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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 */ | |
135 | int creating_dev; /* 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)); | |
160 | st->ss = &super_imsm; | |
161 | st->max_devs = IMSM_MAX_DEVICES; | |
162 | st->minor_version = 0; | |
163 | st->sb = NULL; | |
164 | return st; | |
165 | } | |
166 | ||
8b353278 | 167 | static struct supertype *match_metadata_desc_imsm_volume(char *arg) |
cdddbdbc DW |
168 | { |
169 | struct supertype *st; | |
170 | ||
8b353278 | 171 | if (strcmp(arg, "imsm/volume") != 0 && |
cdddbdbc DW |
172 | strcmp(arg, "raid") != 0 && |
173 | strcmp(arg, "default") != 0 | |
174 | ) | |
175 | return NULL; | |
176 | ||
177 | st = malloc(sizeof(*st)); | |
8b353278 | 178 | st->ss = &super_imsm_volume; |
cdddbdbc DW |
179 | st->max_devs = IMSM_MAX_DEVICES; |
180 | st->minor_version = 0; | |
181 | st->sb = NULL; | |
182 | return st; | |
183 | } | |
184 | ||
185 | static __u8 *get_imsm_version(struct imsm_super *mpb) | |
186 | { | |
187 | return &mpb->sig[MPB_SIG_LEN]; | |
188 | } | |
189 | ||
190 | static struct imsm_disk *get_imsm_disk(struct imsm_super *mpb, __u8 index) | |
191 | { | |
192 | if (index > mpb->num_disks - 1) | |
193 | return NULL; | |
194 | return &mpb->disk[index]; | |
195 | } | |
196 | ||
197 | static __u32 gen_imsm_checksum(struct imsm_super *mpb) | |
198 | { | |
199 | __u32 end = mpb->mpb_size / sizeof(end); | |
200 | __u32 *p = (__u32 *) mpb; | |
201 | __u32 sum = 0; | |
202 | ||
203 | while (end--) | |
204 | sum += __le32_to_cpu(*p++); | |
205 | ||
206 | return sum - __le32_to_cpu(mpb->check_sum); | |
207 | } | |
208 | ||
209 | static size_t sizeof_imsm_dev(struct imsm_dev *dev) | |
210 | { | |
211 | size_t size = sizeof(*dev); | |
212 | ||
213 | /* each map has disk_ord_tbl[num_members - 1] additional space */ | |
214 | size += sizeof(__u32) * (dev->vol.map[0].num_members - 1); | |
215 | ||
216 | /* migrating means an additional map */ | |
217 | if (dev->vol.migr_state) { | |
218 | size += sizeof(struct imsm_map); | |
219 | size += sizeof(__u32) * (dev->vol.map[1].num_members - 1); | |
220 | } | |
221 | ||
222 | return size; | |
223 | } | |
224 | ||
225 | static struct imsm_dev *get_imsm_dev(struct imsm_super *mpb, __u8 index) | |
226 | { | |
227 | int offset; | |
228 | int i; | |
229 | void *_mpb = mpb; | |
230 | ||
231 | if (index > mpb->num_raid_devs - 1) | |
232 | return NULL; | |
233 | ||
234 | /* devices start after all disks */ | |
235 | offset = ((void *) &mpb->disk[mpb->num_disks]) - _mpb; | |
236 | ||
237 | for (i = 0; i <= index; i++) | |
238 | if (i == index) | |
239 | return _mpb + offset; | |
240 | else | |
241 | offset += sizeof_imsm_dev(_mpb + offset); | |
242 | ||
243 | return NULL; | |
244 | } | |
245 | ||
246 | static __u32 get_imsm_disk_idx(struct imsm_map *map, int slot) | |
247 | { | |
248 | __u32 *ord_tbl = &map->disk_ord_tbl[slot]; | |
249 | ||
250 | /* top byte is 'special' */ | |
251 | return __le32_to_cpu(*ord_tbl & ~(0xff << 24)); | |
252 | } | |
253 | ||
cdddbdbc DW |
254 | static int get_imsm_raid_level(struct imsm_map *map) |
255 | { | |
256 | if (map->raid_level == 1) { | |
257 | if (map->num_members == 2) | |
258 | return 1; | |
259 | else | |
260 | return 10; | |
261 | } | |
262 | ||
263 | return map->raid_level; | |
264 | } | |
265 | ||
c2c087e6 DW |
266 | static int cmp_extent(const void *av, const void *bv) |
267 | { | |
268 | const struct extent *a = av; | |
269 | const struct extent *b = bv; | |
270 | if (a->start < b->start) | |
271 | return -1; | |
272 | if (a->start > b->start) | |
273 | return 1; | |
274 | return 0; | |
275 | } | |
276 | ||
277 | static struct extent *get_extents(struct intel_super *super, struct dl *dl) | |
278 | { | |
279 | /* find a list of used extents on the given physical device */ | |
280 | struct imsm_super *mpb = super->mpb; | |
281 | struct imsm_disk *disk; | |
282 | struct extent *rv, *e; | |
283 | int i, j; | |
284 | int memberships = 0; | |
285 | ||
286 | disk = get_imsm_disk(mpb, dl->index); | |
287 | if (!disk) | |
288 | return NULL; | |
289 | ||
290 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
291 | struct imsm_dev *dev = get_imsm_dev(mpb, i); | |
292 | struct imsm_map *map = dev->vol.map; | |
293 | ||
294 | for (j = 0; j < map->num_members; j++) { | |
295 | __u32 index = get_imsm_disk_idx(map, j); | |
296 | ||
297 | if (index == dl->index) | |
298 | memberships++; | |
299 | } | |
300 | } | |
301 | rv = malloc(sizeof(struct extent) * (memberships + 1)); | |
302 | if (!rv) | |
303 | return NULL; | |
304 | e = rv; | |
305 | ||
306 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
307 | struct imsm_dev *dev = get_imsm_dev(mpb, i); | |
308 | struct imsm_map *map = dev->vol.map; | |
309 | ||
310 | for (j = 0; j < map->num_members; j++) { | |
311 | __u32 index = get_imsm_disk_idx(map, j); | |
312 | ||
313 | if (index == dl->index) { | |
314 | e->start = __le32_to_cpu(map->pba_of_lba0); | |
315 | e->size = __le32_to_cpu(map->blocks_per_member); | |
316 | e++; | |
317 | } | |
318 | } | |
319 | } | |
320 | qsort(rv, memberships, sizeof(*rv), cmp_extent); | |
321 | ||
322 | e->start = __le32_to_cpu(disk->total_blocks) - | |
323 | (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
324 | e->size = 0; | |
325 | return rv; | |
326 | } | |
327 | ||
4f5bc454 | 328 | #ifndef MDASSEMBLE |
cdddbdbc DW |
329 | static void print_imsm_dev(struct imsm_dev *dev, int index) |
330 | { | |
331 | __u64 sz; | |
332 | int slot; | |
333 | struct imsm_map *map = dev->vol.map; | |
334 | ||
335 | printf("\n"); | |
336 | printf("[%s]:\n", dev->volume); | |
337 | printf(" RAID Level : %d\n", get_imsm_raid_level(map)); | |
338 | printf(" Members : %d\n", map->num_members); | |
339 | for (slot = 0; slot < map->num_members; slot++) | |
340 | if (index == get_imsm_disk_idx(map, slot)) | |
341 | break; | |
342 | if (slot < map->num_members) | |
343 | printf(" This Slot : %d\n", slot); | |
344 | else | |
345 | printf(" This Slot : ?\n"); | |
346 | sz = __le32_to_cpu(dev->size_high); | |
347 | sz <<= 32; | |
348 | sz += __le32_to_cpu(dev->size_low); | |
349 | printf(" Array Size : %llu%s\n", (unsigned long long)sz, | |
350 | human_size(sz * 512)); | |
351 | sz = __le32_to_cpu(map->blocks_per_member); | |
352 | printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz, | |
353 | human_size(sz * 512)); | |
354 | printf(" Sector Offset : %u\n", | |
355 | __le32_to_cpu(map->pba_of_lba0)); | |
356 | printf(" Num Stripes : %u\n", | |
357 | __le32_to_cpu(map->num_data_stripes)); | |
358 | printf(" Chunk Size : %u KiB\n", | |
359 | __le16_to_cpu(map->blocks_per_strip) / 2); | |
360 | printf(" Reserved : %d\n", __le32_to_cpu(dev->reserved_blocks)); | |
361 | printf(" Migrate State : %s\n", dev->vol.migr_state ? "migrating" : "idle"); | |
362 | printf(" Dirty State : %s\n", dev->vol.dirty ? "dirty" : "clean"); | |
363 | printf(" Map State : %s\n", map_state_str[map->map_state]); | |
364 | } | |
365 | ||
366 | static void print_imsm_disk(struct imsm_super *mpb, int index) | |
367 | { | |
368 | struct imsm_disk *disk = get_imsm_disk(mpb, index); | |
369 | char str[MAX_RAID_SERIAL_LEN]; | |
370 | __u32 s; | |
371 | __u64 sz; | |
372 | ||
373 | printf("\n"); | |
374 | snprintf(str, MAX_RAID_SERIAL_LEN, "%s", disk->serial); | |
375 | printf(" Disk%02d Serial : %s\n", index, str); | |
376 | s = __le32_to_cpu(disk->status); | |
377 | printf(" State :%s%s%s%s\n", s&SPARE_DISK ? " spare" : "", | |
378 | s&CONFIGURED_DISK ? " active" : "", | |
379 | s&FAILED_DISK ? " failed" : "", | |
380 | s&USABLE_DISK ? " usable" : ""); | |
381 | printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id)); | |
c2c087e6 DW |
382 | sz = __le32_to_cpu(disk->total_blocks) - |
383 | (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS * mpb->num_raid_devs); | |
cdddbdbc DW |
384 | printf(" Usable Size : %llu%s\n", (unsigned long long)sz, |
385 | human_size(sz * 512)); | |
386 | } | |
387 | ||
388 | static void examine_super_imsm(struct supertype *st, char *homehost) | |
389 | { | |
390 | struct intel_super *super = st->sb; | |
391 | struct imsm_super *mpb = super->mpb; | |
392 | char str[MAX_SIGNATURE_LENGTH]; | |
393 | int i; | |
394 | __u32 sum; | |
395 | ||
396 | snprintf(str, MPB_SIG_LEN, "%s", mpb->sig); | |
397 | printf(" Magic : %s\n", str); | |
398 | snprintf(str, strlen(MPB_VERSION_RAID0), "%s", get_imsm_version(mpb)); | |
399 | printf(" Version : %s\n", get_imsm_version(mpb)); | |
400 | printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num)); | |
401 | printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num)); | |
402 | sum = __le32_to_cpu(mpb->check_sum); | |
403 | printf(" Checksum : %08x %s\n", sum, | |
404 | gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect"); | |
87eb16df | 405 | printf(" MPB Sectors : %d\n", mpb_sectors(mpb)); |
cdddbdbc DW |
406 | printf(" Disks : %d\n", mpb->num_disks); |
407 | printf(" RAID Devices : %d\n", mpb->num_raid_devs); | |
408 | print_imsm_disk(mpb, super->disks->index); | |
409 | for (i = 0; i < mpb->num_raid_devs; i++) | |
410 | print_imsm_dev(get_imsm_dev(mpb, i), super->disks->index); | |
411 | for (i = 0; i < mpb->num_disks; i++) { | |
412 | if (i == super->disks->index) | |
413 | continue; | |
414 | print_imsm_disk(mpb, i); | |
415 | } | |
416 | } | |
417 | ||
418 | static void brief_examine_super_imsm(struct supertype *st) | |
419 | { | |
420 | struct intel_super *super = st->sb; | |
421 | struct imsm_super *mpb = super->mpb; | |
422 | ||
423 | printf("ARRAY /dev/imsm family=%08x metadata=external:imsm\n", | |
424 | __le32_to_cpu(mpb->family_num)); | |
425 | } | |
426 | ||
427 | static void detail_super_imsm(struct supertype *st, char *homehost) | |
428 | { | |
429 | printf("%s\n", __FUNCTION__); | |
430 | } | |
431 | ||
432 | static void brief_detail_super_imsm(struct supertype *st) | |
433 | { | |
434 | printf("%s\n", __FUNCTION__); | |
435 | } | |
436 | #endif | |
437 | ||
438 | static int match_home_imsm(struct supertype *st, char *homehost) | |
439 | { | |
440 | printf("%s\n", __FUNCTION__); | |
441 | ||
442 | return 0; | |
443 | } | |
444 | ||
445 | static void uuid_from_super_imsm(struct supertype *st, int uuid[4]) | |
446 | { | |
447 | printf("%s\n", __FUNCTION__); | |
448 | } | |
449 | ||
4f5bc454 DW |
450 | static void |
451 | get_imsm_numerical_version(struct imsm_super *mpb, int *m, int *p) | |
cdddbdbc | 452 | { |
cdddbdbc DW |
453 | __u8 *v = get_imsm_version(mpb); |
454 | __u8 *end = mpb->sig + MAX_SIGNATURE_LENGTH; | |
455 | char major[] = { 0, 0, 0 }; | |
456 | char minor[] = { 0 ,0, 0 }; | |
457 | char patch[] = { 0, 0, 0 }; | |
458 | char *ver_parse[] = { major, minor, patch }; | |
459 | int i, j; | |
460 | ||
461 | i = j = 0; | |
462 | while (*v != '\0' && v < end) { | |
463 | if (*v != '.' && j < 2) | |
464 | ver_parse[i][j++] = *v; | |
465 | else { | |
466 | i++; | |
467 | j = 0; | |
468 | } | |
469 | v++; | |
470 | } | |
471 | ||
4f5bc454 DW |
472 | *m = strtol(minor, NULL, 0); |
473 | *p = strtol(patch, NULL, 0); | |
474 | } | |
475 | ||
c2c087e6 DW |
476 | static int imsm_level_to_layout(int level) |
477 | { | |
478 | switch (level) { | |
479 | case 0: | |
480 | case 1: | |
481 | return 0; | |
482 | case 5: | |
483 | case 6: | |
484 | return ALGORITHM_LEFT_SYMMETRIC; | |
485 | case 10: | |
486 | return 0x102; //FIXME is this correct? | |
487 | } | |
488 | return -1; | |
489 | } | |
490 | ||
4f5bc454 DW |
491 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info) |
492 | { | |
493 | struct intel_super *super = st->sb; | |
494 | struct imsm_super *mpb = super->mpb; | |
495 | struct imsm_disk *disk; | |
496 | __u32 s; | |
4f5bc454 | 497 | |
cdddbdbc | 498 | info->array.major_version = 2000; |
4f5bc454 DW |
499 | get_imsm_numerical_version(mpb, &info->array.minor_version, |
500 | &info->array.patch_version); | |
cdddbdbc DW |
501 | info->array.raid_disks = mpb->num_disks; |
502 | info->array.level = LEVEL_CONTAINER; | |
503 | info->array.layout = 0; | |
504 | info->array.md_minor = -1; | |
c2c087e6 | 505 | info->array.ctime = 0; /* N/A for imsm */ |
cdddbdbc DW |
506 | info->array.utime = 0; |
507 | info->array.chunk_size = 0; | |
508 | ||
509 | info->disk.major = 0; | |
510 | info->disk.minor = 0; | |
cdddbdbc | 511 | info->disk.raid_disk = -1; |
c2c087e6 DW |
512 | info->reshape_active = 0; |
513 | strcpy(info->text_version, "imsm"); | |
514 | info->disk.number = -1; | |
515 | info->disk.state = 0; | |
516 | ||
4a04ec6c DW |
517 | if (super->disks) { |
518 | info->disk.number = super->disks->index; | |
519 | info->disk.raid_disk = super->disks->index; | |
520 | disk = get_imsm_disk(mpb, super->disks->index); | |
521 | s = __le32_to_cpu(disk->status); | |
522 | info->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0; | |
523 | info->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0; | |
524 | info->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0; | |
cdddbdbc | 525 | } |
cdddbdbc DW |
526 | } |
527 | ||
8b353278 | 528 | static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info) |
cdddbdbc | 529 | { |
c2c087e6 DW |
530 | struct intel_super *super = st->sb; |
531 | struct imsm_super *mpb = super->mpb; | |
532 | struct imsm_dev *dev = get_imsm_dev(mpb, info->container_member); | |
533 | struct imsm_map *map = &dev->vol.map[0]; | |
534 | ||
535 | info->array.major_version = 2000; | |
536 | get_imsm_numerical_version(mpb, &info->array.minor_version, | |
537 | &info->array.patch_version); | |
538 | info->array.raid_disks = map->num_members; | |
539 | info->array.level = get_imsm_raid_level(map); | |
540 | info->array.layout = imsm_level_to_layout(info->array.level); | |
541 | info->array.md_minor = -1; | |
542 | info->array.ctime = 0; | |
543 | info->array.utime = 0; | |
544 | info->array.chunk_size = __le16_to_cpu(map->blocks_per_strip * 512); | |
545 | ||
546 | info->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
547 | info->component_size = __le32_to_cpu(map->blocks_per_member); | |
548 | ||
549 | info->disk.major = 0; | |
550 | info->disk.minor = 0; | |
159c3a1a NB |
551 | |
552 | sprintf(info->text_version, "/%s/%d", | |
553 | devnum2devname(st->container_dev), | |
c2c087e6 | 554 | info->container_member); |
cdddbdbc DW |
555 | } |
556 | ||
557 | static int update_super_imsm(struct supertype *st, struct mdinfo *info, | |
558 | char *update, char *devname, int verbose, | |
559 | int uuid_set, char *homehost) | |
560 | { | |
f352c545 DW |
561 | /* FIXME */ |
562 | ||
563 | /* For 'assemble' and 'force' we need to return non-zero if any | |
564 | * change was made. For others, the return value is ignored. | |
565 | * Update options are: | |
566 | * force-one : This device looks a bit old but needs to be included, | |
567 | * update age info appropriately. | |
568 | * assemble: clear any 'faulty' flag to allow this device to | |
569 | * be assembled. | |
570 | * force-array: Array is degraded but being forced, mark it clean | |
571 | * if that will be needed to assemble it. | |
572 | * | |
573 | * newdev: not used ???? | |
574 | * grow: Array has gained a new device - this is currently for | |
575 | * linear only | |
576 | * resync: mark as dirty so a resync will happen. | |
577 | * name: update the name - preserving the homehost | |
578 | * | |
579 | * Following are not relevant for this imsm: | |
580 | * sparc2.2 : update from old dodgey metadata | |
581 | * super-minor: change the preferred_minor number | |
582 | * summaries: update redundant counters. | |
583 | * uuid: Change the uuid of the array to match watch is given | |
584 | * homehost: update the recorded homehost | |
585 | * _reshape_progress: record new reshape_progress position. | |
586 | */ | |
587 | int rv = 0; | |
588 | //struct intel_super *super = st->sb; | |
589 | //struct imsm_super *mpb = super->mpb; | |
590 | ||
591 | if (strcmp(update, "grow") == 0) { | |
592 | } | |
593 | if (strcmp(update, "resync") == 0) { | |
594 | /* dev->vol.dirty = 1; */ | |
595 | } | |
596 | ||
597 | /* IMSM has no concept of UUID or homehost */ | |
598 | ||
599 | return rv; | |
cdddbdbc DW |
600 | } |
601 | ||
c2c087e6 | 602 | static size_t disks_to_mpb_size(int disks) |
cdddbdbc | 603 | { |
c2c087e6 | 604 | size_t size; |
cdddbdbc | 605 | |
c2c087e6 DW |
606 | size = sizeof(struct imsm_super); |
607 | size += (disks - 1) * sizeof(struct imsm_disk); | |
608 | size += 2 * sizeof(struct imsm_dev); | |
609 | /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */ | |
610 | size += (4 - 2) * sizeof(struct imsm_map); | |
611 | /* 4 possible disk_ord_tbl's */ | |
612 | size += 4 * (disks - 1) * sizeof(__u32); | |
613 | ||
614 | return size; | |
615 | } | |
616 | ||
617 | static __u64 avail_size_imsm(struct supertype *st, __u64 devsize) | |
618 | { | |
619 | if (devsize < (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS)) | |
620 | return 0; | |
621 | ||
622 | return devsize - (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
cdddbdbc DW |
623 | } |
624 | ||
625 | static int compare_super_imsm(struct supertype *st, struct supertype *tst) | |
626 | { | |
627 | /* | |
628 | * return: | |
629 | * 0 same, or first was empty, and second was copied | |
630 | * 1 second had wrong number | |
631 | * 2 wrong uuid | |
632 | * 3 wrong other info | |
633 | */ | |
634 | struct intel_super *first = st->sb; | |
635 | struct intel_super *sec = tst->sb; | |
636 | ||
637 | if (!first) { | |
638 | st->sb = tst->sb; | |
639 | tst->sb = NULL; | |
640 | return 0; | |
641 | } | |
642 | ||
643 | if (memcmp(first->mpb->sig, sec->mpb->sig, MAX_SIGNATURE_LENGTH) != 0) | |
644 | return 3; | |
645 | if (first->mpb->family_num != sec->mpb->family_num) | |
646 | return 3; | |
647 | if (first->mpb->mpb_size != sec->mpb->mpb_size) | |
648 | return 3; | |
649 | if (first->mpb->check_sum != sec->mpb->check_sum) | |
650 | return 3; | |
651 | ||
652 | return 0; | |
653 | } | |
654 | ||
655 | extern int scsi_get_serial(int fd, void *buf, size_t buf_len); | |
656 | ||
657 | static int imsm_read_serial(int fd, char *devname, | |
658 | __u8 serial[MAX_RAID_SERIAL_LEN]) | |
659 | { | |
660 | unsigned char scsi_serial[255]; | |
cdddbdbc | 661 | int sg_fd; |
cdddbdbc DW |
662 | int rv; |
663 | int rsp_len; | |
664 | int i, cnt; | |
665 | ||
666 | memset(scsi_serial, 0, sizeof(scsi_serial)); | |
cdddbdbc | 667 | |
90c8b707 | 668 | sg_fd = sysfs_disk_to_sg(fd); |
cdddbdbc DW |
669 | if (sg_fd < 0) { |
670 | if (devname) | |
671 | fprintf(stderr, | |
90c8b707 DW |
672 | Name ": Failed to open sg interface for %s: %s\n", |
673 | devname, strerror(errno)); | |
cdddbdbc DW |
674 | return 1; |
675 | } | |
676 | ||
677 | rv = scsi_get_serial(sg_fd, scsi_serial, sizeof(scsi_serial)); | |
678 | close(sg_fd); | |
679 | ||
680 | if (rv != 0) { | |
681 | if (devname) | |
682 | fprintf(stderr, | |
683 | Name ": Failed to retrieve serial for %s\n", | |
684 | devname); | |
685 | return rv; | |
686 | } | |
687 | ||
688 | rsp_len = scsi_serial[3]; | |
689 | for (i = 0, cnt = 0; i < rsp_len; i++) { | |
690 | if (!isspace(scsi_serial[4 + i])) | |
691 | serial[cnt++] = scsi_serial[4 + i]; | |
692 | if (cnt == MAX_RAID_SERIAL_LEN) | |
693 | break; | |
694 | } | |
695 | ||
696 | serial[MAX_RAID_SERIAL_LEN - 1] = '\0'; | |
697 | ||
698 | return 0; | |
699 | } | |
700 | ||
701 | static int | |
702 | load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd) | |
703 | { | |
704 | struct imsm_super *mpb = super->mpb; | |
705 | struct dl *dl; | |
706 | struct stat stb; | |
707 | struct imsm_disk *disk; | |
708 | int rv; | |
709 | int i; | |
710 | ||
711 | dl = malloc(sizeof(*dl)); | |
712 | if (!dl) { | |
713 | if (devname) | |
714 | fprintf(stderr, | |
715 | Name ": failed to allocate disk buffer for %s\n", | |
716 | devname); | |
717 | return 2; | |
718 | } | |
719 | memset(dl, 0, sizeof(*dl)); | |
720 | ||
721 | fstat(fd, &stb); | |
722 | dl->major = major(stb.st_rdev); | |
723 | dl->minor = minor(stb.st_rdev); | |
724 | dl->next = super->disks; | |
725 | dl->fd = keep_fd ? fd : -1; | |
726 | dl->devname = devname ? strdup(devname) : NULL; | |
727 | dl->index = -1; | |
728 | super->disks = dl; | |
729 | rv = imsm_read_serial(fd, devname, dl->serial); | |
730 | ||
731 | if (rv != 0) | |
732 | return 2; | |
733 | ||
734 | /* look up this disk's index */ | |
735 | for (i = 0; i < mpb->num_disks; i++) { | |
736 | disk = get_imsm_disk(mpb, i); | |
737 | ||
738 | if (memcmp(disk->serial, dl->serial, MAX_RAID_SERIAL_LEN) == 0) | |
739 | break; | |
740 | } | |
741 | ||
742 | if (i > mpb->num_disks) | |
743 | return 2; | |
744 | ||
745 | dl->index = i; | |
746 | ||
747 | return 0; | |
748 | } | |
749 | ||
750 | /* load_imsm_mpb - read matrix metadata | |
751 | * allocates super->mpb to be freed by free_super | |
752 | */ | |
753 | static int load_imsm_mpb(int fd, struct intel_super *super, char *devname) | |
754 | { | |
755 | unsigned long long dsize; | |
756 | size_t len, mpb_size; | |
757 | unsigned long long sectors; | |
758 | struct stat; | |
759 | struct imsm_super anchor; | |
760 | __u32 check_sum; | |
761 | ||
762 | memset(super, 0, sizeof(*super)); | |
763 | get_dev_size(fd, NULL, &dsize); | |
764 | ||
765 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) { | |
766 | if (devname) | |
767 | fprintf(stderr, | |
768 | Name ": Cannot seek to anchor block on %s: %s\n", | |
769 | devname, strerror(errno)); | |
770 | return 1; | |
771 | } | |
772 | ||
773 | len = sizeof(anchor); | |
774 | if (read(fd, &anchor, len) != len) { | |
775 | if (devname) | |
776 | fprintf(stderr, | |
777 | Name ": Cannot read anchor block on %s: %s\n", | |
778 | devname, strerror(errno)); | |
779 | return 1; | |
780 | } | |
781 | ||
782 | if (strncmp((char *) anchor.sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) { | |
783 | if (devname) | |
784 | fprintf(stderr, | |
785 | Name ": no IMSM anchor on %s\n", devname); | |
786 | return 2; | |
787 | } | |
788 | ||
789 | mpb_size = __le32_to_cpu(anchor.mpb_size); | |
790 | super->mpb = malloc(mpb_size < 512 ? 512 : mpb_size); | |
791 | if (!super->mpb) { | |
792 | if (devname) | |
793 | fprintf(stderr, | |
794 | Name ": unable to allocate %zu byte mpb buffer\n", | |
795 | mpb_size); | |
796 | return 2; | |
797 | } | |
798 | memcpy(super->buf, &anchor, sizeof(anchor)); | |
799 | ||
800 | /* read the rest of the first block */ | |
801 | len = 512 - sizeof(anchor); | |
802 | if (read(fd, super->buf + sizeof(anchor), len) != len) { | |
803 | if (devname) | |
804 | fprintf(stderr, | |
805 | Name ": Cannot read anchor remainder on %s: %s\n", | |
806 | devname, strerror(errno)); | |
807 | return 2; | |
808 | } | |
809 | ||
810 | sectors = mpb_sectors(&anchor) - 1; | |
811 | if (!sectors) | |
812 | return load_imsm_disk(fd, super, devname, 0); | |
813 | ||
814 | /* read the extended mpb */ | |
815 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) { | |
816 | if (devname) | |
817 | fprintf(stderr, | |
818 | Name ": Cannot seek to extended mpb on %s: %s\n", | |
819 | devname, strerror(errno)); | |
820 | return 1; | |
821 | } | |
822 | ||
823 | len = mpb_size - 512; | |
824 | if (read(fd, super->buf + 512, len) != len) { | |
825 | if (devname) | |
826 | fprintf(stderr, | |
827 | Name ": Cannot read extended mpb on %s: %s\n", | |
828 | devname, strerror(errno)); | |
829 | return 2; | |
830 | } | |
831 | ||
832 | check_sum = gen_imsm_checksum(super->mpb); | |
833 | if (check_sum != __le32_to_cpu(super->mpb->check_sum)) { | |
834 | if (devname) | |
835 | fprintf(stderr, | |
836 | Name ": IMSM checksum %x != %x on %s\n", | |
837 | check_sum, __le32_to_cpu(super->mpb->check_sum), | |
838 | devname); | |
839 | return 2; | |
840 | } | |
841 | ||
842 | return load_imsm_disk(fd, super, devname, 0); | |
843 | } | |
844 | ||
845 | struct superswitch super_imsm_container; | |
846 | ||
847 | static void free_imsm_disks(struct intel_super *super) | |
848 | { | |
849 | while (super->disks) { | |
850 | struct dl *d = super->disks; | |
851 | ||
852 | super->disks = d->next; | |
853 | if (d->fd >= 0) | |
854 | close(d->fd); | |
855 | if (d->devname) | |
856 | free(d->devname); | |
857 | free(d); | |
858 | } | |
859 | } | |
860 | ||
861 | static void free_imsm(struct intel_super *super) | |
862 | { | |
863 | if (super->mpb) | |
864 | free(super->mpb); | |
865 | free_imsm_disks(super); | |
866 | free(super); | |
867 | } | |
868 | ||
869 | ||
870 | static void free_super_imsm(struct supertype *st) | |
871 | { | |
872 | struct intel_super *super = st->sb; | |
873 | ||
874 | if (!super) | |
875 | return; | |
876 | ||
877 | free_imsm(super); | |
878 | st->sb = NULL; | |
879 | } | |
880 | ||
c2c087e6 DW |
881 | static struct intel_super *alloc_super(int creating_imsm) |
882 | { | |
883 | struct intel_super *super = malloc(sizeof(*super)); | |
884 | ||
885 | if (super) { | |
886 | memset(super, 0, sizeof(*super)); | |
887 | super->creating_imsm = creating_imsm; | |
888 | super->creating_dev = -1; | |
889 | } | |
890 | ||
891 | return super; | |
892 | } | |
893 | ||
cdddbdbc DW |
894 | #ifndef MDASSEMBLE |
895 | static int load_super_imsm_all(struct supertype *st, int fd, void **sbp, | |
896 | char *devname, int keep_fd) | |
897 | { | |
898 | struct mdinfo *sra; | |
899 | struct intel_super *super; | |
900 | struct mdinfo *sd, *best = NULL; | |
901 | __u32 bestgen = 0; | |
902 | __u32 gen; | |
903 | char nm[20]; | |
904 | int dfd; | |
905 | int rv; | |
906 | ||
907 | /* check if this disk is a member of an active array */ | |
908 | sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE); | |
909 | if (!sra) | |
910 | return 1; | |
911 | ||
912 | if (sra->array.major_version != -1 || | |
913 | sra->array.minor_version != -2 || | |
914 | strcmp(sra->text_version, "imsm") != 0) | |
915 | return 1; | |
916 | ||
c2c087e6 | 917 | super = alloc_super(0); |
cdddbdbc DW |
918 | if (!super) |
919 | return 1; | |
920 | ||
921 | /* find the most up to date disk in this array */ | |
922 | for (sd = sra->devs; sd; sd = sd->next) { | |
923 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
924 | dfd = dev_open(nm, keep_fd ? O_RDWR : O_RDONLY); | |
925 | if (!dfd) { | |
926 | free_imsm(super); | |
927 | return 2; | |
928 | } | |
929 | rv = load_imsm_mpb(dfd, super, NULL); | |
930 | if (!keep_fd) | |
931 | close(dfd); | |
932 | if (rv == 0) { | |
933 | gen = __le32_to_cpu(super->mpb->generation_num); | |
934 | if (!best || gen > bestgen) { | |
935 | bestgen = gen; | |
936 | best = sd; | |
937 | } | |
938 | } else { | |
939 | free_imsm(super); | |
940 | return 2; | |
941 | } | |
942 | } | |
943 | ||
944 | if (!best) { | |
945 | free_imsm(super); | |
946 | return 1; | |
947 | } | |
948 | ||
949 | /* load the most up to date anchor */ | |
950 | sprintf(nm, "%d:%d", best->disk.major, best->disk.minor); | |
951 | dfd = dev_open(nm, O_RDONLY); | |
952 | if (!dfd) { | |
953 | free_imsm(super); | |
954 | return 1; | |
955 | } | |
956 | rv = load_imsm_mpb(dfd, super, NULL); | |
957 | close(dfd); | |
958 | if (rv != 0) { | |
959 | free_imsm(super); | |
960 | return 2; | |
961 | } | |
962 | ||
963 | /* reset the disk list */ | |
964 | free_imsm_disks(super); | |
965 | ||
966 | /* populate disk list */ | |
967 | for (sd = sra->devs ; sd ; sd = sd->next) { | |
968 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
969 | dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY); | |
970 | if (!dfd) { | |
971 | free_imsm(super); | |
972 | return 2; | |
973 | } | |
974 | load_imsm_disk(dfd, super, NULL, keep_fd); | |
975 | if (!keep_fd) | |
976 | close(dfd); | |
977 | } | |
978 | ||
979 | *sbp = super; | |
980 | if (st->ss == NULL) { | |
981 | st->ss = &super_imsm_container; | |
982 | st->minor_version = 0; | |
983 | st->max_devs = IMSM_MAX_DEVICES; | |
f4d11639 | 984 | st->container_dev = fd2devnum(fd); |
cdddbdbc DW |
985 | } |
986 | ||
987 | return 0; | |
988 | } | |
989 | #endif | |
990 | ||
991 | static int load_super_imsm(struct supertype *st, int fd, char *devname) | |
992 | { | |
993 | struct intel_super *super; | |
994 | int rv; | |
995 | ||
996 | #ifndef MDASSEMBLE | |
3dbccbcf | 997 | if (load_super_imsm_all(st, fd, &st->sb, devname, 1) == 0) |
cdddbdbc DW |
998 | return 0; |
999 | #endif | |
1000 | ||
c2c087e6 | 1001 | super = alloc_super(0); |
cdddbdbc DW |
1002 | if (!super) { |
1003 | fprintf(stderr, | |
1004 | Name ": malloc of %zu failed.\n", | |
1005 | sizeof(*super)); | |
1006 | return 1; | |
1007 | } | |
1008 | ||
1009 | rv = load_imsm_mpb(fd, super, devname); | |
1010 | ||
1011 | if (rv) { | |
1012 | if (devname) | |
1013 | fprintf(stderr, | |
1014 | Name ": Failed to load all information " | |
1015 | "sections on %s\n", devname); | |
1016 | free_imsm(super); | |
1017 | return rv; | |
1018 | } | |
1019 | ||
1020 | st->sb = super; | |
1021 | if (st->ss == NULL) { | |
1022 | st->ss = &super_imsm; | |
1023 | st->minor_version = 0; | |
1024 | st->max_devs = IMSM_MAX_DEVICES; | |
1025 | } | |
1026 | ||
1027 | return 0; | |
1028 | } | |
1029 | ||
1030 | static int init_zero_imsm(struct supertype *st, mdu_array_info_t *info, | |
1031 | unsigned long long size, char *name, | |
1032 | char *homehost, int *uuid) | |
1033 | { | |
551c80c1 | 1034 | st->sb = NULL; |
cdddbdbc DW |
1035 | return 0; |
1036 | } | |
1037 | ||
1038 | static int init_super_imsm(struct supertype *st, mdu_array_info_t *info, | |
1039 | unsigned long long size, char *name, | |
1040 | char *homehost, int *uuid) | |
1041 | { | |
c2c087e6 DW |
1042 | /* This is primarily called by Create when creating a new array. |
1043 | * We will then get add_to_super called for each component, and then | |
1044 | * write_init_super called to write it out to each device. | |
1045 | * For IMSM, Create can create on fresh devices or on a pre-existing | |
1046 | * array. | |
1047 | * To create on a pre-existing array a different method will be called. | |
1048 | * This one is just for fresh drives. | |
1049 | */ | |
1050 | struct intel_super *super; | |
1051 | struct imsm_super *mpb; | |
1052 | size_t mpb_size; | |
cdddbdbc | 1053 | |
c2c087e6 DW |
1054 | super = alloc_super(1); |
1055 | if (!super) | |
1056 | return 0; | |
1057 | mpb_size = disks_to_mpb_size(info->nr_disks); | |
1058 | mpb = malloc(mpb_size); | |
1059 | if (!mpb) { | |
1060 | free(super); | |
1061 | return 0; | |
1062 | } | |
1063 | memset(mpb, 0, mpb_size); | |
1064 | ||
1065 | memcpy(mpb->sig, MPB_SIGNATURE, strlen(MPB_SIGNATURE)); | |
1066 | memcpy(mpb->sig + strlen(MPB_SIGNATURE), MPB_VERSION_RAID5, | |
1067 | strlen(MPB_VERSION_RAID5)); | |
1068 | mpb->mpb_size = mpb_size; | |
1069 | ||
1070 | super->mpb = mpb; | |
1071 | st->sb = super; | |
1072 | return 1; | |
cdddbdbc DW |
1073 | } |
1074 | ||
8b353278 DW |
1075 | static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info, |
1076 | unsigned long long size, char *name, | |
1077 | char *homehost, int *uuid) | |
cdddbdbc | 1078 | { |
c2c087e6 DW |
1079 | /* We are creating a volume inside a pre-existing container. |
1080 | * so st->sb is already set. | |
1081 | */ | |
1082 | struct intel_super *super = st->sb; | |
1083 | struct imsm_super *mpb = super->mpb; | |
1084 | struct imsm_dev *dev; | |
1085 | struct imsm_vol *vol; | |
1086 | struct imsm_map *map; | |
1087 | int idx = mpb->num_raid_devs; | |
1088 | int i; | |
1089 | unsigned long long array_blocks; | |
1090 | unsigned long long sz; | |
1091 | __u32 offset = 0; | |
cdddbdbc | 1092 | |
c2c087e6 DW |
1093 | if (mpb->num_raid_devs >= 2) { |
1094 | fprintf(stderr, Name": This imsm-container already has the " | |
1095 | "maximum of 2 volumes\n"); | |
1096 | return 0; | |
1097 | } | |
1098 | ||
1099 | super->creating_dev = idx; | |
1100 | mpb->num_raid_devs++; | |
1101 | dev = get_imsm_dev(mpb, idx); | |
1102 | strncpy((char *) dev->volume, name, MAX_RAID_SERIAL_LEN); | |
1103 | array_blocks = calc_array_size(info->level, info->raid_disks, | |
1104 | info->layout, info->chunk_size, | |
1105 | info->size*2); | |
1106 | dev->size_low = __cpu_to_le32((__u32) array_blocks); | |
1107 | dev->size_high = __cpu_to_le32((__u32) (array_blocks >> 32)); | |
1108 | dev->status = __cpu_to_le32(0); | |
1109 | dev->reserved_blocks = __cpu_to_le32(0); | |
1110 | vol = &dev->vol; | |
1111 | vol->migr_state = 0; | |
1112 | vol->migr_type = 0; | |
1113 | vol->dirty = 0; | |
1114 | for (i = 0; i < idx; i++) { | |
1115 | struct imsm_dev *prev = get_imsm_dev(mpb, i); | |
1116 | struct imsm_map *pmap = &prev->vol.map[0]; | |
1117 | ||
1118 | offset += __le32_to_cpu(pmap->blocks_per_member); | |
1119 | offset += IMSM_RESERVED_SECTORS; | |
1120 | } | |
1121 | map = &vol->map[0]; | |
1122 | map->pba_of_lba0 = __cpu_to_le32(offset); | |
1123 | sz = info->size * 2; | |
1124 | map->blocks_per_member = __cpu_to_le32(sz); | |
1125 | map->blocks_per_strip = __cpu_to_le16(info->chunk_size >> 9); | |
1126 | map->num_data_stripes = __cpu_to_le32(sz / (info->chunk_size >> 9)); | |
1127 | map->map_state = info->level ? IMSM_T_STATE_UNINITIALIZED : | |
1128 | IMSM_T_STATE_NORMAL; | |
1129 | if (info->level == 10) | |
1130 | map->raid_level = 1; | |
1131 | else | |
1132 | map->raid_level = info->level; | |
1133 | map->num_members = info->raid_disks; | |
1134 | for (i = 0; i < map->num_members; i++) { | |
1135 | /* initialized in add_to_super */ | |
1136 | map->disk_ord_tbl[i] = __cpu_to_le32(0); | |
1137 | } | |
1138 | ||
1139 | return 1; | |
cdddbdbc DW |
1140 | } |
1141 | ||
c2c087e6 | 1142 | static void add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk, |
cdddbdbc DW |
1143 | int fd, char *devname) |
1144 | { | |
c2c087e6 DW |
1145 | struct intel_super *super = st->sb; |
1146 | struct imsm_super *mpb = super->mpb; | |
1147 | struct imsm_disk *disk; | |
1148 | struct dl *dd; | |
1149 | unsigned long long size; | |
1150 | __u32 status, id; | |
1151 | int rv; | |
1152 | struct stat stb; | |
1153 | ||
1154 | fstat(fd, &stb); | |
1155 | dd = malloc(sizeof(*dd)); | |
1156 | if (!dd) { | |
1157 | fprintf(stderr, | |
1158 | Name ": malloc failed %s:%d.\n", __func__, __LINE__); | |
1159 | abort(); | |
1160 | } | |
1161 | memset(dd, 0, sizeof(*dd)); | |
1162 | dd->major = major(stb.st_rdev); | |
1163 | dd->minor = minor(stb.st_rdev); | |
1164 | dd->index = dk->number; | |
1165 | dd->devname = devname ? strdup(devname) : NULL; | |
1166 | dd->next = super->disks; | |
1167 | dd->fd = fd; | |
1168 | rv = imsm_read_serial(fd, devname, dd->serial); | |
1169 | if (rv) { | |
1170 | fprintf(stderr, | |
1171 | Name ": failed to retrieve scsi serial " | |
1172 | "using \'%s\' instead\n", devname); | |
1173 | strcpy((char *) dd->serial, devname); | |
1174 | } | |
1175 | ||
1176 | if (mpb->num_disks <= dk->number) | |
1177 | mpb->num_disks = dk->number + 1; | |
1178 | ||
1179 | disk = get_imsm_disk(mpb, dk->number); | |
1180 | get_dev_size(fd, NULL, &size); | |
1181 | size /= 512; | |
1182 | status = USABLE_DISK | SPARE_DISK; | |
1183 | strcpy((char *) disk->serial, (char *) dd->serial); | |
1184 | disk->total_blocks = __cpu_to_le32(size); | |
1185 | disk->status = __cpu_to_le32(status); | |
1186 | if (sysfs_disk_to_scsi_id(fd, &id) == 0) | |
1187 | disk->scsi_id = __cpu_to_le32(id); | |
1188 | else | |
1189 | disk->scsi_id = __cpu_to_le32(0); | |
1190 | ||
1191 | /* update the family number if we are creating a container */ | |
1192 | if (super->creating_imsm) | |
1193 | mpb->family_num = __cpu_to_le32(gen_imsm_checksum(mpb)); | |
1194 | ||
1195 | super->disks = dd; | |
cdddbdbc DW |
1196 | } |
1197 | ||
c2c087e6 | 1198 | static void add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk, |
8b353278 | 1199 | int fd, char *devname) |
cdddbdbc | 1200 | { |
c2c087e6 DW |
1201 | struct intel_super *super = st->sb; |
1202 | struct imsm_super *mpb = super->mpb; | |
1203 | struct dl *dl; | |
1204 | struct imsm_dev *dev; | |
1205 | struct imsm_map *map; | |
1206 | struct imsm_disk *disk; | |
1207 | __u32 status; | |
1208 | ||
1209 | if (super->creating_dev == -1) { | |
1210 | fprintf(stderr, Name ": no active raid device\n"); | |
1211 | abort(); | |
1212 | } | |
1213 | ||
1214 | dev = get_imsm_dev(mpb, super->creating_dev); | |
1215 | map = &dev->vol.map[0]; | |
1216 | ||
1217 | for (dl = super->disks; dl ; dl = dl->next) | |
1218 | if (dl->major == dk->major && | |
1219 | dl->minor == dk->minor) | |
1220 | break; | |
1221 | if (!dl || ! (dk->state & (1<<MD_DISK_SYNC))) | |
1222 | return; | |
1223 | ||
1224 | map->disk_ord_tbl[dk->number] = __cpu_to_le32(dl->index); | |
1225 | ||
1226 | disk = get_imsm_disk(mpb, dl->index); | |
1227 | status = CONFIGURED_DISK | USABLE_DISK; | |
1228 | disk->status = __cpu_to_le32(status); | |
cdddbdbc DW |
1229 | } |
1230 | ||
c2c087e6 DW |
1231 | static int store_imsm_mpb(int fd, struct intel_super *super); |
1232 | ||
1233 | static int write_super_imsm(struct intel_super *super, int doclose) | |
cdddbdbc | 1234 | { |
c2c087e6 DW |
1235 | struct imsm_super *mpb = super->mpb; |
1236 | struct dl *d; | |
1237 | __u32 generation; | |
1238 | __u32 sum; | |
cdddbdbc | 1239 | |
c2c087e6 DW |
1240 | /* 'generation' is incremented everytime the metadata is written */ |
1241 | generation = __le32_to_cpu(mpb->generation_num); | |
1242 | generation++; | |
1243 | mpb->generation_num = __cpu_to_le32(generation); | |
1244 | ||
1245 | /* recalculate checksum */ | |
1246 | sum = gen_imsm_checksum(mpb); | |
1247 | mpb->check_sum = __cpu_to_le32(sum); | |
1248 | ||
1249 | for (d = super->disks; d ; d = d->next) { | |
1250 | if (store_imsm_mpb(d->fd, super)) { | |
1251 | fprintf(stderr, "%s: failed for device %d:%d %s\n", | |
1252 | __func__, d->major, d->minor, strerror(errno)); | |
1253 | return 0; | |
1254 | } | |
1255 | if (doclose) { | |
1256 | close(d->fd); | |
1257 | d->fd = -1; | |
1258 | } | |
1259 | } | |
1260 | ||
1261 | return 1; | |
1262 | } | |
1263 | ||
1264 | static int write_init_super_imsm(struct supertype *st) | |
1265 | { | |
1266 | return write_super_imsm(st->sb, 1); | |
cdddbdbc DW |
1267 | } |
1268 | ||
1269 | static int store_zero_imsm(struct supertype *st, int fd) | |
1270 | { | |
551c80c1 DW |
1271 | unsigned long long dsize; |
1272 | char buf[512]; | |
1273 | ||
1274 | get_dev_size(fd, NULL, &dsize); | |
1275 | ||
1276 | /* first block is stored on second to last sector of the disk */ | |
1277 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
1278 | return 1; | |
1279 | ||
1280 | memset(buf, 0, sizeof(buf)); | |
1281 | if (write(fd, buf, sizeof(buf)) != sizeof(buf)) | |
1282 | return 1; | |
cdddbdbc DW |
1283 | |
1284 | return 0; | |
1285 | } | |
1286 | ||
f352c545 | 1287 | static void getinfo_super_n_imsm_container(struct supertype *st, struct mdinfo *info) |
cdddbdbc | 1288 | { |
f352c545 | 1289 | /* just need offset and size... |
c2c087e6 | 1290 | * of the metadata |
f352c545 DW |
1291 | */ |
1292 | struct intel_super *super = st->sb; | |
1293 | struct imsm_super *mpb = super->mpb; | |
1294 | struct imsm_disk *disk = get_imsm_disk(mpb, info->disk.number); | |
f352c545 | 1295 | |
c2c087e6 DW |
1296 | info->data_offset = __le32_to_cpu(disk->total_blocks) - |
1297 | (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
1298 | info->component_size = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
cdddbdbc DW |
1299 | } |
1300 | ||
8b353278 | 1301 | static void getinfo_super_n_imsm_volume(struct supertype *st, struct mdinfo *info) |
cdddbdbc | 1302 | { |
c2c087e6 DW |
1303 | /* Find the particular details for info->disk.raid_disk. |
1304 | * This includes data_offset, component_size, | |
1305 | */ | |
1306 | struct intel_super *super = st->sb; | |
1307 | struct imsm_super *mpb = super->mpb; | |
1308 | struct imsm_dev *dev = get_imsm_dev(mpb, super->creating_dev); | |
1309 | struct imsm_map *map = &dev->vol.map[0]; | |
1310 | ||
1311 | info->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
1312 | info->component_size = __le32_to_cpu(map->blocks_per_member); | |
cdddbdbc DW |
1313 | } |
1314 | ||
1315 | static int validate_geometry_imsm(struct supertype *st, int level, int layout, | |
1316 | int raiddisks, int chunk, unsigned long long size, | |
c2c087e6 | 1317 | char *dev, unsigned long long *freesize) |
cdddbdbc | 1318 | { |
c2c087e6 DW |
1319 | int fd, cfd; |
1320 | struct mdinfo *sra; | |
cdddbdbc | 1321 | |
c2c087e6 DW |
1322 | /* if given unused devices create a container |
1323 | * if given given devices in a container create a member volume | |
1324 | */ | |
1325 | if (level == LEVEL_CONTAINER) { | |
1326 | st->ss = &super_imsm_container; | |
1327 | if (dev) { | |
1328 | /* validate the container, dev == NULL */ | |
1329 | int rv = st->ss->validate_geometry(st, level, layout, | |
1330 | raiddisks, chunk, | |
1331 | size, | |
1332 | NULL, freesize); | |
1333 | if (rv) | |
1334 | return rv; | |
1335 | } | |
1336 | return st->ss->validate_geometry(st, level, layout, raiddisks, | |
1337 | chunk, size, dev, freesize); | |
1338 | } | |
1339 | ||
1340 | if (st->sb) { | |
1341 | /* creating in a given container */ | |
1342 | st->ss = &super_imsm_volume; | |
1343 | if (dev) { | |
1344 | int rv = st->ss->validate_geometry(st, level, layout, | |
1345 | raiddisks, chunk, | |
1346 | size, | |
1347 | NULL, freesize); | |
1348 | if (rv) | |
1349 | return rv; | |
1350 | } | |
1351 | return st->ss->validate_geometry(st, level, layout, raiddisks, | |
1352 | chunk, size, dev, freesize); | |
1353 | } | |
1354 | ||
1355 | /* limit creation to the following levels */ | |
1356 | if (!dev) | |
1357 | switch (level) { | |
1358 | case 0: | |
1359 | case 1: | |
1360 | case 10: | |
1361 | case 5: | |
1362 | break; | |
1363 | default: | |
1364 | return 1; | |
1365 | } | |
1366 | ||
1367 | /* This device needs to be a device in an 'imsm' container */ | |
1368 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
1369 | if (fd >= 0) { | |
1370 | fprintf(stderr, | |
1371 | Name ": Cannot create this array on device %s\n", | |
1372 | dev); | |
1373 | close(fd); | |
1374 | return 0; | |
1375 | } | |
1376 | if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) { | |
1377 | fprintf(stderr, Name ": Cannot open %s: %s\n", | |
1378 | dev, strerror(errno)); | |
1379 | return 0; | |
1380 | } | |
1381 | /* Well, it is in use by someone, maybe an 'imsm' container. */ | |
1382 | cfd = open_container(fd); | |
1383 | if (cfd < 0) { | |
1384 | close(fd); | |
1385 | fprintf(stderr, Name ": Cannot use %s: It is busy\n", | |
1386 | dev); | |
1387 | return 0; | |
1388 | } | |
1389 | sra = sysfs_read(cfd, 0, GET_VERSION); | |
1390 | close(fd); | |
1391 | if (sra && sra->array.major_version == -1 && | |
1392 | strcmp(sra->text_version, "imsm") == 0) { | |
1393 | /* This is a member of a imsm container. Load the container | |
1394 | * and try to create a volume | |
1395 | */ | |
1396 | struct intel_super *super; | |
1397 | st->ss = &super_imsm_volume; | |
1398 | if (load_super_imsm_all(st, cfd, (void **) &super, NULL, 1) == 0) { | |
1399 | st->sb = super; | |
1400 | st->container_dev = fd2devnum(cfd); | |
1401 | close(cfd); | |
1402 | return st->ss->validate_geometry(st, level, layout, | |
1403 | raiddisks, chunk, size, | |
1404 | dev, freesize); | |
1405 | } | |
1406 | close(cfd); | |
1407 | } else /* may belong to another container */ | |
1408 | return 0; | |
1409 | ||
1410 | return 1; | |
cdddbdbc DW |
1411 | } |
1412 | ||
1413 | static int validate_geometry_imsm_container(struct supertype *st, int level, | |
1414 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 1415 | unsigned long long size, char *dev, |
cdddbdbc DW |
1416 | unsigned long long *freesize) |
1417 | { | |
c2c087e6 DW |
1418 | int fd; |
1419 | unsigned long long ldsize; | |
cdddbdbc | 1420 | |
c2c087e6 DW |
1421 | if (level != LEVEL_CONTAINER) |
1422 | return 0; | |
1423 | if (!dev) | |
1424 | return 1; | |
1425 | ||
1426 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
1427 | if (fd < 0) { | |
1428 | fprintf(stderr, Name ": Cannot open %s: %s\n", | |
1429 | dev, strerror(errno)); | |
1430 | return 0; | |
1431 | } | |
1432 | if (!get_dev_size(fd, dev, &ldsize)) { | |
1433 | close(fd); | |
1434 | return 0; | |
1435 | } | |
1436 | close(fd); | |
1437 | ||
1438 | *freesize = avail_size_imsm(st, ldsize >> 9); | |
1439 | ||
1440 | return 1; | |
cdddbdbc DW |
1441 | } |
1442 | ||
c2c087e6 DW |
1443 | /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd |
1444 | * FIX ME add ahci details | |
1445 | */ | |
8b353278 DW |
1446 | static int validate_geometry_imsm_volume(struct supertype *st, int level, |
1447 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 1448 | unsigned long long size, char *dev, |
8b353278 | 1449 | unsigned long long *freesize) |
cdddbdbc | 1450 | { |
c2c087e6 DW |
1451 | struct stat stb; |
1452 | struct intel_super *super = st->sb; | |
1453 | struct dl *dl; | |
1454 | unsigned long long pos = 0; | |
1455 | unsigned long long maxsize; | |
1456 | struct extent *e; | |
1457 | int i; | |
cdddbdbc | 1458 | |
c2c087e6 DW |
1459 | if (level == LEVEL_CONTAINER) |
1460 | return 0; | |
1461 | ||
1462 | if (level == 1 && raiddisks > 2) { | |
1463 | fprintf(stderr, Name ": imsm does not support more than 2 " | |
1464 | "in a raid1 configuration\n"); | |
1465 | return 0; | |
1466 | } | |
1467 | ||
1468 | /* We must have the container info already read in. */ | |
1469 | if (!super) | |
1470 | return 0; | |
1471 | ||
1472 | if (!dev) { | |
1473 | /* General test: make sure there is space for | |
1474 | * 'raiddisks' device extents of size 'size'. | |
1475 | */ | |
1476 | unsigned long long minsize = size*2 /* convert to blocks */; | |
1477 | int dcnt = 0; | |
1478 | if (minsize == 0) | |
1479 | minsize = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
1480 | for (dl = super->disks; dl ; dl = dl->next) { | |
1481 | int found = 0; | |
1482 | ||
1483 | i = 0; | |
1484 | e = get_extents(super, dl); | |
1485 | if (!e) continue; | |
1486 | do { | |
1487 | unsigned long long esize; | |
1488 | esize = e[i].start - pos; | |
1489 | if (esize >= minsize) | |
1490 | found = 1; | |
1491 | pos = e[i].start + e[i].size; | |
1492 | i++; | |
1493 | } while (e[i-1].size); | |
1494 | if (found) | |
1495 | dcnt++; | |
1496 | free(e); | |
1497 | } | |
1498 | if (dcnt < raiddisks) { | |
1499 | fprintf(stderr, Name ": Not enough devices with space " | |
1500 | "for this array (%d < %d)\n", | |
1501 | dcnt, raiddisks); | |
1502 | return 0; | |
1503 | } | |
1504 | return 1; | |
1505 | } | |
1506 | /* This device must be a member of the set */ | |
1507 | if (stat(dev, &stb) < 0) | |
1508 | return 0; | |
1509 | if ((S_IFMT & stb.st_mode) != S_IFBLK) | |
1510 | return 0; | |
1511 | for (dl = super->disks ; dl ; dl = dl->next) { | |
1512 | if (dl->major == major(stb.st_rdev) && | |
1513 | dl->minor == minor(stb.st_rdev)) | |
1514 | break; | |
1515 | } | |
1516 | if (!dl) { | |
1517 | fprintf(stderr, Name ": %s is not in the same imsm set\n", | |
1518 | dev); | |
1519 | return 0; | |
1520 | } | |
1521 | e = get_extents(super, dl); | |
1522 | maxsize = 0; | |
1523 | i = 0; | |
1524 | if (e) do { | |
1525 | unsigned long long esize; | |
1526 | esize = e[i].start - pos; | |
1527 | if (esize >= maxsize) | |
1528 | maxsize = esize; | |
1529 | pos = e[i].start + e[i].size; | |
1530 | i++; | |
1531 | } while (e[i-1].size); | |
1532 | *freesize = maxsize; | |
1533 | ||
1534 | return 1; | |
cdddbdbc DW |
1535 | } |
1536 | ||
cdddbdbc DW |
1537 | static struct mdinfo *container_content_imsm(struct supertype *st) |
1538 | { | |
4f5bc454 DW |
1539 | /* Given a container loaded by load_super_imsm_all, |
1540 | * extract information about all the arrays into | |
1541 | * an mdinfo tree. | |
1542 | * | |
1543 | * For each imsm_dev create an mdinfo, fill it in, | |
1544 | * then look for matching devices in super->disks | |
1545 | * and create appropriate device mdinfo. | |
1546 | */ | |
1547 | struct intel_super *super = st->sb; | |
1548 | struct imsm_super *mpb = super->mpb; | |
1549 | struct mdinfo *rest = NULL; | |
1550 | int i; | |
cdddbdbc | 1551 | |
4f5bc454 DW |
1552 | for (i = 0; i < mpb->num_raid_devs; i++) { |
1553 | struct imsm_dev *dev = get_imsm_dev(mpb, i); | |
1554 | struct imsm_vol *vol = &dev->vol; | |
1555 | struct imsm_map *map = vol->map; | |
1556 | struct mdinfo *this; | |
1557 | __u64 sz; | |
1558 | int slot; | |
1559 | ||
1560 | this = malloc(sizeof(*this)); | |
1561 | memset(this, 0, sizeof(*this)); | |
1562 | this->next = rest; | |
1563 | rest = this; | |
1564 | ||
1565 | this->array.major_version = 2000; | |
1566 | get_imsm_numerical_version(mpb, &this->array.minor_version, | |
1567 | &this->array.patch_version); | |
1568 | this->array.level = get_imsm_raid_level(map); | |
1569 | this->array.raid_disks = map->num_members; | |
c2c087e6 | 1570 | this->array.layout = imsm_level_to_layout(this->array.level); |
4f5bc454 DW |
1571 | this->array.md_minor = -1; |
1572 | this->array.ctime = 0; | |
1573 | this->array.utime = 0; | |
1574 | this->array.chunk_size = __le16_to_cpu(map->blocks_per_strip) << 9; | |
1575 | this->array.state = !vol->dirty; | |
1576 | this->container_member = i; | |
0fd5c350 DW |
1577 | if (map->map_state == IMSM_T_STATE_UNINITIALIZED || dev->vol.dirty) |
1578 | this->resync_start = 0; | |
1579 | else | |
1580 | this->resync_start = ~0ULL; | |
1581 | ||
4f5bc454 DW |
1582 | strncpy(this->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN); |
1583 | this->name[MAX_RAID_SERIAL_LEN] = 0; | |
1584 | ||
159c3a1a NB |
1585 | sprintf(this->text_version, "/%s/%d", |
1586 | devnum2devname(st->container_dev), | |
1587 | this->container_member); | |
1588 | ||
4f5bc454 DW |
1589 | memset(this->uuid, 0, sizeof(this->uuid)); |
1590 | ||
1591 | sz = __le32_to_cpu(dev->size_high); | |
1592 | sz <<= 32; | |
1593 | sz += __le32_to_cpu(dev->size_low); | |
1594 | this->component_size = sz; | |
1595 | this->array.size = this->component_size / 2; | |
1596 | ||
1597 | for (slot = 0 ; slot < map->num_members; slot++) { | |
1598 | struct imsm_disk *disk; | |
1599 | struct mdinfo *info_d; | |
1600 | struct dl *d; | |
1601 | int idx; | |
1602 | __u32 s; | |
1603 | ||
1604 | idx = __le32_to_cpu(map->disk_ord_tbl[slot] & ~(0xff << 24)); | |
1605 | for (d = super->disks; d ; d = d->next) | |
1606 | if (d->index == idx) | |
1607 | break; | |
1608 | ||
1609 | if (d == NULL) | |
1610 | break; /* shouldn't this be continue ?? */ | |
1611 | ||
1612 | info_d = malloc(sizeof(*info_d)); | |
1613 | if (!info_d) | |
1614 | break; /* ditto ?? */ | |
1615 | memset(info_d, 0, sizeof(*info_d)); | |
1616 | info_d->next = this->devs; | |
1617 | this->devs = info_d; | |
1618 | ||
1619 | disk = get_imsm_disk(mpb, idx); | |
1620 | s = __le32_to_cpu(disk->status); | |
1621 | ||
1622 | info_d->disk.number = d->index; | |
1623 | info_d->disk.major = d->major; | |
1624 | info_d->disk.minor = d->minor; | |
1625 | info_d->disk.raid_disk = slot; | |
1626 | info_d->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0; | |
1627 | info_d->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0; | |
1628 | info_d->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0; | |
1629 | ||
1630 | this->array.working_disks++; | |
1631 | ||
1632 | info_d->events = __le32_to_cpu(mpb->generation_num); | |
1633 | info_d->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
1634 | info_d->component_size = __le32_to_cpu(map->blocks_per_member); | |
1635 | if (d->devname) | |
1636 | strcpy(info_d->name, d->devname); | |
1637 | } | |
1638 | } | |
1639 | ||
1640 | return rest; | |
cdddbdbc DW |
1641 | } |
1642 | ||
845dea95 | 1643 | |
cba0191b NB |
1644 | static int imsm_open_new(struct supertype *c, struct active_array *a, |
1645 | char *inst) | |
845dea95 | 1646 | { |
4e6e574a | 1647 | dprintf("imsm: open_new %s\n", inst); |
cba0191b | 1648 | a->info.container_member = atoi(inst); |
845dea95 NB |
1649 | return 0; |
1650 | } | |
1651 | ||
c2a1e7da DW |
1652 | static __u8 imsm_check_degraded(struct imsm_super *mpb, int n, int failed) |
1653 | { | |
1654 | struct imsm_dev *dev = get_imsm_dev(mpb, n); | |
1655 | struct imsm_map *map = dev->vol.map; | |
1656 | ||
1657 | if (!failed) | |
1658 | return map->map_state; | |
1659 | ||
1660 | switch (get_imsm_raid_level(map)) { | |
1661 | case 0: | |
1662 | return IMSM_T_STATE_FAILED; | |
1663 | break; | |
1664 | case 1: | |
1665 | if (failed < map->num_members) | |
1666 | return IMSM_T_STATE_DEGRADED; | |
1667 | else | |
1668 | return IMSM_T_STATE_FAILED; | |
1669 | break; | |
1670 | case 10: | |
1671 | { | |
1672 | /** | |
1673 | * check to see if any mirrors have failed, | |
1674 | * otherwise we are degraded | |
1675 | */ | |
1676 | int device_per_mirror = 2; /* FIXME is this always the case? | |
1677 | * and are they always adjacent? | |
1678 | */ | |
1679 | int failed = 0; | |
1680 | int i; | |
1681 | ||
1682 | for (i = 0; i < map->num_members; i++) { | |
1683 | int idx = get_imsm_disk_idx(map, i); | |
1684 | struct imsm_disk *disk = get_imsm_disk(mpb, idx); | |
1685 | ||
1686 | if (__le32_to_cpu(disk->status) & FAILED_DISK) | |
1687 | failed++; | |
1688 | ||
1689 | if (failed >= device_per_mirror) | |
1690 | return IMSM_T_STATE_FAILED; | |
1691 | ||
1692 | /* reset 'failed' for next mirror set */ | |
1693 | if (!((i + 1) % device_per_mirror)) | |
1694 | failed = 0; | |
1695 | } | |
1696 | ||
1697 | return IMSM_T_STATE_DEGRADED; | |
1698 | } | |
1699 | case 5: | |
1700 | if (failed < 2) | |
1701 | return IMSM_T_STATE_DEGRADED; | |
1702 | else | |
1703 | return IMSM_T_STATE_FAILED; | |
1704 | break; | |
1705 | default: | |
1706 | break; | |
1707 | } | |
1708 | ||
1709 | return map->map_state; | |
1710 | } | |
1711 | ||
1712 | static int imsm_count_failed(struct imsm_super *mpb, struct imsm_map *map) | |
1713 | { | |
1714 | int i; | |
1715 | int failed = 0; | |
1716 | struct imsm_disk *disk; | |
1717 | ||
1718 | for (i = 0; i < map->num_members; i++) { | |
1719 | int idx = get_imsm_disk_idx(map, i); | |
1720 | ||
1721 | disk = get_imsm_disk(mpb, idx); | |
1722 | if (__le32_to_cpu(disk->status) & FAILED_DISK) | |
1723 | failed++; | |
1724 | } | |
1725 | ||
1726 | return failed; | |
845dea95 NB |
1727 | } |
1728 | ||
a862209d DW |
1729 | static void imsm_set_array_state(struct active_array *a, int consistent) |
1730 | { | |
1731 | int inst = a->info.container_member; | |
1732 | struct intel_super *super = a->container->sb; | |
1733 | struct imsm_dev *dev = get_imsm_dev(super->mpb, inst); | |
1734 | struct imsm_map *map = &dev->vol.map[0]; | |
1735 | int dirty = !consistent; | |
1736 | int failed; | |
1737 | __u8 map_state; | |
1738 | ||
1739 | if (a->resync_start == ~0ULL) { | |
1740 | failed = imsm_count_failed(super->mpb, map); | |
1741 | map_state = imsm_check_degraded(super->mpb, inst, failed); | |
1742 | if (!failed) | |
1743 | map_state = IMSM_T_STATE_NORMAL; | |
1744 | if (map->map_state != map_state) { | |
4e6e574a | 1745 | dprintf("imsm: map_state %d: %d\n", |
a862209d DW |
1746 | inst, map_state); |
1747 | map->map_state = map_state; | |
1748 | super->updates_pending++; | |
1749 | } | |
1750 | } | |
1751 | ||
1752 | if (dev->vol.dirty != dirty) { | |
4e6e574a | 1753 | dprintf("imsm: mark '%s' (%llu)\n", |
a862209d DW |
1754 | dirty?"dirty":"clean", a->resync_start); |
1755 | ||
1756 | dev->vol.dirty = dirty; | |
1757 | super->updates_pending++; | |
1758 | } | |
1759 | } | |
1760 | ||
8d45d196 | 1761 | static void imsm_set_disk(struct active_array *a, int n, int state) |
845dea95 | 1762 | { |
8d45d196 DW |
1763 | int inst = a->info.container_member; |
1764 | struct intel_super *super = a->container->sb; | |
1765 | struct imsm_dev *dev = get_imsm_dev(super->mpb, inst); | |
1766 | struct imsm_map *map = dev->vol.map; | |
1767 | struct imsm_disk *disk; | |
1768 | __u32 status; | |
1769 | int failed = 0; | |
1770 | int new_failure = 0; | |
1771 | ||
1772 | if (n > map->num_members) | |
1773 | fprintf(stderr, "imsm: set_disk %d out of range 0..%d\n", | |
1774 | n, map->num_members - 1); | |
1775 | ||
1776 | if (n < 0) | |
1777 | return; | |
1778 | ||
4e6e574a | 1779 | dprintf("imsm: set_disk %d:%x\n", n, state); |
8d45d196 DW |
1780 | |
1781 | disk = get_imsm_disk(super->mpb, get_imsm_disk_idx(map, n)); | |
1782 | ||
1783 | /* check if we have seen this failure before */ | |
1784 | status = __le32_to_cpu(disk->status); | |
1785 | if ((state & DS_FAULTY) && !(status & FAILED_DISK)) { | |
1786 | status |= FAILED_DISK; | |
1787 | disk->status = __cpu_to_le32(status); | |
1788 | new_failure = 1; | |
1789 | } | |
1790 | ||
1791 | /** | |
1792 | * the number of failures have changed, count up 'failed' to determine | |
1793 | * degraded / failed status | |
1794 | */ | |
1795 | if (new_failure && map->map_state != IMSM_T_STATE_FAILED) | |
1796 | failed = imsm_count_failed(super->mpb, map); | |
1797 | ||
1798 | if (failed) | |
1799 | map->map_state = imsm_check_degraded(super->mpb, inst, failed); | |
1800 | ||
1801 | if (new_failure) | |
1802 | super->updates_pending++; | |
845dea95 NB |
1803 | } |
1804 | ||
c2a1e7da DW |
1805 | static int store_imsm_mpb(int fd, struct intel_super *super) |
1806 | { | |
1807 | struct imsm_super *mpb = super->mpb; | |
1808 | __u32 mpb_size = __le32_to_cpu(mpb->mpb_size); | |
1809 | unsigned long long dsize; | |
1810 | unsigned long long sectors; | |
1811 | ||
1812 | get_dev_size(fd, NULL, &dsize); | |
1813 | ||
272f648f DW |
1814 | if (mpb_size > 512) { |
1815 | /* -1 to account for anchor */ | |
1816 | sectors = mpb_sectors(mpb) - 1; | |
c2a1e7da | 1817 | |
272f648f DW |
1818 | /* write the extended mpb to the sectors preceeding the anchor */ |
1819 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) | |
1820 | return 1; | |
c2a1e7da | 1821 | |
272f648f DW |
1822 | if (write(fd, super->buf + 512, mpb_size - 512) != mpb_size - 512) |
1823 | return 1; | |
1824 | } | |
c2a1e7da | 1825 | |
272f648f DW |
1826 | /* first block is stored on second to last sector of the disk */ |
1827 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
c2a1e7da DW |
1828 | return 1; |
1829 | ||
272f648f | 1830 | if (write(fd, super->buf, 512) != 512) |
c2a1e7da DW |
1831 | return 1; |
1832 | ||
1833 | fsync(fd); | |
1834 | ||
1835 | return 0; | |
1836 | } | |
1837 | ||
2e735d19 | 1838 | static void imsm_sync_metadata(struct supertype *container) |
845dea95 | 1839 | { |
2e735d19 | 1840 | struct intel_super *super = container->sb; |
c2a1e7da DW |
1841 | |
1842 | if (!super->updates_pending) | |
1843 | return; | |
1844 | ||
c2c087e6 | 1845 | write_super_imsm(super, 0); |
c2a1e7da DW |
1846 | |
1847 | super->updates_pending = 0; | |
845dea95 NB |
1848 | } |
1849 | ||
cdddbdbc DW |
1850 | struct superswitch super_imsm = { |
1851 | #ifndef MDASSEMBLE | |
1852 | .examine_super = examine_super_imsm, | |
1853 | .brief_examine_super = brief_examine_super_imsm, | |
1854 | .detail_super = detail_super_imsm, | |
1855 | .brief_detail_super = brief_detail_super_imsm, | |
1856 | #endif | |
1857 | .match_home = match_home_imsm, | |
1858 | .uuid_from_super= uuid_from_super_imsm, | |
1859 | .getinfo_super = getinfo_super_imsm, | |
1860 | .update_super = update_super_imsm, | |
1861 | ||
1862 | .avail_size = avail_size_imsm, | |
1863 | ||
1864 | .compare_super = compare_super_imsm, | |
1865 | ||
1866 | .load_super = load_super_imsm, | |
1867 | .init_super = init_zero_imsm, | |
1868 | .store_super = store_zero_imsm, | |
1869 | .free_super = free_super_imsm, | |
1870 | .match_metadata_desc = match_metadata_desc_imsm, | |
f352c545 | 1871 | .getinfo_super_n = getinfo_super_n_imsm_container, |
cdddbdbc DW |
1872 | |
1873 | .validate_geometry = validate_geometry_imsm, | |
1874 | .major = 2000, | |
1875 | .swapuuid = 0, | |
1876 | .external = 1, | |
845dea95 NB |
1877 | |
1878 | /* for mdmon */ | |
1879 | .open_new = imsm_open_new, | |
1880 | .load_super = load_super_imsm, | |
ed9d66aa | 1881 | .set_array_state= imsm_set_array_state, |
845dea95 NB |
1882 | .set_disk = imsm_set_disk, |
1883 | .sync_metadata = imsm_sync_metadata, | |
cdddbdbc DW |
1884 | }; |
1885 | ||
1886 | /* super_imsm_container is set by validate_geometry_imsm when given a | |
1887 | * device that is not part of any array | |
1888 | */ | |
1889 | struct superswitch super_imsm_container = { | |
1890 | ||
1891 | .validate_geometry = validate_geometry_imsm_container, | |
1892 | .init_super = init_super_imsm, | |
1893 | .add_to_super = add_to_super_imsm, | |
1894 | .write_init_super = write_init_super_imsm, | |
1895 | .getinfo_super = getinfo_super_imsm, | |
f352c545 | 1896 | .getinfo_super_n = getinfo_super_n_imsm_container, |
cdddbdbc DW |
1897 | .load_super = load_super_imsm, |
1898 | ||
1899 | #ifndef MDASSEMBLE | |
1900 | .examine_super = examine_super_imsm, | |
1901 | .brief_examine_super = brief_examine_super_imsm, | |
1902 | .detail_super = detail_super_imsm, | |
1903 | .brief_detail_super = brief_detail_super_imsm, | |
1904 | #endif | |
1905 | ||
1906 | .free_super = free_super_imsm, | |
1907 | ||
1908 | .container_content = container_content_imsm, | |
1909 | ||
1910 | .major = 2000, | |
1911 | .swapuuid = 0, | |
1912 | .external = 1, | |
cdddbdbc DW |
1913 | }; |
1914 | ||
8b353278 | 1915 | struct superswitch super_imsm_volume = { |
cdddbdbc | 1916 | .update_super = update_super_imsm, |
8b353278 DW |
1917 | .init_super = init_super_imsm_volume, |
1918 | .add_to_super = add_to_super_imsm_volume, | |
1919 | .getinfo_super = getinfo_super_imsm_volume, | |
1920 | .getinfo_super_n = getinfo_super_n_imsm_volume, | |
cdddbdbc DW |
1921 | .write_init_super = write_init_super_imsm, |
1922 | ||
1923 | .load_super = load_super_imsm, | |
1924 | .free_super = free_super_imsm, | |
8b353278 | 1925 | .match_metadata_desc = match_metadata_desc_imsm_volume, |
cdddbdbc DW |
1926 | |
1927 | ||
8b353278 | 1928 | .validate_geometry = validate_geometry_imsm_volume, |
cdddbdbc DW |
1929 | .major = 2001, |
1930 | .swapuuid = 0, | |
1931 | .external = 2, | |
cdddbdbc | 1932 | }; |