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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 */ | |
604b746f JD |
103 | __u32 error_log_size; /* 0x30 - 0x33 in bytes */ |
104 | __u32 attributes; /* 0x34 - 0x37 */ | |
cdddbdbc DW |
105 | __u8 num_disks; /* 0x38 Number of configured disks */ |
106 | __u8 num_raid_devs; /* 0x39 Number of configured volumes */ | |
604b746f JD |
107 | __u8 error_log_pos; /* 0x3A */ |
108 | __u8 fill[1]; /* 0x3B */ | |
109 | __u32 cache_size; /* 0x3c - 0x40 in mb */ | |
110 | __u32 orig_family_num; /* 0x40 - 0x43 original family num */ | |
111 | __u32 pwr_cycle_count; /* 0x44 - 0x47 simulated power cycle count for array */ | |
112 | __u32 bbm_log_size; /* 0x48 - 0x4B - size of bad Block Mgmt Log in bytes */ | |
113 | #define IMSM_FILLERS 35 | |
114 | __u32 filler[IMSM_FILLERS]; /* 0x4C - 0xD7 RAID_MPB_FILLERS */ | |
cdddbdbc DW |
115 | struct imsm_disk disk[1]; /* 0xD8 diskTbl[numDisks] */ |
116 | /* here comes imsm_dev[num_raid_devs] */ | |
604b746f | 117 | /* here comes BBM logs */ |
cdddbdbc DW |
118 | } __attribute__ ((packed)); |
119 | ||
604b746f JD |
120 | #define BBM_LOG_MAX_ENTRIES 254 |
121 | ||
122 | struct bbm_log_entry { | |
123 | __u64 defective_block_start; | |
124 | #define UNREADABLE 0xFFFFFFFF | |
125 | __u32 spare_block_offset; | |
126 | __u16 remapped_marked_count; | |
127 | __u16 disk_ordinal; | |
128 | } __attribute__ ((__packed__)); | |
129 | ||
130 | struct bbm_log { | |
131 | __u32 signature; /* 0xABADB10C */ | |
132 | __u32 entry_count; | |
133 | __u32 reserved_spare_block_count; /* 0 */ | |
134 | __u32 reserved; /* 0xFFFF */ | |
135 | __u64 first_spare_lba; | |
136 | struct bbm_log_entry mapped_block_entries[BBM_LOG_MAX_ENTRIES]; | |
137 | } __attribute__ ((__packed__)); | |
138 | ||
139 | ||
cdddbdbc DW |
140 | #ifndef MDASSEMBLE |
141 | static char *map_state_str[] = { "normal", "uninitialized", "degraded", "failed" }; | |
142 | #endif | |
143 | ||
87eb16df | 144 | static unsigned int sector_count(__u32 bytes) |
cdddbdbc | 145 | { |
87eb16df DW |
146 | return ((bytes + (512-1)) & (~(512-1))) / 512; |
147 | } | |
cdddbdbc | 148 | |
87eb16df DW |
149 | static unsigned int mpb_sectors(struct imsm_super *mpb) |
150 | { | |
151 | return sector_count(__le32_to_cpu(mpb->mpb_size)); | |
cdddbdbc DW |
152 | } |
153 | ||
154 | /* internal representation of IMSM metadata */ | |
155 | struct intel_super { | |
156 | union { | |
949c47a0 DW |
157 | void *buf; /* O_DIRECT buffer for reading/writing metadata */ |
158 | struct imsm_super *anchor; /* immovable parameters */ | |
cdddbdbc | 159 | }; |
949c47a0 | 160 | size_t len; /* size of the 'buf' allocation */ |
c2c087e6 DW |
161 | int updates_pending; /* count of pending updates for mdmon */ |
162 | int creating_imsm; /* flag to indicate container creation */ | |
bf5a934a | 163 | int current_vol; /* index of raid device undergoing creation */ |
949c47a0 DW |
164 | #define IMSM_MAX_RAID_DEVS 2 |
165 | struct imsm_dev *dev_tbl[IMSM_MAX_RAID_DEVS]; | |
cdddbdbc DW |
166 | struct dl { |
167 | struct dl *next; | |
168 | int index; | |
169 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
170 | int major, minor; | |
171 | char *devname; | |
b9f594fe | 172 | struct imsm_disk disk; |
cdddbdbc DW |
173 | int fd; |
174 | } *disks; | |
604b746f | 175 | struct bbm_log *bbm_log; |
cdddbdbc DW |
176 | }; |
177 | ||
c2c087e6 DW |
178 | struct extent { |
179 | unsigned long long start, size; | |
180 | }; | |
181 | ||
88758e9d DW |
182 | /* definition of messages passed to imsm_process_update */ |
183 | enum imsm_update_type { | |
184 | update_activate_spare, | |
8273f55e | 185 | update_create_array, |
88758e9d DW |
186 | }; |
187 | ||
188 | struct imsm_update_activate_spare { | |
189 | enum imsm_update_type type; | |
d23fe947 | 190 | struct dl *dl; |
88758e9d DW |
191 | int slot; |
192 | int array; | |
193 | struct imsm_update_activate_spare *next; | |
194 | }; | |
195 | ||
8273f55e DW |
196 | struct imsm_update_create_array { |
197 | enum imsm_update_type type; | |
198 | struct imsm_dev dev; | |
199 | int dev_idx; | |
200 | }; | |
201 | ||
0030e8d6 DW |
202 | static int imsm_env_devname_as_serial(void) |
203 | { | |
204 | char *val = getenv("IMSM_DEVNAME_AS_SERIAL"); | |
205 | ||
206 | if (val && atoi(val) == 1) | |
207 | return 1; | |
208 | ||
209 | return 0; | |
210 | } | |
211 | ||
212 | ||
cdddbdbc DW |
213 | static struct supertype *match_metadata_desc_imsm(char *arg) |
214 | { | |
215 | struct supertype *st; | |
216 | ||
217 | if (strcmp(arg, "imsm") != 0 && | |
218 | strcmp(arg, "default") != 0 | |
219 | ) | |
220 | return NULL; | |
221 | ||
222 | st = malloc(sizeof(*st)); | |
ef609477 | 223 | memset(st, 0, sizeof(*st)); |
cdddbdbc DW |
224 | st->ss = &super_imsm; |
225 | st->max_devs = IMSM_MAX_DEVICES; | |
226 | st->minor_version = 0; | |
227 | st->sb = NULL; | |
228 | return st; | |
229 | } | |
230 | ||
cdddbdbc DW |
231 | static __u8 *get_imsm_version(struct imsm_super *mpb) |
232 | { | |
233 | return &mpb->sig[MPB_SIG_LEN]; | |
234 | } | |
235 | ||
949c47a0 DW |
236 | /* retrieve a disk directly from the anchor when the anchor is known to be |
237 | * up-to-date, currently only at load time | |
238 | */ | |
239 | static struct imsm_disk *__get_imsm_disk(struct imsm_super *mpb, __u8 index) | |
cdddbdbc | 240 | { |
949c47a0 | 241 | if (index >= mpb->num_disks) |
cdddbdbc DW |
242 | return NULL; |
243 | return &mpb->disk[index]; | |
244 | } | |
245 | ||
b9f594fe | 246 | /* retrieve a disk from the parsed metadata */ |
949c47a0 DW |
247 | static struct imsm_disk *get_imsm_disk(struct intel_super *super, __u8 index) |
248 | { | |
b9f594fe DW |
249 | struct dl *d; |
250 | ||
251 | for (d = super->disks; d; d = d->next) | |
252 | if (d->index == index) | |
253 | return &d->disk; | |
254 | ||
255 | return NULL; | |
949c47a0 DW |
256 | } |
257 | ||
258 | /* generate a checksum directly from the anchor when the anchor is known to be | |
259 | * up-to-date, currently only at load or write_super after coalescing | |
260 | */ | |
261 | static __u32 __gen_imsm_checksum(struct imsm_super *mpb) | |
cdddbdbc DW |
262 | { |
263 | __u32 end = mpb->mpb_size / sizeof(end); | |
264 | __u32 *p = (__u32 *) mpb; | |
265 | __u32 sum = 0; | |
266 | ||
267 | while (end--) | |
268 | sum += __le32_to_cpu(*p++); | |
269 | ||
270 | return sum - __le32_to_cpu(mpb->check_sum); | |
271 | } | |
272 | ||
273 | static size_t sizeof_imsm_dev(struct imsm_dev *dev) | |
274 | { | |
275 | size_t size = sizeof(*dev); | |
276 | ||
277 | /* each map has disk_ord_tbl[num_members - 1] additional space */ | |
278 | size += sizeof(__u32) * (dev->vol.map[0].num_members - 1); | |
279 | ||
280 | /* migrating means an additional map */ | |
281 | if (dev->vol.migr_state) { | |
282 | size += sizeof(struct imsm_map); | |
283 | size += sizeof(__u32) * (dev->vol.map[1].num_members - 1); | |
284 | } | |
285 | ||
286 | return size; | |
287 | } | |
288 | ||
949c47a0 | 289 | static struct imsm_dev *__get_imsm_dev(struct imsm_super *mpb, __u8 index) |
cdddbdbc DW |
290 | { |
291 | int offset; | |
292 | int i; | |
293 | void *_mpb = mpb; | |
294 | ||
949c47a0 | 295 | if (index >= mpb->num_raid_devs) |
cdddbdbc DW |
296 | return NULL; |
297 | ||
298 | /* devices start after all disks */ | |
299 | offset = ((void *) &mpb->disk[mpb->num_disks]) - _mpb; | |
300 | ||
301 | for (i = 0; i <= index; i++) | |
302 | if (i == index) | |
303 | return _mpb + offset; | |
304 | else | |
305 | offset += sizeof_imsm_dev(_mpb + offset); | |
306 | ||
307 | return NULL; | |
308 | } | |
309 | ||
949c47a0 DW |
310 | static struct imsm_dev *get_imsm_dev(struct intel_super *super, __u8 index) |
311 | { | |
312 | if (index >= super->anchor->num_raid_devs) | |
313 | return NULL; | |
314 | return super->dev_tbl[index]; | |
315 | } | |
316 | ||
cdddbdbc DW |
317 | static __u32 get_imsm_disk_idx(struct imsm_map *map, int slot) |
318 | { | |
319 | __u32 *ord_tbl = &map->disk_ord_tbl[slot]; | |
320 | ||
321 | /* top byte is 'special' */ | |
322 | return __le32_to_cpu(*ord_tbl & ~(0xff << 24)); | |
323 | } | |
324 | ||
cdddbdbc DW |
325 | static int get_imsm_raid_level(struct imsm_map *map) |
326 | { | |
327 | if (map->raid_level == 1) { | |
328 | if (map->num_members == 2) | |
329 | return 1; | |
330 | else | |
331 | return 10; | |
332 | } | |
333 | ||
334 | return map->raid_level; | |
335 | } | |
336 | ||
c2c087e6 DW |
337 | static int cmp_extent(const void *av, const void *bv) |
338 | { | |
339 | const struct extent *a = av; | |
340 | const struct extent *b = bv; | |
341 | if (a->start < b->start) | |
342 | return -1; | |
343 | if (a->start > b->start) | |
344 | return 1; | |
345 | return 0; | |
346 | } | |
347 | ||
348 | static struct extent *get_extents(struct intel_super *super, struct dl *dl) | |
349 | { | |
350 | /* find a list of used extents on the given physical device */ | |
c2c087e6 DW |
351 | struct extent *rv, *e; |
352 | int i, j; | |
353 | int memberships = 0; | |
354 | ||
949c47a0 DW |
355 | for (i = 0; i < super->anchor->num_raid_devs; i++) { |
356 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
c2c087e6 DW |
357 | struct imsm_map *map = dev->vol.map; |
358 | ||
359 | for (j = 0; j < map->num_members; j++) { | |
360 | __u32 index = get_imsm_disk_idx(map, j); | |
361 | ||
362 | if (index == dl->index) | |
363 | memberships++; | |
364 | } | |
365 | } | |
366 | rv = malloc(sizeof(struct extent) * (memberships + 1)); | |
367 | if (!rv) | |
368 | return NULL; | |
369 | e = rv; | |
370 | ||
949c47a0 DW |
371 | for (i = 0; i < super->anchor->num_raid_devs; i++) { |
372 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
c2c087e6 DW |
373 | struct imsm_map *map = dev->vol.map; |
374 | ||
375 | for (j = 0; j < map->num_members; j++) { | |
376 | __u32 index = get_imsm_disk_idx(map, j); | |
377 | ||
378 | if (index == dl->index) { | |
379 | e->start = __le32_to_cpu(map->pba_of_lba0); | |
380 | e->size = __le32_to_cpu(map->blocks_per_member); | |
381 | e++; | |
382 | } | |
383 | } | |
384 | } | |
385 | qsort(rv, memberships, sizeof(*rv), cmp_extent); | |
386 | ||
b9f594fe | 387 | e->start = __le32_to_cpu(dl->disk.total_blocks) - |
c2c087e6 DW |
388 | (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); |
389 | e->size = 0; | |
390 | return rv; | |
391 | } | |
392 | ||
4f5bc454 | 393 | #ifndef MDASSEMBLE |
cdddbdbc DW |
394 | static void print_imsm_dev(struct imsm_dev *dev, int index) |
395 | { | |
396 | __u64 sz; | |
397 | int slot; | |
398 | struct imsm_map *map = dev->vol.map; | |
399 | ||
400 | printf("\n"); | |
401 | printf("[%s]:\n", dev->volume); | |
402 | printf(" RAID Level : %d\n", get_imsm_raid_level(map)); | |
403 | printf(" Members : %d\n", map->num_members); | |
404 | for (slot = 0; slot < map->num_members; slot++) | |
405 | if (index == get_imsm_disk_idx(map, slot)) | |
406 | break; | |
407 | if (slot < map->num_members) | |
408 | printf(" This Slot : %d\n", slot); | |
409 | else | |
410 | printf(" This Slot : ?\n"); | |
411 | sz = __le32_to_cpu(dev->size_high); | |
412 | sz <<= 32; | |
413 | sz += __le32_to_cpu(dev->size_low); | |
414 | printf(" Array Size : %llu%s\n", (unsigned long long)sz, | |
415 | human_size(sz * 512)); | |
416 | sz = __le32_to_cpu(map->blocks_per_member); | |
417 | printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz, | |
418 | human_size(sz * 512)); | |
419 | printf(" Sector Offset : %u\n", | |
420 | __le32_to_cpu(map->pba_of_lba0)); | |
421 | printf(" Num Stripes : %u\n", | |
422 | __le32_to_cpu(map->num_data_stripes)); | |
423 | printf(" Chunk Size : %u KiB\n", | |
424 | __le16_to_cpu(map->blocks_per_strip) / 2); | |
425 | printf(" Reserved : %d\n", __le32_to_cpu(dev->reserved_blocks)); | |
426 | printf(" Migrate State : %s\n", dev->vol.migr_state ? "migrating" : "idle"); | |
427 | printf(" Dirty State : %s\n", dev->vol.dirty ? "dirty" : "clean"); | |
428 | printf(" Map State : %s\n", map_state_str[map->map_state]); | |
429 | } | |
430 | ||
431 | static void print_imsm_disk(struct imsm_super *mpb, int index) | |
432 | { | |
949c47a0 | 433 | struct imsm_disk *disk = __get_imsm_disk(mpb, index); |
cdddbdbc DW |
434 | char str[MAX_RAID_SERIAL_LEN]; |
435 | __u32 s; | |
436 | __u64 sz; | |
437 | ||
e9d82038 DW |
438 | if (index < 0) |
439 | return; | |
440 | ||
cdddbdbc DW |
441 | printf("\n"); |
442 | snprintf(str, MAX_RAID_SERIAL_LEN, "%s", disk->serial); | |
443 | printf(" Disk%02d Serial : %s\n", index, str); | |
444 | s = __le32_to_cpu(disk->status); | |
445 | printf(" State :%s%s%s%s\n", s&SPARE_DISK ? " spare" : "", | |
446 | s&CONFIGURED_DISK ? " active" : "", | |
447 | s&FAILED_DISK ? " failed" : "", | |
448 | s&USABLE_DISK ? " usable" : ""); | |
449 | printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id)); | |
c2c087e6 DW |
450 | sz = __le32_to_cpu(disk->total_blocks) - |
451 | (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS * mpb->num_raid_devs); | |
cdddbdbc DW |
452 | printf(" Usable Size : %llu%s\n", (unsigned long long)sz, |
453 | human_size(sz * 512)); | |
454 | } | |
455 | ||
456 | static void examine_super_imsm(struct supertype *st, char *homehost) | |
457 | { | |
458 | struct intel_super *super = st->sb; | |
949c47a0 | 459 | struct imsm_super *mpb = super->anchor; |
cdddbdbc DW |
460 | char str[MAX_SIGNATURE_LENGTH]; |
461 | int i; | |
462 | __u32 sum; | |
463 | ||
464 | snprintf(str, MPB_SIG_LEN, "%s", mpb->sig); | |
465 | printf(" Magic : %s\n", str); | |
466 | snprintf(str, strlen(MPB_VERSION_RAID0), "%s", get_imsm_version(mpb)); | |
467 | printf(" Version : %s\n", get_imsm_version(mpb)); | |
468 | printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num)); | |
469 | printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num)); | |
470 | sum = __le32_to_cpu(mpb->check_sum); | |
471 | printf(" Checksum : %08x %s\n", sum, | |
949c47a0 | 472 | __gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect"); |
87eb16df | 473 | printf(" MPB Sectors : %d\n", mpb_sectors(mpb)); |
cdddbdbc DW |
474 | printf(" Disks : %d\n", mpb->num_disks); |
475 | printf(" RAID Devices : %d\n", mpb->num_raid_devs); | |
476 | print_imsm_disk(mpb, super->disks->index); | |
604b746f JD |
477 | if (super->bbm_log) { |
478 | struct bbm_log *log = super->bbm_log; | |
479 | ||
480 | printf("\n"); | |
481 | printf("Bad Block Management Log:\n"); | |
482 | printf(" Log Size : %d\n", __le32_to_cpu(mpb->bbm_log_size)); | |
483 | printf(" Signature : %x\n", __le32_to_cpu(log->signature)); | |
484 | printf(" Entry Count : %d\n", __le32_to_cpu(log->entry_count)); | |
485 | printf(" Spare Blocks : %d\n", __le32_to_cpu(log->reserved_spare_block_count)); | |
486 | printf(" First Spare : %llx\n", __le64_to_cpu(log->first_spare_lba)); | |
487 | } | |
cdddbdbc | 488 | for (i = 0; i < mpb->num_raid_devs; i++) |
949c47a0 | 489 | print_imsm_dev(__get_imsm_dev(mpb, i), super->disks->index); |
cdddbdbc DW |
490 | for (i = 0; i < mpb->num_disks; i++) { |
491 | if (i == super->disks->index) | |
492 | continue; | |
493 | print_imsm_disk(mpb, i); | |
494 | } | |
495 | } | |
496 | ||
497 | static void brief_examine_super_imsm(struct supertype *st) | |
498 | { | |
499 | struct intel_super *super = st->sb; | |
cdddbdbc DW |
500 | |
501 | printf("ARRAY /dev/imsm family=%08x metadata=external:imsm\n", | |
949c47a0 | 502 | __le32_to_cpu(super->anchor->family_num)); |
cdddbdbc DW |
503 | } |
504 | ||
505 | static void detail_super_imsm(struct supertype *st, char *homehost) | |
506 | { | |
507 | printf("%s\n", __FUNCTION__); | |
508 | } | |
509 | ||
510 | static void brief_detail_super_imsm(struct supertype *st) | |
511 | { | |
512 | printf("%s\n", __FUNCTION__); | |
513 | } | |
514 | #endif | |
515 | ||
516 | static int match_home_imsm(struct supertype *st, char *homehost) | |
517 | { | |
518 | printf("%s\n", __FUNCTION__); | |
519 | ||
520 | return 0; | |
521 | } | |
522 | ||
523 | static void uuid_from_super_imsm(struct supertype *st, int uuid[4]) | |
524 | { | |
525 | printf("%s\n", __FUNCTION__); | |
526 | } | |
527 | ||
0d481d37 | 528 | #if 0 |
4f5bc454 DW |
529 | static void |
530 | get_imsm_numerical_version(struct imsm_super *mpb, int *m, int *p) | |
cdddbdbc | 531 | { |
cdddbdbc DW |
532 | __u8 *v = get_imsm_version(mpb); |
533 | __u8 *end = mpb->sig + MAX_SIGNATURE_LENGTH; | |
534 | char major[] = { 0, 0, 0 }; | |
535 | char minor[] = { 0 ,0, 0 }; | |
536 | char patch[] = { 0, 0, 0 }; | |
537 | char *ver_parse[] = { major, minor, patch }; | |
538 | int i, j; | |
539 | ||
540 | i = j = 0; | |
541 | while (*v != '\0' && v < end) { | |
542 | if (*v != '.' && j < 2) | |
543 | ver_parse[i][j++] = *v; | |
544 | else { | |
545 | i++; | |
546 | j = 0; | |
547 | } | |
548 | v++; | |
549 | } | |
550 | ||
4f5bc454 DW |
551 | *m = strtol(minor, NULL, 0); |
552 | *p = strtol(patch, NULL, 0); | |
553 | } | |
0d481d37 | 554 | #endif |
4f5bc454 | 555 | |
c2c087e6 DW |
556 | static int imsm_level_to_layout(int level) |
557 | { | |
558 | switch (level) { | |
559 | case 0: | |
560 | case 1: | |
561 | return 0; | |
562 | case 5: | |
563 | case 6: | |
a380c027 | 564 | return ALGORITHM_LEFT_ASYMMETRIC; |
c2c087e6 DW |
565 | case 10: |
566 | return 0x102; //FIXME is this correct? | |
567 | } | |
568 | return -1; | |
569 | } | |
570 | ||
bf5a934a DW |
571 | static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info) |
572 | { | |
573 | struct intel_super *super = st->sb; | |
949c47a0 | 574 | struct imsm_dev *dev = get_imsm_dev(super, super->current_vol); |
bf5a934a DW |
575 | struct imsm_map *map = &dev->vol.map[0]; |
576 | ||
577 | info->container_member = super->current_vol; | |
578 | info->array.raid_disks = map->num_members; | |
579 | info->array.level = get_imsm_raid_level(map); | |
580 | info->array.layout = imsm_level_to_layout(info->array.level); | |
581 | info->array.md_minor = -1; | |
582 | info->array.ctime = 0; | |
583 | info->array.utime = 0; | |
584 | info->array.chunk_size = __le16_to_cpu(map->blocks_per_strip * 512); | |
585 | ||
586 | info->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
587 | info->component_size = __le32_to_cpu(map->blocks_per_member); | |
588 | ||
589 | info->disk.major = 0; | |
590 | info->disk.minor = 0; | |
591 | ||
592 | sprintf(info->text_version, "/%s/%d", | |
593 | devnum2devname(st->container_dev), | |
594 | info->container_member); | |
595 | } | |
596 | ||
597 | ||
4f5bc454 DW |
598 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info) |
599 | { | |
600 | struct intel_super *super = st->sb; | |
4f5bc454 DW |
601 | struct imsm_disk *disk; |
602 | __u32 s; | |
4f5bc454 | 603 | |
bf5a934a DW |
604 | if (super->current_vol >= 0) { |
605 | getinfo_super_imsm_volume(st, info); | |
606 | return; | |
607 | } | |
d23fe947 DW |
608 | |
609 | /* Set raid_disks to zero so that Assemble will always pull in valid | |
610 | * spares | |
611 | */ | |
612 | info->array.raid_disks = 0; | |
cdddbdbc DW |
613 | info->array.level = LEVEL_CONTAINER; |
614 | info->array.layout = 0; | |
615 | info->array.md_minor = -1; | |
c2c087e6 | 616 | info->array.ctime = 0; /* N/A for imsm */ |
cdddbdbc DW |
617 | info->array.utime = 0; |
618 | info->array.chunk_size = 0; | |
619 | ||
620 | info->disk.major = 0; | |
621 | info->disk.minor = 0; | |
cdddbdbc | 622 | info->disk.raid_disk = -1; |
c2c087e6 DW |
623 | info->reshape_active = 0; |
624 | strcpy(info->text_version, "imsm"); | |
625 | info->disk.number = -1; | |
626 | info->disk.state = 0; | |
627 | ||
4a04ec6c | 628 | if (super->disks) { |
b9f594fe | 629 | disk = &super->disks->disk; |
4a04ec6c DW |
630 | info->disk.number = super->disks->index; |
631 | info->disk.raid_disk = super->disks->index; | |
bf5a934a DW |
632 | info->data_offset = __le32_to_cpu(disk->total_blocks) - |
633 | (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
634 | info->component_size = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
4a04ec6c DW |
635 | s = __le32_to_cpu(disk->status); |
636 | info->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0; | |
637 | info->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0; | |
638 | info->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0; | |
cdddbdbc | 639 | } |
cdddbdbc DW |
640 | } |
641 | ||
cdddbdbc DW |
642 | static int update_super_imsm(struct supertype *st, struct mdinfo *info, |
643 | char *update, char *devname, int verbose, | |
644 | int uuid_set, char *homehost) | |
645 | { | |
f352c545 DW |
646 | /* FIXME */ |
647 | ||
648 | /* For 'assemble' and 'force' we need to return non-zero if any | |
649 | * change was made. For others, the return value is ignored. | |
650 | * Update options are: | |
651 | * force-one : This device looks a bit old but needs to be included, | |
652 | * update age info appropriately. | |
653 | * assemble: clear any 'faulty' flag to allow this device to | |
654 | * be assembled. | |
655 | * force-array: Array is degraded but being forced, mark it clean | |
656 | * if that will be needed to assemble it. | |
657 | * | |
658 | * newdev: not used ???? | |
659 | * grow: Array has gained a new device - this is currently for | |
660 | * linear only | |
661 | * resync: mark as dirty so a resync will happen. | |
662 | * name: update the name - preserving the homehost | |
663 | * | |
664 | * Following are not relevant for this imsm: | |
665 | * sparc2.2 : update from old dodgey metadata | |
666 | * super-minor: change the preferred_minor number | |
667 | * summaries: update redundant counters. | |
668 | * uuid: Change the uuid of the array to match watch is given | |
669 | * homehost: update the recorded homehost | |
670 | * _reshape_progress: record new reshape_progress position. | |
671 | */ | |
672 | int rv = 0; | |
673 | //struct intel_super *super = st->sb; | |
674 | //struct imsm_super *mpb = super->mpb; | |
675 | ||
676 | if (strcmp(update, "grow") == 0) { | |
677 | } | |
678 | if (strcmp(update, "resync") == 0) { | |
679 | /* dev->vol.dirty = 1; */ | |
680 | } | |
681 | ||
682 | /* IMSM has no concept of UUID or homehost */ | |
683 | ||
684 | return rv; | |
cdddbdbc DW |
685 | } |
686 | ||
c2c087e6 | 687 | static size_t disks_to_mpb_size(int disks) |
cdddbdbc | 688 | { |
c2c087e6 | 689 | size_t size; |
cdddbdbc | 690 | |
c2c087e6 DW |
691 | size = sizeof(struct imsm_super); |
692 | size += (disks - 1) * sizeof(struct imsm_disk); | |
693 | size += 2 * sizeof(struct imsm_dev); | |
694 | /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */ | |
695 | size += (4 - 2) * sizeof(struct imsm_map); | |
696 | /* 4 possible disk_ord_tbl's */ | |
697 | size += 4 * (disks - 1) * sizeof(__u32); | |
698 | ||
699 | return size; | |
700 | } | |
701 | ||
702 | static __u64 avail_size_imsm(struct supertype *st, __u64 devsize) | |
703 | { | |
704 | if (devsize < (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS)) | |
705 | return 0; | |
706 | ||
707 | return devsize - (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
cdddbdbc DW |
708 | } |
709 | ||
710 | static int compare_super_imsm(struct supertype *st, struct supertype *tst) | |
711 | { | |
712 | /* | |
713 | * return: | |
714 | * 0 same, or first was empty, and second was copied | |
715 | * 1 second had wrong number | |
716 | * 2 wrong uuid | |
717 | * 3 wrong other info | |
718 | */ | |
719 | struct intel_super *first = st->sb; | |
720 | struct intel_super *sec = tst->sb; | |
721 | ||
722 | if (!first) { | |
723 | st->sb = tst->sb; | |
724 | tst->sb = NULL; | |
725 | return 0; | |
726 | } | |
727 | ||
949c47a0 | 728 | if (memcmp(first->anchor->sig, sec->anchor->sig, MAX_SIGNATURE_LENGTH) != 0) |
cdddbdbc | 729 | return 3; |
d23fe947 DW |
730 | |
731 | /* if an anchor does not have num_raid_devs set then it is a free | |
732 | * floating spare | |
733 | */ | |
734 | if (first->anchor->num_raid_devs > 0 && | |
735 | sec->anchor->num_raid_devs > 0) { | |
736 | if (first->anchor->family_num != sec->anchor->family_num) | |
737 | return 3; | |
738 | if (first->anchor->mpb_size != sec->anchor->mpb_size) | |
739 | return 3; | |
740 | if (first->anchor->check_sum != sec->anchor->check_sum) | |
741 | return 3; | |
742 | } | |
cdddbdbc DW |
743 | |
744 | return 0; | |
745 | } | |
746 | ||
0030e8d6 DW |
747 | static void fd2devname(int fd, char *name) |
748 | { | |
749 | struct stat st; | |
750 | char path[256]; | |
751 | char dname[100]; | |
752 | char *nm; | |
753 | int rv; | |
754 | ||
755 | name[0] = '\0'; | |
756 | if (fstat(fd, &st) != 0) | |
757 | return; | |
758 | sprintf(path, "/sys/dev/block/%d:%d", | |
759 | major(st.st_rdev), minor(st.st_rdev)); | |
760 | ||
761 | rv = readlink(path, dname, sizeof(dname)); | |
762 | if (rv <= 0) | |
763 | return; | |
764 | ||
765 | dname[rv] = '\0'; | |
766 | nm = strrchr(dname, '/'); | |
767 | nm++; | |
768 | snprintf(name, MAX_RAID_SERIAL_LEN, "/dev/%s", nm); | |
769 | } | |
770 | ||
771 | ||
cdddbdbc DW |
772 | extern int scsi_get_serial(int fd, void *buf, size_t buf_len); |
773 | ||
774 | static int imsm_read_serial(int fd, char *devname, | |
775 | __u8 serial[MAX_RAID_SERIAL_LEN]) | |
776 | { | |
777 | unsigned char scsi_serial[255]; | |
cdddbdbc DW |
778 | int rv; |
779 | int rsp_len; | |
780 | int i, cnt; | |
781 | ||
782 | memset(scsi_serial, 0, sizeof(scsi_serial)); | |
cdddbdbc | 783 | |
0030e8d6 DW |
784 | if (imsm_env_devname_as_serial()) { |
785 | char name[MAX_RAID_SERIAL_LEN]; | |
786 | ||
787 | fd2devname(fd, name); | |
788 | strcpy((char *) serial, name); | |
789 | return 0; | |
790 | } | |
791 | ||
755c99fa | 792 | rv = scsi_get_serial(fd, scsi_serial, sizeof(scsi_serial)); |
cdddbdbc DW |
793 | |
794 | if (rv != 0) { | |
795 | if (devname) | |
796 | fprintf(stderr, | |
797 | Name ": Failed to retrieve serial for %s\n", | |
798 | devname); | |
799 | return rv; | |
800 | } | |
801 | ||
802 | rsp_len = scsi_serial[3]; | |
803 | for (i = 0, cnt = 0; i < rsp_len; i++) { | |
804 | if (!isspace(scsi_serial[4 + i])) | |
805 | serial[cnt++] = scsi_serial[4 + i]; | |
806 | if (cnt == MAX_RAID_SERIAL_LEN) | |
807 | break; | |
808 | } | |
809 | ||
810 | serial[MAX_RAID_SERIAL_LEN - 1] = '\0'; | |
811 | ||
812 | return 0; | |
813 | } | |
814 | ||
815 | static int | |
816 | load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd) | |
817 | { | |
cdddbdbc DW |
818 | struct dl *dl; |
819 | struct stat stb; | |
cdddbdbc DW |
820 | int rv; |
821 | int i; | |
d23fe947 DW |
822 | int alloc = 1; |
823 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
824 | ||
825 | rv = imsm_read_serial(fd, devname, serial); | |
826 | ||
827 | if (rv != 0) | |
828 | return 2; | |
829 | ||
830 | /* check if this is a disk we have seen before. it may be a spare in | |
831 | * super->disks while the current anchor believes it is a raid member, | |
832 | * check if we need to update dl->index | |
833 | */ | |
834 | for (dl = super->disks; dl; dl = dl->next) | |
835 | if (memcmp(dl->serial, serial, MAX_RAID_SERIAL_LEN) == 0) | |
836 | break; | |
837 | ||
838 | if (!dl) | |
839 | dl = malloc(sizeof(*dl)); | |
840 | else | |
841 | alloc = 0; | |
cdddbdbc | 842 | |
b9f594fe | 843 | if (!dl) { |
cdddbdbc DW |
844 | if (devname) |
845 | fprintf(stderr, | |
846 | Name ": failed to allocate disk buffer for %s\n", | |
847 | devname); | |
848 | return 2; | |
849 | } | |
cdddbdbc | 850 | |
d23fe947 DW |
851 | if (alloc) { |
852 | fstat(fd, &stb); | |
853 | dl->major = major(stb.st_rdev); | |
854 | dl->minor = minor(stb.st_rdev); | |
855 | dl->next = super->disks; | |
856 | dl->fd = keep_fd ? fd : -1; | |
857 | dl->devname = devname ? strdup(devname) : NULL; | |
858 | strncpy((char *) dl->serial, (char *) serial, MAX_RAID_SERIAL_LEN); | |
859 | } else if (keep_fd) { | |
860 | close(dl->fd); | |
861 | dl->fd = fd; | |
862 | } | |
cdddbdbc | 863 | |
d23fe947 | 864 | /* look up this disk's index in the current anchor */ |
949c47a0 DW |
865 | for (i = 0; i < super->anchor->num_disks; i++) { |
866 | struct imsm_disk *disk_iter; | |
867 | ||
868 | disk_iter = __get_imsm_disk(super->anchor, i); | |
cdddbdbc | 869 | |
949c47a0 DW |
870 | if (memcmp(disk_iter->serial, dl->serial, |
871 | MAX_RAID_SERIAL_LEN) == 0) { | |
d23fe947 DW |
872 | __u32 status; |
873 | ||
b9f594fe | 874 | dl->disk = *disk_iter; |
d23fe947 DW |
875 | status = __le32_to_cpu(dl->disk.status); |
876 | /* only set index on disks that are a member of a | |
877 | * populated contianer, i.e. one with raid_devs | |
878 | */ | |
879 | if (status & SPARE_DISK) | |
880 | dl->index = -1; | |
881 | else | |
882 | dl->index = i; | |
cdddbdbc | 883 | break; |
949c47a0 | 884 | } |
cdddbdbc DW |
885 | } |
886 | ||
d23fe947 | 887 | if (i == super->anchor->num_disks && alloc) { |
e9d82038 DW |
888 | if (devname) |
889 | fprintf(stderr, | |
d23fe947 | 890 | Name ": failed to load disk with serial \'%s\' for %s\n", |
e9d82038 | 891 | dl->serial, devname); |
d23fe947 DW |
892 | free(dl); |
893 | return 1; | |
894 | } | |
895 | if (i == super->anchor->num_disks && dl->index >= 0) { | |
896 | if (devname) | |
897 | fprintf(stderr, | |
898 | Name ": confused... disk %d with serial \'%s\' " | |
899 | "is not listed in the current anchor\n", | |
900 | dl->index, dl->serial); | |
901 | return 1; | |
e9d82038 | 902 | } |
cdddbdbc | 903 | |
d23fe947 DW |
904 | if (alloc) |
905 | super->disks = dl; | |
906 | ||
949c47a0 DW |
907 | return 0; |
908 | } | |
909 | ||
910 | static void imsm_copy_dev(struct imsm_dev *dest, struct imsm_dev *src) | |
911 | { | |
912 | int i; | |
913 | ||
914 | *dest = *src; | |
915 | ||
916 | for (i = 0; i < src->vol.map[0].num_members; i++) | |
917 | dest->vol.map[0].disk_ord_tbl[i] = src->vol.map[0].disk_ord_tbl[i]; | |
918 | ||
919 | if (!src->vol.migr_state) | |
920 | return; | |
921 | ||
922 | dest->vol.map[1] = src->vol.map[1]; | |
923 | for (i = 0; i < src->vol.map[1].num_members; i++) | |
924 | dest->vol.map[1].disk_ord_tbl[i] = src->vol.map[1].disk_ord_tbl[i]; | |
925 | } | |
926 | ||
927 | static int parse_raid_devices(struct intel_super *super) | |
928 | { | |
929 | int i; | |
930 | struct imsm_dev *dev_new; | |
931 | size_t len; | |
932 | ||
933 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
934 | struct imsm_dev *dev_iter = __get_imsm_dev(super->anchor, i); | |
935 | ||
936 | len = sizeof_imsm_dev(dev_iter); | |
937 | dev_new = malloc(len); | |
938 | if (!dev_new) | |
939 | return 1; | |
940 | imsm_copy_dev(dev_new, dev_iter); | |
941 | super->dev_tbl[i] = dev_new; | |
942 | } | |
cdddbdbc DW |
943 | |
944 | return 0; | |
945 | } | |
946 | ||
604b746f JD |
947 | /* retrieve a pointer to the bbm log which starts after all raid devices */ |
948 | struct bbm_log *__get_imsm_bbm_log(struct imsm_super *mpb) | |
949 | { | |
950 | void *ptr = NULL; | |
951 | ||
952 | if (__le32_to_cpu(mpb->bbm_log_size)) { | |
953 | ptr = mpb; | |
954 | ptr += mpb->mpb_size - __le32_to_cpu(mpb->bbm_log_size); | |
955 | } | |
956 | ||
957 | return ptr; | |
958 | } | |
959 | ||
d23fe947 | 960 | static void __free_imsm(struct intel_super *super, int free_disks); |
9ca2c81c | 961 | |
cdddbdbc DW |
962 | /* load_imsm_mpb - read matrix metadata |
963 | * allocates super->mpb to be freed by free_super | |
964 | */ | |
965 | static int load_imsm_mpb(int fd, struct intel_super *super, char *devname) | |
966 | { | |
967 | unsigned long long dsize; | |
cdddbdbc DW |
968 | unsigned long long sectors; |
969 | struct stat; | |
6416d527 | 970 | struct imsm_super *anchor; |
cdddbdbc | 971 | __u32 check_sum; |
949c47a0 | 972 | int rc; |
cdddbdbc | 973 | |
cdddbdbc DW |
974 | get_dev_size(fd, NULL, &dsize); |
975 | ||
976 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) { | |
977 | if (devname) | |
978 | fprintf(stderr, | |
979 | Name ": Cannot seek to anchor block on %s: %s\n", | |
980 | devname, strerror(errno)); | |
981 | return 1; | |
982 | } | |
983 | ||
949c47a0 | 984 | if (posix_memalign((void**)&anchor, 512, 512) != 0) { |
ad97895e DW |
985 | if (devname) |
986 | fprintf(stderr, | |
987 | Name ": Failed to allocate imsm anchor buffer" | |
988 | " on %s\n", devname); | |
989 | return 1; | |
990 | } | |
949c47a0 | 991 | if (read(fd, anchor, 512) != 512) { |
cdddbdbc DW |
992 | if (devname) |
993 | fprintf(stderr, | |
994 | Name ": Cannot read anchor block on %s: %s\n", | |
995 | devname, strerror(errno)); | |
6416d527 | 996 | free(anchor); |
cdddbdbc DW |
997 | return 1; |
998 | } | |
999 | ||
6416d527 | 1000 | if (strncmp((char *) anchor->sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) { |
cdddbdbc DW |
1001 | if (devname) |
1002 | fprintf(stderr, | |
1003 | Name ": no IMSM anchor on %s\n", devname); | |
6416d527 | 1004 | free(anchor); |
cdddbdbc DW |
1005 | return 2; |
1006 | } | |
1007 | ||
d23fe947 | 1008 | __free_imsm(super, 0); |
949c47a0 DW |
1009 | super->len = __le32_to_cpu(anchor->mpb_size); |
1010 | super->len = ROUND_UP(anchor->mpb_size, 512); | |
1011 | if (posix_memalign(&super->buf, 512, super->len) != 0) { | |
cdddbdbc DW |
1012 | if (devname) |
1013 | fprintf(stderr, | |
1014 | Name ": unable to allocate %zu byte mpb buffer\n", | |
949c47a0 | 1015 | super->len); |
6416d527 | 1016 | free(anchor); |
cdddbdbc DW |
1017 | return 2; |
1018 | } | |
949c47a0 | 1019 | memcpy(super->buf, anchor, 512); |
cdddbdbc | 1020 | |
6416d527 NB |
1021 | sectors = mpb_sectors(anchor) - 1; |
1022 | free(anchor); | |
949c47a0 DW |
1023 | if (!sectors) { |
1024 | rc = load_imsm_disk(fd, super, devname, 0); | |
1025 | if (rc == 0) | |
1026 | rc = parse_raid_devices(super); | |
1027 | return rc; | |
1028 | } | |
cdddbdbc DW |
1029 | |
1030 | /* read the extended mpb */ | |
1031 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) { | |
1032 | if (devname) | |
1033 | fprintf(stderr, | |
1034 | Name ": Cannot seek to extended mpb on %s: %s\n", | |
1035 | devname, strerror(errno)); | |
1036 | return 1; | |
1037 | } | |
1038 | ||
949c47a0 | 1039 | if (read(fd, super->buf + 512, super->len - 512) != super->len - 512) { |
cdddbdbc DW |
1040 | if (devname) |
1041 | fprintf(stderr, | |
1042 | Name ": Cannot read extended mpb on %s: %s\n", | |
1043 | devname, strerror(errno)); | |
1044 | return 2; | |
1045 | } | |
1046 | ||
949c47a0 DW |
1047 | check_sum = __gen_imsm_checksum(super->anchor); |
1048 | if (check_sum != __le32_to_cpu(super->anchor->check_sum)) { | |
cdddbdbc DW |
1049 | if (devname) |
1050 | fprintf(stderr, | |
1051 | Name ": IMSM checksum %x != %x on %s\n", | |
949c47a0 | 1052 | check_sum, __le32_to_cpu(super->anchor->check_sum), |
cdddbdbc DW |
1053 | devname); |
1054 | return 2; | |
1055 | } | |
1056 | ||
604b746f JD |
1057 | /* FIXME the BBM log is disk specific so we cannot use this global |
1058 | * buffer for all disks. Ok for now since we only look at the global | |
1059 | * bbm_log_size parameter to gate assembly | |
1060 | */ | |
1061 | super->bbm_log = __get_imsm_bbm_log(super->anchor); | |
1062 | ||
949c47a0 DW |
1063 | rc = load_imsm_disk(fd, super, devname, 0); |
1064 | if (rc == 0) | |
1065 | rc = parse_raid_devices(super); | |
1066 | return rc; | |
cdddbdbc DW |
1067 | } |
1068 | ||
cdddbdbc DW |
1069 | static void free_imsm_disks(struct intel_super *super) |
1070 | { | |
1071 | while (super->disks) { | |
1072 | struct dl *d = super->disks; | |
1073 | ||
1074 | super->disks = d->next; | |
1075 | if (d->fd >= 0) | |
1076 | close(d->fd); | |
1077 | if (d->devname) | |
1078 | free(d->devname); | |
1079 | free(d); | |
1080 | } | |
1081 | } | |
1082 | ||
9ca2c81c | 1083 | /* free all the pieces hanging off of a super pointer */ |
d23fe947 | 1084 | static void __free_imsm(struct intel_super *super, int free_disks) |
cdddbdbc | 1085 | { |
949c47a0 DW |
1086 | int i; |
1087 | ||
9ca2c81c | 1088 | if (super->buf) { |
949c47a0 | 1089 | free(super->buf); |
9ca2c81c DW |
1090 | super->buf = NULL; |
1091 | } | |
d23fe947 DW |
1092 | if (free_disks) |
1093 | free_imsm_disks(super); | |
949c47a0 | 1094 | for (i = 0; i < IMSM_MAX_RAID_DEVS; i++) |
9ca2c81c | 1095 | if (super->dev_tbl[i]) { |
949c47a0 | 1096 | free(super->dev_tbl[i]); |
9ca2c81c DW |
1097 | super->dev_tbl[i] = NULL; |
1098 | } | |
cdddbdbc DW |
1099 | } |
1100 | ||
9ca2c81c DW |
1101 | static void free_imsm(struct intel_super *super) |
1102 | { | |
d23fe947 | 1103 | __free_imsm(super, 1); |
9ca2c81c DW |
1104 | free(super); |
1105 | } | |
cdddbdbc DW |
1106 | |
1107 | static void free_super_imsm(struct supertype *st) | |
1108 | { | |
1109 | struct intel_super *super = st->sb; | |
1110 | ||
1111 | if (!super) | |
1112 | return; | |
1113 | ||
1114 | free_imsm(super); | |
1115 | st->sb = NULL; | |
1116 | } | |
1117 | ||
c2c087e6 DW |
1118 | static struct intel_super *alloc_super(int creating_imsm) |
1119 | { | |
1120 | struct intel_super *super = malloc(sizeof(*super)); | |
1121 | ||
1122 | if (super) { | |
1123 | memset(super, 0, sizeof(*super)); | |
1124 | super->creating_imsm = creating_imsm; | |
bf5a934a | 1125 | super->current_vol = -1; |
c2c087e6 DW |
1126 | } |
1127 | ||
1128 | return super; | |
1129 | } | |
1130 | ||
cdddbdbc DW |
1131 | #ifndef MDASSEMBLE |
1132 | static int load_super_imsm_all(struct supertype *st, int fd, void **sbp, | |
1133 | char *devname, int keep_fd) | |
1134 | { | |
1135 | struct mdinfo *sra; | |
1136 | struct intel_super *super; | |
1137 | struct mdinfo *sd, *best = NULL; | |
1138 | __u32 bestgen = 0; | |
1139 | __u32 gen; | |
1140 | char nm[20]; | |
1141 | int dfd; | |
1142 | int rv; | |
1143 | ||
1144 | /* check if this disk is a member of an active array */ | |
1145 | sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE); | |
1146 | if (!sra) | |
1147 | return 1; | |
1148 | ||
1149 | if (sra->array.major_version != -1 || | |
1150 | sra->array.minor_version != -2 || | |
1151 | strcmp(sra->text_version, "imsm") != 0) | |
1152 | return 1; | |
1153 | ||
c2c087e6 | 1154 | super = alloc_super(0); |
cdddbdbc DW |
1155 | if (!super) |
1156 | return 1; | |
1157 | ||
d23fe947 | 1158 | /* find the most up to date disk in this array, skipping spares */ |
cdddbdbc DW |
1159 | for (sd = sra->devs; sd; sd = sd->next) { |
1160 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
1161 | dfd = dev_open(nm, keep_fd ? O_RDWR : O_RDONLY); | |
1162 | if (!dfd) { | |
1163 | free_imsm(super); | |
1164 | return 2; | |
1165 | } | |
1166 | rv = load_imsm_mpb(dfd, super, NULL); | |
1167 | if (!keep_fd) | |
1168 | close(dfd); | |
1169 | if (rv == 0) { | |
d23fe947 DW |
1170 | if (super->anchor->num_raid_devs == 0) |
1171 | gen = 0; | |
1172 | else | |
1173 | gen = __le32_to_cpu(super->anchor->generation_num); | |
cdddbdbc DW |
1174 | if (!best || gen > bestgen) { |
1175 | bestgen = gen; | |
1176 | best = sd; | |
1177 | } | |
1178 | } else { | |
1179 | free_imsm(super); | |
1180 | return 2; | |
1181 | } | |
1182 | } | |
1183 | ||
1184 | if (!best) { | |
1185 | free_imsm(super); | |
1186 | return 1; | |
1187 | } | |
1188 | ||
1189 | /* load the most up to date anchor */ | |
1190 | sprintf(nm, "%d:%d", best->disk.major, best->disk.minor); | |
1191 | dfd = dev_open(nm, O_RDONLY); | |
1192 | if (!dfd) { | |
1193 | free_imsm(super); | |
1194 | return 1; | |
1195 | } | |
1196 | rv = load_imsm_mpb(dfd, super, NULL); | |
1197 | close(dfd); | |
1198 | if (rv != 0) { | |
1199 | free_imsm(super); | |
1200 | return 2; | |
1201 | } | |
1202 | ||
d23fe947 | 1203 | /* re-parse the disk list with the current anchor */ |
cdddbdbc DW |
1204 | for (sd = sra->devs ; sd ; sd = sd->next) { |
1205 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
1206 | dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY); | |
1207 | if (!dfd) { | |
1208 | free_imsm(super); | |
1209 | return 2; | |
1210 | } | |
1211 | load_imsm_disk(dfd, super, NULL, keep_fd); | |
1212 | if (!keep_fd) | |
1213 | close(dfd); | |
1214 | } | |
1215 | ||
f7e7067b | 1216 | if (st->subarray[0]) { |
949c47a0 | 1217 | if (atoi(st->subarray) <= super->anchor->num_raid_devs) |
bf5a934a DW |
1218 | super->current_vol = atoi(st->subarray); |
1219 | else | |
1220 | return 1; | |
f7e7067b NB |
1221 | } |
1222 | ||
cdddbdbc DW |
1223 | *sbp = super; |
1224 | if (st->ss == NULL) { | |
bf5a934a | 1225 | st->ss = &super_imsm; |
cdddbdbc DW |
1226 | st->minor_version = 0; |
1227 | st->max_devs = IMSM_MAX_DEVICES; | |
f4d11639 | 1228 | st->container_dev = fd2devnum(fd); |
cdddbdbc DW |
1229 | } |
1230 | ||
1231 | return 0; | |
1232 | } | |
1233 | #endif | |
1234 | ||
1235 | static int load_super_imsm(struct supertype *st, int fd, char *devname) | |
1236 | { | |
1237 | struct intel_super *super; | |
1238 | int rv; | |
1239 | ||
1240 | #ifndef MDASSEMBLE | |
3dbccbcf | 1241 | if (load_super_imsm_all(st, fd, &st->sb, devname, 1) == 0) |
cdddbdbc DW |
1242 | return 0; |
1243 | #endif | |
f7e7067b NB |
1244 | if (st->subarray[0]) |
1245 | return 1; /* FIXME */ | |
cdddbdbc | 1246 | |
c2c087e6 | 1247 | super = alloc_super(0); |
cdddbdbc DW |
1248 | if (!super) { |
1249 | fprintf(stderr, | |
1250 | Name ": malloc of %zu failed.\n", | |
1251 | sizeof(*super)); | |
1252 | return 1; | |
1253 | } | |
1254 | ||
1255 | rv = load_imsm_mpb(fd, super, devname); | |
1256 | ||
1257 | if (rv) { | |
1258 | if (devname) | |
1259 | fprintf(stderr, | |
1260 | Name ": Failed to load all information " | |
1261 | "sections on %s\n", devname); | |
1262 | free_imsm(super); | |
1263 | return rv; | |
1264 | } | |
1265 | ||
1266 | st->sb = super; | |
1267 | if (st->ss == NULL) { | |
1268 | st->ss = &super_imsm; | |
1269 | st->minor_version = 0; | |
1270 | st->max_devs = IMSM_MAX_DEVICES; | |
1271 | } | |
1272 | ||
1273 | return 0; | |
1274 | } | |
1275 | ||
ef6ffade DW |
1276 | static __u16 info_to_blocks_per_strip(mdu_array_info_t *info) |
1277 | { | |
1278 | if (info->level == 1) | |
1279 | return 128; | |
1280 | return info->chunk_size >> 9; | |
1281 | } | |
1282 | ||
1283 | static __u32 info_to_num_data_stripes(mdu_array_info_t *info) | |
1284 | { | |
1285 | __u32 num_stripes; | |
1286 | ||
1287 | num_stripes = (info->size * 2) / info_to_blocks_per_strip(info); | |
1288 | if (info->level == 1) | |
1289 | num_stripes /= 2; | |
1290 | ||
1291 | return num_stripes; | |
1292 | } | |
1293 | ||
fcfd9599 DW |
1294 | static __u32 info_to_blocks_per_member(mdu_array_info_t *info) |
1295 | { | |
1296 | return (info->size * 2) & ~(info_to_blocks_per_strip(info) - 1); | |
1297 | } | |
1298 | ||
8b353278 DW |
1299 | static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info, |
1300 | unsigned long long size, char *name, | |
1301 | char *homehost, int *uuid) | |
cdddbdbc | 1302 | { |
c2c087e6 DW |
1303 | /* We are creating a volume inside a pre-existing container. |
1304 | * so st->sb is already set. | |
1305 | */ | |
1306 | struct intel_super *super = st->sb; | |
949c47a0 | 1307 | struct imsm_super *mpb = super->anchor; |
c2c087e6 DW |
1308 | struct imsm_dev *dev; |
1309 | struct imsm_vol *vol; | |
1310 | struct imsm_map *map; | |
1311 | int idx = mpb->num_raid_devs; | |
1312 | int i; | |
1313 | unsigned long long array_blocks; | |
c2c087e6 | 1314 | __u32 offset = 0; |
2c092cad | 1315 | size_t size_old, size_new; |
cdddbdbc | 1316 | |
c2c087e6 DW |
1317 | if (mpb->num_raid_devs >= 2) { |
1318 | fprintf(stderr, Name": This imsm-container already has the " | |
1319 | "maximum of 2 volumes\n"); | |
1320 | return 0; | |
1321 | } | |
1322 | ||
2c092cad DW |
1323 | /* ensure the mpb is large enough for the new data */ |
1324 | size_old = __le32_to_cpu(mpb->mpb_size); | |
1325 | size_new = disks_to_mpb_size(info->nr_disks); | |
1326 | if (size_new > size_old) { | |
1327 | void *mpb_new; | |
1328 | size_t size_round = ROUND_UP(size_new, 512); | |
1329 | ||
1330 | if (posix_memalign(&mpb_new, 512, size_round) != 0) { | |
1331 | fprintf(stderr, Name": could not allocate new mpb\n"); | |
1332 | return 0; | |
1333 | } | |
1334 | memcpy(mpb_new, mpb, size_old); | |
1335 | free(mpb); | |
1336 | mpb = mpb_new; | |
949c47a0 | 1337 | super->anchor = mpb_new; |
2c092cad DW |
1338 | mpb->mpb_size = __cpu_to_le32(size_new); |
1339 | memset(mpb_new + size_old, 0, size_round - size_old); | |
1340 | } | |
bf5a934a | 1341 | super->current_vol = idx; |
d23fe947 DW |
1342 | /* when creating the first raid device in this container set num_disks |
1343 | * to zero, i.e. delete this spare and add raid member devices in | |
1344 | * add_to_super_imsm_volume() | |
1345 | */ | |
1346 | if (super->current_vol == 0) | |
1347 | mpb->num_disks = 0; | |
bf5a934a | 1348 | sprintf(st->subarray, "%d", idx); |
949c47a0 DW |
1349 | dev = malloc(sizeof(*dev) + sizeof(__u32) * (info->raid_disks - 1)); |
1350 | if (!dev) { | |
1351 | fprintf(stderr, Name": could not allocate raid device\n"); | |
1352 | return 0; | |
1353 | } | |
c2c087e6 DW |
1354 | strncpy((char *) dev->volume, name, MAX_RAID_SERIAL_LEN); |
1355 | array_blocks = calc_array_size(info->level, info->raid_disks, | |
1356 | info->layout, info->chunk_size, | |
1357 | info->size*2); | |
1358 | dev->size_low = __cpu_to_le32((__u32) array_blocks); | |
1359 | dev->size_high = __cpu_to_le32((__u32) (array_blocks >> 32)); | |
1360 | dev->status = __cpu_to_le32(0); | |
1361 | dev->reserved_blocks = __cpu_to_le32(0); | |
1362 | vol = &dev->vol; | |
1363 | vol->migr_state = 0; | |
1364 | vol->migr_type = 0; | |
1365 | vol->dirty = 0; | |
1366 | for (i = 0; i < idx; i++) { | |
949c47a0 | 1367 | struct imsm_dev *prev = get_imsm_dev(super, i); |
c2c087e6 DW |
1368 | struct imsm_map *pmap = &prev->vol.map[0]; |
1369 | ||
1370 | offset += __le32_to_cpu(pmap->blocks_per_member); | |
1371 | offset += IMSM_RESERVED_SECTORS; | |
1372 | } | |
1373 | map = &vol->map[0]; | |
1374 | map->pba_of_lba0 = __cpu_to_le32(offset); | |
fcfd9599 | 1375 | map->blocks_per_member = __cpu_to_le32(info_to_blocks_per_member(info)); |
ef6ffade DW |
1376 | map->blocks_per_strip = __cpu_to_le16(info_to_blocks_per_strip(info)); |
1377 | map->num_data_stripes = __cpu_to_le32(info_to_num_data_stripes(info)); | |
c2c087e6 DW |
1378 | map->map_state = info->level ? IMSM_T_STATE_UNINITIALIZED : |
1379 | IMSM_T_STATE_NORMAL; | |
ef6ffade DW |
1380 | |
1381 | if (info->level == 1 && info->raid_disks > 2) { | |
1382 | fprintf(stderr, Name": imsm does not support more than 2 disks" | |
1383 | "in a raid1 volume\n"); | |
1384 | return 0; | |
1385 | } | |
c2c087e6 DW |
1386 | if (info->level == 10) |
1387 | map->raid_level = 1; | |
1388 | else | |
1389 | map->raid_level = info->level; | |
ef6ffade | 1390 | |
c2c087e6 DW |
1391 | map->num_members = info->raid_disks; |
1392 | for (i = 0; i < map->num_members; i++) { | |
1393 | /* initialized in add_to_super */ | |
1394 | map->disk_ord_tbl[i] = __cpu_to_le32(0); | |
1395 | } | |
949c47a0 DW |
1396 | mpb->num_raid_devs++; |
1397 | super->dev_tbl[super->current_vol] = dev; | |
c2c087e6 DW |
1398 | |
1399 | return 1; | |
cdddbdbc DW |
1400 | } |
1401 | ||
bf5a934a DW |
1402 | static int init_super_imsm(struct supertype *st, mdu_array_info_t *info, |
1403 | unsigned long long size, char *name, | |
1404 | char *homehost, int *uuid) | |
1405 | { | |
1406 | /* This is primarily called by Create when creating a new array. | |
1407 | * We will then get add_to_super called for each component, and then | |
1408 | * write_init_super called to write it out to each device. | |
1409 | * For IMSM, Create can create on fresh devices or on a pre-existing | |
1410 | * array. | |
1411 | * To create on a pre-existing array a different method will be called. | |
1412 | * This one is just for fresh drives. | |
1413 | */ | |
1414 | struct intel_super *super; | |
1415 | struct imsm_super *mpb; | |
1416 | size_t mpb_size; | |
1417 | ||
1418 | if (!info) { | |
1419 | st->sb = NULL; | |
1420 | return 0; | |
1421 | } | |
1422 | if (st->sb) | |
1423 | return init_super_imsm_volume(st, info, size, name, homehost, | |
1424 | uuid); | |
1425 | ||
1426 | super = alloc_super(1); | |
1427 | if (!super) | |
1428 | return 0; | |
1429 | mpb_size = disks_to_mpb_size(info->nr_disks); | |
ef649044 | 1430 | if (posix_memalign(&super->buf, 512, mpb_size) != 0) { |
bf5a934a DW |
1431 | free(super); |
1432 | return 0; | |
1433 | } | |
ef649044 | 1434 | mpb = super->buf; |
bf5a934a DW |
1435 | memset(mpb, 0, mpb_size); |
1436 | ||
1437 | memcpy(mpb->sig, MPB_SIGNATURE, strlen(MPB_SIGNATURE)); | |
1438 | memcpy(mpb->sig + strlen(MPB_SIGNATURE), MPB_VERSION_RAID5, | |
1439 | strlen(MPB_VERSION_RAID5)); | |
1440 | mpb->mpb_size = mpb_size; | |
1441 | ||
bf5a934a DW |
1442 | st->sb = super; |
1443 | return 1; | |
1444 | } | |
1445 | ||
1446 | static void add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk, | |
1447 | int fd, char *devname) | |
1448 | { | |
1449 | struct intel_super *super = st->sb; | |
d23fe947 | 1450 | struct imsm_super *mpb = super->anchor; |
bf5a934a DW |
1451 | struct dl *dl; |
1452 | struct imsm_dev *dev; | |
1453 | struct imsm_map *map; | |
bf5a934a DW |
1454 | __u32 status; |
1455 | ||
949c47a0 | 1456 | dev = get_imsm_dev(super, super->current_vol); |
bf5a934a DW |
1457 | map = &dev->vol.map[0]; |
1458 | ||
1459 | for (dl = super->disks; dl ; dl = dl->next) | |
1460 | if (dl->major == dk->major && | |
1461 | dl->minor == dk->minor) | |
1462 | break; | |
d23fe947 | 1463 | |
bf5a934a DW |
1464 | if (!dl || ! (dk->state & (1<<MD_DISK_SYNC))) |
1465 | return; | |
1466 | ||
d23fe947 DW |
1467 | /* add a pristine spare to the metadata */ |
1468 | if (dl->index < 0) { | |
1469 | dl->index = super->anchor->num_disks; | |
1470 | super->anchor->num_disks++; | |
1471 | } | |
bf5a934a | 1472 | map->disk_ord_tbl[dk->number] = __cpu_to_le32(dl->index); |
bf5a934a | 1473 | status = CONFIGURED_DISK | USABLE_DISK; |
d23fe947 DW |
1474 | dl->disk.status = __cpu_to_le32(status); |
1475 | ||
1476 | /* if we are creating the first raid device update the family number */ | |
1477 | if (super->current_vol == 0) { | |
1478 | __u32 sum; | |
1479 | struct imsm_dev *_dev = __get_imsm_dev(mpb, 0); | |
1480 | struct imsm_disk *_disk = __get_imsm_disk(mpb, dl->index); | |
1481 | ||
1482 | *_dev = *dev; | |
1483 | *_disk = dl->disk; | |
1484 | sum = __gen_imsm_checksum(mpb); | |
1485 | mpb->family_num = __cpu_to_le32(sum); | |
1486 | } | |
bf5a934a DW |
1487 | } |
1488 | ||
c2c087e6 | 1489 | static void add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk, |
cdddbdbc DW |
1490 | int fd, char *devname) |
1491 | { | |
c2c087e6 | 1492 | struct intel_super *super = st->sb; |
c2c087e6 DW |
1493 | struct dl *dd; |
1494 | unsigned long long size; | |
1495 | __u32 status, id; | |
1496 | int rv; | |
1497 | struct stat stb; | |
1498 | ||
bf5a934a DW |
1499 | if (super->current_vol >= 0) { |
1500 | add_to_super_imsm_volume(st, dk, fd, devname); | |
1501 | return; | |
1502 | } | |
1503 | ||
c2c087e6 DW |
1504 | fstat(fd, &stb); |
1505 | dd = malloc(sizeof(*dd)); | |
b9f594fe | 1506 | if (!dd) { |
c2c087e6 DW |
1507 | fprintf(stderr, |
1508 | Name ": malloc failed %s:%d.\n", __func__, __LINE__); | |
1509 | abort(); | |
1510 | } | |
1511 | memset(dd, 0, sizeof(*dd)); | |
1512 | dd->major = major(stb.st_rdev); | |
1513 | dd->minor = minor(stb.st_rdev); | |
b9f594fe | 1514 | dd->index = -1; |
c2c087e6 DW |
1515 | dd->devname = devname ? strdup(devname) : NULL; |
1516 | dd->next = super->disks; | |
1517 | dd->fd = fd; | |
1518 | rv = imsm_read_serial(fd, devname, dd->serial); | |
1519 | if (rv) { | |
1520 | fprintf(stderr, | |
0030e8d6 | 1521 | Name ": failed to retrieve scsi serial, aborting\n"); |
949c47a0 | 1522 | free(dd); |
0030e8d6 | 1523 | abort(); |
c2c087e6 DW |
1524 | } |
1525 | ||
c2c087e6 DW |
1526 | get_dev_size(fd, NULL, &size); |
1527 | size /= 512; | |
1528 | status = USABLE_DISK | SPARE_DISK; | |
b9f594fe DW |
1529 | strcpy((char *) dd->disk.serial, (char *) dd->serial); |
1530 | dd->disk.total_blocks = __cpu_to_le32(size); | |
1531 | dd->disk.status = __cpu_to_le32(status); | |
c2c087e6 | 1532 | if (sysfs_disk_to_scsi_id(fd, &id) == 0) |
b9f594fe | 1533 | dd->disk.scsi_id = __cpu_to_le32(id); |
c2c087e6 | 1534 | else |
b9f594fe | 1535 | dd->disk.scsi_id = __cpu_to_le32(0); |
c2c087e6 | 1536 | super->disks = dd; |
cdddbdbc DW |
1537 | } |
1538 | ||
c2c087e6 DW |
1539 | static int store_imsm_mpb(int fd, struct intel_super *super); |
1540 | ||
d23fe947 DW |
1541 | /* spare records have their own family number and do not have any defined raid |
1542 | * devices | |
1543 | */ | |
1544 | static int write_super_imsm_spares(struct intel_super *super, int doclose) | |
1545 | { | |
1546 | struct imsm_super mpb_save; | |
1547 | struct imsm_super *mpb = super->anchor; | |
1548 | __u32 sum; | |
1549 | struct dl *d; | |
1550 | ||
1551 | mpb_save = *mpb; | |
1552 | mpb->num_raid_devs = 0; | |
1553 | mpb->num_disks = 1; | |
1554 | mpb->mpb_size = sizeof(struct imsm_super); | |
1555 | mpb->generation_num = __cpu_to_le32(1UL); | |
1556 | ||
1557 | for (d = super->disks; d; d = d->next) { | |
1558 | if (d->index >= 0) | |
1559 | continue; | |
1560 | ||
1561 | mpb->disk[0] = d->disk; | |
1562 | sum = __gen_imsm_checksum(mpb); | |
1563 | mpb->family_num = __cpu_to_le32(sum); | |
1564 | sum = __gen_imsm_checksum(mpb); | |
1565 | mpb->check_sum = __cpu_to_le32(sum); | |
1566 | ||
1567 | if (store_imsm_mpb(d->fd, super)) { | |
1568 | fprintf(stderr, "%s: failed for device %d:%d %s\n", | |
1569 | __func__, d->major, d->minor, strerror(errno)); | |
1570 | *mpb = mpb_save; | |
1571 | return 0; | |
1572 | } | |
1573 | if (doclose) { | |
1574 | close(d->fd); | |
1575 | d->fd = -1; | |
1576 | } | |
1577 | } | |
1578 | ||
1579 | *mpb = mpb_save; | |
1580 | return 1; | |
1581 | } | |
1582 | ||
c2c087e6 | 1583 | static int write_super_imsm(struct intel_super *super, int doclose) |
cdddbdbc | 1584 | { |
949c47a0 | 1585 | struct imsm_super *mpb = super->anchor; |
c2c087e6 DW |
1586 | struct dl *d; |
1587 | __u32 generation; | |
1588 | __u32 sum; | |
d23fe947 DW |
1589 | int spares = 0; |
1590 | int raid_disks = 0; | |
949c47a0 | 1591 | int i; |
cdddbdbc | 1592 | |
c2c087e6 DW |
1593 | /* 'generation' is incremented everytime the metadata is written */ |
1594 | generation = __le32_to_cpu(mpb->generation_num); | |
1595 | generation++; | |
1596 | mpb->generation_num = __cpu_to_le32(generation); | |
1597 | ||
d23fe947 DW |
1598 | for (d = super->disks; d; d = d->next) { |
1599 | if (d->index < 0) | |
1600 | spares++; | |
1601 | else { | |
1602 | raid_disks++; | |
1603 | mpb->disk[d->index] = d->disk; | |
1604 | } | |
1605 | } | |
1606 | if (raid_disks != mpb->num_disks) { | |
1607 | fprintf(stderr, "%s: expected %d disks only found %d\n", | |
1608 | __func__, mpb->num_disks, raid_disks); | |
1609 | return 0; | |
1610 | } | |
b9f594fe | 1611 | |
949c47a0 DW |
1612 | for (i = 0; i < mpb->num_raid_devs; i++) { |
1613 | struct imsm_dev *dev = __get_imsm_dev(mpb, i); | |
1614 | ||
1615 | imsm_copy_dev(dev, super->dev_tbl[i]); | |
1616 | } | |
1617 | ||
c2c087e6 | 1618 | /* recalculate checksum */ |
949c47a0 | 1619 | sum = __gen_imsm_checksum(mpb); |
c2c087e6 DW |
1620 | mpb->check_sum = __cpu_to_le32(sum); |
1621 | ||
d23fe947 | 1622 | /* write the mpb for disks that compose raid devices */ |
c2c087e6 | 1623 | for (d = super->disks; d ; d = d->next) { |
d23fe947 DW |
1624 | if (d->index < 0) |
1625 | continue; | |
c2c087e6 DW |
1626 | if (store_imsm_mpb(d->fd, super)) { |
1627 | fprintf(stderr, "%s: failed for device %d:%d %s\n", | |
1628 | __func__, d->major, d->minor, strerror(errno)); | |
1629 | return 0; | |
1630 | } | |
1631 | if (doclose) { | |
1632 | close(d->fd); | |
1633 | d->fd = -1; | |
1634 | } | |
1635 | } | |
1636 | ||
d23fe947 DW |
1637 | if (spares) |
1638 | return write_super_imsm_spares(super, doclose); | |
1639 | ||
c2c087e6 DW |
1640 | return 1; |
1641 | } | |
1642 | ||
1643 | static int write_init_super_imsm(struct supertype *st) | |
1644 | { | |
8273f55e DW |
1645 | if (st->update_tail) { |
1646 | /* queue the recently created array as a metadata update */ | |
1647 | size_t len; | |
1648 | struct imsm_update_create_array *u; | |
1649 | struct intel_super *super = st->sb; | |
8273f55e | 1650 | struct imsm_dev *dev; |
8273f55e DW |
1651 | struct dl *d; |
1652 | ||
1653 | if (super->current_vol < 0 || | |
949c47a0 | 1654 | !(dev = get_imsm_dev(super, super->current_vol))) { |
8273f55e DW |
1655 | fprintf(stderr, "%s: could not determine sub-array\n", |
1656 | __func__); | |
1657 | return 1; | |
1658 | } | |
1659 | ||
1660 | ||
949c47a0 | 1661 | len = sizeof(*u) - sizeof(*dev) + sizeof_imsm_dev(dev); |
8273f55e DW |
1662 | u = malloc(len); |
1663 | if (!u) { | |
1664 | fprintf(stderr, "%s: failed to allocate update buffer\n", | |
1665 | __func__); | |
1666 | return 1; | |
1667 | } | |
1668 | ||
1669 | u->type = update_create_array; | |
1670 | u->dev_idx = super->current_vol; | |
949c47a0 | 1671 | imsm_copy_dev(&u->dev, dev); |
8273f55e DW |
1672 | append_metadata_update(st, u, len); |
1673 | ||
1674 | for (d = super->disks; d ; d = d->next) { | |
1675 | close(d->fd); | |
1676 | d->fd = -1; | |
1677 | } | |
1678 | ||
1679 | return 0; | |
1680 | } else | |
1681 | return write_super_imsm(st->sb, 1); | |
cdddbdbc DW |
1682 | } |
1683 | ||
1684 | static int store_zero_imsm(struct supertype *st, int fd) | |
1685 | { | |
551c80c1 | 1686 | unsigned long long dsize; |
6416d527 | 1687 | void *buf; |
551c80c1 DW |
1688 | |
1689 | get_dev_size(fd, NULL, &dsize); | |
1690 | ||
1691 | /* first block is stored on second to last sector of the disk */ | |
1692 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
1693 | return 1; | |
1694 | ||
ad97895e DW |
1695 | if (posix_memalign(&buf, 512, 512) != 0) |
1696 | return 1; | |
1697 | ||
eb7ea463 DW |
1698 | memset(buf, 0, 512); |
1699 | if (write(fd, buf, 512) != 512) | |
551c80c1 | 1700 | return 1; |
cdddbdbc DW |
1701 | return 0; |
1702 | } | |
1703 | ||
cdddbdbc DW |
1704 | static int validate_geometry_imsm_container(struct supertype *st, int level, |
1705 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 1706 | unsigned long long size, char *dev, |
2c514b71 NB |
1707 | unsigned long long *freesize, |
1708 | int verbose) | |
cdddbdbc | 1709 | { |
c2c087e6 DW |
1710 | int fd; |
1711 | unsigned long long ldsize; | |
cdddbdbc | 1712 | |
c2c087e6 DW |
1713 | if (level != LEVEL_CONTAINER) |
1714 | return 0; | |
1715 | if (!dev) | |
1716 | return 1; | |
1717 | ||
1718 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
1719 | if (fd < 0) { | |
2c514b71 NB |
1720 | if (verbose) |
1721 | fprintf(stderr, Name ": imsm: Cannot open %s: %s\n", | |
1722 | dev, strerror(errno)); | |
c2c087e6 DW |
1723 | return 0; |
1724 | } | |
1725 | if (!get_dev_size(fd, dev, &ldsize)) { | |
1726 | close(fd); | |
1727 | return 0; | |
1728 | } | |
1729 | close(fd); | |
1730 | ||
1731 | *freesize = avail_size_imsm(st, ldsize >> 9); | |
1732 | ||
1733 | return 1; | |
cdddbdbc DW |
1734 | } |
1735 | ||
c2c087e6 DW |
1736 | /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd |
1737 | * FIX ME add ahci details | |
1738 | */ | |
8b353278 DW |
1739 | static int validate_geometry_imsm_volume(struct supertype *st, int level, |
1740 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 1741 | unsigned long long size, char *dev, |
2c514b71 NB |
1742 | unsigned long long *freesize, |
1743 | int verbose) | |
cdddbdbc | 1744 | { |
c2c087e6 DW |
1745 | struct stat stb; |
1746 | struct intel_super *super = st->sb; | |
1747 | struct dl *dl; | |
1748 | unsigned long long pos = 0; | |
1749 | unsigned long long maxsize; | |
1750 | struct extent *e; | |
1751 | int i; | |
cdddbdbc | 1752 | |
c2c087e6 DW |
1753 | if (level == LEVEL_CONTAINER) |
1754 | return 0; | |
1755 | ||
1756 | if (level == 1 && raiddisks > 2) { | |
2c514b71 NB |
1757 | if (verbose) |
1758 | fprintf(stderr, Name ": imsm does not support more " | |
1759 | "than 2 in a raid1 configuration\n"); | |
c2c087e6 DW |
1760 | return 0; |
1761 | } | |
1762 | ||
1763 | /* We must have the container info already read in. */ | |
1764 | if (!super) | |
1765 | return 0; | |
1766 | ||
1767 | if (!dev) { | |
1768 | /* General test: make sure there is space for | |
2da8544a DW |
1769 | * 'raiddisks' device extents of size 'size' at a given |
1770 | * offset | |
c2c087e6 DW |
1771 | */ |
1772 | unsigned long long minsize = size*2 /* convert to blocks */; | |
2da8544a | 1773 | unsigned long long start_offset = ~0ULL; |
c2c087e6 DW |
1774 | int dcnt = 0; |
1775 | if (minsize == 0) | |
1776 | minsize = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
1777 | for (dl = super->disks; dl ; dl = dl->next) { | |
1778 | int found = 0; | |
1779 | ||
bf5a934a | 1780 | pos = 0; |
c2c087e6 DW |
1781 | i = 0; |
1782 | e = get_extents(super, dl); | |
1783 | if (!e) continue; | |
1784 | do { | |
1785 | unsigned long long esize; | |
1786 | esize = e[i].start - pos; | |
1787 | if (esize >= minsize) | |
1788 | found = 1; | |
2da8544a DW |
1789 | if (found && start_offset == ~0ULL) { |
1790 | start_offset = pos; | |
1791 | break; | |
1792 | } else if (found && pos != start_offset) { | |
1793 | found = 0; | |
1794 | break; | |
1795 | } | |
c2c087e6 DW |
1796 | pos = e[i].start + e[i].size; |
1797 | i++; | |
1798 | } while (e[i-1].size); | |
1799 | if (found) | |
1800 | dcnt++; | |
1801 | free(e); | |
1802 | } | |
1803 | if (dcnt < raiddisks) { | |
2c514b71 NB |
1804 | if (verbose) |
1805 | fprintf(stderr, Name ": imsm: Not enough " | |
1806 | "devices with space for this array " | |
1807 | "(%d < %d)\n", | |
1808 | dcnt, raiddisks); | |
c2c087e6 DW |
1809 | return 0; |
1810 | } | |
1811 | return 1; | |
1812 | } | |
1813 | /* This device must be a member of the set */ | |
1814 | if (stat(dev, &stb) < 0) | |
1815 | return 0; | |
1816 | if ((S_IFMT & stb.st_mode) != S_IFBLK) | |
1817 | return 0; | |
1818 | for (dl = super->disks ; dl ; dl = dl->next) { | |
1819 | if (dl->major == major(stb.st_rdev) && | |
1820 | dl->minor == minor(stb.st_rdev)) | |
1821 | break; | |
1822 | } | |
1823 | if (!dl) { | |
2c514b71 NB |
1824 | if (verbose) |
1825 | fprintf(stderr, Name ": %s is not in the " | |
1826 | "same imsm set\n", dev); | |
c2c087e6 DW |
1827 | return 0; |
1828 | } | |
1829 | e = get_extents(super, dl); | |
1830 | maxsize = 0; | |
1831 | i = 0; | |
1832 | if (e) do { | |
1833 | unsigned long long esize; | |
1834 | esize = e[i].start - pos; | |
1835 | if (esize >= maxsize) | |
1836 | maxsize = esize; | |
1837 | pos = e[i].start + e[i].size; | |
1838 | i++; | |
1839 | } while (e[i-1].size); | |
1840 | *freesize = maxsize; | |
1841 | ||
1842 | return 1; | |
cdddbdbc DW |
1843 | } |
1844 | ||
604b746f JD |
1845 | int imsm_bbm_log_size(struct imsm_super *mpb) |
1846 | { | |
1847 | return __le32_to_cpu(mpb->bbm_log_size); | |
1848 | } | |
1849 | ||
bf5a934a DW |
1850 | static int validate_geometry_imsm(struct supertype *st, int level, int layout, |
1851 | int raiddisks, int chunk, unsigned long long size, | |
1852 | char *dev, unsigned long long *freesize, | |
1853 | int verbose) | |
1854 | { | |
1855 | int fd, cfd; | |
1856 | struct mdinfo *sra; | |
1857 | ||
1858 | /* if given unused devices create a container | |
1859 | * if given given devices in a container create a member volume | |
1860 | */ | |
1861 | if (level == LEVEL_CONTAINER) { | |
1862 | /* Must be a fresh device to add to a container */ | |
1863 | return validate_geometry_imsm_container(st, level, layout, | |
1864 | raiddisks, chunk, size, | |
1865 | dev, freesize, | |
1866 | verbose); | |
1867 | } | |
1868 | ||
1869 | if (st->sb) { | |
1870 | /* creating in a given container */ | |
1871 | return validate_geometry_imsm_volume(st, level, layout, | |
1872 | raiddisks, chunk, size, | |
1873 | dev, freesize, verbose); | |
1874 | } | |
1875 | ||
1876 | /* limit creation to the following levels */ | |
1877 | if (!dev) | |
1878 | switch (level) { | |
1879 | case 0: | |
1880 | case 1: | |
1881 | case 10: | |
1882 | case 5: | |
1883 | break; | |
1884 | default: | |
1885 | return 1; | |
1886 | } | |
1887 | ||
1888 | /* This device needs to be a device in an 'imsm' container */ | |
1889 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
1890 | if (fd >= 0) { | |
1891 | if (verbose) | |
1892 | fprintf(stderr, | |
1893 | Name ": Cannot create this array on device %s\n", | |
1894 | dev); | |
1895 | close(fd); | |
1896 | return 0; | |
1897 | } | |
1898 | if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) { | |
1899 | if (verbose) | |
1900 | fprintf(stderr, Name ": Cannot open %s: %s\n", | |
1901 | dev, strerror(errno)); | |
1902 | return 0; | |
1903 | } | |
1904 | /* Well, it is in use by someone, maybe an 'imsm' container. */ | |
1905 | cfd = open_container(fd); | |
1906 | if (cfd < 0) { | |
1907 | close(fd); | |
1908 | if (verbose) | |
1909 | fprintf(stderr, Name ": Cannot use %s: It is busy\n", | |
1910 | dev); | |
1911 | return 0; | |
1912 | } | |
1913 | sra = sysfs_read(cfd, 0, GET_VERSION); | |
1914 | close(fd); | |
1915 | if (sra && sra->array.major_version == -1 && | |
1916 | strcmp(sra->text_version, "imsm") == 0) { | |
1917 | /* This is a member of a imsm container. Load the container | |
1918 | * and try to create a volume | |
1919 | */ | |
1920 | struct intel_super *super; | |
1921 | ||
1922 | if (load_super_imsm_all(st, cfd, (void **) &super, NULL, 1) == 0) { | |
1923 | st->sb = super; | |
1924 | st->container_dev = fd2devnum(cfd); | |
1925 | close(cfd); | |
1926 | return validate_geometry_imsm_volume(st, level, layout, | |
1927 | raiddisks, chunk, | |
1928 | size, dev, | |
1929 | freesize, verbose); | |
1930 | } | |
1931 | close(cfd); | |
1932 | } else /* may belong to another container */ | |
1933 | return 0; | |
1934 | ||
1935 | return 1; | |
1936 | } | |
1937 | ||
cdddbdbc DW |
1938 | static struct mdinfo *container_content_imsm(struct supertype *st) |
1939 | { | |
4f5bc454 DW |
1940 | /* Given a container loaded by load_super_imsm_all, |
1941 | * extract information about all the arrays into | |
1942 | * an mdinfo tree. | |
1943 | * | |
1944 | * For each imsm_dev create an mdinfo, fill it in, | |
1945 | * then look for matching devices in super->disks | |
1946 | * and create appropriate device mdinfo. | |
1947 | */ | |
1948 | struct intel_super *super = st->sb; | |
949c47a0 | 1949 | struct imsm_super *mpb = super->anchor; |
4f5bc454 DW |
1950 | struct mdinfo *rest = NULL; |
1951 | int i; | |
cdddbdbc | 1952 | |
604b746f JD |
1953 | /* do not assemble arrays that might have bad blocks */ |
1954 | if (imsm_bbm_log_size(super->anchor)) { | |
1955 | fprintf(stderr, Name ": BBM log found in metadata. " | |
1956 | "Cannot activate array(s).\n"); | |
1957 | return NULL; | |
1958 | } | |
1959 | ||
4f5bc454 | 1960 | for (i = 0; i < mpb->num_raid_devs; i++) { |
949c47a0 | 1961 | struct imsm_dev *dev = get_imsm_dev(super, i); |
4f5bc454 DW |
1962 | struct imsm_vol *vol = &dev->vol; |
1963 | struct imsm_map *map = vol->map; | |
1964 | struct mdinfo *this; | |
4f5bc454 DW |
1965 | int slot; |
1966 | ||
1967 | this = malloc(sizeof(*this)); | |
1968 | memset(this, 0, sizeof(*this)); | |
1969 | this->next = rest; | |
1970 | rest = this; | |
1971 | ||
4f5bc454 DW |
1972 | this->array.level = get_imsm_raid_level(map); |
1973 | this->array.raid_disks = map->num_members; | |
c2c087e6 | 1974 | this->array.layout = imsm_level_to_layout(this->array.level); |
4f5bc454 DW |
1975 | this->array.md_minor = -1; |
1976 | this->array.ctime = 0; | |
1977 | this->array.utime = 0; | |
1978 | this->array.chunk_size = __le16_to_cpu(map->blocks_per_strip) << 9; | |
1979 | this->array.state = !vol->dirty; | |
1980 | this->container_member = i; | |
0fd5c350 DW |
1981 | if (map->map_state == IMSM_T_STATE_UNINITIALIZED || dev->vol.dirty) |
1982 | this->resync_start = 0; | |
1983 | else | |
1984 | this->resync_start = ~0ULL; | |
1985 | ||
4f5bc454 DW |
1986 | strncpy(this->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN); |
1987 | this->name[MAX_RAID_SERIAL_LEN] = 0; | |
1988 | ||
159c3a1a NB |
1989 | sprintf(this->text_version, "/%s/%d", |
1990 | devnum2devname(st->container_dev), | |
1991 | this->container_member); | |
1992 | ||
4f5bc454 DW |
1993 | memset(this->uuid, 0, sizeof(this->uuid)); |
1994 | ||
f54e6321 | 1995 | this->component_size = __le32_to_cpu(map->blocks_per_member); |
4f5bc454 DW |
1996 | |
1997 | for (slot = 0 ; slot < map->num_members; slot++) { | |
4f5bc454 DW |
1998 | struct mdinfo *info_d; |
1999 | struct dl *d; | |
2000 | int idx; | |
2001 | __u32 s; | |
2002 | ||
d23fe947 | 2003 | idx = get_imsm_disk_idx(map, slot); |
4f5bc454 DW |
2004 | for (d = super->disks; d ; d = d->next) |
2005 | if (d->index == idx) | |
2006 | break; | |
2007 | ||
2008 | if (d == NULL) | |
2009 | break; /* shouldn't this be continue ?? */ | |
2010 | ||
2011 | info_d = malloc(sizeof(*info_d)); | |
2012 | if (!info_d) | |
2013 | break; /* ditto ?? */ | |
2014 | memset(info_d, 0, sizeof(*info_d)); | |
2015 | info_d->next = this->devs; | |
2016 | this->devs = info_d; | |
2017 | ||
b9f594fe | 2018 | s = __le32_to_cpu(d->disk.status); |
4f5bc454 DW |
2019 | |
2020 | info_d->disk.number = d->index; | |
2021 | info_d->disk.major = d->major; | |
2022 | info_d->disk.minor = d->minor; | |
2023 | info_d->disk.raid_disk = slot; | |
2024 | info_d->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0; | |
2025 | info_d->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0; | |
2026 | info_d->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0; | |
2027 | ||
2028 | this->array.working_disks++; | |
2029 | ||
2030 | info_d->events = __le32_to_cpu(mpb->generation_num); | |
2031 | info_d->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
2032 | info_d->component_size = __le32_to_cpu(map->blocks_per_member); | |
2033 | if (d->devname) | |
2034 | strcpy(info_d->name, d->devname); | |
2035 | } | |
2036 | } | |
2037 | ||
2038 | return rest; | |
cdddbdbc DW |
2039 | } |
2040 | ||
845dea95 | 2041 | |
cba0191b NB |
2042 | static int imsm_open_new(struct supertype *c, struct active_array *a, |
2043 | char *inst) | |
845dea95 | 2044 | { |
0372d5a2 | 2045 | struct intel_super *super = c->sb; |
949c47a0 | 2046 | struct imsm_super *mpb = super->anchor; |
0372d5a2 | 2047 | |
949c47a0 | 2048 | if (atoi(inst) >= mpb->num_raid_devs) { |
0372d5a2 DW |
2049 | fprintf(stderr, "%s: subarry index %d, out of range\n", |
2050 | __func__, atoi(inst)); | |
2051 | return -ENODEV; | |
2052 | } | |
2053 | ||
4e6e574a | 2054 | dprintf("imsm: open_new %s\n", inst); |
cba0191b | 2055 | a->info.container_member = atoi(inst); |
845dea95 NB |
2056 | return 0; |
2057 | } | |
2058 | ||
949c47a0 | 2059 | static __u8 imsm_check_degraded(struct intel_super *super, int n, int failed) |
c2a1e7da | 2060 | { |
949c47a0 | 2061 | struct imsm_dev *dev = get_imsm_dev(super, n); |
c2a1e7da DW |
2062 | struct imsm_map *map = dev->vol.map; |
2063 | ||
2064 | if (!failed) | |
2065 | return map->map_state; | |
2066 | ||
2067 | switch (get_imsm_raid_level(map)) { | |
2068 | case 0: | |
2069 | return IMSM_T_STATE_FAILED; | |
2070 | break; | |
2071 | case 1: | |
2072 | if (failed < map->num_members) | |
2073 | return IMSM_T_STATE_DEGRADED; | |
2074 | else | |
2075 | return IMSM_T_STATE_FAILED; | |
2076 | break; | |
2077 | case 10: | |
2078 | { | |
2079 | /** | |
2080 | * check to see if any mirrors have failed, | |
2081 | * otherwise we are degraded | |
2082 | */ | |
2083 | int device_per_mirror = 2; /* FIXME is this always the case? | |
2084 | * and are they always adjacent? | |
2085 | */ | |
2086 | int failed = 0; | |
2087 | int i; | |
2088 | ||
2089 | for (i = 0; i < map->num_members; i++) { | |
2090 | int idx = get_imsm_disk_idx(map, i); | |
949c47a0 | 2091 | struct imsm_disk *disk = get_imsm_disk(super, idx); |
c2a1e7da DW |
2092 | |
2093 | if (__le32_to_cpu(disk->status) & FAILED_DISK) | |
2094 | failed++; | |
2095 | ||
2096 | if (failed >= device_per_mirror) | |
2097 | return IMSM_T_STATE_FAILED; | |
2098 | ||
2099 | /* reset 'failed' for next mirror set */ | |
2100 | if (!((i + 1) % device_per_mirror)) | |
2101 | failed = 0; | |
2102 | } | |
2103 | ||
2104 | return IMSM_T_STATE_DEGRADED; | |
2105 | } | |
2106 | case 5: | |
2107 | if (failed < 2) | |
2108 | return IMSM_T_STATE_DEGRADED; | |
2109 | else | |
2110 | return IMSM_T_STATE_FAILED; | |
2111 | break; | |
2112 | default: | |
2113 | break; | |
2114 | } | |
2115 | ||
2116 | return map->map_state; | |
2117 | } | |
2118 | ||
949c47a0 | 2119 | static int imsm_count_failed(struct intel_super *super, struct imsm_map *map) |
c2a1e7da DW |
2120 | { |
2121 | int i; | |
2122 | int failed = 0; | |
2123 | struct imsm_disk *disk; | |
2124 | ||
2125 | for (i = 0; i < map->num_members; i++) { | |
2126 | int idx = get_imsm_disk_idx(map, i); | |
2127 | ||
949c47a0 | 2128 | disk = get_imsm_disk(super, idx); |
c2a1e7da DW |
2129 | if (__le32_to_cpu(disk->status) & FAILED_DISK) |
2130 | failed++; | |
2131 | } | |
2132 | ||
2133 | return failed; | |
845dea95 NB |
2134 | } |
2135 | ||
a862209d DW |
2136 | static void imsm_set_array_state(struct active_array *a, int consistent) |
2137 | { | |
2138 | int inst = a->info.container_member; | |
2139 | struct intel_super *super = a->container->sb; | |
949c47a0 | 2140 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
a862209d DW |
2141 | struct imsm_map *map = &dev->vol.map[0]; |
2142 | int dirty = !consistent; | |
2143 | int failed; | |
2144 | __u8 map_state; | |
2145 | ||
2146 | if (a->resync_start == ~0ULL) { | |
949c47a0 DW |
2147 | failed = imsm_count_failed(super, map); |
2148 | map_state = imsm_check_degraded(super, inst, failed); | |
115c3803 | 2149 | /* complete recovery or initial resync */ |
a862209d DW |
2150 | if (!failed) |
2151 | map_state = IMSM_T_STATE_NORMAL; | |
2152 | if (map->map_state != map_state) { | |
4e6e574a | 2153 | dprintf("imsm: map_state %d: %d\n", |
a862209d DW |
2154 | inst, map_state); |
2155 | map->map_state = map_state; | |
2156 | super->updates_pending++; | |
2157 | } | |
a862209d | 2158 | |
115c3803 DW |
2159 | /* complete resync */ |
2160 | if (!dirty && dev->vol.dirty) { | |
2161 | dprintf("imsm: mark 'clean'\n"); | |
2162 | dev->vol.dirty = 0; | |
2163 | super->updates_pending++; | |
2164 | ||
2165 | } | |
2166 | } | |
a862209d | 2167 | |
115c3803 DW |
2168 | /* mark dirty */ |
2169 | if (dirty && !dev->vol.dirty) { | |
2170 | dprintf("imsm: mark 'dirty' (%llu)\n", a->resync_start); | |
2171 | dev->vol.dirty = 1; | |
a862209d DW |
2172 | super->updates_pending++; |
2173 | } | |
2174 | } | |
2175 | ||
8d45d196 | 2176 | static void imsm_set_disk(struct active_array *a, int n, int state) |
845dea95 | 2177 | { |
8d45d196 DW |
2178 | int inst = a->info.container_member; |
2179 | struct intel_super *super = a->container->sb; | |
949c47a0 | 2180 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
8d45d196 DW |
2181 | struct imsm_map *map = dev->vol.map; |
2182 | struct imsm_disk *disk; | |
2183 | __u32 status; | |
2184 | int failed = 0; | |
2185 | int new_failure = 0; | |
2186 | ||
2187 | if (n > map->num_members) | |
2188 | fprintf(stderr, "imsm: set_disk %d out of range 0..%d\n", | |
2189 | n, map->num_members - 1); | |
2190 | ||
2191 | if (n < 0) | |
2192 | return; | |
2193 | ||
4e6e574a | 2194 | dprintf("imsm: set_disk %d:%x\n", n, state); |
8d45d196 | 2195 | |
949c47a0 | 2196 | disk = get_imsm_disk(super, get_imsm_disk_idx(map, n)); |
8d45d196 | 2197 | |
5802a811 | 2198 | /* check for new failures */ |
8d45d196 DW |
2199 | status = __le32_to_cpu(disk->status); |
2200 | if ((state & DS_FAULTY) && !(status & FAILED_DISK)) { | |
2201 | status |= FAILED_DISK; | |
2202 | disk->status = __cpu_to_le32(status); | |
2203 | new_failure = 1; | |
5802a811 | 2204 | super->updates_pending++; |
8d45d196 DW |
2205 | } |
2206 | ||
5802a811 | 2207 | /* the number of failures have changed, count up 'failed' to determine |
8d45d196 DW |
2208 | * degraded / failed status |
2209 | */ | |
2210 | if (new_failure && map->map_state != IMSM_T_STATE_FAILED) | |
949c47a0 | 2211 | failed = imsm_count_failed(super, map); |
8d45d196 | 2212 | |
5802a811 | 2213 | /* determine map_state based on failed or in_sync count */ |
8d45d196 | 2214 | if (failed) |
949c47a0 | 2215 | map->map_state = imsm_check_degraded(super, inst, failed); |
5802a811 DW |
2216 | else if (map->map_state == IMSM_T_STATE_DEGRADED) { |
2217 | struct mdinfo *d; | |
2218 | int working = 0; | |
8d45d196 | 2219 | |
5802a811 DW |
2220 | for (d = a->info.devs ; d ; d = d->next) |
2221 | if (d->curr_state & DS_INSYNC) | |
2222 | working++; | |
2223 | ||
2224 | if (working == a->info.array.raid_disks) { | |
2225 | map->map_state = IMSM_T_STATE_NORMAL; | |
2226 | super->updates_pending++; | |
2227 | } | |
2228 | } | |
845dea95 NB |
2229 | } |
2230 | ||
c2a1e7da DW |
2231 | static int store_imsm_mpb(int fd, struct intel_super *super) |
2232 | { | |
949c47a0 | 2233 | struct imsm_super *mpb = super->anchor; |
c2a1e7da DW |
2234 | __u32 mpb_size = __le32_to_cpu(mpb->mpb_size); |
2235 | unsigned long long dsize; | |
2236 | unsigned long long sectors; | |
2237 | ||
2238 | get_dev_size(fd, NULL, &dsize); | |
2239 | ||
272f648f DW |
2240 | if (mpb_size > 512) { |
2241 | /* -1 to account for anchor */ | |
2242 | sectors = mpb_sectors(mpb) - 1; | |
c2a1e7da | 2243 | |
272f648f DW |
2244 | /* write the extended mpb to the sectors preceeding the anchor */ |
2245 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) | |
2246 | return 1; | |
c2a1e7da | 2247 | |
99e29264 | 2248 | if (write(fd, super->buf + 512, 512 * sectors) != 512 * sectors) |
272f648f DW |
2249 | return 1; |
2250 | } | |
c2a1e7da | 2251 | |
272f648f DW |
2252 | /* first block is stored on second to last sector of the disk */ |
2253 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
c2a1e7da DW |
2254 | return 1; |
2255 | ||
272f648f | 2256 | if (write(fd, super->buf, 512) != 512) |
c2a1e7da DW |
2257 | return 1; |
2258 | ||
c2a1e7da DW |
2259 | return 0; |
2260 | } | |
2261 | ||
2e735d19 | 2262 | static void imsm_sync_metadata(struct supertype *container) |
845dea95 | 2263 | { |
2e735d19 | 2264 | struct intel_super *super = container->sb; |
c2a1e7da DW |
2265 | |
2266 | if (!super->updates_pending) | |
2267 | return; | |
2268 | ||
c2c087e6 | 2269 | write_super_imsm(super, 0); |
c2a1e7da DW |
2270 | |
2271 | super->updates_pending = 0; | |
845dea95 NB |
2272 | } |
2273 | ||
88758e9d DW |
2274 | static struct mdinfo *imsm_activate_spare(struct active_array *a, |
2275 | struct metadata_update **updates) | |
2276 | { | |
2277 | /** | |
d23fe947 DW |
2278 | * Find a device with unused free space and use it to replace a |
2279 | * failed/vacant region in an array. We replace failed regions one a | |
2280 | * array at a time. The result is that a new spare disk will be added | |
2281 | * to the first failed array and after the monitor has finished | |
2282 | * propagating failures the remainder will be consumed. | |
88758e9d | 2283 | * |
d23fe947 DW |
2284 | * FIXME add a capability for mdmon to request spares from another |
2285 | * container. | |
88758e9d DW |
2286 | */ |
2287 | ||
2288 | struct intel_super *super = a->container->sb; | |
88758e9d | 2289 | int inst = a->info.container_member; |
949c47a0 | 2290 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
88758e9d DW |
2291 | struct imsm_map *map = dev->vol.map; |
2292 | int failed = a->info.array.raid_disks; | |
2293 | struct mdinfo *rv = NULL; | |
2294 | struct mdinfo *d; | |
2295 | struct mdinfo *di; | |
2296 | struct metadata_update *mu; | |
2297 | struct dl *dl; | |
2298 | struct imsm_update_activate_spare *u; | |
2299 | int num_spares = 0; | |
2300 | int i; | |
2301 | ||
2302 | for (d = a->info.devs ; d ; d = d->next) { | |
2303 | if ((d->curr_state & DS_FAULTY) && | |
2304 | d->state_fd >= 0) | |
2305 | /* wait for Removal to happen */ | |
2306 | return NULL; | |
2307 | if (d->state_fd >= 0) | |
2308 | failed--; | |
2309 | } | |
2310 | ||
2311 | dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n", | |
2312 | inst, failed, a->info.array.raid_disks, a->info.array.level); | |
949c47a0 | 2313 | if (imsm_check_degraded(super, inst, failed) != IMSM_T_STATE_DEGRADED) |
88758e9d DW |
2314 | return NULL; |
2315 | ||
2316 | /* For each slot, if it is not working, find a spare */ | |
2317 | dl = super->disks; | |
2318 | for (i = 0; i < a->info.array.raid_disks; i++) { | |
2319 | for (d = a->info.devs ; d ; d = d->next) | |
2320 | if (d->disk.raid_disk == i) | |
2321 | break; | |
2322 | dprintf("found %d: %p %x\n", i, d, d?d->curr_state:0); | |
2323 | if (d && (d->state_fd >= 0)) | |
2324 | continue; | |
2325 | ||
2326 | /* OK, this device needs recovery. Find a spare */ | |
2327 | for ( ; dl ; dl = dl->next) { | |
2328 | unsigned long long esize; | |
2329 | unsigned long long pos; | |
2330 | struct mdinfo *d2; | |
2331 | struct extent *ex; | |
88758e9d DW |
2332 | int j; |
2333 | int found; | |
5257ce36 | 2334 | __u32 array_start; |
88758e9d DW |
2335 | |
2336 | /* If in this array, skip */ | |
2337 | for (d2 = a->info.devs ; d2 ; d2 = d2->next) | |
2338 | if (d2->disk.major == dl->major && | |
2339 | d2->disk.minor == dl->minor) { | |
2340 | dprintf("%x:%x already in array\n", dl->major, dl->minor); | |
2341 | break; | |
2342 | } | |
2343 | if (d2) | |
2344 | continue; | |
2345 | ||
d23fe947 DW |
2346 | /* Does this unused device have the requisite free space? |
2347 | * We need a->info.component_size sectors | |
2348 | */ | |
88758e9d DW |
2349 | ex = get_extents(super, dl); |
2350 | if (!ex) { | |
2351 | dprintf("cannot get extents\n"); | |
2352 | continue; | |
2353 | } | |
2354 | found = 0; | |
2355 | j = 0; | |
2356 | pos = 0; | |
5257ce36 | 2357 | array_start = __le32_to_cpu(map->pba_of_lba0); |
88758e9d DW |
2358 | |
2359 | do { | |
5257ce36 DW |
2360 | /* check that we can start at pba_of_lba0 with |
2361 | * a->info.component_size of space | |
2362 | */ | |
88758e9d | 2363 | esize = ex[j].start - pos; |
5257ce36 DW |
2364 | if (array_start >= pos && |
2365 | array_start + a->info.component_size < ex[j].start) { | |
2366 | found = 1; | |
88758e9d DW |
2367 | break; |
2368 | } | |
5257ce36 DW |
2369 | pos = ex[j].start + ex[j].size; |
2370 | j++; | |
2371 | ||
2372 | } while (ex[j-1].size); | |
88758e9d DW |
2373 | |
2374 | free(ex); | |
2375 | if (!found) { | |
2376 | dprintf("%x:%x does not have %llu at %d\n", | |
2377 | dl->major, dl->minor, | |
2378 | a->info.component_size, | |
2379 | __le32_to_cpu(map->pba_of_lba0)); | |
2380 | /* No room */ | |
2381 | continue; | |
2382 | } | |
2383 | ||
5257ce36 | 2384 | /* found a usable disk with enough space */ |
88758e9d DW |
2385 | di = malloc(sizeof(*di)); |
2386 | memset(di, 0, sizeof(*di)); | |
d23fe947 DW |
2387 | |
2388 | /* dl->index will be -1 in the case we are activating a | |
2389 | * pristine spare. imsm_process_update() will create a | |
2390 | * new index in this case. Once a disk is found to be | |
2391 | * failed in all member arrays it is kicked from the | |
2392 | * metadata | |
2393 | */ | |
88758e9d | 2394 | di->disk.number = dl->index; |
d23fe947 DW |
2395 | |
2396 | /* (ab)use di->devs to store a pointer to the device | |
2397 | * we chose | |
2398 | */ | |
2399 | di->devs = (struct mdinfo *) dl; | |
2400 | ||
88758e9d DW |
2401 | di->disk.raid_disk = i; |
2402 | di->disk.major = dl->major; | |
2403 | di->disk.minor = dl->minor; | |
2404 | di->disk.state = 0; | |
5257ce36 | 2405 | di->data_offset = array_start; |
88758e9d DW |
2406 | di->component_size = a->info.component_size; |
2407 | di->container_member = inst; | |
2408 | di->next = rv; | |
2409 | rv = di; | |
2410 | num_spares++; | |
2411 | dprintf("%x:%x to be %d at %llu\n", dl->major, dl->minor, | |
2412 | i, pos); | |
2413 | ||
2414 | break; | |
2415 | } | |
2416 | } | |
2417 | ||
2418 | if (!rv) | |
2419 | /* No spares found */ | |
2420 | return rv; | |
2421 | /* Now 'rv' has a list of devices to return. | |
2422 | * Create a metadata_update record to update the | |
2423 | * disk_ord_tbl for the array | |
2424 | */ | |
2425 | mu = malloc(sizeof(*mu)); | |
2426 | mu->buf = malloc(sizeof(struct imsm_update_activate_spare) * num_spares); | |
2427 | mu->space = NULL; | |
2428 | mu->len = sizeof(struct imsm_update_activate_spare) * num_spares; | |
2429 | mu->next = *updates; | |
2430 | u = (struct imsm_update_activate_spare *) mu->buf; | |
2431 | ||
2432 | for (di = rv ; di ; di = di->next) { | |
2433 | u->type = update_activate_spare; | |
d23fe947 DW |
2434 | u->dl = (struct dl *) di->devs; |
2435 | di->devs = NULL; | |
88758e9d DW |
2436 | u->slot = di->disk.raid_disk; |
2437 | u->array = inst; | |
2438 | u->next = u + 1; | |
2439 | u++; | |
2440 | } | |
2441 | (u-1)->next = NULL; | |
2442 | *updates = mu; | |
2443 | ||
2444 | return rv; | |
2445 | } | |
2446 | ||
8273f55e DW |
2447 | static int disks_overlap(struct imsm_map *m1, struct imsm_map *m2) |
2448 | { | |
2449 | int i; | |
2450 | int j; | |
2451 | int idx; | |
2452 | ||
2453 | for (i = 0; i < m1->num_members; i++) { | |
2454 | idx = get_imsm_disk_idx(m1, i); | |
2455 | for (j = 0; j < m2->num_members; j++) | |
2456 | if (idx == get_imsm_disk_idx(m2, j)) | |
2457 | return 1; | |
2458 | } | |
2459 | ||
2460 | return 0; | |
2461 | } | |
2462 | ||
e8319a19 DW |
2463 | static void imsm_process_update(struct supertype *st, |
2464 | struct metadata_update *update) | |
2465 | { | |
2466 | /** | |
2467 | * crack open the metadata_update envelope to find the update record | |
2468 | * update can be one of: | |
2469 | * update_activate_spare - a spare device has replaced a failed | |
2470 | * device in an array, update the disk_ord_tbl. If this disk is | |
2471 | * present in all member arrays then also clear the SPARE_DISK | |
2472 | * flag | |
2473 | */ | |
2474 | struct intel_super *super = st->sb; | |
949c47a0 | 2475 | struct imsm_super *mpb = super->anchor; |
e8319a19 DW |
2476 | enum imsm_update_type type = *(enum imsm_update_type *) update->buf; |
2477 | ||
2478 | switch (type) { | |
2479 | case update_activate_spare: { | |
2480 | struct imsm_update_activate_spare *u = (void *) update->buf; | |
949c47a0 | 2481 | struct imsm_dev *dev = get_imsm_dev(super, u->array); |
e8319a19 DW |
2482 | struct imsm_map *map = &dev->vol.map[0]; |
2483 | struct active_array *a; | |
2484 | struct imsm_disk *disk; | |
2485 | __u32 status; | |
2486 | struct dl *dl; | |
e8319a19 DW |
2487 | unsigned int found; |
2488 | int victim; | |
2489 | int i; | |
2490 | ||
2491 | for (dl = super->disks; dl; dl = dl->next) | |
d23fe947 | 2492 | if (dl == u->dl) |
e8319a19 DW |
2493 | break; |
2494 | ||
2495 | if (!dl) { | |
2496 | fprintf(stderr, "error: imsm_activate_spare passed " | |
d23fe947 DW |
2497 | "an unknown disk (index: %d serial: %s)\n", |
2498 | u->dl->index, u->dl->serial); | |
e8319a19 DW |
2499 | return; |
2500 | } | |
2501 | ||
2502 | super->updates_pending++; | |
2503 | ||
d23fe947 DW |
2504 | /* adding a pristine spare, assign a new index */ |
2505 | if (dl->index < 0) { | |
2506 | dl->index = super->anchor->num_disks; | |
2507 | super->anchor->num_disks++; | |
2508 | } | |
e8319a19 | 2509 | victim = get_imsm_disk_idx(map, u->slot); |
d23fe947 DW |
2510 | map->disk_ord_tbl[u->slot] = __cpu_to_le32(dl->index); |
2511 | disk = &dl->disk; | |
e8319a19 DW |
2512 | status = __le32_to_cpu(disk->status); |
2513 | status |= CONFIGURED_DISK; | |
d23fe947 | 2514 | status &= ~SPARE_DISK; |
e8319a19 DW |
2515 | disk->status = __cpu_to_le32(status); |
2516 | ||
e8319a19 DW |
2517 | /* count arrays using the victim in the metadata */ |
2518 | found = 0; | |
2519 | for (a = st->arrays; a ; a = a->next) { | |
949c47a0 | 2520 | dev = get_imsm_dev(super, a->info.container_member); |
e8319a19 DW |
2521 | map = &dev->vol.map[0]; |
2522 | for (i = 0; i < map->num_members; i++) | |
2523 | if (victim == get_imsm_disk_idx(map, i)) | |
2524 | found++; | |
2525 | } | |
2526 | ||
2527 | /* clear some flags if the victim is no longer being | |
2528 | * utilized anywhere | |
2529 | */ | |
e8319a19 | 2530 | if (!found) { |
d23fe947 | 2531 | disk = get_imsm_disk(super, victim); |
e8319a19 DW |
2532 | status = __le32_to_cpu(disk->status); |
2533 | status &= ~(CONFIGURED_DISK | USABLE_DISK); | |
2534 | disk->status = __cpu_to_le32(status); | |
d23fe947 DW |
2535 | /* at this point the disk can be removed from the |
2536 | * metadata, however we need to guarantee that we do | |
2537 | * not race with any manager thread routine that relies | |
2538 | * on dl->index or map->disk_ord_tbl | |
2539 | */ | |
e8319a19 | 2540 | } |
8273f55e DW |
2541 | break; |
2542 | } | |
2543 | case update_create_array: { | |
2544 | /* someone wants to create a new array, we need to be aware of | |
2545 | * a few races/collisions: | |
2546 | * 1/ 'Create' called by two separate instances of mdadm | |
2547 | * 2/ 'Create' versus 'activate_spare': mdadm has chosen | |
2548 | * devices that have since been assimilated via | |
2549 | * activate_spare. | |
2550 | * In the event this update can not be carried out mdadm will | |
2551 | * (FIX ME) notice that its update did not take hold. | |
2552 | */ | |
2553 | struct imsm_update_create_array *u = (void *) update->buf; | |
2554 | struct imsm_dev *dev; | |
2555 | struct imsm_map *map, *new_map; | |
2556 | unsigned long long start, end; | |
2557 | unsigned long long new_start, new_end; | |
2558 | int i; | |
2559 | int overlap = 0; | |
2560 | ||
2561 | /* handle racing creates: first come first serve */ | |
2562 | if (u->dev_idx < mpb->num_raid_devs) { | |
2563 | dprintf("%s: subarray %d already defined\n", | |
2564 | __func__, u->dev_idx); | |
2565 | return; | |
2566 | } | |
2567 | ||
2568 | /* check update is next in sequence */ | |
2569 | if (u->dev_idx != mpb->num_raid_devs) { | |
2570 | dprintf("%s: can not create arrays out of sequence\n", | |
2571 | __func__); | |
2572 | return; | |
2573 | } | |
2574 | ||
2575 | new_map = &u->dev.vol.map[0]; | |
2576 | new_start = __le32_to_cpu(new_map->pba_of_lba0); | |
2577 | new_end = new_start + __le32_to_cpu(new_map->blocks_per_member); | |
2578 | ||
2579 | /* handle activate_spare versus create race: | |
2580 | * check to make sure that overlapping arrays do not include | |
2581 | * overalpping disks | |
2582 | */ | |
2583 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
949c47a0 | 2584 | dev = get_imsm_dev(super, i); |
8273f55e DW |
2585 | map = &dev->vol.map[0]; |
2586 | start = __le32_to_cpu(map->pba_of_lba0); | |
2587 | end = start + __le32_to_cpu(map->blocks_per_member); | |
2588 | if ((new_start >= start && new_start <= end) || | |
2589 | (start >= new_start && start <= new_end)) | |
2590 | overlap = 1; | |
2591 | if (overlap && disks_overlap(map, new_map)) { | |
2592 | dprintf("%s: arrays overlap\n", __func__); | |
2593 | return; | |
2594 | } | |
2595 | } | |
2596 | /* check num_members sanity */ | |
2597 | if (new_map->num_members > mpb->num_disks) { | |
2598 | dprintf("%s: num_disks out of range\n", __func__); | |
2599 | return; | |
2600 | } | |
2601 | ||
949c47a0 DW |
2602 | /* check that prepare update was successful */ |
2603 | if (!update->space) { | |
2604 | dprintf("%s: prepare update failed\n", __func__); | |
2605 | return; | |
2606 | } | |
2607 | ||
8273f55e | 2608 | super->updates_pending++; |
949c47a0 DW |
2609 | dev = update->space; |
2610 | update->space = NULL; | |
2611 | imsm_copy_dev(dev, &u->dev); | |
2612 | super->dev_tbl[u->dev_idx] = dev; | |
8273f55e | 2613 | mpb->num_raid_devs++; |
8273f55e DW |
2614 | |
2615 | /* fix up flags, if arrays overlap then the drives can not be | |
2616 | * spares | |
2617 | */ | |
2618 | for (i = 0; i < map->num_members; i++) { | |
2619 | struct imsm_disk *disk; | |
2620 | __u32 status; | |
2621 | ||
949c47a0 | 2622 | disk = get_imsm_disk(super, get_imsm_disk_idx(map, i)); |
8273f55e DW |
2623 | status = __le32_to_cpu(disk->status); |
2624 | status |= CONFIGURED_DISK; | |
2625 | if (overlap) | |
2626 | status &= ~SPARE_DISK; | |
2627 | disk->status = __cpu_to_le32(status); | |
2628 | } | |
2629 | break; | |
e8319a19 DW |
2630 | } |
2631 | } | |
2632 | } | |
88758e9d | 2633 | |
8273f55e DW |
2634 | static void imsm_prepare_update(struct supertype *st, |
2635 | struct metadata_update *update) | |
2636 | { | |
949c47a0 DW |
2637 | /** |
2638 | * Allocate space to hold new disk entries, raid-device entries or a | |
2639 | * new mpb if necessary. We currently maintain an mpb large enough to | |
2640 | * hold 2 subarrays for the given number of disks. This may not be | |
2641 | * sufficient when reshaping. | |
8273f55e DW |
2642 | * |
2643 | * FIX ME handle the reshape case. | |
2644 | * | |
2645 | * The monitor will be able to safely change super->mpb by arranging | |
2646 | * for it to be freed in check_update_queue(). I.e. the monitor thread | |
2647 | * will start using the new pointer and the manager can continue to use | |
2648 | * the old value until check_update_queue() runs. | |
2649 | */ | |
949c47a0 DW |
2650 | enum imsm_update_type type = *(enum imsm_update_type *) update->buf; |
2651 | ||
2652 | switch (type) { | |
2653 | case update_create_array: { | |
2654 | struct imsm_update_create_array *u = (void *) update->buf; | |
2655 | size_t len = sizeof_imsm_dev(&u->dev); | |
2656 | ||
2657 | update->space = malloc(len); | |
2658 | break; | |
2659 | default: | |
2660 | break; | |
2661 | } | |
2662 | } | |
8273f55e DW |
2663 | |
2664 | return; | |
2665 | } | |
2666 | ||
cdddbdbc DW |
2667 | struct superswitch super_imsm = { |
2668 | #ifndef MDASSEMBLE | |
2669 | .examine_super = examine_super_imsm, | |
2670 | .brief_examine_super = brief_examine_super_imsm, | |
2671 | .detail_super = detail_super_imsm, | |
2672 | .brief_detail_super = brief_detail_super_imsm, | |
bf5a934a | 2673 | .write_init_super = write_init_super_imsm, |
cdddbdbc DW |
2674 | #endif |
2675 | .match_home = match_home_imsm, | |
2676 | .uuid_from_super= uuid_from_super_imsm, | |
2677 | .getinfo_super = getinfo_super_imsm, | |
2678 | .update_super = update_super_imsm, | |
2679 | ||
2680 | .avail_size = avail_size_imsm, | |
2681 | ||
2682 | .compare_super = compare_super_imsm, | |
2683 | ||
2684 | .load_super = load_super_imsm, | |
bf5a934a DW |
2685 | .init_super = init_super_imsm, |
2686 | .add_to_super = add_to_super_imsm, | |
cdddbdbc DW |
2687 | .store_super = store_zero_imsm, |
2688 | .free_super = free_super_imsm, | |
2689 | .match_metadata_desc = match_metadata_desc_imsm, | |
bf5a934a | 2690 | .container_content = container_content_imsm, |
cdddbdbc DW |
2691 | |
2692 | .validate_geometry = validate_geometry_imsm, | |
cdddbdbc | 2693 | .external = 1, |
845dea95 NB |
2694 | |
2695 | /* for mdmon */ | |
2696 | .open_new = imsm_open_new, | |
2697 | .load_super = load_super_imsm, | |
ed9d66aa | 2698 | .set_array_state= imsm_set_array_state, |
845dea95 NB |
2699 | .set_disk = imsm_set_disk, |
2700 | .sync_metadata = imsm_sync_metadata, | |
88758e9d | 2701 | .activate_spare = imsm_activate_spare, |
e8319a19 | 2702 | .process_update = imsm_process_update, |
8273f55e | 2703 | .prepare_update = imsm_prepare_update, |
cdddbdbc | 2704 | }; |