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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 | ||
127 | /* internal representation of IMSM metadata */ | |
128 | struct intel_super { | |
129 | union { | |
130 | struct imsm_super *mpb; | |
131 | void *buf; | |
132 | }; | |
c2c087e6 DW |
133 | int updates_pending; /* count of pending updates for mdmon */ |
134 | int creating_imsm; /* flag to indicate container creation */ | |
bf5a934a | 135 | int current_vol; /* index of raid device undergoing creation */ |
cdddbdbc DW |
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 | ||
c2c087e6 DW |
146 | struct extent { |
147 | unsigned long long start, size; | |
148 | }; | |
149 | ||
cdddbdbc DW |
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)); | |
ef609477 | 160 | memset(st, 0, sizeof(*st)); |
cdddbdbc DW |
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 | ||
cdddbdbc DW |
168 | static __u8 *get_imsm_version(struct imsm_super *mpb) |
169 | { | |
170 | return &mpb->sig[MPB_SIG_LEN]; | |
171 | } | |
172 | ||
173 | static struct imsm_disk *get_imsm_disk(struct imsm_super *mpb, __u8 index) | |
174 | { | |
175 | if (index > mpb->num_disks - 1) | |
176 | return NULL; | |
177 | return &mpb->disk[index]; | |
178 | } | |
179 | ||
180 | static __u32 gen_imsm_checksum(struct imsm_super *mpb) | |
181 | { | |
182 | __u32 end = mpb->mpb_size / sizeof(end); | |
183 | __u32 *p = (__u32 *) mpb; | |
184 | __u32 sum = 0; | |
185 | ||
186 | while (end--) | |
187 | sum += __le32_to_cpu(*p++); | |
188 | ||
189 | return sum - __le32_to_cpu(mpb->check_sum); | |
190 | } | |
191 | ||
192 | static size_t sizeof_imsm_dev(struct imsm_dev *dev) | |
193 | { | |
194 | size_t size = sizeof(*dev); | |
195 | ||
196 | /* each map has disk_ord_tbl[num_members - 1] additional space */ | |
197 | size += sizeof(__u32) * (dev->vol.map[0].num_members - 1); | |
198 | ||
199 | /* migrating means an additional map */ | |
200 | if (dev->vol.migr_state) { | |
201 | size += sizeof(struct imsm_map); | |
202 | size += sizeof(__u32) * (dev->vol.map[1].num_members - 1); | |
203 | } | |
204 | ||
205 | return size; | |
206 | } | |
207 | ||
208 | static struct imsm_dev *get_imsm_dev(struct imsm_super *mpb, __u8 index) | |
209 | { | |
210 | int offset; | |
211 | int i; | |
212 | void *_mpb = mpb; | |
213 | ||
214 | if (index > mpb->num_raid_devs - 1) | |
215 | return NULL; | |
216 | ||
217 | /* devices start after all disks */ | |
218 | offset = ((void *) &mpb->disk[mpb->num_disks]) - _mpb; | |
219 | ||
220 | for (i = 0; i <= index; i++) | |
221 | if (i == index) | |
222 | return _mpb + offset; | |
223 | else | |
224 | offset += sizeof_imsm_dev(_mpb + offset); | |
225 | ||
226 | return NULL; | |
227 | } | |
228 | ||
229 | static __u32 get_imsm_disk_idx(struct imsm_map *map, int slot) | |
230 | { | |
231 | __u32 *ord_tbl = &map->disk_ord_tbl[slot]; | |
232 | ||
233 | /* top byte is 'special' */ | |
234 | return __le32_to_cpu(*ord_tbl & ~(0xff << 24)); | |
235 | } | |
236 | ||
cdddbdbc DW |
237 | static int get_imsm_raid_level(struct imsm_map *map) |
238 | { | |
239 | if (map->raid_level == 1) { | |
240 | if (map->num_members == 2) | |
241 | return 1; | |
242 | else | |
243 | return 10; | |
244 | } | |
245 | ||
246 | return map->raid_level; | |
247 | } | |
248 | ||
c2c087e6 DW |
249 | static int cmp_extent(const void *av, const void *bv) |
250 | { | |
251 | const struct extent *a = av; | |
252 | const struct extent *b = bv; | |
253 | if (a->start < b->start) | |
254 | return -1; | |
255 | if (a->start > b->start) | |
256 | return 1; | |
257 | return 0; | |
258 | } | |
259 | ||
260 | static struct extent *get_extents(struct intel_super *super, struct dl *dl) | |
261 | { | |
262 | /* find a list of used extents on the given physical device */ | |
263 | struct imsm_super *mpb = super->mpb; | |
264 | struct imsm_disk *disk; | |
265 | struct extent *rv, *e; | |
266 | int i, j; | |
267 | int memberships = 0; | |
268 | ||
269 | disk = get_imsm_disk(mpb, dl->index); | |
270 | if (!disk) | |
271 | return NULL; | |
272 | ||
273 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
274 | struct imsm_dev *dev = get_imsm_dev(mpb, i); | |
275 | struct imsm_map *map = dev->vol.map; | |
276 | ||
277 | for (j = 0; j < map->num_members; j++) { | |
278 | __u32 index = get_imsm_disk_idx(map, j); | |
279 | ||
280 | if (index == dl->index) | |
281 | memberships++; | |
282 | } | |
283 | } | |
284 | rv = malloc(sizeof(struct extent) * (memberships + 1)); | |
285 | if (!rv) | |
286 | return NULL; | |
287 | e = rv; | |
288 | ||
289 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
290 | struct imsm_dev *dev = get_imsm_dev(mpb, i); | |
291 | struct imsm_map *map = dev->vol.map; | |
292 | ||
293 | for (j = 0; j < map->num_members; j++) { | |
294 | __u32 index = get_imsm_disk_idx(map, j); | |
295 | ||
296 | if (index == dl->index) { | |
297 | e->start = __le32_to_cpu(map->pba_of_lba0); | |
298 | e->size = __le32_to_cpu(map->blocks_per_member); | |
299 | e++; | |
300 | } | |
301 | } | |
302 | } | |
303 | qsort(rv, memberships, sizeof(*rv), cmp_extent); | |
304 | ||
305 | e->start = __le32_to_cpu(disk->total_blocks) - | |
306 | (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
307 | e->size = 0; | |
308 | return rv; | |
309 | } | |
310 | ||
4f5bc454 | 311 | #ifndef MDASSEMBLE |
cdddbdbc DW |
312 | static void print_imsm_dev(struct imsm_dev *dev, int index) |
313 | { | |
314 | __u64 sz; | |
315 | int slot; | |
316 | struct imsm_map *map = dev->vol.map; | |
317 | ||
318 | printf("\n"); | |
319 | printf("[%s]:\n", dev->volume); | |
320 | printf(" RAID Level : %d\n", get_imsm_raid_level(map)); | |
321 | printf(" Members : %d\n", map->num_members); | |
322 | for (slot = 0; slot < map->num_members; slot++) | |
323 | if (index == get_imsm_disk_idx(map, slot)) | |
324 | break; | |
325 | if (slot < map->num_members) | |
326 | printf(" This Slot : %d\n", slot); | |
327 | else | |
328 | printf(" This Slot : ?\n"); | |
329 | sz = __le32_to_cpu(dev->size_high); | |
330 | sz <<= 32; | |
331 | sz += __le32_to_cpu(dev->size_low); | |
332 | printf(" Array Size : %llu%s\n", (unsigned long long)sz, | |
333 | human_size(sz * 512)); | |
334 | sz = __le32_to_cpu(map->blocks_per_member); | |
335 | printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz, | |
336 | human_size(sz * 512)); | |
337 | printf(" Sector Offset : %u\n", | |
338 | __le32_to_cpu(map->pba_of_lba0)); | |
339 | printf(" Num Stripes : %u\n", | |
340 | __le32_to_cpu(map->num_data_stripes)); | |
341 | printf(" Chunk Size : %u KiB\n", | |
342 | __le16_to_cpu(map->blocks_per_strip) / 2); | |
343 | printf(" Reserved : %d\n", __le32_to_cpu(dev->reserved_blocks)); | |
344 | printf(" Migrate State : %s\n", dev->vol.migr_state ? "migrating" : "idle"); | |
345 | printf(" Dirty State : %s\n", dev->vol.dirty ? "dirty" : "clean"); | |
346 | printf(" Map State : %s\n", map_state_str[map->map_state]); | |
347 | } | |
348 | ||
349 | static void print_imsm_disk(struct imsm_super *mpb, int index) | |
350 | { | |
351 | struct imsm_disk *disk = get_imsm_disk(mpb, index); | |
352 | char str[MAX_RAID_SERIAL_LEN]; | |
353 | __u32 s; | |
354 | __u64 sz; | |
355 | ||
356 | printf("\n"); | |
357 | snprintf(str, MAX_RAID_SERIAL_LEN, "%s", disk->serial); | |
358 | printf(" Disk%02d Serial : %s\n", index, str); | |
359 | s = __le32_to_cpu(disk->status); | |
360 | printf(" State :%s%s%s%s\n", s&SPARE_DISK ? " spare" : "", | |
361 | s&CONFIGURED_DISK ? " active" : "", | |
362 | s&FAILED_DISK ? " failed" : "", | |
363 | s&USABLE_DISK ? " usable" : ""); | |
364 | printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id)); | |
c2c087e6 DW |
365 | sz = __le32_to_cpu(disk->total_blocks) - |
366 | (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS * mpb->num_raid_devs); | |
cdddbdbc DW |
367 | printf(" Usable Size : %llu%s\n", (unsigned long long)sz, |
368 | human_size(sz * 512)); | |
369 | } | |
370 | ||
371 | static void examine_super_imsm(struct supertype *st, char *homehost) | |
372 | { | |
373 | struct intel_super *super = st->sb; | |
374 | struct imsm_super *mpb = super->mpb; | |
375 | char str[MAX_SIGNATURE_LENGTH]; | |
376 | int i; | |
377 | __u32 sum; | |
378 | ||
379 | snprintf(str, MPB_SIG_LEN, "%s", mpb->sig); | |
380 | printf(" Magic : %s\n", str); | |
381 | snprintf(str, strlen(MPB_VERSION_RAID0), "%s", get_imsm_version(mpb)); | |
382 | printf(" Version : %s\n", get_imsm_version(mpb)); | |
383 | printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num)); | |
384 | printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num)); | |
385 | sum = __le32_to_cpu(mpb->check_sum); | |
386 | printf(" Checksum : %08x %s\n", sum, | |
387 | gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect"); | |
87eb16df | 388 | printf(" MPB Sectors : %d\n", mpb_sectors(mpb)); |
cdddbdbc DW |
389 | printf(" Disks : %d\n", mpb->num_disks); |
390 | printf(" RAID Devices : %d\n", mpb->num_raid_devs); | |
391 | print_imsm_disk(mpb, super->disks->index); | |
392 | for (i = 0; i < mpb->num_raid_devs; i++) | |
393 | print_imsm_dev(get_imsm_dev(mpb, i), super->disks->index); | |
394 | for (i = 0; i < mpb->num_disks; i++) { | |
395 | if (i == super->disks->index) | |
396 | continue; | |
397 | print_imsm_disk(mpb, i); | |
398 | } | |
399 | } | |
400 | ||
401 | static void brief_examine_super_imsm(struct supertype *st) | |
402 | { | |
403 | struct intel_super *super = st->sb; | |
404 | struct imsm_super *mpb = super->mpb; | |
405 | ||
406 | printf("ARRAY /dev/imsm family=%08x metadata=external:imsm\n", | |
407 | __le32_to_cpu(mpb->family_num)); | |
408 | } | |
409 | ||
410 | static void detail_super_imsm(struct supertype *st, char *homehost) | |
411 | { | |
412 | printf("%s\n", __FUNCTION__); | |
413 | } | |
414 | ||
415 | static void brief_detail_super_imsm(struct supertype *st) | |
416 | { | |
417 | printf("%s\n", __FUNCTION__); | |
418 | } | |
419 | #endif | |
420 | ||
421 | static int match_home_imsm(struct supertype *st, char *homehost) | |
422 | { | |
423 | printf("%s\n", __FUNCTION__); | |
424 | ||
425 | return 0; | |
426 | } | |
427 | ||
428 | static void uuid_from_super_imsm(struct supertype *st, int uuid[4]) | |
429 | { | |
430 | printf("%s\n", __FUNCTION__); | |
431 | } | |
432 | ||
0d481d37 | 433 | #if 0 |
4f5bc454 DW |
434 | static void |
435 | get_imsm_numerical_version(struct imsm_super *mpb, int *m, int *p) | |
cdddbdbc | 436 | { |
cdddbdbc DW |
437 | __u8 *v = get_imsm_version(mpb); |
438 | __u8 *end = mpb->sig + MAX_SIGNATURE_LENGTH; | |
439 | char major[] = { 0, 0, 0 }; | |
440 | char minor[] = { 0 ,0, 0 }; | |
441 | char patch[] = { 0, 0, 0 }; | |
442 | char *ver_parse[] = { major, minor, patch }; | |
443 | int i, j; | |
444 | ||
445 | i = j = 0; | |
446 | while (*v != '\0' && v < end) { | |
447 | if (*v != '.' && j < 2) | |
448 | ver_parse[i][j++] = *v; | |
449 | else { | |
450 | i++; | |
451 | j = 0; | |
452 | } | |
453 | v++; | |
454 | } | |
455 | ||
4f5bc454 DW |
456 | *m = strtol(minor, NULL, 0); |
457 | *p = strtol(patch, NULL, 0); | |
458 | } | |
0d481d37 | 459 | #endif |
4f5bc454 | 460 | |
c2c087e6 DW |
461 | static int imsm_level_to_layout(int level) |
462 | { | |
463 | switch (level) { | |
464 | case 0: | |
465 | case 1: | |
466 | return 0; | |
467 | case 5: | |
468 | case 6: | |
469 | return ALGORITHM_LEFT_SYMMETRIC; | |
470 | case 10: | |
471 | return 0x102; //FIXME is this correct? | |
472 | } | |
473 | return -1; | |
474 | } | |
475 | ||
bf5a934a DW |
476 | static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info) |
477 | { | |
478 | struct intel_super *super = st->sb; | |
479 | struct imsm_super *mpb = super->mpb; | |
480 | struct imsm_dev *dev = get_imsm_dev(mpb, super->current_vol); | |
481 | struct imsm_map *map = &dev->vol.map[0]; | |
482 | ||
483 | info->container_member = super->current_vol; | |
484 | info->array.raid_disks = map->num_members; | |
485 | info->array.level = get_imsm_raid_level(map); | |
486 | info->array.layout = imsm_level_to_layout(info->array.level); | |
487 | info->array.md_minor = -1; | |
488 | info->array.ctime = 0; | |
489 | info->array.utime = 0; | |
490 | info->array.chunk_size = __le16_to_cpu(map->blocks_per_strip * 512); | |
491 | ||
492 | info->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
493 | info->component_size = __le32_to_cpu(map->blocks_per_member); | |
494 | ||
495 | info->disk.major = 0; | |
496 | info->disk.minor = 0; | |
497 | ||
498 | sprintf(info->text_version, "/%s/%d", | |
499 | devnum2devname(st->container_dev), | |
500 | info->container_member); | |
501 | } | |
502 | ||
503 | ||
4f5bc454 DW |
504 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info) |
505 | { | |
506 | struct intel_super *super = st->sb; | |
507 | struct imsm_super *mpb = super->mpb; | |
508 | struct imsm_disk *disk; | |
509 | __u32 s; | |
4f5bc454 | 510 | |
bf5a934a DW |
511 | if (super->current_vol >= 0) { |
512 | getinfo_super_imsm_volume(st, info); | |
513 | return; | |
514 | } | |
cdddbdbc DW |
515 | info->array.raid_disks = mpb->num_disks; |
516 | info->array.level = LEVEL_CONTAINER; | |
517 | info->array.layout = 0; | |
518 | info->array.md_minor = -1; | |
c2c087e6 | 519 | info->array.ctime = 0; /* N/A for imsm */ |
cdddbdbc DW |
520 | info->array.utime = 0; |
521 | info->array.chunk_size = 0; | |
522 | ||
523 | info->disk.major = 0; | |
524 | info->disk.minor = 0; | |
cdddbdbc | 525 | info->disk.raid_disk = -1; |
c2c087e6 DW |
526 | info->reshape_active = 0; |
527 | strcpy(info->text_version, "imsm"); | |
528 | info->disk.number = -1; | |
529 | info->disk.state = 0; | |
530 | ||
4a04ec6c | 531 | if (super->disks) { |
bf5a934a | 532 | disk = get_imsm_disk(mpb, super->disks->index); |
4a04ec6c DW |
533 | info->disk.number = super->disks->index; |
534 | info->disk.raid_disk = super->disks->index; | |
bf5a934a DW |
535 | info->data_offset = __le32_to_cpu(disk->total_blocks) - |
536 | (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
537 | info->component_size = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
4a04ec6c DW |
538 | s = __le32_to_cpu(disk->status); |
539 | info->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0; | |
540 | info->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0; | |
541 | info->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0; | |
cdddbdbc | 542 | } |
cdddbdbc DW |
543 | } |
544 | ||
cdddbdbc DW |
545 | static int update_super_imsm(struct supertype *st, struct mdinfo *info, |
546 | char *update, char *devname, int verbose, | |
547 | int uuid_set, char *homehost) | |
548 | { | |
f352c545 DW |
549 | /* FIXME */ |
550 | ||
551 | /* For 'assemble' and 'force' we need to return non-zero if any | |
552 | * change was made. For others, the return value is ignored. | |
553 | * Update options are: | |
554 | * force-one : This device looks a bit old but needs to be included, | |
555 | * update age info appropriately. | |
556 | * assemble: clear any 'faulty' flag to allow this device to | |
557 | * be assembled. | |
558 | * force-array: Array is degraded but being forced, mark it clean | |
559 | * if that will be needed to assemble it. | |
560 | * | |
561 | * newdev: not used ???? | |
562 | * grow: Array has gained a new device - this is currently for | |
563 | * linear only | |
564 | * resync: mark as dirty so a resync will happen. | |
565 | * name: update the name - preserving the homehost | |
566 | * | |
567 | * Following are not relevant for this imsm: | |
568 | * sparc2.2 : update from old dodgey metadata | |
569 | * super-minor: change the preferred_minor number | |
570 | * summaries: update redundant counters. | |
571 | * uuid: Change the uuid of the array to match watch is given | |
572 | * homehost: update the recorded homehost | |
573 | * _reshape_progress: record new reshape_progress position. | |
574 | */ | |
575 | int rv = 0; | |
576 | //struct intel_super *super = st->sb; | |
577 | //struct imsm_super *mpb = super->mpb; | |
578 | ||
579 | if (strcmp(update, "grow") == 0) { | |
580 | } | |
581 | if (strcmp(update, "resync") == 0) { | |
582 | /* dev->vol.dirty = 1; */ | |
583 | } | |
584 | ||
585 | /* IMSM has no concept of UUID or homehost */ | |
586 | ||
587 | return rv; | |
cdddbdbc DW |
588 | } |
589 | ||
c2c087e6 | 590 | static size_t disks_to_mpb_size(int disks) |
cdddbdbc | 591 | { |
c2c087e6 | 592 | size_t size; |
cdddbdbc | 593 | |
c2c087e6 DW |
594 | size = sizeof(struct imsm_super); |
595 | size += (disks - 1) * sizeof(struct imsm_disk); | |
596 | size += 2 * sizeof(struct imsm_dev); | |
597 | /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */ | |
598 | size += (4 - 2) * sizeof(struct imsm_map); | |
599 | /* 4 possible disk_ord_tbl's */ | |
600 | size += 4 * (disks - 1) * sizeof(__u32); | |
601 | ||
602 | return size; | |
603 | } | |
604 | ||
605 | static __u64 avail_size_imsm(struct supertype *st, __u64 devsize) | |
606 | { | |
607 | if (devsize < (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS)) | |
608 | return 0; | |
609 | ||
610 | return devsize - (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
cdddbdbc DW |
611 | } |
612 | ||
613 | static int compare_super_imsm(struct supertype *st, struct supertype *tst) | |
614 | { | |
615 | /* | |
616 | * return: | |
617 | * 0 same, or first was empty, and second was copied | |
618 | * 1 second had wrong number | |
619 | * 2 wrong uuid | |
620 | * 3 wrong other info | |
621 | */ | |
622 | struct intel_super *first = st->sb; | |
623 | struct intel_super *sec = tst->sb; | |
624 | ||
625 | if (!first) { | |
626 | st->sb = tst->sb; | |
627 | tst->sb = NULL; | |
628 | return 0; | |
629 | } | |
630 | ||
631 | if (memcmp(first->mpb->sig, sec->mpb->sig, MAX_SIGNATURE_LENGTH) != 0) | |
632 | return 3; | |
633 | if (first->mpb->family_num != sec->mpb->family_num) | |
634 | return 3; | |
635 | if (first->mpb->mpb_size != sec->mpb->mpb_size) | |
636 | return 3; | |
637 | if (first->mpb->check_sum != sec->mpb->check_sum) | |
638 | return 3; | |
639 | ||
640 | return 0; | |
641 | } | |
642 | ||
643 | extern int scsi_get_serial(int fd, void *buf, size_t buf_len); | |
644 | ||
645 | static int imsm_read_serial(int fd, char *devname, | |
646 | __u8 serial[MAX_RAID_SERIAL_LEN]) | |
647 | { | |
648 | unsigned char scsi_serial[255]; | |
cdddbdbc | 649 | int sg_fd; |
cdddbdbc DW |
650 | int rv; |
651 | int rsp_len; | |
652 | int i, cnt; | |
653 | ||
654 | memset(scsi_serial, 0, sizeof(scsi_serial)); | |
cdddbdbc | 655 | |
90c8b707 | 656 | sg_fd = sysfs_disk_to_sg(fd); |
cdddbdbc DW |
657 | if (sg_fd < 0) { |
658 | if (devname) | |
659 | fprintf(stderr, | |
90c8b707 DW |
660 | Name ": Failed to open sg interface for %s: %s\n", |
661 | devname, strerror(errno)); | |
cdddbdbc DW |
662 | return 1; |
663 | } | |
664 | ||
665 | rv = scsi_get_serial(sg_fd, scsi_serial, sizeof(scsi_serial)); | |
666 | close(sg_fd); | |
667 | ||
668 | if (rv != 0) { | |
669 | if (devname) | |
670 | fprintf(stderr, | |
671 | Name ": Failed to retrieve serial for %s\n", | |
672 | devname); | |
673 | return rv; | |
674 | } | |
675 | ||
676 | rsp_len = scsi_serial[3]; | |
677 | for (i = 0, cnt = 0; i < rsp_len; i++) { | |
678 | if (!isspace(scsi_serial[4 + i])) | |
679 | serial[cnt++] = scsi_serial[4 + i]; | |
680 | if (cnt == MAX_RAID_SERIAL_LEN) | |
681 | break; | |
682 | } | |
683 | ||
684 | serial[MAX_RAID_SERIAL_LEN - 1] = '\0'; | |
685 | ||
686 | return 0; | |
687 | } | |
688 | ||
689 | static int | |
690 | load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd) | |
691 | { | |
692 | struct imsm_super *mpb = super->mpb; | |
693 | struct dl *dl; | |
694 | struct stat stb; | |
695 | struct imsm_disk *disk; | |
696 | int rv; | |
697 | int i; | |
698 | ||
699 | dl = malloc(sizeof(*dl)); | |
700 | if (!dl) { | |
701 | if (devname) | |
702 | fprintf(stderr, | |
703 | Name ": failed to allocate disk buffer for %s\n", | |
704 | devname); | |
705 | return 2; | |
706 | } | |
707 | memset(dl, 0, sizeof(*dl)); | |
708 | ||
709 | fstat(fd, &stb); | |
710 | dl->major = major(stb.st_rdev); | |
711 | dl->minor = minor(stb.st_rdev); | |
712 | dl->next = super->disks; | |
713 | dl->fd = keep_fd ? fd : -1; | |
714 | dl->devname = devname ? strdup(devname) : NULL; | |
715 | dl->index = -1; | |
716 | super->disks = dl; | |
717 | rv = imsm_read_serial(fd, devname, dl->serial); | |
718 | ||
719 | if (rv != 0) | |
720 | return 2; | |
721 | ||
722 | /* look up this disk's index */ | |
723 | for (i = 0; i < mpb->num_disks; i++) { | |
724 | disk = get_imsm_disk(mpb, i); | |
725 | ||
726 | if (memcmp(disk->serial, dl->serial, MAX_RAID_SERIAL_LEN) == 0) | |
727 | break; | |
728 | } | |
729 | ||
730 | if (i > mpb->num_disks) | |
731 | return 2; | |
732 | ||
733 | dl->index = i; | |
734 | ||
735 | return 0; | |
736 | } | |
737 | ||
738 | /* load_imsm_mpb - read matrix metadata | |
739 | * allocates super->mpb to be freed by free_super | |
740 | */ | |
741 | static int load_imsm_mpb(int fd, struct intel_super *super, char *devname) | |
742 | { | |
743 | unsigned long long dsize; | |
744 | size_t len, mpb_size; | |
745 | unsigned long long sectors; | |
746 | struct stat; | |
6416d527 | 747 | struct imsm_super *anchor; |
cdddbdbc DW |
748 | __u32 check_sum; |
749 | ||
cdddbdbc DW |
750 | get_dev_size(fd, NULL, &dsize); |
751 | ||
752 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) { | |
753 | if (devname) | |
754 | fprintf(stderr, | |
755 | Name ": Cannot seek to anchor block on %s: %s\n", | |
756 | devname, strerror(errno)); | |
757 | return 1; | |
758 | } | |
759 | ||
6416d527 | 760 | len = 512; |
ad97895e DW |
761 | if (posix_memalign((void**)&anchor, 512, len) != 0) { |
762 | if (devname) | |
763 | fprintf(stderr, | |
764 | Name ": Failed to allocate imsm anchor buffer" | |
765 | " on %s\n", devname); | |
766 | return 1; | |
767 | } | |
6416d527 | 768 | if (read(fd, anchor, len) != len) { |
cdddbdbc DW |
769 | if (devname) |
770 | fprintf(stderr, | |
771 | Name ": Cannot read anchor block on %s: %s\n", | |
772 | devname, strerror(errno)); | |
6416d527 | 773 | free(anchor); |
cdddbdbc DW |
774 | return 1; |
775 | } | |
776 | ||
6416d527 | 777 | if (strncmp((char *) anchor->sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) { |
cdddbdbc DW |
778 | if (devname) |
779 | fprintf(stderr, | |
780 | Name ": no IMSM anchor on %s\n", devname); | |
6416d527 | 781 | free(anchor); |
cdddbdbc DW |
782 | return 2; |
783 | } | |
784 | ||
6416d527 NB |
785 | mpb_size = __le32_to_cpu(anchor->mpb_size); |
786 | mpb_size = ROUND_UP(mpb_size, 512); | |
ad97895e | 787 | if (posix_memalign((void**)&super->mpb, 512, mpb_size) != 0) { |
cdddbdbc DW |
788 | if (devname) |
789 | fprintf(stderr, | |
790 | Name ": unable to allocate %zu byte mpb buffer\n", | |
791 | mpb_size); | |
6416d527 | 792 | free(anchor); |
cdddbdbc DW |
793 | return 2; |
794 | } | |
6416d527 | 795 | memcpy(super->buf, anchor, len); |
cdddbdbc | 796 | |
6416d527 NB |
797 | sectors = mpb_sectors(anchor) - 1; |
798 | free(anchor); | |
cdddbdbc DW |
799 | if (!sectors) |
800 | return load_imsm_disk(fd, super, devname, 0); | |
801 | ||
802 | /* read the extended mpb */ | |
803 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) { | |
804 | if (devname) | |
805 | fprintf(stderr, | |
806 | Name ": Cannot seek to extended mpb on %s: %s\n", | |
807 | devname, strerror(errno)); | |
808 | return 1; | |
809 | } | |
810 | ||
811 | len = mpb_size - 512; | |
812 | if (read(fd, super->buf + 512, len) != len) { | |
813 | if (devname) | |
814 | fprintf(stderr, | |
815 | Name ": Cannot read extended mpb on %s: %s\n", | |
816 | devname, strerror(errno)); | |
817 | return 2; | |
818 | } | |
819 | ||
820 | check_sum = gen_imsm_checksum(super->mpb); | |
821 | if (check_sum != __le32_to_cpu(super->mpb->check_sum)) { | |
822 | if (devname) | |
823 | fprintf(stderr, | |
824 | Name ": IMSM checksum %x != %x on %s\n", | |
825 | check_sum, __le32_to_cpu(super->mpb->check_sum), | |
826 | devname); | |
827 | return 2; | |
828 | } | |
829 | ||
830 | return load_imsm_disk(fd, super, devname, 0); | |
831 | } | |
832 | ||
cdddbdbc DW |
833 | static void free_imsm_disks(struct intel_super *super) |
834 | { | |
835 | while (super->disks) { | |
836 | struct dl *d = super->disks; | |
837 | ||
838 | super->disks = d->next; | |
839 | if (d->fd >= 0) | |
840 | close(d->fd); | |
841 | if (d->devname) | |
842 | free(d->devname); | |
843 | free(d); | |
844 | } | |
845 | } | |
846 | ||
847 | static void free_imsm(struct intel_super *super) | |
848 | { | |
849 | if (super->mpb) | |
850 | free(super->mpb); | |
851 | free_imsm_disks(super); | |
852 | free(super); | |
853 | } | |
854 | ||
855 | ||
856 | static void free_super_imsm(struct supertype *st) | |
857 | { | |
858 | struct intel_super *super = st->sb; | |
859 | ||
860 | if (!super) | |
861 | return; | |
862 | ||
863 | free_imsm(super); | |
864 | st->sb = NULL; | |
865 | } | |
866 | ||
c2c087e6 DW |
867 | static struct intel_super *alloc_super(int creating_imsm) |
868 | { | |
869 | struct intel_super *super = malloc(sizeof(*super)); | |
870 | ||
871 | if (super) { | |
872 | memset(super, 0, sizeof(*super)); | |
873 | super->creating_imsm = creating_imsm; | |
bf5a934a | 874 | super->current_vol = -1; |
c2c087e6 DW |
875 | } |
876 | ||
877 | return super; | |
878 | } | |
879 | ||
cdddbdbc DW |
880 | #ifndef MDASSEMBLE |
881 | static int load_super_imsm_all(struct supertype *st, int fd, void **sbp, | |
882 | char *devname, int keep_fd) | |
883 | { | |
884 | struct mdinfo *sra; | |
885 | struct intel_super *super; | |
886 | struct mdinfo *sd, *best = NULL; | |
887 | __u32 bestgen = 0; | |
888 | __u32 gen; | |
889 | char nm[20]; | |
890 | int dfd; | |
891 | int rv; | |
892 | ||
893 | /* check if this disk is a member of an active array */ | |
894 | sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE); | |
895 | if (!sra) | |
896 | return 1; | |
897 | ||
898 | if (sra->array.major_version != -1 || | |
899 | sra->array.minor_version != -2 || | |
900 | strcmp(sra->text_version, "imsm") != 0) | |
901 | return 1; | |
902 | ||
c2c087e6 | 903 | super = alloc_super(0); |
cdddbdbc DW |
904 | if (!super) |
905 | return 1; | |
906 | ||
907 | /* find the most up to date disk in this array */ | |
908 | for (sd = sra->devs; sd; sd = sd->next) { | |
909 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
910 | dfd = dev_open(nm, keep_fd ? O_RDWR : O_RDONLY); | |
911 | if (!dfd) { | |
912 | free_imsm(super); | |
913 | return 2; | |
914 | } | |
915 | rv = load_imsm_mpb(dfd, super, NULL); | |
916 | if (!keep_fd) | |
917 | close(dfd); | |
918 | if (rv == 0) { | |
919 | gen = __le32_to_cpu(super->mpb->generation_num); | |
920 | if (!best || gen > bestgen) { | |
921 | bestgen = gen; | |
922 | best = sd; | |
923 | } | |
924 | } else { | |
925 | free_imsm(super); | |
926 | return 2; | |
927 | } | |
928 | } | |
929 | ||
930 | if (!best) { | |
931 | free_imsm(super); | |
932 | return 1; | |
933 | } | |
934 | ||
935 | /* load the most up to date anchor */ | |
936 | sprintf(nm, "%d:%d", best->disk.major, best->disk.minor); | |
937 | dfd = dev_open(nm, O_RDONLY); | |
938 | if (!dfd) { | |
939 | free_imsm(super); | |
940 | return 1; | |
941 | } | |
942 | rv = load_imsm_mpb(dfd, super, NULL); | |
943 | close(dfd); | |
944 | if (rv != 0) { | |
945 | free_imsm(super); | |
946 | return 2; | |
947 | } | |
948 | ||
949 | /* reset the disk list */ | |
950 | free_imsm_disks(super); | |
951 | ||
952 | /* populate disk list */ | |
953 | for (sd = sra->devs ; sd ; sd = sd->next) { | |
954 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
955 | dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY); | |
956 | if (!dfd) { | |
957 | free_imsm(super); | |
958 | return 2; | |
959 | } | |
960 | load_imsm_disk(dfd, super, NULL, keep_fd); | |
961 | if (!keep_fd) | |
962 | close(dfd); | |
963 | } | |
964 | ||
f7e7067b | 965 | if (st->subarray[0]) { |
bf5a934a DW |
966 | if (atoi(st->subarray) <= super->mpb->num_raid_devs) |
967 | super->current_vol = atoi(st->subarray); | |
968 | else | |
969 | return 1; | |
f7e7067b NB |
970 | } |
971 | ||
cdddbdbc DW |
972 | *sbp = super; |
973 | if (st->ss == NULL) { | |
bf5a934a | 974 | st->ss = &super_imsm; |
cdddbdbc DW |
975 | st->minor_version = 0; |
976 | st->max_devs = IMSM_MAX_DEVICES; | |
f4d11639 | 977 | st->container_dev = fd2devnum(fd); |
cdddbdbc DW |
978 | } |
979 | ||
980 | return 0; | |
981 | } | |
982 | #endif | |
983 | ||
984 | static int load_super_imsm(struct supertype *st, int fd, char *devname) | |
985 | { | |
986 | struct intel_super *super; | |
987 | int rv; | |
988 | ||
989 | #ifndef MDASSEMBLE | |
3dbccbcf | 990 | if (load_super_imsm_all(st, fd, &st->sb, devname, 1) == 0) |
cdddbdbc DW |
991 | return 0; |
992 | #endif | |
f7e7067b NB |
993 | if (st->subarray[0]) |
994 | return 1; /* FIXME */ | |
cdddbdbc | 995 | |
c2c087e6 | 996 | super = alloc_super(0); |
cdddbdbc DW |
997 | if (!super) { |
998 | fprintf(stderr, | |
999 | Name ": malloc of %zu failed.\n", | |
1000 | sizeof(*super)); | |
1001 | return 1; | |
1002 | } | |
1003 | ||
1004 | rv = load_imsm_mpb(fd, super, devname); | |
1005 | ||
1006 | if (rv) { | |
1007 | if (devname) | |
1008 | fprintf(stderr, | |
1009 | Name ": Failed to load all information " | |
1010 | "sections on %s\n", devname); | |
1011 | free_imsm(super); | |
1012 | return rv; | |
1013 | } | |
1014 | ||
1015 | st->sb = super; | |
1016 | if (st->ss == NULL) { | |
1017 | st->ss = &super_imsm; | |
1018 | st->minor_version = 0; | |
1019 | st->max_devs = IMSM_MAX_DEVICES; | |
1020 | } | |
1021 | ||
1022 | return 0; | |
1023 | } | |
1024 | ||
8b353278 DW |
1025 | static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info, |
1026 | unsigned long long size, char *name, | |
1027 | char *homehost, int *uuid) | |
cdddbdbc | 1028 | { |
c2c087e6 DW |
1029 | /* We are creating a volume inside a pre-existing container. |
1030 | * so st->sb is already set. | |
1031 | */ | |
1032 | struct intel_super *super = st->sb; | |
1033 | struct imsm_super *mpb = super->mpb; | |
1034 | struct imsm_dev *dev; | |
1035 | struct imsm_vol *vol; | |
1036 | struct imsm_map *map; | |
1037 | int idx = mpb->num_raid_devs; | |
1038 | int i; | |
1039 | unsigned long long array_blocks; | |
1040 | unsigned long long sz; | |
1041 | __u32 offset = 0; | |
cdddbdbc | 1042 | |
c2c087e6 DW |
1043 | if (mpb->num_raid_devs >= 2) { |
1044 | fprintf(stderr, Name": This imsm-container already has the " | |
1045 | "maximum of 2 volumes\n"); | |
1046 | return 0; | |
1047 | } | |
1048 | ||
bf5a934a DW |
1049 | super->current_vol = idx; |
1050 | sprintf(st->subarray, "%d", idx); | |
c2c087e6 DW |
1051 | mpb->num_raid_devs++; |
1052 | dev = get_imsm_dev(mpb, idx); | |
1053 | strncpy((char *) dev->volume, name, MAX_RAID_SERIAL_LEN); | |
1054 | array_blocks = calc_array_size(info->level, info->raid_disks, | |
1055 | info->layout, info->chunk_size, | |
1056 | info->size*2); | |
1057 | dev->size_low = __cpu_to_le32((__u32) array_blocks); | |
1058 | dev->size_high = __cpu_to_le32((__u32) (array_blocks >> 32)); | |
1059 | dev->status = __cpu_to_le32(0); | |
1060 | dev->reserved_blocks = __cpu_to_le32(0); | |
1061 | vol = &dev->vol; | |
1062 | vol->migr_state = 0; | |
1063 | vol->migr_type = 0; | |
1064 | vol->dirty = 0; | |
1065 | for (i = 0; i < idx; i++) { | |
1066 | struct imsm_dev *prev = get_imsm_dev(mpb, i); | |
1067 | struct imsm_map *pmap = &prev->vol.map[0]; | |
1068 | ||
1069 | offset += __le32_to_cpu(pmap->blocks_per_member); | |
1070 | offset += IMSM_RESERVED_SECTORS; | |
1071 | } | |
1072 | map = &vol->map[0]; | |
1073 | map->pba_of_lba0 = __cpu_to_le32(offset); | |
1074 | sz = info->size * 2; | |
1075 | map->blocks_per_member = __cpu_to_le32(sz); | |
1076 | map->blocks_per_strip = __cpu_to_le16(info->chunk_size >> 9); | |
1077 | map->num_data_stripes = __cpu_to_le32(sz / (info->chunk_size >> 9)); | |
1078 | map->map_state = info->level ? IMSM_T_STATE_UNINITIALIZED : | |
1079 | IMSM_T_STATE_NORMAL; | |
1080 | if (info->level == 10) | |
1081 | map->raid_level = 1; | |
1082 | else | |
1083 | map->raid_level = info->level; | |
1084 | map->num_members = info->raid_disks; | |
1085 | for (i = 0; i < map->num_members; i++) { | |
1086 | /* initialized in add_to_super */ | |
1087 | map->disk_ord_tbl[i] = __cpu_to_le32(0); | |
1088 | } | |
1089 | ||
1090 | return 1; | |
cdddbdbc DW |
1091 | } |
1092 | ||
bf5a934a DW |
1093 | static int init_super_imsm(struct supertype *st, mdu_array_info_t *info, |
1094 | unsigned long long size, char *name, | |
1095 | char *homehost, int *uuid) | |
1096 | { | |
1097 | /* This is primarily called by Create when creating a new array. | |
1098 | * We will then get add_to_super called for each component, and then | |
1099 | * write_init_super called to write it out to each device. | |
1100 | * For IMSM, Create can create on fresh devices or on a pre-existing | |
1101 | * array. | |
1102 | * To create on a pre-existing array a different method will be called. | |
1103 | * This one is just for fresh drives. | |
1104 | */ | |
1105 | struct intel_super *super; | |
1106 | struct imsm_super *mpb; | |
1107 | size_t mpb_size; | |
1108 | ||
1109 | if (!info) { | |
1110 | st->sb = NULL; | |
1111 | return 0; | |
1112 | } | |
1113 | if (st->sb) | |
1114 | return init_super_imsm_volume(st, info, size, name, homehost, | |
1115 | uuid); | |
1116 | ||
1117 | super = alloc_super(1); | |
1118 | if (!super) | |
1119 | return 0; | |
1120 | mpb_size = disks_to_mpb_size(info->nr_disks); | |
1121 | if (posix_memalign((void**)&mpb, 512, mpb_size) != 0) { | |
1122 | free(super); | |
1123 | return 0; | |
1124 | } | |
1125 | memset(mpb, 0, mpb_size); | |
1126 | ||
1127 | memcpy(mpb->sig, MPB_SIGNATURE, strlen(MPB_SIGNATURE)); | |
1128 | memcpy(mpb->sig + strlen(MPB_SIGNATURE), MPB_VERSION_RAID5, | |
1129 | strlen(MPB_VERSION_RAID5)); | |
1130 | mpb->mpb_size = mpb_size; | |
1131 | ||
1132 | super->mpb = mpb; | |
1133 | st->sb = super; | |
1134 | return 1; | |
1135 | } | |
1136 | ||
1137 | static void add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk, | |
1138 | int fd, char *devname) | |
1139 | { | |
1140 | struct intel_super *super = st->sb; | |
1141 | struct imsm_super *mpb = super->mpb; | |
1142 | struct dl *dl; | |
1143 | struct imsm_dev *dev; | |
1144 | struct imsm_map *map; | |
1145 | struct imsm_disk *disk; | |
1146 | __u32 status; | |
1147 | ||
1148 | dev = get_imsm_dev(mpb, super->current_vol); | |
1149 | map = &dev->vol.map[0]; | |
1150 | ||
1151 | for (dl = super->disks; dl ; dl = dl->next) | |
1152 | if (dl->major == dk->major && | |
1153 | dl->minor == dk->minor) | |
1154 | break; | |
1155 | if (!dl || ! (dk->state & (1<<MD_DISK_SYNC))) | |
1156 | return; | |
1157 | ||
1158 | map->disk_ord_tbl[dk->number] = __cpu_to_le32(dl->index); | |
1159 | ||
1160 | disk = get_imsm_disk(mpb, dl->index); | |
1161 | status = CONFIGURED_DISK | USABLE_DISK; | |
1162 | disk->status = __cpu_to_le32(status); | |
1163 | } | |
1164 | ||
c2c087e6 | 1165 | static void add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk, |
cdddbdbc DW |
1166 | int fd, char *devname) |
1167 | { | |
c2c087e6 DW |
1168 | struct intel_super *super = st->sb; |
1169 | struct imsm_super *mpb = super->mpb; | |
1170 | struct imsm_disk *disk; | |
1171 | struct dl *dd; | |
1172 | unsigned long long size; | |
1173 | __u32 status, id; | |
1174 | int rv; | |
1175 | struct stat stb; | |
1176 | ||
bf5a934a DW |
1177 | if (super->current_vol >= 0) { |
1178 | add_to_super_imsm_volume(st, dk, fd, devname); | |
1179 | return; | |
1180 | } | |
1181 | ||
c2c087e6 DW |
1182 | fstat(fd, &stb); |
1183 | dd = malloc(sizeof(*dd)); | |
1184 | if (!dd) { | |
1185 | fprintf(stderr, | |
1186 | Name ": malloc failed %s:%d.\n", __func__, __LINE__); | |
1187 | abort(); | |
1188 | } | |
1189 | memset(dd, 0, sizeof(*dd)); | |
1190 | dd->major = major(stb.st_rdev); | |
1191 | dd->minor = minor(stb.st_rdev); | |
1192 | dd->index = dk->number; | |
1193 | dd->devname = devname ? strdup(devname) : NULL; | |
1194 | dd->next = super->disks; | |
1195 | dd->fd = fd; | |
1196 | rv = imsm_read_serial(fd, devname, dd->serial); | |
1197 | if (rv) { | |
1198 | fprintf(stderr, | |
1199 | Name ": failed to retrieve scsi serial " | |
1200 | "using \'%s\' instead\n", devname); | |
1201 | strcpy((char *) dd->serial, devname); | |
1202 | } | |
1203 | ||
1204 | if (mpb->num_disks <= dk->number) | |
1205 | mpb->num_disks = dk->number + 1; | |
1206 | ||
1207 | disk = get_imsm_disk(mpb, dk->number); | |
1208 | get_dev_size(fd, NULL, &size); | |
1209 | size /= 512; | |
1210 | status = USABLE_DISK | SPARE_DISK; | |
1211 | strcpy((char *) disk->serial, (char *) dd->serial); | |
1212 | disk->total_blocks = __cpu_to_le32(size); | |
1213 | disk->status = __cpu_to_le32(status); | |
1214 | if (sysfs_disk_to_scsi_id(fd, &id) == 0) | |
1215 | disk->scsi_id = __cpu_to_le32(id); | |
1216 | else | |
1217 | disk->scsi_id = __cpu_to_le32(0); | |
1218 | ||
1219 | /* update the family number if we are creating a container */ | |
1220 | if (super->creating_imsm) | |
1221 | mpb->family_num = __cpu_to_le32(gen_imsm_checksum(mpb)); | |
1222 | ||
1223 | super->disks = dd; | |
cdddbdbc DW |
1224 | } |
1225 | ||
c2c087e6 DW |
1226 | static int store_imsm_mpb(int fd, struct intel_super *super); |
1227 | ||
1228 | static int write_super_imsm(struct intel_super *super, int doclose) | |
cdddbdbc | 1229 | { |
c2c087e6 DW |
1230 | struct imsm_super *mpb = super->mpb; |
1231 | struct dl *d; | |
1232 | __u32 generation; | |
1233 | __u32 sum; | |
cdddbdbc | 1234 | |
c2c087e6 DW |
1235 | /* 'generation' is incremented everytime the metadata is written */ |
1236 | generation = __le32_to_cpu(mpb->generation_num); | |
1237 | generation++; | |
1238 | mpb->generation_num = __cpu_to_le32(generation); | |
1239 | ||
1240 | /* recalculate checksum */ | |
1241 | sum = gen_imsm_checksum(mpb); | |
1242 | mpb->check_sum = __cpu_to_le32(sum); | |
1243 | ||
1244 | for (d = super->disks; d ; d = d->next) { | |
1245 | if (store_imsm_mpb(d->fd, super)) { | |
1246 | fprintf(stderr, "%s: failed for device %d:%d %s\n", | |
1247 | __func__, d->major, d->minor, strerror(errno)); | |
1248 | return 0; | |
1249 | } | |
1250 | if (doclose) { | |
1251 | close(d->fd); | |
1252 | d->fd = -1; | |
1253 | } | |
1254 | } | |
1255 | ||
1256 | return 1; | |
1257 | } | |
1258 | ||
1259 | static int write_init_super_imsm(struct supertype *st) | |
1260 | { | |
1261 | return write_super_imsm(st->sb, 1); | |
cdddbdbc DW |
1262 | } |
1263 | ||
1264 | static int store_zero_imsm(struct supertype *st, int fd) | |
1265 | { | |
551c80c1 | 1266 | unsigned long long dsize; |
6416d527 | 1267 | void *buf; |
551c80c1 DW |
1268 | |
1269 | get_dev_size(fd, NULL, &dsize); | |
1270 | ||
1271 | /* first block is stored on second to last sector of the disk */ | |
1272 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
1273 | return 1; | |
1274 | ||
ad97895e DW |
1275 | if (posix_memalign(&buf, 512, 512) != 0) |
1276 | return 1; | |
1277 | ||
551c80c1 DW |
1278 | memset(buf, 0, sizeof(buf)); |
1279 | if (write(fd, buf, sizeof(buf)) != sizeof(buf)) | |
1280 | return 1; | |
cdddbdbc DW |
1281 | return 0; |
1282 | } | |
1283 | ||
cdddbdbc DW |
1284 | static int validate_geometry_imsm_container(struct supertype *st, int level, |
1285 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 1286 | unsigned long long size, char *dev, |
2c514b71 NB |
1287 | unsigned long long *freesize, |
1288 | int verbose) | |
cdddbdbc | 1289 | { |
c2c087e6 DW |
1290 | int fd; |
1291 | unsigned long long ldsize; | |
cdddbdbc | 1292 | |
c2c087e6 DW |
1293 | if (level != LEVEL_CONTAINER) |
1294 | return 0; | |
1295 | if (!dev) | |
1296 | return 1; | |
1297 | ||
1298 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
1299 | if (fd < 0) { | |
2c514b71 NB |
1300 | if (verbose) |
1301 | fprintf(stderr, Name ": imsm: Cannot open %s: %s\n", | |
1302 | dev, strerror(errno)); | |
c2c087e6 DW |
1303 | return 0; |
1304 | } | |
1305 | if (!get_dev_size(fd, dev, &ldsize)) { | |
1306 | close(fd); | |
1307 | return 0; | |
1308 | } | |
1309 | close(fd); | |
1310 | ||
1311 | *freesize = avail_size_imsm(st, ldsize >> 9); | |
1312 | ||
1313 | return 1; | |
cdddbdbc DW |
1314 | } |
1315 | ||
c2c087e6 DW |
1316 | /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd |
1317 | * FIX ME add ahci details | |
1318 | */ | |
8b353278 DW |
1319 | static int validate_geometry_imsm_volume(struct supertype *st, int level, |
1320 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 1321 | unsigned long long size, char *dev, |
2c514b71 NB |
1322 | unsigned long long *freesize, |
1323 | int verbose) | |
cdddbdbc | 1324 | { |
c2c087e6 DW |
1325 | struct stat stb; |
1326 | struct intel_super *super = st->sb; | |
1327 | struct dl *dl; | |
1328 | unsigned long long pos = 0; | |
1329 | unsigned long long maxsize; | |
1330 | struct extent *e; | |
1331 | int i; | |
cdddbdbc | 1332 | |
c2c087e6 DW |
1333 | if (level == LEVEL_CONTAINER) |
1334 | return 0; | |
1335 | ||
1336 | if (level == 1 && raiddisks > 2) { | |
2c514b71 NB |
1337 | if (verbose) |
1338 | fprintf(stderr, Name ": imsm does not support more " | |
1339 | "than 2 in a raid1 configuration\n"); | |
c2c087e6 DW |
1340 | return 0; |
1341 | } | |
1342 | ||
1343 | /* We must have the container info already read in. */ | |
1344 | if (!super) | |
1345 | return 0; | |
1346 | ||
1347 | if (!dev) { | |
1348 | /* General test: make sure there is space for | |
1349 | * 'raiddisks' device extents of size 'size'. | |
1350 | */ | |
1351 | unsigned long long minsize = size*2 /* convert to blocks */; | |
1352 | int dcnt = 0; | |
1353 | if (minsize == 0) | |
1354 | minsize = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
1355 | for (dl = super->disks; dl ; dl = dl->next) { | |
1356 | int found = 0; | |
1357 | ||
bf5a934a | 1358 | pos = 0; |
c2c087e6 DW |
1359 | i = 0; |
1360 | e = get_extents(super, dl); | |
1361 | if (!e) continue; | |
1362 | do { | |
1363 | unsigned long long esize; | |
1364 | esize = e[i].start - pos; | |
1365 | if (esize >= minsize) | |
1366 | found = 1; | |
1367 | pos = e[i].start + e[i].size; | |
1368 | i++; | |
1369 | } while (e[i-1].size); | |
1370 | if (found) | |
1371 | dcnt++; | |
1372 | free(e); | |
1373 | } | |
1374 | if (dcnt < raiddisks) { | |
2c514b71 NB |
1375 | if (verbose) |
1376 | fprintf(stderr, Name ": imsm: Not enough " | |
1377 | "devices with space for this array " | |
1378 | "(%d < %d)\n", | |
1379 | dcnt, raiddisks); | |
c2c087e6 DW |
1380 | return 0; |
1381 | } | |
1382 | return 1; | |
1383 | } | |
1384 | /* This device must be a member of the set */ | |
1385 | if (stat(dev, &stb) < 0) | |
1386 | return 0; | |
1387 | if ((S_IFMT & stb.st_mode) != S_IFBLK) | |
1388 | return 0; | |
1389 | for (dl = super->disks ; dl ; dl = dl->next) { | |
1390 | if (dl->major == major(stb.st_rdev) && | |
1391 | dl->minor == minor(stb.st_rdev)) | |
1392 | break; | |
1393 | } | |
1394 | if (!dl) { | |
2c514b71 NB |
1395 | if (verbose) |
1396 | fprintf(stderr, Name ": %s is not in the " | |
1397 | "same imsm set\n", dev); | |
c2c087e6 DW |
1398 | return 0; |
1399 | } | |
1400 | e = get_extents(super, dl); | |
1401 | maxsize = 0; | |
1402 | i = 0; | |
1403 | if (e) do { | |
1404 | unsigned long long esize; | |
1405 | esize = e[i].start - pos; | |
1406 | if (esize >= maxsize) | |
1407 | maxsize = esize; | |
1408 | pos = e[i].start + e[i].size; | |
1409 | i++; | |
1410 | } while (e[i-1].size); | |
1411 | *freesize = maxsize; | |
1412 | ||
1413 | return 1; | |
cdddbdbc DW |
1414 | } |
1415 | ||
bf5a934a DW |
1416 | static int validate_geometry_imsm(struct supertype *st, int level, int layout, |
1417 | int raiddisks, int chunk, unsigned long long size, | |
1418 | char *dev, unsigned long long *freesize, | |
1419 | int verbose) | |
1420 | { | |
1421 | int fd, cfd; | |
1422 | struct mdinfo *sra; | |
1423 | ||
1424 | /* if given unused devices create a container | |
1425 | * if given given devices in a container create a member volume | |
1426 | */ | |
1427 | if (level == LEVEL_CONTAINER) { | |
1428 | /* Must be a fresh device to add to a container */ | |
1429 | return validate_geometry_imsm_container(st, level, layout, | |
1430 | raiddisks, chunk, size, | |
1431 | dev, freesize, | |
1432 | verbose); | |
1433 | } | |
1434 | ||
1435 | if (st->sb) { | |
1436 | /* creating in a given container */ | |
1437 | return validate_geometry_imsm_volume(st, level, layout, | |
1438 | raiddisks, chunk, size, | |
1439 | dev, freesize, verbose); | |
1440 | } | |
1441 | ||
1442 | /* limit creation to the following levels */ | |
1443 | if (!dev) | |
1444 | switch (level) { | |
1445 | case 0: | |
1446 | case 1: | |
1447 | case 10: | |
1448 | case 5: | |
1449 | break; | |
1450 | default: | |
1451 | return 1; | |
1452 | } | |
1453 | ||
1454 | /* This device needs to be a device in an 'imsm' container */ | |
1455 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
1456 | if (fd >= 0) { | |
1457 | if (verbose) | |
1458 | fprintf(stderr, | |
1459 | Name ": Cannot create this array on device %s\n", | |
1460 | dev); | |
1461 | close(fd); | |
1462 | return 0; | |
1463 | } | |
1464 | if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) { | |
1465 | if (verbose) | |
1466 | fprintf(stderr, Name ": Cannot open %s: %s\n", | |
1467 | dev, strerror(errno)); | |
1468 | return 0; | |
1469 | } | |
1470 | /* Well, it is in use by someone, maybe an 'imsm' container. */ | |
1471 | cfd = open_container(fd); | |
1472 | if (cfd < 0) { | |
1473 | close(fd); | |
1474 | if (verbose) | |
1475 | fprintf(stderr, Name ": Cannot use %s: It is busy\n", | |
1476 | dev); | |
1477 | return 0; | |
1478 | } | |
1479 | sra = sysfs_read(cfd, 0, GET_VERSION); | |
1480 | close(fd); | |
1481 | if (sra && sra->array.major_version == -1 && | |
1482 | strcmp(sra->text_version, "imsm") == 0) { | |
1483 | /* This is a member of a imsm container. Load the container | |
1484 | * and try to create a volume | |
1485 | */ | |
1486 | struct intel_super *super; | |
1487 | ||
1488 | if (load_super_imsm_all(st, cfd, (void **) &super, NULL, 1) == 0) { | |
1489 | st->sb = super; | |
1490 | st->container_dev = fd2devnum(cfd); | |
1491 | close(cfd); | |
1492 | return validate_geometry_imsm_volume(st, level, layout, | |
1493 | raiddisks, chunk, | |
1494 | size, dev, | |
1495 | freesize, verbose); | |
1496 | } | |
1497 | close(cfd); | |
1498 | } else /* may belong to another container */ | |
1499 | return 0; | |
1500 | ||
1501 | return 1; | |
1502 | } | |
1503 | ||
cdddbdbc DW |
1504 | static struct mdinfo *container_content_imsm(struct supertype *st) |
1505 | { | |
4f5bc454 DW |
1506 | /* Given a container loaded by load_super_imsm_all, |
1507 | * extract information about all the arrays into | |
1508 | * an mdinfo tree. | |
1509 | * | |
1510 | * For each imsm_dev create an mdinfo, fill it in, | |
1511 | * then look for matching devices in super->disks | |
1512 | * and create appropriate device mdinfo. | |
1513 | */ | |
1514 | struct intel_super *super = st->sb; | |
1515 | struct imsm_super *mpb = super->mpb; | |
1516 | struct mdinfo *rest = NULL; | |
1517 | int i; | |
cdddbdbc | 1518 | |
4f5bc454 DW |
1519 | for (i = 0; i < mpb->num_raid_devs; i++) { |
1520 | struct imsm_dev *dev = get_imsm_dev(mpb, i); | |
1521 | struct imsm_vol *vol = &dev->vol; | |
1522 | struct imsm_map *map = vol->map; | |
1523 | struct mdinfo *this; | |
1524 | __u64 sz; | |
1525 | int slot; | |
1526 | ||
1527 | this = malloc(sizeof(*this)); | |
1528 | memset(this, 0, sizeof(*this)); | |
1529 | this->next = rest; | |
1530 | rest = this; | |
1531 | ||
4f5bc454 DW |
1532 | this->array.level = get_imsm_raid_level(map); |
1533 | this->array.raid_disks = map->num_members; | |
c2c087e6 | 1534 | this->array.layout = imsm_level_to_layout(this->array.level); |
4f5bc454 DW |
1535 | this->array.md_minor = -1; |
1536 | this->array.ctime = 0; | |
1537 | this->array.utime = 0; | |
1538 | this->array.chunk_size = __le16_to_cpu(map->blocks_per_strip) << 9; | |
1539 | this->array.state = !vol->dirty; | |
1540 | this->container_member = i; | |
0fd5c350 DW |
1541 | if (map->map_state == IMSM_T_STATE_UNINITIALIZED || dev->vol.dirty) |
1542 | this->resync_start = 0; | |
1543 | else | |
1544 | this->resync_start = ~0ULL; | |
1545 | ||
4f5bc454 DW |
1546 | strncpy(this->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN); |
1547 | this->name[MAX_RAID_SERIAL_LEN] = 0; | |
1548 | ||
159c3a1a NB |
1549 | sprintf(this->text_version, "/%s/%d", |
1550 | devnum2devname(st->container_dev), | |
1551 | this->container_member); | |
1552 | ||
4f5bc454 DW |
1553 | memset(this->uuid, 0, sizeof(this->uuid)); |
1554 | ||
1555 | sz = __le32_to_cpu(dev->size_high); | |
1556 | sz <<= 32; | |
1557 | sz += __le32_to_cpu(dev->size_low); | |
1558 | this->component_size = sz; | |
1559 | this->array.size = this->component_size / 2; | |
1560 | ||
1561 | for (slot = 0 ; slot < map->num_members; slot++) { | |
1562 | struct imsm_disk *disk; | |
1563 | struct mdinfo *info_d; | |
1564 | struct dl *d; | |
1565 | int idx; | |
1566 | __u32 s; | |
1567 | ||
1568 | idx = __le32_to_cpu(map->disk_ord_tbl[slot] & ~(0xff << 24)); | |
1569 | for (d = super->disks; d ; d = d->next) | |
1570 | if (d->index == idx) | |
1571 | break; | |
1572 | ||
1573 | if (d == NULL) | |
1574 | break; /* shouldn't this be continue ?? */ | |
1575 | ||
1576 | info_d = malloc(sizeof(*info_d)); | |
1577 | if (!info_d) | |
1578 | break; /* ditto ?? */ | |
1579 | memset(info_d, 0, sizeof(*info_d)); | |
1580 | info_d->next = this->devs; | |
1581 | this->devs = info_d; | |
1582 | ||
1583 | disk = get_imsm_disk(mpb, idx); | |
1584 | s = __le32_to_cpu(disk->status); | |
1585 | ||
1586 | info_d->disk.number = d->index; | |
1587 | info_d->disk.major = d->major; | |
1588 | info_d->disk.minor = d->minor; | |
1589 | info_d->disk.raid_disk = slot; | |
1590 | info_d->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0; | |
1591 | info_d->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0; | |
1592 | info_d->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0; | |
1593 | ||
1594 | this->array.working_disks++; | |
1595 | ||
1596 | info_d->events = __le32_to_cpu(mpb->generation_num); | |
1597 | info_d->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
1598 | info_d->component_size = __le32_to_cpu(map->blocks_per_member); | |
1599 | if (d->devname) | |
1600 | strcpy(info_d->name, d->devname); | |
1601 | } | |
1602 | } | |
1603 | ||
1604 | return rest; | |
cdddbdbc DW |
1605 | } |
1606 | ||
845dea95 | 1607 | |
cba0191b NB |
1608 | static int imsm_open_new(struct supertype *c, struct active_array *a, |
1609 | char *inst) | |
845dea95 | 1610 | { |
4e6e574a | 1611 | dprintf("imsm: open_new %s\n", inst); |
cba0191b | 1612 | a->info.container_member = atoi(inst); |
845dea95 NB |
1613 | return 0; |
1614 | } | |
1615 | ||
c2a1e7da DW |
1616 | static __u8 imsm_check_degraded(struct imsm_super *mpb, int n, int failed) |
1617 | { | |
1618 | struct imsm_dev *dev = get_imsm_dev(mpb, n); | |
1619 | struct imsm_map *map = dev->vol.map; | |
1620 | ||
1621 | if (!failed) | |
1622 | return map->map_state; | |
1623 | ||
1624 | switch (get_imsm_raid_level(map)) { | |
1625 | case 0: | |
1626 | return IMSM_T_STATE_FAILED; | |
1627 | break; | |
1628 | case 1: | |
1629 | if (failed < map->num_members) | |
1630 | return IMSM_T_STATE_DEGRADED; | |
1631 | else | |
1632 | return IMSM_T_STATE_FAILED; | |
1633 | break; | |
1634 | case 10: | |
1635 | { | |
1636 | /** | |
1637 | * check to see if any mirrors have failed, | |
1638 | * otherwise we are degraded | |
1639 | */ | |
1640 | int device_per_mirror = 2; /* FIXME is this always the case? | |
1641 | * and are they always adjacent? | |
1642 | */ | |
1643 | int failed = 0; | |
1644 | int i; | |
1645 | ||
1646 | for (i = 0; i < map->num_members; i++) { | |
1647 | int idx = get_imsm_disk_idx(map, i); | |
1648 | struct imsm_disk *disk = get_imsm_disk(mpb, idx); | |
1649 | ||
1650 | if (__le32_to_cpu(disk->status) & FAILED_DISK) | |
1651 | failed++; | |
1652 | ||
1653 | if (failed >= device_per_mirror) | |
1654 | return IMSM_T_STATE_FAILED; | |
1655 | ||
1656 | /* reset 'failed' for next mirror set */ | |
1657 | if (!((i + 1) % device_per_mirror)) | |
1658 | failed = 0; | |
1659 | } | |
1660 | ||
1661 | return IMSM_T_STATE_DEGRADED; | |
1662 | } | |
1663 | case 5: | |
1664 | if (failed < 2) | |
1665 | return IMSM_T_STATE_DEGRADED; | |
1666 | else | |
1667 | return IMSM_T_STATE_FAILED; | |
1668 | break; | |
1669 | default: | |
1670 | break; | |
1671 | } | |
1672 | ||
1673 | return map->map_state; | |
1674 | } | |
1675 | ||
1676 | static int imsm_count_failed(struct imsm_super *mpb, struct imsm_map *map) | |
1677 | { | |
1678 | int i; | |
1679 | int failed = 0; | |
1680 | struct imsm_disk *disk; | |
1681 | ||
1682 | for (i = 0; i < map->num_members; i++) { | |
1683 | int idx = get_imsm_disk_idx(map, i); | |
1684 | ||
1685 | disk = get_imsm_disk(mpb, idx); | |
1686 | if (__le32_to_cpu(disk->status) & FAILED_DISK) | |
1687 | failed++; | |
1688 | } | |
1689 | ||
1690 | return failed; | |
845dea95 NB |
1691 | } |
1692 | ||
a862209d DW |
1693 | static void imsm_set_array_state(struct active_array *a, int consistent) |
1694 | { | |
1695 | int inst = a->info.container_member; | |
1696 | struct intel_super *super = a->container->sb; | |
1697 | struct imsm_dev *dev = get_imsm_dev(super->mpb, inst); | |
1698 | struct imsm_map *map = &dev->vol.map[0]; | |
1699 | int dirty = !consistent; | |
1700 | int failed; | |
1701 | __u8 map_state; | |
1702 | ||
1703 | if (a->resync_start == ~0ULL) { | |
1704 | failed = imsm_count_failed(super->mpb, map); | |
1705 | map_state = imsm_check_degraded(super->mpb, inst, failed); | |
1706 | if (!failed) | |
1707 | map_state = IMSM_T_STATE_NORMAL; | |
1708 | if (map->map_state != map_state) { | |
4e6e574a | 1709 | dprintf("imsm: map_state %d: %d\n", |
a862209d DW |
1710 | inst, map_state); |
1711 | map->map_state = map_state; | |
1712 | super->updates_pending++; | |
1713 | } | |
1714 | } | |
1715 | ||
1716 | if (dev->vol.dirty != dirty) { | |
4e6e574a | 1717 | dprintf("imsm: mark '%s' (%llu)\n", |
a862209d DW |
1718 | dirty?"dirty":"clean", a->resync_start); |
1719 | ||
1720 | dev->vol.dirty = dirty; | |
1721 | super->updates_pending++; | |
1722 | } | |
1723 | } | |
1724 | ||
8d45d196 | 1725 | static void imsm_set_disk(struct active_array *a, int n, int state) |
845dea95 | 1726 | { |
8d45d196 DW |
1727 | int inst = a->info.container_member; |
1728 | struct intel_super *super = a->container->sb; | |
1729 | struct imsm_dev *dev = get_imsm_dev(super->mpb, inst); | |
1730 | struct imsm_map *map = dev->vol.map; | |
1731 | struct imsm_disk *disk; | |
1732 | __u32 status; | |
1733 | int failed = 0; | |
1734 | int new_failure = 0; | |
1735 | ||
1736 | if (n > map->num_members) | |
1737 | fprintf(stderr, "imsm: set_disk %d out of range 0..%d\n", | |
1738 | n, map->num_members - 1); | |
1739 | ||
1740 | if (n < 0) | |
1741 | return; | |
1742 | ||
4e6e574a | 1743 | dprintf("imsm: set_disk %d:%x\n", n, state); |
8d45d196 DW |
1744 | |
1745 | disk = get_imsm_disk(super->mpb, get_imsm_disk_idx(map, n)); | |
1746 | ||
1747 | /* check if we have seen this failure before */ | |
1748 | status = __le32_to_cpu(disk->status); | |
1749 | if ((state & DS_FAULTY) && !(status & FAILED_DISK)) { | |
1750 | status |= FAILED_DISK; | |
1751 | disk->status = __cpu_to_le32(status); | |
1752 | new_failure = 1; | |
1753 | } | |
1754 | ||
1755 | /** | |
1756 | * the number of failures have changed, count up 'failed' to determine | |
1757 | * degraded / failed status | |
1758 | */ | |
1759 | if (new_failure && map->map_state != IMSM_T_STATE_FAILED) | |
1760 | failed = imsm_count_failed(super->mpb, map); | |
1761 | ||
1762 | if (failed) | |
1763 | map->map_state = imsm_check_degraded(super->mpb, inst, failed); | |
1764 | ||
1765 | if (new_failure) | |
1766 | super->updates_pending++; | |
845dea95 NB |
1767 | } |
1768 | ||
c2a1e7da DW |
1769 | static int store_imsm_mpb(int fd, struct intel_super *super) |
1770 | { | |
1771 | struct imsm_super *mpb = super->mpb; | |
1772 | __u32 mpb_size = __le32_to_cpu(mpb->mpb_size); | |
1773 | unsigned long long dsize; | |
1774 | unsigned long long sectors; | |
1775 | ||
1776 | get_dev_size(fd, NULL, &dsize); | |
1777 | ||
272f648f DW |
1778 | if (mpb_size > 512) { |
1779 | /* -1 to account for anchor */ | |
1780 | sectors = mpb_sectors(mpb) - 1; | |
c2a1e7da | 1781 | |
272f648f DW |
1782 | /* write the extended mpb to the sectors preceeding the anchor */ |
1783 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) | |
1784 | return 1; | |
c2a1e7da | 1785 | |
99e29264 | 1786 | if (write(fd, super->buf + 512, 512 * sectors) != 512 * sectors) |
272f648f DW |
1787 | return 1; |
1788 | } | |
c2a1e7da | 1789 | |
272f648f DW |
1790 | /* first block is stored on second to last sector of the disk */ |
1791 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
c2a1e7da DW |
1792 | return 1; |
1793 | ||
272f648f | 1794 | if (write(fd, super->buf, 512) != 512) |
c2a1e7da DW |
1795 | return 1; |
1796 | ||
1797 | fsync(fd); | |
1798 | ||
1799 | return 0; | |
1800 | } | |
1801 | ||
2e735d19 | 1802 | static void imsm_sync_metadata(struct supertype *container) |
845dea95 | 1803 | { |
2e735d19 | 1804 | struct intel_super *super = container->sb; |
c2a1e7da DW |
1805 | |
1806 | if (!super->updates_pending) | |
1807 | return; | |
1808 | ||
c2c087e6 | 1809 | write_super_imsm(super, 0); |
c2a1e7da DW |
1810 | |
1811 | super->updates_pending = 0; | |
845dea95 NB |
1812 | } |
1813 | ||
cdddbdbc DW |
1814 | struct superswitch super_imsm = { |
1815 | #ifndef MDASSEMBLE | |
1816 | .examine_super = examine_super_imsm, | |
1817 | .brief_examine_super = brief_examine_super_imsm, | |
1818 | .detail_super = detail_super_imsm, | |
1819 | .brief_detail_super = brief_detail_super_imsm, | |
bf5a934a | 1820 | .write_init_super = write_init_super_imsm, |
cdddbdbc DW |
1821 | #endif |
1822 | .match_home = match_home_imsm, | |
1823 | .uuid_from_super= uuid_from_super_imsm, | |
1824 | .getinfo_super = getinfo_super_imsm, | |
1825 | .update_super = update_super_imsm, | |
1826 | ||
1827 | .avail_size = avail_size_imsm, | |
1828 | ||
1829 | .compare_super = compare_super_imsm, | |
1830 | ||
1831 | .load_super = load_super_imsm, | |
bf5a934a DW |
1832 | .init_super = init_super_imsm, |
1833 | .add_to_super = add_to_super_imsm, | |
cdddbdbc DW |
1834 | .store_super = store_zero_imsm, |
1835 | .free_super = free_super_imsm, | |
1836 | .match_metadata_desc = match_metadata_desc_imsm, | |
bf5a934a | 1837 | .container_content = container_content_imsm, |
cdddbdbc DW |
1838 | |
1839 | .validate_geometry = validate_geometry_imsm, | |
cdddbdbc | 1840 | .external = 1, |
845dea95 NB |
1841 | |
1842 | /* for mdmon */ | |
1843 | .open_new = imsm_open_new, | |
1844 | .load_super = load_super_imsm, | |
ed9d66aa | 1845 | .set_array_state= imsm_set_array_state, |
845dea95 NB |
1846 | .set_disk = imsm_set_disk, |
1847 | .sync_metadata = imsm_sync_metadata, | |
cdddbdbc | 1848 | }; |