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1 | /* | |
2 | * mdadm - Intel(R) Matrix Storage Manager Support | |
3 | * | |
4 | * Copyright (C) 2002-2007 Intel Corporation | |
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 | ||
20 | #include "mdadm.h" | |
21 | #include "mdmon.h" | |
22 | #include <values.h> | |
23 | #include <scsi/sg.h> | |
24 | #include <ctype.h> | |
25 | ||
26 | /* MPB == Metadata Parameter Block */ | |
27 | #define MPB_SIGNATURE "Intel Raid ISM Cfg Sig. " | |
28 | #define MPB_SIG_LEN (strlen(MPB_SIGNATURE)) | |
29 | #define MPB_VERSION_RAID0 "1.0.00" | |
30 | #define MPB_VERSION_RAID1 "1.1.00" | |
31 | #define MPB_VERSION_RAID5 "1.2.02" | |
32 | #define MAX_SIGNATURE_LENGTH 32 | |
33 | #define MAX_RAID_SERIAL_LEN 16 | |
34 | #define MPB_SECTOR_CNT 418 | |
35 | #define IMSM_RESERVED_SECTORS 4096 | |
36 | ||
37 | /* Disk configuration info. */ | |
38 | #define IMSM_MAX_DEVICES 255 | |
39 | struct imsm_disk { | |
40 | __u8 serial[MAX_RAID_SERIAL_LEN];/* 0xD8 - 0xE7 ascii serial number */ | |
41 | __u32 total_blocks; /* 0xE8 - 0xEB total blocks */ | |
42 | __u32 scsi_id; /* 0xEC - 0xEF scsi ID */ | |
43 | __u32 status; /* 0xF0 - 0xF3 */ | |
44 | #define SPARE_DISK 0x01 /* Spare */ | |
45 | #define CONFIGURED_DISK 0x02 /* Member of some RaidDev */ | |
46 | #define FAILED_DISK 0x04 /* Permanent failure */ | |
47 | #define USABLE_DISK 0x08 /* Fully usable unless FAILED_DISK is set */ | |
48 | ||
49 | #define IMSM_DISK_FILLERS 5 | |
50 | __u32 filler[IMSM_DISK_FILLERS]; /* 0xF4 - 0x107 MPB_DISK_FILLERS for future expansion */ | |
51 | }; | |
52 | ||
53 | /* RAID map configuration infos. */ | |
54 | struct imsm_map { | |
55 | __u32 pba_of_lba0; /* start address of partition */ | |
56 | __u32 blocks_per_member;/* blocks per member */ | |
57 | __u32 num_data_stripes; /* number of data stripes */ | |
58 | __u16 blocks_per_strip; | |
59 | __u8 map_state; /* Normal, Uninitialized, Degraded, Failed */ | |
60 | #define IMSM_T_STATE_NORMAL 0 | |
61 | #define IMSM_T_STATE_UNINITIALIZED 1 | |
62 | #define IMSM_T_STATE_DEGRADED 2 /* FIXME: is this correct? */ | |
63 | #define IMSM_T_STATE_FAILED 3 /* FIXME: is this correct? */ | |
64 | __u8 raid_level; | |
65 | #define IMSM_T_RAID0 0 | |
66 | #define IMSM_T_RAID1 1 | |
67 | #define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */ | |
68 | __u8 num_members; /* number of member disks */ | |
69 | __u8 reserved[3]; | |
70 | __u32 filler[7]; /* expansion area */ | |
71 | __u32 disk_ord_tbl[1]; /* disk_ord_tbl[num_members], | |
72 | top byte special */ | |
73 | } __attribute__ ((packed)); | |
74 | ||
75 | struct imsm_vol { | |
76 | __u32 reserved[2]; | |
77 | __u8 migr_state; /* Normal or Migrating */ | |
78 | __u8 migr_type; /* Initializing, Rebuilding, ... */ | |
79 | __u8 dirty; | |
80 | __u8 fill[1]; | |
81 | __u32 filler[5]; | |
82 | struct imsm_map map[1]; | |
83 | /* here comes another one if migr_state */ | |
84 | } __attribute__ ((packed)); | |
85 | ||
86 | struct imsm_dev { | |
87 | __u8 volume[MAX_RAID_SERIAL_LEN]; | |
88 | __u32 size_low; | |
89 | __u32 size_high; | |
90 | __u32 status; /* Persistent RaidDev status */ | |
91 | __u32 reserved_blocks; /* Reserved blocks at beginning of volume */ | |
92 | #define IMSM_DEV_FILLERS 12 | |
93 | __u32 filler[IMSM_DEV_FILLERS]; | |
94 | struct imsm_vol vol; | |
95 | } __attribute__ ((packed)); | |
96 | ||
97 | struct imsm_super { | |
98 | __u8 sig[MAX_SIGNATURE_LENGTH]; /* 0x00 - 0x1F */ | |
99 | __u32 check_sum; /* 0x20 - 0x23 MPB Checksum */ | |
100 | __u32 mpb_size; /* 0x24 - 0x27 Size of MPB */ | |
101 | __u32 family_num; /* 0x28 - 0x2B Checksum from first time this config was written */ | |
102 | __u32 generation_num; /* 0x2C - 0x2F Incremented each time this array's MPB is written */ | |
103 | __u32 reserved[2]; /* 0x30 - 0x37 */ | |
104 | __u8 num_disks; /* 0x38 Number of configured disks */ | |
105 | __u8 num_raid_devs; /* 0x39 Number of configured volumes */ | |
106 | __u8 fill[2]; /* 0x3A - 0x3B */ | |
107 | #define IMSM_FILLERS 39 | |
108 | __u32 filler[IMSM_FILLERS]; /* 0x3C - 0xD7 RAID_MPB_FILLERS */ | |
109 | struct imsm_disk disk[1]; /* 0xD8 diskTbl[numDisks] */ | |
110 | /* here comes imsm_dev[num_raid_devs] */ | |
111 | } __attribute__ ((packed)); | |
112 | ||
113 | #ifndef MDASSEMBLE | |
114 | static char *map_state_str[] = { "normal", "uninitialized", "degraded", "failed" }; | |
115 | #endif | |
116 | ||
117 | static unsigned int sector_count(__u32 bytes) | |
118 | { | |
119 | return ((bytes + (512-1)) & (~(512-1))) / 512; | |
120 | } | |
121 | ||
122 | static unsigned int mpb_sectors(struct imsm_super *mpb) | |
123 | { | |
124 | return sector_count(__le32_to_cpu(mpb->mpb_size)); | |
125 | } | |
126 | ||
127 | /* internal representation of IMSM metadata */ | |
128 | struct intel_super { | |
129 | union { | |
130 | struct imsm_super *mpb; | |
131 | void *buf; | |
132 | }; | |
133 | int updates_pending; /* count of pending updates for mdmon */ | |
134 | int creating_imsm; /* flag to indicate container creation */ | |
135 | int creating_dev; /* index of raid device undergoing creation */ | |
136 | struct dl { | |
137 | struct dl *next; | |
138 | int index; | |
139 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
140 | int major, minor; | |
141 | char *devname; | |
142 | int fd; | |
143 | } *disks; | |
144 | }; | |
145 | ||
146 | struct extent { | |
147 | unsigned long long start, size; | |
148 | }; | |
149 | ||
150 | static struct supertype *match_metadata_desc_imsm(char *arg) | |
151 | { | |
152 | struct supertype *st; | |
153 | ||
154 | if (strcmp(arg, "imsm") != 0 && | |
155 | strcmp(arg, "default") != 0 | |
156 | ) | |
157 | return NULL; | |
158 | ||
159 | st = malloc(sizeof(*st)); | |
160 | memset(st, 0, sizeof(*st)); | |
161 | st->ss = &super_imsm; | |
162 | st->max_devs = IMSM_MAX_DEVICES; | |
163 | st->minor_version = 0; | |
164 | st->sb = NULL; | |
165 | return st; | |
166 | } | |
167 | ||
168 | static struct supertype *match_metadata_desc_imsm_volume(char *arg) | |
169 | { | |
170 | struct supertype *st; | |
171 | ||
172 | if (strcmp(arg, "imsm/volume") != 0 && | |
173 | strcmp(arg, "raid") != 0 && | |
174 | strcmp(arg, "default") != 0 | |
175 | ) | |
176 | return NULL; | |
177 | ||
178 | st = malloc(sizeof(*st)); | |
179 | memset(st, 0, sizeof(*st)); | |
180 | st->ss = &super_imsm_volume; | |
181 | st->max_devs = IMSM_MAX_DEVICES; | |
182 | st->minor_version = 0; | |
183 | st->sb = NULL; | |
184 | return st; | |
185 | } | |
186 | ||
187 | static __u8 *get_imsm_version(struct imsm_super *mpb) | |
188 | { | |
189 | return &mpb->sig[MPB_SIG_LEN]; | |
190 | } | |
191 | ||
192 | static struct imsm_disk *get_imsm_disk(struct imsm_super *mpb, __u8 index) | |
193 | { | |
194 | if (index > mpb->num_disks - 1) | |
195 | return NULL; | |
196 | return &mpb->disk[index]; | |
197 | } | |
198 | ||
199 | static __u32 gen_imsm_checksum(struct imsm_super *mpb) | |
200 | { | |
201 | __u32 end = mpb->mpb_size / sizeof(end); | |
202 | __u32 *p = (__u32 *) mpb; | |
203 | __u32 sum = 0; | |
204 | ||
205 | while (end--) | |
206 | sum += __le32_to_cpu(*p++); | |
207 | ||
208 | return sum - __le32_to_cpu(mpb->check_sum); | |
209 | } | |
210 | ||
211 | static size_t sizeof_imsm_dev(struct imsm_dev *dev) | |
212 | { | |
213 | size_t size = sizeof(*dev); | |
214 | ||
215 | /* each map has disk_ord_tbl[num_members - 1] additional space */ | |
216 | size += sizeof(__u32) * (dev->vol.map[0].num_members - 1); | |
217 | ||
218 | /* migrating means an additional map */ | |
219 | if (dev->vol.migr_state) { | |
220 | size += sizeof(struct imsm_map); | |
221 | size += sizeof(__u32) * (dev->vol.map[1].num_members - 1); | |
222 | } | |
223 | ||
224 | return size; | |
225 | } | |
226 | ||
227 | static struct imsm_dev *get_imsm_dev(struct imsm_super *mpb, __u8 index) | |
228 | { | |
229 | int offset; | |
230 | int i; | |
231 | void *_mpb = mpb; | |
232 | ||
233 | if (index > mpb->num_raid_devs - 1) | |
234 | return NULL; | |
235 | ||
236 | /* devices start after all disks */ | |
237 | offset = ((void *) &mpb->disk[mpb->num_disks]) - _mpb; | |
238 | ||
239 | for (i = 0; i <= index; i++) | |
240 | if (i == index) | |
241 | return _mpb + offset; | |
242 | else | |
243 | offset += sizeof_imsm_dev(_mpb + offset); | |
244 | ||
245 | return NULL; | |
246 | } | |
247 | ||
248 | static __u32 get_imsm_disk_idx(struct imsm_map *map, int slot) | |
249 | { | |
250 | __u32 *ord_tbl = &map->disk_ord_tbl[slot]; | |
251 | ||
252 | /* top byte is 'special' */ | |
253 | return __le32_to_cpu(*ord_tbl & ~(0xff << 24)); | |
254 | } | |
255 | ||
256 | static int get_imsm_raid_level(struct imsm_map *map) | |
257 | { | |
258 | if (map->raid_level == 1) { | |
259 | if (map->num_members == 2) | |
260 | return 1; | |
261 | else | |
262 | return 10; | |
263 | } | |
264 | ||
265 | return map->raid_level; | |
266 | } | |
267 | ||
268 | static int cmp_extent(const void *av, const void *bv) | |
269 | { | |
270 | const struct extent *a = av; | |
271 | const struct extent *b = bv; | |
272 | if (a->start < b->start) | |
273 | return -1; | |
274 | if (a->start > b->start) | |
275 | return 1; | |
276 | return 0; | |
277 | } | |
278 | ||
279 | static struct extent *get_extents(struct intel_super *super, struct dl *dl) | |
280 | { | |
281 | /* find a list of used extents on the given physical device */ | |
282 | struct imsm_super *mpb = super->mpb; | |
283 | struct imsm_disk *disk; | |
284 | struct extent *rv, *e; | |
285 | int i, j; | |
286 | int memberships = 0; | |
287 | ||
288 | disk = get_imsm_disk(mpb, dl->index); | |
289 | if (!disk) | |
290 | return NULL; | |
291 | ||
292 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
293 | struct imsm_dev *dev = get_imsm_dev(mpb, i); | |
294 | struct imsm_map *map = dev->vol.map; | |
295 | ||
296 | for (j = 0; j < map->num_members; j++) { | |
297 | __u32 index = get_imsm_disk_idx(map, j); | |
298 | ||
299 | if (index == dl->index) | |
300 | memberships++; | |
301 | } | |
302 | } | |
303 | rv = malloc(sizeof(struct extent) * (memberships + 1)); | |
304 | if (!rv) | |
305 | return NULL; | |
306 | e = rv; | |
307 | ||
308 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
309 | struct imsm_dev *dev = get_imsm_dev(mpb, i); | |
310 | struct imsm_map *map = dev->vol.map; | |
311 | ||
312 | for (j = 0; j < map->num_members; j++) { | |
313 | __u32 index = get_imsm_disk_idx(map, j); | |
314 | ||
315 | if (index == dl->index) { | |
316 | e->start = __le32_to_cpu(map->pba_of_lba0); | |
317 | e->size = __le32_to_cpu(map->blocks_per_member); | |
318 | e++; | |
319 | } | |
320 | } | |
321 | } | |
322 | qsort(rv, memberships, sizeof(*rv), cmp_extent); | |
323 | ||
324 | e->start = __le32_to_cpu(disk->total_blocks) - | |
325 | (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
326 | e->size = 0; | |
327 | return rv; | |
328 | } | |
329 | ||
330 | #ifndef MDASSEMBLE | |
331 | static void print_imsm_dev(struct imsm_dev *dev, int index) | |
332 | { | |
333 | __u64 sz; | |
334 | int slot; | |
335 | struct imsm_map *map = dev->vol.map; | |
336 | ||
337 | printf("\n"); | |
338 | printf("[%s]:\n", dev->volume); | |
339 | printf(" RAID Level : %d\n", get_imsm_raid_level(map)); | |
340 | printf(" Members : %d\n", map->num_members); | |
341 | for (slot = 0; slot < map->num_members; slot++) | |
342 | if (index == get_imsm_disk_idx(map, slot)) | |
343 | break; | |
344 | if (slot < map->num_members) | |
345 | printf(" This Slot : %d\n", slot); | |
346 | else | |
347 | printf(" This Slot : ?\n"); | |
348 | sz = __le32_to_cpu(dev->size_high); | |
349 | sz <<= 32; | |
350 | sz += __le32_to_cpu(dev->size_low); | |
351 | printf(" Array Size : %llu%s\n", (unsigned long long)sz, | |
352 | human_size(sz * 512)); | |
353 | sz = __le32_to_cpu(map->blocks_per_member); | |
354 | printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz, | |
355 | human_size(sz * 512)); | |
356 | printf(" Sector Offset : %u\n", | |
357 | __le32_to_cpu(map->pba_of_lba0)); | |
358 | printf(" Num Stripes : %u\n", | |
359 | __le32_to_cpu(map->num_data_stripes)); | |
360 | printf(" Chunk Size : %u KiB\n", | |
361 | __le16_to_cpu(map->blocks_per_strip) / 2); | |
362 | printf(" Reserved : %d\n", __le32_to_cpu(dev->reserved_blocks)); | |
363 | printf(" Migrate State : %s\n", dev->vol.migr_state ? "migrating" : "idle"); | |
364 | printf(" Dirty State : %s\n", dev->vol.dirty ? "dirty" : "clean"); | |
365 | printf(" Map State : %s\n", map_state_str[map->map_state]); | |
366 | } | |
367 | ||
368 | static void print_imsm_disk(struct imsm_super *mpb, int index) | |
369 | { | |
370 | struct imsm_disk *disk = get_imsm_disk(mpb, index); | |
371 | char str[MAX_RAID_SERIAL_LEN]; | |
372 | __u32 s; | |
373 | __u64 sz; | |
374 | ||
375 | printf("\n"); | |
376 | snprintf(str, MAX_RAID_SERIAL_LEN, "%s", disk->serial); | |
377 | printf(" Disk%02d Serial : %s\n", index, str); | |
378 | s = __le32_to_cpu(disk->status); | |
379 | printf(" State :%s%s%s%s\n", s&SPARE_DISK ? " spare" : "", | |
380 | s&CONFIGURED_DISK ? " active" : "", | |
381 | s&FAILED_DISK ? " failed" : "", | |
382 | s&USABLE_DISK ? " usable" : ""); | |
383 | printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id)); | |
384 | sz = __le32_to_cpu(disk->total_blocks) - | |
385 | (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS * mpb->num_raid_devs); | |
386 | printf(" Usable Size : %llu%s\n", (unsigned long long)sz, | |
387 | human_size(sz * 512)); | |
388 | } | |
389 | ||
390 | static void examine_super_imsm(struct supertype *st, char *homehost) | |
391 | { | |
392 | struct intel_super *super = st->sb; | |
393 | struct imsm_super *mpb = super->mpb; | |
394 | char str[MAX_SIGNATURE_LENGTH]; | |
395 | int i; | |
396 | __u32 sum; | |
397 | ||
398 | snprintf(str, MPB_SIG_LEN, "%s", mpb->sig); | |
399 | printf(" Magic : %s\n", str); | |
400 | snprintf(str, strlen(MPB_VERSION_RAID0), "%s", get_imsm_version(mpb)); | |
401 | printf(" Version : %s\n", get_imsm_version(mpb)); | |
402 | printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num)); | |
403 | printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num)); | |
404 | sum = __le32_to_cpu(mpb->check_sum); | |
405 | printf(" Checksum : %08x %s\n", sum, | |
406 | gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect"); | |
407 | printf(" MPB Sectors : %d\n", mpb_sectors(mpb)); | |
408 | printf(" Disks : %d\n", mpb->num_disks); | |
409 | printf(" RAID Devices : %d\n", mpb->num_raid_devs); | |
410 | print_imsm_disk(mpb, super->disks->index); | |
411 | for (i = 0; i < mpb->num_raid_devs; i++) | |
412 | print_imsm_dev(get_imsm_dev(mpb, i), super->disks->index); | |
413 | for (i = 0; i < mpb->num_disks; i++) { | |
414 | if (i == super->disks->index) | |
415 | continue; | |
416 | print_imsm_disk(mpb, i); | |
417 | } | |
418 | } | |
419 | ||
420 | static void brief_examine_super_imsm(struct supertype *st) | |
421 | { | |
422 | struct intel_super *super = st->sb; | |
423 | struct imsm_super *mpb = super->mpb; | |
424 | ||
425 | printf("ARRAY /dev/imsm family=%08x metadata=external:imsm\n", | |
426 | __le32_to_cpu(mpb->family_num)); | |
427 | } | |
428 | ||
429 | static void detail_super_imsm(struct supertype *st, char *homehost) | |
430 | { | |
431 | printf("%s\n", __FUNCTION__); | |
432 | } | |
433 | ||
434 | static void brief_detail_super_imsm(struct supertype *st) | |
435 | { | |
436 | printf("%s\n", __FUNCTION__); | |
437 | } | |
438 | #endif | |
439 | ||
440 | static int match_home_imsm(struct supertype *st, char *homehost) | |
441 | { | |
442 | printf("%s\n", __FUNCTION__); | |
443 | ||
444 | return 0; | |
445 | } | |
446 | ||
447 | static void uuid_from_super_imsm(struct supertype *st, int uuid[4]) | |
448 | { | |
449 | printf("%s\n", __FUNCTION__); | |
450 | } | |
451 | ||
452 | static void | |
453 | get_imsm_numerical_version(struct imsm_super *mpb, int *m, int *p) | |
454 | { | |
455 | __u8 *v = get_imsm_version(mpb); | |
456 | __u8 *end = mpb->sig + MAX_SIGNATURE_LENGTH; | |
457 | char major[] = { 0, 0, 0 }; | |
458 | char minor[] = { 0 ,0, 0 }; | |
459 | char patch[] = { 0, 0, 0 }; | |
460 | char *ver_parse[] = { major, minor, patch }; | |
461 | int i, j; | |
462 | ||
463 | i = j = 0; | |
464 | while (*v != '\0' && v < end) { | |
465 | if (*v != '.' && j < 2) | |
466 | ver_parse[i][j++] = *v; | |
467 | else { | |
468 | i++; | |
469 | j = 0; | |
470 | } | |
471 | v++; | |
472 | } | |
473 | ||
474 | *m = strtol(minor, NULL, 0); | |
475 | *p = strtol(patch, NULL, 0); | |
476 | } | |
477 | ||
478 | static int imsm_level_to_layout(int level) | |
479 | { | |
480 | switch (level) { | |
481 | case 0: | |
482 | case 1: | |
483 | return 0; | |
484 | case 5: | |
485 | case 6: | |
486 | return ALGORITHM_LEFT_SYMMETRIC; | |
487 | case 10: | |
488 | return 0x102; //FIXME is this correct? | |
489 | } | |
490 | return -1; | |
491 | } | |
492 | ||
493 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info) | |
494 | { | |
495 | struct intel_super *super = st->sb; | |
496 | struct imsm_super *mpb = super->mpb; | |
497 | struct imsm_disk *disk; | |
498 | __u32 s; | |
499 | ||
500 | info->array.major_version = 2000; | |
501 | get_imsm_numerical_version(mpb, &info->array.minor_version, | |
502 | &info->array.patch_version); | |
503 | info->array.raid_disks = mpb->num_disks; | |
504 | info->array.level = LEVEL_CONTAINER; | |
505 | info->array.layout = 0; | |
506 | info->array.md_minor = -1; | |
507 | info->array.ctime = 0; /* N/A for imsm */ | |
508 | info->array.utime = 0; | |
509 | info->array.chunk_size = 0; | |
510 | ||
511 | info->disk.major = 0; | |
512 | info->disk.minor = 0; | |
513 | info->disk.raid_disk = -1; | |
514 | info->reshape_active = 0; | |
515 | strcpy(info->text_version, "imsm"); | |
516 | info->disk.number = -1; | |
517 | info->disk.state = 0; | |
518 | ||
519 | if (super->disks) { | |
520 | info->disk.number = super->disks->index; | |
521 | info->disk.raid_disk = super->disks->index; | |
522 | disk = get_imsm_disk(mpb, super->disks->index); | |
523 | s = __le32_to_cpu(disk->status); | |
524 | info->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0; | |
525 | info->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0; | |
526 | info->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0; | |
527 | } | |
528 | } | |
529 | ||
530 | static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info) | |
531 | { | |
532 | struct intel_super *super = st->sb; | |
533 | struct imsm_super *mpb = super->mpb; | |
534 | struct imsm_dev *dev = get_imsm_dev(mpb, info->container_member); | |
535 | struct imsm_map *map = &dev->vol.map[0]; | |
536 | ||
537 | info->array.major_version = 2000; | |
538 | get_imsm_numerical_version(mpb, &info->array.minor_version, | |
539 | &info->array.patch_version); | |
540 | info->array.raid_disks = map->num_members; | |
541 | info->array.level = get_imsm_raid_level(map); | |
542 | info->array.layout = imsm_level_to_layout(info->array.level); | |
543 | info->array.md_minor = -1; | |
544 | info->array.ctime = 0; | |
545 | info->array.utime = 0; | |
546 | info->array.chunk_size = __le16_to_cpu(map->blocks_per_strip * 512); | |
547 | ||
548 | info->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
549 | info->component_size = __le32_to_cpu(map->blocks_per_member); | |
550 | ||
551 | info->disk.major = 0; | |
552 | info->disk.minor = 0; | |
553 | ||
554 | sprintf(info->text_version, "/%s/%d", | |
555 | devnum2devname(st->container_dev), | |
556 | info->container_member); | |
557 | } | |
558 | ||
559 | static int update_super_imsm(struct supertype *st, struct mdinfo *info, | |
560 | char *update, char *devname, int verbose, | |
561 | int uuid_set, char *homehost) | |
562 | { | |
563 | /* FIXME */ | |
564 | ||
565 | /* For 'assemble' and 'force' we need to return non-zero if any | |
566 | * change was made. For others, the return value is ignored. | |
567 | * Update options are: | |
568 | * force-one : This device looks a bit old but needs to be included, | |
569 | * update age info appropriately. | |
570 | * assemble: clear any 'faulty' flag to allow this device to | |
571 | * be assembled. | |
572 | * force-array: Array is degraded but being forced, mark it clean | |
573 | * if that will be needed to assemble it. | |
574 | * | |
575 | * newdev: not used ???? | |
576 | * grow: Array has gained a new device - this is currently for | |
577 | * linear only | |
578 | * resync: mark as dirty so a resync will happen. | |
579 | * name: update the name - preserving the homehost | |
580 | * | |
581 | * Following are not relevant for this imsm: | |
582 | * sparc2.2 : update from old dodgey metadata | |
583 | * super-minor: change the preferred_minor number | |
584 | * summaries: update redundant counters. | |
585 | * uuid: Change the uuid of the array to match watch is given | |
586 | * homehost: update the recorded homehost | |
587 | * _reshape_progress: record new reshape_progress position. | |
588 | */ | |
589 | int rv = 0; | |
590 | //struct intel_super *super = st->sb; | |
591 | //struct imsm_super *mpb = super->mpb; | |
592 | ||
593 | if (strcmp(update, "grow") == 0) { | |
594 | } | |
595 | if (strcmp(update, "resync") == 0) { | |
596 | /* dev->vol.dirty = 1; */ | |
597 | } | |
598 | ||
599 | /* IMSM has no concept of UUID or homehost */ | |
600 | ||
601 | return rv; | |
602 | } | |
603 | ||
604 | static size_t disks_to_mpb_size(int disks) | |
605 | { | |
606 | size_t size; | |
607 | ||
608 | size = sizeof(struct imsm_super); | |
609 | size += (disks - 1) * sizeof(struct imsm_disk); | |
610 | size += 2 * sizeof(struct imsm_dev); | |
611 | /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */ | |
612 | size += (4 - 2) * sizeof(struct imsm_map); | |
613 | /* 4 possible disk_ord_tbl's */ | |
614 | size += 4 * (disks - 1) * sizeof(__u32); | |
615 | ||
616 | return size; | |
617 | } | |
618 | ||
619 | static __u64 avail_size_imsm(struct supertype *st, __u64 devsize) | |
620 | { | |
621 | if (devsize < (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS)) | |
622 | return 0; | |
623 | ||
624 | return devsize - (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
625 | } | |
626 | ||
627 | static int compare_super_imsm(struct supertype *st, struct supertype *tst) | |
628 | { | |
629 | /* | |
630 | * return: | |
631 | * 0 same, or first was empty, and second was copied | |
632 | * 1 second had wrong number | |
633 | * 2 wrong uuid | |
634 | * 3 wrong other info | |
635 | */ | |
636 | struct intel_super *first = st->sb; | |
637 | struct intel_super *sec = tst->sb; | |
638 | ||
639 | if (!first) { | |
640 | st->sb = tst->sb; | |
641 | tst->sb = NULL; | |
642 | return 0; | |
643 | } | |
644 | ||
645 | if (memcmp(first->mpb->sig, sec->mpb->sig, MAX_SIGNATURE_LENGTH) != 0) | |
646 | return 3; | |
647 | if (first->mpb->family_num != sec->mpb->family_num) | |
648 | return 3; | |
649 | if (first->mpb->mpb_size != sec->mpb->mpb_size) | |
650 | return 3; | |
651 | if (first->mpb->check_sum != sec->mpb->check_sum) | |
652 | return 3; | |
653 | ||
654 | return 0; | |
655 | } | |
656 | ||
657 | extern int scsi_get_serial(int fd, void *buf, size_t buf_len); | |
658 | ||
659 | static int imsm_read_serial(int fd, char *devname, | |
660 | __u8 serial[MAX_RAID_SERIAL_LEN]) | |
661 | { | |
662 | unsigned char scsi_serial[255]; | |
663 | int sg_fd; | |
664 | int rv; | |
665 | int rsp_len; | |
666 | int i, cnt; | |
667 | ||
668 | memset(scsi_serial, 0, sizeof(scsi_serial)); | |
669 | ||
670 | sg_fd = sysfs_disk_to_sg(fd); | |
671 | if (sg_fd < 0) { | |
672 | if (devname) | |
673 | fprintf(stderr, | |
674 | Name ": Failed to open sg interface for %s: %s\n", | |
675 | devname, strerror(errno)); | |
676 | return 1; | |
677 | } | |
678 | ||
679 | rv = scsi_get_serial(sg_fd, scsi_serial, sizeof(scsi_serial)); | |
680 | close(sg_fd); | |
681 | ||
682 | if (rv != 0) { | |
683 | if (devname) | |
684 | fprintf(stderr, | |
685 | Name ": Failed to retrieve serial for %s\n", | |
686 | devname); | |
687 | return rv; | |
688 | } | |
689 | ||
690 | rsp_len = scsi_serial[3]; | |
691 | for (i = 0, cnt = 0; i < rsp_len; i++) { | |
692 | if (!isspace(scsi_serial[4 + i])) | |
693 | serial[cnt++] = scsi_serial[4 + i]; | |
694 | if (cnt == MAX_RAID_SERIAL_LEN) | |
695 | break; | |
696 | } | |
697 | ||
698 | serial[MAX_RAID_SERIAL_LEN - 1] = '\0'; | |
699 | ||
700 | return 0; | |
701 | } | |
702 | ||
703 | static int | |
704 | load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd) | |
705 | { | |
706 | struct imsm_super *mpb = super->mpb; | |
707 | struct dl *dl; | |
708 | struct stat stb; | |
709 | struct imsm_disk *disk; | |
710 | int rv; | |
711 | int i; | |
712 | ||
713 | dl = malloc(sizeof(*dl)); | |
714 | if (!dl) { | |
715 | if (devname) | |
716 | fprintf(stderr, | |
717 | Name ": failed to allocate disk buffer for %s\n", | |
718 | devname); | |
719 | return 2; | |
720 | } | |
721 | memset(dl, 0, sizeof(*dl)); | |
722 | ||
723 | fstat(fd, &stb); | |
724 | dl->major = major(stb.st_rdev); | |
725 | dl->minor = minor(stb.st_rdev); | |
726 | dl->next = super->disks; | |
727 | dl->fd = keep_fd ? fd : -1; | |
728 | dl->devname = devname ? strdup(devname) : NULL; | |
729 | dl->index = -1; | |
730 | super->disks = dl; | |
731 | rv = imsm_read_serial(fd, devname, dl->serial); | |
732 | ||
733 | if (rv != 0) | |
734 | return 2; | |
735 | ||
736 | /* look up this disk's index */ | |
737 | for (i = 0; i < mpb->num_disks; i++) { | |
738 | disk = get_imsm_disk(mpb, i); | |
739 | ||
740 | if (memcmp(disk->serial, dl->serial, MAX_RAID_SERIAL_LEN) == 0) | |
741 | break; | |
742 | } | |
743 | ||
744 | if (i > mpb->num_disks) | |
745 | return 2; | |
746 | ||
747 | dl->index = i; | |
748 | ||
749 | return 0; | |
750 | } | |
751 | ||
752 | /* load_imsm_mpb - read matrix metadata | |
753 | * allocates super->mpb to be freed by free_super | |
754 | */ | |
755 | static int load_imsm_mpb(int fd, struct intel_super *super, char *devname) | |
756 | { | |
757 | unsigned long long dsize; | |
758 | size_t len, mpb_size; | |
759 | unsigned long long sectors; | |
760 | struct stat; | |
761 | struct imsm_super anchor; | |
762 | __u32 check_sum; | |
763 | ||
764 | memset(super, 0, sizeof(*super)); | |
765 | get_dev_size(fd, NULL, &dsize); | |
766 | ||
767 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) { | |
768 | if (devname) | |
769 | fprintf(stderr, | |
770 | Name ": Cannot seek to anchor block on %s: %s\n", | |
771 | devname, strerror(errno)); | |
772 | return 1; | |
773 | } | |
774 | ||
775 | len = sizeof(anchor); | |
776 | if (read(fd, &anchor, len) != len) { | |
777 | if (devname) | |
778 | fprintf(stderr, | |
779 | Name ": Cannot read anchor block on %s: %s\n", | |
780 | devname, strerror(errno)); | |
781 | return 1; | |
782 | } | |
783 | ||
784 | if (strncmp((char *) anchor.sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) { | |
785 | if (devname) | |
786 | fprintf(stderr, | |
787 | Name ": no IMSM anchor on %s\n", devname); | |
788 | return 2; | |
789 | } | |
790 | ||
791 | mpb_size = __le32_to_cpu(anchor.mpb_size); | |
792 | super->mpb = malloc(mpb_size < 512 ? 512 : mpb_size); | |
793 | if (!super->mpb) { | |
794 | if (devname) | |
795 | fprintf(stderr, | |
796 | Name ": unable to allocate %zu byte mpb buffer\n", | |
797 | mpb_size); | |
798 | return 2; | |
799 | } | |
800 | memcpy(super->buf, &anchor, sizeof(anchor)); | |
801 | ||
802 | /* read the rest of the first block */ | |
803 | len = 512 - sizeof(anchor); | |
804 | if (read(fd, super->buf + sizeof(anchor), len) != len) { | |
805 | if (devname) | |
806 | fprintf(stderr, | |
807 | Name ": Cannot read anchor remainder on %s: %s\n", | |
808 | devname, strerror(errno)); | |
809 | return 2; | |
810 | } | |
811 | ||
812 | sectors = mpb_sectors(&anchor) - 1; | |
813 | if (!sectors) | |
814 | return load_imsm_disk(fd, super, devname, 0); | |
815 | ||
816 | /* read the extended mpb */ | |
817 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) { | |
818 | if (devname) | |
819 | fprintf(stderr, | |
820 | Name ": Cannot seek to extended mpb on %s: %s\n", | |
821 | devname, strerror(errno)); | |
822 | return 1; | |
823 | } | |
824 | ||
825 | len = mpb_size - 512; | |
826 | if (read(fd, super->buf + 512, len) != len) { | |
827 | if (devname) | |
828 | fprintf(stderr, | |
829 | Name ": Cannot read extended mpb on %s: %s\n", | |
830 | devname, strerror(errno)); | |
831 | return 2; | |
832 | } | |
833 | ||
834 | check_sum = gen_imsm_checksum(super->mpb); | |
835 | if (check_sum != __le32_to_cpu(super->mpb->check_sum)) { | |
836 | if (devname) | |
837 | fprintf(stderr, | |
838 | Name ": IMSM checksum %x != %x on %s\n", | |
839 | check_sum, __le32_to_cpu(super->mpb->check_sum), | |
840 | devname); | |
841 | return 2; | |
842 | } | |
843 | ||
844 | return load_imsm_disk(fd, super, devname, 0); | |
845 | } | |
846 | ||
847 | struct superswitch super_imsm_container; | |
848 | ||
849 | static void free_imsm_disks(struct intel_super *super) | |
850 | { | |
851 | while (super->disks) { | |
852 | struct dl *d = super->disks; | |
853 | ||
854 | super->disks = d->next; | |
855 | if (d->fd >= 0) | |
856 | close(d->fd); | |
857 | if (d->devname) | |
858 | free(d->devname); | |
859 | free(d); | |
860 | } | |
861 | } | |
862 | ||
863 | static void free_imsm(struct intel_super *super) | |
864 | { | |
865 | if (super->mpb) | |
866 | free(super->mpb); | |
867 | free_imsm_disks(super); | |
868 | free(super); | |
869 | } | |
870 | ||
871 | ||
872 | static void free_super_imsm(struct supertype *st) | |
873 | { | |
874 | struct intel_super *super = st->sb; | |
875 | ||
876 | if (!super) | |
877 | return; | |
878 | ||
879 | free_imsm(super); | |
880 | st->sb = NULL; | |
881 | } | |
882 | ||
883 | static struct intel_super *alloc_super(int creating_imsm) | |
884 | { | |
885 | struct intel_super *super = malloc(sizeof(*super)); | |
886 | ||
887 | if (super) { | |
888 | memset(super, 0, sizeof(*super)); | |
889 | super->creating_imsm = creating_imsm; | |
890 | super->creating_dev = -1; | |
891 | } | |
892 | ||
893 | return super; | |
894 | } | |
895 | ||
896 | #ifndef MDASSEMBLE | |
897 | static int load_super_imsm_all(struct supertype *st, int fd, void **sbp, | |
898 | char *devname, int keep_fd) | |
899 | { | |
900 | struct mdinfo *sra; | |
901 | struct intel_super *super; | |
902 | struct mdinfo *sd, *best = NULL; | |
903 | __u32 bestgen = 0; | |
904 | __u32 gen; | |
905 | char nm[20]; | |
906 | int dfd; | |
907 | int rv; | |
908 | ||
909 | /* check if this disk is a member of an active array */ | |
910 | sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE); | |
911 | if (!sra) | |
912 | return 1; | |
913 | ||
914 | if (sra->array.major_version != -1 || | |
915 | sra->array.minor_version != -2 || | |
916 | strcmp(sra->text_version, "imsm") != 0) | |
917 | return 1; | |
918 | ||
919 | super = alloc_super(0); | |
920 | if (!super) | |
921 | return 1; | |
922 | ||
923 | /* find the most up to date disk in this array */ | |
924 | for (sd = sra->devs; sd; sd = sd->next) { | |
925 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
926 | dfd = dev_open(nm, keep_fd ? O_RDWR : O_RDONLY); | |
927 | if (!dfd) { | |
928 | free_imsm(super); | |
929 | return 2; | |
930 | } | |
931 | rv = load_imsm_mpb(dfd, super, NULL); | |
932 | if (!keep_fd) | |
933 | close(dfd); | |
934 | if (rv == 0) { | |
935 | gen = __le32_to_cpu(super->mpb->generation_num); | |
936 | if (!best || gen > bestgen) { | |
937 | bestgen = gen; | |
938 | best = sd; | |
939 | } | |
940 | } else { | |
941 | free_imsm(super); | |
942 | return 2; | |
943 | } | |
944 | } | |
945 | ||
946 | if (!best) { | |
947 | free_imsm(super); | |
948 | return 1; | |
949 | } | |
950 | ||
951 | /* load the most up to date anchor */ | |
952 | sprintf(nm, "%d:%d", best->disk.major, best->disk.minor); | |
953 | dfd = dev_open(nm, O_RDONLY); | |
954 | if (!dfd) { | |
955 | free_imsm(super); | |
956 | return 1; | |
957 | } | |
958 | rv = load_imsm_mpb(dfd, super, NULL); | |
959 | close(dfd); | |
960 | if (rv != 0) { | |
961 | free_imsm(super); | |
962 | return 2; | |
963 | } | |
964 | ||
965 | /* reset the disk list */ | |
966 | free_imsm_disks(super); | |
967 | ||
968 | /* populate disk list */ | |
969 | for (sd = sra->devs ; sd ; sd = sd->next) { | |
970 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
971 | dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY); | |
972 | if (!dfd) { | |
973 | free_imsm(super); | |
974 | return 2; | |
975 | } | |
976 | load_imsm_disk(dfd, super, NULL, keep_fd); | |
977 | if (!keep_fd) | |
978 | close(dfd); | |
979 | } | |
980 | ||
981 | *sbp = super; | |
982 | if (st->ss == NULL) { | |
983 | st->ss = &super_imsm_container; | |
984 | st->minor_version = 0; | |
985 | st->max_devs = IMSM_MAX_DEVICES; | |
986 | st->container_dev = fd2devnum(fd); | |
987 | } | |
988 | ||
989 | return 0; | |
990 | } | |
991 | #endif | |
992 | ||
993 | static int load_super_imsm(struct supertype *st, int fd, char *devname) | |
994 | { | |
995 | struct intel_super *super; | |
996 | int rv; | |
997 | ||
998 | #ifndef MDASSEMBLE | |
999 | if (load_super_imsm_all(st, fd, &st->sb, devname, 1) == 0) | |
1000 | return 0; | |
1001 | #endif | |
1002 | ||
1003 | super = alloc_super(0); | |
1004 | if (!super) { | |
1005 | fprintf(stderr, | |
1006 | Name ": malloc of %zu failed.\n", | |
1007 | sizeof(*super)); | |
1008 | return 1; | |
1009 | } | |
1010 | ||
1011 | rv = load_imsm_mpb(fd, super, devname); | |
1012 | ||
1013 | if (rv) { | |
1014 | if (devname) | |
1015 | fprintf(stderr, | |
1016 | Name ": Failed to load all information " | |
1017 | "sections on %s\n", devname); | |
1018 | free_imsm(super); | |
1019 | return rv; | |
1020 | } | |
1021 | ||
1022 | st->sb = super; | |
1023 | if (st->ss == NULL) { | |
1024 | st->ss = &super_imsm; | |
1025 | st->minor_version = 0; | |
1026 | st->max_devs = IMSM_MAX_DEVICES; | |
1027 | } | |
1028 | ||
1029 | return 0; | |
1030 | } | |
1031 | ||
1032 | static int init_zero_imsm(struct supertype *st, mdu_array_info_t *info, | |
1033 | unsigned long long size, char *name, | |
1034 | char *homehost, int *uuid) | |
1035 | { | |
1036 | st->sb = NULL; | |
1037 | return 0; | |
1038 | } | |
1039 | ||
1040 | static int init_super_imsm(struct supertype *st, mdu_array_info_t *info, | |
1041 | unsigned long long size, char *name, | |
1042 | char *homehost, int *uuid) | |
1043 | { | |
1044 | /* This is primarily called by Create when creating a new array. | |
1045 | * We will then get add_to_super called for each component, and then | |
1046 | * write_init_super called to write it out to each device. | |
1047 | * For IMSM, Create can create on fresh devices or on a pre-existing | |
1048 | * array. | |
1049 | * To create on a pre-existing array a different method will be called. | |
1050 | * This one is just for fresh drives. | |
1051 | */ | |
1052 | struct intel_super *super; | |
1053 | struct imsm_super *mpb; | |
1054 | size_t mpb_size; | |
1055 | ||
1056 | super = alloc_super(1); | |
1057 | if (!super) | |
1058 | return 0; | |
1059 | mpb_size = disks_to_mpb_size(info->nr_disks); | |
1060 | mpb = malloc(mpb_size); | |
1061 | if (!mpb) { | |
1062 | free(super); | |
1063 | return 0; | |
1064 | } | |
1065 | memset(mpb, 0, mpb_size); | |
1066 | ||
1067 | memcpy(mpb->sig, MPB_SIGNATURE, strlen(MPB_SIGNATURE)); | |
1068 | memcpy(mpb->sig + strlen(MPB_SIGNATURE), MPB_VERSION_RAID5, | |
1069 | strlen(MPB_VERSION_RAID5)); | |
1070 | mpb->mpb_size = mpb_size; | |
1071 | ||
1072 | super->mpb = mpb; | |
1073 | st->sb = super; | |
1074 | return 1; | |
1075 | } | |
1076 | ||
1077 | static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info, | |
1078 | unsigned long long size, char *name, | |
1079 | char *homehost, int *uuid) | |
1080 | { | |
1081 | /* We are creating a volume inside a pre-existing container. | |
1082 | * so st->sb is already set. | |
1083 | */ | |
1084 | struct intel_super *super = st->sb; | |
1085 | struct imsm_super *mpb = super->mpb; | |
1086 | struct imsm_dev *dev; | |
1087 | struct imsm_vol *vol; | |
1088 | struct imsm_map *map; | |
1089 | int idx = mpb->num_raid_devs; | |
1090 | int i; | |
1091 | unsigned long long array_blocks; | |
1092 | unsigned long long sz; | |
1093 | __u32 offset = 0; | |
1094 | ||
1095 | if (mpb->num_raid_devs >= 2) { | |
1096 | fprintf(stderr, Name": This imsm-container already has the " | |
1097 | "maximum of 2 volumes\n"); | |
1098 | return 0; | |
1099 | } | |
1100 | ||
1101 | super->creating_dev = idx; | |
1102 | mpb->num_raid_devs++; | |
1103 | dev = get_imsm_dev(mpb, idx); | |
1104 | strncpy((char *) dev->volume, name, MAX_RAID_SERIAL_LEN); | |
1105 | array_blocks = calc_array_size(info->level, info->raid_disks, | |
1106 | info->layout, info->chunk_size, | |
1107 | info->size*2); | |
1108 | dev->size_low = __cpu_to_le32((__u32) array_blocks); | |
1109 | dev->size_high = __cpu_to_le32((__u32) (array_blocks >> 32)); | |
1110 | dev->status = __cpu_to_le32(0); | |
1111 | dev->reserved_blocks = __cpu_to_le32(0); | |
1112 | vol = &dev->vol; | |
1113 | vol->migr_state = 0; | |
1114 | vol->migr_type = 0; | |
1115 | vol->dirty = 0; | |
1116 | for (i = 0; i < idx; i++) { | |
1117 | struct imsm_dev *prev = get_imsm_dev(mpb, i); | |
1118 | struct imsm_map *pmap = &prev->vol.map[0]; | |
1119 | ||
1120 | offset += __le32_to_cpu(pmap->blocks_per_member); | |
1121 | offset += IMSM_RESERVED_SECTORS; | |
1122 | } | |
1123 | map = &vol->map[0]; | |
1124 | map->pba_of_lba0 = __cpu_to_le32(offset); | |
1125 | sz = info->size * 2; | |
1126 | map->blocks_per_member = __cpu_to_le32(sz); | |
1127 | map->blocks_per_strip = __cpu_to_le16(info->chunk_size >> 9); | |
1128 | map->num_data_stripes = __cpu_to_le32(sz / (info->chunk_size >> 9)); | |
1129 | map->map_state = info->level ? IMSM_T_STATE_UNINITIALIZED : | |
1130 | IMSM_T_STATE_NORMAL; | |
1131 | if (info->level == 10) | |
1132 | map->raid_level = 1; | |
1133 | else | |
1134 | map->raid_level = info->level; | |
1135 | map->num_members = info->raid_disks; | |
1136 | for (i = 0; i < map->num_members; i++) { | |
1137 | /* initialized in add_to_super */ | |
1138 | map->disk_ord_tbl[i] = __cpu_to_le32(0); | |
1139 | } | |
1140 | ||
1141 | return 1; | |
1142 | } | |
1143 | ||
1144 | static void add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk, | |
1145 | int fd, char *devname) | |
1146 | { | |
1147 | struct intel_super *super = st->sb; | |
1148 | struct imsm_super *mpb = super->mpb; | |
1149 | struct imsm_disk *disk; | |
1150 | struct dl *dd; | |
1151 | unsigned long long size; | |
1152 | __u32 status, id; | |
1153 | int rv; | |
1154 | struct stat stb; | |
1155 | ||
1156 | fstat(fd, &stb); | |
1157 | dd = malloc(sizeof(*dd)); | |
1158 | if (!dd) { | |
1159 | fprintf(stderr, | |
1160 | Name ": malloc failed %s:%d.\n", __func__, __LINE__); | |
1161 | abort(); | |
1162 | } | |
1163 | memset(dd, 0, sizeof(*dd)); | |
1164 | dd->major = major(stb.st_rdev); | |
1165 | dd->minor = minor(stb.st_rdev); | |
1166 | dd->index = dk->number; | |
1167 | dd->devname = devname ? strdup(devname) : NULL; | |
1168 | dd->next = super->disks; | |
1169 | dd->fd = fd; | |
1170 | rv = imsm_read_serial(fd, devname, dd->serial); | |
1171 | if (rv) { | |
1172 | fprintf(stderr, | |
1173 | Name ": failed to retrieve scsi serial " | |
1174 | "using \'%s\' instead\n", devname); | |
1175 | strcpy((char *) dd->serial, devname); | |
1176 | } | |
1177 | ||
1178 | if (mpb->num_disks <= dk->number) | |
1179 | mpb->num_disks = dk->number + 1; | |
1180 | ||
1181 | disk = get_imsm_disk(mpb, dk->number); | |
1182 | get_dev_size(fd, NULL, &size); | |
1183 | size /= 512; | |
1184 | status = USABLE_DISK | SPARE_DISK; | |
1185 | strcpy((char *) disk->serial, (char *) dd->serial); | |
1186 | disk->total_blocks = __cpu_to_le32(size); | |
1187 | disk->status = __cpu_to_le32(status); | |
1188 | if (sysfs_disk_to_scsi_id(fd, &id) == 0) | |
1189 | disk->scsi_id = __cpu_to_le32(id); | |
1190 | else | |
1191 | disk->scsi_id = __cpu_to_le32(0); | |
1192 | ||
1193 | /* update the family number if we are creating a container */ | |
1194 | if (super->creating_imsm) | |
1195 | mpb->family_num = __cpu_to_le32(gen_imsm_checksum(mpb)); | |
1196 | ||
1197 | super->disks = dd; | |
1198 | } | |
1199 | ||
1200 | static void add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk, | |
1201 | int fd, char *devname) | |
1202 | { | |
1203 | struct intel_super *super = st->sb; | |
1204 | struct imsm_super *mpb = super->mpb; | |
1205 | struct dl *dl; | |
1206 | struct imsm_dev *dev; | |
1207 | struct imsm_map *map; | |
1208 | struct imsm_disk *disk; | |
1209 | __u32 status; | |
1210 | ||
1211 | if (super->creating_dev == -1) { | |
1212 | fprintf(stderr, Name ": no active raid device\n"); | |
1213 | abort(); | |
1214 | } | |
1215 | ||
1216 | dev = get_imsm_dev(mpb, super->creating_dev); | |
1217 | map = &dev->vol.map[0]; | |
1218 | ||
1219 | for (dl = super->disks; dl ; dl = dl->next) | |
1220 | if (dl->major == dk->major && | |
1221 | dl->minor == dk->minor) | |
1222 | break; | |
1223 | if (!dl || ! (dk->state & (1<<MD_DISK_SYNC))) | |
1224 | return; | |
1225 | ||
1226 | map->disk_ord_tbl[dk->number] = __cpu_to_le32(dl->index); | |
1227 | ||
1228 | disk = get_imsm_disk(mpb, dl->index); | |
1229 | status = CONFIGURED_DISK | USABLE_DISK; | |
1230 | disk->status = __cpu_to_le32(status); | |
1231 | } | |
1232 | ||
1233 | static int store_imsm_mpb(int fd, struct intel_super *super); | |
1234 | ||
1235 | static int write_super_imsm(struct intel_super *super, int doclose) | |
1236 | { | |
1237 | struct imsm_super *mpb = super->mpb; | |
1238 | struct dl *d; | |
1239 | __u32 generation; | |
1240 | __u32 sum; | |
1241 | ||
1242 | /* 'generation' is incremented everytime the metadata is written */ | |
1243 | generation = __le32_to_cpu(mpb->generation_num); | |
1244 | generation++; | |
1245 | mpb->generation_num = __cpu_to_le32(generation); | |
1246 | ||
1247 | /* recalculate checksum */ | |
1248 | sum = gen_imsm_checksum(mpb); | |
1249 | mpb->check_sum = __cpu_to_le32(sum); | |
1250 | ||
1251 | for (d = super->disks; d ; d = d->next) { | |
1252 | if (store_imsm_mpb(d->fd, super)) { | |
1253 | fprintf(stderr, "%s: failed for device %d:%d %s\n", | |
1254 | __func__, d->major, d->minor, strerror(errno)); | |
1255 | return 0; | |
1256 | } | |
1257 | if (doclose) { | |
1258 | close(d->fd); | |
1259 | d->fd = -1; | |
1260 | } | |
1261 | } | |
1262 | ||
1263 | return 1; | |
1264 | } | |
1265 | ||
1266 | static int write_init_super_imsm(struct supertype *st) | |
1267 | { | |
1268 | return write_super_imsm(st->sb, 1); | |
1269 | } | |
1270 | ||
1271 | static int store_zero_imsm(struct supertype *st, int fd) | |
1272 | { | |
1273 | unsigned long long dsize; | |
1274 | char buf[512]; | |
1275 | ||
1276 | get_dev_size(fd, NULL, &dsize); | |
1277 | ||
1278 | /* first block is stored on second to last sector of the disk */ | |
1279 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
1280 | return 1; | |
1281 | ||
1282 | memset(buf, 0, sizeof(buf)); | |
1283 | if (write(fd, buf, sizeof(buf)) != sizeof(buf)) | |
1284 | return 1; | |
1285 | ||
1286 | return 0; | |
1287 | } | |
1288 | ||
1289 | static void getinfo_super_n_imsm_container(struct supertype *st, struct mdinfo *info) | |
1290 | { | |
1291 | /* just need offset and size... | |
1292 | * of the metadata | |
1293 | */ | |
1294 | struct intel_super *super = st->sb; | |
1295 | struct imsm_super *mpb = super->mpb; | |
1296 | struct imsm_disk *disk = get_imsm_disk(mpb, info->disk.number); | |
1297 | ||
1298 | info->data_offset = __le32_to_cpu(disk->total_blocks) - | |
1299 | (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
1300 | info->component_size = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
1301 | } | |
1302 | ||
1303 | static void getinfo_super_n_imsm_volume(struct supertype *st, struct mdinfo *info) | |
1304 | { | |
1305 | /* Find the particular details for info->disk.raid_disk. | |
1306 | * This includes data_offset, component_size, | |
1307 | */ | |
1308 | struct intel_super *super = st->sb; | |
1309 | struct imsm_super *mpb = super->mpb; | |
1310 | struct imsm_dev *dev = get_imsm_dev(mpb, super->creating_dev); | |
1311 | struct imsm_map *map = &dev->vol.map[0]; | |
1312 | ||
1313 | info->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
1314 | info->component_size = __le32_to_cpu(map->blocks_per_member); | |
1315 | } | |
1316 | ||
1317 | static int validate_geometry_imsm(struct supertype *st, int level, int layout, | |
1318 | int raiddisks, int chunk, unsigned long long size, | |
1319 | char *dev, unsigned long long *freesize) | |
1320 | { | |
1321 | int fd, cfd; | |
1322 | struct mdinfo *sra; | |
1323 | ||
1324 | /* if given unused devices create a container | |
1325 | * if given given devices in a container create a member volume | |
1326 | */ | |
1327 | if (level == LEVEL_CONTAINER) { | |
1328 | st->ss = &super_imsm_container; | |
1329 | if (dev) { | |
1330 | /* validate the container, dev == NULL */ | |
1331 | int rv = st->ss->validate_geometry(st, level, layout, | |
1332 | raiddisks, chunk, | |
1333 | size, | |
1334 | NULL, freesize); | |
1335 | if (rv) | |
1336 | return rv; | |
1337 | } | |
1338 | return st->ss->validate_geometry(st, level, layout, raiddisks, | |
1339 | chunk, size, dev, freesize); | |
1340 | } | |
1341 | ||
1342 | if (st->sb) { | |
1343 | /* creating in a given container */ | |
1344 | st->ss = &super_imsm_volume; | |
1345 | if (dev) { | |
1346 | int rv = st->ss->validate_geometry(st, level, layout, | |
1347 | raiddisks, chunk, | |
1348 | size, | |
1349 | NULL, freesize); | |
1350 | if (rv) | |
1351 | return rv; | |
1352 | } | |
1353 | return st->ss->validate_geometry(st, level, layout, raiddisks, | |
1354 | chunk, size, dev, freesize); | |
1355 | } | |
1356 | ||
1357 | /* limit creation to the following levels */ | |
1358 | if (!dev) | |
1359 | switch (level) { | |
1360 | case 0: | |
1361 | case 1: | |
1362 | case 10: | |
1363 | case 5: | |
1364 | break; | |
1365 | default: | |
1366 | return 1; | |
1367 | } | |
1368 | ||
1369 | /* This device needs to be a device in an 'imsm' container */ | |
1370 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
1371 | if (fd >= 0) { | |
1372 | fprintf(stderr, | |
1373 | Name ": Cannot create this array on device %s\n", | |
1374 | dev); | |
1375 | close(fd); | |
1376 | return 0; | |
1377 | } | |
1378 | if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) { | |
1379 | fprintf(stderr, Name ": Cannot open %s: %s\n", | |
1380 | dev, strerror(errno)); | |
1381 | return 0; | |
1382 | } | |
1383 | /* Well, it is in use by someone, maybe an 'imsm' container. */ | |
1384 | cfd = open_container(fd); | |
1385 | if (cfd < 0) { | |
1386 | close(fd); | |
1387 | fprintf(stderr, Name ": Cannot use %s: It is busy\n", | |
1388 | dev); | |
1389 | return 0; | |
1390 | } | |
1391 | sra = sysfs_read(cfd, 0, GET_VERSION); | |
1392 | close(fd); | |
1393 | if (sra && sra->array.major_version == -1 && | |
1394 | strcmp(sra->text_version, "imsm") == 0) { | |
1395 | /* This is a member of a imsm container. Load the container | |
1396 | * and try to create a volume | |
1397 | */ | |
1398 | struct intel_super *super; | |
1399 | st->ss = &super_imsm_volume; | |
1400 | if (load_super_imsm_all(st, cfd, (void **) &super, NULL, 1) == 0) { | |
1401 | st->sb = super; | |
1402 | st->container_dev = fd2devnum(cfd); | |
1403 | close(cfd); | |
1404 | return st->ss->validate_geometry(st, level, layout, | |
1405 | raiddisks, chunk, size, | |
1406 | dev, freesize); | |
1407 | } | |
1408 | close(cfd); | |
1409 | } else /* may belong to another container */ | |
1410 | return 0; | |
1411 | ||
1412 | return 1; | |
1413 | } | |
1414 | ||
1415 | static int validate_geometry_imsm_container(struct supertype *st, int level, | |
1416 | int layout, int raiddisks, int chunk, | |
1417 | unsigned long long size, char *dev, | |
1418 | unsigned long long *freesize) | |
1419 | { | |
1420 | int fd; | |
1421 | unsigned long long ldsize; | |
1422 | ||
1423 | if (level != LEVEL_CONTAINER) | |
1424 | return 0; | |
1425 | if (!dev) | |
1426 | return 1; | |
1427 | ||
1428 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
1429 | if (fd < 0) { | |
1430 | fprintf(stderr, Name ": Cannot open %s: %s\n", | |
1431 | dev, strerror(errno)); | |
1432 | return 0; | |
1433 | } | |
1434 | if (!get_dev_size(fd, dev, &ldsize)) { | |
1435 | close(fd); | |
1436 | return 0; | |
1437 | } | |
1438 | close(fd); | |
1439 | ||
1440 | *freesize = avail_size_imsm(st, ldsize >> 9); | |
1441 | ||
1442 | return 1; | |
1443 | } | |
1444 | ||
1445 | /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd | |
1446 | * FIX ME add ahci details | |
1447 | */ | |
1448 | static int validate_geometry_imsm_volume(struct supertype *st, int level, | |
1449 | int layout, int raiddisks, int chunk, | |
1450 | unsigned long long size, char *dev, | |
1451 | unsigned long long *freesize) | |
1452 | { | |
1453 | struct stat stb; | |
1454 | struct intel_super *super = st->sb; | |
1455 | struct dl *dl; | |
1456 | unsigned long long pos = 0; | |
1457 | unsigned long long maxsize; | |
1458 | struct extent *e; | |
1459 | int i; | |
1460 | ||
1461 | if (level == LEVEL_CONTAINER) | |
1462 | return 0; | |
1463 | ||
1464 | if (level == 1 && raiddisks > 2) { | |
1465 | fprintf(stderr, Name ": imsm does not support more than 2 " | |
1466 | "in a raid1 configuration\n"); | |
1467 | return 0; | |
1468 | } | |
1469 | ||
1470 | /* We must have the container info already read in. */ | |
1471 | if (!super) | |
1472 | return 0; | |
1473 | ||
1474 | if (!dev) { | |
1475 | /* General test: make sure there is space for | |
1476 | * 'raiddisks' device extents of size 'size'. | |
1477 | */ | |
1478 | unsigned long long minsize = size*2 /* convert to blocks */; | |
1479 | int dcnt = 0; | |
1480 | if (minsize == 0) | |
1481 | minsize = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
1482 | for (dl = super->disks; dl ; dl = dl->next) { | |
1483 | int found = 0; | |
1484 | ||
1485 | i = 0; | |
1486 | e = get_extents(super, dl); | |
1487 | if (!e) continue; | |
1488 | do { | |
1489 | unsigned long long esize; | |
1490 | esize = e[i].start - pos; | |
1491 | if (esize >= minsize) | |
1492 | found = 1; | |
1493 | pos = e[i].start + e[i].size; | |
1494 | i++; | |
1495 | } while (e[i-1].size); | |
1496 | if (found) | |
1497 | dcnt++; | |
1498 | free(e); | |
1499 | } | |
1500 | if (dcnt < raiddisks) { | |
1501 | fprintf(stderr, Name ": Not enough devices with space " | |
1502 | "for this array (%d < %d)\n", | |
1503 | dcnt, raiddisks); | |
1504 | return 0; | |
1505 | } | |
1506 | return 1; | |
1507 | } | |
1508 | /* This device must be a member of the set */ | |
1509 | if (stat(dev, &stb) < 0) | |
1510 | return 0; | |
1511 | if ((S_IFMT & stb.st_mode) != S_IFBLK) | |
1512 | return 0; | |
1513 | for (dl = super->disks ; dl ; dl = dl->next) { | |
1514 | if (dl->major == major(stb.st_rdev) && | |
1515 | dl->minor == minor(stb.st_rdev)) | |
1516 | break; | |
1517 | } | |
1518 | if (!dl) { | |
1519 | fprintf(stderr, Name ": %s is not in the same imsm set\n", | |
1520 | dev); | |
1521 | return 0; | |
1522 | } | |
1523 | e = get_extents(super, dl); | |
1524 | maxsize = 0; | |
1525 | i = 0; | |
1526 | if (e) do { | |
1527 | unsigned long long esize; | |
1528 | esize = e[i].start - pos; | |
1529 | if (esize >= maxsize) | |
1530 | maxsize = esize; | |
1531 | pos = e[i].start + e[i].size; | |
1532 | i++; | |
1533 | } while (e[i-1].size); | |
1534 | *freesize = maxsize; | |
1535 | ||
1536 | return 1; | |
1537 | } | |
1538 | ||
1539 | static struct mdinfo *container_content_imsm(struct supertype *st) | |
1540 | { | |
1541 | /* Given a container loaded by load_super_imsm_all, | |
1542 | * extract information about all the arrays into | |
1543 | * an mdinfo tree. | |
1544 | * | |
1545 | * For each imsm_dev create an mdinfo, fill it in, | |
1546 | * then look for matching devices in super->disks | |
1547 | * and create appropriate device mdinfo. | |
1548 | */ | |
1549 | struct intel_super *super = st->sb; | |
1550 | struct imsm_super *mpb = super->mpb; | |
1551 | struct mdinfo *rest = NULL; | |
1552 | int i; | |
1553 | ||
1554 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
1555 | struct imsm_dev *dev = get_imsm_dev(mpb, i); | |
1556 | struct imsm_vol *vol = &dev->vol; | |
1557 | struct imsm_map *map = vol->map; | |
1558 | struct mdinfo *this; | |
1559 | __u64 sz; | |
1560 | int slot; | |
1561 | ||
1562 | this = malloc(sizeof(*this)); | |
1563 | memset(this, 0, sizeof(*this)); | |
1564 | this->next = rest; | |
1565 | rest = this; | |
1566 | ||
1567 | this->array.major_version = 2000; | |
1568 | get_imsm_numerical_version(mpb, &this->array.minor_version, | |
1569 | &this->array.patch_version); | |
1570 | this->array.level = get_imsm_raid_level(map); | |
1571 | this->array.raid_disks = map->num_members; | |
1572 | this->array.layout = imsm_level_to_layout(this->array.level); | |
1573 | this->array.md_minor = -1; | |
1574 | this->array.ctime = 0; | |
1575 | this->array.utime = 0; | |
1576 | this->array.chunk_size = __le16_to_cpu(map->blocks_per_strip) << 9; | |
1577 | this->array.state = !vol->dirty; | |
1578 | this->container_member = i; | |
1579 | if (map->map_state == IMSM_T_STATE_UNINITIALIZED || dev->vol.dirty) | |
1580 | this->resync_start = 0; | |
1581 | else | |
1582 | this->resync_start = ~0ULL; | |
1583 | ||
1584 | strncpy(this->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN); | |
1585 | this->name[MAX_RAID_SERIAL_LEN] = 0; | |
1586 | ||
1587 | sprintf(this->text_version, "/%s/%d", | |
1588 | devnum2devname(st->container_dev), | |
1589 | this->container_member); | |
1590 | ||
1591 | memset(this->uuid, 0, sizeof(this->uuid)); | |
1592 | ||
1593 | sz = __le32_to_cpu(dev->size_high); | |
1594 | sz <<= 32; | |
1595 | sz += __le32_to_cpu(dev->size_low); | |
1596 | this->component_size = sz; | |
1597 | this->array.size = this->component_size / 2; | |
1598 | ||
1599 | for (slot = 0 ; slot < map->num_members; slot++) { | |
1600 | struct imsm_disk *disk; | |
1601 | struct mdinfo *info_d; | |
1602 | struct dl *d; | |
1603 | int idx; | |
1604 | __u32 s; | |
1605 | ||
1606 | idx = __le32_to_cpu(map->disk_ord_tbl[slot] & ~(0xff << 24)); | |
1607 | for (d = super->disks; d ; d = d->next) | |
1608 | if (d->index == idx) | |
1609 | break; | |
1610 | ||
1611 | if (d == NULL) | |
1612 | break; /* shouldn't this be continue ?? */ | |
1613 | ||
1614 | info_d = malloc(sizeof(*info_d)); | |
1615 | if (!info_d) | |
1616 | break; /* ditto ?? */ | |
1617 | memset(info_d, 0, sizeof(*info_d)); | |
1618 | info_d->next = this->devs; | |
1619 | this->devs = info_d; | |
1620 | ||
1621 | disk = get_imsm_disk(mpb, idx); | |
1622 | s = __le32_to_cpu(disk->status); | |
1623 | ||
1624 | info_d->disk.number = d->index; | |
1625 | info_d->disk.major = d->major; | |
1626 | info_d->disk.minor = d->minor; | |
1627 | info_d->disk.raid_disk = slot; | |
1628 | info_d->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0; | |
1629 | info_d->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0; | |
1630 | info_d->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0; | |
1631 | ||
1632 | this->array.working_disks++; | |
1633 | ||
1634 | info_d->events = __le32_to_cpu(mpb->generation_num); | |
1635 | info_d->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
1636 | info_d->component_size = __le32_to_cpu(map->blocks_per_member); | |
1637 | if (d->devname) | |
1638 | strcpy(info_d->name, d->devname); | |
1639 | } | |
1640 | } | |
1641 | ||
1642 | return rest; | |
1643 | } | |
1644 | ||
1645 | ||
1646 | static int imsm_open_new(struct supertype *c, struct active_array *a, | |
1647 | char *inst) | |
1648 | { | |
1649 | dprintf("imsm: open_new %s\n", inst); | |
1650 | a->info.container_member = atoi(inst); | |
1651 | return 0; | |
1652 | } | |
1653 | ||
1654 | static __u8 imsm_check_degraded(struct imsm_super *mpb, int n, int failed) | |
1655 | { | |
1656 | struct imsm_dev *dev = get_imsm_dev(mpb, n); | |
1657 | struct imsm_map *map = dev->vol.map; | |
1658 | ||
1659 | if (!failed) | |
1660 | return map->map_state; | |
1661 | ||
1662 | switch (get_imsm_raid_level(map)) { | |
1663 | case 0: | |
1664 | return IMSM_T_STATE_FAILED; | |
1665 | break; | |
1666 | case 1: | |
1667 | if (failed < map->num_members) | |
1668 | return IMSM_T_STATE_DEGRADED; | |
1669 | else | |
1670 | return IMSM_T_STATE_FAILED; | |
1671 | break; | |
1672 | case 10: | |
1673 | { | |
1674 | /** | |
1675 | * check to see if any mirrors have failed, | |
1676 | * otherwise we are degraded | |
1677 | */ | |
1678 | int device_per_mirror = 2; /* FIXME is this always the case? | |
1679 | * and are they always adjacent? | |
1680 | */ | |
1681 | int failed = 0; | |
1682 | int i; | |
1683 | ||
1684 | for (i = 0; i < map->num_members; i++) { | |
1685 | int idx = get_imsm_disk_idx(map, i); | |
1686 | struct imsm_disk *disk = get_imsm_disk(mpb, idx); | |
1687 | ||
1688 | if (__le32_to_cpu(disk->status) & FAILED_DISK) | |
1689 | failed++; | |
1690 | ||
1691 | if (failed >= device_per_mirror) | |
1692 | return IMSM_T_STATE_FAILED; | |
1693 | ||
1694 | /* reset 'failed' for next mirror set */ | |
1695 | if (!((i + 1) % device_per_mirror)) | |
1696 | failed = 0; | |
1697 | } | |
1698 | ||
1699 | return IMSM_T_STATE_DEGRADED; | |
1700 | } | |
1701 | case 5: | |
1702 | if (failed < 2) | |
1703 | return IMSM_T_STATE_DEGRADED; | |
1704 | else | |
1705 | return IMSM_T_STATE_FAILED; | |
1706 | break; | |
1707 | default: | |
1708 | break; | |
1709 | } | |
1710 | ||
1711 | return map->map_state; | |
1712 | } | |
1713 | ||
1714 | static int imsm_count_failed(struct imsm_super *mpb, struct imsm_map *map) | |
1715 | { | |
1716 | int i; | |
1717 | int failed = 0; | |
1718 | struct imsm_disk *disk; | |
1719 | ||
1720 | for (i = 0; i < map->num_members; i++) { | |
1721 | int idx = get_imsm_disk_idx(map, i); | |
1722 | ||
1723 | disk = get_imsm_disk(mpb, idx); | |
1724 | if (__le32_to_cpu(disk->status) & FAILED_DISK) | |
1725 | failed++; | |
1726 | } | |
1727 | ||
1728 | return failed; | |
1729 | } | |
1730 | ||
1731 | static void imsm_set_array_state(struct active_array *a, int consistent) | |
1732 | { | |
1733 | int inst = a->info.container_member; | |
1734 | struct intel_super *super = a->container->sb; | |
1735 | struct imsm_dev *dev = get_imsm_dev(super->mpb, inst); | |
1736 | struct imsm_map *map = &dev->vol.map[0]; | |
1737 | int dirty = !consistent; | |
1738 | int failed; | |
1739 | __u8 map_state; | |
1740 | ||
1741 | if (a->resync_start == ~0ULL) { | |
1742 | failed = imsm_count_failed(super->mpb, map); | |
1743 | map_state = imsm_check_degraded(super->mpb, inst, failed); | |
1744 | if (!failed) | |
1745 | map_state = IMSM_T_STATE_NORMAL; | |
1746 | if (map->map_state != map_state) { | |
1747 | dprintf("imsm: map_state %d: %d\n", | |
1748 | inst, map_state); | |
1749 | map->map_state = map_state; | |
1750 | super->updates_pending++; | |
1751 | } | |
1752 | } | |
1753 | ||
1754 | if (dev->vol.dirty != dirty) { | |
1755 | dprintf("imsm: mark '%s' (%llu)\n", | |
1756 | dirty?"dirty":"clean", a->resync_start); | |
1757 | ||
1758 | dev->vol.dirty = dirty; | |
1759 | super->updates_pending++; | |
1760 | } | |
1761 | } | |
1762 | ||
1763 | static void imsm_set_disk(struct active_array *a, int n, int state) | |
1764 | { | |
1765 | int inst = a->info.container_member; | |
1766 | struct intel_super *super = a->container->sb; | |
1767 | struct imsm_dev *dev = get_imsm_dev(super->mpb, inst); | |
1768 | struct imsm_map *map = dev->vol.map; | |
1769 | struct imsm_disk *disk; | |
1770 | __u32 status; | |
1771 | int failed = 0; | |
1772 | int new_failure = 0; | |
1773 | ||
1774 | if (n > map->num_members) | |
1775 | fprintf(stderr, "imsm: set_disk %d out of range 0..%d\n", | |
1776 | n, map->num_members - 1); | |
1777 | ||
1778 | if (n < 0) | |
1779 | return; | |
1780 | ||
1781 | dprintf("imsm: set_disk %d:%x\n", n, state); | |
1782 | ||
1783 | disk = get_imsm_disk(super->mpb, get_imsm_disk_idx(map, n)); | |
1784 | ||
1785 | /* check if we have seen this failure before */ | |
1786 | status = __le32_to_cpu(disk->status); | |
1787 | if ((state & DS_FAULTY) && !(status & FAILED_DISK)) { | |
1788 | status |= FAILED_DISK; | |
1789 | disk->status = __cpu_to_le32(status); | |
1790 | new_failure = 1; | |
1791 | } | |
1792 | ||
1793 | /** | |
1794 | * the number of failures have changed, count up 'failed' to determine | |
1795 | * degraded / failed status | |
1796 | */ | |
1797 | if (new_failure && map->map_state != IMSM_T_STATE_FAILED) | |
1798 | failed = imsm_count_failed(super->mpb, map); | |
1799 | ||
1800 | if (failed) | |
1801 | map->map_state = imsm_check_degraded(super->mpb, inst, failed); | |
1802 | ||
1803 | if (new_failure) | |
1804 | super->updates_pending++; | |
1805 | } | |
1806 | ||
1807 | static int store_imsm_mpb(int fd, struct intel_super *super) | |
1808 | { | |
1809 | struct imsm_super *mpb = super->mpb; | |
1810 | __u32 mpb_size = __le32_to_cpu(mpb->mpb_size); | |
1811 | unsigned long long dsize; | |
1812 | unsigned long long sectors; | |
1813 | ||
1814 | get_dev_size(fd, NULL, &dsize); | |
1815 | ||
1816 | if (mpb_size > 512) { | |
1817 | /* -1 to account for anchor */ | |
1818 | sectors = mpb_sectors(mpb) - 1; | |
1819 | ||
1820 | /* write the extended mpb to the sectors preceeding the anchor */ | |
1821 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) | |
1822 | return 1; | |
1823 | ||
1824 | if (write(fd, super->buf + 512, mpb_size - 512) != mpb_size - 512) | |
1825 | return 1; | |
1826 | } | |
1827 | ||
1828 | /* first block is stored on second to last sector of the disk */ | |
1829 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
1830 | return 1; | |
1831 | ||
1832 | if (write(fd, super->buf, 512) != 512) | |
1833 | return 1; | |
1834 | ||
1835 | fsync(fd); | |
1836 | ||
1837 | return 0; | |
1838 | } | |
1839 | ||
1840 | static void imsm_sync_metadata(struct supertype *container) | |
1841 | { | |
1842 | struct intel_super *super = container->sb; | |
1843 | ||
1844 | if (!super->updates_pending) | |
1845 | return; | |
1846 | ||
1847 | write_super_imsm(super, 0); | |
1848 | ||
1849 | super->updates_pending = 0; | |
1850 | } | |
1851 | ||
1852 | struct superswitch super_imsm = { | |
1853 | #ifndef MDASSEMBLE | |
1854 | .examine_super = examine_super_imsm, | |
1855 | .brief_examine_super = brief_examine_super_imsm, | |
1856 | .detail_super = detail_super_imsm, | |
1857 | .brief_detail_super = brief_detail_super_imsm, | |
1858 | #endif | |
1859 | .match_home = match_home_imsm, | |
1860 | .uuid_from_super= uuid_from_super_imsm, | |
1861 | .getinfo_super = getinfo_super_imsm, | |
1862 | .update_super = update_super_imsm, | |
1863 | ||
1864 | .avail_size = avail_size_imsm, | |
1865 | ||
1866 | .compare_super = compare_super_imsm, | |
1867 | ||
1868 | .load_super = load_super_imsm, | |
1869 | .init_super = init_zero_imsm, | |
1870 | .store_super = store_zero_imsm, | |
1871 | .free_super = free_super_imsm, | |
1872 | .match_metadata_desc = match_metadata_desc_imsm, | |
1873 | .getinfo_super_n = getinfo_super_n_imsm_container, | |
1874 | ||
1875 | .validate_geometry = validate_geometry_imsm, | |
1876 | .major = 2000, | |
1877 | .swapuuid = 0, | |
1878 | .external = 1, | |
1879 | ||
1880 | /* for mdmon */ | |
1881 | .open_new = imsm_open_new, | |
1882 | .load_super = load_super_imsm, | |
1883 | .set_array_state= imsm_set_array_state, | |
1884 | .set_disk = imsm_set_disk, | |
1885 | .sync_metadata = imsm_sync_metadata, | |
1886 | }; | |
1887 | ||
1888 | /* super_imsm_container is set by validate_geometry_imsm when given a | |
1889 | * device that is not part of any array | |
1890 | */ | |
1891 | struct superswitch super_imsm_container = { | |
1892 | ||
1893 | .validate_geometry = validate_geometry_imsm_container, | |
1894 | .init_super = init_super_imsm, | |
1895 | .add_to_super = add_to_super_imsm, | |
1896 | .write_init_super = write_init_super_imsm, | |
1897 | .getinfo_super = getinfo_super_imsm, | |
1898 | .getinfo_super_n = getinfo_super_n_imsm_container, | |
1899 | .load_super = load_super_imsm, | |
1900 | ||
1901 | #ifndef MDASSEMBLE | |
1902 | .examine_super = examine_super_imsm, | |
1903 | .brief_examine_super = brief_examine_super_imsm, | |
1904 | .detail_super = detail_super_imsm, | |
1905 | .brief_detail_super = brief_detail_super_imsm, | |
1906 | #endif | |
1907 | ||
1908 | .free_super = free_super_imsm, | |
1909 | ||
1910 | .container_content = container_content_imsm, | |
1911 | ||
1912 | .major = 2000, | |
1913 | .swapuuid = 0, | |
1914 | .external = 1, | |
1915 | }; | |
1916 | ||
1917 | struct superswitch super_imsm_volume = { | |
1918 | .update_super = update_super_imsm, | |
1919 | .init_super = init_super_imsm_volume, | |
1920 | .add_to_super = add_to_super_imsm_volume, | |
1921 | .getinfo_super = getinfo_super_imsm_volume, | |
1922 | .getinfo_super_n = getinfo_super_n_imsm_volume, | |
1923 | .write_init_super = write_init_super_imsm, | |
1924 | ||
1925 | .load_super = load_super_imsm, | |
1926 | .free_super = free_super_imsm, | |
1927 | .match_metadata_desc = match_metadata_desc_imsm_volume, | |
1928 | ||
1929 | ||
1930 | .validate_geometry = validate_geometry_imsm_volume, | |
1931 | .major = 2001, | |
1932 | .swapuuid = 0, | |
1933 | .external = 2, | |
1934 | }; |