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979afcb8 PS |
1 | /* |
2 | * raid6check - extended consistency check for RAID-6 | |
3 | * | |
4 | * Copyright (C) 2011 Piergiorgio Sartor | |
5 | * | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | * | |
21 | * Author: Piergiorgio Sartor | |
22 | * Based on "restripe.c" from "mdadm" codebase | |
23 | */ | |
24 | ||
25 | #include "mdadm.h" | |
26 | #include <stdint.h> | |
8d8ab389 PS |
27 | #include <signal.h> |
28 | #include <sys/mman.h> | |
979afcb8 PS |
29 | |
30 | int geo_map(int block, unsigned long long stripe, int raid_disks, | |
31 | int level, int layout); | |
32 | void qsyndrome(uint8_t *p, uint8_t *q, uint8_t **sources, int disks, int size); | |
33 | void make_tables(void); | |
f2e29ad6 RB |
34 | void ensure_zero_has_size(int chunk_size); |
35 | void raid6_datap_recov(int disks, size_t bytes, int faila, uint8_t **ptrs); | |
36 | void raid6_2data_recov(int disks, size_t bytes, int faila, int failb, | |
37 | uint8_t **ptrs); | |
38 | void xor_blocks(char *target, char **sources, int disks, int size); | |
39 | ||
979afcb8 PS |
40 | |
41 | /* Collect per stripe consistency information */ | |
42 | void raid6_collect(int chunk_size, uint8_t *p, uint8_t *q, | |
43 | char *chunkP, char *chunkQ, int *results) | |
44 | { | |
45 | int i; | |
46 | int data_id; | |
47 | uint8_t Px, Qx; | |
48 | extern uint8_t raid6_gflog[]; | |
49 | ||
50 | for(i = 0; i < chunk_size; i++) { | |
51 | Px = (uint8_t)chunkP[i] ^ (uint8_t)p[i]; | |
52 | Qx = (uint8_t)chunkQ[i] ^ (uint8_t)q[i]; | |
53 | ||
54 | if((Px != 0) && (Qx == 0)) | |
55 | results[i] = -1; | |
56 | ||
57 | if((Px == 0) && (Qx != 0)) | |
58 | results[i] = -2; | |
59 | ||
60 | if((Px != 0) && (Qx != 0)) { | |
61 | data_id = (raid6_gflog[Qx] - raid6_gflog[Px]); | |
62 | if(data_id < 0) data_id += 255; | |
63 | results[i] = data_id; | |
64 | } | |
65 | ||
66 | if((Px == 0) && (Qx == 0)) | |
67 | results[i] = -255; | |
68 | } | |
69 | } | |
70 | ||
71 | /* Try to find out if a specific disk has problems */ | |
72 | int raid6_stats(int *results, int raid_disks, int chunk_size) | |
73 | { | |
74 | int i; | |
75 | int curr_broken_disk = -255; | |
76 | int prev_broken_disk = -255; | |
77 | int broken_status = 0; | |
78 | ||
79 | for(i = 0; i < chunk_size; i++) { | |
80 | ||
81 | if(results[i] != -255) | |
82 | curr_broken_disk = results[i]; | |
83 | ||
84 | if(curr_broken_disk >= raid_disks) | |
85 | broken_status = 2; | |
86 | ||
87 | switch(broken_status) { | |
88 | case 0: | |
89 | if(curr_broken_disk != -255) { | |
90 | prev_broken_disk = curr_broken_disk; | |
91 | broken_status = 1; | |
92 | } | |
93 | break; | |
94 | ||
95 | case 1: | |
96 | if(curr_broken_disk != prev_broken_disk) | |
97 | broken_status = 2; | |
98 | break; | |
99 | ||
100 | case 2: | |
101 | default: | |
102 | curr_broken_disk = prev_broken_disk = -65535; | |
103 | break; | |
104 | } | |
105 | } | |
106 | ||
107 | return curr_broken_disk; | |
108 | } | |
109 | ||
351d7680 RB |
110 | int lock_stripe(struct mdinfo *info, unsigned long long start, |
111 | int chunk_size, int data_disks, sighandler_t *sig) { | |
112 | int rv; | |
113 | if(mlockall(MCL_CURRENT | MCL_FUTURE) != 0) { | |
114 | return 2; | |
115 | } | |
116 | ||
117 | sig[0] = signal(SIGTERM, SIG_IGN); | |
118 | sig[1] = signal(SIGINT, SIG_IGN); | |
119 | sig[2] = signal(SIGQUIT, SIG_IGN); | |
120 | ||
121 | rv = sysfs_set_num(info, NULL, "suspend_lo", start * chunk_size * data_disks); | |
122 | rv |= sysfs_set_num(info, NULL, "suspend_hi", (start + 1) * chunk_size * data_disks); | |
123 | return rv * 256; | |
124 | } | |
125 | ||
126 | int unlock_all_stripes(struct mdinfo *info, sighandler_t *sig) { | |
127 | int rv; | |
128 | rv = sysfs_set_num(info, NULL, "suspend_lo", 0x7FFFFFFFFFFFFFFFULL); | |
129 | rv |= sysfs_set_num(info, NULL, "suspend_hi", 0); | |
130 | rv |= sysfs_set_num(info, NULL, "suspend_lo", 0); | |
131 | ||
132 | signal(SIGQUIT, sig[2]); | |
133 | signal(SIGINT, sig[1]); | |
134 | signal(SIGTERM, sig[0]); | |
135 | ||
136 | if(munlockall() != 0) | |
137 | return 3; | |
138 | return rv * 256; | |
139 | } | |
140 | ||
141 | ||
8d8ab389 | 142 | int check_stripes(struct mdinfo *info, int *source, unsigned long long *offsets, |
979afcb8 | 143 | int raid_disks, int chunk_size, int level, int layout, |
f2e29ad6 RB |
144 | unsigned long long start, unsigned long long length, char *name[], |
145 | int repair, int failed_disk1, int failed_disk2) | |
979afcb8 PS |
146 | { |
147 | /* read the data and p and q blocks, and check we got them right */ | |
503975b9 N |
148 | char *stripe_buf = xmalloc(raid_disks * chunk_size); |
149 | char **stripes = xmalloc(raid_disks * sizeof(char*)); | |
150 | char **blocks = xmalloc(raid_disks * sizeof(char*)); | |
696e95a1 | 151 | int *block_index_for_slot = xmalloc(raid_disks * sizeof(int)); |
503975b9 N |
152 | uint8_t *p = xmalloc(chunk_size); |
153 | uint8_t *q = xmalloc(chunk_size); | |
154 | int *results = xmalloc(chunk_size * sizeof(int)); | |
351d7680 | 155 | sighandler_t *sig = xmalloc(3 * sizeof(sighandler_t)); |
979afcb8 PS |
156 | |
157 | int i; | |
158 | int diskP, diskQ; | |
159 | int data_disks = raid_disks - 2; | |
af3c3750 | 160 | int err = 0; |
979afcb8 PS |
161 | |
162 | extern int tables_ready; | |
163 | ||
164 | if (!tables_ready) | |
165 | make_tables(); | |
166 | ||
167 | for ( i = 0 ; i < raid_disks ; i++) | |
168 | stripes[i] = stripe_buf + i * chunk_size; | |
169 | ||
170 | while (length > 0) { | |
171 | int disk; | |
172 | ||
af3c3750 PS |
173 | printf("pos --> %llu\n", start); |
174 | ||
351d7680 RB |
175 | err = lock_stripe(info, start, chunk_size, data_disks, sig); |
176 | if(err != 0) { | |
177 | if (err != 2) | |
178 | unlock_all_stripes(info, sig); | |
8d8ab389 PS |
179 | goto exitCheck; |
180 | } | |
979afcb8 | 181 | for (i = 0 ; i < raid_disks ; i++) { |
af3c3750 | 182 | lseek64(source[i], offsets[i] + start * chunk_size, 0); |
979afcb8 PS |
183 | read(source[i], stripes[i], chunk_size); |
184 | } | |
351d7680 RB |
185 | err = unlock_all_stripes(info, sig); |
186 | if(err != 0) | |
8d8ab389 | 187 | goto exitCheck; |
8d8ab389 | 188 | |
979afcb8 | 189 | for (i = 0 ; i < data_disks ; i++) { |
af3c3750 | 190 | int disk = geo_map(i, start, raid_disks, level, layout); |
979afcb8 | 191 | blocks[i] = stripes[disk]; |
696e95a1 | 192 | block_index_for_slot[disk] = i; |
979afcb8 PS |
193 | printf("%d->%d\n", i, disk); |
194 | } | |
195 | ||
196 | qsyndrome(p, q, (uint8_t**)blocks, data_disks, chunk_size); | |
af3c3750 | 197 | diskP = geo_map(-1, start, raid_disks, level, layout); |
f2e29ad6 RB |
198 | diskQ = geo_map(-2, start, raid_disks, level, layout); |
199 | blocks[data_disks] = stripes[diskP]; | |
696e95a1 | 200 | block_index_for_slot[diskP] = data_disks; |
f2e29ad6 | 201 | blocks[data_disks+1] = stripes[diskQ]; |
696e95a1 | 202 | block_index_for_slot[diskQ] = data_disks+1; |
f2e29ad6 | 203 | |
979afcb8 | 204 | if (memcmp(p, stripes[diskP], chunk_size) != 0) { |
af3c3750 | 205 | printf("P(%d) wrong at %llu\n", diskP, start); |
979afcb8 | 206 | } |
979afcb8 | 207 | if (memcmp(q, stripes[diskQ], chunk_size) != 0) { |
af3c3750 | 208 | printf("Q(%d) wrong at %llu\n", diskQ, start); |
979afcb8 | 209 | } |
af3c3750 | 210 | raid6_collect(chunk_size, p, q, stripes[diskP], stripes[diskQ], results); |
979afcb8 PS |
211 | disk = raid6_stats(results, raid_disks, chunk_size); |
212 | ||
213 | if(disk >= -2) { | |
af3c3750 | 214 | disk = geo_map(disk, start, raid_disks, level, layout); |
979afcb8 PS |
215 | } |
216 | if(disk >= 0) { | |
af3c3750 PS |
217 | printf("Error detected at %llu: possible failed disk slot: %d --> %s\n", |
218 | start, disk, name[disk]); | |
979afcb8 PS |
219 | } |
220 | if(disk == -65535) { | |
af3c3750 | 221 | printf("Error detected at %llu: disk slot unknown\n", start); |
979afcb8 | 222 | } |
f2e29ad6 RB |
223 | if(repair == 1) { |
224 | printf("Repairing stripe %llu\n", start); | |
225 | printf("Assuming slots %d (%s) and %d (%s) are incorrect\n", | |
226 | failed_disk1, name[failed_disk1], | |
227 | failed_disk2, name[failed_disk2]); | |
228 | ||
229 | if (failed_disk1 == diskQ || failed_disk2 == diskQ) { | |
230 | char *all_but_failed_blocks[data_disks]; | |
696e95a1 | 231 | int failed_data_or_p; |
f2e29ad6 RB |
232 | int failed_block_index; |
233 | ||
234 | if (failed_disk1 == diskQ) | |
696e95a1 | 235 | failed_data_or_p = failed_disk2; |
f2e29ad6 | 236 | else |
696e95a1 RB |
237 | failed_data_or_p = failed_disk1; |
238 | printf("Repairing D/P(%d) and Q\n", failed_data_or_p); | |
239 | failed_block_index = block_index_for_slot[failed_data_or_p]; | |
f2e29ad6 RB |
240 | for (i=0; i < data_disks; i++) |
241 | if (failed_block_index == i) | |
242 | all_but_failed_blocks[i] = stripes[diskP]; | |
243 | else | |
244 | all_but_failed_blocks[i] = blocks[i]; | |
696e95a1 | 245 | xor_blocks(stripes[failed_data_or_p], |
f2e29ad6 RB |
246 | all_but_failed_blocks, data_disks, chunk_size); |
247 | qsyndrome(p, (uint8_t*)stripes[diskQ], (uint8_t**)blocks, data_disks, chunk_size); | |
248 | } else { | |
249 | ensure_zero_has_size(chunk_size); | |
250 | if (failed_disk1 == diskP || failed_disk2 == diskP) { | |
251 | int failed_data, failed_block_index; | |
252 | if (failed_disk1 == diskP) | |
253 | failed_data = failed_disk2; | |
254 | else | |
255 | failed_data = failed_disk1; | |
696e95a1 | 256 | failed_block_index = block_index_for_slot[failed_data]; |
f2e29ad6 RB |
257 | printf("Repairing D(%d) and P\n", failed_data); |
258 | raid6_datap_recov(raid_disks, chunk_size, failed_block_index, (uint8_t**)blocks); | |
259 | } else { | |
260 | printf("Repairing D and D\n"); | |
696e95a1 RB |
261 | int failed_block_index1 = block_index_for_slot[failed_disk1]; |
262 | int failed_block_index2 = block_index_for_slot[failed_disk2]; | |
f2e29ad6 RB |
263 | if (failed_block_index1 > failed_block_index2) { |
264 | int t = failed_block_index1; | |
265 | failed_block_index1 = failed_block_index2; | |
266 | failed_block_index2 = t; | |
267 | } | |
268 | raid6_2data_recov(raid_disks, chunk_size, failed_block_index1, failed_block_index2, (uint8_t**)blocks); | |
269 | } | |
270 | } | |
351d7680 RB |
271 | |
272 | err = lock_stripe(info, start, chunk_size, data_disks, sig); | |
273 | if(err != 0) { | |
274 | if (err != 2) | |
275 | unlock_all_stripes(info, sig); | |
f2e29ad6 RB |
276 | goto exitCheck; |
277 | } | |
351d7680 | 278 | |
f2e29ad6 RB |
279 | lseek64(source[failed_disk1], offsets[failed_disk1] + start * chunk_size, 0); |
280 | write(source[failed_disk1], stripes[failed_disk1], chunk_size); | |
281 | lseek64(source[failed_disk2], offsets[failed_disk2] + start * chunk_size, 0); | |
282 | write(source[failed_disk2], stripes[failed_disk2], chunk_size); | |
f2e29ad6 | 283 | |
8a63c731 RB |
284 | err = unlock_all_stripes(info, sig); |
285 | if(err != 0) | |
286 | goto exitCheck; | |
287 | } else if (disk >= 0 && repair == 2) { | |
288 | printf("Auto-repairing slot %d (%s)\n", disk, name[disk]); | |
289 | if (disk == diskQ) { | |
290 | qsyndrome(p, (uint8_t*)stripes[diskQ], (uint8_t**)blocks, data_disks, chunk_size); | |
291 | } else { | |
292 | char *all_but_failed_blocks[data_disks]; | |
293 | int failed_block_index = block_index_for_slot[disk]; | |
294 | for (i=0; i < data_disks; i++) | |
295 | if (failed_block_index == i) | |
296 | all_but_failed_blocks[i] = stripes[diskP]; | |
297 | else | |
298 | all_but_failed_blocks[i] = blocks[i]; | |
299 | xor_blocks(stripes[disk], | |
300 | all_but_failed_blocks, data_disks, chunk_size); | |
301 | } | |
302 | ||
303 | err = lock_stripe(info, start, chunk_size, data_disks, sig); | |
304 | if(err != 0) { | |
305 | if (err != 2) | |
306 | unlock_all_stripes(info, sig); | |
307 | goto exitCheck; | |
308 | } | |
309 | ||
310 | lseek64(source[disk], offsets[disk] + start * chunk_size, 0); | |
311 | write(source[disk], stripes[disk], chunk_size); | |
312 | ||
351d7680 RB |
313 | err = unlock_all_stripes(info, sig); |
314 | if(err != 0) | |
f2e29ad6 | 315 | goto exitCheck; |
f2e29ad6 RB |
316 | } |
317 | ||
979afcb8 | 318 | |
af3c3750 PS |
319 | length--; |
320 | start++; | |
979afcb8 PS |
321 | } |
322 | ||
af3c3750 PS |
323 | exitCheck: |
324 | ||
979afcb8 PS |
325 | free(stripe_buf); |
326 | free(stripes); | |
327 | free(blocks); | |
328 | free(p); | |
329 | free(q); | |
330 | free(results); | |
331 | ||
af3c3750 | 332 | return err; |
979afcb8 PS |
333 | } |
334 | ||
335 | unsigned long long getnum(char *str, char **err) | |
336 | { | |
337 | char *e; | |
338 | unsigned long long rv = strtoull(str, &e, 10); | |
339 | if (e==str || *e) { | |
340 | *err = str; | |
341 | return 0; | |
342 | } | |
343 | return rv; | |
344 | } | |
345 | ||
346 | int main(int argc, char *argv[]) | |
347 | { | |
a9c2c6c6 | 348 | /* md_device start length */ |
af3c3750 PS |
349 | int *fds = NULL; |
350 | char *buf = NULL; | |
351 | char **disk_name = NULL; | |
352 | unsigned long long *offsets = NULL; | |
353 | int raid_disks = 0; | |
2cf31121 | 354 | int active_disks; |
af3c3750 PS |
355 | int chunk_size = 0; |
356 | int layout = -1; | |
979afcb8 | 357 | int level = 6; |
f2e29ad6 RB |
358 | int repair = 0; |
359 | int failed_disk1, failed_disk2; | |
979afcb8 PS |
360 | unsigned long long start, length; |
361 | int i; | |
a9c2c6c6 | 362 | int mdfd; |
8d8ab389 | 363 | struct mdinfo *info = NULL, *comp = NULL; |
979afcb8 | 364 | char *err = NULL; |
af3c3750 PS |
365 | int exit_err = 0; |
366 | int close_flag = 0; | |
367 | char *prg = strrchr(argv[0], '/'); | |
368 | ||
369 | if (prg == NULL) | |
370 | prg = argv[0]; | |
371 | else | |
372 | prg++; | |
373 | ||
374 | if (argc < 4) { | |
8a63c731 | 375 | fprintf(stderr, "Usage: %s md_device start_stripe length_stripes [autorepair]\n", prg); |
f2e29ad6 | 376 | fprintf(stderr, " or: %s md_device repair stripe failed_slot_1 failed_slot_2\n", prg); |
af3c3750 PS |
377 | exit_err = 1; |
378 | goto exitHere; | |
979afcb8 PS |
379 | } |
380 | ||
a9c2c6c6 PS |
381 | mdfd = open(argv[1], O_RDONLY); |
382 | if(mdfd < 0) { | |
383 | perror(argv[1]); | |
e7b84f9d | 384 | fprintf(stderr, "%s: cannot open %s\n", prg, argv[1]); |
af3c3750 PS |
385 | exit_err = 2; |
386 | goto exitHere; | |
a9c2c6c6 PS |
387 | } |
388 | ||
389 | info = sysfs_read(mdfd, -1, | |
390 | GET_LEVEL| | |
391 | GET_LAYOUT| | |
392 | GET_DISKS| | |
2cf31121 | 393 | GET_DEGRADED | |
a9c2c6c6 PS |
394 | GET_COMPONENT| |
395 | GET_CHUNK| | |
396 | GET_DEVS| | |
397 | GET_OFFSET| | |
398 | GET_SIZE); | |
399 | ||
8d8ab389 PS |
400 | if(info == NULL) { |
401 | fprintf(stderr, "%s: Error reading sysfs information of %s\n", prg, argv[1]); | |
402 | exit_err = 9; | |
403 | goto exitHere; | |
404 | } | |
405 | ||
a9c2c6c6 PS |
406 | if(info->array.level != level) { |
407 | fprintf(stderr, "%s: %s not a RAID-6\n", prg, argv[1]); | |
af3c3750 PS |
408 | exit_err = 3; |
409 | goto exitHere; | |
a9c2c6c6 PS |
410 | } |
411 | ||
2cf31121 PS |
412 | if(info->array.failed_disks > 0) { |
413 | fprintf(stderr, "%s: %s degraded array\n", prg, argv[1]); | |
414 | exit_err = 8; | |
415 | goto exitHere; | |
416 | } | |
417 | ||
a9c2c6c6 PS |
418 | printf("layout: %d\n", info->array.layout); |
419 | printf("disks: %d\n", info->array.raid_disks); | |
af3c3750 PS |
420 | printf("component size: %llu\n", info->component_size * 512); |
421 | printf("total stripes: %llu\n", (info->component_size * 512) / info->array.chunk_size); | |
a9c2c6c6 PS |
422 | printf("chunk size: %d\n", info->array.chunk_size); |
423 | printf("\n"); | |
424 | ||
425 | comp = info->devs; | |
2cf31121 | 426 | for(i = 0, active_disks = 0; active_disks < info->array.raid_disks; i++) { |
a9c2c6c6 | 427 | printf("disk: %d - offset: %llu - size: %llu - name: %s - slot: %d\n", |
af3c3750 | 428 | i, comp->data_offset * 512, comp->component_size * 512, |
a9c2c6c6 PS |
429 | map_dev(comp->disk.major, comp->disk.minor, 0), |
430 | comp->disk.raid_disk); | |
2cf31121 PS |
431 | if(comp->disk.raid_disk >= 0) |
432 | active_disks++; | |
a9c2c6c6 PS |
433 | comp = comp->next; |
434 | } | |
435 | printf("\n"); | |
436 | ||
437 | close(mdfd); | |
438 | ||
439 | raid_disks = info->array.raid_disks; | |
440 | chunk_size = info->array.chunk_size; | |
441 | layout = info->array.layout; | |
f2e29ad6 RB |
442 | if (strcmp(argv[2], "repair")==0) { |
443 | if (argc < 6) { | |
444 | fprintf(stderr, "For repair mode, call %s md_device repair stripe failed_slot_1 failed_slot_2\n", prg); | |
445 | exit_err = 1; | |
446 | goto exitHere; | |
447 | } | |
448 | repair = 1; | |
449 | start = getnum(argv[3], &err); | |
450 | length = 1; | |
451 | failed_disk1 = getnum(argv[4], &err); | |
452 | failed_disk2 = getnum(argv[5], &err); | |
453 | ||
b67e45b8 | 454 | if(failed_disk1 >= info->array.raid_disks) { |
f2e29ad6 RB |
455 | fprintf(stderr, "%s: failed_slot_1 index is higher than number of devices in raid\n", prg); |
456 | exit_err = 4; | |
457 | goto exitHere; | |
458 | } | |
b67e45b8 | 459 | if(failed_disk2 >= info->array.raid_disks) { |
f2e29ad6 RB |
460 | fprintf(stderr, "%s: failed_slot_2 index is higher than number of devices in raid\n", prg); |
461 | exit_err = 4; | |
462 | goto exitHere; | |
463 | } | |
464 | if(failed_disk1 == failed_disk2) { | |
465 | fprintf(stderr, "%s: failed_slot_1 and failed_slot_2 are the same\n", prg); | |
466 | exit_err = 4; | |
467 | goto exitHere; | |
468 | } | |
469 | } | |
470 | else { | |
471 | start = getnum(argv[2], &err); | |
472 | length = getnum(argv[3], &err); | |
8a63c731 RB |
473 | if (argc >= 5 && strcmp(argv[4], "autorepair")==0) |
474 | repair = 2; | |
f2e29ad6 | 475 | } |
a9c2c6c6 | 476 | |
979afcb8 | 477 | if (err) { |
a9c2c6c6 | 478 | fprintf(stderr, "%s: Bad number: %s\n", prg, err); |
af3c3750 PS |
479 | exit_err = 4; |
480 | goto exitHere; | |
979afcb8 | 481 | } |
a9c2c6c6 | 482 | |
af3c3750 PS |
483 | if(start > ((info->component_size * 512) / chunk_size)) { |
484 | start = (info->component_size * 512) / chunk_size; | |
485 | fprintf(stderr, "%s: start beyond disks size\n", prg); | |
486 | } | |
a9c2c6c6 | 487 | |
af3c3750 PS |
488 | if((length == 0) || |
489 | ((length + start) > ((info->component_size * 512) / chunk_size))) { | |
490 | length = (info->component_size * 512) / chunk_size - start; | |
979afcb8 | 491 | } |
a9c2c6c6 | 492 | |
503975b9 N |
493 | disk_name = xmalloc(raid_disks * sizeof(*disk_name)); |
494 | fds = xmalloc(raid_disks * sizeof(*fds)); | |
495 | offsets = xcalloc(raid_disks, sizeof(*offsets)); | |
496 | buf = xmalloc(raid_disks * chunk_size); | |
af3c3750 | 497 | |
af3c3750 PS |
498 | for(i=0; i<raid_disks; i++) { |
499 | fds[i] = -1; | |
500 | } | |
501 | close_flag = 1; | |
979afcb8 | 502 | |
a9c2c6c6 | 503 | comp = info->devs; |
2cf31121 | 504 | for (i=0, active_disks=0; active_disks<raid_disks; i++) { |
a9c2c6c6 | 505 | int disk_slot = comp->disk.raid_disk; |
2cf31121 PS |
506 | if(disk_slot >= 0) { |
507 | disk_name[disk_slot] = map_dev(comp->disk.major, comp->disk.minor, 0); | |
508 | offsets[disk_slot] = comp->data_offset * 512; | |
509 | fds[disk_slot] = open(disk_name[disk_slot], O_RDWR); | |
510 | if (fds[disk_slot] < 0) { | |
511 | perror(disk_name[disk_slot]); | |
512 | fprintf(stderr,"%s: cannot open %s\n", prg, disk_name[disk_slot]); | |
513 | exit_err = 6; | |
514 | goto exitHere; | |
515 | } | |
516 | active_disks++; | |
979afcb8 | 517 | } |
a9c2c6c6 | 518 | comp = comp->next; |
979afcb8 PS |
519 | } |
520 | ||
8d8ab389 | 521 | int rv = check_stripes(info, fds, offsets, |
979afcb8 | 522 | raid_disks, chunk_size, level, layout, |
f2e29ad6 | 523 | start, length, disk_name, repair, failed_disk1, failed_disk2); |
979afcb8 PS |
524 | if (rv != 0) { |
525 | fprintf(stderr, | |
a9c2c6c6 | 526 | "%s: check_stripes returned %d\n", prg, rv); |
af3c3750 PS |
527 | exit_err = 7; |
528 | goto exitHere; | |
979afcb8 PS |
529 | } |
530 | ||
af3c3750 PS |
531 | exitHere: |
532 | ||
533 | if (close_flag) | |
534 | for(i = 0; i < raid_disks; i++) | |
535 | close(fds[i]); | |
536 | ||
a9c2c6c6 | 537 | free(disk_name); |
979afcb8 PS |
538 | free(fds); |
539 | free(offsets); | |
540 | free(buf); | |
541 | ||
af3c3750 | 542 | exit(exit_err); |
979afcb8 | 543 | } |