7671 * Allocate space to hold new disk entries, raid-device entries or a new
7672 * mpb if necessary. The manager synchronously waits for updates to
7673 * complete in the monitor, so new mpb buffers allocated here can be
7674 * integrated by the monitor thread without worrying about live pointers
7675 * in the manager thread.
7677 enum imsm_update_type type
= *(enum imsm_update_type
*) update
->buf
;
7678 struct intel_super
*super
= st
->sb
;
7679 struct imsm_super
*mpb
= super
->anchor
;
7684 case update_general_migration_checkpoint
:
7685 dprintf("imsm: prepare_update() "
7686 "for update_general_migration_checkpoint called\n");
7688 case update_takeover
: {
7689 struct imsm_update_takeover
*u
= (void *)update
->buf
;
7690 if (u
->direction
== R0_TO_R10
) {
7691 void **tail
= (void **)&update
->space_list
;
7692 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->subarray
);
7693 struct imsm_map
*map
= get_imsm_map(dev
, 0);
7694 int num_members
= map
->num_members
;
7698 /* allocate memory for added disks */
7699 for (i
= 0; i
< num_members
; i
++) {
7700 size
= sizeof(struct dl
);
7701 space
= malloc(size
);
7710 /* allocate memory for new device */
7711 size
= sizeof_imsm_dev(super
->devlist
->dev
, 0) +
7712 (num_members
* sizeof(__u32
));
7713 space
= malloc(size
);
7722 len
= disks_to_mpb_size(num_members
* 2);
7724 /* if allocation didn't success, free buffer */
7725 while (update
->space_list
) {
7726 void **sp
= update
->space_list
;
7727 update
->space_list
= *sp
;
7735 case update_reshape_container_disks
: {
7736 /* Every raid device in the container is about to
7737 * gain some more devices, and we will enter a
7739 * So each 'imsm_map' will be bigger, and the imsm_vol
7740 * will now hold 2 of them.
7741 * Thus we need new 'struct imsm_dev' allocations sized
7742 * as sizeof_imsm_dev but with more devices in both maps.
7744 struct imsm_update_reshape
*u
= (void *)update
->buf
;
7745 struct intel_dev
*dl
;
7746 void **space_tail
= (void**)&update
->space_list
;
7748 dprintf("imsm: imsm_prepare_update() for update_reshape\n");
7750 for (dl
= super
->devlist
; dl
; dl
= dl
->next
) {
7751 int size
= sizeof_imsm_dev(dl
->dev
, 1);
7753 if (u
->new_raid_disks
> u
->old_raid_disks
)
7754 size
+= sizeof(__u32
)*2*
7755 (u
->new_raid_disks
- u
->old_raid_disks
);
7764 len
= disks_to_mpb_size(u
->new_raid_disks
);
7765 dprintf("New anchor length is %llu\n", (unsigned long long)len
);
7768 case update_reshape_migration
: {
7769 /* for migration level 0->5 we need to add disks
7770 * so the same as for container operation we will copy
7771 * device to the bigger location.
7772 * in memory prepared device and new disk area are prepared
7773 * for usage in process update
7775 struct imsm_update_reshape_migration
*u
= (void *)update
->buf
;
7776 struct intel_dev
*id
;
7777 void **space_tail
= (void **)&update
->space_list
;
7780 int current_level
= -1;
7782 dprintf("imsm: imsm_prepare_update() for update_reshape\n");
7784 /* add space for bigger array in update
7786 for (id
= super
->devlist
; id
; id
= id
->next
) {
7787 if (id
->index
== (unsigned)u
->subdev
) {
7788 size
= sizeof_imsm_dev(id
->dev
, 1);
7789 if (u
->new_raid_disks
> u
->old_raid_disks
)
7790 size
+= sizeof(__u32
)*2*
7791 (u
->new_raid_disks
- u
->old_raid_disks
);
7801 if (update
->space_list
== NULL
)
7804 /* add space for disk in update
7806 size
= sizeof(struct dl
);
7809 free(update
->space_list
);
7810 update
->space_list
= NULL
;
7817 /* add spare device to update
7819 for (id
= super
->devlist
; id
; id
= id
->next
)
7820 if (id
->index
== (unsigned)u
->subdev
) {
7821 struct imsm_dev
*dev
;
7822 struct imsm_map
*map
;
7824 dev
= get_imsm_dev(super
, u
->subdev
);
7825 map
= get_imsm_map(dev
, 0);
7826 current_level
= map
->raid_level
;
7829 if ((u
->new_level
== 5) && (u
->new_level
!= current_level
)) {
7830 struct mdinfo
*spares
;
7832 spares
= get_spares_for_grow(st
);
7840 makedev(dev
->disk
.major
,
7842 dl
= get_disk_super(super
,
7845 dl
->index
= u
->old_raid_disks
;
7851 len
= disks_to_mpb_size(u
->new_raid_disks
);
7852 dprintf("New anchor length is %llu\n", (unsigned long long)len
);
7855 case update_create_array
: {
7856 struct imsm_update_create_array
*u
= (void *) update
->buf
;
7857 struct intel_dev
*dv
;
7858 struct imsm_dev
*dev
= &u
->dev
;
7859 struct imsm_map
*map
= get_imsm_map(dev
, 0);
7861 struct disk_info
*inf
;
7865 inf
= get_disk_info(u
);
7866 len
= sizeof_imsm_dev(dev
, 1);
7867 /* allocate a new super->devlist entry */
7868 dv
= malloc(sizeof(*dv
));
7870 dv
->dev
= malloc(len
);
7875 update
->space
= NULL
;
7879 /* count how many spares will be converted to members */
7880 for (i
= 0; i
< map
->num_members
; i
++) {
7881 dl
= serial_to_dl(inf
[i
].serial
, super
);
7883 /* hmm maybe it failed?, nothing we can do about
7888 if (count_memberships(dl
, super
) == 0)
7891 len
+= activate
* sizeof(struct imsm_disk
);
7898 /* check if we need a larger metadata buffer */
7899 if (super
->next_buf
)
7900 buf_len
= super
->next_len
;
7902 buf_len
= super
->len
;
7904 if (__le32_to_cpu(mpb
->mpb_size
) + len
> buf_len
) {
7905 /* ok we need a larger buf than what is currently allocated
7906 * if this allocation fails process_update will notice that
7907 * ->next_len is set and ->next_buf is NULL
7909 buf_len
= ROUND_UP(__le32_to_cpu(mpb
->mpb_size
) + len
, 512);
7910 if (super
->next_buf
)
7911 free(super
->next_buf
);
7913 super
->next_len
= buf_len
;
7914 if (posix_memalign(&super
->next_buf
, 512, buf_len
) == 0)
7915 memset(super
->next_buf
, 0, buf_len
);
7917 super
->next_buf
= NULL
;
7921 /* must be called while manager is quiesced */
7922 static void imsm_delete(struct intel_super
*super
, struct dl
**dlp
, unsigned index
)
7924 struct imsm_super
*mpb
= super
->anchor
;
7926 struct imsm_dev
*dev
;
7927 struct imsm_map
*map
;
7928 int i
, j
, num_members
;
7931 dprintf("%s: deleting device[%d] from imsm_super\n",
7934 /* shift all indexes down one */
7935 for (iter
= super
->disks
; iter
; iter
= iter
->next
)
7936 if (iter
->index
> (int)index
)
7938 for (iter
= super
->missing
; iter
; iter
= iter
->next
)
7939 if (iter
->index
> (int)index
)
7942 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
7943 dev
= get_imsm_dev(super
, i
);
7944 map
= get_imsm_map(dev
, 0);
7945 num_members
= map
->num_members
;
7946 for (j
= 0; j
< num_members
; j
++) {
7947 /* update ord entries being careful not to propagate
7948 * ord-flags to the first map
7950 ord
= get_imsm_ord_tbl_ent(dev
, j
, -1);
7952 if (ord_to_idx(ord
) <= index
)
7955 map
= get_imsm_map(dev
, 0);
7956 set_imsm_ord_tbl_ent(map
, j
, ord_to_idx(ord
- 1));
7957 map
= get_imsm_map(dev
, 1);
7959 set_imsm_ord_tbl_ent(map
, j
, ord
- 1);
7964 super
->updates_pending
++;
7966 struct dl
*dl
= *dlp
;
7968 *dlp
= (*dlp
)->next
;
7969 __free_imsm_disk(dl
);
7972 #endif /* MDASSEMBLE */
7973 /*******************************************************************************
7974 * Function: open_backup_targets
7975 * Description: Function opens file descriptors for all devices given in
7978 * info : general array info
7979 * raid_disks : number of disks
7980 * raid_fds : table of device's file descriptors
7984 ******************************************************************************/
7985 int open_backup_targets(struct mdinfo
*info
, int raid_disks
, int *raid_fds
)
7989 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
7992 if (sd
->disk
.state
& (1<<MD_DISK_FAULTY
)) {
7993 dprintf("disk is faulty!!\n");
7997 if ((sd
->disk
.raid_disk
>= raid_disks
) ||
7998 (sd
->disk
.raid_disk
< 0))
8001 dn
= map_dev(sd
->disk
.major
,
8003 raid_fds
[sd
->disk
.raid_disk
] = dev_open(dn
, O_RDWR
);
8004 if (raid_fds
[sd
->disk
.raid_disk
] < 0) {
8005 fprintf(stderr
, "cannot open component\n");
8013 /*******************************************************************************
8014 * Function: init_migr_record_imsm
8015 * Description: Function inits imsm migration record
8017 * super : imsm internal array info
8018 * dev : device under migration
8019 * info : general array info to find the smallest device
8022 ******************************************************************************/
8023 void init_migr_record_imsm(struct supertype
*st
, struct imsm_dev
*dev
,
8024 struct mdinfo
*info
)
8026 struct intel_super
*super
= st
->sb
;
8027 struct migr_record
*migr_rec
= super
->migr_rec
;
8029 unsigned long long dsize
, dev_sectors
;
8030 long long unsigned min_dev_sectors
= -1LLU;
8034 struct imsm_map
*map_dest
= get_imsm_map(dev
, 0);
8035 struct imsm_map
*map_src
= get_imsm_map(dev
, 1);
8036 unsigned long long num_migr_units
;
8037 unsigned long long array_blocks
;
8039 memset(migr_rec
, 0, sizeof(struct migr_record
));
8040 migr_rec
->family_num
= __cpu_to_le32(super
->anchor
->family_num
);
8042 /* only ascending reshape supported now */
8043 migr_rec
->ascending_migr
= __cpu_to_le32(1);
8045 migr_rec
->dest_depth_per_unit
= GEN_MIGR_AREA_SIZE
/
8046 max(map_dest
->blocks_per_strip
, map_src
->blocks_per_strip
);
8047 migr_rec
->dest_depth_per_unit
*= map_dest
->blocks_per_strip
;
8048 new_data_disks
= imsm_num_data_members(dev
, 0);
8049 migr_rec
->blocks_per_unit
=
8050 __cpu_to_le32(migr_rec
->dest_depth_per_unit
* new_data_disks
);
8051 migr_rec
->dest_depth_per_unit
=
8052 __cpu_to_le32(migr_rec
->dest_depth_per_unit
);
8053 array_blocks
= info
->component_size
* new_data_disks
;
8055 array_blocks
/ __le32_to_cpu(migr_rec
->blocks_per_unit
);
8057 if (array_blocks
% __le32_to_cpu(migr_rec
->blocks_per_unit
))
8059 migr_rec
->num_migr_units
= __cpu_to_le32(num_migr_units
);
8061 migr_rec
->post_migr_vol_cap
= dev
->size_low
;
8062 migr_rec
->post_migr_vol_cap_hi
= dev
->size_high
;
8065 /* Find the smallest dev */
8066 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
8067 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
8068 fd
= dev_open(nm
, O_RDONLY
);
8071 get_dev_size(fd
, NULL
, &dsize
);
8072 dev_sectors
= dsize
/ 512;
8073 if (dev_sectors
< min_dev_sectors
)
8074 min_dev_sectors
= dev_sectors
;
8077 migr_rec
->ckpt_area_pba
= __cpu_to_le32(min_dev_sectors
-
8078 RAID_DISK_RESERVED_BLOCKS_IMSM_HI
);
8080 write_imsm_migr_rec(st
);
8085 /*******************************************************************************
8086 * Function: save_backup_imsm
8087 * Description: Function saves critical data stripes to Migration Copy Area
8088 * and updates the current migration unit status.
8089 * Use restore_stripes() to form a destination stripe,
8090 * and to write it to the Copy Area.
8092 * st : supertype information
8093 * dev : imsm device that backup is saved for
8094 * info : general array info
8095 * buf : input buffer
8096 * length : length of data to backup (blocks_per_unit)
8100 ******************************************************************************/
8101 int save_backup_imsm(struct supertype
*st
,
8102 struct imsm_dev
*dev
,
8103 struct mdinfo
*info
,
8108 struct intel_super
*super
= st
->sb
;
8109 unsigned long long *target_offsets
= NULL
;
8110 int *targets
= NULL
;
8112 struct imsm_map
*map_dest
= get_imsm_map(dev
, 0);
8113 int new_disks
= map_dest
->num_members
;
8114 int dest_layout
= 0;
8116 unsigned long long start
;
8117 int data_disks
= imsm_num_data_members(dev
, 0);
8119 targets
= malloc(new_disks
* sizeof(int));
8123 for (i
= 0; i
< new_disks
; i
++)
8126 target_offsets
= malloc(new_disks
* sizeof(unsigned long long));
8127 if (!target_offsets
)
8130 start
= info
->reshape_progress
* 512;
8131 for (i
= 0; i
< new_disks
; i
++) {
8132 target_offsets
[i
] = (unsigned long long)
8133 __le32_to_cpu(super
->migr_rec
->ckpt_area_pba
) * 512;
8134 /* move back copy area adderss, it will be moved forward
8135 * in restore_stripes() using start input variable
8137 target_offsets
[i
] -= start
/data_disks
;
8140 if (open_backup_targets(info
, new_disks
, targets
))
8143 dest_layout
= imsm_level_to_layout(map_dest
->raid_level
);
8144 dest_chunk
= __le16_to_cpu(map_dest
->blocks_per_strip
) * 512;
8146 if (restore_stripes(targets
, /* list of dest devices */
8147 target_offsets
, /* migration record offsets */
8150 map_dest
->raid_level
,
8152 -1, /* source backup file descriptor */
8153 0, /* input buf offset
8154 * always 0 buf is already offseted */
8158 fprintf(stderr
, Name
": Error restoring stripes\n");
8166 for (i
= 0; i
< new_disks
; i
++)
8167 if (targets
[i
] >= 0)
8171 free(target_offsets
);
8176 /*******************************************************************************
8177 * Function: save_checkpoint_imsm
8178 * Description: Function called for current unit status update
8179 * in the migration record. It writes it to disk.
8181 * super : imsm internal array info
8182 * info : general array info
8186 * 2: failure, means no valid migration record
8187 * / no general migration in progress /
8188 ******************************************************************************/
8189 int save_checkpoint_imsm(struct supertype
*st
, struct mdinfo
*info
, int state
)
8191 struct intel_super
*super
= st
->sb
;
8192 unsigned long long blocks_per_unit
;
8193 unsigned long long curr_migr_unit
;
8195 if (load_imsm_migr_rec(super
, info
) != 0) {
8196 dprintf("imsm: ERROR: Cannot read migration record "
8197 "for checkpoint save.\n");
8201 blocks_per_unit
= __le32_to_cpu(super
->migr_rec
->blocks_per_unit
);
8202 if (blocks_per_unit
== 0) {
8203 dprintf("imsm: no migration in progress.\n");
8206 curr_migr_unit
= info
->reshape_progress
/ blocks_per_unit
;
8207 /* check if array is alligned to copy area
8208 * if it is not alligned, add one to current migration unit value
8209 * this can happend on array reshape finish only
8211 if (info
->reshape_progress
% blocks_per_unit
)
8214 super
->migr_rec
->curr_migr_unit
=
8215 __cpu_to_le32(curr_migr_unit
);
8216 super
->migr_rec
->rec_status
= __cpu_to_le32(state
);
8217 super
->migr_rec
->dest_1st_member_lba
=
8218 __cpu_to_le32(curr_migr_unit
*
8219 __le32_to_cpu(super
->migr_rec
->dest_depth_per_unit
));
8220 if (write_imsm_migr_rec(st
) < 0) {
8221 dprintf("imsm: Cannot write migration record "
8222 "outside backup area\n");
8229 /*******************************************************************************
8230 * Function: recover_backup_imsm
8231 * Description: Function recovers critical data from the Migration Copy Area
8232 * while assembling an array.
8234 * super : imsm internal array info
8235 * info : general array info
8237 * 0 : success (or there is no data to recover)
8239 ******************************************************************************/
8240 int recover_backup_imsm(struct supertype
*st
, struct mdinfo
*info
)
8242 struct intel_super
*super
= st
->sb
;
8243 struct migr_record
*migr_rec
= super
->migr_rec
;
8244 struct imsm_map
*map_dest
= NULL
;
8245 struct intel_dev
*id
= NULL
;
8246 unsigned long long read_offset
;
8247 unsigned long long write_offset
;
8249 int *targets
= NULL
;
8250 int new_disks
, i
, err
;
8253 unsigned long curr_migr_unit
= __le32_to_cpu(migr_rec
->curr_migr_unit
);
8254 unsigned long num_migr_units
= __le32_to_cpu(migr_rec
->num_migr_units
);
8256 int skipped_disks
= 0;
8257 int max_degradation
;
8259 err
= sysfs_get_str(info
, NULL
, "array_state", (char *)buffer
, 20);
8263 /* recover data only during assemblation */
8264 if (strncmp(buffer
, "inactive", 8) != 0)
8266 /* no data to recover */
8267 if (__le32_to_cpu(migr_rec
->rec_status
) == UNIT_SRC_NORMAL
)
8269 if (curr_migr_unit
>= num_migr_units
)
8272 /* find device during reshape */
8273 for (id
= super
->devlist
; id
; id
= id
->next
)
8274 if (is_gen_migration(id
->dev
))
8279 map_dest
= get_imsm_map(id
->dev
, 0);
8280 new_disks
= map_dest
->num_members
;
8281 max_degradation
= new_disks
- imsm_num_data_members(id
->dev
, 0);
8283 read_offset
= (unsigned long long)
8284 __le32_to_cpu(migr_rec
->ckpt_area_pba
) * 512;
8286 write_offset
= ((unsigned long long)
8287 __le32_to_cpu(migr_rec
->dest_1st_member_lba
) +
8288 __le32_to_cpu(map_dest
->pba_of_lba0
)) * 512;
8290 unit_len
= __le32_to_cpu(migr_rec
->dest_depth_per_unit
) * 512;
8291 if (posix_memalign((void **)&buf
, 512, unit_len
) != 0)
8293 targets
= malloc(new_disks
* sizeof(int));
8297 open_backup_targets(info
, new_disks
, targets
);
8299 for (i
= 0; i
< new_disks
; i
++) {
8300 if (targets
[i
] < 0) {
8304 if (lseek64(targets
[i
], read_offset
, SEEK_SET
) < 0) {
8306 Name
": Cannot seek to block: %s\n",
8310 if ((unsigned)read(targets
[i
], buf
, unit_len
) != unit_len
) {
8312 Name
": Cannot read copy area block: %s\n",
8316 if (lseek64(targets
[i
], write_offset
, SEEK_SET
) < 0) {
8318 Name
": Cannot seek to block: %s\n",
8322 if ((unsigned)write(targets
[i
], buf
, unit_len
) != unit_len
) {
8324 Name
": Cannot restore block: %s\n",
8330 if (skipped_disks
> max_degradation
) {
8332 Name
": Cannot restore data from backup."
8333 " Too many failed disks\n");
8337 if (save_checkpoint_imsm(st
, info
, UNIT_SRC_NORMAL
)) {
8338 /* ignore error == 2, this can mean end of reshape here
8340 dprintf("imsm: Cannot write checkpoint to "
8341 "migration record (UNIT_SRC_NORMAL) during restart\n");
8347 for (i
= 0; i
< new_disks
; i
++)
8356 static char disk_by_path
[] = "/dev/disk/by-path/";
8358 static const char *imsm_get_disk_controller_domain(const char *path
)
8360 char disk_path
[PATH_MAX
];
8364 strncpy(disk_path
, disk_by_path
, PATH_MAX
- 1);
8365 strncat(disk_path
, path
, PATH_MAX
- strlen(disk_path
) - 1);
8366 if (stat(disk_path
, &st
) == 0) {
8367 struct sys_dev
* hba
;
8370 path
= devt_to_devpath(st
.st_rdev
);
8373 hba
= find_disk_attached_hba(-1, path
);
8374 if (hba
&& hba
->type
== SYS_DEV_SAS
)
8376 else if (hba
&& hba
->type
== SYS_DEV_SATA
)
8380 dprintf("path: %s hba: %s attached: %s\n",
8381 path
, (hba
) ? hba
->path
: "NULL", drv
);
8389 static int imsm_find_array_minor_by_subdev(int subdev
, int container
, int *minor
)
8391 char subdev_name
[20];
8392 struct mdstat_ent
*mdstat
;
8394 sprintf(subdev_name
, "%d", subdev
);
8395 mdstat
= mdstat_by_subdev(subdev_name
, container
);
8399 *minor
= mdstat
->devnum
;
8400 free_mdstat(mdstat
);
8404 static int imsm_reshape_is_allowed_on_container(struct supertype
*st
,
8405 struct geo_params
*geo
,
8406 int *old_raid_disks
)
8408 /* currently we only support increasing the number of devices
8409 * for a container. This increases the number of device for each
8410 * member array. They must all be RAID0 or RAID5.
8413 struct mdinfo
*info
, *member
;
8414 int devices_that_can_grow
= 0;
8416 dprintf("imsm: imsm_reshape_is_allowed_on_container(ENTER): "
8417 "st->devnum = (%i)\n",
8420 if (geo
->size
!= -1 ||
8421 geo
->level
!= UnSet
||
8422 geo
->layout
!= UnSet
||
8423 geo
->chunksize
!= 0 ||
8424 geo
->raid_disks
== UnSet
) {
8425 dprintf("imsm: Container operation is allowed for "
8426 "raid disks number change only.\n");
8430 info
= container_content_imsm(st
, NULL
);
8431 for (member
= info
; member
; member
= member
->next
) {
8435 dprintf("imsm: checking device_num: %i\n",
8436 member
->container_member
);
8438 if (geo
->raid_disks
<= member
->array
.raid_disks
) {
8439 /* we work on container for Online Capacity Expansion
8440 * only so raid_disks has to grow
8442 dprintf("imsm: for container operation raid disks "
8443 "increase is required\n");
8447 if ((info
->array
.level
!= 0) &&
8448 (info
->array
.level
!= 5)) {
8449 /* we cannot use this container with other raid level
8451 dprintf("imsm: for container operation wrong"
8452 " raid level (%i) detected\n",
8456 /* check for platform support
8457 * for this raid level configuration
8459 struct intel_super
*super
= st
->sb
;
8460 if (!is_raid_level_supported(super
->orom
,
8461 member
->array
.level
,
8463 dprintf("platform does not support raid%d with"
8467 geo
->raid_disks
> 1 ? "s" : "");
8470 /* check if component size is aligned to chunk size
8472 if (info
->component_size
%
8473 (info
->array
.chunk_size
/512)) {
8474 dprintf("Component size is not aligned to "
8480 if (*old_raid_disks
&&
8481 info
->array
.raid_disks
!= *old_raid_disks
)
8483 *old_raid_disks
= info
->array
.raid_disks
;
8485 /* All raid5 and raid0 volumes in container
8486 * have to be ready for Online Capacity Expansion
8487 * so they need to be assembled. We have already
8488 * checked that no recovery etc is happening.
8490 result
= imsm_find_array_minor_by_subdev(member
->container_member
,
8494 dprintf("imsm: cannot find array\n");
8497 devices_that_can_grow
++;
8500 if (!member
&& devices_that_can_grow
)
8504 dprintf("\tContainer operation allowed\n");
8506 dprintf("\tError: %i\n", ret_val
);
8511 /* Function: get_spares_for_grow
8512 * Description: Allocates memory and creates list of spare devices
8513 * avaliable in container. Checks if spare drive size is acceptable.
8514 * Parameters: Pointer to the supertype structure
8515 * Returns: Pointer to the list of spare devices (mdinfo structure) on success,
8518 static struct mdinfo
*get_spares_for_grow(struct supertype
*st
)
8520 unsigned long long min_size
= min_acceptable_spare_size_imsm(st
);
8521 return container_choose_spares(st
, min_size
, NULL
, NULL
, NULL
, 0);
8524 /******************************************************************************
8525 * function: imsm_create_metadata_update_for_reshape
8526 * Function creates update for whole IMSM container.
8528 ******************************************************************************/
8529 static int imsm_create_metadata_update_for_reshape(
8530 struct supertype
*st
,
8531 struct geo_params
*geo
,
8533 struct imsm_update_reshape
**updatep
)
8535 struct intel_super
*super
= st
->sb
;
8536 struct imsm_super
*mpb
= super
->anchor
;
8537 int update_memory_size
= 0;
8538 struct imsm_update_reshape
*u
= NULL
;
8539 struct mdinfo
*spares
= NULL
;
8541 int delta_disks
= 0;
8544 dprintf("imsm_update_metadata_for_reshape(enter) raid_disks = %i\n",
8547 delta_disks
= geo
->raid_disks
- old_raid_disks
;
8549 /* size of all update data without anchor */
8550 update_memory_size
= sizeof(struct imsm_update_reshape
);
8552 /* now add space for spare disks that we need to add. */
8553 update_memory_size
+= sizeof(u
->new_disks
[0]) * (delta_disks
- 1);
8555 u
= calloc(1, update_memory_size
);
8558 "cannot get memory for imsm_update_reshape update\n");
8561 u
->type
= update_reshape_container_disks
;
8562 u
->old_raid_disks
= old_raid_disks
;
8563 u
->new_raid_disks
= geo
->raid_disks
;
8565 /* now get spare disks list
8567 spares
= get_spares_for_grow(st
);
8570 || delta_disks
> spares
->array
.spare_disks
) {
8571 fprintf(stderr
, Name
": imsm: ERROR: Cannot get spare devices "
8572 "for %s.\n", geo
->dev_name
);
8577 /* we have got spares
8578 * update disk list in imsm_disk list table in anchor
8580 dprintf("imsm: %i spares are available.\n\n",
8581 spares
->array
.spare_disks
);
8584 for (i
= 0; i
< delta_disks
; i
++) {
8589 u
->new_disks
[i
] = makedev(dev
->disk
.major
,
8591 dl
= get_disk_super(super
, dev
->disk
.major
, dev
->disk
.minor
);
8592 dl
->index
= mpb
->num_disks
;
8602 dprintf("imsm: reshape update preparation :");
8603 if (i
== delta_disks
) {
8606 return update_memory_size
;
8609 dprintf(" Error\n");
8614 /******************************************************************************
8615 * function: imsm_create_metadata_update_for_migration()
8616 * Creates update for IMSM array.
8618 ******************************************************************************/
8619 static int imsm_create_metadata_update_for_migration(
8620 struct supertype
*st
,
8621 struct geo_params
*geo
,
8622 struct imsm_update_reshape_migration
**updatep
)
8624 struct intel_super
*super
= st
->sb
;
8625 int update_memory_size
= 0;
8626 struct imsm_update_reshape_migration
*u
= NULL
;
8627 struct imsm_dev
*dev
;
8628 int previous_level
= -1;
8630 dprintf("imsm_create_metadata_update_for_migration(enter)"
8631 " New Level = %i\n", geo
->level
);
8633 /* size of all update data without anchor */
8634 update_memory_size
= sizeof(struct imsm_update_reshape_migration
);
8636 u
= calloc(1, update_memory_size
);
8638 dprintf("error: cannot get memory for "
8639 "imsm_create_metadata_update_for_migration\n");
8642 u
->type
= update_reshape_migration
;
8643 u
->subdev
= super
->current_vol
;
8644 u
->new_level
= geo
->level
;
8645 u
->new_layout
= geo
->layout
;
8646 u
->new_raid_disks
= u
->old_raid_disks
= geo
->raid_disks
;
8647 u
->new_disks
[0] = -1;
8648 u
->new_chunksize
= -1;
8650 dev
= get_imsm_dev(super
, u
->subdev
);
8652 struct imsm_map
*map
;
8654 map
= get_imsm_map(dev
, 0);
8656 int current_chunk_size
=
8657 __le16_to_cpu(map
->blocks_per_strip
) / 2;
8659 if (geo
->chunksize
!= current_chunk_size
) {
8660 u
->new_chunksize
= geo
->chunksize
/ 1024;
8662 "chunk size change from %i to %i\n",
8663 current_chunk_size
, u
->new_chunksize
);
8665 previous_level
= map
->raid_level
;
8668 if ((geo
->level
== 5) && (previous_level
== 0)) {
8669 struct mdinfo
*spares
= NULL
;
8671 u
->new_raid_disks
++;
8672 spares
= get_spares_for_grow(st
);
8673 if ((spares
== NULL
) || (spares
->array
.spare_disks
< 1)) {
8676 update_memory_size
= 0;
8677 dprintf("error: cannot get spare device "
8678 "for requested migration");
8683 dprintf("imsm: reshape update preparation : OK\n");
8686 return update_memory_size
;
8689 static void imsm_update_metadata_locally(struct supertype
*st
,
8692 struct metadata_update mu
;
8697 mu
.space_list
= NULL
;
8699 imsm_prepare_update(st
, &mu
);
8700 imsm_process_update(st
, &mu
);
8702 while (mu
.space_list
) {
8703 void **space
= mu
.space_list
;
8704 mu
.space_list
= *space
;
8709 /***************************************************************************
8710 * Function: imsm_analyze_change
8711 * Description: Function analyze change for single volume
8712 * and validate if transition is supported
8713 * Parameters: Geometry parameters, supertype structure
8714 * Returns: Operation type code on success, -1 if fail
8715 ****************************************************************************/
8716 enum imsm_reshape_type
imsm_analyze_change(struct supertype
*st
,
8717 struct geo_params
*geo
)
8726 getinfo_super_imsm_volume(st
, &info
, NULL
);
8727 if ((geo
->level
!= info
.array
.level
) &&
8728 (geo
->level
>= 0) &&
8729 (geo
->level
!= UnSet
)) {
8730 switch (info
.array
.level
) {
8732 if (geo
->level
== 5) {
8733 change
= CH_MIGRATION
;
8734 if (geo
->layout
!= ALGORITHM_LEFT_ASYMMETRIC
) {
8736 Name
" Error. Requested Layout "
8737 "not supported (left-asymmetric layout "
8738 "is supported only)!\n");
8740 goto analyse_change_exit
;
8742 layout
= geo
->layout
;
8744 devNumChange
= 1; /* parity disk added */
8745 } else if (geo
->level
== 10) {
8746 change
= CH_TAKEOVER
;
8748 devNumChange
= 2; /* two mirrors added */
8749 layout
= 0x102; /* imsm supported layout */
8754 if (geo
->level
== 0) {
8755 change
= CH_TAKEOVER
;
8757 devNumChange
= -(geo
->raid_disks
/2);
8758 layout
= 0; /* imsm raid0 layout */
8764 Name
" Error. Level Migration from %d to %d "
8766 info
.array
.level
, geo
->level
);
8767 goto analyse_change_exit
;
8770 geo
->level
= info
.array
.level
;
8772 if ((geo
->layout
!= info
.array
.layout
)
8773 && ((geo
->layout
!= UnSet
) && (geo
->layout
!= -1))) {
8774 change
= CH_MIGRATION
;
8775 if ((info
.array
.layout
== 0)
8776 && (info
.array
.level
== 5)
8777 && (geo
->layout
== 5)) {
8778 /* reshape 5 -> 4 */
8779 } else if ((info
.array
.layout
== 5)
8780 && (info
.array
.level
== 5)
8781 && (geo
->layout
== 0)) {
8782 /* reshape 4 -> 5 */
8787 Name
" Error. Layout Migration from %d to %d "
8789 info
.array
.layout
, geo
->layout
);
8791 goto analyse_change_exit
;
8794 geo
->layout
= info
.array
.layout
;
8796 if ((geo
->chunksize
> 0) && (geo
->chunksize
!= UnSet
)
8797 && (geo
->chunksize
!= info
.array
.chunk_size
))
8798 change
= CH_MIGRATION
;
8800 geo
->chunksize
= info
.array
.chunk_size
;
8802 chunk
= geo
->chunksize
/ 1024;
8803 if (!validate_geometry_imsm(st
,
8806 geo
->raid_disks
+ devNumChange
,
8813 struct intel_super
*super
= st
->sb
;
8814 struct imsm_super
*mpb
= super
->anchor
;
8816 if (mpb
->num_raid_devs
> 1) {
8818 Name
" Error. Cannot perform operation on %s"
8819 "- for this operation it MUST be single "
8820 "array in container\n",
8826 analyse_change_exit
:
8831 int imsm_takeover(struct supertype
*st
, struct geo_params
*geo
)
8833 struct intel_super
*super
= st
->sb
;
8834 struct imsm_update_takeover
*u
;
8836 u
= malloc(sizeof(struct imsm_update_takeover
));
8840 u
->type
= update_takeover
;
8841 u
->subarray
= super
->current_vol
;
8843 /* 10->0 transition */
8844 if (geo
->level
== 0)
8845 u
->direction
= R10_TO_R0
;
8847 /* 0->10 transition */
8848 if (geo
->level
== 10)
8849 u
->direction
= R0_TO_R10
;
8851 /* update metadata locally */
8852 imsm_update_metadata_locally(st
, u
,
8853 sizeof(struct imsm_update_takeover
));
8854 /* and possibly remotely */
8855 if (st
->update_tail
)
8856 append_metadata_update(st
, u
,
8857 sizeof(struct imsm_update_takeover
));
8864 static int imsm_reshape_super(struct supertype
*st
, long long size
, int level
,
8865 int layout
, int chunksize
, int raid_disks
,
8866 int delta_disks
, char *backup
, char *dev
,
8870 struct geo_params geo
;
8872 dprintf("imsm: reshape_super called.\n");
8874 memset(&geo
, 0, sizeof(struct geo_params
));
8877 geo
.dev_id
= st
->devnum
;
8880 geo
.layout
= layout
;
8881 geo
.chunksize
= chunksize
;
8882 geo
.raid_disks
= raid_disks
;
8883 if (delta_disks
!= UnSet
)
8884 geo
.raid_disks
+= delta_disks
;
8886 dprintf("\tfor level : %i\n", geo
.level
);
8887 dprintf("\tfor raid_disks : %i\n", geo
.raid_disks
);
8889 if (experimental() == 0)
8892 if (st
->container_dev
== st
->devnum
) {
8893 /* On container level we can only increase number of devices. */
8894 dprintf("imsm: info: Container operation\n");
8895 int old_raid_disks
= 0;
8897 if (imsm_reshape_is_allowed_on_container(
8898 st
, &geo
, &old_raid_disks
)) {
8899 struct imsm_update_reshape
*u
= NULL
;
8902 len
= imsm_create_metadata_update_for_reshape(
8903 st
, &geo
, old_raid_disks
, &u
);
8906 dprintf("imsm: Cannot prepare update\n");
8907 goto exit_imsm_reshape_super
;
8911 /* update metadata locally */
8912 imsm_update_metadata_locally(st
, u
, len
);
8913 /* and possibly remotely */
8914 if (st
->update_tail
)
8915 append_metadata_update(st
, u
, len
);
8920 fprintf(stderr
, Name
": (imsm) Operation "
8921 "is not allowed on this container\n");
8924 /* On volume level we support following operations
8925 * - takeover: raid10 -> raid0; raid0 -> raid10
8926 * - chunk size migration
8927 * - migration: raid5 -> raid0; raid0 -> raid5
8929 struct intel_super
*super
= st
->sb
;
8930 struct intel_dev
*dev
= super
->devlist
;
8932 dprintf("imsm: info: Volume operation\n");
8933 /* find requested device */
8935 if (imsm_find_array_minor_by_subdev(
8936 dev
->index
, st
->container_dev
, &devnum
) == 0
8937 && devnum
== geo
.dev_id
)
8942 fprintf(stderr
, Name
" Cannot find %s (%i) subarray\n",
8943 geo
.dev_name
, geo
.dev_id
);
8944 goto exit_imsm_reshape_super
;
8946 super
->current_vol
= dev
->index
;
8947 change
= imsm_analyze_change(st
, &geo
);
8950 ret_val
= imsm_takeover(st
, &geo
);
8952 case CH_MIGRATION
: {
8953 struct imsm_update_reshape_migration
*u
= NULL
;
8955 imsm_create_metadata_update_for_migration(
8959 "Cannot prepare update\n");
8963 /* update metadata locally */
8964 imsm_update_metadata_locally(st
, u
, len
);
8965 /* and possibly remotely */
8966 if (st
->update_tail
)
8967 append_metadata_update(st
, u
, len
);
8977 exit_imsm_reshape_super
:
8978 dprintf("imsm: reshape_super Exit code = %i\n", ret_val
);
8982 /*******************************************************************************
8983 * Function: wait_for_reshape_imsm
8984 * Description: Function writes new sync_max value and waits until
8985 * reshape process reach new position
8987 * sra : general array info
8988 * ndata : number of disks in new array's layout
8991 * 1 : there is no reshape in progress,
8993 ******************************************************************************/
8994 int wait_for_reshape_imsm(struct mdinfo
*sra
, int ndata
)
8996 int fd
= sysfs_get_fd(sra
, NULL
, "reshape_position");
8997 unsigned long long completed
;
8998 /* to_complete : new sync_max position */
8999 unsigned long long to_complete
= sra
->reshape_progress
;
9000 unsigned long long position_to_set
= to_complete
/ ndata
;
9003 dprintf("imsm: wait_for_reshape_imsm() "
9004 "cannot open reshape_position\n");
9008 if (sysfs_fd_get_ll(fd
, &completed
) < 0) {
9009 dprintf("imsm: wait_for_reshape_imsm() "
9010 "cannot read reshape_position (no reshape in progres)\n");
9015 if (completed
> to_complete
) {
9016 dprintf("imsm: wait_for_reshape_imsm() "
9017 "wrong next position to set %llu (%llu)\n",
9018 to_complete
, completed
);
9022 dprintf("Position set: %llu\n", position_to_set
);
9023 if (sysfs_set_num(sra
, NULL
, "sync_max",
9024 position_to_set
) != 0) {
9025 dprintf("imsm: wait_for_reshape_imsm() "
9026 "cannot set reshape position to %llu\n",
9037 select(fd
+1, &rfds
, NULL
, NULL
, NULL
);
9038 if (sysfs_get_str(sra
, NULL
, "sync_action",
9040 strncmp(action
, "reshape", 7) != 0)
9042 if (sysfs_fd_get_ll(fd
, &completed
) < 0) {
9043 dprintf("imsm: wait_for_reshape_imsm() "
9044 "cannot read reshape_position (in loop)\n");
9048 } while (completed
< to_complete
);
9054 /*******************************************************************************
9055 * Function: check_degradation_change
9056 * Description: Check that array hasn't become failed.
9058 * info : for sysfs access
9059 * sources : source disks descriptors
9060 * degraded: previous degradation level
9063 ******************************************************************************/
9064 int check_degradation_change(struct mdinfo
*info
,
9068 unsigned long long new_degraded
;
9069 sysfs_get_ll(info
, NULL
, "degraded", &new_degraded
);
9070 if (new_degraded
!= (unsigned long long)degraded
) {
9071 /* check each device to ensure it is still working */
9074 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
9075 if (sd
->disk
.state
& (1<<MD_DISK_FAULTY
))
9077 if (sd
->disk
.state
& (1<<MD_DISK_SYNC
)) {
9079 if (sysfs_get_str(info
,
9080 sd
, "state", sbuf
, 20) < 0 ||
9081 strstr(sbuf
, "faulty") ||
9082 strstr(sbuf
, "in_sync") == NULL
) {
9083 /* this device is dead */
9084 sd
->disk
.state
= (1<<MD_DISK_FAULTY
);
9085 if (sd
->disk
.raid_disk
>= 0 &&
9086 sources
[sd
->disk
.raid_disk
] >= 0) {
9088 sd
->disk
.raid_disk
]);
9089 sources
[sd
->disk
.raid_disk
] =
9098 return new_degraded
;
9101 /*******************************************************************************
9102 * Function: imsm_manage_reshape
9103 * Description: Function finds array under reshape and it manages reshape
9104 * process. It creates stripes backups (if required) and sets
9107 * afd : Backup handle (nattive) - not used
9108 * sra : general array info
9109 * reshape : reshape parameters - not used
9110 * st : supertype structure
9111 * blocks : size of critical section [blocks]
9112 * fds : table of source device descriptor
9113 * offsets : start of array (offest per devices)
9115 * destfd : table of destination device descriptor
9116 * destoffsets : table of destination offsets (per device)
9118 * 1 : success, reshape is done
9120 ******************************************************************************/
9121 static int imsm_manage_reshape(
9122 int afd
, struct mdinfo
*sra
, struct reshape
*reshape
,
9123 struct supertype
*st
, unsigned long backup_blocks
,
9124 int *fds
, unsigned long long *offsets
,
9125 int dests
, int *destfd
, unsigned long long *destoffsets
)
9128 struct intel_super
*super
= st
->sb
;
9129 struct intel_dev
*dv
= NULL
;
9130 struct imsm_dev
*dev
= NULL
;
9131 struct imsm_map
*map_src
;
9132 int migr_vol_qan
= 0;
9133 int ndata
, odata
; /* [bytes] */
9134 int chunk
; /* [bytes] */
9135 struct migr_record
*migr_rec
;
9137 unsigned int buf_size
; /* [bytes] */
9138 unsigned long long max_position
; /* array size [bytes] */
9139 unsigned long long next_step
; /* [blocks]/[bytes] */
9140 unsigned long long old_data_stripe_length
;
9141 unsigned long long start_src
; /* [bytes] */
9142 unsigned long long start
; /* [bytes] */
9143 unsigned long long start_buf_shift
; /* [bytes] */
9145 int source_layout
= 0;
9147 if (!fds
|| !offsets
|| !sra
)
9150 /* Find volume during the reshape */
9151 for (dv
= super
->devlist
; dv
; dv
= dv
->next
) {
9152 if (dv
->dev
->vol
.migr_type
== MIGR_GEN_MIGR
9153 && dv
->dev
->vol
.migr_state
== 1) {
9158 /* Only one volume can migrate at the same time */
9159 if (migr_vol_qan
!= 1) {
9160 fprintf(stderr
, Name
" : %s", migr_vol_qan
?
9161 "Number of migrating volumes greater than 1\n" :
9162 "There is no volume during migrationg\n");
9166 map_src
= get_imsm_map(dev
, 1);
9167 if (map_src
== NULL
)
9170 ndata
= imsm_num_data_members(dev
, 0);
9171 odata
= imsm_num_data_members(dev
, 1);
9173 chunk
= __le16_to_cpu(map_src
->blocks_per_strip
) * 512;
9174 old_data_stripe_length
= odata
* chunk
;
9176 migr_rec
= super
->migr_rec
;
9178 /* initialize migration record for start condition */
9179 if (sra
->reshape_progress
== 0)
9180 init_migr_record_imsm(st
, dev
, sra
);
9182 if (__le32_to_cpu(migr_rec
->rec_status
) != UNIT_SRC_NORMAL
) {
9183 dprintf("imsm: cannot restart migration when data "
9184 "are present in copy area.\n");
9190 buf_size
= __le32_to_cpu(migr_rec
->blocks_per_unit
) * 512;
9191 /* extend buffer size for parity disk */
9192 buf_size
+= __le32_to_cpu(migr_rec
->dest_depth_per_unit
) * 512;
9193 /* add space for stripe aligment */
9194 buf_size
+= old_data_stripe_length
;
9195 if (posix_memalign((void **)&buf
, 4096, buf_size
)) {
9196 dprintf("imsm: Cannot allocate checpoint buffer\n");
9200 max_position
= sra
->component_size
* ndata
;
9201 source_layout
= imsm_level_to_layout(map_src
->raid_level
);
9203 while (__le32_to_cpu(migr_rec
->curr_migr_unit
) <
9204 __le32_to_cpu(migr_rec
->num_migr_units
)) {
9205 /* current reshape position [blocks] */
9206 unsigned long long current_position
=
9207 __le32_to_cpu(migr_rec
->blocks_per_unit
)
9208 * __le32_to_cpu(migr_rec
->curr_migr_unit
);
9209 unsigned long long border
;
9211 /* Check that array hasn't become failed.
9213 degraded
= check_degradation_change(sra
, fds
, degraded
);
9215 dprintf("imsm: Abort reshape due to degradation"
9216 " level (%i)\n", degraded
);
9220 next_step
= __le32_to_cpu(migr_rec
->blocks_per_unit
);
9222 if ((current_position
+ next_step
) > max_position
)
9223 next_step
= max_position
- current_position
;
9225 start
= current_position
* 512;
9227 /* allign reading start to old geometry */
9228 start_buf_shift
= start
% old_data_stripe_length
;
9229 start_src
= start
- start_buf_shift
;
9231 border
= (start_src
/ odata
) - (start
/ ndata
);
9233 if (border
<= __le32_to_cpu(migr_rec
->dest_depth_per_unit
)) {
9234 /* save critical stripes to buf
9235 * start - start address of current unit
9237 * start_src - start address of current unit
9238 * to backup alligned to source array
9241 unsigned long long next_step_filler
= 0;
9242 unsigned long long copy_length
= next_step
* 512;
9244 /* allign copy area length to stripe in old geometry */
9245 next_step_filler
= ((copy_length
+ start_buf_shift
)
9246 % old_data_stripe_length
);
9247 if (next_step_filler
)
9248 next_step_filler
= (old_data_stripe_length
9249 - next_step_filler
);
9250 dprintf("save_stripes() parameters: start = %llu,"
9251 "\tstart_src = %llu,\tnext_step*512 = %llu,"
9252 "\tstart_in_buf_shift = %llu,"
9253 "\tnext_step_filler = %llu\n",
9254 start
, start_src
, copy_length
,
9255 start_buf_shift
, next_step_filler
);
9257 if (save_stripes(fds
, offsets
, map_src
->num_members
,
9258 chunk
, map_src
->raid_level
,
9259 source_layout
, 0, NULL
, start_src
,
9261 next_step_filler
+ start_buf_shift
,
9263 dprintf("imsm: Cannot save stripes"
9267 /* Convert data to destination format and store it
9268 * in backup general migration area
9270 if (save_backup_imsm(st
, dev
, sra
,
9271 buf
+ start_buf_shift
, copy_length
)) {
9272 dprintf("imsm: Cannot save stripes to "
9273 "target devices\n");
9276 if (save_checkpoint_imsm(st
, sra
,
9277 UNIT_SRC_IN_CP_AREA
)) {
9278 dprintf("imsm: Cannot write checkpoint to "
9279 "migration record (UNIT_SRC_IN_CP_AREA)\n");
9283 /* set next step to use whole border area */
9284 border
/= next_step
;
9286 next_step
*= border
;
9288 /* When data backed up, checkpoint stored,
9289 * kick the kernel to reshape unit of data
9291 next_step
= next_step
+ sra
->reshape_progress
;
9292 /* limit next step to array max position */
9293 if (next_step
> max_position
)
9294 next_step
= max_position
;
9295 sysfs_set_num(sra
, NULL
, "suspend_lo", sra
->reshape_progress
);
9296 sysfs_set_num(sra
, NULL
, "suspend_hi", next_step
);
9297 sra
->reshape_progress
= next_step
;
9299 /* wait until reshape finish */
9300 if (wait_for_reshape_imsm(sra
, ndata
) < 0) {
9301 dprintf("wait_for_reshape_imsm returned error!\n");
9305 if (save_checkpoint_imsm(st
, sra
, UNIT_SRC_NORMAL
) == 1) {
9306 /* ignore error == 2, this can mean end of reshape here
9308 dprintf("imsm: Cannot write checkpoint to "
9309 "migration record (UNIT_SRC_NORMAL)\n");
9315 /* return '1' if done */
9323 #endif /* MDASSEMBLE */
9325 struct superswitch super_imsm
= {
9327 .examine_super
= examine_super_imsm
,
9328 .brief_examine_super
= brief_examine_super_imsm
,
9329 .brief_examine_subarrays
= brief_examine_subarrays_imsm
,
9330 .export_examine_super
= export_examine_super_imsm
,
9331 .detail_super
= detail_super_imsm
,
9332 .brief_detail_super
= brief_detail_super_imsm
,
9333 .write_init_super
= write_init_super_imsm
,
9334 .validate_geometry
= validate_geometry_imsm
,
9335 .add_to_super
= add_to_super_imsm
,
9336 .remove_from_super
= remove_from_super_imsm
,
9337 .detail_platform
= detail_platform_imsm
,
9338 .kill_subarray
= kill_subarray_imsm
,
9339 .update_subarray
= update_subarray_imsm
,
9340 .load_container
= load_container_imsm
,
9341 .default_geometry
= default_geometry_imsm
,
9342 .get_disk_controller_domain
= imsm_get_disk_controller_domain
,
9343 .reshape_super
= imsm_reshape_super
,
9344 .manage_reshape
= imsm_manage_reshape
,
9345 .recover_backup
= recover_backup_imsm
,
9347 .match_home
= match_home_imsm
,
9348 .uuid_from_super
= uuid_from_super_imsm
,
9349 .getinfo_super
= getinfo_super_imsm
,
9350 .getinfo_super_disks
= getinfo_super_disks_imsm
,
9351 .update_super
= update_super_imsm
,
9353 .avail_size
= avail_size_imsm
,
9354 .min_acceptable_spare_size
= min_acceptable_spare_size_imsm
,
9356 .compare_super
= compare_super_imsm
,
9358 .load_super
= load_super_imsm
,
9359 .init_super
= init_super_imsm
,
9360 .store_super
= store_super_imsm
,
9361 .free_super
= free_super_imsm
,
9362 .match_metadata_desc
= match_metadata_desc_imsm
,
9363 .container_content
= container_content_imsm
,
9371 .open_new
= imsm_open_new
,
9372 .set_array_state
= imsm_set_array_state
,
9373 .set_disk
= imsm_set_disk
,
9374 .sync_metadata
= imsm_sync_metadata
,
9375 .activate_spare
= imsm_activate_spare
,
9376 .process_update
= imsm_process_update
,
9377 .prepare_update
= imsm_prepare_update
,
9378 #endif /* MDASSEMBLE */