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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 */ | |
7eef0453 | 71 | #define IMSM_ORD_REBUILD (1 << 24) |
cdddbdbc | 72 | __u32 disk_ord_tbl[1]; /* disk_ord_tbl[num_members], |
7eef0453 DW |
73 | * top byte contains some flags |
74 | */ | |
cdddbdbc DW |
75 | } __attribute__ ((packed)); |
76 | ||
77 | struct imsm_vol { | |
78 | __u32 reserved[2]; | |
79 | __u8 migr_state; /* Normal or Migrating */ | |
80 | __u8 migr_type; /* Initializing, Rebuilding, ... */ | |
81 | __u8 dirty; | |
82 | __u8 fill[1]; | |
83 | __u32 filler[5]; | |
84 | struct imsm_map map[1]; | |
85 | /* here comes another one if migr_state */ | |
86 | } __attribute__ ((packed)); | |
87 | ||
88 | struct imsm_dev { | |
89 | __u8 volume[MAX_RAID_SERIAL_LEN]; | |
90 | __u32 size_low; | |
91 | __u32 size_high; | |
92 | __u32 status; /* Persistent RaidDev status */ | |
93 | __u32 reserved_blocks; /* Reserved blocks at beginning of volume */ | |
94 | #define IMSM_DEV_FILLERS 12 | |
95 | __u32 filler[IMSM_DEV_FILLERS]; | |
96 | struct imsm_vol vol; | |
97 | } __attribute__ ((packed)); | |
98 | ||
99 | struct imsm_super { | |
100 | __u8 sig[MAX_SIGNATURE_LENGTH]; /* 0x00 - 0x1F */ | |
101 | __u32 check_sum; /* 0x20 - 0x23 MPB Checksum */ | |
102 | __u32 mpb_size; /* 0x24 - 0x27 Size of MPB */ | |
103 | __u32 family_num; /* 0x28 - 0x2B Checksum from first time this config was written */ | |
104 | __u32 generation_num; /* 0x2C - 0x2F Incremented each time this array's MPB is written */ | |
604b746f JD |
105 | __u32 error_log_size; /* 0x30 - 0x33 in bytes */ |
106 | __u32 attributes; /* 0x34 - 0x37 */ | |
cdddbdbc DW |
107 | __u8 num_disks; /* 0x38 Number of configured disks */ |
108 | __u8 num_raid_devs; /* 0x39 Number of configured volumes */ | |
604b746f JD |
109 | __u8 error_log_pos; /* 0x3A */ |
110 | __u8 fill[1]; /* 0x3B */ | |
111 | __u32 cache_size; /* 0x3c - 0x40 in mb */ | |
112 | __u32 orig_family_num; /* 0x40 - 0x43 original family num */ | |
113 | __u32 pwr_cycle_count; /* 0x44 - 0x47 simulated power cycle count for array */ | |
114 | __u32 bbm_log_size; /* 0x48 - 0x4B - size of bad Block Mgmt Log in bytes */ | |
115 | #define IMSM_FILLERS 35 | |
116 | __u32 filler[IMSM_FILLERS]; /* 0x4C - 0xD7 RAID_MPB_FILLERS */ | |
cdddbdbc DW |
117 | struct imsm_disk disk[1]; /* 0xD8 diskTbl[numDisks] */ |
118 | /* here comes imsm_dev[num_raid_devs] */ | |
604b746f | 119 | /* here comes BBM logs */ |
cdddbdbc DW |
120 | } __attribute__ ((packed)); |
121 | ||
604b746f JD |
122 | #define BBM_LOG_MAX_ENTRIES 254 |
123 | ||
124 | struct bbm_log_entry { | |
125 | __u64 defective_block_start; | |
126 | #define UNREADABLE 0xFFFFFFFF | |
127 | __u32 spare_block_offset; | |
128 | __u16 remapped_marked_count; | |
129 | __u16 disk_ordinal; | |
130 | } __attribute__ ((__packed__)); | |
131 | ||
132 | struct bbm_log { | |
133 | __u32 signature; /* 0xABADB10C */ | |
134 | __u32 entry_count; | |
135 | __u32 reserved_spare_block_count; /* 0 */ | |
136 | __u32 reserved; /* 0xFFFF */ | |
137 | __u64 first_spare_lba; | |
138 | struct bbm_log_entry mapped_block_entries[BBM_LOG_MAX_ENTRIES]; | |
139 | } __attribute__ ((__packed__)); | |
140 | ||
141 | ||
cdddbdbc DW |
142 | #ifndef MDASSEMBLE |
143 | static char *map_state_str[] = { "normal", "uninitialized", "degraded", "failed" }; | |
144 | #endif | |
145 | ||
87eb16df | 146 | static unsigned int sector_count(__u32 bytes) |
cdddbdbc | 147 | { |
87eb16df DW |
148 | return ((bytes + (512-1)) & (~(512-1))) / 512; |
149 | } | |
cdddbdbc | 150 | |
87eb16df DW |
151 | static unsigned int mpb_sectors(struct imsm_super *mpb) |
152 | { | |
153 | return sector_count(__le32_to_cpu(mpb->mpb_size)); | |
cdddbdbc DW |
154 | } |
155 | ||
156 | /* internal representation of IMSM metadata */ | |
157 | struct intel_super { | |
158 | union { | |
949c47a0 DW |
159 | void *buf; /* O_DIRECT buffer for reading/writing metadata */ |
160 | struct imsm_super *anchor; /* immovable parameters */ | |
cdddbdbc | 161 | }; |
949c47a0 | 162 | size_t len; /* size of the 'buf' allocation */ |
4d7b1503 DW |
163 | void *next_buf; /* for realloc'ing buf from the manager */ |
164 | size_t next_len; | |
c2c087e6 DW |
165 | int updates_pending; /* count of pending updates for mdmon */ |
166 | int creating_imsm; /* flag to indicate container creation */ | |
bf5a934a | 167 | int current_vol; /* index of raid device undergoing creation */ |
949c47a0 DW |
168 | #define IMSM_MAX_RAID_DEVS 2 |
169 | struct imsm_dev *dev_tbl[IMSM_MAX_RAID_DEVS]; | |
cdddbdbc DW |
170 | struct dl { |
171 | struct dl *next; | |
172 | int index; | |
173 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
174 | int major, minor; | |
175 | char *devname; | |
b9f594fe | 176 | struct imsm_disk disk; |
cdddbdbc DW |
177 | int fd; |
178 | } *disks; | |
43dad3d6 DW |
179 | struct dl *add; /* list of disks to add while mdmon active */ |
180 | struct bbm_log *bbm_log; | |
cdddbdbc DW |
181 | }; |
182 | ||
c2c087e6 DW |
183 | struct extent { |
184 | unsigned long long start, size; | |
185 | }; | |
186 | ||
88758e9d DW |
187 | /* definition of messages passed to imsm_process_update */ |
188 | enum imsm_update_type { | |
189 | update_activate_spare, | |
8273f55e | 190 | update_create_array, |
43dad3d6 | 191 | update_add_disk, |
88758e9d DW |
192 | }; |
193 | ||
194 | struct imsm_update_activate_spare { | |
195 | enum imsm_update_type type; | |
d23fe947 | 196 | struct dl *dl; |
88758e9d DW |
197 | int slot; |
198 | int array; | |
199 | struct imsm_update_activate_spare *next; | |
200 | }; | |
201 | ||
8273f55e DW |
202 | struct imsm_update_create_array { |
203 | enum imsm_update_type type; | |
8273f55e | 204 | int dev_idx; |
6a3e913e | 205 | struct imsm_dev dev; |
8273f55e DW |
206 | }; |
207 | ||
43dad3d6 DW |
208 | struct imsm_update_add_disk { |
209 | enum imsm_update_type type; | |
210 | }; | |
211 | ||
0030e8d6 DW |
212 | static int imsm_env_devname_as_serial(void) |
213 | { | |
214 | char *val = getenv("IMSM_DEVNAME_AS_SERIAL"); | |
215 | ||
216 | if (val && atoi(val) == 1) | |
217 | return 1; | |
218 | ||
219 | return 0; | |
220 | } | |
221 | ||
222 | ||
cdddbdbc DW |
223 | static struct supertype *match_metadata_desc_imsm(char *arg) |
224 | { | |
225 | struct supertype *st; | |
226 | ||
227 | if (strcmp(arg, "imsm") != 0 && | |
228 | strcmp(arg, "default") != 0 | |
229 | ) | |
230 | return NULL; | |
231 | ||
232 | st = malloc(sizeof(*st)); | |
ef609477 | 233 | memset(st, 0, sizeof(*st)); |
cdddbdbc DW |
234 | st->ss = &super_imsm; |
235 | st->max_devs = IMSM_MAX_DEVICES; | |
236 | st->minor_version = 0; | |
237 | st->sb = NULL; | |
238 | return st; | |
239 | } | |
240 | ||
0e600426 | 241 | #ifndef MDASSEMBLE |
cdddbdbc DW |
242 | static __u8 *get_imsm_version(struct imsm_super *mpb) |
243 | { | |
244 | return &mpb->sig[MPB_SIG_LEN]; | |
245 | } | |
0e600426 | 246 | #endif |
cdddbdbc | 247 | |
949c47a0 DW |
248 | /* retrieve a disk directly from the anchor when the anchor is known to be |
249 | * up-to-date, currently only at load time | |
250 | */ | |
251 | static struct imsm_disk *__get_imsm_disk(struct imsm_super *mpb, __u8 index) | |
cdddbdbc | 252 | { |
949c47a0 | 253 | if (index >= mpb->num_disks) |
cdddbdbc DW |
254 | return NULL; |
255 | return &mpb->disk[index]; | |
256 | } | |
257 | ||
0e600426 | 258 | #ifndef MDASSEMBLE |
b9f594fe | 259 | /* retrieve a disk from the parsed metadata */ |
949c47a0 DW |
260 | static struct imsm_disk *get_imsm_disk(struct intel_super *super, __u8 index) |
261 | { | |
b9f594fe DW |
262 | struct dl *d; |
263 | ||
264 | for (d = super->disks; d; d = d->next) | |
265 | if (d->index == index) | |
266 | return &d->disk; | |
267 | ||
268 | return NULL; | |
949c47a0 | 269 | } |
0e600426 | 270 | #endif |
949c47a0 DW |
271 | |
272 | /* generate a checksum directly from the anchor when the anchor is known to be | |
273 | * up-to-date, currently only at load or write_super after coalescing | |
274 | */ | |
275 | static __u32 __gen_imsm_checksum(struct imsm_super *mpb) | |
cdddbdbc DW |
276 | { |
277 | __u32 end = mpb->mpb_size / sizeof(end); | |
278 | __u32 *p = (__u32 *) mpb; | |
279 | __u32 sum = 0; | |
280 | ||
281 | while (end--) | |
282 | sum += __le32_to_cpu(*p++); | |
283 | ||
284 | return sum - __le32_to_cpu(mpb->check_sum); | |
285 | } | |
286 | ||
a965f303 DW |
287 | static size_t sizeof_imsm_map(struct imsm_map *map) |
288 | { | |
289 | return sizeof(struct imsm_map) + sizeof(__u32) * (map->num_members - 1); | |
290 | } | |
291 | ||
292 | struct imsm_map *get_imsm_map(struct imsm_dev *dev, int second_map) | |
cdddbdbc | 293 | { |
a965f303 DW |
294 | struct imsm_map *map = &dev->vol.map[0]; |
295 | ||
296 | if (second_map && !dev->vol.migr_state) | |
297 | return NULL; | |
298 | else if (second_map) { | |
299 | void *ptr = map; | |
300 | ||
301 | return ptr + sizeof_imsm_map(map); | |
302 | } else | |
303 | return map; | |
304 | ||
305 | } | |
cdddbdbc | 306 | |
3393c6af DW |
307 | /* return the size of the device. |
308 | * migr_state increases the returned size if map[0] were to be duplicated | |
309 | */ | |
310 | static size_t sizeof_imsm_dev(struct imsm_dev *dev, int migr_state) | |
a965f303 DW |
311 | { |
312 | size_t size = sizeof(*dev) - sizeof(struct imsm_map) + | |
313 | sizeof_imsm_map(get_imsm_map(dev, 0)); | |
cdddbdbc DW |
314 | |
315 | /* migrating means an additional map */ | |
a965f303 DW |
316 | if (dev->vol.migr_state) |
317 | size += sizeof_imsm_map(get_imsm_map(dev, 1)); | |
3393c6af DW |
318 | else if (migr_state) |
319 | size += sizeof_imsm_map(get_imsm_map(dev, 0)); | |
cdddbdbc DW |
320 | |
321 | return size; | |
322 | } | |
323 | ||
949c47a0 | 324 | static struct imsm_dev *__get_imsm_dev(struct imsm_super *mpb, __u8 index) |
cdddbdbc DW |
325 | { |
326 | int offset; | |
327 | int i; | |
328 | void *_mpb = mpb; | |
329 | ||
949c47a0 | 330 | if (index >= mpb->num_raid_devs) |
cdddbdbc DW |
331 | return NULL; |
332 | ||
333 | /* devices start after all disks */ | |
334 | offset = ((void *) &mpb->disk[mpb->num_disks]) - _mpb; | |
335 | ||
336 | for (i = 0; i <= index; i++) | |
337 | if (i == index) | |
338 | return _mpb + offset; | |
339 | else | |
3393c6af | 340 | offset += sizeof_imsm_dev(_mpb + offset, 0); |
cdddbdbc DW |
341 | |
342 | return NULL; | |
343 | } | |
344 | ||
949c47a0 DW |
345 | static struct imsm_dev *get_imsm_dev(struct intel_super *super, __u8 index) |
346 | { | |
347 | if (index >= super->anchor->num_raid_devs) | |
348 | return NULL; | |
349 | return super->dev_tbl[index]; | |
350 | } | |
351 | ||
7eef0453 DW |
352 | static __u32 get_imsm_ord_tbl_ent(struct imsm_dev *dev, int slot) |
353 | { | |
354 | struct imsm_map *map; | |
355 | ||
356 | if (dev->vol.migr_state) | |
7eef0453 | 357 | map = get_imsm_map(dev, 1); |
fb9bf0d3 DW |
358 | else |
359 | map = get_imsm_map(dev, 0); | |
7eef0453 | 360 | |
ff077194 DW |
361 | /* top byte identifies disk under rebuild */ |
362 | return __le32_to_cpu(map->disk_ord_tbl[slot]); | |
363 | } | |
364 | ||
365 | #define ord_to_idx(ord) (((ord) << 8) >> 8) | |
366 | static __u32 get_imsm_disk_idx(struct imsm_dev *dev, int slot) | |
367 | { | |
368 | __u32 ord = get_imsm_ord_tbl_ent(dev, slot); | |
369 | ||
370 | return ord_to_idx(ord); | |
7eef0453 DW |
371 | } |
372 | ||
be73972f DW |
373 | static void set_imsm_ord_tbl_ent(struct imsm_map *map, int slot, __u32 ord) |
374 | { | |
375 | map->disk_ord_tbl[slot] = __cpu_to_le32(ord); | |
376 | } | |
377 | ||
cdddbdbc DW |
378 | static int get_imsm_raid_level(struct imsm_map *map) |
379 | { | |
380 | if (map->raid_level == 1) { | |
381 | if (map->num_members == 2) | |
382 | return 1; | |
383 | else | |
384 | return 10; | |
385 | } | |
386 | ||
387 | return map->raid_level; | |
388 | } | |
389 | ||
0e600426 | 390 | #ifndef MDASSEMBLE |
c2c087e6 DW |
391 | static int cmp_extent(const void *av, const void *bv) |
392 | { | |
393 | const struct extent *a = av; | |
394 | const struct extent *b = bv; | |
395 | if (a->start < b->start) | |
396 | return -1; | |
397 | if (a->start > b->start) | |
398 | return 1; | |
399 | return 0; | |
400 | } | |
401 | ||
402 | static struct extent *get_extents(struct intel_super *super, struct dl *dl) | |
403 | { | |
404 | /* find a list of used extents on the given physical device */ | |
c2c087e6 DW |
405 | struct extent *rv, *e; |
406 | int i, j; | |
407 | int memberships = 0; | |
408 | ||
949c47a0 DW |
409 | for (i = 0; i < super->anchor->num_raid_devs; i++) { |
410 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
a965f303 | 411 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2c087e6 DW |
412 | |
413 | for (j = 0; j < map->num_members; j++) { | |
ff077194 | 414 | __u32 index = get_imsm_disk_idx(dev, j); |
c2c087e6 DW |
415 | |
416 | if (index == dl->index) | |
417 | memberships++; | |
418 | } | |
419 | } | |
420 | rv = malloc(sizeof(struct extent) * (memberships + 1)); | |
421 | if (!rv) | |
422 | return NULL; | |
423 | e = rv; | |
424 | ||
949c47a0 DW |
425 | for (i = 0; i < super->anchor->num_raid_devs; i++) { |
426 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
a965f303 | 427 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2c087e6 DW |
428 | |
429 | for (j = 0; j < map->num_members; j++) { | |
ff077194 | 430 | __u32 index = get_imsm_disk_idx(dev, j); |
c2c087e6 DW |
431 | |
432 | if (index == dl->index) { | |
433 | e->start = __le32_to_cpu(map->pba_of_lba0); | |
434 | e->size = __le32_to_cpu(map->blocks_per_member); | |
435 | e++; | |
436 | } | |
437 | } | |
438 | } | |
439 | qsort(rv, memberships, sizeof(*rv), cmp_extent); | |
440 | ||
b9f594fe | 441 | e->start = __le32_to_cpu(dl->disk.total_blocks) - |
c2c087e6 DW |
442 | (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); |
443 | e->size = 0; | |
444 | return rv; | |
445 | } | |
446 | ||
cdddbdbc DW |
447 | static void print_imsm_dev(struct imsm_dev *dev, int index) |
448 | { | |
449 | __u64 sz; | |
450 | int slot; | |
a965f303 | 451 | struct imsm_map *map = get_imsm_map(dev, 0); |
b10b37b8 | 452 | __u32 ord; |
cdddbdbc DW |
453 | |
454 | printf("\n"); | |
455 | printf("[%s]:\n", dev->volume); | |
456 | printf(" RAID Level : %d\n", get_imsm_raid_level(map)); | |
457 | printf(" Members : %d\n", map->num_members); | |
458 | for (slot = 0; slot < map->num_members; slot++) | |
ff077194 | 459 | if (index == get_imsm_disk_idx(dev, slot)) |
cdddbdbc | 460 | break; |
b10b37b8 DW |
461 | if (slot < map->num_members) { |
462 | ord = get_imsm_ord_tbl_ent(dev, slot); | |
463 | printf(" This Slot : %d%s\n", slot, | |
464 | ord & IMSM_ORD_REBUILD ? " (out-of-sync)" : ""); | |
465 | } else | |
cdddbdbc DW |
466 | printf(" This Slot : ?\n"); |
467 | sz = __le32_to_cpu(dev->size_high); | |
468 | sz <<= 32; | |
469 | sz += __le32_to_cpu(dev->size_low); | |
470 | printf(" Array Size : %llu%s\n", (unsigned long long)sz, | |
471 | human_size(sz * 512)); | |
472 | sz = __le32_to_cpu(map->blocks_per_member); | |
473 | printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz, | |
474 | human_size(sz * 512)); | |
475 | printf(" Sector Offset : %u\n", | |
476 | __le32_to_cpu(map->pba_of_lba0)); | |
477 | printf(" Num Stripes : %u\n", | |
478 | __le32_to_cpu(map->num_data_stripes)); | |
479 | printf(" Chunk Size : %u KiB\n", | |
480 | __le16_to_cpu(map->blocks_per_strip) / 2); | |
481 | printf(" Reserved : %d\n", __le32_to_cpu(dev->reserved_blocks)); | |
3393c6af DW |
482 | printf(" Migrate State : %s", dev->vol.migr_state ? "migrating" : "idle"); |
483 | if (dev->vol.migr_state) | |
484 | printf(": %s", dev->vol.migr_type ? "rebuilding" : "initializing"); | |
485 | printf("\n"); | |
486 | printf(" Map State : %s", map_state_str[map->map_state]); | |
487 | if (dev->vol.migr_state) { | |
488 | struct imsm_map *map = get_imsm_map(dev, 1); | |
b10b37b8 | 489 | printf(" <-- %s", map_state_str[map->map_state]); |
3393c6af DW |
490 | } |
491 | printf("\n"); | |
cdddbdbc | 492 | printf(" Dirty State : %s\n", dev->vol.dirty ? "dirty" : "clean"); |
cdddbdbc DW |
493 | } |
494 | ||
495 | static void print_imsm_disk(struct imsm_super *mpb, int index) | |
496 | { | |
949c47a0 | 497 | struct imsm_disk *disk = __get_imsm_disk(mpb, index); |
1f24f035 | 498 | char str[MAX_RAID_SERIAL_LEN + 1]; |
cdddbdbc DW |
499 | __u32 s; |
500 | __u64 sz; | |
501 | ||
e9d82038 DW |
502 | if (index < 0) |
503 | return; | |
504 | ||
cdddbdbc | 505 | printf("\n"); |
1f24f035 | 506 | snprintf(str, MAX_RAID_SERIAL_LEN + 1, "%s", disk->serial); |
cdddbdbc DW |
507 | printf(" Disk%02d Serial : %s\n", index, str); |
508 | s = __le32_to_cpu(disk->status); | |
509 | printf(" State :%s%s%s%s\n", s&SPARE_DISK ? " spare" : "", | |
510 | s&CONFIGURED_DISK ? " active" : "", | |
511 | s&FAILED_DISK ? " failed" : "", | |
512 | s&USABLE_DISK ? " usable" : ""); | |
513 | printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id)); | |
c2c087e6 DW |
514 | sz = __le32_to_cpu(disk->total_blocks) - |
515 | (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS * mpb->num_raid_devs); | |
cdddbdbc DW |
516 | printf(" Usable Size : %llu%s\n", (unsigned long long)sz, |
517 | human_size(sz * 512)); | |
518 | } | |
519 | ||
520 | static void examine_super_imsm(struct supertype *st, char *homehost) | |
521 | { | |
522 | struct intel_super *super = st->sb; | |
949c47a0 | 523 | struct imsm_super *mpb = super->anchor; |
cdddbdbc DW |
524 | char str[MAX_SIGNATURE_LENGTH]; |
525 | int i; | |
526 | __u32 sum; | |
527 | ||
528 | snprintf(str, MPB_SIG_LEN, "%s", mpb->sig); | |
529 | printf(" Magic : %s\n", str); | |
530 | snprintf(str, strlen(MPB_VERSION_RAID0), "%s", get_imsm_version(mpb)); | |
531 | printf(" Version : %s\n", get_imsm_version(mpb)); | |
532 | printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num)); | |
533 | printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num)); | |
534 | sum = __le32_to_cpu(mpb->check_sum); | |
535 | printf(" Checksum : %08x %s\n", sum, | |
949c47a0 | 536 | __gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect"); |
87eb16df | 537 | printf(" MPB Sectors : %d\n", mpb_sectors(mpb)); |
cdddbdbc DW |
538 | printf(" Disks : %d\n", mpb->num_disks); |
539 | printf(" RAID Devices : %d\n", mpb->num_raid_devs); | |
540 | print_imsm_disk(mpb, super->disks->index); | |
604b746f JD |
541 | if (super->bbm_log) { |
542 | struct bbm_log *log = super->bbm_log; | |
543 | ||
544 | printf("\n"); | |
545 | printf("Bad Block Management Log:\n"); | |
546 | printf(" Log Size : %d\n", __le32_to_cpu(mpb->bbm_log_size)); | |
547 | printf(" Signature : %x\n", __le32_to_cpu(log->signature)); | |
548 | printf(" Entry Count : %d\n", __le32_to_cpu(log->entry_count)); | |
549 | printf(" Spare Blocks : %d\n", __le32_to_cpu(log->reserved_spare_block_count)); | |
550 | printf(" First Spare : %llx\n", __le64_to_cpu(log->first_spare_lba)); | |
551 | } | |
cdddbdbc | 552 | for (i = 0; i < mpb->num_raid_devs; i++) |
949c47a0 | 553 | print_imsm_dev(__get_imsm_dev(mpb, i), super->disks->index); |
cdddbdbc DW |
554 | for (i = 0; i < mpb->num_disks; i++) { |
555 | if (i == super->disks->index) | |
556 | continue; | |
557 | print_imsm_disk(mpb, i); | |
558 | } | |
559 | } | |
560 | ||
561 | static void brief_examine_super_imsm(struct supertype *st) | |
562 | { | |
828408eb | 563 | printf("ARRAY /dev/imsm metadata=imsm\n"); |
cdddbdbc DW |
564 | } |
565 | ||
566 | static void detail_super_imsm(struct supertype *st, char *homehost) | |
567 | { | |
568 | printf("%s\n", __FUNCTION__); | |
569 | } | |
570 | ||
571 | static void brief_detail_super_imsm(struct supertype *st) | |
572 | { | |
573 | printf("%s\n", __FUNCTION__); | |
574 | } | |
575 | #endif | |
576 | ||
577 | static int match_home_imsm(struct supertype *st, char *homehost) | |
578 | { | |
579 | printf("%s\n", __FUNCTION__); | |
580 | ||
581 | return 0; | |
582 | } | |
583 | ||
584 | static void uuid_from_super_imsm(struct supertype *st, int uuid[4]) | |
585 | { | |
43dad3d6 DW |
586 | /* imsm does not track uuid's so just make sure we never return |
587 | * the same value twice to break uuid matching in Manage_subdevs | |
588 | * FIXME what about the use of uuid's with bitmap's? | |
589 | */ | |
590 | static int dummy_id = 0; | |
591 | ||
592 | uuid[0] = dummy_id++; | |
cdddbdbc DW |
593 | } |
594 | ||
0d481d37 | 595 | #if 0 |
4f5bc454 DW |
596 | static void |
597 | get_imsm_numerical_version(struct imsm_super *mpb, int *m, int *p) | |
cdddbdbc | 598 | { |
cdddbdbc DW |
599 | __u8 *v = get_imsm_version(mpb); |
600 | __u8 *end = mpb->sig + MAX_SIGNATURE_LENGTH; | |
601 | char major[] = { 0, 0, 0 }; | |
602 | char minor[] = { 0 ,0, 0 }; | |
603 | char patch[] = { 0, 0, 0 }; | |
604 | char *ver_parse[] = { major, minor, patch }; | |
605 | int i, j; | |
606 | ||
607 | i = j = 0; | |
608 | while (*v != '\0' && v < end) { | |
609 | if (*v != '.' && j < 2) | |
610 | ver_parse[i][j++] = *v; | |
611 | else { | |
612 | i++; | |
613 | j = 0; | |
614 | } | |
615 | v++; | |
616 | } | |
617 | ||
4f5bc454 DW |
618 | *m = strtol(minor, NULL, 0); |
619 | *p = strtol(patch, NULL, 0); | |
620 | } | |
0d481d37 | 621 | #endif |
4f5bc454 | 622 | |
c2c087e6 DW |
623 | static int imsm_level_to_layout(int level) |
624 | { | |
625 | switch (level) { | |
626 | case 0: | |
627 | case 1: | |
628 | return 0; | |
629 | case 5: | |
630 | case 6: | |
a380c027 | 631 | return ALGORITHM_LEFT_ASYMMETRIC; |
c2c087e6 DW |
632 | case 10: |
633 | return 0x102; //FIXME is this correct? | |
634 | } | |
635 | return -1; | |
636 | } | |
637 | ||
bf5a934a DW |
638 | static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info) |
639 | { | |
640 | struct intel_super *super = st->sb; | |
949c47a0 | 641 | struct imsm_dev *dev = get_imsm_dev(super, super->current_vol); |
a965f303 | 642 | struct imsm_map *map = get_imsm_map(dev, 0); |
bf5a934a DW |
643 | |
644 | info->container_member = super->current_vol; | |
645 | info->array.raid_disks = map->num_members; | |
646 | info->array.level = get_imsm_raid_level(map); | |
647 | info->array.layout = imsm_level_to_layout(info->array.level); | |
648 | info->array.md_minor = -1; | |
649 | info->array.ctime = 0; | |
650 | info->array.utime = 0; | |
301406c9 DW |
651 | info->array.chunk_size = __le16_to_cpu(map->blocks_per_strip) << 9; |
652 | info->array.state = !dev->vol.dirty; | |
653 | ||
654 | info->disk.major = 0; | |
655 | info->disk.minor = 0; | |
bf5a934a DW |
656 | |
657 | info->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
658 | info->component_size = __le32_to_cpu(map->blocks_per_member); | |
301406c9 | 659 | memset(info->uuid, 0, sizeof(info->uuid)); |
bf5a934a | 660 | |
301406c9 DW |
661 | if (map->map_state == IMSM_T_STATE_UNINITIALIZED || |
662 | dev->vol.dirty || dev->vol.migr_state) | |
663 | info->resync_start = 0; | |
664 | else | |
665 | info->resync_start = ~0ULL; | |
666 | ||
667 | strncpy(info->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN); | |
668 | info->name[MAX_RAID_SERIAL_LEN] = 0; | |
bf5a934a DW |
669 | |
670 | sprintf(info->text_version, "/%s/%d", | |
671 | devnum2devname(st->container_dev), | |
672 | info->container_member); | |
a67dd8cc | 673 | info->safe_mode_delay = 4000; /* 4 secs like the Matrix driver */ |
bf5a934a DW |
674 | } |
675 | ||
676 | ||
4f5bc454 DW |
677 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info) |
678 | { | |
679 | struct intel_super *super = st->sb; | |
4f5bc454 DW |
680 | struct imsm_disk *disk; |
681 | __u32 s; | |
4f5bc454 | 682 | |
bf5a934a DW |
683 | if (super->current_vol >= 0) { |
684 | getinfo_super_imsm_volume(st, info); | |
685 | return; | |
686 | } | |
d23fe947 DW |
687 | |
688 | /* Set raid_disks to zero so that Assemble will always pull in valid | |
689 | * spares | |
690 | */ | |
691 | info->array.raid_disks = 0; | |
cdddbdbc DW |
692 | info->array.level = LEVEL_CONTAINER; |
693 | info->array.layout = 0; | |
694 | info->array.md_minor = -1; | |
c2c087e6 | 695 | info->array.ctime = 0; /* N/A for imsm */ |
cdddbdbc DW |
696 | info->array.utime = 0; |
697 | info->array.chunk_size = 0; | |
698 | ||
699 | info->disk.major = 0; | |
700 | info->disk.minor = 0; | |
cdddbdbc | 701 | info->disk.raid_disk = -1; |
c2c087e6 DW |
702 | info->reshape_active = 0; |
703 | strcpy(info->text_version, "imsm"); | |
a67dd8cc | 704 | info->safe_mode_delay = 0; |
c2c087e6 DW |
705 | info->disk.number = -1; |
706 | info->disk.state = 0; | |
707 | ||
4a04ec6c | 708 | if (super->disks) { |
b9f594fe | 709 | disk = &super->disks->disk; |
4a04ec6c DW |
710 | info->disk.number = super->disks->index; |
711 | info->disk.raid_disk = super->disks->index; | |
bf5a934a DW |
712 | info->data_offset = __le32_to_cpu(disk->total_blocks) - |
713 | (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
714 | info->component_size = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
4a04ec6c DW |
715 | s = __le32_to_cpu(disk->status); |
716 | info->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0; | |
717 | info->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0; | |
718 | info->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0; | |
cdddbdbc | 719 | } |
cdddbdbc DW |
720 | } |
721 | ||
cdddbdbc DW |
722 | static int update_super_imsm(struct supertype *st, struct mdinfo *info, |
723 | char *update, char *devname, int verbose, | |
724 | int uuid_set, char *homehost) | |
725 | { | |
f352c545 DW |
726 | /* FIXME */ |
727 | ||
728 | /* For 'assemble' and 'force' we need to return non-zero if any | |
729 | * change was made. For others, the return value is ignored. | |
730 | * Update options are: | |
731 | * force-one : This device looks a bit old but needs to be included, | |
732 | * update age info appropriately. | |
733 | * assemble: clear any 'faulty' flag to allow this device to | |
734 | * be assembled. | |
735 | * force-array: Array is degraded but being forced, mark it clean | |
736 | * if that will be needed to assemble it. | |
737 | * | |
738 | * newdev: not used ???? | |
739 | * grow: Array has gained a new device - this is currently for | |
740 | * linear only | |
741 | * resync: mark as dirty so a resync will happen. | |
742 | * name: update the name - preserving the homehost | |
743 | * | |
744 | * Following are not relevant for this imsm: | |
745 | * sparc2.2 : update from old dodgey metadata | |
746 | * super-minor: change the preferred_minor number | |
747 | * summaries: update redundant counters. | |
748 | * uuid: Change the uuid of the array to match watch is given | |
749 | * homehost: update the recorded homehost | |
750 | * _reshape_progress: record new reshape_progress position. | |
751 | */ | |
752 | int rv = 0; | |
753 | //struct intel_super *super = st->sb; | |
754 | //struct imsm_super *mpb = super->mpb; | |
755 | ||
756 | if (strcmp(update, "grow") == 0) { | |
757 | } | |
758 | if (strcmp(update, "resync") == 0) { | |
759 | /* dev->vol.dirty = 1; */ | |
760 | } | |
761 | ||
762 | /* IMSM has no concept of UUID or homehost */ | |
763 | ||
764 | return rv; | |
cdddbdbc DW |
765 | } |
766 | ||
c2c087e6 | 767 | static size_t disks_to_mpb_size(int disks) |
cdddbdbc | 768 | { |
c2c087e6 | 769 | size_t size; |
cdddbdbc | 770 | |
c2c087e6 DW |
771 | size = sizeof(struct imsm_super); |
772 | size += (disks - 1) * sizeof(struct imsm_disk); | |
773 | size += 2 * sizeof(struct imsm_dev); | |
774 | /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */ | |
775 | size += (4 - 2) * sizeof(struct imsm_map); | |
776 | /* 4 possible disk_ord_tbl's */ | |
777 | size += 4 * (disks - 1) * sizeof(__u32); | |
778 | ||
779 | return size; | |
780 | } | |
781 | ||
782 | static __u64 avail_size_imsm(struct supertype *st, __u64 devsize) | |
783 | { | |
784 | if (devsize < (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS)) | |
785 | return 0; | |
786 | ||
787 | return devsize - (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
cdddbdbc DW |
788 | } |
789 | ||
790 | static int compare_super_imsm(struct supertype *st, struct supertype *tst) | |
791 | { | |
792 | /* | |
793 | * return: | |
794 | * 0 same, or first was empty, and second was copied | |
795 | * 1 second had wrong number | |
796 | * 2 wrong uuid | |
797 | * 3 wrong other info | |
798 | */ | |
799 | struct intel_super *first = st->sb; | |
800 | struct intel_super *sec = tst->sb; | |
801 | ||
802 | if (!first) { | |
803 | st->sb = tst->sb; | |
804 | tst->sb = NULL; | |
805 | return 0; | |
806 | } | |
807 | ||
949c47a0 | 808 | if (memcmp(first->anchor->sig, sec->anchor->sig, MAX_SIGNATURE_LENGTH) != 0) |
cdddbdbc | 809 | return 3; |
d23fe947 DW |
810 | |
811 | /* if an anchor does not have num_raid_devs set then it is a free | |
812 | * floating spare | |
813 | */ | |
814 | if (first->anchor->num_raid_devs > 0 && | |
815 | sec->anchor->num_raid_devs > 0) { | |
816 | if (first->anchor->family_num != sec->anchor->family_num) | |
817 | return 3; | |
d23fe947 | 818 | } |
cdddbdbc | 819 | |
3e372e5a DW |
820 | /* if 'first' is a spare promote it to a populated mpb with sec's |
821 | * family number | |
822 | */ | |
823 | if (first->anchor->num_raid_devs == 0 && | |
824 | sec->anchor->num_raid_devs > 0) { | |
825 | first->anchor->num_raid_devs = sec->anchor->num_raid_devs; | |
826 | first->anchor->family_num = sec->anchor->family_num; | |
827 | } | |
828 | ||
cdddbdbc DW |
829 | return 0; |
830 | } | |
831 | ||
0030e8d6 DW |
832 | static void fd2devname(int fd, char *name) |
833 | { | |
834 | struct stat st; | |
835 | char path[256]; | |
836 | char dname[100]; | |
837 | char *nm; | |
838 | int rv; | |
839 | ||
840 | name[0] = '\0'; | |
841 | if (fstat(fd, &st) != 0) | |
842 | return; | |
843 | sprintf(path, "/sys/dev/block/%d:%d", | |
844 | major(st.st_rdev), minor(st.st_rdev)); | |
845 | ||
846 | rv = readlink(path, dname, sizeof(dname)); | |
847 | if (rv <= 0) | |
848 | return; | |
849 | ||
850 | dname[rv] = '\0'; | |
851 | nm = strrchr(dname, '/'); | |
852 | nm++; | |
853 | snprintf(name, MAX_RAID_SERIAL_LEN, "/dev/%s", nm); | |
854 | } | |
855 | ||
856 | ||
cdddbdbc DW |
857 | extern int scsi_get_serial(int fd, void *buf, size_t buf_len); |
858 | ||
859 | static int imsm_read_serial(int fd, char *devname, | |
860 | __u8 serial[MAX_RAID_SERIAL_LEN]) | |
861 | { | |
862 | unsigned char scsi_serial[255]; | |
cdddbdbc DW |
863 | int rv; |
864 | int rsp_len; | |
1f24f035 DW |
865 | int len; |
866 | char *c, *rsp_buf; | |
cdddbdbc DW |
867 | |
868 | memset(scsi_serial, 0, sizeof(scsi_serial)); | |
cdddbdbc | 869 | |
f9ba0ff1 DW |
870 | rv = scsi_get_serial(fd, scsi_serial, sizeof(scsi_serial)); |
871 | ||
872 | if (rv && imsm_env_devname_as_serial()) { | |
873 | memset(serial, 0, MAX_RAID_SERIAL_LEN); | |
874 | fd2devname(fd, (char *) serial); | |
0030e8d6 DW |
875 | return 0; |
876 | } | |
877 | ||
cdddbdbc DW |
878 | if (rv != 0) { |
879 | if (devname) | |
880 | fprintf(stderr, | |
881 | Name ": Failed to retrieve serial for %s\n", | |
882 | devname); | |
883 | return rv; | |
884 | } | |
885 | ||
1f24f035 | 886 | /* trim whitespace */ |
cdddbdbc | 887 | rsp_len = scsi_serial[3]; |
1f24f035 DW |
888 | rsp_buf = (char *) &scsi_serial[4]; |
889 | c = rsp_buf; | |
890 | while (isspace(*c)) | |
891 | c++; | |
892 | if (c + MAX_RAID_SERIAL_LEN > rsp_buf + rsp_len) | |
893 | len = rsp_len - (c - rsp_buf); | |
894 | else | |
895 | len = MAX_RAID_SERIAL_LEN; | |
896 | memcpy(serial, c, len); | |
897 | c = (char *) &serial[len - 1]; | |
898 | while (isspace(*c) || *c == '\0') | |
899 | *c-- = '\0'; | |
cdddbdbc DW |
900 | |
901 | return 0; | |
902 | } | |
903 | ||
1f24f035 DW |
904 | static int serialcmp(__u8 *s1, __u8 *s2) |
905 | { | |
906 | return strncmp((char *) s1, (char *) s2, MAX_RAID_SERIAL_LEN); | |
907 | } | |
908 | ||
909 | static void serialcpy(__u8 *dest, __u8 *src) | |
910 | { | |
911 | strncpy((char *) dest, (char *) src, MAX_RAID_SERIAL_LEN); | |
912 | } | |
913 | ||
cdddbdbc DW |
914 | static int |
915 | load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd) | |
916 | { | |
cdddbdbc DW |
917 | struct dl *dl; |
918 | struct stat stb; | |
cdddbdbc DW |
919 | int rv; |
920 | int i; | |
d23fe947 DW |
921 | int alloc = 1; |
922 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
923 | ||
924 | rv = imsm_read_serial(fd, devname, serial); | |
925 | ||
926 | if (rv != 0) | |
927 | return 2; | |
928 | ||
929 | /* check if this is a disk we have seen before. it may be a spare in | |
930 | * super->disks while the current anchor believes it is a raid member, | |
931 | * check if we need to update dl->index | |
932 | */ | |
933 | for (dl = super->disks; dl; dl = dl->next) | |
1f24f035 | 934 | if (serialcmp(dl->serial, serial) == 0) |
d23fe947 DW |
935 | break; |
936 | ||
937 | if (!dl) | |
938 | dl = malloc(sizeof(*dl)); | |
939 | else | |
940 | alloc = 0; | |
cdddbdbc | 941 | |
b9f594fe | 942 | if (!dl) { |
cdddbdbc DW |
943 | if (devname) |
944 | fprintf(stderr, | |
945 | Name ": failed to allocate disk buffer for %s\n", | |
946 | devname); | |
947 | return 2; | |
948 | } | |
cdddbdbc | 949 | |
d23fe947 DW |
950 | if (alloc) { |
951 | fstat(fd, &stb); | |
952 | dl->major = major(stb.st_rdev); | |
953 | dl->minor = minor(stb.st_rdev); | |
954 | dl->next = super->disks; | |
955 | dl->fd = keep_fd ? fd : -1; | |
956 | dl->devname = devname ? strdup(devname) : NULL; | |
1f24f035 | 957 | serialcpy(dl->serial, serial); |
8796fdc4 | 958 | dl->index = -2; |
d23fe947 DW |
959 | } else if (keep_fd) { |
960 | close(dl->fd); | |
961 | dl->fd = fd; | |
962 | } | |
cdddbdbc | 963 | |
d23fe947 | 964 | /* look up this disk's index in the current anchor */ |
949c47a0 DW |
965 | for (i = 0; i < super->anchor->num_disks; i++) { |
966 | struct imsm_disk *disk_iter; | |
967 | ||
968 | disk_iter = __get_imsm_disk(super->anchor, i); | |
cdddbdbc | 969 | |
1f24f035 | 970 | if (serialcmp(disk_iter->serial, dl->serial) == 0) { |
d23fe947 DW |
971 | __u32 status; |
972 | ||
b9f594fe | 973 | dl->disk = *disk_iter; |
d23fe947 DW |
974 | status = __le32_to_cpu(dl->disk.status); |
975 | /* only set index on disks that are a member of a | |
976 | * populated contianer, i.e. one with raid_devs | |
977 | */ | |
6c386dd3 DW |
978 | if (status & FAILED_DISK) |
979 | dl->index = -2; | |
980 | else if (status & SPARE_DISK) | |
d23fe947 DW |
981 | dl->index = -1; |
982 | else | |
983 | dl->index = i; | |
8796fdc4 | 984 | |
cdddbdbc | 985 | break; |
949c47a0 | 986 | } |
cdddbdbc DW |
987 | } |
988 | ||
d23fe947 DW |
989 | if (alloc) |
990 | super->disks = dl; | |
6c386dd3 | 991 | |
949c47a0 DW |
992 | return 0; |
993 | } | |
994 | ||
995 | static void imsm_copy_dev(struct imsm_dev *dest, struct imsm_dev *src) | |
996 | { | |
3393c6af DW |
997 | memcpy(dest, src, sizeof_imsm_dev(src, 0)); |
998 | } | |
999 | ||
0e600426 | 1000 | #ifndef MDASSEMBLE |
0c046afd DW |
1001 | /* When migrating map0 contains the 'destination' state while map1 |
1002 | * contains the current state. When not migrating map0 contains the | |
1003 | * current state. This routine assumes that map[0].map_state is set to | |
1004 | * the current array state before being called. | |
1005 | * | |
1006 | * Migration is indicated by one of the following states | |
1007 | * 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed) | |
1008 | * 2/ Initialize (migr_state=1 migr_type=0 map0state=normal | |
1009 | * map1state=unitialized) | |
1010 | * 3/ Verify (Resync) (migr_state=1 migr_type=1 map0state=normal | |
1011 | * map1state=normal) | |
1012 | * 4/ Rebuild (migr_state=1 migr_type=1 map0state=normal | |
1013 | * map1state=degraded) | |
1014 | */ | |
1015 | static void migrate(struct imsm_dev *dev, __u8 to_state, int rebuild_resync) | |
3393c6af | 1016 | { |
0c046afd | 1017 | struct imsm_map *dest; |
3393c6af DW |
1018 | struct imsm_map *src = get_imsm_map(dev, 0); |
1019 | ||
0c046afd DW |
1020 | dev->vol.migr_state = 1; |
1021 | dev->vol.migr_type = rebuild_resync; | |
1022 | dest = get_imsm_map(dev, 1); | |
1023 | ||
3393c6af | 1024 | memcpy(dest, src, sizeof_imsm_map(src)); |
0c046afd | 1025 | src->map_state = to_state; |
949c47a0 | 1026 | } |
0e600426 | 1027 | #endif |
949c47a0 DW |
1028 | |
1029 | static int parse_raid_devices(struct intel_super *super) | |
1030 | { | |
1031 | int i; | |
1032 | struct imsm_dev *dev_new; | |
4d7b1503 DW |
1033 | size_t len, len_migr; |
1034 | size_t space_needed = 0; | |
1035 | struct imsm_super *mpb = super->anchor; | |
949c47a0 DW |
1036 | |
1037 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
1038 | struct imsm_dev *dev_iter = __get_imsm_dev(super->anchor, i); | |
1039 | ||
4d7b1503 DW |
1040 | len = sizeof_imsm_dev(dev_iter, 0); |
1041 | len_migr = sizeof_imsm_dev(dev_iter, 1); | |
1042 | if (len_migr > len) | |
1043 | space_needed += len_migr - len; | |
1044 | ||
1045 | dev_new = malloc(len_migr); | |
949c47a0 DW |
1046 | if (!dev_new) |
1047 | return 1; | |
1048 | imsm_copy_dev(dev_new, dev_iter); | |
1049 | super->dev_tbl[i] = dev_new; | |
1050 | } | |
cdddbdbc | 1051 | |
4d7b1503 DW |
1052 | /* ensure that super->buf is large enough when all raid devices |
1053 | * are migrating | |
1054 | */ | |
1055 | if (__le32_to_cpu(mpb->mpb_size) + space_needed > super->len) { | |
1056 | void *buf; | |
1057 | ||
1058 | len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + space_needed, 512); | |
1059 | if (posix_memalign(&buf, 512, len) != 0) | |
1060 | return 1; | |
1061 | ||
1062 | memcpy(buf, super->buf, len); | |
1063 | free(super->buf); | |
1064 | super->buf = buf; | |
1065 | super->len = len; | |
1066 | } | |
1067 | ||
cdddbdbc DW |
1068 | return 0; |
1069 | } | |
1070 | ||
604b746f JD |
1071 | /* retrieve a pointer to the bbm log which starts after all raid devices */ |
1072 | struct bbm_log *__get_imsm_bbm_log(struct imsm_super *mpb) | |
1073 | { | |
1074 | void *ptr = NULL; | |
1075 | ||
1076 | if (__le32_to_cpu(mpb->bbm_log_size)) { | |
1077 | ptr = mpb; | |
1078 | ptr += mpb->mpb_size - __le32_to_cpu(mpb->bbm_log_size); | |
1079 | } | |
1080 | ||
1081 | return ptr; | |
1082 | } | |
1083 | ||
d23fe947 | 1084 | static void __free_imsm(struct intel_super *super, int free_disks); |
9ca2c81c | 1085 | |
cdddbdbc DW |
1086 | /* load_imsm_mpb - read matrix metadata |
1087 | * allocates super->mpb to be freed by free_super | |
1088 | */ | |
1089 | static int load_imsm_mpb(int fd, struct intel_super *super, char *devname) | |
1090 | { | |
1091 | unsigned long long dsize; | |
cdddbdbc DW |
1092 | unsigned long long sectors; |
1093 | struct stat; | |
6416d527 | 1094 | struct imsm_super *anchor; |
cdddbdbc | 1095 | __u32 check_sum; |
949c47a0 | 1096 | int rc; |
cdddbdbc | 1097 | |
cdddbdbc DW |
1098 | get_dev_size(fd, NULL, &dsize); |
1099 | ||
1100 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) { | |
1101 | if (devname) | |
1102 | fprintf(stderr, | |
1103 | Name ": Cannot seek to anchor block on %s: %s\n", | |
1104 | devname, strerror(errno)); | |
1105 | return 1; | |
1106 | } | |
1107 | ||
949c47a0 | 1108 | if (posix_memalign((void**)&anchor, 512, 512) != 0) { |
ad97895e DW |
1109 | if (devname) |
1110 | fprintf(stderr, | |
1111 | Name ": Failed to allocate imsm anchor buffer" | |
1112 | " on %s\n", devname); | |
1113 | return 1; | |
1114 | } | |
949c47a0 | 1115 | if (read(fd, anchor, 512) != 512) { |
cdddbdbc DW |
1116 | if (devname) |
1117 | fprintf(stderr, | |
1118 | Name ": Cannot read anchor block on %s: %s\n", | |
1119 | devname, strerror(errno)); | |
6416d527 | 1120 | free(anchor); |
cdddbdbc DW |
1121 | return 1; |
1122 | } | |
1123 | ||
6416d527 | 1124 | if (strncmp((char *) anchor->sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) { |
cdddbdbc DW |
1125 | if (devname) |
1126 | fprintf(stderr, | |
1127 | Name ": no IMSM anchor on %s\n", devname); | |
6416d527 | 1128 | free(anchor); |
cdddbdbc DW |
1129 | return 2; |
1130 | } | |
1131 | ||
d23fe947 | 1132 | __free_imsm(super, 0); |
949c47a0 DW |
1133 | super->len = ROUND_UP(anchor->mpb_size, 512); |
1134 | if (posix_memalign(&super->buf, 512, super->len) != 0) { | |
cdddbdbc DW |
1135 | if (devname) |
1136 | fprintf(stderr, | |
1137 | Name ": unable to allocate %zu byte mpb buffer\n", | |
949c47a0 | 1138 | super->len); |
6416d527 | 1139 | free(anchor); |
cdddbdbc DW |
1140 | return 2; |
1141 | } | |
949c47a0 | 1142 | memcpy(super->buf, anchor, 512); |
cdddbdbc | 1143 | |
6416d527 NB |
1144 | sectors = mpb_sectors(anchor) - 1; |
1145 | free(anchor); | |
949c47a0 DW |
1146 | if (!sectors) { |
1147 | rc = load_imsm_disk(fd, super, devname, 0); | |
1148 | if (rc == 0) | |
1149 | rc = parse_raid_devices(super); | |
1150 | return rc; | |
1151 | } | |
cdddbdbc DW |
1152 | |
1153 | /* read the extended mpb */ | |
1154 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) { | |
1155 | if (devname) | |
1156 | fprintf(stderr, | |
1157 | Name ": Cannot seek to extended mpb on %s: %s\n", | |
1158 | devname, strerror(errno)); | |
1159 | return 1; | |
1160 | } | |
1161 | ||
949c47a0 | 1162 | if (read(fd, super->buf + 512, super->len - 512) != super->len - 512) { |
cdddbdbc DW |
1163 | if (devname) |
1164 | fprintf(stderr, | |
1165 | Name ": Cannot read extended mpb on %s: %s\n", | |
1166 | devname, strerror(errno)); | |
1167 | return 2; | |
1168 | } | |
1169 | ||
949c47a0 DW |
1170 | check_sum = __gen_imsm_checksum(super->anchor); |
1171 | if (check_sum != __le32_to_cpu(super->anchor->check_sum)) { | |
cdddbdbc DW |
1172 | if (devname) |
1173 | fprintf(stderr, | |
1174 | Name ": IMSM checksum %x != %x on %s\n", | |
949c47a0 | 1175 | check_sum, __le32_to_cpu(super->anchor->check_sum), |
cdddbdbc DW |
1176 | devname); |
1177 | return 2; | |
1178 | } | |
1179 | ||
604b746f JD |
1180 | /* FIXME the BBM log is disk specific so we cannot use this global |
1181 | * buffer for all disks. Ok for now since we only look at the global | |
1182 | * bbm_log_size parameter to gate assembly | |
1183 | */ | |
1184 | super->bbm_log = __get_imsm_bbm_log(super->anchor); | |
1185 | ||
949c47a0 DW |
1186 | rc = load_imsm_disk(fd, super, devname, 0); |
1187 | if (rc == 0) | |
1188 | rc = parse_raid_devices(super); | |
4d7b1503 | 1189 | |
949c47a0 | 1190 | return rc; |
cdddbdbc DW |
1191 | } |
1192 | ||
ae6aad82 DW |
1193 | static void __free_imsm_disk(struct dl *d) |
1194 | { | |
1195 | if (d->fd >= 0) | |
1196 | close(d->fd); | |
1197 | if (d->devname) | |
1198 | free(d->devname); | |
1199 | free(d); | |
1200 | ||
1201 | } | |
cdddbdbc DW |
1202 | static void free_imsm_disks(struct intel_super *super) |
1203 | { | |
1204 | while (super->disks) { | |
1205 | struct dl *d = super->disks; | |
1206 | ||
1207 | super->disks = d->next; | |
ae6aad82 | 1208 | __free_imsm_disk(d); |
cdddbdbc DW |
1209 | } |
1210 | } | |
1211 | ||
9ca2c81c | 1212 | /* free all the pieces hanging off of a super pointer */ |
d23fe947 | 1213 | static void __free_imsm(struct intel_super *super, int free_disks) |
cdddbdbc | 1214 | { |
949c47a0 DW |
1215 | int i; |
1216 | ||
9ca2c81c | 1217 | if (super->buf) { |
949c47a0 | 1218 | free(super->buf); |
9ca2c81c DW |
1219 | super->buf = NULL; |
1220 | } | |
d23fe947 DW |
1221 | if (free_disks) |
1222 | free_imsm_disks(super); | |
949c47a0 | 1223 | for (i = 0; i < IMSM_MAX_RAID_DEVS; i++) |
9ca2c81c | 1224 | if (super->dev_tbl[i]) { |
949c47a0 | 1225 | free(super->dev_tbl[i]); |
9ca2c81c DW |
1226 | super->dev_tbl[i] = NULL; |
1227 | } | |
cdddbdbc DW |
1228 | } |
1229 | ||
9ca2c81c DW |
1230 | static void free_imsm(struct intel_super *super) |
1231 | { | |
d23fe947 | 1232 | __free_imsm(super, 1); |
9ca2c81c DW |
1233 | free(super); |
1234 | } | |
cdddbdbc DW |
1235 | |
1236 | static void free_super_imsm(struct supertype *st) | |
1237 | { | |
1238 | struct intel_super *super = st->sb; | |
1239 | ||
1240 | if (!super) | |
1241 | return; | |
1242 | ||
1243 | free_imsm(super); | |
1244 | st->sb = NULL; | |
1245 | } | |
1246 | ||
c2c087e6 DW |
1247 | static struct intel_super *alloc_super(int creating_imsm) |
1248 | { | |
1249 | struct intel_super *super = malloc(sizeof(*super)); | |
1250 | ||
1251 | if (super) { | |
1252 | memset(super, 0, sizeof(*super)); | |
1253 | super->creating_imsm = creating_imsm; | |
bf5a934a | 1254 | super->current_vol = -1; |
c2c087e6 DW |
1255 | } |
1256 | ||
1257 | return super; | |
1258 | } | |
1259 | ||
cdddbdbc DW |
1260 | #ifndef MDASSEMBLE |
1261 | static int load_super_imsm_all(struct supertype *st, int fd, void **sbp, | |
1262 | char *devname, int keep_fd) | |
1263 | { | |
1264 | struct mdinfo *sra; | |
1265 | struct intel_super *super; | |
1266 | struct mdinfo *sd, *best = NULL; | |
1267 | __u32 bestgen = 0; | |
1268 | __u32 gen; | |
1269 | char nm[20]; | |
1270 | int dfd; | |
1271 | int rv; | |
1272 | ||
1273 | /* check if this disk is a member of an active array */ | |
1274 | sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE); | |
1275 | if (!sra) | |
1276 | return 1; | |
1277 | ||
1278 | if (sra->array.major_version != -1 || | |
1279 | sra->array.minor_version != -2 || | |
1280 | strcmp(sra->text_version, "imsm") != 0) | |
1281 | return 1; | |
1282 | ||
c2c087e6 | 1283 | super = alloc_super(0); |
cdddbdbc DW |
1284 | if (!super) |
1285 | return 1; | |
1286 | ||
d23fe947 | 1287 | /* find the most up to date disk in this array, skipping spares */ |
cdddbdbc DW |
1288 | for (sd = sra->devs; sd; sd = sd->next) { |
1289 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
1290 | dfd = dev_open(nm, keep_fd ? O_RDWR : O_RDONLY); | |
1291 | if (!dfd) { | |
1292 | free_imsm(super); | |
1293 | return 2; | |
1294 | } | |
1295 | rv = load_imsm_mpb(dfd, super, NULL); | |
1296 | if (!keep_fd) | |
1297 | close(dfd); | |
1298 | if (rv == 0) { | |
d23fe947 DW |
1299 | if (super->anchor->num_raid_devs == 0) |
1300 | gen = 0; | |
1301 | else | |
1302 | gen = __le32_to_cpu(super->anchor->generation_num); | |
cdddbdbc DW |
1303 | if (!best || gen > bestgen) { |
1304 | bestgen = gen; | |
1305 | best = sd; | |
1306 | } | |
1307 | } else { | |
1308 | free_imsm(super); | |
1309 | return 2; | |
1310 | } | |
1311 | } | |
1312 | ||
1313 | if (!best) { | |
1314 | free_imsm(super); | |
1315 | return 1; | |
1316 | } | |
1317 | ||
1318 | /* load the most up to date anchor */ | |
1319 | sprintf(nm, "%d:%d", best->disk.major, best->disk.minor); | |
1320 | dfd = dev_open(nm, O_RDONLY); | |
1321 | if (!dfd) { | |
1322 | free_imsm(super); | |
1323 | return 1; | |
1324 | } | |
1325 | rv = load_imsm_mpb(dfd, super, NULL); | |
1326 | close(dfd); | |
1327 | if (rv != 0) { | |
1328 | free_imsm(super); | |
1329 | return 2; | |
1330 | } | |
1331 | ||
d23fe947 | 1332 | /* re-parse the disk list with the current anchor */ |
cdddbdbc DW |
1333 | for (sd = sra->devs ; sd ; sd = sd->next) { |
1334 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
1335 | dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY); | |
1336 | if (!dfd) { | |
1337 | free_imsm(super); | |
1338 | return 2; | |
1339 | } | |
1340 | load_imsm_disk(dfd, super, NULL, keep_fd); | |
1341 | if (!keep_fd) | |
1342 | close(dfd); | |
1343 | } | |
1344 | ||
f7e7067b | 1345 | if (st->subarray[0]) { |
949c47a0 | 1346 | if (atoi(st->subarray) <= super->anchor->num_raid_devs) |
bf5a934a DW |
1347 | super->current_vol = atoi(st->subarray); |
1348 | else | |
1349 | return 1; | |
f7e7067b NB |
1350 | } |
1351 | ||
cdddbdbc | 1352 | *sbp = super; |
43dad3d6 | 1353 | st->container_dev = fd2devnum(fd); |
cdddbdbc | 1354 | if (st->ss == NULL) { |
bf5a934a | 1355 | st->ss = &super_imsm; |
cdddbdbc DW |
1356 | st->minor_version = 0; |
1357 | st->max_devs = IMSM_MAX_DEVICES; | |
1358 | } | |
1359 | ||
1360 | return 0; | |
1361 | } | |
1362 | #endif | |
1363 | ||
1364 | static int load_super_imsm(struct supertype *st, int fd, char *devname) | |
1365 | { | |
1366 | struct intel_super *super; | |
1367 | int rv; | |
1368 | ||
1369 | #ifndef MDASSEMBLE | |
3dbccbcf | 1370 | if (load_super_imsm_all(st, fd, &st->sb, devname, 1) == 0) |
cdddbdbc DW |
1371 | return 0; |
1372 | #endif | |
f7e7067b NB |
1373 | if (st->subarray[0]) |
1374 | return 1; /* FIXME */ | |
cdddbdbc | 1375 | |
c2c087e6 | 1376 | super = alloc_super(0); |
cdddbdbc DW |
1377 | if (!super) { |
1378 | fprintf(stderr, | |
1379 | Name ": malloc of %zu failed.\n", | |
1380 | sizeof(*super)); | |
1381 | return 1; | |
1382 | } | |
1383 | ||
1384 | rv = load_imsm_mpb(fd, super, devname); | |
1385 | ||
1386 | if (rv) { | |
1387 | if (devname) | |
1388 | fprintf(stderr, | |
1389 | Name ": Failed to load all information " | |
1390 | "sections on %s\n", devname); | |
1391 | free_imsm(super); | |
1392 | return rv; | |
1393 | } | |
1394 | ||
1395 | st->sb = super; | |
1396 | if (st->ss == NULL) { | |
1397 | st->ss = &super_imsm; | |
1398 | st->minor_version = 0; | |
1399 | st->max_devs = IMSM_MAX_DEVICES; | |
1400 | } | |
1401 | ||
1402 | return 0; | |
1403 | } | |
1404 | ||
ef6ffade DW |
1405 | static __u16 info_to_blocks_per_strip(mdu_array_info_t *info) |
1406 | { | |
1407 | if (info->level == 1) | |
1408 | return 128; | |
1409 | return info->chunk_size >> 9; | |
1410 | } | |
1411 | ||
1412 | static __u32 info_to_num_data_stripes(mdu_array_info_t *info) | |
1413 | { | |
1414 | __u32 num_stripes; | |
1415 | ||
1416 | num_stripes = (info->size * 2) / info_to_blocks_per_strip(info); | |
1417 | if (info->level == 1) | |
1418 | num_stripes /= 2; | |
1419 | ||
1420 | return num_stripes; | |
1421 | } | |
1422 | ||
fcfd9599 DW |
1423 | static __u32 info_to_blocks_per_member(mdu_array_info_t *info) |
1424 | { | |
1425 | return (info->size * 2) & ~(info_to_blocks_per_strip(info) - 1); | |
1426 | } | |
1427 | ||
8b353278 DW |
1428 | static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info, |
1429 | unsigned long long size, char *name, | |
1430 | char *homehost, int *uuid) | |
cdddbdbc | 1431 | { |
c2c087e6 DW |
1432 | /* We are creating a volume inside a pre-existing container. |
1433 | * so st->sb is already set. | |
1434 | */ | |
1435 | struct intel_super *super = st->sb; | |
949c47a0 | 1436 | struct imsm_super *mpb = super->anchor; |
c2c087e6 DW |
1437 | struct imsm_dev *dev; |
1438 | struct imsm_vol *vol; | |
1439 | struct imsm_map *map; | |
1440 | int idx = mpb->num_raid_devs; | |
1441 | int i; | |
1442 | unsigned long long array_blocks; | |
c2c087e6 | 1443 | __u32 offset = 0; |
2c092cad | 1444 | size_t size_old, size_new; |
cdddbdbc | 1445 | |
c2c087e6 DW |
1446 | if (mpb->num_raid_devs >= 2) { |
1447 | fprintf(stderr, Name": This imsm-container already has the " | |
1448 | "maximum of 2 volumes\n"); | |
1449 | return 0; | |
1450 | } | |
1451 | ||
2c092cad DW |
1452 | /* ensure the mpb is large enough for the new data */ |
1453 | size_old = __le32_to_cpu(mpb->mpb_size); | |
1454 | size_new = disks_to_mpb_size(info->nr_disks); | |
1455 | if (size_new > size_old) { | |
1456 | void *mpb_new; | |
1457 | size_t size_round = ROUND_UP(size_new, 512); | |
1458 | ||
1459 | if (posix_memalign(&mpb_new, 512, size_round) != 0) { | |
1460 | fprintf(stderr, Name": could not allocate new mpb\n"); | |
1461 | return 0; | |
1462 | } | |
1463 | memcpy(mpb_new, mpb, size_old); | |
1464 | free(mpb); | |
1465 | mpb = mpb_new; | |
949c47a0 | 1466 | super->anchor = mpb_new; |
2c092cad DW |
1467 | mpb->mpb_size = __cpu_to_le32(size_new); |
1468 | memset(mpb_new + size_old, 0, size_round - size_old); | |
1469 | } | |
bf5a934a | 1470 | super->current_vol = idx; |
d23fe947 DW |
1471 | /* when creating the first raid device in this container set num_disks |
1472 | * to zero, i.e. delete this spare and add raid member devices in | |
1473 | * add_to_super_imsm_volume() | |
1474 | */ | |
1475 | if (super->current_vol == 0) | |
1476 | mpb->num_disks = 0; | |
bf5a934a | 1477 | sprintf(st->subarray, "%d", idx); |
949c47a0 DW |
1478 | dev = malloc(sizeof(*dev) + sizeof(__u32) * (info->raid_disks - 1)); |
1479 | if (!dev) { | |
1480 | fprintf(stderr, Name": could not allocate raid device\n"); | |
1481 | return 0; | |
1482 | } | |
c2c087e6 DW |
1483 | strncpy((char *) dev->volume, name, MAX_RAID_SERIAL_LEN); |
1484 | array_blocks = calc_array_size(info->level, info->raid_disks, | |
1485 | info->layout, info->chunk_size, | |
1486 | info->size*2); | |
1487 | dev->size_low = __cpu_to_le32((__u32) array_blocks); | |
1488 | dev->size_high = __cpu_to_le32((__u32) (array_blocks >> 32)); | |
1489 | dev->status = __cpu_to_le32(0); | |
1490 | dev->reserved_blocks = __cpu_to_le32(0); | |
1491 | vol = &dev->vol; | |
1492 | vol->migr_state = 0; | |
1493 | vol->migr_type = 0; | |
1494 | vol->dirty = 0; | |
1495 | for (i = 0; i < idx; i++) { | |
949c47a0 | 1496 | struct imsm_dev *prev = get_imsm_dev(super, i); |
a965f303 | 1497 | struct imsm_map *pmap = get_imsm_map(prev, 0); |
c2c087e6 DW |
1498 | |
1499 | offset += __le32_to_cpu(pmap->blocks_per_member); | |
1500 | offset += IMSM_RESERVED_SECTORS; | |
1501 | } | |
a965f303 | 1502 | map = get_imsm_map(dev, 0); |
c2c087e6 | 1503 | map->pba_of_lba0 = __cpu_to_le32(offset); |
fcfd9599 | 1504 | map->blocks_per_member = __cpu_to_le32(info_to_blocks_per_member(info)); |
ef6ffade DW |
1505 | map->blocks_per_strip = __cpu_to_le16(info_to_blocks_per_strip(info)); |
1506 | map->num_data_stripes = __cpu_to_le32(info_to_num_data_stripes(info)); | |
c2c087e6 DW |
1507 | map->map_state = info->level ? IMSM_T_STATE_UNINITIALIZED : |
1508 | IMSM_T_STATE_NORMAL; | |
ef6ffade DW |
1509 | |
1510 | if (info->level == 1 && info->raid_disks > 2) { | |
1511 | fprintf(stderr, Name": imsm does not support more than 2 disks" | |
1512 | "in a raid1 volume\n"); | |
1513 | return 0; | |
1514 | } | |
c2c087e6 DW |
1515 | if (info->level == 10) |
1516 | map->raid_level = 1; | |
1517 | else | |
1518 | map->raid_level = info->level; | |
ef6ffade | 1519 | |
c2c087e6 DW |
1520 | map->num_members = info->raid_disks; |
1521 | for (i = 0; i < map->num_members; i++) { | |
1522 | /* initialized in add_to_super */ | |
be73972f | 1523 | set_imsm_ord_tbl_ent(map, i, 0); |
c2c087e6 | 1524 | } |
949c47a0 DW |
1525 | mpb->num_raid_devs++; |
1526 | super->dev_tbl[super->current_vol] = dev; | |
c2c087e6 DW |
1527 | |
1528 | return 1; | |
cdddbdbc DW |
1529 | } |
1530 | ||
bf5a934a DW |
1531 | static int init_super_imsm(struct supertype *st, mdu_array_info_t *info, |
1532 | unsigned long long size, char *name, | |
1533 | char *homehost, int *uuid) | |
1534 | { | |
1535 | /* This is primarily called by Create when creating a new array. | |
1536 | * We will then get add_to_super called for each component, and then | |
1537 | * write_init_super called to write it out to each device. | |
1538 | * For IMSM, Create can create on fresh devices or on a pre-existing | |
1539 | * array. | |
1540 | * To create on a pre-existing array a different method will be called. | |
1541 | * This one is just for fresh drives. | |
1542 | */ | |
1543 | struct intel_super *super; | |
1544 | struct imsm_super *mpb; | |
1545 | size_t mpb_size; | |
1546 | ||
1547 | if (!info) { | |
1548 | st->sb = NULL; | |
1549 | return 0; | |
1550 | } | |
1551 | if (st->sb) | |
1552 | return init_super_imsm_volume(st, info, size, name, homehost, | |
1553 | uuid); | |
1554 | ||
1555 | super = alloc_super(1); | |
1556 | if (!super) | |
1557 | return 0; | |
1558 | mpb_size = disks_to_mpb_size(info->nr_disks); | |
ef649044 | 1559 | if (posix_memalign(&super->buf, 512, mpb_size) != 0) { |
bf5a934a DW |
1560 | free(super); |
1561 | return 0; | |
1562 | } | |
ef649044 | 1563 | mpb = super->buf; |
bf5a934a DW |
1564 | memset(mpb, 0, mpb_size); |
1565 | ||
1566 | memcpy(mpb->sig, MPB_SIGNATURE, strlen(MPB_SIGNATURE)); | |
1567 | memcpy(mpb->sig + strlen(MPB_SIGNATURE), MPB_VERSION_RAID5, | |
1568 | strlen(MPB_VERSION_RAID5)); | |
1569 | mpb->mpb_size = mpb_size; | |
1570 | ||
bf5a934a DW |
1571 | st->sb = super; |
1572 | return 1; | |
1573 | } | |
1574 | ||
0e600426 | 1575 | #ifndef MDASSEMBLE |
bf5a934a DW |
1576 | static void add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk, |
1577 | int fd, char *devname) | |
1578 | { | |
1579 | struct intel_super *super = st->sb; | |
d23fe947 | 1580 | struct imsm_super *mpb = super->anchor; |
bf5a934a DW |
1581 | struct dl *dl; |
1582 | struct imsm_dev *dev; | |
1583 | struct imsm_map *map; | |
bf5a934a DW |
1584 | __u32 status; |
1585 | ||
949c47a0 | 1586 | dev = get_imsm_dev(super, super->current_vol); |
a965f303 | 1587 | map = get_imsm_map(dev, 0); |
bf5a934a DW |
1588 | |
1589 | for (dl = super->disks; dl ; dl = dl->next) | |
1590 | if (dl->major == dk->major && | |
1591 | dl->minor == dk->minor) | |
1592 | break; | |
d23fe947 | 1593 | |
bf5a934a DW |
1594 | if (!dl || ! (dk->state & (1<<MD_DISK_SYNC))) |
1595 | return; | |
1596 | ||
d23fe947 DW |
1597 | /* add a pristine spare to the metadata */ |
1598 | if (dl->index < 0) { | |
1599 | dl->index = super->anchor->num_disks; | |
1600 | super->anchor->num_disks++; | |
1601 | } | |
be73972f | 1602 | set_imsm_ord_tbl_ent(map, dk->number, dl->index); |
bf5a934a | 1603 | status = CONFIGURED_DISK | USABLE_DISK; |
d23fe947 DW |
1604 | dl->disk.status = __cpu_to_le32(status); |
1605 | ||
1606 | /* if we are creating the first raid device update the family number */ | |
1607 | if (super->current_vol == 0) { | |
1608 | __u32 sum; | |
1609 | struct imsm_dev *_dev = __get_imsm_dev(mpb, 0); | |
1610 | struct imsm_disk *_disk = __get_imsm_disk(mpb, dl->index); | |
1611 | ||
1612 | *_dev = *dev; | |
1613 | *_disk = dl->disk; | |
1614 | sum = __gen_imsm_checksum(mpb); | |
1615 | mpb->family_num = __cpu_to_le32(sum); | |
1616 | } | |
bf5a934a DW |
1617 | } |
1618 | ||
c2c087e6 | 1619 | static void add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk, |
cdddbdbc DW |
1620 | int fd, char *devname) |
1621 | { | |
c2c087e6 | 1622 | struct intel_super *super = st->sb; |
c2c087e6 DW |
1623 | struct dl *dd; |
1624 | unsigned long long size; | |
1625 | __u32 status, id; | |
1626 | int rv; | |
1627 | struct stat stb; | |
1628 | ||
bf5a934a DW |
1629 | if (super->current_vol >= 0) { |
1630 | add_to_super_imsm_volume(st, dk, fd, devname); | |
1631 | return; | |
1632 | } | |
1633 | ||
c2c087e6 DW |
1634 | fstat(fd, &stb); |
1635 | dd = malloc(sizeof(*dd)); | |
b9f594fe | 1636 | if (!dd) { |
c2c087e6 DW |
1637 | fprintf(stderr, |
1638 | Name ": malloc failed %s:%d.\n", __func__, __LINE__); | |
1639 | abort(); | |
1640 | } | |
1641 | memset(dd, 0, sizeof(*dd)); | |
1642 | dd->major = major(stb.st_rdev); | |
1643 | dd->minor = minor(stb.st_rdev); | |
b9f594fe | 1644 | dd->index = -1; |
c2c087e6 | 1645 | dd->devname = devname ? strdup(devname) : NULL; |
c2c087e6 DW |
1646 | dd->fd = fd; |
1647 | rv = imsm_read_serial(fd, devname, dd->serial); | |
1648 | if (rv) { | |
1649 | fprintf(stderr, | |
0030e8d6 | 1650 | Name ": failed to retrieve scsi serial, aborting\n"); |
949c47a0 | 1651 | free(dd); |
0030e8d6 | 1652 | abort(); |
c2c087e6 DW |
1653 | } |
1654 | ||
c2c087e6 DW |
1655 | get_dev_size(fd, NULL, &size); |
1656 | size /= 512; | |
1657 | status = USABLE_DISK | SPARE_DISK; | |
1f24f035 | 1658 | serialcpy(dd->disk.serial, dd->serial); |
b9f594fe DW |
1659 | dd->disk.total_blocks = __cpu_to_le32(size); |
1660 | dd->disk.status = __cpu_to_le32(status); | |
c2c087e6 | 1661 | if (sysfs_disk_to_scsi_id(fd, &id) == 0) |
b9f594fe | 1662 | dd->disk.scsi_id = __cpu_to_le32(id); |
c2c087e6 | 1663 | else |
b9f594fe | 1664 | dd->disk.scsi_id = __cpu_to_le32(0); |
43dad3d6 DW |
1665 | |
1666 | if (st->update_tail) { | |
1667 | dd->next = super->add; | |
1668 | super->add = dd; | |
1669 | } else { | |
1670 | dd->next = super->disks; | |
1671 | super->disks = dd; | |
1672 | } | |
cdddbdbc DW |
1673 | } |
1674 | ||
c2c087e6 DW |
1675 | static int store_imsm_mpb(int fd, struct intel_super *super); |
1676 | ||
d23fe947 DW |
1677 | /* spare records have their own family number and do not have any defined raid |
1678 | * devices | |
1679 | */ | |
1680 | static int write_super_imsm_spares(struct intel_super *super, int doclose) | |
1681 | { | |
1682 | struct imsm_super mpb_save; | |
1683 | struct imsm_super *mpb = super->anchor; | |
1684 | __u32 sum; | |
1685 | struct dl *d; | |
1686 | ||
1687 | mpb_save = *mpb; | |
1688 | mpb->num_raid_devs = 0; | |
1689 | mpb->num_disks = 1; | |
1690 | mpb->mpb_size = sizeof(struct imsm_super); | |
1691 | mpb->generation_num = __cpu_to_le32(1UL); | |
1692 | ||
1693 | for (d = super->disks; d; d = d->next) { | |
8796fdc4 | 1694 | if (d->index != -1) |
d23fe947 DW |
1695 | continue; |
1696 | ||
1697 | mpb->disk[0] = d->disk; | |
1698 | sum = __gen_imsm_checksum(mpb); | |
1699 | mpb->family_num = __cpu_to_le32(sum); | |
1700 | sum = __gen_imsm_checksum(mpb); | |
1701 | mpb->check_sum = __cpu_to_le32(sum); | |
1702 | ||
1703 | if (store_imsm_mpb(d->fd, super)) { | |
1704 | fprintf(stderr, "%s: failed for device %d:%d %s\n", | |
1705 | __func__, d->major, d->minor, strerror(errno)); | |
1706 | *mpb = mpb_save; | |
e74255d9 | 1707 | return 1; |
d23fe947 DW |
1708 | } |
1709 | if (doclose) { | |
1710 | close(d->fd); | |
1711 | d->fd = -1; | |
1712 | } | |
1713 | } | |
1714 | ||
1715 | *mpb = mpb_save; | |
e74255d9 | 1716 | return 0; |
d23fe947 DW |
1717 | } |
1718 | ||
c2c087e6 | 1719 | static int write_super_imsm(struct intel_super *super, int doclose) |
cdddbdbc | 1720 | { |
949c47a0 | 1721 | struct imsm_super *mpb = super->anchor; |
c2c087e6 DW |
1722 | struct dl *d; |
1723 | __u32 generation; | |
1724 | __u32 sum; | |
d23fe947 | 1725 | int spares = 0; |
949c47a0 | 1726 | int i; |
a48ac0a8 | 1727 | __u32 mpb_size = sizeof(struct imsm_super) - sizeof(struct imsm_disk); |
cdddbdbc | 1728 | |
c2c087e6 DW |
1729 | /* 'generation' is incremented everytime the metadata is written */ |
1730 | generation = __le32_to_cpu(mpb->generation_num); | |
1731 | generation++; | |
1732 | mpb->generation_num = __cpu_to_le32(generation); | |
1733 | ||
d23fe947 | 1734 | for (d = super->disks; d; d = d->next) { |
8796fdc4 | 1735 | if (d->index == -1) |
d23fe947 DW |
1736 | spares++; |
1737 | else { | |
d23fe947 | 1738 | mpb->disk[d->index] = d->disk; |
a48ac0a8 | 1739 | mpb_size += sizeof(struct imsm_disk); |
d23fe947 DW |
1740 | } |
1741 | } | |
b9f594fe | 1742 | |
949c47a0 DW |
1743 | for (i = 0; i < mpb->num_raid_devs; i++) { |
1744 | struct imsm_dev *dev = __get_imsm_dev(mpb, i); | |
1745 | ||
1746 | imsm_copy_dev(dev, super->dev_tbl[i]); | |
a48ac0a8 | 1747 | mpb_size += sizeof_imsm_dev(dev, 0); |
949c47a0 | 1748 | } |
a48ac0a8 DW |
1749 | mpb_size += __le32_to_cpu(mpb->bbm_log_size); |
1750 | mpb->mpb_size = __cpu_to_le32(mpb_size); | |
949c47a0 | 1751 | |
c2c087e6 | 1752 | /* recalculate checksum */ |
949c47a0 | 1753 | sum = __gen_imsm_checksum(mpb); |
c2c087e6 DW |
1754 | mpb->check_sum = __cpu_to_le32(sum); |
1755 | ||
d23fe947 | 1756 | /* write the mpb for disks that compose raid devices */ |
c2c087e6 | 1757 | for (d = super->disks; d ; d = d->next) { |
d23fe947 DW |
1758 | if (d->index < 0) |
1759 | continue; | |
8796fdc4 | 1760 | if (store_imsm_mpb(d->fd, super)) |
c2c087e6 DW |
1761 | fprintf(stderr, "%s: failed for device %d:%d %s\n", |
1762 | __func__, d->major, d->minor, strerror(errno)); | |
c2c087e6 DW |
1763 | if (doclose) { |
1764 | close(d->fd); | |
1765 | d->fd = -1; | |
1766 | } | |
1767 | } | |
1768 | ||
d23fe947 DW |
1769 | if (spares) |
1770 | return write_super_imsm_spares(super, doclose); | |
1771 | ||
e74255d9 | 1772 | return 0; |
c2c087e6 DW |
1773 | } |
1774 | ||
0e600426 | 1775 | |
43dad3d6 DW |
1776 | static int create_array(struct supertype *st) |
1777 | { | |
1778 | size_t len; | |
1779 | struct imsm_update_create_array *u; | |
1780 | struct intel_super *super = st->sb; | |
1781 | struct imsm_dev *dev = get_imsm_dev(super, super->current_vol); | |
1782 | ||
1783 | len = sizeof(*u) - sizeof(*dev) + sizeof_imsm_dev(dev, 0); | |
1784 | u = malloc(len); | |
1785 | if (!u) { | |
1786 | fprintf(stderr, "%s: failed to allocate update buffer\n", | |
1787 | __func__); | |
1788 | return 1; | |
1789 | } | |
1790 | ||
1791 | u->type = update_create_array; | |
1792 | u->dev_idx = super->current_vol; | |
1793 | imsm_copy_dev(&u->dev, dev); | |
1794 | append_metadata_update(st, u, len); | |
1795 | ||
1796 | return 0; | |
1797 | } | |
1798 | ||
1799 | static int add_disk(struct supertype *st) | |
1800 | { | |
1801 | struct intel_super *super = st->sb; | |
1802 | size_t len; | |
1803 | struct imsm_update_add_disk *u; | |
1804 | ||
1805 | if (!super->add) | |
1806 | return 0; | |
1807 | ||
1808 | len = sizeof(*u); | |
1809 | u = malloc(len); | |
1810 | if (!u) { | |
1811 | fprintf(stderr, "%s: failed to allocate update buffer\n", | |
1812 | __func__); | |
1813 | return 1; | |
1814 | } | |
1815 | ||
1816 | u->type = update_add_disk; | |
1817 | append_metadata_update(st, u, len); | |
1818 | ||
1819 | return 0; | |
1820 | } | |
1821 | ||
c2c087e6 DW |
1822 | static int write_init_super_imsm(struct supertype *st) |
1823 | { | |
8273f55e | 1824 | if (st->update_tail) { |
43dad3d6 DW |
1825 | /* queue the recently created array / added disk |
1826 | * as a metadata update */ | |
8273f55e | 1827 | struct intel_super *super = st->sb; |
8273f55e | 1828 | struct dl *d; |
43dad3d6 | 1829 | int rv; |
8273f55e | 1830 | |
43dad3d6 DW |
1831 | /* determine if we are creating a volume or adding a disk */ |
1832 | if (super->current_vol < 0) { | |
1833 | /* in the add disk case we are running in mdmon | |
1834 | * context, so don't close fd's | |
1835 | */ | |
1836 | return add_disk(st); | |
1837 | } else | |
1838 | rv = create_array(st); | |
8273f55e DW |
1839 | |
1840 | for (d = super->disks; d ; d = d->next) { | |
1841 | close(d->fd); | |
1842 | d->fd = -1; | |
1843 | } | |
1844 | ||
43dad3d6 | 1845 | return rv; |
8273f55e DW |
1846 | } else |
1847 | return write_super_imsm(st->sb, 1); | |
cdddbdbc | 1848 | } |
0e600426 | 1849 | #endif |
cdddbdbc DW |
1850 | |
1851 | static int store_zero_imsm(struct supertype *st, int fd) | |
1852 | { | |
551c80c1 | 1853 | unsigned long long dsize; |
6416d527 | 1854 | void *buf; |
551c80c1 DW |
1855 | |
1856 | get_dev_size(fd, NULL, &dsize); | |
1857 | ||
1858 | /* first block is stored on second to last sector of the disk */ | |
1859 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
1860 | return 1; | |
1861 | ||
ad97895e DW |
1862 | if (posix_memalign(&buf, 512, 512) != 0) |
1863 | return 1; | |
1864 | ||
eb7ea463 DW |
1865 | memset(buf, 0, 512); |
1866 | if (write(fd, buf, 512) != 512) | |
551c80c1 | 1867 | return 1; |
cdddbdbc DW |
1868 | return 0; |
1869 | } | |
1870 | ||
0e600426 N |
1871 | static int imsm_bbm_log_size(struct imsm_super *mpb) |
1872 | { | |
1873 | return __le32_to_cpu(mpb->bbm_log_size); | |
1874 | } | |
1875 | ||
1876 | #ifndef MDASSEMBLE | |
cdddbdbc DW |
1877 | static int validate_geometry_imsm_container(struct supertype *st, int level, |
1878 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 1879 | unsigned long long size, char *dev, |
2c514b71 NB |
1880 | unsigned long long *freesize, |
1881 | int verbose) | |
cdddbdbc | 1882 | { |
c2c087e6 DW |
1883 | int fd; |
1884 | unsigned long long ldsize; | |
cdddbdbc | 1885 | |
c2c087e6 DW |
1886 | if (level != LEVEL_CONTAINER) |
1887 | return 0; | |
1888 | if (!dev) | |
1889 | return 1; | |
1890 | ||
1891 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
1892 | if (fd < 0) { | |
2c514b71 NB |
1893 | if (verbose) |
1894 | fprintf(stderr, Name ": imsm: Cannot open %s: %s\n", | |
1895 | dev, strerror(errno)); | |
c2c087e6 DW |
1896 | return 0; |
1897 | } | |
1898 | if (!get_dev_size(fd, dev, &ldsize)) { | |
1899 | close(fd); | |
1900 | return 0; | |
1901 | } | |
1902 | close(fd); | |
1903 | ||
1904 | *freesize = avail_size_imsm(st, ldsize >> 9); | |
1905 | ||
1906 | return 1; | |
cdddbdbc DW |
1907 | } |
1908 | ||
c2c087e6 DW |
1909 | /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd |
1910 | * FIX ME add ahci details | |
1911 | */ | |
8b353278 DW |
1912 | static int validate_geometry_imsm_volume(struct supertype *st, int level, |
1913 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 1914 | unsigned long long size, char *dev, |
2c514b71 NB |
1915 | unsigned long long *freesize, |
1916 | int verbose) | |
cdddbdbc | 1917 | { |
c2c087e6 DW |
1918 | struct stat stb; |
1919 | struct intel_super *super = st->sb; | |
1920 | struct dl *dl; | |
1921 | unsigned long long pos = 0; | |
1922 | unsigned long long maxsize; | |
1923 | struct extent *e; | |
1924 | int i; | |
cdddbdbc | 1925 | |
c2c087e6 DW |
1926 | if (level == LEVEL_CONTAINER) |
1927 | return 0; | |
1928 | ||
1929 | if (level == 1 && raiddisks > 2) { | |
2c514b71 NB |
1930 | if (verbose) |
1931 | fprintf(stderr, Name ": imsm does not support more " | |
1932 | "than 2 in a raid1 configuration\n"); | |
c2c087e6 DW |
1933 | return 0; |
1934 | } | |
1935 | ||
1936 | /* We must have the container info already read in. */ | |
1937 | if (!super) | |
1938 | return 0; | |
1939 | ||
1940 | if (!dev) { | |
1941 | /* General test: make sure there is space for | |
2da8544a DW |
1942 | * 'raiddisks' device extents of size 'size' at a given |
1943 | * offset | |
c2c087e6 DW |
1944 | */ |
1945 | unsigned long long minsize = size*2 /* convert to blocks */; | |
2da8544a | 1946 | unsigned long long start_offset = ~0ULL; |
c2c087e6 DW |
1947 | int dcnt = 0; |
1948 | if (minsize == 0) | |
1949 | minsize = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
1950 | for (dl = super->disks; dl ; dl = dl->next) { | |
1951 | int found = 0; | |
1952 | ||
bf5a934a | 1953 | pos = 0; |
c2c087e6 DW |
1954 | i = 0; |
1955 | e = get_extents(super, dl); | |
1956 | if (!e) continue; | |
1957 | do { | |
1958 | unsigned long long esize; | |
1959 | esize = e[i].start - pos; | |
1960 | if (esize >= minsize) | |
1961 | found = 1; | |
2da8544a DW |
1962 | if (found && start_offset == ~0ULL) { |
1963 | start_offset = pos; | |
1964 | break; | |
1965 | } else if (found && pos != start_offset) { | |
1966 | found = 0; | |
1967 | break; | |
1968 | } | |
c2c087e6 DW |
1969 | pos = e[i].start + e[i].size; |
1970 | i++; | |
1971 | } while (e[i-1].size); | |
1972 | if (found) | |
1973 | dcnt++; | |
1974 | free(e); | |
1975 | } | |
1976 | if (dcnt < raiddisks) { | |
2c514b71 NB |
1977 | if (verbose) |
1978 | fprintf(stderr, Name ": imsm: Not enough " | |
1979 | "devices with space for this array " | |
1980 | "(%d < %d)\n", | |
1981 | dcnt, raiddisks); | |
c2c087e6 DW |
1982 | return 0; |
1983 | } | |
1984 | return 1; | |
1985 | } | |
1986 | /* This device must be a member of the set */ | |
1987 | if (stat(dev, &stb) < 0) | |
1988 | return 0; | |
1989 | if ((S_IFMT & stb.st_mode) != S_IFBLK) | |
1990 | return 0; | |
1991 | for (dl = super->disks ; dl ; dl = dl->next) { | |
1992 | if (dl->major == major(stb.st_rdev) && | |
1993 | dl->minor == minor(stb.st_rdev)) | |
1994 | break; | |
1995 | } | |
1996 | if (!dl) { | |
2c514b71 NB |
1997 | if (verbose) |
1998 | fprintf(stderr, Name ": %s is not in the " | |
1999 | "same imsm set\n", dev); | |
c2c087e6 DW |
2000 | return 0; |
2001 | } | |
2002 | e = get_extents(super, dl); | |
2003 | maxsize = 0; | |
2004 | i = 0; | |
2005 | if (e) do { | |
2006 | unsigned long long esize; | |
2007 | esize = e[i].start - pos; | |
2008 | if (esize >= maxsize) | |
2009 | maxsize = esize; | |
2010 | pos = e[i].start + e[i].size; | |
2011 | i++; | |
2012 | } while (e[i-1].size); | |
2013 | *freesize = maxsize; | |
2014 | ||
2015 | return 1; | |
cdddbdbc DW |
2016 | } |
2017 | ||
bf5a934a DW |
2018 | static int validate_geometry_imsm(struct supertype *st, int level, int layout, |
2019 | int raiddisks, int chunk, unsigned long long size, | |
2020 | char *dev, unsigned long long *freesize, | |
2021 | int verbose) | |
2022 | { | |
2023 | int fd, cfd; | |
2024 | struct mdinfo *sra; | |
2025 | ||
2026 | /* if given unused devices create a container | |
2027 | * if given given devices in a container create a member volume | |
2028 | */ | |
2029 | if (level == LEVEL_CONTAINER) { | |
2030 | /* Must be a fresh device to add to a container */ | |
2031 | return validate_geometry_imsm_container(st, level, layout, | |
2032 | raiddisks, chunk, size, | |
2033 | dev, freesize, | |
2034 | verbose); | |
2035 | } | |
2036 | ||
2037 | if (st->sb) { | |
2038 | /* creating in a given container */ | |
2039 | return validate_geometry_imsm_volume(st, level, layout, | |
2040 | raiddisks, chunk, size, | |
2041 | dev, freesize, verbose); | |
2042 | } | |
2043 | ||
2044 | /* limit creation to the following levels */ | |
2045 | if (!dev) | |
2046 | switch (level) { | |
2047 | case 0: | |
2048 | case 1: | |
2049 | case 10: | |
2050 | case 5: | |
2051 | break; | |
2052 | default: | |
2053 | return 1; | |
2054 | } | |
2055 | ||
2056 | /* This device needs to be a device in an 'imsm' container */ | |
2057 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
2058 | if (fd >= 0) { | |
2059 | if (verbose) | |
2060 | fprintf(stderr, | |
2061 | Name ": Cannot create this array on device %s\n", | |
2062 | dev); | |
2063 | close(fd); | |
2064 | return 0; | |
2065 | } | |
2066 | if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) { | |
2067 | if (verbose) | |
2068 | fprintf(stderr, Name ": Cannot open %s: %s\n", | |
2069 | dev, strerror(errno)); | |
2070 | return 0; | |
2071 | } | |
2072 | /* Well, it is in use by someone, maybe an 'imsm' container. */ | |
2073 | cfd = open_container(fd); | |
2074 | if (cfd < 0) { | |
2075 | close(fd); | |
2076 | if (verbose) | |
2077 | fprintf(stderr, Name ": Cannot use %s: It is busy\n", | |
2078 | dev); | |
2079 | return 0; | |
2080 | } | |
2081 | sra = sysfs_read(cfd, 0, GET_VERSION); | |
2082 | close(fd); | |
2083 | if (sra && sra->array.major_version == -1 && | |
2084 | strcmp(sra->text_version, "imsm") == 0) { | |
2085 | /* This is a member of a imsm container. Load the container | |
2086 | * and try to create a volume | |
2087 | */ | |
2088 | struct intel_super *super; | |
2089 | ||
2090 | if (load_super_imsm_all(st, cfd, (void **) &super, NULL, 1) == 0) { | |
2091 | st->sb = super; | |
2092 | st->container_dev = fd2devnum(cfd); | |
2093 | close(cfd); | |
2094 | return validate_geometry_imsm_volume(st, level, layout, | |
2095 | raiddisks, chunk, | |
2096 | size, dev, | |
2097 | freesize, verbose); | |
2098 | } | |
2099 | close(cfd); | |
2100 | } else /* may belong to another container */ | |
2101 | return 0; | |
2102 | ||
2103 | return 1; | |
2104 | } | |
0e600426 | 2105 | #endif /* MDASSEMBLE */ |
bf5a934a | 2106 | |
cdddbdbc DW |
2107 | static struct mdinfo *container_content_imsm(struct supertype *st) |
2108 | { | |
4f5bc454 DW |
2109 | /* Given a container loaded by load_super_imsm_all, |
2110 | * extract information about all the arrays into | |
2111 | * an mdinfo tree. | |
2112 | * | |
2113 | * For each imsm_dev create an mdinfo, fill it in, | |
2114 | * then look for matching devices in super->disks | |
2115 | * and create appropriate device mdinfo. | |
2116 | */ | |
2117 | struct intel_super *super = st->sb; | |
949c47a0 | 2118 | struct imsm_super *mpb = super->anchor; |
4f5bc454 DW |
2119 | struct mdinfo *rest = NULL; |
2120 | int i; | |
cdddbdbc | 2121 | |
604b746f JD |
2122 | /* do not assemble arrays that might have bad blocks */ |
2123 | if (imsm_bbm_log_size(super->anchor)) { | |
2124 | fprintf(stderr, Name ": BBM log found in metadata. " | |
2125 | "Cannot activate array(s).\n"); | |
2126 | return NULL; | |
2127 | } | |
2128 | ||
4f5bc454 | 2129 | for (i = 0; i < mpb->num_raid_devs; i++) { |
949c47a0 | 2130 | struct imsm_dev *dev = get_imsm_dev(super, i); |
a965f303 | 2131 | struct imsm_map *map = get_imsm_map(dev, 0); |
4f5bc454 | 2132 | struct mdinfo *this; |
4f5bc454 DW |
2133 | int slot; |
2134 | ||
2135 | this = malloc(sizeof(*this)); | |
2136 | memset(this, 0, sizeof(*this)); | |
2137 | this->next = rest; | |
4f5bc454 | 2138 | |
301406c9 DW |
2139 | super->current_vol = i; |
2140 | getinfo_super_imsm_volume(st, this); | |
4f5bc454 | 2141 | for (slot = 0 ; slot < map->num_members; slot++) { |
4f5bc454 DW |
2142 | struct mdinfo *info_d; |
2143 | struct dl *d; | |
2144 | int idx; | |
9a1608e5 | 2145 | int skip; |
4f5bc454 | 2146 | __u32 s; |
7eef0453 | 2147 | __u32 ord; |
4f5bc454 | 2148 | |
9a1608e5 | 2149 | skip = 0; |
ff077194 | 2150 | idx = get_imsm_disk_idx(dev, slot); |
7eef0453 | 2151 | ord = get_imsm_ord_tbl_ent(dev, slot); |
4f5bc454 DW |
2152 | for (d = super->disks; d ; d = d->next) |
2153 | if (d->index == idx) | |
2154 | break; | |
2155 | ||
2156 | if (d == NULL) | |
9a1608e5 DW |
2157 | skip = 1; |
2158 | ||
2159 | s = d ? __le32_to_cpu(d->disk.status) : 0; | |
2160 | if (s & FAILED_DISK) | |
2161 | skip = 1; | |
2162 | if (!(s & USABLE_DISK)) | |
2163 | skip = 1; | |
7eef0453 DW |
2164 | if (ord & IMSM_ORD_REBUILD) |
2165 | skip = 1; | |
9a1608e5 DW |
2166 | |
2167 | /* | |
2168 | * if we skip some disks the array will be assmebled degraded; | |
2169 | * reset resync start to avoid a dirty-degraded situation | |
2170 | * | |
2171 | * FIXME handle dirty degraded | |
2172 | */ | |
2173 | if (skip && !dev->vol.dirty) | |
2174 | this->resync_start = ~0ULL; | |
2175 | if (skip) | |
2176 | continue; | |
4f5bc454 DW |
2177 | |
2178 | info_d = malloc(sizeof(*info_d)); | |
9a1608e5 DW |
2179 | if (!info_d) { |
2180 | fprintf(stderr, Name ": failed to allocate disk" | |
2181 | " for volume %s\n", (char *) dev->volume); | |
2182 | free(this); | |
2183 | this = rest; | |
2184 | break; | |
2185 | } | |
4f5bc454 DW |
2186 | memset(info_d, 0, sizeof(*info_d)); |
2187 | info_d->next = this->devs; | |
2188 | this->devs = info_d; | |
2189 | ||
4f5bc454 DW |
2190 | info_d->disk.number = d->index; |
2191 | info_d->disk.major = d->major; | |
2192 | info_d->disk.minor = d->minor; | |
2193 | info_d->disk.raid_disk = slot; | |
4f5bc454 DW |
2194 | |
2195 | this->array.working_disks++; | |
2196 | ||
2197 | info_d->events = __le32_to_cpu(mpb->generation_num); | |
2198 | info_d->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
2199 | info_d->component_size = __le32_to_cpu(map->blocks_per_member); | |
2200 | if (d->devname) | |
2201 | strcpy(info_d->name, d->devname); | |
2202 | } | |
9a1608e5 | 2203 | rest = this; |
4f5bc454 DW |
2204 | } |
2205 | ||
2206 | return rest; | |
cdddbdbc DW |
2207 | } |
2208 | ||
845dea95 | 2209 | |
0e600426 | 2210 | #ifndef MDASSEMBLE |
cba0191b NB |
2211 | static int imsm_open_new(struct supertype *c, struct active_array *a, |
2212 | char *inst) | |
845dea95 | 2213 | { |
0372d5a2 | 2214 | struct intel_super *super = c->sb; |
949c47a0 | 2215 | struct imsm_super *mpb = super->anchor; |
0372d5a2 | 2216 | |
949c47a0 | 2217 | if (atoi(inst) >= mpb->num_raid_devs) { |
0372d5a2 DW |
2218 | fprintf(stderr, "%s: subarry index %d, out of range\n", |
2219 | __func__, atoi(inst)); | |
2220 | return -ENODEV; | |
2221 | } | |
2222 | ||
4e6e574a | 2223 | dprintf("imsm: open_new %s\n", inst); |
cba0191b | 2224 | a->info.container_member = atoi(inst); |
845dea95 NB |
2225 | return 0; |
2226 | } | |
2227 | ||
fb49eef2 | 2228 | static __u8 imsm_check_degraded(struct intel_super *super, struct imsm_dev *dev, int failed) |
c2a1e7da | 2229 | { |
a965f303 | 2230 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2a1e7da DW |
2231 | |
2232 | if (!failed) | |
3393c6af DW |
2233 | return map->map_state == IMSM_T_STATE_UNINITIALIZED ? |
2234 | IMSM_T_STATE_UNINITIALIZED : IMSM_T_STATE_NORMAL; | |
c2a1e7da DW |
2235 | |
2236 | switch (get_imsm_raid_level(map)) { | |
2237 | case 0: | |
2238 | return IMSM_T_STATE_FAILED; | |
2239 | break; | |
2240 | case 1: | |
2241 | if (failed < map->num_members) | |
2242 | return IMSM_T_STATE_DEGRADED; | |
2243 | else | |
2244 | return IMSM_T_STATE_FAILED; | |
2245 | break; | |
2246 | case 10: | |
2247 | { | |
2248 | /** | |
2249 | * check to see if any mirrors have failed, | |
2250 | * otherwise we are degraded | |
2251 | */ | |
2252 | int device_per_mirror = 2; /* FIXME is this always the case? | |
2253 | * and are they always adjacent? | |
2254 | */ | |
8796fdc4 | 2255 | int r10fail = 0; |
c2a1e7da DW |
2256 | int i; |
2257 | ||
2258 | for (i = 0; i < map->num_members; i++) { | |
ff077194 | 2259 | int idx = get_imsm_disk_idx(dev, i); |
949c47a0 | 2260 | struct imsm_disk *disk = get_imsm_disk(super, idx); |
c2a1e7da | 2261 | |
8796fdc4 DW |
2262 | if (!disk) |
2263 | r10fail++; | |
2264 | else if (__le32_to_cpu(disk->status) & FAILED_DISK) | |
2265 | r10fail++; | |
c2a1e7da | 2266 | |
8796fdc4 | 2267 | if (r10fail >= device_per_mirror) |
c2a1e7da DW |
2268 | return IMSM_T_STATE_FAILED; |
2269 | ||
8796fdc4 | 2270 | /* reset 'r10fail' for next mirror set */ |
c2a1e7da | 2271 | if (!((i + 1) % device_per_mirror)) |
8796fdc4 | 2272 | r10fail = 0; |
c2a1e7da DW |
2273 | } |
2274 | ||
2275 | return IMSM_T_STATE_DEGRADED; | |
2276 | } | |
2277 | case 5: | |
2278 | if (failed < 2) | |
2279 | return IMSM_T_STATE_DEGRADED; | |
2280 | else | |
2281 | return IMSM_T_STATE_FAILED; | |
2282 | break; | |
2283 | default: | |
2284 | break; | |
2285 | } | |
2286 | ||
2287 | return map->map_state; | |
2288 | } | |
2289 | ||
ff077194 | 2290 | static int imsm_count_failed(struct intel_super *super, struct imsm_dev *dev) |
c2a1e7da DW |
2291 | { |
2292 | int i; | |
2293 | int failed = 0; | |
2294 | struct imsm_disk *disk; | |
ff077194 | 2295 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2a1e7da DW |
2296 | |
2297 | for (i = 0; i < map->num_members; i++) { | |
b10b37b8 DW |
2298 | __u32 ord = get_imsm_ord_tbl_ent(dev, i); |
2299 | int idx = ord_to_idx(ord); | |
c2a1e7da | 2300 | |
949c47a0 | 2301 | disk = get_imsm_disk(super, idx); |
b10b37b8 DW |
2302 | if (!disk || |
2303 | __le32_to_cpu(disk->status) & FAILED_DISK || | |
2304 | ord & IMSM_ORD_REBUILD) | |
fcb84475 | 2305 | failed++; |
c2a1e7da DW |
2306 | } |
2307 | ||
2308 | return failed; | |
845dea95 NB |
2309 | } |
2310 | ||
0c046afd DW |
2311 | static int is_resyncing(struct imsm_dev *dev) |
2312 | { | |
2313 | struct imsm_map *migr_map; | |
2314 | ||
2315 | if (!dev->vol.migr_state) | |
2316 | return 0; | |
2317 | ||
2318 | if (dev->vol.migr_type == 0) | |
2319 | return 1; | |
2320 | ||
2321 | migr_map = get_imsm_map(dev, 1); | |
2322 | ||
2323 | if (migr_map->map_state == IMSM_T_STATE_NORMAL) | |
2324 | return 1; | |
2325 | else | |
2326 | return 0; | |
2327 | } | |
2328 | ||
2329 | static int is_rebuilding(struct imsm_dev *dev) | |
2330 | { | |
2331 | struct imsm_map *migr_map; | |
2332 | ||
2333 | if (!dev->vol.migr_state) | |
2334 | return 0; | |
2335 | ||
2336 | if (dev->vol.migr_type == 0) | |
2337 | return 0; | |
2338 | ||
2339 | migr_map = get_imsm_map(dev, 1); | |
2340 | ||
2341 | if (migr_map->map_state == IMSM_T_STATE_DEGRADED) | |
2342 | return 1; | |
2343 | else | |
2344 | return 0; | |
2345 | } | |
2346 | ||
2347 | /* Handle dirty -> clean transititions and resync. Degraded and rebuild | |
2348 | * states are handled in imsm_set_disk() with one exception, when a | |
2349 | * resync is stopped due to a new failure this routine will set the | |
2350 | * 'degraded' state for the array. | |
2351 | */ | |
01f157d7 | 2352 | static int imsm_set_array_state(struct active_array *a, int consistent) |
a862209d DW |
2353 | { |
2354 | int inst = a->info.container_member; | |
2355 | struct intel_super *super = a->container->sb; | |
949c47a0 | 2356 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
a965f303 | 2357 | struct imsm_map *map = get_imsm_map(dev, 0); |
0c046afd DW |
2358 | int failed = imsm_count_failed(super, dev); |
2359 | __u8 map_state = imsm_check_degraded(super, dev, failed); | |
a862209d | 2360 | |
0c046afd DW |
2361 | if (consistent == 2 && |
2362 | (a->resync_start != ~0ULL || | |
2363 | map_state != IMSM_T_STATE_NORMAL || | |
2364 | dev->vol.migr_state)) | |
01f157d7 | 2365 | consistent = 0; |
272906ef | 2366 | |
a862209d | 2367 | if (a->resync_start == ~0ULL) { |
0c046afd DW |
2368 | /* complete intialization / resync, |
2369 | * recovery is completed in ->set_disk | |
2370 | */ | |
2371 | if (is_resyncing(dev)) { | |
2372 | dprintf("imsm: mark resync done\n"); | |
3393c6af | 2373 | dev->vol.migr_state = 0; |
0c046afd | 2374 | map->map_state = map_state; |
115c3803 | 2375 | super->updates_pending++; |
115c3803 | 2376 | } |
0c046afd DW |
2377 | } else if (!is_resyncing(dev) && !failed) { |
2378 | /* mark the start of the init process if nothing is failed */ | |
2379 | dprintf("imsm: mark resync start (%llu)\n", a->resync_start); | |
2380 | map->map_state = map_state; | |
2381 | migrate(dev, IMSM_T_STATE_NORMAL, | |
2382 | map->map_state == IMSM_T_STATE_NORMAL); | |
3393c6af | 2383 | super->updates_pending++; |
115c3803 | 2384 | } |
a862209d | 2385 | |
3393c6af | 2386 | /* mark dirty / clean */ |
0c046afd | 2387 | if (dev->vol.dirty != !consistent) { |
3393c6af | 2388 | dprintf("imsm: mark '%s' (%llu)\n", |
0c046afd DW |
2389 | consistent ? "clean" : "dirty", a->resync_start); |
2390 | if (consistent) | |
2391 | dev->vol.dirty = 0; | |
2392 | else | |
2393 | dev->vol.dirty = 1; | |
a862209d DW |
2394 | super->updates_pending++; |
2395 | } | |
01f157d7 | 2396 | return consistent; |
a862209d DW |
2397 | } |
2398 | ||
8d45d196 | 2399 | static void imsm_set_disk(struct active_array *a, int n, int state) |
845dea95 | 2400 | { |
8d45d196 DW |
2401 | int inst = a->info.container_member; |
2402 | struct intel_super *super = a->container->sb; | |
949c47a0 | 2403 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
a965f303 | 2404 | struct imsm_map *map = get_imsm_map(dev, 0); |
8d45d196 | 2405 | struct imsm_disk *disk; |
0c046afd | 2406 | int failed; |
8d45d196 | 2407 | __u32 status; |
b10b37b8 | 2408 | __u32 ord; |
0c046afd | 2409 | __u8 map_state; |
8d45d196 DW |
2410 | |
2411 | if (n > map->num_members) | |
2412 | fprintf(stderr, "imsm: set_disk %d out of range 0..%d\n", | |
2413 | n, map->num_members - 1); | |
2414 | ||
2415 | if (n < 0) | |
2416 | return; | |
2417 | ||
4e6e574a | 2418 | dprintf("imsm: set_disk %d:%x\n", n, state); |
8d45d196 | 2419 | |
b10b37b8 DW |
2420 | ord = get_imsm_ord_tbl_ent(dev, n); |
2421 | disk = get_imsm_disk(super, ord_to_idx(ord)); | |
8d45d196 | 2422 | |
5802a811 | 2423 | /* check for new failures */ |
8d45d196 DW |
2424 | status = __le32_to_cpu(disk->status); |
2425 | if ((state & DS_FAULTY) && !(status & FAILED_DISK)) { | |
2426 | status |= FAILED_DISK; | |
2427 | disk->status = __cpu_to_le32(status); | |
a8473e68 | 2428 | disk->scsi_id = __cpu_to_le32(~(__u32)0); |
8796fdc4 | 2429 | memmove(&disk->serial[0], &disk->serial[1], MAX_RAID_SERIAL_LEN - 1); |
5802a811 | 2430 | super->updates_pending++; |
8d45d196 | 2431 | } |
19859edc | 2432 | /* check if in_sync */ |
b10b37b8 DW |
2433 | if (state & DS_INSYNC && ord & IMSM_ORD_REBUILD) { |
2434 | struct imsm_map *migr_map = get_imsm_map(dev, 1); | |
2435 | ||
2436 | set_imsm_ord_tbl_ent(migr_map, n, ord_to_idx(ord)); | |
19859edc DW |
2437 | super->updates_pending++; |
2438 | } | |
8d45d196 | 2439 | |
0c046afd DW |
2440 | failed = imsm_count_failed(super, dev); |
2441 | map_state = imsm_check_degraded(super, dev, failed); | |
5802a811 | 2442 | |
0c046afd DW |
2443 | /* check if recovery complete, newly degraded, or failed */ |
2444 | if (map_state == IMSM_T_STATE_NORMAL && is_rebuilding(dev)) { | |
2445 | map->map_state = map_state; | |
2446 | dev->vol.migr_state = 0; | |
2447 | super->updates_pending++; | |
2448 | } else if (map_state == IMSM_T_STATE_DEGRADED && | |
2449 | map->map_state != map_state && | |
2450 | !dev->vol.migr_state) { | |
2451 | dprintf("imsm: mark degraded\n"); | |
2452 | map->map_state = map_state; | |
2453 | super->updates_pending++; | |
2454 | } else if (map_state == IMSM_T_STATE_FAILED && | |
2455 | map->map_state != map_state) { | |
2456 | dprintf("imsm: mark failed\n"); | |
2457 | dev->vol.migr_state = 0; | |
2458 | map->map_state = map_state; | |
2459 | super->updates_pending++; | |
5802a811 | 2460 | } |
845dea95 NB |
2461 | } |
2462 | ||
c2a1e7da DW |
2463 | static int store_imsm_mpb(int fd, struct intel_super *super) |
2464 | { | |
949c47a0 | 2465 | struct imsm_super *mpb = super->anchor; |
c2a1e7da DW |
2466 | __u32 mpb_size = __le32_to_cpu(mpb->mpb_size); |
2467 | unsigned long long dsize; | |
2468 | unsigned long long sectors; | |
2469 | ||
2470 | get_dev_size(fd, NULL, &dsize); | |
2471 | ||
272f648f DW |
2472 | if (mpb_size > 512) { |
2473 | /* -1 to account for anchor */ | |
2474 | sectors = mpb_sectors(mpb) - 1; | |
c2a1e7da | 2475 | |
272f648f DW |
2476 | /* write the extended mpb to the sectors preceeding the anchor */ |
2477 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) | |
2478 | return 1; | |
c2a1e7da | 2479 | |
99e29264 | 2480 | if (write(fd, super->buf + 512, 512 * sectors) != 512 * sectors) |
272f648f DW |
2481 | return 1; |
2482 | } | |
c2a1e7da | 2483 | |
272f648f DW |
2484 | /* first block is stored on second to last sector of the disk */ |
2485 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
c2a1e7da DW |
2486 | return 1; |
2487 | ||
272f648f | 2488 | if (write(fd, super->buf, 512) != 512) |
c2a1e7da DW |
2489 | return 1; |
2490 | ||
c2a1e7da DW |
2491 | return 0; |
2492 | } | |
2493 | ||
2e735d19 | 2494 | static void imsm_sync_metadata(struct supertype *container) |
845dea95 | 2495 | { |
2e735d19 | 2496 | struct intel_super *super = container->sb; |
c2a1e7da DW |
2497 | |
2498 | if (!super->updates_pending) | |
2499 | return; | |
2500 | ||
c2c087e6 | 2501 | write_super_imsm(super, 0); |
c2a1e7da DW |
2502 | |
2503 | super->updates_pending = 0; | |
845dea95 NB |
2504 | } |
2505 | ||
272906ef DW |
2506 | static struct dl *imsm_readd(struct intel_super *super, int idx, struct active_array *a) |
2507 | { | |
2508 | struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member); | |
ff077194 | 2509 | int i = get_imsm_disk_idx(dev, idx); |
272906ef DW |
2510 | struct dl *dl; |
2511 | ||
2512 | for (dl = super->disks; dl; dl = dl->next) | |
2513 | if (dl->index == i) | |
2514 | break; | |
2515 | ||
8796fdc4 | 2516 | if (dl && __le32_to_cpu(dl->disk.status) & FAILED_DISK) |
272906ef DW |
2517 | dl = NULL; |
2518 | ||
2519 | if (dl) | |
2520 | dprintf("%s: found %x:%x\n", __func__, dl->major, dl->minor); | |
2521 | ||
2522 | return dl; | |
2523 | } | |
2524 | ||
e553d2a4 | 2525 | static struct dl *imsm_add_spare(struct intel_super *super, int slot, struct active_array *a) |
272906ef DW |
2526 | { |
2527 | struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member); | |
e553d2a4 | 2528 | int idx = get_imsm_disk_idx(dev, slot); |
272906ef DW |
2529 | struct imsm_map *map = get_imsm_map(dev, 0); |
2530 | unsigned long long esize; | |
2531 | unsigned long long pos; | |
2532 | struct mdinfo *d; | |
2533 | struct extent *ex; | |
2534 | int j; | |
2535 | int found; | |
2536 | __u32 array_start; | |
9a1608e5 | 2537 | __u32 status; |
272906ef DW |
2538 | struct dl *dl; |
2539 | ||
2540 | for (dl = super->disks; dl; dl = dl->next) { | |
2541 | /* If in this array, skip */ | |
2542 | for (d = a->info.devs ; d ; d = d->next) | |
e553d2a4 DW |
2543 | if (d->state_fd >= 0 && |
2544 | d->disk.major == dl->major && | |
272906ef DW |
2545 | d->disk.minor == dl->minor) { |
2546 | dprintf("%x:%x already in array\n", dl->major, dl->minor); | |
2547 | break; | |
2548 | } | |
2549 | if (d) | |
2550 | continue; | |
2551 | ||
e553d2a4 | 2552 | /* skip in use or failed drives */ |
9a1608e5 | 2553 | status = __le32_to_cpu(dl->disk.status); |
e553d2a4 | 2554 | if (status & FAILED_DISK || idx == dl->index) { |
9a1608e5 DW |
2555 | dprintf("%x:%x status ( %s%s)\n", |
2556 | dl->major, dl->minor, | |
2557 | status & FAILED_DISK ? "failed " : "", | |
e553d2a4 | 2558 | idx == dl->index ? "in use " : ""); |
9a1608e5 DW |
2559 | continue; |
2560 | } | |
2561 | ||
272906ef DW |
2562 | /* Does this unused device have the requisite free space? |
2563 | * We need a->info.component_size sectors | |
2564 | */ | |
2565 | ex = get_extents(super, dl); | |
2566 | if (!ex) { | |
2567 | dprintf("cannot get extents\n"); | |
2568 | continue; | |
2569 | } | |
2570 | found = 0; | |
2571 | j = 0; | |
2572 | pos = 0; | |
2573 | array_start = __le32_to_cpu(map->pba_of_lba0); | |
2574 | ||
2575 | do { | |
2576 | /* check that we can start at pba_of_lba0 with | |
2577 | * a->info.component_size of space | |
2578 | */ | |
2579 | esize = ex[j].start - pos; | |
2580 | if (array_start >= pos && | |
2581 | array_start + a->info.component_size < ex[j].start) { | |
2582 | found = 1; | |
2583 | break; | |
2584 | } | |
2585 | pos = ex[j].start + ex[j].size; | |
2586 | j++; | |
2587 | ||
2588 | } while (ex[j-1].size); | |
2589 | ||
2590 | free(ex); | |
2591 | if (!found) { | |
2592 | dprintf("%x:%x does not have %llu at %d\n", | |
2593 | dl->major, dl->minor, | |
2594 | a->info.component_size, | |
2595 | __le32_to_cpu(map->pba_of_lba0)); | |
2596 | /* No room */ | |
2597 | continue; | |
2598 | } else | |
2599 | break; | |
2600 | } | |
2601 | ||
2602 | return dl; | |
2603 | } | |
2604 | ||
88758e9d DW |
2605 | static struct mdinfo *imsm_activate_spare(struct active_array *a, |
2606 | struct metadata_update **updates) | |
2607 | { | |
2608 | /** | |
d23fe947 DW |
2609 | * Find a device with unused free space and use it to replace a |
2610 | * failed/vacant region in an array. We replace failed regions one a | |
2611 | * array at a time. The result is that a new spare disk will be added | |
2612 | * to the first failed array and after the monitor has finished | |
2613 | * propagating failures the remainder will be consumed. | |
88758e9d | 2614 | * |
d23fe947 DW |
2615 | * FIXME add a capability for mdmon to request spares from another |
2616 | * container. | |
88758e9d DW |
2617 | */ |
2618 | ||
2619 | struct intel_super *super = a->container->sb; | |
88758e9d | 2620 | int inst = a->info.container_member; |
949c47a0 | 2621 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
a965f303 | 2622 | struct imsm_map *map = get_imsm_map(dev, 0); |
88758e9d DW |
2623 | int failed = a->info.array.raid_disks; |
2624 | struct mdinfo *rv = NULL; | |
2625 | struct mdinfo *d; | |
2626 | struct mdinfo *di; | |
2627 | struct metadata_update *mu; | |
2628 | struct dl *dl; | |
2629 | struct imsm_update_activate_spare *u; | |
2630 | int num_spares = 0; | |
2631 | int i; | |
2632 | ||
2633 | for (d = a->info.devs ; d ; d = d->next) { | |
2634 | if ((d->curr_state & DS_FAULTY) && | |
2635 | d->state_fd >= 0) | |
2636 | /* wait for Removal to happen */ | |
2637 | return NULL; | |
2638 | if (d->state_fd >= 0) | |
2639 | failed--; | |
2640 | } | |
2641 | ||
2642 | dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n", | |
2643 | inst, failed, a->info.array.raid_disks, a->info.array.level); | |
fb49eef2 | 2644 | if (imsm_check_degraded(super, dev, failed) != IMSM_T_STATE_DEGRADED) |
88758e9d DW |
2645 | return NULL; |
2646 | ||
2647 | /* For each slot, if it is not working, find a spare */ | |
88758e9d DW |
2648 | for (i = 0; i < a->info.array.raid_disks; i++) { |
2649 | for (d = a->info.devs ; d ; d = d->next) | |
2650 | if (d->disk.raid_disk == i) | |
2651 | break; | |
2652 | dprintf("found %d: %p %x\n", i, d, d?d->curr_state:0); | |
2653 | if (d && (d->state_fd >= 0)) | |
2654 | continue; | |
2655 | ||
272906ef DW |
2656 | /* |
2657 | * OK, this device needs recovery. Try to re-add the previous | |
2658 | * occupant of this slot, if this fails add a new spare | |
2659 | */ | |
2660 | dl = imsm_readd(super, i, a); | |
2661 | if (!dl) | |
2662 | dl = imsm_add_spare(super, i, a); | |
2663 | if (!dl) | |
2664 | continue; | |
2665 | ||
2666 | /* found a usable disk with enough space */ | |
2667 | di = malloc(sizeof(*di)); | |
2668 | memset(di, 0, sizeof(*di)); | |
2669 | ||
2670 | /* dl->index will be -1 in the case we are activating a | |
2671 | * pristine spare. imsm_process_update() will create a | |
2672 | * new index in this case. Once a disk is found to be | |
2673 | * failed in all member arrays it is kicked from the | |
2674 | * metadata | |
2675 | */ | |
2676 | di->disk.number = dl->index; | |
d23fe947 | 2677 | |
272906ef DW |
2678 | /* (ab)use di->devs to store a pointer to the device |
2679 | * we chose | |
2680 | */ | |
2681 | di->devs = (struct mdinfo *) dl; | |
2682 | ||
2683 | di->disk.raid_disk = i; | |
2684 | di->disk.major = dl->major; | |
2685 | di->disk.minor = dl->minor; | |
2686 | di->disk.state = 0; | |
2687 | di->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
2688 | di->component_size = a->info.component_size; | |
2689 | di->container_member = inst; | |
2690 | di->next = rv; | |
2691 | rv = di; | |
2692 | num_spares++; | |
2693 | dprintf("%x:%x to be %d at %llu\n", dl->major, dl->minor, | |
2694 | i, di->data_offset); | |
88758e9d | 2695 | |
272906ef | 2696 | break; |
88758e9d DW |
2697 | } |
2698 | ||
2699 | if (!rv) | |
2700 | /* No spares found */ | |
2701 | return rv; | |
2702 | /* Now 'rv' has a list of devices to return. | |
2703 | * Create a metadata_update record to update the | |
2704 | * disk_ord_tbl for the array | |
2705 | */ | |
2706 | mu = malloc(sizeof(*mu)); | |
2707 | mu->buf = malloc(sizeof(struct imsm_update_activate_spare) * num_spares); | |
2708 | mu->space = NULL; | |
2709 | mu->len = sizeof(struct imsm_update_activate_spare) * num_spares; | |
2710 | mu->next = *updates; | |
2711 | u = (struct imsm_update_activate_spare *) mu->buf; | |
2712 | ||
2713 | for (di = rv ; di ; di = di->next) { | |
2714 | u->type = update_activate_spare; | |
d23fe947 DW |
2715 | u->dl = (struct dl *) di->devs; |
2716 | di->devs = NULL; | |
88758e9d DW |
2717 | u->slot = di->disk.raid_disk; |
2718 | u->array = inst; | |
2719 | u->next = u + 1; | |
2720 | u++; | |
2721 | } | |
2722 | (u-1)->next = NULL; | |
2723 | *updates = mu; | |
2724 | ||
2725 | return rv; | |
2726 | } | |
2727 | ||
ff077194 | 2728 | static int disks_overlap(struct imsm_dev *d1, struct imsm_dev *d2) |
8273f55e | 2729 | { |
ff077194 DW |
2730 | struct imsm_map *m1 = get_imsm_map(d1, 0); |
2731 | struct imsm_map *m2 = get_imsm_map(d2, 0); | |
8273f55e DW |
2732 | int i; |
2733 | int j; | |
2734 | int idx; | |
2735 | ||
2736 | for (i = 0; i < m1->num_members; i++) { | |
ff077194 | 2737 | idx = get_imsm_disk_idx(d1, i); |
8273f55e | 2738 | for (j = 0; j < m2->num_members; j++) |
ff077194 | 2739 | if (idx == get_imsm_disk_idx(d2, j)) |
8273f55e DW |
2740 | return 1; |
2741 | } | |
2742 | ||
2743 | return 0; | |
2744 | } | |
2745 | ||
24565c9a | 2746 | static void imsm_delete(struct intel_super *super, struct dl **dlp, int index); |
ae6aad82 | 2747 | |
e8319a19 DW |
2748 | static void imsm_process_update(struct supertype *st, |
2749 | struct metadata_update *update) | |
2750 | { | |
2751 | /** | |
2752 | * crack open the metadata_update envelope to find the update record | |
2753 | * update can be one of: | |
2754 | * update_activate_spare - a spare device has replaced a failed | |
2755 | * device in an array, update the disk_ord_tbl. If this disk is | |
2756 | * present in all member arrays then also clear the SPARE_DISK | |
2757 | * flag | |
2758 | */ | |
2759 | struct intel_super *super = st->sb; | |
4d7b1503 | 2760 | struct imsm_super *mpb; |
e8319a19 DW |
2761 | enum imsm_update_type type = *(enum imsm_update_type *) update->buf; |
2762 | ||
4d7b1503 DW |
2763 | /* update requires a larger buf but the allocation failed */ |
2764 | if (super->next_len && !super->next_buf) { | |
2765 | super->next_len = 0; | |
2766 | return; | |
2767 | } | |
2768 | ||
2769 | if (super->next_buf) { | |
2770 | memcpy(super->next_buf, super->buf, super->len); | |
2771 | free(super->buf); | |
2772 | super->len = super->next_len; | |
2773 | super->buf = super->next_buf; | |
2774 | ||
2775 | super->next_len = 0; | |
2776 | super->next_buf = NULL; | |
2777 | } | |
2778 | ||
2779 | mpb = super->anchor; | |
2780 | ||
e8319a19 DW |
2781 | switch (type) { |
2782 | case update_activate_spare: { | |
2783 | struct imsm_update_activate_spare *u = (void *) update->buf; | |
949c47a0 | 2784 | struct imsm_dev *dev = get_imsm_dev(super, u->array); |
a965f303 | 2785 | struct imsm_map *map = get_imsm_map(dev, 0); |
0c046afd | 2786 | struct imsm_map *migr_map; |
e8319a19 DW |
2787 | struct active_array *a; |
2788 | struct imsm_disk *disk; | |
2789 | __u32 status; | |
0c046afd | 2790 | __u8 to_state; |
e8319a19 | 2791 | struct dl *dl; |
e8319a19 | 2792 | unsigned int found; |
0c046afd DW |
2793 | int failed; |
2794 | int victim = get_imsm_disk_idx(dev, u->slot); | |
e8319a19 DW |
2795 | int i; |
2796 | ||
2797 | for (dl = super->disks; dl; dl = dl->next) | |
d23fe947 | 2798 | if (dl == u->dl) |
e8319a19 DW |
2799 | break; |
2800 | ||
2801 | if (!dl) { | |
2802 | fprintf(stderr, "error: imsm_activate_spare passed " | |
1f24f035 DW |
2803 | "an unknown disk (index: %d)\n", |
2804 | u->dl->index); | |
e8319a19 DW |
2805 | return; |
2806 | } | |
2807 | ||
2808 | super->updates_pending++; | |
2809 | ||
0c046afd DW |
2810 | /* count failures (excluding rebuilds and the victim) |
2811 | * to determine map[0] state | |
2812 | */ | |
2813 | failed = 0; | |
2814 | for (i = 0; i < map->num_members; i++) { | |
2815 | if (i == u->slot) | |
2816 | continue; | |
2817 | disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i)); | |
2818 | if (!disk || | |
2819 | __le32_to_cpu(disk->status) & FAILED_DISK) | |
2820 | failed++; | |
2821 | } | |
2822 | ||
d23fe947 DW |
2823 | /* adding a pristine spare, assign a new index */ |
2824 | if (dl->index < 0) { | |
2825 | dl->index = super->anchor->num_disks; | |
2826 | super->anchor->num_disks++; | |
2827 | } | |
d23fe947 | 2828 | disk = &dl->disk; |
e8319a19 DW |
2829 | status = __le32_to_cpu(disk->status); |
2830 | status |= CONFIGURED_DISK; | |
b10b37b8 | 2831 | status &= ~SPARE_DISK; |
e8319a19 DW |
2832 | disk->status = __cpu_to_le32(status); |
2833 | ||
0c046afd DW |
2834 | /* mark rebuild */ |
2835 | to_state = imsm_check_degraded(super, dev, failed); | |
2836 | map->map_state = IMSM_T_STATE_DEGRADED; | |
2837 | migrate(dev, to_state, 1); | |
2838 | migr_map = get_imsm_map(dev, 1); | |
2839 | set_imsm_ord_tbl_ent(map, u->slot, dl->index); | |
2840 | set_imsm_ord_tbl_ent(migr_map, u->slot, dl->index | IMSM_ORD_REBUILD); | |
2841 | ||
e8319a19 DW |
2842 | /* count arrays using the victim in the metadata */ |
2843 | found = 0; | |
2844 | for (a = st->arrays; a ; a = a->next) { | |
949c47a0 | 2845 | dev = get_imsm_dev(super, a->info.container_member); |
e8319a19 | 2846 | for (i = 0; i < map->num_members; i++) |
ff077194 | 2847 | if (victim == get_imsm_disk_idx(dev, i)) |
e8319a19 DW |
2848 | found++; |
2849 | } | |
2850 | ||
24565c9a | 2851 | /* delete the victim if it is no longer being |
e8319a19 DW |
2852 | * utilized anywhere |
2853 | */ | |
e8319a19 | 2854 | if (!found) { |
ae6aad82 | 2855 | struct dl **dlp; |
24565c9a DW |
2856 | |
2857 | for (dlp = &super->disks; *dlp; dlp = &(*dlp)->next) | |
ae6aad82 DW |
2858 | if ((*dlp)->index == victim) |
2859 | break; | |
ae6aad82 DW |
2860 | /* We know that 'manager' isn't touching anything, |
2861 | * so it is safe to: | |
2862 | */ | |
24565c9a | 2863 | imsm_delete(super, dlp, victim); |
e8319a19 | 2864 | } |
8273f55e DW |
2865 | break; |
2866 | } | |
2867 | case update_create_array: { | |
2868 | /* someone wants to create a new array, we need to be aware of | |
2869 | * a few races/collisions: | |
2870 | * 1/ 'Create' called by two separate instances of mdadm | |
2871 | * 2/ 'Create' versus 'activate_spare': mdadm has chosen | |
2872 | * devices that have since been assimilated via | |
2873 | * activate_spare. | |
2874 | * In the event this update can not be carried out mdadm will | |
2875 | * (FIX ME) notice that its update did not take hold. | |
2876 | */ | |
2877 | struct imsm_update_create_array *u = (void *) update->buf; | |
2878 | struct imsm_dev *dev; | |
2879 | struct imsm_map *map, *new_map; | |
2880 | unsigned long long start, end; | |
2881 | unsigned long long new_start, new_end; | |
2882 | int i; | |
2883 | int overlap = 0; | |
2884 | ||
2885 | /* handle racing creates: first come first serve */ | |
2886 | if (u->dev_idx < mpb->num_raid_devs) { | |
2887 | dprintf("%s: subarray %d already defined\n", | |
2888 | __func__, u->dev_idx); | |
2889 | return; | |
2890 | } | |
2891 | ||
2892 | /* check update is next in sequence */ | |
2893 | if (u->dev_idx != mpb->num_raid_devs) { | |
6a3e913e DW |
2894 | dprintf("%s: can not create array %d expected index %d\n", |
2895 | __func__, u->dev_idx, mpb->num_raid_devs); | |
8273f55e DW |
2896 | return; |
2897 | } | |
2898 | ||
a965f303 | 2899 | new_map = get_imsm_map(&u->dev, 0); |
8273f55e DW |
2900 | new_start = __le32_to_cpu(new_map->pba_of_lba0); |
2901 | new_end = new_start + __le32_to_cpu(new_map->blocks_per_member); | |
2902 | ||
2903 | /* handle activate_spare versus create race: | |
2904 | * check to make sure that overlapping arrays do not include | |
2905 | * overalpping disks | |
2906 | */ | |
2907 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
949c47a0 | 2908 | dev = get_imsm_dev(super, i); |
a965f303 | 2909 | map = get_imsm_map(dev, 0); |
8273f55e DW |
2910 | start = __le32_to_cpu(map->pba_of_lba0); |
2911 | end = start + __le32_to_cpu(map->blocks_per_member); | |
2912 | if ((new_start >= start && new_start <= end) || | |
2913 | (start >= new_start && start <= new_end)) | |
2914 | overlap = 1; | |
ff077194 | 2915 | if (overlap && disks_overlap(dev, &u->dev)) { |
8273f55e DW |
2916 | dprintf("%s: arrays overlap\n", __func__); |
2917 | return; | |
2918 | } | |
2919 | } | |
2920 | /* check num_members sanity */ | |
2921 | if (new_map->num_members > mpb->num_disks) { | |
2922 | dprintf("%s: num_disks out of range\n", __func__); | |
2923 | return; | |
2924 | } | |
2925 | ||
949c47a0 DW |
2926 | /* check that prepare update was successful */ |
2927 | if (!update->space) { | |
2928 | dprintf("%s: prepare update failed\n", __func__); | |
2929 | return; | |
2930 | } | |
2931 | ||
8273f55e | 2932 | super->updates_pending++; |
949c47a0 | 2933 | dev = update->space; |
ff077194 | 2934 | map = get_imsm_map(dev, 0); |
949c47a0 DW |
2935 | update->space = NULL; |
2936 | imsm_copy_dev(dev, &u->dev); | |
e0783b41 | 2937 | map = get_imsm_map(dev, 0); |
949c47a0 | 2938 | super->dev_tbl[u->dev_idx] = dev; |
8273f55e | 2939 | mpb->num_raid_devs++; |
8273f55e | 2940 | |
e0783b41 | 2941 | /* fix up flags */ |
8273f55e DW |
2942 | for (i = 0; i < map->num_members; i++) { |
2943 | struct imsm_disk *disk; | |
2944 | __u32 status; | |
2945 | ||
ff077194 | 2946 | disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i)); |
8273f55e DW |
2947 | status = __le32_to_cpu(disk->status); |
2948 | status |= CONFIGURED_DISK; | |
e0783b41 | 2949 | status &= ~SPARE_DISK; |
8273f55e DW |
2950 | disk->status = __cpu_to_le32(status); |
2951 | } | |
2952 | break; | |
e8319a19 | 2953 | } |
43dad3d6 DW |
2954 | case update_add_disk: |
2955 | ||
2956 | /* we may be able to repair some arrays if disks are | |
2957 | * being added */ | |
2958 | if (super->add) { | |
2959 | struct active_array *a; | |
2960 | for (a = st->arrays; a; a = a->next) | |
2961 | a->check_degraded = 1; | |
2962 | } | |
e553d2a4 | 2963 | /* add some spares to the metadata */ |
43dad3d6 | 2964 | while (super->add) { |
e553d2a4 DW |
2965 | struct dl *al; |
2966 | ||
43dad3d6 DW |
2967 | al = super->add; |
2968 | super->add = al->next; | |
43dad3d6 DW |
2969 | al->next = super->disks; |
2970 | super->disks = al; | |
e553d2a4 DW |
2971 | dprintf("%s: added %x:%x\n", |
2972 | __func__, al->major, al->minor); | |
43dad3d6 DW |
2973 | } |
2974 | ||
2975 | break; | |
e8319a19 DW |
2976 | } |
2977 | } | |
88758e9d | 2978 | |
8273f55e DW |
2979 | static void imsm_prepare_update(struct supertype *st, |
2980 | struct metadata_update *update) | |
2981 | { | |
949c47a0 | 2982 | /** |
4d7b1503 DW |
2983 | * Allocate space to hold new disk entries, raid-device entries or a new |
2984 | * mpb if necessary. The manager synchronously waits for updates to | |
2985 | * complete in the monitor, so new mpb buffers allocated here can be | |
2986 | * integrated by the monitor thread without worrying about live pointers | |
2987 | * in the manager thread. | |
8273f55e | 2988 | */ |
949c47a0 | 2989 | enum imsm_update_type type = *(enum imsm_update_type *) update->buf; |
4d7b1503 DW |
2990 | struct intel_super *super = st->sb; |
2991 | struct imsm_super *mpb = super->anchor; | |
2992 | size_t buf_len; | |
2993 | size_t len = 0; | |
949c47a0 DW |
2994 | |
2995 | switch (type) { | |
2996 | case update_create_array: { | |
2997 | struct imsm_update_create_array *u = (void *) update->buf; | |
949c47a0 | 2998 | |
4d7b1503 | 2999 | len = sizeof_imsm_dev(&u->dev, 1); |
949c47a0 DW |
3000 | update->space = malloc(len); |
3001 | break; | |
3002 | default: | |
3003 | break; | |
3004 | } | |
3005 | } | |
8273f55e | 3006 | |
4d7b1503 DW |
3007 | /* check if we need a larger metadata buffer */ |
3008 | if (super->next_buf) | |
3009 | buf_len = super->next_len; | |
3010 | else | |
3011 | buf_len = super->len; | |
3012 | ||
3013 | if (__le32_to_cpu(mpb->mpb_size) + len > buf_len) { | |
3014 | /* ok we need a larger buf than what is currently allocated | |
3015 | * if this allocation fails process_update will notice that | |
3016 | * ->next_len is set and ->next_buf is NULL | |
3017 | */ | |
3018 | buf_len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + len, 512); | |
3019 | if (super->next_buf) | |
3020 | free(super->next_buf); | |
3021 | ||
3022 | super->next_len = buf_len; | |
3023 | if (posix_memalign(&super->next_buf, buf_len, 512) != 0) | |
3024 | super->next_buf = NULL; | |
3025 | } | |
8273f55e DW |
3026 | } |
3027 | ||
ae6aad82 | 3028 | /* must be called while manager is quiesced */ |
24565c9a | 3029 | static void imsm_delete(struct intel_super *super, struct dl **dlp, int index) |
ae6aad82 DW |
3030 | { |
3031 | struct imsm_super *mpb = super->anchor; | |
ae6aad82 DW |
3032 | struct dl *iter; |
3033 | struct imsm_dev *dev; | |
3034 | struct imsm_map *map; | |
24565c9a DW |
3035 | int i, j, num_members; |
3036 | __u32 ord; | |
ae6aad82 | 3037 | |
24565c9a DW |
3038 | dprintf("%s: deleting device[%d] from imsm_super\n", |
3039 | __func__, index); | |
ae6aad82 DW |
3040 | |
3041 | /* shift all indexes down one */ | |
3042 | for (iter = super->disks; iter; iter = iter->next) | |
24565c9a | 3043 | if (iter->index > index) |
ae6aad82 DW |
3044 | iter->index--; |
3045 | ||
3046 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
3047 | dev = get_imsm_dev(super, i); | |
3048 | map = get_imsm_map(dev, 0); | |
24565c9a DW |
3049 | num_members = map->num_members; |
3050 | for (j = 0; j < num_members; j++) { | |
3051 | /* update ord entries being careful not to propagate | |
3052 | * ord-flags to the first map | |
3053 | */ | |
3054 | ord = get_imsm_ord_tbl_ent(dev, j); | |
ae6aad82 | 3055 | |
24565c9a DW |
3056 | if (ord_to_idx(ord) <= index) |
3057 | continue; | |
ae6aad82 | 3058 | |
24565c9a DW |
3059 | map = get_imsm_map(dev, 0); |
3060 | set_imsm_ord_tbl_ent(map, j, ord_to_idx(ord - 1)); | |
3061 | map = get_imsm_map(dev, 1); | |
3062 | if (map) | |
3063 | set_imsm_ord_tbl_ent(map, j, ord - 1); | |
ae6aad82 DW |
3064 | } |
3065 | } | |
3066 | ||
3067 | mpb->num_disks--; | |
3068 | super->updates_pending++; | |
24565c9a DW |
3069 | if (*dlp) { |
3070 | struct dl *dl = *dlp; | |
3071 | ||
3072 | *dlp = (*dlp)->next; | |
3073 | __free_imsm_disk(dl); | |
3074 | } | |
ae6aad82 | 3075 | } |
0e600426 | 3076 | #endif /* MDASSEMBLE */ |
ae6aad82 | 3077 | |
cdddbdbc DW |
3078 | struct superswitch super_imsm = { |
3079 | #ifndef MDASSEMBLE | |
3080 | .examine_super = examine_super_imsm, | |
3081 | .brief_examine_super = brief_examine_super_imsm, | |
3082 | .detail_super = detail_super_imsm, | |
3083 | .brief_detail_super = brief_detail_super_imsm, | |
bf5a934a | 3084 | .write_init_super = write_init_super_imsm, |
0e600426 N |
3085 | .validate_geometry = validate_geometry_imsm, |
3086 | .add_to_super = add_to_super_imsm, | |
cdddbdbc DW |
3087 | #endif |
3088 | .match_home = match_home_imsm, | |
3089 | .uuid_from_super= uuid_from_super_imsm, | |
3090 | .getinfo_super = getinfo_super_imsm, | |
3091 | .update_super = update_super_imsm, | |
3092 | ||
3093 | .avail_size = avail_size_imsm, | |
3094 | ||
3095 | .compare_super = compare_super_imsm, | |
3096 | ||
3097 | .load_super = load_super_imsm, | |
bf5a934a | 3098 | .init_super = init_super_imsm, |
cdddbdbc DW |
3099 | .store_super = store_zero_imsm, |
3100 | .free_super = free_super_imsm, | |
3101 | .match_metadata_desc = match_metadata_desc_imsm, | |
bf5a934a | 3102 | .container_content = container_content_imsm, |
cdddbdbc | 3103 | |
cdddbdbc | 3104 | .external = 1, |
845dea95 | 3105 | |
0e600426 | 3106 | #ifndef MDASSEMBLE |
845dea95 NB |
3107 | /* for mdmon */ |
3108 | .open_new = imsm_open_new, | |
3109 | .load_super = load_super_imsm, | |
ed9d66aa | 3110 | .set_array_state= imsm_set_array_state, |
845dea95 NB |
3111 | .set_disk = imsm_set_disk, |
3112 | .sync_metadata = imsm_sync_metadata, | |
88758e9d | 3113 | .activate_spare = imsm_activate_spare, |
e8319a19 | 3114 | .process_update = imsm_process_update, |
8273f55e | 3115 | .prepare_update = imsm_prepare_update, |
0e600426 | 3116 | #endif /* MDASSEMBLE */ |
cdddbdbc | 3117 | }; |