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Commit | Line | Data |
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cdddbdbc DW |
1 | /* |
2 | * mdadm - Intel(R) Matrix Storage Manager Support | |
3 | * | |
a54d5262 | 4 | * Copyright (C) 2002-2008 Intel Corporation |
cdddbdbc DW |
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 | ||
51006d85 | 20 | #define HAVE_STDINT_H 1 |
cdddbdbc | 21 | #include "mdadm.h" |
c2a1e7da | 22 | #include "mdmon.h" |
51006d85 | 23 | #include "sha1.h" |
88c32bb1 | 24 | #include "platform-intel.h" |
cdddbdbc DW |
25 | #include <values.h> |
26 | #include <scsi/sg.h> | |
27 | #include <ctype.h> | |
d665cc31 | 28 | #include <dirent.h> |
cdddbdbc DW |
29 | |
30 | /* MPB == Metadata Parameter Block */ | |
31 | #define MPB_SIGNATURE "Intel Raid ISM Cfg Sig. " | |
32 | #define MPB_SIG_LEN (strlen(MPB_SIGNATURE)) | |
33 | #define MPB_VERSION_RAID0 "1.0.00" | |
34 | #define MPB_VERSION_RAID1 "1.1.00" | |
fe7ed8cb DW |
35 | #define MPB_VERSION_MANY_VOLUMES_PER_ARRAY "1.2.00" |
36 | #define MPB_VERSION_3OR4_DISK_ARRAY "1.2.01" | |
cdddbdbc | 37 | #define MPB_VERSION_RAID5 "1.2.02" |
fe7ed8cb DW |
38 | #define MPB_VERSION_5OR6_DISK_ARRAY "1.2.04" |
39 | #define MPB_VERSION_CNG "1.2.06" | |
40 | #define MPB_VERSION_ATTRIBS "1.3.00" | |
cdddbdbc DW |
41 | #define MAX_SIGNATURE_LENGTH 32 |
42 | #define MAX_RAID_SERIAL_LEN 16 | |
fe7ed8cb DW |
43 | |
44 | #define MPB_ATTRIB_CHECKSUM_VERIFY __cpu_to_le32(0x80000000) | |
45 | #define MPB_ATTRIB_PM __cpu_to_le32(0x40000000) | |
46 | #define MPB_ATTRIB_2TB __cpu_to_le32(0x20000000) | |
47 | #define MPB_ATTRIB_RAID0 __cpu_to_le32(0x00000001) | |
48 | #define MPB_ATTRIB_RAID1 __cpu_to_le32(0x00000002) | |
49 | #define MPB_ATTRIB_RAID10 __cpu_to_le32(0x00000004) | |
50 | #define MPB_ATTRIB_RAID1E __cpu_to_le32(0x00000008) | |
51 | #define MPB_ATTRIB_RAID5 __cpu_to_le32(0x00000010) | |
52 | #define MPB_ATTRIB_RAIDCNG __cpu_to_le32(0x00000020) | |
53 | ||
c2c087e6 DW |
54 | #define MPB_SECTOR_CNT 418 |
55 | #define IMSM_RESERVED_SECTORS 4096 | |
cdddbdbc DW |
56 | |
57 | /* Disk configuration info. */ | |
58 | #define IMSM_MAX_DEVICES 255 | |
59 | struct imsm_disk { | |
60 | __u8 serial[MAX_RAID_SERIAL_LEN];/* 0xD8 - 0xE7 ascii serial number */ | |
61 | __u32 total_blocks; /* 0xE8 - 0xEB total blocks */ | |
62 | __u32 scsi_id; /* 0xEC - 0xEF scsi ID */ | |
f2f27e63 DW |
63 | #define SPARE_DISK __cpu_to_le32(0x01) /* Spare */ |
64 | #define CONFIGURED_DISK __cpu_to_le32(0x02) /* Member of some RaidDev */ | |
65 | #define FAILED_DISK __cpu_to_le32(0x04) /* Permanent failure */ | |
66 | #define USABLE_DISK __cpu_to_le32(0x08) /* Fully usable unless FAILED_DISK is set */ | |
cdddbdbc | 67 | __u32 status; /* 0xF0 - 0xF3 */ |
fe7ed8cb DW |
68 | __u32 owner_cfg_num; /* which config 0,1,2... owns this disk */ |
69 | #define IMSM_DISK_FILLERS 4 | |
cdddbdbc DW |
70 | __u32 filler[IMSM_DISK_FILLERS]; /* 0xF4 - 0x107 MPB_DISK_FILLERS for future expansion */ |
71 | }; | |
72 | ||
73 | /* RAID map configuration infos. */ | |
74 | struct imsm_map { | |
75 | __u32 pba_of_lba0; /* start address of partition */ | |
76 | __u32 blocks_per_member;/* blocks per member */ | |
77 | __u32 num_data_stripes; /* number of data stripes */ | |
78 | __u16 blocks_per_strip; | |
79 | __u8 map_state; /* Normal, Uninitialized, Degraded, Failed */ | |
80 | #define IMSM_T_STATE_NORMAL 0 | |
81 | #define IMSM_T_STATE_UNINITIALIZED 1 | |
e3bba0e0 DW |
82 | #define IMSM_T_STATE_DEGRADED 2 |
83 | #define IMSM_T_STATE_FAILED 3 | |
cdddbdbc DW |
84 | __u8 raid_level; |
85 | #define IMSM_T_RAID0 0 | |
86 | #define IMSM_T_RAID1 1 | |
87 | #define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */ | |
88 | __u8 num_members; /* number of member disks */ | |
fe7ed8cb DW |
89 | __u8 num_domains; /* number of parity domains */ |
90 | __u8 failed_disk_num; /* valid only when state is degraded */ | |
91 | __u8 reserved[1]; | |
cdddbdbc | 92 | __u32 filler[7]; /* expansion area */ |
7eef0453 | 93 | #define IMSM_ORD_REBUILD (1 << 24) |
cdddbdbc | 94 | __u32 disk_ord_tbl[1]; /* disk_ord_tbl[num_members], |
7eef0453 DW |
95 | * top byte contains some flags |
96 | */ | |
cdddbdbc DW |
97 | } __attribute__ ((packed)); |
98 | ||
99 | struct imsm_vol { | |
f8f603f1 | 100 | __u32 curr_migr_unit; |
fe7ed8cb | 101 | __u32 checkpoint_id; /* id to access curr_migr_unit */ |
cdddbdbc | 102 | __u8 migr_state; /* Normal or Migrating */ |
e3bba0e0 DW |
103 | #define MIGR_INIT 0 |
104 | #define MIGR_REBUILD 1 | |
105 | #define MIGR_VERIFY 2 /* analagous to echo check > sync_action */ | |
106 | #define MIGR_GEN_MIGR 3 | |
107 | #define MIGR_STATE_CHANGE 4 | |
cdddbdbc DW |
108 | __u8 migr_type; /* Initializing, Rebuilding, ... */ |
109 | __u8 dirty; | |
fe7ed8cb DW |
110 | __u8 fs_state; /* fast-sync state for CnG (0xff == disabled) */ |
111 | __u16 verify_errors; /* number of mismatches */ | |
112 | __u16 bad_blocks; /* number of bad blocks during verify */ | |
113 | __u32 filler[4]; | |
cdddbdbc DW |
114 | struct imsm_map map[1]; |
115 | /* here comes another one if migr_state */ | |
116 | } __attribute__ ((packed)); | |
117 | ||
118 | struct imsm_dev { | |
fe7ed8cb | 119 | __u8 volume[MAX_RAID_SERIAL_LEN]; |
cdddbdbc DW |
120 | __u32 size_low; |
121 | __u32 size_high; | |
fe7ed8cb DW |
122 | #define DEV_BOOTABLE __cpu_to_le32(0x01) |
123 | #define DEV_BOOT_DEVICE __cpu_to_le32(0x02) | |
124 | #define DEV_READ_COALESCING __cpu_to_le32(0x04) | |
125 | #define DEV_WRITE_COALESCING __cpu_to_le32(0x08) | |
126 | #define DEV_LAST_SHUTDOWN_DIRTY __cpu_to_le32(0x10) | |
127 | #define DEV_HIDDEN_AT_BOOT __cpu_to_le32(0x20) | |
128 | #define DEV_CURRENTLY_HIDDEN __cpu_to_le32(0x40) | |
129 | #define DEV_VERIFY_AND_FIX __cpu_to_le32(0x80) | |
130 | #define DEV_MAP_STATE_UNINIT __cpu_to_le32(0x100) | |
131 | #define DEV_NO_AUTO_RECOVERY __cpu_to_le32(0x200) | |
132 | #define DEV_CLONE_N_GO __cpu_to_le32(0x400) | |
133 | #define DEV_CLONE_MAN_SYNC __cpu_to_le32(0x800) | |
134 | #define DEV_CNG_MASTER_DISK_NUM __cpu_to_le32(0x1000) | |
cdddbdbc DW |
135 | __u32 status; /* Persistent RaidDev status */ |
136 | __u32 reserved_blocks; /* Reserved blocks at beginning of volume */ | |
fe7ed8cb DW |
137 | __u8 migr_priority; |
138 | __u8 num_sub_vols; | |
139 | __u8 tid; | |
140 | __u8 cng_master_disk; | |
141 | __u16 cache_policy; | |
142 | __u8 cng_state; | |
143 | __u8 cng_sub_state; | |
144 | #define IMSM_DEV_FILLERS 10 | |
cdddbdbc DW |
145 | __u32 filler[IMSM_DEV_FILLERS]; |
146 | struct imsm_vol vol; | |
147 | } __attribute__ ((packed)); | |
148 | ||
149 | struct imsm_super { | |
150 | __u8 sig[MAX_SIGNATURE_LENGTH]; /* 0x00 - 0x1F */ | |
151 | __u32 check_sum; /* 0x20 - 0x23 MPB Checksum */ | |
152 | __u32 mpb_size; /* 0x24 - 0x27 Size of MPB */ | |
153 | __u32 family_num; /* 0x28 - 0x2B Checksum from first time this config was written */ | |
154 | __u32 generation_num; /* 0x2C - 0x2F Incremented each time this array's MPB is written */ | |
604b746f JD |
155 | __u32 error_log_size; /* 0x30 - 0x33 in bytes */ |
156 | __u32 attributes; /* 0x34 - 0x37 */ | |
cdddbdbc DW |
157 | __u8 num_disks; /* 0x38 Number of configured disks */ |
158 | __u8 num_raid_devs; /* 0x39 Number of configured volumes */ | |
604b746f JD |
159 | __u8 error_log_pos; /* 0x3A */ |
160 | __u8 fill[1]; /* 0x3B */ | |
161 | __u32 cache_size; /* 0x3c - 0x40 in mb */ | |
162 | __u32 orig_family_num; /* 0x40 - 0x43 original family num */ | |
163 | __u32 pwr_cycle_count; /* 0x44 - 0x47 simulated power cycle count for array */ | |
164 | __u32 bbm_log_size; /* 0x48 - 0x4B - size of bad Block Mgmt Log in bytes */ | |
165 | #define IMSM_FILLERS 35 | |
166 | __u32 filler[IMSM_FILLERS]; /* 0x4C - 0xD7 RAID_MPB_FILLERS */ | |
cdddbdbc DW |
167 | struct imsm_disk disk[1]; /* 0xD8 diskTbl[numDisks] */ |
168 | /* here comes imsm_dev[num_raid_devs] */ | |
604b746f | 169 | /* here comes BBM logs */ |
cdddbdbc DW |
170 | } __attribute__ ((packed)); |
171 | ||
604b746f JD |
172 | #define BBM_LOG_MAX_ENTRIES 254 |
173 | ||
174 | struct bbm_log_entry { | |
175 | __u64 defective_block_start; | |
176 | #define UNREADABLE 0xFFFFFFFF | |
177 | __u32 spare_block_offset; | |
178 | __u16 remapped_marked_count; | |
179 | __u16 disk_ordinal; | |
180 | } __attribute__ ((__packed__)); | |
181 | ||
182 | struct bbm_log { | |
183 | __u32 signature; /* 0xABADB10C */ | |
184 | __u32 entry_count; | |
185 | __u32 reserved_spare_block_count; /* 0 */ | |
186 | __u32 reserved; /* 0xFFFF */ | |
187 | __u64 first_spare_lba; | |
188 | struct bbm_log_entry mapped_block_entries[BBM_LOG_MAX_ENTRIES]; | |
189 | } __attribute__ ((__packed__)); | |
190 | ||
191 | ||
cdddbdbc DW |
192 | #ifndef MDASSEMBLE |
193 | static char *map_state_str[] = { "normal", "uninitialized", "degraded", "failed" }; | |
194 | #endif | |
195 | ||
87eb16df | 196 | static unsigned int sector_count(__u32 bytes) |
cdddbdbc | 197 | { |
87eb16df DW |
198 | return ((bytes + (512-1)) & (~(512-1))) / 512; |
199 | } | |
cdddbdbc | 200 | |
87eb16df DW |
201 | static unsigned int mpb_sectors(struct imsm_super *mpb) |
202 | { | |
203 | return sector_count(__le32_to_cpu(mpb->mpb_size)); | |
cdddbdbc DW |
204 | } |
205 | ||
ba2de7ba DW |
206 | struct intel_dev { |
207 | struct imsm_dev *dev; | |
208 | struct intel_dev *next; | |
209 | int index; | |
210 | }; | |
211 | ||
cdddbdbc DW |
212 | /* internal representation of IMSM metadata */ |
213 | struct intel_super { | |
214 | union { | |
949c47a0 DW |
215 | void *buf; /* O_DIRECT buffer for reading/writing metadata */ |
216 | struct imsm_super *anchor; /* immovable parameters */ | |
cdddbdbc | 217 | }; |
949c47a0 | 218 | size_t len; /* size of the 'buf' allocation */ |
4d7b1503 DW |
219 | void *next_buf; /* for realloc'ing buf from the manager */ |
220 | size_t next_len; | |
c2c087e6 DW |
221 | int updates_pending; /* count of pending updates for mdmon */ |
222 | int creating_imsm; /* flag to indicate container creation */ | |
bf5a934a | 223 | int current_vol; /* index of raid device undergoing creation */ |
0dcecb2e | 224 | __u32 create_offset; /* common start for 'current_vol' */ |
ba2de7ba | 225 | struct intel_dev *devlist; |
cdddbdbc DW |
226 | struct dl { |
227 | struct dl *next; | |
228 | int index; | |
229 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
230 | int major, minor; | |
231 | char *devname; | |
b9f594fe | 232 | struct imsm_disk disk; |
cdddbdbc | 233 | int fd; |
0dcecb2e DW |
234 | int extent_cnt; |
235 | struct extent *e; /* for determining freespace @ create */ | |
cdddbdbc | 236 | } *disks; |
43dad3d6 | 237 | struct dl *add; /* list of disks to add while mdmon active */ |
47ee5a45 | 238 | struct dl *missing; /* disks removed while we weren't looking */ |
43dad3d6 | 239 | struct bbm_log *bbm_log; |
88c32bb1 DW |
240 | const char *hba; /* device path of the raid controller for this metadata */ |
241 | const struct imsm_orom *orom; /* platform firmware support */ | |
cdddbdbc DW |
242 | }; |
243 | ||
c2c087e6 DW |
244 | struct extent { |
245 | unsigned long long start, size; | |
246 | }; | |
247 | ||
88758e9d DW |
248 | /* definition of messages passed to imsm_process_update */ |
249 | enum imsm_update_type { | |
250 | update_activate_spare, | |
8273f55e | 251 | update_create_array, |
43dad3d6 | 252 | update_add_disk, |
88758e9d DW |
253 | }; |
254 | ||
255 | struct imsm_update_activate_spare { | |
256 | enum imsm_update_type type; | |
d23fe947 | 257 | struct dl *dl; |
88758e9d DW |
258 | int slot; |
259 | int array; | |
260 | struct imsm_update_activate_spare *next; | |
261 | }; | |
262 | ||
54c2c1ea DW |
263 | struct disk_info { |
264 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
265 | }; | |
266 | ||
8273f55e DW |
267 | struct imsm_update_create_array { |
268 | enum imsm_update_type type; | |
8273f55e | 269 | int dev_idx; |
6a3e913e | 270 | struct imsm_dev dev; |
8273f55e DW |
271 | }; |
272 | ||
43dad3d6 DW |
273 | struct imsm_update_add_disk { |
274 | enum imsm_update_type type; | |
275 | }; | |
276 | ||
cdddbdbc DW |
277 | static struct supertype *match_metadata_desc_imsm(char *arg) |
278 | { | |
279 | struct supertype *st; | |
280 | ||
281 | if (strcmp(arg, "imsm") != 0 && | |
282 | strcmp(arg, "default") != 0 | |
283 | ) | |
284 | return NULL; | |
285 | ||
286 | st = malloc(sizeof(*st)); | |
ef609477 | 287 | memset(st, 0, sizeof(*st)); |
cdddbdbc DW |
288 | st->ss = &super_imsm; |
289 | st->max_devs = IMSM_MAX_DEVICES; | |
290 | st->minor_version = 0; | |
291 | st->sb = NULL; | |
292 | return st; | |
293 | } | |
294 | ||
0e600426 | 295 | #ifndef MDASSEMBLE |
cdddbdbc DW |
296 | static __u8 *get_imsm_version(struct imsm_super *mpb) |
297 | { | |
298 | return &mpb->sig[MPB_SIG_LEN]; | |
299 | } | |
0e600426 | 300 | #endif |
cdddbdbc | 301 | |
949c47a0 DW |
302 | /* retrieve a disk directly from the anchor when the anchor is known to be |
303 | * up-to-date, currently only at load time | |
304 | */ | |
305 | static struct imsm_disk *__get_imsm_disk(struct imsm_super *mpb, __u8 index) | |
cdddbdbc | 306 | { |
949c47a0 | 307 | if (index >= mpb->num_disks) |
cdddbdbc DW |
308 | return NULL; |
309 | return &mpb->disk[index]; | |
310 | } | |
311 | ||
0e600426 | 312 | #ifndef MDASSEMBLE |
b9f594fe | 313 | /* retrieve a disk from the parsed metadata */ |
949c47a0 DW |
314 | static struct imsm_disk *get_imsm_disk(struct intel_super *super, __u8 index) |
315 | { | |
b9f594fe DW |
316 | struct dl *d; |
317 | ||
318 | for (d = super->disks; d; d = d->next) | |
319 | if (d->index == index) | |
320 | return &d->disk; | |
321 | ||
322 | return NULL; | |
949c47a0 | 323 | } |
0e600426 | 324 | #endif |
949c47a0 DW |
325 | |
326 | /* generate a checksum directly from the anchor when the anchor is known to be | |
327 | * up-to-date, currently only at load or write_super after coalescing | |
328 | */ | |
329 | static __u32 __gen_imsm_checksum(struct imsm_super *mpb) | |
cdddbdbc DW |
330 | { |
331 | __u32 end = mpb->mpb_size / sizeof(end); | |
332 | __u32 *p = (__u32 *) mpb; | |
333 | __u32 sum = 0; | |
334 | ||
97f734fd N |
335 | while (end--) { |
336 | sum += __le32_to_cpu(*p); | |
337 | p++; | |
338 | } | |
cdddbdbc DW |
339 | |
340 | return sum - __le32_to_cpu(mpb->check_sum); | |
341 | } | |
342 | ||
a965f303 DW |
343 | static size_t sizeof_imsm_map(struct imsm_map *map) |
344 | { | |
345 | return sizeof(struct imsm_map) + sizeof(__u32) * (map->num_members - 1); | |
346 | } | |
347 | ||
348 | struct imsm_map *get_imsm_map(struct imsm_dev *dev, int second_map) | |
cdddbdbc | 349 | { |
a965f303 DW |
350 | struct imsm_map *map = &dev->vol.map[0]; |
351 | ||
352 | if (second_map && !dev->vol.migr_state) | |
353 | return NULL; | |
354 | else if (second_map) { | |
355 | void *ptr = map; | |
356 | ||
357 | return ptr + sizeof_imsm_map(map); | |
358 | } else | |
359 | return map; | |
360 | ||
361 | } | |
cdddbdbc | 362 | |
3393c6af DW |
363 | /* return the size of the device. |
364 | * migr_state increases the returned size if map[0] were to be duplicated | |
365 | */ | |
366 | static size_t sizeof_imsm_dev(struct imsm_dev *dev, int migr_state) | |
a965f303 DW |
367 | { |
368 | size_t size = sizeof(*dev) - sizeof(struct imsm_map) + | |
369 | sizeof_imsm_map(get_imsm_map(dev, 0)); | |
cdddbdbc DW |
370 | |
371 | /* migrating means an additional map */ | |
a965f303 DW |
372 | if (dev->vol.migr_state) |
373 | size += sizeof_imsm_map(get_imsm_map(dev, 1)); | |
3393c6af DW |
374 | else if (migr_state) |
375 | size += sizeof_imsm_map(get_imsm_map(dev, 0)); | |
cdddbdbc DW |
376 | |
377 | return size; | |
378 | } | |
379 | ||
54c2c1ea DW |
380 | #ifndef MDASSEMBLE |
381 | /* retrieve disk serial number list from a metadata update */ | |
382 | static struct disk_info *get_disk_info(struct imsm_update_create_array *update) | |
383 | { | |
384 | void *u = update; | |
385 | struct disk_info *inf; | |
386 | ||
387 | inf = u + sizeof(*update) - sizeof(struct imsm_dev) + | |
388 | sizeof_imsm_dev(&update->dev, 0); | |
389 | ||
390 | return inf; | |
391 | } | |
392 | #endif | |
393 | ||
949c47a0 | 394 | static struct imsm_dev *__get_imsm_dev(struct imsm_super *mpb, __u8 index) |
cdddbdbc DW |
395 | { |
396 | int offset; | |
397 | int i; | |
398 | void *_mpb = mpb; | |
399 | ||
949c47a0 | 400 | if (index >= mpb->num_raid_devs) |
cdddbdbc DW |
401 | return NULL; |
402 | ||
403 | /* devices start after all disks */ | |
404 | offset = ((void *) &mpb->disk[mpb->num_disks]) - _mpb; | |
405 | ||
406 | for (i = 0; i <= index; i++) | |
407 | if (i == index) | |
408 | return _mpb + offset; | |
409 | else | |
3393c6af | 410 | offset += sizeof_imsm_dev(_mpb + offset, 0); |
cdddbdbc DW |
411 | |
412 | return NULL; | |
413 | } | |
414 | ||
949c47a0 DW |
415 | static struct imsm_dev *get_imsm_dev(struct intel_super *super, __u8 index) |
416 | { | |
ba2de7ba DW |
417 | struct intel_dev *dv; |
418 | ||
949c47a0 DW |
419 | if (index >= super->anchor->num_raid_devs) |
420 | return NULL; | |
ba2de7ba DW |
421 | for (dv = super->devlist; dv; dv = dv->next) |
422 | if (dv->index == index) | |
423 | return dv->dev; | |
424 | return NULL; | |
949c47a0 DW |
425 | } |
426 | ||
7eef0453 DW |
427 | static __u32 get_imsm_ord_tbl_ent(struct imsm_dev *dev, int slot) |
428 | { | |
429 | struct imsm_map *map; | |
430 | ||
431 | if (dev->vol.migr_state) | |
7eef0453 | 432 | map = get_imsm_map(dev, 1); |
fb9bf0d3 DW |
433 | else |
434 | map = get_imsm_map(dev, 0); | |
7eef0453 | 435 | |
ff077194 DW |
436 | /* top byte identifies disk under rebuild */ |
437 | return __le32_to_cpu(map->disk_ord_tbl[slot]); | |
438 | } | |
439 | ||
440 | #define ord_to_idx(ord) (((ord) << 8) >> 8) | |
441 | static __u32 get_imsm_disk_idx(struct imsm_dev *dev, int slot) | |
442 | { | |
443 | __u32 ord = get_imsm_ord_tbl_ent(dev, slot); | |
444 | ||
445 | return ord_to_idx(ord); | |
7eef0453 DW |
446 | } |
447 | ||
be73972f DW |
448 | static void set_imsm_ord_tbl_ent(struct imsm_map *map, int slot, __u32 ord) |
449 | { | |
450 | map->disk_ord_tbl[slot] = __cpu_to_le32(ord); | |
451 | } | |
452 | ||
cdddbdbc DW |
453 | static int get_imsm_raid_level(struct imsm_map *map) |
454 | { | |
455 | if (map->raid_level == 1) { | |
456 | if (map->num_members == 2) | |
457 | return 1; | |
458 | else | |
459 | return 10; | |
460 | } | |
461 | ||
462 | return map->raid_level; | |
463 | } | |
464 | ||
c2c087e6 DW |
465 | static int cmp_extent(const void *av, const void *bv) |
466 | { | |
467 | const struct extent *a = av; | |
468 | const struct extent *b = bv; | |
469 | if (a->start < b->start) | |
470 | return -1; | |
471 | if (a->start > b->start) | |
472 | return 1; | |
473 | return 0; | |
474 | } | |
475 | ||
0dcecb2e | 476 | static int count_memberships(struct dl *dl, struct intel_super *super) |
c2c087e6 | 477 | { |
c2c087e6 | 478 | int memberships = 0; |
0dcecb2e | 479 | int i, j; |
c2c087e6 | 480 | |
949c47a0 DW |
481 | for (i = 0; i < super->anchor->num_raid_devs; i++) { |
482 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
a965f303 | 483 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2c087e6 DW |
484 | |
485 | for (j = 0; j < map->num_members; j++) { | |
ff077194 | 486 | __u32 index = get_imsm_disk_idx(dev, j); |
c2c087e6 DW |
487 | |
488 | if (index == dl->index) | |
489 | memberships++; | |
490 | } | |
491 | } | |
0dcecb2e DW |
492 | |
493 | return memberships; | |
494 | } | |
495 | ||
496 | static struct extent *get_extents(struct intel_super *super, struct dl *dl) | |
497 | { | |
498 | /* find a list of used extents on the given physical device */ | |
499 | struct extent *rv, *e; | |
500 | int i, j; | |
501 | int memberships = count_memberships(dl, super); | |
502 | __u32 reservation = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
503 | ||
c2c087e6 DW |
504 | rv = malloc(sizeof(struct extent) * (memberships + 1)); |
505 | if (!rv) | |
506 | return NULL; | |
507 | e = rv; | |
508 | ||
949c47a0 DW |
509 | for (i = 0; i < super->anchor->num_raid_devs; i++) { |
510 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
a965f303 | 511 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2c087e6 DW |
512 | |
513 | for (j = 0; j < map->num_members; j++) { | |
ff077194 | 514 | __u32 index = get_imsm_disk_idx(dev, j); |
c2c087e6 DW |
515 | |
516 | if (index == dl->index) { | |
517 | e->start = __le32_to_cpu(map->pba_of_lba0); | |
518 | e->size = __le32_to_cpu(map->blocks_per_member); | |
519 | e++; | |
520 | } | |
521 | } | |
522 | } | |
523 | qsort(rv, memberships, sizeof(*rv), cmp_extent); | |
524 | ||
14e8215b DW |
525 | /* determine the start of the metadata |
526 | * when no raid devices are defined use the default | |
527 | * ...otherwise allow the metadata to truncate the value | |
528 | * as is the case with older versions of imsm | |
529 | */ | |
530 | if (memberships) { | |
531 | struct extent *last = &rv[memberships - 1]; | |
532 | __u32 remainder; | |
533 | ||
534 | remainder = __le32_to_cpu(dl->disk.total_blocks) - | |
535 | (last->start + last->size); | |
dda5855f DW |
536 | /* round down to 1k block to satisfy precision of the kernel |
537 | * 'size' interface | |
538 | */ | |
539 | remainder &= ~1UL; | |
540 | /* make sure remainder is still sane */ | |
541 | if (remainder < ROUND_UP(super->len, 512) >> 9) | |
542 | remainder = ROUND_UP(super->len, 512) >> 9; | |
14e8215b DW |
543 | if (reservation > remainder) |
544 | reservation = remainder; | |
545 | } | |
546 | e->start = __le32_to_cpu(dl->disk.total_blocks) - reservation; | |
c2c087e6 DW |
547 | e->size = 0; |
548 | return rv; | |
549 | } | |
550 | ||
14e8215b DW |
551 | /* try to determine how much space is reserved for metadata from |
552 | * the last get_extents() entry, otherwise fallback to the | |
553 | * default | |
554 | */ | |
555 | static __u32 imsm_reserved_sectors(struct intel_super *super, struct dl *dl) | |
556 | { | |
557 | struct extent *e; | |
558 | int i; | |
559 | __u32 rv; | |
560 | ||
561 | /* for spares just return a minimal reservation which will grow | |
562 | * once the spare is picked up by an array | |
563 | */ | |
564 | if (dl->index == -1) | |
565 | return MPB_SECTOR_CNT; | |
566 | ||
567 | e = get_extents(super, dl); | |
568 | if (!e) | |
569 | return MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
570 | ||
571 | /* scroll to last entry */ | |
572 | for (i = 0; e[i].size; i++) | |
573 | continue; | |
574 | ||
575 | rv = __le32_to_cpu(dl->disk.total_blocks) - e[i].start; | |
576 | ||
577 | free(e); | |
578 | ||
579 | return rv; | |
580 | } | |
581 | ||
582 | #ifndef MDASSEMBLE | |
44470971 | 583 | static void print_imsm_dev(struct imsm_dev *dev, char *uuid, int disk_idx) |
cdddbdbc DW |
584 | { |
585 | __u64 sz; | |
586 | int slot; | |
a965f303 | 587 | struct imsm_map *map = get_imsm_map(dev, 0); |
b10b37b8 | 588 | __u32 ord; |
cdddbdbc DW |
589 | |
590 | printf("\n"); | |
1e7bc0ed | 591 | printf("[%.16s]:\n", dev->volume); |
44470971 | 592 | printf(" UUID : %s\n", uuid); |
cdddbdbc DW |
593 | printf(" RAID Level : %d\n", get_imsm_raid_level(map)); |
594 | printf(" Members : %d\n", map->num_members); | |
595 | for (slot = 0; slot < map->num_members; slot++) | |
44470971 | 596 | if (disk_idx== get_imsm_disk_idx(dev, slot)) |
cdddbdbc | 597 | break; |
b10b37b8 DW |
598 | if (slot < map->num_members) { |
599 | ord = get_imsm_ord_tbl_ent(dev, slot); | |
600 | printf(" This Slot : %d%s\n", slot, | |
601 | ord & IMSM_ORD_REBUILD ? " (out-of-sync)" : ""); | |
602 | } else | |
cdddbdbc DW |
603 | printf(" This Slot : ?\n"); |
604 | sz = __le32_to_cpu(dev->size_high); | |
605 | sz <<= 32; | |
606 | sz += __le32_to_cpu(dev->size_low); | |
607 | printf(" Array Size : %llu%s\n", (unsigned long long)sz, | |
608 | human_size(sz * 512)); | |
609 | sz = __le32_to_cpu(map->blocks_per_member); | |
610 | printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz, | |
611 | human_size(sz * 512)); | |
612 | printf(" Sector Offset : %u\n", | |
613 | __le32_to_cpu(map->pba_of_lba0)); | |
614 | printf(" Num Stripes : %u\n", | |
615 | __le32_to_cpu(map->num_data_stripes)); | |
616 | printf(" Chunk Size : %u KiB\n", | |
617 | __le16_to_cpu(map->blocks_per_strip) / 2); | |
618 | printf(" Reserved : %d\n", __le32_to_cpu(dev->reserved_blocks)); | |
3393c6af DW |
619 | printf(" Migrate State : %s", dev->vol.migr_state ? "migrating" : "idle"); |
620 | if (dev->vol.migr_state) | |
621 | printf(": %s", dev->vol.migr_type ? "rebuilding" : "initializing"); | |
622 | printf("\n"); | |
623 | printf(" Map State : %s", map_state_str[map->map_state]); | |
624 | if (dev->vol.migr_state) { | |
625 | struct imsm_map *map = get_imsm_map(dev, 1); | |
b10b37b8 | 626 | printf(" <-- %s", map_state_str[map->map_state]); |
3393c6af DW |
627 | } |
628 | printf("\n"); | |
cdddbdbc | 629 | printf(" Dirty State : %s\n", dev->vol.dirty ? "dirty" : "clean"); |
cdddbdbc DW |
630 | } |
631 | ||
14e8215b | 632 | static void print_imsm_disk(struct imsm_super *mpb, int index, __u32 reserved) |
cdddbdbc | 633 | { |
949c47a0 | 634 | struct imsm_disk *disk = __get_imsm_disk(mpb, index); |
1f24f035 | 635 | char str[MAX_RAID_SERIAL_LEN + 1]; |
cdddbdbc DW |
636 | __u32 s; |
637 | __u64 sz; | |
638 | ||
e9d82038 DW |
639 | if (index < 0) |
640 | return; | |
641 | ||
cdddbdbc | 642 | printf("\n"); |
1f24f035 | 643 | snprintf(str, MAX_RAID_SERIAL_LEN + 1, "%s", disk->serial); |
cdddbdbc | 644 | printf(" Disk%02d Serial : %s\n", index, str); |
f2f27e63 | 645 | s = disk->status; |
cdddbdbc DW |
646 | printf(" State :%s%s%s%s\n", s&SPARE_DISK ? " spare" : "", |
647 | s&CONFIGURED_DISK ? " active" : "", | |
648 | s&FAILED_DISK ? " failed" : "", | |
649 | s&USABLE_DISK ? " usable" : ""); | |
650 | printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id)); | |
14e8215b | 651 | sz = __le32_to_cpu(disk->total_blocks) - reserved; |
cdddbdbc DW |
652 | printf(" Usable Size : %llu%s\n", (unsigned long long)sz, |
653 | human_size(sz * 512)); | |
654 | } | |
655 | ||
44470971 DW |
656 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info); |
657 | ||
cdddbdbc DW |
658 | static void examine_super_imsm(struct supertype *st, char *homehost) |
659 | { | |
660 | struct intel_super *super = st->sb; | |
949c47a0 | 661 | struct imsm_super *mpb = super->anchor; |
cdddbdbc DW |
662 | char str[MAX_SIGNATURE_LENGTH]; |
663 | int i; | |
27fd6274 DW |
664 | struct mdinfo info; |
665 | char nbuf[64]; | |
cdddbdbc | 666 | __u32 sum; |
14e8215b | 667 | __u32 reserved = imsm_reserved_sectors(super, super->disks); |
cdddbdbc | 668 | |
27fd6274 | 669 | |
cdddbdbc DW |
670 | snprintf(str, MPB_SIG_LEN, "%s", mpb->sig); |
671 | printf(" Magic : %s\n", str); | |
672 | snprintf(str, strlen(MPB_VERSION_RAID0), "%s", get_imsm_version(mpb)); | |
673 | printf(" Version : %s\n", get_imsm_version(mpb)); | |
674 | printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num)); | |
675 | printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num)); | |
27fd6274 DW |
676 | getinfo_super_imsm(st, &info); |
677 | fname_from_uuid(st, &info, nbuf,'-'); | |
678 | printf(" UUID : %s\n", nbuf + 5); | |
cdddbdbc DW |
679 | sum = __le32_to_cpu(mpb->check_sum); |
680 | printf(" Checksum : %08x %s\n", sum, | |
949c47a0 | 681 | __gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect"); |
87eb16df | 682 | printf(" MPB Sectors : %d\n", mpb_sectors(mpb)); |
cdddbdbc DW |
683 | printf(" Disks : %d\n", mpb->num_disks); |
684 | printf(" RAID Devices : %d\n", mpb->num_raid_devs); | |
14e8215b | 685 | print_imsm_disk(mpb, super->disks->index, reserved); |
604b746f JD |
686 | if (super->bbm_log) { |
687 | struct bbm_log *log = super->bbm_log; | |
688 | ||
689 | printf("\n"); | |
690 | printf("Bad Block Management Log:\n"); | |
691 | printf(" Log Size : %d\n", __le32_to_cpu(mpb->bbm_log_size)); | |
692 | printf(" Signature : %x\n", __le32_to_cpu(log->signature)); | |
693 | printf(" Entry Count : %d\n", __le32_to_cpu(log->entry_count)); | |
694 | printf(" Spare Blocks : %d\n", __le32_to_cpu(log->reserved_spare_block_count)); | |
695 | printf(" First Spare : %llx\n", __le64_to_cpu(log->first_spare_lba)); | |
696 | } | |
44470971 DW |
697 | for (i = 0; i < mpb->num_raid_devs; i++) { |
698 | struct mdinfo info; | |
699 | struct imsm_dev *dev = __get_imsm_dev(mpb, i); | |
700 | ||
701 | super->current_vol = i; | |
702 | getinfo_super_imsm(st, &info); | |
703 | fname_from_uuid(st, &info, nbuf, '-'); | |
704 | print_imsm_dev(dev, nbuf + 5, super->disks->index); | |
705 | } | |
cdddbdbc DW |
706 | for (i = 0; i < mpb->num_disks; i++) { |
707 | if (i == super->disks->index) | |
708 | continue; | |
14e8215b | 709 | print_imsm_disk(mpb, i, reserved); |
cdddbdbc DW |
710 | } |
711 | } | |
712 | ||
713 | static void brief_examine_super_imsm(struct supertype *st) | |
714 | { | |
27fd6274 | 715 | /* We just write a generic IMSM ARRAY entry */ |
ff54de6e N |
716 | struct mdinfo info; |
717 | char nbuf[64]; | |
cf8de691 | 718 | char nbuf1[64]; |
1e7bc0ed DW |
719 | struct intel_super *super = st->sb; |
720 | int i; | |
721 | ||
722 | if (!super->anchor->num_raid_devs) | |
723 | return; | |
ff54de6e N |
724 | |
725 | getinfo_super_imsm(st, &info); | |
726 | fname_from_uuid(st, &info, nbuf,'-'); | |
cf8de691 | 727 | printf("ARRAY metadata=imsm auto=md UUID=%s\n", nbuf + 5); |
1e7bc0ed DW |
728 | for (i = 0; i < super->anchor->num_raid_devs; i++) { |
729 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
730 | ||
731 | super->current_vol = i; | |
732 | getinfo_super_imsm(st, &info); | |
cf8de691 | 733 | fname_from_uuid(st, &info, nbuf1,'-'); |
44470971 DW |
734 | printf("ARRAY /dev/md/%.16s container=%s\n" |
735 | " member=%d auto=mdp UUID=%s\n", | |
cf8de691 | 736 | dev->volume, nbuf + 5, i, nbuf1 + 5); |
1e7bc0ed | 737 | } |
cdddbdbc DW |
738 | } |
739 | ||
740 | static void detail_super_imsm(struct supertype *st, char *homehost) | |
741 | { | |
3ebe00a1 DW |
742 | struct mdinfo info; |
743 | char nbuf[64]; | |
744 | ||
745 | getinfo_super_imsm(st, &info); | |
746 | fname_from_uuid(st, &info, nbuf,'-'); | |
747 | printf("\n UUID : %s\n", nbuf + 5); | |
cdddbdbc DW |
748 | } |
749 | ||
750 | static void brief_detail_super_imsm(struct supertype *st) | |
751 | { | |
ff54de6e N |
752 | struct mdinfo info; |
753 | char nbuf[64]; | |
754 | getinfo_super_imsm(st, &info); | |
755 | fname_from_uuid(st, &info, nbuf,'-'); | |
756 | printf(" UUID=%s", nbuf + 5); | |
cdddbdbc | 757 | } |
d665cc31 DW |
758 | |
759 | static int imsm_read_serial(int fd, char *devname, __u8 *serial); | |
760 | static void fd2devname(int fd, char *name); | |
761 | ||
762 | static int imsm_enumerate_ports(const char *hba_path, int port_count, int host_base, int verbose) | |
763 | { | |
764 | /* dump an unsorted list of devices attached to ahci, as well as | |
765 | * non-connected ports | |
766 | */ | |
767 | int hba_len = strlen(hba_path) + 1; | |
768 | struct dirent *ent; | |
769 | DIR *dir; | |
770 | char *path = NULL; | |
771 | int err = 0; | |
772 | unsigned long port_mask = (1 << port_count) - 1; | |
773 | ||
774 | if (port_count > sizeof(port_mask) * 8) { | |
775 | if (verbose) | |
776 | fprintf(stderr, Name ": port_count %d out of range\n", port_count); | |
777 | return 2; | |
778 | } | |
779 | ||
780 | /* scroll through /sys/dev/block looking for devices attached to | |
781 | * this hba | |
782 | */ | |
783 | dir = opendir("/sys/dev/block"); | |
784 | for (ent = dir ? readdir(dir) : NULL; ent; ent = readdir(dir)) { | |
785 | int fd; | |
786 | char model[64]; | |
787 | char vendor[64]; | |
788 | char buf[1024]; | |
789 | int major, minor; | |
790 | char *device; | |
791 | char *c; | |
792 | int port; | |
793 | int type; | |
794 | ||
795 | if (sscanf(ent->d_name, "%d:%d", &major, &minor) != 2) | |
796 | continue; | |
797 | path = devt_to_devpath(makedev(major, minor)); | |
798 | if (!path) | |
799 | continue; | |
800 | if (!path_attached_to_hba(path, hba_path)) { | |
801 | free(path); | |
802 | path = NULL; | |
803 | continue; | |
804 | } | |
805 | ||
806 | /* retrieve the scsi device type */ | |
807 | if (asprintf(&device, "/sys/dev/block/%d:%d/device/xxxxxxx", major, minor) < 0) { | |
808 | if (verbose) | |
809 | fprintf(stderr, Name ": failed to allocate 'device'\n"); | |
810 | err = 2; | |
811 | break; | |
812 | } | |
813 | sprintf(device, "/sys/dev/block/%d:%d/device/type", major, minor); | |
814 | if (load_sys(device, buf) != 0) { | |
815 | if (verbose) | |
816 | fprintf(stderr, Name ": failed to read device type for %s\n", | |
817 | path); | |
818 | err = 2; | |
819 | free(device); | |
820 | break; | |
821 | } | |
822 | type = strtoul(buf, NULL, 10); | |
823 | ||
824 | /* if it's not a disk print the vendor and model */ | |
825 | if (!(type == 0 || type == 7 || type == 14)) { | |
826 | vendor[0] = '\0'; | |
827 | model[0] = '\0'; | |
828 | sprintf(device, "/sys/dev/block/%d:%d/device/vendor", major, minor); | |
829 | if (load_sys(device, buf) == 0) { | |
830 | strncpy(vendor, buf, sizeof(vendor)); | |
831 | vendor[sizeof(vendor) - 1] = '\0'; | |
832 | c = (char *) &vendor[sizeof(vendor) - 1]; | |
833 | while (isspace(*c) || *c == '\0') | |
834 | *c-- = '\0'; | |
835 | ||
836 | } | |
837 | sprintf(device, "/sys/dev/block/%d:%d/device/model", major, minor); | |
838 | if (load_sys(device, buf) == 0) { | |
839 | strncpy(model, buf, sizeof(model)); | |
840 | model[sizeof(model) - 1] = '\0'; | |
841 | c = (char *) &model[sizeof(model) - 1]; | |
842 | while (isspace(*c) || *c == '\0') | |
843 | *c-- = '\0'; | |
844 | } | |
845 | ||
846 | if (vendor[0] && model[0]) | |
847 | sprintf(buf, "%.64s %.64s", vendor, model); | |
848 | else | |
849 | switch (type) { /* numbers from hald/linux/device.c */ | |
850 | case 1: sprintf(buf, "tape"); break; | |
851 | case 2: sprintf(buf, "printer"); break; | |
852 | case 3: sprintf(buf, "processor"); break; | |
853 | case 4: | |
854 | case 5: sprintf(buf, "cdrom"); break; | |
855 | case 6: sprintf(buf, "scanner"); break; | |
856 | case 8: sprintf(buf, "media_changer"); break; | |
857 | case 9: sprintf(buf, "comm"); break; | |
858 | case 12: sprintf(buf, "raid"); break; | |
859 | default: sprintf(buf, "unknown"); | |
860 | } | |
861 | } else | |
862 | buf[0] = '\0'; | |
863 | free(device); | |
864 | ||
865 | /* chop device path to 'host%d' and calculate the port number */ | |
866 | c = strchr(&path[hba_len], '/'); | |
867 | *c = '\0'; | |
868 | if (sscanf(&path[hba_len], "host%d", &port) == 1) | |
869 | port -= host_base; | |
870 | else { | |
871 | if (verbose) { | |
872 | *c = '/'; /* repair the full string */ | |
873 | fprintf(stderr, Name ": failed to determine port number for %s\n", | |
874 | path); | |
875 | } | |
876 | err = 2; | |
877 | break; | |
878 | } | |
879 | ||
880 | /* mark this port as used */ | |
881 | port_mask &= ~(1 << port); | |
882 | ||
883 | /* print out the device information */ | |
884 | if (buf[0]) { | |
885 | printf(" Port%d : - non-disk device (%s) -\n", port, buf); | |
886 | continue; | |
887 | } | |
888 | ||
889 | fd = dev_open(ent->d_name, O_RDONLY); | |
890 | if (fd < 0) | |
891 | printf(" Port%d : - disk info unavailable -\n", port); | |
892 | else { | |
893 | fd2devname(fd, buf); | |
894 | printf(" Port%d : %s", port, buf); | |
895 | if (imsm_read_serial(fd, NULL, (__u8 *) buf) == 0) | |
896 | printf(" (%s)\n", buf); | |
897 | else | |
898 | printf("()\n"); | |
899 | } | |
900 | close(fd); | |
901 | free(path); | |
902 | path = NULL; | |
903 | } | |
904 | if (path) | |
905 | free(path); | |
906 | if (dir) | |
907 | closedir(dir); | |
908 | if (err == 0) { | |
909 | int i; | |
910 | ||
911 | for (i = 0; i < port_count; i++) | |
912 | if (port_mask & (1 << i)) | |
913 | printf(" Port%d : - no device attached -\n", i); | |
914 | } | |
915 | ||
916 | return err; | |
917 | } | |
918 | ||
5615172f | 919 | static int detail_platform_imsm(int verbose, int enumerate_only) |
d665cc31 DW |
920 | { |
921 | /* There are two components to imsm platform support, the ahci SATA | |
922 | * controller and the option-rom. To find the SATA controller we | |
923 | * simply look in /sys/bus/pci/drivers/ahci to see if an ahci | |
924 | * controller with the Intel vendor id is present. This approach | |
925 | * allows mdadm to leverage the kernel's ahci detection logic, with the | |
926 | * caveat that if ahci.ko is not loaded mdadm will not be able to | |
927 | * detect platform raid capabilities. The option-rom resides in a | |
928 | * platform "Adapter ROM". We scan for its signature to retrieve the | |
929 | * platform capabilities. If raid support is disabled in the BIOS the | |
930 | * option-rom capability structure will not be available. | |
931 | */ | |
932 | const struct imsm_orom *orom; | |
933 | struct sys_dev *list, *hba; | |
934 | DIR *dir; | |
935 | struct dirent *ent; | |
936 | const char *hba_path; | |
937 | int host_base = 0; | |
938 | int port_count = 0; | |
939 | ||
5615172f DW |
940 | if (enumerate_only) { |
941 | if (check_env("IMSM_NO_PLATFORM") || find_imsm_orom()) | |
942 | return 0; | |
943 | return 2; | |
944 | } | |
945 | ||
d665cc31 DW |
946 | list = find_driver_devices("pci", "ahci"); |
947 | for (hba = list; hba; hba = hba->next) | |
948 | if (devpath_to_vendor(hba->path) == 0x8086) | |
949 | break; | |
950 | ||
951 | if (!hba) { | |
952 | if (verbose) | |
953 | fprintf(stderr, Name ": unable to find active ahci controller\n"); | |
954 | free_sys_dev(&list); | |
955 | return 2; | |
956 | } else if (verbose) | |
957 | fprintf(stderr, Name ": found Intel SATA AHCI Controller\n"); | |
958 | hba_path = hba->path; | |
959 | hba->path = NULL; | |
960 | free_sys_dev(&list); | |
961 | ||
962 | orom = find_imsm_orom(); | |
963 | if (!orom) { | |
964 | if (verbose) | |
965 | fprintf(stderr, Name ": imsm option-rom not found\n"); | |
966 | return 2; | |
967 | } | |
968 | ||
969 | printf(" Platform : Intel(R) Matrix Storage Manager\n"); | |
970 | printf(" Version : %d.%d.%d.%d\n", orom->major_ver, orom->minor_ver, | |
971 | orom->hotfix_ver, orom->build); | |
972 | printf(" RAID Levels :%s%s%s%s%s\n", | |
973 | imsm_orom_has_raid0(orom) ? " raid0" : "", | |
974 | imsm_orom_has_raid1(orom) ? " raid1" : "", | |
975 | imsm_orom_has_raid1e(orom) ? " raid1e" : "", | |
976 | imsm_orom_has_raid10(orom) ? " raid10" : "", | |
977 | imsm_orom_has_raid5(orom) ? " raid5" : ""); | |
978 | printf(" Max Disks : %d\n", orom->tds); | |
979 | printf(" Max Volumes : %d\n", orom->vpa); | |
980 | printf(" I/O Controller : %s\n", hba_path); | |
981 | ||
982 | /* find the smallest scsi host number to determine a port number base */ | |
983 | dir = opendir(hba_path); | |
984 | for (ent = dir ? readdir(dir) : NULL; ent; ent = readdir(dir)) { | |
985 | int host; | |
986 | ||
987 | if (sscanf(ent->d_name, "host%d", &host) != 1) | |
988 | continue; | |
989 | if (port_count == 0) | |
990 | host_base = host; | |
991 | else if (host < host_base) | |
992 | host_base = host; | |
993 | ||
994 | if (host + 1 > port_count + host_base) | |
995 | port_count = host + 1 - host_base; | |
996 | ||
997 | } | |
998 | if (dir) | |
999 | closedir(dir); | |
1000 | ||
1001 | if (!port_count || imsm_enumerate_ports(hba_path, port_count, | |
1002 | host_base, verbose) != 0) { | |
1003 | if (verbose) | |
1004 | fprintf(stderr, Name ": failed to enumerate ports\n"); | |
1005 | return 2; | |
1006 | } | |
1007 | ||
1008 | return 0; | |
1009 | } | |
cdddbdbc DW |
1010 | #endif |
1011 | ||
1012 | static int match_home_imsm(struct supertype *st, char *homehost) | |
1013 | { | |
5115ca67 DW |
1014 | /* the imsm metadata format does not specify any host |
1015 | * identification information. We return -1 since we can never | |
1016 | * confirm nor deny whether a given array is "meant" for this | |
1017 | * host. We rely on compare_super and the 'family_num' field to | |
1018 | * exclude member disks that do not belong, and we rely on | |
1019 | * mdadm.conf to specify the arrays that should be assembled. | |
1020 | * Auto-assembly may still pick up "foreign" arrays. | |
1021 | */ | |
cdddbdbc | 1022 | |
9362c1c8 | 1023 | return -1; |
cdddbdbc DW |
1024 | } |
1025 | ||
1026 | static void uuid_from_super_imsm(struct supertype *st, int uuid[4]) | |
1027 | { | |
51006d85 N |
1028 | /* The uuid returned here is used for: |
1029 | * uuid to put into bitmap file (Create, Grow) | |
1030 | * uuid for backup header when saving critical section (Grow) | |
1031 | * comparing uuids when re-adding a device into an array | |
1032 | * In these cases the uuid required is that of the data-array, | |
1033 | * not the device-set. | |
1034 | * uuid to recognise same set when adding a missing device back | |
1035 | * to an array. This is a uuid for the device-set. | |
1036 | * | |
1037 | * For each of these we can make do with a truncated | |
1038 | * or hashed uuid rather than the original, as long as | |
1039 | * everyone agrees. | |
1040 | * In each case the uuid required is that of the data-array, | |
1041 | * not the device-set. | |
43dad3d6 | 1042 | */ |
51006d85 N |
1043 | /* imsm does not track uuid's so we synthesis one using sha1 on |
1044 | * - The signature (Which is constant for all imsm array, but no matter) | |
1045 | * - the family_num of the container | |
1046 | * - the index number of the volume | |
1047 | * - the 'serial' number of the volume. | |
1048 | * Hopefully these are all constant. | |
1049 | */ | |
1050 | struct intel_super *super = st->sb; | |
43dad3d6 | 1051 | |
51006d85 N |
1052 | char buf[20]; |
1053 | struct sha1_ctx ctx; | |
1054 | struct imsm_dev *dev = NULL; | |
1055 | ||
1056 | sha1_init_ctx(&ctx); | |
92bd8f8d | 1057 | sha1_process_bytes(super->anchor->sig, MPB_SIG_LEN, &ctx); |
51006d85 N |
1058 | sha1_process_bytes(&super->anchor->family_num, sizeof(__u32), &ctx); |
1059 | if (super->current_vol >= 0) | |
1060 | dev = get_imsm_dev(super, super->current_vol); | |
1061 | if (dev) { | |
1062 | __u32 vol = super->current_vol; | |
1063 | sha1_process_bytes(&vol, sizeof(vol), &ctx); | |
1064 | sha1_process_bytes(dev->volume, MAX_RAID_SERIAL_LEN, &ctx); | |
1065 | } | |
1066 | sha1_finish_ctx(&ctx, buf); | |
1067 | memcpy(uuid, buf, 4*4); | |
cdddbdbc DW |
1068 | } |
1069 | ||
0d481d37 | 1070 | #if 0 |
4f5bc454 DW |
1071 | static void |
1072 | get_imsm_numerical_version(struct imsm_super *mpb, int *m, int *p) | |
cdddbdbc | 1073 | { |
cdddbdbc DW |
1074 | __u8 *v = get_imsm_version(mpb); |
1075 | __u8 *end = mpb->sig + MAX_SIGNATURE_LENGTH; | |
1076 | char major[] = { 0, 0, 0 }; | |
1077 | char minor[] = { 0 ,0, 0 }; | |
1078 | char patch[] = { 0, 0, 0 }; | |
1079 | char *ver_parse[] = { major, minor, patch }; | |
1080 | int i, j; | |
1081 | ||
1082 | i = j = 0; | |
1083 | while (*v != '\0' && v < end) { | |
1084 | if (*v != '.' && j < 2) | |
1085 | ver_parse[i][j++] = *v; | |
1086 | else { | |
1087 | i++; | |
1088 | j = 0; | |
1089 | } | |
1090 | v++; | |
1091 | } | |
1092 | ||
4f5bc454 DW |
1093 | *m = strtol(minor, NULL, 0); |
1094 | *p = strtol(patch, NULL, 0); | |
1095 | } | |
0d481d37 | 1096 | #endif |
4f5bc454 | 1097 | |
c2c087e6 DW |
1098 | static int imsm_level_to_layout(int level) |
1099 | { | |
1100 | switch (level) { | |
1101 | case 0: | |
1102 | case 1: | |
1103 | return 0; | |
1104 | case 5: | |
1105 | case 6: | |
a380c027 | 1106 | return ALGORITHM_LEFT_ASYMMETRIC; |
c2c087e6 | 1107 | case 10: |
c92a2527 | 1108 | return 0x102; |
c2c087e6 | 1109 | } |
a18a888e | 1110 | return UnSet; |
c2c087e6 DW |
1111 | } |
1112 | ||
bf5a934a DW |
1113 | static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info) |
1114 | { | |
1115 | struct intel_super *super = st->sb; | |
949c47a0 | 1116 | struct imsm_dev *dev = get_imsm_dev(super, super->current_vol); |
a965f303 | 1117 | struct imsm_map *map = get_imsm_map(dev, 0); |
bf5a934a DW |
1118 | |
1119 | info->container_member = super->current_vol; | |
1120 | info->array.raid_disks = map->num_members; | |
1121 | info->array.level = get_imsm_raid_level(map); | |
1122 | info->array.layout = imsm_level_to_layout(info->array.level); | |
1123 | info->array.md_minor = -1; | |
1124 | info->array.ctime = 0; | |
1125 | info->array.utime = 0; | |
301406c9 DW |
1126 | info->array.chunk_size = __le16_to_cpu(map->blocks_per_strip) << 9; |
1127 | info->array.state = !dev->vol.dirty; | |
1128 | ||
1129 | info->disk.major = 0; | |
1130 | info->disk.minor = 0; | |
bf5a934a DW |
1131 | |
1132 | info->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
1133 | info->component_size = __le32_to_cpu(map->blocks_per_member); | |
301406c9 | 1134 | memset(info->uuid, 0, sizeof(info->uuid)); |
bf5a934a | 1135 | |
f8f603f1 | 1136 | if (map->map_state == IMSM_T_STATE_UNINITIALIZED || dev->vol.dirty) |
301406c9 | 1137 | info->resync_start = 0; |
f8f603f1 DW |
1138 | else if (dev->vol.migr_state) |
1139 | info->resync_start = __le32_to_cpu(dev->vol.curr_migr_unit); | |
301406c9 DW |
1140 | else |
1141 | info->resync_start = ~0ULL; | |
1142 | ||
1143 | strncpy(info->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN); | |
1144 | info->name[MAX_RAID_SERIAL_LEN] = 0; | |
bf5a934a | 1145 | |
f35f2525 N |
1146 | info->array.major_version = -1; |
1147 | info->array.minor_version = -2; | |
bf5a934a DW |
1148 | sprintf(info->text_version, "/%s/%d", |
1149 | devnum2devname(st->container_dev), | |
1150 | info->container_member); | |
a67dd8cc | 1151 | info->safe_mode_delay = 4000; /* 4 secs like the Matrix driver */ |
51006d85 | 1152 | uuid_from_super_imsm(st, info->uuid); |
bf5a934a DW |
1153 | } |
1154 | ||
1155 | ||
4f5bc454 DW |
1156 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info) |
1157 | { | |
1158 | struct intel_super *super = st->sb; | |
4f5bc454 DW |
1159 | struct imsm_disk *disk; |
1160 | __u32 s; | |
4f5bc454 | 1161 | |
bf5a934a DW |
1162 | if (super->current_vol >= 0) { |
1163 | getinfo_super_imsm_volume(st, info); | |
1164 | return; | |
1165 | } | |
d23fe947 DW |
1166 | |
1167 | /* Set raid_disks to zero so that Assemble will always pull in valid | |
1168 | * spares | |
1169 | */ | |
1170 | info->array.raid_disks = 0; | |
cdddbdbc DW |
1171 | info->array.level = LEVEL_CONTAINER; |
1172 | info->array.layout = 0; | |
1173 | info->array.md_minor = -1; | |
c2c087e6 | 1174 | info->array.ctime = 0; /* N/A for imsm */ |
cdddbdbc DW |
1175 | info->array.utime = 0; |
1176 | info->array.chunk_size = 0; | |
1177 | ||
1178 | info->disk.major = 0; | |
1179 | info->disk.minor = 0; | |
cdddbdbc | 1180 | info->disk.raid_disk = -1; |
c2c087e6 | 1181 | info->reshape_active = 0; |
f35f2525 N |
1182 | info->array.major_version = -1; |
1183 | info->array.minor_version = -2; | |
c2c087e6 | 1184 | strcpy(info->text_version, "imsm"); |
a67dd8cc | 1185 | info->safe_mode_delay = 0; |
c2c087e6 DW |
1186 | info->disk.number = -1; |
1187 | info->disk.state = 0; | |
c5afc314 | 1188 | info->name[0] = 0; |
c2c087e6 | 1189 | |
4a04ec6c | 1190 | if (super->disks) { |
14e8215b DW |
1191 | __u32 reserved = imsm_reserved_sectors(super, super->disks); |
1192 | ||
b9f594fe | 1193 | disk = &super->disks->disk; |
14e8215b DW |
1194 | info->data_offset = __le32_to_cpu(disk->total_blocks) - reserved; |
1195 | info->component_size = reserved; | |
f2f27e63 | 1196 | s = disk->status; |
4a04ec6c | 1197 | info->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0; |
032e9e29 | 1198 | info->disk.state |= s & SPARE_DISK ? 0 : (1 << MD_DISK_SYNC); |
caf8d231 DW |
1199 | if (s & FAILED_DISK || super->disks->index == -2) { |
1200 | info->disk.state |= 1 << MD_DISK_FAULTY; | |
1201 | info->disk.raid_disk = -2; | |
1202 | } | |
cdddbdbc | 1203 | } |
a575e2a7 DW |
1204 | |
1205 | /* only call uuid_from_super_imsm when this disk is part of a populated container, | |
1206 | * ->compare_super may have updated the 'num_raid_devs' field for spares | |
1207 | */ | |
1208 | if (info->disk.state & (1 << MD_DISK_SYNC) || super->anchor->num_raid_devs) | |
36ba7d48 | 1209 | uuid_from_super_imsm(st, info->uuid); |
032e9e29 DW |
1210 | else |
1211 | memcpy(info->uuid, uuid_match_any, sizeof(int[4])); | |
cdddbdbc DW |
1212 | } |
1213 | ||
cdddbdbc DW |
1214 | static int update_super_imsm(struct supertype *st, struct mdinfo *info, |
1215 | char *update, char *devname, int verbose, | |
1216 | int uuid_set, char *homehost) | |
1217 | { | |
f352c545 DW |
1218 | /* FIXME */ |
1219 | ||
1220 | /* For 'assemble' and 'force' we need to return non-zero if any | |
1221 | * change was made. For others, the return value is ignored. | |
1222 | * Update options are: | |
1223 | * force-one : This device looks a bit old but needs to be included, | |
1224 | * update age info appropriately. | |
1225 | * assemble: clear any 'faulty' flag to allow this device to | |
1226 | * be assembled. | |
1227 | * force-array: Array is degraded but being forced, mark it clean | |
1228 | * if that will be needed to assemble it. | |
1229 | * | |
1230 | * newdev: not used ???? | |
1231 | * grow: Array has gained a new device - this is currently for | |
1232 | * linear only | |
1233 | * resync: mark as dirty so a resync will happen. | |
1234 | * name: update the name - preserving the homehost | |
1235 | * | |
1236 | * Following are not relevant for this imsm: | |
1237 | * sparc2.2 : update from old dodgey metadata | |
1238 | * super-minor: change the preferred_minor number | |
1239 | * summaries: update redundant counters. | |
1240 | * uuid: Change the uuid of the array to match watch is given | |
1241 | * homehost: update the recorded homehost | |
1242 | * _reshape_progress: record new reshape_progress position. | |
1243 | */ | |
1244 | int rv = 0; | |
1245 | //struct intel_super *super = st->sb; | |
1246 | //struct imsm_super *mpb = super->mpb; | |
1247 | ||
1248 | if (strcmp(update, "grow") == 0) { | |
1249 | } | |
1250 | if (strcmp(update, "resync") == 0) { | |
1251 | /* dev->vol.dirty = 1; */ | |
1252 | } | |
1253 | ||
1254 | /* IMSM has no concept of UUID or homehost */ | |
1255 | ||
1256 | return rv; | |
cdddbdbc DW |
1257 | } |
1258 | ||
c2c087e6 | 1259 | static size_t disks_to_mpb_size(int disks) |
cdddbdbc | 1260 | { |
c2c087e6 | 1261 | size_t size; |
cdddbdbc | 1262 | |
c2c087e6 DW |
1263 | size = sizeof(struct imsm_super); |
1264 | size += (disks - 1) * sizeof(struct imsm_disk); | |
1265 | size += 2 * sizeof(struct imsm_dev); | |
1266 | /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */ | |
1267 | size += (4 - 2) * sizeof(struct imsm_map); | |
1268 | /* 4 possible disk_ord_tbl's */ | |
1269 | size += 4 * (disks - 1) * sizeof(__u32); | |
1270 | ||
1271 | return size; | |
1272 | } | |
1273 | ||
1274 | static __u64 avail_size_imsm(struct supertype *st, __u64 devsize) | |
1275 | { | |
1276 | if (devsize < (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS)) | |
1277 | return 0; | |
1278 | ||
1279 | return devsize - (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
cdddbdbc DW |
1280 | } |
1281 | ||
ba2de7ba DW |
1282 | static void free_devlist(struct intel_super *super) |
1283 | { | |
1284 | struct intel_dev *dv; | |
1285 | ||
1286 | while (super->devlist) { | |
1287 | dv = super->devlist->next; | |
1288 | free(super->devlist->dev); | |
1289 | free(super->devlist); | |
1290 | super->devlist = dv; | |
1291 | } | |
1292 | } | |
1293 | ||
1294 | static void imsm_copy_dev(struct imsm_dev *dest, struct imsm_dev *src) | |
1295 | { | |
1296 | memcpy(dest, src, sizeof_imsm_dev(src, 0)); | |
1297 | } | |
1298 | ||
cdddbdbc DW |
1299 | static int compare_super_imsm(struct supertype *st, struct supertype *tst) |
1300 | { | |
1301 | /* | |
1302 | * return: | |
1303 | * 0 same, or first was empty, and second was copied | |
1304 | * 1 second had wrong number | |
1305 | * 2 wrong uuid | |
1306 | * 3 wrong other info | |
1307 | */ | |
1308 | struct intel_super *first = st->sb; | |
1309 | struct intel_super *sec = tst->sb; | |
1310 | ||
1311 | if (!first) { | |
1312 | st->sb = tst->sb; | |
1313 | tst->sb = NULL; | |
1314 | return 0; | |
1315 | } | |
1316 | ||
949c47a0 | 1317 | if (memcmp(first->anchor->sig, sec->anchor->sig, MAX_SIGNATURE_LENGTH) != 0) |
cdddbdbc | 1318 | return 3; |
d23fe947 DW |
1319 | |
1320 | /* if an anchor does not have num_raid_devs set then it is a free | |
1321 | * floating spare | |
1322 | */ | |
1323 | if (first->anchor->num_raid_devs > 0 && | |
1324 | sec->anchor->num_raid_devs > 0) { | |
1325 | if (first->anchor->family_num != sec->anchor->family_num) | |
1326 | return 3; | |
d23fe947 | 1327 | } |
cdddbdbc | 1328 | |
3e372e5a DW |
1329 | /* if 'first' is a spare promote it to a populated mpb with sec's |
1330 | * family number | |
1331 | */ | |
1332 | if (first->anchor->num_raid_devs == 0 && | |
1333 | sec->anchor->num_raid_devs > 0) { | |
78d30f94 | 1334 | int i; |
ba2de7ba DW |
1335 | struct intel_dev *dv; |
1336 | struct imsm_dev *dev; | |
78d30f94 DW |
1337 | |
1338 | /* we need to copy raid device info from sec if an allocation | |
1339 | * fails here we don't associate the spare | |
1340 | */ | |
1341 | for (i = 0; i < sec->anchor->num_raid_devs; i++) { | |
ba2de7ba DW |
1342 | dv = malloc(sizeof(*dv)); |
1343 | if (!dv) | |
1344 | break; | |
1345 | dev = malloc(sizeof_imsm_dev(get_imsm_dev(sec, i), 1)); | |
1346 | if (!dev) { | |
1347 | free(dv); | |
1348 | break; | |
78d30f94 | 1349 | } |
ba2de7ba DW |
1350 | dv->dev = dev; |
1351 | dv->index = i; | |
1352 | dv->next = first->devlist; | |
1353 | first->devlist = dv; | |
78d30f94 | 1354 | } |
ba2de7ba DW |
1355 | if (i <= sec->anchor->num_raid_devs) { |
1356 | /* allocation failure */ | |
1357 | free_devlist(first); | |
1358 | fprintf(stderr, "imsm: failed to associate spare\n"); | |
1359 | return 3; | |
78d30f94 | 1360 | } |
ba2de7ba DW |
1361 | for (i = 0; i < sec->anchor->num_raid_devs; i++) |
1362 | imsm_copy_dev(get_imsm_dev(first, i), get_imsm_dev(sec, i)); | |
78d30f94 | 1363 | |
3e372e5a DW |
1364 | first->anchor->num_raid_devs = sec->anchor->num_raid_devs; |
1365 | first->anchor->family_num = sec->anchor->family_num; | |
1366 | } | |
1367 | ||
cdddbdbc DW |
1368 | return 0; |
1369 | } | |
1370 | ||
0030e8d6 DW |
1371 | static void fd2devname(int fd, char *name) |
1372 | { | |
1373 | struct stat st; | |
1374 | char path[256]; | |
1375 | char dname[100]; | |
1376 | char *nm; | |
1377 | int rv; | |
1378 | ||
1379 | name[0] = '\0'; | |
1380 | if (fstat(fd, &st) != 0) | |
1381 | return; | |
1382 | sprintf(path, "/sys/dev/block/%d:%d", | |
1383 | major(st.st_rdev), minor(st.st_rdev)); | |
1384 | ||
1385 | rv = readlink(path, dname, sizeof(dname)); | |
1386 | if (rv <= 0) | |
1387 | return; | |
1388 | ||
1389 | dname[rv] = '\0'; | |
1390 | nm = strrchr(dname, '/'); | |
1391 | nm++; | |
1392 | snprintf(name, MAX_RAID_SERIAL_LEN, "/dev/%s", nm); | |
1393 | } | |
1394 | ||
1395 | ||
cdddbdbc DW |
1396 | extern int scsi_get_serial(int fd, void *buf, size_t buf_len); |
1397 | ||
1398 | static int imsm_read_serial(int fd, char *devname, | |
1399 | __u8 serial[MAX_RAID_SERIAL_LEN]) | |
1400 | { | |
1401 | unsigned char scsi_serial[255]; | |
cdddbdbc DW |
1402 | int rv; |
1403 | int rsp_len; | |
1f24f035 DW |
1404 | int len; |
1405 | char *c, *rsp_buf; | |
cdddbdbc DW |
1406 | |
1407 | memset(scsi_serial, 0, sizeof(scsi_serial)); | |
cdddbdbc | 1408 | |
f9ba0ff1 DW |
1409 | rv = scsi_get_serial(fd, scsi_serial, sizeof(scsi_serial)); |
1410 | ||
40ebbb9c | 1411 | if (rv && check_env("IMSM_DEVNAME_AS_SERIAL")) { |
f9ba0ff1 DW |
1412 | memset(serial, 0, MAX_RAID_SERIAL_LEN); |
1413 | fd2devname(fd, (char *) serial); | |
0030e8d6 DW |
1414 | return 0; |
1415 | } | |
1416 | ||
cdddbdbc DW |
1417 | if (rv != 0) { |
1418 | if (devname) | |
1419 | fprintf(stderr, | |
1420 | Name ": Failed to retrieve serial for %s\n", | |
1421 | devname); | |
1422 | return rv; | |
1423 | } | |
1424 | ||
5c3db629 | 1425 | /* trim leading whitespace */ |
cdddbdbc | 1426 | rsp_len = scsi_serial[3]; |
03cd4cc8 DW |
1427 | if (!rsp_len) { |
1428 | if (devname) | |
1429 | fprintf(stderr, | |
1430 | Name ": Failed to retrieve serial for %s\n", | |
1431 | devname); | |
1432 | return 2; | |
1433 | } | |
1f24f035 DW |
1434 | rsp_buf = (char *) &scsi_serial[4]; |
1435 | c = rsp_buf; | |
1436 | while (isspace(*c)) | |
1437 | c++; | |
5c3db629 DW |
1438 | |
1439 | /* truncate len to the end of rsp_buf if necessary */ | |
1f24f035 DW |
1440 | if (c + MAX_RAID_SERIAL_LEN > rsp_buf + rsp_len) |
1441 | len = rsp_len - (c - rsp_buf); | |
1442 | else | |
1443 | len = MAX_RAID_SERIAL_LEN; | |
5c3db629 DW |
1444 | |
1445 | /* initialize the buffer and copy rsp_buf characters */ | |
1446 | memset(serial, 0, MAX_RAID_SERIAL_LEN); | |
1f24f035 | 1447 | memcpy(serial, c, len); |
5c3db629 DW |
1448 | |
1449 | /* trim trailing whitespace starting with the last character copied */ | |
1f24f035 DW |
1450 | c = (char *) &serial[len - 1]; |
1451 | while (isspace(*c) || *c == '\0') | |
1452 | *c-- = '\0'; | |
cdddbdbc DW |
1453 | |
1454 | return 0; | |
1455 | } | |
1456 | ||
1f24f035 DW |
1457 | static int serialcmp(__u8 *s1, __u8 *s2) |
1458 | { | |
1459 | return strncmp((char *) s1, (char *) s2, MAX_RAID_SERIAL_LEN); | |
1460 | } | |
1461 | ||
1462 | static void serialcpy(__u8 *dest, __u8 *src) | |
1463 | { | |
1464 | strncpy((char *) dest, (char *) src, MAX_RAID_SERIAL_LEN); | |
1465 | } | |
1466 | ||
54c2c1ea DW |
1467 | static struct dl *serial_to_dl(__u8 *serial, struct intel_super *super) |
1468 | { | |
1469 | struct dl *dl; | |
1470 | ||
1471 | for (dl = super->disks; dl; dl = dl->next) | |
1472 | if (serialcmp(dl->serial, serial) == 0) | |
1473 | break; | |
1474 | ||
1475 | return dl; | |
1476 | } | |
1477 | ||
cdddbdbc DW |
1478 | static int |
1479 | load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd) | |
1480 | { | |
cdddbdbc DW |
1481 | struct dl *dl; |
1482 | struct stat stb; | |
cdddbdbc DW |
1483 | int rv; |
1484 | int i; | |
d23fe947 DW |
1485 | int alloc = 1; |
1486 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
1487 | ||
1488 | rv = imsm_read_serial(fd, devname, serial); | |
1489 | ||
1490 | if (rv != 0) | |
1491 | return 2; | |
1492 | ||
1493 | /* check if this is a disk we have seen before. it may be a spare in | |
1494 | * super->disks while the current anchor believes it is a raid member, | |
1495 | * check if we need to update dl->index | |
1496 | */ | |
54c2c1ea | 1497 | dl = serial_to_dl(serial, super); |
d23fe947 DW |
1498 | if (!dl) |
1499 | dl = malloc(sizeof(*dl)); | |
1500 | else | |
1501 | alloc = 0; | |
cdddbdbc | 1502 | |
b9f594fe | 1503 | if (!dl) { |
cdddbdbc DW |
1504 | if (devname) |
1505 | fprintf(stderr, | |
1506 | Name ": failed to allocate disk buffer for %s\n", | |
1507 | devname); | |
1508 | return 2; | |
1509 | } | |
cdddbdbc | 1510 | |
d23fe947 DW |
1511 | if (alloc) { |
1512 | fstat(fd, &stb); | |
1513 | dl->major = major(stb.st_rdev); | |
1514 | dl->minor = minor(stb.st_rdev); | |
1515 | dl->next = super->disks; | |
1516 | dl->fd = keep_fd ? fd : -1; | |
1517 | dl->devname = devname ? strdup(devname) : NULL; | |
1f24f035 | 1518 | serialcpy(dl->serial, serial); |
8796fdc4 | 1519 | dl->index = -2; |
0dcecb2e | 1520 | dl->e = NULL; |
d23fe947 DW |
1521 | } else if (keep_fd) { |
1522 | close(dl->fd); | |
1523 | dl->fd = fd; | |
1524 | } | |
cdddbdbc | 1525 | |
d23fe947 | 1526 | /* look up this disk's index in the current anchor */ |
949c47a0 DW |
1527 | for (i = 0; i < super->anchor->num_disks; i++) { |
1528 | struct imsm_disk *disk_iter; | |
1529 | ||
1530 | disk_iter = __get_imsm_disk(super->anchor, i); | |
cdddbdbc | 1531 | |
1f24f035 | 1532 | if (serialcmp(disk_iter->serial, dl->serial) == 0) { |
b9f594fe | 1533 | dl->disk = *disk_iter; |
d23fe947 DW |
1534 | /* only set index on disks that are a member of a |
1535 | * populated contianer, i.e. one with raid_devs | |
1536 | */ | |
f2f27e63 | 1537 | if (dl->disk.status & FAILED_DISK) |
6c386dd3 | 1538 | dl->index = -2; |
f2f27e63 | 1539 | else if (dl->disk.status & SPARE_DISK) |
d23fe947 DW |
1540 | dl->index = -1; |
1541 | else | |
1542 | dl->index = i; | |
8796fdc4 | 1543 | |
cdddbdbc | 1544 | break; |
949c47a0 | 1545 | } |
cdddbdbc DW |
1546 | } |
1547 | ||
3f6efecc DW |
1548 | /* no match, maybe a stale failed drive */ |
1549 | if (i == super->anchor->num_disks && dl->index >= 0) { | |
1550 | dl->disk = *__get_imsm_disk(super->anchor, dl->index); | |
f2f27e63 | 1551 | if (dl->disk.status & FAILED_DISK) |
3f6efecc DW |
1552 | dl->index = -2; |
1553 | } | |
1554 | ||
d23fe947 DW |
1555 | if (alloc) |
1556 | super->disks = dl; | |
6c386dd3 | 1557 | |
949c47a0 DW |
1558 | return 0; |
1559 | } | |
1560 | ||
0e600426 | 1561 | #ifndef MDASSEMBLE |
0c046afd DW |
1562 | /* When migrating map0 contains the 'destination' state while map1 |
1563 | * contains the current state. When not migrating map0 contains the | |
1564 | * current state. This routine assumes that map[0].map_state is set to | |
1565 | * the current array state before being called. | |
1566 | * | |
1567 | * Migration is indicated by one of the following states | |
1568 | * 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed) | |
e3bba0e0 | 1569 | * 2/ Initialize (migr_state=1 migr_type=MIGR_INIT map0state=normal |
0c046afd | 1570 | * map1state=unitialized) |
e3bba0e0 | 1571 | * 3/ Verify (Resync) (migr_state=1 migr_type=MIGR_REBUILD map0state=normal |
0c046afd | 1572 | * map1state=normal) |
e3bba0e0 | 1573 | * 4/ Rebuild (migr_state=1 migr_type=MIGR_REBUILD map0state=normal |
0c046afd DW |
1574 | * map1state=degraded) |
1575 | */ | |
1576 | static void migrate(struct imsm_dev *dev, __u8 to_state, int rebuild_resync) | |
3393c6af | 1577 | { |
0c046afd | 1578 | struct imsm_map *dest; |
3393c6af DW |
1579 | struct imsm_map *src = get_imsm_map(dev, 0); |
1580 | ||
0c046afd DW |
1581 | dev->vol.migr_state = 1; |
1582 | dev->vol.migr_type = rebuild_resync; | |
f8f603f1 | 1583 | dev->vol.curr_migr_unit = 0; |
0c046afd DW |
1584 | dest = get_imsm_map(dev, 1); |
1585 | ||
3393c6af | 1586 | memcpy(dest, src, sizeof_imsm_map(src)); |
0c046afd | 1587 | src->map_state = to_state; |
949c47a0 | 1588 | } |
f8f603f1 DW |
1589 | |
1590 | static void end_migration(struct imsm_dev *dev, __u8 map_state) | |
1591 | { | |
1592 | struct imsm_map *map = get_imsm_map(dev, 0); | |
1593 | ||
1594 | dev->vol.migr_state = 0; | |
1595 | dev->vol.curr_migr_unit = 0; | |
1596 | map->map_state = map_state; | |
1597 | } | |
0e600426 | 1598 | #endif |
949c47a0 DW |
1599 | |
1600 | static int parse_raid_devices(struct intel_super *super) | |
1601 | { | |
1602 | int i; | |
1603 | struct imsm_dev *dev_new; | |
4d7b1503 DW |
1604 | size_t len, len_migr; |
1605 | size_t space_needed = 0; | |
1606 | struct imsm_super *mpb = super->anchor; | |
949c47a0 DW |
1607 | |
1608 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
1609 | struct imsm_dev *dev_iter = __get_imsm_dev(super->anchor, i); | |
ba2de7ba | 1610 | struct intel_dev *dv; |
949c47a0 | 1611 | |
4d7b1503 DW |
1612 | len = sizeof_imsm_dev(dev_iter, 0); |
1613 | len_migr = sizeof_imsm_dev(dev_iter, 1); | |
1614 | if (len_migr > len) | |
1615 | space_needed += len_migr - len; | |
1616 | ||
ba2de7ba DW |
1617 | dv = malloc(sizeof(*dv)); |
1618 | if (!dv) | |
1619 | return 1; | |
4d7b1503 | 1620 | dev_new = malloc(len_migr); |
ba2de7ba DW |
1621 | if (!dev_new) { |
1622 | free(dv); | |
949c47a0 | 1623 | return 1; |
ba2de7ba | 1624 | } |
949c47a0 | 1625 | imsm_copy_dev(dev_new, dev_iter); |
ba2de7ba DW |
1626 | dv->dev = dev_new; |
1627 | dv->index = i; | |
1628 | dv->next = super->devlist; | |
1629 | super->devlist = dv; | |
949c47a0 | 1630 | } |
cdddbdbc | 1631 | |
4d7b1503 DW |
1632 | /* ensure that super->buf is large enough when all raid devices |
1633 | * are migrating | |
1634 | */ | |
1635 | if (__le32_to_cpu(mpb->mpb_size) + space_needed > super->len) { | |
1636 | void *buf; | |
1637 | ||
1638 | len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + space_needed, 512); | |
1639 | if (posix_memalign(&buf, 512, len) != 0) | |
1640 | return 1; | |
1641 | ||
1642 | memcpy(buf, super->buf, len); | |
1643 | free(super->buf); | |
1644 | super->buf = buf; | |
1645 | super->len = len; | |
1646 | } | |
1647 | ||
cdddbdbc DW |
1648 | return 0; |
1649 | } | |
1650 | ||
604b746f JD |
1651 | /* retrieve a pointer to the bbm log which starts after all raid devices */ |
1652 | struct bbm_log *__get_imsm_bbm_log(struct imsm_super *mpb) | |
1653 | { | |
1654 | void *ptr = NULL; | |
1655 | ||
1656 | if (__le32_to_cpu(mpb->bbm_log_size)) { | |
1657 | ptr = mpb; | |
1658 | ptr += mpb->mpb_size - __le32_to_cpu(mpb->bbm_log_size); | |
1659 | } | |
1660 | ||
1661 | return ptr; | |
1662 | } | |
1663 | ||
d23fe947 | 1664 | static void __free_imsm(struct intel_super *super, int free_disks); |
9ca2c81c | 1665 | |
cdddbdbc DW |
1666 | /* load_imsm_mpb - read matrix metadata |
1667 | * allocates super->mpb to be freed by free_super | |
1668 | */ | |
1669 | static int load_imsm_mpb(int fd, struct intel_super *super, char *devname) | |
1670 | { | |
1671 | unsigned long long dsize; | |
cdddbdbc DW |
1672 | unsigned long long sectors; |
1673 | struct stat; | |
6416d527 | 1674 | struct imsm_super *anchor; |
cdddbdbc | 1675 | __u32 check_sum; |
949c47a0 | 1676 | int rc; |
cdddbdbc | 1677 | |
cdddbdbc DW |
1678 | get_dev_size(fd, NULL, &dsize); |
1679 | ||
1680 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) { | |
1681 | if (devname) | |
1682 | fprintf(stderr, | |
1683 | Name ": Cannot seek to anchor block on %s: %s\n", | |
1684 | devname, strerror(errno)); | |
1685 | return 1; | |
1686 | } | |
1687 | ||
949c47a0 | 1688 | if (posix_memalign((void**)&anchor, 512, 512) != 0) { |
ad97895e DW |
1689 | if (devname) |
1690 | fprintf(stderr, | |
1691 | Name ": Failed to allocate imsm anchor buffer" | |
1692 | " on %s\n", devname); | |
1693 | return 1; | |
1694 | } | |
949c47a0 | 1695 | if (read(fd, anchor, 512) != 512) { |
cdddbdbc DW |
1696 | if (devname) |
1697 | fprintf(stderr, | |
1698 | Name ": Cannot read anchor block on %s: %s\n", | |
1699 | devname, strerror(errno)); | |
6416d527 | 1700 | free(anchor); |
cdddbdbc DW |
1701 | return 1; |
1702 | } | |
1703 | ||
6416d527 | 1704 | if (strncmp((char *) anchor->sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) { |
cdddbdbc DW |
1705 | if (devname) |
1706 | fprintf(stderr, | |
1707 | Name ": no IMSM anchor on %s\n", devname); | |
6416d527 | 1708 | free(anchor); |
cdddbdbc DW |
1709 | return 2; |
1710 | } | |
1711 | ||
d23fe947 | 1712 | __free_imsm(super, 0); |
949c47a0 DW |
1713 | super->len = ROUND_UP(anchor->mpb_size, 512); |
1714 | if (posix_memalign(&super->buf, 512, super->len) != 0) { | |
cdddbdbc DW |
1715 | if (devname) |
1716 | fprintf(stderr, | |
1717 | Name ": unable to allocate %zu byte mpb buffer\n", | |
949c47a0 | 1718 | super->len); |
6416d527 | 1719 | free(anchor); |
cdddbdbc DW |
1720 | return 2; |
1721 | } | |
949c47a0 | 1722 | memcpy(super->buf, anchor, 512); |
cdddbdbc | 1723 | |
6416d527 NB |
1724 | sectors = mpb_sectors(anchor) - 1; |
1725 | free(anchor); | |
949c47a0 DW |
1726 | if (!sectors) { |
1727 | rc = load_imsm_disk(fd, super, devname, 0); | |
1728 | if (rc == 0) | |
1729 | rc = parse_raid_devices(super); | |
1730 | return rc; | |
1731 | } | |
cdddbdbc DW |
1732 | |
1733 | /* read the extended mpb */ | |
1734 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) { | |
1735 | if (devname) | |
1736 | fprintf(stderr, | |
1737 | Name ": Cannot seek to extended mpb on %s: %s\n", | |
1738 | devname, strerror(errno)); | |
1739 | return 1; | |
1740 | } | |
1741 | ||
949c47a0 | 1742 | if (read(fd, super->buf + 512, super->len - 512) != super->len - 512) { |
cdddbdbc DW |
1743 | if (devname) |
1744 | fprintf(stderr, | |
1745 | Name ": Cannot read extended mpb on %s: %s\n", | |
1746 | devname, strerror(errno)); | |
1747 | return 2; | |
1748 | } | |
1749 | ||
949c47a0 DW |
1750 | check_sum = __gen_imsm_checksum(super->anchor); |
1751 | if (check_sum != __le32_to_cpu(super->anchor->check_sum)) { | |
cdddbdbc DW |
1752 | if (devname) |
1753 | fprintf(stderr, | |
1754 | Name ": IMSM checksum %x != %x on %s\n", | |
949c47a0 | 1755 | check_sum, __le32_to_cpu(super->anchor->check_sum), |
cdddbdbc DW |
1756 | devname); |
1757 | return 2; | |
1758 | } | |
1759 | ||
604b746f JD |
1760 | /* FIXME the BBM log is disk specific so we cannot use this global |
1761 | * buffer for all disks. Ok for now since we only look at the global | |
1762 | * bbm_log_size parameter to gate assembly | |
1763 | */ | |
1764 | super->bbm_log = __get_imsm_bbm_log(super->anchor); | |
1765 | ||
949c47a0 DW |
1766 | rc = load_imsm_disk(fd, super, devname, 0); |
1767 | if (rc == 0) | |
1768 | rc = parse_raid_devices(super); | |
4d7b1503 | 1769 | |
949c47a0 | 1770 | return rc; |
cdddbdbc DW |
1771 | } |
1772 | ||
ae6aad82 DW |
1773 | static void __free_imsm_disk(struct dl *d) |
1774 | { | |
1775 | if (d->fd >= 0) | |
1776 | close(d->fd); | |
1777 | if (d->devname) | |
1778 | free(d->devname); | |
0dcecb2e DW |
1779 | if (d->e) |
1780 | free(d->e); | |
ae6aad82 DW |
1781 | free(d); |
1782 | ||
1783 | } | |
cdddbdbc DW |
1784 | static void free_imsm_disks(struct intel_super *super) |
1785 | { | |
47ee5a45 | 1786 | struct dl *d; |
cdddbdbc | 1787 | |
47ee5a45 DW |
1788 | while (super->disks) { |
1789 | d = super->disks; | |
cdddbdbc | 1790 | super->disks = d->next; |
ae6aad82 | 1791 | __free_imsm_disk(d); |
cdddbdbc | 1792 | } |
47ee5a45 DW |
1793 | while (super->missing) { |
1794 | d = super->missing; | |
1795 | super->missing = d->next; | |
1796 | __free_imsm_disk(d); | |
1797 | } | |
1798 | ||
cdddbdbc DW |
1799 | } |
1800 | ||
9ca2c81c | 1801 | /* free all the pieces hanging off of a super pointer */ |
d23fe947 | 1802 | static void __free_imsm(struct intel_super *super, int free_disks) |
cdddbdbc | 1803 | { |
9ca2c81c | 1804 | if (super->buf) { |
949c47a0 | 1805 | free(super->buf); |
9ca2c81c DW |
1806 | super->buf = NULL; |
1807 | } | |
d23fe947 DW |
1808 | if (free_disks) |
1809 | free_imsm_disks(super); | |
ba2de7ba | 1810 | free_devlist(super); |
88c32bb1 DW |
1811 | if (super->hba) { |
1812 | free((void *) super->hba); | |
1813 | super->hba = NULL; | |
1814 | } | |
cdddbdbc DW |
1815 | } |
1816 | ||
9ca2c81c DW |
1817 | static void free_imsm(struct intel_super *super) |
1818 | { | |
d23fe947 | 1819 | __free_imsm(super, 1); |
9ca2c81c DW |
1820 | free(super); |
1821 | } | |
cdddbdbc DW |
1822 | |
1823 | static void free_super_imsm(struct supertype *st) | |
1824 | { | |
1825 | struct intel_super *super = st->sb; | |
1826 | ||
1827 | if (!super) | |
1828 | return; | |
1829 | ||
1830 | free_imsm(super); | |
1831 | st->sb = NULL; | |
1832 | } | |
1833 | ||
c2c087e6 DW |
1834 | static struct intel_super *alloc_super(int creating_imsm) |
1835 | { | |
1836 | struct intel_super *super = malloc(sizeof(*super)); | |
1837 | ||
1838 | if (super) { | |
1839 | memset(super, 0, sizeof(*super)); | |
1840 | super->creating_imsm = creating_imsm; | |
bf5a934a | 1841 | super->current_vol = -1; |
0dcecb2e | 1842 | super->create_offset = ~((__u32 ) 0); |
88c32bb1 DW |
1843 | if (!check_env("IMSM_NO_PLATFORM")) |
1844 | super->orom = find_imsm_orom(); | |
1845 | if (super->orom) { | |
1846 | struct sys_dev *list, *ent; | |
1847 | ||
1848 | /* find the first intel ahci controller */ | |
1849 | list = find_driver_devices("pci", "ahci"); | |
1850 | for (ent = list; ent; ent = ent->next) | |
1851 | if (devpath_to_vendor(ent->path) == 0x8086) | |
1852 | break; | |
1853 | if (ent) { | |
1854 | super->hba = ent->path; | |
1855 | ent->path = NULL; | |
1856 | } | |
1857 | free_sys_dev(&list); | |
1858 | } | |
c2c087e6 DW |
1859 | } |
1860 | ||
1861 | return super; | |
1862 | } | |
1863 | ||
cdddbdbc | 1864 | #ifndef MDASSEMBLE |
47ee5a45 DW |
1865 | /* find_missing - helper routine for load_super_imsm_all that identifies |
1866 | * disks that have disappeared from the system. This routine relies on | |
1867 | * the mpb being uptodate, which it is at load time. | |
1868 | */ | |
1869 | static int find_missing(struct intel_super *super) | |
1870 | { | |
1871 | int i; | |
1872 | struct imsm_super *mpb = super->anchor; | |
1873 | struct dl *dl; | |
1874 | struct imsm_disk *disk; | |
47ee5a45 DW |
1875 | |
1876 | for (i = 0; i < mpb->num_disks; i++) { | |
1877 | disk = __get_imsm_disk(mpb, i); | |
54c2c1ea | 1878 | dl = serial_to_dl(disk->serial, super); |
47ee5a45 DW |
1879 | if (dl) |
1880 | continue; | |
1881 | /* ok we have a 'disk' without a live entry in | |
1882 | * super->disks | |
1883 | */ | |
f2f27e63 | 1884 | if (disk->status & FAILED_DISK || !(disk->status & USABLE_DISK)) |
47ee5a45 DW |
1885 | continue; /* never mind, already marked */ |
1886 | ||
1887 | dl = malloc(sizeof(*dl)); | |
1888 | if (!dl) | |
1889 | return 1; | |
1890 | dl->major = 0; | |
1891 | dl->minor = 0; | |
1892 | dl->fd = -1; | |
1893 | dl->devname = strdup("missing"); | |
1894 | dl->index = i; | |
1895 | serialcpy(dl->serial, disk->serial); | |
1896 | dl->disk = *disk; | |
1897 | dl->next = super->missing; | |
1898 | super->missing = dl; | |
1899 | } | |
1900 | ||
1901 | return 0; | |
1902 | } | |
1903 | ||
cdddbdbc DW |
1904 | static int load_super_imsm_all(struct supertype *st, int fd, void **sbp, |
1905 | char *devname, int keep_fd) | |
1906 | { | |
1907 | struct mdinfo *sra; | |
1908 | struct intel_super *super; | |
1909 | struct mdinfo *sd, *best = NULL; | |
1910 | __u32 bestgen = 0; | |
1911 | __u32 gen; | |
1912 | char nm[20]; | |
1913 | int dfd; | |
1914 | int rv; | |
1915 | ||
1916 | /* check if this disk is a member of an active array */ | |
1917 | sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE); | |
1918 | if (!sra) | |
1919 | return 1; | |
1920 | ||
1921 | if (sra->array.major_version != -1 || | |
1922 | sra->array.minor_version != -2 || | |
1923 | strcmp(sra->text_version, "imsm") != 0) | |
1924 | return 1; | |
1925 | ||
c2c087e6 | 1926 | super = alloc_super(0); |
cdddbdbc DW |
1927 | if (!super) |
1928 | return 1; | |
1929 | ||
d23fe947 | 1930 | /* find the most up to date disk in this array, skipping spares */ |
cdddbdbc DW |
1931 | for (sd = sra->devs; sd; sd = sd->next) { |
1932 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
1933 | dfd = dev_open(nm, keep_fd ? O_RDWR : O_RDONLY); | |
be2c0e38 | 1934 | if (dfd < 0) { |
cdddbdbc DW |
1935 | free_imsm(super); |
1936 | return 2; | |
1937 | } | |
1938 | rv = load_imsm_mpb(dfd, super, NULL); | |
1939 | if (!keep_fd) | |
1940 | close(dfd); | |
1941 | if (rv == 0) { | |
d23fe947 DW |
1942 | if (super->anchor->num_raid_devs == 0) |
1943 | gen = 0; | |
1944 | else | |
1945 | gen = __le32_to_cpu(super->anchor->generation_num); | |
cdddbdbc DW |
1946 | if (!best || gen > bestgen) { |
1947 | bestgen = gen; | |
1948 | best = sd; | |
1949 | } | |
1950 | } else { | |
1951 | free_imsm(super); | |
1952 | return 2; | |
1953 | } | |
1954 | } | |
1955 | ||
1956 | if (!best) { | |
1957 | free_imsm(super); | |
1958 | return 1; | |
1959 | } | |
1960 | ||
1961 | /* load the most up to date anchor */ | |
1962 | sprintf(nm, "%d:%d", best->disk.major, best->disk.minor); | |
1963 | dfd = dev_open(nm, O_RDONLY); | |
be2c0e38 | 1964 | if (dfd < 0) { |
cdddbdbc DW |
1965 | free_imsm(super); |
1966 | return 1; | |
1967 | } | |
1968 | rv = load_imsm_mpb(dfd, super, NULL); | |
1969 | close(dfd); | |
1970 | if (rv != 0) { | |
1971 | free_imsm(super); | |
1972 | return 2; | |
1973 | } | |
1974 | ||
d23fe947 | 1975 | /* re-parse the disk list with the current anchor */ |
cdddbdbc DW |
1976 | for (sd = sra->devs ; sd ; sd = sd->next) { |
1977 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
1978 | dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY); | |
be2c0e38 | 1979 | if (dfd < 0) { |
cdddbdbc DW |
1980 | free_imsm(super); |
1981 | return 2; | |
1982 | } | |
1983 | load_imsm_disk(dfd, super, NULL, keep_fd); | |
1984 | if (!keep_fd) | |
1985 | close(dfd); | |
1986 | } | |
1987 | ||
47ee5a45 DW |
1988 | |
1989 | if (find_missing(super) != 0) { | |
1990 | free_imsm(super); | |
1991 | return 2; | |
1992 | } | |
1993 | ||
f7e7067b | 1994 | if (st->subarray[0]) { |
949c47a0 | 1995 | if (atoi(st->subarray) <= super->anchor->num_raid_devs) |
bf5a934a DW |
1996 | super->current_vol = atoi(st->subarray); |
1997 | else | |
1998 | return 1; | |
f7e7067b NB |
1999 | } |
2000 | ||
cdddbdbc | 2001 | *sbp = super; |
43dad3d6 | 2002 | st->container_dev = fd2devnum(fd); |
cdddbdbc | 2003 | if (st->ss == NULL) { |
bf5a934a | 2004 | st->ss = &super_imsm; |
cdddbdbc DW |
2005 | st->minor_version = 0; |
2006 | st->max_devs = IMSM_MAX_DEVICES; | |
2007 | } | |
352452c3 | 2008 | st->loaded_container = 1; |
cdddbdbc DW |
2009 | |
2010 | return 0; | |
2011 | } | |
2012 | #endif | |
2013 | ||
2014 | static int load_super_imsm(struct supertype *st, int fd, char *devname) | |
2015 | { | |
2016 | struct intel_super *super; | |
2017 | int rv; | |
2018 | ||
2019 | #ifndef MDASSEMBLE | |
3dbccbcf | 2020 | if (load_super_imsm_all(st, fd, &st->sb, devname, 1) == 0) |
cdddbdbc DW |
2021 | return 0; |
2022 | #endif | |
f7e7067b NB |
2023 | if (st->subarray[0]) |
2024 | return 1; /* FIXME */ | |
cdddbdbc | 2025 | |
c2c087e6 | 2026 | super = alloc_super(0); |
cdddbdbc DW |
2027 | if (!super) { |
2028 | fprintf(stderr, | |
2029 | Name ": malloc of %zu failed.\n", | |
2030 | sizeof(*super)); | |
2031 | return 1; | |
2032 | } | |
2033 | ||
2034 | rv = load_imsm_mpb(fd, super, devname); | |
2035 | ||
2036 | if (rv) { | |
2037 | if (devname) | |
2038 | fprintf(stderr, | |
2039 | Name ": Failed to load all information " | |
2040 | "sections on %s\n", devname); | |
2041 | free_imsm(super); | |
2042 | return rv; | |
2043 | } | |
2044 | ||
2045 | st->sb = super; | |
2046 | if (st->ss == NULL) { | |
2047 | st->ss = &super_imsm; | |
2048 | st->minor_version = 0; | |
2049 | st->max_devs = IMSM_MAX_DEVICES; | |
2050 | } | |
352452c3 | 2051 | st->loaded_container = 0; |
cdddbdbc DW |
2052 | |
2053 | return 0; | |
2054 | } | |
2055 | ||
ef6ffade DW |
2056 | static __u16 info_to_blocks_per_strip(mdu_array_info_t *info) |
2057 | { | |
2058 | if (info->level == 1) | |
2059 | return 128; | |
2060 | return info->chunk_size >> 9; | |
2061 | } | |
2062 | ||
2063 | static __u32 info_to_num_data_stripes(mdu_array_info_t *info) | |
2064 | { | |
2065 | __u32 num_stripes; | |
2066 | ||
2067 | num_stripes = (info->size * 2) / info_to_blocks_per_strip(info); | |
2068 | if (info->level == 1) | |
2069 | num_stripes /= 2; | |
2070 | ||
2071 | return num_stripes; | |
2072 | } | |
2073 | ||
fcfd9599 DW |
2074 | static __u32 info_to_blocks_per_member(mdu_array_info_t *info) |
2075 | { | |
4025c288 DW |
2076 | if (info->level == 1) |
2077 | return info->size * 2; | |
2078 | else | |
2079 | return (info->size * 2) & ~(info_to_blocks_per_strip(info) - 1); | |
fcfd9599 DW |
2080 | } |
2081 | ||
4d1313e9 DW |
2082 | static void imsm_update_version_info(struct intel_super *super) |
2083 | { | |
2084 | /* update the version and attributes */ | |
2085 | struct imsm_super *mpb = super->anchor; | |
2086 | char *version; | |
2087 | struct imsm_dev *dev; | |
2088 | struct imsm_map *map; | |
2089 | int i; | |
2090 | ||
2091 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
2092 | dev = get_imsm_dev(super, i); | |
2093 | map = get_imsm_map(dev, 0); | |
2094 | if (__le32_to_cpu(dev->size_high) > 0) | |
2095 | mpb->attributes |= MPB_ATTRIB_2TB; | |
2096 | ||
2097 | /* FIXME detect when an array spans a port multiplier */ | |
2098 | #if 0 | |
2099 | mpb->attributes |= MPB_ATTRIB_PM; | |
2100 | #endif | |
2101 | ||
2102 | if (mpb->num_raid_devs > 1 || | |
2103 | mpb->attributes != MPB_ATTRIB_CHECKSUM_VERIFY) { | |
2104 | version = MPB_VERSION_ATTRIBS; | |
2105 | switch (get_imsm_raid_level(map)) { | |
2106 | case 0: mpb->attributes |= MPB_ATTRIB_RAID0; break; | |
2107 | case 1: mpb->attributes |= MPB_ATTRIB_RAID1; break; | |
2108 | case 10: mpb->attributes |= MPB_ATTRIB_RAID10; break; | |
2109 | case 5: mpb->attributes |= MPB_ATTRIB_RAID5; break; | |
2110 | } | |
2111 | } else { | |
2112 | if (map->num_members >= 5) | |
2113 | version = MPB_VERSION_5OR6_DISK_ARRAY; | |
2114 | else if (dev->status == DEV_CLONE_N_GO) | |
2115 | version = MPB_VERSION_CNG; | |
2116 | else if (get_imsm_raid_level(map) == 5) | |
2117 | version = MPB_VERSION_RAID5; | |
2118 | else if (map->num_members >= 3) | |
2119 | version = MPB_VERSION_3OR4_DISK_ARRAY; | |
2120 | else if (get_imsm_raid_level(map) == 1) | |
2121 | version = MPB_VERSION_RAID1; | |
2122 | else | |
2123 | version = MPB_VERSION_RAID0; | |
2124 | } | |
2125 | strcpy(((char *) mpb->sig) + strlen(MPB_SIGNATURE), version); | |
2126 | } | |
2127 | } | |
2128 | ||
8b353278 DW |
2129 | static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info, |
2130 | unsigned long long size, char *name, | |
2131 | char *homehost, int *uuid) | |
cdddbdbc | 2132 | { |
c2c087e6 DW |
2133 | /* We are creating a volume inside a pre-existing container. |
2134 | * so st->sb is already set. | |
2135 | */ | |
2136 | struct intel_super *super = st->sb; | |
949c47a0 | 2137 | struct imsm_super *mpb = super->anchor; |
ba2de7ba | 2138 | struct intel_dev *dv; |
c2c087e6 DW |
2139 | struct imsm_dev *dev; |
2140 | struct imsm_vol *vol; | |
2141 | struct imsm_map *map; | |
2142 | int idx = mpb->num_raid_devs; | |
2143 | int i; | |
2144 | unsigned long long array_blocks; | |
2c092cad | 2145 | size_t size_old, size_new; |
cdddbdbc | 2146 | |
88c32bb1 | 2147 | if (super->orom && mpb->num_raid_devs >= super->orom->vpa) { |
c2c087e6 | 2148 | fprintf(stderr, Name": This imsm-container already has the " |
88c32bb1 | 2149 | "maximum of %d volumes\n", super->orom->vpa); |
c2c087e6 DW |
2150 | return 0; |
2151 | } | |
2152 | ||
2c092cad DW |
2153 | /* ensure the mpb is large enough for the new data */ |
2154 | size_old = __le32_to_cpu(mpb->mpb_size); | |
2155 | size_new = disks_to_mpb_size(info->nr_disks); | |
2156 | if (size_new > size_old) { | |
2157 | void *mpb_new; | |
2158 | size_t size_round = ROUND_UP(size_new, 512); | |
2159 | ||
2160 | if (posix_memalign(&mpb_new, 512, size_round) != 0) { | |
2161 | fprintf(stderr, Name": could not allocate new mpb\n"); | |
2162 | return 0; | |
2163 | } | |
2164 | memcpy(mpb_new, mpb, size_old); | |
2165 | free(mpb); | |
2166 | mpb = mpb_new; | |
949c47a0 | 2167 | super->anchor = mpb_new; |
2c092cad DW |
2168 | mpb->mpb_size = __cpu_to_le32(size_new); |
2169 | memset(mpb_new + size_old, 0, size_round - size_old); | |
2170 | } | |
bf5a934a | 2171 | super->current_vol = idx; |
d23fe947 DW |
2172 | /* when creating the first raid device in this container set num_disks |
2173 | * to zero, i.e. delete this spare and add raid member devices in | |
2174 | * add_to_super_imsm_volume() | |
2175 | */ | |
2176 | if (super->current_vol == 0) | |
2177 | mpb->num_disks = 0; | |
bf5a934a | 2178 | sprintf(st->subarray, "%d", idx); |
ba2de7ba DW |
2179 | dv = malloc(sizeof(*dv)); |
2180 | if (!dv) { | |
2181 | fprintf(stderr, Name ": failed to allocate device list entry\n"); | |
2182 | return 0; | |
2183 | } | |
949c47a0 DW |
2184 | dev = malloc(sizeof(*dev) + sizeof(__u32) * (info->raid_disks - 1)); |
2185 | if (!dev) { | |
ba2de7ba | 2186 | free(dv); |
949c47a0 DW |
2187 | fprintf(stderr, Name": could not allocate raid device\n"); |
2188 | return 0; | |
2189 | } | |
c2c087e6 | 2190 | strncpy((char *) dev->volume, name, MAX_RAID_SERIAL_LEN); |
03bcbc65 DW |
2191 | if (info->level == 1) |
2192 | array_blocks = info_to_blocks_per_member(info); | |
2193 | else | |
2194 | array_blocks = calc_array_size(info->level, info->raid_disks, | |
2195 | info->layout, info->chunk_size, | |
2196 | info->size*2); | |
c2c087e6 DW |
2197 | dev->size_low = __cpu_to_le32((__u32) array_blocks); |
2198 | dev->size_high = __cpu_to_le32((__u32) (array_blocks >> 32)); | |
2199 | dev->status = __cpu_to_le32(0); | |
2200 | dev->reserved_blocks = __cpu_to_le32(0); | |
2201 | vol = &dev->vol; | |
2202 | vol->migr_state = 0; | |
e3bba0e0 | 2203 | vol->migr_type = MIGR_INIT; |
c2c087e6 | 2204 | vol->dirty = 0; |
f8f603f1 | 2205 | vol->curr_migr_unit = 0; |
a965f303 | 2206 | map = get_imsm_map(dev, 0); |
0dcecb2e | 2207 | map->pba_of_lba0 = __cpu_to_le32(super->create_offset); |
fcfd9599 | 2208 | map->blocks_per_member = __cpu_to_le32(info_to_blocks_per_member(info)); |
ef6ffade DW |
2209 | map->blocks_per_strip = __cpu_to_le16(info_to_blocks_per_strip(info)); |
2210 | map->num_data_stripes = __cpu_to_le32(info_to_num_data_stripes(info)); | |
c2c087e6 DW |
2211 | map->map_state = info->level ? IMSM_T_STATE_UNINITIALIZED : |
2212 | IMSM_T_STATE_NORMAL; | |
ef6ffade DW |
2213 | |
2214 | if (info->level == 1 && info->raid_disks > 2) { | |
2215 | fprintf(stderr, Name": imsm does not support more than 2 disks" | |
2216 | "in a raid1 volume\n"); | |
2217 | return 0; | |
2218 | } | |
4d1313e9 | 2219 | if (info->level == 10) { |
c2c087e6 | 2220 | map->raid_level = 1; |
4d1313e9 DW |
2221 | map->num_domains = info->raid_disks / 2; |
2222 | } else { | |
c2c087e6 | 2223 | map->raid_level = info->level; |
4d1313e9 DW |
2224 | map->num_domains = !!map->raid_level; |
2225 | } | |
ef6ffade | 2226 | |
c2c087e6 DW |
2227 | map->num_members = info->raid_disks; |
2228 | for (i = 0; i < map->num_members; i++) { | |
2229 | /* initialized in add_to_super */ | |
be73972f | 2230 | set_imsm_ord_tbl_ent(map, i, 0); |
c2c087e6 | 2231 | } |
949c47a0 | 2232 | mpb->num_raid_devs++; |
ba2de7ba DW |
2233 | |
2234 | dv->dev = dev; | |
2235 | dv->index = super->current_vol; | |
2236 | dv->next = super->devlist; | |
2237 | super->devlist = dv; | |
c2c087e6 | 2238 | |
4d1313e9 DW |
2239 | imsm_update_version_info(super); |
2240 | ||
c2c087e6 | 2241 | return 1; |
cdddbdbc DW |
2242 | } |
2243 | ||
bf5a934a DW |
2244 | static int init_super_imsm(struct supertype *st, mdu_array_info_t *info, |
2245 | unsigned long long size, char *name, | |
2246 | char *homehost, int *uuid) | |
2247 | { | |
2248 | /* This is primarily called by Create when creating a new array. | |
2249 | * We will then get add_to_super called for each component, and then | |
2250 | * write_init_super called to write it out to each device. | |
2251 | * For IMSM, Create can create on fresh devices or on a pre-existing | |
2252 | * array. | |
2253 | * To create on a pre-existing array a different method will be called. | |
2254 | * This one is just for fresh drives. | |
2255 | */ | |
2256 | struct intel_super *super; | |
2257 | struct imsm_super *mpb; | |
2258 | size_t mpb_size; | |
4d1313e9 | 2259 | char *version; |
bf5a934a DW |
2260 | |
2261 | if (!info) { | |
2262 | st->sb = NULL; | |
2263 | return 0; | |
2264 | } | |
2265 | if (st->sb) | |
2266 | return init_super_imsm_volume(st, info, size, name, homehost, | |
2267 | uuid); | |
2268 | ||
2269 | super = alloc_super(1); | |
2270 | if (!super) | |
2271 | return 0; | |
2272 | mpb_size = disks_to_mpb_size(info->nr_disks); | |
ef649044 | 2273 | if (posix_memalign(&super->buf, 512, mpb_size) != 0) { |
bf5a934a DW |
2274 | free(super); |
2275 | return 0; | |
2276 | } | |
ef649044 | 2277 | mpb = super->buf; |
bf5a934a DW |
2278 | memset(mpb, 0, mpb_size); |
2279 | ||
4d1313e9 DW |
2280 | mpb->attributes = MPB_ATTRIB_CHECKSUM_VERIFY; |
2281 | ||
2282 | version = (char *) mpb->sig; | |
2283 | strcpy(version, MPB_SIGNATURE); | |
2284 | version += strlen(MPB_SIGNATURE); | |
2285 | strcpy(version, MPB_VERSION_RAID0); | |
bf5a934a DW |
2286 | mpb->mpb_size = mpb_size; |
2287 | ||
bf5a934a DW |
2288 | st->sb = super; |
2289 | return 1; | |
2290 | } | |
2291 | ||
0e600426 | 2292 | #ifndef MDASSEMBLE |
f20c3968 | 2293 | static int add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk, |
bf5a934a DW |
2294 | int fd, char *devname) |
2295 | { | |
2296 | struct intel_super *super = st->sb; | |
d23fe947 | 2297 | struct imsm_super *mpb = super->anchor; |
bf5a934a DW |
2298 | struct dl *dl; |
2299 | struct imsm_dev *dev; | |
2300 | struct imsm_map *map; | |
bf5a934a | 2301 | |
949c47a0 | 2302 | dev = get_imsm_dev(super, super->current_vol); |
a965f303 | 2303 | map = get_imsm_map(dev, 0); |
bf5a934a | 2304 | |
208933a7 N |
2305 | if (! (dk->state & (1<<MD_DISK_SYNC))) { |
2306 | fprintf(stderr, Name ": %s: Cannot add spare devices to IMSM volume\n", | |
2307 | devname); | |
2308 | return 1; | |
2309 | } | |
2310 | ||
bf5a934a DW |
2311 | for (dl = super->disks; dl ; dl = dl->next) |
2312 | if (dl->major == dk->major && | |
2313 | dl->minor == dk->minor) | |
2314 | break; | |
d23fe947 | 2315 | |
208933a7 N |
2316 | if (!dl) { |
2317 | fprintf(stderr, Name ": %s is not a member of the same container\n", devname); | |
f20c3968 | 2318 | return 1; |
208933a7 | 2319 | } |
bf5a934a | 2320 | |
d23fe947 DW |
2321 | /* add a pristine spare to the metadata */ |
2322 | if (dl->index < 0) { | |
2323 | dl->index = super->anchor->num_disks; | |
2324 | super->anchor->num_disks++; | |
2325 | } | |
be73972f | 2326 | set_imsm_ord_tbl_ent(map, dk->number, dl->index); |
f2f27e63 | 2327 | dl->disk.status = CONFIGURED_DISK | USABLE_DISK; |
d23fe947 DW |
2328 | |
2329 | /* if we are creating the first raid device update the family number */ | |
2330 | if (super->current_vol == 0) { | |
2331 | __u32 sum; | |
2332 | struct imsm_dev *_dev = __get_imsm_dev(mpb, 0); | |
2333 | struct imsm_disk *_disk = __get_imsm_disk(mpb, dl->index); | |
2334 | ||
2335 | *_dev = *dev; | |
2336 | *_disk = dl->disk; | |
2337 | sum = __gen_imsm_checksum(mpb); | |
2338 | mpb->family_num = __cpu_to_le32(sum); | |
2339 | } | |
f20c3968 DW |
2340 | |
2341 | return 0; | |
bf5a934a DW |
2342 | } |
2343 | ||
f20c3968 | 2344 | static int add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk, |
cdddbdbc DW |
2345 | int fd, char *devname) |
2346 | { | |
c2c087e6 | 2347 | struct intel_super *super = st->sb; |
c2c087e6 DW |
2348 | struct dl *dd; |
2349 | unsigned long long size; | |
f2f27e63 | 2350 | __u32 id; |
c2c087e6 DW |
2351 | int rv; |
2352 | struct stat stb; | |
2353 | ||
88c32bb1 DW |
2354 | /* if we are on an RAID enabled platform check that the disk is |
2355 | * attached to the raid controller | |
2356 | */ | |
2357 | if (super->hba && !disk_attached_to_hba(fd, super->hba)) { | |
2358 | fprintf(stderr, | |
2359 | Name ": %s is not attached to the raid controller: %s\n", | |
2360 | devname ? : "disk", super->hba); | |
2361 | return 1; | |
2362 | } | |
2363 | ||
f20c3968 DW |
2364 | if (super->current_vol >= 0) |
2365 | return add_to_super_imsm_volume(st, dk, fd, devname); | |
bf5a934a | 2366 | |
c2c087e6 DW |
2367 | fstat(fd, &stb); |
2368 | dd = malloc(sizeof(*dd)); | |
b9f594fe | 2369 | if (!dd) { |
c2c087e6 DW |
2370 | fprintf(stderr, |
2371 | Name ": malloc failed %s:%d.\n", __func__, __LINE__); | |
f20c3968 | 2372 | return 1; |
c2c087e6 DW |
2373 | } |
2374 | memset(dd, 0, sizeof(*dd)); | |
2375 | dd->major = major(stb.st_rdev); | |
2376 | dd->minor = minor(stb.st_rdev); | |
b9f594fe | 2377 | dd->index = -1; |
c2c087e6 | 2378 | dd->devname = devname ? strdup(devname) : NULL; |
c2c087e6 DW |
2379 | dd->fd = fd; |
2380 | rv = imsm_read_serial(fd, devname, dd->serial); | |
2381 | if (rv) { | |
2382 | fprintf(stderr, | |
0030e8d6 | 2383 | Name ": failed to retrieve scsi serial, aborting\n"); |
949c47a0 | 2384 | free(dd); |
0030e8d6 | 2385 | abort(); |
c2c087e6 DW |
2386 | } |
2387 | ||
c2c087e6 DW |
2388 | get_dev_size(fd, NULL, &size); |
2389 | size /= 512; | |
1f24f035 | 2390 | serialcpy(dd->disk.serial, dd->serial); |
b9f594fe | 2391 | dd->disk.total_blocks = __cpu_to_le32(size); |
f2f27e63 | 2392 | dd->disk.status = USABLE_DISK | SPARE_DISK; |
c2c087e6 | 2393 | if (sysfs_disk_to_scsi_id(fd, &id) == 0) |
b9f594fe | 2394 | dd->disk.scsi_id = __cpu_to_le32(id); |
c2c087e6 | 2395 | else |
b9f594fe | 2396 | dd->disk.scsi_id = __cpu_to_le32(0); |
43dad3d6 DW |
2397 | |
2398 | if (st->update_tail) { | |
2399 | dd->next = super->add; | |
2400 | super->add = dd; | |
2401 | } else { | |
2402 | dd->next = super->disks; | |
2403 | super->disks = dd; | |
2404 | } | |
f20c3968 DW |
2405 | |
2406 | return 0; | |
cdddbdbc DW |
2407 | } |
2408 | ||
c2c087e6 DW |
2409 | static int store_imsm_mpb(int fd, struct intel_super *super); |
2410 | ||
d23fe947 DW |
2411 | /* spare records have their own family number and do not have any defined raid |
2412 | * devices | |
2413 | */ | |
2414 | static int write_super_imsm_spares(struct intel_super *super, int doclose) | |
2415 | { | |
2416 | struct imsm_super mpb_save; | |
2417 | struct imsm_super *mpb = super->anchor; | |
2418 | __u32 sum; | |
2419 | struct dl *d; | |
2420 | ||
2421 | mpb_save = *mpb; | |
2422 | mpb->num_raid_devs = 0; | |
2423 | mpb->num_disks = 1; | |
2424 | mpb->mpb_size = sizeof(struct imsm_super); | |
2425 | mpb->generation_num = __cpu_to_le32(1UL); | |
2426 | ||
2427 | for (d = super->disks; d; d = d->next) { | |
8796fdc4 | 2428 | if (d->index != -1) |
d23fe947 DW |
2429 | continue; |
2430 | ||
2431 | mpb->disk[0] = d->disk; | |
2432 | sum = __gen_imsm_checksum(mpb); | |
2433 | mpb->family_num = __cpu_to_le32(sum); | |
2434 | sum = __gen_imsm_checksum(mpb); | |
2435 | mpb->check_sum = __cpu_to_le32(sum); | |
2436 | ||
2437 | if (store_imsm_mpb(d->fd, super)) { | |
2438 | fprintf(stderr, "%s: failed for device %d:%d %s\n", | |
2439 | __func__, d->major, d->minor, strerror(errno)); | |
2440 | *mpb = mpb_save; | |
e74255d9 | 2441 | return 1; |
d23fe947 DW |
2442 | } |
2443 | if (doclose) { | |
2444 | close(d->fd); | |
2445 | d->fd = -1; | |
2446 | } | |
2447 | } | |
2448 | ||
2449 | *mpb = mpb_save; | |
e74255d9 | 2450 | return 0; |
d23fe947 DW |
2451 | } |
2452 | ||
c2c087e6 | 2453 | static int write_super_imsm(struct intel_super *super, int doclose) |
cdddbdbc | 2454 | { |
949c47a0 | 2455 | struct imsm_super *mpb = super->anchor; |
c2c087e6 DW |
2456 | struct dl *d; |
2457 | __u32 generation; | |
2458 | __u32 sum; | |
d23fe947 | 2459 | int spares = 0; |
949c47a0 | 2460 | int i; |
a48ac0a8 | 2461 | __u32 mpb_size = sizeof(struct imsm_super) - sizeof(struct imsm_disk); |
cdddbdbc | 2462 | |
c2c087e6 DW |
2463 | /* 'generation' is incremented everytime the metadata is written */ |
2464 | generation = __le32_to_cpu(mpb->generation_num); | |
2465 | generation++; | |
2466 | mpb->generation_num = __cpu_to_le32(generation); | |
2467 | ||
1ee1e9fc | 2468 | mpb_size += sizeof(struct imsm_disk) * mpb->num_disks; |
d23fe947 | 2469 | for (d = super->disks; d; d = d->next) { |
8796fdc4 | 2470 | if (d->index == -1) |
d23fe947 | 2471 | spares++; |
1ee1e9fc | 2472 | else |
d23fe947 | 2473 | mpb->disk[d->index] = d->disk; |
d23fe947 | 2474 | } |
47ee5a45 DW |
2475 | for (d = super->missing; d; d = d->next) |
2476 | mpb->disk[d->index] = d->disk; | |
b9f594fe | 2477 | |
949c47a0 DW |
2478 | for (i = 0; i < mpb->num_raid_devs; i++) { |
2479 | struct imsm_dev *dev = __get_imsm_dev(mpb, i); | |
2480 | ||
ba2de7ba | 2481 | imsm_copy_dev(dev, get_imsm_dev(super, i)); |
a48ac0a8 | 2482 | mpb_size += sizeof_imsm_dev(dev, 0); |
949c47a0 | 2483 | } |
a48ac0a8 DW |
2484 | mpb_size += __le32_to_cpu(mpb->bbm_log_size); |
2485 | mpb->mpb_size = __cpu_to_le32(mpb_size); | |
949c47a0 | 2486 | |
c2c087e6 | 2487 | /* recalculate checksum */ |
949c47a0 | 2488 | sum = __gen_imsm_checksum(mpb); |
c2c087e6 DW |
2489 | mpb->check_sum = __cpu_to_le32(sum); |
2490 | ||
d23fe947 | 2491 | /* write the mpb for disks that compose raid devices */ |
c2c087e6 | 2492 | for (d = super->disks; d ; d = d->next) { |
d23fe947 DW |
2493 | if (d->index < 0) |
2494 | continue; | |
8796fdc4 | 2495 | if (store_imsm_mpb(d->fd, super)) |
c2c087e6 DW |
2496 | fprintf(stderr, "%s: failed for device %d:%d %s\n", |
2497 | __func__, d->major, d->minor, strerror(errno)); | |
c2c087e6 DW |
2498 | if (doclose) { |
2499 | close(d->fd); | |
2500 | d->fd = -1; | |
2501 | } | |
2502 | } | |
2503 | ||
d23fe947 DW |
2504 | if (spares) |
2505 | return write_super_imsm_spares(super, doclose); | |
2506 | ||
e74255d9 | 2507 | return 0; |
c2c087e6 DW |
2508 | } |
2509 | ||
0e600426 | 2510 | |
43dad3d6 DW |
2511 | static int create_array(struct supertype *st) |
2512 | { | |
2513 | size_t len; | |
2514 | struct imsm_update_create_array *u; | |
2515 | struct intel_super *super = st->sb; | |
2516 | struct imsm_dev *dev = get_imsm_dev(super, super->current_vol); | |
54c2c1ea DW |
2517 | struct imsm_map *map = get_imsm_map(dev, 0); |
2518 | struct disk_info *inf; | |
2519 | struct imsm_disk *disk; | |
2520 | int i; | |
2521 | int idx; | |
43dad3d6 | 2522 | |
54c2c1ea DW |
2523 | len = sizeof(*u) - sizeof(*dev) + sizeof_imsm_dev(dev, 0) + |
2524 | sizeof(*inf) * map->num_members; | |
43dad3d6 DW |
2525 | u = malloc(len); |
2526 | if (!u) { | |
2527 | fprintf(stderr, "%s: failed to allocate update buffer\n", | |
2528 | __func__); | |
2529 | return 1; | |
2530 | } | |
2531 | ||
2532 | u->type = update_create_array; | |
2533 | u->dev_idx = super->current_vol; | |
2534 | imsm_copy_dev(&u->dev, dev); | |
54c2c1ea DW |
2535 | inf = get_disk_info(u); |
2536 | for (i = 0; i < map->num_members; i++) { | |
2537 | idx = get_imsm_disk_idx(dev, i); | |
2538 | disk = get_imsm_disk(super, idx); | |
2539 | serialcpy(inf[i].serial, disk->serial); | |
2540 | } | |
43dad3d6 DW |
2541 | append_metadata_update(st, u, len); |
2542 | ||
2543 | return 0; | |
2544 | } | |
2545 | ||
7801ac20 | 2546 | static int _add_disk(struct supertype *st) |
43dad3d6 DW |
2547 | { |
2548 | struct intel_super *super = st->sb; | |
2549 | size_t len; | |
2550 | struct imsm_update_add_disk *u; | |
2551 | ||
2552 | if (!super->add) | |
2553 | return 0; | |
2554 | ||
2555 | len = sizeof(*u); | |
2556 | u = malloc(len); | |
2557 | if (!u) { | |
2558 | fprintf(stderr, "%s: failed to allocate update buffer\n", | |
2559 | __func__); | |
2560 | return 1; | |
2561 | } | |
2562 | ||
2563 | u->type = update_add_disk; | |
2564 | append_metadata_update(st, u, len); | |
2565 | ||
2566 | return 0; | |
2567 | } | |
2568 | ||
c2c087e6 DW |
2569 | static int write_init_super_imsm(struct supertype *st) |
2570 | { | |
8273f55e | 2571 | if (st->update_tail) { |
43dad3d6 DW |
2572 | /* queue the recently created array / added disk |
2573 | * as a metadata update */ | |
8273f55e | 2574 | struct intel_super *super = st->sb; |
8273f55e | 2575 | struct dl *d; |
43dad3d6 | 2576 | int rv; |
8273f55e | 2577 | |
43dad3d6 DW |
2578 | /* determine if we are creating a volume or adding a disk */ |
2579 | if (super->current_vol < 0) { | |
2580 | /* in the add disk case we are running in mdmon | |
2581 | * context, so don't close fd's | |
2582 | */ | |
7801ac20 | 2583 | return _add_disk(st); |
43dad3d6 DW |
2584 | } else |
2585 | rv = create_array(st); | |
8273f55e DW |
2586 | |
2587 | for (d = super->disks; d ; d = d->next) { | |
2588 | close(d->fd); | |
2589 | d->fd = -1; | |
2590 | } | |
2591 | ||
43dad3d6 | 2592 | return rv; |
8273f55e DW |
2593 | } else |
2594 | return write_super_imsm(st->sb, 1); | |
cdddbdbc | 2595 | } |
0e600426 | 2596 | #endif |
cdddbdbc DW |
2597 | |
2598 | static int store_zero_imsm(struct supertype *st, int fd) | |
2599 | { | |
551c80c1 | 2600 | unsigned long long dsize; |
6416d527 | 2601 | void *buf; |
551c80c1 DW |
2602 | |
2603 | get_dev_size(fd, NULL, &dsize); | |
2604 | ||
2605 | /* first block is stored on second to last sector of the disk */ | |
2606 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
2607 | return 1; | |
2608 | ||
ad97895e DW |
2609 | if (posix_memalign(&buf, 512, 512) != 0) |
2610 | return 1; | |
2611 | ||
eb7ea463 DW |
2612 | memset(buf, 0, 512); |
2613 | if (write(fd, buf, 512) != 512) | |
551c80c1 | 2614 | return 1; |
cdddbdbc DW |
2615 | return 0; |
2616 | } | |
2617 | ||
0e600426 N |
2618 | static int imsm_bbm_log_size(struct imsm_super *mpb) |
2619 | { | |
2620 | return __le32_to_cpu(mpb->bbm_log_size); | |
2621 | } | |
2622 | ||
2623 | #ifndef MDASSEMBLE | |
cdddbdbc DW |
2624 | static int validate_geometry_imsm_container(struct supertype *st, int level, |
2625 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 2626 | unsigned long long size, char *dev, |
2c514b71 NB |
2627 | unsigned long long *freesize, |
2628 | int verbose) | |
cdddbdbc | 2629 | { |
c2c087e6 DW |
2630 | int fd; |
2631 | unsigned long long ldsize; | |
88c32bb1 | 2632 | const struct imsm_orom *orom; |
cdddbdbc | 2633 | |
c2c087e6 DW |
2634 | if (level != LEVEL_CONTAINER) |
2635 | return 0; | |
2636 | if (!dev) | |
2637 | return 1; | |
2638 | ||
88c32bb1 DW |
2639 | if (check_env("IMSM_NO_PLATFORM")) |
2640 | orom = NULL; | |
2641 | else | |
2642 | orom = find_imsm_orom(); | |
2643 | if (orom && raiddisks > orom->tds) { | |
2644 | if (verbose) | |
2645 | fprintf(stderr, Name ": %d exceeds maximum number of" | |
2646 | " platform supported disks: %d\n", | |
2647 | raiddisks, orom->tds); | |
2648 | return 0; | |
2649 | } | |
2650 | ||
c2c087e6 DW |
2651 | fd = open(dev, O_RDONLY|O_EXCL, 0); |
2652 | if (fd < 0) { | |
2c514b71 NB |
2653 | if (verbose) |
2654 | fprintf(stderr, Name ": imsm: Cannot open %s: %s\n", | |
2655 | dev, strerror(errno)); | |
c2c087e6 DW |
2656 | return 0; |
2657 | } | |
2658 | if (!get_dev_size(fd, dev, &ldsize)) { | |
2659 | close(fd); | |
2660 | return 0; | |
2661 | } | |
2662 | close(fd); | |
2663 | ||
2664 | *freesize = avail_size_imsm(st, ldsize >> 9); | |
2665 | ||
2666 | return 1; | |
cdddbdbc DW |
2667 | } |
2668 | ||
0dcecb2e DW |
2669 | static unsigned long long find_size(struct extent *e, int *idx, int num_extents) |
2670 | { | |
2671 | const unsigned long long base_start = e[*idx].start; | |
2672 | unsigned long long end = base_start + e[*idx].size; | |
2673 | int i; | |
2674 | ||
2675 | if (base_start == end) | |
2676 | return 0; | |
2677 | ||
2678 | *idx = *idx + 1; | |
2679 | for (i = *idx; i < num_extents; i++) { | |
2680 | /* extend overlapping extents */ | |
2681 | if (e[i].start >= base_start && | |
2682 | e[i].start <= end) { | |
2683 | if (e[i].size == 0) | |
2684 | return 0; | |
2685 | if (e[i].start + e[i].size > end) | |
2686 | end = e[i].start + e[i].size; | |
2687 | } else if (e[i].start > end) { | |
2688 | *idx = i; | |
2689 | break; | |
2690 | } | |
2691 | } | |
2692 | ||
2693 | return end - base_start; | |
2694 | } | |
2695 | ||
2696 | static unsigned long long merge_extents(struct intel_super *super, int sum_extents) | |
2697 | { | |
2698 | /* build a composite disk with all known extents and generate a new | |
2699 | * 'maxsize' given the "all disks in an array must share a common start | |
2700 | * offset" constraint | |
2701 | */ | |
2702 | struct extent *e = calloc(sum_extents, sizeof(*e)); | |
2703 | struct dl *dl; | |
2704 | int i, j; | |
2705 | int start_extent; | |
2706 | unsigned long long pos; | |
2707 | unsigned long long start; | |
2708 | unsigned long long maxsize; | |
2709 | unsigned long reserve; | |
2710 | ||
2711 | if (!e) | |
2712 | return ~0ULL; /* error */ | |
2713 | ||
2714 | /* coalesce and sort all extents. also, check to see if we need to | |
2715 | * reserve space between member arrays | |
2716 | */ | |
2717 | j = 0; | |
2718 | for (dl = super->disks; dl; dl = dl->next) { | |
2719 | if (!dl->e) | |
2720 | continue; | |
2721 | for (i = 0; i < dl->extent_cnt; i++) | |
2722 | e[j++] = dl->e[i]; | |
2723 | } | |
2724 | qsort(e, sum_extents, sizeof(*e), cmp_extent); | |
2725 | ||
2726 | /* merge extents */ | |
2727 | i = 0; | |
2728 | j = 0; | |
2729 | while (i < sum_extents) { | |
2730 | e[j].start = e[i].start; | |
2731 | e[j].size = find_size(e, &i, sum_extents); | |
2732 | j++; | |
2733 | if (e[j-1].size == 0) | |
2734 | break; | |
2735 | } | |
2736 | ||
2737 | pos = 0; | |
2738 | maxsize = 0; | |
2739 | start_extent = 0; | |
2740 | i = 0; | |
2741 | do { | |
2742 | unsigned long long esize; | |
2743 | ||
2744 | esize = e[i].start - pos; | |
2745 | if (esize >= maxsize) { | |
2746 | maxsize = esize; | |
2747 | start = pos; | |
2748 | start_extent = i; | |
2749 | } | |
2750 | pos = e[i].start + e[i].size; | |
2751 | i++; | |
2752 | } while (e[i-1].size); | |
2753 | free(e); | |
2754 | ||
2755 | if (start_extent > 0) | |
2756 | reserve = IMSM_RESERVED_SECTORS; /* gap between raid regions */ | |
2757 | else | |
2758 | reserve = 0; | |
2759 | ||
2760 | if (maxsize < reserve) | |
2761 | return ~0ULL; | |
2762 | ||
2763 | super->create_offset = ~((__u32) 0); | |
2764 | if (start + reserve > super->create_offset) | |
2765 | return ~0ULL; /* start overflows create_offset */ | |
2766 | super->create_offset = start + reserve; | |
2767 | ||
2768 | return maxsize - reserve; | |
2769 | } | |
2770 | ||
88c32bb1 DW |
2771 | static int is_raid_level_supported(const struct imsm_orom *orom, int level, int raiddisks) |
2772 | { | |
2773 | if (level < 0 || level == 6 || level == 4) | |
2774 | return 0; | |
2775 | ||
2776 | /* if we have an orom prevent invalid raid levels */ | |
2777 | if (orom) | |
2778 | switch (level) { | |
2779 | case 0: return imsm_orom_has_raid0(orom); | |
2780 | case 1: | |
2781 | if (raiddisks > 2) | |
2782 | return imsm_orom_has_raid1e(orom); | |
1c556e92 DW |
2783 | return imsm_orom_has_raid1(orom) && raiddisks == 2; |
2784 | case 10: return imsm_orom_has_raid10(orom) && raiddisks == 4; | |
2785 | case 5: return imsm_orom_has_raid5(orom) && raiddisks > 2; | |
88c32bb1 DW |
2786 | } |
2787 | else | |
2788 | return 1; /* not on an Intel RAID platform so anything goes */ | |
2789 | ||
2790 | return 0; | |
2791 | } | |
2792 | ||
35f81cbb | 2793 | #define pr_vrb(fmt, arg...) (void) (verbose && fprintf(stderr, Name fmt, ##arg)) |
c2c087e6 DW |
2794 | /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd |
2795 | * FIX ME add ahci details | |
2796 | */ | |
8b353278 DW |
2797 | static int validate_geometry_imsm_volume(struct supertype *st, int level, |
2798 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 2799 | unsigned long long size, char *dev, |
2c514b71 NB |
2800 | unsigned long long *freesize, |
2801 | int verbose) | |
cdddbdbc | 2802 | { |
c2c087e6 DW |
2803 | struct stat stb; |
2804 | struct intel_super *super = st->sb; | |
a20d2ba5 | 2805 | struct imsm_super *mpb = super->anchor; |
c2c087e6 DW |
2806 | struct dl *dl; |
2807 | unsigned long long pos = 0; | |
2808 | unsigned long long maxsize; | |
2809 | struct extent *e; | |
2810 | int i; | |
cdddbdbc | 2811 | |
88c32bb1 DW |
2812 | /* We must have the container info already read in. */ |
2813 | if (!super) | |
c2c087e6 DW |
2814 | return 0; |
2815 | ||
88c32bb1 | 2816 | if (!is_raid_level_supported(super->orom, level, raiddisks)) { |
1c556e92 DW |
2817 | pr_vrb(": platform does not support raid%d with %d disk%s\n", |
2818 | level, raiddisks, raiddisks > 1 ? "s" : ""); | |
c2c087e6 DW |
2819 | return 0; |
2820 | } | |
78757ce8 DW |
2821 | if (super->orom && level != 1 && |
2822 | !imsm_orom_has_chunk(super->orom, chunk)) { | |
35f81cbb | 2823 | pr_vrb(": platform does not support a chunk size of: %d\n", chunk); |
c2c087e6 | 2824 | return 0; |
88c32bb1 DW |
2825 | } |
2826 | if (layout != imsm_level_to_layout(level)) { | |
2827 | if (level == 5) | |
35f81cbb | 2828 | pr_vrb(": imsm raid 5 only supports the left-asymmetric layout\n"); |
88c32bb1 | 2829 | else if (level == 10) |
35f81cbb | 2830 | pr_vrb(": imsm raid 10 only supports the n2 layout\n"); |
88c32bb1 | 2831 | else |
35f81cbb | 2832 | pr_vrb(": imsm unknown layout %#x for this raid level %d\n", |
88c32bb1 | 2833 | layout, level); |
c2c087e6 | 2834 | return 0; |
88c32bb1 | 2835 | } |
c2c087e6 DW |
2836 | |
2837 | if (!dev) { | |
2838 | /* General test: make sure there is space for | |
2da8544a DW |
2839 | * 'raiddisks' device extents of size 'size' at a given |
2840 | * offset | |
c2c087e6 | 2841 | */ |
e46273eb | 2842 | unsigned long long minsize = size; |
2da8544a | 2843 | unsigned long long start_offset = ~0ULL; |
c2c087e6 DW |
2844 | int dcnt = 0; |
2845 | if (minsize == 0) | |
2846 | minsize = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
2847 | for (dl = super->disks; dl ; dl = dl->next) { | |
2848 | int found = 0; | |
2849 | ||
bf5a934a | 2850 | pos = 0; |
c2c087e6 DW |
2851 | i = 0; |
2852 | e = get_extents(super, dl); | |
2853 | if (!e) continue; | |
2854 | do { | |
2855 | unsigned long long esize; | |
2856 | esize = e[i].start - pos; | |
2857 | if (esize >= minsize) | |
2858 | found = 1; | |
2da8544a DW |
2859 | if (found && start_offset == ~0ULL) { |
2860 | start_offset = pos; | |
2861 | break; | |
2862 | } else if (found && pos != start_offset) { | |
2863 | found = 0; | |
2864 | break; | |
2865 | } | |
c2c087e6 DW |
2866 | pos = e[i].start + e[i].size; |
2867 | i++; | |
2868 | } while (e[i-1].size); | |
2869 | if (found) | |
2870 | dcnt++; | |
2871 | free(e); | |
2872 | } | |
2873 | if (dcnt < raiddisks) { | |
2c514b71 NB |
2874 | if (verbose) |
2875 | fprintf(stderr, Name ": imsm: Not enough " | |
2876 | "devices with space for this array " | |
2877 | "(%d < %d)\n", | |
2878 | dcnt, raiddisks); | |
c2c087e6 DW |
2879 | return 0; |
2880 | } | |
2881 | return 1; | |
2882 | } | |
0dcecb2e | 2883 | |
c2c087e6 DW |
2884 | /* This device must be a member of the set */ |
2885 | if (stat(dev, &stb) < 0) | |
2886 | return 0; | |
2887 | if ((S_IFMT & stb.st_mode) != S_IFBLK) | |
2888 | return 0; | |
2889 | for (dl = super->disks ; dl ; dl = dl->next) { | |
2890 | if (dl->major == major(stb.st_rdev) && | |
2891 | dl->minor == minor(stb.st_rdev)) | |
2892 | break; | |
2893 | } | |
2894 | if (!dl) { | |
2c514b71 NB |
2895 | if (verbose) |
2896 | fprintf(stderr, Name ": %s is not in the " | |
2897 | "same imsm set\n", dev); | |
c2c087e6 | 2898 | return 0; |
a20d2ba5 DW |
2899 | } else if (super->orom && dl->index < 0 && mpb->num_raid_devs) { |
2900 | /* If a volume is present then the current creation attempt | |
2901 | * cannot incorporate new spares because the orom may not | |
2902 | * understand this configuration (all member disks must be | |
2903 | * members of each array in the container). | |
2904 | */ | |
2905 | fprintf(stderr, Name ": %s is a spare and a volume" | |
2906 | " is already defined for this container\n", dev); | |
2907 | fprintf(stderr, Name ": The option-rom requires all member" | |
2908 | " disks to be a member of all volumes\n"); | |
2909 | return 0; | |
c2c087e6 | 2910 | } |
0dcecb2e DW |
2911 | |
2912 | /* retrieve the largest free space block */ | |
c2c087e6 DW |
2913 | e = get_extents(super, dl); |
2914 | maxsize = 0; | |
2915 | i = 0; | |
0dcecb2e DW |
2916 | if (e) { |
2917 | do { | |
2918 | unsigned long long esize; | |
2919 | ||
2920 | esize = e[i].start - pos; | |
2921 | if (esize >= maxsize) | |
2922 | maxsize = esize; | |
2923 | pos = e[i].start + e[i].size; | |
2924 | i++; | |
2925 | } while (e[i-1].size); | |
2926 | dl->e = e; | |
2927 | dl->extent_cnt = i; | |
2928 | } else { | |
2929 | if (verbose) | |
2930 | fprintf(stderr, Name ": unable to determine free space for: %s\n", | |
2931 | dev); | |
2932 | return 0; | |
2933 | } | |
2934 | if (maxsize < size) { | |
2935 | if (verbose) | |
2936 | fprintf(stderr, Name ": %s not enough space (%llu < %llu)\n", | |
2937 | dev, maxsize, size); | |
2938 | return 0; | |
2939 | } | |
2940 | ||
2941 | /* count total number of extents for merge */ | |
2942 | i = 0; | |
2943 | for (dl = super->disks; dl; dl = dl->next) | |
2944 | if (dl->e) | |
2945 | i += dl->extent_cnt; | |
2946 | ||
2947 | maxsize = merge_extents(super, i); | |
2948 | if (maxsize < size) { | |
2949 | if (verbose) | |
2950 | fprintf(stderr, Name ": not enough space after merge (%llu < %llu)\n", | |
2951 | maxsize, size); | |
2952 | return 0; | |
2953 | } else if (maxsize == ~0ULL) { | |
2954 | if (verbose) | |
2955 | fprintf(stderr, Name ": failed to merge %d extents\n", i); | |
2956 | return 0; | |
2957 | } | |
2958 | ||
c2c087e6 DW |
2959 | *freesize = maxsize; |
2960 | ||
2961 | return 1; | |
cdddbdbc DW |
2962 | } |
2963 | ||
bf5a934a DW |
2964 | static int validate_geometry_imsm(struct supertype *st, int level, int layout, |
2965 | int raiddisks, int chunk, unsigned long long size, | |
2966 | char *dev, unsigned long long *freesize, | |
2967 | int verbose) | |
2968 | { | |
2969 | int fd, cfd; | |
2970 | struct mdinfo *sra; | |
2971 | ||
2972 | /* if given unused devices create a container | |
2973 | * if given given devices in a container create a member volume | |
2974 | */ | |
2975 | if (level == LEVEL_CONTAINER) { | |
2976 | /* Must be a fresh device to add to a container */ | |
2977 | return validate_geometry_imsm_container(st, level, layout, | |
2978 | raiddisks, chunk, size, | |
2979 | dev, freesize, | |
2980 | verbose); | |
2981 | } | |
2982 | ||
8592f29d N |
2983 | if (!dev) { |
2984 | if (st->sb && freesize) { | |
2985 | /* Should do auto-layout here */ | |
2986 | fprintf(stderr, Name ": IMSM does not support auto-layout yet\n"); | |
2987 | return 0; | |
2988 | } | |
2989 | return 1; | |
2990 | } | |
bf5a934a DW |
2991 | if (st->sb) { |
2992 | /* creating in a given container */ | |
2993 | return validate_geometry_imsm_volume(st, level, layout, | |
2994 | raiddisks, chunk, size, | |
2995 | dev, freesize, verbose); | |
2996 | } | |
2997 | ||
2998 | /* limit creation to the following levels */ | |
2999 | if (!dev) | |
3000 | switch (level) { | |
3001 | case 0: | |
3002 | case 1: | |
3003 | case 10: | |
3004 | case 5: | |
3005 | break; | |
3006 | default: | |
3007 | return 1; | |
3008 | } | |
3009 | ||
3010 | /* This device needs to be a device in an 'imsm' container */ | |
3011 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
3012 | if (fd >= 0) { | |
3013 | if (verbose) | |
3014 | fprintf(stderr, | |
3015 | Name ": Cannot create this array on device %s\n", | |
3016 | dev); | |
3017 | close(fd); | |
3018 | return 0; | |
3019 | } | |
3020 | if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) { | |
3021 | if (verbose) | |
3022 | fprintf(stderr, Name ": Cannot open %s: %s\n", | |
3023 | dev, strerror(errno)); | |
3024 | return 0; | |
3025 | } | |
3026 | /* Well, it is in use by someone, maybe an 'imsm' container. */ | |
3027 | cfd = open_container(fd); | |
3028 | if (cfd < 0) { | |
3029 | close(fd); | |
3030 | if (verbose) | |
3031 | fprintf(stderr, Name ": Cannot use %s: It is busy\n", | |
3032 | dev); | |
3033 | return 0; | |
3034 | } | |
3035 | sra = sysfs_read(cfd, 0, GET_VERSION); | |
3036 | close(fd); | |
3037 | if (sra && sra->array.major_version == -1 && | |
3038 | strcmp(sra->text_version, "imsm") == 0) { | |
3039 | /* This is a member of a imsm container. Load the container | |
3040 | * and try to create a volume | |
3041 | */ | |
3042 | struct intel_super *super; | |
3043 | ||
3044 | if (load_super_imsm_all(st, cfd, (void **) &super, NULL, 1) == 0) { | |
3045 | st->sb = super; | |
3046 | st->container_dev = fd2devnum(cfd); | |
3047 | close(cfd); | |
3048 | return validate_geometry_imsm_volume(st, level, layout, | |
3049 | raiddisks, chunk, | |
3050 | size, dev, | |
3051 | freesize, verbose); | |
3052 | } | |
3053 | close(cfd); | |
3054 | } else /* may belong to another container */ | |
3055 | return 0; | |
3056 | ||
3057 | return 1; | |
3058 | } | |
0e600426 | 3059 | #endif /* MDASSEMBLE */ |
bf5a934a | 3060 | |
cdddbdbc DW |
3061 | static struct mdinfo *container_content_imsm(struct supertype *st) |
3062 | { | |
4f5bc454 DW |
3063 | /* Given a container loaded by load_super_imsm_all, |
3064 | * extract information about all the arrays into | |
3065 | * an mdinfo tree. | |
3066 | * | |
3067 | * For each imsm_dev create an mdinfo, fill it in, | |
3068 | * then look for matching devices in super->disks | |
3069 | * and create appropriate device mdinfo. | |
3070 | */ | |
3071 | struct intel_super *super = st->sb; | |
949c47a0 | 3072 | struct imsm_super *mpb = super->anchor; |
4f5bc454 DW |
3073 | struct mdinfo *rest = NULL; |
3074 | int i; | |
cdddbdbc | 3075 | |
604b746f JD |
3076 | /* do not assemble arrays that might have bad blocks */ |
3077 | if (imsm_bbm_log_size(super->anchor)) { | |
3078 | fprintf(stderr, Name ": BBM log found in metadata. " | |
3079 | "Cannot activate array(s).\n"); | |
3080 | return NULL; | |
3081 | } | |
3082 | ||
4f5bc454 | 3083 | for (i = 0; i < mpb->num_raid_devs; i++) { |
949c47a0 | 3084 | struct imsm_dev *dev = get_imsm_dev(super, i); |
a965f303 | 3085 | struct imsm_map *map = get_imsm_map(dev, 0); |
4f5bc454 | 3086 | struct mdinfo *this; |
4f5bc454 DW |
3087 | int slot; |
3088 | ||
3089 | this = malloc(sizeof(*this)); | |
3090 | memset(this, 0, sizeof(*this)); | |
3091 | this->next = rest; | |
4f5bc454 | 3092 | |
301406c9 DW |
3093 | super->current_vol = i; |
3094 | getinfo_super_imsm_volume(st, this); | |
4f5bc454 | 3095 | for (slot = 0 ; slot < map->num_members; slot++) { |
4f5bc454 DW |
3096 | struct mdinfo *info_d; |
3097 | struct dl *d; | |
3098 | int idx; | |
9a1608e5 | 3099 | int skip; |
4f5bc454 | 3100 | __u32 s; |
7eef0453 | 3101 | __u32 ord; |
4f5bc454 | 3102 | |
9a1608e5 | 3103 | skip = 0; |
ff077194 | 3104 | idx = get_imsm_disk_idx(dev, slot); |
7eef0453 | 3105 | ord = get_imsm_ord_tbl_ent(dev, slot); |
4f5bc454 DW |
3106 | for (d = super->disks; d ; d = d->next) |
3107 | if (d->index == idx) | |
3108 | break; | |
3109 | ||
3110 | if (d == NULL) | |
9a1608e5 DW |
3111 | skip = 1; |
3112 | ||
f2f27e63 | 3113 | s = d ? d->disk.status : 0; |
9a1608e5 DW |
3114 | if (s & FAILED_DISK) |
3115 | skip = 1; | |
3116 | if (!(s & USABLE_DISK)) | |
3117 | skip = 1; | |
7eef0453 DW |
3118 | if (ord & IMSM_ORD_REBUILD) |
3119 | skip = 1; | |
9a1608e5 DW |
3120 | |
3121 | /* | |
3122 | * if we skip some disks the array will be assmebled degraded; | |
3123 | * reset resync start to avoid a dirty-degraded situation | |
3124 | * | |
3125 | * FIXME handle dirty degraded | |
3126 | */ | |
3127 | if (skip && !dev->vol.dirty) | |
3128 | this->resync_start = ~0ULL; | |
3129 | if (skip) | |
3130 | continue; | |
4f5bc454 DW |
3131 | |
3132 | info_d = malloc(sizeof(*info_d)); | |
9a1608e5 DW |
3133 | if (!info_d) { |
3134 | fprintf(stderr, Name ": failed to allocate disk" | |
3135 | " for volume %s\n", (char *) dev->volume); | |
3136 | free(this); | |
3137 | this = rest; | |
3138 | break; | |
3139 | } | |
4f5bc454 DW |
3140 | memset(info_d, 0, sizeof(*info_d)); |
3141 | info_d->next = this->devs; | |
3142 | this->devs = info_d; | |
3143 | ||
4f5bc454 DW |
3144 | info_d->disk.number = d->index; |
3145 | info_d->disk.major = d->major; | |
3146 | info_d->disk.minor = d->minor; | |
3147 | info_d->disk.raid_disk = slot; | |
4f5bc454 DW |
3148 | |
3149 | this->array.working_disks++; | |
3150 | ||
3151 | info_d->events = __le32_to_cpu(mpb->generation_num); | |
3152 | info_d->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
3153 | info_d->component_size = __le32_to_cpu(map->blocks_per_member); | |
3154 | if (d->devname) | |
3155 | strcpy(info_d->name, d->devname); | |
3156 | } | |
9a1608e5 | 3157 | rest = this; |
4f5bc454 DW |
3158 | } |
3159 | ||
3160 | return rest; | |
cdddbdbc DW |
3161 | } |
3162 | ||
845dea95 | 3163 | |
0e600426 | 3164 | #ifndef MDASSEMBLE |
cba0191b NB |
3165 | static int imsm_open_new(struct supertype *c, struct active_array *a, |
3166 | char *inst) | |
845dea95 | 3167 | { |
0372d5a2 | 3168 | struct intel_super *super = c->sb; |
949c47a0 | 3169 | struct imsm_super *mpb = super->anchor; |
0372d5a2 | 3170 | |
949c47a0 | 3171 | if (atoi(inst) >= mpb->num_raid_devs) { |
0372d5a2 DW |
3172 | fprintf(stderr, "%s: subarry index %d, out of range\n", |
3173 | __func__, atoi(inst)); | |
3174 | return -ENODEV; | |
3175 | } | |
3176 | ||
4e6e574a | 3177 | dprintf("imsm: open_new %s\n", inst); |
cba0191b | 3178 | a->info.container_member = atoi(inst); |
845dea95 NB |
3179 | return 0; |
3180 | } | |
3181 | ||
fb49eef2 | 3182 | static __u8 imsm_check_degraded(struct intel_super *super, struct imsm_dev *dev, int failed) |
c2a1e7da | 3183 | { |
a965f303 | 3184 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2a1e7da DW |
3185 | |
3186 | if (!failed) | |
3393c6af DW |
3187 | return map->map_state == IMSM_T_STATE_UNINITIALIZED ? |
3188 | IMSM_T_STATE_UNINITIALIZED : IMSM_T_STATE_NORMAL; | |
c2a1e7da DW |
3189 | |
3190 | switch (get_imsm_raid_level(map)) { | |
3191 | case 0: | |
3192 | return IMSM_T_STATE_FAILED; | |
3193 | break; | |
3194 | case 1: | |
3195 | if (failed < map->num_members) | |
3196 | return IMSM_T_STATE_DEGRADED; | |
3197 | else | |
3198 | return IMSM_T_STATE_FAILED; | |
3199 | break; | |
3200 | case 10: | |
3201 | { | |
3202 | /** | |
c92a2527 DW |
3203 | * check to see if any mirrors have failed, otherwise we |
3204 | * are degraded. Even numbered slots are mirrored on | |
3205 | * slot+1 | |
c2a1e7da | 3206 | */ |
c2a1e7da | 3207 | int i; |
d9b420a5 N |
3208 | /* gcc -Os complains that this is unused */ |
3209 | int insync = insync; | |
c2a1e7da DW |
3210 | |
3211 | for (i = 0; i < map->num_members; i++) { | |
c92a2527 DW |
3212 | __u32 ord = get_imsm_ord_tbl_ent(dev, i); |
3213 | int idx = ord_to_idx(ord); | |
3214 | struct imsm_disk *disk; | |
c2a1e7da | 3215 | |
c92a2527 DW |
3216 | /* reset the potential in-sync count on even-numbered |
3217 | * slots. num_copies is always 2 for imsm raid10 | |
3218 | */ | |
3219 | if ((i & 1) == 0) | |
3220 | insync = 2; | |
c2a1e7da | 3221 | |
c92a2527 | 3222 | disk = get_imsm_disk(super, idx); |
f2f27e63 | 3223 | if (!disk || disk->status & FAILED_DISK || |
c92a2527 DW |
3224 | ord & IMSM_ORD_REBUILD) |
3225 | insync--; | |
c2a1e7da | 3226 | |
c92a2527 DW |
3227 | /* no in-sync disks left in this mirror the |
3228 | * array has failed | |
3229 | */ | |
3230 | if (insync == 0) | |
3231 | return IMSM_T_STATE_FAILED; | |
c2a1e7da DW |
3232 | } |
3233 | ||
3234 | return IMSM_T_STATE_DEGRADED; | |
3235 | } | |
3236 | case 5: | |
3237 | if (failed < 2) | |
3238 | return IMSM_T_STATE_DEGRADED; | |
3239 | else | |
3240 | return IMSM_T_STATE_FAILED; | |
3241 | break; | |
3242 | default: | |
3243 | break; | |
3244 | } | |
3245 | ||
3246 | return map->map_state; | |
3247 | } | |
3248 | ||
ff077194 | 3249 | static int imsm_count_failed(struct intel_super *super, struct imsm_dev *dev) |
c2a1e7da DW |
3250 | { |
3251 | int i; | |
3252 | int failed = 0; | |
3253 | struct imsm_disk *disk; | |
ff077194 | 3254 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2a1e7da DW |
3255 | |
3256 | for (i = 0; i < map->num_members; i++) { | |
b10b37b8 DW |
3257 | __u32 ord = get_imsm_ord_tbl_ent(dev, i); |
3258 | int idx = ord_to_idx(ord); | |
c2a1e7da | 3259 | |
949c47a0 | 3260 | disk = get_imsm_disk(super, idx); |
f2f27e63 | 3261 | if (!disk || disk->status & FAILED_DISK || |
b10b37b8 | 3262 | ord & IMSM_ORD_REBUILD) |
fcb84475 | 3263 | failed++; |
c2a1e7da DW |
3264 | } |
3265 | ||
3266 | return failed; | |
845dea95 NB |
3267 | } |
3268 | ||
0c046afd DW |
3269 | static int is_resyncing(struct imsm_dev *dev) |
3270 | { | |
3271 | struct imsm_map *migr_map; | |
3272 | ||
3273 | if (!dev->vol.migr_state) | |
3274 | return 0; | |
3275 | ||
e3bba0e0 | 3276 | if (dev->vol.migr_type == MIGR_INIT) |
0c046afd DW |
3277 | return 1; |
3278 | ||
3279 | migr_map = get_imsm_map(dev, 1); | |
3280 | ||
3281 | if (migr_map->map_state == IMSM_T_STATE_NORMAL) | |
3282 | return 1; | |
3283 | else | |
3284 | return 0; | |
3285 | } | |
3286 | ||
3287 | static int is_rebuilding(struct imsm_dev *dev) | |
3288 | { | |
3289 | struct imsm_map *migr_map; | |
3290 | ||
3291 | if (!dev->vol.migr_state) | |
3292 | return 0; | |
3293 | ||
e3bba0e0 | 3294 | if (dev->vol.migr_type != MIGR_REBUILD) |
0c046afd DW |
3295 | return 0; |
3296 | ||
3297 | migr_map = get_imsm_map(dev, 1); | |
3298 | ||
3299 | if (migr_map->map_state == IMSM_T_STATE_DEGRADED) | |
3300 | return 1; | |
3301 | else | |
3302 | return 0; | |
3303 | } | |
3304 | ||
47ee5a45 DW |
3305 | static void mark_failure(struct imsm_disk *disk) |
3306 | { | |
f2f27e63 | 3307 | if (disk->status & FAILED_DISK) |
47ee5a45 | 3308 | return; |
f2f27e63 | 3309 | disk->status |= FAILED_DISK; |
47ee5a45 DW |
3310 | disk->scsi_id = __cpu_to_le32(~(__u32)0); |
3311 | memmove(&disk->serial[0], &disk->serial[1], MAX_RAID_SERIAL_LEN - 1); | |
3312 | } | |
3313 | ||
0c046afd DW |
3314 | /* Handle dirty -> clean transititions and resync. Degraded and rebuild |
3315 | * states are handled in imsm_set_disk() with one exception, when a | |
3316 | * resync is stopped due to a new failure this routine will set the | |
3317 | * 'degraded' state for the array. | |
3318 | */ | |
01f157d7 | 3319 | static int imsm_set_array_state(struct active_array *a, int consistent) |
a862209d DW |
3320 | { |
3321 | int inst = a->info.container_member; | |
3322 | struct intel_super *super = a->container->sb; | |
949c47a0 | 3323 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
a965f303 | 3324 | struct imsm_map *map = get_imsm_map(dev, 0); |
0c046afd DW |
3325 | int failed = imsm_count_failed(super, dev); |
3326 | __u8 map_state = imsm_check_degraded(super, dev, failed); | |
a862209d | 3327 | |
47ee5a45 DW |
3328 | /* before we activate this array handle any missing disks */ |
3329 | if (consistent == 2 && super->missing) { | |
3330 | struct dl *dl; | |
3331 | ||
3332 | dprintf("imsm: mark missing\n"); | |
3333 | end_migration(dev, map_state); | |
3334 | for (dl = super->missing; dl; dl = dl->next) | |
3335 | mark_failure(&dl->disk); | |
3336 | super->updates_pending++; | |
3337 | } | |
3338 | ||
0c046afd | 3339 | if (consistent == 2 && |
593add1b | 3340 | (!is_resync_complete(a) || |
0c046afd DW |
3341 | map_state != IMSM_T_STATE_NORMAL || |
3342 | dev->vol.migr_state)) | |
01f157d7 | 3343 | consistent = 0; |
272906ef | 3344 | |
593add1b | 3345 | if (is_resync_complete(a)) { |
0c046afd DW |
3346 | /* complete intialization / resync, |
3347 | * recovery is completed in ->set_disk | |
3348 | */ | |
3349 | if (is_resyncing(dev)) { | |
3350 | dprintf("imsm: mark resync done\n"); | |
f8f603f1 | 3351 | end_migration(dev, map_state); |
115c3803 | 3352 | super->updates_pending++; |
115c3803 | 3353 | } |
0c046afd DW |
3354 | } else if (!is_resyncing(dev) && !failed) { |
3355 | /* mark the start of the init process if nothing is failed */ | |
3356 | dprintf("imsm: mark resync start (%llu)\n", a->resync_start); | |
e3bba0e0 DW |
3357 | if (map->map_state == IMSM_T_STATE_NORMAL) |
3358 | migrate(dev, IMSM_T_STATE_NORMAL, MIGR_REBUILD); | |
3359 | else | |
3360 | migrate(dev, IMSM_T_STATE_NORMAL, MIGR_INIT); | |
3393c6af | 3361 | super->updates_pending++; |
115c3803 | 3362 | } |
a862209d | 3363 | |
f8f603f1 DW |
3364 | /* check if we can update the migration checkpoint */ |
3365 | if (dev->vol.migr_state && | |
3366 | __le32_to_cpu(dev->vol.curr_migr_unit) != a->resync_start) { | |
3367 | dprintf("imsm: checkpoint migration (%llu)\n", a->resync_start); | |
3368 | dev->vol.curr_migr_unit = __cpu_to_le32(a->resync_start); | |
3369 | super->updates_pending++; | |
3370 | } | |
3371 | ||
3393c6af | 3372 | /* mark dirty / clean */ |
0c046afd | 3373 | if (dev->vol.dirty != !consistent) { |
3393c6af | 3374 | dprintf("imsm: mark '%s' (%llu)\n", |
0c046afd DW |
3375 | consistent ? "clean" : "dirty", a->resync_start); |
3376 | if (consistent) | |
3377 | dev->vol.dirty = 0; | |
3378 | else | |
3379 | dev->vol.dirty = 1; | |
a862209d DW |
3380 | super->updates_pending++; |
3381 | } | |
01f157d7 | 3382 | return consistent; |
a862209d DW |
3383 | } |
3384 | ||
8d45d196 | 3385 | static void imsm_set_disk(struct active_array *a, int n, int state) |
845dea95 | 3386 | { |
8d45d196 DW |
3387 | int inst = a->info.container_member; |
3388 | struct intel_super *super = a->container->sb; | |
949c47a0 | 3389 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
a965f303 | 3390 | struct imsm_map *map = get_imsm_map(dev, 0); |
8d45d196 | 3391 | struct imsm_disk *disk; |
0c046afd | 3392 | int failed; |
b10b37b8 | 3393 | __u32 ord; |
0c046afd | 3394 | __u8 map_state; |
8d45d196 DW |
3395 | |
3396 | if (n > map->num_members) | |
3397 | fprintf(stderr, "imsm: set_disk %d out of range 0..%d\n", | |
3398 | n, map->num_members - 1); | |
3399 | ||
3400 | if (n < 0) | |
3401 | return; | |
3402 | ||
4e6e574a | 3403 | dprintf("imsm: set_disk %d:%x\n", n, state); |
8d45d196 | 3404 | |
b10b37b8 DW |
3405 | ord = get_imsm_ord_tbl_ent(dev, n); |
3406 | disk = get_imsm_disk(super, ord_to_idx(ord)); | |
8d45d196 | 3407 | |
5802a811 | 3408 | /* check for new failures */ |
f2f27e63 | 3409 | if ((state & DS_FAULTY) && !(disk->status & FAILED_DISK)) { |
47ee5a45 | 3410 | mark_failure(disk); |
5802a811 | 3411 | super->updates_pending++; |
8d45d196 | 3412 | } |
47ee5a45 | 3413 | |
19859edc | 3414 | /* check if in_sync */ |
b10b37b8 DW |
3415 | if (state & DS_INSYNC && ord & IMSM_ORD_REBUILD) { |
3416 | struct imsm_map *migr_map = get_imsm_map(dev, 1); | |
3417 | ||
3418 | set_imsm_ord_tbl_ent(migr_map, n, ord_to_idx(ord)); | |
19859edc DW |
3419 | super->updates_pending++; |
3420 | } | |
8d45d196 | 3421 | |
0c046afd DW |
3422 | failed = imsm_count_failed(super, dev); |
3423 | map_state = imsm_check_degraded(super, dev, failed); | |
5802a811 | 3424 | |
0c046afd DW |
3425 | /* check if recovery complete, newly degraded, or failed */ |
3426 | if (map_state == IMSM_T_STATE_NORMAL && is_rebuilding(dev)) { | |
f8f603f1 | 3427 | end_migration(dev, map_state); |
0c046afd DW |
3428 | super->updates_pending++; |
3429 | } else if (map_state == IMSM_T_STATE_DEGRADED && | |
3430 | map->map_state != map_state && | |
3431 | !dev->vol.migr_state) { | |
3432 | dprintf("imsm: mark degraded\n"); | |
3433 | map->map_state = map_state; | |
3434 | super->updates_pending++; | |
3435 | } else if (map_state == IMSM_T_STATE_FAILED && | |
3436 | map->map_state != map_state) { | |
3437 | dprintf("imsm: mark failed\n"); | |
f8f603f1 | 3438 | end_migration(dev, map_state); |
0c046afd | 3439 | super->updates_pending++; |
5802a811 | 3440 | } |
845dea95 NB |
3441 | } |
3442 | ||
c2a1e7da DW |
3443 | static int store_imsm_mpb(int fd, struct intel_super *super) |
3444 | { | |
949c47a0 | 3445 | struct imsm_super *mpb = super->anchor; |
c2a1e7da DW |
3446 | __u32 mpb_size = __le32_to_cpu(mpb->mpb_size); |
3447 | unsigned long long dsize; | |
3448 | unsigned long long sectors; | |
3449 | ||
3450 | get_dev_size(fd, NULL, &dsize); | |
3451 | ||
272f648f DW |
3452 | if (mpb_size > 512) { |
3453 | /* -1 to account for anchor */ | |
3454 | sectors = mpb_sectors(mpb) - 1; | |
c2a1e7da | 3455 | |
272f648f DW |
3456 | /* write the extended mpb to the sectors preceeding the anchor */ |
3457 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) | |
3458 | return 1; | |
c2a1e7da | 3459 | |
99e29264 | 3460 | if (write(fd, super->buf + 512, 512 * sectors) != 512 * sectors) |
272f648f DW |
3461 | return 1; |
3462 | } | |
c2a1e7da | 3463 | |
272f648f DW |
3464 | /* first block is stored on second to last sector of the disk */ |
3465 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
c2a1e7da DW |
3466 | return 1; |
3467 | ||
272f648f | 3468 | if (write(fd, super->buf, 512) != 512) |
c2a1e7da DW |
3469 | return 1; |
3470 | ||
c2a1e7da DW |
3471 | return 0; |
3472 | } | |
3473 | ||
2e735d19 | 3474 | static void imsm_sync_metadata(struct supertype *container) |
845dea95 | 3475 | { |
2e735d19 | 3476 | struct intel_super *super = container->sb; |
c2a1e7da DW |
3477 | |
3478 | if (!super->updates_pending) | |
3479 | return; | |
3480 | ||
c2c087e6 | 3481 | write_super_imsm(super, 0); |
c2a1e7da DW |
3482 | |
3483 | super->updates_pending = 0; | |
845dea95 NB |
3484 | } |
3485 | ||
272906ef DW |
3486 | static struct dl *imsm_readd(struct intel_super *super, int idx, struct active_array *a) |
3487 | { | |
3488 | struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member); | |
ff077194 | 3489 | int i = get_imsm_disk_idx(dev, idx); |
272906ef DW |
3490 | struct dl *dl; |
3491 | ||
3492 | for (dl = super->disks; dl; dl = dl->next) | |
3493 | if (dl->index == i) | |
3494 | break; | |
3495 | ||
f2f27e63 | 3496 | if (dl && dl->disk.status & FAILED_DISK) |
272906ef DW |
3497 | dl = NULL; |
3498 | ||
3499 | if (dl) | |
3500 | dprintf("%s: found %x:%x\n", __func__, dl->major, dl->minor); | |
3501 | ||
3502 | return dl; | |
3503 | } | |
3504 | ||
a20d2ba5 DW |
3505 | static struct dl *imsm_add_spare(struct intel_super *super, int slot, |
3506 | struct active_array *a, int activate_new) | |
272906ef DW |
3507 | { |
3508 | struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member); | |
e553d2a4 | 3509 | int idx = get_imsm_disk_idx(dev, slot); |
a20d2ba5 DW |
3510 | struct imsm_super *mpb = super->anchor; |
3511 | struct imsm_map *map; | |
272906ef DW |
3512 | unsigned long long esize; |
3513 | unsigned long long pos; | |
3514 | struct mdinfo *d; | |
3515 | struct extent *ex; | |
a20d2ba5 | 3516 | int i, j; |
272906ef DW |
3517 | int found; |
3518 | __u32 array_start; | |
a20d2ba5 | 3519 | __u32 blocks; |
272906ef DW |
3520 | struct dl *dl; |
3521 | ||
3522 | for (dl = super->disks; dl; dl = dl->next) { | |
3523 | /* If in this array, skip */ | |
3524 | for (d = a->info.devs ; d ; d = d->next) | |
e553d2a4 DW |
3525 | if (d->state_fd >= 0 && |
3526 | d->disk.major == dl->major && | |
272906ef DW |
3527 | d->disk.minor == dl->minor) { |
3528 | dprintf("%x:%x already in array\n", dl->major, dl->minor); | |
3529 | break; | |
3530 | } | |
3531 | if (d) | |
3532 | continue; | |
3533 | ||
e553d2a4 | 3534 | /* skip in use or failed drives */ |
f2f27e63 | 3535 | if (dl->disk.status & FAILED_DISK || idx == dl->index) { |
9a1608e5 DW |
3536 | dprintf("%x:%x status ( %s%s)\n", |
3537 | dl->major, dl->minor, | |
f2f27e63 | 3538 | dl->disk.status & FAILED_DISK ? "failed " : "", |
e553d2a4 | 3539 | idx == dl->index ? "in use " : ""); |
9a1608e5 DW |
3540 | continue; |
3541 | } | |
3542 | ||
a20d2ba5 DW |
3543 | /* skip pure spares when we are looking for partially |
3544 | * assimilated drives | |
3545 | */ | |
3546 | if (dl->index == -1 && !activate_new) | |
3547 | continue; | |
3548 | ||
272906ef | 3549 | /* Does this unused device have the requisite free space? |
a20d2ba5 | 3550 | * It needs to be able to cover all member volumes |
272906ef DW |
3551 | */ |
3552 | ex = get_extents(super, dl); | |
3553 | if (!ex) { | |
3554 | dprintf("cannot get extents\n"); | |
3555 | continue; | |
3556 | } | |
a20d2ba5 DW |
3557 | for (i = 0; i < mpb->num_raid_devs; i++) { |
3558 | dev = get_imsm_dev(super, i); | |
3559 | map = get_imsm_map(dev, 0); | |
272906ef | 3560 | |
a20d2ba5 DW |
3561 | /* check if this disk is already a member of |
3562 | * this array | |
272906ef | 3563 | */ |
a20d2ba5 DW |
3564 | for (j = 0; j < map->num_members; j++) |
3565 | if (get_imsm_disk_idx(dev, j) == dl->index) | |
3566 | break; | |
3567 | if (j < map->num_members) | |
3568 | continue; | |
3569 | ||
3570 | found = 0; | |
3571 | j = 0; | |
3572 | pos = 0; | |
3573 | array_start = __le32_to_cpu(map->pba_of_lba0); | |
3574 | blocks = __le32_to_cpu(map->blocks_per_member); | |
3575 | ||
3576 | do { | |
3577 | /* check that we can start at pba_of_lba0 with | |
3578 | * blocks_per_member of space | |
3579 | */ | |
3580 | esize = ex[j].start - pos; | |
3581 | if (array_start >= pos && | |
3582 | array_start + blocks < ex[j].start) { | |
3583 | found = 1; | |
3584 | break; | |
3585 | } | |
3586 | pos = ex[j].start + ex[j].size; | |
3587 | j++; | |
3588 | } while (ex[j-1].size); | |
3589 | ||
3590 | if (!found) | |
272906ef | 3591 | break; |
a20d2ba5 | 3592 | } |
272906ef DW |
3593 | |
3594 | free(ex); | |
a20d2ba5 DW |
3595 | if (i < mpb->num_raid_devs) { |
3596 | dprintf("%x:%x does not have %u at %u\n", | |
272906ef | 3597 | dl->major, dl->minor, |
a20d2ba5 | 3598 | blocks, array_start); |
272906ef DW |
3599 | /* No room */ |
3600 | continue; | |
a20d2ba5 DW |
3601 | } |
3602 | return dl; | |
272906ef DW |
3603 | } |
3604 | ||
3605 | return dl; | |
3606 | } | |
3607 | ||
88758e9d DW |
3608 | static struct mdinfo *imsm_activate_spare(struct active_array *a, |
3609 | struct metadata_update **updates) | |
3610 | { | |
3611 | /** | |
d23fe947 DW |
3612 | * Find a device with unused free space and use it to replace a |
3613 | * failed/vacant region in an array. We replace failed regions one a | |
3614 | * array at a time. The result is that a new spare disk will be added | |
3615 | * to the first failed array and after the monitor has finished | |
3616 | * propagating failures the remainder will be consumed. | |
88758e9d | 3617 | * |
d23fe947 DW |
3618 | * FIXME add a capability for mdmon to request spares from another |
3619 | * container. | |
88758e9d DW |
3620 | */ |
3621 | ||
3622 | struct intel_super *super = a->container->sb; | |
88758e9d | 3623 | int inst = a->info.container_member; |
949c47a0 | 3624 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
a965f303 | 3625 | struct imsm_map *map = get_imsm_map(dev, 0); |
88758e9d DW |
3626 | int failed = a->info.array.raid_disks; |
3627 | struct mdinfo *rv = NULL; | |
3628 | struct mdinfo *d; | |
3629 | struct mdinfo *di; | |
3630 | struct metadata_update *mu; | |
3631 | struct dl *dl; | |
3632 | struct imsm_update_activate_spare *u; | |
3633 | int num_spares = 0; | |
3634 | int i; | |
3635 | ||
3636 | for (d = a->info.devs ; d ; d = d->next) { | |
3637 | if ((d->curr_state & DS_FAULTY) && | |
3638 | d->state_fd >= 0) | |
3639 | /* wait for Removal to happen */ | |
3640 | return NULL; | |
3641 | if (d->state_fd >= 0) | |
3642 | failed--; | |
3643 | } | |
3644 | ||
3645 | dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n", | |
3646 | inst, failed, a->info.array.raid_disks, a->info.array.level); | |
fb49eef2 | 3647 | if (imsm_check_degraded(super, dev, failed) != IMSM_T_STATE_DEGRADED) |
88758e9d DW |
3648 | return NULL; |
3649 | ||
3650 | /* For each slot, if it is not working, find a spare */ | |
88758e9d DW |
3651 | for (i = 0; i < a->info.array.raid_disks; i++) { |
3652 | for (d = a->info.devs ; d ; d = d->next) | |
3653 | if (d->disk.raid_disk == i) | |
3654 | break; | |
3655 | dprintf("found %d: %p %x\n", i, d, d?d->curr_state:0); | |
3656 | if (d && (d->state_fd >= 0)) | |
3657 | continue; | |
3658 | ||
272906ef | 3659 | /* |
a20d2ba5 DW |
3660 | * OK, this device needs recovery. Try to re-add the |
3661 | * previous occupant of this slot, if this fails see if | |
3662 | * we can continue the assimilation of a spare that was | |
3663 | * partially assimilated, finally try to activate a new | |
3664 | * spare. | |
272906ef DW |
3665 | */ |
3666 | dl = imsm_readd(super, i, a); | |
3667 | if (!dl) | |
a20d2ba5 DW |
3668 | dl = imsm_add_spare(super, i, a, 0); |
3669 | if (!dl) | |
3670 | dl = imsm_add_spare(super, i, a, 1); | |
272906ef DW |
3671 | if (!dl) |
3672 | continue; | |
3673 | ||
3674 | /* found a usable disk with enough space */ | |
3675 | di = malloc(sizeof(*di)); | |
79244939 DW |
3676 | if (!di) |
3677 | continue; | |
272906ef DW |
3678 | memset(di, 0, sizeof(*di)); |
3679 | ||
3680 | /* dl->index will be -1 in the case we are activating a | |
3681 | * pristine spare. imsm_process_update() will create a | |
3682 | * new index in this case. Once a disk is found to be | |
3683 | * failed in all member arrays it is kicked from the | |
3684 | * metadata | |
3685 | */ | |
3686 | di->disk.number = dl->index; | |
d23fe947 | 3687 | |
272906ef DW |
3688 | /* (ab)use di->devs to store a pointer to the device |
3689 | * we chose | |
3690 | */ | |
3691 | di->devs = (struct mdinfo *) dl; | |
3692 | ||
3693 | di->disk.raid_disk = i; | |
3694 | di->disk.major = dl->major; | |
3695 | di->disk.minor = dl->minor; | |
3696 | di->disk.state = 0; | |
3697 | di->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
3698 | di->component_size = a->info.component_size; | |
3699 | di->container_member = inst; | |
3700 | di->next = rv; | |
3701 | rv = di; | |
3702 | num_spares++; | |
3703 | dprintf("%x:%x to be %d at %llu\n", dl->major, dl->minor, | |
3704 | i, di->data_offset); | |
88758e9d | 3705 | |
272906ef | 3706 | break; |
88758e9d DW |
3707 | } |
3708 | ||
3709 | if (!rv) | |
3710 | /* No spares found */ | |
3711 | return rv; | |
3712 | /* Now 'rv' has a list of devices to return. | |
3713 | * Create a metadata_update record to update the | |
3714 | * disk_ord_tbl for the array | |
3715 | */ | |
3716 | mu = malloc(sizeof(*mu)); | |
79244939 DW |
3717 | if (mu) { |
3718 | mu->buf = malloc(sizeof(struct imsm_update_activate_spare) * num_spares); | |
3719 | if (mu->buf == NULL) { | |
3720 | free(mu); | |
3721 | mu = NULL; | |
3722 | } | |
3723 | } | |
3724 | if (!mu) { | |
3725 | while (rv) { | |
3726 | struct mdinfo *n = rv->next; | |
3727 | ||
3728 | free(rv); | |
3729 | rv = n; | |
3730 | } | |
3731 | return NULL; | |
3732 | } | |
3733 | ||
88758e9d DW |
3734 | mu->space = NULL; |
3735 | mu->len = sizeof(struct imsm_update_activate_spare) * num_spares; | |
3736 | mu->next = *updates; | |
3737 | u = (struct imsm_update_activate_spare *) mu->buf; | |
3738 | ||
3739 | for (di = rv ; di ; di = di->next) { | |
3740 | u->type = update_activate_spare; | |
d23fe947 DW |
3741 | u->dl = (struct dl *) di->devs; |
3742 | di->devs = NULL; | |
88758e9d DW |
3743 | u->slot = di->disk.raid_disk; |
3744 | u->array = inst; | |
3745 | u->next = u + 1; | |
3746 | u++; | |
3747 | } | |
3748 | (u-1)->next = NULL; | |
3749 | *updates = mu; | |
3750 | ||
3751 | return rv; | |
3752 | } | |
3753 | ||
54c2c1ea | 3754 | static int disks_overlap(struct intel_super *super, int idx, struct imsm_update_create_array *u) |
8273f55e | 3755 | { |
54c2c1ea DW |
3756 | struct imsm_dev *dev = get_imsm_dev(super, idx); |
3757 | struct imsm_map *map = get_imsm_map(dev, 0); | |
3758 | struct imsm_map *new_map = get_imsm_map(&u->dev, 0); | |
3759 | struct disk_info *inf = get_disk_info(u); | |
3760 | struct imsm_disk *disk; | |
8273f55e DW |
3761 | int i; |
3762 | int j; | |
8273f55e | 3763 | |
54c2c1ea DW |
3764 | for (i = 0; i < map->num_members; i++) { |
3765 | disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i)); | |
3766 | for (j = 0; j < new_map->num_members; j++) | |
3767 | if (serialcmp(disk->serial, inf[j].serial) == 0) | |
8273f55e DW |
3768 | return 1; |
3769 | } | |
3770 | ||
3771 | return 0; | |
3772 | } | |
3773 | ||
24565c9a | 3774 | static void imsm_delete(struct intel_super *super, struct dl **dlp, int index); |
ae6aad82 | 3775 | |
e8319a19 DW |
3776 | static void imsm_process_update(struct supertype *st, |
3777 | struct metadata_update *update) | |
3778 | { | |
3779 | /** | |
3780 | * crack open the metadata_update envelope to find the update record | |
3781 | * update can be one of: | |
3782 | * update_activate_spare - a spare device has replaced a failed | |
3783 | * device in an array, update the disk_ord_tbl. If this disk is | |
3784 | * present in all member arrays then also clear the SPARE_DISK | |
3785 | * flag | |
3786 | */ | |
3787 | struct intel_super *super = st->sb; | |
4d7b1503 | 3788 | struct imsm_super *mpb; |
e8319a19 DW |
3789 | enum imsm_update_type type = *(enum imsm_update_type *) update->buf; |
3790 | ||
4d7b1503 DW |
3791 | /* update requires a larger buf but the allocation failed */ |
3792 | if (super->next_len && !super->next_buf) { | |
3793 | super->next_len = 0; | |
3794 | return; | |
3795 | } | |
3796 | ||
3797 | if (super->next_buf) { | |
3798 | memcpy(super->next_buf, super->buf, super->len); | |
3799 | free(super->buf); | |
3800 | super->len = super->next_len; | |
3801 | super->buf = super->next_buf; | |
3802 | ||
3803 | super->next_len = 0; | |
3804 | super->next_buf = NULL; | |
3805 | } | |
3806 | ||
3807 | mpb = super->anchor; | |
3808 | ||
e8319a19 DW |
3809 | switch (type) { |
3810 | case update_activate_spare: { | |
3811 | struct imsm_update_activate_spare *u = (void *) update->buf; | |
949c47a0 | 3812 | struct imsm_dev *dev = get_imsm_dev(super, u->array); |
a965f303 | 3813 | struct imsm_map *map = get_imsm_map(dev, 0); |
0c046afd | 3814 | struct imsm_map *migr_map; |
e8319a19 DW |
3815 | struct active_array *a; |
3816 | struct imsm_disk *disk; | |
0c046afd | 3817 | __u8 to_state; |
e8319a19 | 3818 | struct dl *dl; |
e8319a19 | 3819 | unsigned int found; |
0c046afd DW |
3820 | int failed; |
3821 | int victim = get_imsm_disk_idx(dev, u->slot); | |
e8319a19 DW |
3822 | int i; |
3823 | ||
3824 | for (dl = super->disks; dl; dl = dl->next) | |
d23fe947 | 3825 | if (dl == u->dl) |
e8319a19 DW |
3826 | break; |
3827 | ||
3828 | if (!dl) { | |
3829 | fprintf(stderr, "error: imsm_activate_spare passed " | |
1f24f035 DW |
3830 | "an unknown disk (index: %d)\n", |
3831 | u->dl->index); | |
e8319a19 DW |
3832 | return; |
3833 | } | |
3834 | ||
3835 | super->updates_pending++; | |
3836 | ||
0c046afd DW |
3837 | /* count failures (excluding rebuilds and the victim) |
3838 | * to determine map[0] state | |
3839 | */ | |
3840 | failed = 0; | |
3841 | for (i = 0; i < map->num_members; i++) { | |
3842 | if (i == u->slot) | |
3843 | continue; | |
3844 | disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i)); | |
f2f27e63 | 3845 | if (!disk || disk->status & FAILED_DISK) |
0c046afd DW |
3846 | failed++; |
3847 | } | |
3848 | ||
d23fe947 DW |
3849 | /* adding a pristine spare, assign a new index */ |
3850 | if (dl->index < 0) { | |
3851 | dl->index = super->anchor->num_disks; | |
3852 | super->anchor->num_disks++; | |
3853 | } | |
d23fe947 | 3854 | disk = &dl->disk; |
f2f27e63 DW |
3855 | disk->status |= CONFIGURED_DISK; |
3856 | disk->status &= ~SPARE_DISK; | |
e8319a19 | 3857 | |
0c046afd DW |
3858 | /* mark rebuild */ |
3859 | to_state = imsm_check_degraded(super, dev, failed); | |
3860 | map->map_state = IMSM_T_STATE_DEGRADED; | |
e3bba0e0 | 3861 | migrate(dev, to_state, MIGR_REBUILD); |
0c046afd DW |
3862 | migr_map = get_imsm_map(dev, 1); |
3863 | set_imsm_ord_tbl_ent(map, u->slot, dl->index); | |
3864 | set_imsm_ord_tbl_ent(migr_map, u->slot, dl->index | IMSM_ORD_REBUILD); | |
3865 | ||
e8319a19 DW |
3866 | /* count arrays using the victim in the metadata */ |
3867 | found = 0; | |
3868 | for (a = st->arrays; a ; a = a->next) { | |
949c47a0 | 3869 | dev = get_imsm_dev(super, a->info.container_member); |
e8319a19 | 3870 | for (i = 0; i < map->num_members; i++) |
ff077194 | 3871 | if (victim == get_imsm_disk_idx(dev, i)) |
e8319a19 DW |
3872 | found++; |
3873 | } | |
3874 | ||
24565c9a | 3875 | /* delete the victim if it is no longer being |
e8319a19 DW |
3876 | * utilized anywhere |
3877 | */ | |
e8319a19 | 3878 | if (!found) { |
ae6aad82 | 3879 | struct dl **dlp; |
24565c9a | 3880 | |
47ee5a45 DW |
3881 | /* We know that 'manager' isn't touching anything, |
3882 | * so it is safe to delete | |
3883 | */ | |
24565c9a | 3884 | for (dlp = &super->disks; *dlp; dlp = &(*dlp)->next) |
ae6aad82 DW |
3885 | if ((*dlp)->index == victim) |
3886 | break; | |
47ee5a45 DW |
3887 | |
3888 | /* victim may be on the missing list */ | |
3889 | if (!*dlp) | |
3890 | for (dlp = &super->missing; *dlp; dlp = &(*dlp)->next) | |
3891 | if ((*dlp)->index == victim) | |
3892 | break; | |
24565c9a | 3893 | imsm_delete(super, dlp, victim); |
e8319a19 | 3894 | } |
8273f55e DW |
3895 | break; |
3896 | } | |
3897 | case update_create_array: { | |
3898 | /* someone wants to create a new array, we need to be aware of | |
3899 | * a few races/collisions: | |
3900 | * 1/ 'Create' called by two separate instances of mdadm | |
3901 | * 2/ 'Create' versus 'activate_spare': mdadm has chosen | |
3902 | * devices that have since been assimilated via | |
3903 | * activate_spare. | |
3904 | * In the event this update can not be carried out mdadm will | |
3905 | * (FIX ME) notice that its update did not take hold. | |
3906 | */ | |
3907 | struct imsm_update_create_array *u = (void *) update->buf; | |
ba2de7ba | 3908 | struct intel_dev *dv; |
8273f55e DW |
3909 | struct imsm_dev *dev; |
3910 | struct imsm_map *map, *new_map; | |
3911 | unsigned long long start, end; | |
3912 | unsigned long long new_start, new_end; | |
3913 | int i; | |
54c2c1ea DW |
3914 | struct disk_info *inf; |
3915 | struct dl *dl; | |
8273f55e DW |
3916 | |
3917 | /* handle racing creates: first come first serve */ | |
3918 | if (u->dev_idx < mpb->num_raid_devs) { | |
3919 | dprintf("%s: subarray %d already defined\n", | |
3920 | __func__, u->dev_idx); | |
ba2de7ba | 3921 | goto create_error; |
8273f55e DW |
3922 | } |
3923 | ||
3924 | /* check update is next in sequence */ | |
3925 | if (u->dev_idx != mpb->num_raid_devs) { | |
6a3e913e DW |
3926 | dprintf("%s: can not create array %d expected index %d\n", |
3927 | __func__, u->dev_idx, mpb->num_raid_devs); | |
ba2de7ba | 3928 | goto create_error; |
8273f55e DW |
3929 | } |
3930 | ||
a965f303 | 3931 | new_map = get_imsm_map(&u->dev, 0); |
8273f55e DW |
3932 | new_start = __le32_to_cpu(new_map->pba_of_lba0); |
3933 | new_end = new_start + __le32_to_cpu(new_map->blocks_per_member); | |
54c2c1ea | 3934 | inf = get_disk_info(u); |
8273f55e DW |
3935 | |
3936 | /* handle activate_spare versus create race: | |
3937 | * check to make sure that overlapping arrays do not include | |
3938 | * overalpping disks | |
3939 | */ | |
3940 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
949c47a0 | 3941 | dev = get_imsm_dev(super, i); |
a965f303 | 3942 | map = get_imsm_map(dev, 0); |
8273f55e DW |
3943 | start = __le32_to_cpu(map->pba_of_lba0); |
3944 | end = start + __le32_to_cpu(map->blocks_per_member); | |
3945 | if ((new_start >= start && new_start <= end) || | |
3946 | (start >= new_start && start <= new_end)) | |
54c2c1ea DW |
3947 | /* overlap */; |
3948 | else | |
3949 | continue; | |
3950 | ||
3951 | if (disks_overlap(super, i, u)) { | |
8273f55e | 3952 | dprintf("%s: arrays overlap\n", __func__); |
ba2de7ba | 3953 | goto create_error; |
8273f55e DW |
3954 | } |
3955 | } | |
8273f55e | 3956 | |
949c47a0 DW |
3957 | /* check that prepare update was successful */ |
3958 | if (!update->space) { | |
3959 | dprintf("%s: prepare update failed\n", __func__); | |
ba2de7ba | 3960 | goto create_error; |
949c47a0 DW |
3961 | } |
3962 | ||
54c2c1ea DW |
3963 | /* check that all disks are still active before committing |
3964 | * changes. FIXME: could we instead handle this by creating a | |
3965 | * degraded array? That's probably not what the user expects, | |
3966 | * so better to drop this update on the floor. | |
3967 | */ | |
3968 | for (i = 0; i < new_map->num_members; i++) { | |
3969 | dl = serial_to_dl(inf[i].serial, super); | |
3970 | if (!dl) { | |
3971 | dprintf("%s: disk disappeared\n", __func__); | |
ba2de7ba | 3972 | goto create_error; |
54c2c1ea | 3973 | } |
949c47a0 DW |
3974 | } |
3975 | ||
8273f55e | 3976 | super->updates_pending++; |
54c2c1ea DW |
3977 | |
3978 | /* convert spares to members and fixup ord_tbl */ | |
3979 | for (i = 0; i < new_map->num_members; i++) { | |
3980 | dl = serial_to_dl(inf[i].serial, super); | |
3981 | if (dl->index == -1) { | |
3982 | dl->index = mpb->num_disks; | |
3983 | mpb->num_disks++; | |
3984 | dl->disk.status |= CONFIGURED_DISK; | |
3985 | dl->disk.status &= ~SPARE_DISK; | |
3986 | } | |
3987 | set_imsm_ord_tbl_ent(new_map, i, dl->index); | |
3988 | } | |
3989 | ||
ba2de7ba DW |
3990 | dv = update->space; |
3991 | dev = dv->dev; | |
949c47a0 DW |
3992 | update->space = NULL; |
3993 | imsm_copy_dev(dev, &u->dev); | |
ba2de7ba DW |
3994 | dv->index = u->dev_idx; |
3995 | dv->next = super->devlist; | |
3996 | super->devlist = dv; | |
8273f55e | 3997 | mpb->num_raid_devs++; |
8273f55e | 3998 | |
4d1313e9 | 3999 | imsm_update_version_info(super); |
8273f55e | 4000 | break; |
ba2de7ba DW |
4001 | create_error: |
4002 | /* mdmon knows how to release update->space, but not | |
4003 | * ((struct intel_dev *) update->space)->dev | |
4004 | */ | |
4005 | if (update->space) { | |
4006 | dv = update->space; | |
4007 | free(dv->dev); | |
4008 | } | |
8273f55e | 4009 | break; |
e8319a19 | 4010 | } |
43dad3d6 DW |
4011 | case update_add_disk: |
4012 | ||
4013 | /* we may be able to repair some arrays if disks are | |
4014 | * being added */ | |
4015 | if (super->add) { | |
4016 | struct active_array *a; | |
072b727f DW |
4017 | |
4018 | super->updates_pending++; | |
43dad3d6 DW |
4019 | for (a = st->arrays; a; a = a->next) |
4020 | a->check_degraded = 1; | |
4021 | } | |
e553d2a4 | 4022 | /* add some spares to the metadata */ |
43dad3d6 | 4023 | while (super->add) { |
e553d2a4 DW |
4024 | struct dl *al; |
4025 | ||
43dad3d6 DW |
4026 | al = super->add; |
4027 | super->add = al->next; | |
43dad3d6 DW |
4028 | al->next = super->disks; |
4029 | super->disks = al; | |
e553d2a4 DW |
4030 | dprintf("%s: added %x:%x\n", |
4031 | __func__, al->major, al->minor); | |
43dad3d6 DW |
4032 | } |
4033 | ||
4034 | break; | |
e8319a19 DW |
4035 | } |
4036 | } | |
88758e9d | 4037 | |
8273f55e DW |
4038 | static void imsm_prepare_update(struct supertype *st, |
4039 | struct metadata_update *update) | |
4040 | { | |
949c47a0 | 4041 | /** |
4d7b1503 DW |
4042 | * Allocate space to hold new disk entries, raid-device entries or a new |
4043 | * mpb if necessary. The manager synchronously waits for updates to | |
4044 | * complete in the monitor, so new mpb buffers allocated here can be | |
4045 | * integrated by the monitor thread without worrying about live pointers | |
4046 | * in the manager thread. | |
8273f55e | 4047 | */ |
949c47a0 | 4048 | enum imsm_update_type type = *(enum imsm_update_type *) update->buf; |
4d7b1503 DW |
4049 | struct intel_super *super = st->sb; |
4050 | struct imsm_super *mpb = super->anchor; | |
4051 | size_t buf_len; | |
4052 | size_t len = 0; | |
949c47a0 DW |
4053 | |
4054 | switch (type) { | |
4055 | case update_create_array: { | |
4056 | struct imsm_update_create_array *u = (void *) update->buf; | |
ba2de7ba | 4057 | struct intel_dev *dv; |
54c2c1ea DW |
4058 | struct imsm_dev *dev = &u->dev; |
4059 | struct imsm_map *map = get_imsm_map(dev, 0); | |
4060 | struct dl *dl; | |
4061 | struct disk_info *inf; | |
4062 | int i; | |
4063 | int activate = 0; | |
949c47a0 | 4064 | |
54c2c1ea DW |
4065 | inf = get_disk_info(u); |
4066 | len = sizeof_imsm_dev(dev, 1); | |
ba2de7ba DW |
4067 | /* allocate a new super->devlist entry */ |
4068 | dv = malloc(sizeof(*dv)); | |
4069 | if (dv) { | |
4070 | dv->dev = malloc(len); | |
4071 | if (dv->dev) | |
4072 | update->space = dv; | |
4073 | else { | |
4074 | free(dv); | |
4075 | update->space = NULL; | |
4076 | } | |
4077 | } | |
949c47a0 | 4078 | |
54c2c1ea DW |
4079 | /* count how many spares will be converted to members */ |
4080 | for (i = 0; i < map->num_members; i++) { | |
4081 | dl = serial_to_dl(inf[i].serial, super); | |
4082 | if (!dl) { | |
4083 | /* hmm maybe it failed?, nothing we can do about | |
4084 | * it here | |
4085 | */ | |
4086 | continue; | |
4087 | } | |
4088 | if (count_memberships(dl, super) == 0) | |
4089 | activate++; | |
4090 | } | |
4091 | len += activate * sizeof(struct imsm_disk); | |
949c47a0 DW |
4092 | break; |
4093 | default: | |
4094 | break; | |
4095 | } | |
4096 | } | |
8273f55e | 4097 | |
4d7b1503 DW |
4098 | /* check if we need a larger metadata buffer */ |
4099 | if (super->next_buf) | |
4100 | buf_len = super->next_len; | |
4101 | else | |
4102 | buf_len = super->len; | |
4103 | ||
4104 | if (__le32_to_cpu(mpb->mpb_size) + len > buf_len) { | |
4105 | /* ok we need a larger buf than what is currently allocated | |
4106 | * if this allocation fails process_update will notice that | |
4107 | * ->next_len is set and ->next_buf is NULL | |
4108 | */ | |
4109 | buf_len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + len, 512); | |
4110 | if (super->next_buf) | |
4111 | free(super->next_buf); | |
4112 | ||
4113 | super->next_len = buf_len; | |
c8151cbc | 4114 | if (posix_memalign(&super->next_buf, 512, buf_len) != 0) |
4d7b1503 DW |
4115 | super->next_buf = NULL; |
4116 | } | |
8273f55e DW |
4117 | } |
4118 | ||
ae6aad82 | 4119 | /* must be called while manager is quiesced */ |
24565c9a | 4120 | static void imsm_delete(struct intel_super *super, struct dl **dlp, int index) |
ae6aad82 DW |
4121 | { |
4122 | struct imsm_super *mpb = super->anchor; | |
ae6aad82 DW |
4123 | struct dl *iter; |
4124 | struct imsm_dev *dev; | |
4125 | struct imsm_map *map; | |
24565c9a DW |
4126 | int i, j, num_members; |
4127 | __u32 ord; | |
ae6aad82 | 4128 | |
24565c9a DW |
4129 | dprintf("%s: deleting device[%d] from imsm_super\n", |
4130 | __func__, index); | |
ae6aad82 DW |
4131 | |
4132 | /* shift all indexes down one */ | |
4133 | for (iter = super->disks; iter; iter = iter->next) | |
24565c9a | 4134 | if (iter->index > index) |
ae6aad82 | 4135 | iter->index--; |
47ee5a45 DW |
4136 | for (iter = super->missing; iter; iter = iter->next) |
4137 | if (iter->index > index) | |
4138 | iter->index--; | |
ae6aad82 DW |
4139 | |
4140 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
4141 | dev = get_imsm_dev(super, i); | |
4142 | map = get_imsm_map(dev, 0); | |
24565c9a DW |
4143 | num_members = map->num_members; |
4144 | for (j = 0; j < num_members; j++) { | |
4145 | /* update ord entries being careful not to propagate | |
4146 | * ord-flags to the first map | |
4147 | */ | |
4148 | ord = get_imsm_ord_tbl_ent(dev, j); | |
ae6aad82 | 4149 | |
24565c9a DW |
4150 | if (ord_to_idx(ord) <= index) |
4151 | continue; | |
ae6aad82 | 4152 | |
24565c9a DW |
4153 | map = get_imsm_map(dev, 0); |
4154 | set_imsm_ord_tbl_ent(map, j, ord_to_idx(ord - 1)); | |
4155 | map = get_imsm_map(dev, 1); | |
4156 | if (map) | |
4157 | set_imsm_ord_tbl_ent(map, j, ord - 1); | |
ae6aad82 DW |
4158 | } |
4159 | } | |
4160 | ||
4161 | mpb->num_disks--; | |
4162 | super->updates_pending++; | |
24565c9a DW |
4163 | if (*dlp) { |
4164 | struct dl *dl = *dlp; | |
4165 | ||
4166 | *dlp = (*dlp)->next; | |
4167 | __free_imsm_disk(dl); | |
4168 | } | |
ae6aad82 | 4169 | } |
0e600426 | 4170 | #endif /* MDASSEMBLE */ |
ae6aad82 | 4171 | |
cdddbdbc DW |
4172 | struct superswitch super_imsm = { |
4173 | #ifndef MDASSEMBLE | |
4174 | .examine_super = examine_super_imsm, | |
4175 | .brief_examine_super = brief_examine_super_imsm, | |
4176 | .detail_super = detail_super_imsm, | |
4177 | .brief_detail_super = brief_detail_super_imsm, | |
bf5a934a | 4178 | .write_init_super = write_init_super_imsm, |
0e600426 N |
4179 | .validate_geometry = validate_geometry_imsm, |
4180 | .add_to_super = add_to_super_imsm, | |
d665cc31 | 4181 | .detail_platform = detail_platform_imsm, |
cdddbdbc DW |
4182 | #endif |
4183 | .match_home = match_home_imsm, | |
4184 | .uuid_from_super= uuid_from_super_imsm, | |
4185 | .getinfo_super = getinfo_super_imsm, | |
4186 | .update_super = update_super_imsm, | |
4187 | ||
4188 | .avail_size = avail_size_imsm, | |
4189 | ||
4190 | .compare_super = compare_super_imsm, | |
4191 | ||
4192 | .load_super = load_super_imsm, | |
bf5a934a | 4193 | .init_super = init_super_imsm, |
cdddbdbc DW |
4194 | .store_super = store_zero_imsm, |
4195 | .free_super = free_super_imsm, | |
4196 | .match_metadata_desc = match_metadata_desc_imsm, | |
bf5a934a | 4197 | .container_content = container_content_imsm, |
a18a888e | 4198 | .default_layout = imsm_level_to_layout, |
cdddbdbc | 4199 | |
cdddbdbc | 4200 | .external = 1, |
4cce4069 | 4201 | .name = "imsm", |
845dea95 | 4202 | |
0e600426 | 4203 | #ifndef MDASSEMBLE |
845dea95 NB |
4204 | /* for mdmon */ |
4205 | .open_new = imsm_open_new, | |
4206 | .load_super = load_super_imsm, | |
ed9d66aa | 4207 | .set_array_state= imsm_set_array_state, |
845dea95 NB |
4208 | .set_disk = imsm_set_disk, |
4209 | .sync_metadata = imsm_sync_metadata, | |
88758e9d | 4210 | .activate_spare = imsm_activate_spare, |
e8319a19 | 4211 | .process_update = imsm_process_update, |
8273f55e | 4212 | .prepare_update = imsm_prepare_update, |
0e600426 | 4213 | #endif /* MDASSEMBLE */ |
cdddbdbc | 4214 | }; |