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Commit | Line | Data |
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cdddbdbc DW |
1 | /* |
2 | * mdadm - Intel(R) Matrix Storage Manager Support | |
3 | * | |
a54d5262 | 4 | * Copyright (C) 2002-2008 Intel Corporation |
cdddbdbc DW |
5 | * |
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. | |
9 | * | |
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 | |
13 | * more details. | |
14 | * | |
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. | |
18 | */ | |
19 | ||
51006d85 | 20 | #define HAVE_STDINT_H 1 |
cdddbdbc | 21 | #include "mdadm.h" |
c2a1e7da | 22 | #include "mdmon.h" |
51006d85 | 23 | #include "sha1.h" |
cdddbdbc DW |
24 | #include <values.h> |
25 | #include <scsi/sg.h> | |
26 | #include <ctype.h> | |
27 | ||
28 | /* MPB == Metadata Parameter Block */ | |
29 | #define MPB_SIGNATURE "Intel Raid ISM Cfg Sig. " | |
30 | #define MPB_SIG_LEN (strlen(MPB_SIGNATURE)) | |
31 | #define MPB_VERSION_RAID0 "1.0.00" | |
32 | #define MPB_VERSION_RAID1 "1.1.00" | |
33 | #define MPB_VERSION_RAID5 "1.2.02" | |
34 | #define MAX_SIGNATURE_LENGTH 32 | |
35 | #define MAX_RAID_SERIAL_LEN 16 | |
c2c087e6 DW |
36 | #define MPB_SECTOR_CNT 418 |
37 | #define IMSM_RESERVED_SECTORS 4096 | |
cdddbdbc DW |
38 | |
39 | /* Disk configuration info. */ | |
40 | #define IMSM_MAX_DEVICES 255 | |
41 | struct imsm_disk { | |
42 | __u8 serial[MAX_RAID_SERIAL_LEN];/* 0xD8 - 0xE7 ascii serial number */ | |
43 | __u32 total_blocks; /* 0xE8 - 0xEB total blocks */ | |
44 | __u32 scsi_id; /* 0xEC - 0xEF scsi ID */ | |
45 | __u32 status; /* 0xF0 - 0xF3 */ | |
46 | #define SPARE_DISK 0x01 /* Spare */ | |
47 | #define CONFIGURED_DISK 0x02 /* Member of some RaidDev */ | |
48 | #define FAILED_DISK 0x04 /* Permanent failure */ | |
49 | #define USABLE_DISK 0x08 /* Fully usable unless FAILED_DISK is set */ | |
50 | ||
51 | #define IMSM_DISK_FILLERS 5 | |
52 | __u32 filler[IMSM_DISK_FILLERS]; /* 0xF4 - 0x107 MPB_DISK_FILLERS for future expansion */ | |
53 | }; | |
54 | ||
55 | /* RAID map configuration infos. */ | |
56 | struct imsm_map { | |
57 | __u32 pba_of_lba0; /* start address of partition */ | |
58 | __u32 blocks_per_member;/* blocks per member */ | |
59 | __u32 num_data_stripes; /* number of data stripes */ | |
60 | __u16 blocks_per_strip; | |
61 | __u8 map_state; /* Normal, Uninitialized, Degraded, Failed */ | |
62 | #define IMSM_T_STATE_NORMAL 0 | |
63 | #define IMSM_T_STATE_UNINITIALIZED 1 | |
64 | #define IMSM_T_STATE_DEGRADED 2 /* FIXME: is this correct? */ | |
65 | #define IMSM_T_STATE_FAILED 3 /* FIXME: is this correct? */ | |
66 | __u8 raid_level; | |
67 | #define IMSM_T_RAID0 0 | |
68 | #define IMSM_T_RAID1 1 | |
69 | #define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */ | |
70 | __u8 num_members; /* number of member disks */ | |
71 | __u8 reserved[3]; | |
72 | __u32 filler[7]; /* expansion area */ | |
7eef0453 | 73 | #define IMSM_ORD_REBUILD (1 << 24) |
cdddbdbc | 74 | __u32 disk_ord_tbl[1]; /* disk_ord_tbl[num_members], |
7eef0453 DW |
75 | * top byte contains some flags |
76 | */ | |
cdddbdbc DW |
77 | } __attribute__ ((packed)); |
78 | ||
79 | struct imsm_vol { | |
f8f603f1 DW |
80 | __u32 curr_migr_unit; |
81 | __u32 reserved; | |
cdddbdbc DW |
82 | __u8 migr_state; /* Normal or Migrating */ |
83 | __u8 migr_type; /* Initializing, Rebuilding, ... */ | |
84 | __u8 dirty; | |
85 | __u8 fill[1]; | |
86 | __u32 filler[5]; | |
87 | struct imsm_map map[1]; | |
88 | /* here comes another one if migr_state */ | |
89 | } __attribute__ ((packed)); | |
90 | ||
91 | struct imsm_dev { | |
92 | __u8 volume[MAX_RAID_SERIAL_LEN]; | |
93 | __u32 size_low; | |
94 | __u32 size_high; | |
95 | __u32 status; /* Persistent RaidDev status */ | |
96 | __u32 reserved_blocks; /* Reserved blocks at beginning of volume */ | |
97 | #define IMSM_DEV_FILLERS 12 | |
98 | __u32 filler[IMSM_DEV_FILLERS]; | |
99 | struct imsm_vol vol; | |
100 | } __attribute__ ((packed)); | |
101 | ||
102 | struct imsm_super { | |
103 | __u8 sig[MAX_SIGNATURE_LENGTH]; /* 0x00 - 0x1F */ | |
104 | __u32 check_sum; /* 0x20 - 0x23 MPB Checksum */ | |
105 | __u32 mpb_size; /* 0x24 - 0x27 Size of MPB */ | |
106 | __u32 family_num; /* 0x28 - 0x2B Checksum from first time this config was written */ | |
107 | __u32 generation_num; /* 0x2C - 0x2F Incremented each time this array's MPB is written */ | |
604b746f JD |
108 | __u32 error_log_size; /* 0x30 - 0x33 in bytes */ |
109 | __u32 attributes; /* 0x34 - 0x37 */ | |
cdddbdbc DW |
110 | __u8 num_disks; /* 0x38 Number of configured disks */ |
111 | __u8 num_raid_devs; /* 0x39 Number of configured volumes */ | |
604b746f JD |
112 | __u8 error_log_pos; /* 0x3A */ |
113 | __u8 fill[1]; /* 0x3B */ | |
114 | __u32 cache_size; /* 0x3c - 0x40 in mb */ | |
115 | __u32 orig_family_num; /* 0x40 - 0x43 original family num */ | |
116 | __u32 pwr_cycle_count; /* 0x44 - 0x47 simulated power cycle count for array */ | |
117 | __u32 bbm_log_size; /* 0x48 - 0x4B - size of bad Block Mgmt Log in bytes */ | |
118 | #define IMSM_FILLERS 35 | |
119 | __u32 filler[IMSM_FILLERS]; /* 0x4C - 0xD7 RAID_MPB_FILLERS */ | |
cdddbdbc DW |
120 | struct imsm_disk disk[1]; /* 0xD8 diskTbl[numDisks] */ |
121 | /* here comes imsm_dev[num_raid_devs] */ | |
604b746f | 122 | /* here comes BBM logs */ |
cdddbdbc DW |
123 | } __attribute__ ((packed)); |
124 | ||
604b746f JD |
125 | #define BBM_LOG_MAX_ENTRIES 254 |
126 | ||
127 | struct bbm_log_entry { | |
128 | __u64 defective_block_start; | |
129 | #define UNREADABLE 0xFFFFFFFF | |
130 | __u32 spare_block_offset; | |
131 | __u16 remapped_marked_count; | |
132 | __u16 disk_ordinal; | |
133 | } __attribute__ ((__packed__)); | |
134 | ||
135 | struct bbm_log { | |
136 | __u32 signature; /* 0xABADB10C */ | |
137 | __u32 entry_count; | |
138 | __u32 reserved_spare_block_count; /* 0 */ | |
139 | __u32 reserved; /* 0xFFFF */ | |
140 | __u64 first_spare_lba; | |
141 | struct bbm_log_entry mapped_block_entries[BBM_LOG_MAX_ENTRIES]; | |
142 | } __attribute__ ((__packed__)); | |
143 | ||
144 | ||
cdddbdbc DW |
145 | #ifndef MDASSEMBLE |
146 | static char *map_state_str[] = { "normal", "uninitialized", "degraded", "failed" }; | |
147 | #endif | |
148 | ||
87eb16df | 149 | static unsigned int sector_count(__u32 bytes) |
cdddbdbc | 150 | { |
87eb16df DW |
151 | return ((bytes + (512-1)) & (~(512-1))) / 512; |
152 | } | |
cdddbdbc | 153 | |
87eb16df DW |
154 | static unsigned int mpb_sectors(struct imsm_super *mpb) |
155 | { | |
156 | return sector_count(__le32_to_cpu(mpb->mpb_size)); | |
cdddbdbc DW |
157 | } |
158 | ||
159 | /* internal representation of IMSM metadata */ | |
160 | struct intel_super { | |
161 | union { | |
949c47a0 DW |
162 | void *buf; /* O_DIRECT buffer for reading/writing metadata */ |
163 | struct imsm_super *anchor; /* immovable parameters */ | |
cdddbdbc | 164 | }; |
949c47a0 | 165 | size_t len; /* size of the 'buf' allocation */ |
4d7b1503 DW |
166 | void *next_buf; /* for realloc'ing buf from the manager */ |
167 | size_t next_len; | |
c2c087e6 DW |
168 | int updates_pending; /* count of pending updates for mdmon */ |
169 | int creating_imsm; /* flag to indicate container creation */ | |
bf5a934a | 170 | int current_vol; /* index of raid device undergoing creation */ |
949c47a0 DW |
171 | #define IMSM_MAX_RAID_DEVS 2 |
172 | struct imsm_dev *dev_tbl[IMSM_MAX_RAID_DEVS]; | |
cdddbdbc DW |
173 | struct dl { |
174 | struct dl *next; | |
175 | int index; | |
176 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
177 | int major, minor; | |
178 | char *devname; | |
b9f594fe | 179 | struct imsm_disk disk; |
cdddbdbc DW |
180 | int fd; |
181 | } *disks; | |
43dad3d6 | 182 | struct dl *add; /* list of disks to add while mdmon active */ |
47ee5a45 | 183 | struct dl *missing; /* disks removed while we weren't looking */ |
43dad3d6 | 184 | struct bbm_log *bbm_log; |
cdddbdbc DW |
185 | }; |
186 | ||
c2c087e6 DW |
187 | struct extent { |
188 | unsigned long long start, size; | |
189 | }; | |
190 | ||
88758e9d DW |
191 | /* definition of messages passed to imsm_process_update */ |
192 | enum imsm_update_type { | |
193 | update_activate_spare, | |
8273f55e | 194 | update_create_array, |
43dad3d6 | 195 | update_add_disk, |
88758e9d DW |
196 | }; |
197 | ||
198 | struct imsm_update_activate_spare { | |
199 | enum imsm_update_type type; | |
d23fe947 | 200 | struct dl *dl; |
88758e9d DW |
201 | int slot; |
202 | int array; | |
203 | struct imsm_update_activate_spare *next; | |
204 | }; | |
205 | ||
8273f55e DW |
206 | struct imsm_update_create_array { |
207 | enum imsm_update_type type; | |
8273f55e | 208 | int dev_idx; |
6a3e913e | 209 | struct imsm_dev dev; |
8273f55e DW |
210 | }; |
211 | ||
43dad3d6 DW |
212 | struct imsm_update_add_disk { |
213 | enum imsm_update_type type; | |
214 | }; | |
215 | ||
0030e8d6 DW |
216 | static int imsm_env_devname_as_serial(void) |
217 | { | |
218 | char *val = getenv("IMSM_DEVNAME_AS_SERIAL"); | |
219 | ||
220 | if (val && atoi(val) == 1) | |
221 | return 1; | |
222 | ||
223 | return 0; | |
224 | } | |
225 | ||
226 | ||
cdddbdbc DW |
227 | static struct supertype *match_metadata_desc_imsm(char *arg) |
228 | { | |
229 | struct supertype *st; | |
230 | ||
231 | if (strcmp(arg, "imsm") != 0 && | |
232 | strcmp(arg, "default") != 0 | |
233 | ) | |
234 | return NULL; | |
235 | ||
236 | st = malloc(sizeof(*st)); | |
ef609477 | 237 | memset(st, 0, sizeof(*st)); |
cdddbdbc DW |
238 | st->ss = &super_imsm; |
239 | st->max_devs = IMSM_MAX_DEVICES; | |
240 | st->minor_version = 0; | |
241 | st->sb = NULL; | |
242 | return st; | |
243 | } | |
244 | ||
0e600426 | 245 | #ifndef MDASSEMBLE |
cdddbdbc DW |
246 | static __u8 *get_imsm_version(struct imsm_super *mpb) |
247 | { | |
248 | return &mpb->sig[MPB_SIG_LEN]; | |
249 | } | |
0e600426 | 250 | #endif |
cdddbdbc | 251 | |
949c47a0 DW |
252 | /* retrieve a disk directly from the anchor when the anchor is known to be |
253 | * up-to-date, currently only at load time | |
254 | */ | |
255 | static struct imsm_disk *__get_imsm_disk(struct imsm_super *mpb, __u8 index) | |
cdddbdbc | 256 | { |
949c47a0 | 257 | if (index >= mpb->num_disks) |
cdddbdbc DW |
258 | return NULL; |
259 | return &mpb->disk[index]; | |
260 | } | |
261 | ||
0e600426 | 262 | #ifndef MDASSEMBLE |
b9f594fe | 263 | /* retrieve a disk from the parsed metadata */ |
949c47a0 DW |
264 | static struct imsm_disk *get_imsm_disk(struct intel_super *super, __u8 index) |
265 | { | |
b9f594fe DW |
266 | struct dl *d; |
267 | ||
268 | for (d = super->disks; d; d = d->next) | |
269 | if (d->index == index) | |
270 | return &d->disk; | |
271 | ||
272 | return NULL; | |
949c47a0 | 273 | } |
0e600426 | 274 | #endif |
949c47a0 DW |
275 | |
276 | /* generate a checksum directly from the anchor when the anchor is known to be | |
277 | * up-to-date, currently only at load or write_super after coalescing | |
278 | */ | |
279 | static __u32 __gen_imsm_checksum(struct imsm_super *mpb) | |
cdddbdbc DW |
280 | { |
281 | __u32 end = mpb->mpb_size / sizeof(end); | |
282 | __u32 *p = (__u32 *) mpb; | |
283 | __u32 sum = 0; | |
284 | ||
285 | while (end--) | |
286 | sum += __le32_to_cpu(*p++); | |
287 | ||
288 | return sum - __le32_to_cpu(mpb->check_sum); | |
289 | } | |
290 | ||
a965f303 DW |
291 | static size_t sizeof_imsm_map(struct imsm_map *map) |
292 | { | |
293 | return sizeof(struct imsm_map) + sizeof(__u32) * (map->num_members - 1); | |
294 | } | |
295 | ||
296 | struct imsm_map *get_imsm_map(struct imsm_dev *dev, int second_map) | |
cdddbdbc | 297 | { |
a965f303 DW |
298 | struct imsm_map *map = &dev->vol.map[0]; |
299 | ||
300 | if (second_map && !dev->vol.migr_state) | |
301 | return NULL; | |
302 | else if (second_map) { | |
303 | void *ptr = map; | |
304 | ||
305 | return ptr + sizeof_imsm_map(map); | |
306 | } else | |
307 | return map; | |
308 | ||
309 | } | |
cdddbdbc | 310 | |
3393c6af DW |
311 | /* return the size of the device. |
312 | * migr_state increases the returned size if map[0] were to be duplicated | |
313 | */ | |
314 | static size_t sizeof_imsm_dev(struct imsm_dev *dev, int migr_state) | |
a965f303 DW |
315 | { |
316 | size_t size = sizeof(*dev) - sizeof(struct imsm_map) + | |
317 | sizeof_imsm_map(get_imsm_map(dev, 0)); | |
cdddbdbc DW |
318 | |
319 | /* migrating means an additional map */ | |
a965f303 DW |
320 | if (dev->vol.migr_state) |
321 | size += sizeof_imsm_map(get_imsm_map(dev, 1)); | |
3393c6af DW |
322 | else if (migr_state) |
323 | size += sizeof_imsm_map(get_imsm_map(dev, 0)); | |
cdddbdbc DW |
324 | |
325 | return size; | |
326 | } | |
327 | ||
949c47a0 | 328 | static struct imsm_dev *__get_imsm_dev(struct imsm_super *mpb, __u8 index) |
cdddbdbc DW |
329 | { |
330 | int offset; | |
331 | int i; | |
332 | void *_mpb = mpb; | |
333 | ||
949c47a0 | 334 | if (index >= mpb->num_raid_devs) |
cdddbdbc DW |
335 | return NULL; |
336 | ||
337 | /* devices start after all disks */ | |
338 | offset = ((void *) &mpb->disk[mpb->num_disks]) - _mpb; | |
339 | ||
340 | for (i = 0; i <= index; i++) | |
341 | if (i == index) | |
342 | return _mpb + offset; | |
343 | else | |
3393c6af | 344 | offset += sizeof_imsm_dev(_mpb + offset, 0); |
cdddbdbc DW |
345 | |
346 | return NULL; | |
347 | } | |
348 | ||
949c47a0 DW |
349 | static struct imsm_dev *get_imsm_dev(struct intel_super *super, __u8 index) |
350 | { | |
351 | if (index >= super->anchor->num_raid_devs) | |
352 | return NULL; | |
353 | return super->dev_tbl[index]; | |
354 | } | |
355 | ||
7eef0453 DW |
356 | static __u32 get_imsm_ord_tbl_ent(struct imsm_dev *dev, int slot) |
357 | { | |
358 | struct imsm_map *map; | |
359 | ||
360 | if (dev->vol.migr_state) | |
7eef0453 | 361 | map = get_imsm_map(dev, 1); |
fb9bf0d3 DW |
362 | else |
363 | map = get_imsm_map(dev, 0); | |
7eef0453 | 364 | |
ff077194 DW |
365 | /* top byte identifies disk under rebuild */ |
366 | return __le32_to_cpu(map->disk_ord_tbl[slot]); | |
367 | } | |
368 | ||
369 | #define ord_to_idx(ord) (((ord) << 8) >> 8) | |
370 | static __u32 get_imsm_disk_idx(struct imsm_dev *dev, int slot) | |
371 | { | |
372 | __u32 ord = get_imsm_ord_tbl_ent(dev, slot); | |
373 | ||
374 | return ord_to_idx(ord); | |
7eef0453 DW |
375 | } |
376 | ||
be73972f DW |
377 | static void set_imsm_ord_tbl_ent(struct imsm_map *map, int slot, __u32 ord) |
378 | { | |
379 | map->disk_ord_tbl[slot] = __cpu_to_le32(ord); | |
380 | } | |
381 | ||
cdddbdbc DW |
382 | static int get_imsm_raid_level(struct imsm_map *map) |
383 | { | |
384 | if (map->raid_level == 1) { | |
385 | if (map->num_members == 2) | |
386 | return 1; | |
387 | else | |
388 | return 10; | |
389 | } | |
390 | ||
391 | return map->raid_level; | |
392 | } | |
393 | ||
c2c087e6 DW |
394 | static int cmp_extent(const void *av, const void *bv) |
395 | { | |
396 | const struct extent *a = av; | |
397 | const struct extent *b = bv; | |
398 | if (a->start < b->start) | |
399 | return -1; | |
400 | if (a->start > b->start) | |
401 | return 1; | |
402 | return 0; | |
403 | } | |
404 | ||
405 | static struct extent *get_extents(struct intel_super *super, struct dl *dl) | |
406 | { | |
407 | /* find a list of used extents on the given physical device */ | |
c2c087e6 DW |
408 | struct extent *rv, *e; |
409 | int i, j; | |
410 | int memberships = 0; | |
14e8215b | 411 | __u32 reservation = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; |
c2c087e6 | 412 | |
949c47a0 DW |
413 | for (i = 0; i < super->anchor->num_raid_devs; i++) { |
414 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
a965f303 | 415 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2c087e6 DW |
416 | |
417 | for (j = 0; j < map->num_members; j++) { | |
ff077194 | 418 | __u32 index = get_imsm_disk_idx(dev, j); |
c2c087e6 DW |
419 | |
420 | if (index == dl->index) | |
421 | memberships++; | |
422 | } | |
423 | } | |
424 | rv = malloc(sizeof(struct extent) * (memberships + 1)); | |
425 | if (!rv) | |
426 | return NULL; | |
427 | e = rv; | |
428 | ||
949c47a0 DW |
429 | for (i = 0; i < super->anchor->num_raid_devs; i++) { |
430 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
a965f303 | 431 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2c087e6 DW |
432 | |
433 | for (j = 0; j < map->num_members; j++) { | |
ff077194 | 434 | __u32 index = get_imsm_disk_idx(dev, j); |
c2c087e6 DW |
435 | |
436 | if (index == dl->index) { | |
437 | e->start = __le32_to_cpu(map->pba_of_lba0); | |
438 | e->size = __le32_to_cpu(map->blocks_per_member); | |
439 | e++; | |
440 | } | |
441 | } | |
442 | } | |
443 | qsort(rv, memberships, sizeof(*rv), cmp_extent); | |
444 | ||
14e8215b DW |
445 | /* determine the start of the metadata |
446 | * when no raid devices are defined use the default | |
447 | * ...otherwise allow the metadata to truncate the value | |
448 | * as is the case with older versions of imsm | |
449 | */ | |
450 | if (memberships) { | |
451 | struct extent *last = &rv[memberships - 1]; | |
452 | __u32 remainder; | |
453 | ||
454 | remainder = __le32_to_cpu(dl->disk.total_blocks) - | |
455 | (last->start + last->size); | |
456 | if (reservation > remainder) | |
457 | reservation = remainder; | |
458 | } | |
459 | e->start = __le32_to_cpu(dl->disk.total_blocks) - reservation; | |
c2c087e6 DW |
460 | e->size = 0; |
461 | return rv; | |
462 | } | |
463 | ||
14e8215b DW |
464 | /* try to determine how much space is reserved for metadata from |
465 | * the last get_extents() entry, otherwise fallback to the | |
466 | * default | |
467 | */ | |
468 | static __u32 imsm_reserved_sectors(struct intel_super *super, struct dl *dl) | |
469 | { | |
470 | struct extent *e; | |
471 | int i; | |
472 | __u32 rv; | |
473 | ||
474 | /* for spares just return a minimal reservation which will grow | |
475 | * once the spare is picked up by an array | |
476 | */ | |
477 | if (dl->index == -1) | |
478 | return MPB_SECTOR_CNT; | |
479 | ||
480 | e = get_extents(super, dl); | |
481 | if (!e) | |
482 | return MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
483 | ||
484 | /* scroll to last entry */ | |
485 | for (i = 0; e[i].size; i++) | |
486 | continue; | |
487 | ||
488 | rv = __le32_to_cpu(dl->disk.total_blocks) - e[i].start; | |
489 | ||
490 | free(e); | |
491 | ||
492 | return rv; | |
493 | } | |
494 | ||
495 | #ifndef MDASSEMBLE | |
27fd6274 DW |
496 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info); |
497 | ||
cdddbdbc DW |
498 | static void print_imsm_dev(struct imsm_dev *dev, int index) |
499 | { | |
500 | __u64 sz; | |
501 | int slot; | |
a965f303 | 502 | struct imsm_map *map = get_imsm_map(dev, 0); |
b10b37b8 | 503 | __u32 ord; |
cdddbdbc DW |
504 | |
505 | printf("\n"); | |
506 | printf("[%s]:\n", dev->volume); | |
507 | printf(" RAID Level : %d\n", get_imsm_raid_level(map)); | |
508 | printf(" Members : %d\n", map->num_members); | |
509 | for (slot = 0; slot < map->num_members; slot++) | |
ff077194 | 510 | if (index == get_imsm_disk_idx(dev, slot)) |
cdddbdbc | 511 | break; |
b10b37b8 DW |
512 | if (slot < map->num_members) { |
513 | ord = get_imsm_ord_tbl_ent(dev, slot); | |
514 | printf(" This Slot : %d%s\n", slot, | |
515 | ord & IMSM_ORD_REBUILD ? " (out-of-sync)" : ""); | |
516 | } else | |
cdddbdbc DW |
517 | printf(" This Slot : ?\n"); |
518 | sz = __le32_to_cpu(dev->size_high); | |
519 | sz <<= 32; | |
520 | sz += __le32_to_cpu(dev->size_low); | |
521 | printf(" Array Size : %llu%s\n", (unsigned long long)sz, | |
522 | human_size(sz * 512)); | |
523 | sz = __le32_to_cpu(map->blocks_per_member); | |
524 | printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz, | |
525 | human_size(sz * 512)); | |
526 | printf(" Sector Offset : %u\n", | |
527 | __le32_to_cpu(map->pba_of_lba0)); | |
528 | printf(" Num Stripes : %u\n", | |
529 | __le32_to_cpu(map->num_data_stripes)); | |
530 | printf(" Chunk Size : %u KiB\n", | |
531 | __le16_to_cpu(map->blocks_per_strip) / 2); | |
532 | printf(" Reserved : %d\n", __le32_to_cpu(dev->reserved_blocks)); | |
3393c6af DW |
533 | printf(" Migrate State : %s", dev->vol.migr_state ? "migrating" : "idle"); |
534 | if (dev->vol.migr_state) | |
535 | printf(": %s", dev->vol.migr_type ? "rebuilding" : "initializing"); | |
536 | printf("\n"); | |
537 | printf(" Map State : %s", map_state_str[map->map_state]); | |
538 | if (dev->vol.migr_state) { | |
539 | struct imsm_map *map = get_imsm_map(dev, 1); | |
b10b37b8 | 540 | printf(" <-- %s", map_state_str[map->map_state]); |
3393c6af DW |
541 | } |
542 | printf("\n"); | |
cdddbdbc | 543 | printf(" Dirty State : %s\n", dev->vol.dirty ? "dirty" : "clean"); |
cdddbdbc DW |
544 | } |
545 | ||
14e8215b | 546 | static void print_imsm_disk(struct imsm_super *mpb, int index, __u32 reserved) |
cdddbdbc | 547 | { |
949c47a0 | 548 | struct imsm_disk *disk = __get_imsm_disk(mpb, index); |
1f24f035 | 549 | char str[MAX_RAID_SERIAL_LEN + 1]; |
cdddbdbc DW |
550 | __u32 s; |
551 | __u64 sz; | |
552 | ||
e9d82038 DW |
553 | if (index < 0) |
554 | return; | |
555 | ||
cdddbdbc | 556 | printf("\n"); |
1f24f035 | 557 | snprintf(str, MAX_RAID_SERIAL_LEN + 1, "%s", disk->serial); |
cdddbdbc DW |
558 | printf(" Disk%02d Serial : %s\n", index, str); |
559 | s = __le32_to_cpu(disk->status); | |
560 | printf(" State :%s%s%s%s\n", s&SPARE_DISK ? " spare" : "", | |
561 | s&CONFIGURED_DISK ? " active" : "", | |
562 | s&FAILED_DISK ? " failed" : "", | |
563 | s&USABLE_DISK ? " usable" : ""); | |
564 | printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id)); | |
14e8215b | 565 | sz = __le32_to_cpu(disk->total_blocks) - reserved; |
cdddbdbc DW |
566 | printf(" Usable Size : %llu%s\n", (unsigned long long)sz, |
567 | human_size(sz * 512)); | |
568 | } | |
569 | ||
570 | static void examine_super_imsm(struct supertype *st, char *homehost) | |
571 | { | |
572 | struct intel_super *super = st->sb; | |
949c47a0 | 573 | struct imsm_super *mpb = super->anchor; |
cdddbdbc DW |
574 | char str[MAX_SIGNATURE_LENGTH]; |
575 | int i; | |
27fd6274 DW |
576 | struct mdinfo info; |
577 | char nbuf[64]; | |
cdddbdbc | 578 | __u32 sum; |
14e8215b | 579 | __u32 reserved = imsm_reserved_sectors(super, super->disks); |
cdddbdbc | 580 | |
27fd6274 | 581 | |
cdddbdbc DW |
582 | snprintf(str, MPB_SIG_LEN, "%s", mpb->sig); |
583 | printf(" Magic : %s\n", str); | |
584 | snprintf(str, strlen(MPB_VERSION_RAID0), "%s", get_imsm_version(mpb)); | |
585 | printf(" Version : %s\n", get_imsm_version(mpb)); | |
586 | printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num)); | |
587 | printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num)); | |
27fd6274 DW |
588 | getinfo_super_imsm(st, &info); |
589 | fname_from_uuid(st, &info, nbuf,'-'); | |
590 | printf(" UUID : %s\n", nbuf + 5); | |
cdddbdbc DW |
591 | sum = __le32_to_cpu(mpb->check_sum); |
592 | printf(" Checksum : %08x %s\n", sum, | |
949c47a0 | 593 | __gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect"); |
87eb16df | 594 | printf(" MPB Sectors : %d\n", mpb_sectors(mpb)); |
cdddbdbc DW |
595 | printf(" Disks : %d\n", mpb->num_disks); |
596 | printf(" RAID Devices : %d\n", mpb->num_raid_devs); | |
14e8215b | 597 | print_imsm_disk(mpb, super->disks->index, reserved); |
604b746f JD |
598 | if (super->bbm_log) { |
599 | struct bbm_log *log = super->bbm_log; | |
600 | ||
601 | printf("\n"); | |
602 | printf("Bad Block Management Log:\n"); | |
603 | printf(" Log Size : %d\n", __le32_to_cpu(mpb->bbm_log_size)); | |
604 | printf(" Signature : %x\n", __le32_to_cpu(log->signature)); | |
605 | printf(" Entry Count : %d\n", __le32_to_cpu(log->entry_count)); | |
606 | printf(" Spare Blocks : %d\n", __le32_to_cpu(log->reserved_spare_block_count)); | |
607 | printf(" First Spare : %llx\n", __le64_to_cpu(log->first_spare_lba)); | |
608 | } | |
cdddbdbc | 609 | for (i = 0; i < mpb->num_raid_devs; i++) |
949c47a0 | 610 | print_imsm_dev(__get_imsm_dev(mpb, i), super->disks->index); |
cdddbdbc DW |
611 | for (i = 0; i < mpb->num_disks; i++) { |
612 | if (i == super->disks->index) | |
613 | continue; | |
14e8215b | 614 | print_imsm_disk(mpb, i, reserved); |
cdddbdbc DW |
615 | } |
616 | } | |
617 | ||
ff54de6e N |
618 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info); |
619 | ||
cdddbdbc DW |
620 | static void brief_examine_super_imsm(struct supertype *st) |
621 | { | |
27fd6274 | 622 | /* We just write a generic IMSM ARRAY entry */ |
ff54de6e N |
623 | struct mdinfo info; |
624 | char nbuf[64]; | |
625 | ||
626 | getinfo_super_imsm(st, &info); | |
627 | fname_from_uuid(st, &info, nbuf,'-'); | |
27fd6274 | 628 | printf("ARRAY /dev/imsm metadata=imsm auto=md UUID=%s\n", nbuf + 5); |
cdddbdbc DW |
629 | } |
630 | ||
631 | static void detail_super_imsm(struct supertype *st, char *homehost) | |
632 | { | |
633 | printf("%s\n", __FUNCTION__); | |
634 | } | |
635 | ||
636 | static void brief_detail_super_imsm(struct supertype *st) | |
637 | { | |
ff54de6e N |
638 | struct mdinfo info; |
639 | char nbuf[64]; | |
640 | getinfo_super_imsm(st, &info); | |
641 | fname_from_uuid(st, &info, nbuf,'-'); | |
642 | printf(" UUID=%s", nbuf + 5); | |
cdddbdbc DW |
643 | } |
644 | #endif | |
645 | ||
646 | static int match_home_imsm(struct supertype *st, char *homehost) | |
647 | { | |
648 | printf("%s\n", __FUNCTION__); | |
649 | ||
9362c1c8 | 650 | return -1; |
cdddbdbc DW |
651 | } |
652 | ||
653 | static void uuid_from_super_imsm(struct supertype *st, int uuid[4]) | |
654 | { | |
51006d85 N |
655 | /* The uuid returned here is used for: |
656 | * uuid to put into bitmap file (Create, Grow) | |
657 | * uuid for backup header when saving critical section (Grow) | |
658 | * comparing uuids when re-adding a device into an array | |
659 | * In these cases the uuid required is that of the data-array, | |
660 | * not the device-set. | |
661 | * uuid to recognise same set when adding a missing device back | |
662 | * to an array. This is a uuid for the device-set. | |
663 | * | |
664 | * For each of these we can make do with a truncated | |
665 | * or hashed uuid rather than the original, as long as | |
666 | * everyone agrees. | |
667 | * In each case the uuid required is that of the data-array, | |
668 | * not the device-set. | |
43dad3d6 | 669 | */ |
51006d85 N |
670 | /* imsm does not track uuid's so we synthesis one using sha1 on |
671 | * - The signature (Which is constant for all imsm array, but no matter) | |
672 | * - the family_num of the container | |
673 | * - the index number of the volume | |
674 | * - the 'serial' number of the volume. | |
675 | * Hopefully these are all constant. | |
676 | */ | |
677 | struct intel_super *super = st->sb; | |
43dad3d6 | 678 | |
51006d85 N |
679 | char buf[20]; |
680 | struct sha1_ctx ctx; | |
681 | struct imsm_dev *dev = NULL; | |
682 | ||
683 | sha1_init_ctx(&ctx); | |
684 | sha1_process_bytes(super->anchor->sig, MAX_SIGNATURE_LENGTH, &ctx); | |
685 | sha1_process_bytes(&super->anchor->family_num, sizeof(__u32), &ctx); | |
686 | if (super->current_vol >= 0) | |
687 | dev = get_imsm_dev(super, super->current_vol); | |
688 | if (dev) { | |
689 | __u32 vol = super->current_vol; | |
690 | sha1_process_bytes(&vol, sizeof(vol), &ctx); | |
691 | sha1_process_bytes(dev->volume, MAX_RAID_SERIAL_LEN, &ctx); | |
692 | } | |
693 | sha1_finish_ctx(&ctx, buf); | |
694 | memcpy(uuid, buf, 4*4); | |
cdddbdbc DW |
695 | } |
696 | ||
0d481d37 | 697 | #if 0 |
4f5bc454 DW |
698 | static void |
699 | get_imsm_numerical_version(struct imsm_super *mpb, int *m, int *p) | |
cdddbdbc | 700 | { |
cdddbdbc DW |
701 | __u8 *v = get_imsm_version(mpb); |
702 | __u8 *end = mpb->sig + MAX_SIGNATURE_LENGTH; | |
703 | char major[] = { 0, 0, 0 }; | |
704 | char minor[] = { 0 ,0, 0 }; | |
705 | char patch[] = { 0, 0, 0 }; | |
706 | char *ver_parse[] = { major, minor, patch }; | |
707 | int i, j; | |
708 | ||
709 | i = j = 0; | |
710 | while (*v != '\0' && v < end) { | |
711 | if (*v != '.' && j < 2) | |
712 | ver_parse[i][j++] = *v; | |
713 | else { | |
714 | i++; | |
715 | j = 0; | |
716 | } | |
717 | v++; | |
718 | } | |
719 | ||
4f5bc454 DW |
720 | *m = strtol(minor, NULL, 0); |
721 | *p = strtol(patch, NULL, 0); | |
722 | } | |
0d481d37 | 723 | #endif |
4f5bc454 | 724 | |
c2c087e6 DW |
725 | static int imsm_level_to_layout(int level) |
726 | { | |
727 | switch (level) { | |
728 | case 0: | |
729 | case 1: | |
730 | return 0; | |
731 | case 5: | |
732 | case 6: | |
a380c027 | 733 | return ALGORITHM_LEFT_ASYMMETRIC; |
c2c087e6 | 734 | case 10: |
c92a2527 | 735 | return 0x102; |
c2c087e6 DW |
736 | } |
737 | return -1; | |
738 | } | |
739 | ||
bf5a934a DW |
740 | static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info) |
741 | { | |
742 | struct intel_super *super = st->sb; | |
949c47a0 | 743 | struct imsm_dev *dev = get_imsm_dev(super, super->current_vol); |
a965f303 | 744 | struct imsm_map *map = get_imsm_map(dev, 0); |
bf5a934a DW |
745 | |
746 | info->container_member = super->current_vol; | |
747 | info->array.raid_disks = map->num_members; | |
748 | info->array.level = get_imsm_raid_level(map); | |
749 | info->array.layout = imsm_level_to_layout(info->array.level); | |
750 | info->array.md_minor = -1; | |
751 | info->array.ctime = 0; | |
752 | info->array.utime = 0; | |
301406c9 DW |
753 | info->array.chunk_size = __le16_to_cpu(map->blocks_per_strip) << 9; |
754 | info->array.state = !dev->vol.dirty; | |
755 | ||
756 | info->disk.major = 0; | |
757 | info->disk.minor = 0; | |
bf5a934a DW |
758 | |
759 | info->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
760 | info->component_size = __le32_to_cpu(map->blocks_per_member); | |
301406c9 | 761 | memset(info->uuid, 0, sizeof(info->uuid)); |
bf5a934a | 762 | |
f8f603f1 | 763 | if (map->map_state == IMSM_T_STATE_UNINITIALIZED || dev->vol.dirty) |
301406c9 | 764 | info->resync_start = 0; |
f8f603f1 DW |
765 | else if (dev->vol.migr_state) |
766 | info->resync_start = __le32_to_cpu(dev->vol.curr_migr_unit); | |
301406c9 DW |
767 | else |
768 | info->resync_start = ~0ULL; | |
769 | ||
770 | strncpy(info->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN); | |
771 | info->name[MAX_RAID_SERIAL_LEN] = 0; | |
bf5a934a | 772 | |
f35f2525 N |
773 | info->array.major_version = -1; |
774 | info->array.minor_version = -2; | |
bf5a934a DW |
775 | sprintf(info->text_version, "/%s/%d", |
776 | devnum2devname(st->container_dev), | |
777 | info->container_member); | |
a67dd8cc | 778 | info->safe_mode_delay = 4000; /* 4 secs like the Matrix driver */ |
51006d85 | 779 | uuid_from_super_imsm(st, info->uuid); |
bf5a934a DW |
780 | } |
781 | ||
782 | ||
4f5bc454 DW |
783 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info) |
784 | { | |
785 | struct intel_super *super = st->sb; | |
4f5bc454 DW |
786 | struct imsm_disk *disk; |
787 | __u32 s; | |
4f5bc454 | 788 | |
bf5a934a DW |
789 | if (super->current_vol >= 0) { |
790 | getinfo_super_imsm_volume(st, info); | |
791 | return; | |
792 | } | |
d23fe947 DW |
793 | |
794 | /* Set raid_disks to zero so that Assemble will always pull in valid | |
795 | * spares | |
796 | */ | |
797 | info->array.raid_disks = 0; | |
cdddbdbc DW |
798 | info->array.level = LEVEL_CONTAINER; |
799 | info->array.layout = 0; | |
800 | info->array.md_minor = -1; | |
c2c087e6 | 801 | info->array.ctime = 0; /* N/A for imsm */ |
cdddbdbc DW |
802 | info->array.utime = 0; |
803 | info->array.chunk_size = 0; | |
804 | ||
805 | info->disk.major = 0; | |
806 | info->disk.minor = 0; | |
cdddbdbc | 807 | info->disk.raid_disk = -1; |
c2c087e6 | 808 | info->reshape_active = 0; |
f35f2525 N |
809 | info->array.major_version = -1; |
810 | info->array.minor_version = -2; | |
c2c087e6 | 811 | strcpy(info->text_version, "imsm"); |
a67dd8cc | 812 | info->safe_mode_delay = 0; |
c2c087e6 DW |
813 | info->disk.number = -1; |
814 | info->disk.state = 0; | |
c5afc314 | 815 | info->name[0] = 0; |
c2c087e6 | 816 | |
4a04ec6c | 817 | if (super->disks) { |
14e8215b DW |
818 | __u32 reserved = imsm_reserved_sectors(super, super->disks); |
819 | ||
b9f594fe | 820 | disk = &super->disks->disk; |
14e8215b DW |
821 | info->data_offset = __le32_to_cpu(disk->total_blocks) - reserved; |
822 | info->component_size = reserved; | |
4a04ec6c DW |
823 | s = __le32_to_cpu(disk->status); |
824 | info->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0; | |
825 | info->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0; | |
032e9e29 | 826 | info->disk.state |= s & SPARE_DISK ? 0 : (1 << MD_DISK_SYNC); |
cdddbdbc | 827 | } |
032e9e29 | 828 | if (info->disk.state & (1 << MD_DISK_SYNC)) |
36ba7d48 | 829 | uuid_from_super_imsm(st, info->uuid); |
032e9e29 DW |
830 | else |
831 | memcpy(info->uuid, uuid_match_any, sizeof(int[4])); | |
cdddbdbc DW |
832 | } |
833 | ||
cdddbdbc DW |
834 | static int update_super_imsm(struct supertype *st, struct mdinfo *info, |
835 | char *update, char *devname, int verbose, | |
836 | int uuid_set, char *homehost) | |
837 | { | |
f352c545 DW |
838 | /* FIXME */ |
839 | ||
840 | /* For 'assemble' and 'force' we need to return non-zero if any | |
841 | * change was made. For others, the return value is ignored. | |
842 | * Update options are: | |
843 | * force-one : This device looks a bit old but needs to be included, | |
844 | * update age info appropriately. | |
845 | * assemble: clear any 'faulty' flag to allow this device to | |
846 | * be assembled. | |
847 | * force-array: Array is degraded but being forced, mark it clean | |
848 | * if that will be needed to assemble it. | |
849 | * | |
850 | * newdev: not used ???? | |
851 | * grow: Array has gained a new device - this is currently for | |
852 | * linear only | |
853 | * resync: mark as dirty so a resync will happen. | |
854 | * name: update the name - preserving the homehost | |
855 | * | |
856 | * Following are not relevant for this imsm: | |
857 | * sparc2.2 : update from old dodgey metadata | |
858 | * super-minor: change the preferred_minor number | |
859 | * summaries: update redundant counters. | |
860 | * uuid: Change the uuid of the array to match watch is given | |
861 | * homehost: update the recorded homehost | |
862 | * _reshape_progress: record new reshape_progress position. | |
863 | */ | |
864 | int rv = 0; | |
865 | //struct intel_super *super = st->sb; | |
866 | //struct imsm_super *mpb = super->mpb; | |
867 | ||
868 | if (strcmp(update, "grow") == 0) { | |
869 | } | |
870 | if (strcmp(update, "resync") == 0) { | |
871 | /* dev->vol.dirty = 1; */ | |
872 | } | |
873 | ||
874 | /* IMSM has no concept of UUID or homehost */ | |
875 | ||
876 | return rv; | |
cdddbdbc DW |
877 | } |
878 | ||
c2c087e6 | 879 | static size_t disks_to_mpb_size(int disks) |
cdddbdbc | 880 | { |
c2c087e6 | 881 | size_t size; |
cdddbdbc | 882 | |
c2c087e6 DW |
883 | size = sizeof(struct imsm_super); |
884 | size += (disks - 1) * sizeof(struct imsm_disk); | |
885 | size += 2 * sizeof(struct imsm_dev); | |
886 | /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */ | |
887 | size += (4 - 2) * sizeof(struct imsm_map); | |
888 | /* 4 possible disk_ord_tbl's */ | |
889 | size += 4 * (disks - 1) * sizeof(__u32); | |
890 | ||
891 | return size; | |
892 | } | |
893 | ||
894 | static __u64 avail_size_imsm(struct supertype *st, __u64 devsize) | |
895 | { | |
896 | if (devsize < (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS)) | |
897 | return 0; | |
898 | ||
899 | return devsize - (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
cdddbdbc DW |
900 | } |
901 | ||
902 | static int compare_super_imsm(struct supertype *st, struct supertype *tst) | |
903 | { | |
904 | /* | |
905 | * return: | |
906 | * 0 same, or first was empty, and second was copied | |
907 | * 1 second had wrong number | |
908 | * 2 wrong uuid | |
909 | * 3 wrong other info | |
910 | */ | |
911 | struct intel_super *first = st->sb; | |
912 | struct intel_super *sec = tst->sb; | |
913 | ||
914 | if (!first) { | |
915 | st->sb = tst->sb; | |
916 | tst->sb = NULL; | |
917 | return 0; | |
918 | } | |
919 | ||
949c47a0 | 920 | if (memcmp(first->anchor->sig, sec->anchor->sig, MAX_SIGNATURE_LENGTH) != 0) |
cdddbdbc | 921 | return 3; |
d23fe947 DW |
922 | |
923 | /* if an anchor does not have num_raid_devs set then it is a free | |
924 | * floating spare | |
925 | */ | |
926 | if (first->anchor->num_raid_devs > 0 && | |
927 | sec->anchor->num_raid_devs > 0) { | |
928 | if (first->anchor->family_num != sec->anchor->family_num) | |
929 | return 3; | |
d23fe947 | 930 | } |
cdddbdbc | 931 | |
3e372e5a DW |
932 | /* if 'first' is a spare promote it to a populated mpb with sec's |
933 | * family number | |
934 | */ | |
935 | if (first->anchor->num_raid_devs == 0 && | |
936 | sec->anchor->num_raid_devs > 0) { | |
937 | first->anchor->num_raid_devs = sec->anchor->num_raid_devs; | |
938 | first->anchor->family_num = sec->anchor->family_num; | |
939 | } | |
940 | ||
cdddbdbc DW |
941 | return 0; |
942 | } | |
943 | ||
0030e8d6 DW |
944 | static void fd2devname(int fd, char *name) |
945 | { | |
946 | struct stat st; | |
947 | char path[256]; | |
948 | char dname[100]; | |
949 | char *nm; | |
950 | int rv; | |
951 | ||
952 | name[0] = '\0'; | |
953 | if (fstat(fd, &st) != 0) | |
954 | return; | |
955 | sprintf(path, "/sys/dev/block/%d:%d", | |
956 | major(st.st_rdev), minor(st.st_rdev)); | |
957 | ||
958 | rv = readlink(path, dname, sizeof(dname)); | |
959 | if (rv <= 0) | |
960 | return; | |
961 | ||
962 | dname[rv] = '\0'; | |
963 | nm = strrchr(dname, '/'); | |
964 | nm++; | |
965 | snprintf(name, MAX_RAID_SERIAL_LEN, "/dev/%s", nm); | |
966 | } | |
967 | ||
968 | ||
cdddbdbc DW |
969 | extern int scsi_get_serial(int fd, void *buf, size_t buf_len); |
970 | ||
971 | static int imsm_read_serial(int fd, char *devname, | |
972 | __u8 serial[MAX_RAID_SERIAL_LEN]) | |
973 | { | |
974 | unsigned char scsi_serial[255]; | |
cdddbdbc DW |
975 | int rv; |
976 | int rsp_len; | |
1f24f035 DW |
977 | int len; |
978 | char *c, *rsp_buf; | |
cdddbdbc DW |
979 | |
980 | memset(scsi_serial, 0, sizeof(scsi_serial)); | |
cdddbdbc | 981 | |
f9ba0ff1 DW |
982 | rv = scsi_get_serial(fd, scsi_serial, sizeof(scsi_serial)); |
983 | ||
984 | if (rv && imsm_env_devname_as_serial()) { | |
985 | memset(serial, 0, MAX_RAID_SERIAL_LEN); | |
986 | fd2devname(fd, (char *) serial); | |
0030e8d6 DW |
987 | return 0; |
988 | } | |
989 | ||
cdddbdbc DW |
990 | if (rv != 0) { |
991 | if (devname) | |
992 | fprintf(stderr, | |
993 | Name ": Failed to retrieve serial for %s\n", | |
994 | devname); | |
995 | return rv; | |
996 | } | |
997 | ||
5c3db629 | 998 | /* trim leading whitespace */ |
cdddbdbc | 999 | rsp_len = scsi_serial[3]; |
1f24f035 DW |
1000 | rsp_buf = (char *) &scsi_serial[4]; |
1001 | c = rsp_buf; | |
1002 | while (isspace(*c)) | |
1003 | c++; | |
5c3db629 DW |
1004 | |
1005 | /* truncate len to the end of rsp_buf if necessary */ | |
1f24f035 DW |
1006 | if (c + MAX_RAID_SERIAL_LEN > rsp_buf + rsp_len) |
1007 | len = rsp_len - (c - rsp_buf); | |
1008 | else | |
1009 | len = MAX_RAID_SERIAL_LEN; | |
5c3db629 DW |
1010 | |
1011 | /* initialize the buffer and copy rsp_buf characters */ | |
1012 | memset(serial, 0, MAX_RAID_SERIAL_LEN); | |
1f24f035 | 1013 | memcpy(serial, c, len); |
5c3db629 DW |
1014 | |
1015 | /* trim trailing whitespace starting with the last character copied */ | |
1f24f035 DW |
1016 | c = (char *) &serial[len - 1]; |
1017 | while (isspace(*c) || *c == '\0') | |
1018 | *c-- = '\0'; | |
cdddbdbc DW |
1019 | |
1020 | return 0; | |
1021 | } | |
1022 | ||
1f24f035 DW |
1023 | static int serialcmp(__u8 *s1, __u8 *s2) |
1024 | { | |
1025 | return strncmp((char *) s1, (char *) s2, MAX_RAID_SERIAL_LEN); | |
1026 | } | |
1027 | ||
1028 | static void serialcpy(__u8 *dest, __u8 *src) | |
1029 | { | |
1030 | strncpy((char *) dest, (char *) src, MAX_RAID_SERIAL_LEN); | |
1031 | } | |
1032 | ||
cdddbdbc DW |
1033 | static int |
1034 | load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd) | |
1035 | { | |
cdddbdbc DW |
1036 | struct dl *dl; |
1037 | struct stat stb; | |
cdddbdbc DW |
1038 | int rv; |
1039 | int i; | |
d23fe947 DW |
1040 | int alloc = 1; |
1041 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
1042 | ||
1043 | rv = imsm_read_serial(fd, devname, serial); | |
1044 | ||
1045 | if (rv != 0) | |
1046 | return 2; | |
1047 | ||
1048 | /* check if this is a disk we have seen before. it may be a spare in | |
1049 | * super->disks while the current anchor believes it is a raid member, | |
1050 | * check if we need to update dl->index | |
1051 | */ | |
1052 | for (dl = super->disks; dl; dl = dl->next) | |
1f24f035 | 1053 | if (serialcmp(dl->serial, serial) == 0) |
d23fe947 DW |
1054 | break; |
1055 | ||
1056 | if (!dl) | |
1057 | dl = malloc(sizeof(*dl)); | |
1058 | else | |
1059 | alloc = 0; | |
cdddbdbc | 1060 | |
b9f594fe | 1061 | if (!dl) { |
cdddbdbc DW |
1062 | if (devname) |
1063 | fprintf(stderr, | |
1064 | Name ": failed to allocate disk buffer for %s\n", | |
1065 | devname); | |
1066 | return 2; | |
1067 | } | |
cdddbdbc | 1068 | |
d23fe947 DW |
1069 | if (alloc) { |
1070 | fstat(fd, &stb); | |
1071 | dl->major = major(stb.st_rdev); | |
1072 | dl->minor = minor(stb.st_rdev); | |
1073 | dl->next = super->disks; | |
1074 | dl->fd = keep_fd ? fd : -1; | |
1075 | dl->devname = devname ? strdup(devname) : NULL; | |
1f24f035 | 1076 | serialcpy(dl->serial, serial); |
8796fdc4 | 1077 | dl->index = -2; |
d23fe947 DW |
1078 | } else if (keep_fd) { |
1079 | close(dl->fd); | |
1080 | dl->fd = fd; | |
1081 | } | |
cdddbdbc | 1082 | |
d23fe947 | 1083 | /* look up this disk's index in the current anchor */ |
949c47a0 DW |
1084 | for (i = 0; i < super->anchor->num_disks; i++) { |
1085 | struct imsm_disk *disk_iter; | |
1086 | ||
1087 | disk_iter = __get_imsm_disk(super->anchor, i); | |
cdddbdbc | 1088 | |
1f24f035 | 1089 | if (serialcmp(disk_iter->serial, dl->serial) == 0) { |
d23fe947 DW |
1090 | __u32 status; |
1091 | ||
b9f594fe | 1092 | dl->disk = *disk_iter; |
d23fe947 DW |
1093 | status = __le32_to_cpu(dl->disk.status); |
1094 | /* only set index on disks that are a member of a | |
1095 | * populated contianer, i.e. one with raid_devs | |
1096 | */ | |
6c386dd3 DW |
1097 | if (status & FAILED_DISK) |
1098 | dl->index = -2; | |
1099 | else if (status & SPARE_DISK) | |
d23fe947 DW |
1100 | dl->index = -1; |
1101 | else | |
1102 | dl->index = i; | |
8796fdc4 | 1103 | |
cdddbdbc | 1104 | break; |
949c47a0 | 1105 | } |
cdddbdbc DW |
1106 | } |
1107 | ||
3f6efecc DW |
1108 | /* no match, maybe a stale failed drive */ |
1109 | if (i == super->anchor->num_disks && dl->index >= 0) { | |
1110 | dl->disk = *__get_imsm_disk(super->anchor, dl->index); | |
1111 | if (__le32_to_cpu(dl->disk.status) & FAILED_DISK) | |
1112 | dl->index = -2; | |
1113 | } | |
1114 | ||
d23fe947 DW |
1115 | if (alloc) |
1116 | super->disks = dl; | |
6c386dd3 | 1117 | |
949c47a0 DW |
1118 | return 0; |
1119 | } | |
1120 | ||
1121 | static void imsm_copy_dev(struct imsm_dev *dest, struct imsm_dev *src) | |
1122 | { | |
3393c6af DW |
1123 | memcpy(dest, src, sizeof_imsm_dev(src, 0)); |
1124 | } | |
1125 | ||
0e600426 | 1126 | #ifndef MDASSEMBLE |
0c046afd DW |
1127 | /* When migrating map0 contains the 'destination' state while map1 |
1128 | * contains the current state. When not migrating map0 contains the | |
1129 | * current state. This routine assumes that map[0].map_state is set to | |
1130 | * the current array state before being called. | |
1131 | * | |
1132 | * Migration is indicated by one of the following states | |
1133 | * 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed) | |
1134 | * 2/ Initialize (migr_state=1 migr_type=0 map0state=normal | |
1135 | * map1state=unitialized) | |
1136 | * 3/ Verify (Resync) (migr_state=1 migr_type=1 map0state=normal | |
1137 | * map1state=normal) | |
1138 | * 4/ Rebuild (migr_state=1 migr_type=1 map0state=normal | |
1139 | * map1state=degraded) | |
1140 | */ | |
1141 | static void migrate(struct imsm_dev *dev, __u8 to_state, int rebuild_resync) | |
3393c6af | 1142 | { |
0c046afd | 1143 | struct imsm_map *dest; |
3393c6af DW |
1144 | struct imsm_map *src = get_imsm_map(dev, 0); |
1145 | ||
0c046afd DW |
1146 | dev->vol.migr_state = 1; |
1147 | dev->vol.migr_type = rebuild_resync; | |
f8f603f1 | 1148 | dev->vol.curr_migr_unit = 0; |
0c046afd DW |
1149 | dest = get_imsm_map(dev, 1); |
1150 | ||
3393c6af | 1151 | memcpy(dest, src, sizeof_imsm_map(src)); |
0c046afd | 1152 | src->map_state = to_state; |
949c47a0 | 1153 | } |
f8f603f1 DW |
1154 | |
1155 | static void end_migration(struct imsm_dev *dev, __u8 map_state) | |
1156 | { | |
1157 | struct imsm_map *map = get_imsm_map(dev, 0); | |
1158 | ||
1159 | dev->vol.migr_state = 0; | |
1160 | dev->vol.curr_migr_unit = 0; | |
1161 | map->map_state = map_state; | |
1162 | } | |
0e600426 | 1163 | #endif |
949c47a0 DW |
1164 | |
1165 | static int parse_raid_devices(struct intel_super *super) | |
1166 | { | |
1167 | int i; | |
1168 | struct imsm_dev *dev_new; | |
4d7b1503 DW |
1169 | size_t len, len_migr; |
1170 | size_t space_needed = 0; | |
1171 | struct imsm_super *mpb = super->anchor; | |
949c47a0 DW |
1172 | |
1173 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
1174 | struct imsm_dev *dev_iter = __get_imsm_dev(super->anchor, i); | |
1175 | ||
4d7b1503 DW |
1176 | len = sizeof_imsm_dev(dev_iter, 0); |
1177 | len_migr = sizeof_imsm_dev(dev_iter, 1); | |
1178 | if (len_migr > len) | |
1179 | space_needed += len_migr - len; | |
1180 | ||
1181 | dev_new = malloc(len_migr); | |
949c47a0 DW |
1182 | if (!dev_new) |
1183 | return 1; | |
1184 | imsm_copy_dev(dev_new, dev_iter); | |
1185 | super->dev_tbl[i] = dev_new; | |
1186 | } | |
cdddbdbc | 1187 | |
4d7b1503 DW |
1188 | /* ensure that super->buf is large enough when all raid devices |
1189 | * are migrating | |
1190 | */ | |
1191 | if (__le32_to_cpu(mpb->mpb_size) + space_needed > super->len) { | |
1192 | void *buf; | |
1193 | ||
1194 | len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + space_needed, 512); | |
1195 | if (posix_memalign(&buf, 512, len) != 0) | |
1196 | return 1; | |
1197 | ||
1198 | memcpy(buf, super->buf, len); | |
1199 | free(super->buf); | |
1200 | super->buf = buf; | |
1201 | super->len = len; | |
1202 | } | |
1203 | ||
cdddbdbc DW |
1204 | return 0; |
1205 | } | |
1206 | ||
604b746f JD |
1207 | /* retrieve a pointer to the bbm log which starts after all raid devices */ |
1208 | struct bbm_log *__get_imsm_bbm_log(struct imsm_super *mpb) | |
1209 | { | |
1210 | void *ptr = NULL; | |
1211 | ||
1212 | if (__le32_to_cpu(mpb->bbm_log_size)) { | |
1213 | ptr = mpb; | |
1214 | ptr += mpb->mpb_size - __le32_to_cpu(mpb->bbm_log_size); | |
1215 | } | |
1216 | ||
1217 | return ptr; | |
1218 | } | |
1219 | ||
d23fe947 | 1220 | static void __free_imsm(struct intel_super *super, int free_disks); |
9ca2c81c | 1221 | |
cdddbdbc DW |
1222 | /* load_imsm_mpb - read matrix metadata |
1223 | * allocates super->mpb to be freed by free_super | |
1224 | */ | |
1225 | static int load_imsm_mpb(int fd, struct intel_super *super, char *devname) | |
1226 | { | |
1227 | unsigned long long dsize; | |
cdddbdbc DW |
1228 | unsigned long long sectors; |
1229 | struct stat; | |
6416d527 | 1230 | struct imsm_super *anchor; |
cdddbdbc | 1231 | __u32 check_sum; |
949c47a0 | 1232 | int rc; |
cdddbdbc | 1233 | |
cdddbdbc DW |
1234 | get_dev_size(fd, NULL, &dsize); |
1235 | ||
1236 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) { | |
1237 | if (devname) | |
1238 | fprintf(stderr, | |
1239 | Name ": Cannot seek to anchor block on %s: %s\n", | |
1240 | devname, strerror(errno)); | |
1241 | return 1; | |
1242 | } | |
1243 | ||
949c47a0 | 1244 | if (posix_memalign((void**)&anchor, 512, 512) != 0) { |
ad97895e DW |
1245 | if (devname) |
1246 | fprintf(stderr, | |
1247 | Name ": Failed to allocate imsm anchor buffer" | |
1248 | " on %s\n", devname); | |
1249 | return 1; | |
1250 | } | |
949c47a0 | 1251 | if (read(fd, anchor, 512) != 512) { |
cdddbdbc DW |
1252 | if (devname) |
1253 | fprintf(stderr, | |
1254 | Name ": Cannot read anchor block on %s: %s\n", | |
1255 | devname, strerror(errno)); | |
6416d527 | 1256 | free(anchor); |
cdddbdbc DW |
1257 | return 1; |
1258 | } | |
1259 | ||
6416d527 | 1260 | if (strncmp((char *) anchor->sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) { |
cdddbdbc DW |
1261 | if (devname) |
1262 | fprintf(stderr, | |
1263 | Name ": no IMSM anchor on %s\n", devname); | |
6416d527 | 1264 | free(anchor); |
cdddbdbc DW |
1265 | return 2; |
1266 | } | |
1267 | ||
d23fe947 | 1268 | __free_imsm(super, 0); |
949c47a0 DW |
1269 | super->len = ROUND_UP(anchor->mpb_size, 512); |
1270 | if (posix_memalign(&super->buf, 512, super->len) != 0) { | |
cdddbdbc DW |
1271 | if (devname) |
1272 | fprintf(stderr, | |
1273 | Name ": unable to allocate %zu byte mpb buffer\n", | |
949c47a0 | 1274 | super->len); |
6416d527 | 1275 | free(anchor); |
cdddbdbc DW |
1276 | return 2; |
1277 | } | |
949c47a0 | 1278 | memcpy(super->buf, anchor, 512); |
cdddbdbc | 1279 | |
6416d527 NB |
1280 | sectors = mpb_sectors(anchor) - 1; |
1281 | free(anchor); | |
949c47a0 DW |
1282 | if (!sectors) { |
1283 | rc = load_imsm_disk(fd, super, devname, 0); | |
1284 | if (rc == 0) | |
1285 | rc = parse_raid_devices(super); | |
1286 | return rc; | |
1287 | } | |
cdddbdbc DW |
1288 | |
1289 | /* read the extended mpb */ | |
1290 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) { | |
1291 | if (devname) | |
1292 | fprintf(stderr, | |
1293 | Name ": Cannot seek to extended mpb on %s: %s\n", | |
1294 | devname, strerror(errno)); | |
1295 | return 1; | |
1296 | } | |
1297 | ||
949c47a0 | 1298 | if (read(fd, super->buf + 512, super->len - 512) != super->len - 512) { |
cdddbdbc DW |
1299 | if (devname) |
1300 | fprintf(stderr, | |
1301 | Name ": Cannot read extended mpb on %s: %s\n", | |
1302 | devname, strerror(errno)); | |
1303 | return 2; | |
1304 | } | |
1305 | ||
949c47a0 DW |
1306 | check_sum = __gen_imsm_checksum(super->anchor); |
1307 | if (check_sum != __le32_to_cpu(super->anchor->check_sum)) { | |
cdddbdbc DW |
1308 | if (devname) |
1309 | fprintf(stderr, | |
1310 | Name ": IMSM checksum %x != %x on %s\n", | |
949c47a0 | 1311 | check_sum, __le32_to_cpu(super->anchor->check_sum), |
cdddbdbc DW |
1312 | devname); |
1313 | return 2; | |
1314 | } | |
1315 | ||
604b746f JD |
1316 | /* FIXME the BBM log is disk specific so we cannot use this global |
1317 | * buffer for all disks. Ok for now since we only look at the global | |
1318 | * bbm_log_size parameter to gate assembly | |
1319 | */ | |
1320 | super->bbm_log = __get_imsm_bbm_log(super->anchor); | |
1321 | ||
949c47a0 DW |
1322 | rc = load_imsm_disk(fd, super, devname, 0); |
1323 | if (rc == 0) | |
1324 | rc = parse_raid_devices(super); | |
4d7b1503 | 1325 | |
949c47a0 | 1326 | return rc; |
cdddbdbc DW |
1327 | } |
1328 | ||
ae6aad82 DW |
1329 | static void __free_imsm_disk(struct dl *d) |
1330 | { | |
1331 | if (d->fd >= 0) | |
1332 | close(d->fd); | |
1333 | if (d->devname) | |
1334 | free(d->devname); | |
1335 | free(d); | |
1336 | ||
1337 | } | |
cdddbdbc DW |
1338 | static void free_imsm_disks(struct intel_super *super) |
1339 | { | |
47ee5a45 | 1340 | struct dl *d; |
cdddbdbc | 1341 | |
47ee5a45 DW |
1342 | while (super->disks) { |
1343 | d = super->disks; | |
cdddbdbc | 1344 | super->disks = d->next; |
ae6aad82 | 1345 | __free_imsm_disk(d); |
cdddbdbc | 1346 | } |
47ee5a45 DW |
1347 | while (super->missing) { |
1348 | d = super->missing; | |
1349 | super->missing = d->next; | |
1350 | __free_imsm_disk(d); | |
1351 | } | |
1352 | ||
cdddbdbc DW |
1353 | } |
1354 | ||
9ca2c81c | 1355 | /* free all the pieces hanging off of a super pointer */ |
d23fe947 | 1356 | static void __free_imsm(struct intel_super *super, int free_disks) |
cdddbdbc | 1357 | { |
949c47a0 DW |
1358 | int i; |
1359 | ||
9ca2c81c | 1360 | if (super->buf) { |
949c47a0 | 1361 | free(super->buf); |
9ca2c81c DW |
1362 | super->buf = NULL; |
1363 | } | |
d23fe947 DW |
1364 | if (free_disks) |
1365 | free_imsm_disks(super); | |
949c47a0 | 1366 | for (i = 0; i < IMSM_MAX_RAID_DEVS; i++) |
9ca2c81c | 1367 | if (super->dev_tbl[i]) { |
949c47a0 | 1368 | free(super->dev_tbl[i]); |
9ca2c81c DW |
1369 | super->dev_tbl[i] = NULL; |
1370 | } | |
cdddbdbc DW |
1371 | } |
1372 | ||
9ca2c81c DW |
1373 | static void free_imsm(struct intel_super *super) |
1374 | { | |
d23fe947 | 1375 | __free_imsm(super, 1); |
9ca2c81c DW |
1376 | free(super); |
1377 | } | |
cdddbdbc DW |
1378 | |
1379 | static void free_super_imsm(struct supertype *st) | |
1380 | { | |
1381 | struct intel_super *super = st->sb; | |
1382 | ||
1383 | if (!super) | |
1384 | return; | |
1385 | ||
1386 | free_imsm(super); | |
1387 | st->sb = NULL; | |
1388 | } | |
1389 | ||
c2c087e6 DW |
1390 | static struct intel_super *alloc_super(int creating_imsm) |
1391 | { | |
1392 | struct intel_super *super = malloc(sizeof(*super)); | |
1393 | ||
1394 | if (super) { | |
1395 | memset(super, 0, sizeof(*super)); | |
1396 | super->creating_imsm = creating_imsm; | |
bf5a934a | 1397 | super->current_vol = -1; |
c2c087e6 DW |
1398 | } |
1399 | ||
1400 | return super; | |
1401 | } | |
1402 | ||
cdddbdbc | 1403 | #ifndef MDASSEMBLE |
47ee5a45 DW |
1404 | /* find_missing - helper routine for load_super_imsm_all that identifies |
1405 | * disks that have disappeared from the system. This routine relies on | |
1406 | * the mpb being uptodate, which it is at load time. | |
1407 | */ | |
1408 | static int find_missing(struct intel_super *super) | |
1409 | { | |
1410 | int i; | |
1411 | struct imsm_super *mpb = super->anchor; | |
1412 | struct dl *dl; | |
1413 | struct imsm_disk *disk; | |
1414 | __u32 status; | |
1415 | ||
1416 | for (i = 0; i < mpb->num_disks; i++) { | |
1417 | disk = __get_imsm_disk(mpb, i); | |
1418 | for (dl = super->disks; dl; dl = dl->next) | |
1419 | if (serialcmp(dl->disk.serial, disk->serial) == 0) | |
1420 | break; | |
1421 | if (dl) | |
1422 | continue; | |
1423 | /* ok we have a 'disk' without a live entry in | |
1424 | * super->disks | |
1425 | */ | |
1426 | status = __le32_to_cpu(disk->status); | |
1427 | if (status & FAILED_DISK || !(status & USABLE_DISK)) | |
1428 | continue; /* never mind, already marked */ | |
1429 | ||
1430 | dl = malloc(sizeof(*dl)); | |
1431 | if (!dl) | |
1432 | return 1; | |
1433 | dl->major = 0; | |
1434 | dl->minor = 0; | |
1435 | dl->fd = -1; | |
1436 | dl->devname = strdup("missing"); | |
1437 | dl->index = i; | |
1438 | serialcpy(dl->serial, disk->serial); | |
1439 | dl->disk = *disk; | |
1440 | dl->next = super->missing; | |
1441 | super->missing = dl; | |
1442 | } | |
1443 | ||
1444 | return 0; | |
1445 | } | |
1446 | ||
cdddbdbc DW |
1447 | static int load_super_imsm_all(struct supertype *st, int fd, void **sbp, |
1448 | char *devname, int keep_fd) | |
1449 | { | |
1450 | struct mdinfo *sra; | |
1451 | struct intel_super *super; | |
1452 | struct mdinfo *sd, *best = NULL; | |
1453 | __u32 bestgen = 0; | |
1454 | __u32 gen; | |
1455 | char nm[20]; | |
1456 | int dfd; | |
1457 | int rv; | |
1458 | ||
1459 | /* check if this disk is a member of an active array */ | |
1460 | sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE); | |
1461 | if (!sra) | |
1462 | return 1; | |
1463 | ||
1464 | if (sra->array.major_version != -1 || | |
1465 | sra->array.minor_version != -2 || | |
1466 | strcmp(sra->text_version, "imsm") != 0) | |
1467 | return 1; | |
1468 | ||
c2c087e6 | 1469 | super = alloc_super(0); |
cdddbdbc DW |
1470 | if (!super) |
1471 | return 1; | |
1472 | ||
d23fe947 | 1473 | /* find the most up to date disk in this array, skipping spares */ |
cdddbdbc DW |
1474 | for (sd = sra->devs; sd; sd = sd->next) { |
1475 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
1476 | dfd = dev_open(nm, keep_fd ? O_RDWR : O_RDONLY); | |
1477 | if (!dfd) { | |
1478 | free_imsm(super); | |
1479 | return 2; | |
1480 | } | |
1481 | rv = load_imsm_mpb(dfd, super, NULL); | |
1482 | if (!keep_fd) | |
1483 | close(dfd); | |
1484 | if (rv == 0) { | |
d23fe947 DW |
1485 | if (super->anchor->num_raid_devs == 0) |
1486 | gen = 0; | |
1487 | else | |
1488 | gen = __le32_to_cpu(super->anchor->generation_num); | |
cdddbdbc DW |
1489 | if (!best || gen > bestgen) { |
1490 | bestgen = gen; | |
1491 | best = sd; | |
1492 | } | |
1493 | } else { | |
1494 | free_imsm(super); | |
1495 | return 2; | |
1496 | } | |
1497 | } | |
1498 | ||
1499 | if (!best) { | |
1500 | free_imsm(super); | |
1501 | return 1; | |
1502 | } | |
1503 | ||
1504 | /* load the most up to date anchor */ | |
1505 | sprintf(nm, "%d:%d", best->disk.major, best->disk.minor); | |
1506 | dfd = dev_open(nm, O_RDONLY); | |
1507 | if (!dfd) { | |
1508 | free_imsm(super); | |
1509 | return 1; | |
1510 | } | |
1511 | rv = load_imsm_mpb(dfd, super, NULL); | |
1512 | close(dfd); | |
1513 | if (rv != 0) { | |
1514 | free_imsm(super); | |
1515 | return 2; | |
1516 | } | |
1517 | ||
d23fe947 | 1518 | /* re-parse the disk list with the current anchor */ |
cdddbdbc DW |
1519 | for (sd = sra->devs ; sd ; sd = sd->next) { |
1520 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
1521 | dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY); | |
1522 | if (!dfd) { | |
1523 | free_imsm(super); | |
1524 | return 2; | |
1525 | } | |
1526 | load_imsm_disk(dfd, super, NULL, keep_fd); | |
1527 | if (!keep_fd) | |
1528 | close(dfd); | |
1529 | } | |
1530 | ||
47ee5a45 DW |
1531 | |
1532 | if (find_missing(super) != 0) { | |
1533 | free_imsm(super); | |
1534 | return 2; | |
1535 | } | |
1536 | ||
f7e7067b | 1537 | if (st->subarray[0]) { |
949c47a0 | 1538 | if (atoi(st->subarray) <= super->anchor->num_raid_devs) |
bf5a934a DW |
1539 | super->current_vol = atoi(st->subarray); |
1540 | else | |
1541 | return 1; | |
f7e7067b NB |
1542 | } |
1543 | ||
cdddbdbc | 1544 | *sbp = super; |
43dad3d6 | 1545 | st->container_dev = fd2devnum(fd); |
cdddbdbc | 1546 | if (st->ss == NULL) { |
bf5a934a | 1547 | st->ss = &super_imsm; |
cdddbdbc DW |
1548 | st->minor_version = 0; |
1549 | st->max_devs = IMSM_MAX_DEVICES; | |
1550 | } | |
352452c3 | 1551 | st->loaded_container = 1; |
cdddbdbc DW |
1552 | |
1553 | return 0; | |
1554 | } | |
1555 | #endif | |
1556 | ||
1557 | static int load_super_imsm(struct supertype *st, int fd, char *devname) | |
1558 | { | |
1559 | struct intel_super *super; | |
1560 | int rv; | |
1561 | ||
1562 | #ifndef MDASSEMBLE | |
3dbccbcf | 1563 | if (load_super_imsm_all(st, fd, &st->sb, devname, 1) == 0) |
cdddbdbc DW |
1564 | return 0; |
1565 | #endif | |
f7e7067b NB |
1566 | if (st->subarray[0]) |
1567 | return 1; /* FIXME */ | |
cdddbdbc | 1568 | |
c2c087e6 | 1569 | super = alloc_super(0); |
cdddbdbc DW |
1570 | if (!super) { |
1571 | fprintf(stderr, | |
1572 | Name ": malloc of %zu failed.\n", | |
1573 | sizeof(*super)); | |
1574 | return 1; | |
1575 | } | |
1576 | ||
1577 | rv = load_imsm_mpb(fd, super, devname); | |
1578 | ||
1579 | if (rv) { | |
1580 | if (devname) | |
1581 | fprintf(stderr, | |
1582 | Name ": Failed to load all information " | |
1583 | "sections on %s\n", devname); | |
1584 | free_imsm(super); | |
1585 | return rv; | |
1586 | } | |
1587 | ||
1588 | st->sb = super; | |
1589 | if (st->ss == NULL) { | |
1590 | st->ss = &super_imsm; | |
1591 | st->minor_version = 0; | |
1592 | st->max_devs = IMSM_MAX_DEVICES; | |
1593 | } | |
352452c3 | 1594 | st->loaded_container = 0; |
cdddbdbc DW |
1595 | |
1596 | return 0; | |
1597 | } | |
1598 | ||
ef6ffade DW |
1599 | static __u16 info_to_blocks_per_strip(mdu_array_info_t *info) |
1600 | { | |
1601 | if (info->level == 1) | |
1602 | return 128; | |
1603 | return info->chunk_size >> 9; | |
1604 | } | |
1605 | ||
1606 | static __u32 info_to_num_data_stripes(mdu_array_info_t *info) | |
1607 | { | |
1608 | __u32 num_stripes; | |
1609 | ||
1610 | num_stripes = (info->size * 2) / info_to_blocks_per_strip(info); | |
1611 | if (info->level == 1) | |
1612 | num_stripes /= 2; | |
1613 | ||
1614 | return num_stripes; | |
1615 | } | |
1616 | ||
fcfd9599 DW |
1617 | static __u32 info_to_blocks_per_member(mdu_array_info_t *info) |
1618 | { | |
1619 | return (info->size * 2) & ~(info_to_blocks_per_strip(info) - 1); | |
1620 | } | |
1621 | ||
8b353278 DW |
1622 | static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info, |
1623 | unsigned long long size, char *name, | |
1624 | char *homehost, int *uuid) | |
cdddbdbc | 1625 | { |
c2c087e6 DW |
1626 | /* We are creating a volume inside a pre-existing container. |
1627 | * so st->sb is already set. | |
1628 | */ | |
1629 | struct intel_super *super = st->sb; | |
949c47a0 | 1630 | struct imsm_super *mpb = super->anchor; |
c2c087e6 DW |
1631 | struct imsm_dev *dev; |
1632 | struct imsm_vol *vol; | |
1633 | struct imsm_map *map; | |
1634 | int idx = mpb->num_raid_devs; | |
1635 | int i; | |
1636 | unsigned long long array_blocks; | |
c2c087e6 | 1637 | __u32 offset = 0; |
2c092cad | 1638 | size_t size_old, size_new; |
cdddbdbc | 1639 | |
c2c087e6 DW |
1640 | if (mpb->num_raid_devs >= 2) { |
1641 | fprintf(stderr, Name": This imsm-container already has the " | |
1642 | "maximum of 2 volumes\n"); | |
1643 | return 0; | |
1644 | } | |
1645 | ||
2c092cad DW |
1646 | /* ensure the mpb is large enough for the new data */ |
1647 | size_old = __le32_to_cpu(mpb->mpb_size); | |
1648 | size_new = disks_to_mpb_size(info->nr_disks); | |
1649 | if (size_new > size_old) { | |
1650 | void *mpb_new; | |
1651 | size_t size_round = ROUND_UP(size_new, 512); | |
1652 | ||
1653 | if (posix_memalign(&mpb_new, 512, size_round) != 0) { | |
1654 | fprintf(stderr, Name": could not allocate new mpb\n"); | |
1655 | return 0; | |
1656 | } | |
1657 | memcpy(mpb_new, mpb, size_old); | |
1658 | free(mpb); | |
1659 | mpb = mpb_new; | |
949c47a0 | 1660 | super->anchor = mpb_new; |
2c092cad DW |
1661 | mpb->mpb_size = __cpu_to_le32(size_new); |
1662 | memset(mpb_new + size_old, 0, size_round - size_old); | |
1663 | } | |
bf5a934a | 1664 | super->current_vol = idx; |
d23fe947 DW |
1665 | /* when creating the first raid device in this container set num_disks |
1666 | * to zero, i.e. delete this spare and add raid member devices in | |
1667 | * add_to_super_imsm_volume() | |
1668 | */ | |
1669 | if (super->current_vol == 0) | |
1670 | mpb->num_disks = 0; | |
bf5a934a | 1671 | sprintf(st->subarray, "%d", idx); |
949c47a0 DW |
1672 | dev = malloc(sizeof(*dev) + sizeof(__u32) * (info->raid_disks - 1)); |
1673 | if (!dev) { | |
1674 | fprintf(stderr, Name": could not allocate raid device\n"); | |
1675 | return 0; | |
1676 | } | |
c2c087e6 DW |
1677 | strncpy((char *) dev->volume, name, MAX_RAID_SERIAL_LEN); |
1678 | array_blocks = calc_array_size(info->level, info->raid_disks, | |
1679 | info->layout, info->chunk_size, | |
1680 | info->size*2); | |
1681 | dev->size_low = __cpu_to_le32((__u32) array_blocks); | |
1682 | dev->size_high = __cpu_to_le32((__u32) (array_blocks >> 32)); | |
1683 | dev->status = __cpu_to_le32(0); | |
1684 | dev->reserved_blocks = __cpu_to_le32(0); | |
1685 | vol = &dev->vol; | |
1686 | vol->migr_state = 0; | |
1687 | vol->migr_type = 0; | |
1688 | vol->dirty = 0; | |
f8f603f1 | 1689 | vol->curr_migr_unit = 0; |
c2c087e6 | 1690 | for (i = 0; i < idx; i++) { |
949c47a0 | 1691 | struct imsm_dev *prev = get_imsm_dev(super, i); |
a965f303 | 1692 | struct imsm_map *pmap = get_imsm_map(prev, 0); |
c2c087e6 DW |
1693 | |
1694 | offset += __le32_to_cpu(pmap->blocks_per_member); | |
1695 | offset += IMSM_RESERVED_SECTORS; | |
1696 | } | |
a965f303 | 1697 | map = get_imsm_map(dev, 0); |
c2c087e6 | 1698 | map->pba_of_lba0 = __cpu_to_le32(offset); |
fcfd9599 | 1699 | map->blocks_per_member = __cpu_to_le32(info_to_blocks_per_member(info)); |
ef6ffade DW |
1700 | map->blocks_per_strip = __cpu_to_le16(info_to_blocks_per_strip(info)); |
1701 | map->num_data_stripes = __cpu_to_le32(info_to_num_data_stripes(info)); | |
c2c087e6 DW |
1702 | map->map_state = info->level ? IMSM_T_STATE_UNINITIALIZED : |
1703 | IMSM_T_STATE_NORMAL; | |
ef6ffade DW |
1704 | |
1705 | if (info->level == 1 && info->raid_disks > 2) { | |
1706 | fprintf(stderr, Name": imsm does not support more than 2 disks" | |
1707 | "in a raid1 volume\n"); | |
1708 | return 0; | |
1709 | } | |
c2c087e6 DW |
1710 | if (info->level == 10) |
1711 | map->raid_level = 1; | |
1712 | else | |
1713 | map->raid_level = info->level; | |
ef6ffade | 1714 | |
c2c087e6 DW |
1715 | map->num_members = info->raid_disks; |
1716 | for (i = 0; i < map->num_members; i++) { | |
1717 | /* initialized in add_to_super */ | |
be73972f | 1718 | set_imsm_ord_tbl_ent(map, i, 0); |
c2c087e6 | 1719 | } |
949c47a0 DW |
1720 | mpb->num_raid_devs++; |
1721 | super->dev_tbl[super->current_vol] = dev; | |
c2c087e6 DW |
1722 | |
1723 | return 1; | |
cdddbdbc DW |
1724 | } |
1725 | ||
bf5a934a DW |
1726 | static int init_super_imsm(struct supertype *st, mdu_array_info_t *info, |
1727 | unsigned long long size, char *name, | |
1728 | char *homehost, int *uuid) | |
1729 | { | |
1730 | /* This is primarily called by Create when creating a new array. | |
1731 | * We will then get add_to_super called for each component, and then | |
1732 | * write_init_super called to write it out to each device. | |
1733 | * For IMSM, Create can create on fresh devices or on a pre-existing | |
1734 | * array. | |
1735 | * To create on a pre-existing array a different method will be called. | |
1736 | * This one is just for fresh drives. | |
1737 | */ | |
1738 | struct intel_super *super; | |
1739 | struct imsm_super *mpb; | |
1740 | size_t mpb_size; | |
1741 | ||
1742 | if (!info) { | |
1743 | st->sb = NULL; | |
1744 | return 0; | |
1745 | } | |
1746 | if (st->sb) | |
1747 | return init_super_imsm_volume(st, info, size, name, homehost, | |
1748 | uuid); | |
1749 | ||
1750 | super = alloc_super(1); | |
1751 | if (!super) | |
1752 | return 0; | |
1753 | mpb_size = disks_to_mpb_size(info->nr_disks); | |
ef649044 | 1754 | if (posix_memalign(&super->buf, 512, mpb_size) != 0) { |
bf5a934a DW |
1755 | free(super); |
1756 | return 0; | |
1757 | } | |
ef649044 | 1758 | mpb = super->buf; |
bf5a934a DW |
1759 | memset(mpb, 0, mpb_size); |
1760 | ||
1761 | memcpy(mpb->sig, MPB_SIGNATURE, strlen(MPB_SIGNATURE)); | |
1762 | memcpy(mpb->sig + strlen(MPB_SIGNATURE), MPB_VERSION_RAID5, | |
1763 | strlen(MPB_VERSION_RAID5)); | |
1764 | mpb->mpb_size = mpb_size; | |
1765 | ||
bf5a934a DW |
1766 | st->sb = super; |
1767 | return 1; | |
1768 | } | |
1769 | ||
0e600426 | 1770 | #ifndef MDASSEMBLE |
bf5a934a DW |
1771 | static void add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk, |
1772 | int fd, char *devname) | |
1773 | { | |
1774 | struct intel_super *super = st->sb; | |
d23fe947 | 1775 | struct imsm_super *mpb = super->anchor; |
bf5a934a DW |
1776 | struct dl *dl; |
1777 | struct imsm_dev *dev; | |
1778 | struct imsm_map *map; | |
bf5a934a DW |
1779 | __u32 status; |
1780 | ||
949c47a0 | 1781 | dev = get_imsm_dev(super, super->current_vol); |
a965f303 | 1782 | map = get_imsm_map(dev, 0); |
bf5a934a DW |
1783 | |
1784 | for (dl = super->disks; dl ; dl = dl->next) | |
1785 | if (dl->major == dk->major && | |
1786 | dl->minor == dk->minor) | |
1787 | break; | |
d23fe947 | 1788 | |
bf5a934a DW |
1789 | if (!dl || ! (dk->state & (1<<MD_DISK_SYNC))) |
1790 | return; | |
1791 | ||
d23fe947 DW |
1792 | /* add a pristine spare to the metadata */ |
1793 | if (dl->index < 0) { | |
1794 | dl->index = super->anchor->num_disks; | |
1795 | super->anchor->num_disks++; | |
1796 | } | |
be73972f | 1797 | set_imsm_ord_tbl_ent(map, dk->number, dl->index); |
bf5a934a | 1798 | status = CONFIGURED_DISK | USABLE_DISK; |
d23fe947 DW |
1799 | dl->disk.status = __cpu_to_le32(status); |
1800 | ||
1801 | /* if we are creating the first raid device update the family number */ | |
1802 | if (super->current_vol == 0) { | |
1803 | __u32 sum; | |
1804 | struct imsm_dev *_dev = __get_imsm_dev(mpb, 0); | |
1805 | struct imsm_disk *_disk = __get_imsm_disk(mpb, dl->index); | |
1806 | ||
1807 | *_dev = *dev; | |
1808 | *_disk = dl->disk; | |
1809 | sum = __gen_imsm_checksum(mpb); | |
1810 | mpb->family_num = __cpu_to_le32(sum); | |
1811 | } | |
bf5a934a DW |
1812 | } |
1813 | ||
c2c087e6 | 1814 | static void add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk, |
cdddbdbc DW |
1815 | int fd, char *devname) |
1816 | { | |
c2c087e6 | 1817 | struct intel_super *super = st->sb; |
c2c087e6 DW |
1818 | struct dl *dd; |
1819 | unsigned long long size; | |
1820 | __u32 status, id; | |
1821 | int rv; | |
1822 | struct stat stb; | |
1823 | ||
bf5a934a DW |
1824 | if (super->current_vol >= 0) { |
1825 | add_to_super_imsm_volume(st, dk, fd, devname); | |
1826 | return; | |
1827 | } | |
1828 | ||
c2c087e6 DW |
1829 | fstat(fd, &stb); |
1830 | dd = malloc(sizeof(*dd)); | |
b9f594fe | 1831 | if (!dd) { |
c2c087e6 DW |
1832 | fprintf(stderr, |
1833 | Name ": malloc failed %s:%d.\n", __func__, __LINE__); | |
1834 | abort(); | |
1835 | } | |
1836 | memset(dd, 0, sizeof(*dd)); | |
1837 | dd->major = major(stb.st_rdev); | |
1838 | dd->minor = minor(stb.st_rdev); | |
b9f594fe | 1839 | dd->index = -1; |
c2c087e6 | 1840 | dd->devname = devname ? strdup(devname) : NULL; |
c2c087e6 DW |
1841 | dd->fd = fd; |
1842 | rv = imsm_read_serial(fd, devname, dd->serial); | |
1843 | if (rv) { | |
1844 | fprintf(stderr, | |
0030e8d6 | 1845 | Name ": failed to retrieve scsi serial, aborting\n"); |
949c47a0 | 1846 | free(dd); |
0030e8d6 | 1847 | abort(); |
c2c087e6 DW |
1848 | } |
1849 | ||
c2c087e6 DW |
1850 | get_dev_size(fd, NULL, &size); |
1851 | size /= 512; | |
1852 | status = USABLE_DISK | SPARE_DISK; | |
1f24f035 | 1853 | serialcpy(dd->disk.serial, dd->serial); |
b9f594fe DW |
1854 | dd->disk.total_blocks = __cpu_to_le32(size); |
1855 | dd->disk.status = __cpu_to_le32(status); | |
c2c087e6 | 1856 | if (sysfs_disk_to_scsi_id(fd, &id) == 0) |
b9f594fe | 1857 | dd->disk.scsi_id = __cpu_to_le32(id); |
c2c087e6 | 1858 | else |
b9f594fe | 1859 | dd->disk.scsi_id = __cpu_to_le32(0); |
43dad3d6 DW |
1860 | |
1861 | if (st->update_tail) { | |
1862 | dd->next = super->add; | |
1863 | super->add = dd; | |
1864 | } else { | |
1865 | dd->next = super->disks; | |
1866 | super->disks = dd; | |
1867 | } | |
cdddbdbc DW |
1868 | } |
1869 | ||
c2c087e6 DW |
1870 | static int store_imsm_mpb(int fd, struct intel_super *super); |
1871 | ||
d23fe947 DW |
1872 | /* spare records have their own family number and do not have any defined raid |
1873 | * devices | |
1874 | */ | |
1875 | static int write_super_imsm_spares(struct intel_super *super, int doclose) | |
1876 | { | |
1877 | struct imsm_super mpb_save; | |
1878 | struct imsm_super *mpb = super->anchor; | |
1879 | __u32 sum; | |
1880 | struct dl *d; | |
1881 | ||
1882 | mpb_save = *mpb; | |
1883 | mpb->num_raid_devs = 0; | |
1884 | mpb->num_disks = 1; | |
1885 | mpb->mpb_size = sizeof(struct imsm_super); | |
1886 | mpb->generation_num = __cpu_to_le32(1UL); | |
1887 | ||
1888 | for (d = super->disks; d; d = d->next) { | |
8796fdc4 | 1889 | if (d->index != -1) |
d23fe947 DW |
1890 | continue; |
1891 | ||
1892 | mpb->disk[0] = d->disk; | |
1893 | sum = __gen_imsm_checksum(mpb); | |
1894 | mpb->family_num = __cpu_to_le32(sum); | |
1895 | sum = __gen_imsm_checksum(mpb); | |
1896 | mpb->check_sum = __cpu_to_le32(sum); | |
1897 | ||
1898 | if (store_imsm_mpb(d->fd, super)) { | |
1899 | fprintf(stderr, "%s: failed for device %d:%d %s\n", | |
1900 | __func__, d->major, d->minor, strerror(errno)); | |
1901 | *mpb = mpb_save; | |
e74255d9 | 1902 | return 1; |
d23fe947 DW |
1903 | } |
1904 | if (doclose) { | |
1905 | close(d->fd); | |
1906 | d->fd = -1; | |
1907 | } | |
1908 | } | |
1909 | ||
1910 | *mpb = mpb_save; | |
e74255d9 | 1911 | return 0; |
d23fe947 DW |
1912 | } |
1913 | ||
c2c087e6 | 1914 | static int write_super_imsm(struct intel_super *super, int doclose) |
cdddbdbc | 1915 | { |
949c47a0 | 1916 | struct imsm_super *mpb = super->anchor; |
c2c087e6 DW |
1917 | struct dl *d; |
1918 | __u32 generation; | |
1919 | __u32 sum; | |
d23fe947 | 1920 | int spares = 0; |
949c47a0 | 1921 | int i; |
a48ac0a8 | 1922 | __u32 mpb_size = sizeof(struct imsm_super) - sizeof(struct imsm_disk); |
cdddbdbc | 1923 | |
c2c087e6 DW |
1924 | /* 'generation' is incremented everytime the metadata is written */ |
1925 | generation = __le32_to_cpu(mpb->generation_num); | |
1926 | generation++; | |
1927 | mpb->generation_num = __cpu_to_le32(generation); | |
1928 | ||
1ee1e9fc | 1929 | mpb_size += sizeof(struct imsm_disk) * mpb->num_disks; |
d23fe947 | 1930 | for (d = super->disks; d; d = d->next) { |
8796fdc4 | 1931 | if (d->index == -1) |
d23fe947 | 1932 | spares++; |
1ee1e9fc | 1933 | else |
d23fe947 | 1934 | mpb->disk[d->index] = d->disk; |
d23fe947 | 1935 | } |
47ee5a45 DW |
1936 | for (d = super->missing; d; d = d->next) |
1937 | mpb->disk[d->index] = d->disk; | |
b9f594fe | 1938 | |
949c47a0 DW |
1939 | for (i = 0; i < mpb->num_raid_devs; i++) { |
1940 | struct imsm_dev *dev = __get_imsm_dev(mpb, i); | |
1941 | ||
1942 | imsm_copy_dev(dev, super->dev_tbl[i]); | |
a48ac0a8 | 1943 | mpb_size += sizeof_imsm_dev(dev, 0); |
949c47a0 | 1944 | } |
a48ac0a8 DW |
1945 | mpb_size += __le32_to_cpu(mpb->bbm_log_size); |
1946 | mpb->mpb_size = __cpu_to_le32(mpb_size); | |
949c47a0 | 1947 | |
c2c087e6 | 1948 | /* recalculate checksum */ |
949c47a0 | 1949 | sum = __gen_imsm_checksum(mpb); |
c2c087e6 DW |
1950 | mpb->check_sum = __cpu_to_le32(sum); |
1951 | ||
d23fe947 | 1952 | /* write the mpb for disks that compose raid devices */ |
c2c087e6 | 1953 | for (d = super->disks; d ; d = d->next) { |
d23fe947 DW |
1954 | if (d->index < 0) |
1955 | continue; | |
8796fdc4 | 1956 | if (store_imsm_mpb(d->fd, super)) |
c2c087e6 DW |
1957 | fprintf(stderr, "%s: failed for device %d:%d %s\n", |
1958 | __func__, d->major, d->minor, strerror(errno)); | |
c2c087e6 DW |
1959 | if (doclose) { |
1960 | close(d->fd); | |
1961 | d->fd = -1; | |
1962 | } | |
1963 | } | |
1964 | ||
d23fe947 DW |
1965 | if (spares) |
1966 | return write_super_imsm_spares(super, doclose); | |
1967 | ||
e74255d9 | 1968 | return 0; |
c2c087e6 DW |
1969 | } |
1970 | ||
0e600426 | 1971 | |
43dad3d6 DW |
1972 | static int create_array(struct supertype *st) |
1973 | { | |
1974 | size_t len; | |
1975 | struct imsm_update_create_array *u; | |
1976 | struct intel_super *super = st->sb; | |
1977 | struct imsm_dev *dev = get_imsm_dev(super, super->current_vol); | |
1978 | ||
1979 | len = sizeof(*u) - sizeof(*dev) + sizeof_imsm_dev(dev, 0); | |
1980 | u = malloc(len); | |
1981 | if (!u) { | |
1982 | fprintf(stderr, "%s: failed to allocate update buffer\n", | |
1983 | __func__); | |
1984 | return 1; | |
1985 | } | |
1986 | ||
1987 | u->type = update_create_array; | |
1988 | u->dev_idx = super->current_vol; | |
1989 | imsm_copy_dev(&u->dev, dev); | |
1990 | append_metadata_update(st, u, len); | |
1991 | ||
1992 | return 0; | |
1993 | } | |
1994 | ||
7801ac20 | 1995 | static int _add_disk(struct supertype *st) |
43dad3d6 DW |
1996 | { |
1997 | struct intel_super *super = st->sb; | |
1998 | size_t len; | |
1999 | struct imsm_update_add_disk *u; | |
2000 | ||
2001 | if (!super->add) | |
2002 | return 0; | |
2003 | ||
2004 | len = sizeof(*u); | |
2005 | u = malloc(len); | |
2006 | if (!u) { | |
2007 | fprintf(stderr, "%s: failed to allocate update buffer\n", | |
2008 | __func__); | |
2009 | return 1; | |
2010 | } | |
2011 | ||
2012 | u->type = update_add_disk; | |
2013 | append_metadata_update(st, u, len); | |
2014 | ||
2015 | return 0; | |
2016 | } | |
2017 | ||
c2c087e6 DW |
2018 | static int write_init_super_imsm(struct supertype *st) |
2019 | { | |
8273f55e | 2020 | if (st->update_tail) { |
43dad3d6 DW |
2021 | /* queue the recently created array / added disk |
2022 | * as a metadata update */ | |
8273f55e | 2023 | struct intel_super *super = st->sb; |
8273f55e | 2024 | struct dl *d; |
43dad3d6 | 2025 | int rv; |
8273f55e | 2026 | |
43dad3d6 DW |
2027 | /* determine if we are creating a volume or adding a disk */ |
2028 | if (super->current_vol < 0) { | |
2029 | /* in the add disk case we are running in mdmon | |
2030 | * context, so don't close fd's | |
2031 | */ | |
7801ac20 | 2032 | return _add_disk(st); |
43dad3d6 DW |
2033 | } else |
2034 | rv = create_array(st); | |
8273f55e DW |
2035 | |
2036 | for (d = super->disks; d ; d = d->next) { | |
2037 | close(d->fd); | |
2038 | d->fd = -1; | |
2039 | } | |
2040 | ||
43dad3d6 | 2041 | return rv; |
8273f55e DW |
2042 | } else |
2043 | return write_super_imsm(st->sb, 1); | |
cdddbdbc | 2044 | } |
0e600426 | 2045 | #endif |
cdddbdbc DW |
2046 | |
2047 | static int store_zero_imsm(struct supertype *st, int fd) | |
2048 | { | |
551c80c1 | 2049 | unsigned long long dsize; |
6416d527 | 2050 | void *buf; |
551c80c1 DW |
2051 | |
2052 | get_dev_size(fd, NULL, &dsize); | |
2053 | ||
2054 | /* first block is stored on second to last sector of the disk */ | |
2055 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
2056 | return 1; | |
2057 | ||
ad97895e DW |
2058 | if (posix_memalign(&buf, 512, 512) != 0) |
2059 | return 1; | |
2060 | ||
eb7ea463 DW |
2061 | memset(buf, 0, 512); |
2062 | if (write(fd, buf, 512) != 512) | |
551c80c1 | 2063 | return 1; |
cdddbdbc DW |
2064 | return 0; |
2065 | } | |
2066 | ||
0e600426 N |
2067 | static int imsm_bbm_log_size(struct imsm_super *mpb) |
2068 | { | |
2069 | return __le32_to_cpu(mpb->bbm_log_size); | |
2070 | } | |
2071 | ||
2072 | #ifndef MDASSEMBLE | |
cdddbdbc DW |
2073 | static int validate_geometry_imsm_container(struct supertype *st, int level, |
2074 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 2075 | unsigned long long size, char *dev, |
2c514b71 NB |
2076 | unsigned long long *freesize, |
2077 | int verbose) | |
cdddbdbc | 2078 | { |
c2c087e6 DW |
2079 | int fd; |
2080 | unsigned long long ldsize; | |
cdddbdbc | 2081 | |
c2c087e6 DW |
2082 | if (level != LEVEL_CONTAINER) |
2083 | return 0; | |
2084 | if (!dev) | |
2085 | return 1; | |
2086 | ||
2087 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
2088 | if (fd < 0) { | |
2c514b71 NB |
2089 | if (verbose) |
2090 | fprintf(stderr, Name ": imsm: Cannot open %s: %s\n", | |
2091 | dev, strerror(errno)); | |
c2c087e6 DW |
2092 | return 0; |
2093 | } | |
2094 | if (!get_dev_size(fd, dev, &ldsize)) { | |
2095 | close(fd); | |
2096 | return 0; | |
2097 | } | |
2098 | close(fd); | |
2099 | ||
2100 | *freesize = avail_size_imsm(st, ldsize >> 9); | |
2101 | ||
2102 | return 1; | |
cdddbdbc DW |
2103 | } |
2104 | ||
c2c087e6 DW |
2105 | /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd |
2106 | * FIX ME add ahci details | |
2107 | */ | |
8b353278 DW |
2108 | static int validate_geometry_imsm_volume(struct supertype *st, int level, |
2109 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 2110 | unsigned long long size, char *dev, |
2c514b71 NB |
2111 | unsigned long long *freesize, |
2112 | int verbose) | |
cdddbdbc | 2113 | { |
c2c087e6 DW |
2114 | struct stat stb; |
2115 | struct intel_super *super = st->sb; | |
2116 | struct dl *dl; | |
2117 | unsigned long long pos = 0; | |
2118 | unsigned long long maxsize; | |
2119 | struct extent *e; | |
2120 | int i; | |
cdddbdbc | 2121 | |
c2c087e6 DW |
2122 | if (level == LEVEL_CONTAINER) |
2123 | return 0; | |
2124 | ||
2125 | if (level == 1 && raiddisks > 2) { | |
2c514b71 NB |
2126 | if (verbose) |
2127 | fprintf(stderr, Name ": imsm does not support more " | |
2128 | "than 2 in a raid1 configuration\n"); | |
c2c087e6 DW |
2129 | return 0; |
2130 | } | |
2131 | ||
2132 | /* We must have the container info already read in. */ | |
2133 | if (!super) | |
2134 | return 0; | |
2135 | ||
2136 | if (!dev) { | |
2137 | /* General test: make sure there is space for | |
2da8544a DW |
2138 | * 'raiddisks' device extents of size 'size' at a given |
2139 | * offset | |
c2c087e6 DW |
2140 | */ |
2141 | unsigned long long minsize = size*2 /* convert to blocks */; | |
2da8544a | 2142 | unsigned long long start_offset = ~0ULL; |
c2c087e6 DW |
2143 | int dcnt = 0; |
2144 | if (minsize == 0) | |
2145 | minsize = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
2146 | for (dl = super->disks; dl ; dl = dl->next) { | |
2147 | int found = 0; | |
2148 | ||
bf5a934a | 2149 | pos = 0; |
c2c087e6 DW |
2150 | i = 0; |
2151 | e = get_extents(super, dl); | |
2152 | if (!e) continue; | |
2153 | do { | |
2154 | unsigned long long esize; | |
2155 | esize = e[i].start - pos; | |
2156 | if (esize >= minsize) | |
2157 | found = 1; | |
2da8544a DW |
2158 | if (found && start_offset == ~0ULL) { |
2159 | start_offset = pos; | |
2160 | break; | |
2161 | } else if (found && pos != start_offset) { | |
2162 | found = 0; | |
2163 | break; | |
2164 | } | |
c2c087e6 DW |
2165 | pos = e[i].start + e[i].size; |
2166 | i++; | |
2167 | } while (e[i-1].size); | |
2168 | if (found) | |
2169 | dcnt++; | |
2170 | free(e); | |
2171 | } | |
2172 | if (dcnt < raiddisks) { | |
2c514b71 NB |
2173 | if (verbose) |
2174 | fprintf(stderr, Name ": imsm: Not enough " | |
2175 | "devices with space for this array " | |
2176 | "(%d < %d)\n", | |
2177 | dcnt, raiddisks); | |
c2c087e6 DW |
2178 | return 0; |
2179 | } | |
2180 | return 1; | |
2181 | } | |
2182 | /* This device must be a member of the set */ | |
2183 | if (stat(dev, &stb) < 0) | |
2184 | return 0; | |
2185 | if ((S_IFMT & stb.st_mode) != S_IFBLK) | |
2186 | return 0; | |
2187 | for (dl = super->disks ; dl ; dl = dl->next) { | |
2188 | if (dl->major == major(stb.st_rdev) && | |
2189 | dl->minor == minor(stb.st_rdev)) | |
2190 | break; | |
2191 | } | |
2192 | if (!dl) { | |
2c514b71 NB |
2193 | if (verbose) |
2194 | fprintf(stderr, Name ": %s is not in the " | |
2195 | "same imsm set\n", dev); | |
c2c087e6 DW |
2196 | return 0; |
2197 | } | |
2198 | e = get_extents(super, dl); | |
2199 | maxsize = 0; | |
2200 | i = 0; | |
2201 | if (e) do { | |
2202 | unsigned long long esize; | |
2203 | esize = e[i].start - pos; | |
2204 | if (esize >= maxsize) | |
2205 | maxsize = esize; | |
2206 | pos = e[i].start + e[i].size; | |
2207 | i++; | |
2208 | } while (e[i-1].size); | |
2209 | *freesize = maxsize; | |
2210 | ||
2211 | return 1; | |
cdddbdbc DW |
2212 | } |
2213 | ||
bf5a934a DW |
2214 | static int validate_geometry_imsm(struct supertype *st, int level, int layout, |
2215 | int raiddisks, int chunk, unsigned long long size, | |
2216 | char *dev, unsigned long long *freesize, | |
2217 | int verbose) | |
2218 | { | |
2219 | int fd, cfd; | |
2220 | struct mdinfo *sra; | |
2221 | ||
2222 | /* if given unused devices create a container | |
2223 | * if given given devices in a container create a member volume | |
2224 | */ | |
2225 | if (level == LEVEL_CONTAINER) { | |
2226 | /* Must be a fresh device to add to a container */ | |
2227 | return validate_geometry_imsm_container(st, level, layout, | |
2228 | raiddisks, chunk, size, | |
2229 | dev, freesize, | |
2230 | verbose); | |
2231 | } | |
2232 | ||
2233 | if (st->sb) { | |
2234 | /* creating in a given container */ | |
2235 | return validate_geometry_imsm_volume(st, level, layout, | |
2236 | raiddisks, chunk, size, | |
2237 | dev, freesize, verbose); | |
2238 | } | |
2239 | ||
2240 | /* limit creation to the following levels */ | |
2241 | if (!dev) | |
2242 | switch (level) { | |
2243 | case 0: | |
2244 | case 1: | |
2245 | case 10: | |
2246 | case 5: | |
2247 | break; | |
2248 | default: | |
2249 | return 1; | |
2250 | } | |
2251 | ||
2252 | /* This device needs to be a device in an 'imsm' container */ | |
2253 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
2254 | if (fd >= 0) { | |
2255 | if (verbose) | |
2256 | fprintf(stderr, | |
2257 | Name ": Cannot create this array on device %s\n", | |
2258 | dev); | |
2259 | close(fd); | |
2260 | return 0; | |
2261 | } | |
2262 | if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) { | |
2263 | if (verbose) | |
2264 | fprintf(stderr, Name ": Cannot open %s: %s\n", | |
2265 | dev, strerror(errno)); | |
2266 | return 0; | |
2267 | } | |
2268 | /* Well, it is in use by someone, maybe an 'imsm' container. */ | |
2269 | cfd = open_container(fd); | |
2270 | if (cfd < 0) { | |
2271 | close(fd); | |
2272 | if (verbose) | |
2273 | fprintf(stderr, Name ": Cannot use %s: It is busy\n", | |
2274 | dev); | |
2275 | return 0; | |
2276 | } | |
2277 | sra = sysfs_read(cfd, 0, GET_VERSION); | |
2278 | close(fd); | |
2279 | if (sra && sra->array.major_version == -1 && | |
2280 | strcmp(sra->text_version, "imsm") == 0) { | |
2281 | /* This is a member of a imsm container. Load the container | |
2282 | * and try to create a volume | |
2283 | */ | |
2284 | struct intel_super *super; | |
2285 | ||
2286 | if (load_super_imsm_all(st, cfd, (void **) &super, NULL, 1) == 0) { | |
2287 | st->sb = super; | |
2288 | st->container_dev = fd2devnum(cfd); | |
2289 | close(cfd); | |
2290 | return validate_geometry_imsm_volume(st, level, layout, | |
2291 | raiddisks, chunk, | |
2292 | size, dev, | |
2293 | freesize, verbose); | |
2294 | } | |
2295 | close(cfd); | |
2296 | } else /* may belong to another container */ | |
2297 | return 0; | |
2298 | ||
2299 | return 1; | |
2300 | } | |
0e600426 | 2301 | #endif /* MDASSEMBLE */ |
bf5a934a | 2302 | |
cdddbdbc DW |
2303 | static struct mdinfo *container_content_imsm(struct supertype *st) |
2304 | { | |
4f5bc454 DW |
2305 | /* Given a container loaded by load_super_imsm_all, |
2306 | * extract information about all the arrays into | |
2307 | * an mdinfo tree. | |
2308 | * | |
2309 | * For each imsm_dev create an mdinfo, fill it in, | |
2310 | * then look for matching devices in super->disks | |
2311 | * and create appropriate device mdinfo. | |
2312 | */ | |
2313 | struct intel_super *super = st->sb; | |
949c47a0 | 2314 | struct imsm_super *mpb = super->anchor; |
4f5bc454 DW |
2315 | struct mdinfo *rest = NULL; |
2316 | int i; | |
cdddbdbc | 2317 | |
604b746f JD |
2318 | /* do not assemble arrays that might have bad blocks */ |
2319 | if (imsm_bbm_log_size(super->anchor)) { | |
2320 | fprintf(stderr, Name ": BBM log found in metadata. " | |
2321 | "Cannot activate array(s).\n"); | |
2322 | return NULL; | |
2323 | } | |
2324 | ||
4f5bc454 | 2325 | for (i = 0; i < mpb->num_raid_devs; i++) { |
949c47a0 | 2326 | struct imsm_dev *dev = get_imsm_dev(super, i); |
a965f303 | 2327 | struct imsm_map *map = get_imsm_map(dev, 0); |
4f5bc454 | 2328 | struct mdinfo *this; |
4f5bc454 DW |
2329 | int slot; |
2330 | ||
2331 | this = malloc(sizeof(*this)); | |
2332 | memset(this, 0, sizeof(*this)); | |
2333 | this->next = rest; | |
4f5bc454 | 2334 | |
301406c9 DW |
2335 | super->current_vol = i; |
2336 | getinfo_super_imsm_volume(st, this); | |
4f5bc454 | 2337 | for (slot = 0 ; slot < map->num_members; slot++) { |
4f5bc454 DW |
2338 | struct mdinfo *info_d; |
2339 | struct dl *d; | |
2340 | int idx; | |
9a1608e5 | 2341 | int skip; |
4f5bc454 | 2342 | __u32 s; |
7eef0453 | 2343 | __u32 ord; |
4f5bc454 | 2344 | |
9a1608e5 | 2345 | skip = 0; |
ff077194 | 2346 | idx = get_imsm_disk_idx(dev, slot); |
7eef0453 | 2347 | ord = get_imsm_ord_tbl_ent(dev, slot); |
4f5bc454 DW |
2348 | for (d = super->disks; d ; d = d->next) |
2349 | if (d->index == idx) | |
2350 | break; | |
2351 | ||
2352 | if (d == NULL) | |
9a1608e5 DW |
2353 | skip = 1; |
2354 | ||
2355 | s = d ? __le32_to_cpu(d->disk.status) : 0; | |
2356 | if (s & FAILED_DISK) | |
2357 | skip = 1; | |
2358 | if (!(s & USABLE_DISK)) | |
2359 | skip = 1; | |
7eef0453 DW |
2360 | if (ord & IMSM_ORD_REBUILD) |
2361 | skip = 1; | |
9a1608e5 DW |
2362 | |
2363 | /* | |
2364 | * if we skip some disks the array will be assmebled degraded; | |
2365 | * reset resync start to avoid a dirty-degraded situation | |
2366 | * | |
2367 | * FIXME handle dirty degraded | |
2368 | */ | |
2369 | if (skip && !dev->vol.dirty) | |
2370 | this->resync_start = ~0ULL; | |
2371 | if (skip) | |
2372 | continue; | |
4f5bc454 DW |
2373 | |
2374 | info_d = malloc(sizeof(*info_d)); | |
9a1608e5 DW |
2375 | if (!info_d) { |
2376 | fprintf(stderr, Name ": failed to allocate disk" | |
2377 | " for volume %s\n", (char *) dev->volume); | |
2378 | free(this); | |
2379 | this = rest; | |
2380 | break; | |
2381 | } | |
4f5bc454 DW |
2382 | memset(info_d, 0, sizeof(*info_d)); |
2383 | info_d->next = this->devs; | |
2384 | this->devs = info_d; | |
2385 | ||
4f5bc454 DW |
2386 | info_d->disk.number = d->index; |
2387 | info_d->disk.major = d->major; | |
2388 | info_d->disk.minor = d->minor; | |
2389 | info_d->disk.raid_disk = slot; | |
4f5bc454 DW |
2390 | |
2391 | this->array.working_disks++; | |
2392 | ||
2393 | info_d->events = __le32_to_cpu(mpb->generation_num); | |
2394 | info_d->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
2395 | info_d->component_size = __le32_to_cpu(map->blocks_per_member); | |
2396 | if (d->devname) | |
2397 | strcpy(info_d->name, d->devname); | |
2398 | } | |
9a1608e5 | 2399 | rest = this; |
4f5bc454 DW |
2400 | } |
2401 | ||
2402 | return rest; | |
cdddbdbc DW |
2403 | } |
2404 | ||
845dea95 | 2405 | |
0e600426 | 2406 | #ifndef MDASSEMBLE |
cba0191b NB |
2407 | static int imsm_open_new(struct supertype *c, struct active_array *a, |
2408 | char *inst) | |
845dea95 | 2409 | { |
0372d5a2 | 2410 | struct intel_super *super = c->sb; |
949c47a0 | 2411 | struct imsm_super *mpb = super->anchor; |
0372d5a2 | 2412 | |
949c47a0 | 2413 | if (atoi(inst) >= mpb->num_raid_devs) { |
0372d5a2 DW |
2414 | fprintf(stderr, "%s: subarry index %d, out of range\n", |
2415 | __func__, atoi(inst)); | |
2416 | return -ENODEV; | |
2417 | } | |
2418 | ||
4e6e574a | 2419 | dprintf("imsm: open_new %s\n", inst); |
cba0191b | 2420 | a->info.container_member = atoi(inst); |
845dea95 NB |
2421 | return 0; |
2422 | } | |
2423 | ||
fb49eef2 | 2424 | static __u8 imsm_check_degraded(struct intel_super *super, struct imsm_dev *dev, int failed) |
c2a1e7da | 2425 | { |
a965f303 | 2426 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2a1e7da DW |
2427 | |
2428 | if (!failed) | |
3393c6af DW |
2429 | return map->map_state == IMSM_T_STATE_UNINITIALIZED ? |
2430 | IMSM_T_STATE_UNINITIALIZED : IMSM_T_STATE_NORMAL; | |
c2a1e7da DW |
2431 | |
2432 | switch (get_imsm_raid_level(map)) { | |
2433 | case 0: | |
2434 | return IMSM_T_STATE_FAILED; | |
2435 | break; | |
2436 | case 1: | |
2437 | if (failed < map->num_members) | |
2438 | return IMSM_T_STATE_DEGRADED; | |
2439 | else | |
2440 | return IMSM_T_STATE_FAILED; | |
2441 | break; | |
2442 | case 10: | |
2443 | { | |
2444 | /** | |
c92a2527 DW |
2445 | * check to see if any mirrors have failed, otherwise we |
2446 | * are degraded. Even numbered slots are mirrored on | |
2447 | * slot+1 | |
c2a1e7da | 2448 | */ |
c2a1e7da | 2449 | int i; |
c92a2527 | 2450 | int insync; |
c2a1e7da DW |
2451 | |
2452 | for (i = 0; i < map->num_members; i++) { | |
c92a2527 DW |
2453 | __u32 ord = get_imsm_ord_tbl_ent(dev, i); |
2454 | int idx = ord_to_idx(ord); | |
2455 | struct imsm_disk *disk; | |
c2a1e7da | 2456 | |
c92a2527 DW |
2457 | /* reset the potential in-sync count on even-numbered |
2458 | * slots. num_copies is always 2 for imsm raid10 | |
2459 | */ | |
2460 | if ((i & 1) == 0) | |
2461 | insync = 2; | |
c2a1e7da | 2462 | |
c92a2527 DW |
2463 | disk = get_imsm_disk(super, idx); |
2464 | if (!disk || | |
2465 | __le32_to_cpu(disk->status) & FAILED_DISK || | |
2466 | ord & IMSM_ORD_REBUILD) | |
2467 | insync--; | |
c2a1e7da | 2468 | |
c92a2527 DW |
2469 | /* no in-sync disks left in this mirror the |
2470 | * array has failed | |
2471 | */ | |
2472 | if (insync == 0) | |
2473 | return IMSM_T_STATE_FAILED; | |
c2a1e7da DW |
2474 | } |
2475 | ||
2476 | return IMSM_T_STATE_DEGRADED; | |
2477 | } | |
2478 | case 5: | |
2479 | if (failed < 2) | |
2480 | return IMSM_T_STATE_DEGRADED; | |
2481 | else | |
2482 | return IMSM_T_STATE_FAILED; | |
2483 | break; | |
2484 | default: | |
2485 | break; | |
2486 | } | |
2487 | ||
2488 | return map->map_state; | |
2489 | } | |
2490 | ||
ff077194 | 2491 | static int imsm_count_failed(struct intel_super *super, struct imsm_dev *dev) |
c2a1e7da DW |
2492 | { |
2493 | int i; | |
2494 | int failed = 0; | |
2495 | struct imsm_disk *disk; | |
ff077194 | 2496 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2a1e7da DW |
2497 | |
2498 | for (i = 0; i < map->num_members; i++) { | |
b10b37b8 DW |
2499 | __u32 ord = get_imsm_ord_tbl_ent(dev, i); |
2500 | int idx = ord_to_idx(ord); | |
c2a1e7da | 2501 | |
949c47a0 | 2502 | disk = get_imsm_disk(super, idx); |
b10b37b8 DW |
2503 | if (!disk || |
2504 | __le32_to_cpu(disk->status) & FAILED_DISK || | |
2505 | ord & IMSM_ORD_REBUILD) | |
fcb84475 | 2506 | failed++; |
c2a1e7da DW |
2507 | } |
2508 | ||
2509 | return failed; | |
845dea95 NB |
2510 | } |
2511 | ||
0c046afd DW |
2512 | static int is_resyncing(struct imsm_dev *dev) |
2513 | { | |
2514 | struct imsm_map *migr_map; | |
2515 | ||
2516 | if (!dev->vol.migr_state) | |
2517 | return 0; | |
2518 | ||
2519 | if (dev->vol.migr_type == 0) | |
2520 | return 1; | |
2521 | ||
2522 | migr_map = get_imsm_map(dev, 1); | |
2523 | ||
2524 | if (migr_map->map_state == IMSM_T_STATE_NORMAL) | |
2525 | return 1; | |
2526 | else | |
2527 | return 0; | |
2528 | } | |
2529 | ||
2530 | static int is_rebuilding(struct imsm_dev *dev) | |
2531 | { | |
2532 | struct imsm_map *migr_map; | |
2533 | ||
2534 | if (!dev->vol.migr_state) | |
2535 | return 0; | |
2536 | ||
2537 | if (dev->vol.migr_type == 0) | |
2538 | return 0; | |
2539 | ||
2540 | migr_map = get_imsm_map(dev, 1); | |
2541 | ||
2542 | if (migr_map->map_state == IMSM_T_STATE_DEGRADED) | |
2543 | return 1; | |
2544 | else | |
2545 | return 0; | |
2546 | } | |
2547 | ||
47ee5a45 DW |
2548 | static void mark_failure(struct imsm_disk *disk) |
2549 | { | |
2550 | __u32 status = __le32_to_cpu(disk->status); | |
2551 | ||
2552 | if (status & FAILED_DISK) | |
2553 | return; | |
2554 | status |= FAILED_DISK; | |
2555 | disk->status = __cpu_to_le32(status); | |
2556 | disk->scsi_id = __cpu_to_le32(~(__u32)0); | |
2557 | memmove(&disk->serial[0], &disk->serial[1], MAX_RAID_SERIAL_LEN - 1); | |
2558 | } | |
2559 | ||
0c046afd DW |
2560 | /* Handle dirty -> clean transititions and resync. Degraded and rebuild |
2561 | * states are handled in imsm_set_disk() with one exception, when a | |
2562 | * resync is stopped due to a new failure this routine will set the | |
2563 | * 'degraded' state for the array. | |
2564 | */ | |
01f157d7 | 2565 | static int imsm_set_array_state(struct active_array *a, int consistent) |
a862209d DW |
2566 | { |
2567 | int inst = a->info.container_member; | |
2568 | struct intel_super *super = a->container->sb; | |
949c47a0 | 2569 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
a965f303 | 2570 | struct imsm_map *map = get_imsm_map(dev, 0); |
0c046afd DW |
2571 | int failed = imsm_count_failed(super, dev); |
2572 | __u8 map_state = imsm_check_degraded(super, dev, failed); | |
a862209d | 2573 | |
47ee5a45 DW |
2574 | /* before we activate this array handle any missing disks */ |
2575 | if (consistent == 2 && super->missing) { | |
2576 | struct dl *dl; | |
2577 | ||
2578 | dprintf("imsm: mark missing\n"); | |
2579 | end_migration(dev, map_state); | |
2580 | for (dl = super->missing; dl; dl = dl->next) | |
2581 | mark_failure(&dl->disk); | |
2582 | super->updates_pending++; | |
2583 | } | |
2584 | ||
0c046afd | 2585 | if (consistent == 2 && |
593add1b | 2586 | (!is_resync_complete(a) || |
0c046afd DW |
2587 | map_state != IMSM_T_STATE_NORMAL || |
2588 | dev->vol.migr_state)) | |
01f157d7 | 2589 | consistent = 0; |
272906ef | 2590 | |
593add1b | 2591 | if (is_resync_complete(a)) { |
0c046afd DW |
2592 | /* complete intialization / resync, |
2593 | * recovery is completed in ->set_disk | |
2594 | */ | |
2595 | if (is_resyncing(dev)) { | |
2596 | dprintf("imsm: mark resync done\n"); | |
f8f603f1 | 2597 | end_migration(dev, map_state); |
115c3803 | 2598 | super->updates_pending++; |
115c3803 | 2599 | } |
0c046afd DW |
2600 | } else if (!is_resyncing(dev) && !failed) { |
2601 | /* mark the start of the init process if nothing is failed */ | |
2602 | dprintf("imsm: mark resync start (%llu)\n", a->resync_start); | |
2603 | map->map_state = map_state; | |
2604 | migrate(dev, IMSM_T_STATE_NORMAL, | |
2605 | map->map_state == IMSM_T_STATE_NORMAL); | |
3393c6af | 2606 | super->updates_pending++; |
115c3803 | 2607 | } |
a862209d | 2608 | |
f8f603f1 DW |
2609 | /* check if we can update the migration checkpoint */ |
2610 | if (dev->vol.migr_state && | |
2611 | __le32_to_cpu(dev->vol.curr_migr_unit) != a->resync_start) { | |
2612 | dprintf("imsm: checkpoint migration (%llu)\n", a->resync_start); | |
2613 | dev->vol.curr_migr_unit = __cpu_to_le32(a->resync_start); | |
2614 | super->updates_pending++; | |
2615 | } | |
2616 | ||
3393c6af | 2617 | /* mark dirty / clean */ |
0c046afd | 2618 | if (dev->vol.dirty != !consistent) { |
3393c6af | 2619 | dprintf("imsm: mark '%s' (%llu)\n", |
0c046afd DW |
2620 | consistent ? "clean" : "dirty", a->resync_start); |
2621 | if (consistent) | |
2622 | dev->vol.dirty = 0; | |
2623 | else | |
2624 | dev->vol.dirty = 1; | |
a862209d DW |
2625 | super->updates_pending++; |
2626 | } | |
01f157d7 | 2627 | return consistent; |
a862209d DW |
2628 | } |
2629 | ||
8d45d196 | 2630 | static void imsm_set_disk(struct active_array *a, int n, int state) |
845dea95 | 2631 | { |
8d45d196 DW |
2632 | int inst = a->info.container_member; |
2633 | struct intel_super *super = a->container->sb; | |
949c47a0 | 2634 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
a965f303 | 2635 | struct imsm_map *map = get_imsm_map(dev, 0); |
8d45d196 | 2636 | struct imsm_disk *disk; |
0c046afd | 2637 | int failed; |
8d45d196 | 2638 | __u32 status; |
b10b37b8 | 2639 | __u32 ord; |
0c046afd | 2640 | __u8 map_state; |
8d45d196 DW |
2641 | |
2642 | if (n > map->num_members) | |
2643 | fprintf(stderr, "imsm: set_disk %d out of range 0..%d\n", | |
2644 | n, map->num_members - 1); | |
2645 | ||
2646 | if (n < 0) | |
2647 | return; | |
2648 | ||
4e6e574a | 2649 | dprintf("imsm: set_disk %d:%x\n", n, state); |
8d45d196 | 2650 | |
b10b37b8 DW |
2651 | ord = get_imsm_ord_tbl_ent(dev, n); |
2652 | disk = get_imsm_disk(super, ord_to_idx(ord)); | |
8d45d196 | 2653 | |
5802a811 | 2654 | /* check for new failures */ |
8d45d196 DW |
2655 | status = __le32_to_cpu(disk->status); |
2656 | if ((state & DS_FAULTY) && !(status & FAILED_DISK)) { | |
47ee5a45 | 2657 | mark_failure(disk); |
5802a811 | 2658 | super->updates_pending++; |
8d45d196 | 2659 | } |
47ee5a45 | 2660 | |
19859edc | 2661 | /* check if in_sync */ |
b10b37b8 DW |
2662 | if (state & DS_INSYNC && ord & IMSM_ORD_REBUILD) { |
2663 | struct imsm_map *migr_map = get_imsm_map(dev, 1); | |
2664 | ||
2665 | set_imsm_ord_tbl_ent(migr_map, n, ord_to_idx(ord)); | |
19859edc DW |
2666 | super->updates_pending++; |
2667 | } | |
8d45d196 | 2668 | |
0c046afd DW |
2669 | failed = imsm_count_failed(super, dev); |
2670 | map_state = imsm_check_degraded(super, dev, failed); | |
5802a811 | 2671 | |
0c046afd DW |
2672 | /* check if recovery complete, newly degraded, or failed */ |
2673 | if (map_state == IMSM_T_STATE_NORMAL && is_rebuilding(dev)) { | |
f8f603f1 | 2674 | end_migration(dev, map_state); |
0c046afd DW |
2675 | super->updates_pending++; |
2676 | } else if (map_state == IMSM_T_STATE_DEGRADED && | |
2677 | map->map_state != map_state && | |
2678 | !dev->vol.migr_state) { | |
2679 | dprintf("imsm: mark degraded\n"); | |
2680 | map->map_state = map_state; | |
2681 | super->updates_pending++; | |
2682 | } else if (map_state == IMSM_T_STATE_FAILED && | |
2683 | map->map_state != map_state) { | |
2684 | dprintf("imsm: mark failed\n"); | |
f8f603f1 | 2685 | end_migration(dev, map_state); |
0c046afd | 2686 | super->updates_pending++; |
5802a811 | 2687 | } |
845dea95 NB |
2688 | } |
2689 | ||
c2a1e7da DW |
2690 | static int store_imsm_mpb(int fd, struct intel_super *super) |
2691 | { | |
949c47a0 | 2692 | struct imsm_super *mpb = super->anchor; |
c2a1e7da DW |
2693 | __u32 mpb_size = __le32_to_cpu(mpb->mpb_size); |
2694 | unsigned long long dsize; | |
2695 | unsigned long long sectors; | |
2696 | ||
2697 | get_dev_size(fd, NULL, &dsize); | |
2698 | ||
272f648f DW |
2699 | if (mpb_size > 512) { |
2700 | /* -1 to account for anchor */ | |
2701 | sectors = mpb_sectors(mpb) - 1; | |
c2a1e7da | 2702 | |
272f648f DW |
2703 | /* write the extended mpb to the sectors preceeding the anchor */ |
2704 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) | |
2705 | return 1; | |
c2a1e7da | 2706 | |
99e29264 | 2707 | if (write(fd, super->buf + 512, 512 * sectors) != 512 * sectors) |
272f648f DW |
2708 | return 1; |
2709 | } | |
c2a1e7da | 2710 | |
272f648f DW |
2711 | /* first block is stored on second to last sector of the disk */ |
2712 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
c2a1e7da DW |
2713 | return 1; |
2714 | ||
272f648f | 2715 | if (write(fd, super->buf, 512) != 512) |
c2a1e7da DW |
2716 | return 1; |
2717 | ||
c2a1e7da DW |
2718 | return 0; |
2719 | } | |
2720 | ||
2e735d19 | 2721 | static void imsm_sync_metadata(struct supertype *container) |
845dea95 | 2722 | { |
2e735d19 | 2723 | struct intel_super *super = container->sb; |
c2a1e7da DW |
2724 | |
2725 | if (!super->updates_pending) | |
2726 | return; | |
2727 | ||
c2c087e6 | 2728 | write_super_imsm(super, 0); |
c2a1e7da DW |
2729 | |
2730 | super->updates_pending = 0; | |
845dea95 NB |
2731 | } |
2732 | ||
272906ef DW |
2733 | static struct dl *imsm_readd(struct intel_super *super, int idx, struct active_array *a) |
2734 | { | |
2735 | struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member); | |
ff077194 | 2736 | int i = get_imsm_disk_idx(dev, idx); |
272906ef DW |
2737 | struct dl *dl; |
2738 | ||
2739 | for (dl = super->disks; dl; dl = dl->next) | |
2740 | if (dl->index == i) | |
2741 | break; | |
2742 | ||
8796fdc4 | 2743 | if (dl && __le32_to_cpu(dl->disk.status) & FAILED_DISK) |
272906ef DW |
2744 | dl = NULL; |
2745 | ||
2746 | if (dl) | |
2747 | dprintf("%s: found %x:%x\n", __func__, dl->major, dl->minor); | |
2748 | ||
2749 | return dl; | |
2750 | } | |
2751 | ||
e553d2a4 | 2752 | static struct dl *imsm_add_spare(struct intel_super *super, int slot, struct active_array *a) |
272906ef DW |
2753 | { |
2754 | struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member); | |
e553d2a4 | 2755 | int idx = get_imsm_disk_idx(dev, slot); |
272906ef DW |
2756 | struct imsm_map *map = get_imsm_map(dev, 0); |
2757 | unsigned long long esize; | |
2758 | unsigned long long pos; | |
2759 | struct mdinfo *d; | |
2760 | struct extent *ex; | |
2761 | int j; | |
2762 | int found; | |
2763 | __u32 array_start; | |
9a1608e5 | 2764 | __u32 status; |
272906ef DW |
2765 | struct dl *dl; |
2766 | ||
2767 | for (dl = super->disks; dl; dl = dl->next) { | |
2768 | /* If in this array, skip */ | |
2769 | for (d = a->info.devs ; d ; d = d->next) | |
e553d2a4 DW |
2770 | if (d->state_fd >= 0 && |
2771 | d->disk.major == dl->major && | |
272906ef DW |
2772 | d->disk.minor == dl->minor) { |
2773 | dprintf("%x:%x already in array\n", dl->major, dl->minor); | |
2774 | break; | |
2775 | } | |
2776 | if (d) | |
2777 | continue; | |
2778 | ||
e553d2a4 | 2779 | /* skip in use or failed drives */ |
9a1608e5 | 2780 | status = __le32_to_cpu(dl->disk.status); |
e553d2a4 | 2781 | if (status & FAILED_DISK || idx == dl->index) { |
9a1608e5 DW |
2782 | dprintf("%x:%x status ( %s%s)\n", |
2783 | dl->major, dl->minor, | |
2784 | status & FAILED_DISK ? "failed " : "", | |
e553d2a4 | 2785 | idx == dl->index ? "in use " : ""); |
9a1608e5 DW |
2786 | continue; |
2787 | } | |
2788 | ||
272906ef DW |
2789 | /* Does this unused device have the requisite free space? |
2790 | * We need a->info.component_size sectors | |
2791 | */ | |
2792 | ex = get_extents(super, dl); | |
2793 | if (!ex) { | |
2794 | dprintf("cannot get extents\n"); | |
2795 | continue; | |
2796 | } | |
2797 | found = 0; | |
2798 | j = 0; | |
2799 | pos = 0; | |
2800 | array_start = __le32_to_cpu(map->pba_of_lba0); | |
2801 | ||
2802 | do { | |
2803 | /* check that we can start at pba_of_lba0 with | |
2804 | * a->info.component_size of space | |
2805 | */ | |
2806 | esize = ex[j].start - pos; | |
2807 | if (array_start >= pos && | |
2808 | array_start + a->info.component_size < ex[j].start) { | |
2809 | found = 1; | |
2810 | break; | |
2811 | } | |
2812 | pos = ex[j].start + ex[j].size; | |
2813 | j++; | |
2814 | ||
2815 | } while (ex[j-1].size); | |
2816 | ||
2817 | free(ex); | |
2818 | if (!found) { | |
2819 | dprintf("%x:%x does not have %llu at %d\n", | |
2820 | dl->major, dl->minor, | |
2821 | a->info.component_size, | |
2822 | __le32_to_cpu(map->pba_of_lba0)); | |
2823 | /* No room */ | |
2824 | continue; | |
2825 | } else | |
2826 | break; | |
2827 | } | |
2828 | ||
2829 | return dl; | |
2830 | } | |
2831 | ||
88758e9d DW |
2832 | static struct mdinfo *imsm_activate_spare(struct active_array *a, |
2833 | struct metadata_update **updates) | |
2834 | { | |
2835 | /** | |
d23fe947 DW |
2836 | * Find a device with unused free space and use it to replace a |
2837 | * failed/vacant region in an array. We replace failed regions one a | |
2838 | * array at a time. The result is that a new spare disk will be added | |
2839 | * to the first failed array and after the monitor has finished | |
2840 | * propagating failures the remainder will be consumed. | |
88758e9d | 2841 | * |
d23fe947 DW |
2842 | * FIXME add a capability for mdmon to request spares from another |
2843 | * container. | |
88758e9d DW |
2844 | */ |
2845 | ||
2846 | struct intel_super *super = a->container->sb; | |
88758e9d | 2847 | int inst = a->info.container_member; |
949c47a0 | 2848 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
a965f303 | 2849 | struct imsm_map *map = get_imsm_map(dev, 0); |
88758e9d DW |
2850 | int failed = a->info.array.raid_disks; |
2851 | struct mdinfo *rv = NULL; | |
2852 | struct mdinfo *d; | |
2853 | struct mdinfo *di; | |
2854 | struct metadata_update *mu; | |
2855 | struct dl *dl; | |
2856 | struct imsm_update_activate_spare *u; | |
2857 | int num_spares = 0; | |
2858 | int i; | |
2859 | ||
2860 | for (d = a->info.devs ; d ; d = d->next) { | |
2861 | if ((d->curr_state & DS_FAULTY) && | |
2862 | d->state_fd >= 0) | |
2863 | /* wait for Removal to happen */ | |
2864 | return NULL; | |
2865 | if (d->state_fd >= 0) | |
2866 | failed--; | |
2867 | } | |
2868 | ||
2869 | dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n", | |
2870 | inst, failed, a->info.array.raid_disks, a->info.array.level); | |
fb49eef2 | 2871 | if (imsm_check_degraded(super, dev, failed) != IMSM_T_STATE_DEGRADED) |
88758e9d DW |
2872 | return NULL; |
2873 | ||
2874 | /* For each slot, if it is not working, find a spare */ | |
88758e9d DW |
2875 | for (i = 0; i < a->info.array.raid_disks; i++) { |
2876 | for (d = a->info.devs ; d ; d = d->next) | |
2877 | if (d->disk.raid_disk == i) | |
2878 | break; | |
2879 | dprintf("found %d: %p %x\n", i, d, d?d->curr_state:0); | |
2880 | if (d && (d->state_fd >= 0)) | |
2881 | continue; | |
2882 | ||
272906ef DW |
2883 | /* |
2884 | * OK, this device needs recovery. Try to re-add the previous | |
2885 | * occupant of this slot, if this fails add a new spare | |
2886 | */ | |
2887 | dl = imsm_readd(super, i, a); | |
2888 | if (!dl) | |
2889 | dl = imsm_add_spare(super, i, a); | |
2890 | if (!dl) | |
2891 | continue; | |
2892 | ||
2893 | /* found a usable disk with enough space */ | |
2894 | di = malloc(sizeof(*di)); | |
79244939 DW |
2895 | if (!di) |
2896 | continue; | |
272906ef DW |
2897 | memset(di, 0, sizeof(*di)); |
2898 | ||
2899 | /* dl->index will be -1 in the case we are activating a | |
2900 | * pristine spare. imsm_process_update() will create a | |
2901 | * new index in this case. Once a disk is found to be | |
2902 | * failed in all member arrays it is kicked from the | |
2903 | * metadata | |
2904 | */ | |
2905 | di->disk.number = dl->index; | |
d23fe947 | 2906 | |
272906ef DW |
2907 | /* (ab)use di->devs to store a pointer to the device |
2908 | * we chose | |
2909 | */ | |
2910 | di->devs = (struct mdinfo *) dl; | |
2911 | ||
2912 | di->disk.raid_disk = i; | |
2913 | di->disk.major = dl->major; | |
2914 | di->disk.minor = dl->minor; | |
2915 | di->disk.state = 0; | |
2916 | di->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
2917 | di->component_size = a->info.component_size; | |
2918 | di->container_member = inst; | |
2919 | di->next = rv; | |
2920 | rv = di; | |
2921 | num_spares++; | |
2922 | dprintf("%x:%x to be %d at %llu\n", dl->major, dl->minor, | |
2923 | i, di->data_offset); | |
88758e9d | 2924 | |
272906ef | 2925 | break; |
88758e9d DW |
2926 | } |
2927 | ||
2928 | if (!rv) | |
2929 | /* No spares found */ | |
2930 | return rv; | |
2931 | /* Now 'rv' has a list of devices to return. | |
2932 | * Create a metadata_update record to update the | |
2933 | * disk_ord_tbl for the array | |
2934 | */ | |
2935 | mu = malloc(sizeof(*mu)); | |
79244939 DW |
2936 | if (mu) { |
2937 | mu->buf = malloc(sizeof(struct imsm_update_activate_spare) * num_spares); | |
2938 | if (mu->buf == NULL) { | |
2939 | free(mu); | |
2940 | mu = NULL; | |
2941 | } | |
2942 | } | |
2943 | if (!mu) { | |
2944 | while (rv) { | |
2945 | struct mdinfo *n = rv->next; | |
2946 | ||
2947 | free(rv); | |
2948 | rv = n; | |
2949 | } | |
2950 | return NULL; | |
2951 | } | |
2952 | ||
88758e9d DW |
2953 | mu->space = NULL; |
2954 | mu->len = sizeof(struct imsm_update_activate_spare) * num_spares; | |
2955 | mu->next = *updates; | |
2956 | u = (struct imsm_update_activate_spare *) mu->buf; | |
2957 | ||
2958 | for (di = rv ; di ; di = di->next) { | |
2959 | u->type = update_activate_spare; | |
d23fe947 DW |
2960 | u->dl = (struct dl *) di->devs; |
2961 | di->devs = NULL; | |
88758e9d DW |
2962 | u->slot = di->disk.raid_disk; |
2963 | u->array = inst; | |
2964 | u->next = u + 1; | |
2965 | u++; | |
2966 | } | |
2967 | (u-1)->next = NULL; | |
2968 | *updates = mu; | |
2969 | ||
2970 | return rv; | |
2971 | } | |
2972 | ||
ff077194 | 2973 | static int disks_overlap(struct imsm_dev *d1, struct imsm_dev *d2) |
8273f55e | 2974 | { |
ff077194 DW |
2975 | struct imsm_map *m1 = get_imsm_map(d1, 0); |
2976 | struct imsm_map *m2 = get_imsm_map(d2, 0); | |
8273f55e DW |
2977 | int i; |
2978 | int j; | |
2979 | int idx; | |
2980 | ||
2981 | for (i = 0; i < m1->num_members; i++) { | |
ff077194 | 2982 | idx = get_imsm_disk_idx(d1, i); |
8273f55e | 2983 | for (j = 0; j < m2->num_members; j++) |
ff077194 | 2984 | if (idx == get_imsm_disk_idx(d2, j)) |
8273f55e DW |
2985 | return 1; |
2986 | } | |
2987 | ||
2988 | return 0; | |
2989 | } | |
2990 | ||
24565c9a | 2991 | static void imsm_delete(struct intel_super *super, struct dl **dlp, int index); |
ae6aad82 | 2992 | |
e8319a19 DW |
2993 | static void imsm_process_update(struct supertype *st, |
2994 | struct metadata_update *update) | |
2995 | { | |
2996 | /** | |
2997 | * crack open the metadata_update envelope to find the update record | |
2998 | * update can be one of: | |
2999 | * update_activate_spare - a spare device has replaced a failed | |
3000 | * device in an array, update the disk_ord_tbl. If this disk is | |
3001 | * present in all member arrays then also clear the SPARE_DISK | |
3002 | * flag | |
3003 | */ | |
3004 | struct intel_super *super = st->sb; | |
4d7b1503 | 3005 | struct imsm_super *mpb; |
e8319a19 DW |
3006 | enum imsm_update_type type = *(enum imsm_update_type *) update->buf; |
3007 | ||
4d7b1503 DW |
3008 | /* update requires a larger buf but the allocation failed */ |
3009 | if (super->next_len && !super->next_buf) { | |
3010 | super->next_len = 0; | |
3011 | return; | |
3012 | } | |
3013 | ||
3014 | if (super->next_buf) { | |
3015 | memcpy(super->next_buf, super->buf, super->len); | |
3016 | free(super->buf); | |
3017 | super->len = super->next_len; | |
3018 | super->buf = super->next_buf; | |
3019 | ||
3020 | super->next_len = 0; | |
3021 | super->next_buf = NULL; | |
3022 | } | |
3023 | ||
3024 | mpb = super->anchor; | |
3025 | ||
e8319a19 DW |
3026 | switch (type) { |
3027 | case update_activate_spare: { | |
3028 | struct imsm_update_activate_spare *u = (void *) update->buf; | |
949c47a0 | 3029 | struct imsm_dev *dev = get_imsm_dev(super, u->array); |
a965f303 | 3030 | struct imsm_map *map = get_imsm_map(dev, 0); |
0c046afd | 3031 | struct imsm_map *migr_map; |
e8319a19 DW |
3032 | struct active_array *a; |
3033 | struct imsm_disk *disk; | |
3034 | __u32 status; | |
0c046afd | 3035 | __u8 to_state; |
e8319a19 | 3036 | struct dl *dl; |
e8319a19 | 3037 | unsigned int found; |
0c046afd DW |
3038 | int failed; |
3039 | int victim = get_imsm_disk_idx(dev, u->slot); | |
e8319a19 DW |
3040 | int i; |
3041 | ||
3042 | for (dl = super->disks; dl; dl = dl->next) | |
d23fe947 | 3043 | if (dl == u->dl) |
e8319a19 DW |
3044 | break; |
3045 | ||
3046 | if (!dl) { | |
3047 | fprintf(stderr, "error: imsm_activate_spare passed " | |
1f24f035 DW |
3048 | "an unknown disk (index: %d)\n", |
3049 | u->dl->index); | |
e8319a19 DW |
3050 | return; |
3051 | } | |
3052 | ||
3053 | super->updates_pending++; | |
3054 | ||
0c046afd DW |
3055 | /* count failures (excluding rebuilds and the victim) |
3056 | * to determine map[0] state | |
3057 | */ | |
3058 | failed = 0; | |
3059 | for (i = 0; i < map->num_members; i++) { | |
3060 | if (i == u->slot) | |
3061 | continue; | |
3062 | disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i)); | |
3063 | if (!disk || | |
3064 | __le32_to_cpu(disk->status) & FAILED_DISK) | |
3065 | failed++; | |
3066 | } | |
3067 | ||
d23fe947 DW |
3068 | /* adding a pristine spare, assign a new index */ |
3069 | if (dl->index < 0) { | |
3070 | dl->index = super->anchor->num_disks; | |
3071 | super->anchor->num_disks++; | |
3072 | } | |
d23fe947 | 3073 | disk = &dl->disk; |
e8319a19 DW |
3074 | status = __le32_to_cpu(disk->status); |
3075 | status |= CONFIGURED_DISK; | |
b10b37b8 | 3076 | status &= ~SPARE_DISK; |
e8319a19 DW |
3077 | disk->status = __cpu_to_le32(status); |
3078 | ||
0c046afd DW |
3079 | /* mark rebuild */ |
3080 | to_state = imsm_check_degraded(super, dev, failed); | |
3081 | map->map_state = IMSM_T_STATE_DEGRADED; | |
3082 | migrate(dev, to_state, 1); | |
3083 | migr_map = get_imsm_map(dev, 1); | |
3084 | set_imsm_ord_tbl_ent(map, u->slot, dl->index); | |
3085 | set_imsm_ord_tbl_ent(migr_map, u->slot, dl->index | IMSM_ORD_REBUILD); | |
3086 | ||
e8319a19 DW |
3087 | /* count arrays using the victim in the metadata */ |
3088 | found = 0; | |
3089 | for (a = st->arrays; a ; a = a->next) { | |
949c47a0 | 3090 | dev = get_imsm_dev(super, a->info.container_member); |
e8319a19 | 3091 | for (i = 0; i < map->num_members; i++) |
ff077194 | 3092 | if (victim == get_imsm_disk_idx(dev, i)) |
e8319a19 DW |
3093 | found++; |
3094 | } | |
3095 | ||
24565c9a | 3096 | /* delete the victim if it is no longer being |
e8319a19 DW |
3097 | * utilized anywhere |
3098 | */ | |
e8319a19 | 3099 | if (!found) { |
ae6aad82 | 3100 | struct dl **dlp; |
24565c9a | 3101 | |
47ee5a45 DW |
3102 | /* We know that 'manager' isn't touching anything, |
3103 | * so it is safe to delete | |
3104 | */ | |
24565c9a | 3105 | for (dlp = &super->disks; *dlp; dlp = &(*dlp)->next) |
ae6aad82 DW |
3106 | if ((*dlp)->index == victim) |
3107 | break; | |
47ee5a45 DW |
3108 | |
3109 | /* victim may be on the missing list */ | |
3110 | if (!*dlp) | |
3111 | for (dlp = &super->missing; *dlp; dlp = &(*dlp)->next) | |
3112 | if ((*dlp)->index == victim) | |
3113 | break; | |
24565c9a | 3114 | imsm_delete(super, dlp, victim); |
e8319a19 | 3115 | } |
8273f55e DW |
3116 | break; |
3117 | } | |
3118 | case update_create_array: { | |
3119 | /* someone wants to create a new array, we need to be aware of | |
3120 | * a few races/collisions: | |
3121 | * 1/ 'Create' called by two separate instances of mdadm | |
3122 | * 2/ 'Create' versus 'activate_spare': mdadm has chosen | |
3123 | * devices that have since been assimilated via | |
3124 | * activate_spare. | |
3125 | * In the event this update can not be carried out mdadm will | |
3126 | * (FIX ME) notice that its update did not take hold. | |
3127 | */ | |
3128 | struct imsm_update_create_array *u = (void *) update->buf; | |
3129 | struct imsm_dev *dev; | |
3130 | struct imsm_map *map, *new_map; | |
3131 | unsigned long long start, end; | |
3132 | unsigned long long new_start, new_end; | |
3133 | int i; | |
3134 | int overlap = 0; | |
3135 | ||
3136 | /* handle racing creates: first come first serve */ | |
3137 | if (u->dev_idx < mpb->num_raid_devs) { | |
3138 | dprintf("%s: subarray %d already defined\n", | |
3139 | __func__, u->dev_idx); | |
3140 | return; | |
3141 | } | |
3142 | ||
3143 | /* check update is next in sequence */ | |
3144 | if (u->dev_idx != mpb->num_raid_devs) { | |
6a3e913e DW |
3145 | dprintf("%s: can not create array %d expected index %d\n", |
3146 | __func__, u->dev_idx, mpb->num_raid_devs); | |
8273f55e DW |
3147 | return; |
3148 | } | |
3149 | ||
a965f303 | 3150 | new_map = get_imsm_map(&u->dev, 0); |
8273f55e DW |
3151 | new_start = __le32_to_cpu(new_map->pba_of_lba0); |
3152 | new_end = new_start + __le32_to_cpu(new_map->blocks_per_member); | |
3153 | ||
3154 | /* handle activate_spare versus create race: | |
3155 | * check to make sure that overlapping arrays do not include | |
3156 | * overalpping disks | |
3157 | */ | |
3158 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
949c47a0 | 3159 | dev = get_imsm_dev(super, i); |
a965f303 | 3160 | map = get_imsm_map(dev, 0); |
8273f55e DW |
3161 | start = __le32_to_cpu(map->pba_of_lba0); |
3162 | end = start + __le32_to_cpu(map->blocks_per_member); | |
3163 | if ((new_start >= start && new_start <= end) || | |
3164 | (start >= new_start && start <= new_end)) | |
3165 | overlap = 1; | |
ff077194 | 3166 | if (overlap && disks_overlap(dev, &u->dev)) { |
8273f55e DW |
3167 | dprintf("%s: arrays overlap\n", __func__); |
3168 | return; | |
3169 | } | |
3170 | } | |
3171 | /* check num_members sanity */ | |
3172 | if (new_map->num_members > mpb->num_disks) { | |
3173 | dprintf("%s: num_disks out of range\n", __func__); | |
3174 | return; | |
3175 | } | |
3176 | ||
949c47a0 DW |
3177 | /* check that prepare update was successful */ |
3178 | if (!update->space) { | |
3179 | dprintf("%s: prepare update failed\n", __func__); | |
3180 | return; | |
3181 | } | |
3182 | ||
8273f55e | 3183 | super->updates_pending++; |
949c47a0 | 3184 | dev = update->space; |
ff077194 | 3185 | map = get_imsm_map(dev, 0); |
949c47a0 DW |
3186 | update->space = NULL; |
3187 | imsm_copy_dev(dev, &u->dev); | |
e0783b41 | 3188 | map = get_imsm_map(dev, 0); |
949c47a0 | 3189 | super->dev_tbl[u->dev_idx] = dev; |
8273f55e | 3190 | mpb->num_raid_devs++; |
8273f55e | 3191 | |
e0783b41 | 3192 | /* fix up flags */ |
8273f55e DW |
3193 | for (i = 0; i < map->num_members; i++) { |
3194 | struct imsm_disk *disk; | |
3195 | __u32 status; | |
3196 | ||
ff077194 | 3197 | disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i)); |
8273f55e DW |
3198 | status = __le32_to_cpu(disk->status); |
3199 | status |= CONFIGURED_DISK; | |
e0783b41 | 3200 | status &= ~SPARE_DISK; |
8273f55e DW |
3201 | disk->status = __cpu_to_le32(status); |
3202 | } | |
3203 | break; | |
e8319a19 | 3204 | } |
43dad3d6 DW |
3205 | case update_add_disk: |
3206 | ||
3207 | /* we may be able to repair some arrays if disks are | |
3208 | * being added */ | |
3209 | if (super->add) { | |
3210 | struct active_array *a; | |
072b727f DW |
3211 | |
3212 | super->updates_pending++; | |
43dad3d6 DW |
3213 | for (a = st->arrays; a; a = a->next) |
3214 | a->check_degraded = 1; | |
3215 | } | |
e553d2a4 | 3216 | /* add some spares to the metadata */ |
43dad3d6 | 3217 | while (super->add) { |
e553d2a4 DW |
3218 | struct dl *al; |
3219 | ||
43dad3d6 DW |
3220 | al = super->add; |
3221 | super->add = al->next; | |
43dad3d6 DW |
3222 | al->next = super->disks; |
3223 | super->disks = al; | |
e553d2a4 DW |
3224 | dprintf("%s: added %x:%x\n", |
3225 | __func__, al->major, al->minor); | |
43dad3d6 DW |
3226 | } |
3227 | ||
3228 | break; | |
e8319a19 DW |
3229 | } |
3230 | } | |
88758e9d | 3231 | |
8273f55e DW |
3232 | static void imsm_prepare_update(struct supertype *st, |
3233 | struct metadata_update *update) | |
3234 | { | |
949c47a0 | 3235 | /** |
4d7b1503 DW |
3236 | * Allocate space to hold new disk entries, raid-device entries or a new |
3237 | * mpb if necessary. The manager synchronously waits for updates to | |
3238 | * complete in the monitor, so new mpb buffers allocated here can be | |
3239 | * integrated by the monitor thread without worrying about live pointers | |
3240 | * in the manager thread. | |
8273f55e | 3241 | */ |
949c47a0 | 3242 | enum imsm_update_type type = *(enum imsm_update_type *) update->buf; |
4d7b1503 DW |
3243 | struct intel_super *super = st->sb; |
3244 | struct imsm_super *mpb = super->anchor; | |
3245 | size_t buf_len; | |
3246 | size_t len = 0; | |
949c47a0 DW |
3247 | |
3248 | switch (type) { | |
3249 | case update_create_array: { | |
3250 | struct imsm_update_create_array *u = (void *) update->buf; | |
949c47a0 | 3251 | |
4d7b1503 | 3252 | len = sizeof_imsm_dev(&u->dev, 1); |
949c47a0 DW |
3253 | update->space = malloc(len); |
3254 | break; | |
3255 | default: | |
3256 | break; | |
3257 | } | |
3258 | } | |
8273f55e | 3259 | |
4d7b1503 DW |
3260 | /* check if we need a larger metadata buffer */ |
3261 | if (super->next_buf) | |
3262 | buf_len = super->next_len; | |
3263 | else | |
3264 | buf_len = super->len; | |
3265 | ||
3266 | if (__le32_to_cpu(mpb->mpb_size) + len > buf_len) { | |
3267 | /* ok we need a larger buf than what is currently allocated | |
3268 | * if this allocation fails process_update will notice that | |
3269 | * ->next_len is set and ->next_buf is NULL | |
3270 | */ | |
3271 | buf_len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + len, 512); | |
3272 | if (super->next_buf) | |
3273 | free(super->next_buf); | |
3274 | ||
3275 | super->next_len = buf_len; | |
3276 | if (posix_memalign(&super->next_buf, buf_len, 512) != 0) | |
3277 | super->next_buf = NULL; | |
3278 | } | |
8273f55e DW |
3279 | } |
3280 | ||
ae6aad82 | 3281 | /* must be called while manager is quiesced */ |
24565c9a | 3282 | static void imsm_delete(struct intel_super *super, struct dl **dlp, int index) |
ae6aad82 DW |
3283 | { |
3284 | struct imsm_super *mpb = super->anchor; | |
ae6aad82 DW |
3285 | struct dl *iter; |
3286 | struct imsm_dev *dev; | |
3287 | struct imsm_map *map; | |
24565c9a DW |
3288 | int i, j, num_members; |
3289 | __u32 ord; | |
ae6aad82 | 3290 | |
24565c9a DW |
3291 | dprintf("%s: deleting device[%d] from imsm_super\n", |
3292 | __func__, index); | |
ae6aad82 DW |
3293 | |
3294 | /* shift all indexes down one */ | |
3295 | for (iter = super->disks; iter; iter = iter->next) | |
24565c9a | 3296 | if (iter->index > index) |
ae6aad82 | 3297 | iter->index--; |
47ee5a45 DW |
3298 | for (iter = super->missing; iter; iter = iter->next) |
3299 | if (iter->index > index) | |
3300 | iter->index--; | |
ae6aad82 DW |
3301 | |
3302 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
3303 | dev = get_imsm_dev(super, i); | |
3304 | map = get_imsm_map(dev, 0); | |
24565c9a DW |
3305 | num_members = map->num_members; |
3306 | for (j = 0; j < num_members; j++) { | |
3307 | /* update ord entries being careful not to propagate | |
3308 | * ord-flags to the first map | |
3309 | */ | |
3310 | ord = get_imsm_ord_tbl_ent(dev, j); | |
ae6aad82 | 3311 | |
24565c9a DW |
3312 | if (ord_to_idx(ord) <= index) |
3313 | continue; | |
ae6aad82 | 3314 | |
24565c9a DW |
3315 | map = get_imsm_map(dev, 0); |
3316 | set_imsm_ord_tbl_ent(map, j, ord_to_idx(ord - 1)); | |
3317 | map = get_imsm_map(dev, 1); | |
3318 | if (map) | |
3319 | set_imsm_ord_tbl_ent(map, j, ord - 1); | |
ae6aad82 DW |
3320 | } |
3321 | } | |
3322 | ||
3323 | mpb->num_disks--; | |
3324 | super->updates_pending++; | |
24565c9a DW |
3325 | if (*dlp) { |
3326 | struct dl *dl = *dlp; | |
3327 | ||
3328 | *dlp = (*dlp)->next; | |
3329 | __free_imsm_disk(dl); | |
3330 | } | |
ae6aad82 | 3331 | } |
0e600426 | 3332 | #endif /* MDASSEMBLE */ |
ae6aad82 | 3333 | |
cdddbdbc DW |
3334 | struct superswitch super_imsm = { |
3335 | #ifndef MDASSEMBLE | |
3336 | .examine_super = examine_super_imsm, | |
3337 | .brief_examine_super = brief_examine_super_imsm, | |
3338 | .detail_super = detail_super_imsm, | |
3339 | .brief_detail_super = brief_detail_super_imsm, | |
bf5a934a | 3340 | .write_init_super = write_init_super_imsm, |
0e600426 N |
3341 | .validate_geometry = validate_geometry_imsm, |
3342 | .add_to_super = add_to_super_imsm, | |
cdddbdbc DW |
3343 | #endif |
3344 | .match_home = match_home_imsm, | |
3345 | .uuid_from_super= uuid_from_super_imsm, | |
3346 | .getinfo_super = getinfo_super_imsm, | |
3347 | .update_super = update_super_imsm, | |
3348 | ||
3349 | .avail_size = avail_size_imsm, | |
3350 | ||
3351 | .compare_super = compare_super_imsm, | |
3352 | ||
3353 | .load_super = load_super_imsm, | |
bf5a934a | 3354 | .init_super = init_super_imsm, |
cdddbdbc DW |
3355 | .store_super = store_zero_imsm, |
3356 | .free_super = free_super_imsm, | |
3357 | .match_metadata_desc = match_metadata_desc_imsm, | |
bf5a934a | 3358 | .container_content = container_content_imsm, |
cdddbdbc | 3359 | |
cdddbdbc | 3360 | .external = 1, |
845dea95 | 3361 | |
0e600426 | 3362 | #ifndef MDASSEMBLE |
845dea95 NB |
3363 | /* for mdmon */ |
3364 | .open_new = imsm_open_new, | |
3365 | .load_super = load_super_imsm, | |
ed9d66aa | 3366 | .set_array_state= imsm_set_array_state, |
845dea95 NB |
3367 | .set_disk = imsm_set_disk, |
3368 | .sync_metadata = imsm_sync_metadata, | |
88758e9d | 3369 | .activate_spare = imsm_activate_spare, |
e8319a19 | 3370 | .process_update = imsm_process_update, |
8273f55e | 3371 | .prepare_update = imsm_prepare_update, |
0e600426 | 3372 | #endif /* MDASSEMBLE */ |
cdddbdbc | 3373 | }; |