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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 | ||
620b1713 DW |
453 | static int get_imsm_disk_slot(struct imsm_map *map, int idx) |
454 | { | |
455 | int slot; | |
456 | __u32 ord; | |
457 | ||
458 | for (slot = 0; slot < map->num_members; slot++) { | |
459 | ord = __le32_to_cpu(map->disk_ord_tbl[slot]); | |
460 | if (ord_to_idx(ord) == idx) | |
461 | return slot; | |
462 | } | |
463 | ||
464 | return -1; | |
465 | } | |
466 | ||
cdddbdbc DW |
467 | static int get_imsm_raid_level(struct imsm_map *map) |
468 | { | |
469 | if (map->raid_level == 1) { | |
470 | if (map->num_members == 2) | |
471 | return 1; | |
472 | else | |
473 | return 10; | |
474 | } | |
475 | ||
476 | return map->raid_level; | |
477 | } | |
478 | ||
c2c087e6 DW |
479 | static int cmp_extent(const void *av, const void *bv) |
480 | { | |
481 | const struct extent *a = av; | |
482 | const struct extent *b = bv; | |
483 | if (a->start < b->start) | |
484 | return -1; | |
485 | if (a->start > b->start) | |
486 | return 1; | |
487 | return 0; | |
488 | } | |
489 | ||
0dcecb2e | 490 | static int count_memberships(struct dl *dl, struct intel_super *super) |
c2c087e6 | 491 | { |
c2c087e6 | 492 | int memberships = 0; |
620b1713 | 493 | int i; |
c2c087e6 | 494 | |
949c47a0 DW |
495 | for (i = 0; i < super->anchor->num_raid_devs; i++) { |
496 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
a965f303 | 497 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2c087e6 | 498 | |
620b1713 DW |
499 | if (get_imsm_disk_slot(map, dl->index) >= 0) |
500 | memberships++; | |
c2c087e6 | 501 | } |
0dcecb2e DW |
502 | |
503 | return memberships; | |
504 | } | |
505 | ||
506 | static struct extent *get_extents(struct intel_super *super, struct dl *dl) | |
507 | { | |
508 | /* find a list of used extents on the given physical device */ | |
509 | struct extent *rv, *e; | |
620b1713 | 510 | int i; |
0dcecb2e DW |
511 | int memberships = count_memberships(dl, super); |
512 | __u32 reservation = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
513 | ||
c2c087e6 DW |
514 | rv = malloc(sizeof(struct extent) * (memberships + 1)); |
515 | if (!rv) | |
516 | return NULL; | |
517 | e = rv; | |
518 | ||
949c47a0 DW |
519 | for (i = 0; i < super->anchor->num_raid_devs; i++) { |
520 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
a965f303 | 521 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2c087e6 | 522 | |
620b1713 DW |
523 | if (get_imsm_disk_slot(map, dl->index) >= 0) { |
524 | e->start = __le32_to_cpu(map->pba_of_lba0); | |
525 | e->size = __le32_to_cpu(map->blocks_per_member); | |
526 | e++; | |
c2c087e6 DW |
527 | } |
528 | } | |
529 | qsort(rv, memberships, sizeof(*rv), cmp_extent); | |
530 | ||
14e8215b DW |
531 | /* determine the start of the metadata |
532 | * when no raid devices are defined use the default | |
533 | * ...otherwise allow the metadata to truncate the value | |
534 | * as is the case with older versions of imsm | |
535 | */ | |
536 | if (memberships) { | |
537 | struct extent *last = &rv[memberships - 1]; | |
538 | __u32 remainder; | |
539 | ||
540 | remainder = __le32_to_cpu(dl->disk.total_blocks) - | |
541 | (last->start + last->size); | |
dda5855f DW |
542 | /* round down to 1k block to satisfy precision of the kernel |
543 | * 'size' interface | |
544 | */ | |
545 | remainder &= ~1UL; | |
546 | /* make sure remainder is still sane */ | |
547 | if (remainder < ROUND_UP(super->len, 512) >> 9) | |
548 | remainder = ROUND_UP(super->len, 512) >> 9; | |
14e8215b DW |
549 | if (reservation > remainder) |
550 | reservation = remainder; | |
551 | } | |
552 | e->start = __le32_to_cpu(dl->disk.total_blocks) - reservation; | |
c2c087e6 DW |
553 | e->size = 0; |
554 | return rv; | |
555 | } | |
556 | ||
14e8215b DW |
557 | /* try to determine how much space is reserved for metadata from |
558 | * the last get_extents() entry, otherwise fallback to the | |
559 | * default | |
560 | */ | |
561 | static __u32 imsm_reserved_sectors(struct intel_super *super, struct dl *dl) | |
562 | { | |
563 | struct extent *e; | |
564 | int i; | |
565 | __u32 rv; | |
566 | ||
567 | /* for spares just return a minimal reservation which will grow | |
568 | * once the spare is picked up by an array | |
569 | */ | |
570 | if (dl->index == -1) | |
571 | return MPB_SECTOR_CNT; | |
572 | ||
573 | e = get_extents(super, dl); | |
574 | if (!e) | |
575 | return MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
576 | ||
577 | /* scroll to last entry */ | |
578 | for (i = 0; e[i].size; i++) | |
579 | continue; | |
580 | ||
581 | rv = __le32_to_cpu(dl->disk.total_blocks) - e[i].start; | |
582 | ||
583 | free(e); | |
584 | ||
585 | return rv; | |
586 | } | |
587 | ||
588 | #ifndef MDASSEMBLE | |
44470971 | 589 | static void print_imsm_dev(struct imsm_dev *dev, char *uuid, int disk_idx) |
cdddbdbc DW |
590 | { |
591 | __u64 sz; | |
592 | int slot; | |
a965f303 | 593 | struct imsm_map *map = get_imsm_map(dev, 0); |
b10b37b8 | 594 | __u32 ord; |
cdddbdbc DW |
595 | |
596 | printf("\n"); | |
1e7bc0ed | 597 | printf("[%.16s]:\n", dev->volume); |
44470971 | 598 | printf(" UUID : %s\n", uuid); |
cdddbdbc DW |
599 | printf(" RAID Level : %d\n", get_imsm_raid_level(map)); |
600 | printf(" Members : %d\n", map->num_members); | |
620b1713 DW |
601 | slot = get_imsm_disk_slot(map, disk_idx); |
602 | if (slot >= 0) { | |
b10b37b8 DW |
603 | ord = get_imsm_ord_tbl_ent(dev, slot); |
604 | printf(" This Slot : %d%s\n", slot, | |
605 | ord & IMSM_ORD_REBUILD ? " (out-of-sync)" : ""); | |
606 | } else | |
cdddbdbc DW |
607 | printf(" This Slot : ?\n"); |
608 | sz = __le32_to_cpu(dev->size_high); | |
609 | sz <<= 32; | |
610 | sz += __le32_to_cpu(dev->size_low); | |
611 | printf(" Array Size : %llu%s\n", (unsigned long long)sz, | |
612 | human_size(sz * 512)); | |
613 | sz = __le32_to_cpu(map->blocks_per_member); | |
614 | printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz, | |
615 | human_size(sz * 512)); | |
616 | printf(" Sector Offset : %u\n", | |
617 | __le32_to_cpu(map->pba_of_lba0)); | |
618 | printf(" Num Stripes : %u\n", | |
619 | __le32_to_cpu(map->num_data_stripes)); | |
620 | printf(" Chunk Size : %u KiB\n", | |
621 | __le16_to_cpu(map->blocks_per_strip) / 2); | |
622 | printf(" Reserved : %d\n", __le32_to_cpu(dev->reserved_blocks)); | |
3393c6af DW |
623 | printf(" Migrate State : %s", dev->vol.migr_state ? "migrating" : "idle"); |
624 | if (dev->vol.migr_state) | |
625 | printf(": %s", dev->vol.migr_type ? "rebuilding" : "initializing"); | |
626 | printf("\n"); | |
627 | printf(" Map State : %s", map_state_str[map->map_state]); | |
628 | if (dev->vol.migr_state) { | |
629 | struct imsm_map *map = get_imsm_map(dev, 1); | |
b10b37b8 | 630 | printf(" <-- %s", map_state_str[map->map_state]); |
3393c6af DW |
631 | } |
632 | printf("\n"); | |
cdddbdbc | 633 | printf(" Dirty State : %s\n", dev->vol.dirty ? "dirty" : "clean"); |
cdddbdbc DW |
634 | } |
635 | ||
14e8215b | 636 | static void print_imsm_disk(struct imsm_super *mpb, int index, __u32 reserved) |
cdddbdbc | 637 | { |
949c47a0 | 638 | struct imsm_disk *disk = __get_imsm_disk(mpb, index); |
1f24f035 | 639 | char str[MAX_RAID_SERIAL_LEN + 1]; |
cdddbdbc DW |
640 | __u32 s; |
641 | __u64 sz; | |
642 | ||
e9d82038 DW |
643 | if (index < 0) |
644 | return; | |
645 | ||
cdddbdbc | 646 | printf("\n"); |
1f24f035 | 647 | snprintf(str, MAX_RAID_SERIAL_LEN + 1, "%s", disk->serial); |
cdddbdbc | 648 | printf(" Disk%02d Serial : %s\n", index, str); |
f2f27e63 | 649 | s = disk->status; |
cdddbdbc DW |
650 | printf(" State :%s%s%s%s\n", s&SPARE_DISK ? " spare" : "", |
651 | s&CONFIGURED_DISK ? " active" : "", | |
652 | s&FAILED_DISK ? " failed" : "", | |
653 | s&USABLE_DISK ? " usable" : ""); | |
654 | printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id)); | |
14e8215b | 655 | sz = __le32_to_cpu(disk->total_blocks) - reserved; |
cdddbdbc DW |
656 | printf(" Usable Size : %llu%s\n", (unsigned long long)sz, |
657 | human_size(sz * 512)); | |
658 | } | |
659 | ||
44470971 DW |
660 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info); |
661 | ||
cdddbdbc DW |
662 | static void examine_super_imsm(struct supertype *st, char *homehost) |
663 | { | |
664 | struct intel_super *super = st->sb; | |
949c47a0 | 665 | struct imsm_super *mpb = super->anchor; |
cdddbdbc DW |
666 | char str[MAX_SIGNATURE_LENGTH]; |
667 | int i; | |
27fd6274 DW |
668 | struct mdinfo info; |
669 | char nbuf[64]; | |
cdddbdbc | 670 | __u32 sum; |
14e8215b | 671 | __u32 reserved = imsm_reserved_sectors(super, super->disks); |
cdddbdbc | 672 | |
27fd6274 | 673 | |
cdddbdbc DW |
674 | snprintf(str, MPB_SIG_LEN, "%s", mpb->sig); |
675 | printf(" Magic : %s\n", str); | |
676 | snprintf(str, strlen(MPB_VERSION_RAID0), "%s", get_imsm_version(mpb)); | |
677 | printf(" Version : %s\n", get_imsm_version(mpb)); | |
678 | printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num)); | |
679 | printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num)); | |
27fd6274 DW |
680 | getinfo_super_imsm(st, &info); |
681 | fname_from_uuid(st, &info, nbuf,'-'); | |
682 | printf(" UUID : %s\n", nbuf + 5); | |
cdddbdbc DW |
683 | sum = __le32_to_cpu(mpb->check_sum); |
684 | printf(" Checksum : %08x %s\n", sum, | |
949c47a0 | 685 | __gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect"); |
87eb16df | 686 | printf(" MPB Sectors : %d\n", mpb_sectors(mpb)); |
cdddbdbc DW |
687 | printf(" Disks : %d\n", mpb->num_disks); |
688 | printf(" RAID Devices : %d\n", mpb->num_raid_devs); | |
14e8215b | 689 | print_imsm_disk(mpb, super->disks->index, reserved); |
604b746f JD |
690 | if (super->bbm_log) { |
691 | struct bbm_log *log = super->bbm_log; | |
692 | ||
693 | printf("\n"); | |
694 | printf("Bad Block Management Log:\n"); | |
695 | printf(" Log Size : %d\n", __le32_to_cpu(mpb->bbm_log_size)); | |
696 | printf(" Signature : %x\n", __le32_to_cpu(log->signature)); | |
697 | printf(" Entry Count : %d\n", __le32_to_cpu(log->entry_count)); | |
698 | printf(" Spare Blocks : %d\n", __le32_to_cpu(log->reserved_spare_block_count)); | |
699 | printf(" First Spare : %llx\n", __le64_to_cpu(log->first_spare_lba)); | |
700 | } | |
44470971 DW |
701 | for (i = 0; i < mpb->num_raid_devs; i++) { |
702 | struct mdinfo info; | |
703 | struct imsm_dev *dev = __get_imsm_dev(mpb, i); | |
704 | ||
705 | super->current_vol = i; | |
706 | getinfo_super_imsm(st, &info); | |
707 | fname_from_uuid(st, &info, nbuf, '-'); | |
708 | print_imsm_dev(dev, nbuf + 5, super->disks->index); | |
709 | } | |
cdddbdbc DW |
710 | for (i = 0; i < mpb->num_disks; i++) { |
711 | if (i == super->disks->index) | |
712 | continue; | |
14e8215b | 713 | print_imsm_disk(mpb, i, reserved); |
cdddbdbc DW |
714 | } |
715 | } | |
716 | ||
717 | static void brief_examine_super_imsm(struct supertype *st) | |
718 | { | |
27fd6274 | 719 | /* We just write a generic IMSM ARRAY entry */ |
ff54de6e N |
720 | struct mdinfo info; |
721 | char nbuf[64]; | |
cf8de691 | 722 | char nbuf1[64]; |
1e7bc0ed DW |
723 | struct intel_super *super = st->sb; |
724 | int i; | |
725 | ||
726 | if (!super->anchor->num_raid_devs) | |
727 | return; | |
ff54de6e N |
728 | |
729 | getinfo_super_imsm(st, &info); | |
730 | fname_from_uuid(st, &info, nbuf,'-'); | |
cf8de691 | 731 | printf("ARRAY metadata=imsm auto=md UUID=%s\n", nbuf + 5); |
1e7bc0ed DW |
732 | for (i = 0; i < super->anchor->num_raid_devs; i++) { |
733 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
734 | ||
735 | super->current_vol = i; | |
736 | getinfo_super_imsm(st, &info); | |
cf8de691 | 737 | fname_from_uuid(st, &info, nbuf1,'-'); |
44470971 DW |
738 | printf("ARRAY /dev/md/%.16s container=%s\n" |
739 | " member=%d auto=mdp UUID=%s\n", | |
cf8de691 | 740 | dev->volume, nbuf + 5, i, nbuf1 + 5); |
1e7bc0ed | 741 | } |
cdddbdbc DW |
742 | } |
743 | ||
744 | static void detail_super_imsm(struct supertype *st, char *homehost) | |
745 | { | |
3ebe00a1 DW |
746 | struct mdinfo info; |
747 | char nbuf[64]; | |
748 | ||
749 | getinfo_super_imsm(st, &info); | |
750 | fname_from_uuid(st, &info, nbuf,'-'); | |
751 | printf("\n UUID : %s\n", nbuf + 5); | |
cdddbdbc DW |
752 | } |
753 | ||
754 | static void brief_detail_super_imsm(struct supertype *st) | |
755 | { | |
ff54de6e N |
756 | struct mdinfo info; |
757 | char nbuf[64]; | |
758 | getinfo_super_imsm(st, &info); | |
759 | fname_from_uuid(st, &info, nbuf,'-'); | |
760 | printf(" UUID=%s", nbuf + 5); | |
cdddbdbc | 761 | } |
d665cc31 DW |
762 | |
763 | static int imsm_read_serial(int fd, char *devname, __u8 *serial); | |
764 | static void fd2devname(int fd, char *name); | |
765 | ||
766 | static int imsm_enumerate_ports(const char *hba_path, int port_count, int host_base, int verbose) | |
767 | { | |
768 | /* dump an unsorted list of devices attached to ahci, as well as | |
769 | * non-connected ports | |
770 | */ | |
771 | int hba_len = strlen(hba_path) + 1; | |
772 | struct dirent *ent; | |
773 | DIR *dir; | |
774 | char *path = NULL; | |
775 | int err = 0; | |
776 | unsigned long port_mask = (1 << port_count) - 1; | |
777 | ||
778 | if (port_count > sizeof(port_mask) * 8) { | |
779 | if (verbose) | |
780 | fprintf(stderr, Name ": port_count %d out of range\n", port_count); | |
781 | return 2; | |
782 | } | |
783 | ||
784 | /* scroll through /sys/dev/block looking for devices attached to | |
785 | * this hba | |
786 | */ | |
787 | dir = opendir("/sys/dev/block"); | |
788 | for (ent = dir ? readdir(dir) : NULL; ent; ent = readdir(dir)) { | |
789 | int fd; | |
790 | char model[64]; | |
791 | char vendor[64]; | |
792 | char buf[1024]; | |
793 | int major, minor; | |
794 | char *device; | |
795 | char *c; | |
796 | int port; | |
797 | int type; | |
798 | ||
799 | if (sscanf(ent->d_name, "%d:%d", &major, &minor) != 2) | |
800 | continue; | |
801 | path = devt_to_devpath(makedev(major, minor)); | |
802 | if (!path) | |
803 | continue; | |
804 | if (!path_attached_to_hba(path, hba_path)) { | |
805 | free(path); | |
806 | path = NULL; | |
807 | continue; | |
808 | } | |
809 | ||
810 | /* retrieve the scsi device type */ | |
811 | if (asprintf(&device, "/sys/dev/block/%d:%d/device/xxxxxxx", major, minor) < 0) { | |
812 | if (verbose) | |
813 | fprintf(stderr, Name ": failed to allocate 'device'\n"); | |
814 | err = 2; | |
815 | break; | |
816 | } | |
817 | sprintf(device, "/sys/dev/block/%d:%d/device/type", major, minor); | |
818 | if (load_sys(device, buf) != 0) { | |
819 | if (verbose) | |
820 | fprintf(stderr, Name ": failed to read device type for %s\n", | |
821 | path); | |
822 | err = 2; | |
823 | free(device); | |
824 | break; | |
825 | } | |
826 | type = strtoul(buf, NULL, 10); | |
827 | ||
828 | /* if it's not a disk print the vendor and model */ | |
829 | if (!(type == 0 || type == 7 || type == 14)) { | |
830 | vendor[0] = '\0'; | |
831 | model[0] = '\0'; | |
832 | sprintf(device, "/sys/dev/block/%d:%d/device/vendor", major, minor); | |
833 | if (load_sys(device, buf) == 0) { | |
834 | strncpy(vendor, buf, sizeof(vendor)); | |
835 | vendor[sizeof(vendor) - 1] = '\0'; | |
836 | c = (char *) &vendor[sizeof(vendor) - 1]; | |
837 | while (isspace(*c) || *c == '\0') | |
838 | *c-- = '\0'; | |
839 | ||
840 | } | |
841 | sprintf(device, "/sys/dev/block/%d:%d/device/model", major, minor); | |
842 | if (load_sys(device, buf) == 0) { | |
843 | strncpy(model, buf, sizeof(model)); | |
844 | model[sizeof(model) - 1] = '\0'; | |
845 | c = (char *) &model[sizeof(model) - 1]; | |
846 | while (isspace(*c) || *c == '\0') | |
847 | *c-- = '\0'; | |
848 | } | |
849 | ||
850 | if (vendor[0] && model[0]) | |
851 | sprintf(buf, "%.64s %.64s", vendor, model); | |
852 | else | |
853 | switch (type) { /* numbers from hald/linux/device.c */ | |
854 | case 1: sprintf(buf, "tape"); break; | |
855 | case 2: sprintf(buf, "printer"); break; | |
856 | case 3: sprintf(buf, "processor"); break; | |
857 | case 4: | |
858 | case 5: sprintf(buf, "cdrom"); break; | |
859 | case 6: sprintf(buf, "scanner"); break; | |
860 | case 8: sprintf(buf, "media_changer"); break; | |
861 | case 9: sprintf(buf, "comm"); break; | |
862 | case 12: sprintf(buf, "raid"); break; | |
863 | default: sprintf(buf, "unknown"); | |
864 | } | |
865 | } else | |
866 | buf[0] = '\0'; | |
867 | free(device); | |
868 | ||
869 | /* chop device path to 'host%d' and calculate the port number */ | |
870 | c = strchr(&path[hba_len], '/'); | |
871 | *c = '\0'; | |
872 | if (sscanf(&path[hba_len], "host%d", &port) == 1) | |
873 | port -= host_base; | |
874 | else { | |
875 | if (verbose) { | |
876 | *c = '/'; /* repair the full string */ | |
877 | fprintf(stderr, Name ": failed to determine port number for %s\n", | |
878 | path); | |
879 | } | |
880 | err = 2; | |
881 | break; | |
882 | } | |
883 | ||
884 | /* mark this port as used */ | |
885 | port_mask &= ~(1 << port); | |
886 | ||
887 | /* print out the device information */ | |
888 | if (buf[0]) { | |
889 | printf(" Port%d : - non-disk device (%s) -\n", port, buf); | |
890 | continue; | |
891 | } | |
892 | ||
893 | fd = dev_open(ent->d_name, O_RDONLY); | |
894 | if (fd < 0) | |
895 | printf(" Port%d : - disk info unavailable -\n", port); | |
896 | else { | |
897 | fd2devname(fd, buf); | |
898 | printf(" Port%d : %s", port, buf); | |
899 | if (imsm_read_serial(fd, NULL, (__u8 *) buf) == 0) | |
900 | printf(" (%s)\n", buf); | |
901 | else | |
902 | printf("()\n"); | |
903 | } | |
904 | close(fd); | |
905 | free(path); | |
906 | path = NULL; | |
907 | } | |
908 | if (path) | |
909 | free(path); | |
910 | if (dir) | |
911 | closedir(dir); | |
912 | if (err == 0) { | |
913 | int i; | |
914 | ||
915 | for (i = 0; i < port_count; i++) | |
916 | if (port_mask & (1 << i)) | |
917 | printf(" Port%d : - no device attached -\n", i); | |
918 | } | |
919 | ||
920 | return err; | |
921 | } | |
922 | ||
5615172f | 923 | static int detail_platform_imsm(int verbose, int enumerate_only) |
d665cc31 DW |
924 | { |
925 | /* There are two components to imsm platform support, the ahci SATA | |
926 | * controller and the option-rom. To find the SATA controller we | |
927 | * simply look in /sys/bus/pci/drivers/ahci to see if an ahci | |
928 | * controller with the Intel vendor id is present. This approach | |
929 | * allows mdadm to leverage the kernel's ahci detection logic, with the | |
930 | * caveat that if ahci.ko is not loaded mdadm will not be able to | |
931 | * detect platform raid capabilities. The option-rom resides in a | |
932 | * platform "Adapter ROM". We scan for its signature to retrieve the | |
933 | * platform capabilities. If raid support is disabled in the BIOS the | |
934 | * option-rom capability structure will not be available. | |
935 | */ | |
936 | const struct imsm_orom *orom; | |
937 | struct sys_dev *list, *hba; | |
938 | DIR *dir; | |
939 | struct dirent *ent; | |
940 | const char *hba_path; | |
941 | int host_base = 0; | |
942 | int port_count = 0; | |
943 | ||
5615172f DW |
944 | if (enumerate_only) { |
945 | if (check_env("IMSM_NO_PLATFORM") || find_imsm_orom()) | |
946 | return 0; | |
947 | return 2; | |
948 | } | |
949 | ||
d665cc31 DW |
950 | list = find_driver_devices("pci", "ahci"); |
951 | for (hba = list; hba; hba = hba->next) | |
952 | if (devpath_to_vendor(hba->path) == 0x8086) | |
953 | break; | |
954 | ||
955 | if (!hba) { | |
956 | if (verbose) | |
957 | fprintf(stderr, Name ": unable to find active ahci controller\n"); | |
958 | free_sys_dev(&list); | |
959 | return 2; | |
960 | } else if (verbose) | |
961 | fprintf(stderr, Name ": found Intel SATA AHCI Controller\n"); | |
962 | hba_path = hba->path; | |
963 | hba->path = NULL; | |
964 | free_sys_dev(&list); | |
965 | ||
966 | orom = find_imsm_orom(); | |
967 | if (!orom) { | |
968 | if (verbose) | |
969 | fprintf(stderr, Name ": imsm option-rom not found\n"); | |
970 | return 2; | |
971 | } | |
972 | ||
973 | printf(" Platform : Intel(R) Matrix Storage Manager\n"); | |
974 | printf(" Version : %d.%d.%d.%d\n", orom->major_ver, orom->minor_ver, | |
975 | orom->hotfix_ver, orom->build); | |
976 | printf(" RAID Levels :%s%s%s%s%s\n", | |
977 | imsm_orom_has_raid0(orom) ? " raid0" : "", | |
978 | imsm_orom_has_raid1(orom) ? " raid1" : "", | |
979 | imsm_orom_has_raid1e(orom) ? " raid1e" : "", | |
980 | imsm_orom_has_raid10(orom) ? " raid10" : "", | |
981 | imsm_orom_has_raid5(orom) ? " raid5" : ""); | |
982 | printf(" Max Disks : %d\n", orom->tds); | |
983 | printf(" Max Volumes : %d\n", orom->vpa); | |
984 | printf(" I/O Controller : %s\n", hba_path); | |
985 | ||
986 | /* find the smallest scsi host number to determine a port number base */ | |
987 | dir = opendir(hba_path); | |
988 | for (ent = dir ? readdir(dir) : NULL; ent; ent = readdir(dir)) { | |
989 | int host; | |
990 | ||
991 | if (sscanf(ent->d_name, "host%d", &host) != 1) | |
992 | continue; | |
993 | if (port_count == 0) | |
994 | host_base = host; | |
995 | else if (host < host_base) | |
996 | host_base = host; | |
997 | ||
998 | if (host + 1 > port_count + host_base) | |
999 | port_count = host + 1 - host_base; | |
1000 | ||
1001 | } | |
1002 | if (dir) | |
1003 | closedir(dir); | |
1004 | ||
1005 | if (!port_count || imsm_enumerate_ports(hba_path, port_count, | |
1006 | host_base, verbose) != 0) { | |
1007 | if (verbose) | |
1008 | fprintf(stderr, Name ": failed to enumerate ports\n"); | |
1009 | return 2; | |
1010 | } | |
1011 | ||
1012 | return 0; | |
1013 | } | |
cdddbdbc DW |
1014 | #endif |
1015 | ||
1016 | static int match_home_imsm(struct supertype *st, char *homehost) | |
1017 | { | |
5115ca67 DW |
1018 | /* the imsm metadata format does not specify any host |
1019 | * identification information. We return -1 since we can never | |
1020 | * confirm nor deny whether a given array is "meant" for this | |
1021 | * host. We rely on compare_super and the 'family_num' field to | |
1022 | * exclude member disks that do not belong, and we rely on | |
1023 | * mdadm.conf to specify the arrays that should be assembled. | |
1024 | * Auto-assembly may still pick up "foreign" arrays. | |
1025 | */ | |
cdddbdbc | 1026 | |
9362c1c8 | 1027 | return -1; |
cdddbdbc DW |
1028 | } |
1029 | ||
1030 | static void uuid_from_super_imsm(struct supertype *st, int uuid[4]) | |
1031 | { | |
51006d85 N |
1032 | /* The uuid returned here is used for: |
1033 | * uuid to put into bitmap file (Create, Grow) | |
1034 | * uuid for backup header when saving critical section (Grow) | |
1035 | * comparing uuids when re-adding a device into an array | |
1036 | * In these cases the uuid required is that of the data-array, | |
1037 | * not the device-set. | |
1038 | * uuid to recognise same set when adding a missing device back | |
1039 | * to an array. This is a uuid for the device-set. | |
1040 | * | |
1041 | * For each of these we can make do with a truncated | |
1042 | * or hashed uuid rather than the original, as long as | |
1043 | * everyone agrees. | |
1044 | * In each case the uuid required is that of the data-array, | |
1045 | * not the device-set. | |
43dad3d6 | 1046 | */ |
51006d85 N |
1047 | /* imsm does not track uuid's so we synthesis one using sha1 on |
1048 | * - The signature (Which is constant for all imsm array, but no matter) | |
1049 | * - the family_num of the container | |
1050 | * - the index number of the volume | |
1051 | * - the 'serial' number of the volume. | |
1052 | * Hopefully these are all constant. | |
1053 | */ | |
1054 | struct intel_super *super = st->sb; | |
43dad3d6 | 1055 | |
51006d85 N |
1056 | char buf[20]; |
1057 | struct sha1_ctx ctx; | |
1058 | struct imsm_dev *dev = NULL; | |
1059 | ||
1060 | sha1_init_ctx(&ctx); | |
92bd8f8d | 1061 | sha1_process_bytes(super->anchor->sig, MPB_SIG_LEN, &ctx); |
51006d85 N |
1062 | sha1_process_bytes(&super->anchor->family_num, sizeof(__u32), &ctx); |
1063 | if (super->current_vol >= 0) | |
1064 | dev = get_imsm_dev(super, super->current_vol); | |
1065 | if (dev) { | |
1066 | __u32 vol = super->current_vol; | |
1067 | sha1_process_bytes(&vol, sizeof(vol), &ctx); | |
1068 | sha1_process_bytes(dev->volume, MAX_RAID_SERIAL_LEN, &ctx); | |
1069 | } | |
1070 | sha1_finish_ctx(&ctx, buf); | |
1071 | memcpy(uuid, buf, 4*4); | |
cdddbdbc DW |
1072 | } |
1073 | ||
0d481d37 | 1074 | #if 0 |
4f5bc454 DW |
1075 | static void |
1076 | get_imsm_numerical_version(struct imsm_super *mpb, int *m, int *p) | |
cdddbdbc | 1077 | { |
cdddbdbc DW |
1078 | __u8 *v = get_imsm_version(mpb); |
1079 | __u8 *end = mpb->sig + MAX_SIGNATURE_LENGTH; | |
1080 | char major[] = { 0, 0, 0 }; | |
1081 | char minor[] = { 0 ,0, 0 }; | |
1082 | char patch[] = { 0, 0, 0 }; | |
1083 | char *ver_parse[] = { major, minor, patch }; | |
1084 | int i, j; | |
1085 | ||
1086 | i = j = 0; | |
1087 | while (*v != '\0' && v < end) { | |
1088 | if (*v != '.' && j < 2) | |
1089 | ver_parse[i][j++] = *v; | |
1090 | else { | |
1091 | i++; | |
1092 | j = 0; | |
1093 | } | |
1094 | v++; | |
1095 | } | |
1096 | ||
4f5bc454 DW |
1097 | *m = strtol(minor, NULL, 0); |
1098 | *p = strtol(patch, NULL, 0); | |
1099 | } | |
0d481d37 | 1100 | #endif |
4f5bc454 | 1101 | |
c2c087e6 DW |
1102 | static int imsm_level_to_layout(int level) |
1103 | { | |
1104 | switch (level) { | |
1105 | case 0: | |
1106 | case 1: | |
1107 | return 0; | |
1108 | case 5: | |
1109 | case 6: | |
a380c027 | 1110 | return ALGORITHM_LEFT_ASYMMETRIC; |
c2c087e6 | 1111 | case 10: |
c92a2527 | 1112 | return 0x102; |
c2c087e6 | 1113 | } |
a18a888e | 1114 | return UnSet; |
c2c087e6 DW |
1115 | } |
1116 | ||
bf5a934a DW |
1117 | static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info) |
1118 | { | |
1119 | struct intel_super *super = st->sb; | |
949c47a0 | 1120 | struct imsm_dev *dev = get_imsm_dev(super, super->current_vol); |
a965f303 | 1121 | struct imsm_map *map = get_imsm_map(dev, 0); |
bf5a934a DW |
1122 | |
1123 | info->container_member = super->current_vol; | |
1124 | info->array.raid_disks = map->num_members; | |
1125 | info->array.level = get_imsm_raid_level(map); | |
1126 | info->array.layout = imsm_level_to_layout(info->array.level); | |
1127 | info->array.md_minor = -1; | |
1128 | info->array.ctime = 0; | |
1129 | info->array.utime = 0; | |
301406c9 DW |
1130 | info->array.chunk_size = __le16_to_cpu(map->blocks_per_strip) << 9; |
1131 | info->array.state = !dev->vol.dirty; | |
1132 | ||
1133 | info->disk.major = 0; | |
1134 | info->disk.minor = 0; | |
bf5a934a DW |
1135 | |
1136 | info->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
1137 | info->component_size = __le32_to_cpu(map->blocks_per_member); | |
301406c9 | 1138 | memset(info->uuid, 0, sizeof(info->uuid)); |
bf5a934a | 1139 | |
f8f603f1 | 1140 | if (map->map_state == IMSM_T_STATE_UNINITIALIZED || dev->vol.dirty) |
301406c9 | 1141 | info->resync_start = 0; |
f8f603f1 DW |
1142 | else if (dev->vol.migr_state) |
1143 | info->resync_start = __le32_to_cpu(dev->vol.curr_migr_unit); | |
301406c9 DW |
1144 | else |
1145 | info->resync_start = ~0ULL; | |
1146 | ||
1147 | strncpy(info->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN); | |
1148 | info->name[MAX_RAID_SERIAL_LEN] = 0; | |
bf5a934a | 1149 | |
f35f2525 N |
1150 | info->array.major_version = -1; |
1151 | info->array.minor_version = -2; | |
bf5a934a DW |
1152 | sprintf(info->text_version, "/%s/%d", |
1153 | devnum2devname(st->container_dev), | |
1154 | info->container_member); | |
a67dd8cc | 1155 | info->safe_mode_delay = 4000; /* 4 secs like the Matrix driver */ |
51006d85 | 1156 | uuid_from_super_imsm(st, info->uuid); |
bf5a934a DW |
1157 | } |
1158 | ||
7a70e8aa DW |
1159 | /* check the config file to see if we can return a real uuid for this spare */ |
1160 | static void fixup_container_spare_uuid(struct mdinfo *inf) | |
1161 | { | |
1162 | struct mddev_ident_s *array_list; | |
1163 | ||
1164 | if (inf->array.level != LEVEL_CONTAINER || | |
1165 | memcmp(inf->uuid, uuid_match_any, sizeof(int[4])) != 0) | |
1166 | return; | |
1167 | ||
1168 | array_list = conf_get_ident(NULL); | |
1169 | ||
1170 | for (; array_list; array_list = array_list->next) { | |
1171 | if (array_list->uuid_set) { | |
1172 | struct supertype *_sst; /* spare supertype */ | |
1173 | struct supertype *_cst; /* container supertype */ | |
1174 | ||
1175 | _cst = array_list->st; | |
1176 | _sst = _cst->ss->match_metadata_desc(inf->text_version); | |
1177 | if (_sst) { | |
1178 | memcpy(inf->uuid, array_list->uuid, sizeof(int[4])); | |
1179 | free(_sst); | |
1180 | break; | |
1181 | } | |
1182 | } | |
1183 | } | |
1184 | } | |
bf5a934a | 1185 | |
4f5bc454 DW |
1186 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info) |
1187 | { | |
1188 | struct intel_super *super = st->sb; | |
4f5bc454 DW |
1189 | struct imsm_disk *disk; |
1190 | __u32 s; | |
4f5bc454 | 1191 | |
bf5a934a DW |
1192 | if (super->current_vol >= 0) { |
1193 | getinfo_super_imsm_volume(st, info); | |
1194 | return; | |
1195 | } | |
d23fe947 DW |
1196 | |
1197 | /* Set raid_disks to zero so that Assemble will always pull in valid | |
1198 | * spares | |
1199 | */ | |
1200 | info->array.raid_disks = 0; | |
cdddbdbc DW |
1201 | info->array.level = LEVEL_CONTAINER; |
1202 | info->array.layout = 0; | |
1203 | info->array.md_minor = -1; | |
c2c087e6 | 1204 | info->array.ctime = 0; /* N/A for imsm */ |
cdddbdbc DW |
1205 | info->array.utime = 0; |
1206 | info->array.chunk_size = 0; | |
1207 | ||
1208 | info->disk.major = 0; | |
1209 | info->disk.minor = 0; | |
cdddbdbc | 1210 | info->disk.raid_disk = -1; |
c2c087e6 | 1211 | info->reshape_active = 0; |
f35f2525 N |
1212 | info->array.major_version = -1; |
1213 | info->array.minor_version = -2; | |
c2c087e6 | 1214 | strcpy(info->text_version, "imsm"); |
a67dd8cc | 1215 | info->safe_mode_delay = 0; |
c2c087e6 DW |
1216 | info->disk.number = -1; |
1217 | info->disk.state = 0; | |
c5afc314 | 1218 | info->name[0] = 0; |
c2c087e6 | 1219 | |
4a04ec6c | 1220 | if (super->disks) { |
14e8215b DW |
1221 | __u32 reserved = imsm_reserved_sectors(super, super->disks); |
1222 | ||
b9f594fe | 1223 | disk = &super->disks->disk; |
14e8215b DW |
1224 | info->data_offset = __le32_to_cpu(disk->total_blocks) - reserved; |
1225 | info->component_size = reserved; | |
f2f27e63 | 1226 | s = disk->status; |
4a04ec6c | 1227 | info->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0; |
df474657 DW |
1228 | /* we don't change info->disk.raid_disk here because |
1229 | * this state will be finalized in mdmon after we have | |
1230 | * found the 'most fresh' version of the metadata | |
1231 | */ | |
1232 | info->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0; | |
032e9e29 | 1233 | info->disk.state |= s & SPARE_DISK ? 0 : (1 << MD_DISK_SYNC); |
cdddbdbc | 1234 | } |
a575e2a7 DW |
1235 | |
1236 | /* only call uuid_from_super_imsm when this disk is part of a populated container, | |
1237 | * ->compare_super may have updated the 'num_raid_devs' field for spares | |
1238 | */ | |
1239 | if (info->disk.state & (1 << MD_DISK_SYNC) || super->anchor->num_raid_devs) | |
36ba7d48 | 1240 | uuid_from_super_imsm(st, info->uuid); |
7a70e8aa | 1241 | else { |
032e9e29 | 1242 | memcpy(info->uuid, uuid_match_any, sizeof(int[4])); |
7a70e8aa DW |
1243 | fixup_container_spare_uuid(info); |
1244 | } | |
cdddbdbc DW |
1245 | } |
1246 | ||
cdddbdbc DW |
1247 | static int update_super_imsm(struct supertype *st, struct mdinfo *info, |
1248 | char *update, char *devname, int verbose, | |
1249 | int uuid_set, char *homehost) | |
1250 | { | |
f352c545 DW |
1251 | /* FIXME */ |
1252 | ||
1253 | /* For 'assemble' and 'force' we need to return non-zero if any | |
1254 | * change was made. For others, the return value is ignored. | |
1255 | * Update options are: | |
1256 | * force-one : This device looks a bit old but needs to be included, | |
1257 | * update age info appropriately. | |
1258 | * assemble: clear any 'faulty' flag to allow this device to | |
1259 | * be assembled. | |
1260 | * force-array: Array is degraded but being forced, mark it clean | |
1261 | * if that will be needed to assemble it. | |
1262 | * | |
1263 | * newdev: not used ???? | |
1264 | * grow: Array has gained a new device - this is currently for | |
1265 | * linear only | |
1266 | * resync: mark as dirty so a resync will happen. | |
1267 | * name: update the name - preserving the homehost | |
1268 | * | |
1269 | * Following are not relevant for this imsm: | |
1270 | * sparc2.2 : update from old dodgey metadata | |
1271 | * super-minor: change the preferred_minor number | |
1272 | * summaries: update redundant counters. | |
1273 | * uuid: Change the uuid of the array to match watch is given | |
1274 | * homehost: update the recorded homehost | |
1275 | * _reshape_progress: record new reshape_progress position. | |
1276 | */ | |
1277 | int rv = 0; | |
1278 | //struct intel_super *super = st->sb; | |
1279 | //struct imsm_super *mpb = super->mpb; | |
1280 | ||
1281 | if (strcmp(update, "grow") == 0) { | |
1282 | } | |
1283 | if (strcmp(update, "resync") == 0) { | |
1284 | /* dev->vol.dirty = 1; */ | |
1285 | } | |
1286 | ||
1287 | /* IMSM has no concept of UUID or homehost */ | |
1288 | ||
1289 | return rv; | |
cdddbdbc DW |
1290 | } |
1291 | ||
c2c087e6 | 1292 | static size_t disks_to_mpb_size(int disks) |
cdddbdbc | 1293 | { |
c2c087e6 | 1294 | size_t size; |
cdddbdbc | 1295 | |
c2c087e6 DW |
1296 | size = sizeof(struct imsm_super); |
1297 | size += (disks - 1) * sizeof(struct imsm_disk); | |
1298 | size += 2 * sizeof(struct imsm_dev); | |
1299 | /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */ | |
1300 | size += (4 - 2) * sizeof(struct imsm_map); | |
1301 | /* 4 possible disk_ord_tbl's */ | |
1302 | size += 4 * (disks - 1) * sizeof(__u32); | |
1303 | ||
1304 | return size; | |
1305 | } | |
1306 | ||
1307 | static __u64 avail_size_imsm(struct supertype *st, __u64 devsize) | |
1308 | { | |
1309 | if (devsize < (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS)) | |
1310 | return 0; | |
1311 | ||
1312 | return devsize - (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
cdddbdbc DW |
1313 | } |
1314 | ||
ba2de7ba DW |
1315 | static void free_devlist(struct intel_super *super) |
1316 | { | |
1317 | struct intel_dev *dv; | |
1318 | ||
1319 | while (super->devlist) { | |
1320 | dv = super->devlist->next; | |
1321 | free(super->devlist->dev); | |
1322 | free(super->devlist); | |
1323 | super->devlist = dv; | |
1324 | } | |
1325 | } | |
1326 | ||
1327 | static void imsm_copy_dev(struct imsm_dev *dest, struct imsm_dev *src) | |
1328 | { | |
1329 | memcpy(dest, src, sizeof_imsm_dev(src, 0)); | |
1330 | } | |
1331 | ||
cdddbdbc DW |
1332 | static int compare_super_imsm(struct supertype *st, struct supertype *tst) |
1333 | { | |
1334 | /* | |
1335 | * return: | |
1336 | * 0 same, or first was empty, and second was copied | |
1337 | * 1 second had wrong number | |
1338 | * 2 wrong uuid | |
1339 | * 3 wrong other info | |
1340 | */ | |
1341 | struct intel_super *first = st->sb; | |
1342 | struct intel_super *sec = tst->sb; | |
1343 | ||
1344 | if (!first) { | |
1345 | st->sb = tst->sb; | |
1346 | tst->sb = NULL; | |
1347 | return 0; | |
1348 | } | |
1349 | ||
949c47a0 | 1350 | if (memcmp(first->anchor->sig, sec->anchor->sig, MAX_SIGNATURE_LENGTH) != 0) |
cdddbdbc | 1351 | return 3; |
d23fe947 DW |
1352 | |
1353 | /* if an anchor does not have num_raid_devs set then it is a free | |
1354 | * floating spare | |
1355 | */ | |
1356 | if (first->anchor->num_raid_devs > 0 && | |
1357 | sec->anchor->num_raid_devs > 0) { | |
1358 | if (first->anchor->family_num != sec->anchor->family_num) | |
1359 | return 3; | |
d23fe947 | 1360 | } |
cdddbdbc | 1361 | |
3e372e5a DW |
1362 | /* if 'first' is a spare promote it to a populated mpb with sec's |
1363 | * family number | |
1364 | */ | |
1365 | if (first->anchor->num_raid_devs == 0 && | |
1366 | sec->anchor->num_raid_devs > 0) { | |
78d30f94 | 1367 | int i; |
ba2de7ba DW |
1368 | struct intel_dev *dv; |
1369 | struct imsm_dev *dev; | |
78d30f94 DW |
1370 | |
1371 | /* we need to copy raid device info from sec if an allocation | |
1372 | * fails here we don't associate the spare | |
1373 | */ | |
1374 | for (i = 0; i < sec->anchor->num_raid_devs; i++) { | |
ba2de7ba DW |
1375 | dv = malloc(sizeof(*dv)); |
1376 | if (!dv) | |
1377 | break; | |
1378 | dev = malloc(sizeof_imsm_dev(get_imsm_dev(sec, i), 1)); | |
1379 | if (!dev) { | |
1380 | free(dv); | |
1381 | break; | |
78d30f94 | 1382 | } |
ba2de7ba DW |
1383 | dv->dev = dev; |
1384 | dv->index = i; | |
1385 | dv->next = first->devlist; | |
1386 | first->devlist = dv; | |
78d30f94 | 1387 | } |
ba2de7ba DW |
1388 | if (i <= sec->anchor->num_raid_devs) { |
1389 | /* allocation failure */ | |
1390 | free_devlist(first); | |
1391 | fprintf(stderr, "imsm: failed to associate spare\n"); | |
1392 | return 3; | |
78d30f94 | 1393 | } |
ba2de7ba DW |
1394 | for (i = 0; i < sec->anchor->num_raid_devs; i++) |
1395 | imsm_copy_dev(get_imsm_dev(first, i), get_imsm_dev(sec, i)); | |
78d30f94 | 1396 | |
3e372e5a DW |
1397 | first->anchor->num_raid_devs = sec->anchor->num_raid_devs; |
1398 | first->anchor->family_num = sec->anchor->family_num; | |
1399 | } | |
1400 | ||
cdddbdbc DW |
1401 | return 0; |
1402 | } | |
1403 | ||
0030e8d6 DW |
1404 | static void fd2devname(int fd, char *name) |
1405 | { | |
1406 | struct stat st; | |
1407 | char path[256]; | |
1408 | char dname[100]; | |
1409 | char *nm; | |
1410 | int rv; | |
1411 | ||
1412 | name[0] = '\0'; | |
1413 | if (fstat(fd, &st) != 0) | |
1414 | return; | |
1415 | sprintf(path, "/sys/dev/block/%d:%d", | |
1416 | major(st.st_rdev), minor(st.st_rdev)); | |
1417 | ||
1418 | rv = readlink(path, dname, sizeof(dname)); | |
1419 | if (rv <= 0) | |
1420 | return; | |
1421 | ||
1422 | dname[rv] = '\0'; | |
1423 | nm = strrchr(dname, '/'); | |
1424 | nm++; | |
1425 | snprintf(name, MAX_RAID_SERIAL_LEN, "/dev/%s", nm); | |
1426 | } | |
1427 | ||
1428 | ||
cdddbdbc DW |
1429 | extern int scsi_get_serial(int fd, void *buf, size_t buf_len); |
1430 | ||
1431 | static int imsm_read_serial(int fd, char *devname, | |
1432 | __u8 serial[MAX_RAID_SERIAL_LEN]) | |
1433 | { | |
1434 | unsigned char scsi_serial[255]; | |
cdddbdbc DW |
1435 | int rv; |
1436 | int rsp_len; | |
1f24f035 DW |
1437 | int len; |
1438 | char *c, *rsp_buf; | |
cdddbdbc DW |
1439 | |
1440 | memset(scsi_serial, 0, sizeof(scsi_serial)); | |
cdddbdbc | 1441 | |
f9ba0ff1 DW |
1442 | rv = scsi_get_serial(fd, scsi_serial, sizeof(scsi_serial)); |
1443 | ||
40ebbb9c | 1444 | if (rv && check_env("IMSM_DEVNAME_AS_SERIAL")) { |
f9ba0ff1 DW |
1445 | memset(serial, 0, MAX_RAID_SERIAL_LEN); |
1446 | fd2devname(fd, (char *) serial); | |
0030e8d6 DW |
1447 | return 0; |
1448 | } | |
1449 | ||
cdddbdbc DW |
1450 | if (rv != 0) { |
1451 | if (devname) | |
1452 | fprintf(stderr, | |
1453 | Name ": Failed to retrieve serial for %s\n", | |
1454 | devname); | |
1455 | return rv; | |
1456 | } | |
1457 | ||
5c3db629 | 1458 | /* trim leading whitespace */ |
cdddbdbc | 1459 | rsp_len = scsi_serial[3]; |
03cd4cc8 DW |
1460 | if (!rsp_len) { |
1461 | if (devname) | |
1462 | fprintf(stderr, | |
1463 | Name ": Failed to retrieve serial for %s\n", | |
1464 | devname); | |
1465 | return 2; | |
1466 | } | |
1f24f035 DW |
1467 | rsp_buf = (char *) &scsi_serial[4]; |
1468 | c = rsp_buf; | |
1469 | while (isspace(*c)) | |
1470 | c++; | |
5c3db629 DW |
1471 | |
1472 | /* truncate len to the end of rsp_buf if necessary */ | |
1f24f035 DW |
1473 | if (c + MAX_RAID_SERIAL_LEN > rsp_buf + rsp_len) |
1474 | len = rsp_len - (c - rsp_buf); | |
1475 | else | |
1476 | len = MAX_RAID_SERIAL_LEN; | |
5c3db629 DW |
1477 | |
1478 | /* initialize the buffer and copy rsp_buf characters */ | |
1479 | memset(serial, 0, MAX_RAID_SERIAL_LEN); | |
1f24f035 | 1480 | memcpy(serial, c, len); |
5c3db629 DW |
1481 | |
1482 | /* trim trailing whitespace starting with the last character copied */ | |
1f24f035 DW |
1483 | c = (char *) &serial[len - 1]; |
1484 | while (isspace(*c) || *c == '\0') | |
1485 | *c-- = '\0'; | |
cdddbdbc DW |
1486 | |
1487 | return 0; | |
1488 | } | |
1489 | ||
1f24f035 DW |
1490 | static int serialcmp(__u8 *s1, __u8 *s2) |
1491 | { | |
1492 | return strncmp((char *) s1, (char *) s2, MAX_RAID_SERIAL_LEN); | |
1493 | } | |
1494 | ||
1495 | static void serialcpy(__u8 *dest, __u8 *src) | |
1496 | { | |
1497 | strncpy((char *) dest, (char *) src, MAX_RAID_SERIAL_LEN); | |
1498 | } | |
1499 | ||
54c2c1ea DW |
1500 | static struct dl *serial_to_dl(__u8 *serial, struct intel_super *super) |
1501 | { | |
1502 | struct dl *dl; | |
1503 | ||
1504 | for (dl = super->disks; dl; dl = dl->next) | |
1505 | if (serialcmp(dl->serial, serial) == 0) | |
1506 | break; | |
1507 | ||
1508 | return dl; | |
1509 | } | |
1510 | ||
cdddbdbc DW |
1511 | static int |
1512 | load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd) | |
1513 | { | |
cdddbdbc DW |
1514 | struct dl *dl; |
1515 | struct stat stb; | |
cdddbdbc DW |
1516 | int rv; |
1517 | int i; | |
d23fe947 DW |
1518 | int alloc = 1; |
1519 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
1520 | ||
1521 | rv = imsm_read_serial(fd, devname, serial); | |
1522 | ||
1523 | if (rv != 0) | |
1524 | return 2; | |
1525 | ||
1526 | /* check if this is a disk we have seen before. it may be a spare in | |
1527 | * super->disks while the current anchor believes it is a raid member, | |
1528 | * check if we need to update dl->index | |
1529 | */ | |
54c2c1ea | 1530 | dl = serial_to_dl(serial, super); |
d23fe947 DW |
1531 | if (!dl) |
1532 | dl = malloc(sizeof(*dl)); | |
1533 | else | |
1534 | alloc = 0; | |
cdddbdbc | 1535 | |
b9f594fe | 1536 | if (!dl) { |
cdddbdbc DW |
1537 | if (devname) |
1538 | fprintf(stderr, | |
1539 | Name ": failed to allocate disk buffer for %s\n", | |
1540 | devname); | |
1541 | return 2; | |
1542 | } | |
cdddbdbc | 1543 | |
d23fe947 DW |
1544 | if (alloc) { |
1545 | fstat(fd, &stb); | |
1546 | dl->major = major(stb.st_rdev); | |
1547 | dl->minor = minor(stb.st_rdev); | |
1548 | dl->next = super->disks; | |
1549 | dl->fd = keep_fd ? fd : -1; | |
1550 | dl->devname = devname ? strdup(devname) : NULL; | |
1f24f035 | 1551 | serialcpy(dl->serial, serial); |
8796fdc4 | 1552 | dl->index = -2; |
0dcecb2e | 1553 | dl->e = NULL; |
d23fe947 DW |
1554 | } else if (keep_fd) { |
1555 | close(dl->fd); | |
1556 | dl->fd = fd; | |
1557 | } | |
cdddbdbc | 1558 | |
d23fe947 | 1559 | /* look up this disk's index in the current anchor */ |
949c47a0 DW |
1560 | for (i = 0; i < super->anchor->num_disks; i++) { |
1561 | struct imsm_disk *disk_iter; | |
1562 | ||
1563 | disk_iter = __get_imsm_disk(super->anchor, i); | |
cdddbdbc | 1564 | |
1f24f035 | 1565 | if (serialcmp(disk_iter->serial, dl->serial) == 0) { |
b9f594fe | 1566 | dl->disk = *disk_iter; |
d23fe947 DW |
1567 | /* only set index on disks that are a member of a |
1568 | * populated contianer, i.e. one with raid_devs | |
1569 | */ | |
f2f27e63 | 1570 | if (dl->disk.status & FAILED_DISK) |
6c386dd3 | 1571 | dl->index = -2; |
f2f27e63 | 1572 | else if (dl->disk.status & SPARE_DISK) |
d23fe947 DW |
1573 | dl->index = -1; |
1574 | else | |
1575 | dl->index = i; | |
8796fdc4 | 1576 | |
cdddbdbc | 1577 | break; |
949c47a0 | 1578 | } |
cdddbdbc DW |
1579 | } |
1580 | ||
3f6efecc DW |
1581 | /* no match, maybe a stale failed drive */ |
1582 | if (i == super->anchor->num_disks && dl->index >= 0) { | |
1583 | dl->disk = *__get_imsm_disk(super->anchor, dl->index); | |
f2f27e63 | 1584 | if (dl->disk.status & FAILED_DISK) |
3f6efecc DW |
1585 | dl->index = -2; |
1586 | } | |
1587 | ||
d23fe947 DW |
1588 | if (alloc) |
1589 | super->disks = dl; | |
6c386dd3 | 1590 | |
949c47a0 DW |
1591 | return 0; |
1592 | } | |
1593 | ||
0e600426 | 1594 | #ifndef MDASSEMBLE |
0c046afd DW |
1595 | /* When migrating map0 contains the 'destination' state while map1 |
1596 | * contains the current state. When not migrating map0 contains the | |
1597 | * current state. This routine assumes that map[0].map_state is set to | |
1598 | * the current array state before being called. | |
1599 | * | |
1600 | * Migration is indicated by one of the following states | |
1601 | * 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed) | |
e3bba0e0 | 1602 | * 2/ Initialize (migr_state=1 migr_type=MIGR_INIT map0state=normal |
0c046afd | 1603 | * map1state=unitialized) |
e3bba0e0 | 1604 | * 3/ Verify (Resync) (migr_state=1 migr_type=MIGR_REBUILD map0state=normal |
0c046afd | 1605 | * map1state=normal) |
e3bba0e0 | 1606 | * 4/ Rebuild (migr_state=1 migr_type=MIGR_REBUILD map0state=normal |
0c046afd DW |
1607 | * map1state=degraded) |
1608 | */ | |
0556e1a2 | 1609 | static void migrate(struct imsm_dev *dev, __u8 to_state, int migr_type) |
3393c6af | 1610 | { |
0c046afd | 1611 | struct imsm_map *dest; |
3393c6af DW |
1612 | struct imsm_map *src = get_imsm_map(dev, 0); |
1613 | ||
0c046afd | 1614 | dev->vol.migr_state = 1; |
0556e1a2 | 1615 | dev->vol.migr_type = migr_type; |
f8f603f1 | 1616 | dev->vol.curr_migr_unit = 0; |
0c046afd DW |
1617 | dest = get_imsm_map(dev, 1); |
1618 | ||
0556e1a2 | 1619 | /* duplicate and then set the target end state in map[0] */ |
3393c6af | 1620 | memcpy(dest, src, sizeof_imsm_map(src)); |
0556e1a2 DW |
1621 | if (migr_type == MIGR_REBUILD) { |
1622 | __u32 ord; | |
1623 | int i; | |
1624 | ||
1625 | for (i = 0; i < src->num_members; i++) { | |
1626 | ord = __le32_to_cpu(src->disk_ord_tbl[i]); | |
1627 | set_imsm_ord_tbl_ent(src, i, ord_to_idx(ord)); | |
1628 | } | |
1629 | } | |
1630 | ||
0c046afd | 1631 | src->map_state = to_state; |
949c47a0 | 1632 | } |
f8f603f1 DW |
1633 | |
1634 | static void end_migration(struct imsm_dev *dev, __u8 map_state) | |
1635 | { | |
1636 | struct imsm_map *map = get_imsm_map(dev, 0); | |
0556e1a2 DW |
1637 | struct imsm_map *prev = get_imsm_map(dev, dev->vol.migr_state); |
1638 | int i; | |
1639 | ||
1640 | /* merge any IMSM_ORD_REBUILD bits that were not successfully | |
1641 | * completed in the last migration. | |
1642 | * | |
1643 | * FIXME add support for online capacity expansion and | |
1644 | * raid-level-migration | |
1645 | */ | |
1646 | for (i = 0; i < prev->num_members; i++) | |
1647 | map->disk_ord_tbl[i] |= prev->disk_ord_tbl[i]; | |
f8f603f1 DW |
1648 | |
1649 | dev->vol.migr_state = 0; | |
1650 | dev->vol.curr_migr_unit = 0; | |
1651 | map->map_state = map_state; | |
1652 | } | |
0e600426 | 1653 | #endif |
949c47a0 DW |
1654 | |
1655 | static int parse_raid_devices(struct intel_super *super) | |
1656 | { | |
1657 | int i; | |
1658 | struct imsm_dev *dev_new; | |
4d7b1503 DW |
1659 | size_t len, len_migr; |
1660 | size_t space_needed = 0; | |
1661 | struct imsm_super *mpb = super->anchor; | |
949c47a0 DW |
1662 | |
1663 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
1664 | struct imsm_dev *dev_iter = __get_imsm_dev(super->anchor, i); | |
ba2de7ba | 1665 | struct intel_dev *dv; |
949c47a0 | 1666 | |
4d7b1503 DW |
1667 | len = sizeof_imsm_dev(dev_iter, 0); |
1668 | len_migr = sizeof_imsm_dev(dev_iter, 1); | |
1669 | if (len_migr > len) | |
1670 | space_needed += len_migr - len; | |
1671 | ||
ba2de7ba DW |
1672 | dv = malloc(sizeof(*dv)); |
1673 | if (!dv) | |
1674 | return 1; | |
4d7b1503 | 1675 | dev_new = malloc(len_migr); |
ba2de7ba DW |
1676 | if (!dev_new) { |
1677 | free(dv); | |
949c47a0 | 1678 | return 1; |
ba2de7ba | 1679 | } |
949c47a0 | 1680 | imsm_copy_dev(dev_new, dev_iter); |
ba2de7ba DW |
1681 | dv->dev = dev_new; |
1682 | dv->index = i; | |
1683 | dv->next = super->devlist; | |
1684 | super->devlist = dv; | |
949c47a0 | 1685 | } |
cdddbdbc | 1686 | |
4d7b1503 DW |
1687 | /* ensure that super->buf is large enough when all raid devices |
1688 | * are migrating | |
1689 | */ | |
1690 | if (__le32_to_cpu(mpb->mpb_size) + space_needed > super->len) { | |
1691 | void *buf; | |
1692 | ||
1693 | len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + space_needed, 512); | |
1694 | if (posix_memalign(&buf, 512, len) != 0) | |
1695 | return 1; | |
1696 | ||
1697 | memcpy(buf, super->buf, len); | |
1698 | free(super->buf); | |
1699 | super->buf = buf; | |
1700 | super->len = len; | |
1701 | } | |
1702 | ||
cdddbdbc DW |
1703 | return 0; |
1704 | } | |
1705 | ||
604b746f JD |
1706 | /* retrieve a pointer to the bbm log which starts after all raid devices */ |
1707 | struct bbm_log *__get_imsm_bbm_log(struct imsm_super *mpb) | |
1708 | { | |
1709 | void *ptr = NULL; | |
1710 | ||
1711 | if (__le32_to_cpu(mpb->bbm_log_size)) { | |
1712 | ptr = mpb; | |
1713 | ptr += mpb->mpb_size - __le32_to_cpu(mpb->bbm_log_size); | |
1714 | } | |
1715 | ||
1716 | return ptr; | |
1717 | } | |
1718 | ||
d23fe947 | 1719 | static void __free_imsm(struct intel_super *super, int free_disks); |
9ca2c81c | 1720 | |
cdddbdbc DW |
1721 | /* load_imsm_mpb - read matrix metadata |
1722 | * allocates super->mpb to be freed by free_super | |
1723 | */ | |
1724 | static int load_imsm_mpb(int fd, struct intel_super *super, char *devname) | |
1725 | { | |
1726 | unsigned long long dsize; | |
cdddbdbc DW |
1727 | unsigned long long sectors; |
1728 | struct stat; | |
6416d527 | 1729 | struct imsm_super *anchor; |
cdddbdbc | 1730 | __u32 check_sum; |
949c47a0 | 1731 | int rc; |
cdddbdbc | 1732 | |
cdddbdbc DW |
1733 | get_dev_size(fd, NULL, &dsize); |
1734 | ||
1735 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) { | |
1736 | if (devname) | |
1737 | fprintf(stderr, | |
1738 | Name ": Cannot seek to anchor block on %s: %s\n", | |
1739 | devname, strerror(errno)); | |
1740 | return 1; | |
1741 | } | |
1742 | ||
949c47a0 | 1743 | if (posix_memalign((void**)&anchor, 512, 512) != 0) { |
ad97895e DW |
1744 | if (devname) |
1745 | fprintf(stderr, | |
1746 | Name ": Failed to allocate imsm anchor buffer" | |
1747 | " on %s\n", devname); | |
1748 | return 1; | |
1749 | } | |
949c47a0 | 1750 | if (read(fd, anchor, 512) != 512) { |
cdddbdbc DW |
1751 | if (devname) |
1752 | fprintf(stderr, | |
1753 | Name ": Cannot read anchor block on %s: %s\n", | |
1754 | devname, strerror(errno)); | |
6416d527 | 1755 | free(anchor); |
cdddbdbc DW |
1756 | return 1; |
1757 | } | |
1758 | ||
6416d527 | 1759 | if (strncmp((char *) anchor->sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) { |
cdddbdbc DW |
1760 | if (devname) |
1761 | fprintf(stderr, | |
1762 | Name ": no IMSM anchor on %s\n", devname); | |
6416d527 | 1763 | free(anchor); |
cdddbdbc DW |
1764 | return 2; |
1765 | } | |
1766 | ||
d23fe947 | 1767 | __free_imsm(super, 0); |
949c47a0 DW |
1768 | super->len = ROUND_UP(anchor->mpb_size, 512); |
1769 | if (posix_memalign(&super->buf, 512, super->len) != 0) { | |
cdddbdbc DW |
1770 | if (devname) |
1771 | fprintf(stderr, | |
1772 | Name ": unable to allocate %zu byte mpb buffer\n", | |
949c47a0 | 1773 | super->len); |
6416d527 | 1774 | free(anchor); |
cdddbdbc DW |
1775 | return 2; |
1776 | } | |
949c47a0 | 1777 | memcpy(super->buf, anchor, 512); |
cdddbdbc | 1778 | |
6416d527 NB |
1779 | sectors = mpb_sectors(anchor) - 1; |
1780 | free(anchor); | |
949c47a0 | 1781 | if (!sectors) { |
ecf45690 DW |
1782 | check_sum = __gen_imsm_checksum(super->anchor); |
1783 | if (check_sum != __le32_to_cpu(super->anchor->check_sum)) { | |
1784 | if (devname) | |
1785 | fprintf(stderr, | |
1786 | Name ": IMSM checksum %x != %x on %s\n", | |
1787 | check_sum, | |
1788 | __le32_to_cpu(super->anchor->check_sum), | |
1789 | devname); | |
1790 | return 2; | |
1791 | } | |
1792 | ||
949c47a0 DW |
1793 | rc = load_imsm_disk(fd, super, devname, 0); |
1794 | if (rc == 0) | |
1795 | rc = parse_raid_devices(super); | |
1796 | return rc; | |
1797 | } | |
cdddbdbc DW |
1798 | |
1799 | /* read the extended mpb */ | |
1800 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) { | |
1801 | if (devname) | |
1802 | fprintf(stderr, | |
1803 | Name ": Cannot seek to extended mpb on %s: %s\n", | |
1804 | devname, strerror(errno)); | |
1805 | return 1; | |
1806 | } | |
1807 | ||
949c47a0 | 1808 | if (read(fd, super->buf + 512, super->len - 512) != super->len - 512) { |
cdddbdbc DW |
1809 | if (devname) |
1810 | fprintf(stderr, | |
1811 | Name ": Cannot read extended mpb on %s: %s\n", | |
1812 | devname, strerror(errno)); | |
1813 | return 2; | |
1814 | } | |
1815 | ||
949c47a0 DW |
1816 | check_sum = __gen_imsm_checksum(super->anchor); |
1817 | if (check_sum != __le32_to_cpu(super->anchor->check_sum)) { | |
cdddbdbc DW |
1818 | if (devname) |
1819 | fprintf(stderr, | |
1820 | Name ": IMSM checksum %x != %x on %s\n", | |
949c47a0 | 1821 | check_sum, __le32_to_cpu(super->anchor->check_sum), |
cdddbdbc | 1822 | devname); |
db575f3b | 1823 | return 3; |
cdddbdbc DW |
1824 | } |
1825 | ||
604b746f JD |
1826 | /* FIXME the BBM log is disk specific so we cannot use this global |
1827 | * buffer for all disks. Ok for now since we only look at the global | |
1828 | * bbm_log_size parameter to gate assembly | |
1829 | */ | |
1830 | super->bbm_log = __get_imsm_bbm_log(super->anchor); | |
1831 | ||
949c47a0 DW |
1832 | rc = load_imsm_disk(fd, super, devname, 0); |
1833 | if (rc == 0) | |
1834 | rc = parse_raid_devices(super); | |
4d7b1503 | 1835 | |
949c47a0 | 1836 | return rc; |
cdddbdbc DW |
1837 | } |
1838 | ||
ae6aad82 DW |
1839 | static void __free_imsm_disk(struct dl *d) |
1840 | { | |
1841 | if (d->fd >= 0) | |
1842 | close(d->fd); | |
1843 | if (d->devname) | |
1844 | free(d->devname); | |
0dcecb2e DW |
1845 | if (d->e) |
1846 | free(d->e); | |
ae6aad82 DW |
1847 | free(d); |
1848 | ||
1849 | } | |
cdddbdbc DW |
1850 | static void free_imsm_disks(struct intel_super *super) |
1851 | { | |
47ee5a45 | 1852 | struct dl *d; |
cdddbdbc | 1853 | |
47ee5a45 DW |
1854 | while (super->disks) { |
1855 | d = super->disks; | |
cdddbdbc | 1856 | super->disks = d->next; |
ae6aad82 | 1857 | __free_imsm_disk(d); |
cdddbdbc | 1858 | } |
47ee5a45 DW |
1859 | while (super->missing) { |
1860 | d = super->missing; | |
1861 | super->missing = d->next; | |
1862 | __free_imsm_disk(d); | |
1863 | } | |
1864 | ||
cdddbdbc DW |
1865 | } |
1866 | ||
9ca2c81c | 1867 | /* free all the pieces hanging off of a super pointer */ |
d23fe947 | 1868 | static void __free_imsm(struct intel_super *super, int free_disks) |
cdddbdbc | 1869 | { |
9ca2c81c | 1870 | if (super->buf) { |
949c47a0 | 1871 | free(super->buf); |
9ca2c81c DW |
1872 | super->buf = NULL; |
1873 | } | |
d23fe947 DW |
1874 | if (free_disks) |
1875 | free_imsm_disks(super); | |
ba2de7ba | 1876 | free_devlist(super); |
88c32bb1 DW |
1877 | if (super->hba) { |
1878 | free((void *) super->hba); | |
1879 | super->hba = NULL; | |
1880 | } | |
cdddbdbc DW |
1881 | } |
1882 | ||
9ca2c81c DW |
1883 | static void free_imsm(struct intel_super *super) |
1884 | { | |
d23fe947 | 1885 | __free_imsm(super, 1); |
9ca2c81c DW |
1886 | free(super); |
1887 | } | |
cdddbdbc DW |
1888 | |
1889 | static void free_super_imsm(struct supertype *st) | |
1890 | { | |
1891 | struct intel_super *super = st->sb; | |
1892 | ||
1893 | if (!super) | |
1894 | return; | |
1895 | ||
1896 | free_imsm(super); | |
1897 | st->sb = NULL; | |
1898 | } | |
1899 | ||
c2c087e6 DW |
1900 | static struct intel_super *alloc_super(int creating_imsm) |
1901 | { | |
1902 | struct intel_super *super = malloc(sizeof(*super)); | |
1903 | ||
1904 | if (super) { | |
1905 | memset(super, 0, sizeof(*super)); | |
1906 | super->creating_imsm = creating_imsm; | |
bf5a934a | 1907 | super->current_vol = -1; |
0dcecb2e | 1908 | super->create_offset = ~((__u32 ) 0); |
88c32bb1 DW |
1909 | if (!check_env("IMSM_NO_PLATFORM")) |
1910 | super->orom = find_imsm_orom(); | |
cceebc67 | 1911 | if (super->orom && !check_env("IMSM_TEST_OROM")) { |
88c32bb1 DW |
1912 | struct sys_dev *list, *ent; |
1913 | ||
1914 | /* find the first intel ahci controller */ | |
1915 | list = find_driver_devices("pci", "ahci"); | |
1916 | for (ent = list; ent; ent = ent->next) | |
1917 | if (devpath_to_vendor(ent->path) == 0x8086) | |
1918 | break; | |
1919 | if (ent) { | |
1920 | super->hba = ent->path; | |
1921 | ent->path = NULL; | |
1922 | } | |
1923 | free_sys_dev(&list); | |
1924 | } | |
c2c087e6 DW |
1925 | } |
1926 | ||
1927 | return super; | |
1928 | } | |
1929 | ||
cdddbdbc | 1930 | #ifndef MDASSEMBLE |
47ee5a45 DW |
1931 | /* find_missing - helper routine for load_super_imsm_all that identifies |
1932 | * disks that have disappeared from the system. This routine relies on | |
1933 | * the mpb being uptodate, which it is at load time. | |
1934 | */ | |
1935 | static int find_missing(struct intel_super *super) | |
1936 | { | |
1937 | int i; | |
1938 | struct imsm_super *mpb = super->anchor; | |
1939 | struct dl *dl; | |
1940 | struct imsm_disk *disk; | |
47ee5a45 DW |
1941 | |
1942 | for (i = 0; i < mpb->num_disks; i++) { | |
1943 | disk = __get_imsm_disk(mpb, i); | |
54c2c1ea | 1944 | dl = serial_to_dl(disk->serial, super); |
47ee5a45 DW |
1945 | if (dl) |
1946 | continue; | |
47ee5a45 DW |
1947 | |
1948 | dl = malloc(sizeof(*dl)); | |
1949 | if (!dl) | |
1950 | return 1; | |
1951 | dl->major = 0; | |
1952 | dl->minor = 0; | |
1953 | dl->fd = -1; | |
1954 | dl->devname = strdup("missing"); | |
1955 | dl->index = i; | |
1956 | serialcpy(dl->serial, disk->serial); | |
1957 | dl->disk = *disk; | |
689c9bf3 | 1958 | dl->e = NULL; |
47ee5a45 DW |
1959 | dl->next = super->missing; |
1960 | super->missing = dl; | |
1961 | } | |
1962 | ||
1963 | return 0; | |
1964 | } | |
1965 | ||
cdddbdbc DW |
1966 | static int load_super_imsm_all(struct supertype *st, int fd, void **sbp, |
1967 | char *devname, int keep_fd) | |
1968 | { | |
1969 | struct mdinfo *sra; | |
1970 | struct intel_super *super; | |
1971 | struct mdinfo *sd, *best = NULL; | |
1972 | __u32 bestgen = 0; | |
1973 | __u32 gen; | |
1974 | char nm[20]; | |
1975 | int dfd; | |
1976 | int rv; | |
db575f3b DW |
1977 | int devnum = fd2devnum(fd); |
1978 | int retry; | |
dab4a513 | 1979 | enum sysfs_read_flags flags; |
cdddbdbc | 1980 | |
dab4a513 DW |
1981 | flags = GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE; |
1982 | if (mdmon_running(devnum)) | |
1983 | flags |= SKIP_GONE_DEVS; | |
1984 | ||
1985 | /* check if 'fd' an opened container */ | |
1986 | sra = sysfs_read(fd, 0, flags); | |
cdddbdbc DW |
1987 | if (!sra) |
1988 | return 1; | |
1989 | ||
1990 | if (sra->array.major_version != -1 || | |
1991 | sra->array.minor_version != -2 || | |
1992 | strcmp(sra->text_version, "imsm") != 0) | |
1993 | return 1; | |
1994 | ||
c2c087e6 | 1995 | super = alloc_super(0); |
cdddbdbc DW |
1996 | if (!super) |
1997 | return 1; | |
1998 | ||
d23fe947 | 1999 | /* find the most up to date disk in this array, skipping spares */ |
cdddbdbc DW |
2000 | for (sd = sra->devs; sd; sd = sd->next) { |
2001 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
2002 | dfd = dev_open(nm, keep_fd ? O_RDWR : O_RDONLY); | |
be2c0e38 | 2003 | if (dfd < 0) { |
cdddbdbc DW |
2004 | free_imsm(super); |
2005 | return 2; | |
2006 | } | |
2007 | rv = load_imsm_mpb(dfd, super, NULL); | |
db575f3b DW |
2008 | |
2009 | /* retry the load if we might have raced against mdmon */ | |
2010 | if (rv == 3 && mdmon_running(devnum)) | |
2011 | for (retry = 0; retry < 3; retry++) { | |
2012 | usleep(3000); | |
2013 | rv = load_imsm_mpb(dfd, super, NULL); | |
2014 | if (rv != 3) | |
2015 | break; | |
2016 | } | |
cdddbdbc DW |
2017 | if (!keep_fd) |
2018 | close(dfd); | |
2019 | if (rv == 0) { | |
d23fe947 DW |
2020 | if (super->anchor->num_raid_devs == 0) |
2021 | gen = 0; | |
2022 | else | |
2023 | gen = __le32_to_cpu(super->anchor->generation_num); | |
cdddbdbc DW |
2024 | if (!best || gen > bestgen) { |
2025 | bestgen = gen; | |
2026 | best = sd; | |
2027 | } | |
2028 | } else { | |
2029 | free_imsm(super); | |
db575f3b | 2030 | return rv; |
cdddbdbc DW |
2031 | } |
2032 | } | |
2033 | ||
2034 | if (!best) { | |
2035 | free_imsm(super); | |
2036 | return 1; | |
2037 | } | |
2038 | ||
2039 | /* load the most up to date anchor */ | |
2040 | sprintf(nm, "%d:%d", best->disk.major, best->disk.minor); | |
2041 | dfd = dev_open(nm, O_RDONLY); | |
be2c0e38 | 2042 | if (dfd < 0) { |
cdddbdbc DW |
2043 | free_imsm(super); |
2044 | return 1; | |
2045 | } | |
2046 | rv = load_imsm_mpb(dfd, super, NULL); | |
2047 | close(dfd); | |
2048 | if (rv != 0) { | |
2049 | free_imsm(super); | |
2050 | return 2; | |
2051 | } | |
2052 | ||
d23fe947 | 2053 | /* re-parse the disk list with the current anchor */ |
cdddbdbc DW |
2054 | for (sd = sra->devs ; sd ; sd = sd->next) { |
2055 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
2056 | dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY); | |
be2c0e38 | 2057 | if (dfd < 0) { |
cdddbdbc DW |
2058 | free_imsm(super); |
2059 | return 2; | |
2060 | } | |
2061 | load_imsm_disk(dfd, super, NULL, keep_fd); | |
2062 | if (!keep_fd) | |
2063 | close(dfd); | |
2064 | } | |
2065 | ||
47ee5a45 DW |
2066 | |
2067 | if (find_missing(super) != 0) { | |
2068 | free_imsm(super); | |
2069 | return 2; | |
2070 | } | |
2071 | ||
f7e7067b | 2072 | if (st->subarray[0]) { |
949c47a0 | 2073 | if (atoi(st->subarray) <= super->anchor->num_raid_devs) |
bf5a934a DW |
2074 | super->current_vol = atoi(st->subarray); |
2075 | else | |
2076 | return 1; | |
f7e7067b NB |
2077 | } |
2078 | ||
cdddbdbc | 2079 | *sbp = super; |
db575f3b | 2080 | st->container_dev = devnum; |
cdddbdbc | 2081 | if (st->ss == NULL) { |
bf5a934a | 2082 | st->ss = &super_imsm; |
cdddbdbc DW |
2083 | st->minor_version = 0; |
2084 | st->max_devs = IMSM_MAX_DEVICES; | |
2085 | } | |
352452c3 | 2086 | st->loaded_container = 1; |
cdddbdbc DW |
2087 | |
2088 | return 0; | |
2089 | } | |
2090 | #endif | |
2091 | ||
2092 | static int load_super_imsm(struct supertype *st, int fd, char *devname) | |
2093 | { | |
2094 | struct intel_super *super; | |
2095 | int rv; | |
2096 | ||
2097 | #ifndef MDASSEMBLE | |
3dbccbcf | 2098 | if (load_super_imsm_all(st, fd, &st->sb, devname, 1) == 0) |
cdddbdbc DW |
2099 | return 0; |
2100 | #endif | |
f7e7067b NB |
2101 | if (st->subarray[0]) |
2102 | return 1; /* FIXME */ | |
cdddbdbc | 2103 | |
c2c087e6 | 2104 | super = alloc_super(0); |
cdddbdbc DW |
2105 | if (!super) { |
2106 | fprintf(stderr, | |
2107 | Name ": malloc of %zu failed.\n", | |
2108 | sizeof(*super)); | |
2109 | return 1; | |
2110 | } | |
2111 | ||
2112 | rv = load_imsm_mpb(fd, super, devname); | |
2113 | ||
2114 | if (rv) { | |
2115 | if (devname) | |
2116 | fprintf(stderr, | |
2117 | Name ": Failed to load all information " | |
2118 | "sections on %s\n", devname); | |
2119 | free_imsm(super); | |
2120 | return rv; | |
2121 | } | |
2122 | ||
2123 | st->sb = super; | |
2124 | if (st->ss == NULL) { | |
2125 | st->ss = &super_imsm; | |
2126 | st->minor_version = 0; | |
2127 | st->max_devs = IMSM_MAX_DEVICES; | |
2128 | } | |
352452c3 | 2129 | st->loaded_container = 0; |
cdddbdbc DW |
2130 | |
2131 | return 0; | |
2132 | } | |
2133 | ||
ef6ffade DW |
2134 | static __u16 info_to_blocks_per_strip(mdu_array_info_t *info) |
2135 | { | |
2136 | if (info->level == 1) | |
2137 | return 128; | |
2138 | return info->chunk_size >> 9; | |
2139 | } | |
2140 | ||
2141 | static __u32 info_to_num_data_stripes(mdu_array_info_t *info) | |
2142 | { | |
2143 | __u32 num_stripes; | |
2144 | ||
2145 | num_stripes = (info->size * 2) / info_to_blocks_per_strip(info); | |
2146 | if (info->level == 1) | |
2147 | num_stripes /= 2; | |
2148 | ||
2149 | return num_stripes; | |
2150 | } | |
2151 | ||
fcfd9599 DW |
2152 | static __u32 info_to_blocks_per_member(mdu_array_info_t *info) |
2153 | { | |
4025c288 DW |
2154 | if (info->level == 1) |
2155 | return info->size * 2; | |
2156 | else | |
2157 | return (info->size * 2) & ~(info_to_blocks_per_strip(info) - 1); | |
fcfd9599 DW |
2158 | } |
2159 | ||
4d1313e9 DW |
2160 | static void imsm_update_version_info(struct intel_super *super) |
2161 | { | |
2162 | /* update the version and attributes */ | |
2163 | struct imsm_super *mpb = super->anchor; | |
2164 | char *version; | |
2165 | struct imsm_dev *dev; | |
2166 | struct imsm_map *map; | |
2167 | int i; | |
2168 | ||
2169 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
2170 | dev = get_imsm_dev(super, i); | |
2171 | map = get_imsm_map(dev, 0); | |
2172 | if (__le32_to_cpu(dev->size_high) > 0) | |
2173 | mpb->attributes |= MPB_ATTRIB_2TB; | |
2174 | ||
2175 | /* FIXME detect when an array spans a port multiplier */ | |
2176 | #if 0 | |
2177 | mpb->attributes |= MPB_ATTRIB_PM; | |
2178 | #endif | |
2179 | ||
2180 | if (mpb->num_raid_devs > 1 || | |
2181 | mpb->attributes != MPB_ATTRIB_CHECKSUM_VERIFY) { | |
2182 | version = MPB_VERSION_ATTRIBS; | |
2183 | switch (get_imsm_raid_level(map)) { | |
2184 | case 0: mpb->attributes |= MPB_ATTRIB_RAID0; break; | |
2185 | case 1: mpb->attributes |= MPB_ATTRIB_RAID1; break; | |
2186 | case 10: mpb->attributes |= MPB_ATTRIB_RAID10; break; | |
2187 | case 5: mpb->attributes |= MPB_ATTRIB_RAID5; break; | |
2188 | } | |
2189 | } else { | |
2190 | if (map->num_members >= 5) | |
2191 | version = MPB_VERSION_5OR6_DISK_ARRAY; | |
2192 | else if (dev->status == DEV_CLONE_N_GO) | |
2193 | version = MPB_VERSION_CNG; | |
2194 | else if (get_imsm_raid_level(map) == 5) | |
2195 | version = MPB_VERSION_RAID5; | |
2196 | else if (map->num_members >= 3) | |
2197 | version = MPB_VERSION_3OR4_DISK_ARRAY; | |
2198 | else if (get_imsm_raid_level(map) == 1) | |
2199 | version = MPB_VERSION_RAID1; | |
2200 | else | |
2201 | version = MPB_VERSION_RAID0; | |
2202 | } | |
2203 | strcpy(((char *) mpb->sig) + strlen(MPB_SIGNATURE), version); | |
2204 | } | |
2205 | } | |
2206 | ||
8b353278 DW |
2207 | static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info, |
2208 | unsigned long long size, char *name, | |
2209 | char *homehost, int *uuid) | |
cdddbdbc | 2210 | { |
c2c087e6 DW |
2211 | /* We are creating a volume inside a pre-existing container. |
2212 | * so st->sb is already set. | |
2213 | */ | |
2214 | struct intel_super *super = st->sb; | |
949c47a0 | 2215 | struct imsm_super *mpb = super->anchor; |
ba2de7ba | 2216 | struct intel_dev *dv; |
c2c087e6 DW |
2217 | struct imsm_dev *dev; |
2218 | struct imsm_vol *vol; | |
2219 | struct imsm_map *map; | |
2220 | int idx = mpb->num_raid_devs; | |
2221 | int i; | |
2222 | unsigned long long array_blocks; | |
2c092cad | 2223 | size_t size_old, size_new; |
cdddbdbc | 2224 | |
88c32bb1 | 2225 | if (super->orom && mpb->num_raid_devs >= super->orom->vpa) { |
c2c087e6 | 2226 | fprintf(stderr, Name": This imsm-container already has the " |
88c32bb1 | 2227 | "maximum of %d volumes\n", super->orom->vpa); |
c2c087e6 DW |
2228 | return 0; |
2229 | } | |
2230 | ||
2c092cad DW |
2231 | /* ensure the mpb is large enough for the new data */ |
2232 | size_old = __le32_to_cpu(mpb->mpb_size); | |
2233 | size_new = disks_to_mpb_size(info->nr_disks); | |
2234 | if (size_new > size_old) { | |
2235 | void *mpb_new; | |
2236 | size_t size_round = ROUND_UP(size_new, 512); | |
2237 | ||
2238 | if (posix_memalign(&mpb_new, 512, size_round) != 0) { | |
2239 | fprintf(stderr, Name": could not allocate new mpb\n"); | |
2240 | return 0; | |
2241 | } | |
2242 | memcpy(mpb_new, mpb, size_old); | |
2243 | free(mpb); | |
2244 | mpb = mpb_new; | |
949c47a0 | 2245 | super->anchor = mpb_new; |
2c092cad DW |
2246 | mpb->mpb_size = __cpu_to_le32(size_new); |
2247 | memset(mpb_new + size_old, 0, size_round - size_old); | |
2248 | } | |
bf5a934a | 2249 | super->current_vol = idx; |
d23fe947 DW |
2250 | /* when creating the first raid device in this container set num_disks |
2251 | * to zero, i.e. delete this spare and add raid member devices in | |
2252 | * add_to_super_imsm_volume() | |
2253 | */ | |
2254 | if (super->current_vol == 0) | |
2255 | mpb->num_disks = 0; | |
5a038140 DW |
2256 | |
2257 | for (i = 0; i < super->current_vol; i++) { | |
2258 | dev = get_imsm_dev(super, i); | |
2259 | if (strncmp((char *) dev->volume, name, | |
2260 | MAX_RAID_SERIAL_LEN) == 0) { | |
2261 | fprintf(stderr, Name": '%s' is already defined for this container\n", | |
2262 | name); | |
2263 | return 0; | |
2264 | } | |
2265 | } | |
2266 | ||
bf5a934a | 2267 | sprintf(st->subarray, "%d", idx); |
ba2de7ba DW |
2268 | dv = malloc(sizeof(*dv)); |
2269 | if (!dv) { | |
2270 | fprintf(stderr, Name ": failed to allocate device list entry\n"); | |
2271 | return 0; | |
2272 | } | |
949c47a0 DW |
2273 | dev = malloc(sizeof(*dev) + sizeof(__u32) * (info->raid_disks - 1)); |
2274 | if (!dev) { | |
ba2de7ba | 2275 | free(dv); |
949c47a0 DW |
2276 | fprintf(stderr, Name": could not allocate raid device\n"); |
2277 | return 0; | |
2278 | } | |
c2c087e6 | 2279 | strncpy((char *) dev->volume, name, MAX_RAID_SERIAL_LEN); |
03bcbc65 DW |
2280 | if (info->level == 1) |
2281 | array_blocks = info_to_blocks_per_member(info); | |
2282 | else | |
2283 | array_blocks = calc_array_size(info->level, info->raid_disks, | |
2284 | info->layout, info->chunk_size, | |
2285 | info->size*2); | |
c2c087e6 DW |
2286 | dev->size_low = __cpu_to_le32((__u32) array_blocks); |
2287 | dev->size_high = __cpu_to_le32((__u32) (array_blocks >> 32)); | |
2288 | dev->status = __cpu_to_le32(0); | |
2289 | dev->reserved_blocks = __cpu_to_le32(0); | |
2290 | vol = &dev->vol; | |
2291 | vol->migr_state = 0; | |
e3bba0e0 | 2292 | vol->migr_type = MIGR_INIT; |
c2c087e6 | 2293 | vol->dirty = 0; |
f8f603f1 | 2294 | vol->curr_migr_unit = 0; |
a965f303 | 2295 | map = get_imsm_map(dev, 0); |
0dcecb2e | 2296 | map->pba_of_lba0 = __cpu_to_le32(super->create_offset); |
fcfd9599 | 2297 | map->blocks_per_member = __cpu_to_le32(info_to_blocks_per_member(info)); |
ef6ffade DW |
2298 | map->blocks_per_strip = __cpu_to_le16(info_to_blocks_per_strip(info)); |
2299 | map->num_data_stripes = __cpu_to_le32(info_to_num_data_stripes(info)); | |
0556e1a2 | 2300 | map->failed_disk_num = ~0; |
c2c087e6 DW |
2301 | map->map_state = info->level ? IMSM_T_STATE_UNINITIALIZED : |
2302 | IMSM_T_STATE_NORMAL; | |
ef6ffade DW |
2303 | |
2304 | if (info->level == 1 && info->raid_disks > 2) { | |
2305 | fprintf(stderr, Name": imsm does not support more than 2 disks" | |
2306 | "in a raid1 volume\n"); | |
2307 | return 0; | |
2308 | } | |
4d1313e9 | 2309 | if (info->level == 10) { |
c2c087e6 | 2310 | map->raid_level = 1; |
4d1313e9 DW |
2311 | map->num_domains = info->raid_disks / 2; |
2312 | } else { | |
c2c087e6 | 2313 | map->raid_level = info->level; |
4d1313e9 DW |
2314 | map->num_domains = !!map->raid_level; |
2315 | } | |
ef6ffade | 2316 | |
c2c087e6 DW |
2317 | map->num_members = info->raid_disks; |
2318 | for (i = 0; i < map->num_members; i++) { | |
2319 | /* initialized in add_to_super */ | |
be73972f | 2320 | set_imsm_ord_tbl_ent(map, i, 0); |
c2c087e6 | 2321 | } |
949c47a0 | 2322 | mpb->num_raid_devs++; |
ba2de7ba DW |
2323 | |
2324 | dv->dev = dev; | |
2325 | dv->index = super->current_vol; | |
2326 | dv->next = super->devlist; | |
2327 | super->devlist = dv; | |
c2c087e6 | 2328 | |
4d1313e9 DW |
2329 | imsm_update_version_info(super); |
2330 | ||
c2c087e6 | 2331 | return 1; |
cdddbdbc DW |
2332 | } |
2333 | ||
bf5a934a DW |
2334 | static int init_super_imsm(struct supertype *st, mdu_array_info_t *info, |
2335 | unsigned long long size, char *name, | |
2336 | char *homehost, int *uuid) | |
2337 | { | |
2338 | /* This is primarily called by Create when creating a new array. | |
2339 | * We will then get add_to_super called for each component, and then | |
2340 | * write_init_super called to write it out to each device. | |
2341 | * For IMSM, Create can create on fresh devices or on a pre-existing | |
2342 | * array. | |
2343 | * To create on a pre-existing array a different method will be called. | |
2344 | * This one is just for fresh drives. | |
2345 | */ | |
2346 | struct intel_super *super; | |
2347 | struct imsm_super *mpb; | |
2348 | size_t mpb_size; | |
4d1313e9 | 2349 | char *version; |
bf5a934a DW |
2350 | |
2351 | if (!info) { | |
2352 | st->sb = NULL; | |
2353 | return 0; | |
2354 | } | |
2355 | if (st->sb) | |
2356 | return init_super_imsm_volume(st, info, size, name, homehost, | |
2357 | uuid); | |
2358 | ||
2359 | super = alloc_super(1); | |
2360 | if (!super) | |
2361 | return 0; | |
2362 | mpb_size = disks_to_mpb_size(info->nr_disks); | |
ef649044 | 2363 | if (posix_memalign(&super->buf, 512, mpb_size) != 0) { |
bf5a934a DW |
2364 | free(super); |
2365 | return 0; | |
2366 | } | |
ef649044 | 2367 | mpb = super->buf; |
bf5a934a DW |
2368 | memset(mpb, 0, mpb_size); |
2369 | ||
4d1313e9 DW |
2370 | mpb->attributes = MPB_ATTRIB_CHECKSUM_VERIFY; |
2371 | ||
2372 | version = (char *) mpb->sig; | |
2373 | strcpy(version, MPB_SIGNATURE); | |
2374 | version += strlen(MPB_SIGNATURE); | |
2375 | strcpy(version, MPB_VERSION_RAID0); | |
bf5a934a DW |
2376 | mpb->mpb_size = mpb_size; |
2377 | ||
bf5a934a DW |
2378 | st->sb = super; |
2379 | return 1; | |
2380 | } | |
2381 | ||
0e600426 | 2382 | #ifndef MDASSEMBLE |
f20c3968 | 2383 | static int add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk, |
bf5a934a DW |
2384 | int fd, char *devname) |
2385 | { | |
2386 | struct intel_super *super = st->sb; | |
d23fe947 | 2387 | struct imsm_super *mpb = super->anchor; |
bf5a934a DW |
2388 | struct dl *dl; |
2389 | struct imsm_dev *dev; | |
2390 | struct imsm_map *map; | |
bf5a934a | 2391 | |
949c47a0 | 2392 | dev = get_imsm_dev(super, super->current_vol); |
a965f303 | 2393 | map = get_imsm_map(dev, 0); |
bf5a934a | 2394 | |
208933a7 N |
2395 | if (! (dk->state & (1<<MD_DISK_SYNC))) { |
2396 | fprintf(stderr, Name ": %s: Cannot add spare devices to IMSM volume\n", | |
2397 | devname); | |
2398 | return 1; | |
2399 | } | |
2400 | ||
bf5a934a DW |
2401 | for (dl = super->disks; dl ; dl = dl->next) |
2402 | if (dl->major == dk->major && | |
2403 | dl->minor == dk->minor) | |
2404 | break; | |
d23fe947 | 2405 | |
208933a7 N |
2406 | if (!dl) { |
2407 | fprintf(stderr, Name ": %s is not a member of the same container\n", devname); | |
f20c3968 | 2408 | return 1; |
208933a7 | 2409 | } |
bf5a934a | 2410 | |
d23fe947 DW |
2411 | /* add a pristine spare to the metadata */ |
2412 | if (dl->index < 0) { | |
2413 | dl->index = super->anchor->num_disks; | |
2414 | super->anchor->num_disks++; | |
2415 | } | |
be73972f | 2416 | set_imsm_ord_tbl_ent(map, dk->number, dl->index); |
f2f27e63 | 2417 | dl->disk.status = CONFIGURED_DISK | USABLE_DISK; |
d23fe947 DW |
2418 | |
2419 | /* if we are creating the first raid device update the family number */ | |
2420 | if (super->current_vol == 0) { | |
2421 | __u32 sum; | |
2422 | struct imsm_dev *_dev = __get_imsm_dev(mpb, 0); | |
2423 | struct imsm_disk *_disk = __get_imsm_disk(mpb, dl->index); | |
2424 | ||
2425 | *_dev = *dev; | |
2426 | *_disk = dl->disk; | |
2427 | sum = __gen_imsm_checksum(mpb); | |
2428 | mpb->family_num = __cpu_to_le32(sum); | |
2429 | } | |
f20c3968 DW |
2430 | |
2431 | return 0; | |
bf5a934a DW |
2432 | } |
2433 | ||
f20c3968 | 2434 | static int add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk, |
cdddbdbc DW |
2435 | int fd, char *devname) |
2436 | { | |
c2c087e6 | 2437 | struct intel_super *super = st->sb; |
c2c087e6 DW |
2438 | struct dl *dd; |
2439 | unsigned long long size; | |
f2f27e63 | 2440 | __u32 id; |
c2c087e6 DW |
2441 | int rv; |
2442 | struct stat stb; | |
2443 | ||
88c32bb1 DW |
2444 | /* if we are on an RAID enabled platform check that the disk is |
2445 | * attached to the raid controller | |
2446 | */ | |
2447 | if (super->hba && !disk_attached_to_hba(fd, super->hba)) { | |
2448 | fprintf(stderr, | |
2449 | Name ": %s is not attached to the raid controller: %s\n", | |
2450 | devname ? : "disk", super->hba); | |
2451 | return 1; | |
2452 | } | |
2453 | ||
f20c3968 DW |
2454 | if (super->current_vol >= 0) |
2455 | return add_to_super_imsm_volume(st, dk, fd, devname); | |
bf5a934a | 2456 | |
c2c087e6 DW |
2457 | fstat(fd, &stb); |
2458 | dd = malloc(sizeof(*dd)); | |
b9f594fe | 2459 | if (!dd) { |
c2c087e6 DW |
2460 | fprintf(stderr, |
2461 | Name ": malloc failed %s:%d.\n", __func__, __LINE__); | |
f20c3968 | 2462 | return 1; |
c2c087e6 DW |
2463 | } |
2464 | memset(dd, 0, sizeof(*dd)); | |
2465 | dd->major = major(stb.st_rdev); | |
2466 | dd->minor = minor(stb.st_rdev); | |
b9f594fe | 2467 | dd->index = -1; |
c2c087e6 | 2468 | dd->devname = devname ? strdup(devname) : NULL; |
c2c087e6 | 2469 | dd->fd = fd; |
689c9bf3 | 2470 | dd->e = NULL; |
c2c087e6 DW |
2471 | rv = imsm_read_serial(fd, devname, dd->serial); |
2472 | if (rv) { | |
2473 | fprintf(stderr, | |
0030e8d6 | 2474 | Name ": failed to retrieve scsi serial, aborting\n"); |
949c47a0 | 2475 | free(dd); |
0030e8d6 | 2476 | abort(); |
c2c087e6 DW |
2477 | } |
2478 | ||
c2c087e6 DW |
2479 | get_dev_size(fd, NULL, &size); |
2480 | size /= 512; | |
1f24f035 | 2481 | serialcpy(dd->disk.serial, dd->serial); |
b9f594fe | 2482 | dd->disk.total_blocks = __cpu_to_le32(size); |
f2f27e63 | 2483 | dd->disk.status = USABLE_DISK | SPARE_DISK; |
c2c087e6 | 2484 | if (sysfs_disk_to_scsi_id(fd, &id) == 0) |
b9f594fe | 2485 | dd->disk.scsi_id = __cpu_to_le32(id); |
c2c087e6 | 2486 | else |
b9f594fe | 2487 | dd->disk.scsi_id = __cpu_to_le32(0); |
43dad3d6 DW |
2488 | |
2489 | if (st->update_tail) { | |
2490 | dd->next = super->add; | |
2491 | super->add = dd; | |
2492 | } else { | |
2493 | dd->next = super->disks; | |
2494 | super->disks = dd; | |
2495 | } | |
f20c3968 DW |
2496 | |
2497 | return 0; | |
cdddbdbc DW |
2498 | } |
2499 | ||
c2c087e6 DW |
2500 | static int store_imsm_mpb(int fd, struct intel_super *super); |
2501 | ||
d23fe947 DW |
2502 | /* spare records have their own family number and do not have any defined raid |
2503 | * devices | |
2504 | */ | |
2505 | static int write_super_imsm_spares(struct intel_super *super, int doclose) | |
2506 | { | |
2507 | struct imsm_super mpb_save; | |
2508 | struct imsm_super *mpb = super->anchor; | |
2509 | __u32 sum; | |
2510 | struct dl *d; | |
2511 | ||
2512 | mpb_save = *mpb; | |
2513 | mpb->num_raid_devs = 0; | |
2514 | mpb->num_disks = 1; | |
2515 | mpb->mpb_size = sizeof(struct imsm_super); | |
2516 | mpb->generation_num = __cpu_to_le32(1UL); | |
2517 | ||
2518 | for (d = super->disks; d; d = d->next) { | |
8796fdc4 | 2519 | if (d->index != -1) |
d23fe947 DW |
2520 | continue; |
2521 | ||
2522 | mpb->disk[0] = d->disk; | |
2523 | sum = __gen_imsm_checksum(mpb); | |
2524 | mpb->family_num = __cpu_to_le32(sum); | |
2525 | sum = __gen_imsm_checksum(mpb); | |
2526 | mpb->check_sum = __cpu_to_le32(sum); | |
2527 | ||
2528 | if (store_imsm_mpb(d->fd, super)) { | |
2529 | fprintf(stderr, "%s: failed for device %d:%d %s\n", | |
2530 | __func__, d->major, d->minor, strerror(errno)); | |
2531 | *mpb = mpb_save; | |
e74255d9 | 2532 | return 1; |
d23fe947 DW |
2533 | } |
2534 | if (doclose) { | |
2535 | close(d->fd); | |
2536 | d->fd = -1; | |
2537 | } | |
2538 | } | |
2539 | ||
2540 | *mpb = mpb_save; | |
e74255d9 | 2541 | return 0; |
d23fe947 DW |
2542 | } |
2543 | ||
c2c087e6 | 2544 | static int write_super_imsm(struct intel_super *super, int doclose) |
cdddbdbc | 2545 | { |
949c47a0 | 2546 | struct imsm_super *mpb = super->anchor; |
c2c087e6 DW |
2547 | struct dl *d; |
2548 | __u32 generation; | |
2549 | __u32 sum; | |
d23fe947 | 2550 | int spares = 0; |
949c47a0 | 2551 | int i; |
a48ac0a8 | 2552 | __u32 mpb_size = sizeof(struct imsm_super) - sizeof(struct imsm_disk); |
cdddbdbc | 2553 | |
c2c087e6 DW |
2554 | /* 'generation' is incremented everytime the metadata is written */ |
2555 | generation = __le32_to_cpu(mpb->generation_num); | |
2556 | generation++; | |
2557 | mpb->generation_num = __cpu_to_le32(generation); | |
2558 | ||
1ee1e9fc | 2559 | mpb_size += sizeof(struct imsm_disk) * mpb->num_disks; |
d23fe947 | 2560 | for (d = super->disks; d; d = d->next) { |
8796fdc4 | 2561 | if (d->index == -1) |
d23fe947 | 2562 | spares++; |
1ee1e9fc | 2563 | else |
d23fe947 | 2564 | mpb->disk[d->index] = d->disk; |
d23fe947 | 2565 | } |
47ee5a45 DW |
2566 | for (d = super->missing; d; d = d->next) |
2567 | mpb->disk[d->index] = d->disk; | |
b9f594fe | 2568 | |
949c47a0 DW |
2569 | for (i = 0; i < mpb->num_raid_devs; i++) { |
2570 | struct imsm_dev *dev = __get_imsm_dev(mpb, i); | |
2571 | ||
ba2de7ba | 2572 | imsm_copy_dev(dev, get_imsm_dev(super, i)); |
a48ac0a8 | 2573 | mpb_size += sizeof_imsm_dev(dev, 0); |
949c47a0 | 2574 | } |
a48ac0a8 DW |
2575 | mpb_size += __le32_to_cpu(mpb->bbm_log_size); |
2576 | mpb->mpb_size = __cpu_to_le32(mpb_size); | |
949c47a0 | 2577 | |
c2c087e6 | 2578 | /* recalculate checksum */ |
949c47a0 | 2579 | sum = __gen_imsm_checksum(mpb); |
c2c087e6 DW |
2580 | mpb->check_sum = __cpu_to_le32(sum); |
2581 | ||
d23fe947 | 2582 | /* write the mpb for disks that compose raid devices */ |
c2c087e6 | 2583 | for (d = super->disks; d ; d = d->next) { |
d23fe947 DW |
2584 | if (d->index < 0) |
2585 | continue; | |
8796fdc4 | 2586 | if (store_imsm_mpb(d->fd, super)) |
c2c087e6 DW |
2587 | fprintf(stderr, "%s: failed for device %d:%d %s\n", |
2588 | __func__, d->major, d->minor, strerror(errno)); | |
c2c087e6 DW |
2589 | if (doclose) { |
2590 | close(d->fd); | |
2591 | d->fd = -1; | |
2592 | } | |
2593 | } | |
2594 | ||
d23fe947 DW |
2595 | if (spares) |
2596 | return write_super_imsm_spares(super, doclose); | |
2597 | ||
e74255d9 | 2598 | return 0; |
c2c087e6 DW |
2599 | } |
2600 | ||
0e600426 | 2601 | |
43dad3d6 DW |
2602 | static int create_array(struct supertype *st) |
2603 | { | |
2604 | size_t len; | |
2605 | struct imsm_update_create_array *u; | |
2606 | struct intel_super *super = st->sb; | |
2607 | struct imsm_dev *dev = get_imsm_dev(super, super->current_vol); | |
54c2c1ea DW |
2608 | struct imsm_map *map = get_imsm_map(dev, 0); |
2609 | struct disk_info *inf; | |
2610 | struct imsm_disk *disk; | |
2611 | int i; | |
2612 | int idx; | |
43dad3d6 | 2613 | |
54c2c1ea DW |
2614 | len = sizeof(*u) - sizeof(*dev) + sizeof_imsm_dev(dev, 0) + |
2615 | sizeof(*inf) * map->num_members; | |
43dad3d6 DW |
2616 | u = malloc(len); |
2617 | if (!u) { | |
2618 | fprintf(stderr, "%s: failed to allocate update buffer\n", | |
2619 | __func__); | |
2620 | return 1; | |
2621 | } | |
2622 | ||
2623 | u->type = update_create_array; | |
2624 | u->dev_idx = super->current_vol; | |
2625 | imsm_copy_dev(&u->dev, dev); | |
54c2c1ea DW |
2626 | inf = get_disk_info(u); |
2627 | for (i = 0; i < map->num_members; i++) { | |
2628 | idx = get_imsm_disk_idx(dev, i); | |
2629 | disk = get_imsm_disk(super, idx); | |
2630 | serialcpy(inf[i].serial, disk->serial); | |
2631 | } | |
43dad3d6 DW |
2632 | append_metadata_update(st, u, len); |
2633 | ||
2634 | return 0; | |
2635 | } | |
2636 | ||
7801ac20 | 2637 | static int _add_disk(struct supertype *st) |
43dad3d6 DW |
2638 | { |
2639 | struct intel_super *super = st->sb; | |
2640 | size_t len; | |
2641 | struct imsm_update_add_disk *u; | |
2642 | ||
2643 | if (!super->add) | |
2644 | return 0; | |
2645 | ||
2646 | len = sizeof(*u); | |
2647 | u = malloc(len); | |
2648 | if (!u) { | |
2649 | fprintf(stderr, "%s: failed to allocate update buffer\n", | |
2650 | __func__); | |
2651 | return 1; | |
2652 | } | |
2653 | ||
2654 | u->type = update_add_disk; | |
2655 | append_metadata_update(st, u, len); | |
2656 | ||
2657 | return 0; | |
2658 | } | |
2659 | ||
c2c087e6 DW |
2660 | static int write_init_super_imsm(struct supertype *st) |
2661 | { | |
8273f55e | 2662 | if (st->update_tail) { |
43dad3d6 DW |
2663 | /* queue the recently created array / added disk |
2664 | * as a metadata update */ | |
8273f55e | 2665 | struct intel_super *super = st->sb; |
8273f55e | 2666 | struct dl *d; |
43dad3d6 | 2667 | int rv; |
8273f55e | 2668 | |
43dad3d6 DW |
2669 | /* determine if we are creating a volume or adding a disk */ |
2670 | if (super->current_vol < 0) { | |
2671 | /* in the add disk case we are running in mdmon | |
2672 | * context, so don't close fd's | |
2673 | */ | |
7801ac20 | 2674 | return _add_disk(st); |
43dad3d6 DW |
2675 | } else |
2676 | rv = create_array(st); | |
8273f55e DW |
2677 | |
2678 | for (d = super->disks; d ; d = d->next) { | |
2679 | close(d->fd); | |
2680 | d->fd = -1; | |
2681 | } | |
2682 | ||
43dad3d6 | 2683 | return rv; |
8273f55e DW |
2684 | } else |
2685 | return write_super_imsm(st->sb, 1); | |
cdddbdbc | 2686 | } |
0e600426 | 2687 | #endif |
cdddbdbc DW |
2688 | |
2689 | static int store_zero_imsm(struct supertype *st, int fd) | |
2690 | { | |
551c80c1 | 2691 | unsigned long long dsize; |
6416d527 | 2692 | void *buf; |
551c80c1 DW |
2693 | |
2694 | get_dev_size(fd, NULL, &dsize); | |
2695 | ||
2696 | /* first block is stored on second to last sector of the disk */ | |
2697 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
2698 | return 1; | |
2699 | ||
ad97895e DW |
2700 | if (posix_memalign(&buf, 512, 512) != 0) |
2701 | return 1; | |
2702 | ||
eb7ea463 DW |
2703 | memset(buf, 0, 512); |
2704 | if (write(fd, buf, 512) != 512) | |
551c80c1 | 2705 | return 1; |
cdddbdbc DW |
2706 | return 0; |
2707 | } | |
2708 | ||
0e600426 N |
2709 | static int imsm_bbm_log_size(struct imsm_super *mpb) |
2710 | { | |
2711 | return __le32_to_cpu(mpb->bbm_log_size); | |
2712 | } | |
2713 | ||
2714 | #ifndef MDASSEMBLE | |
cdddbdbc DW |
2715 | static int validate_geometry_imsm_container(struct supertype *st, int level, |
2716 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 2717 | unsigned long long size, char *dev, |
2c514b71 NB |
2718 | unsigned long long *freesize, |
2719 | int verbose) | |
cdddbdbc | 2720 | { |
c2c087e6 DW |
2721 | int fd; |
2722 | unsigned long long ldsize; | |
88c32bb1 | 2723 | const struct imsm_orom *orom; |
cdddbdbc | 2724 | |
c2c087e6 DW |
2725 | if (level != LEVEL_CONTAINER) |
2726 | return 0; | |
2727 | if (!dev) | |
2728 | return 1; | |
2729 | ||
88c32bb1 DW |
2730 | if (check_env("IMSM_NO_PLATFORM")) |
2731 | orom = NULL; | |
2732 | else | |
2733 | orom = find_imsm_orom(); | |
2734 | if (orom && raiddisks > orom->tds) { | |
2735 | if (verbose) | |
2736 | fprintf(stderr, Name ": %d exceeds maximum number of" | |
2737 | " platform supported disks: %d\n", | |
2738 | raiddisks, orom->tds); | |
2739 | return 0; | |
2740 | } | |
2741 | ||
c2c087e6 DW |
2742 | fd = open(dev, O_RDONLY|O_EXCL, 0); |
2743 | if (fd < 0) { | |
2c514b71 NB |
2744 | if (verbose) |
2745 | fprintf(stderr, Name ": imsm: Cannot open %s: %s\n", | |
2746 | dev, strerror(errno)); | |
c2c087e6 DW |
2747 | return 0; |
2748 | } | |
2749 | if (!get_dev_size(fd, dev, &ldsize)) { | |
2750 | close(fd); | |
2751 | return 0; | |
2752 | } | |
2753 | close(fd); | |
2754 | ||
2755 | *freesize = avail_size_imsm(st, ldsize >> 9); | |
2756 | ||
2757 | return 1; | |
cdddbdbc DW |
2758 | } |
2759 | ||
0dcecb2e DW |
2760 | static unsigned long long find_size(struct extent *e, int *idx, int num_extents) |
2761 | { | |
2762 | const unsigned long long base_start = e[*idx].start; | |
2763 | unsigned long long end = base_start + e[*idx].size; | |
2764 | int i; | |
2765 | ||
2766 | if (base_start == end) | |
2767 | return 0; | |
2768 | ||
2769 | *idx = *idx + 1; | |
2770 | for (i = *idx; i < num_extents; i++) { | |
2771 | /* extend overlapping extents */ | |
2772 | if (e[i].start >= base_start && | |
2773 | e[i].start <= end) { | |
2774 | if (e[i].size == 0) | |
2775 | return 0; | |
2776 | if (e[i].start + e[i].size > end) | |
2777 | end = e[i].start + e[i].size; | |
2778 | } else if (e[i].start > end) { | |
2779 | *idx = i; | |
2780 | break; | |
2781 | } | |
2782 | } | |
2783 | ||
2784 | return end - base_start; | |
2785 | } | |
2786 | ||
2787 | static unsigned long long merge_extents(struct intel_super *super, int sum_extents) | |
2788 | { | |
2789 | /* build a composite disk with all known extents and generate a new | |
2790 | * 'maxsize' given the "all disks in an array must share a common start | |
2791 | * offset" constraint | |
2792 | */ | |
2793 | struct extent *e = calloc(sum_extents, sizeof(*e)); | |
2794 | struct dl *dl; | |
2795 | int i, j; | |
2796 | int start_extent; | |
2797 | unsigned long long pos; | |
2798 | unsigned long long start; | |
2799 | unsigned long long maxsize; | |
2800 | unsigned long reserve; | |
2801 | ||
2802 | if (!e) | |
2803 | return ~0ULL; /* error */ | |
2804 | ||
2805 | /* coalesce and sort all extents. also, check to see if we need to | |
2806 | * reserve space between member arrays | |
2807 | */ | |
2808 | j = 0; | |
2809 | for (dl = super->disks; dl; dl = dl->next) { | |
2810 | if (!dl->e) | |
2811 | continue; | |
2812 | for (i = 0; i < dl->extent_cnt; i++) | |
2813 | e[j++] = dl->e[i]; | |
2814 | } | |
2815 | qsort(e, sum_extents, sizeof(*e), cmp_extent); | |
2816 | ||
2817 | /* merge extents */ | |
2818 | i = 0; | |
2819 | j = 0; | |
2820 | while (i < sum_extents) { | |
2821 | e[j].start = e[i].start; | |
2822 | e[j].size = find_size(e, &i, sum_extents); | |
2823 | j++; | |
2824 | if (e[j-1].size == 0) | |
2825 | break; | |
2826 | } | |
2827 | ||
2828 | pos = 0; | |
2829 | maxsize = 0; | |
2830 | start_extent = 0; | |
2831 | i = 0; | |
2832 | do { | |
2833 | unsigned long long esize; | |
2834 | ||
2835 | esize = e[i].start - pos; | |
2836 | if (esize >= maxsize) { | |
2837 | maxsize = esize; | |
2838 | start = pos; | |
2839 | start_extent = i; | |
2840 | } | |
2841 | pos = e[i].start + e[i].size; | |
2842 | i++; | |
2843 | } while (e[i-1].size); | |
2844 | free(e); | |
2845 | ||
2846 | if (start_extent > 0) | |
2847 | reserve = IMSM_RESERVED_SECTORS; /* gap between raid regions */ | |
2848 | else | |
2849 | reserve = 0; | |
2850 | ||
2851 | if (maxsize < reserve) | |
2852 | return ~0ULL; | |
2853 | ||
2854 | super->create_offset = ~((__u32) 0); | |
2855 | if (start + reserve > super->create_offset) | |
2856 | return ~0ULL; /* start overflows create_offset */ | |
2857 | super->create_offset = start + reserve; | |
2858 | ||
2859 | return maxsize - reserve; | |
2860 | } | |
2861 | ||
88c32bb1 DW |
2862 | static int is_raid_level_supported(const struct imsm_orom *orom, int level, int raiddisks) |
2863 | { | |
2864 | if (level < 0 || level == 6 || level == 4) | |
2865 | return 0; | |
2866 | ||
2867 | /* if we have an orom prevent invalid raid levels */ | |
2868 | if (orom) | |
2869 | switch (level) { | |
2870 | case 0: return imsm_orom_has_raid0(orom); | |
2871 | case 1: | |
2872 | if (raiddisks > 2) | |
2873 | return imsm_orom_has_raid1e(orom); | |
1c556e92 DW |
2874 | return imsm_orom_has_raid1(orom) && raiddisks == 2; |
2875 | case 10: return imsm_orom_has_raid10(orom) && raiddisks == 4; | |
2876 | case 5: return imsm_orom_has_raid5(orom) && raiddisks > 2; | |
88c32bb1 DW |
2877 | } |
2878 | else | |
2879 | return 1; /* not on an Intel RAID platform so anything goes */ | |
2880 | ||
2881 | return 0; | |
2882 | } | |
2883 | ||
35f81cbb | 2884 | #define pr_vrb(fmt, arg...) (void) (verbose && fprintf(stderr, Name fmt, ##arg)) |
c2c087e6 DW |
2885 | /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd |
2886 | * FIX ME add ahci details | |
2887 | */ | |
8b353278 DW |
2888 | static int validate_geometry_imsm_volume(struct supertype *st, int level, |
2889 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 2890 | unsigned long long size, char *dev, |
2c514b71 NB |
2891 | unsigned long long *freesize, |
2892 | int verbose) | |
cdddbdbc | 2893 | { |
c2c087e6 DW |
2894 | struct stat stb; |
2895 | struct intel_super *super = st->sb; | |
a20d2ba5 | 2896 | struct imsm_super *mpb = super->anchor; |
c2c087e6 DW |
2897 | struct dl *dl; |
2898 | unsigned long long pos = 0; | |
2899 | unsigned long long maxsize; | |
2900 | struct extent *e; | |
2901 | int i; | |
cdddbdbc | 2902 | |
88c32bb1 DW |
2903 | /* We must have the container info already read in. */ |
2904 | if (!super) | |
c2c087e6 DW |
2905 | return 0; |
2906 | ||
88c32bb1 | 2907 | if (!is_raid_level_supported(super->orom, level, raiddisks)) { |
1c556e92 DW |
2908 | pr_vrb(": platform does not support raid%d with %d disk%s\n", |
2909 | level, raiddisks, raiddisks > 1 ? "s" : ""); | |
c2c087e6 DW |
2910 | return 0; |
2911 | } | |
78757ce8 DW |
2912 | if (super->orom && level != 1 && |
2913 | !imsm_orom_has_chunk(super->orom, chunk)) { | |
35f81cbb | 2914 | pr_vrb(": platform does not support a chunk size of: %d\n", chunk); |
c2c087e6 | 2915 | return 0; |
88c32bb1 DW |
2916 | } |
2917 | if (layout != imsm_level_to_layout(level)) { | |
2918 | if (level == 5) | |
35f81cbb | 2919 | pr_vrb(": imsm raid 5 only supports the left-asymmetric layout\n"); |
88c32bb1 | 2920 | else if (level == 10) |
35f81cbb | 2921 | pr_vrb(": imsm raid 10 only supports the n2 layout\n"); |
88c32bb1 | 2922 | else |
35f81cbb | 2923 | pr_vrb(": imsm unknown layout %#x for this raid level %d\n", |
88c32bb1 | 2924 | layout, level); |
c2c087e6 | 2925 | return 0; |
88c32bb1 | 2926 | } |
c2c087e6 DW |
2927 | |
2928 | if (!dev) { | |
2929 | /* General test: make sure there is space for | |
2da8544a DW |
2930 | * 'raiddisks' device extents of size 'size' at a given |
2931 | * offset | |
c2c087e6 | 2932 | */ |
e46273eb | 2933 | unsigned long long minsize = size; |
2da8544a | 2934 | unsigned long long start_offset = ~0ULL; |
c2c087e6 DW |
2935 | int dcnt = 0; |
2936 | if (minsize == 0) | |
2937 | minsize = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
2938 | for (dl = super->disks; dl ; dl = dl->next) { | |
2939 | int found = 0; | |
2940 | ||
bf5a934a | 2941 | pos = 0; |
c2c087e6 DW |
2942 | i = 0; |
2943 | e = get_extents(super, dl); | |
2944 | if (!e) continue; | |
2945 | do { | |
2946 | unsigned long long esize; | |
2947 | esize = e[i].start - pos; | |
2948 | if (esize >= minsize) | |
2949 | found = 1; | |
2da8544a DW |
2950 | if (found && start_offset == ~0ULL) { |
2951 | start_offset = pos; | |
2952 | break; | |
2953 | } else if (found && pos != start_offset) { | |
2954 | found = 0; | |
2955 | break; | |
2956 | } | |
c2c087e6 DW |
2957 | pos = e[i].start + e[i].size; |
2958 | i++; | |
2959 | } while (e[i-1].size); | |
2960 | if (found) | |
2961 | dcnt++; | |
2962 | free(e); | |
2963 | } | |
2964 | if (dcnt < raiddisks) { | |
2c514b71 NB |
2965 | if (verbose) |
2966 | fprintf(stderr, Name ": imsm: Not enough " | |
2967 | "devices with space for this array " | |
2968 | "(%d < %d)\n", | |
2969 | dcnt, raiddisks); | |
c2c087e6 DW |
2970 | return 0; |
2971 | } | |
2972 | return 1; | |
2973 | } | |
0dcecb2e | 2974 | |
c2c087e6 DW |
2975 | /* This device must be a member of the set */ |
2976 | if (stat(dev, &stb) < 0) | |
2977 | return 0; | |
2978 | if ((S_IFMT & stb.st_mode) != S_IFBLK) | |
2979 | return 0; | |
2980 | for (dl = super->disks ; dl ; dl = dl->next) { | |
2981 | if (dl->major == major(stb.st_rdev) && | |
2982 | dl->minor == minor(stb.st_rdev)) | |
2983 | break; | |
2984 | } | |
2985 | if (!dl) { | |
2c514b71 NB |
2986 | if (verbose) |
2987 | fprintf(stderr, Name ": %s is not in the " | |
2988 | "same imsm set\n", dev); | |
c2c087e6 | 2989 | return 0; |
a20d2ba5 DW |
2990 | } else if (super->orom && dl->index < 0 && mpb->num_raid_devs) { |
2991 | /* If a volume is present then the current creation attempt | |
2992 | * cannot incorporate new spares because the orom may not | |
2993 | * understand this configuration (all member disks must be | |
2994 | * members of each array in the container). | |
2995 | */ | |
2996 | fprintf(stderr, Name ": %s is a spare and a volume" | |
2997 | " is already defined for this container\n", dev); | |
2998 | fprintf(stderr, Name ": The option-rom requires all member" | |
2999 | " disks to be a member of all volumes\n"); | |
3000 | return 0; | |
c2c087e6 | 3001 | } |
0dcecb2e DW |
3002 | |
3003 | /* retrieve the largest free space block */ | |
c2c087e6 DW |
3004 | e = get_extents(super, dl); |
3005 | maxsize = 0; | |
3006 | i = 0; | |
0dcecb2e DW |
3007 | if (e) { |
3008 | do { | |
3009 | unsigned long long esize; | |
3010 | ||
3011 | esize = e[i].start - pos; | |
3012 | if (esize >= maxsize) | |
3013 | maxsize = esize; | |
3014 | pos = e[i].start + e[i].size; | |
3015 | i++; | |
3016 | } while (e[i-1].size); | |
3017 | dl->e = e; | |
3018 | dl->extent_cnt = i; | |
3019 | } else { | |
3020 | if (verbose) | |
3021 | fprintf(stderr, Name ": unable to determine free space for: %s\n", | |
3022 | dev); | |
3023 | return 0; | |
3024 | } | |
3025 | if (maxsize < size) { | |
3026 | if (verbose) | |
3027 | fprintf(stderr, Name ": %s not enough space (%llu < %llu)\n", | |
3028 | dev, maxsize, size); | |
3029 | return 0; | |
3030 | } | |
3031 | ||
3032 | /* count total number of extents for merge */ | |
3033 | i = 0; | |
3034 | for (dl = super->disks; dl; dl = dl->next) | |
3035 | if (dl->e) | |
3036 | i += dl->extent_cnt; | |
3037 | ||
3038 | maxsize = merge_extents(super, i); | |
3039 | if (maxsize < size) { | |
3040 | if (verbose) | |
3041 | fprintf(stderr, Name ": not enough space after merge (%llu < %llu)\n", | |
3042 | maxsize, size); | |
3043 | return 0; | |
3044 | } else if (maxsize == ~0ULL) { | |
3045 | if (verbose) | |
3046 | fprintf(stderr, Name ": failed to merge %d extents\n", i); | |
3047 | return 0; | |
3048 | } | |
3049 | ||
c2c087e6 DW |
3050 | *freesize = maxsize; |
3051 | ||
3052 | return 1; | |
cdddbdbc DW |
3053 | } |
3054 | ||
bf5a934a DW |
3055 | static int validate_geometry_imsm(struct supertype *st, int level, int layout, |
3056 | int raiddisks, int chunk, unsigned long long size, | |
3057 | char *dev, unsigned long long *freesize, | |
3058 | int verbose) | |
3059 | { | |
3060 | int fd, cfd; | |
3061 | struct mdinfo *sra; | |
3062 | ||
3063 | /* if given unused devices create a container | |
3064 | * if given given devices in a container create a member volume | |
3065 | */ | |
3066 | if (level == LEVEL_CONTAINER) { | |
3067 | /* Must be a fresh device to add to a container */ | |
3068 | return validate_geometry_imsm_container(st, level, layout, | |
3069 | raiddisks, chunk, size, | |
3070 | dev, freesize, | |
3071 | verbose); | |
3072 | } | |
3073 | ||
8592f29d N |
3074 | if (!dev) { |
3075 | if (st->sb && freesize) { | |
3076 | /* Should do auto-layout here */ | |
3077 | fprintf(stderr, Name ": IMSM does not support auto-layout yet\n"); | |
3078 | return 0; | |
3079 | } | |
3080 | return 1; | |
3081 | } | |
bf5a934a DW |
3082 | if (st->sb) { |
3083 | /* creating in a given container */ | |
3084 | return validate_geometry_imsm_volume(st, level, layout, | |
3085 | raiddisks, chunk, size, | |
3086 | dev, freesize, verbose); | |
3087 | } | |
3088 | ||
3089 | /* limit creation to the following levels */ | |
3090 | if (!dev) | |
3091 | switch (level) { | |
3092 | case 0: | |
3093 | case 1: | |
3094 | case 10: | |
3095 | case 5: | |
3096 | break; | |
3097 | default: | |
3098 | return 1; | |
3099 | } | |
3100 | ||
3101 | /* This device needs to be a device in an 'imsm' container */ | |
3102 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
3103 | if (fd >= 0) { | |
3104 | if (verbose) | |
3105 | fprintf(stderr, | |
3106 | Name ": Cannot create this array on device %s\n", | |
3107 | dev); | |
3108 | close(fd); | |
3109 | return 0; | |
3110 | } | |
3111 | if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) { | |
3112 | if (verbose) | |
3113 | fprintf(stderr, Name ": Cannot open %s: %s\n", | |
3114 | dev, strerror(errno)); | |
3115 | return 0; | |
3116 | } | |
3117 | /* Well, it is in use by someone, maybe an 'imsm' container. */ | |
3118 | cfd = open_container(fd); | |
3119 | if (cfd < 0) { | |
3120 | close(fd); | |
3121 | if (verbose) | |
3122 | fprintf(stderr, Name ": Cannot use %s: It is busy\n", | |
3123 | dev); | |
3124 | return 0; | |
3125 | } | |
3126 | sra = sysfs_read(cfd, 0, GET_VERSION); | |
3127 | close(fd); | |
3128 | if (sra && sra->array.major_version == -1 && | |
3129 | strcmp(sra->text_version, "imsm") == 0) { | |
3130 | /* This is a member of a imsm container. Load the container | |
3131 | * and try to create a volume | |
3132 | */ | |
3133 | struct intel_super *super; | |
3134 | ||
3135 | if (load_super_imsm_all(st, cfd, (void **) &super, NULL, 1) == 0) { | |
3136 | st->sb = super; | |
3137 | st->container_dev = fd2devnum(cfd); | |
3138 | close(cfd); | |
3139 | return validate_geometry_imsm_volume(st, level, layout, | |
3140 | raiddisks, chunk, | |
3141 | size, dev, | |
3142 | freesize, verbose); | |
3143 | } | |
3144 | close(cfd); | |
3145 | } else /* may belong to another container */ | |
3146 | return 0; | |
3147 | ||
3148 | return 1; | |
3149 | } | |
0e600426 | 3150 | #endif /* MDASSEMBLE */ |
bf5a934a | 3151 | |
cdddbdbc DW |
3152 | static struct mdinfo *container_content_imsm(struct supertype *st) |
3153 | { | |
4f5bc454 DW |
3154 | /* Given a container loaded by load_super_imsm_all, |
3155 | * extract information about all the arrays into | |
3156 | * an mdinfo tree. | |
3157 | * | |
3158 | * For each imsm_dev create an mdinfo, fill it in, | |
3159 | * then look for matching devices in super->disks | |
3160 | * and create appropriate device mdinfo. | |
3161 | */ | |
3162 | struct intel_super *super = st->sb; | |
949c47a0 | 3163 | struct imsm_super *mpb = super->anchor; |
4f5bc454 DW |
3164 | struct mdinfo *rest = NULL; |
3165 | int i; | |
cdddbdbc | 3166 | |
604b746f JD |
3167 | /* do not assemble arrays that might have bad blocks */ |
3168 | if (imsm_bbm_log_size(super->anchor)) { | |
3169 | fprintf(stderr, Name ": BBM log found in metadata. " | |
3170 | "Cannot activate array(s).\n"); | |
3171 | return NULL; | |
3172 | } | |
3173 | ||
4f5bc454 | 3174 | for (i = 0; i < mpb->num_raid_devs; i++) { |
949c47a0 | 3175 | struct imsm_dev *dev = get_imsm_dev(super, i); |
a965f303 | 3176 | struct imsm_map *map = get_imsm_map(dev, 0); |
4f5bc454 | 3177 | struct mdinfo *this; |
4f5bc454 DW |
3178 | int slot; |
3179 | ||
3180 | this = malloc(sizeof(*this)); | |
3181 | memset(this, 0, sizeof(*this)); | |
3182 | this->next = rest; | |
4f5bc454 | 3183 | |
301406c9 DW |
3184 | super->current_vol = i; |
3185 | getinfo_super_imsm_volume(st, this); | |
4f5bc454 | 3186 | for (slot = 0 ; slot < map->num_members; slot++) { |
4f5bc454 DW |
3187 | struct mdinfo *info_d; |
3188 | struct dl *d; | |
3189 | int idx; | |
9a1608e5 | 3190 | int skip; |
4f5bc454 | 3191 | __u32 s; |
7eef0453 | 3192 | __u32 ord; |
4f5bc454 | 3193 | |
9a1608e5 | 3194 | skip = 0; |
ff077194 | 3195 | idx = get_imsm_disk_idx(dev, slot); |
7eef0453 | 3196 | ord = get_imsm_ord_tbl_ent(dev, slot); |
4f5bc454 DW |
3197 | for (d = super->disks; d ; d = d->next) |
3198 | if (d->index == idx) | |
3199 | break; | |
3200 | ||
3201 | if (d == NULL) | |
9a1608e5 DW |
3202 | skip = 1; |
3203 | ||
f2f27e63 | 3204 | s = d ? d->disk.status : 0; |
9a1608e5 DW |
3205 | if (s & FAILED_DISK) |
3206 | skip = 1; | |
3207 | if (!(s & USABLE_DISK)) | |
3208 | skip = 1; | |
7eef0453 DW |
3209 | if (ord & IMSM_ORD_REBUILD) |
3210 | skip = 1; | |
9a1608e5 DW |
3211 | |
3212 | /* | |
3213 | * if we skip some disks the array will be assmebled degraded; | |
3214 | * reset resync start to avoid a dirty-degraded situation | |
3215 | * | |
3216 | * FIXME handle dirty degraded | |
3217 | */ | |
3218 | if (skip && !dev->vol.dirty) | |
3219 | this->resync_start = ~0ULL; | |
3220 | if (skip) | |
3221 | continue; | |
4f5bc454 DW |
3222 | |
3223 | info_d = malloc(sizeof(*info_d)); | |
9a1608e5 DW |
3224 | if (!info_d) { |
3225 | fprintf(stderr, Name ": failed to allocate disk" | |
3226 | " for volume %s\n", (char *) dev->volume); | |
3227 | free(this); | |
3228 | this = rest; | |
3229 | break; | |
3230 | } | |
4f5bc454 DW |
3231 | memset(info_d, 0, sizeof(*info_d)); |
3232 | info_d->next = this->devs; | |
3233 | this->devs = info_d; | |
3234 | ||
4f5bc454 DW |
3235 | info_d->disk.number = d->index; |
3236 | info_d->disk.major = d->major; | |
3237 | info_d->disk.minor = d->minor; | |
3238 | info_d->disk.raid_disk = slot; | |
4f5bc454 DW |
3239 | |
3240 | this->array.working_disks++; | |
3241 | ||
3242 | info_d->events = __le32_to_cpu(mpb->generation_num); | |
3243 | info_d->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
3244 | info_d->component_size = __le32_to_cpu(map->blocks_per_member); | |
3245 | if (d->devname) | |
3246 | strcpy(info_d->name, d->devname); | |
3247 | } | |
9a1608e5 | 3248 | rest = this; |
4f5bc454 DW |
3249 | } |
3250 | ||
3251 | return rest; | |
cdddbdbc DW |
3252 | } |
3253 | ||
845dea95 | 3254 | |
0e600426 | 3255 | #ifndef MDASSEMBLE |
cba0191b NB |
3256 | static int imsm_open_new(struct supertype *c, struct active_array *a, |
3257 | char *inst) | |
845dea95 | 3258 | { |
0372d5a2 | 3259 | struct intel_super *super = c->sb; |
949c47a0 | 3260 | struct imsm_super *mpb = super->anchor; |
0372d5a2 | 3261 | |
949c47a0 | 3262 | if (atoi(inst) >= mpb->num_raid_devs) { |
0372d5a2 DW |
3263 | fprintf(stderr, "%s: subarry index %d, out of range\n", |
3264 | __func__, atoi(inst)); | |
3265 | return -ENODEV; | |
3266 | } | |
3267 | ||
4e6e574a | 3268 | dprintf("imsm: open_new %s\n", inst); |
cba0191b | 3269 | a->info.container_member = atoi(inst); |
845dea95 NB |
3270 | return 0; |
3271 | } | |
3272 | ||
fb49eef2 | 3273 | static __u8 imsm_check_degraded(struct intel_super *super, struct imsm_dev *dev, int failed) |
c2a1e7da | 3274 | { |
a965f303 | 3275 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2a1e7da DW |
3276 | |
3277 | if (!failed) | |
3393c6af DW |
3278 | return map->map_state == IMSM_T_STATE_UNINITIALIZED ? |
3279 | IMSM_T_STATE_UNINITIALIZED : IMSM_T_STATE_NORMAL; | |
c2a1e7da DW |
3280 | |
3281 | switch (get_imsm_raid_level(map)) { | |
3282 | case 0: | |
3283 | return IMSM_T_STATE_FAILED; | |
3284 | break; | |
3285 | case 1: | |
3286 | if (failed < map->num_members) | |
3287 | return IMSM_T_STATE_DEGRADED; | |
3288 | else | |
3289 | return IMSM_T_STATE_FAILED; | |
3290 | break; | |
3291 | case 10: | |
3292 | { | |
3293 | /** | |
c92a2527 DW |
3294 | * check to see if any mirrors have failed, otherwise we |
3295 | * are degraded. Even numbered slots are mirrored on | |
3296 | * slot+1 | |
c2a1e7da | 3297 | */ |
c2a1e7da | 3298 | int i; |
d9b420a5 N |
3299 | /* gcc -Os complains that this is unused */ |
3300 | int insync = insync; | |
c2a1e7da DW |
3301 | |
3302 | for (i = 0; i < map->num_members; i++) { | |
c92a2527 DW |
3303 | __u32 ord = get_imsm_ord_tbl_ent(dev, i); |
3304 | int idx = ord_to_idx(ord); | |
3305 | struct imsm_disk *disk; | |
c2a1e7da | 3306 | |
c92a2527 DW |
3307 | /* reset the potential in-sync count on even-numbered |
3308 | * slots. num_copies is always 2 for imsm raid10 | |
3309 | */ | |
3310 | if ((i & 1) == 0) | |
3311 | insync = 2; | |
c2a1e7da | 3312 | |
c92a2527 | 3313 | disk = get_imsm_disk(super, idx); |
f2f27e63 | 3314 | if (!disk || disk->status & FAILED_DISK || |
c92a2527 DW |
3315 | ord & IMSM_ORD_REBUILD) |
3316 | insync--; | |
c2a1e7da | 3317 | |
c92a2527 DW |
3318 | /* no in-sync disks left in this mirror the |
3319 | * array has failed | |
3320 | */ | |
3321 | if (insync == 0) | |
3322 | return IMSM_T_STATE_FAILED; | |
c2a1e7da DW |
3323 | } |
3324 | ||
3325 | return IMSM_T_STATE_DEGRADED; | |
3326 | } | |
3327 | case 5: | |
3328 | if (failed < 2) | |
3329 | return IMSM_T_STATE_DEGRADED; | |
3330 | else | |
3331 | return IMSM_T_STATE_FAILED; | |
3332 | break; | |
3333 | default: | |
3334 | break; | |
3335 | } | |
3336 | ||
3337 | return map->map_state; | |
3338 | } | |
3339 | ||
ff077194 | 3340 | static int imsm_count_failed(struct intel_super *super, struct imsm_dev *dev) |
c2a1e7da DW |
3341 | { |
3342 | int i; | |
3343 | int failed = 0; | |
3344 | struct imsm_disk *disk; | |
ff077194 | 3345 | struct imsm_map *map = get_imsm_map(dev, 0); |
0556e1a2 DW |
3346 | struct imsm_map *prev = get_imsm_map(dev, dev->vol.migr_state); |
3347 | __u32 ord; | |
3348 | int idx; | |
c2a1e7da | 3349 | |
0556e1a2 DW |
3350 | /* at the beginning of migration we set IMSM_ORD_REBUILD on |
3351 | * disks that are being rebuilt. New failures are recorded to | |
3352 | * map[0]. So we look through all the disks we started with and | |
3353 | * see if any failures are still present, or if any new ones | |
3354 | * have arrived | |
3355 | * | |
3356 | * FIXME add support for online capacity expansion and | |
3357 | * raid-level-migration | |
3358 | */ | |
3359 | for (i = 0; i < prev->num_members; i++) { | |
3360 | ord = __le32_to_cpu(prev->disk_ord_tbl[i]); | |
3361 | ord |= __le32_to_cpu(map->disk_ord_tbl[i]); | |
3362 | idx = ord_to_idx(ord); | |
c2a1e7da | 3363 | |
949c47a0 | 3364 | disk = get_imsm_disk(super, idx); |
f2f27e63 | 3365 | if (!disk || disk->status & FAILED_DISK || |
b10b37b8 | 3366 | ord & IMSM_ORD_REBUILD) |
fcb84475 | 3367 | failed++; |
c2a1e7da DW |
3368 | } |
3369 | ||
3370 | return failed; | |
845dea95 NB |
3371 | } |
3372 | ||
0c046afd DW |
3373 | static int is_resyncing(struct imsm_dev *dev) |
3374 | { | |
3375 | struct imsm_map *migr_map; | |
3376 | ||
3377 | if (!dev->vol.migr_state) | |
3378 | return 0; | |
3379 | ||
e3bba0e0 | 3380 | if (dev->vol.migr_type == MIGR_INIT) |
0c046afd DW |
3381 | return 1; |
3382 | ||
3383 | migr_map = get_imsm_map(dev, 1); | |
3384 | ||
3385 | if (migr_map->map_state == IMSM_T_STATE_NORMAL) | |
3386 | return 1; | |
3387 | else | |
3388 | return 0; | |
3389 | } | |
3390 | ||
3391 | static int is_rebuilding(struct imsm_dev *dev) | |
3392 | { | |
3393 | struct imsm_map *migr_map; | |
3394 | ||
3395 | if (!dev->vol.migr_state) | |
3396 | return 0; | |
3397 | ||
e3bba0e0 | 3398 | if (dev->vol.migr_type != MIGR_REBUILD) |
0c046afd DW |
3399 | return 0; |
3400 | ||
3401 | migr_map = get_imsm_map(dev, 1); | |
3402 | ||
3403 | if (migr_map->map_state == IMSM_T_STATE_DEGRADED) | |
3404 | return 1; | |
3405 | else | |
3406 | return 0; | |
3407 | } | |
3408 | ||
0556e1a2 DW |
3409 | /* return true if we recorded new information */ |
3410 | static int mark_failure(struct imsm_dev *dev, struct imsm_disk *disk, int idx) | |
47ee5a45 | 3411 | { |
0556e1a2 DW |
3412 | __u32 ord; |
3413 | int slot; | |
3414 | struct imsm_map *map; | |
3415 | ||
3416 | /* new failures are always set in map[0] */ | |
3417 | map = get_imsm_map(dev, 0); | |
3418 | ||
3419 | slot = get_imsm_disk_slot(map, idx); | |
3420 | if (slot < 0) | |
3421 | return 0; | |
3422 | ||
3423 | ord = __le32_to_cpu(map->disk_ord_tbl[slot]); | |
3424 | if ((disk->status & FAILED_DISK) && (ord & IMSM_ORD_REBUILD)) | |
3425 | return 0; | |
3426 | ||
f2f27e63 | 3427 | disk->status |= FAILED_DISK; |
0556e1a2 DW |
3428 | set_imsm_ord_tbl_ent(map, slot, idx | IMSM_ORD_REBUILD); |
3429 | if (map->failed_disk_num == ~0) | |
3430 | map->failed_disk_num = slot; | |
3431 | return 1; | |
3432 | } | |
3433 | ||
3434 | static void mark_missing(struct imsm_dev *dev, struct imsm_disk *disk, int idx) | |
3435 | { | |
3436 | mark_failure(dev, disk, idx); | |
3437 | ||
3438 | if (disk->scsi_id == __cpu_to_le32(~(__u32)0)) | |
3439 | return; | |
3440 | ||
47ee5a45 DW |
3441 | disk->scsi_id = __cpu_to_le32(~(__u32)0); |
3442 | memmove(&disk->serial[0], &disk->serial[1], MAX_RAID_SERIAL_LEN - 1); | |
3443 | } | |
3444 | ||
0c046afd DW |
3445 | /* Handle dirty -> clean transititions and resync. Degraded and rebuild |
3446 | * states are handled in imsm_set_disk() with one exception, when a | |
3447 | * resync is stopped due to a new failure this routine will set the | |
3448 | * 'degraded' state for the array. | |
3449 | */ | |
01f157d7 | 3450 | static int imsm_set_array_state(struct active_array *a, int consistent) |
a862209d DW |
3451 | { |
3452 | int inst = a->info.container_member; | |
3453 | struct intel_super *super = a->container->sb; | |
949c47a0 | 3454 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
a965f303 | 3455 | struct imsm_map *map = get_imsm_map(dev, 0); |
0c046afd DW |
3456 | int failed = imsm_count_failed(super, dev); |
3457 | __u8 map_state = imsm_check_degraded(super, dev, failed); | |
a862209d | 3458 | |
47ee5a45 DW |
3459 | /* before we activate this array handle any missing disks */ |
3460 | if (consistent == 2 && super->missing) { | |
3461 | struct dl *dl; | |
3462 | ||
3463 | dprintf("imsm: mark missing\n"); | |
3464 | end_migration(dev, map_state); | |
3465 | for (dl = super->missing; dl; dl = dl->next) | |
0556e1a2 | 3466 | mark_missing(dev, &dl->disk, dl->index); |
47ee5a45 DW |
3467 | super->updates_pending++; |
3468 | } | |
3469 | ||
0c046afd | 3470 | if (consistent == 2 && |
593add1b | 3471 | (!is_resync_complete(a) || |
0c046afd DW |
3472 | map_state != IMSM_T_STATE_NORMAL || |
3473 | dev->vol.migr_state)) | |
01f157d7 | 3474 | consistent = 0; |
272906ef | 3475 | |
593add1b | 3476 | if (is_resync_complete(a)) { |
0c046afd | 3477 | /* complete intialization / resync, |
0556e1a2 DW |
3478 | * recovery and interrupted recovery is completed in |
3479 | * ->set_disk | |
0c046afd DW |
3480 | */ |
3481 | if (is_resyncing(dev)) { | |
3482 | dprintf("imsm: mark resync done\n"); | |
f8f603f1 | 3483 | end_migration(dev, map_state); |
115c3803 | 3484 | super->updates_pending++; |
115c3803 | 3485 | } |
0c046afd DW |
3486 | } else if (!is_resyncing(dev) && !failed) { |
3487 | /* mark the start of the init process if nothing is failed */ | |
3488 | dprintf("imsm: mark resync start (%llu)\n", a->resync_start); | |
e3bba0e0 DW |
3489 | if (map->map_state == IMSM_T_STATE_NORMAL) |
3490 | migrate(dev, IMSM_T_STATE_NORMAL, MIGR_REBUILD); | |
3491 | else | |
3492 | migrate(dev, IMSM_T_STATE_NORMAL, MIGR_INIT); | |
3393c6af | 3493 | super->updates_pending++; |
115c3803 | 3494 | } |
a862209d | 3495 | |
f8f603f1 DW |
3496 | /* check if we can update the migration checkpoint */ |
3497 | if (dev->vol.migr_state && | |
3498 | __le32_to_cpu(dev->vol.curr_migr_unit) != a->resync_start) { | |
3499 | dprintf("imsm: checkpoint migration (%llu)\n", a->resync_start); | |
3500 | dev->vol.curr_migr_unit = __cpu_to_le32(a->resync_start); | |
3501 | super->updates_pending++; | |
3502 | } | |
3503 | ||
3393c6af | 3504 | /* mark dirty / clean */ |
0c046afd | 3505 | if (dev->vol.dirty != !consistent) { |
3393c6af | 3506 | dprintf("imsm: mark '%s' (%llu)\n", |
0c046afd DW |
3507 | consistent ? "clean" : "dirty", a->resync_start); |
3508 | if (consistent) | |
3509 | dev->vol.dirty = 0; | |
3510 | else | |
3511 | dev->vol.dirty = 1; | |
a862209d DW |
3512 | super->updates_pending++; |
3513 | } | |
01f157d7 | 3514 | return consistent; |
a862209d DW |
3515 | } |
3516 | ||
8d45d196 | 3517 | static void imsm_set_disk(struct active_array *a, int n, int state) |
845dea95 | 3518 | { |
8d45d196 DW |
3519 | int inst = a->info.container_member; |
3520 | struct intel_super *super = a->container->sb; | |
949c47a0 | 3521 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
a965f303 | 3522 | struct imsm_map *map = get_imsm_map(dev, 0); |
8d45d196 | 3523 | struct imsm_disk *disk; |
0c046afd | 3524 | int failed; |
b10b37b8 | 3525 | __u32 ord; |
0c046afd | 3526 | __u8 map_state; |
8d45d196 DW |
3527 | |
3528 | if (n > map->num_members) | |
3529 | fprintf(stderr, "imsm: set_disk %d out of range 0..%d\n", | |
3530 | n, map->num_members - 1); | |
3531 | ||
3532 | if (n < 0) | |
3533 | return; | |
3534 | ||
4e6e574a | 3535 | dprintf("imsm: set_disk %d:%x\n", n, state); |
8d45d196 | 3536 | |
b10b37b8 DW |
3537 | ord = get_imsm_ord_tbl_ent(dev, n); |
3538 | disk = get_imsm_disk(super, ord_to_idx(ord)); | |
8d45d196 | 3539 | |
5802a811 | 3540 | /* check for new failures */ |
0556e1a2 DW |
3541 | if (state & DS_FAULTY) { |
3542 | if (mark_failure(dev, disk, ord_to_idx(ord))) | |
3543 | super->updates_pending++; | |
8d45d196 | 3544 | } |
47ee5a45 | 3545 | |
19859edc | 3546 | /* check if in_sync */ |
0556e1a2 | 3547 | if (state & DS_INSYNC && ord & IMSM_ORD_REBUILD && is_rebuilding(dev)) { |
b10b37b8 DW |
3548 | struct imsm_map *migr_map = get_imsm_map(dev, 1); |
3549 | ||
3550 | set_imsm_ord_tbl_ent(migr_map, n, ord_to_idx(ord)); | |
19859edc DW |
3551 | super->updates_pending++; |
3552 | } | |
8d45d196 | 3553 | |
0c046afd DW |
3554 | failed = imsm_count_failed(super, dev); |
3555 | map_state = imsm_check_degraded(super, dev, failed); | |
5802a811 | 3556 | |
0c046afd DW |
3557 | /* check if recovery complete, newly degraded, or failed */ |
3558 | if (map_state == IMSM_T_STATE_NORMAL && is_rebuilding(dev)) { | |
f8f603f1 | 3559 | end_migration(dev, map_state); |
0556e1a2 DW |
3560 | map = get_imsm_map(dev, 0); |
3561 | map->failed_disk_num = ~0; | |
0c046afd DW |
3562 | super->updates_pending++; |
3563 | } else if (map_state == IMSM_T_STATE_DEGRADED && | |
3564 | map->map_state != map_state && | |
3565 | !dev->vol.migr_state) { | |
3566 | dprintf("imsm: mark degraded\n"); | |
3567 | map->map_state = map_state; | |
3568 | super->updates_pending++; | |
3569 | } else if (map_state == IMSM_T_STATE_FAILED && | |
3570 | map->map_state != map_state) { | |
3571 | dprintf("imsm: mark failed\n"); | |
f8f603f1 | 3572 | end_migration(dev, map_state); |
0c046afd | 3573 | super->updates_pending++; |
5802a811 | 3574 | } |
845dea95 NB |
3575 | } |
3576 | ||
c2a1e7da DW |
3577 | static int store_imsm_mpb(int fd, struct intel_super *super) |
3578 | { | |
949c47a0 | 3579 | struct imsm_super *mpb = super->anchor; |
c2a1e7da DW |
3580 | __u32 mpb_size = __le32_to_cpu(mpb->mpb_size); |
3581 | unsigned long long dsize; | |
3582 | unsigned long long sectors; | |
3583 | ||
3584 | get_dev_size(fd, NULL, &dsize); | |
3585 | ||
272f648f DW |
3586 | if (mpb_size > 512) { |
3587 | /* -1 to account for anchor */ | |
3588 | sectors = mpb_sectors(mpb) - 1; | |
c2a1e7da | 3589 | |
272f648f DW |
3590 | /* write the extended mpb to the sectors preceeding the anchor */ |
3591 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) | |
3592 | return 1; | |
c2a1e7da | 3593 | |
99e29264 | 3594 | if (write(fd, super->buf + 512, 512 * sectors) != 512 * sectors) |
272f648f DW |
3595 | return 1; |
3596 | } | |
c2a1e7da | 3597 | |
272f648f DW |
3598 | /* first block is stored on second to last sector of the disk */ |
3599 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
c2a1e7da DW |
3600 | return 1; |
3601 | ||
272f648f | 3602 | if (write(fd, super->buf, 512) != 512) |
c2a1e7da DW |
3603 | return 1; |
3604 | ||
c2a1e7da DW |
3605 | return 0; |
3606 | } | |
3607 | ||
2e735d19 | 3608 | static void imsm_sync_metadata(struct supertype *container) |
845dea95 | 3609 | { |
2e735d19 | 3610 | struct intel_super *super = container->sb; |
c2a1e7da DW |
3611 | |
3612 | if (!super->updates_pending) | |
3613 | return; | |
3614 | ||
c2c087e6 | 3615 | write_super_imsm(super, 0); |
c2a1e7da DW |
3616 | |
3617 | super->updates_pending = 0; | |
845dea95 NB |
3618 | } |
3619 | ||
272906ef DW |
3620 | static struct dl *imsm_readd(struct intel_super *super, int idx, struct active_array *a) |
3621 | { | |
3622 | struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member); | |
ff077194 | 3623 | int i = get_imsm_disk_idx(dev, idx); |
272906ef DW |
3624 | struct dl *dl; |
3625 | ||
3626 | for (dl = super->disks; dl; dl = dl->next) | |
3627 | if (dl->index == i) | |
3628 | break; | |
3629 | ||
f2f27e63 | 3630 | if (dl && dl->disk.status & FAILED_DISK) |
272906ef DW |
3631 | dl = NULL; |
3632 | ||
3633 | if (dl) | |
3634 | dprintf("%s: found %x:%x\n", __func__, dl->major, dl->minor); | |
3635 | ||
3636 | return dl; | |
3637 | } | |
3638 | ||
a20d2ba5 DW |
3639 | static struct dl *imsm_add_spare(struct intel_super *super, int slot, |
3640 | struct active_array *a, int activate_new) | |
272906ef DW |
3641 | { |
3642 | struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member); | |
e553d2a4 | 3643 | int idx = get_imsm_disk_idx(dev, slot); |
a20d2ba5 DW |
3644 | struct imsm_super *mpb = super->anchor; |
3645 | struct imsm_map *map; | |
272906ef DW |
3646 | unsigned long long esize; |
3647 | unsigned long long pos; | |
3648 | struct mdinfo *d; | |
3649 | struct extent *ex; | |
a20d2ba5 | 3650 | int i, j; |
272906ef DW |
3651 | int found; |
3652 | __u32 array_start; | |
a20d2ba5 | 3653 | __u32 blocks; |
272906ef DW |
3654 | struct dl *dl; |
3655 | ||
3656 | for (dl = super->disks; dl; dl = dl->next) { | |
3657 | /* If in this array, skip */ | |
3658 | for (d = a->info.devs ; d ; d = d->next) | |
e553d2a4 DW |
3659 | if (d->state_fd >= 0 && |
3660 | d->disk.major == dl->major && | |
272906ef DW |
3661 | d->disk.minor == dl->minor) { |
3662 | dprintf("%x:%x already in array\n", dl->major, dl->minor); | |
3663 | break; | |
3664 | } | |
3665 | if (d) | |
3666 | continue; | |
3667 | ||
e553d2a4 | 3668 | /* skip in use or failed drives */ |
df474657 DW |
3669 | if (dl->disk.status & FAILED_DISK || idx == dl->index || |
3670 | dl->index == -2) { | |
3671 | dprintf("%x:%x status (failed: %d index: %d)\n", | |
3672 | dl->major, dl->minor, | |
3673 | (dl->disk.status & FAILED_DISK) == FAILED_DISK, idx); | |
9a1608e5 DW |
3674 | continue; |
3675 | } | |
3676 | ||
a20d2ba5 DW |
3677 | /* skip pure spares when we are looking for partially |
3678 | * assimilated drives | |
3679 | */ | |
3680 | if (dl->index == -1 && !activate_new) | |
3681 | continue; | |
3682 | ||
272906ef | 3683 | /* Does this unused device have the requisite free space? |
a20d2ba5 | 3684 | * It needs to be able to cover all member volumes |
272906ef DW |
3685 | */ |
3686 | ex = get_extents(super, dl); | |
3687 | if (!ex) { | |
3688 | dprintf("cannot get extents\n"); | |
3689 | continue; | |
3690 | } | |
a20d2ba5 DW |
3691 | for (i = 0; i < mpb->num_raid_devs; i++) { |
3692 | dev = get_imsm_dev(super, i); | |
3693 | map = get_imsm_map(dev, 0); | |
272906ef | 3694 | |
a20d2ba5 DW |
3695 | /* check if this disk is already a member of |
3696 | * this array | |
272906ef | 3697 | */ |
620b1713 | 3698 | if (get_imsm_disk_slot(map, dl->index) >= 0) |
a20d2ba5 DW |
3699 | continue; |
3700 | ||
3701 | found = 0; | |
3702 | j = 0; | |
3703 | pos = 0; | |
3704 | array_start = __le32_to_cpu(map->pba_of_lba0); | |
3705 | blocks = __le32_to_cpu(map->blocks_per_member); | |
3706 | ||
3707 | do { | |
3708 | /* check that we can start at pba_of_lba0 with | |
3709 | * blocks_per_member of space | |
3710 | */ | |
3711 | esize = ex[j].start - pos; | |
3712 | if (array_start >= pos && | |
3713 | array_start + blocks < ex[j].start) { | |
3714 | found = 1; | |
3715 | break; | |
3716 | } | |
3717 | pos = ex[j].start + ex[j].size; | |
3718 | j++; | |
3719 | } while (ex[j-1].size); | |
3720 | ||
3721 | if (!found) | |
272906ef | 3722 | break; |
a20d2ba5 | 3723 | } |
272906ef DW |
3724 | |
3725 | free(ex); | |
a20d2ba5 DW |
3726 | if (i < mpb->num_raid_devs) { |
3727 | dprintf("%x:%x does not have %u at %u\n", | |
272906ef | 3728 | dl->major, dl->minor, |
a20d2ba5 | 3729 | blocks, array_start); |
272906ef DW |
3730 | /* No room */ |
3731 | continue; | |
a20d2ba5 DW |
3732 | } |
3733 | return dl; | |
272906ef DW |
3734 | } |
3735 | ||
3736 | return dl; | |
3737 | } | |
3738 | ||
88758e9d DW |
3739 | static struct mdinfo *imsm_activate_spare(struct active_array *a, |
3740 | struct metadata_update **updates) | |
3741 | { | |
3742 | /** | |
d23fe947 DW |
3743 | * Find a device with unused free space and use it to replace a |
3744 | * failed/vacant region in an array. We replace failed regions one a | |
3745 | * array at a time. The result is that a new spare disk will be added | |
3746 | * to the first failed array and after the monitor has finished | |
3747 | * propagating failures the remainder will be consumed. | |
88758e9d | 3748 | * |
d23fe947 DW |
3749 | * FIXME add a capability for mdmon to request spares from another |
3750 | * container. | |
88758e9d DW |
3751 | */ |
3752 | ||
3753 | struct intel_super *super = a->container->sb; | |
88758e9d | 3754 | int inst = a->info.container_member; |
949c47a0 | 3755 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
a965f303 | 3756 | struct imsm_map *map = get_imsm_map(dev, 0); |
88758e9d DW |
3757 | int failed = a->info.array.raid_disks; |
3758 | struct mdinfo *rv = NULL; | |
3759 | struct mdinfo *d; | |
3760 | struct mdinfo *di; | |
3761 | struct metadata_update *mu; | |
3762 | struct dl *dl; | |
3763 | struct imsm_update_activate_spare *u; | |
3764 | int num_spares = 0; | |
3765 | int i; | |
3766 | ||
3767 | for (d = a->info.devs ; d ; d = d->next) { | |
3768 | if ((d->curr_state & DS_FAULTY) && | |
3769 | d->state_fd >= 0) | |
3770 | /* wait for Removal to happen */ | |
3771 | return NULL; | |
3772 | if (d->state_fd >= 0) | |
3773 | failed--; | |
3774 | } | |
3775 | ||
3776 | dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n", | |
3777 | inst, failed, a->info.array.raid_disks, a->info.array.level); | |
fb49eef2 | 3778 | if (imsm_check_degraded(super, dev, failed) != IMSM_T_STATE_DEGRADED) |
88758e9d DW |
3779 | return NULL; |
3780 | ||
3781 | /* For each slot, if it is not working, find a spare */ | |
88758e9d DW |
3782 | for (i = 0; i < a->info.array.raid_disks; i++) { |
3783 | for (d = a->info.devs ; d ; d = d->next) | |
3784 | if (d->disk.raid_disk == i) | |
3785 | break; | |
3786 | dprintf("found %d: %p %x\n", i, d, d?d->curr_state:0); | |
3787 | if (d && (d->state_fd >= 0)) | |
3788 | continue; | |
3789 | ||
272906ef | 3790 | /* |
a20d2ba5 DW |
3791 | * OK, this device needs recovery. Try to re-add the |
3792 | * previous occupant of this slot, if this fails see if | |
3793 | * we can continue the assimilation of a spare that was | |
3794 | * partially assimilated, finally try to activate a new | |
3795 | * spare. | |
272906ef DW |
3796 | */ |
3797 | dl = imsm_readd(super, i, a); | |
3798 | if (!dl) | |
a20d2ba5 DW |
3799 | dl = imsm_add_spare(super, i, a, 0); |
3800 | if (!dl) | |
3801 | dl = imsm_add_spare(super, i, a, 1); | |
272906ef DW |
3802 | if (!dl) |
3803 | continue; | |
3804 | ||
3805 | /* found a usable disk with enough space */ | |
3806 | di = malloc(sizeof(*di)); | |
79244939 DW |
3807 | if (!di) |
3808 | continue; | |
272906ef DW |
3809 | memset(di, 0, sizeof(*di)); |
3810 | ||
3811 | /* dl->index will be -1 in the case we are activating a | |
3812 | * pristine spare. imsm_process_update() will create a | |
3813 | * new index in this case. Once a disk is found to be | |
3814 | * failed in all member arrays it is kicked from the | |
3815 | * metadata | |
3816 | */ | |
3817 | di->disk.number = dl->index; | |
d23fe947 | 3818 | |
272906ef DW |
3819 | /* (ab)use di->devs to store a pointer to the device |
3820 | * we chose | |
3821 | */ | |
3822 | di->devs = (struct mdinfo *) dl; | |
3823 | ||
3824 | di->disk.raid_disk = i; | |
3825 | di->disk.major = dl->major; | |
3826 | di->disk.minor = dl->minor; | |
3827 | di->disk.state = 0; | |
3828 | di->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
3829 | di->component_size = a->info.component_size; | |
3830 | di->container_member = inst; | |
3831 | di->next = rv; | |
3832 | rv = di; | |
3833 | num_spares++; | |
3834 | dprintf("%x:%x to be %d at %llu\n", dl->major, dl->minor, | |
3835 | i, di->data_offset); | |
88758e9d | 3836 | |
272906ef | 3837 | break; |
88758e9d DW |
3838 | } |
3839 | ||
3840 | if (!rv) | |
3841 | /* No spares found */ | |
3842 | return rv; | |
3843 | /* Now 'rv' has a list of devices to return. | |
3844 | * Create a metadata_update record to update the | |
3845 | * disk_ord_tbl for the array | |
3846 | */ | |
3847 | mu = malloc(sizeof(*mu)); | |
79244939 DW |
3848 | if (mu) { |
3849 | mu->buf = malloc(sizeof(struct imsm_update_activate_spare) * num_spares); | |
3850 | if (mu->buf == NULL) { | |
3851 | free(mu); | |
3852 | mu = NULL; | |
3853 | } | |
3854 | } | |
3855 | if (!mu) { | |
3856 | while (rv) { | |
3857 | struct mdinfo *n = rv->next; | |
3858 | ||
3859 | free(rv); | |
3860 | rv = n; | |
3861 | } | |
3862 | return NULL; | |
3863 | } | |
3864 | ||
88758e9d DW |
3865 | mu->space = NULL; |
3866 | mu->len = sizeof(struct imsm_update_activate_spare) * num_spares; | |
3867 | mu->next = *updates; | |
3868 | u = (struct imsm_update_activate_spare *) mu->buf; | |
3869 | ||
3870 | for (di = rv ; di ; di = di->next) { | |
3871 | u->type = update_activate_spare; | |
d23fe947 DW |
3872 | u->dl = (struct dl *) di->devs; |
3873 | di->devs = NULL; | |
88758e9d DW |
3874 | u->slot = di->disk.raid_disk; |
3875 | u->array = inst; | |
3876 | u->next = u + 1; | |
3877 | u++; | |
3878 | } | |
3879 | (u-1)->next = NULL; | |
3880 | *updates = mu; | |
3881 | ||
3882 | return rv; | |
3883 | } | |
3884 | ||
54c2c1ea | 3885 | static int disks_overlap(struct intel_super *super, int idx, struct imsm_update_create_array *u) |
8273f55e | 3886 | { |
54c2c1ea DW |
3887 | struct imsm_dev *dev = get_imsm_dev(super, idx); |
3888 | struct imsm_map *map = get_imsm_map(dev, 0); | |
3889 | struct imsm_map *new_map = get_imsm_map(&u->dev, 0); | |
3890 | struct disk_info *inf = get_disk_info(u); | |
3891 | struct imsm_disk *disk; | |
8273f55e DW |
3892 | int i; |
3893 | int j; | |
8273f55e | 3894 | |
54c2c1ea DW |
3895 | for (i = 0; i < map->num_members; i++) { |
3896 | disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i)); | |
3897 | for (j = 0; j < new_map->num_members; j++) | |
3898 | if (serialcmp(disk->serial, inf[j].serial) == 0) | |
8273f55e DW |
3899 | return 1; |
3900 | } | |
3901 | ||
3902 | return 0; | |
3903 | } | |
3904 | ||
24565c9a | 3905 | static void imsm_delete(struct intel_super *super, struct dl **dlp, int index); |
ae6aad82 | 3906 | |
e8319a19 DW |
3907 | static void imsm_process_update(struct supertype *st, |
3908 | struct metadata_update *update) | |
3909 | { | |
3910 | /** | |
3911 | * crack open the metadata_update envelope to find the update record | |
3912 | * update can be one of: | |
3913 | * update_activate_spare - a spare device has replaced a failed | |
3914 | * device in an array, update the disk_ord_tbl. If this disk is | |
3915 | * present in all member arrays then also clear the SPARE_DISK | |
3916 | * flag | |
3917 | */ | |
3918 | struct intel_super *super = st->sb; | |
4d7b1503 | 3919 | struct imsm_super *mpb; |
e8319a19 DW |
3920 | enum imsm_update_type type = *(enum imsm_update_type *) update->buf; |
3921 | ||
4d7b1503 DW |
3922 | /* update requires a larger buf but the allocation failed */ |
3923 | if (super->next_len && !super->next_buf) { | |
3924 | super->next_len = 0; | |
3925 | return; | |
3926 | } | |
3927 | ||
3928 | if (super->next_buf) { | |
3929 | memcpy(super->next_buf, super->buf, super->len); | |
3930 | free(super->buf); | |
3931 | super->len = super->next_len; | |
3932 | super->buf = super->next_buf; | |
3933 | ||
3934 | super->next_len = 0; | |
3935 | super->next_buf = NULL; | |
3936 | } | |
3937 | ||
3938 | mpb = super->anchor; | |
3939 | ||
e8319a19 DW |
3940 | switch (type) { |
3941 | case update_activate_spare: { | |
3942 | struct imsm_update_activate_spare *u = (void *) update->buf; | |
949c47a0 | 3943 | struct imsm_dev *dev = get_imsm_dev(super, u->array); |
a965f303 | 3944 | struct imsm_map *map = get_imsm_map(dev, 0); |
0c046afd | 3945 | struct imsm_map *migr_map; |
e8319a19 DW |
3946 | struct active_array *a; |
3947 | struct imsm_disk *disk; | |
0c046afd | 3948 | __u8 to_state; |
e8319a19 | 3949 | struct dl *dl; |
e8319a19 | 3950 | unsigned int found; |
0c046afd DW |
3951 | int failed; |
3952 | int victim = get_imsm_disk_idx(dev, u->slot); | |
e8319a19 DW |
3953 | int i; |
3954 | ||
3955 | for (dl = super->disks; dl; dl = dl->next) | |
d23fe947 | 3956 | if (dl == u->dl) |
e8319a19 DW |
3957 | break; |
3958 | ||
3959 | if (!dl) { | |
3960 | fprintf(stderr, "error: imsm_activate_spare passed " | |
1f24f035 DW |
3961 | "an unknown disk (index: %d)\n", |
3962 | u->dl->index); | |
e8319a19 DW |
3963 | return; |
3964 | } | |
3965 | ||
3966 | super->updates_pending++; | |
3967 | ||
0c046afd DW |
3968 | /* count failures (excluding rebuilds and the victim) |
3969 | * to determine map[0] state | |
3970 | */ | |
3971 | failed = 0; | |
3972 | for (i = 0; i < map->num_members; i++) { | |
3973 | if (i == u->slot) | |
3974 | continue; | |
3975 | disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i)); | |
f2f27e63 | 3976 | if (!disk || disk->status & FAILED_DISK) |
0c046afd DW |
3977 | failed++; |
3978 | } | |
3979 | ||
d23fe947 DW |
3980 | /* adding a pristine spare, assign a new index */ |
3981 | if (dl->index < 0) { | |
3982 | dl->index = super->anchor->num_disks; | |
3983 | super->anchor->num_disks++; | |
3984 | } | |
d23fe947 | 3985 | disk = &dl->disk; |
f2f27e63 DW |
3986 | disk->status |= CONFIGURED_DISK; |
3987 | disk->status &= ~SPARE_DISK; | |
e8319a19 | 3988 | |
0c046afd DW |
3989 | /* mark rebuild */ |
3990 | to_state = imsm_check_degraded(super, dev, failed); | |
3991 | map->map_state = IMSM_T_STATE_DEGRADED; | |
e3bba0e0 | 3992 | migrate(dev, to_state, MIGR_REBUILD); |
0c046afd DW |
3993 | migr_map = get_imsm_map(dev, 1); |
3994 | set_imsm_ord_tbl_ent(map, u->slot, dl->index); | |
3995 | set_imsm_ord_tbl_ent(migr_map, u->slot, dl->index | IMSM_ORD_REBUILD); | |
3996 | ||
e8319a19 DW |
3997 | /* count arrays using the victim in the metadata */ |
3998 | found = 0; | |
3999 | for (a = st->arrays; a ; a = a->next) { | |
949c47a0 | 4000 | dev = get_imsm_dev(super, a->info.container_member); |
620b1713 DW |
4001 | map = get_imsm_map(dev, 0); |
4002 | ||
4003 | if (get_imsm_disk_slot(map, victim) >= 0) | |
4004 | found++; | |
e8319a19 DW |
4005 | } |
4006 | ||
24565c9a | 4007 | /* delete the victim if it is no longer being |
e8319a19 DW |
4008 | * utilized anywhere |
4009 | */ | |
e8319a19 | 4010 | if (!found) { |
ae6aad82 | 4011 | struct dl **dlp; |
24565c9a | 4012 | |
47ee5a45 DW |
4013 | /* We know that 'manager' isn't touching anything, |
4014 | * so it is safe to delete | |
4015 | */ | |
24565c9a | 4016 | for (dlp = &super->disks; *dlp; dlp = &(*dlp)->next) |
ae6aad82 DW |
4017 | if ((*dlp)->index == victim) |
4018 | break; | |
47ee5a45 DW |
4019 | |
4020 | /* victim may be on the missing list */ | |
4021 | if (!*dlp) | |
4022 | for (dlp = &super->missing; *dlp; dlp = &(*dlp)->next) | |
4023 | if ((*dlp)->index == victim) | |
4024 | break; | |
24565c9a | 4025 | imsm_delete(super, dlp, victim); |
e8319a19 | 4026 | } |
8273f55e DW |
4027 | break; |
4028 | } | |
4029 | case update_create_array: { | |
4030 | /* someone wants to create a new array, we need to be aware of | |
4031 | * a few races/collisions: | |
4032 | * 1/ 'Create' called by two separate instances of mdadm | |
4033 | * 2/ 'Create' versus 'activate_spare': mdadm has chosen | |
4034 | * devices that have since been assimilated via | |
4035 | * activate_spare. | |
4036 | * In the event this update can not be carried out mdadm will | |
4037 | * (FIX ME) notice that its update did not take hold. | |
4038 | */ | |
4039 | struct imsm_update_create_array *u = (void *) update->buf; | |
ba2de7ba | 4040 | struct intel_dev *dv; |
8273f55e DW |
4041 | struct imsm_dev *dev; |
4042 | struct imsm_map *map, *new_map; | |
4043 | unsigned long long start, end; | |
4044 | unsigned long long new_start, new_end; | |
4045 | int i; | |
54c2c1ea DW |
4046 | struct disk_info *inf; |
4047 | struct dl *dl; | |
8273f55e DW |
4048 | |
4049 | /* handle racing creates: first come first serve */ | |
4050 | if (u->dev_idx < mpb->num_raid_devs) { | |
4051 | dprintf("%s: subarray %d already defined\n", | |
4052 | __func__, u->dev_idx); | |
ba2de7ba | 4053 | goto create_error; |
8273f55e DW |
4054 | } |
4055 | ||
4056 | /* check update is next in sequence */ | |
4057 | if (u->dev_idx != mpb->num_raid_devs) { | |
6a3e913e DW |
4058 | dprintf("%s: can not create array %d expected index %d\n", |
4059 | __func__, u->dev_idx, mpb->num_raid_devs); | |
ba2de7ba | 4060 | goto create_error; |
8273f55e DW |
4061 | } |
4062 | ||
a965f303 | 4063 | new_map = get_imsm_map(&u->dev, 0); |
8273f55e DW |
4064 | new_start = __le32_to_cpu(new_map->pba_of_lba0); |
4065 | new_end = new_start + __le32_to_cpu(new_map->blocks_per_member); | |
54c2c1ea | 4066 | inf = get_disk_info(u); |
8273f55e DW |
4067 | |
4068 | /* handle activate_spare versus create race: | |
4069 | * check to make sure that overlapping arrays do not include | |
4070 | * overalpping disks | |
4071 | */ | |
4072 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
949c47a0 | 4073 | dev = get_imsm_dev(super, i); |
a965f303 | 4074 | map = get_imsm_map(dev, 0); |
8273f55e DW |
4075 | start = __le32_to_cpu(map->pba_of_lba0); |
4076 | end = start + __le32_to_cpu(map->blocks_per_member); | |
4077 | if ((new_start >= start && new_start <= end) || | |
4078 | (start >= new_start && start <= new_end)) | |
54c2c1ea DW |
4079 | /* overlap */; |
4080 | else | |
4081 | continue; | |
4082 | ||
4083 | if (disks_overlap(super, i, u)) { | |
8273f55e | 4084 | dprintf("%s: arrays overlap\n", __func__); |
ba2de7ba | 4085 | goto create_error; |
8273f55e DW |
4086 | } |
4087 | } | |
8273f55e | 4088 | |
949c47a0 DW |
4089 | /* check that prepare update was successful */ |
4090 | if (!update->space) { | |
4091 | dprintf("%s: prepare update failed\n", __func__); | |
ba2de7ba | 4092 | goto create_error; |
949c47a0 DW |
4093 | } |
4094 | ||
54c2c1ea DW |
4095 | /* check that all disks are still active before committing |
4096 | * changes. FIXME: could we instead handle this by creating a | |
4097 | * degraded array? That's probably not what the user expects, | |
4098 | * so better to drop this update on the floor. | |
4099 | */ | |
4100 | for (i = 0; i < new_map->num_members; i++) { | |
4101 | dl = serial_to_dl(inf[i].serial, super); | |
4102 | if (!dl) { | |
4103 | dprintf("%s: disk disappeared\n", __func__); | |
ba2de7ba | 4104 | goto create_error; |
54c2c1ea | 4105 | } |
949c47a0 DW |
4106 | } |
4107 | ||
8273f55e | 4108 | super->updates_pending++; |
54c2c1ea DW |
4109 | |
4110 | /* convert spares to members and fixup ord_tbl */ | |
4111 | for (i = 0; i < new_map->num_members; i++) { | |
4112 | dl = serial_to_dl(inf[i].serial, super); | |
4113 | if (dl->index == -1) { | |
4114 | dl->index = mpb->num_disks; | |
4115 | mpb->num_disks++; | |
4116 | dl->disk.status |= CONFIGURED_DISK; | |
4117 | dl->disk.status &= ~SPARE_DISK; | |
4118 | } | |
4119 | set_imsm_ord_tbl_ent(new_map, i, dl->index); | |
4120 | } | |
4121 | ||
ba2de7ba DW |
4122 | dv = update->space; |
4123 | dev = dv->dev; | |
949c47a0 DW |
4124 | update->space = NULL; |
4125 | imsm_copy_dev(dev, &u->dev); | |
ba2de7ba DW |
4126 | dv->index = u->dev_idx; |
4127 | dv->next = super->devlist; | |
4128 | super->devlist = dv; | |
8273f55e | 4129 | mpb->num_raid_devs++; |
8273f55e | 4130 | |
4d1313e9 | 4131 | imsm_update_version_info(super); |
8273f55e | 4132 | break; |
ba2de7ba DW |
4133 | create_error: |
4134 | /* mdmon knows how to release update->space, but not | |
4135 | * ((struct intel_dev *) update->space)->dev | |
4136 | */ | |
4137 | if (update->space) { | |
4138 | dv = update->space; | |
4139 | free(dv->dev); | |
4140 | } | |
8273f55e | 4141 | break; |
e8319a19 | 4142 | } |
43dad3d6 DW |
4143 | case update_add_disk: |
4144 | ||
4145 | /* we may be able to repair some arrays if disks are | |
4146 | * being added */ | |
4147 | if (super->add) { | |
4148 | struct active_array *a; | |
072b727f DW |
4149 | |
4150 | super->updates_pending++; | |
43dad3d6 DW |
4151 | for (a = st->arrays; a; a = a->next) |
4152 | a->check_degraded = 1; | |
4153 | } | |
e553d2a4 | 4154 | /* add some spares to the metadata */ |
43dad3d6 | 4155 | while (super->add) { |
e553d2a4 DW |
4156 | struct dl *al; |
4157 | ||
43dad3d6 DW |
4158 | al = super->add; |
4159 | super->add = al->next; | |
43dad3d6 DW |
4160 | al->next = super->disks; |
4161 | super->disks = al; | |
e553d2a4 DW |
4162 | dprintf("%s: added %x:%x\n", |
4163 | __func__, al->major, al->minor); | |
43dad3d6 DW |
4164 | } |
4165 | ||
4166 | break; | |
e8319a19 DW |
4167 | } |
4168 | } | |
88758e9d | 4169 | |
8273f55e DW |
4170 | static void imsm_prepare_update(struct supertype *st, |
4171 | struct metadata_update *update) | |
4172 | { | |
949c47a0 | 4173 | /** |
4d7b1503 DW |
4174 | * Allocate space to hold new disk entries, raid-device entries or a new |
4175 | * mpb if necessary. The manager synchronously waits for updates to | |
4176 | * complete in the monitor, so new mpb buffers allocated here can be | |
4177 | * integrated by the monitor thread without worrying about live pointers | |
4178 | * in the manager thread. | |
8273f55e | 4179 | */ |
949c47a0 | 4180 | enum imsm_update_type type = *(enum imsm_update_type *) update->buf; |
4d7b1503 DW |
4181 | struct intel_super *super = st->sb; |
4182 | struct imsm_super *mpb = super->anchor; | |
4183 | size_t buf_len; | |
4184 | size_t len = 0; | |
949c47a0 DW |
4185 | |
4186 | switch (type) { | |
4187 | case update_create_array: { | |
4188 | struct imsm_update_create_array *u = (void *) update->buf; | |
ba2de7ba | 4189 | struct intel_dev *dv; |
54c2c1ea DW |
4190 | struct imsm_dev *dev = &u->dev; |
4191 | struct imsm_map *map = get_imsm_map(dev, 0); | |
4192 | struct dl *dl; | |
4193 | struct disk_info *inf; | |
4194 | int i; | |
4195 | int activate = 0; | |
949c47a0 | 4196 | |
54c2c1ea DW |
4197 | inf = get_disk_info(u); |
4198 | len = sizeof_imsm_dev(dev, 1); | |
ba2de7ba DW |
4199 | /* allocate a new super->devlist entry */ |
4200 | dv = malloc(sizeof(*dv)); | |
4201 | if (dv) { | |
4202 | dv->dev = malloc(len); | |
4203 | if (dv->dev) | |
4204 | update->space = dv; | |
4205 | else { | |
4206 | free(dv); | |
4207 | update->space = NULL; | |
4208 | } | |
4209 | } | |
949c47a0 | 4210 | |
54c2c1ea DW |
4211 | /* count how many spares will be converted to members */ |
4212 | for (i = 0; i < map->num_members; i++) { | |
4213 | dl = serial_to_dl(inf[i].serial, super); | |
4214 | if (!dl) { | |
4215 | /* hmm maybe it failed?, nothing we can do about | |
4216 | * it here | |
4217 | */ | |
4218 | continue; | |
4219 | } | |
4220 | if (count_memberships(dl, super) == 0) | |
4221 | activate++; | |
4222 | } | |
4223 | len += activate * sizeof(struct imsm_disk); | |
949c47a0 DW |
4224 | break; |
4225 | default: | |
4226 | break; | |
4227 | } | |
4228 | } | |
8273f55e | 4229 | |
4d7b1503 DW |
4230 | /* check if we need a larger metadata buffer */ |
4231 | if (super->next_buf) | |
4232 | buf_len = super->next_len; | |
4233 | else | |
4234 | buf_len = super->len; | |
4235 | ||
4236 | if (__le32_to_cpu(mpb->mpb_size) + len > buf_len) { | |
4237 | /* ok we need a larger buf than what is currently allocated | |
4238 | * if this allocation fails process_update will notice that | |
4239 | * ->next_len is set and ->next_buf is NULL | |
4240 | */ | |
4241 | buf_len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + len, 512); | |
4242 | if (super->next_buf) | |
4243 | free(super->next_buf); | |
4244 | ||
4245 | super->next_len = buf_len; | |
c8151cbc | 4246 | if (posix_memalign(&super->next_buf, 512, buf_len) != 0) |
4d7b1503 DW |
4247 | super->next_buf = NULL; |
4248 | } | |
8273f55e DW |
4249 | } |
4250 | ||
ae6aad82 | 4251 | /* must be called while manager is quiesced */ |
24565c9a | 4252 | static void imsm_delete(struct intel_super *super, struct dl **dlp, int index) |
ae6aad82 DW |
4253 | { |
4254 | struct imsm_super *mpb = super->anchor; | |
ae6aad82 DW |
4255 | struct dl *iter; |
4256 | struct imsm_dev *dev; | |
4257 | struct imsm_map *map; | |
24565c9a DW |
4258 | int i, j, num_members; |
4259 | __u32 ord; | |
ae6aad82 | 4260 | |
24565c9a DW |
4261 | dprintf("%s: deleting device[%d] from imsm_super\n", |
4262 | __func__, index); | |
ae6aad82 DW |
4263 | |
4264 | /* shift all indexes down one */ | |
4265 | for (iter = super->disks; iter; iter = iter->next) | |
24565c9a | 4266 | if (iter->index > index) |
ae6aad82 | 4267 | iter->index--; |
47ee5a45 DW |
4268 | for (iter = super->missing; iter; iter = iter->next) |
4269 | if (iter->index > index) | |
4270 | iter->index--; | |
ae6aad82 DW |
4271 | |
4272 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
4273 | dev = get_imsm_dev(super, i); | |
4274 | map = get_imsm_map(dev, 0); | |
24565c9a DW |
4275 | num_members = map->num_members; |
4276 | for (j = 0; j < num_members; j++) { | |
4277 | /* update ord entries being careful not to propagate | |
4278 | * ord-flags to the first map | |
4279 | */ | |
4280 | ord = get_imsm_ord_tbl_ent(dev, j); | |
ae6aad82 | 4281 | |
24565c9a DW |
4282 | if (ord_to_idx(ord) <= index) |
4283 | continue; | |
ae6aad82 | 4284 | |
24565c9a DW |
4285 | map = get_imsm_map(dev, 0); |
4286 | set_imsm_ord_tbl_ent(map, j, ord_to_idx(ord - 1)); | |
4287 | map = get_imsm_map(dev, 1); | |
4288 | if (map) | |
4289 | set_imsm_ord_tbl_ent(map, j, ord - 1); | |
ae6aad82 DW |
4290 | } |
4291 | } | |
4292 | ||
4293 | mpb->num_disks--; | |
4294 | super->updates_pending++; | |
24565c9a DW |
4295 | if (*dlp) { |
4296 | struct dl *dl = *dlp; | |
4297 | ||
4298 | *dlp = (*dlp)->next; | |
4299 | __free_imsm_disk(dl); | |
4300 | } | |
ae6aad82 | 4301 | } |
0e600426 | 4302 | #endif /* MDASSEMBLE */ |
ae6aad82 | 4303 | |
cdddbdbc DW |
4304 | struct superswitch super_imsm = { |
4305 | #ifndef MDASSEMBLE | |
4306 | .examine_super = examine_super_imsm, | |
4307 | .brief_examine_super = brief_examine_super_imsm, | |
4308 | .detail_super = detail_super_imsm, | |
4309 | .brief_detail_super = brief_detail_super_imsm, | |
bf5a934a | 4310 | .write_init_super = write_init_super_imsm, |
0e600426 N |
4311 | .validate_geometry = validate_geometry_imsm, |
4312 | .add_to_super = add_to_super_imsm, | |
d665cc31 | 4313 | .detail_platform = detail_platform_imsm, |
cdddbdbc DW |
4314 | #endif |
4315 | .match_home = match_home_imsm, | |
4316 | .uuid_from_super= uuid_from_super_imsm, | |
4317 | .getinfo_super = getinfo_super_imsm, | |
4318 | .update_super = update_super_imsm, | |
4319 | ||
4320 | .avail_size = avail_size_imsm, | |
4321 | ||
4322 | .compare_super = compare_super_imsm, | |
4323 | ||
4324 | .load_super = load_super_imsm, | |
bf5a934a | 4325 | .init_super = init_super_imsm, |
cdddbdbc DW |
4326 | .store_super = store_zero_imsm, |
4327 | .free_super = free_super_imsm, | |
4328 | .match_metadata_desc = match_metadata_desc_imsm, | |
bf5a934a | 4329 | .container_content = container_content_imsm, |
a18a888e | 4330 | .default_layout = imsm_level_to_layout, |
cdddbdbc | 4331 | |
cdddbdbc | 4332 | .external = 1, |
4cce4069 | 4333 | .name = "imsm", |
845dea95 | 4334 | |
0e600426 | 4335 | #ifndef MDASSEMBLE |
845dea95 NB |
4336 | /* for mdmon */ |
4337 | .open_new = imsm_open_new, | |
4338 | .load_super = load_super_imsm, | |
ed9d66aa | 4339 | .set_array_state= imsm_set_array_state, |
845dea95 NB |
4340 | .set_disk = imsm_set_disk, |
4341 | .sync_metadata = imsm_sync_metadata, | |
88758e9d | 4342 | .activate_spare = imsm_activate_spare, |
e8319a19 | 4343 | .process_update = imsm_process_update, |
8273f55e | 4344 | .prepare_update = imsm_prepare_update, |
0e600426 | 4345 | #endif /* MDASSEMBLE */ |
cdddbdbc | 4346 | }; |