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cdddbdbc DW |
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" | |
c2a1e7da | 21 | #include "mdmon.h" |
cdddbdbc DW |
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 | |
c2c087e6 DW |
34 | #define MPB_SECTOR_CNT 418 |
35 | #define IMSM_RESERVED_SECTORS 4096 | |
cdddbdbc DW |
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 | ||
87eb16df | 117 | static unsigned int sector_count(__u32 bytes) |
cdddbdbc | 118 | { |
87eb16df DW |
119 | return ((bytes + (512-1)) & (~(512-1))) / 512; |
120 | } | |
cdddbdbc | 121 | |
87eb16df DW |
122 | static unsigned int mpb_sectors(struct imsm_super *mpb) |
123 | { | |
124 | return sector_count(__le32_to_cpu(mpb->mpb_size)); | |
cdddbdbc DW |
125 | } |
126 | ||
0063ecba NB |
127 | static struct superswitch super_imsm_volume; |
128 | ||
cdddbdbc DW |
129 | /* internal representation of IMSM metadata */ |
130 | struct intel_super { | |
131 | union { | |
132 | struct imsm_super *mpb; | |
133 | void *buf; | |
134 | }; | |
c2c087e6 DW |
135 | int updates_pending; /* count of pending updates for mdmon */ |
136 | int creating_imsm; /* flag to indicate container creation */ | |
137 | int creating_dev; /* index of raid device undergoing creation */ | |
cdddbdbc DW |
138 | struct dl { |
139 | struct dl *next; | |
140 | int index; | |
141 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
142 | int major, minor; | |
143 | char *devname; | |
144 | int fd; | |
145 | } *disks; | |
146 | }; | |
147 | ||
c2c087e6 DW |
148 | struct extent { |
149 | unsigned long long start, size; | |
150 | }; | |
151 | ||
cdddbdbc DW |
152 | static struct supertype *match_metadata_desc_imsm(char *arg) |
153 | { | |
154 | struct supertype *st; | |
155 | ||
156 | if (strcmp(arg, "imsm") != 0 && | |
157 | strcmp(arg, "default") != 0 | |
158 | ) | |
159 | return NULL; | |
160 | ||
161 | st = malloc(sizeof(*st)); | |
ef609477 | 162 | memset(st, 0, sizeof(*st)); |
cdddbdbc DW |
163 | st->ss = &super_imsm; |
164 | st->max_devs = IMSM_MAX_DEVICES; | |
165 | st->minor_version = 0; | |
166 | st->sb = NULL; | |
167 | return st; | |
168 | } | |
169 | ||
8b353278 | 170 | static struct supertype *match_metadata_desc_imsm_volume(char *arg) |
cdddbdbc DW |
171 | { |
172 | struct supertype *st; | |
173 | ||
8b353278 | 174 | if (strcmp(arg, "imsm/volume") != 0 && |
cdddbdbc DW |
175 | strcmp(arg, "raid") != 0 && |
176 | strcmp(arg, "default") != 0 | |
177 | ) | |
178 | return NULL; | |
179 | ||
180 | st = malloc(sizeof(*st)); | |
ef609477 | 181 | memset(st, 0, sizeof(*st)); |
8b353278 | 182 | st->ss = &super_imsm_volume; |
cdddbdbc DW |
183 | st->max_devs = IMSM_MAX_DEVICES; |
184 | st->minor_version = 0; | |
185 | st->sb = NULL; | |
186 | return st; | |
187 | } | |
188 | ||
189 | static __u8 *get_imsm_version(struct imsm_super *mpb) | |
190 | { | |
191 | return &mpb->sig[MPB_SIG_LEN]; | |
192 | } | |
193 | ||
194 | static struct imsm_disk *get_imsm_disk(struct imsm_super *mpb, __u8 index) | |
195 | { | |
196 | if (index > mpb->num_disks - 1) | |
197 | return NULL; | |
198 | return &mpb->disk[index]; | |
199 | } | |
200 | ||
201 | static __u32 gen_imsm_checksum(struct imsm_super *mpb) | |
202 | { | |
203 | __u32 end = mpb->mpb_size / sizeof(end); | |
204 | __u32 *p = (__u32 *) mpb; | |
205 | __u32 sum = 0; | |
206 | ||
207 | while (end--) | |
208 | sum += __le32_to_cpu(*p++); | |
209 | ||
210 | return sum - __le32_to_cpu(mpb->check_sum); | |
211 | } | |
212 | ||
213 | static size_t sizeof_imsm_dev(struct imsm_dev *dev) | |
214 | { | |
215 | size_t size = sizeof(*dev); | |
216 | ||
217 | /* each map has disk_ord_tbl[num_members - 1] additional space */ | |
218 | size += sizeof(__u32) * (dev->vol.map[0].num_members - 1); | |
219 | ||
220 | /* migrating means an additional map */ | |
221 | if (dev->vol.migr_state) { | |
222 | size += sizeof(struct imsm_map); | |
223 | size += sizeof(__u32) * (dev->vol.map[1].num_members - 1); | |
224 | } | |
225 | ||
226 | return size; | |
227 | } | |
228 | ||
229 | static struct imsm_dev *get_imsm_dev(struct imsm_super *mpb, __u8 index) | |
230 | { | |
231 | int offset; | |
232 | int i; | |
233 | void *_mpb = mpb; | |
234 | ||
235 | if (index > mpb->num_raid_devs - 1) | |
236 | return NULL; | |
237 | ||
238 | /* devices start after all disks */ | |
239 | offset = ((void *) &mpb->disk[mpb->num_disks]) - _mpb; | |
240 | ||
241 | for (i = 0; i <= index; i++) | |
242 | if (i == index) | |
243 | return _mpb + offset; | |
244 | else | |
245 | offset += sizeof_imsm_dev(_mpb + offset); | |
246 | ||
247 | return NULL; | |
248 | } | |
249 | ||
250 | static __u32 get_imsm_disk_idx(struct imsm_map *map, int slot) | |
251 | { | |
252 | __u32 *ord_tbl = &map->disk_ord_tbl[slot]; | |
253 | ||
254 | /* top byte is 'special' */ | |
255 | return __le32_to_cpu(*ord_tbl & ~(0xff << 24)); | |
256 | } | |
257 | ||
cdddbdbc DW |
258 | static int get_imsm_raid_level(struct imsm_map *map) |
259 | { | |
260 | if (map->raid_level == 1) { | |
261 | if (map->num_members == 2) | |
262 | return 1; | |
263 | else | |
264 | return 10; | |
265 | } | |
266 | ||
267 | return map->raid_level; | |
268 | } | |
269 | ||
c2c087e6 DW |
270 | static int cmp_extent(const void *av, const void *bv) |
271 | { | |
272 | const struct extent *a = av; | |
273 | const struct extent *b = bv; | |
274 | if (a->start < b->start) | |
275 | return -1; | |
276 | if (a->start > b->start) | |
277 | return 1; | |
278 | return 0; | |
279 | } | |
280 | ||
281 | static struct extent *get_extents(struct intel_super *super, struct dl *dl) | |
282 | { | |
283 | /* find a list of used extents on the given physical device */ | |
284 | struct imsm_super *mpb = super->mpb; | |
285 | struct imsm_disk *disk; | |
286 | struct extent *rv, *e; | |
287 | int i, j; | |
288 | int memberships = 0; | |
289 | ||
290 | disk = get_imsm_disk(mpb, dl->index); | |
291 | if (!disk) | |
292 | return NULL; | |
293 | ||
294 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
295 | struct imsm_dev *dev = get_imsm_dev(mpb, i); | |
296 | struct imsm_map *map = dev->vol.map; | |
297 | ||
298 | for (j = 0; j < map->num_members; j++) { | |
299 | __u32 index = get_imsm_disk_idx(map, j); | |
300 | ||
301 | if (index == dl->index) | |
302 | memberships++; | |
303 | } | |
304 | } | |
305 | rv = malloc(sizeof(struct extent) * (memberships + 1)); | |
306 | if (!rv) | |
307 | return NULL; | |
308 | e = rv; | |
309 | ||
310 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
311 | struct imsm_dev *dev = get_imsm_dev(mpb, i); | |
312 | struct imsm_map *map = dev->vol.map; | |
313 | ||
314 | for (j = 0; j < map->num_members; j++) { | |
315 | __u32 index = get_imsm_disk_idx(map, j); | |
316 | ||
317 | if (index == dl->index) { | |
318 | e->start = __le32_to_cpu(map->pba_of_lba0); | |
319 | e->size = __le32_to_cpu(map->blocks_per_member); | |
320 | e++; | |
321 | } | |
322 | } | |
323 | } | |
324 | qsort(rv, memberships, sizeof(*rv), cmp_extent); | |
325 | ||
326 | e->start = __le32_to_cpu(disk->total_blocks) - | |
327 | (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
328 | e->size = 0; | |
329 | return rv; | |
330 | } | |
331 | ||
4f5bc454 | 332 | #ifndef MDASSEMBLE |
cdddbdbc DW |
333 | static void print_imsm_dev(struct imsm_dev *dev, int index) |
334 | { | |
335 | __u64 sz; | |
336 | int slot; | |
337 | struct imsm_map *map = dev->vol.map; | |
338 | ||
339 | printf("\n"); | |
340 | printf("[%s]:\n", dev->volume); | |
341 | printf(" RAID Level : %d\n", get_imsm_raid_level(map)); | |
342 | printf(" Members : %d\n", map->num_members); | |
343 | for (slot = 0; slot < map->num_members; slot++) | |
344 | if (index == get_imsm_disk_idx(map, slot)) | |
345 | break; | |
346 | if (slot < map->num_members) | |
347 | printf(" This Slot : %d\n", slot); | |
348 | else | |
349 | printf(" This Slot : ?\n"); | |
350 | sz = __le32_to_cpu(dev->size_high); | |
351 | sz <<= 32; | |
352 | sz += __le32_to_cpu(dev->size_low); | |
353 | printf(" Array Size : %llu%s\n", (unsigned long long)sz, | |
354 | human_size(sz * 512)); | |
355 | sz = __le32_to_cpu(map->blocks_per_member); | |
356 | printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz, | |
357 | human_size(sz * 512)); | |
358 | printf(" Sector Offset : %u\n", | |
359 | __le32_to_cpu(map->pba_of_lba0)); | |
360 | printf(" Num Stripes : %u\n", | |
361 | __le32_to_cpu(map->num_data_stripes)); | |
362 | printf(" Chunk Size : %u KiB\n", | |
363 | __le16_to_cpu(map->blocks_per_strip) / 2); | |
364 | printf(" Reserved : %d\n", __le32_to_cpu(dev->reserved_blocks)); | |
365 | printf(" Migrate State : %s\n", dev->vol.migr_state ? "migrating" : "idle"); | |
366 | printf(" Dirty State : %s\n", dev->vol.dirty ? "dirty" : "clean"); | |
367 | printf(" Map State : %s\n", map_state_str[map->map_state]); | |
368 | } | |
369 | ||
370 | static void print_imsm_disk(struct imsm_super *mpb, int index) | |
371 | { | |
372 | struct imsm_disk *disk = get_imsm_disk(mpb, index); | |
373 | char str[MAX_RAID_SERIAL_LEN]; | |
374 | __u32 s; | |
375 | __u64 sz; | |
376 | ||
377 | printf("\n"); | |
378 | snprintf(str, MAX_RAID_SERIAL_LEN, "%s", disk->serial); | |
379 | printf(" Disk%02d Serial : %s\n", index, str); | |
380 | s = __le32_to_cpu(disk->status); | |
381 | printf(" State :%s%s%s%s\n", s&SPARE_DISK ? " spare" : "", | |
382 | s&CONFIGURED_DISK ? " active" : "", | |
383 | s&FAILED_DISK ? " failed" : "", | |
384 | s&USABLE_DISK ? " usable" : ""); | |
385 | printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id)); | |
c2c087e6 DW |
386 | sz = __le32_to_cpu(disk->total_blocks) - |
387 | (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS * mpb->num_raid_devs); | |
cdddbdbc DW |
388 | printf(" Usable Size : %llu%s\n", (unsigned long long)sz, |
389 | human_size(sz * 512)); | |
390 | } | |
391 | ||
392 | static void examine_super_imsm(struct supertype *st, char *homehost) | |
393 | { | |
394 | struct intel_super *super = st->sb; | |
395 | struct imsm_super *mpb = super->mpb; | |
396 | char str[MAX_SIGNATURE_LENGTH]; | |
397 | int i; | |
398 | __u32 sum; | |
399 | ||
400 | snprintf(str, MPB_SIG_LEN, "%s", mpb->sig); | |
401 | printf(" Magic : %s\n", str); | |
402 | snprintf(str, strlen(MPB_VERSION_RAID0), "%s", get_imsm_version(mpb)); | |
403 | printf(" Version : %s\n", get_imsm_version(mpb)); | |
404 | printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num)); | |
405 | printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num)); | |
406 | sum = __le32_to_cpu(mpb->check_sum); | |
407 | printf(" Checksum : %08x %s\n", sum, | |
408 | gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect"); | |
87eb16df | 409 | printf(" MPB Sectors : %d\n", mpb_sectors(mpb)); |
cdddbdbc DW |
410 | printf(" Disks : %d\n", mpb->num_disks); |
411 | printf(" RAID Devices : %d\n", mpb->num_raid_devs); | |
412 | print_imsm_disk(mpb, super->disks->index); | |
413 | for (i = 0; i < mpb->num_raid_devs; i++) | |
414 | print_imsm_dev(get_imsm_dev(mpb, i), super->disks->index); | |
415 | for (i = 0; i < mpb->num_disks; i++) { | |
416 | if (i == super->disks->index) | |
417 | continue; | |
418 | print_imsm_disk(mpb, i); | |
419 | } | |
420 | } | |
421 | ||
422 | static void brief_examine_super_imsm(struct supertype *st) | |
423 | { | |
424 | struct intel_super *super = st->sb; | |
425 | struct imsm_super *mpb = super->mpb; | |
426 | ||
427 | printf("ARRAY /dev/imsm family=%08x metadata=external:imsm\n", | |
428 | __le32_to_cpu(mpb->family_num)); | |
429 | } | |
430 | ||
431 | static void detail_super_imsm(struct supertype *st, char *homehost) | |
432 | { | |
433 | printf("%s\n", __FUNCTION__); | |
434 | } | |
435 | ||
436 | static void brief_detail_super_imsm(struct supertype *st) | |
437 | { | |
438 | printf("%s\n", __FUNCTION__); | |
439 | } | |
440 | #endif | |
441 | ||
442 | static int match_home_imsm(struct supertype *st, char *homehost) | |
443 | { | |
444 | printf("%s\n", __FUNCTION__); | |
445 | ||
446 | return 0; | |
447 | } | |
448 | ||
449 | static void uuid_from_super_imsm(struct supertype *st, int uuid[4]) | |
450 | { | |
451 | printf("%s\n", __FUNCTION__); | |
452 | } | |
453 | ||
0d481d37 | 454 | #if 0 |
4f5bc454 DW |
455 | static void |
456 | get_imsm_numerical_version(struct imsm_super *mpb, int *m, int *p) | |
cdddbdbc | 457 | { |
cdddbdbc DW |
458 | __u8 *v = get_imsm_version(mpb); |
459 | __u8 *end = mpb->sig + MAX_SIGNATURE_LENGTH; | |
460 | char major[] = { 0, 0, 0 }; | |
461 | char minor[] = { 0 ,0, 0 }; | |
462 | char patch[] = { 0, 0, 0 }; | |
463 | char *ver_parse[] = { major, minor, patch }; | |
464 | int i, j; | |
465 | ||
466 | i = j = 0; | |
467 | while (*v != '\0' && v < end) { | |
468 | if (*v != '.' && j < 2) | |
469 | ver_parse[i][j++] = *v; | |
470 | else { | |
471 | i++; | |
472 | j = 0; | |
473 | } | |
474 | v++; | |
475 | } | |
476 | ||
4f5bc454 DW |
477 | *m = strtol(minor, NULL, 0); |
478 | *p = strtol(patch, NULL, 0); | |
479 | } | |
0d481d37 | 480 | #endif |
4f5bc454 | 481 | |
c2c087e6 DW |
482 | static int imsm_level_to_layout(int level) |
483 | { | |
484 | switch (level) { | |
485 | case 0: | |
486 | case 1: | |
487 | return 0; | |
488 | case 5: | |
489 | case 6: | |
490 | return ALGORITHM_LEFT_SYMMETRIC; | |
491 | case 10: | |
492 | return 0x102; //FIXME is this correct? | |
493 | } | |
494 | return -1; | |
495 | } | |
496 | ||
4f5bc454 DW |
497 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info) |
498 | { | |
499 | struct intel_super *super = st->sb; | |
500 | struct imsm_super *mpb = super->mpb; | |
501 | struct imsm_disk *disk; | |
d2ca6449 | 502 | int sect = mpb_sectors(mpb); |
4f5bc454 | 503 | __u32 s; |
4f5bc454 | 504 | |
cdddbdbc DW |
505 | info->array.raid_disks = mpb->num_disks; |
506 | info->array.level = LEVEL_CONTAINER; | |
507 | info->array.layout = 0; | |
508 | info->array.md_minor = -1; | |
c2c087e6 | 509 | info->array.ctime = 0; /* N/A for imsm */ |
cdddbdbc DW |
510 | info->array.utime = 0; |
511 | info->array.chunk_size = 0; | |
512 | ||
513 | info->disk.major = 0; | |
514 | info->disk.minor = 0; | |
cdddbdbc | 515 | info->disk.raid_disk = -1; |
c2c087e6 DW |
516 | info->reshape_active = 0; |
517 | strcpy(info->text_version, "imsm"); | |
518 | info->disk.number = -1; | |
519 | info->disk.state = 0; | |
520 | ||
d2ca6449 NB |
521 | info->data_offset = __le32_to_cpu(get_imsm_disk(super->mpb, |
522 | super->disks->index) | |
523 | ->total_blocks) - (2 + sect - 1); | |
524 | info->component_size = sect; | |
525 | ||
4a04ec6c DW |
526 | if (super->disks) { |
527 | info->disk.number = super->disks->index; | |
528 | info->disk.raid_disk = super->disks->index; | |
529 | disk = get_imsm_disk(mpb, super->disks->index); | |
530 | s = __le32_to_cpu(disk->status); | |
531 | info->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0; | |
532 | info->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0; | |
533 | info->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0; | |
cdddbdbc | 534 | } |
cdddbdbc DW |
535 | } |
536 | ||
8b353278 | 537 | static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info) |
cdddbdbc | 538 | { |
c2c087e6 DW |
539 | struct intel_super *super = st->sb; |
540 | struct imsm_super *mpb = super->mpb; | |
541 | struct imsm_dev *dev = get_imsm_dev(mpb, info->container_member); | |
542 | struct imsm_map *map = &dev->vol.map[0]; | |
543 | ||
c2c087e6 DW |
544 | info->array.raid_disks = map->num_members; |
545 | info->array.level = get_imsm_raid_level(map); | |
546 | info->array.layout = imsm_level_to_layout(info->array.level); | |
547 | info->array.md_minor = -1; | |
548 | info->array.ctime = 0; | |
549 | info->array.utime = 0; | |
550 | info->array.chunk_size = __le16_to_cpu(map->blocks_per_strip * 512); | |
551 | ||
552 | info->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
553 | info->component_size = __le32_to_cpu(map->blocks_per_member); | |
554 | ||
555 | info->disk.major = 0; | |
556 | info->disk.minor = 0; | |
159c3a1a NB |
557 | |
558 | sprintf(info->text_version, "/%s/%d", | |
559 | devnum2devname(st->container_dev), | |
c2c087e6 | 560 | info->container_member); |
cdddbdbc DW |
561 | } |
562 | ||
563 | static int update_super_imsm(struct supertype *st, struct mdinfo *info, | |
564 | char *update, char *devname, int verbose, | |
565 | int uuid_set, char *homehost) | |
566 | { | |
f352c545 DW |
567 | /* FIXME */ |
568 | ||
569 | /* For 'assemble' and 'force' we need to return non-zero if any | |
570 | * change was made. For others, the return value is ignored. | |
571 | * Update options are: | |
572 | * force-one : This device looks a bit old but needs to be included, | |
573 | * update age info appropriately. | |
574 | * assemble: clear any 'faulty' flag to allow this device to | |
575 | * be assembled. | |
576 | * force-array: Array is degraded but being forced, mark it clean | |
577 | * if that will be needed to assemble it. | |
578 | * | |
579 | * newdev: not used ???? | |
580 | * grow: Array has gained a new device - this is currently for | |
581 | * linear only | |
582 | * resync: mark as dirty so a resync will happen. | |
583 | * name: update the name - preserving the homehost | |
584 | * | |
585 | * Following are not relevant for this imsm: | |
586 | * sparc2.2 : update from old dodgey metadata | |
587 | * super-minor: change the preferred_minor number | |
588 | * summaries: update redundant counters. | |
589 | * uuid: Change the uuid of the array to match watch is given | |
590 | * homehost: update the recorded homehost | |
591 | * _reshape_progress: record new reshape_progress position. | |
592 | */ | |
593 | int rv = 0; | |
594 | //struct intel_super *super = st->sb; | |
595 | //struct imsm_super *mpb = super->mpb; | |
596 | ||
597 | if (strcmp(update, "grow") == 0) { | |
598 | } | |
599 | if (strcmp(update, "resync") == 0) { | |
600 | /* dev->vol.dirty = 1; */ | |
601 | } | |
602 | ||
603 | /* IMSM has no concept of UUID or homehost */ | |
604 | ||
605 | return rv; | |
cdddbdbc DW |
606 | } |
607 | ||
c2c087e6 | 608 | static size_t disks_to_mpb_size(int disks) |
cdddbdbc | 609 | { |
c2c087e6 | 610 | size_t size; |
cdddbdbc | 611 | |
c2c087e6 DW |
612 | size = sizeof(struct imsm_super); |
613 | size += (disks - 1) * sizeof(struct imsm_disk); | |
614 | size += 2 * sizeof(struct imsm_dev); | |
615 | /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */ | |
616 | size += (4 - 2) * sizeof(struct imsm_map); | |
617 | /* 4 possible disk_ord_tbl's */ | |
618 | size += 4 * (disks - 1) * sizeof(__u32); | |
619 | ||
620 | return size; | |
621 | } | |
622 | ||
623 | static __u64 avail_size_imsm(struct supertype *st, __u64 devsize) | |
624 | { | |
625 | if (devsize < (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS)) | |
626 | return 0; | |
627 | ||
628 | return devsize - (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
cdddbdbc DW |
629 | } |
630 | ||
631 | static int compare_super_imsm(struct supertype *st, struct supertype *tst) | |
632 | { | |
633 | /* | |
634 | * return: | |
635 | * 0 same, or first was empty, and second was copied | |
636 | * 1 second had wrong number | |
637 | * 2 wrong uuid | |
638 | * 3 wrong other info | |
639 | */ | |
640 | struct intel_super *first = st->sb; | |
641 | struct intel_super *sec = tst->sb; | |
642 | ||
643 | if (!first) { | |
644 | st->sb = tst->sb; | |
645 | tst->sb = NULL; | |
646 | return 0; | |
647 | } | |
648 | ||
649 | if (memcmp(first->mpb->sig, sec->mpb->sig, MAX_SIGNATURE_LENGTH) != 0) | |
650 | return 3; | |
651 | if (first->mpb->family_num != sec->mpb->family_num) | |
652 | return 3; | |
653 | if (first->mpb->mpb_size != sec->mpb->mpb_size) | |
654 | return 3; | |
655 | if (first->mpb->check_sum != sec->mpb->check_sum) | |
656 | return 3; | |
657 | ||
658 | return 0; | |
659 | } | |
660 | ||
661 | extern int scsi_get_serial(int fd, void *buf, size_t buf_len); | |
662 | ||
663 | static int imsm_read_serial(int fd, char *devname, | |
664 | __u8 serial[MAX_RAID_SERIAL_LEN]) | |
665 | { | |
666 | unsigned char scsi_serial[255]; | |
cdddbdbc | 667 | int sg_fd; |
cdddbdbc DW |
668 | int rv; |
669 | int rsp_len; | |
670 | int i, cnt; | |
671 | ||
672 | memset(scsi_serial, 0, sizeof(scsi_serial)); | |
cdddbdbc | 673 | |
90c8b707 | 674 | sg_fd = sysfs_disk_to_sg(fd); |
cdddbdbc DW |
675 | if (sg_fd < 0) { |
676 | if (devname) | |
677 | fprintf(stderr, | |
90c8b707 DW |
678 | Name ": Failed to open sg interface for %s: %s\n", |
679 | devname, strerror(errno)); | |
cdddbdbc DW |
680 | return 1; |
681 | } | |
682 | ||
683 | rv = scsi_get_serial(sg_fd, scsi_serial, sizeof(scsi_serial)); | |
684 | close(sg_fd); | |
685 | ||
686 | if (rv != 0) { | |
687 | if (devname) | |
688 | fprintf(stderr, | |
689 | Name ": Failed to retrieve serial for %s\n", | |
690 | devname); | |
691 | return rv; | |
692 | } | |
693 | ||
694 | rsp_len = scsi_serial[3]; | |
695 | for (i = 0, cnt = 0; i < rsp_len; i++) { | |
696 | if (!isspace(scsi_serial[4 + i])) | |
697 | serial[cnt++] = scsi_serial[4 + i]; | |
698 | if (cnt == MAX_RAID_SERIAL_LEN) | |
699 | break; | |
700 | } | |
701 | ||
702 | serial[MAX_RAID_SERIAL_LEN - 1] = '\0'; | |
703 | ||
704 | return 0; | |
705 | } | |
706 | ||
707 | static int | |
708 | load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd) | |
709 | { | |
710 | struct imsm_super *mpb = super->mpb; | |
711 | struct dl *dl; | |
712 | struct stat stb; | |
713 | struct imsm_disk *disk; | |
714 | int rv; | |
715 | int i; | |
716 | ||
717 | dl = malloc(sizeof(*dl)); | |
718 | if (!dl) { | |
719 | if (devname) | |
720 | fprintf(stderr, | |
721 | Name ": failed to allocate disk buffer for %s\n", | |
722 | devname); | |
723 | return 2; | |
724 | } | |
725 | memset(dl, 0, sizeof(*dl)); | |
726 | ||
727 | fstat(fd, &stb); | |
728 | dl->major = major(stb.st_rdev); | |
729 | dl->minor = minor(stb.st_rdev); | |
730 | dl->next = super->disks; | |
731 | dl->fd = keep_fd ? fd : -1; | |
732 | dl->devname = devname ? strdup(devname) : NULL; | |
733 | dl->index = -1; | |
734 | super->disks = dl; | |
735 | rv = imsm_read_serial(fd, devname, dl->serial); | |
736 | ||
737 | if (rv != 0) | |
738 | return 2; | |
739 | ||
740 | /* look up this disk's index */ | |
741 | for (i = 0; i < mpb->num_disks; i++) { | |
742 | disk = get_imsm_disk(mpb, i); | |
743 | ||
744 | if (memcmp(disk->serial, dl->serial, MAX_RAID_SERIAL_LEN) == 0) | |
745 | break; | |
746 | } | |
747 | ||
748 | if (i > mpb->num_disks) | |
749 | return 2; | |
750 | ||
751 | dl->index = i; | |
752 | ||
753 | return 0; | |
754 | } | |
755 | ||
756 | /* load_imsm_mpb - read matrix metadata | |
757 | * allocates super->mpb to be freed by free_super | |
758 | */ | |
759 | static int load_imsm_mpb(int fd, struct intel_super *super, char *devname) | |
760 | { | |
761 | unsigned long long dsize; | |
762 | size_t len, mpb_size; | |
763 | unsigned long long sectors; | |
764 | struct stat; | |
6416d527 | 765 | struct imsm_super *anchor; |
cdddbdbc DW |
766 | __u32 check_sum; |
767 | ||
768 | memset(super, 0, sizeof(*super)); | |
769 | get_dev_size(fd, NULL, &dsize); | |
770 | ||
771 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) { | |
772 | if (devname) | |
773 | fprintf(stderr, | |
774 | Name ": Cannot seek to anchor block on %s: %s\n", | |
775 | devname, strerror(errno)); | |
776 | return 1; | |
777 | } | |
778 | ||
6416d527 NB |
779 | len = 512; |
780 | posix_memalign((void**)&anchor, 512, len); | |
781 | if (read(fd, anchor, len) != len) { | |
cdddbdbc DW |
782 | if (devname) |
783 | fprintf(stderr, | |
784 | Name ": Cannot read anchor block on %s: %s\n", | |
785 | devname, strerror(errno)); | |
6416d527 | 786 | free(anchor); |
cdddbdbc DW |
787 | return 1; |
788 | } | |
789 | ||
6416d527 | 790 | if (strncmp((char *) anchor->sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) { |
cdddbdbc DW |
791 | if (devname) |
792 | fprintf(stderr, | |
793 | Name ": no IMSM anchor on %s\n", devname); | |
6416d527 | 794 | free(anchor); |
cdddbdbc DW |
795 | return 2; |
796 | } | |
797 | ||
6416d527 NB |
798 | mpb_size = __le32_to_cpu(anchor->mpb_size); |
799 | mpb_size = ROUND_UP(mpb_size, 512); | |
800 | posix_memalign((void**)&super->mpb, 512, mpb_size); | |
cdddbdbc DW |
801 | if (!super->mpb) { |
802 | if (devname) | |
803 | fprintf(stderr, | |
804 | Name ": unable to allocate %zu byte mpb buffer\n", | |
805 | mpb_size); | |
6416d527 | 806 | free(anchor); |
cdddbdbc DW |
807 | return 2; |
808 | } | |
6416d527 | 809 | memcpy(super->buf, anchor, len); |
cdddbdbc | 810 | |
6416d527 NB |
811 | sectors = mpb_sectors(anchor) - 1; |
812 | free(anchor); | |
cdddbdbc DW |
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 | ||
c2c087e6 DW |
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 | ||
cdddbdbc DW |
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 | ||
c2c087e6 | 919 | super = alloc_super(0); |
cdddbdbc DW |
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 | ||
f7e7067b NB |
981 | if (st->subarray[0]) { |
982 | /* FIXME */ | |
983 | } | |
984 | ||
cdddbdbc DW |
985 | *sbp = super; |
986 | if (st->ss == NULL) { | |
987 | st->ss = &super_imsm_container; | |
988 | st->minor_version = 0; | |
989 | st->max_devs = IMSM_MAX_DEVICES; | |
f4d11639 | 990 | st->container_dev = fd2devnum(fd); |
cdddbdbc DW |
991 | } |
992 | ||
993 | return 0; | |
994 | } | |
995 | #endif | |
996 | ||
997 | static int load_super_imsm(struct supertype *st, int fd, char *devname) | |
998 | { | |
999 | struct intel_super *super; | |
1000 | int rv; | |
1001 | ||
1002 | #ifndef MDASSEMBLE | |
3dbccbcf | 1003 | if (load_super_imsm_all(st, fd, &st->sb, devname, 1) == 0) |
cdddbdbc DW |
1004 | return 0; |
1005 | #endif | |
f7e7067b NB |
1006 | if (st->subarray[0]) |
1007 | return 1; /* FIXME */ | |
cdddbdbc | 1008 | |
c2c087e6 | 1009 | super = alloc_super(0); |
cdddbdbc DW |
1010 | if (!super) { |
1011 | fprintf(stderr, | |
1012 | Name ": malloc of %zu failed.\n", | |
1013 | sizeof(*super)); | |
1014 | return 1; | |
1015 | } | |
1016 | ||
1017 | rv = load_imsm_mpb(fd, super, devname); | |
1018 | ||
1019 | if (rv) { | |
1020 | if (devname) | |
1021 | fprintf(stderr, | |
1022 | Name ": Failed to load all information " | |
1023 | "sections on %s\n", devname); | |
1024 | free_imsm(super); | |
1025 | return rv; | |
1026 | } | |
1027 | ||
1028 | st->sb = super; | |
1029 | if (st->ss == NULL) { | |
1030 | st->ss = &super_imsm; | |
1031 | st->minor_version = 0; | |
1032 | st->max_devs = IMSM_MAX_DEVICES; | |
1033 | } | |
1034 | ||
1035 | return 0; | |
1036 | } | |
1037 | ||
1038 | static int init_zero_imsm(struct supertype *st, mdu_array_info_t *info, | |
1039 | unsigned long long size, char *name, | |
1040 | char *homehost, int *uuid) | |
1041 | { | |
551c80c1 | 1042 | st->sb = NULL; |
cdddbdbc DW |
1043 | return 0; |
1044 | } | |
1045 | ||
1046 | static int init_super_imsm(struct supertype *st, mdu_array_info_t *info, | |
1047 | unsigned long long size, char *name, | |
1048 | char *homehost, int *uuid) | |
1049 | { | |
c2c087e6 DW |
1050 | /* This is primarily called by Create when creating a new array. |
1051 | * We will then get add_to_super called for each component, and then | |
1052 | * write_init_super called to write it out to each device. | |
1053 | * For IMSM, Create can create on fresh devices or on a pre-existing | |
1054 | * array. | |
1055 | * To create on a pre-existing array a different method will be called. | |
1056 | * This one is just for fresh drives. | |
1057 | */ | |
1058 | struct intel_super *super; | |
1059 | struct imsm_super *mpb; | |
1060 | size_t mpb_size; | |
cdddbdbc | 1061 | |
c2c087e6 DW |
1062 | super = alloc_super(1); |
1063 | if (!super) | |
1064 | return 0; | |
1065 | mpb_size = disks_to_mpb_size(info->nr_disks); | |
6416d527 | 1066 | posix_memalign((void**)&mpb, 512, mpb_size); |
c2c087e6 DW |
1067 | if (!mpb) { |
1068 | free(super); | |
1069 | return 0; | |
1070 | } | |
1071 | memset(mpb, 0, mpb_size); | |
1072 | ||
1073 | memcpy(mpb->sig, MPB_SIGNATURE, strlen(MPB_SIGNATURE)); | |
1074 | memcpy(mpb->sig + strlen(MPB_SIGNATURE), MPB_VERSION_RAID5, | |
1075 | strlen(MPB_VERSION_RAID5)); | |
1076 | mpb->mpb_size = mpb_size; | |
1077 | ||
1078 | super->mpb = mpb; | |
1079 | st->sb = super; | |
1080 | return 1; | |
cdddbdbc DW |
1081 | } |
1082 | ||
8b353278 DW |
1083 | static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info, |
1084 | unsigned long long size, char *name, | |
1085 | char *homehost, int *uuid) | |
cdddbdbc | 1086 | { |
c2c087e6 DW |
1087 | /* We are creating a volume inside a pre-existing container. |
1088 | * so st->sb is already set. | |
1089 | */ | |
1090 | struct intel_super *super = st->sb; | |
1091 | struct imsm_super *mpb = super->mpb; | |
1092 | struct imsm_dev *dev; | |
1093 | struct imsm_vol *vol; | |
1094 | struct imsm_map *map; | |
1095 | int idx = mpb->num_raid_devs; | |
1096 | int i; | |
1097 | unsigned long long array_blocks; | |
1098 | unsigned long long sz; | |
1099 | __u32 offset = 0; | |
cdddbdbc | 1100 | |
c2c087e6 DW |
1101 | if (mpb->num_raid_devs >= 2) { |
1102 | fprintf(stderr, Name": This imsm-container already has the " | |
1103 | "maximum of 2 volumes\n"); | |
1104 | return 0; | |
1105 | } | |
1106 | ||
1107 | super->creating_dev = idx; | |
1108 | mpb->num_raid_devs++; | |
1109 | dev = get_imsm_dev(mpb, idx); | |
1110 | strncpy((char *) dev->volume, name, MAX_RAID_SERIAL_LEN); | |
1111 | array_blocks = calc_array_size(info->level, info->raid_disks, | |
1112 | info->layout, info->chunk_size, | |
1113 | info->size*2); | |
1114 | dev->size_low = __cpu_to_le32((__u32) array_blocks); | |
1115 | dev->size_high = __cpu_to_le32((__u32) (array_blocks >> 32)); | |
1116 | dev->status = __cpu_to_le32(0); | |
1117 | dev->reserved_blocks = __cpu_to_le32(0); | |
1118 | vol = &dev->vol; | |
1119 | vol->migr_state = 0; | |
1120 | vol->migr_type = 0; | |
1121 | vol->dirty = 0; | |
1122 | for (i = 0; i < idx; i++) { | |
1123 | struct imsm_dev *prev = get_imsm_dev(mpb, i); | |
1124 | struct imsm_map *pmap = &prev->vol.map[0]; | |
1125 | ||
1126 | offset += __le32_to_cpu(pmap->blocks_per_member); | |
1127 | offset += IMSM_RESERVED_SECTORS; | |
1128 | } | |
1129 | map = &vol->map[0]; | |
1130 | map->pba_of_lba0 = __cpu_to_le32(offset); | |
1131 | sz = info->size * 2; | |
1132 | map->blocks_per_member = __cpu_to_le32(sz); | |
1133 | map->blocks_per_strip = __cpu_to_le16(info->chunk_size >> 9); | |
1134 | map->num_data_stripes = __cpu_to_le32(sz / (info->chunk_size >> 9)); | |
1135 | map->map_state = info->level ? IMSM_T_STATE_UNINITIALIZED : | |
1136 | IMSM_T_STATE_NORMAL; | |
1137 | if (info->level == 10) | |
1138 | map->raid_level = 1; | |
1139 | else | |
1140 | map->raid_level = info->level; | |
1141 | map->num_members = info->raid_disks; | |
1142 | for (i = 0; i < map->num_members; i++) { | |
1143 | /* initialized in add_to_super */ | |
1144 | map->disk_ord_tbl[i] = __cpu_to_le32(0); | |
1145 | } | |
1146 | ||
1147 | return 1; | |
cdddbdbc DW |
1148 | } |
1149 | ||
c2c087e6 | 1150 | static void add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk, |
cdddbdbc DW |
1151 | int fd, char *devname) |
1152 | { | |
c2c087e6 DW |
1153 | struct intel_super *super = st->sb; |
1154 | struct imsm_super *mpb = super->mpb; | |
1155 | struct imsm_disk *disk; | |
1156 | struct dl *dd; | |
1157 | unsigned long long size; | |
1158 | __u32 status, id; | |
1159 | int rv; | |
1160 | struct stat stb; | |
1161 | ||
1162 | fstat(fd, &stb); | |
1163 | dd = malloc(sizeof(*dd)); | |
1164 | if (!dd) { | |
1165 | fprintf(stderr, | |
1166 | Name ": malloc failed %s:%d.\n", __func__, __LINE__); | |
1167 | abort(); | |
1168 | } | |
1169 | memset(dd, 0, sizeof(*dd)); | |
1170 | dd->major = major(stb.st_rdev); | |
1171 | dd->minor = minor(stb.st_rdev); | |
1172 | dd->index = dk->number; | |
1173 | dd->devname = devname ? strdup(devname) : NULL; | |
1174 | dd->next = super->disks; | |
1175 | dd->fd = fd; | |
1176 | rv = imsm_read_serial(fd, devname, dd->serial); | |
1177 | if (rv) { | |
1178 | fprintf(stderr, | |
1179 | Name ": failed to retrieve scsi serial " | |
1180 | "using \'%s\' instead\n", devname); | |
1181 | strcpy((char *) dd->serial, devname); | |
1182 | } | |
1183 | ||
1184 | if (mpb->num_disks <= dk->number) | |
1185 | mpb->num_disks = dk->number + 1; | |
1186 | ||
1187 | disk = get_imsm_disk(mpb, dk->number); | |
1188 | get_dev_size(fd, NULL, &size); | |
1189 | size /= 512; | |
1190 | status = USABLE_DISK | SPARE_DISK; | |
1191 | strcpy((char *) disk->serial, (char *) dd->serial); | |
1192 | disk->total_blocks = __cpu_to_le32(size); | |
1193 | disk->status = __cpu_to_le32(status); | |
1194 | if (sysfs_disk_to_scsi_id(fd, &id) == 0) | |
1195 | disk->scsi_id = __cpu_to_le32(id); | |
1196 | else | |
1197 | disk->scsi_id = __cpu_to_le32(0); | |
1198 | ||
1199 | /* update the family number if we are creating a container */ | |
1200 | if (super->creating_imsm) | |
1201 | mpb->family_num = __cpu_to_le32(gen_imsm_checksum(mpb)); | |
1202 | ||
1203 | super->disks = dd; | |
cdddbdbc DW |
1204 | } |
1205 | ||
c2c087e6 | 1206 | static void add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk, |
8b353278 | 1207 | int fd, char *devname) |
cdddbdbc | 1208 | { |
c2c087e6 DW |
1209 | struct intel_super *super = st->sb; |
1210 | struct imsm_super *mpb = super->mpb; | |
1211 | struct dl *dl; | |
1212 | struct imsm_dev *dev; | |
1213 | struct imsm_map *map; | |
1214 | struct imsm_disk *disk; | |
1215 | __u32 status; | |
1216 | ||
1217 | if (super->creating_dev == -1) { | |
1218 | fprintf(stderr, Name ": no active raid device\n"); | |
1219 | abort(); | |
1220 | } | |
1221 | ||
1222 | dev = get_imsm_dev(mpb, super->creating_dev); | |
1223 | map = &dev->vol.map[0]; | |
1224 | ||
1225 | for (dl = super->disks; dl ; dl = dl->next) | |
1226 | if (dl->major == dk->major && | |
1227 | dl->minor == dk->minor) | |
1228 | break; | |
1229 | if (!dl || ! (dk->state & (1<<MD_DISK_SYNC))) | |
1230 | return; | |
1231 | ||
1232 | map->disk_ord_tbl[dk->number] = __cpu_to_le32(dl->index); | |
1233 | ||
1234 | disk = get_imsm_disk(mpb, dl->index); | |
1235 | status = CONFIGURED_DISK | USABLE_DISK; | |
1236 | disk->status = __cpu_to_le32(status); | |
cdddbdbc DW |
1237 | } |
1238 | ||
c2c087e6 DW |
1239 | static int store_imsm_mpb(int fd, struct intel_super *super); |
1240 | ||
1241 | static int write_super_imsm(struct intel_super *super, int doclose) | |
cdddbdbc | 1242 | { |
c2c087e6 DW |
1243 | struct imsm_super *mpb = super->mpb; |
1244 | struct dl *d; | |
1245 | __u32 generation; | |
1246 | __u32 sum; | |
cdddbdbc | 1247 | |
c2c087e6 DW |
1248 | /* 'generation' is incremented everytime the metadata is written */ |
1249 | generation = __le32_to_cpu(mpb->generation_num); | |
1250 | generation++; | |
1251 | mpb->generation_num = __cpu_to_le32(generation); | |
1252 | ||
1253 | /* recalculate checksum */ | |
1254 | sum = gen_imsm_checksum(mpb); | |
1255 | mpb->check_sum = __cpu_to_le32(sum); | |
1256 | ||
1257 | for (d = super->disks; d ; d = d->next) { | |
1258 | if (store_imsm_mpb(d->fd, super)) { | |
1259 | fprintf(stderr, "%s: failed for device %d:%d %s\n", | |
1260 | __func__, d->major, d->minor, strerror(errno)); | |
1261 | return 0; | |
1262 | } | |
1263 | if (doclose) { | |
1264 | close(d->fd); | |
1265 | d->fd = -1; | |
1266 | } | |
1267 | } | |
1268 | ||
1269 | return 1; | |
1270 | } | |
1271 | ||
1272 | static int write_init_super_imsm(struct supertype *st) | |
1273 | { | |
1274 | return write_super_imsm(st->sb, 1); | |
cdddbdbc DW |
1275 | } |
1276 | ||
1277 | static int store_zero_imsm(struct supertype *st, int fd) | |
1278 | { | |
551c80c1 | 1279 | unsigned long long dsize; |
6416d527 | 1280 | void *buf; |
551c80c1 DW |
1281 | |
1282 | get_dev_size(fd, NULL, &dsize); | |
1283 | ||
1284 | /* first block is stored on second to last sector of the disk */ | |
1285 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
1286 | return 1; | |
1287 | ||
6416d527 | 1288 | posix_memalign(&buf, 512, 512); |
551c80c1 DW |
1289 | memset(buf, 0, sizeof(buf)); |
1290 | if (write(fd, buf, sizeof(buf)) != sizeof(buf)) | |
1291 | return 1; | |
cdddbdbc DW |
1292 | return 0; |
1293 | } | |
1294 | ||
cdddbdbc DW |
1295 | static int validate_geometry_imsm(struct supertype *st, int level, int layout, |
1296 | int raiddisks, int chunk, unsigned long long size, | |
2c514b71 NB |
1297 | char *dev, unsigned long long *freesize, |
1298 | int verbose) | |
cdddbdbc | 1299 | { |
c2c087e6 DW |
1300 | int fd, cfd; |
1301 | struct mdinfo *sra; | |
cdddbdbc | 1302 | |
c2c087e6 DW |
1303 | /* if given unused devices create a container |
1304 | * if given given devices in a container create a member volume | |
1305 | */ | |
1306 | if (level == LEVEL_CONTAINER) { | |
1307 | st->ss = &super_imsm_container; | |
1308 | if (dev) { | |
1309 | /* validate the container, dev == NULL */ | |
1310 | int rv = st->ss->validate_geometry(st, level, layout, | |
1311 | raiddisks, chunk, | |
1312 | size, | |
2c514b71 NB |
1313 | NULL, freesize, |
1314 | verbose); | |
c2c087e6 DW |
1315 | if (rv) |
1316 | return rv; | |
1317 | } | |
1318 | return st->ss->validate_geometry(st, level, layout, raiddisks, | |
2c514b71 NB |
1319 | chunk, size, dev, freesize, |
1320 | verbose); | |
c2c087e6 DW |
1321 | } |
1322 | ||
1323 | if (st->sb) { | |
1324 | /* creating in a given container */ | |
1325 | st->ss = &super_imsm_volume; | |
1326 | if (dev) { | |
1327 | int rv = st->ss->validate_geometry(st, level, layout, | |
1328 | raiddisks, chunk, | |
1329 | size, | |
2c514b71 NB |
1330 | NULL, freesize, |
1331 | verbose); | |
c2c087e6 DW |
1332 | if (rv) |
1333 | return rv; | |
1334 | } | |
1335 | return st->ss->validate_geometry(st, level, layout, raiddisks, | |
2c514b71 NB |
1336 | chunk, size, dev, freesize, |
1337 | verbose); | |
c2c087e6 DW |
1338 | } |
1339 | ||
1340 | /* limit creation to the following levels */ | |
1341 | if (!dev) | |
1342 | switch (level) { | |
1343 | case 0: | |
1344 | case 1: | |
1345 | case 10: | |
1346 | case 5: | |
1347 | break; | |
1348 | default: | |
1349 | return 1; | |
1350 | } | |
1351 | ||
1352 | /* This device needs to be a device in an 'imsm' container */ | |
1353 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
1354 | if (fd >= 0) { | |
2c514b71 NB |
1355 | if (verbose) |
1356 | fprintf(stderr, | |
1357 | Name ": imsm: Cannot create this array on " | |
1358 | "device %s\n", dev); | |
c2c087e6 DW |
1359 | close(fd); |
1360 | return 0; | |
1361 | } | |
1362 | if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) { | |
2c514b71 NB |
1363 | if (verbose) |
1364 | fprintf(stderr, Name ": imsm: Cannot open %s: %s\n", | |
1365 | dev, strerror(errno)); | |
c2c087e6 DW |
1366 | return 0; |
1367 | } | |
1368 | /* Well, it is in use by someone, maybe an 'imsm' container. */ | |
1369 | cfd = open_container(fd); | |
1370 | if (cfd < 0) { | |
1371 | close(fd); | |
2c514b71 NB |
1372 | if (verbose) |
1373 | fprintf(stderr, Name ": imsm: Cannot use %s: %s\n", | |
1374 | dev, strerror(EBUSY)); | |
c2c087e6 DW |
1375 | return 0; |
1376 | } | |
1377 | sra = sysfs_read(cfd, 0, GET_VERSION); | |
1378 | close(fd); | |
1379 | if (sra && sra->array.major_version == -1 && | |
1380 | strcmp(sra->text_version, "imsm") == 0) { | |
1381 | /* This is a member of a imsm container. Load the container | |
1382 | * and try to create a volume | |
1383 | */ | |
1384 | struct intel_super *super; | |
1385 | st->ss = &super_imsm_volume; | |
1386 | if (load_super_imsm_all(st, cfd, (void **) &super, NULL, 1) == 0) { | |
1387 | st->sb = super; | |
1388 | st->container_dev = fd2devnum(cfd); | |
1389 | close(cfd); | |
1390 | return st->ss->validate_geometry(st, level, layout, | |
1391 | raiddisks, chunk, size, | |
2c514b71 NB |
1392 | dev, freesize, |
1393 | verbose); | |
c2c087e6 DW |
1394 | } |
1395 | close(cfd); | |
1396 | } else /* may belong to another container */ | |
1397 | return 0; | |
1398 | ||
1399 | return 1; | |
cdddbdbc DW |
1400 | } |
1401 | ||
1402 | static int validate_geometry_imsm_container(struct supertype *st, int level, | |
1403 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 1404 | unsigned long long size, char *dev, |
2c514b71 NB |
1405 | unsigned long long *freesize, |
1406 | int verbose) | |
cdddbdbc | 1407 | { |
c2c087e6 DW |
1408 | int fd; |
1409 | unsigned long long ldsize; | |
cdddbdbc | 1410 | |
c2c087e6 DW |
1411 | if (level != LEVEL_CONTAINER) |
1412 | return 0; | |
1413 | if (!dev) | |
1414 | return 1; | |
1415 | ||
1416 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
1417 | if (fd < 0) { | |
2c514b71 NB |
1418 | if (verbose) |
1419 | fprintf(stderr, Name ": imsm: Cannot open %s: %s\n", | |
1420 | dev, strerror(errno)); | |
c2c087e6 DW |
1421 | return 0; |
1422 | } | |
1423 | if (!get_dev_size(fd, dev, &ldsize)) { | |
1424 | close(fd); | |
1425 | return 0; | |
1426 | } | |
1427 | close(fd); | |
1428 | ||
1429 | *freesize = avail_size_imsm(st, ldsize >> 9); | |
1430 | ||
1431 | return 1; | |
cdddbdbc DW |
1432 | } |
1433 | ||
c2c087e6 DW |
1434 | /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd |
1435 | * FIX ME add ahci details | |
1436 | */ | |
8b353278 DW |
1437 | static int validate_geometry_imsm_volume(struct supertype *st, int level, |
1438 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 1439 | unsigned long long size, char *dev, |
2c514b71 NB |
1440 | unsigned long long *freesize, |
1441 | int verbose) | |
cdddbdbc | 1442 | { |
c2c087e6 DW |
1443 | struct stat stb; |
1444 | struct intel_super *super = st->sb; | |
1445 | struct dl *dl; | |
1446 | unsigned long long pos = 0; | |
1447 | unsigned long long maxsize; | |
1448 | struct extent *e; | |
1449 | int i; | |
cdddbdbc | 1450 | |
c2c087e6 DW |
1451 | if (level == LEVEL_CONTAINER) |
1452 | return 0; | |
1453 | ||
1454 | if (level == 1 && raiddisks > 2) { | |
2c514b71 NB |
1455 | if (verbose) |
1456 | fprintf(stderr, Name ": imsm does not support more " | |
1457 | "than 2 in a raid1 configuration\n"); | |
c2c087e6 DW |
1458 | return 0; |
1459 | } | |
1460 | ||
1461 | /* We must have the container info already read in. */ | |
1462 | if (!super) | |
1463 | return 0; | |
1464 | ||
1465 | if (!dev) { | |
1466 | /* General test: make sure there is space for | |
1467 | * 'raiddisks' device extents of size 'size'. | |
1468 | */ | |
1469 | unsigned long long minsize = size*2 /* convert to blocks */; | |
1470 | int dcnt = 0; | |
1471 | if (minsize == 0) | |
1472 | minsize = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
1473 | for (dl = super->disks; dl ; dl = dl->next) { | |
1474 | int found = 0; | |
1475 | ||
1476 | i = 0; | |
1477 | e = get_extents(super, dl); | |
1478 | if (!e) continue; | |
1479 | do { | |
1480 | unsigned long long esize; | |
1481 | esize = e[i].start - pos; | |
1482 | if (esize >= minsize) | |
1483 | found = 1; | |
1484 | pos = e[i].start + e[i].size; | |
1485 | i++; | |
1486 | } while (e[i-1].size); | |
1487 | if (found) | |
1488 | dcnt++; | |
1489 | free(e); | |
1490 | } | |
1491 | if (dcnt < raiddisks) { | |
2c514b71 NB |
1492 | if (verbose) |
1493 | fprintf(stderr, Name ": imsm: Not enough " | |
1494 | "devices with space for this array " | |
1495 | "(%d < %d)\n", | |
1496 | dcnt, raiddisks); | |
c2c087e6 DW |
1497 | return 0; |
1498 | } | |
1499 | return 1; | |
1500 | } | |
1501 | /* This device must be a member of the set */ | |
1502 | if (stat(dev, &stb) < 0) | |
1503 | return 0; | |
1504 | if ((S_IFMT & stb.st_mode) != S_IFBLK) | |
1505 | return 0; | |
1506 | for (dl = super->disks ; dl ; dl = dl->next) { | |
1507 | if (dl->major == major(stb.st_rdev) && | |
1508 | dl->minor == minor(stb.st_rdev)) | |
1509 | break; | |
1510 | } | |
1511 | if (!dl) { | |
2c514b71 NB |
1512 | if (verbose) |
1513 | fprintf(stderr, Name ": %s is not in the " | |
1514 | "same imsm set\n", dev); | |
c2c087e6 DW |
1515 | return 0; |
1516 | } | |
1517 | e = get_extents(super, dl); | |
1518 | maxsize = 0; | |
1519 | i = 0; | |
1520 | if (e) do { | |
1521 | unsigned long long esize; | |
1522 | esize = e[i].start - pos; | |
1523 | if (esize >= maxsize) | |
1524 | maxsize = esize; | |
1525 | pos = e[i].start + e[i].size; | |
1526 | i++; | |
1527 | } while (e[i-1].size); | |
1528 | *freesize = maxsize; | |
1529 | ||
1530 | return 1; | |
cdddbdbc DW |
1531 | } |
1532 | ||
cdddbdbc DW |
1533 | static struct mdinfo *container_content_imsm(struct supertype *st) |
1534 | { | |
4f5bc454 DW |
1535 | /* Given a container loaded by load_super_imsm_all, |
1536 | * extract information about all the arrays into | |
1537 | * an mdinfo tree. | |
1538 | * | |
1539 | * For each imsm_dev create an mdinfo, fill it in, | |
1540 | * then look for matching devices in super->disks | |
1541 | * and create appropriate device mdinfo. | |
1542 | */ | |
1543 | struct intel_super *super = st->sb; | |
1544 | struct imsm_super *mpb = super->mpb; | |
1545 | struct mdinfo *rest = NULL; | |
1546 | int i; | |
cdddbdbc | 1547 | |
4f5bc454 DW |
1548 | for (i = 0; i < mpb->num_raid_devs; i++) { |
1549 | struct imsm_dev *dev = get_imsm_dev(mpb, i); | |
1550 | struct imsm_vol *vol = &dev->vol; | |
1551 | struct imsm_map *map = vol->map; | |
1552 | struct mdinfo *this; | |
1553 | __u64 sz; | |
1554 | int slot; | |
1555 | ||
1556 | this = malloc(sizeof(*this)); | |
1557 | memset(this, 0, sizeof(*this)); | |
1558 | this->next = rest; | |
1559 | rest = this; | |
1560 | ||
4f5bc454 DW |
1561 | this->array.level = get_imsm_raid_level(map); |
1562 | this->array.raid_disks = map->num_members; | |
c2c087e6 | 1563 | this->array.layout = imsm_level_to_layout(this->array.level); |
4f5bc454 DW |
1564 | this->array.md_minor = -1; |
1565 | this->array.ctime = 0; | |
1566 | this->array.utime = 0; | |
1567 | this->array.chunk_size = __le16_to_cpu(map->blocks_per_strip) << 9; | |
1568 | this->array.state = !vol->dirty; | |
1569 | this->container_member = i; | |
0fd5c350 DW |
1570 | if (map->map_state == IMSM_T_STATE_UNINITIALIZED || dev->vol.dirty) |
1571 | this->resync_start = 0; | |
1572 | else | |
1573 | this->resync_start = ~0ULL; | |
1574 | ||
4f5bc454 DW |
1575 | strncpy(this->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN); |
1576 | this->name[MAX_RAID_SERIAL_LEN] = 0; | |
1577 | ||
159c3a1a NB |
1578 | sprintf(this->text_version, "/%s/%d", |
1579 | devnum2devname(st->container_dev), | |
1580 | this->container_member); | |
1581 | ||
4f5bc454 DW |
1582 | memset(this->uuid, 0, sizeof(this->uuid)); |
1583 | ||
1584 | sz = __le32_to_cpu(dev->size_high); | |
1585 | sz <<= 32; | |
1586 | sz += __le32_to_cpu(dev->size_low); | |
1587 | this->component_size = sz; | |
1588 | this->array.size = this->component_size / 2; | |
1589 | ||
1590 | for (slot = 0 ; slot < map->num_members; slot++) { | |
1591 | struct imsm_disk *disk; | |
1592 | struct mdinfo *info_d; | |
1593 | struct dl *d; | |
1594 | int idx; | |
1595 | __u32 s; | |
1596 | ||
1597 | idx = __le32_to_cpu(map->disk_ord_tbl[slot] & ~(0xff << 24)); | |
1598 | for (d = super->disks; d ; d = d->next) | |
1599 | if (d->index == idx) | |
1600 | break; | |
1601 | ||
1602 | if (d == NULL) | |
1603 | break; /* shouldn't this be continue ?? */ | |
1604 | ||
1605 | info_d = malloc(sizeof(*info_d)); | |
1606 | if (!info_d) | |
1607 | break; /* ditto ?? */ | |
1608 | memset(info_d, 0, sizeof(*info_d)); | |
1609 | info_d->next = this->devs; | |
1610 | this->devs = info_d; | |
1611 | ||
1612 | disk = get_imsm_disk(mpb, idx); | |
1613 | s = __le32_to_cpu(disk->status); | |
1614 | ||
1615 | info_d->disk.number = d->index; | |
1616 | info_d->disk.major = d->major; | |
1617 | info_d->disk.minor = d->minor; | |
1618 | info_d->disk.raid_disk = slot; | |
1619 | info_d->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0; | |
1620 | info_d->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0; | |
1621 | info_d->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0; | |
1622 | ||
1623 | this->array.working_disks++; | |
1624 | ||
1625 | info_d->events = __le32_to_cpu(mpb->generation_num); | |
1626 | info_d->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
1627 | info_d->component_size = __le32_to_cpu(map->blocks_per_member); | |
1628 | if (d->devname) | |
1629 | strcpy(info_d->name, d->devname); | |
1630 | } | |
1631 | } | |
1632 | ||
1633 | return rest; | |
cdddbdbc DW |
1634 | } |
1635 | ||
845dea95 | 1636 | |
cba0191b NB |
1637 | static int imsm_open_new(struct supertype *c, struct active_array *a, |
1638 | char *inst) | |
845dea95 | 1639 | { |
4e6e574a | 1640 | dprintf("imsm: open_new %s\n", inst); |
cba0191b | 1641 | a->info.container_member = atoi(inst); |
845dea95 NB |
1642 | return 0; |
1643 | } | |
1644 | ||
c2a1e7da DW |
1645 | static __u8 imsm_check_degraded(struct imsm_super *mpb, int n, int failed) |
1646 | { | |
1647 | struct imsm_dev *dev = get_imsm_dev(mpb, n); | |
1648 | struct imsm_map *map = dev->vol.map; | |
1649 | ||
1650 | if (!failed) | |
1651 | return map->map_state; | |
1652 | ||
1653 | switch (get_imsm_raid_level(map)) { | |
1654 | case 0: | |
1655 | return IMSM_T_STATE_FAILED; | |
1656 | break; | |
1657 | case 1: | |
1658 | if (failed < map->num_members) | |
1659 | return IMSM_T_STATE_DEGRADED; | |
1660 | else | |
1661 | return IMSM_T_STATE_FAILED; | |
1662 | break; | |
1663 | case 10: | |
1664 | { | |
1665 | /** | |
1666 | * check to see if any mirrors have failed, | |
1667 | * otherwise we are degraded | |
1668 | */ | |
1669 | int device_per_mirror = 2; /* FIXME is this always the case? | |
1670 | * and are they always adjacent? | |
1671 | */ | |
1672 | int failed = 0; | |
1673 | int i; | |
1674 | ||
1675 | for (i = 0; i < map->num_members; i++) { | |
1676 | int idx = get_imsm_disk_idx(map, i); | |
1677 | struct imsm_disk *disk = get_imsm_disk(mpb, idx); | |
1678 | ||
1679 | if (__le32_to_cpu(disk->status) & FAILED_DISK) | |
1680 | failed++; | |
1681 | ||
1682 | if (failed >= device_per_mirror) | |
1683 | return IMSM_T_STATE_FAILED; | |
1684 | ||
1685 | /* reset 'failed' for next mirror set */ | |
1686 | if (!((i + 1) % device_per_mirror)) | |
1687 | failed = 0; | |
1688 | } | |
1689 | ||
1690 | return IMSM_T_STATE_DEGRADED; | |
1691 | } | |
1692 | case 5: | |
1693 | if (failed < 2) | |
1694 | return IMSM_T_STATE_DEGRADED; | |
1695 | else | |
1696 | return IMSM_T_STATE_FAILED; | |
1697 | break; | |
1698 | default: | |
1699 | break; | |
1700 | } | |
1701 | ||
1702 | return map->map_state; | |
1703 | } | |
1704 | ||
1705 | static int imsm_count_failed(struct imsm_super *mpb, struct imsm_map *map) | |
1706 | { | |
1707 | int i; | |
1708 | int failed = 0; | |
1709 | struct imsm_disk *disk; | |
1710 | ||
1711 | for (i = 0; i < map->num_members; i++) { | |
1712 | int idx = get_imsm_disk_idx(map, i); | |
1713 | ||
1714 | disk = get_imsm_disk(mpb, idx); | |
1715 | if (__le32_to_cpu(disk->status) & FAILED_DISK) | |
1716 | failed++; | |
1717 | } | |
1718 | ||
1719 | return failed; | |
845dea95 NB |
1720 | } |
1721 | ||
a862209d DW |
1722 | static void imsm_set_array_state(struct active_array *a, int consistent) |
1723 | { | |
1724 | int inst = a->info.container_member; | |
1725 | struct intel_super *super = a->container->sb; | |
1726 | struct imsm_dev *dev = get_imsm_dev(super->mpb, inst); | |
1727 | struct imsm_map *map = &dev->vol.map[0]; | |
1728 | int dirty = !consistent; | |
1729 | int failed; | |
1730 | __u8 map_state; | |
1731 | ||
1732 | if (a->resync_start == ~0ULL) { | |
1733 | failed = imsm_count_failed(super->mpb, map); | |
1734 | map_state = imsm_check_degraded(super->mpb, inst, failed); | |
1735 | if (!failed) | |
1736 | map_state = IMSM_T_STATE_NORMAL; | |
1737 | if (map->map_state != map_state) { | |
4e6e574a | 1738 | dprintf("imsm: map_state %d: %d\n", |
a862209d DW |
1739 | inst, map_state); |
1740 | map->map_state = map_state; | |
1741 | super->updates_pending++; | |
1742 | } | |
1743 | } | |
1744 | ||
1745 | if (dev->vol.dirty != dirty) { | |
4e6e574a | 1746 | dprintf("imsm: mark '%s' (%llu)\n", |
a862209d DW |
1747 | dirty?"dirty":"clean", a->resync_start); |
1748 | ||
1749 | dev->vol.dirty = dirty; | |
1750 | super->updates_pending++; | |
1751 | } | |
1752 | } | |
1753 | ||
8d45d196 | 1754 | static void imsm_set_disk(struct active_array *a, int n, int state) |
845dea95 | 1755 | { |
8d45d196 DW |
1756 | int inst = a->info.container_member; |
1757 | struct intel_super *super = a->container->sb; | |
1758 | struct imsm_dev *dev = get_imsm_dev(super->mpb, inst); | |
1759 | struct imsm_map *map = dev->vol.map; | |
1760 | struct imsm_disk *disk; | |
1761 | __u32 status; | |
1762 | int failed = 0; | |
1763 | int new_failure = 0; | |
1764 | ||
1765 | if (n > map->num_members) | |
1766 | fprintf(stderr, "imsm: set_disk %d out of range 0..%d\n", | |
1767 | n, map->num_members - 1); | |
1768 | ||
1769 | if (n < 0) | |
1770 | return; | |
1771 | ||
4e6e574a | 1772 | dprintf("imsm: set_disk %d:%x\n", n, state); |
8d45d196 DW |
1773 | |
1774 | disk = get_imsm_disk(super->mpb, get_imsm_disk_idx(map, n)); | |
1775 | ||
1776 | /* check if we have seen this failure before */ | |
1777 | status = __le32_to_cpu(disk->status); | |
1778 | if ((state & DS_FAULTY) && !(status & FAILED_DISK)) { | |
1779 | status |= FAILED_DISK; | |
1780 | disk->status = __cpu_to_le32(status); | |
1781 | new_failure = 1; | |
1782 | } | |
1783 | ||
1784 | /** | |
1785 | * the number of failures have changed, count up 'failed' to determine | |
1786 | * degraded / failed status | |
1787 | */ | |
1788 | if (new_failure && map->map_state != IMSM_T_STATE_FAILED) | |
1789 | failed = imsm_count_failed(super->mpb, map); | |
1790 | ||
1791 | if (failed) | |
1792 | map->map_state = imsm_check_degraded(super->mpb, inst, failed); | |
1793 | ||
1794 | if (new_failure) | |
1795 | super->updates_pending++; | |
845dea95 NB |
1796 | } |
1797 | ||
c2a1e7da DW |
1798 | static int store_imsm_mpb(int fd, struct intel_super *super) |
1799 | { | |
1800 | struct imsm_super *mpb = super->mpb; | |
1801 | __u32 mpb_size = __le32_to_cpu(mpb->mpb_size); | |
1802 | unsigned long long dsize; | |
1803 | unsigned long long sectors; | |
1804 | ||
1805 | get_dev_size(fd, NULL, &dsize); | |
1806 | ||
272f648f DW |
1807 | if (mpb_size > 512) { |
1808 | /* -1 to account for anchor */ | |
1809 | sectors = mpb_sectors(mpb) - 1; | |
c2a1e7da | 1810 | |
272f648f DW |
1811 | /* write the extended mpb to the sectors preceeding the anchor */ |
1812 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) | |
1813 | return 1; | |
c2a1e7da | 1814 | |
272f648f DW |
1815 | if (write(fd, super->buf + 512, mpb_size - 512) != mpb_size - 512) |
1816 | return 1; | |
1817 | } | |
c2a1e7da | 1818 | |
272f648f DW |
1819 | /* first block is stored on second to last sector of the disk */ |
1820 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
c2a1e7da DW |
1821 | return 1; |
1822 | ||
272f648f | 1823 | if (write(fd, super->buf, 512) != 512) |
c2a1e7da DW |
1824 | return 1; |
1825 | ||
1826 | fsync(fd); | |
1827 | ||
1828 | return 0; | |
1829 | } | |
1830 | ||
2e735d19 | 1831 | static void imsm_sync_metadata(struct supertype *container) |
845dea95 | 1832 | { |
2e735d19 | 1833 | struct intel_super *super = container->sb; |
c2a1e7da DW |
1834 | |
1835 | if (!super->updates_pending) | |
1836 | return; | |
1837 | ||
c2c087e6 | 1838 | write_super_imsm(super, 0); |
c2a1e7da DW |
1839 | |
1840 | super->updates_pending = 0; | |
845dea95 NB |
1841 | } |
1842 | ||
cdddbdbc DW |
1843 | struct superswitch super_imsm = { |
1844 | #ifndef MDASSEMBLE | |
1845 | .examine_super = examine_super_imsm, | |
1846 | .brief_examine_super = brief_examine_super_imsm, | |
1847 | .detail_super = detail_super_imsm, | |
1848 | .brief_detail_super = brief_detail_super_imsm, | |
1849 | #endif | |
1850 | .match_home = match_home_imsm, | |
1851 | .uuid_from_super= uuid_from_super_imsm, | |
1852 | .getinfo_super = getinfo_super_imsm, | |
1853 | .update_super = update_super_imsm, | |
1854 | ||
1855 | .avail_size = avail_size_imsm, | |
1856 | ||
1857 | .compare_super = compare_super_imsm, | |
1858 | ||
1859 | .load_super = load_super_imsm, | |
1860 | .init_super = init_zero_imsm, | |
1861 | .store_super = store_zero_imsm, | |
1862 | .free_super = free_super_imsm, | |
1863 | .match_metadata_desc = match_metadata_desc_imsm, | |
cdddbdbc DW |
1864 | |
1865 | .validate_geometry = validate_geometry_imsm, | |
cdddbdbc | 1866 | .external = 1, |
845dea95 NB |
1867 | |
1868 | /* for mdmon */ | |
1869 | .open_new = imsm_open_new, | |
1870 | .load_super = load_super_imsm, | |
ed9d66aa | 1871 | .set_array_state= imsm_set_array_state, |
845dea95 NB |
1872 | .set_disk = imsm_set_disk, |
1873 | .sync_metadata = imsm_sync_metadata, | |
cdddbdbc DW |
1874 | }; |
1875 | ||
1876 | /* super_imsm_container is set by validate_geometry_imsm when given a | |
1877 | * device that is not part of any array | |
1878 | */ | |
1879 | struct superswitch super_imsm_container = { | |
1880 | ||
1881 | .validate_geometry = validate_geometry_imsm_container, | |
1882 | .init_super = init_super_imsm, | |
1883 | .add_to_super = add_to_super_imsm, | |
1884 | .write_init_super = write_init_super_imsm, | |
1885 | .getinfo_super = getinfo_super_imsm, | |
cdddbdbc DW |
1886 | .load_super = load_super_imsm, |
1887 | ||
1888 | #ifndef MDASSEMBLE | |
1889 | .examine_super = examine_super_imsm, | |
1890 | .brief_examine_super = brief_examine_super_imsm, | |
1891 | .detail_super = detail_super_imsm, | |
1892 | .brief_detail_super = brief_detail_super_imsm, | |
1893 | #endif | |
1894 | ||
1895 | .free_super = free_super_imsm, | |
1896 | ||
1897 | .container_content = container_content_imsm, | |
1898 | ||
cdddbdbc | 1899 | .external = 1, |
cdddbdbc DW |
1900 | }; |
1901 | ||
0063ecba | 1902 | static struct superswitch super_imsm_volume = { |
cdddbdbc | 1903 | .update_super = update_super_imsm, |
8b353278 DW |
1904 | .init_super = init_super_imsm_volume, |
1905 | .add_to_super = add_to_super_imsm_volume, | |
1906 | .getinfo_super = getinfo_super_imsm_volume, | |
cdddbdbc DW |
1907 | .write_init_super = write_init_super_imsm, |
1908 | ||
1909 | .load_super = load_super_imsm, | |
1910 | .free_super = free_super_imsm, | |
8b353278 | 1911 | .match_metadata_desc = match_metadata_desc_imsm_volume, |
cdddbdbc DW |
1912 | |
1913 | ||
8b353278 | 1914 | .validate_geometry = validate_geometry_imsm_volume, |
cdddbdbc | 1915 | .external = 2, |
cdddbdbc | 1916 | }; |