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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 | |
34 | ||
35 | /* Disk configuration info. */ | |
36 | #define IMSM_MAX_DEVICES 255 | |
37 | struct imsm_disk { | |
38 | __u8 serial[MAX_RAID_SERIAL_LEN];/* 0xD8 - 0xE7 ascii serial number */ | |
39 | __u32 total_blocks; /* 0xE8 - 0xEB total blocks */ | |
40 | __u32 scsi_id; /* 0xEC - 0xEF scsi ID */ | |
41 | __u32 status; /* 0xF0 - 0xF3 */ | |
42 | #define SPARE_DISK 0x01 /* Spare */ | |
43 | #define CONFIGURED_DISK 0x02 /* Member of some RaidDev */ | |
44 | #define FAILED_DISK 0x04 /* Permanent failure */ | |
45 | #define USABLE_DISK 0x08 /* Fully usable unless FAILED_DISK is set */ | |
46 | ||
47 | #define IMSM_DISK_FILLERS 5 | |
48 | __u32 filler[IMSM_DISK_FILLERS]; /* 0xF4 - 0x107 MPB_DISK_FILLERS for future expansion */ | |
49 | }; | |
50 | ||
51 | /* RAID map configuration infos. */ | |
52 | struct imsm_map { | |
53 | __u32 pba_of_lba0; /* start address of partition */ | |
54 | __u32 blocks_per_member;/* blocks per member */ | |
55 | __u32 num_data_stripes; /* number of data stripes */ | |
56 | __u16 blocks_per_strip; | |
57 | __u8 map_state; /* Normal, Uninitialized, Degraded, Failed */ | |
58 | #define IMSM_T_STATE_NORMAL 0 | |
59 | #define IMSM_T_STATE_UNINITIALIZED 1 | |
60 | #define IMSM_T_STATE_DEGRADED 2 /* FIXME: is this correct? */ | |
61 | #define IMSM_T_STATE_FAILED 3 /* FIXME: is this correct? */ | |
62 | __u8 raid_level; | |
63 | #define IMSM_T_RAID0 0 | |
64 | #define IMSM_T_RAID1 1 | |
65 | #define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */ | |
66 | __u8 num_members; /* number of member disks */ | |
67 | __u8 reserved[3]; | |
68 | __u32 filler[7]; /* expansion area */ | |
69 | __u32 disk_ord_tbl[1]; /* disk_ord_tbl[num_members], | |
70 | top byte special */ | |
71 | } __attribute__ ((packed)); | |
72 | ||
73 | struct imsm_vol { | |
74 | __u32 reserved[2]; | |
75 | __u8 migr_state; /* Normal or Migrating */ | |
76 | __u8 migr_type; /* Initializing, Rebuilding, ... */ | |
77 | __u8 dirty; | |
78 | __u8 fill[1]; | |
79 | __u32 filler[5]; | |
80 | struct imsm_map map[1]; | |
81 | /* here comes another one if migr_state */ | |
82 | } __attribute__ ((packed)); | |
83 | ||
84 | struct imsm_dev { | |
85 | __u8 volume[MAX_RAID_SERIAL_LEN]; | |
86 | __u32 size_low; | |
87 | __u32 size_high; | |
88 | __u32 status; /* Persistent RaidDev status */ | |
89 | __u32 reserved_blocks; /* Reserved blocks at beginning of volume */ | |
90 | #define IMSM_DEV_FILLERS 12 | |
91 | __u32 filler[IMSM_DEV_FILLERS]; | |
92 | struct imsm_vol vol; | |
93 | } __attribute__ ((packed)); | |
94 | ||
95 | struct imsm_super { | |
96 | __u8 sig[MAX_SIGNATURE_LENGTH]; /* 0x00 - 0x1F */ | |
97 | __u32 check_sum; /* 0x20 - 0x23 MPB Checksum */ | |
98 | __u32 mpb_size; /* 0x24 - 0x27 Size of MPB */ | |
99 | __u32 family_num; /* 0x28 - 0x2B Checksum from first time this config was written */ | |
100 | __u32 generation_num; /* 0x2C - 0x2F Incremented each time this array's MPB is written */ | |
101 | __u32 reserved[2]; /* 0x30 - 0x37 */ | |
102 | __u8 num_disks; /* 0x38 Number of configured disks */ | |
103 | __u8 num_raid_devs; /* 0x39 Number of configured volumes */ | |
104 | __u8 fill[2]; /* 0x3A - 0x3B */ | |
105 | #define IMSM_FILLERS 39 | |
106 | __u32 filler[IMSM_FILLERS]; /* 0x3C - 0xD7 RAID_MPB_FILLERS */ | |
107 | struct imsm_disk disk[1]; /* 0xD8 diskTbl[numDisks] */ | |
108 | /* here comes imsm_dev[num_raid_devs] */ | |
109 | } __attribute__ ((packed)); | |
110 | ||
111 | #ifndef MDASSEMBLE | |
112 | static char *map_state_str[] = { "normal", "uninitialized", "degraded", "failed" }; | |
113 | #endif | |
114 | ||
115 | static unsigned long long mpb_sectors(struct imsm_super *mpb) | |
116 | { | |
117 | __u32 size = __le32_to_cpu(mpb->mpb_size); | |
118 | ||
119 | return ((size + (512-1)) & (~(512-1))) / 512; | |
120 | } | |
121 | ||
122 | /* internal representation of IMSM metadata */ | |
123 | struct intel_super { | |
124 | union { | |
125 | struct imsm_super *mpb; | |
126 | void *buf; | |
127 | }; | |
c2a1e7da | 128 | int updates_pending; |
cdddbdbc DW |
129 | struct dl { |
130 | struct dl *next; | |
131 | int index; | |
132 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
133 | int major, minor; | |
134 | char *devname; | |
135 | int fd; | |
136 | } *disks; | |
137 | }; | |
138 | ||
139 | static struct supertype *match_metadata_desc_imsm(char *arg) | |
140 | { | |
141 | struct supertype *st; | |
142 | ||
143 | if (strcmp(arg, "imsm") != 0 && | |
144 | strcmp(arg, "default") != 0 | |
145 | ) | |
146 | return NULL; | |
147 | ||
148 | st = malloc(sizeof(*st)); | |
149 | st->ss = &super_imsm; | |
150 | st->max_devs = IMSM_MAX_DEVICES; | |
151 | st->minor_version = 0; | |
152 | st->sb = NULL; | |
153 | return st; | |
154 | } | |
155 | ||
156 | static struct supertype *match_metadata_desc_imsm_raid(char *arg) | |
157 | { | |
158 | struct supertype *st; | |
159 | ||
160 | if (strcmp(arg, "imsm/raid") != 0 && | |
161 | strcmp(arg, "raid") != 0 && | |
162 | strcmp(arg, "default") != 0 | |
163 | ) | |
164 | return NULL; | |
165 | ||
166 | st = malloc(sizeof(*st)); | |
167 | st->ss = &super_imsm_raid; | |
168 | st->max_devs = IMSM_MAX_DEVICES; | |
169 | st->minor_version = 0; | |
170 | st->sb = NULL; | |
171 | return st; | |
172 | } | |
173 | ||
174 | static __u8 *get_imsm_version(struct imsm_super *mpb) | |
175 | { | |
176 | return &mpb->sig[MPB_SIG_LEN]; | |
177 | } | |
178 | ||
179 | static struct imsm_disk *get_imsm_disk(struct imsm_super *mpb, __u8 index) | |
180 | { | |
181 | if (index > mpb->num_disks - 1) | |
182 | return NULL; | |
183 | return &mpb->disk[index]; | |
184 | } | |
185 | ||
186 | static __u32 gen_imsm_checksum(struct imsm_super *mpb) | |
187 | { | |
188 | __u32 end = mpb->mpb_size / sizeof(end); | |
189 | __u32 *p = (__u32 *) mpb; | |
190 | __u32 sum = 0; | |
191 | ||
192 | while (end--) | |
193 | sum += __le32_to_cpu(*p++); | |
194 | ||
195 | return sum - __le32_to_cpu(mpb->check_sum); | |
196 | } | |
197 | ||
198 | static size_t sizeof_imsm_dev(struct imsm_dev *dev) | |
199 | { | |
200 | size_t size = sizeof(*dev); | |
201 | ||
202 | /* each map has disk_ord_tbl[num_members - 1] additional space */ | |
203 | size += sizeof(__u32) * (dev->vol.map[0].num_members - 1); | |
204 | ||
205 | /* migrating means an additional map */ | |
206 | if (dev->vol.migr_state) { | |
207 | size += sizeof(struct imsm_map); | |
208 | size += sizeof(__u32) * (dev->vol.map[1].num_members - 1); | |
209 | } | |
210 | ||
211 | return size; | |
212 | } | |
213 | ||
214 | static struct imsm_dev *get_imsm_dev(struct imsm_super *mpb, __u8 index) | |
215 | { | |
216 | int offset; | |
217 | int i; | |
218 | void *_mpb = mpb; | |
219 | ||
220 | if (index > mpb->num_raid_devs - 1) | |
221 | return NULL; | |
222 | ||
223 | /* devices start after all disks */ | |
224 | offset = ((void *) &mpb->disk[mpb->num_disks]) - _mpb; | |
225 | ||
226 | for (i = 0; i <= index; i++) | |
227 | if (i == index) | |
228 | return _mpb + offset; | |
229 | else | |
230 | offset += sizeof_imsm_dev(_mpb + offset); | |
231 | ||
232 | return NULL; | |
233 | } | |
234 | ||
235 | static __u32 get_imsm_disk_idx(struct imsm_map *map, int slot) | |
236 | { | |
237 | __u32 *ord_tbl = &map->disk_ord_tbl[slot]; | |
238 | ||
239 | /* top byte is 'special' */ | |
240 | return __le32_to_cpu(*ord_tbl & ~(0xff << 24)); | |
241 | } | |
242 | ||
cdddbdbc DW |
243 | static int get_imsm_raid_level(struct imsm_map *map) |
244 | { | |
245 | if (map->raid_level == 1) { | |
246 | if (map->num_members == 2) | |
247 | return 1; | |
248 | else | |
249 | return 10; | |
250 | } | |
251 | ||
252 | return map->raid_level; | |
253 | } | |
254 | ||
4f5bc454 | 255 | #ifndef MDASSEMBLE |
cdddbdbc DW |
256 | static void print_imsm_dev(struct imsm_dev *dev, int index) |
257 | { | |
258 | __u64 sz; | |
259 | int slot; | |
260 | struct imsm_map *map = dev->vol.map; | |
261 | ||
262 | printf("\n"); | |
263 | printf("[%s]:\n", dev->volume); | |
264 | printf(" RAID Level : %d\n", get_imsm_raid_level(map)); | |
265 | printf(" Members : %d\n", map->num_members); | |
266 | for (slot = 0; slot < map->num_members; slot++) | |
267 | if (index == get_imsm_disk_idx(map, slot)) | |
268 | break; | |
269 | if (slot < map->num_members) | |
270 | printf(" This Slot : %d\n", slot); | |
271 | else | |
272 | printf(" This Slot : ?\n"); | |
273 | sz = __le32_to_cpu(dev->size_high); | |
274 | sz <<= 32; | |
275 | sz += __le32_to_cpu(dev->size_low); | |
276 | printf(" Array Size : %llu%s\n", (unsigned long long)sz, | |
277 | human_size(sz * 512)); | |
278 | sz = __le32_to_cpu(map->blocks_per_member); | |
279 | printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz, | |
280 | human_size(sz * 512)); | |
281 | printf(" Sector Offset : %u\n", | |
282 | __le32_to_cpu(map->pba_of_lba0)); | |
283 | printf(" Num Stripes : %u\n", | |
284 | __le32_to_cpu(map->num_data_stripes)); | |
285 | printf(" Chunk Size : %u KiB\n", | |
286 | __le16_to_cpu(map->blocks_per_strip) / 2); | |
287 | printf(" Reserved : %d\n", __le32_to_cpu(dev->reserved_blocks)); | |
288 | printf(" Migrate State : %s\n", dev->vol.migr_state ? "migrating" : "idle"); | |
289 | printf(" Dirty State : %s\n", dev->vol.dirty ? "dirty" : "clean"); | |
290 | printf(" Map State : %s\n", map_state_str[map->map_state]); | |
291 | } | |
292 | ||
293 | static void print_imsm_disk(struct imsm_super *mpb, int index) | |
294 | { | |
295 | struct imsm_disk *disk = get_imsm_disk(mpb, index); | |
296 | char str[MAX_RAID_SERIAL_LEN]; | |
297 | __u32 s; | |
298 | __u64 sz; | |
299 | ||
300 | printf("\n"); | |
301 | snprintf(str, MAX_RAID_SERIAL_LEN, "%s", disk->serial); | |
302 | printf(" Disk%02d Serial : %s\n", index, str); | |
303 | s = __le32_to_cpu(disk->status); | |
304 | printf(" State :%s%s%s%s\n", s&SPARE_DISK ? " spare" : "", | |
305 | s&CONFIGURED_DISK ? " active" : "", | |
306 | s&FAILED_DISK ? " failed" : "", | |
307 | s&USABLE_DISK ? " usable" : ""); | |
308 | printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id)); | |
309 | sz = __le32_to_cpu(disk->total_blocks) - mpb_sectors(mpb); | |
310 | printf(" Usable Size : %llu%s\n", (unsigned long long)sz, | |
311 | human_size(sz * 512)); | |
312 | } | |
313 | ||
314 | static void examine_super_imsm(struct supertype *st, char *homehost) | |
315 | { | |
316 | struct intel_super *super = st->sb; | |
317 | struct imsm_super *mpb = super->mpb; | |
318 | char str[MAX_SIGNATURE_LENGTH]; | |
319 | int i; | |
320 | __u32 sum; | |
321 | ||
322 | snprintf(str, MPB_SIG_LEN, "%s", mpb->sig); | |
323 | printf(" Magic : %s\n", str); | |
324 | snprintf(str, strlen(MPB_VERSION_RAID0), "%s", get_imsm_version(mpb)); | |
325 | printf(" Version : %s\n", get_imsm_version(mpb)); | |
326 | printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num)); | |
327 | printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num)); | |
328 | sum = __le32_to_cpu(mpb->check_sum); | |
329 | printf(" Checksum : %08x %s\n", sum, | |
330 | gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect"); | |
331 | printf(" Disks : %d\n", mpb->num_disks); | |
332 | printf(" RAID Devices : %d\n", mpb->num_raid_devs); | |
333 | print_imsm_disk(mpb, super->disks->index); | |
334 | for (i = 0; i < mpb->num_raid_devs; i++) | |
335 | print_imsm_dev(get_imsm_dev(mpb, i), super->disks->index); | |
336 | for (i = 0; i < mpb->num_disks; i++) { | |
337 | if (i == super->disks->index) | |
338 | continue; | |
339 | print_imsm_disk(mpb, i); | |
340 | } | |
341 | } | |
342 | ||
343 | static void brief_examine_super_imsm(struct supertype *st) | |
344 | { | |
345 | struct intel_super *super = st->sb; | |
346 | struct imsm_super *mpb = super->mpb; | |
347 | ||
348 | printf("ARRAY /dev/imsm family=%08x metadata=external:imsm\n", | |
349 | __le32_to_cpu(mpb->family_num)); | |
350 | } | |
351 | ||
352 | static void detail_super_imsm(struct supertype *st, char *homehost) | |
353 | { | |
354 | printf("%s\n", __FUNCTION__); | |
355 | } | |
356 | ||
357 | static void brief_detail_super_imsm(struct supertype *st) | |
358 | { | |
359 | printf("%s\n", __FUNCTION__); | |
360 | } | |
361 | #endif | |
362 | ||
363 | static int match_home_imsm(struct supertype *st, char *homehost) | |
364 | { | |
365 | printf("%s\n", __FUNCTION__); | |
366 | ||
367 | return 0; | |
368 | } | |
369 | ||
370 | static void uuid_from_super_imsm(struct supertype *st, int uuid[4]) | |
371 | { | |
372 | printf("%s\n", __FUNCTION__); | |
373 | } | |
374 | ||
4f5bc454 DW |
375 | static void |
376 | get_imsm_numerical_version(struct imsm_super *mpb, int *m, int *p) | |
cdddbdbc | 377 | { |
cdddbdbc DW |
378 | __u8 *v = get_imsm_version(mpb); |
379 | __u8 *end = mpb->sig + MAX_SIGNATURE_LENGTH; | |
380 | char major[] = { 0, 0, 0 }; | |
381 | char minor[] = { 0 ,0, 0 }; | |
382 | char patch[] = { 0, 0, 0 }; | |
383 | char *ver_parse[] = { major, minor, patch }; | |
384 | int i, j; | |
385 | ||
386 | i = j = 0; | |
387 | while (*v != '\0' && v < end) { | |
388 | if (*v != '.' && j < 2) | |
389 | ver_parse[i][j++] = *v; | |
390 | else { | |
391 | i++; | |
392 | j = 0; | |
393 | } | |
394 | v++; | |
395 | } | |
396 | ||
4f5bc454 DW |
397 | *m = strtol(minor, NULL, 0); |
398 | *p = strtol(patch, NULL, 0); | |
399 | } | |
400 | ||
401 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info) | |
402 | { | |
403 | struct intel_super *super = st->sb; | |
404 | struct imsm_super *mpb = super->mpb; | |
405 | struct imsm_disk *disk; | |
406 | __u32 s; | |
407 | int i, j; | |
408 | ||
cdddbdbc | 409 | info->array.major_version = 2000; |
4f5bc454 DW |
410 | get_imsm_numerical_version(mpb, &info->array.minor_version, |
411 | &info->array.patch_version); | |
cdddbdbc DW |
412 | info->array.raid_disks = mpb->num_disks; |
413 | info->array.level = LEVEL_CONTAINER; | |
414 | info->array.layout = 0; | |
415 | info->array.md_minor = -1; | |
416 | info->array.ctime = __le32_to_cpu(mpb->generation_num); //?? | |
417 | info->array.utime = 0; | |
418 | info->array.chunk_size = 0; | |
419 | ||
420 | info->disk.major = 0; | |
421 | info->disk.minor = 0; | |
422 | info->disk.number = super->disks->index; | |
423 | info->disk.raid_disk = -1; | |
424 | /* is this disk a member of a raid device? */ | |
425 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
426 | struct imsm_dev *dev = get_imsm_dev(mpb, i); | |
427 | struct imsm_map *map = dev->vol.map; | |
428 | ||
429 | for (j = 0; j < map->num_members; j++) { | |
430 | __u32 index = get_imsm_disk_idx(map, j); | |
431 | ||
432 | if (index == super->disks->index) { | |
433 | info->disk.raid_disk = super->disks->index; | |
434 | break; | |
435 | } | |
436 | } | |
437 | if (info->disk.raid_disk != -1) | |
438 | break; | |
439 | } | |
440 | disk = get_imsm_disk(mpb, super->disks->index); | |
441 | s = __le32_to_cpu(disk->status); | |
442 | info->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0; | |
443 | info->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0; | |
444 | info->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0; | |
445 | info->reshape_active = 0; | |
446 | } | |
447 | ||
448 | static void getinfo_super_imsm_raid(struct supertype *st, struct mdinfo *info) | |
449 | { | |
450 | printf("%s\n", __FUNCTION__); | |
451 | } | |
452 | ||
453 | static int update_super_imsm(struct supertype *st, struct mdinfo *info, | |
454 | char *update, char *devname, int verbose, | |
455 | int uuid_set, char *homehost) | |
456 | { | |
f352c545 DW |
457 | /* FIXME */ |
458 | ||
459 | /* For 'assemble' and 'force' we need to return non-zero if any | |
460 | * change was made. For others, the return value is ignored. | |
461 | * Update options are: | |
462 | * force-one : This device looks a bit old but needs to be included, | |
463 | * update age info appropriately. | |
464 | * assemble: clear any 'faulty' flag to allow this device to | |
465 | * be assembled. | |
466 | * force-array: Array is degraded but being forced, mark it clean | |
467 | * if that will be needed to assemble it. | |
468 | * | |
469 | * newdev: not used ???? | |
470 | * grow: Array has gained a new device - this is currently for | |
471 | * linear only | |
472 | * resync: mark as dirty so a resync will happen. | |
473 | * name: update the name - preserving the homehost | |
474 | * | |
475 | * Following are not relevant for this imsm: | |
476 | * sparc2.2 : update from old dodgey metadata | |
477 | * super-minor: change the preferred_minor number | |
478 | * summaries: update redundant counters. | |
479 | * uuid: Change the uuid of the array to match watch is given | |
480 | * homehost: update the recorded homehost | |
481 | * _reshape_progress: record new reshape_progress position. | |
482 | */ | |
483 | int rv = 0; | |
484 | //struct intel_super *super = st->sb; | |
485 | //struct imsm_super *mpb = super->mpb; | |
486 | ||
487 | if (strcmp(update, "grow") == 0) { | |
488 | } | |
489 | if (strcmp(update, "resync") == 0) { | |
490 | /* dev->vol.dirty = 1; */ | |
491 | } | |
492 | ||
493 | /* IMSM has no concept of UUID or homehost */ | |
494 | ||
495 | return rv; | |
cdddbdbc DW |
496 | } |
497 | ||
498 | static __u64 avail_size_imsm(struct supertype *st, __u64 size) | |
499 | { | |
500 | printf("%s\n", __FUNCTION__); | |
501 | ||
502 | return 0; | |
503 | } | |
504 | ||
505 | static int compare_super_imsm(struct supertype *st, struct supertype *tst) | |
506 | { | |
507 | /* | |
508 | * return: | |
509 | * 0 same, or first was empty, and second was copied | |
510 | * 1 second had wrong number | |
511 | * 2 wrong uuid | |
512 | * 3 wrong other info | |
513 | */ | |
514 | struct intel_super *first = st->sb; | |
515 | struct intel_super *sec = tst->sb; | |
516 | ||
517 | if (!first) { | |
518 | st->sb = tst->sb; | |
519 | tst->sb = NULL; | |
520 | return 0; | |
521 | } | |
522 | ||
523 | if (memcmp(first->mpb->sig, sec->mpb->sig, MAX_SIGNATURE_LENGTH) != 0) | |
524 | return 3; | |
525 | if (first->mpb->family_num != sec->mpb->family_num) | |
526 | return 3; | |
527 | if (first->mpb->mpb_size != sec->mpb->mpb_size) | |
528 | return 3; | |
529 | if (first->mpb->check_sum != sec->mpb->check_sum) | |
530 | return 3; | |
531 | ||
532 | return 0; | |
533 | } | |
534 | ||
535 | extern int scsi_get_serial(int fd, void *buf, size_t buf_len); | |
536 | ||
537 | static int imsm_read_serial(int fd, char *devname, | |
538 | __u8 serial[MAX_RAID_SERIAL_LEN]) | |
539 | { | |
540 | unsigned char scsi_serial[255]; | |
541 | struct stat stb; | |
542 | int sg_fd; | |
543 | int minor; | |
544 | char sg_path[20]; | |
545 | int rv; | |
546 | int rsp_len; | |
547 | int i, cnt; | |
548 | ||
549 | memset(scsi_serial, 0, sizeof(scsi_serial)); | |
550 | fstat(fd, &stb); | |
551 | minor = minor(stb.st_rdev); | |
552 | minor /= 16; | |
553 | ||
554 | sprintf(sg_path, "/dev/sg%d", minor); | |
555 | sg_fd = open(sg_path, O_RDONLY); | |
556 | if (sg_fd < 0) { | |
557 | if (devname) | |
558 | fprintf(stderr, | |
559 | Name ": Failed to open %s for %s: %s\n", | |
560 | sg_path, devname, strerror(errno)); | |
561 | return 1; | |
562 | } | |
563 | ||
564 | rv = scsi_get_serial(sg_fd, scsi_serial, sizeof(scsi_serial)); | |
565 | close(sg_fd); | |
566 | ||
567 | if (rv != 0) { | |
568 | if (devname) | |
569 | fprintf(stderr, | |
570 | Name ": Failed to retrieve serial for %s\n", | |
571 | devname); | |
572 | return rv; | |
573 | } | |
574 | ||
575 | rsp_len = scsi_serial[3]; | |
576 | for (i = 0, cnt = 0; i < rsp_len; i++) { | |
577 | if (!isspace(scsi_serial[4 + i])) | |
578 | serial[cnt++] = scsi_serial[4 + i]; | |
579 | if (cnt == MAX_RAID_SERIAL_LEN) | |
580 | break; | |
581 | } | |
582 | ||
583 | serial[MAX_RAID_SERIAL_LEN - 1] = '\0'; | |
584 | ||
585 | return 0; | |
586 | } | |
587 | ||
588 | static int | |
589 | load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd) | |
590 | { | |
591 | struct imsm_super *mpb = super->mpb; | |
592 | struct dl *dl; | |
593 | struct stat stb; | |
594 | struct imsm_disk *disk; | |
595 | int rv; | |
596 | int i; | |
597 | ||
598 | dl = malloc(sizeof(*dl)); | |
599 | if (!dl) { | |
600 | if (devname) | |
601 | fprintf(stderr, | |
602 | Name ": failed to allocate disk buffer for %s\n", | |
603 | devname); | |
604 | return 2; | |
605 | } | |
606 | memset(dl, 0, sizeof(*dl)); | |
607 | ||
608 | fstat(fd, &stb); | |
609 | dl->major = major(stb.st_rdev); | |
610 | dl->minor = minor(stb.st_rdev); | |
611 | dl->next = super->disks; | |
612 | dl->fd = keep_fd ? fd : -1; | |
613 | dl->devname = devname ? strdup(devname) : NULL; | |
614 | dl->index = -1; | |
615 | super->disks = dl; | |
616 | rv = imsm_read_serial(fd, devname, dl->serial); | |
617 | ||
618 | if (rv != 0) | |
619 | return 2; | |
620 | ||
621 | /* look up this disk's index */ | |
622 | for (i = 0; i < mpb->num_disks; i++) { | |
623 | disk = get_imsm_disk(mpb, i); | |
624 | ||
625 | if (memcmp(disk->serial, dl->serial, MAX_RAID_SERIAL_LEN) == 0) | |
626 | break; | |
627 | } | |
628 | ||
629 | if (i > mpb->num_disks) | |
630 | return 2; | |
631 | ||
632 | dl->index = i; | |
633 | ||
634 | return 0; | |
635 | } | |
636 | ||
637 | /* load_imsm_mpb - read matrix metadata | |
638 | * allocates super->mpb to be freed by free_super | |
639 | */ | |
640 | static int load_imsm_mpb(int fd, struct intel_super *super, char *devname) | |
641 | { | |
642 | unsigned long long dsize; | |
643 | size_t len, mpb_size; | |
644 | unsigned long long sectors; | |
645 | struct stat; | |
646 | struct imsm_super anchor; | |
647 | __u32 check_sum; | |
648 | ||
649 | memset(super, 0, sizeof(*super)); | |
650 | get_dev_size(fd, NULL, &dsize); | |
651 | ||
652 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) { | |
653 | if (devname) | |
654 | fprintf(stderr, | |
655 | Name ": Cannot seek to anchor block on %s: %s\n", | |
656 | devname, strerror(errno)); | |
657 | return 1; | |
658 | } | |
659 | ||
660 | len = sizeof(anchor); | |
661 | if (read(fd, &anchor, len) != len) { | |
662 | if (devname) | |
663 | fprintf(stderr, | |
664 | Name ": Cannot read anchor block on %s: %s\n", | |
665 | devname, strerror(errno)); | |
666 | return 1; | |
667 | } | |
668 | ||
669 | if (strncmp((char *) anchor.sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) { | |
670 | if (devname) | |
671 | fprintf(stderr, | |
672 | Name ": no IMSM anchor on %s\n", devname); | |
673 | return 2; | |
674 | } | |
675 | ||
676 | mpb_size = __le32_to_cpu(anchor.mpb_size); | |
677 | super->mpb = malloc(mpb_size < 512 ? 512 : mpb_size); | |
678 | if (!super->mpb) { | |
679 | if (devname) | |
680 | fprintf(stderr, | |
681 | Name ": unable to allocate %zu byte mpb buffer\n", | |
682 | mpb_size); | |
683 | return 2; | |
684 | } | |
685 | memcpy(super->buf, &anchor, sizeof(anchor)); | |
686 | ||
687 | /* read the rest of the first block */ | |
688 | len = 512 - sizeof(anchor); | |
689 | if (read(fd, super->buf + sizeof(anchor), len) != len) { | |
690 | if (devname) | |
691 | fprintf(stderr, | |
692 | Name ": Cannot read anchor remainder on %s: %s\n", | |
693 | devname, strerror(errno)); | |
694 | return 2; | |
695 | } | |
696 | ||
697 | sectors = mpb_sectors(&anchor) - 1; | |
698 | if (!sectors) | |
699 | return load_imsm_disk(fd, super, devname, 0); | |
700 | ||
701 | /* read the extended mpb */ | |
702 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) { | |
703 | if (devname) | |
704 | fprintf(stderr, | |
705 | Name ": Cannot seek to extended mpb on %s: %s\n", | |
706 | devname, strerror(errno)); | |
707 | return 1; | |
708 | } | |
709 | ||
710 | len = mpb_size - 512; | |
711 | if (read(fd, super->buf + 512, len) != len) { | |
712 | if (devname) | |
713 | fprintf(stderr, | |
714 | Name ": Cannot read extended mpb on %s: %s\n", | |
715 | devname, strerror(errno)); | |
716 | return 2; | |
717 | } | |
718 | ||
719 | check_sum = gen_imsm_checksum(super->mpb); | |
720 | if (check_sum != __le32_to_cpu(super->mpb->check_sum)) { | |
721 | if (devname) | |
722 | fprintf(stderr, | |
723 | Name ": IMSM checksum %x != %x on %s\n", | |
724 | check_sum, __le32_to_cpu(super->mpb->check_sum), | |
725 | devname); | |
726 | return 2; | |
727 | } | |
728 | ||
729 | return load_imsm_disk(fd, super, devname, 0); | |
730 | } | |
731 | ||
732 | struct superswitch super_imsm_container; | |
733 | ||
734 | static void free_imsm_disks(struct intel_super *super) | |
735 | { | |
736 | while (super->disks) { | |
737 | struct dl *d = super->disks; | |
738 | ||
739 | super->disks = d->next; | |
740 | if (d->fd >= 0) | |
741 | close(d->fd); | |
742 | if (d->devname) | |
743 | free(d->devname); | |
744 | free(d); | |
745 | } | |
746 | } | |
747 | ||
748 | static void free_imsm(struct intel_super *super) | |
749 | { | |
750 | if (super->mpb) | |
751 | free(super->mpb); | |
752 | free_imsm_disks(super); | |
753 | free(super); | |
754 | } | |
755 | ||
756 | ||
757 | static void free_super_imsm(struct supertype *st) | |
758 | { | |
759 | struct intel_super *super = st->sb; | |
760 | ||
761 | if (!super) | |
762 | return; | |
763 | ||
764 | free_imsm(super); | |
765 | st->sb = NULL; | |
766 | } | |
767 | ||
768 | #ifndef MDASSEMBLE | |
769 | static int load_super_imsm_all(struct supertype *st, int fd, void **sbp, | |
770 | char *devname, int keep_fd) | |
771 | { | |
772 | struct mdinfo *sra; | |
773 | struct intel_super *super; | |
774 | struct mdinfo *sd, *best = NULL; | |
775 | __u32 bestgen = 0; | |
776 | __u32 gen; | |
777 | char nm[20]; | |
778 | int dfd; | |
779 | int rv; | |
780 | ||
781 | /* check if this disk is a member of an active array */ | |
782 | sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE); | |
783 | if (!sra) | |
784 | return 1; | |
785 | ||
786 | if (sra->array.major_version != -1 || | |
787 | sra->array.minor_version != -2 || | |
788 | strcmp(sra->text_version, "imsm") != 0) | |
789 | return 1; | |
790 | ||
791 | super = malloc(sizeof(*super)); | |
792 | if (!super) | |
793 | return 1; | |
794 | ||
795 | /* find the most up to date disk in this array */ | |
796 | for (sd = sra->devs; sd; sd = sd->next) { | |
797 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
798 | dfd = dev_open(nm, keep_fd ? O_RDWR : O_RDONLY); | |
799 | if (!dfd) { | |
800 | free_imsm(super); | |
801 | return 2; | |
802 | } | |
803 | rv = load_imsm_mpb(dfd, super, NULL); | |
804 | if (!keep_fd) | |
805 | close(dfd); | |
806 | if (rv == 0) { | |
807 | gen = __le32_to_cpu(super->mpb->generation_num); | |
808 | if (!best || gen > bestgen) { | |
809 | bestgen = gen; | |
810 | best = sd; | |
811 | } | |
812 | } else { | |
813 | free_imsm(super); | |
814 | return 2; | |
815 | } | |
816 | } | |
817 | ||
818 | if (!best) { | |
819 | free_imsm(super); | |
820 | return 1; | |
821 | } | |
822 | ||
823 | /* load the most up to date anchor */ | |
824 | sprintf(nm, "%d:%d", best->disk.major, best->disk.minor); | |
825 | dfd = dev_open(nm, O_RDONLY); | |
826 | if (!dfd) { | |
827 | free_imsm(super); | |
828 | return 1; | |
829 | } | |
830 | rv = load_imsm_mpb(dfd, super, NULL); | |
831 | close(dfd); | |
832 | if (rv != 0) { | |
833 | free_imsm(super); | |
834 | return 2; | |
835 | } | |
836 | ||
837 | /* reset the disk list */ | |
838 | free_imsm_disks(super); | |
839 | ||
840 | /* populate disk list */ | |
841 | for (sd = sra->devs ; sd ; sd = sd->next) { | |
842 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
843 | dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY); | |
844 | if (!dfd) { | |
845 | free_imsm(super); | |
846 | return 2; | |
847 | } | |
848 | load_imsm_disk(dfd, super, NULL, keep_fd); | |
849 | if (!keep_fd) | |
850 | close(dfd); | |
851 | } | |
852 | ||
853 | *sbp = super; | |
854 | if (st->ss == NULL) { | |
855 | st->ss = &super_imsm_container; | |
856 | st->minor_version = 0; | |
857 | st->max_devs = IMSM_MAX_DEVICES; | |
858 | } | |
859 | ||
860 | return 0; | |
861 | } | |
862 | #endif | |
863 | ||
864 | static int load_super_imsm(struct supertype *st, int fd, char *devname) | |
865 | { | |
866 | struct intel_super *super; | |
867 | int rv; | |
868 | ||
869 | #ifndef MDASSEMBLE | |
3dbccbcf | 870 | if (load_super_imsm_all(st, fd, &st->sb, devname, 1) == 0) |
cdddbdbc DW |
871 | return 0; |
872 | #endif | |
873 | ||
874 | super = malloc(sizeof(*super)); | |
875 | if (!super) { | |
876 | fprintf(stderr, | |
877 | Name ": malloc of %zu failed.\n", | |
878 | sizeof(*super)); | |
879 | return 1; | |
880 | } | |
881 | ||
882 | rv = load_imsm_mpb(fd, super, devname); | |
883 | ||
884 | if (rv) { | |
885 | if (devname) | |
886 | fprintf(stderr, | |
887 | Name ": Failed to load all information " | |
888 | "sections on %s\n", devname); | |
889 | free_imsm(super); | |
890 | return rv; | |
891 | } | |
892 | ||
893 | st->sb = super; | |
894 | if (st->ss == NULL) { | |
895 | st->ss = &super_imsm; | |
896 | st->minor_version = 0; | |
897 | st->max_devs = IMSM_MAX_DEVICES; | |
898 | } | |
899 | ||
900 | return 0; | |
901 | } | |
902 | ||
903 | static int init_zero_imsm(struct supertype *st, mdu_array_info_t *info, | |
904 | unsigned long long size, char *name, | |
905 | char *homehost, int *uuid) | |
906 | { | |
907 | printf("%s\n", __FUNCTION__); | |
908 | ||
909 | return 0; | |
910 | } | |
911 | ||
912 | static int init_super_imsm(struct supertype *st, mdu_array_info_t *info, | |
913 | unsigned long long size, char *name, | |
914 | char *homehost, int *uuid) | |
915 | { | |
916 | printf("%s\n", __FUNCTION__); | |
917 | ||
918 | return 0; | |
919 | } | |
920 | ||
921 | static int init_super_imsm_raid(struct supertype *st, mdu_array_info_t *info, | |
922 | unsigned long long size, char *name, | |
923 | char *homehost, int *uuid) | |
924 | { | |
925 | printf("%s\n", __FUNCTION__); | |
926 | ||
927 | return 0; | |
928 | } | |
929 | ||
930 | static void add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dinfo, | |
931 | int fd, char *devname) | |
932 | { | |
933 | printf("%s\n", __FUNCTION__); | |
934 | } | |
935 | ||
936 | static void add_to_super_imsm_raid(struct supertype *st, mdu_disk_info_t *dinfo, | |
937 | int fd, char *devname) | |
938 | { | |
939 | printf("%s\n", __FUNCTION__); | |
940 | } | |
941 | ||
942 | static int write_init_super_imsm(struct supertype *st) | |
943 | { | |
944 | printf("%s\n", __FUNCTION__); | |
945 | ||
946 | return 0; | |
947 | } | |
948 | ||
949 | static int store_zero_imsm(struct supertype *st, int fd) | |
950 | { | |
951 | printf("%s\n", __FUNCTION__); | |
952 | ||
953 | return 0; | |
954 | } | |
955 | ||
f352c545 | 956 | static void getinfo_super_n_imsm_container(struct supertype *st, struct mdinfo *info) |
cdddbdbc | 957 | { |
f352c545 DW |
958 | /* just need offset and size... |
959 | * of the metadata?? | |
960 | */ | |
961 | struct intel_super *super = st->sb; | |
962 | struct imsm_super *mpb = super->mpb; | |
963 | struct imsm_disk *disk = get_imsm_disk(mpb, info->disk.number); | |
964 | int sect = mpb_sectors(mpb); | |
965 | ||
966 | info->data_offset = __le32_to_cpu(disk->total_blocks) - (2 + sect - 1); | |
967 | info->component_size = sect; | |
cdddbdbc DW |
968 | } |
969 | ||
970 | static void getinfo_super_n_raid(struct supertype *st, struct mdinfo *info) | |
971 | { | |
972 | printf("%s\n", __FUNCTION__); | |
973 | } | |
974 | ||
975 | static int validate_geometry_imsm(struct supertype *st, int level, int layout, | |
976 | int raiddisks, int chunk, unsigned long long size, | |
977 | char *subdev, unsigned long long *freesize) | |
978 | { | |
979 | printf("%s\n", __FUNCTION__); | |
980 | ||
981 | return 0; | |
982 | } | |
983 | ||
984 | static int validate_geometry_imsm_container(struct supertype *st, int level, | |
985 | int layout, int raiddisks, int chunk, | |
986 | unsigned long long size, char *subdev, | |
987 | unsigned long long *freesize) | |
988 | { | |
989 | printf("%s\n", __FUNCTION__); | |
990 | ||
991 | return 0; | |
992 | } | |
993 | ||
994 | static int validate_geometry_imsm_raid(struct supertype *st, int level, | |
995 | int layout, int raiddisks, int chunk, | |
996 | unsigned long long size, char *subdev, | |
997 | unsigned long long *freesize) | |
998 | { | |
999 | printf("%s\n", __FUNCTION__); | |
1000 | ||
1001 | return 0; | |
1002 | } | |
1003 | ||
cdddbdbc DW |
1004 | static struct mdinfo *container_content_imsm(struct supertype *st) |
1005 | { | |
4f5bc454 DW |
1006 | /* Given a container loaded by load_super_imsm_all, |
1007 | * extract information about all the arrays into | |
1008 | * an mdinfo tree. | |
1009 | * | |
1010 | * For each imsm_dev create an mdinfo, fill it in, | |
1011 | * then look for matching devices in super->disks | |
1012 | * and create appropriate device mdinfo. | |
1013 | */ | |
1014 | struct intel_super *super = st->sb; | |
1015 | struct imsm_super *mpb = super->mpb; | |
1016 | struct mdinfo *rest = NULL; | |
1017 | int i; | |
cdddbdbc | 1018 | |
4f5bc454 DW |
1019 | for (i = 0; i < mpb->num_raid_devs; i++) { |
1020 | struct imsm_dev *dev = get_imsm_dev(mpb, i); | |
1021 | struct imsm_vol *vol = &dev->vol; | |
1022 | struct imsm_map *map = vol->map; | |
1023 | struct mdinfo *this; | |
1024 | __u64 sz; | |
1025 | int slot; | |
1026 | ||
1027 | this = malloc(sizeof(*this)); | |
1028 | memset(this, 0, sizeof(*this)); | |
1029 | this->next = rest; | |
1030 | rest = this; | |
1031 | ||
1032 | this->array.major_version = 2000; | |
1033 | get_imsm_numerical_version(mpb, &this->array.minor_version, | |
1034 | &this->array.patch_version); | |
1035 | this->array.level = get_imsm_raid_level(map); | |
1036 | this->array.raid_disks = map->num_members; | |
1037 | switch(this->array.level) { | |
1038 | case 0: | |
1039 | case 1: | |
1040 | this->array.layout = 0; | |
1041 | break; | |
1042 | case 5: | |
1043 | case 6: | |
1044 | this->array.layout = ALGORITHM_LEFT_SYMMETRIC; | |
1045 | break; | |
1046 | case 10: | |
1047 | this->array.layout = 0x102; //FIXME is this correct? | |
1048 | break; | |
1049 | default: | |
1050 | this->array.layout = -1; // FIXME | |
1051 | } | |
1052 | this->array.md_minor = -1; | |
1053 | this->array.ctime = 0; | |
1054 | this->array.utime = 0; | |
1055 | this->array.chunk_size = __le16_to_cpu(map->blocks_per_strip) << 9; | |
1056 | this->array.state = !vol->dirty; | |
1057 | this->container_member = i; | |
0fd5c350 DW |
1058 | if (map->map_state == IMSM_T_STATE_UNINITIALIZED || dev->vol.dirty) |
1059 | this->resync_start = 0; | |
1060 | else | |
1061 | this->resync_start = ~0ULL; | |
1062 | ||
4f5bc454 DW |
1063 | strncpy(this->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN); |
1064 | this->name[MAX_RAID_SERIAL_LEN] = 0; | |
1065 | ||
1066 | memset(this->uuid, 0, sizeof(this->uuid)); | |
1067 | ||
1068 | sz = __le32_to_cpu(dev->size_high); | |
1069 | sz <<= 32; | |
1070 | sz += __le32_to_cpu(dev->size_low); | |
1071 | this->component_size = sz; | |
1072 | this->array.size = this->component_size / 2; | |
1073 | ||
1074 | for (slot = 0 ; slot < map->num_members; slot++) { | |
1075 | struct imsm_disk *disk; | |
1076 | struct mdinfo *info_d; | |
1077 | struct dl *d; | |
1078 | int idx; | |
1079 | __u32 s; | |
1080 | ||
1081 | idx = __le32_to_cpu(map->disk_ord_tbl[slot] & ~(0xff << 24)); | |
1082 | for (d = super->disks; d ; d = d->next) | |
1083 | if (d->index == idx) | |
1084 | break; | |
1085 | ||
1086 | if (d == NULL) | |
1087 | break; /* shouldn't this be continue ?? */ | |
1088 | ||
1089 | info_d = malloc(sizeof(*info_d)); | |
1090 | if (!info_d) | |
1091 | break; /* ditto ?? */ | |
1092 | memset(info_d, 0, sizeof(*info_d)); | |
1093 | info_d->next = this->devs; | |
1094 | this->devs = info_d; | |
1095 | ||
1096 | disk = get_imsm_disk(mpb, idx); | |
1097 | s = __le32_to_cpu(disk->status); | |
1098 | ||
1099 | info_d->disk.number = d->index; | |
1100 | info_d->disk.major = d->major; | |
1101 | info_d->disk.minor = d->minor; | |
1102 | info_d->disk.raid_disk = slot; | |
1103 | info_d->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0; | |
1104 | info_d->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0; | |
1105 | info_d->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0; | |
1106 | ||
1107 | this->array.working_disks++; | |
1108 | ||
1109 | info_d->events = __le32_to_cpu(mpb->generation_num); | |
1110 | info_d->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
1111 | info_d->component_size = __le32_to_cpu(map->blocks_per_member); | |
1112 | if (d->devname) | |
1113 | strcpy(info_d->name, d->devname); | |
1114 | } | |
1115 | } | |
1116 | ||
1117 | return rest; | |
cdddbdbc DW |
1118 | } |
1119 | ||
845dea95 NB |
1120 | |
1121 | static int imsm_open_new(struct supertype *c, struct active_array *a, int inst) | |
1122 | { | |
1123 | fprintf(stderr, "imsm: open_new %d\n", inst); | |
1124 | return 0; | |
1125 | } | |
1126 | ||
1127 | static void imsm_mark_clean(struct active_array *a, unsigned long long sync_pos) | |
1128 | { | |
c2a1e7da DW |
1129 | int inst = a->info.container_member; |
1130 | struct intel_super *super = a->container->sb; | |
1131 | struct imsm_dev *dev = get_imsm_dev(super->mpb, inst); | |
1132 | ||
1133 | if (dev->vol.dirty) { | |
1134 | fprintf(stderr, "imsm: mark clean %llu\n", sync_pos); | |
1135 | dev->vol.dirty = 0; | |
1136 | super->updates_pending++; | |
1137 | } | |
845dea95 NB |
1138 | } |
1139 | ||
1140 | static void imsm_mark_dirty(struct active_array *a) | |
1141 | { | |
c2a1e7da DW |
1142 | int inst = a->info.container_member; |
1143 | struct intel_super *super = a->container->sb; | |
1144 | struct imsm_dev *dev = get_imsm_dev(super->mpb, inst); | |
1145 | ||
1146 | if (!dev->vol.dirty) { | |
1147 | fprintf(stderr, "imsm: mark dirty\n"); | |
1148 | dev->vol.dirty = 1; | |
1149 | super->updates_pending++; | |
1150 | } | |
1151 | } | |
1152 | ||
1153 | static __u8 imsm_check_degraded(struct imsm_super *mpb, int n, int failed) | |
1154 | { | |
1155 | struct imsm_dev *dev = get_imsm_dev(mpb, n); | |
1156 | struct imsm_map *map = dev->vol.map; | |
1157 | ||
1158 | if (!failed) | |
1159 | return map->map_state; | |
1160 | ||
1161 | switch (get_imsm_raid_level(map)) { | |
1162 | case 0: | |
1163 | return IMSM_T_STATE_FAILED; | |
1164 | break; | |
1165 | case 1: | |
1166 | if (failed < map->num_members) | |
1167 | return IMSM_T_STATE_DEGRADED; | |
1168 | else | |
1169 | return IMSM_T_STATE_FAILED; | |
1170 | break; | |
1171 | case 10: | |
1172 | { | |
1173 | /** | |
1174 | * check to see if any mirrors have failed, | |
1175 | * otherwise we are degraded | |
1176 | */ | |
1177 | int device_per_mirror = 2; /* FIXME is this always the case? | |
1178 | * and are they always adjacent? | |
1179 | */ | |
1180 | int failed = 0; | |
1181 | int i; | |
1182 | ||
1183 | for (i = 0; i < map->num_members; i++) { | |
1184 | int idx = get_imsm_disk_idx(map, i); | |
1185 | struct imsm_disk *disk = get_imsm_disk(mpb, idx); | |
1186 | ||
1187 | if (__le32_to_cpu(disk->status) & FAILED_DISK) | |
1188 | failed++; | |
1189 | ||
1190 | if (failed >= device_per_mirror) | |
1191 | return IMSM_T_STATE_FAILED; | |
1192 | ||
1193 | /* reset 'failed' for next mirror set */ | |
1194 | if (!((i + 1) % device_per_mirror)) | |
1195 | failed = 0; | |
1196 | } | |
1197 | ||
1198 | return IMSM_T_STATE_DEGRADED; | |
1199 | } | |
1200 | case 5: | |
1201 | if (failed < 2) | |
1202 | return IMSM_T_STATE_DEGRADED; | |
1203 | else | |
1204 | return IMSM_T_STATE_FAILED; | |
1205 | break; | |
1206 | default: | |
1207 | break; | |
1208 | } | |
1209 | ||
1210 | return map->map_state; | |
1211 | } | |
1212 | ||
1213 | static int imsm_count_failed(struct imsm_super *mpb, struct imsm_map *map) | |
1214 | { | |
1215 | int i; | |
1216 | int failed = 0; | |
1217 | struct imsm_disk *disk; | |
1218 | ||
1219 | for (i = 0; i < map->num_members; i++) { | |
1220 | int idx = get_imsm_disk_idx(map, i); | |
1221 | ||
1222 | disk = get_imsm_disk(mpb, idx); | |
1223 | if (__le32_to_cpu(disk->status) & FAILED_DISK) | |
1224 | failed++; | |
1225 | } | |
1226 | ||
1227 | return failed; | |
845dea95 NB |
1228 | } |
1229 | ||
fd7cde1b DW |
1230 | static void imsm_mark_sync(struct active_array *a, unsigned long long resync) |
1231 | { | |
c2a1e7da DW |
1232 | int inst = a->info.container_member; |
1233 | struct intel_super *super = a->container->sb; | |
1234 | struct imsm_dev *dev = get_imsm_dev(super->mpb, inst); | |
1235 | struct imsm_map *map = dev->vol.map; | |
1236 | int failed; | |
1237 | __u8 map_state; | |
1238 | ||
1239 | if (resync != ~0ULL) | |
1240 | return; | |
1241 | ||
fd7cde1b | 1242 | fprintf(stderr, "imsm: mark sync\n"); |
c2a1e7da DW |
1243 | |
1244 | failed = imsm_count_failed(super->mpb, map); | |
1245 | map_state = imsm_check_degraded(super->mpb, inst, failed); | |
1246 | if (!failed) | |
1247 | map_state = IMSM_T_STATE_NORMAL; | |
1248 | if (map->map_state != map_state) { | |
1249 | map->map_state = map_state; | |
1250 | super->updates_pending++; | |
1251 | } | |
fd7cde1b DW |
1252 | } |
1253 | ||
845dea95 NB |
1254 | static void imsm_set_disk(struct active_array *a, int n) |
1255 | { | |
1256 | fprintf(stderr, "imsm: set_disk %d\n", n); | |
1257 | } | |
1258 | ||
c2a1e7da DW |
1259 | static int store_imsm_mpb(int fd, struct intel_super *super) |
1260 | { | |
1261 | struct imsm_super *mpb = super->mpb; | |
1262 | __u32 mpb_size = __le32_to_cpu(mpb->mpb_size); | |
1263 | unsigned long long dsize; | |
1264 | unsigned long long sectors; | |
1265 | ||
1266 | get_dev_size(fd, NULL, &dsize); | |
1267 | ||
1268 | /* first block is stored on second to last sector of the disk */ | |
1269 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
1270 | return 1; | |
1271 | ||
1272 | if (write(fd, super->buf, 512) != 512) | |
1273 | return 1; | |
1274 | ||
1275 | if (mpb_size <= 512) | |
1276 | return 0; | |
1277 | ||
1278 | /* -1 because we already wrote a sector */ | |
1279 | sectors = mpb_sectors(mpb) - 1; | |
1280 | ||
1281 | /* write the extended mpb to the sectors preceeding the anchor */ | |
1282 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) | |
1283 | return 1; | |
1284 | ||
1285 | if (write(fd, super->buf + 512, mpb_size - 512) != mpb_size - 512) | |
1286 | return 1; | |
1287 | ||
1288 | fsync(fd); | |
1289 | ||
1290 | return 0; | |
1291 | } | |
1292 | ||
845dea95 NB |
1293 | static void imsm_sync_metadata(struct active_array *a) |
1294 | { | |
c2a1e7da DW |
1295 | struct intel_super *super = a->container->sb; |
1296 | struct imsm_super *mpb = super->mpb; | |
1297 | struct dl *d; | |
1298 | __u32 generation; | |
1299 | __u32 sum; | |
1300 | ||
1301 | if (!super->updates_pending) | |
1302 | return; | |
1303 | ||
845dea95 | 1304 | fprintf(stderr, "imsm: sync_metadata\n"); |
c2a1e7da DW |
1305 | |
1306 | /* 'generation' is incremented everytime the metadata is written */ | |
1307 | generation = __le32_to_cpu(mpb->generation_num); | |
1308 | generation++; | |
1309 | mpb->generation_num = __cpu_to_le32(generation); | |
1310 | ||
1311 | /* recalculate checksum */ | |
1312 | sum = gen_imsm_checksum(mpb); | |
1313 | mpb->check_sum = __cpu_to_le32(sum); | |
1314 | ||
1315 | for (d = super->disks; d ; d = d->next) | |
1316 | if (store_imsm_mpb(d->fd, super)) | |
1317 | fprintf(stderr, "%s: failed for device %d:%d %s\n", | |
1318 | __func__, d->major, d->minor, strerror(errno)); | |
1319 | ||
1320 | super->updates_pending = 0; | |
845dea95 NB |
1321 | } |
1322 | ||
cdddbdbc DW |
1323 | struct superswitch super_imsm = { |
1324 | #ifndef MDASSEMBLE | |
1325 | .examine_super = examine_super_imsm, | |
1326 | .brief_examine_super = brief_examine_super_imsm, | |
1327 | .detail_super = detail_super_imsm, | |
1328 | .brief_detail_super = brief_detail_super_imsm, | |
1329 | #endif | |
1330 | .match_home = match_home_imsm, | |
1331 | .uuid_from_super= uuid_from_super_imsm, | |
1332 | .getinfo_super = getinfo_super_imsm, | |
1333 | .update_super = update_super_imsm, | |
1334 | ||
1335 | .avail_size = avail_size_imsm, | |
1336 | ||
1337 | .compare_super = compare_super_imsm, | |
1338 | ||
1339 | .load_super = load_super_imsm, | |
1340 | .init_super = init_zero_imsm, | |
1341 | .store_super = store_zero_imsm, | |
1342 | .free_super = free_super_imsm, | |
1343 | .match_metadata_desc = match_metadata_desc_imsm, | |
f352c545 | 1344 | .getinfo_super_n = getinfo_super_n_imsm_container, |
cdddbdbc DW |
1345 | |
1346 | .validate_geometry = validate_geometry_imsm, | |
1347 | .major = 2000, | |
1348 | .swapuuid = 0, | |
1349 | .external = 1, | |
1350 | .text_version = "imsm", | |
845dea95 NB |
1351 | |
1352 | /* for mdmon */ | |
1353 | .open_new = imsm_open_new, | |
1354 | .load_super = load_super_imsm, | |
1355 | .mark_clean = imsm_mark_clean, | |
1356 | .mark_dirty = imsm_mark_dirty, | |
fd7cde1b | 1357 | .mark_sync = imsm_mark_sync, |
845dea95 NB |
1358 | .set_disk = imsm_set_disk, |
1359 | .sync_metadata = imsm_sync_metadata, | |
cdddbdbc DW |
1360 | }; |
1361 | ||
1362 | /* super_imsm_container is set by validate_geometry_imsm when given a | |
1363 | * device that is not part of any array | |
1364 | */ | |
1365 | struct superswitch super_imsm_container = { | |
1366 | ||
1367 | .validate_geometry = validate_geometry_imsm_container, | |
1368 | .init_super = init_super_imsm, | |
1369 | .add_to_super = add_to_super_imsm, | |
1370 | .write_init_super = write_init_super_imsm, | |
1371 | .getinfo_super = getinfo_super_imsm, | |
f352c545 | 1372 | .getinfo_super_n = getinfo_super_n_imsm_container, |
cdddbdbc DW |
1373 | .load_super = load_super_imsm, |
1374 | ||
1375 | #ifndef MDASSEMBLE | |
1376 | .examine_super = examine_super_imsm, | |
1377 | .brief_examine_super = brief_examine_super_imsm, | |
1378 | .detail_super = detail_super_imsm, | |
1379 | .brief_detail_super = brief_detail_super_imsm, | |
1380 | #endif | |
1381 | ||
1382 | .free_super = free_super_imsm, | |
1383 | ||
1384 | .container_content = container_content_imsm, | |
1385 | ||
1386 | .major = 2000, | |
1387 | .swapuuid = 0, | |
1388 | .external = 1, | |
1389 | .text_version = "imsm", | |
1390 | }; | |
1391 | ||
1392 | struct superswitch super_imsm_raid = { | |
1393 | .update_super = update_super_imsm, | |
1394 | .init_super = init_super_imsm_raid, | |
1395 | .add_to_super = add_to_super_imsm_raid, | |
1396 | .getinfo_super = getinfo_super_imsm_raid, | |
1397 | .getinfo_super_n = getinfo_super_n_raid, | |
1398 | .write_init_super = write_init_super_imsm, | |
1399 | ||
1400 | .load_super = load_super_imsm, | |
1401 | .free_super = free_super_imsm, | |
1402 | .match_metadata_desc = match_metadata_desc_imsm_raid, | |
1403 | ||
1404 | ||
1405 | .validate_geometry = validate_geometry_imsm_raid, | |
1406 | .major = 2001, | |
1407 | .swapuuid = 0, | |
1408 | .external = 2, | |
1409 | .text_version = "imsm", | |
1410 | }; |