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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 | |
979d38be | 56 | #define SECT_PER_MB_SHIFT 11 |
cdddbdbc DW |
57 | |
58 | /* Disk configuration info. */ | |
59 | #define IMSM_MAX_DEVICES 255 | |
60 | struct imsm_disk { | |
61 | __u8 serial[MAX_RAID_SERIAL_LEN];/* 0xD8 - 0xE7 ascii serial number */ | |
62 | __u32 total_blocks; /* 0xE8 - 0xEB total blocks */ | |
63 | __u32 scsi_id; /* 0xEC - 0xEF scsi ID */ | |
f2f27e63 DW |
64 | #define SPARE_DISK __cpu_to_le32(0x01) /* Spare */ |
65 | #define CONFIGURED_DISK __cpu_to_le32(0x02) /* Member of some RaidDev */ | |
66 | #define FAILED_DISK __cpu_to_le32(0x04) /* Permanent failure */ | |
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 */ | |
252d23c0 | 91 | __u8 ddf; |
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 | |
1484e727 | 108 | #define MIGR_REPAIR 5 |
cdddbdbc DW |
109 | __u8 migr_type; /* Initializing, Rebuilding, ... */ |
110 | __u8 dirty; | |
fe7ed8cb DW |
111 | __u8 fs_state; /* fast-sync state for CnG (0xff == disabled) */ |
112 | __u16 verify_errors; /* number of mismatches */ | |
113 | __u16 bad_blocks; /* number of bad blocks during verify */ | |
114 | __u32 filler[4]; | |
cdddbdbc DW |
115 | struct imsm_map map[1]; |
116 | /* here comes another one if migr_state */ | |
117 | } __attribute__ ((packed)); | |
118 | ||
119 | struct imsm_dev { | |
fe7ed8cb | 120 | __u8 volume[MAX_RAID_SERIAL_LEN]; |
cdddbdbc DW |
121 | __u32 size_low; |
122 | __u32 size_high; | |
fe7ed8cb DW |
123 | #define DEV_BOOTABLE __cpu_to_le32(0x01) |
124 | #define DEV_BOOT_DEVICE __cpu_to_le32(0x02) | |
125 | #define DEV_READ_COALESCING __cpu_to_le32(0x04) | |
126 | #define DEV_WRITE_COALESCING __cpu_to_le32(0x08) | |
127 | #define DEV_LAST_SHUTDOWN_DIRTY __cpu_to_le32(0x10) | |
128 | #define DEV_HIDDEN_AT_BOOT __cpu_to_le32(0x20) | |
129 | #define DEV_CURRENTLY_HIDDEN __cpu_to_le32(0x40) | |
130 | #define DEV_VERIFY_AND_FIX __cpu_to_le32(0x80) | |
131 | #define DEV_MAP_STATE_UNINIT __cpu_to_le32(0x100) | |
132 | #define DEV_NO_AUTO_RECOVERY __cpu_to_le32(0x200) | |
133 | #define DEV_CLONE_N_GO __cpu_to_le32(0x400) | |
134 | #define DEV_CLONE_MAN_SYNC __cpu_to_le32(0x800) | |
135 | #define DEV_CNG_MASTER_DISK_NUM __cpu_to_le32(0x1000) | |
cdddbdbc DW |
136 | __u32 status; /* Persistent RaidDev status */ |
137 | __u32 reserved_blocks; /* Reserved blocks at beginning of volume */ | |
fe7ed8cb DW |
138 | __u8 migr_priority; |
139 | __u8 num_sub_vols; | |
140 | __u8 tid; | |
141 | __u8 cng_master_disk; | |
142 | __u16 cache_policy; | |
143 | __u8 cng_state; | |
144 | __u8 cng_sub_state; | |
145 | #define IMSM_DEV_FILLERS 10 | |
cdddbdbc DW |
146 | __u32 filler[IMSM_DEV_FILLERS]; |
147 | struct imsm_vol vol; | |
148 | } __attribute__ ((packed)); | |
149 | ||
150 | struct imsm_super { | |
151 | __u8 sig[MAX_SIGNATURE_LENGTH]; /* 0x00 - 0x1F */ | |
152 | __u32 check_sum; /* 0x20 - 0x23 MPB Checksum */ | |
153 | __u32 mpb_size; /* 0x24 - 0x27 Size of MPB */ | |
154 | __u32 family_num; /* 0x28 - 0x2B Checksum from first time this config was written */ | |
155 | __u32 generation_num; /* 0x2C - 0x2F Incremented each time this array's MPB is written */ | |
604b746f JD |
156 | __u32 error_log_size; /* 0x30 - 0x33 in bytes */ |
157 | __u32 attributes; /* 0x34 - 0x37 */ | |
cdddbdbc DW |
158 | __u8 num_disks; /* 0x38 Number of configured disks */ |
159 | __u8 num_raid_devs; /* 0x39 Number of configured volumes */ | |
604b746f JD |
160 | __u8 error_log_pos; /* 0x3A */ |
161 | __u8 fill[1]; /* 0x3B */ | |
162 | __u32 cache_size; /* 0x3c - 0x40 in mb */ | |
163 | __u32 orig_family_num; /* 0x40 - 0x43 original family num */ | |
164 | __u32 pwr_cycle_count; /* 0x44 - 0x47 simulated power cycle count for array */ | |
165 | __u32 bbm_log_size; /* 0x48 - 0x4B - size of bad Block Mgmt Log in bytes */ | |
166 | #define IMSM_FILLERS 35 | |
167 | __u32 filler[IMSM_FILLERS]; /* 0x4C - 0xD7 RAID_MPB_FILLERS */ | |
cdddbdbc DW |
168 | struct imsm_disk disk[1]; /* 0xD8 diskTbl[numDisks] */ |
169 | /* here comes imsm_dev[num_raid_devs] */ | |
604b746f | 170 | /* here comes BBM logs */ |
cdddbdbc DW |
171 | } __attribute__ ((packed)); |
172 | ||
604b746f JD |
173 | #define BBM_LOG_MAX_ENTRIES 254 |
174 | ||
175 | struct bbm_log_entry { | |
176 | __u64 defective_block_start; | |
177 | #define UNREADABLE 0xFFFFFFFF | |
178 | __u32 spare_block_offset; | |
179 | __u16 remapped_marked_count; | |
180 | __u16 disk_ordinal; | |
181 | } __attribute__ ((__packed__)); | |
182 | ||
183 | struct bbm_log { | |
184 | __u32 signature; /* 0xABADB10C */ | |
185 | __u32 entry_count; | |
186 | __u32 reserved_spare_block_count; /* 0 */ | |
187 | __u32 reserved; /* 0xFFFF */ | |
188 | __u64 first_spare_lba; | |
189 | struct bbm_log_entry mapped_block_entries[BBM_LOG_MAX_ENTRIES]; | |
190 | } __attribute__ ((__packed__)); | |
191 | ||
192 | ||
cdddbdbc DW |
193 | #ifndef MDASSEMBLE |
194 | static char *map_state_str[] = { "normal", "uninitialized", "degraded", "failed" }; | |
195 | #endif | |
196 | ||
1484e727 DW |
197 | static __u8 migr_type(struct imsm_dev *dev) |
198 | { | |
199 | if (dev->vol.migr_type == MIGR_VERIFY && | |
200 | dev->status & DEV_VERIFY_AND_FIX) | |
201 | return MIGR_REPAIR; | |
202 | else | |
203 | return dev->vol.migr_type; | |
204 | } | |
205 | ||
206 | static void set_migr_type(struct imsm_dev *dev, __u8 migr_type) | |
207 | { | |
208 | /* for compatibility with older oroms convert MIGR_REPAIR, into | |
209 | * MIGR_VERIFY w/ DEV_VERIFY_AND_FIX status | |
210 | */ | |
211 | if (migr_type == MIGR_REPAIR) { | |
212 | dev->vol.migr_type = MIGR_VERIFY; | |
213 | dev->status |= DEV_VERIFY_AND_FIX; | |
214 | } else { | |
215 | dev->vol.migr_type = migr_type; | |
216 | dev->status &= ~DEV_VERIFY_AND_FIX; | |
217 | } | |
218 | } | |
219 | ||
87eb16df | 220 | static unsigned int sector_count(__u32 bytes) |
cdddbdbc | 221 | { |
87eb16df DW |
222 | return ((bytes + (512-1)) & (~(512-1))) / 512; |
223 | } | |
cdddbdbc | 224 | |
87eb16df DW |
225 | static unsigned int mpb_sectors(struct imsm_super *mpb) |
226 | { | |
227 | return sector_count(__le32_to_cpu(mpb->mpb_size)); | |
cdddbdbc DW |
228 | } |
229 | ||
ba2de7ba DW |
230 | struct intel_dev { |
231 | struct imsm_dev *dev; | |
232 | struct intel_dev *next; | |
f21e18ca | 233 | unsigned index; |
ba2de7ba DW |
234 | }; |
235 | ||
1a64be56 LM |
236 | enum action { |
237 | DISK_REMOVE = 1, | |
238 | DISK_ADD | |
239 | }; | |
cdddbdbc DW |
240 | /* internal representation of IMSM metadata */ |
241 | struct intel_super { | |
242 | union { | |
949c47a0 DW |
243 | void *buf; /* O_DIRECT buffer for reading/writing metadata */ |
244 | struct imsm_super *anchor; /* immovable parameters */ | |
cdddbdbc | 245 | }; |
949c47a0 | 246 | size_t len; /* size of the 'buf' allocation */ |
4d7b1503 DW |
247 | void *next_buf; /* for realloc'ing buf from the manager */ |
248 | size_t next_len; | |
c2c087e6 | 249 | int updates_pending; /* count of pending updates for mdmon */ |
bf5a934a | 250 | int current_vol; /* index of raid device undergoing creation */ |
0dcecb2e | 251 | __u32 create_offset; /* common start for 'current_vol' */ |
148acb7b | 252 | __u32 random; /* random data for seeding new family numbers */ |
ba2de7ba | 253 | struct intel_dev *devlist; |
cdddbdbc DW |
254 | struct dl { |
255 | struct dl *next; | |
256 | int index; | |
257 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
258 | int major, minor; | |
259 | char *devname; | |
b9f594fe | 260 | struct imsm_disk disk; |
cdddbdbc | 261 | int fd; |
0dcecb2e DW |
262 | int extent_cnt; |
263 | struct extent *e; /* for determining freespace @ create */ | |
efb30e7f | 264 | int raiddisk; /* slot to fill in autolayout */ |
1a64be56 | 265 | enum action action; |
cdddbdbc | 266 | } *disks; |
1a64be56 LM |
267 | struct dl *disk_mgmt_list; /* list of disks to add/remove while mdmon |
268 | active */ | |
47ee5a45 | 269 | struct dl *missing; /* disks removed while we weren't looking */ |
43dad3d6 | 270 | struct bbm_log *bbm_log; |
88c32bb1 DW |
271 | const char *hba; /* device path of the raid controller for this metadata */ |
272 | const struct imsm_orom *orom; /* platform firmware support */ | |
a2b97981 DW |
273 | struct intel_super *next; /* (temp) list for disambiguating family_num */ |
274 | }; | |
275 | ||
276 | struct intel_disk { | |
277 | struct imsm_disk disk; | |
278 | #define IMSM_UNKNOWN_OWNER (-1) | |
279 | int owner; | |
280 | struct intel_disk *next; | |
cdddbdbc DW |
281 | }; |
282 | ||
c2c087e6 DW |
283 | struct extent { |
284 | unsigned long long start, size; | |
285 | }; | |
286 | ||
88758e9d DW |
287 | /* definition of messages passed to imsm_process_update */ |
288 | enum imsm_update_type { | |
289 | update_activate_spare, | |
8273f55e | 290 | update_create_array, |
33414a01 | 291 | update_kill_array, |
aa534678 | 292 | update_rename_array, |
1a64be56 | 293 | update_add_remove_disk, |
78b10e66 | 294 | update_reshape_container_disks, |
88758e9d DW |
295 | }; |
296 | ||
297 | struct imsm_update_activate_spare { | |
298 | enum imsm_update_type type; | |
d23fe947 | 299 | struct dl *dl; |
88758e9d DW |
300 | int slot; |
301 | int array; | |
302 | struct imsm_update_activate_spare *next; | |
303 | }; | |
304 | ||
78b10e66 N |
305 | struct geo_params { |
306 | int dev_id; | |
307 | char *dev_name; | |
308 | long long size; | |
309 | int level; | |
310 | int layout; | |
311 | int chunksize; | |
312 | int raid_disks; | |
313 | }; | |
314 | ||
315 | ||
316 | struct imsm_update_reshape { | |
317 | enum imsm_update_type type; | |
318 | int old_raid_disks; | |
319 | int new_raid_disks; | |
d195167d | 320 | int new_disks[1]; /* new_raid_disks - old_raid_disks makedev number */ |
78b10e66 N |
321 | }; |
322 | ||
54c2c1ea DW |
323 | struct disk_info { |
324 | __u8 serial[MAX_RAID_SERIAL_LEN]; | |
325 | }; | |
326 | ||
8273f55e DW |
327 | struct imsm_update_create_array { |
328 | enum imsm_update_type type; | |
8273f55e | 329 | int dev_idx; |
6a3e913e | 330 | struct imsm_dev dev; |
8273f55e DW |
331 | }; |
332 | ||
33414a01 DW |
333 | struct imsm_update_kill_array { |
334 | enum imsm_update_type type; | |
335 | int dev_idx; | |
336 | }; | |
337 | ||
aa534678 DW |
338 | struct imsm_update_rename_array { |
339 | enum imsm_update_type type; | |
340 | __u8 name[MAX_RAID_SERIAL_LEN]; | |
341 | int dev_idx; | |
342 | }; | |
343 | ||
1a64be56 | 344 | struct imsm_update_add_remove_disk { |
43dad3d6 DW |
345 | enum imsm_update_type type; |
346 | }; | |
347 | ||
cdddbdbc DW |
348 | static struct supertype *match_metadata_desc_imsm(char *arg) |
349 | { | |
350 | struct supertype *st; | |
351 | ||
352 | if (strcmp(arg, "imsm") != 0 && | |
353 | strcmp(arg, "default") != 0 | |
354 | ) | |
355 | return NULL; | |
356 | ||
357 | st = malloc(sizeof(*st)); | |
4e9d2186 AW |
358 | if (!st) |
359 | return NULL; | |
ef609477 | 360 | memset(st, 0, sizeof(*st)); |
d1d599ea | 361 | st->container_dev = NoMdDev; |
cdddbdbc DW |
362 | st->ss = &super_imsm; |
363 | st->max_devs = IMSM_MAX_DEVICES; | |
364 | st->minor_version = 0; | |
365 | st->sb = NULL; | |
366 | return st; | |
367 | } | |
368 | ||
0e600426 | 369 | #ifndef MDASSEMBLE |
cdddbdbc DW |
370 | static __u8 *get_imsm_version(struct imsm_super *mpb) |
371 | { | |
372 | return &mpb->sig[MPB_SIG_LEN]; | |
373 | } | |
0e600426 | 374 | #endif |
cdddbdbc | 375 | |
949c47a0 DW |
376 | /* retrieve a disk directly from the anchor when the anchor is known to be |
377 | * up-to-date, currently only at load time | |
378 | */ | |
379 | static struct imsm_disk *__get_imsm_disk(struct imsm_super *mpb, __u8 index) | |
cdddbdbc | 380 | { |
949c47a0 | 381 | if (index >= mpb->num_disks) |
cdddbdbc DW |
382 | return NULL; |
383 | return &mpb->disk[index]; | |
384 | } | |
385 | ||
95d07a2c LM |
386 | /* retrieve the disk description based on a index of the disk |
387 | * in the sub-array | |
388 | */ | |
389 | static struct dl *get_imsm_dl_disk(struct intel_super *super, __u8 index) | |
949c47a0 | 390 | { |
b9f594fe DW |
391 | struct dl *d; |
392 | ||
393 | for (d = super->disks; d; d = d->next) | |
394 | if (d->index == index) | |
95d07a2c LM |
395 | return d; |
396 | ||
397 | return NULL; | |
398 | } | |
399 | /* retrieve a disk from the parsed metadata */ | |
400 | static struct imsm_disk *get_imsm_disk(struct intel_super *super, __u8 index) | |
401 | { | |
402 | struct dl *dl; | |
403 | ||
404 | dl = get_imsm_dl_disk(super, index); | |
405 | if (dl) | |
406 | return &dl->disk; | |
407 | ||
b9f594fe | 408 | return NULL; |
949c47a0 DW |
409 | } |
410 | ||
411 | /* generate a checksum directly from the anchor when the anchor is known to be | |
412 | * up-to-date, currently only at load or write_super after coalescing | |
413 | */ | |
414 | static __u32 __gen_imsm_checksum(struct imsm_super *mpb) | |
cdddbdbc DW |
415 | { |
416 | __u32 end = mpb->mpb_size / sizeof(end); | |
417 | __u32 *p = (__u32 *) mpb; | |
418 | __u32 sum = 0; | |
419 | ||
97f734fd N |
420 | while (end--) { |
421 | sum += __le32_to_cpu(*p); | |
422 | p++; | |
423 | } | |
cdddbdbc DW |
424 | |
425 | return sum - __le32_to_cpu(mpb->check_sum); | |
426 | } | |
427 | ||
a965f303 DW |
428 | static size_t sizeof_imsm_map(struct imsm_map *map) |
429 | { | |
430 | return sizeof(struct imsm_map) + sizeof(__u32) * (map->num_members - 1); | |
431 | } | |
432 | ||
433 | struct imsm_map *get_imsm_map(struct imsm_dev *dev, int second_map) | |
cdddbdbc | 434 | { |
a965f303 DW |
435 | struct imsm_map *map = &dev->vol.map[0]; |
436 | ||
437 | if (second_map && !dev->vol.migr_state) | |
438 | return NULL; | |
439 | else if (second_map) { | |
440 | void *ptr = map; | |
441 | ||
442 | return ptr + sizeof_imsm_map(map); | |
443 | } else | |
444 | return map; | |
445 | ||
446 | } | |
cdddbdbc | 447 | |
3393c6af DW |
448 | /* return the size of the device. |
449 | * migr_state increases the returned size if map[0] were to be duplicated | |
450 | */ | |
451 | static size_t sizeof_imsm_dev(struct imsm_dev *dev, int migr_state) | |
a965f303 DW |
452 | { |
453 | size_t size = sizeof(*dev) - sizeof(struct imsm_map) + | |
454 | sizeof_imsm_map(get_imsm_map(dev, 0)); | |
cdddbdbc DW |
455 | |
456 | /* migrating means an additional map */ | |
a965f303 DW |
457 | if (dev->vol.migr_state) |
458 | size += sizeof_imsm_map(get_imsm_map(dev, 1)); | |
3393c6af DW |
459 | else if (migr_state) |
460 | size += sizeof_imsm_map(get_imsm_map(dev, 0)); | |
cdddbdbc DW |
461 | |
462 | return size; | |
463 | } | |
464 | ||
54c2c1ea DW |
465 | #ifndef MDASSEMBLE |
466 | /* retrieve disk serial number list from a metadata update */ | |
467 | static struct disk_info *get_disk_info(struct imsm_update_create_array *update) | |
468 | { | |
469 | void *u = update; | |
470 | struct disk_info *inf; | |
471 | ||
472 | inf = u + sizeof(*update) - sizeof(struct imsm_dev) + | |
473 | sizeof_imsm_dev(&update->dev, 0); | |
474 | ||
475 | return inf; | |
476 | } | |
477 | #endif | |
478 | ||
949c47a0 | 479 | static struct imsm_dev *__get_imsm_dev(struct imsm_super *mpb, __u8 index) |
cdddbdbc DW |
480 | { |
481 | int offset; | |
482 | int i; | |
483 | void *_mpb = mpb; | |
484 | ||
949c47a0 | 485 | if (index >= mpb->num_raid_devs) |
cdddbdbc DW |
486 | return NULL; |
487 | ||
488 | /* devices start after all disks */ | |
489 | offset = ((void *) &mpb->disk[mpb->num_disks]) - _mpb; | |
490 | ||
491 | for (i = 0; i <= index; i++) | |
492 | if (i == index) | |
493 | return _mpb + offset; | |
494 | else | |
3393c6af | 495 | offset += sizeof_imsm_dev(_mpb + offset, 0); |
cdddbdbc DW |
496 | |
497 | return NULL; | |
498 | } | |
499 | ||
949c47a0 DW |
500 | static struct imsm_dev *get_imsm_dev(struct intel_super *super, __u8 index) |
501 | { | |
ba2de7ba DW |
502 | struct intel_dev *dv; |
503 | ||
949c47a0 DW |
504 | if (index >= super->anchor->num_raid_devs) |
505 | return NULL; | |
ba2de7ba DW |
506 | for (dv = super->devlist; dv; dv = dv->next) |
507 | if (dv->index == index) | |
508 | return dv->dev; | |
509 | return NULL; | |
949c47a0 DW |
510 | } |
511 | ||
98130f40 AK |
512 | /* |
513 | * for second_map: | |
514 | * == 0 get first map | |
515 | * == 1 get second map | |
516 | * == -1 than get map according to the current migr_state | |
517 | */ | |
518 | static __u32 get_imsm_ord_tbl_ent(struct imsm_dev *dev, | |
519 | int slot, | |
520 | int second_map) | |
7eef0453 DW |
521 | { |
522 | struct imsm_map *map; | |
523 | ||
98130f40 AK |
524 | if (second_map == -1) { |
525 | if (dev->vol.migr_state) | |
526 | map = get_imsm_map(dev, 1); | |
527 | else | |
528 | map = get_imsm_map(dev, 0); | |
529 | } else { | |
530 | map = get_imsm_map(dev, second_map); | |
531 | } | |
7eef0453 | 532 | |
ff077194 DW |
533 | /* top byte identifies disk under rebuild */ |
534 | return __le32_to_cpu(map->disk_ord_tbl[slot]); | |
535 | } | |
536 | ||
537 | #define ord_to_idx(ord) (((ord) << 8) >> 8) | |
98130f40 | 538 | static __u32 get_imsm_disk_idx(struct imsm_dev *dev, int slot, int second_map) |
ff077194 | 539 | { |
98130f40 | 540 | __u32 ord = get_imsm_ord_tbl_ent(dev, slot, second_map); |
ff077194 DW |
541 | |
542 | return ord_to_idx(ord); | |
7eef0453 DW |
543 | } |
544 | ||
be73972f DW |
545 | static void set_imsm_ord_tbl_ent(struct imsm_map *map, int slot, __u32 ord) |
546 | { | |
547 | map->disk_ord_tbl[slot] = __cpu_to_le32(ord); | |
548 | } | |
549 | ||
f21e18ca | 550 | static int get_imsm_disk_slot(struct imsm_map *map, unsigned idx) |
620b1713 DW |
551 | { |
552 | int slot; | |
553 | __u32 ord; | |
554 | ||
555 | for (slot = 0; slot < map->num_members; slot++) { | |
556 | ord = __le32_to_cpu(map->disk_ord_tbl[slot]); | |
557 | if (ord_to_idx(ord) == idx) | |
558 | return slot; | |
559 | } | |
560 | ||
561 | return -1; | |
562 | } | |
563 | ||
cdddbdbc DW |
564 | static int get_imsm_raid_level(struct imsm_map *map) |
565 | { | |
566 | if (map->raid_level == 1) { | |
567 | if (map->num_members == 2) | |
568 | return 1; | |
569 | else | |
570 | return 10; | |
571 | } | |
572 | ||
573 | return map->raid_level; | |
574 | } | |
575 | ||
c2c087e6 DW |
576 | static int cmp_extent(const void *av, const void *bv) |
577 | { | |
578 | const struct extent *a = av; | |
579 | const struct extent *b = bv; | |
580 | if (a->start < b->start) | |
581 | return -1; | |
582 | if (a->start > b->start) | |
583 | return 1; | |
584 | return 0; | |
585 | } | |
586 | ||
0dcecb2e | 587 | static int count_memberships(struct dl *dl, struct intel_super *super) |
c2c087e6 | 588 | { |
c2c087e6 | 589 | int memberships = 0; |
620b1713 | 590 | int i; |
c2c087e6 | 591 | |
949c47a0 DW |
592 | for (i = 0; i < super->anchor->num_raid_devs; i++) { |
593 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
a965f303 | 594 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2c087e6 | 595 | |
620b1713 DW |
596 | if (get_imsm_disk_slot(map, dl->index) >= 0) |
597 | memberships++; | |
c2c087e6 | 598 | } |
0dcecb2e DW |
599 | |
600 | return memberships; | |
601 | } | |
602 | ||
603 | static struct extent *get_extents(struct intel_super *super, struct dl *dl) | |
604 | { | |
605 | /* find a list of used extents on the given physical device */ | |
606 | struct extent *rv, *e; | |
620b1713 | 607 | int i; |
0dcecb2e DW |
608 | int memberships = count_memberships(dl, super); |
609 | __u32 reservation = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
610 | ||
c2c087e6 DW |
611 | rv = malloc(sizeof(struct extent) * (memberships + 1)); |
612 | if (!rv) | |
613 | return NULL; | |
614 | e = rv; | |
615 | ||
949c47a0 DW |
616 | for (i = 0; i < super->anchor->num_raid_devs; i++) { |
617 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
a965f303 | 618 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2c087e6 | 619 | |
620b1713 DW |
620 | if (get_imsm_disk_slot(map, dl->index) >= 0) { |
621 | e->start = __le32_to_cpu(map->pba_of_lba0); | |
622 | e->size = __le32_to_cpu(map->blocks_per_member); | |
623 | e++; | |
c2c087e6 DW |
624 | } |
625 | } | |
626 | qsort(rv, memberships, sizeof(*rv), cmp_extent); | |
627 | ||
14e8215b DW |
628 | /* determine the start of the metadata |
629 | * when no raid devices are defined use the default | |
630 | * ...otherwise allow the metadata to truncate the value | |
631 | * as is the case with older versions of imsm | |
632 | */ | |
633 | if (memberships) { | |
634 | struct extent *last = &rv[memberships - 1]; | |
635 | __u32 remainder; | |
636 | ||
637 | remainder = __le32_to_cpu(dl->disk.total_blocks) - | |
638 | (last->start + last->size); | |
dda5855f DW |
639 | /* round down to 1k block to satisfy precision of the kernel |
640 | * 'size' interface | |
641 | */ | |
642 | remainder &= ~1UL; | |
643 | /* make sure remainder is still sane */ | |
f21e18ca | 644 | if (remainder < (unsigned)ROUND_UP(super->len, 512) >> 9) |
dda5855f | 645 | remainder = ROUND_UP(super->len, 512) >> 9; |
14e8215b DW |
646 | if (reservation > remainder) |
647 | reservation = remainder; | |
648 | } | |
649 | e->start = __le32_to_cpu(dl->disk.total_blocks) - reservation; | |
c2c087e6 DW |
650 | e->size = 0; |
651 | return rv; | |
652 | } | |
653 | ||
14e8215b DW |
654 | /* try to determine how much space is reserved for metadata from |
655 | * the last get_extents() entry, otherwise fallback to the | |
656 | * default | |
657 | */ | |
658 | static __u32 imsm_reserved_sectors(struct intel_super *super, struct dl *dl) | |
659 | { | |
660 | struct extent *e; | |
661 | int i; | |
662 | __u32 rv; | |
663 | ||
664 | /* for spares just return a minimal reservation which will grow | |
665 | * once the spare is picked up by an array | |
666 | */ | |
667 | if (dl->index == -1) | |
668 | return MPB_SECTOR_CNT; | |
669 | ||
670 | e = get_extents(super, dl); | |
671 | if (!e) | |
672 | return MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
673 | ||
674 | /* scroll to last entry */ | |
675 | for (i = 0; e[i].size; i++) | |
676 | continue; | |
677 | ||
678 | rv = __le32_to_cpu(dl->disk.total_blocks) - e[i].start; | |
679 | ||
680 | free(e); | |
681 | ||
682 | return rv; | |
683 | } | |
684 | ||
25ed7e59 DW |
685 | static int is_spare(struct imsm_disk *disk) |
686 | { | |
687 | return (disk->status & SPARE_DISK) == SPARE_DISK; | |
688 | } | |
689 | ||
690 | static int is_configured(struct imsm_disk *disk) | |
691 | { | |
692 | return (disk->status & CONFIGURED_DISK) == CONFIGURED_DISK; | |
693 | } | |
694 | ||
695 | static int is_failed(struct imsm_disk *disk) | |
696 | { | |
697 | return (disk->status & FAILED_DISK) == FAILED_DISK; | |
698 | } | |
699 | ||
80e7f8c3 AC |
700 | /* Return minimum size of a spare that can be used in this array*/ |
701 | static unsigned long long min_acceptable_spare_size_imsm(struct supertype *st) | |
702 | { | |
703 | struct intel_super *super = st->sb; | |
704 | struct dl *dl; | |
705 | struct extent *e; | |
706 | int i; | |
707 | unsigned long long rv = 0; | |
708 | ||
709 | if (!super) | |
710 | return rv; | |
711 | /* find first active disk in array */ | |
712 | dl = super->disks; | |
713 | while (dl && (is_failed(&dl->disk) || dl->index == -1)) | |
714 | dl = dl->next; | |
715 | if (!dl) | |
716 | return rv; | |
717 | /* find last lba used by subarrays */ | |
718 | e = get_extents(super, dl); | |
719 | if (!e) | |
720 | return rv; | |
721 | for (i = 0; e[i].size; i++) | |
722 | continue; | |
723 | if (i > 0) | |
724 | rv = e[i-1].start + e[i-1].size; | |
725 | free(e); | |
726 | /* add the amount of space needed for metadata */ | |
727 | rv = rv + MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
728 | return rv * 512; | |
729 | } | |
730 | ||
1799c9e8 | 731 | #ifndef MDASSEMBLE |
1e5c6983 DW |
732 | static __u64 blocks_per_migr_unit(struct imsm_dev *dev); |
733 | ||
44470971 | 734 | static void print_imsm_dev(struct imsm_dev *dev, char *uuid, int disk_idx) |
cdddbdbc DW |
735 | { |
736 | __u64 sz; | |
0d80bb2f | 737 | int slot, i; |
a965f303 | 738 | struct imsm_map *map = get_imsm_map(dev, 0); |
dd8bcb3b | 739 | struct imsm_map *map2 = get_imsm_map(dev, 1); |
b10b37b8 | 740 | __u32 ord; |
cdddbdbc DW |
741 | |
742 | printf("\n"); | |
1e7bc0ed | 743 | printf("[%.16s]:\n", dev->volume); |
44470971 | 744 | printf(" UUID : %s\n", uuid); |
dd8bcb3b AK |
745 | printf(" RAID Level : %d", get_imsm_raid_level(map)); |
746 | if (map2) | |
747 | printf(" <-- %d", get_imsm_raid_level(map2)); | |
748 | printf("\n"); | |
749 | printf(" Members : %d", map->num_members); | |
750 | if (map2) | |
751 | printf(" <-- %d", map2->num_members); | |
752 | printf("\n"); | |
0d80bb2f DW |
753 | printf(" Slots : ["); |
754 | for (i = 0; i < map->num_members; i++) { | |
dd8bcb3b | 755 | ord = get_imsm_ord_tbl_ent(dev, i, 0); |
0d80bb2f DW |
756 | printf("%s", ord & IMSM_ORD_REBUILD ? "_" : "U"); |
757 | } | |
dd8bcb3b AK |
758 | printf("]"); |
759 | if (map2) { | |
760 | printf(" <-- ["); | |
761 | for (i = 0; i < map2->num_members; i++) { | |
762 | ord = get_imsm_ord_tbl_ent(dev, i, 1); | |
763 | printf("%s", ord & IMSM_ORD_REBUILD ? "_" : "U"); | |
764 | } | |
765 | printf("]"); | |
766 | } | |
767 | printf("\n"); | |
620b1713 DW |
768 | slot = get_imsm_disk_slot(map, disk_idx); |
769 | if (slot >= 0) { | |
98130f40 | 770 | ord = get_imsm_ord_tbl_ent(dev, slot, -1); |
b10b37b8 DW |
771 | printf(" This Slot : %d%s\n", slot, |
772 | ord & IMSM_ORD_REBUILD ? " (out-of-sync)" : ""); | |
773 | } else | |
cdddbdbc DW |
774 | printf(" This Slot : ?\n"); |
775 | sz = __le32_to_cpu(dev->size_high); | |
776 | sz <<= 32; | |
777 | sz += __le32_to_cpu(dev->size_low); | |
778 | printf(" Array Size : %llu%s\n", (unsigned long long)sz, | |
779 | human_size(sz * 512)); | |
780 | sz = __le32_to_cpu(map->blocks_per_member); | |
781 | printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz, | |
782 | human_size(sz * 512)); | |
783 | printf(" Sector Offset : %u\n", | |
784 | __le32_to_cpu(map->pba_of_lba0)); | |
785 | printf(" Num Stripes : %u\n", | |
786 | __le32_to_cpu(map->num_data_stripes)); | |
dd8bcb3b | 787 | printf(" Chunk Size : %u KiB", |
cdddbdbc | 788 | __le16_to_cpu(map->blocks_per_strip) / 2); |
dd8bcb3b AK |
789 | if (map2) |
790 | printf(" <-- %u KiB", | |
791 | __le16_to_cpu(map2->blocks_per_strip) / 2); | |
792 | printf("\n"); | |
cdddbdbc | 793 | printf(" Reserved : %d\n", __le32_to_cpu(dev->reserved_blocks)); |
8655a7b1 | 794 | printf(" Migrate State : "); |
1484e727 DW |
795 | if (dev->vol.migr_state) { |
796 | if (migr_type(dev) == MIGR_INIT) | |
8655a7b1 | 797 | printf("initialize\n"); |
1484e727 | 798 | else if (migr_type(dev) == MIGR_REBUILD) |
8655a7b1 | 799 | printf("rebuild\n"); |
1484e727 | 800 | else if (migr_type(dev) == MIGR_VERIFY) |
8655a7b1 | 801 | printf("check\n"); |
1484e727 | 802 | else if (migr_type(dev) == MIGR_GEN_MIGR) |
8655a7b1 | 803 | printf("general migration\n"); |
1484e727 | 804 | else if (migr_type(dev) == MIGR_STATE_CHANGE) |
8655a7b1 | 805 | printf("state change\n"); |
1484e727 | 806 | else if (migr_type(dev) == MIGR_REPAIR) |
8655a7b1 | 807 | printf("repair\n"); |
1484e727 | 808 | else |
8655a7b1 DW |
809 | printf("<unknown:%d>\n", migr_type(dev)); |
810 | } else | |
811 | printf("idle\n"); | |
3393c6af DW |
812 | printf(" Map State : %s", map_state_str[map->map_state]); |
813 | if (dev->vol.migr_state) { | |
814 | struct imsm_map *map = get_imsm_map(dev, 1); | |
1e5c6983 | 815 | |
b10b37b8 | 816 | printf(" <-- %s", map_state_str[map->map_state]); |
1e5c6983 DW |
817 | printf("\n Checkpoint : %u (%llu)", |
818 | __le32_to_cpu(dev->vol.curr_migr_unit), | |
94fcb80a | 819 | (unsigned long long)blocks_per_migr_unit(dev)); |
3393c6af DW |
820 | } |
821 | printf("\n"); | |
cdddbdbc | 822 | printf(" Dirty State : %s\n", dev->vol.dirty ? "dirty" : "clean"); |
cdddbdbc DW |
823 | } |
824 | ||
14e8215b | 825 | static void print_imsm_disk(struct imsm_super *mpb, int index, __u32 reserved) |
cdddbdbc | 826 | { |
949c47a0 | 827 | struct imsm_disk *disk = __get_imsm_disk(mpb, index); |
1f24f035 | 828 | char str[MAX_RAID_SERIAL_LEN + 1]; |
cdddbdbc DW |
829 | __u64 sz; |
830 | ||
d362da3d | 831 | if (index < 0 || !disk) |
e9d82038 DW |
832 | return; |
833 | ||
cdddbdbc | 834 | printf("\n"); |
1f24f035 | 835 | snprintf(str, MAX_RAID_SERIAL_LEN + 1, "%s", disk->serial); |
cdddbdbc | 836 | printf(" Disk%02d Serial : %s\n", index, str); |
25ed7e59 DW |
837 | printf(" State :%s%s%s\n", is_spare(disk) ? " spare" : "", |
838 | is_configured(disk) ? " active" : "", | |
839 | is_failed(disk) ? " failed" : ""); | |
cdddbdbc | 840 | printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id)); |
14e8215b | 841 | sz = __le32_to_cpu(disk->total_blocks) - reserved; |
cdddbdbc DW |
842 | printf(" Usable Size : %llu%s\n", (unsigned long long)sz, |
843 | human_size(sz * 512)); | |
844 | } | |
845 | ||
a5d85af7 | 846 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info, char *map); |
44470971 | 847 | |
cdddbdbc DW |
848 | static void examine_super_imsm(struct supertype *st, char *homehost) |
849 | { | |
850 | struct intel_super *super = st->sb; | |
949c47a0 | 851 | struct imsm_super *mpb = super->anchor; |
cdddbdbc DW |
852 | char str[MAX_SIGNATURE_LENGTH]; |
853 | int i; | |
27fd6274 DW |
854 | struct mdinfo info; |
855 | char nbuf[64]; | |
cdddbdbc | 856 | __u32 sum; |
14e8215b | 857 | __u32 reserved = imsm_reserved_sectors(super, super->disks); |
94827db3 | 858 | struct dl *dl; |
27fd6274 | 859 | |
cdddbdbc DW |
860 | snprintf(str, MPB_SIG_LEN, "%s", mpb->sig); |
861 | printf(" Magic : %s\n", str); | |
862 | snprintf(str, strlen(MPB_VERSION_RAID0), "%s", get_imsm_version(mpb)); | |
863 | printf(" Version : %s\n", get_imsm_version(mpb)); | |
148acb7b | 864 | printf(" Orig Family : %08x\n", __le32_to_cpu(mpb->orig_family_num)); |
cdddbdbc DW |
865 | printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num)); |
866 | printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num)); | |
a5d85af7 | 867 | getinfo_super_imsm(st, &info, NULL); |
ae2bfd4e | 868 | fname_from_uuid(st, &info, nbuf, ':'); |
27fd6274 | 869 | printf(" UUID : %s\n", nbuf + 5); |
cdddbdbc DW |
870 | sum = __le32_to_cpu(mpb->check_sum); |
871 | printf(" Checksum : %08x %s\n", sum, | |
949c47a0 | 872 | __gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect"); |
87eb16df | 873 | printf(" MPB Sectors : %d\n", mpb_sectors(mpb)); |
cdddbdbc DW |
874 | printf(" Disks : %d\n", mpb->num_disks); |
875 | printf(" RAID Devices : %d\n", mpb->num_raid_devs); | |
14e8215b | 876 | print_imsm_disk(mpb, super->disks->index, reserved); |
604b746f JD |
877 | if (super->bbm_log) { |
878 | struct bbm_log *log = super->bbm_log; | |
879 | ||
880 | printf("\n"); | |
881 | printf("Bad Block Management Log:\n"); | |
882 | printf(" Log Size : %d\n", __le32_to_cpu(mpb->bbm_log_size)); | |
883 | printf(" Signature : %x\n", __le32_to_cpu(log->signature)); | |
884 | printf(" Entry Count : %d\n", __le32_to_cpu(log->entry_count)); | |
885 | printf(" Spare Blocks : %d\n", __le32_to_cpu(log->reserved_spare_block_count)); | |
13a3b65d N |
886 | printf(" First Spare : %llx\n", |
887 | (unsigned long long) __le64_to_cpu(log->first_spare_lba)); | |
604b746f | 888 | } |
44470971 DW |
889 | for (i = 0; i < mpb->num_raid_devs; i++) { |
890 | struct mdinfo info; | |
891 | struct imsm_dev *dev = __get_imsm_dev(mpb, i); | |
892 | ||
893 | super->current_vol = i; | |
a5d85af7 | 894 | getinfo_super_imsm(st, &info, NULL); |
ae2bfd4e | 895 | fname_from_uuid(st, &info, nbuf, ':'); |
44470971 DW |
896 | print_imsm_dev(dev, nbuf + 5, super->disks->index); |
897 | } | |
cdddbdbc DW |
898 | for (i = 0; i < mpb->num_disks; i++) { |
899 | if (i == super->disks->index) | |
900 | continue; | |
14e8215b | 901 | print_imsm_disk(mpb, i, reserved); |
cdddbdbc | 902 | } |
94827db3 N |
903 | for (dl = super->disks ; dl; dl = dl->next) { |
904 | struct imsm_disk *disk; | |
905 | char str[MAX_RAID_SERIAL_LEN + 1]; | |
906 | __u64 sz; | |
907 | ||
908 | if (dl->index >= 0) | |
909 | continue; | |
910 | ||
911 | disk = &dl->disk; | |
912 | printf("\n"); | |
913 | snprintf(str, MAX_RAID_SERIAL_LEN + 1, "%s", disk->serial); | |
914 | printf(" Disk Serial : %s\n", str); | |
915 | printf(" State :%s%s%s\n", is_spare(disk) ? " spare" : "", | |
916 | is_configured(disk) ? " active" : "", | |
917 | is_failed(disk) ? " failed" : ""); | |
918 | printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id)); | |
919 | sz = __le32_to_cpu(disk->total_blocks) - reserved; | |
920 | printf(" Usable Size : %llu%s\n", (unsigned long long)sz, | |
921 | human_size(sz * 512)); | |
922 | } | |
cdddbdbc DW |
923 | } |
924 | ||
061f2c6a | 925 | static void brief_examine_super_imsm(struct supertype *st, int verbose) |
cdddbdbc | 926 | { |
27fd6274 | 927 | /* We just write a generic IMSM ARRAY entry */ |
ff54de6e N |
928 | struct mdinfo info; |
929 | char nbuf[64]; | |
1e7bc0ed | 930 | struct intel_super *super = st->sb; |
1e7bc0ed | 931 | |
0d5a423f DW |
932 | if (!super->anchor->num_raid_devs) { |
933 | printf("ARRAY metadata=imsm\n"); | |
1e7bc0ed | 934 | return; |
0d5a423f | 935 | } |
ff54de6e | 936 | |
a5d85af7 | 937 | getinfo_super_imsm(st, &info, NULL); |
4737ae25 N |
938 | fname_from_uuid(st, &info, nbuf, ':'); |
939 | printf("ARRAY metadata=imsm UUID=%s\n", nbuf + 5); | |
940 | } | |
941 | ||
942 | static void brief_examine_subarrays_imsm(struct supertype *st, int verbose) | |
943 | { | |
944 | /* We just write a generic IMSM ARRAY entry */ | |
945 | struct mdinfo info; | |
946 | char nbuf[64]; | |
947 | char nbuf1[64]; | |
948 | struct intel_super *super = st->sb; | |
949 | int i; | |
950 | ||
951 | if (!super->anchor->num_raid_devs) | |
952 | return; | |
953 | ||
a5d85af7 | 954 | getinfo_super_imsm(st, &info, NULL); |
ae2bfd4e | 955 | fname_from_uuid(st, &info, nbuf, ':'); |
1e7bc0ed DW |
956 | for (i = 0; i < super->anchor->num_raid_devs; i++) { |
957 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
958 | ||
959 | super->current_vol = i; | |
a5d85af7 | 960 | getinfo_super_imsm(st, &info, NULL); |
ae2bfd4e | 961 | fname_from_uuid(st, &info, nbuf1, ':'); |
1124b3cf | 962 | printf("ARRAY /dev/md/%.16s container=%s member=%d UUID=%s\n", |
cf8de691 | 963 | dev->volume, nbuf + 5, i, nbuf1 + 5); |
1e7bc0ed | 964 | } |
cdddbdbc DW |
965 | } |
966 | ||
9d84c8ea DW |
967 | static void export_examine_super_imsm(struct supertype *st) |
968 | { | |
969 | struct intel_super *super = st->sb; | |
970 | struct imsm_super *mpb = super->anchor; | |
971 | struct mdinfo info; | |
972 | char nbuf[64]; | |
973 | ||
a5d85af7 | 974 | getinfo_super_imsm(st, &info, NULL); |
9d84c8ea DW |
975 | fname_from_uuid(st, &info, nbuf, ':'); |
976 | printf("MD_METADATA=imsm\n"); | |
977 | printf("MD_LEVEL=container\n"); | |
978 | printf("MD_UUID=%s\n", nbuf+5); | |
979 | printf("MD_DEVICES=%u\n", mpb->num_disks); | |
980 | } | |
981 | ||
cdddbdbc DW |
982 | static void detail_super_imsm(struct supertype *st, char *homehost) |
983 | { | |
3ebe00a1 DW |
984 | struct mdinfo info; |
985 | char nbuf[64]; | |
986 | ||
a5d85af7 | 987 | getinfo_super_imsm(st, &info, NULL); |
ae2bfd4e | 988 | fname_from_uuid(st, &info, nbuf, ':'); |
3ebe00a1 | 989 | printf("\n UUID : %s\n", nbuf + 5); |
cdddbdbc DW |
990 | } |
991 | ||
992 | static void brief_detail_super_imsm(struct supertype *st) | |
993 | { | |
ff54de6e N |
994 | struct mdinfo info; |
995 | char nbuf[64]; | |
a5d85af7 | 996 | getinfo_super_imsm(st, &info, NULL); |
ae2bfd4e | 997 | fname_from_uuid(st, &info, nbuf, ':'); |
ff54de6e | 998 | printf(" UUID=%s", nbuf + 5); |
cdddbdbc | 999 | } |
d665cc31 DW |
1000 | |
1001 | static int imsm_read_serial(int fd, char *devname, __u8 *serial); | |
1002 | static void fd2devname(int fd, char *name); | |
1003 | ||
1004 | static int imsm_enumerate_ports(const char *hba_path, int port_count, int host_base, int verbose) | |
1005 | { | |
1006 | /* dump an unsorted list of devices attached to ahci, as well as | |
1007 | * non-connected ports | |
1008 | */ | |
1009 | int hba_len = strlen(hba_path) + 1; | |
1010 | struct dirent *ent; | |
1011 | DIR *dir; | |
1012 | char *path = NULL; | |
1013 | int err = 0; | |
1014 | unsigned long port_mask = (1 << port_count) - 1; | |
1015 | ||
f21e18ca | 1016 | if (port_count > (int)sizeof(port_mask) * 8) { |
d665cc31 DW |
1017 | if (verbose) |
1018 | fprintf(stderr, Name ": port_count %d out of range\n", port_count); | |
1019 | return 2; | |
1020 | } | |
1021 | ||
1022 | /* scroll through /sys/dev/block looking for devices attached to | |
1023 | * this hba | |
1024 | */ | |
1025 | dir = opendir("/sys/dev/block"); | |
1026 | for (ent = dir ? readdir(dir) : NULL; ent; ent = readdir(dir)) { | |
1027 | int fd; | |
1028 | char model[64]; | |
1029 | char vendor[64]; | |
1030 | char buf[1024]; | |
1031 | int major, minor; | |
1032 | char *device; | |
1033 | char *c; | |
1034 | int port; | |
1035 | int type; | |
1036 | ||
1037 | if (sscanf(ent->d_name, "%d:%d", &major, &minor) != 2) | |
1038 | continue; | |
1039 | path = devt_to_devpath(makedev(major, minor)); | |
1040 | if (!path) | |
1041 | continue; | |
1042 | if (!path_attached_to_hba(path, hba_path)) { | |
1043 | free(path); | |
1044 | path = NULL; | |
1045 | continue; | |
1046 | } | |
1047 | ||
1048 | /* retrieve the scsi device type */ | |
1049 | if (asprintf(&device, "/sys/dev/block/%d:%d/device/xxxxxxx", major, minor) < 0) { | |
1050 | if (verbose) | |
1051 | fprintf(stderr, Name ": failed to allocate 'device'\n"); | |
1052 | err = 2; | |
1053 | break; | |
1054 | } | |
1055 | sprintf(device, "/sys/dev/block/%d:%d/device/type", major, minor); | |
1056 | if (load_sys(device, buf) != 0) { | |
1057 | if (verbose) | |
1058 | fprintf(stderr, Name ": failed to read device type for %s\n", | |
1059 | path); | |
1060 | err = 2; | |
1061 | free(device); | |
1062 | break; | |
1063 | } | |
1064 | type = strtoul(buf, NULL, 10); | |
1065 | ||
1066 | /* if it's not a disk print the vendor and model */ | |
1067 | if (!(type == 0 || type == 7 || type == 14)) { | |
1068 | vendor[0] = '\0'; | |
1069 | model[0] = '\0'; | |
1070 | sprintf(device, "/sys/dev/block/%d:%d/device/vendor", major, minor); | |
1071 | if (load_sys(device, buf) == 0) { | |
1072 | strncpy(vendor, buf, sizeof(vendor)); | |
1073 | vendor[sizeof(vendor) - 1] = '\0'; | |
1074 | c = (char *) &vendor[sizeof(vendor) - 1]; | |
1075 | while (isspace(*c) || *c == '\0') | |
1076 | *c-- = '\0'; | |
1077 | ||
1078 | } | |
1079 | sprintf(device, "/sys/dev/block/%d:%d/device/model", major, minor); | |
1080 | if (load_sys(device, buf) == 0) { | |
1081 | strncpy(model, buf, sizeof(model)); | |
1082 | model[sizeof(model) - 1] = '\0'; | |
1083 | c = (char *) &model[sizeof(model) - 1]; | |
1084 | while (isspace(*c) || *c == '\0') | |
1085 | *c-- = '\0'; | |
1086 | } | |
1087 | ||
1088 | if (vendor[0] && model[0]) | |
1089 | sprintf(buf, "%.64s %.64s", vendor, model); | |
1090 | else | |
1091 | switch (type) { /* numbers from hald/linux/device.c */ | |
1092 | case 1: sprintf(buf, "tape"); break; | |
1093 | case 2: sprintf(buf, "printer"); break; | |
1094 | case 3: sprintf(buf, "processor"); break; | |
1095 | case 4: | |
1096 | case 5: sprintf(buf, "cdrom"); break; | |
1097 | case 6: sprintf(buf, "scanner"); break; | |
1098 | case 8: sprintf(buf, "media_changer"); break; | |
1099 | case 9: sprintf(buf, "comm"); break; | |
1100 | case 12: sprintf(buf, "raid"); break; | |
1101 | default: sprintf(buf, "unknown"); | |
1102 | } | |
1103 | } else | |
1104 | buf[0] = '\0'; | |
1105 | free(device); | |
1106 | ||
1107 | /* chop device path to 'host%d' and calculate the port number */ | |
1108 | c = strchr(&path[hba_len], '/'); | |
4e5e717d AW |
1109 | if (!c) { |
1110 | if (verbose) | |
1111 | fprintf(stderr, Name ": %s - invalid path name\n", path + hba_len); | |
1112 | err = 2; | |
1113 | break; | |
1114 | } | |
d665cc31 DW |
1115 | *c = '\0'; |
1116 | if (sscanf(&path[hba_len], "host%d", &port) == 1) | |
1117 | port -= host_base; | |
1118 | else { | |
1119 | if (verbose) { | |
1120 | *c = '/'; /* repair the full string */ | |
1121 | fprintf(stderr, Name ": failed to determine port number for %s\n", | |
1122 | path); | |
1123 | } | |
1124 | err = 2; | |
1125 | break; | |
1126 | } | |
1127 | ||
1128 | /* mark this port as used */ | |
1129 | port_mask &= ~(1 << port); | |
1130 | ||
1131 | /* print out the device information */ | |
1132 | if (buf[0]) { | |
1133 | printf(" Port%d : - non-disk device (%s) -\n", port, buf); | |
1134 | continue; | |
1135 | } | |
1136 | ||
1137 | fd = dev_open(ent->d_name, O_RDONLY); | |
1138 | if (fd < 0) | |
1139 | printf(" Port%d : - disk info unavailable -\n", port); | |
1140 | else { | |
1141 | fd2devname(fd, buf); | |
1142 | printf(" Port%d : %s", port, buf); | |
1143 | if (imsm_read_serial(fd, NULL, (__u8 *) buf) == 0) | |
1144 | printf(" (%s)\n", buf); | |
1145 | else | |
1146 | printf("()\n"); | |
1147 | } | |
1148 | close(fd); | |
1149 | free(path); | |
1150 | path = NULL; | |
1151 | } | |
1152 | if (path) | |
1153 | free(path); | |
1154 | if (dir) | |
1155 | closedir(dir); | |
1156 | if (err == 0) { | |
1157 | int i; | |
1158 | ||
1159 | for (i = 0; i < port_count; i++) | |
1160 | if (port_mask & (1 << i)) | |
1161 | printf(" Port%d : - no device attached -\n", i); | |
1162 | } | |
1163 | ||
1164 | return err; | |
1165 | } | |
1166 | ||
5615172f | 1167 | static int detail_platform_imsm(int verbose, int enumerate_only) |
d665cc31 DW |
1168 | { |
1169 | /* There are two components to imsm platform support, the ahci SATA | |
1170 | * controller and the option-rom. To find the SATA controller we | |
1171 | * simply look in /sys/bus/pci/drivers/ahci to see if an ahci | |
1172 | * controller with the Intel vendor id is present. This approach | |
1173 | * allows mdadm to leverage the kernel's ahci detection logic, with the | |
1174 | * caveat that if ahci.ko is not loaded mdadm will not be able to | |
1175 | * detect platform raid capabilities. The option-rom resides in a | |
1176 | * platform "Adapter ROM". We scan for its signature to retrieve the | |
1177 | * platform capabilities. If raid support is disabled in the BIOS the | |
1178 | * option-rom capability structure will not be available. | |
1179 | */ | |
1180 | const struct imsm_orom *orom; | |
1181 | struct sys_dev *list, *hba; | |
1182 | DIR *dir; | |
1183 | struct dirent *ent; | |
1184 | const char *hba_path; | |
1185 | int host_base = 0; | |
1186 | int port_count = 0; | |
1187 | ||
5615172f DW |
1188 | if (enumerate_only) { |
1189 | if (check_env("IMSM_NO_PLATFORM") || find_imsm_orom()) | |
1190 | return 0; | |
1191 | return 2; | |
1192 | } | |
1193 | ||
d665cc31 DW |
1194 | list = find_driver_devices("pci", "ahci"); |
1195 | for (hba = list; hba; hba = hba->next) | |
1196 | if (devpath_to_vendor(hba->path) == 0x8086) | |
1197 | break; | |
1198 | ||
1199 | if (!hba) { | |
1200 | if (verbose) | |
1201 | fprintf(stderr, Name ": unable to find active ahci controller\n"); | |
1202 | free_sys_dev(&list); | |
1203 | return 2; | |
1204 | } else if (verbose) | |
1205 | fprintf(stderr, Name ": found Intel SATA AHCI Controller\n"); | |
1206 | hba_path = hba->path; | |
1207 | hba->path = NULL; | |
1208 | free_sys_dev(&list); | |
1209 | ||
1210 | orom = find_imsm_orom(); | |
1211 | if (!orom) { | |
1212 | if (verbose) | |
1213 | fprintf(stderr, Name ": imsm option-rom not found\n"); | |
1214 | return 2; | |
1215 | } | |
1216 | ||
1217 | printf(" Platform : Intel(R) Matrix Storage Manager\n"); | |
1218 | printf(" Version : %d.%d.%d.%d\n", orom->major_ver, orom->minor_ver, | |
1219 | orom->hotfix_ver, orom->build); | |
1220 | printf(" RAID Levels :%s%s%s%s%s\n", | |
1221 | imsm_orom_has_raid0(orom) ? " raid0" : "", | |
1222 | imsm_orom_has_raid1(orom) ? " raid1" : "", | |
1223 | imsm_orom_has_raid1e(orom) ? " raid1e" : "", | |
1224 | imsm_orom_has_raid10(orom) ? " raid10" : "", | |
1225 | imsm_orom_has_raid5(orom) ? " raid5" : ""); | |
8be094f0 DW |
1226 | printf(" Chunk Sizes :%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n", |
1227 | imsm_orom_has_chunk(orom, 2) ? " 2k" : "", | |
1228 | imsm_orom_has_chunk(orom, 4) ? " 4k" : "", | |
1229 | imsm_orom_has_chunk(orom, 8) ? " 8k" : "", | |
1230 | imsm_orom_has_chunk(orom, 16) ? " 16k" : "", | |
1231 | imsm_orom_has_chunk(orom, 32) ? " 32k" : "", | |
1232 | imsm_orom_has_chunk(orom, 64) ? " 64k" : "", | |
1233 | imsm_orom_has_chunk(orom, 128) ? " 128k" : "", | |
1234 | imsm_orom_has_chunk(orom, 256) ? " 256k" : "", | |
1235 | imsm_orom_has_chunk(orom, 512) ? " 512k" : "", | |
1236 | imsm_orom_has_chunk(orom, 1024*1) ? " 1M" : "", | |
1237 | imsm_orom_has_chunk(orom, 1024*2) ? " 2M" : "", | |
1238 | imsm_orom_has_chunk(orom, 1024*4) ? " 4M" : "", | |
1239 | imsm_orom_has_chunk(orom, 1024*8) ? " 8M" : "", | |
1240 | imsm_orom_has_chunk(orom, 1024*16) ? " 16M" : "", | |
1241 | imsm_orom_has_chunk(orom, 1024*32) ? " 32M" : "", | |
1242 | imsm_orom_has_chunk(orom, 1024*64) ? " 64M" : ""); | |
d665cc31 DW |
1243 | printf(" Max Disks : %d\n", orom->tds); |
1244 | printf(" Max Volumes : %d\n", orom->vpa); | |
1245 | printf(" I/O Controller : %s\n", hba_path); | |
1246 | ||
1247 | /* find the smallest scsi host number to determine a port number base */ | |
1248 | dir = opendir(hba_path); | |
1249 | for (ent = dir ? readdir(dir) : NULL; ent; ent = readdir(dir)) { | |
1250 | int host; | |
1251 | ||
1252 | if (sscanf(ent->d_name, "host%d", &host) != 1) | |
1253 | continue; | |
1254 | if (port_count == 0) | |
1255 | host_base = host; | |
1256 | else if (host < host_base) | |
1257 | host_base = host; | |
1258 | ||
1259 | if (host + 1 > port_count + host_base) | |
1260 | port_count = host + 1 - host_base; | |
1261 | ||
1262 | } | |
1263 | if (dir) | |
1264 | closedir(dir); | |
1265 | ||
1266 | if (!port_count || imsm_enumerate_ports(hba_path, port_count, | |
1267 | host_base, verbose) != 0) { | |
1268 | if (verbose) | |
1269 | fprintf(stderr, Name ": failed to enumerate ports\n"); | |
1270 | return 2; | |
1271 | } | |
1272 | ||
1273 | return 0; | |
1274 | } | |
cdddbdbc DW |
1275 | #endif |
1276 | ||
1277 | static int match_home_imsm(struct supertype *st, char *homehost) | |
1278 | { | |
5115ca67 DW |
1279 | /* the imsm metadata format does not specify any host |
1280 | * identification information. We return -1 since we can never | |
1281 | * confirm nor deny whether a given array is "meant" for this | |
148acb7b | 1282 | * host. We rely on compare_super and the 'family_num' fields to |
5115ca67 DW |
1283 | * exclude member disks that do not belong, and we rely on |
1284 | * mdadm.conf to specify the arrays that should be assembled. | |
1285 | * Auto-assembly may still pick up "foreign" arrays. | |
1286 | */ | |
cdddbdbc | 1287 | |
9362c1c8 | 1288 | return -1; |
cdddbdbc DW |
1289 | } |
1290 | ||
1291 | static void uuid_from_super_imsm(struct supertype *st, int uuid[4]) | |
1292 | { | |
51006d85 N |
1293 | /* The uuid returned here is used for: |
1294 | * uuid to put into bitmap file (Create, Grow) | |
1295 | * uuid for backup header when saving critical section (Grow) | |
1296 | * comparing uuids when re-adding a device into an array | |
1297 | * In these cases the uuid required is that of the data-array, | |
1298 | * not the device-set. | |
1299 | * uuid to recognise same set when adding a missing device back | |
1300 | * to an array. This is a uuid for the device-set. | |
1301 | * | |
1302 | * For each of these we can make do with a truncated | |
1303 | * or hashed uuid rather than the original, as long as | |
1304 | * everyone agrees. | |
1305 | * In each case the uuid required is that of the data-array, | |
1306 | * not the device-set. | |
43dad3d6 | 1307 | */ |
51006d85 N |
1308 | /* imsm does not track uuid's so we synthesis one using sha1 on |
1309 | * - The signature (Which is constant for all imsm array, but no matter) | |
148acb7b | 1310 | * - the orig_family_num of the container |
51006d85 N |
1311 | * - the index number of the volume |
1312 | * - the 'serial' number of the volume. | |
1313 | * Hopefully these are all constant. | |
1314 | */ | |
1315 | struct intel_super *super = st->sb; | |
43dad3d6 | 1316 | |
51006d85 N |
1317 | char buf[20]; |
1318 | struct sha1_ctx ctx; | |
1319 | struct imsm_dev *dev = NULL; | |
148acb7b | 1320 | __u32 family_num; |
51006d85 | 1321 | |
148acb7b DW |
1322 | /* some mdadm versions failed to set ->orig_family_num, in which |
1323 | * case fall back to ->family_num. orig_family_num will be | |
1324 | * fixed up with the first metadata update. | |
1325 | */ | |
1326 | family_num = super->anchor->orig_family_num; | |
1327 | if (family_num == 0) | |
1328 | family_num = super->anchor->family_num; | |
51006d85 | 1329 | sha1_init_ctx(&ctx); |
92bd8f8d | 1330 | sha1_process_bytes(super->anchor->sig, MPB_SIG_LEN, &ctx); |
148acb7b | 1331 | sha1_process_bytes(&family_num, sizeof(__u32), &ctx); |
51006d85 N |
1332 | if (super->current_vol >= 0) |
1333 | dev = get_imsm_dev(super, super->current_vol); | |
1334 | if (dev) { | |
1335 | __u32 vol = super->current_vol; | |
1336 | sha1_process_bytes(&vol, sizeof(vol), &ctx); | |
1337 | sha1_process_bytes(dev->volume, MAX_RAID_SERIAL_LEN, &ctx); | |
1338 | } | |
1339 | sha1_finish_ctx(&ctx, buf); | |
1340 | memcpy(uuid, buf, 4*4); | |
cdddbdbc DW |
1341 | } |
1342 | ||
0d481d37 | 1343 | #if 0 |
4f5bc454 DW |
1344 | static void |
1345 | get_imsm_numerical_version(struct imsm_super *mpb, int *m, int *p) | |
cdddbdbc | 1346 | { |
cdddbdbc DW |
1347 | __u8 *v = get_imsm_version(mpb); |
1348 | __u8 *end = mpb->sig + MAX_SIGNATURE_LENGTH; | |
1349 | char major[] = { 0, 0, 0 }; | |
1350 | char minor[] = { 0 ,0, 0 }; | |
1351 | char patch[] = { 0, 0, 0 }; | |
1352 | char *ver_parse[] = { major, minor, patch }; | |
1353 | int i, j; | |
1354 | ||
1355 | i = j = 0; | |
1356 | while (*v != '\0' && v < end) { | |
1357 | if (*v != '.' && j < 2) | |
1358 | ver_parse[i][j++] = *v; | |
1359 | else { | |
1360 | i++; | |
1361 | j = 0; | |
1362 | } | |
1363 | v++; | |
1364 | } | |
1365 | ||
4f5bc454 DW |
1366 | *m = strtol(minor, NULL, 0); |
1367 | *p = strtol(patch, NULL, 0); | |
1368 | } | |
0d481d37 | 1369 | #endif |
4f5bc454 | 1370 | |
1e5c6983 DW |
1371 | static __u32 migr_strip_blocks_resync(struct imsm_dev *dev) |
1372 | { | |
1373 | /* migr_strip_size when repairing or initializing parity */ | |
1374 | struct imsm_map *map = get_imsm_map(dev, 0); | |
1375 | __u32 chunk = __le32_to_cpu(map->blocks_per_strip); | |
1376 | ||
1377 | switch (get_imsm_raid_level(map)) { | |
1378 | case 5: | |
1379 | case 10: | |
1380 | return chunk; | |
1381 | default: | |
1382 | return 128*1024 >> 9; | |
1383 | } | |
1384 | } | |
1385 | ||
1386 | static __u32 migr_strip_blocks_rebuild(struct imsm_dev *dev) | |
1387 | { | |
1388 | /* migr_strip_size when rebuilding a degraded disk, no idea why | |
1389 | * this is different than migr_strip_size_resync(), but it's good | |
1390 | * to be compatible | |
1391 | */ | |
1392 | struct imsm_map *map = get_imsm_map(dev, 1); | |
1393 | __u32 chunk = __le32_to_cpu(map->blocks_per_strip); | |
1394 | ||
1395 | switch (get_imsm_raid_level(map)) { | |
1396 | case 1: | |
1397 | case 10: | |
1398 | if (map->num_members % map->num_domains == 0) | |
1399 | return 128*1024 >> 9; | |
1400 | else | |
1401 | return chunk; | |
1402 | case 5: | |
1403 | return max((__u32) 64*1024 >> 9, chunk); | |
1404 | default: | |
1405 | return 128*1024 >> 9; | |
1406 | } | |
1407 | } | |
1408 | ||
1409 | static __u32 num_stripes_per_unit_resync(struct imsm_dev *dev) | |
1410 | { | |
1411 | struct imsm_map *lo = get_imsm_map(dev, 0); | |
1412 | struct imsm_map *hi = get_imsm_map(dev, 1); | |
1413 | __u32 lo_chunk = __le32_to_cpu(lo->blocks_per_strip); | |
1414 | __u32 hi_chunk = __le32_to_cpu(hi->blocks_per_strip); | |
1415 | ||
1416 | return max((__u32) 1, hi_chunk / lo_chunk); | |
1417 | } | |
1418 | ||
1419 | static __u32 num_stripes_per_unit_rebuild(struct imsm_dev *dev) | |
1420 | { | |
1421 | struct imsm_map *lo = get_imsm_map(dev, 0); | |
1422 | int level = get_imsm_raid_level(lo); | |
1423 | ||
1424 | if (level == 1 || level == 10) { | |
1425 | struct imsm_map *hi = get_imsm_map(dev, 1); | |
1426 | ||
1427 | return hi->num_domains; | |
1428 | } else | |
1429 | return num_stripes_per_unit_resync(dev); | |
1430 | } | |
1431 | ||
98130f40 | 1432 | static __u8 imsm_num_data_members(struct imsm_dev *dev, int second_map) |
1e5c6983 DW |
1433 | { |
1434 | /* named 'imsm_' because raid0, raid1 and raid10 | |
1435 | * counter-intuitively have the same number of data disks | |
1436 | */ | |
98130f40 | 1437 | struct imsm_map *map = get_imsm_map(dev, second_map); |
1e5c6983 DW |
1438 | |
1439 | switch (get_imsm_raid_level(map)) { | |
1440 | case 0: | |
1441 | case 1: | |
1442 | case 10: | |
1443 | return map->num_members; | |
1444 | case 5: | |
1445 | return map->num_members - 1; | |
1446 | default: | |
1447 | dprintf("%s: unsupported raid level\n", __func__); | |
1448 | return 0; | |
1449 | } | |
1450 | } | |
1451 | ||
1452 | static __u32 parity_segment_depth(struct imsm_dev *dev) | |
1453 | { | |
1454 | struct imsm_map *map = get_imsm_map(dev, 0); | |
1455 | __u32 chunk = __le32_to_cpu(map->blocks_per_strip); | |
1456 | ||
1457 | switch(get_imsm_raid_level(map)) { | |
1458 | case 1: | |
1459 | case 10: | |
1460 | return chunk * map->num_domains; | |
1461 | case 5: | |
1462 | return chunk * map->num_members; | |
1463 | default: | |
1464 | return chunk; | |
1465 | } | |
1466 | } | |
1467 | ||
1468 | static __u32 map_migr_block(struct imsm_dev *dev, __u32 block) | |
1469 | { | |
1470 | struct imsm_map *map = get_imsm_map(dev, 1); | |
1471 | __u32 chunk = __le32_to_cpu(map->blocks_per_strip); | |
1472 | __u32 strip = block / chunk; | |
1473 | ||
1474 | switch (get_imsm_raid_level(map)) { | |
1475 | case 1: | |
1476 | case 10: { | |
1477 | __u32 vol_strip = (strip * map->num_domains) + 1; | |
1478 | __u32 vol_stripe = vol_strip / map->num_members; | |
1479 | ||
1480 | return vol_stripe * chunk + block % chunk; | |
1481 | } case 5: { | |
1482 | __u32 stripe = strip / (map->num_members - 1); | |
1483 | ||
1484 | return stripe * chunk + block % chunk; | |
1485 | } | |
1486 | default: | |
1487 | return 0; | |
1488 | } | |
1489 | } | |
1490 | ||
1491 | static __u64 blocks_per_migr_unit(struct imsm_dev *dev) | |
1492 | { | |
1493 | /* calculate the conversion factor between per member 'blocks' | |
1494 | * (md/{resync,rebuild}_start) and imsm migration units, return | |
1495 | * 0 for the 'not migrating' and 'unsupported migration' cases | |
1496 | */ | |
1497 | if (!dev->vol.migr_state) | |
1498 | return 0; | |
1499 | ||
1500 | switch (migr_type(dev)) { | |
1501 | case MIGR_VERIFY: | |
1502 | case MIGR_REPAIR: | |
1503 | case MIGR_INIT: { | |
1504 | struct imsm_map *map = get_imsm_map(dev, 0); | |
1505 | __u32 stripes_per_unit; | |
1506 | __u32 blocks_per_unit; | |
1507 | __u32 parity_depth; | |
1508 | __u32 migr_chunk; | |
1509 | __u32 block_map; | |
1510 | __u32 block_rel; | |
1511 | __u32 segment; | |
1512 | __u32 stripe; | |
1513 | __u8 disks; | |
1514 | ||
1515 | /* yes, this is really the translation of migr_units to | |
1516 | * per-member blocks in the 'resync' case | |
1517 | */ | |
1518 | stripes_per_unit = num_stripes_per_unit_resync(dev); | |
1519 | migr_chunk = migr_strip_blocks_resync(dev); | |
98130f40 | 1520 | disks = imsm_num_data_members(dev, 0); |
1e5c6983 DW |
1521 | blocks_per_unit = stripes_per_unit * migr_chunk * disks; |
1522 | stripe = __le32_to_cpu(map->blocks_per_strip) * disks; | |
1523 | segment = blocks_per_unit / stripe; | |
1524 | block_rel = blocks_per_unit - segment * stripe; | |
1525 | parity_depth = parity_segment_depth(dev); | |
1526 | block_map = map_migr_block(dev, block_rel); | |
1527 | return block_map + parity_depth * segment; | |
1528 | } | |
1529 | case MIGR_REBUILD: { | |
1530 | __u32 stripes_per_unit; | |
1531 | __u32 migr_chunk; | |
1532 | ||
1533 | stripes_per_unit = num_stripes_per_unit_rebuild(dev); | |
1534 | migr_chunk = migr_strip_blocks_rebuild(dev); | |
1535 | return migr_chunk * stripes_per_unit; | |
1536 | } | |
1537 | case MIGR_GEN_MIGR: | |
aad6f216 | 1538 | /* FIXME I need a number here */ |
1e5c6983 DW |
1539 | case MIGR_STATE_CHANGE: |
1540 | default: | |
1541 | return 0; | |
1542 | } | |
1543 | } | |
1544 | ||
c2c087e6 DW |
1545 | static int imsm_level_to_layout(int level) |
1546 | { | |
1547 | switch (level) { | |
1548 | case 0: | |
1549 | case 1: | |
1550 | return 0; | |
1551 | case 5: | |
1552 | case 6: | |
a380c027 | 1553 | return ALGORITHM_LEFT_ASYMMETRIC; |
c2c087e6 | 1554 | case 10: |
c92a2527 | 1555 | return 0x102; |
c2c087e6 | 1556 | } |
a18a888e | 1557 | return UnSet; |
c2c087e6 DW |
1558 | } |
1559 | ||
a5d85af7 | 1560 | static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info, char *dmap) |
bf5a934a DW |
1561 | { |
1562 | struct intel_super *super = st->sb; | |
949c47a0 | 1563 | struct imsm_dev *dev = get_imsm_dev(super, super->current_vol); |
a965f303 | 1564 | struct imsm_map *map = get_imsm_map(dev, 0); |
81ac8b4d | 1565 | struct imsm_map *prev_map = get_imsm_map(dev, 1); |
efb30e7f | 1566 | struct dl *dl; |
e207da2f | 1567 | char *devname; |
a5d85af7 | 1568 | int map_disks = info->array.raid_disks; |
bf5a934a | 1569 | |
efb30e7f DW |
1570 | for (dl = super->disks; dl; dl = dl->next) |
1571 | if (dl->raiddisk == info->disk.raid_disk) | |
1572 | break; | |
bf5a934a DW |
1573 | info->container_member = super->current_vol; |
1574 | info->array.raid_disks = map->num_members; | |
1575 | info->array.level = get_imsm_raid_level(map); | |
1576 | info->array.layout = imsm_level_to_layout(info->array.level); | |
1577 | info->array.md_minor = -1; | |
1578 | info->array.ctime = 0; | |
1579 | info->array.utime = 0; | |
301406c9 DW |
1580 | info->array.chunk_size = __le16_to_cpu(map->blocks_per_strip) << 9; |
1581 | info->array.state = !dev->vol.dirty; | |
da9b4a62 DW |
1582 | info->custom_array_size = __le32_to_cpu(dev->size_high); |
1583 | info->custom_array_size <<= 32; | |
1584 | info->custom_array_size |= __le32_to_cpu(dev->size_low); | |
301406c9 DW |
1585 | |
1586 | info->disk.major = 0; | |
1587 | info->disk.minor = 0; | |
efb30e7f DW |
1588 | if (dl) { |
1589 | info->disk.major = dl->major; | |
1590 | info->disk.minor = dl->minor; | |
1591 | } | |
bf5a934a DW |
1592 | |
1593 | info->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
1594 | info->component_size = __le32_to_cpu(map->blocks_per_member); | |
301406c9 | 1595 | memset(info->uuid, 0, sizeof(info->uuid)); |
921d9e16 | 1596 | info->recovery_start = MaxSector; |
81ac8b4d AK |
1597 | info->reshape_active = (prev_map != NULL); |
1598 | if (info->reshape_active) | |
1599 | info->delta_disks = map->num_members - prev_map->num_members; | |
1600 | else | |
1601 | info->delta_disks = 0; | |
bf5a934a | 1602 | |
1e5c6983 | 1603 | if (map->map_state == IMSM_T_STATE_UNINITIALIZED || dev->vol.dirty) { |
301406c9 | 1604 | info->resync_start = 0; |
1e5c6983 DW |
1605 | } else if (dev->vol.migr_state) { |
1606 | switch (migr_type(dev)) { | |
1607 | case MIGR_REPAIR: | |
1608 | case MIGR_INIT: { | |
1609 | __u64 blocks_per_unit = blocks_per_migr_unit(dev); | |
1610 | __u64 units = __le32_to_cpu(dev->vol.curr_migr_unit); | |
1611 | ||
1612 | info->resync_start = blocks_per_unit * units; | |
1613 | break; | |
1614 | } | |
1615 | case MIGR_VERIFY: | |
1616 | /* we could emulate the checkpointing of | |
1617 | * 'sync_action=check' migrations, but for now | |
1618 | * we just immediately complete them | |
1619 | */ | |
1620 | case MIGR_REBUILD: | |
1621 | /* this is handled by container_content_imsm() */ | |
1622 | case MIGR_GEN_MIGR: | |
1623 | case MIGR_STATE_CHANGE: | |
1624 | /* FIXME handle other migrations */ | |
1625 | default: | |
1626 | /* we are not dirty, so... */ | |
1627 | info->resync_start = MaxSector; | |
1628 | } | |
1629 | } else | |
b7528a20 | 1630 | info->resync_start = MaxSector; |
301406c9 DW |
1631 | |
1632 | strncpy(info->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN); | |
1633 | info->name[MAX_RAID_SERIAL_LEN] = 0; | |
bf5a934a | 1634 | |
f35f2525 N |
1635 | info->array.major_version = -1; |
1636 | info->array.minor_version = -2; | |
e207da2f AW |
1637 | devname = devnum2devname(st->container_dev); |
1638 | *info->text_version = '\0'; | |
1639 | if (devname) | |
1640 | sprintf(info->text_version, "/%s/%d", devname, info->container_member); | |
1641 | free(devname); | |
a67dd8cc | 1642 | info->safe_mode_delay = 4000; /* 4 secs like the Matrix driver */ |
51006d85 | 1643 | uuid_from_super_imsm(st, info->uuid); |
a5d85af7 N |
1644 | |
1645 | if (dmap) { | |
1646 | int i, j; | |
1647 | for (i=0; i<map_disks; i++) { | |
1648 | dmap[i] = 0; | |
1649 | if (i < info->array.raid_disks) { | |
1650 | struct imsm_disk *dsk; | |
98130f40 | 1651 | j = get_imsm_disk_idx(dev, i, -1); |
a5d85af7 N |
1652 | dsk = get_imsm_disk(super, j); |
1653 | if (dsk && (dsk->status & CONFIGURED_DISK)) | |
1654 | dmap[i] = 1; | |
1655 | } | |
1656 | } | |
1657 | } | |
81ac8b4d | 1658 | } |
bf5a934a | 1659 | |
97b4d0e9 DW |
1660 | static __u8 imsm_check_degraded(struct intel_super *super, struct imsm_dev *dev, int failed); |
1661 | static int imsm_count_failed(struct intel_super *super, struct imsm_dev *dev); | |
1662 | ||
1663 | static struct imsm_disk *get_imsm_missing(struct intel_super *super, __u8 index) | |
1664 | { | |
1665 | struct dl *d; | |
1666 | ||
1667 | for (d = super->missing; d; d = d->next) | |
1668 | if (d->index == index) | |
1669 | return &d->disk; | |
1670 | return NULL; | |
1671 | } | |
1672 | ||
a5d85af7 | 1673 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info, char *map) |
4f5bc454 DW |
1674 | { |
1675 | struct intel_super *super = st->sb; | |
4f5bc454 | 1676 | struct imsm_disk *disk; |
a5d85af7 | 1677 | int map_disks = info->array.raid_disks; |
ab3cb6b3 N |
1678 | int max_enough = -1; |
1679 | int i; | |
1680 | struct imsm_super *mpb; | |
4f5bc454 | 1681 | |
bf5a934a | 1682 | if (super->current_vol >= 0) { |
a5d85af7 | 1683 | getinfo_super_imsm_volume(st, info, map); |
bf5a934a DW |
1684 | return; |
1685 | } | |
d23fe947 DW |
1686 | |
1687 | /* Set raid_disks to zero so that Assemble will always pull in valid | |
1688 | * spares | |
1689 | */ | |
1690 | info->array.raid_disks = 0; | |
cdddbdbc DW |
1691 | info->array.level = LEVEL_CONTAINER; |
1692 | info->array.layout = 0; | |
1693 | info->array.md_minor = -1; | |
c2c087e6 | 1694 | info->array.ctime = 0; /* N/A for imsm */ |
cdddbdbc DW |
1695 | info->array.utime = 0; |
1696 | info->array.chunk_size = 0; | |
1697 | ||
1698 | info->disk.major = 0; | |
1699 | info->disk.minor = 0; | |
cdddbdbc | 1700 | info->disk.raid_disk = -1; |
c2c087e6 | 1701 | info->reshape_active = 0; |
f35f2525 N |
1702 | info->array.major_version = -1; |
1703 | info->array.minor_version = -2; | |
c2c087e6 | 1704 | strcpy(info->text_version, "imsm"); |
a67dd8cc | 1705 | info->safe_mode_delay = 0; |
c2c087e6 DW |
1706 | info->disk.number = -1; |
1707 | info->disk.state = 0; | |
c5afc314 | 1708 | info->name[0] = 0; |
921d9e16 | 1709 | info->recovery_start = MaxSector; |
c2c087e6 | 1710 | |
97b4d0e9 | 1711 | /* do we have the all the insync disks that we expect? */ |
ab3cb6b3 | 1712 | mpb = super->anchor; |
97b4d0e9 | 1713 | |
ab3cb6b3 N |
1714 | for (i = 0; i < mpb->num_raid_devs; i++) { |
1715 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
1716 | int failed, enough, j, missing = 0; | |
1717 | struct imsm_map *map; | |
1718 | __u8 state; | |
97b4d0e9 | 1719 | |
ab3cb6b3 N |
1720 | failed = imsm_count_failed(super, dev); |
1721 | state = imsm_check_degraded(super, dev, failed); | |
1722 | map = get_imsm_map(dev, dev->vol.migr_state); | |
1723 | ||
1724 | /* any newly missing disks? | |
1725 | * (catches single-degraded vs double-degraded) | |
1726 | */ | |
1727 | for (j = 0; j < map->num_members; j++) { | |
98130f40 | 1728 | __u32 ord = get_imsm_ord_tbl_ent(dev, i, -1); |
ab3cb6b3 N |
1729 | __u32 idx = ord_to_idx(ord); |
1730 | ||
1731 | if (!(ord & IMSM_ORD_REBUILD) && | |
1732 | get_imsm_missing(super, idx)) { | |
1733 | missing = 1; | |
1734 | break; | |
1735 | } | |
97b4d0e9 | 1736 | } |
ab3cb6b3 N |
1737 | |
1738 | if (state == IMSM_T_STATE_FAILED) | |
1739 | enough = -1; | |
1740 | else if (state == IMSM_T_STATE_DEGRADED && | |
1741 | (state != map->map_state || missing)) | |
1742 | enough = 0; | |
1743 | else /* we're normal, or already degraded */ | |
1744 | enough = 1; | |
1745 | ||
1746 | /* in the missing/failed disk case check to see | |
1747 | * if at least one array is runnable | |
1748 | */ | |
1749 | max_enough = max(max_enough, enough); | |
1750 | } | |
1751 | dprintf("%s: enough: %d\n", __func__, max_enough); | |
1752 | info->container_enough = max_enough; | |
97b4d0e9 | 1753 | |
4a04ec6c | 1754 | if (super->disks) { |
14e8215b DW |
1755 | __u32 reserved = imsm_reserved_sectors(super, super->disks); |
1756 | ||
b9f594fe | 1757 | disk = &super->disks->disk; |
14e8215b DW |
1758 | info->data_offset = __le32_to_cpu(disk->total_blocks) - reserved; |
1759 | info->component_size = reserved; | |
25ed7e59 | 1760 | info->disk.state = is_configured(disk) ? (1 << MD_DISK_ACTIVE) : 0; |
df474657 DW |
1761 | /* we don't change info->disk.raid_disk here because |
1762 | * this state will be finalized in mdmon after we have | |
1763 | * found the 'most fresh' version of the metadata | |
1764 | */ | |
25ed7e59 DW |
1765 | info->disk.state |= is_failed(disk) ? (1 << MD_DISK_FAULTY) : 0; |
1766 | info->disk.state |= is_spare(disk) ? 0 : (1 << MD_DISK_SYNC); | |
cdddbdbc | 1767 | } |
a575e2a7 DW |
1768 | |
1769 | /* only call uuid_from_super_imsm when this disk is part of a populated container, | |
1770 | * ->compare_super may have updated the 'num_raid_devs' field for spares | |
1771 | */ | |
1772 | if (info->disk.state & (1 << MD_DISK_SYNC) || super->anchor->num_raid_devs) | |
36ba7d48 | 1773 | uuid_from_super_imsm(st, info->uuid); |
22e263f6 AC |
1774 | else |
1775 | memcpy(info->uuid, uuid_zero, sizeof(uuid_zero)); | |
a5d85af7 N |
1776 | |
1777 | /* I don't know how to compute 'map' on imsm, so use safe default */ | |
1778 | if (map) { | |
1779 | int i; | |
1780 | for (i = 0; i < map_disks; i++) | |
1781 | map[i] = 1; | |
1782 | } | |
1783 | ||
cdddbdbc DW |
1784 | } |
1785 | ||
5c4cd5da AC |
1786 | /* allocates memory and fills disk in mdinfo structure |
1787 | * for each disk in array */ | |
1788 | struct mdinfo *getinfo_super_disks_imsm(struct supertype *st) | |
1789 | { | |
1790 | struct mdinfo *mddev = NULL; | |
1791 | struct intel_super *super = st->sb; | |
1792 | struct imsm_disk *disk; | |
1793 | int count = 0; | |
1794 | struct dl *dl; | |
1795 | if (!super || !super->disks) | |
1796 | return NULL; | |
1797 | dl = super->disks; | |
1798 | mddev = malloc(sizeof(*mddev)); | |
1799 | if (!mddev) { | |
1800 | fprintf(stderr, Name ": Failed to allocate memory.\n"); | |
1801 | return NULL; | |
1802 | } | |
1803 | memset(mddev, 0, sizeof(*mddev)); | |
1804 | while (dl) { | |
1805 | struct mdinfo *tmp; | |
1806 | disk = &dl->disk; | |
1807 | tmp = malloc(sizeof(*tmp)); | |
1808 | if (!tmp) { | |
1809 | fprintf(stderr, Name ": Failed to allocate memory.\n"); | |
1810 | if (mddev) | |
1811 | sysfs_free(mddev); | |
1812 | return NULL; | |
1813 | } | |
1814 | memset(tmp, 0, sizeof(*tmp)); | |
1815 | if (mddev->devs) | |
1816 | tmp->next = mddev->devs; | |
1817 | mddev->devs = tmp; | |
1818 | tmp->disk.number = count++; | |
1819 | tmp->disk.major = dl->major; | |
1820 | tmp->disk.minor = dl->minor; | |
1821 | tmp->disk.state = is_configured(disk) ? | |
1822 | (1 << MD_DISK_ACTIVE) : 0; | |
1823 | tmp->disk.state |= is_failed(disk) ? (1 << MD_DISK_FAULTY) : 0; | |
1824 | tmp->disk.state |= is_spare(disk) ? 0 : (1 << MD_DISK_SYNC); | |
1825 | tmp->disk.raid_disk = -1; | |
1826 | dl = dl->next; | |
1827 | } | |
1828 | return mddev; | |
1829 | } | |
1830 | ||
cdddbdbc DW |
1831 | static int update_super_imsm(struct supertype *st, struct mdinfo *info, |
1832 | char *update, char *devname, int verbose, | |
1833 | int uuid_set, char *homehost) | |
1834 | { | |
f352c545 DW |
1835 | /* For 'assemble' and 'force' we need to return non-zero if any |
1836 | * change was made. For others, the return value is ignored. | |
1837 | * Update options are: | |
1838 | * force-one : This device looks a bit old but needs to be included, | |
1839 | * update age info appropriately. | |
1840 | * assemble: clear any 'faulty' flag to allow this device to | |
1841 | * be assembled. | |
1842 | * force-array: Array is degraded but being forced, mark it clean | |
1843 | * if that will be needed to assemble it. | |
1844 | * | |
1845 | * newdev: not used ???? | |
1846 | * grow: Array has gained a new device - this is currently for | |
1847 | * linear only | |
1848 | * resync: mark as dirty so a resync will happen. | |
1849 | * name: update the name - preserving the homehost | |
6e46bf34 | 1850 | * uuid: Change the uuid of the array to match watch is given |
f352c545 DW |
1851 | * |
1852 | * Following are not relevant for this imsm: | |
1853 | * sparc2.2 : update from old dodgey metadata | |
1854 | * super-minor: change the preferred_minor number | |
1855 | * summaries: update redundant counters. | |
f352c545 DW |
1856 | * homehost: update the recorded homehost |
1857 | * _reshape_progress: record new reshape_progress position. | |
1858 | */ | |
6e46bf34 DW |
1859 | int rv = 1; |
1860 | struct intel_super *super = st->sb; | |
1861 | struct imsm_super *mpb; | |
f352c545 | 1862 | |
6e46bf34 DW |
1863 | /* we can only update container info */ |
1864 | if (!super || super->current_vol >= 0 || !super->anchor) | |
1865 | return 1; | |
1866 | ||
1867 | mpb = super->anchor; | |
1868 | ||
1869 | if (strcmp(update, "uuid") == 0 && uuid_set && !info->update_private) | |
1e2b2765 | 1870 | rv = -1; |
6e46bf34 DW |
1871 | else if (strcmp(update, "uuid") == 0 && uuid_set && info->update_private) { |
1872 | mpb->orig_family_num = *((__u32 *) info->update_private); | |
1873 | rv = 0; | |
1874 | } else if (strcmp(update, "uuid") == 0) { | |
1875 | __u32 *new_family = malloc(sizeof(*new_family)); | |
1876 | ||
1877 | /* update orig_family_number with the incoming random | |
1878 | * data, report the new effective uuid, and store the | |
1879 | * new orig_family_num for future updates. | |
1880 | */ | |
1881 | if (new_family) { | |
1882 | memcpy(&mpb->orig_family_num, info->uuid, sizeof(__u32)); | |
1883 | uuid_from_super_imsm(st, info->uuid); | |
1884 | *new_family = mpb->orig_family_num; | |
1885 | info->update_private = new_family; | |
1886 | rv = 0; | |
1887 | } | |
1888 | } else if (strcmp(update, "assemble") == 0) | |
1889 | rv = 0; | |
1890 | else | |
1e2b2765 | 1891 | rv = -1; |
f352c545 | 1892 | |
6e46bf34 DW |
1893 | /* successful update? recompute checksum */ |
1894 | if (rv == 0) | |
1895 | mpb->check_sum = __le32_to_cpu(__gen_imsm_checksum(mpb)); | |
f352c545 DW |
1896 | |
1897 | return rv; | |
cdddbdbc DW |
1898 | } |
1899 | ||
c2c087e6 | 1900 | static size_t disks_to_mpb_size(int disks) |
cdddbdbc | 1901 | { |
c2c087e6 | 1902 | size_t size; |
cdddbdbc | 1903 | |
c2c087e6 DW |
1904 | size = sizeof(struct imsm_super); |
1905 | size += (disks - 1) * sizeof(struct imsm_disk); | |
1906 | size += 2 * sizeof(struct imsm_dev); | |
1907 | /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */ | |
1908 | size += (4 - 2) * sizeof(struct imsm_map); | |
1909 | /* 4 possible disk_ord_tbl's */ | |
1910 | size += 4 * (disks - 1) * sizeof(__u32); | |
1911 | ||
1912 | return size; | |
1913 | } | |
1914 | ||
1915 | static __u64 avail_size_imsm(struct supertype *st, __u64 devsize) | |
1916 | { | |
1917 | if (devsize < (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS)) | |
1918 | return 0; | |
1919 | ||
1920 | return devsize - (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
cdddbdbc DW |
1921 | } |
1922 | ||
ba2de7ba DW |
1923 | static void free_devlist(struct intel_super *super) |
1924 | { | |
1925 | struct intel_dev *dv; | |
1926 | ||
1927 | while (super->devlist) { | |
1928 | dv = super->devlist->next; | |
1929 | free(super->devlist->dev); | |
1930 | free(super->devlist); | |
1931 | super->devlist = dv; | |
1932 | } | |
1933 | } | |
1934 | ||
1935 | static void imsm_copy_dev(struct imsm_dev *dest, struct imsm_dev *src) | |
1936 | { | |
1937 | memcpy(dest, src, sizeof_imsm_dev(src, 0)); | |
1938 | } | |
1939 | ||
cdddbdbc DW |
1940 | static int compare_super_imsm(struct supertype *st, struct supertype *tst) |
1941 | { | |
1942 | /* | |
1943 | * return: | |
1944 | * 0 same, or first was empty, and second was copied | |
1945 | * 1 second had wrong number | |
1946 | * 2 wrong uuid | |
1947 | * 3 wrong other info | |
1948 | */ | |
1949 | struct intel_super *first = st->sb; | |
1950 | struct intel_super *sec = tst->sb; | |
1951 | ||
1952 | if (!first) { | |
1953 | st->sb = tst->sb; | |
1954 | tst->sb = NULL; | |
1955 | return 0; | |
1956 | } | |
1957 | ||
d23fe947 DW |
1958 | /* if an anchor does not have num_raid_devs set then it is a free |
1959 | * floating spare | |
1960 | */ | |
1961 | if (first->anchor->num_raid_devs > 0 && | |
1962 | sec->anchor->num_raid_devs > 0) { | |
a2b97981 DW |
1963 | /* Determine if these disks might ever have been |
1964 | * related. Further disambiguation can only take place | |
1965 | * in load_super_imsm_all | |
1966 | */ | |
1967 | __u32 first_family = first->anchor->orig_family_num; | |
1968 | __u32 sec_family = sec->anchor->orig_family_num; | |
1969 | ||
f796af5d DW |
1970 | if (memcmp(first->anchor->sig, sec->anchor->sig, |
1971 | MAX_SIGNATURE_LENGTH) != 0) | |
1972 | return 3; | |
1973 | ||
a2b97981 DW |
1974 | if (first_family == 0) |
1975 | first_family = first->anchor->family_num; | |
1976 | if (sec_family == 0) | |
1977 | sec_family = sec->anchor->family_num; | |
1978 | ||
1979 | if (first_family != sec_family) | |
d23fe947 | 1980 | return 3; |
f796af5d | 1981 | |
d23fe947 | 1982 | } |
cdddbdbc | 1983 | |
f796af5d | 1984 | |
3e372e5a DW |
1985 | /* if 'first' is a spare promote it to a populated mpb with sec's |
1986 | * family number | |
1987 | */ | |
1988 | if (first->anchor->num_raid_devs == 0 && | |
1989 | sec->anchor->num_raid_devs > 0) { | |
78d30f94 | 1990 | int i; |
ba2de7ba DW |
1991 | struct intel_dev *dv; |
1992 | struct imsm_dev *dev; | |
78d30f94 DW |
1993 | |
1994 | /* we need to copy raid device info from sec if an allocation | |
1995 | * fails here we don't associate the spare | |
1996 | */ | |
1997 | for (i = 0; i < sec->anchor->num_raid_devs; i++) { | |
ba2de7ba DW |
1998 | dv = malloc(sizeof(*dv)); |
1999 | if (!dv) | |
2000 | break; | |
2001 | dev = malloc(sizeof_imsm_dev(get_imsm_dev(sec, i), 1)); | |
2002 | if (!dev) { | |
2003 | free(dv); | |
2004 | break; | |
78d30f94 | 2005 | } |
ba2de7ba DW |
2006 | dv->dev = dev; |
2007 | dv->index = i; | |
2008 | dv->next = first->devlist; | |
2009 | first->devlist = dv; | |
78d30f94 | 2010 | } |
709743c5 | 2011 | if (i < sec->anchor->num_raid_devs) { |
ba2de7ba DW |
2012 | /* allocation failure */ |
2013 | free_devlist(first); | |
2014 | fprintf(stderr, "imsm: failed to associate spare\n"); | |
2015 | return 3; | |
78d30f94 | 2016 | } |
3e372e5a | 2017 | first->anchor->num_raid_devs = sec->anchor->num_raid_devs; |
148acb7b | 2018 | first->anchor->orig_family_num = sec->anchor->orig_family_num; |
3e372e5a | 2019 | first->anchor->family_num = sec->anchor->family_num; |
ac6449be | 2020 | memcpy(first->anchor->sig, sec->anchor->sig, MAX_SIGNATURE_LENGTH); |
709743c5 DW |
2021 | for (i = 0; i < sec->anchor->num_raid_devs; i++) |
2022 | imsm_copy_dev(get_imsm_dev(first, i), get_imsm_dev(sec, i)); | |
3e372e5a DW |
2023 | } |
2024 | ||
cdddbdbc DW |
2025 | return 0; |
2026 | } | |
2027 | ||
0030e8d6 DW |
2028 | static void fd2devname(int fd, char *name) |
2029 | { | |
2030 | struct stat st; | |
2031 | char path[256]; | |
33a6535d | 2032 | char dname[PATH_MAX]; |
0030e8d6 DW |
2033 | char *nm; |
2034 | int rv; | |
2035 | ||
2036 | name[0] = '\0'; | |
2037 | if (fstat(fd, &st) != 0) | |
2038 | return; | |
2039 | sprintf(path, "/sys/dev/block/%d:%d", | |
2040 | major(st.st_rdev), minor(st.st_rdev)); | |
2041 | ||
2042 | rv = readlink(path, dname, sizeof(dname)); | |
2043 | if (rv <= 0) | |
2044 | return; | |
2045 | ||
2046 | dname[rv] = '\0'; | |
2047 | nm = strrchr(dname, '/'); | |
2048 | nm++; | |
2049 | snprintf(name, MAX_RAID_SERIAL_LEN, "/dev/%s", nm); | |
2050 | } | |
2051 | ||
cdddbdbc DW |
2052 | extern int scsi_get_serial(int fd, void *buf, size_t buf_len); |
2053 | ||
2054 | static int imsm_read_serial(int fd, char *devname, | |
2055 | __u8 serial[MAX_RAID_SERIAL_LEN]) | |
2056 | { | |
2057 | unsigned char scsi_serial[255]; | |
cdddbdbc DW |
2058 | int rv; |
2059 | int rsp_len; | |
1f24f035 | 2060 | int len; |
316e2bf4 DW |
2061 | char *dest; |
2062 | char *src; | |
2063 | char *rsp_buf; | |
2064 | int i; | |
cdddbdbc DW |
2065 | |
2066 | memset(scsi_serial, 0, sizeof(scsi_serial)); | |
cdddbdbc | 2067 | |
f9ba0ff1 DW |
2068 | rv = scsi_get_serial(fd, scsi_serial, sizeof(scsi_serial)); |
2069 | ||
40ebbb9c | 2070 | if (rv && check_env("IMSM_DEVNAME_AS_SERIAL")) { |
f9ba0ff1 DW |
2071 | memset(serial, 0, MAX_RAID_SERIAL_LEN); |
2072 | fd2devname(fd, (char *) serial); | |
0030e8d6 DW |
2073 | return 0; |
2074 | } | |
2075 | ||
cdddbdbc DW |
2076 | if (rv != 0) { |
2077 | if (devname) | |
2078 | fprintf(stderr, | |
2079 | Name ": Failed to retrieve serial for %s\n", | |
2080 | devname); | |
2081 | return rv; | |
2082 | } | |
2083 | ||
2084 | rsp_len = scsi_serial[3]; | |
03cd4cc8 DW |
2085 | if (!rsp_len) { |
2086 | if (devname) | |
2087 | fprintf(stderr, | |
2088 | Name ": Failed to retrieve serial for %s\n", | |
2089 | devname); | |
2090 | return 2; | |
2091 | } | |
1f24f035 | 2092 | rsp_buf = (char *) &scsi_serial[4]; |
5c3db629 | 2093 | |
316e2bf4 DW |
2094 | /* trim all whitespace and non-printable characters and convert |
2095 | * ':' to ';' | |
2096 | */ | |
2097 | for (i = 0, dest = rsp_buf; i < rsp_len; i++) { | |
2098 | src = &rsp_buf[i]; | |
2099 | if (*src > 0x20) { | |
2100 | /* ':' is reserved for use in placeholder serial | |
2101 | * numbers for missing disks | |
2102 | */ | |
2103 | if (*src == ':') | |
2104 | *dest++ = ';'; | |
2105 | else | |
2106 | *dest++ = *src; | |
2107 | } | |
2108 | } | |
2109 | len = dest - rsp_buf; | |
2110 | dest = rsp_buf; | |
2111 | ||
2112 | /* truncate leading characters */ | |
2113 | if (len > MAX_RAID_SERIAL_LEN) { | |
2114 | dest += len - MAX_RAID_SERIAL_LEN; | |
1f24f035 | 2115 | len = MAX_RAID_SERIAL_LEN; |
316e2bf4 | 2116 | } |
5c3db629 | 2117 | |
5c3db629 | 2118 | memset(serial, 0, MAX_RAID_SERIAL_LEN); |
316e2bf4 | 2119 | memcpy(serial, dest, len); |
cdddbdbc DW |
2120 | |
2121 | return 0; | |
2122 | } | |
2123 | ||
1f24f035 DW |
2124 | static int serialcmp(__u8 *s1, __u8 *s2) |
2125 | { | |
2126 | return strncmp((char *) s1, (char *) s2, MAX_RAID_SERIAL_LEN); | |
2127 | } | |
2128 | ||
2129 | static void serialcpy(__u8 *dest, __u8 *src) | |
2130 | { | |
2131 | strncpy((char *) dest, (char *) src, MAX_RAID_SERIAL_LEN); | |
2132 | } | |
2133 | ||
1799c9e8 | 2134 | #ifndef MDASSEMBLE |
54c2c1ea DW |
2135 | static struct dl *serial_to_dl(__u8 *serial, struct intel_super *super) |
2136 | { | |
2137 | struct dl *dl; | |
2138 | ||
2139 | for (dl = super->disks; dl; dl = dl->next) | |
2140 | if (serialcmp(dl->serial, serial) == 0) | |
2141 | break; | |
2142 | ||
2143 | return dl; | |
2144 | } | |
1799c9e8 | 2145 | #endif |
54c2c1ea | 2146 | |
a2b97981 DW |
2147 | static struct imsm_disk * |
2148 | __serial_to_disk(__u8 *serial, struct imsm_super *mpb, int *idx) | |
2149 | { | |
2150 | int i; | |
2151 | ||
2152 | for (i = 0; i < mpb->num_disks; i++) { | |
2153 | struct imsm_disk *disk = __get_imsm_disk(mpb, i); | |
2154 | ||
2155 | if (serialcmp(disk->serial, serial) == 0) { | |
2156 | if (idx) | |
2157 | *idx = i; | |
2158 | return disk; | |
2159 | } | |
2160 | } | |
2161 | ||
2162 | return NULL; | |
2163 | } | |
2164 | ||
cdddbdbc DW |
2165 | static int |
2166 | load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd) | |
2167 | { | |
a2b97981 | 2168 | struct imsm_disk *disk; |
cdddbdbc DW |
2169 | struct dl *dl; |
2170 | struct stat stb; | |
cdddbdbc | 2171 | int rv; |
a2b97981 | 2172 | char name[40]; |
d23fe947 DW |
2173 | __u8 serial[MAX_RAID_SERIAL_LEN]; |
2174 | ||
2175 | rv = imsm_read_serial(fd, devname, serial); | |
2176 | ||
2177 | if (rv != 0) | |
2178 | return 2; | |
2179 | ||
a2b97981 | 2180 | dl = calloc(1, sizeof(*dl)); |
b9f594fe | 2181 | if (!dl) { |
cdddbdbc DW |
2182 | if (devname) |
2183 | fprintf(stderr, | |
2184 | Name ": failed to allocate disk buffer for %s\n", | |
2185 | devname); | |
2186 | return 2; | |
2187 | } | |
cdddbdbc | 2188 | |
a2b97981 DW |
2189 | fstat(fd, &stb); |
2190 | dl->major = major(stb.st_rdev); | |
2191 | dl->minor = minor(stb.st_rdev); | |
2192 | dl->next = super->disks; | |
2193 | dl->fd = keep_fd ? fd : -1; | |
2194 | assert(super->disks == NULL); | |
2195 | super->disks = dl; | |
2196 | serialcpy(dl->serial, serial); | |
2197 | dl->index = -2; | |
2198 | dl->e = NULL; | |
2199 | fd2devname(fd, name); | |
2200 | if (devname) | |
2201 | dl->devname = strdup(devname); | |
2202 | else | |
2203 | dl->devname = strdup(name); | |
cdddbdbc | 2204 | |
d23fe947 | 2205 | /* look up this disk's index in the current anchor */ |
a2b97981 DW |
2206 | disk = __serial_to_disk(dl->serial, super->anchor, &dl->index); |
2207 | if (disk) { | |
2208 | dl->disk = *disk; | |
2209 | /* only set index on disks that are a member of a | |
2210 | * populated contianer, i.e. one with raid_devs | |
2211 | */ | |
2212 | if (is_failed(&dl->disk)) | |
3f6efecc | 2213 | dl->index = -2; |
a2b97981 DW |
2214 | else if (is_spare(&dl->disk)) |
2215 | dl->index = -1; | |
3f6efecc DW |
2216 | } |
2217 | ||
949c47a0 DW |
2218 | return 0; |
2219 | } | |
2220 | ||
0e600426 | 2221 | #ifndef MDASSEMBLE |
0c046afd DW |
2222 | /* When migrating map0 contains the 'destination' state while map1 |
2223 | * contains the current state. When not migrating map0 contains the | |
2224 | * current state. This routine assumes that map[0].map_state is set to | |
2225 | * the current array state before being called. | |
2226 | * | |
2227 | * Migration is indicated by one of the following states | |
2228 | * 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed) | |
e3bba0e0 | 2229 | * 2/ Initialize (migr_state=1 migr_type=MIGR_INIT map0state=normal |
0c046afd | 2230 | * map1state=unitialized) |
1484e727 | 2231 | * 3/ Repair (Resync) (migr_state=1 migr_type=MIGR_REPAIR map0state=normal |
0c046afd | 2232 | * map1state=normal) |
e3bba0e0 | 2233 | * 4/ Rebuild (migr_state=1 migr_type=MIGR_REBUILD map0state=normal |
0c046afd DW |
2234 | * map1state=degraded) |
2235 | */ | |
0556e1a2 | 2236 | static void migrate(struct imsm_dev *dev, __u8 to_state, int migr_type) |
3393c6af | 2237 | { |
0c046afd | 2238 | struct imsm_map *dest; |
3393c6af DW |
2239 | struct imsm_map *src = get_imsm_map(dev, 0); |
2240 | ||
0c046afd | 2241 | dev->vol.migr_state = 1; |
1484e727 | 2242 | set_migr_type(dev, migr_type); |
f8f603f1 | 2243 | dev->vol.curr_migr_unit = 0; |
0c046afd DW |
2244 | dest = get_imsm_map(dev, 1); |
2245 | ||
0556e1a2 | 2246 | /* duplicate and then set the target end state in map[0] */ |
3393c6af | 2247 | memcpy(dest, src, sizeof_imsm_map(src)); |
28bce06f AK |
2248 | if ((migr_type == MIGR_REBUILD) || |
2249 | (migr_type == MIGR_GEN_MIGR)) { | |
0556e1a2 DW |
2250 | __u32 ord; |
2251 | int i; | |
2252 | ||
2253 | for (i = 0; i < src->num_members; i++) { | |
2254 | ord = __le32_to_cpu(src->disk_ord_tbl[i]); | |
2255 | set_imsm_ord_tbl_ent(src, i, ord_to_idx(ord)); | |
2256 | } | |
2257 | } | |
2258 | ||
0c046afd | 2259 | src->map_state = to_state; |
949c47a0 | 2260 | } |
f8f603f1 DW |
2261 | |
2262 | static void end_migration(struct imsm_dev *dev, __u8 map_state) | |
2263 | { | |
2264 | struct imsm_map *map = get_imsm_map(dev, 0); | |
0556e1a2 | 2265 | struct imsm_map *prev = get_imsm_map(dev, dev->vol.migr_state); |
28bce06f | 2266 | int i, j; |
0556e1a2 DW |
2267 | |
2268 | /* merge any IMSM_ORD_REBUILD bits that were not successfully | |
2269 | * completed in the last migration. | |
2270 | * | |
28bce06f | 2271 | * FIXME add support for raid-level-migration |
0556e1a2 DW |
2272 | */ |
2273 | for (i = 0; i < prev->num_members; i++) | |
28bce06f AK |
2274 | for (j = 0; j < map->num_members; j++) |
2275 | /* during online capacity expansion | |
2276 | * disks position can be changed if takeover is used | |
2277 | */ | |
2278 | if (ord_to_idx(map->disk_ord_tbl[j]) == | |
2279 | ord_to_idx(prev->disk_ord_tbl[i])) { | |
2280 | map->disk_ord_tbl[j] |= prev->disk_ord_tbl[i]; | |
2281 | break; | |
2282 | } | |
f8f603f1 DW |
2283 | |
2284 | dev->vol.migr_state = 0; | |
28bce06f | 2285 | dev->vol.migr_type = 0; |
f8f603f1 DW |
2286 | dev->vol.curr_migr_unit = 0; |
2287 | map->map_state = map_state; | |
2288 | } | |
0e600426 | 2289 | #endif |
949c47a0 DW |
2290 | |
2291 | static int parse_raid_devices(struct intel_super *super) | |
2292 | { | |
2293 | int i; | |
2294 | struct imsm_dev *dev_new; | |
4d7b1503 DW |
2295 | size_t len, len_migr; |
2296 | size_t space_needed = 0; | |
2297 | struct imsm_super *mpb = super->anchor; | |
949c47a0 DW |
2298 | |
2299 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
2300 | struct imsm_dev *dev_iter = __get_imsm_dev(super->anchor, i); | |
ba2de7ba | 2301 | struct intel_dev *dv; |
949c47a0 | 2302 | |
4d7b1503 DW |
2303 | len = sizeof_imsm_dev(dev_iter, 0); |
2304 | len_migr = sizeof_imsm_dev(dev_iter, 1); | |
2305 | if (len_migr > len) | |
2306 | space_needed += len_migr - len; | |
2307 | ||
ba2de7ba DW |
2308 | dv = malloc(sizeof(*dv)); |
2309 | if (!dv) | |
2310 | return 1; | |
4d7b1503 | 2311 | dev_new = malloc(len_migr); |
ba2de7ba DW |
2312 | if (!dev_new) { |
2313 | free(dv); | |
949c47a0 | 2314 | return 1; |
ba2de7ba | 2315 | } |
949c47a0 | 2316 | imsm_copy_dev(dev_new, dev_iter); |
ba2de7ba DW |
2317 | dv->dev = dev_new; |
2318 | dv->index = i; | |
2319 | dv->next = super->devlist; | |
2320 | super->devlist = dv; | |
949c47a0 | 2321 | } |
cdddbdbc | 2322 | |
4d7b1503 DW |
2323 | /* ensure that super->buf is large enough when all raid devices |
2324 | * are migrating | |
2325 | */ | |
2326 | if (__le32_to_cpu(mpb->mpb_size) + space_needed > super->len) { | |
2327 | void *buf; | |
2328 | ||
2329 | len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + space_needed, 512); | |
2330 | if (posix_memalign(&buf, 512, len) != 0) | |
2331 | return 1; | |
2332 | ||
1f45a8ad DW |
2333 | memcpy(buf, super->buf, super->len); |
2334 | memset(buf + super->len, 0, len - super->len); | |
4d7b1503 DW |
2335 | free(super->buf); |
2336 | super->buf = buf; | |
2337 | super->len = len; | |
2338 | } | |
2339 | ||
cdddbdbc DW |
2340 | return 0; |
2341 | } | |
2342 | ||
604b746f JD |
2343 | /* retrieve a pointer to the bbm log which starts after all raid devices */ |
2344 | struct bbm_log *__get_imsm_bbm_log(struct imsm_super *mpb) | |
2345 | { | |
2346 | void *ptr = NULL; | |
2347 | ||
2348 | if (__le32_to_cpu(mpb->bbm_log_size)) { | |
2349 | ptr = mpb; | |
2350 | ptr += mpb->mpb_size - __le32_to_cpu(mpb->bbm_log_size); | |
2351 | } | |
2352 | ||
2353 | return ptr; | |
2354 | } | |
2355 | ||
d23fe947 | 2356 | static void __free_imsm(struct intel_super *super, int free_disks); |
9ca2c81c | 2357 | |
cdddbdbc DW |
2358 | /* load_imsm_mpb - read matrix metadata |
2359 | * allocates super->mpb to be freed by free_super | |
2360 | */ | |
2361 | static int load_imsm_mpb(int fd, struct intel_super *super, char *devname) | |
2362 | { | |
2363 | unsigned long long dsize; | |
cdddbdbc DW |
2364 | unsigned long long sectors; |
2365 | struct stat; | |
6416d527 | 2366 | struct imsm_super *anchor; |
cdddbdbc DW |
2367 | __u32 check_sum; |
2368 | ||
cdddbdbc | 2369 | get_dev_size(fd, NULL, &dsize); |
64436f06 N |
2370 | if (dsize < 1024) { |
2371 | if (devname) | |
2372 | fprintf(stderr, | |
2373 | Name ": %s: device to small for imsm\n", | |
2374 | devname); | |
2375 | return 1; | |
2376 | } | |
cdddbdbc DW |
2377 | |
2378 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) { | |
2379 | if (devname) | |
2380 | fprintf(stderr, | |
2381 | Name ": Cannot seek to anchor block on %s: %s\n", | |
2382 | devname, strerror(errno)); | |
2383 | return 1; | |
2384 | } | |
2385 | ||
949c47a0 | 2386 | if (posix_memalign((void**)&anchor, 512, 512) != 0) { |
ad97895e DW |
2387 | if (devname) |
2388 | fprintf(stderr, | |
2389 | Name ": Failed to allocate imsm anchor buffer" | |
2390 | " on %s\n", devname); | |
2391 | return 1; | |
2392 | } | |
949c47a0 | 2393 | if (read(fd, anchor, 512) != 512) { |
cdddbdbc DW |
2394 | if (devname) |
2395 | fprintf(stderr, | |
2396 | Name ": Cannot read anchor block on %s: %s\n", | |
2397 | devname, strerror(errno)); | |
6416d527 | 2398 | free(anchor); |
cdddbdbc DW |
2399 | return 1; |
2400 | } | |
2401 | ||
6416d527 | 2402 | if (strncmp((char *) anchor->sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) { |
cdddbdbc DW |
2403 | if (devname) |
2404 | fprintf(stderr, | |
2405 | Name ": no IMSM anchor on %s\n", devname); | |
6416d527 | 2406 | free(anchor); |
cdddbdbc DW |
2407 | return 2; |
2408 | } | |
2409 | ||
d23fe947 | 2410 | __free_imsm(super, 0); |
949c47a0 DW |
2411 | super->len = ROUND_UP(anchor->mpb_size, 512); |
2412 | if (posix_memalign(&super->buf, 512, super->len) != 0) { | |
cdddbdbc DW |
2413 | if (devname) |
2414 | fprintf(stderr, | |
2415 | Name ": unable to allocate %zu byte mpb buffer\n", | |
949c47a0 | 2416 | super->len); |
6416d527 | 2417 | free(anchor); |
cdddbdbc DW |
2418 | return 2; |
2419 | } | |
949c47a0 | 2420 | memcpy(super->buf, anchor, 512); |
cdddbdbc | 2421 | |
6416d527 NB |
2422 | sectors = mpb_sectors(anchor) - 1; |
2423 | free(anchor); | |
949c47a0 | 2424 | if (!sectors) { |
ecf45690 DW |
2425 | check_sum = __gen_imsm_checksum(super->anchor); |
2426 | if (check_sum != __le32_to_cpu(super->anchor->check_sum)) { | |
2427 | if (devname) | |
2428 | fprintf(stderr, | |
2429 | Name ": IMSM checksum %x != %x on %s\n", | |
2430 | check_sum, | |
2431 | __le32_to_cpu(super->anchor->check_sum), | |
2432 | devname); | |
2433 | return 2; | |
2434 | } | |
2435 | ||
a2b97981 | 2436 | return 0; |
949c47a0 | 2437 | } |
cdddbdbc DW |
2438 | |
2439 | /* read the extended mpb */ | |
2440 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) { | |
2441 | if (devname) | |
2442 | fprintf(stderr, | |
2443 | Name ": Cannot seek to extended mpb on %s: %s\n", | |
2444 | devname, strerror(errno)); | |
2445 | return 1; | |
2446 | } | |
2447 | ||
f21e18ca | 2448 | if ((unsigned)read(fd, super->buf + 512, super->len - 512) != super->len - 512) { |
cdddbdbc DW |
2449 | if (devname) |
2450 | fprintf(stderr, | |
2451 | Name ": Cannot read extended mpb on %s: %s\n", | |
2452 | devname, strerror(errno)); | |
2453 | return 2; | |
2454 | } | |
2455 | ||
949c47a0 DW |
2456 | check_sum = __gen_imsm_checksum(super->anchor); |
2457 | if (check_sum != __le32_to_cpu(super->anchor->check_sum)) { | |
cdddbdbc DW |
2458 | if (devname) |
2459 | fprintf(stderr, | |
2460 | Name ": IMSM checksum %x != %x on %s\n", | |
949c47a0 | 2461 | check_sum, __le32_to_cpu(super->anchor->check_sum), |
cdddbdbc | 2462 | devname); |
db575f3b | 2463 | return 3; |
cdddbdbc DW |
2464 | } |
2465 | ||
604b746f JD |
2466 | /* FIXME the BBM log is disk specific so we cannot use this global |
2467 | * buffer for all disks. Ok for now since we only look at the global | |
2468 | * bbm_log_size parameter to gate assembly | |
2469 | */ | |
2470 | super->bbm_log = __get_imsm_bbm_log(super->anchor); | |
2471 | ||
a2b97981 DW |
2472 | return 0; |
2473 | } | |
2474 | ||
2475 | static int | |
2476 | load_and_parse_mpb(int fd, struct intel_super *super, char *devname, int keep_fd) | |
2477 | { | |
2478 | int err; | |
2479 | ||
2480 | err = load_imsm_mpb(fd, super, devname); | |
2481 | if (err) | |
2482 | return err; | |
2483 | err = load_imsm_disk(fd, super, devname, keep_fd); | |
2484 | if (err) | |
2485 | return err; | |
2486 | err = parse_raid_devices(super); | |
4d7b1503 | 2487 | |
a2b97981 | 2488 | return err; |
cdddbdbc DW |
2489 | } |
2490 | ||
ae6aad82 DW |
2491 | static void __free_imsm_disk(struct dl *d) |
2492 | { | |
2493 | if (d->fd >= 0) | |
2494 | close(d->fd); | |
2495 | if (d->devname) | |
2496 | free(d->devname); | |
0dcecb2e DW |
2497 | if (d->e) |
2498 | free(d->e); | |
ae6aad82 DW |
2499 | free(d); |
2500 | ||
2501 | } | |
1a64be56 | 2502 | |
cdddbdbc DW |
2503 | static void free_imsm_disks(struct intel_super *super) |
2504 | { | |
47ee5a45 | 2505 | struct dl *d; |
cdddbdbc | 2506 | |
47ee5a45 DW |
2507 | while (super->disks) { |
2508 | d = super->disks; | |
cdddbdbc | 2509 | super->disks = d->next; |
ae6aad82 | 2510 | __free_imsm_disk(d); |
cdddbdbc | 2511 | } |
47ee5a45 DW |
2512 | while (super->missing) { |
2513 | d = super->missing; | |
2514 | super->missing = d->next; | |
2515 | __free_imsm_disk(d); | |
2516 | } | |
2517 | ||
cdddbdbc DW |
2518 | } |
2519 | ||
9ca2c81c | 2520 | /* free all the pieces hanging off of a super pointer */ |
d23fe947 | 2521 | static void __free_imsm(struct intel_super *super, int free_disks) |
cdddbdbc | 2522 | { |
9ca2c81c | 2523 | if (super->buf) { |
949c47a0 | 2524 | free(super->buf); |
9ca2c81c DW |
2525 | super->buf = NULL; |
2526 | } | |
d23fe947 DW |
2527 | if (free_disks) |
2528 | free_imsm_disks(super); | |
ba2de7ba | 2529 | free_devlist(super); |
88c32bb1 DW |
2530 | if (super->hba) { |
2531 | free((void *) super->hba); | |
2532 | super->hba = NULL; | |
2533 | } | |
cdddbdbc DW |
2534 | } |
2535 | ||
9ca2c81c DW |
2536 | static void free_imsm(struct intel_super *super) |
2537 | { | |
d23fe947 | 2538 | __free_imsm(super, 1); |
9ca2c81c DW |
2539 | free(super); |
2540 | } | |
cdddbdbc DW |
2541 | |
2542 | static void free_super_imsm(struct supertype *st) | |
2543 | { | |
2544 | struct intel_super *super = st->sb; | |
2545 | ||
2546 | if (!super) | |
2547 | return; | |
2548 | ||
2549 | free_imsm(super); | |
2550 | st->sb = NULL; | |
2551 | } | |
2552 | ||
49133e57 | 2553 | static struct intel_super *alloc_super(void) |
c2c087e6 DW |
2554 | { |
2555 | struct intel_super *super = malloc(sizeof(*super)); | |
2556 | ||
2557 | if (super) { | |
2558 | memset(super, 0, sizeof(*super)); | |
bf5a934a | 2559 | super->current_vol = -1; |
0dcecb2e | 2560 | super->create_offset = ~((__u32 ) 0); |
88c32bb1 DW |
2561 | if (!check_env("IMSM_NO_PLATFORM")) |
2562 | super->orom = find_imsm_orom(); | |
cceebc67 | 2563 | if (super->orom && !check_env("IMSM_TEST_OROM")) { |
88c32bb1 DW |
2564 | struct sys_dev *list, *ent; |
2565 | ||
2566 | /* find the first intel ahci controller */ | |
2567 | list = find_driver_devices("pci", "ahci"); | |
2568 | for (ent = list; ent; ent = ent->next) | |
2569 | if (devpath_to_vendor(ent->path) == 0x8086) | |
2570 | break; | |
2571 | if (ent) { | |
2572 | super->hba = ent->path; | |
2573 | ent->path = NULL; | |
2574 | } | |
2575 | free_sys_dev(&list); | |
2576 | } | |
c2c087e6 DW |
2577 | } |
2578 | ||
2579 | return super; | |
2580 | } | |
2581 | ||
cdddbdbc | 2582 | #ifndef MDASSEMBLE |
47ee5a45 DW |
2583 | /* find_missing - helper routine for load_super_imsm_all that identifies |
2584 | * disks that have disappeared from the system. This routine relies on | |
2585 | * the mpb being uptodate, which it is at load time. | |
2586 | */ | |
2587 | static int find_missing(struct intel_super *super) | |
2588 | { | |
2589 | int i; | |
2590 | struct imsm_super *mpb = super->anchor; | |
2591 | struct dl *dl; | |
2592 | struct imsm_disk *disk; | |
47ee5a45 DW |
2593 | |
2594 | for (i = 0; i < mpb->num_disks; i++) { | |
2595 | disk = __get_imsm_disk(mpb, i); | |
54c2c1ea | 2596 | dl = serial_to_dl(disk->serial, super); |
47ee5a45 DW |
2597 | if (dl) |
2598 | continue; | |
47ee5a45 DW |
2599 | |
2600 | dl = malloc(sizeof(*dl)); | |
2601 | if (!dl) | |
2602 | return 1; | |
2603 | dl->major = 0; | |
2604 | dl->minor = 0; | |
2605 | dl->fd = -1; | |
2606 | dl->devname = strdup("missing"); | |
2607 | dl->index = i; | |
2608 | serialcpy(dl->serial, disk->serial); | |
2609 | dl->disk = *disk; | |
689c9bf3 | 2610 | dl->e = NULL; |
47ee5a45 DW |
2611 | dl->next = super->missing; |
2612 | super->missing = dl; | |
2613 | } | |
2614 | ||
2615 | return 0; | |
2616 | } | |
2617 | ||
a2b97981 DW |
2618 | static struct intel_disk *disk_list_get(__u8 *serial, struct intel_disk *disk_list) |
2619 | { | |
2620 | struct intel_disk *idisk = disk_list; | |
2621 | ||
2622 | while (idisk) { | |
2623 | if (serialcmp(idisk->disk.serial, serial) == 0) | |
2624 | break; | |
2625 | idisk = idisk->next; | |
2626 | } | |
2627 | ||
2628 | return idisk; | |
2629 | } | |
2630 | ||
2631 | static int __prep_thunderdome(struct intel_super **table, int tbl_size, | |
2632 | struct intel_super *super, | |
2633 | struct intel_disk **disk_list) | |
2634 | { | |
2635 | struct imsm_disk *d = &super->disks->disk; | |
2636 | struct imsm_super *mpb = super->anchor; | |
2637 | int i, j; | |
2638 | ||
2639 | for (i = 0; i < tbl_size; i++) { | |
2640 | struct imsm_super *tbl_mpb = table[i]->anchor; | |
2641 | struct imsm_disk *tbl_d = &table[i]->disks->disk; | |
2642 | ||
2643 | if (tbl_mpb->family_num == mpb->family_num) { | |
2644 | if (tbl_mpb->check_sum == mpb->check_sum) { | |
2645 | dprintf("%s: mpb from %d:%d matches %d:%d\n", | |
2646 | __func__, super->disks->major, | |
2647 | super->disks->minor, | |
2648 | table[i]->disks->major, | |
2649 | table[i]->disks->minor); | |
2650 | break; | |
2651 | } | |
2652 | ||
2653 | if (((is_configured(d) && !is_configured(tbl_d)) || | |
2654 | is_configured(d) == is_configured(tbl_d)) && | |
2655 | tbl_mpb->generation_num < mpb->generation_num) { | |
2656 | /* current version of the mpb is a | |
2657 | * better candidate than the one in | |
2658 | * super_table, but copy over "cross | |
2659 | * generational" status | |
2660 | */ | |
2661 | struct intel_disk *idisk; | |
2662 | ||
2663 | dprintf("%s: mpb from %d:%d replaces %d:%d\n", | |
2664 | __func__, super->disks->major, | |
2665 | super->disks->minor, | |
2666 | table[i]->disks->major, | |
2667 | table[i]->disks->minor); | |
2668 | ||
2669 | idisk = disk_list_get(tbl_d->serial, *disk_list); | |
2670 | if (idisk && is_failed(&idisk->disk)) | |
2671 | tbl_d->status |= FAILED_DISK; | |
2672 | break; | |
2673 | } else { | |
2674 | struct intel_disk *idisk; | |
2675 | struct imsm_disk *disk; | |
2676 | ||
2677 | /* tbl_mpb is more up to date, but copy | |
2678 | * over cross generational status before | |
2679 | * returning | |
2680 | */ | |
2681 | disk = __serial_to_disk(d->serial, mpb, NULL); | |
2682 | if (disk && is_failed(disk)) | |
2683 | d->status |= FAILED_DISK; | |
2684 | ||
2685 | idisk = disk_list_get(d->serial, *disk_list); | |
2686 | if (idisk) { | |
2687 | idisk->owner = i; | |
2688 | if (disk && is_configured(disk)) | |
2689 | idisk->disk.status |= CONFIGURED_DISK; | |
2690 | } | |
2691 | ||
2692 | dprintf("%s: mpb from %d:%d prefer %d:%d\n", | |
2693 | __func__, super->disks->major, | |
2694 | super->disks->minor, | |
2695 | table[i]->disks->major, | |
2696 | table[i]->disks->minor); | |
2697 | ||
2698 | return tbl_size; | |
2699 | } | |
2700 | } | |
2701 | } | |
2702 | ||
2703 | if (i >= tbl_size) | |
2704 | table[tbl_size++] = super; | |
2705 | else | |
2706 | table[i] = super; | |
2707 | ||
2708 | /* update/extend the merged list of imsm_disk records */ | |
2709 | for (j = 0; j < mpb->num_disks; j++) { | |
2710 | struct imsm_disk *disk = __get_imsm_disk(mpb, j); | |
2711 | struct intel_disk *idisk; | |
2712 | ||
2713 | idisk = disk_list_get(disk->serial, *disk_list); | |
2714 | if (idisk) { | |
2715 | idisk->disk.status |= disk->status; | |
2716 | if (is_configured(&idisk->disk) || | |
2717 | is_failed(&idisk->disk)) | |
2718 | idisk->disk.status &= ~(SPARE_DISK); | |
2719 | } else { | |
2720 | idisk = calloc(1, sizeof(*idisk)); | |
2721 | if (!idisk) | |
2722 | return -1; | |
2723 | idisk->owner = IMSM_UNKNOWN_OWNER; | |
2724 | idisk->disk = *disk; | |
2725 | idisk->next = *disk_list; | |
2726 | *disk_list = idisk; | |
2727 | } | |
2728 | ||
2729 | if (serialcmp(idisk->disk.serial, d->serial) == 0) | |
2730 | idisk->owner = i; | |
2731 | } | |
2732 | ||
2733 | return tbl_size; | |
2734 | } | |
2735 | ||
2736 | static struct intel_super * | |
2737 | validate_members(struct intel_super *super, struct intel_disk *disk_list, | |
2738 | const int owner) | |
2739 | { | |
2740 | struct imsm_super *mpb = super->anchor; | |
2741 | int ok_count = 0; | |
2742 | int i; | |
2743 | ||
2744 | for (i = 0; i < mpb->num_disks; i++) { | |
2745 | struct imsm_disk *disk = __get_imsm_disk(mpb, i); | |
2746 | struct intel_disk *idisk; | |
2747 | ||
2748 | idisk = disk_list_get(disk->serial, disk_list); | |
2749 | if (idisk) { | |
2750 | if (idisk->owner == owner || | |
2751 | idisk->owner == IMSM_UNKNOWN_OWNER) | |
2752 | ok_count++; | |
2753 | else | |
2754 | dprintf("%s: '%.16s' owner %d != %d\n", | |
2755 | __func__, disk->serial, idisk->owner, | |
2756 | owner); | |
2757 | } else { | |
2758 | dprintf("%s: unknown disk %x [%d]: %.16s\n", | |
2759 | __func__, __le32_to_cpu(mpb->family_num), i, | |
2760 | disk->serial); | |
2761 | break; | |
2762 | } | |
2763 | } | |
2764 | ||
2765 | if (ok_count == mpb->num_disks) | |
2766 | return super; | |
2767 | return NULL; | |
2768 | } | |
2769 | ||
2770 | static void show_conflicts(__u32 family_num, struct intel_super *super_list) | |
2771 | { | |
2772 | struct intel_super *s; | |
2773 | ||
2774 | for (s = super_list; s; s = s->next) { | |
2775 | if (family_num != s->anchor->family_num) | |
2776 | continue; | |
2777 | fprintf(stderr, "Conflict, offlining family %#x on '%s'\n", | |
2778 | __le32_to_cpu(family_num), s->disks->devname); | |
2779 | } | |
2780 | } | |
2781 | ||
2782 | static struct intel_super * | |
2783 | imsm_thunderdome(struct intel_super **super_list, int len) | |
2784 | { | |
2785 | struct intel_super *super_table[len]; | |
2786 | struct intel_disk *disk_list = NULL; | |
2787 | struct intel_super *champion, *spare; | |
2788 | struct intel_super *s, **del; | |
2789 | int tbl_size = 0; | |
2790 | int conflict; | |
2791 | int i; | |
2792 | ||
2793 | memset(super_table, 0, sizeof(super_table)); | |
2794 | for (s = *super_list; s; s = s->next) | |
2795 | tbl_size = __prep_thunderdome(super_table, tbl_size, s, &disk_list); | |
2796 | ||
2797 | for (i = 0; i < tbl_size; i++) { | |
2798 | struct imsm_disk *d; | |
2799 | struct intel_disk *idisk; | |
2800 | struct imsm_super *mpb = super_table[i]->anchor; | |
2801 | ||
2802 | s = super_table[i]; | |
2803 | d = &s->disks->disk; | |
2804 | ||
2805 | /* 'd' must appear in merged disk list for its | |
2806 | * configuration to be valid | |
2807 | */ | |
2808 | idisk = disk_list_get(d->serial, disk_list); | |
2809 | if (idisk && idisk->owner == i) | |
2810 | s = validate_members(s, disk_list, i); | |
2811 | else | |
2812 | s = NULL; | |
2813 | ||
2814 | if (!s) | |
2815 | dprintf("%s: marking family: %#x from %d:%d offline\n", | |
2816 | __func__, mpb->family_num, | |
2817 | super_table[i]->disks->major, | |
2818 | super_table[i]->disks->minor); | |
2819 | super_table[i] = s; | |
2820 | } | |
2821 | ||
2822 | /* This is where the mdadm implementation differs from the Windows | |
2823 | * driver which has no strict concept of a container. We can only | |
2824 | * assemble one family from a container, so when returning a prodigal | |
2825 | * array member to this system the code will not be able to disambiguate | |
2826 | * the container contents that should be assembled ("foreign" versus | |
2827 | * "local"). It requires user intervention to set the orig_family_num | |
2828 | * to a new value to establish a new container. The Windows driver in | |
2829 | * this situation fixes up the volume name in place and manages the | |
2830 | * foreign array as an independent entity. | |
2831 | */ | |
2832 | s = NULL; | |
2833 | spare = NULL; | |
2834 | conflict = 0; | |
2835 | for (i = 0; i < tbl_size; i++) { | |
2836 | struct intel_super *tbl_ent = super_table[i]; | |
2837 | int is_spare = 0; | |
2838 | ||
2839 | if (!tbl_ent) | |
2840 | continue; | |
2841 | ||
2842 | if (tbl_ent->anchor->num_raid_devs == 0) { | |
2843 | spare = tbl_ent; | |
2844 | is_spare = 1; | |
2845 | } | |
2846 | ||
2847 | if (s && !is_spare) { | |
2848 | show_conflicts(tbl_ent->anchor->family_num, *super_list); | |
2849 | conflict++; | |
2850 | } else if (!s && !is_spare) | |
2851 | s = tbl_ent; | |
2852 | } | |
2853 | ||
2854 | if (!s) | |
2855 | s = spare; | |
2856 | if (!s) { | |
2857 | champion = NULL; | |
2858 | goto out; | |
2859 | } | |
2860 | champion = s; | |
2861 | ||
2862 | if (conflict) | |
2863 | fprintf(stderr, "Chose family %#x on '%s', " | |
2864 | "assemble conflicts to new container with '--update=uuid'\n", | |
2865 | __le32_to_cpu(s->anchor->family_num), s->disks->devname); | |
2866 | ||
2867 | /* collect all dl's onto 'champion', and update them to | |
2868 | * champion's version of the status | |
2869 | */ | |
2870 | for (s = *super_list; s; s = s->next) { | |
2871 | struct imsm_super *mpb = champion->anchor; | |
2872 | struct dl *dl = s->disks; | |
2873 | ||
2874 | if (s == champion) | |
2875 | continue; | |
2876 | ||
2877 | for (i = 0; i < mpb->num_disks; i++) { | |
2878 | struct imsm_disk *disk; | |
2879 | ||
2880 | disk = __serial_to_disk(dl->serial, mpb, &dl->index); | |
2881 | if (disk) { | |
2882 | dl->disk = *disk; | |
2883 | /* only set index on disks that are a member of | |
2884 | * a populated contianer, i.e. one with | |
2885 | * raid_devs | |
2886 | */ | |
2887 | if (is_failed(&dl->disk)) | |
2888 | dl->index = -2; | |
2889 | else if (is_spare(&dl->disk)) | |
2890 | dl->index = -1; | |
2891 | break; | |
2892 | } | |
2893 | } | |
2894 | ||
2895 | if (i >= mpb->num_disks) { | |
2896 | struct intel_disk *idisk; | |
2897 | ||
2898 | idisk = disk_list_get(dl->serial, disk_list); | |
ecf408e9 | 2899 | if (idisk && is_spare(&idisk->disk) && |
a2b97981 DW |
2900 | !is_failed(&idisk->disk) && !is_configured(&idisk->disk)) |
2901 | dl->index = -1; | |
2902 | else { | |
2903 | dl->index = -2; | |
2904 | continue; | |
2905 | } | |
2906 | } | |
2907 | ||
2908 | dl->next = champion->disks; | |
2909 | champion->disks = dl; | |
2910 | s->disks = NULL; | |
2911 | } | |
2912 | ||
2913 | /* delete 'champion' from super_list */ | |
2914 | for (del = super_list; *del; ) { | |
2915 | if (*del == champion) { | |
2916 | *del = (*del)->next; | |
2917 | break; | |
2918 | } else | |
2919 | del = &(*del)->next; | |
2920 | } | |
2921 | champion->next = NULL; | |
2922 | ||
2923 | out: | |
2924 | while (disk_list) { | |
2925 | struct intel_disk *idisk = disk_list; | |
2926 | ||
2927 | disk_list = disk_list->next; | |
2928 | free(idisk); | |
2929 | } | |
2930 | ||
2931 | return champion; | |
2932 | } | |
2933 | ||
cdddbdbc | 2934 | static int load_super_imsm_all(struct supertype *st, int fd, void **sbp, |
e1902a7b | 2935 | char *devname) |
cdddbdbc DW |
2936 | { |
2937 | struct mdinfo *sra; | |
a2b97981 DW |
2938 | struct intel_super *super_list = NULL; |
2939 | struct intel_super *super = NULL; | |
db575f3b | 2940 | int devnum = fd2devnum(fd); |
a2b97981 | 2941 | struct mdinfo *sd; |
db575f3b | 2942 | int retry; |
a2b97981 DW |
2943 | int err = 0; |
2944 | int i; | |
dab4a513 DW |
2945 | |
2946 | /* check if 'fd' an opened container */ | |
b526e52d | 2947 | sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE); |
cdddbdbc DW |
2948 | if (!sra) |
2949 | return 1; | |
2950 | ||
2951 | if (sra->array.major_version != -1 || | |
2952 | sra->array.minor_version != -2 || | |
1602d52c AW |
2953 | strcmp(sra->text_version, "imsm") != 0) { |
2954 | err = 1; | |
2955 | goto error; | |
2956 | } | |
a2b97981 DW |
2957 | /* load all mpbs */ |
2958 | for (sd = sra->devs, i = 0; sd; sd = sd->next, i++) { | |
49133e57 | 2959 | struct intel_super *s = alloc_super(); |
7a6ecd55 | 2960 | char nm[32]; |
a2b97981 DW |
2961 | int dfd; |
2962 | ||
2963 | err = 1; | |
2964 | if (!s) | |
2965 | goto error; | |
2966 | s->next = super_list; | |
2967 | super_list = s; | |
cdddbdbc | 2968 | |
a2b97981 | 2969 | err = 2; |
cdddbdbc | 2970 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); |
e1902a7b | 2971 | dfd = dev_open(nm, O_RDWR); |
a2b97981 DW |
2972 | if (dfd < 0) |
2973 | goto error; | |
2974 | ||
e1902a7b | 2975 | err = load_and_parse_mpb(dfd, s, NULL, 1); |
db575f3b DW |
2976 | |
2977 | /* retry the load if we might have raced against mdmon */ | |
a2b97981 | 2978 | if (err == 3 && mdmon_running(devnum)) |
db575f3b DW |
2979 | for (retry = 0; retry < 3; retry++) { |
2980 | usleep(3000); | |
e1902a7b | 2981 | err = load_and_parse_mpb(dfd, s, NULL, 1); |
a2b97981 | 2982 | if (err != 3) |
db575f3b DW |
2983 | break; |
2984 | } | |
a2b97981 DW |
2985 | if (err) |
2986 | goto error; | |
cdddbdbc DW |
2987 | } |
2988 | ||
a2b97981 DW |
2989 | /* all mpbs enter, maybe one leaves */ |
2990 | super = imsm_thunderdome(&super_list, i); | |
2991 | if (!super) { | |
2992 | err = 1; | |
2993 | goto error; | |
cdddbdbc DW |
2994 | } |
2995 | ||
47ee5a45 DW |
2996 | if (find_missing(super) != 0) { |
2997 | free_imsm(super); | |
a2b97981 DW |
2998 | err = 2; |
2999 | goto error; | |
47ee5a45 | 3000 | } |
a2b97981 DW |
3001 | err = 0; |
3002 | ||
3003 | error: | |
3004 | while (super_list) { | |
3005 | struct intel_super *s = super_list; | |
3006 | ||
3007 | super_list = super_list->next; | |
3008 | free_imsm(s); | |
3009 | } | |
1602d52c | 3010 | sysfs_free(sra); |
a2b97981 DW |
3011 | |
3012 | if (err) | |
3013 | return err; | |
f7e7067b | 3014 | |
cdddbdbc | 3015 | *sbp = super; |
db575f3b | 3016 | st->container_dev = devnum; |
a2b97981 | 3017 | if (err == 0 && st->ss == NULL) { |
bf5a934a | 3018 | st->ss = &super_imsm; |
cdddbdbc DW |
3019 | st->minor_version = 0; |
3020 | st->max_devs = IMSM_MAX_DEVICES; | |
3021 | } | |
cdddbdbc DW |
3022 | return 0; |
3023 | } | |
2b959fbf N |
3024 | |
3025 | static int load_container_imsm(struct supertype *st, int fd, char *devname) | |
3026 | { | |
3027 | return load_super_imsm_all(st, fd, &st->sb, devname); | |
3028 | } | |
cdddbdbc DW |
3029 | #endif |
3030 | ||
3031 | static int load_super_imsm(struct supertype *st, int fd, char *devname) | |
3032 | { | |
3033 | struct intel_super *super; | |
3034 | int rv; | |
3035 | ||
3036 | #ifndef MDASSEMBLE | |
e1902a7b | 3037 | if (load_super_imsm_all(st, fd, &st->sb, devname) == 0) |
cdddbdbc DW |
3038 | return 0; |
3039 | #endif | |
3040 | ||
691c6ee1 N |
3041 | if (test_partition(fd)) |
3042 | /* IMSM not allowed on partitions */ | |
3043 | return 1; | |
3044 | ||
37424f13 DW |
3045 | free_super_imsm(st); |
3046 | ||
49133e57 | 3047 | super = alloc_super(); |
cdddbdbc DW |
3048 | if (!super) { |
3049 | fprintf(stderr, | |
3050 | Name ": malloc of %zu failed.\n", | |
3051 | sizeof(*super)); | |
3052 | return 1; | |
3053 | } | |
3054 | ||
a2b97981 | 3055 | rv = load_and_parse_mpb(fd, super, devname, 0); |
cdddbdbc DW |
3056 | |
3057 | if (rv) { | |
3058 | if (devname) | |
3059 | fprintf(stderr, | |
3060 | Name ": Failed to load all information " | |
3061 | "sections on %s\n", devname); | |
3062 | free_imsm(super); | |
3063 | return rv; | |
3064 | } | |
3065 | ||
3066 | st->sb = super; | |
3067 | if (st->ss == NULL) { | |
3068 | st->ss = &super_imsm; | |
3069 | st->minor_version = 0; | |
3070 | st->max_devs = IMSM_MAX_DEVICES; | |
3071 | } | |
cdddbdbc DW |
3072 | return 0; |
3073 | } | |
3074 | ||
ef6ffade DW |
3075 | static __u16 info_to_blocks_per_strip(mdu_array_info_t *info) |
3076 | { | |
3077 | if (info->level == 1) | |
3078 | return 128; | |
3079 | return info->chunk_size >> 9; | |
3080 | } | |
3081 | ||
ff596308 | 3082 | static __u32 info_to_num_data_stripes(mdu_array_info_t *info, int num_domains) |
ef6ffade DW |
3083 | { |
3084 | __u32 num_stripes; | |
3085 | ||
3086 | num_stripes = (info->size * 2) / info_to_blocks_per_strip(info); | |
ff596308 | 3087 | num_stripes /= num_domains; |
ef6ffade DW |
3088 | |
3089 | return num_stripes; | |
3090 | } | |
3091 | ||
fcfd9599 DW |
3092 | static __u32 info_to_blocks_per_member(mdu_array_info_t *info) |
3093 | { | |
4025c288 DW |
3094 | if (info->level == 1) |
3095 | return info->size * 2; | |
3096 | else | |
3097 | return (info->size * 2) & ~(info_to_blocks_per_strip(info) - 1); | |
fcfd9599 DW |
3098 | } |
3099 | ||
4d1313e9 DW |
3100 | static void imsm_update_version_info(struct intel_super *super) |
3101 | { | |
3102 | /* update the version and attributes */ | |
3103 | struct imsm_super *mpb = super->anchor; | |
3104 | char *version; | |
3105 | struct imsm_dev *dev; | |
3106 | struct imsm_map *map; | |
3107 | int i; | |
3108 | ||
3109 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
3110 | dev = get_imsm_dev(super, i); | |
3111 | map = get_imsm_map(dev, 0); | |
3112 | if (__le32_to_cpu(dev->size_high) > 0) | |
3113 | mpb->attributes |= MPB_ATTRIB_2TB; | |
3114 | ||
3115 | /* FIXME detect when an array spans a port multiplier */ | |
3116 | #if 0 | |
3117 | mpb->attributes |= MPB_ATTRIB_PM; | |
3118 | #endif | |
3119 | ||
3120 | if (mpb->num_raid_devs > 1 || | |
3121 | mpb->attributes != MPB_ATTRIB_CHECKSUM_VERIFY) { | |
3122 | version = MPB_VERSION_ATTRIBS; | |
3123 | switch (get_imsm_raid_level(map)) { | |
3124 | case 0: mpb->attributes |= MPB_ATTRIB_RAID0; break; | |
3125 | case 1: mpb->attributes |= MPB_ATTRIB_RAID1; break; | |
3126 | case 10: mpb->attributes |= MPB_ATTRIB_RAID10; break; | |
3127 | case 5: mpb->attributes |= MPB_ATTRIB_RAID5; break; | |
3128 | } | |
3129 | } else { | |
3130 | if (map->num_members >= 5) | |
3131 | version = MPB_VERSION_5OR6_DISK_ARRAY; | |
3132 | else if (dev->status == DEV_CLONE_N_GO) | |
3133 | version = MPB_VERSION_CNG; | |
3134 | else if (get_imsm_raid_level(map) == 5) | |
3135 | version = MPB_VERSION_RAID5; | |
3136 | else if (map->num_members >= 3) | |
3137 | version = MPB_VERSION_3OR4_DISK_ARRAY; | |
3138 | else if (get_imsm_raid_level(map) == 1) | |
3139 | version = MPB_VERSION_RAID1; | |
3140 | else | |
3141 | version = MPB_VERSION_RAID0; | |
3142 | } | |
3143 | strcpy(((char *) mpb->sig) + strlen(MPB_SIGNATURE), version); | |
3144 | } | |
3145 | } | |
3146 | ||
aa534678 DW |
3147 | static int check_name(struct intel_super *super, char *name, int quiet) |
3148 | { | |
3149 | struct imsm_super *mpb = super->anchor; | |
3150 | char *reason = NULL; | |
3151 | int i; | |
3152 | ||
3153 | if (strlen(name) > MAX_RAID_SERIAL_LEN) | |
3154 | reason = "must be 16 characters or less"; | |
3155 | ||
3156 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
3157 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
3158 | ||
3159 | if (strncmp((char *) dev->volume, name, MAX_RAID_SERIAL_LEN) == 0) { | |
3160 | reason = "already exists"; | |
3161 | break; | |
3162 | } | |
3163 | } | |
3164 | ||
3165 | if (reason && !quiet) | |
3166 | fprintf(stderr, Name ": imsm volume name %s\n", reason); | |
3167 | ||
3168 | return !reason; | |
3169 | } | |
3170 | ||
8b353278 DW |
3171 | static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info, |
3172 | unsigned long long size, char *name, | |
3173 | char *homehost, int *uuid) | |
cdddbdbc | 3174 | { |
c2c087e6 DW |
3175 | /* We are creating a volume inside a pre-existing container. |
3176 | * so st->sb is already set. | |
3177 | */ | |
3178 | struct intel_super *super = st->sb; | |
949c47a0 | 3179 | struct imsm_super *mpb = super->anchor; |
ba2de7ba | 3180 | struct intel_dev *dv; |
c2c087e6 DW |
3181 | struct imsm_dev *dev; |
3182 | struct imsm_vol *vol; | |
3183 | struct imsm_map *map; | |
3184 | int idx = mpb->num_raid_devs; | |
3185 | int i; | |
3186 | unsigned long long array_blocks; | |
2c092cad | 3187 | size_t size_old, size_new; |
ff596308 | 3188 | __u32 num_data_stripes; |
cdddbdbc | 3189 | |
88c32bb1 | 3190 | if (super->orom && mpb->num_raid_devs >= super->orom->vpa) { |
c2c087e6 | 3191 | fprintf(stderr, Name": This imsm-container already has the " |
88c32bb1 | 3192 | "maximum of %d volumes\n", super->orom->vpa); |
c2c087e6 DW |
3193 | return 0; |
3194 | } | |
3195 | ||
2c092cad DW |
3196 | /* ensure the mpb is large enough for the new data */ |
3197 | size_old = __le32_to_cpu(mpb->mpb_size); | |
3198 | size_new = disks_to_mpb_size(info->nr_disks); | |
3199 | if (size_new > size_old) { | |
3200 | void *mpb_new; | |
3201 | size_t size_round = ROUND_UP(size_new, 512); | |
3202 | ||
3203 | if (posix_memalign(&mpb_new, 512, size_round) != 0) { | |
3204 | fprintf(stderr, Name": could not allocate new mpb\n"); | |
3205 | return 0; | |
3206 | } | |
3207 | memcpy(mpb_new, mpb, size_old); | |
3208 | free(mpb); | |
3209 | mpb = mpb_new; | |
949c47a0 | 3210 | super->anchor = mpb_new; |
2c092cad DW |
3211 | mpb->mpb_size = __cpu_to_le32(size_new); |
3212 | memset(mpb_new + size_old, 0, size_round - size_old); | |
3213 | } | |
bf5a934a | 3214 | super->current_vol = idx; |
d23fe947 DW |
3215 | /* when creating the first raid device in this container set num_disks |
3216 | * to zero, i.e. delete this spare and add raid member devices in | |
3217 | * add_to_super_imsm_volume() | |
3218 | */ | |
3219 | if (super->current_vol == 0) | |
3220 | mpb->num_disks = 0; | |
5a038140 | 3221 | |
aa534678 DW |
3222 | if (!check_name(super, name, 0)) |
3223 | return 0; | |
ba2de7ba DW |
3224 | dv = malloc(sizeof(*dv)); |
3225 | if (!dv) { | |
3226 | fprintf(stderr, Name ": failed to allocate device list entry\n"); | |
3227 | return 0; | |
3228 | } | |
949c47a0 DW |
3229 | dev = malloc(sizeof(*dev) + sizeof(__u32) * (info->raid_disks - 1)); |
3230 | if (!dev) { | |
ba2de7ba | 3231 | free(dv); |
949c47a0 DW |
3232 | fprintf(stderr, Name": could not allocate raid device\n"); |
3233 | return 0; | |
3234 | } | |
c2c087e6 | 3235 | strncpy((char *) dev->volume, name, MAX_RAID_SERIAL_LEN); |
03bcbc65 DW |
3236 | if (info->level == 1) |
3237 | array_blocks = info_to_blocks_per_member(info); | |
3238 | else | |
3239 | array_blocks = calc_array_size(info->level, info->raid_disks, | |
3240 | info->layout, info->chunk_size, | |
3241 | info->size*2); | |
979d38be DW |
3242 | /* round array size down to closest MB */ |
3243 | array_blocks = (array_blocks >> SECT_PER_MB_SHIFT) << SECT_PER_MB_SHIFT; | |
3244 | ||
c2c087e6 DW |
3245 | dev->size_low = __cpu_to_le32((__u32) array_blocks); |
3246 | dev->size_high = __cpu_to_le32((__u32) (array_blocks >> 32)); | |
3247 | dev->status = __cpu_to_le32(0); | |
3248 | dev->reserved_blocks = __cpu_to_le32(0); | |
3249 | vol = &dev->vol; | |
3250 | vol->migr_state = 0; | |
1484e727 | 3251 | set_migr_type(dev, MIGR_INIT); |
c2c087e6 | 3252 | vol->dirty = 0; |
f8f603f1 | 3253 | vol->curr_migr_unit = 0; |
a965f303 | 3254 | map = get_imsm_map(dev, 0); |
0dcecb2e | 3255 | map->pba_of_lba0 = __cpu_to_le32(super->create_offset); |
fcfd9599 | 3256 | map->blocks_per_member = __cpu_to_le32(info_to_blocks_per_member(info)); |
ef6ffade | 3257 | map->blocks_per_strip = __cpu_to_le16(info_to_blocks_per_strip(info)); |
0556e1a2 | 3258 | map->failed_disk_num = ~0; |
c2c087e6 DW |
3259 | map->map_state = info->level ? IMSM_T_STATE_UNINITIALIZED : |
3260 | IMSM_T_STATE_NORMAL; | |
252d23c0 | 3261 | map->ddf = 1; |
ef6ffade DW |
3262 | |
3263 | if (info->level == 1 && info->raid_disks > 2) { | |
38950822 AW |
3264 | free(dev); |
3265 | free(dv); | |
ef6ffade DW |
3266 | fprintf(stderr, Name": imsm does not support more than 2 disks" |
3267 | "in a raid1 volume\n"); | |
3268 | return 0; | |
3269 | } | |
81062a36 DW |
3270 | |
3271 | map->raid_level = info->level; | |
4d1313e9 | 3272 | if (info->level == 10) { |
c2c087e6 | 3273 | map->raid_level = 1; |
4d1313e9 | 3274 | map->num_domains = info->raid_disks / 2; |
81062a36 DW |
3275 | } else if (info->level == 1) |
3276 | map->num_domains = info->raid_disks; | |
3277 | else | |
ff596308 | 3278 | map->num_domains = 1; |
81062a36 | 3279 | |
ff596308 DW |
3280 | num_data_stripes = info_to_num_data_stripes(info, map->num_domains); |
3281 | map->num_data_stripes = __cpu_to_le32(num_data_stripes); | |
ef6ffade | 3282 | |
c2c087e6 DW |
3283 | map->num_members = info->raid_disks; |
3284 | for (i = 0; i < map->num_members; i++) { | |
3285 | /* initialized in add_to_super */ | |
4eb26970 | 3286 | set_imsm_ord_tbl_ent(map, i, IMSM_ORD_REBUILD); |
c2c087e6 | 3287 | } |
949c47a0 | 3288 | mpb->num_raid_devs++; |
ba2de7ba DW |
3289 | |
3290 | dv->dev = dev; | |
3291 | dv->index = super->current_vol; | |
3292 | dv->next = super->devlist; | |
3293 | super->devlist = dv; | |
c2c087e6 | 3294 | |
4d1313e9 DW |
3295 | imsm_update_version_info(super); |
3296 | ||
c2c087e6 | 3297 | return 1; |
cdddbdbc DW |
3298 | } |
3299 | ||
bf5a934a DW |
3300 | static int init_super_imsm(struct supertype *st, mdu_array_info_t *info, |
3301 | unsigned long long size, char *name, | |
3302 | char *homehost, int *uuid) | |
3303 | { | |
3304 | /* This is primarily called by Create when creating a new array. | |
3305 | * We will then get add_to_super called for each component, and then | |
3306 | * write_init_super called to write it out to each device. | |
3307 | * For IMSM, Create can create on fresh devices or on a pre-existing | |
3308 | * array. | |
3309 | * To create on a pre-existing array a different method will be called. | |
3310 | * This one is just for fresh drives. | |
3311 | */ | |
3312 | struct intel_super *super; | |
3313 | struct imsm_super *mpb; | |
3314 | size_t mpb_size; | |
4d1313e9 | 3315 | char *version; |
bf5a934a | 3316 | |
bf5a934a | 3317 | if (st->sb) |
e683ca88 DW |
3318 | return init_super_imsm_volume(st, info, size, name, homehost, uuid); |
3319 | ||
3320 | if (info) | |
3321 | mpb_size = disks_to_mpb_size(info->nr_disks); | |
3322 | else | |
3323 | mpb_size = 512; | |
bf5a934a | 3324 | |
49133e57 | 3325 | super = alloc_super(); |
e683ca88 | 3326 | if (super && posix_memalign(&super->buf, 512, mpb_size) != 0) { |
bf5a934a | 3327 | free(super); |
e683ca88 DW |
3328 | super = NULL; |
3329 | } | |
3330 | if (!super) { | |
3331 | fprintf(stderr, Name | |
3332 | ": %s could not allocate superblock\n", __func__); | |
bf5a934a DW |
3333 | return 0; |
3334 | } | |
e683ca88 | 3335 | memset(super->buf, 0, mpb_size); |
ef649044 | 3336 | mpb = super->buf; |
e683ca88 DW |
3337 | mpb->mpb_size = __cpu_to_le32(mpb_size); |
3338 | st->sb = super; | |
3339 | ||
3340 | if (info == NULL) { | |
3341 | /* zeroing superblock */ | |
3342 | return 0; | |
3343 | } | |
bf5a934a | 3344 | |
4d1313e9 DW |
3345 | mpb->attributes = MPB_ATTRIB_CHECKSUM_VERIFY; |
3346 | ||
3347 | version = (char *) mpb->sig; | |
3348 | strcpy(version, MPB_SIGNATURE); | |
3349 | version += strlen(MPB_SIGNATURE); | |
3350 | strcpy(version, MPB_VERSION_RAID0); | |
bf5a934a | 3351 | |
bf5a934a DW |
3352 | return 1; |
3353 | } | |
3354 | ||
0e600426 | 3355 | #ifndef MDASSEMBLE |
f20c3968 | 3356 | static int add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk, |
bf5a934a DW |
3357 | int fd, char *devname) |
3358 | { | |
3359 | struct intel_super *super = st->sb; | |
d23fe947 | 3360 | struct imsm_super *mpb = super->anchor; |
bf5a934a DW |
3361 | struct dl *dl; |
3362 | struct imsm_dev *dev; | |
3363 | struct imsm_map *map; | |
4eb26970 | 3364 | int slot; |
bf5a934a | 3365 | |
949c47a0 | 3366 | dev = get_imsm_dev(super, super->current_vol); |
a965f303 | 3367 | map = get_imsm_map(dev, 0); |
bf5a934a | 3368 | |
208933a7 N |
3369 | if (! (dk->state & (1<<MD_DISK_SYNC))) { |
3370 | fprintf(stderr, Name ": %s: Cannot add spare devices to IMSM volume\n", | |
3371 | devname); | |
3372 | return 1; | |
3373 | } | |
3374 | ||
efb30e7f DW |
3375 | if (fd == -1) { |
3376 | /* we're doing autolayout so grab the pre-marked (in | |
3377 | * validate_geometry) raid_disk | |
3378 | */ | |
3379 | for (dl = super->disks; dl; dl = dl->next) | |
3380 | if (dl->raiddisk == dk->raid_disk) | |
3381 | break; | |
3382 | } else { | |
3383 | for (dl = super->disks; dl ; dl = dl->next) | |
3384 | if (dl->major == dk->major && | |
3385 | dl->minor == dk->minor) | |
3386 | break; | |
3387 | } | |
d23fe947 | 3388 | |
208933a7 N |
3389 | if (!dl) { |
3390 | fprintf(stderr, Name ": %s is not a member of the same container\n", devname); | |
f20c3968 | 3391 | return 1; |
208933a7 | 3392 | } |
bf5a934a | 3393 | |
d23fe947 DW |
3394 | /* add a pristine spare to the metadata */ |
3395 | if (dl->index < 0) { | |
3396 | dl->index = super->anchor->num_disks; | |
3397 | super->anchor->num_disks++; | |
3398 | } | |
4eb26970 DW |
3399 | /* Check the device has not already been added */ |
3400 | slot = get_imsm_disk_slot(map, dl->index); | |
3401 | if (slot >= 0 && | |
98130f40 | 3402 | (get_imsm_ord_tbl_ent(dev, slot, -1) & IMSM_ORD_REBUILD) == 0) { |
4eb26970 DW |
3403 | fprintf(stderr, Name ": %s has been included in this array twice\n", |
3404 | devname); | |
3405 | return 1; | |
3406 | } | |
be73972f | 3407 | set_imsm_ord_tbl_ent(map, dk->number, dl->index); |
ee5aad5a | 3408 | dl->disk.status = CONFIGURED_DISK; |
d23fe947 DW |
3409 | |
3410 | /* if we are creating the first raid device update the family number */ | |
3411 | if (super->current_vol == 0) { | |
3412 | __u32 sum; | |
3413 | struct imsm_dev *_dev = __get_imsm_dev(mpb, 0); | |
3414 | struct imsm_disk *_disk = __get_imsm_disk(mpb, dl->index); | |
3415 | ||
791b666a AW |
3416 | if (!_dev || !_disk) { |
3417 | fprintf(stderr, Name ": BUG mpb setup error\n"); | |
3418 | return 1; | |
3419 | } | |
d23fe947 DW |
3420 | *_dev = *dev; |
3421 | *_disk = dl->disk; | |
148acb7b DW |
3422 | sum = random32(); |
3423 | sum += __gen_imsm_checksum(mpb); | |
d23fe947 | 3424 | mpb->family_num = __cpu_to_le32(sum); |
148acb7b | 3425 | mpb->orig_family_num = mpb->family_num; |
d23fe947 | 3426 | } |
f20c3968 DW |
3427 | |
3428 | return 0; | |
bf5a934a DW |
3429 | } |
3430 | ||
f20c3968 | 3431 | static int add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk, |
cdddbdbc DW |
3432 | int fd, char *devname) |
3433 | { | |
c2c087e6 | 3434 | struct intel_super *super = st->sb; |
c2c087e6 DW |
3435 | struct dl *dd; |
3436 | unsigned long long size; | |
f2f27e63 | 3437 | __u32 id; |
c2c087e6 DW |
3438 | int rv; |
3439 | struct stat stb; | |
3440 | ||
88c32bb1 DW |
3441 | /* if we are on an RAID enabled platform check that the disk is |
3442 | * attached to the raid controller | |
3443 | */ | |
3444 | if (super->hba && !disk_attached_to_hba(fd, super->hba)) { | |
3445 | fprintf(stderr, | |
3446 | Name ": %s is not attached to the raid controller: %s\n", | |
3447 | devname ? : "disk", super->hba); | |
3448 | return 1; | |
3449 | } | |
3450 | ||
f20c3968 DW |
3451 | if (super->current_vol >= 0) |
3452 | return add_to_super_imsm_volume(st, dk, fd, devname); | |
bf5a934a | 3453 | |
c2c087e6 DW |
3454 | fstat(fd, &stb); |
3455 | dd = malloc(sizeof(*dd)); | |
b9f594fe | 3456 | if (!dd) { |
c2c087e6 DW |
3457 | fprintf(stderr, |
3458 | Name ": malloc failed %s:%d.\n", __func__, __LINE__); | |
f20c3968 | 3459 | return 1; |
c2c087e6 DW |
3460 | } |
3461 | memset(dd, 0, sizeof(*dd)); | |
3462 | dd->major = major(stb.st_rdev); | |
3463 | dd->minor = minor(stb.st_rdev); | |
b9f594fe | 3464 | dd->index = -1; |
c2c087e6 | 3465 | dd->devname = devname ? strdup(devname) : NULL; |
c2c087e6 | 3466 | dd->fd = fd; |
689c9bf3 | 3467 | dd->e = NULL; |
1a64be56 | 3468 | dd->action = DISK_ADD; |
c2c087e6 | 3469 | rv = imsm_read_serial(fd, devname, dd->serial); |
32ba9157 | 3470 | if (rv) { |
c2c087e6 | 3471 | fprintf(stderr, |
0030e8d6 | 3472 | Name ": failed to retrieve scsi serial, aborting\n"); |
949c47a0 | 3473 | free(dd); |
0030e8d6 | 3474 | abort(); |
c2c087e6 DW |
3475 | } |
3476 | ||
c2c087e6 DW |
3477 | get_dev_size(fd, NULL, &size); |
3478 | size /= 512; | |
1f24f035 | 3479 | serialcpy(dd->disk.serial, dd->serial); |
b9f594fe | 3480 | dd->disk.total_blocks = __cpu_to_le32(size); |
ee5aad5a | 3481 | dd->disk.status = SPARE_DISK; |
c2c087e6 | 3482 | if (sysfs_disk_to_scsi_id(fd, &id) == 0) |
b9f594fe | 3483 | dd->disk.scsi_id = __cpu_to_le32(id); |
c2c087e6 | 3484 | else |
b9f594fe | 3485 | dd->disk.scsi_id = __cpu_to_le32(0); |
43dad3d6 DW |
3486 | |
3487 | if (st->update_tail) { | |
1a64be56 LM |
3488 | dd->next = super->disk_mgmt_list; |
3489 | super->disk_mgmt_list = dd; | |
43dad3d6 DW |
3490 | } else { |
3491 | dd->next = super->disks; | |
3492 | super->disks = dd; | |
3493 | } | |
f20c3968 DW |
3494 | |
3495 | return 0; | |
cdddbdbc DW |
3496 | } |
3497 | ||
1a64be56 LM |
3498 | |
3499 | static int remove_from_super_imsm(struct supertype *st, mdu_disk_info_t *dk) | |
3500 | { | |
3501 | struct intel_super *super = st->sb; | |
3502 | struct dl *dd; | |
3503 | ||
3504 | /* remove from super works only in mdmon - for communication | |
3505 | * manager - monitor. Check if communication memory buffer | |
3506 | * is prepared. | |
3507 | */ | |
3508 | if (!st->update_tail) { | |
3509 | fprintf(stderr, | |
3510 | Name ": %s shall be used in mdmon context only" | |
3511 | "(line %d).\n", __func__, __LINE__); | |
3512 | return 1; | |
3513 | } | |
3514 | dd = malloc(sizeof(*dd)); | |
3515 | if (!dd) { | |
3516 | fprintf(stderr, | |
3517 | Name ": malloc failed %s:%d.\n", __func__, __LINE__); | |
3518 | return 1; | |
3519 | } | |
3520 | memset(dd, 0, sizeof(*dd)); | |
3521 | dd->major = dk->major; | |
3522 | dd->minor = dk->minor; | |
3523 | dd->index = -1; | |
3524 | dd->fd = -1; | |
3525 | dd->disk.status = SPARE_DISK; | |
3526 | dd->action = DISK_REMOVE; | |
3527 | ||
3528 | dd->next = super->disk_mgmt_list; | |
3529 | super->disk_mgmt_list = dd; | |
3530 | ||
3531 | ||
3532 | return 0; | |
3533 | } | |
3534 | ||
f796af5d DW |
3535 | static int store_imsm_mpb(int fd, struct imsm_super *mpb); |
3536 | ||
3537 | static union { | |
3538 | char buf[512]; | |
3539 | struct imsm_super anchor; | |
3540 | } spare_record __attribute__ ((aligned(512))); | |
c2c087e6 | 3541 | |
d23fe947 DW |
3542 | /* spare records have their own family number and do not have any defined raid |
3543 | * devices | |
3544 | */ | |
3545 | static int write_super_imsm_spares(struct intel_super *super, int doclose) | |
3546 | { | |
d23fe947 | 3547 | struct imsm_super *mpb = super->anchor; |
f796af5d | 3548 | struct imsm_super *spare = &spare_record.anchor; |
d23fe947 DW |
3549 | __u32 sum; |
3550 | struct dl *d; | |
3551 | ||
f796af5d DW |
3552 | spare->mpb_size = __cpu_to_le32(sizeof(struct imsm_super)), |
3553 | spare->generation_num = __cpu_to_le32(1UL), | |
3554 | spare->attributes = MPB_ATTRIB_CHECKSUM_VERIFY; | |
3555 | spare->num_disks = 1, | |
3556 | spare->num_raid_devs = 0, | |
3557 | spare->cache_size = mpb->cache_size, | |
3558 | spare->pwr_cycle_count = __cpu_to_le32(1), | |
3559 | ||
3560 | snprintf((char *) spare->sig, MAX_SIGNATURE_LENGTH, | |
3561 | MPB_SIGNATURE MPB_VERSION_RAID0); | |
d23fe947 DW |
3562 | |
3563 | for (d = super->disks; d; d = d->next) { | |
8796fdc4 | 3564 | if (d->index != -1) |
d23fe947 DW |
3565 | continue; |
3566 | ||
f796af5d DW |
3567 | spare->disk[0] = d->disk; |
3568 | sum = __gen_imsm_checksum(spare); | |
3569 | spare->family_num = __cpu_to_le32(sum); | |
3570 | spare->orig_family_num = 0; | |
3571 | sum = __gen_imsm_checksum(spare); | |
3572 | spare->check_sum = __cpu_to_le32(sum); | |
d23fe947 | 3573 | |
f796af5d | 3574 | if (store_imsm_mpb(d->fd, spare)) { |
d23fe947 DW |
3575 | fprintf(stderr, "%s: failed for device %d:%d %s\n", |
3576 | __func__, d->major, d->minor, strerror(errno)); | |
e74255d9 | 3577 | return 1; |
d23fe947 DW |
3578 | } |
3579 | if (doclose) { | |
3580 | close(d->fd); | |
3581 | d->fd = -1; | |
3582 | } | |
3583 | } | |
3584 | ||
e74255d9 | 3585 | return 0; |
d23fe947 DW |
3586 | } |
3587 | ||
36988a3d | 3588 | static int write_super_imsm(struct supertype *st, int doclose) |
cdddbdbc | 3589 | { |
36988a3d | 3590 | struct intel_super *super = st->sb; |
949c47a0 | 3591 | struct imsm_super *mpb = super->anchor; |
c2c087e6 DW |
3592 | struct dl *d; |
3593 | __u32 generation; | |
3594 | __u32 sum; | |
d23fe947 | 3595 | int spares = 0; |
949c47a0 | 3596 | int i; |
a48ac0a8 | 3597 | __u32 mpb_size = sizeof(struct imsm_super) - sizeof(struct imsm_disk); |
36988a3d | 3598 | int num_disks = 0; |
cdddbdbc | 3599 | |
c2c087e6 DW |
3600 | /* 'generation' is incremented everytime the metadata is written */ |
3601 | generation = __le32_to_cpu(mpb->generation_num); | |
3602 | generation++; | |
3603 | mpb->generation_num = __cpu_to_le32(generation); | |
3604 | ||
148acb7b DW |
3605 | /* fix up cases where previous mdadm releases failed to set |
3606 | * orig_family_num | |
3607 | */ | |
3608 | if (mpb->orig_family_num == 0) | |
3609 | mpb->orig_family_num = mpb->family_num; | |
3610 | ||
d23fe947 | 3611 | for (d = super->disks; d; d = d->next) { |
8796fdc4 | 3612 | if (d->index == -1) |
d23fe947 | 3613 | spares++; |
36988a3d | 3614 | else { |
d23fe947 | 3615 | mpb->disk[d->index] = d->disk; |
36988a3d AK |
3616 | num_disks++; |
3617 | } | |
d23fe947 | 3618 | } |
36988a3d | 3619 | for (d = super->missing; d; d = d->next) { |
47ee5a45 | 3620 | mpb->disk[d->index] = d->disk; |
36988a3d AK |
3621 | num_disks++; |
3622 | } | |
3623 | mpb->num_disks = num_disks; | |
3624 | mpb_size += sizeof(struct imsm_disk) * mpb->num_disks; | |
b9f594fe | 3625 | |
949c47a0 DW |
3626 | for (i = 0; i < mpb->num_raid_devs; i++) { |
3627 | struct imsm_dev *dev = __get_imsm_dev(mpb, i); | |
36988a3d AK |
3628 | struct imsm_dev *dev2 = get_imsm_dev(super, i); |
3629 | if (dev && dev2) { | |
3630 | imsm_copy_dev(dev, dev2); | |
3631 | mpb_size += sizeof_imsm_dev(dev, 0); | |
3632 | } | |
949c47a0 | 3633 | } |
a48ac0a8 DW |
3634 | mpb_size += __le32_to_cpu(mpb->bbm_log_size); |
3635 | mpb->mpb_size = __cpu_to_le32(mpb_size); | |
949c47a0 | 3636 | |
c2c087e6 | 3637 | /* recalculate checksum */ |
949c47a0 | 3638 | sum = __gen_imsm_checksum(mpb); |
c2c087e6 DW |
3639 | mpb->check_sum = __cpu_to_le32(sum); |
3640 | ||
d23fe947 | 3641 | /* write the mpb for disks that compose raid devices */ |
c2c087e6 | 3642 | for (d = super->disks; d ; d = d->next) { |
d23fe947 DW |
3643 | if (d->index < 0) |
3644 | continue; | |
f796af5d | 3645 | if (store_imsm_mpb(d->fd, mpb)) |
c2c087e6 DW |
3646 | fprintf(stderr, "%s: failed for device %d:%d %s\n", |
3647 | __func__, d->major, d->minor, strerror(errno)); | |
c2c087e6 DW |
3648 | if (doclose) { |
3649 | close(d->fd); | |
3650 | d->fd = -1; | |
3651 | } | |
3652 | } | |
3653 | ||
d23fe947 DW |
3654 | if (spares) |
3655 | return write_super_imsm_spares(super, doclose); | |
3656 | ||
e74255d9 | 3657 | return 0; |
c2c087e6 DW |
3658 | } |
3659 | ||
0e600426 | 3660 | |
9b1fb677 | 3661 | static int create_array(struct supertype *st, int dev_idx) |
43dad3d6 DW |
3662 | { |
3663 | size_t len; | |
3664 | struct imsm_update_create_array *u; | |
3665 | struct intel_super *super = st->sb; | |
9b1fb677 | 3666 | struct imsm_dev *dev = get_imsm_dev(super, dev_idx); |
54c2c1ea DW |
3667 | struct imsm_map *map = get_imsm_map(dev, 0); |
3668 | struct disk_info *inf; | |
3669 | struct imsm_disk *disk; | |
3670 | int i; | |
43dad3d6 | 3671 | |
54c2c1ea DW |
3672 | len = sizeof(*u) - sizeof(*dev) + sizeof_imsm_dev(dev, 0) + |
3673 | sizeof(*inf) * map->num_members; | |
43dad3d6 DW |
3674 | u = malloc(len); |
3675 | if (!u) { | |
3676 | fprintf(stderr, "%s: failed to allocate update buffer\n", | |
3677 | __func__); | |
3678 | return 1; | |
3679 | } | |
3680 | ||
3681 | u->type = update_create_array; | |
9b1fb677 | 3682 | u->dev_idx = dev_idx; |
43dad3d6 | 3683 | imsm_copy_dev(&u->dev, dev); |
54c2c1ea DW |
3684 | inf = get_disk_info(u); |
3685 | for (i = 0; i < map->num_members; i++) { | |
98130f40 | 3686 | int idx = get_imsm_disk_idx(dev, i, -1); |
9b1fb677 | 3687 | |
54c2c1ea DW |
3688 | disk = get_imsm_disk(super, idx); |
3689 | serialcpy(inf[i].serial, disk->serial); | |
3690 | } | |
43dad3d6 DW |
3691 | append_metadata_update(st, u, len); |
3692 | ||
3693 | return 0; | |
3694 | } | |
3695 | ||
1a64be56 | 3696 | static int mgmt_disk(struct supertype *st) |
43dad3d6 DW |
3697 | { |
3698 | struct intel_super *super = st->sb; | |
3699 | size_t len; | |
1a64be56 | 3700 | struct imsm_update_add_remove_disk *u; |
43dad3d6 | 3701 | |
1a64be56 | 3702 | if (!super->disk_mgmt_list) |
43dad3d6 DW |
3703 | return 0; |
3704 | ||
3705 | len = sizeof(*u); | |
3706 | u = malloc(len); | |
3707 | if (!u) { | |
3708 | fprintf(stderr, "%s: failed to allocate update buffer\n", | |
3709 | __func__); | |
3710 | return 1; | |
3711 | } | |
3712 | ||
1a64be56 | 3713 | u->type = update_add_remove_disk; |
43dad3d6 DW |
3714 | append_metadata_update(st, u, len); |
3715 | ||
3716 | return 0; | |
3717 | } | |
3718 | ||
c2c087e6 DW |
3719 | static int write_init_super_imsm(struct supertype *st) |
3720 | { | |
9b1fb677 DW |
3721 | struct intel_super *super = st->sb; |
3722 | int current_vol = super->current_vol; | |
3723 | ||
3724 | /* we are done with current_vol reset it to point st at the container */ | |
3725 | super->current_vol = -1; | |
3726 | ||
8273f55e | 3727 | if (st->update_tail) { |
43dad3d6 DW |
3728 | /* queue the recently created array / added disk |
3729 | * as a metadata update */ | |
8273f55e | 3730 | struct dl *d; |
43dad3d6 | 3731 | int rv; |
8273f55e | 3732 | |
43dad3d6 | 3733 | /* determine if we are creating a volume or adding a disk */ |
9b1fb677 | 3734 | if (current_vol < 0) { |
1a64be56 LM |
3735 | /* in the mgmt (add/remove) disk case we are running |
3736 | * in mdmon context, so don't close fd's | |
43dad3d6 | 3737 | */ |
1a64be56 | 3738 | return mgmt_disk(st); |
43dad3d6 | 3739 | } else |
9b1fb677 | 3740 | rv = create_array(st, current_vol); |
8273f55e DW |
3741 | |
3742 | for (d = super->disks; d ; d = d->next) { | |
3743 | close(d->fd); | |
3744 | d->fd = -1; | |
3745 | } | |
3746 | ||
43dad3d6 | 3747 | return rv; |
d682f344 N |
3748 | } else { |
3749 | struct dl *d; | |
3750 | for (d = super->disks; d; d = d->next) | |
3751 | Kill(d->devname, NULL, 0, 1, 1); | |
36988a3d | 3752 | return write_super_imsm(st, 1); |
d682f344 | 3753 | } |
cdddbdbc | 3754 | } |
0e600426 | 3755 | #endif |
cdddbdbc | 3756 | |
e683ca88 | 3757 | static int store_super_imsm(struct supertype *st, int fd) |
cdddbdbc | 3758 | { |
e683ca88 DW |
3759 | struct intel_super *super = st->sb; |
3760 | struct imsm_super *mpb = super ? super->anchor : NULL; | |
551c80c1 | 3761 | |
e683ca88 | 3762 | if (!mpb) |
ad97895e DW |
3763 | return 1; |
3764 | ||
1799c9e8 | 3765 | #ifndef MDASSEMBLE |
e683ca88 | 3766 | return store_imsm_mpb(fd, mpb); |
1799c9e8 N |
3767 | #else |
3768 | return 1; | |
3769 | #endif | |
cdddbdbc DW |
3770 | } |
3771 | ||
0e600426 N |
3772 | static int imsm_bbm_log_size(struct imsm_super *mpb) |
3773 | { | |
3774 | return __le32_to_cpu(mpb->bbm_log_size); | |
3775 | } | |
3776 | ||
3777 | #ifndef MDASSEMBLE | |
cdddbdbc DW |
3778 | static int validate_geometry_imsm_container(struct supertype *st, int level, |
3779 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 3780 | unsigned long long size, char *dev, |
2c514b71 NB |
3781 | unsigned long long *freesize, |
3782 | int verbose) | |
cdddbdbc | 3783 | { |
c2c087e6 DW |
3784 | int fd; |
3785 | unsigned long long ldsize; | |
88c32bb1 | 3786 | const struct imsm_orom *orom; |
cdddbdbc | 3787 | |
c2c087e6 DW |
3788 | if (level != LEVEL_CONTAINER) |
3789 | return 0; | |
3790 | if (!dev) | |
3791 | return 1; | |
3792 | ||
88c32bb1 DW |
3793 | if (check_env("IMSM_NO_PLATFORM")) |
3794 | orom = NULL; | |
3795 | else | |
3796 | orom = find_imsm_orom(); | |
3797 | if (orom && raiddisks > orom->tds) { | |
3798 | if (verbose) | |
3799 | fprintf(stderr, Name ": %d exceeds maximum number of" | |
3800 | " platform supported disks: %d\n", | |
3801 | raiddisks, orom->tds); | |
3802 | return 0; | |
3803 | } | |
3804 | ||
c2c087e6 DW |
3805 | fd = open(dev, O_RDONLY|O_EXCL, 0); |
3806 | if (fd < 0) { | |
2c514b71 NB |
3807 | if (verbose) |
3808 | fprintf(stderr, Name ": imsm: Cannot open %s: %s\n", | |
3809 | dev, strerror(errno)); | |
c2c087e6 DW |
3810 | return 0; |
3811 | } | |
3812 | if (!get_dev_size(fd, dev, &ldsize)) { | |
3813 | close(fd); | |
3814 | return 0; | |
3815 | } | |
3816 | close(fd); | |
3817 | ||
3818 | *freesize = avail_size_imsm(st, ldsize >> 9); | |
3819 | ||
3820 | return 1; | |
cdddbdbc DW |
3821 | } |
3822 | ||
0dcecb2e DW |
3823 | static unsigned long long find_size(struct extent *e, int *idx, int num_extents) |
3824 | { | |
3825 | const unsigned long long base_start = e[*idx].start; | |
3826 | unsigned long long end = base_start + e[*idx].size; | |
3827 | int i; | |
3828 | ||
3829 | if (base_start == end) | |
3830 | return 0; | |
3831 | ||
3832 | *idx = *idx + 1; | |
3833 | for (i = *idx; i < num_extents; i++) { | |
3834 | /* extend overlapping extents */ | |
3835 | if (e[i].start >= base_start && | |
3836 | e[i].start <= end) { | |
3837 | if (e[i].size == 0) | |
3838 | return 0; | |
3839 | if (e[i].start + e[i].size > end) | |
3840 | end = e[i].start + e[i].size; | |
3841 | } else if (e[i].start > end) { | |
3842 | *idx = i; | |
3843 | break; | |
3844 | } | |
3845 | } | |
3846 | ||
3847 | return end - base_start; | |
3848 | } | |
3849 | ||
3850 | static unsigned long long merge_extents(struct intel_super *super, int sum_extents) | |
3851 | { | |
3852 | /* build a composite disk with all known extents and generate a new | |
3853 | * 'maxsize' given the "all disks in an array must share a common start | |
3854 | * offset" constraint | |
3855 | */ | |
3856 | struct extent *e = calloc(sum_extents, sizeof(*e)); | |
3857 | struct dl *dl; | |
3858 | int i, j; | |
3859 | int start_extent; | |
3860 | unsigned long long pos; | |
b9d77223 | 3861 | unsigned long long start = 0; |
0dcecb2e DW |
3862 | unsigned long long maxsize; |
3863 | unsigned long reserve; | |
3864 | ||
3865 | if (!e) | |
a7dd165b | 3866 | return 0; |
0dcecb2e DW |
3867 | |
3868 | /* coalesce and sort all extents. also, check to see if we need to | |
3869 | * reserve space between member arrays | |
3870 | */ | |
3871 | j = 0; | |
3872 | for (dl = super->disks; dl; dl = dl->next) { | |
3873 | if (!dl->e) | |
3874 | continue; | |
3875 | for (i = 0; i < dl->extent_cnt; i++) | |
3876 | e[j++] = dl->e[i]; | |
3877 | } | |
3878 | qsort(e, sum_extents, sizeof(*e), cmp_extent); | |
3879 | ||
3880 | /* merge extents */ | |
3881 | i = 0; | |
3882 | j = 0; | |
3883 | while (i < sum_extents) { | |
3884 | e[j].start = e[i].start; | |
3885 | e[j].size = find_size(e, &i, sum_extents); | |
3886 | j++; | |
3887 | if (e[j-1].size == 0) | |
3888 | break; | |
3889 | } | |
3890 | ||
3891 | pos = 0; | |
3892 | maxsize = 0; | |
3893 | start_extent = 0; | |
3894 | i = 0; | |
3895 | do { | |
3896 | unsigned long long esize; | |
3897 | ||
3898 | esize = e[i].start - pos; | |
3899 | if (esize >= maxsize) { | |
3900 | maxsize = esize; | |
3901 | start = pos; | |
3902 | start_extent = i; | |
3903 | } | |
3904 | pos = e[i].start + e[i].size; | |
3905 | i++; | |
3906 | } while (e[i-1].size); | |
3907 | free(e); | |
3908 | ||
a7dd165b DW |
3909 | if (maxsize == 0) |
3910 | return 0; | |
3911 | ||
3912 | /* FIXME assumes volume at offset 0 is the first volume in a | |
3913 | * container | |
3914 | */ | |
0dcecb2e DW |
3915 | if (start_extent > 0) |
3916 | reserve = IMSM_RESERVED_SECTORS; /* gap between raid regions */ | |
3917 | else | |
3918 | reserve = 0; | |
3919 | ||
3920 | if (maxsize < reserve) | |
a7dd165b | 3921 | return 0; |
0dcecb2e DW |
3922 | |
3923 | super->create_offset = ~((__u32) 0); | |
3924 | if (start + reserve > super->create_offset) | |
a7dd165b | 3925 | return 0; /* start overflows create_offset */ |
0dcecb2e DW |
3926 | super->create_offset = start + reserve; |
3927 | ||
3928 | return maxsize - reserve; | |
3929 | } | |
3930 | ||
88c32bb1 DW |
3931 | static int is_raid_level_supported(const struct imsm_orom *orom, int level, int raiddisks) |
3932 | { | |
3933 | if (level < 0 || level == 6 || level == 4) | |
3934 | return 0; | |
3935 | ||
3936 | /* if we have an orom prevent invalid raid levels */ | |
3937 | if (orom) | |
3938 | switch (level) { | |
3939 | case 0: return imsm_orom_has_raid0(orom); | |
3940 | case 1: | |
3941 | if (raiddisks > 2) | |
3942 | return imsm_orom_has_raid1e(orom); | |
1c556e92 DW |
3943 | return imsm_orom_has_raid1(orom) && raiddisks == 2; |
3944 | case 10: return imsm_orom_has_raid10(orom) && raiddisks == 4; | |
3945 | case 5: return imsm_orom_has_raid5(orom) && raiddisks > 2; | |
88c32bb1 DW |
3946 | } |
3947 | else | |
3948 | return 1; /* not on an Intel RAID platform so anything goes */ | |
3949 | ||
3950 | return 0; | |
3951 | } | |
3952 | ||
35f81cbb | 3953 | #define pr_vrb(fmt, arg...) (void) (verbose && fprintf(stderr, Name fmt, ##arg)) |
6592ce37 DW |
3954 | static int |
3955 | validate_geometry_imsm_orom(struct intel_super *super, int level, int layout, | |
3956 | int raiddisks, int chunk, int verbose) | |
3957 | { | |
3958 | if (!is_raid_level_supported(super->orom, level, raiddisks)) { | |
3959 | pr_vrb(": platform does not support raid%d with %d disk%s\n", | |
3960 | level, raiddisks, raiddisks > 1 ? "s" : ""); | |
3961 | return 0; | |
3962 | } | |
3963 | if (super->orom && level != 1 && | |
3964 | !imsm_orom_has_chunk(super->orom, chunk)) { | |
3965 | pr_vrb(": platform does not support a chunk size of: %d\n", chunk); | |
3966 | return 0; | |
3967 | } | |
3968 | if (layout != imsm_level_to_layout(level)) { | |
3969 | if (level == 5) | |
3970 | pr_vrb(": imsm raid 5 only supports the left-asymmetric layout\n"); | |
3971 | else if (level == 10) | |
3972 | pr_vrb(": imsm raid 10 only supports the n2 layout\n"); | |
3973 | else | |
3974 | pr_vrb(": imsm unknown layout %#x for this raid level %d\n", | |
3975 | layout, level); | |
3976 | return 0; | |
3977 | } | |
3978 | ||
3979 | return 1; | |
3980 | } | |
3981 | ||
c2c087e6 DW |
3982 | /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd |
3983 | * FIX ME add ahci details | |
3984 | */ | |
8b353278 DW |
3985 | static int validate_geometry_imsm_volume(struct supertype *st, int level, |
3986 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 3987 | unsigned long long size, char *dev, |
2c514b71 NB |
3988 | unsigned long long *freesize, |
3989 | int verbose) | |
cdddbdbc | 3990 | { |
c2c087e6 DW |
3991 | struct stat stb; |
3992 | struct intel_super *super = st->sb; | |
a20d2ba5 | 3993 | struct imsm_super *mpb = super->anchor; |
c2c087e6 DW |
3994 | struct dl *dl; |
3995 | unsigned long long pos = 0; | |
3996 | unsigned long long maxsize; | |
3997 | struct extent *e; | |
3998 | int i; | |
cdddbdbc | 3999 | |
88c32bb1 DW |
4000 | /* We must have the container info already read in. */ |
4001 | if (!super) | |
c2c087e6 DW |
4002 | return 0; |
4003 | ||
6592ce37 | 4004 | if (!validate_geometry_imsm_orom(super, level, layout, raiddisks, chunk, verbose)) |
c2c087e6 | 4005 | return 0; |
c2c087e6 DW |
4006 | |
4007 | if (!dev) { | |
4008 | /* General test: make sure there is space for | |
2da8544a DW |
4009 | * 'raiddisks' device extents of size 'size' at a given |
4010 | * offset | |
c2c087e6 | 4011 | */ |
e46273eb | 4012 | unsigned long long minsize = size; |
b7528a20 | 4013 | unsigned long long start_offset = MaxSector; |
c2c087e6 DW |
4014 | int dcnt = 0; |
4015 | if (minsize == 0) | |
4016 | minsize = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
4017 | for (dl = super->disks; dl ; dl = dl->next) { | |
4018 | int found = 0; | |
4019 | ||
bf5a934a | 4020 | pos = 0; |
c2c087e6 DW |
4021 | i = 0; |
4022 | e = get_extents(super, dl); | |
4023 | if (!e) continue; | |
4024 | do { | |
4025 | unsigned long long esize; | |
4026 | esize = e[i].start - pos; | |
4027 | if (esize >= minsize) | |
4028 | found = 1; | |
b7528a20 | 4029 | if (found && start_offset == MaxSector) { |
2da8544a DW |
4030 | start_offset = pos; |
4031 | break; | |
4032 | } else if (found && pos != start_offset) { | |
4033 | found = 0; | |
4034 | break; | |
4035 | } | |
c2c087e6 DW |
4036 | pos = e[i].start + e[i].size; |
4037 | i++; | |
4038 | } while (e[i-1].size); | |
4039 | if (found) | |
4040 | dcnt++; | |
4041 | free(e); | |
4042 | } | |
4043 | if (dcnt < raiddisks) { | |
2c514b71 NB |
4044 | if (verbose) |
4045 | fprintf(stderr, Name ": imsm: Not enough " | |
4046 | "devices with space for this array " | |
4047 | "(%d < %d)\n", | |
4048 | dcnt, raiddisks); | |
c2c087e6 DW |
4049 | return 0; |
4050 | } | |
4051 | return 1; | |
4052 | } | |
0dcecb2e | 4053 | |
c2c087e6 DW |
4054 | /* This device must be a member of the set */ |
4055 | if (stat(dev, &stb) < 0) | |
4056 | return 0; | |
4057 | if ((S_IFMT & stb.st_mode) != S_IFBLK) | |
4058 | return 0; | |
4059 | for (dl = super->disks ; dl ; dl = dl->next) { | |
f21e18ca N |
4060 | if (dl->major == (int)major(stb.st_rdev) && |
4061 | dl->minor == (int)minor(stb.st_rdev)) | |
c2c087e6 DW |
4062 | break; |
4063 | } | |
4064 | if (!dl) { | |
2c514b71 NB |
4065 | if (verbose) |
4066 | fprintf(stderr, Name ": %s is not in the " | |
4067 | "same imsm set\n", dev); | |
c2c087e6 | 4068 | return 0; |
a20d2ba5 DW |
4069 | } else if (super->orom && dl->index < 0 && mpb->num_raid_devs) { |
4070 | /* If a volume is present then the current creation attempt | |
4071 | * cannot incorporate new spares because the orom may not | |
4072 | * understand this configuration (all member disks must be | |
4073 | * members of each array in the container). | |
4074 | */ | |
4075 | fprintf(stderr, Name ": %s is a spare and a volume" | |
4076 | " is already defined for this container\n", dev); | |
4077 | fprintf(stderr, Name ": The option-rom requires all member" | |
4078 | " disks to be a member of all volumes\n"); | |
4079 | return 0; | |
c2c087e6 | 4080 | } |
0dcecb2e DW |
4081 | |
4082 | /* retrieve the largest free space block */ | |
c2c087e6 DW |
4083 | e = get_extents(super, dl); |
4084 | maxsize = 0; | |
4085 | i = 0; | |
0dcecb2e DW |
4086 | if (e) { |
4087 | do { | |
4088 | unsigned long long esize; | |
4089 | ||
4090 | esize = e[i].start - pos; | |
4091 | if (esize >= maxsize) | |
4092 | maxsize = esize; | |
4093 | pos = e[i].start + e[i].size; | |
4094 | i++; | |
4095 | } while (e[i-1].size); | |
4096 | dl->e = e; | |
4097 | dl->extent_cnt = i; | |
4098 | } else { | |
4099 | if (verbose) | |
4100 | fprintf(stderr, Name ": unable to determine free space for: %s\n", | |
4101 | dev); | |
4102 | return 0; | |
4103 | } | |
4104 | if (maxsize < size) { | |
4105 | if (verbose) | |
4106 | fprintf(stderr, Name ": %s not enough space (%llu < %llu)\n", | |
4107 | dev, maxsize, size); | |
4108 | return 0; | |
4109 | } | |
4110 | ||
4111 | /* count total number of extents for merge */ | |
4112 | i = 0; | |
4113 | for (dl = super->disks; dl; dl = dl->next) | |
4114 | if (dl->e) | |
4115 | i += dl->extent_cnt; | |
4116 | ||
4117 | maxsize = merge_extents(super, i); | |
a7dd165b | 4118 | if (maxsize < size || maxsize == 0) { |
0dcecb2e DW |
4119 | if (verbose) |
4120 | fprintf(stderr, Name ": not enough space after merge (%llu < %llu)\n", | |
4121 | maxsize, size); | |
4122 | return 0; | |
0dcecb2e DW |
4123 | } |
4124 | ||
c2c087e6 DW |
4125 | *freesize = maxsize; |
4126 | ||
4127 | return 1; | |
cdddbdbc DW |
4128 | } |
4129 | ||
efb30e7f DW |
4130 | static int reserve_space(struct supertype *st, int raiddisks, |
4131 | unsigned long long size, int chunk, | |
4132 | unsigned long long *freesize) | |
4133 | { | |
4134 | struct intel_super *super = st->sb; | |
4135 | struct imsm_super *mpb = super->anchor; | |
4136 | struct dl *dl; | |
4137 | int i; | |
4138 | int extent_cnt; | |
4139 | struct extent *e; | |
4140 | unsigned long long maxsize; | |
4141 | unsigned long long minsize; | |
4142 | int cnt; | |
4143 | int used; | |
4144 | ||
4145 | /* find the largest common start free region of the possible disks */ | |
4146 | used = 0; | |
4147 | extent_cnt = 0; | |
4148 | cnt = 0; | |
4149 | for (dl = super->disks; dl; dl = dl->next) { | |
4150 | dl->raiddisk = -1; | |
4151 | ||
4152 | if (dl->index >= 0) | |
4153 | used++; | |
4154 | ||
4155 | /* don't activate new spares if we are orom constrained | |
4156 | * and there is already a volume active in the container | |
4157 | */ | |
4158 | if (super->orom && dl->index < 0 && mpb->num_raid_devs) | |
4159 | continue; | |
4160 | ||
4161 | e = get_extents(super, dl); | |
4162 | if (!e) | |
4163 | continue; | |
4164 | for (i = 1; e[i-1].size; i++) | |
4165 | ; | |
4166 | dl->e = e; | |
4167 | dl->extent_cnt = i; | |
4168 | extent_cnt += i; | |
4169 | cnt++; | |
4170 | } | |
4171 | ||
4172 | maxsize = merge_extents(super, extent_cnt); | |
4173 | minsize = size; | |
4174 | if (size == 0) | |
4175 | minsize = chunk; | |
4176 | ||
4177 | if (cnt < raiddisks || | |
4178 | (super->orom && used && used != raiddisks) || | |
a7dd165b DW |
4179 | maxsize < minsize || |
4180 | maxsize == 0) { | |
efb30e7f DW |
4181 | fprintf(stderr, Name ": not enough devices with space to create array.\n"); |
4182 | return 0; /* No enough free spaces large enough */ | |
4183 | } | |
4184 | ||
4185 | if (size == 0) { | |
4186 | size = maxsize; | |
4187 | if (chunk) { | |
4188 | size /= chunk; | |
4189 | size *= chunk; | |
4190 | } | |
4191 | } | |
4192 | ||
4193 | cnt = 0; | |
4194 | for (dl = super->disks; dl; dl = dl->next) | |
4195 | if (dl->e) | |
4196 | dl->raiddisk = cnt++; | |
4197 | ||
4198 | *freesize = size; | |
4199 | ||
4200 | return 1; | |
4201 | } | |
4202 | ||
bf5a934a DW |
4203 | static int validate_geometry_imsm(struct supertype *st, int level, int layout, |
4204 | int raiddisks, int chunk, unsigned long long size, | |
4205 | char *dev, unsigned long long *freesize, | |
4206 | int verbose) | |
4207 | { | |
4208 | int fd, cfd; | |
4209 | struct mdinfo *sra; | |
20cbe8d2 | 4210 | int is_member = 0; |
bf5a934a DW |
4211 | |
4212 | /* if given unused devices create a container | |
4213 | * if given given devices in a container create a member volume | |
4214 | */ | |
4215 | if (level == LEVEL_CONTAINER) { | |
4216 | /* Must be a fresh device to add to a container */ | |
4217 | return validate_geometry_imsm_container(st, level, layout, | |
4218 | raiddisks, chunk, size, | |
4219 | dev, freesize, | |
4220 | verbose); | |
4221 | } | |
4222 | ||
8592f29d N |
4223 | if (!dev) { |
4224 | if (st->sb && freesize) { | |
efb30e7f DW |
4225 | /* we are being asked to automatically layout a |
4226 | * new volume based on the current contents of | |
4227 | * the container. If the the parameters can be | |
4228 | * satisfied reserve_space will record the disks, | |
4229 | * start offset, and size of the volume to be | |
4230 | * created. add_to_super and getinfo_super | |
4231 | * detect when autolayout is in progress. | |
4232 | */ | |
6592ce37 DW |
4233 | if (!validate_geometry_imsm_orom(st->sb, level, layout, |
4234 | raiddisks, chunk, | |
4235 | verbose)) | |
4236 | return 0; | |
efb30e7f | 4237 | return reserve_space(st, raiddisks, size, chunk, freesize); |
8592f29d N |
4238 | } |
4239 | return 1; | |
4240 | } | |
bf5a934a DW |
4241 | if (st->sb) { |
4242 | /* creating in a given container */ | |
4243 | return validate_geometry_imsm_volume(st, level, layout, | |
4244 | raiddisks, chunk, size, | |
4245 | dev, freesize, verbose); | |
4246 | } | |
4247 | ||
bf5a934a DW |
4248 | /* This device needs to be a device in an 'imsm' container */ |
4249 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
4250 | if (fd >= 0) { | |
4251 | if (verbose) | |
4252 | fprintf(stderr, | |
4253 | Name ": Cannot create this array on device %s\n", | |
4254 | dev); | |
4255 | close(fd); | |
4256 | return 0; | |
4257 | } | |
4258 | if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) { | |
4259 | if (verbose) | |
4260 | fprintf(stderr, Name ": Cannot open %s: %s\n", | |
4261 | dev, strerror(errno)); | |
4262 | return 0; | |
4263 | } | |
4264 | /* Well, it is in use by someone, maybe an 'imsm' container. */ | |
4265 | cfd = open_container(fd); | |
20cbe8d2 | 4266 | close(fd); |
bf5a934a | 4267 | if (cfd < 0) { |
bf5a934a DW |
4268 | if (verbose) |
4269 | fprintf(stderr, Name ": Cannot use %s: It is busy\n", | |
4270 | dev); | |
4271 | return 0; | |
4272 | } | |
4273 | sra = sysfs_read(cfd, 0, GET_VERSION); | |
bf5a934a | 4274 | if (sra && sra->array.major_version == -1 && |
20cbe8d2 AW |
4275 | strcmp(sra->text_version, "imsm") == 0) |
4276 | is_member = 1; | |
4277 | sysfs_free(sra); | |
4278 | if (is_member) { | |
bf5a934a DW |
4279 | /* This is a member of a imsm container. Load the container |
4280 | * and try to create a volume | |
4281 | */ | |
4282 | struct intel_super *super; | |
4283 | ||
e1902a7b | 4284 | if (load_super_imsm_all(st, cfd, (void **) &super, NULL) == 0) { |
bf5a934a DW |
4285 | st->sb = super; |
4286 | st->container_dev = fd2devnum(cfd); | |
4287 | close(cfd); | |
4288 | return validate_geometry_imsm_volume(st, level, layout, | |
4289 | raiddisks, chunk, | |
4290 | size, dev, | |
4291 | freesize, verbose); | |
4292 | } | |
20cbe8d2 | 4293 | } |
bf5a934a | 4294 | |
20cbe8d2 AW |
4295 | if (verbose) |
4296 | fprintf(stderr, Name ": failed container membership check\n"); | |
4297 | ||
4298 | close(cfd); | |
4299 | return 0; | |
bf5a934a | 4300 | } |
0bd16cf2 | 4301 | |
30f58b22 | 4302 | static void default_geometry_imsm(struct supertype *st, int *level, int *layout, int *chunk) |
0bd16cf2 DJ |
4303 | { |
4304 | struct intel_super *super = st->sb; | |
4305 | ||
30f58b22 DW |
4306 | if (level && *level == UnSet) |
4307 | *level = LEVEL_CONTAINER; | |
4308 | ||
4309 | if (level && layout && *layout == UnSet) | |
4310 | *layout = imsm_level_to_layout(*level); | |
0bd16cf2 | 4311 | |
1d54f286 N |
4312 | if (chunk && (*chunk == UnSet || *chunk == 0) && |
4313 | super && super->orom) | |
30f58b22 | 4314 | *chunk = imsm_orom_default_chunk(super->orom); |
0bd16cf2 DJ |
4315 | } |
4316 | ||
33414a01 DW |
4317 | static void handle_missing(struct intel_super *super, struct imsm_dev *dev); |
4318 | ||
4319 | static int kill_subarray_imsm(struct supertype *st) | |
4320 | { | |
4321 | /* remove the subarray currently referenced by ->current_vol */ | |
4322 | __u8 i; | |
4323 | struct intel_dev **dp; | |
4324 | struct intel_super *super = st->sb; | |
4325 | __u8 current_vol = super->current_vol; | |
4326 | struct imsm_super *mpb = super->anchor; | |
4327 | ||
4328 | if (super->current_vol < 0) | |
4329 | return 2; | |
4330 | super->current_vol = -1; /* invalidate subarray cursor */ | |
4331 | ||
4332 | /* block deletions that would change the uuid of active subarrays | |
4333 | * | |
4334 | * FIXME when immutable ids are available, but note that we'll | |
4335 | * also need to fixup the invalidated/active subarray indexes in | |
4336 | * mdstat | |
4337 | */ | |
4338 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
4339 | char subarray[4]; | |
4340 | ||
4341 | if (i < current_vol) | |
4342 | continue; | |
4343 | sprintf(subarray, "%u", i); | |
4344 | if (is_subarray_active(subarray, st->devname)) { | |
4345 | fprintf(stderr, | |
4346 | Name ": deleting subarray-%d would change the UUID of active subarray-%d, aborting\n", | |
4347 | current_vol, i); | |
4348 | ||
4349 | return 2; | |
4350 | } | |
4351 | } | |
4352 | ||
4353 | if (st->update_tail) { | |
4354 | struct imsm_update_kill_array *u = malloc(sizeof(*u)); | |
4355 | ||
4356 | if (!u) | |
4357 | return 2; | |
4358 | u->type = update_kill_array; | |
4359 | u->dev_idx = current_vol; | |
4360 | append_metadata_update(st, u, sizeof(*u)); | |
4361 | ||
4362 | return 0; | |
4363 | } | |
4364 | ||
4365 | for (dp = &super->devlist; *dp;) | |
4366 | if ((*dp)->index == current_vol) { | |
4367 | *dp = (*dp)->next; | |
4368 | } else { | |
4369 | handle_missing(super, (*dp)->dev); | |
4370 | if ((*dp)->index > current_vol) | |
4371 | (*dp)->index--; | |
4372 | dp = &(*dp)->next; | |
4373 | } | |
4374 | ||
4375 | /* no more raid devices, all active components are now spares, | |
4376 | * but of course failed are still failed | |
4377 | */ | |
4378 | if (--mpb->num_raid_devs == 0) { | |
4379 | struct dl *d; | |
4380 | ||
4381 | for (d = super->disks; d; d = d->next) | |
4382 | if (d->index > -2) { | |
4383 | d->index = -1; | |
4384 | d->disk.status = SPARE_DISK; | |
4385 | } | |
4386 | } | |
4387 | ||
4388 | super->updates_pending++; | |
4389 | ||
4390 | return 0; | |
4391 | } | |
aa534678 | 4392 | |
a951a4f7 | 4393 | static int update_subarray_imsm(struct supertype *st, char *subarray, |
fa56eddb | 4394 | char *update, struct mddev_ident *ident) |
aa534678 DW |
4395 | { |
4396 | /* update the subarray currently referenced by ->current_vol */ | |
4397 | struct intel_super *super = st->sb; | |
4398 | struct imsm_super *mpb = super->anchor; | |
4399 | ||
aa534678 DW |
4400 | if (strcmp(update, "name") == 0) { |
4401 | char *name = ident->name; | |
a951a4f7 N |
4402 | char *ep; |
4403 | int vol; | |
aa534678 | 4404 | |
a951a4f7 | 4405 | if (is_subarray_active(subarray, st->devname)) { |
aa534678 DW |
4406 | fprintf(stderr, |
4407 | Name ": Unable to update name of active subarray\n"); | |
4408 | return 2; | |
4409 | } | |
4410 | ||
4411 | if (!check_name(super, name, 0)) | |
4412 | return 2; | |
4413 | ||
a951a4f7 N |
4414 | vol = strtoul(subarray, &ep, 10); |
4415 | if (*ep != '\0' || vol >= super->anchor->num_raid_devs) | |
4416 | return 2; | |
4417 | ||
aa534678 DW |
4418 | if (st->update_tail) { |
4419 | struct imsm_update_rename_array *u = malloc(sizeof(*u)); | |
4420 | ||
4421 | if (!u) | |
4422 | return 2; | |
4423 | u->type = update_rename_array; | |
a951a4f7 | 4424 | u->dev_idx = vol; |
aa534678 DW |
4425 | snprintf((char *) u->name, MAX_RAID_SERIAL_LEN, "%s", name); |
4426 | append_metadata_update(st, u, sizeof(*u)); | |
4427 | } else { | |
4428 | struct imsm_dev *dev; | |
4429 | int i; | |
4430 | ||
a951a4f7 | 4431 | dev = get_imsm_dev(super, vol); |
aa534678 DW |
4432 | snprintf((char *) dev->volume, MAX_RAID_SERIAL_LEN, "%s", name); |
4433 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
4434 | dev = get_imsm_dev(super, i); | |
4435 | handle_missing(super, dev); | |
4436 | } | |
4437 | super->updates_pending++; | |
4438 | } | |
4439 | } else | |
4440 | return 2; | |
4441 | ||
4442 | return 0; | |
4443 | } | |
0e600426 | 4444 | #endif /* MDASSEMBLE */ |
bf5a934a | 4445 | |
28bce06f AK |
4446 | static int is_gen_migration(struct imsm_dev *dev) |
4447 | { | |
4448 | if (!dev->vol.migr_state) | |
4449 | return 0; | |
4450 | ||
4451 | if (migr_type(dev) == MIGR_GEN_MIGR) | |
4452 | return 1; | |
4453 | ||
4454 | return 0; | |
4455 | } | |
4456 | ||
1e5c6983 DW |
4457 | static int is_rebuilding(struct imsm_dev *dev) |
4458 | { | |
4459 | struct imsm_map *migr_map; | |
4460 | ||
4461 | if (!dev->vol.migr_state) | |
4462 | return 0; | |
4463 | ||
4464 | if (migr_type(dev) != MIGR_REBUILD) | |
4465 | return 0; | |
4466 | ||
4467 | migr_map = get_imsm_map(dev, 1); | |
4468 | ||
4469 | if (migr_map->map_state == IMSM_T_STATE_DEGRADED) | |
4470 | return 1; | |
4471 | else | |
4472 | return 0; | |
4473 | } | |
4474 | ||
4475 | static void update_recovery_start(struct imsm_dev *dev, struct mdinfo *array) | |
4476 | { | |
4477 | struct mdinfo *rebuild = NULL; | |
4478 | struct mdinfo *d; | |
4479 | __u32 units; | |
4480 | ||
4481 | if (!is_rebuilding(dev)) | |
4482 | return; | |
4483 | ||
4484 | /* Find the rebuild target, but punt on the dual rebuild case */ | |
4485 | for (d = array->devs; d; d = d->next) | |
4486 | if (d->recovery_start == 0) { | |
4487 | if (rebuild) | |
4488 | return; | |
4489 | rebuild = d; | |
4490 | } | |
4491 | ||
4363fd80 DW |
4492 | if (!rebuild) { |
4493 | /* (?) none of the disks are marked with | |
4494 | * IMSM_ORD_REBUILD, so assume they are missing and the | |
4495 | * disk_ord_tbl was not correctly updated | |
4496 | */ | |
4497 | dprintf("%s: failed to locate out-of-sync disk\n", __func__); | |
4498 | return; | |
4499 | } | |
4500 | ||
1e5c6983 DW |
4501 | units = __le32_to_cpu(dev->vol.curr_migr_unit); |
4502 | rebuild->recovery_start = units * blocks_per_migr_unit(dev); | |
4503 | } | |
4504 | ||
4505 | ||
00bbdbda | 4506 | static struct mdinfo *container_content_imsm(struct supertype *st, char *subarray) |
cdddbdbc | 4507 | { |
4f5bc454 DW |
4508 | /* Given a container loaded by load_super_imsm_all, |
4509 | * extract information about all the arrays into | |
4510 | * an mdinfo tree. | |
00bbdbda | 4511 | * If 'subarray' is given, just extract info about that array. |
4f5bc454 DW |
4512 | * |
4513 | * For each imsm_dev create an mdinfo, fill it in, | |
4514 | * then look for matching devices in super->disks | |
4515 | * and create appropriate device mdinfo. | |
4516 | */ | |
4517 | struct intel_super *super = st->sb; | |
949c47a0 | 4518 | struct imsm_super *mpb = super->anchor; |
4f5bc454 | 4519 | struct mdinfo *rest = NULL; |
00bbdbda | 4520 | unsigned int i; |
a06d022d | 4521 | int bbm_errors = 0; |
cdddbdbc | 4522 | |
a06d022d KW |
4523 | /* check for bad blocks */ |
4524 | if (imsm_bbm_log_size(super->anchor)) | |
4525 | bbm_errors = 1; | |
604b746f | 4526 | |
4f5bc454 | 4527 | for (i = 0; i < mpb->num_raid_devs; i++) { |
00bbdbda N |
4528 | struct imsm_dev *dev; |
4529 | struct imsm_map *map; | |
4f5bc454 | 4530 | struct mdinfo *this; |
4f5bc454 | 4531 | int slot; |
00bbdbda N |
4532 | char *ep; |
4533 | ||
4534 | if (subarray && | |
4535 | (i != strtoul(subarray, &ep, 10) || *ep != '\0')) | |
4536 | continue; | |
4537 | ||
4538 | dev = get_imsm_dev(super, i); | |
4539 | map = get_imsm_map(dev, 0); | |
4f5bc454 | 4540 | |
1ce0101c DW |
4541 | /* do not publish arrays that are in the middle of an |
4542 | * unsupported migration | |
4543 | */ | |
4544 | if (dev->vol.migr_state && | |
28bce06f | 4545 | (migr_type(dev) == MIGR_STATE_CHANGE)) { |
1ce0101c DW |
4546 | fprintf(stderr, Name ": cannot assemble volume '%.16s':" |
4547 | " unsupported migration in progress\n", | |
4548 | dev->volume); | |
4549 | continue; | |
4550 | } | |
4551 | ||
4f5bc454 | 4552 | this = malloc(sizeof(*this)); |
0fbd635c | 4553 | if (!this) { |
cf1be220 | 4554 | fprintf(stderr, Name ": failed to allocate %zu bytes\n", |
0fbd635c AW |
4555 | sizeof(*this)); |
4556 | break; | |
4557 | } | |
4f5bc454 DW |
4558 | memset(this, 0, sizeof(*this)); |
4559 | this->next = rest; | |
4f5bc454 | 4560 | |
301406c9 | 4561 | super->current_vol = i; |
a5d85af7 | 4562 | getinfo_super_imsm_volume(st, this, NULL); |
4f5bc454 | 4563 | for (slot = 0 ; slot < map->num_members; slot++) { |
1e5c6983 | 4564 | unsigned long long recovery_start; |
4f5bc454 DW |
4565 | struct mdinfo *info_d; |
4566 | struct dl *d; | |
4567 | int idx; | |
9a1608e5 | 4568 | int skip; |
7eef0453 | 4569 | __u32 ord; |
4f5bc454 | 4570 | |
9a1608e5 | 4571 | skip = 0; |
98130f40 AK |
4572 | idx = get_imsm_disk_idx(dev, slot, 0); |
4573 | ord = get_imsm_ord_tbl_ent(dev, slot, 0); | |
4f5bc454 DW |
4574 | for (d = super->disks; d ; d = d->next) |
4575 | if (d->index == idx) | |
0fbd635c | 4576 | break; |
4f5bc454 | 4577 | |
1e5c6983 | 4578 | recovery_start = MaxSector; |
4f5bc454 | 4579 | if (d == NULL) |
9a1608e5 | 4580 | skip = 1; |
25ed7e59 | 4581 | if (d && is_failed(&d->disk)) |
9a1608e5 | 4582 | skip = 1; |
7eef0453 | 4583 | if (ord & IMSM_ORD_REBUILD) |
1e5c6983 | 4584 | recovery_start = 0; |
9a1608e5 DW |
4585 | |
4586 | /* | |
4587 | * if we skip some disks the array will be assmebled degraded; | |
1e5c6983 DW |
4588 | * reset resync start to avoid a dirty-degraded |
4589 | * situation when performing the intial sync | |
9a1608e5 DW |
4590 | * |
4591 | * FIXME handle dirty degraded | |
4592 | */ | |
1e5c6983 | 4593 | if ((skip || recovery_start == 0) && !dev->vol.dirty) |
b7528a20 | 4594 | this->resync_start = MaxSector; |
9a1608e5 DW |
4595 | if (skip) |
4596 | continue; | |
4f5bc454 | 4597 | |
1e5c6983 | 4598 | info_d = calloc(1, sizeof(*info_d)); |
9a1608e5 DW |
4599 | if (!info_d) { |
4600 | fprintf(stderr, Name ": failed to allocate disk" | |
1ce0101c | 4601 | " for volume %.16s\n", dev->volume); |
1e5c6983 DW |
4602 | info_d = this->devs; |
4603 | while (info_d) { | |
4604 | struct mdinfo *d = info_d->next; | |
4605 | ||
4606 | free(info_d); | |
4607 | info_d = d; | |
4608 | } | |
9a1608e5 DW |
4609 | free(this); |
4610 | this = rest; | |
4611 | break; | |
4612 | } | |
4f5bc454 DW |
4613 | info_d->next = this->devs; |
4614 | this->devs = info_d; | |
4615 | ||
4f5bc454 DW |
4616 | info_d->disk.number = d->index; |
4617 | info_d->disk.major = d->major; | |
4618 | info_d->disk.minor = d->minor; | |
4619 | info_d->disk.raid_disk = slot; | |
1e5c6983 | 4620 | info_d->recovery_start = recovery_start; |
4f5bc454 | 4621 | |
1e5c6983 DW |
4622 | if (info_d->recovery_start == MaxSector) |
4623 | this->array.working_disks++; | |
4f5bc454 DW |
4624 | |
4625 | info_d->events = __le32_to_cpu(mpb->generation_num); | |
4626 | info_d->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
4627 | info_d->component_size = __le32_to_cpu(map->blocks_per_member); | |
4f5bc454 | 4628 | } |
1e5c6983 DW |
4629 | /* now that the disk list is up-to-date fixup recovery_start */ |
4630 | update_recovery_start(dev, this); | |
9a1608e5 | 4631 | rest = this; |
4f5bc454 DW |
4632 | } |
4633 | ||
a06d022d KW |
4634 | /* if array has bad blocks, set suitable bit in array status */ |
4635 | if (bbm_errors) | |
4636 | rest->array.state |= (1<<MD_SB_BBM_ERRORS); | |
4637 | ||
4f5bc454 | 4638 | return rest; |
cdddbdbc DW |
4639 | } |
4640 | ||
845dea95 | 4641 | |
fb49eef2 | 4642 | static __u8 imsm_check_degraded(struct intel_super *super, struct imsm_dev *dev, int failed) |
c2a1e7da | 4643 | { |
a965f303 | 4644 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2a1e7da DW |
4645 | |
4646 | if (!failed) | |
3393c6af DW |
4647 | return map->map_state == IMSM_T_STATE_UNINITIALIZED ? |
4648 | IMSM_T_STATE_UNINITIALIZED : IMSM_T_STATE_NORMAL; | |
c2a1e7da DW |
4649 | |
4650 | switch (get_imsm_raid_level(map)) { | |
4651 | case 0: | |
4652 | return IMSM_T_STATE_FAILED; | |
4653 | break; | |
4654 | case 1: | |
4655 | if (failed < map->num_members) | |
4656 | return IMSM_T_STATE_DEGRADED; | |
4657 | else | |
4658 | return IMSM_T_STATE_FAILED; | |
4659 | break; | |
4660 | case 10: | |
4661 | { | |
4662 | /** | |
c92a2527 DW |
4663 | * check to see if any mirrors have failed, otherwise we |
4664 | * are degraded. Even numbered slots are mirrored on | |
4665 | * slot+1 | |
c2a1e7da | 4666 | */ |
c2a1e7da | 4667 | int i; |
d9b420a5 N |
4668 | /* gcc -Os complains that this is unused */ |
4669 | int insync = insync; | |
c2a1e7da DW |
4670 | |
4671 | for (i = 0; i < map->num_members; i++) { | |
98130f40 | 4672 | __u32 ord = get_imsm_ord_tbl_ent(dev, i, -1); |
c92a2527 DW |
4673 | int idx = ord_to_idx(ord); |
4674 | struct imsm_disk *disk; | |
c2a1e7da | 4675 | |
c92a2527 DW |
4676 | /* reset the potential in-sync count on even-numbered |
4677 | * slots. num_copies is always 2 for imsm raid10 | |
4678 | */ | |
4679 | if ((i & 1) == 0) | |
4680 | insync = 2; | |
c2a1e7da | 4681 | |
c92a2527 | 4682 | disk = get_imsm_disk(super, idx); |
25ed7e59 | 4683 | if (!disk || is_failed(disk) || ord & IMSM_ORD_REBUILD) |
c92a2527 | 4684 | insync--; |
c2a1e7da | 4685 | |
c92a2527 DW |
4686 | /* no in-sync disks left in this mirror the |
4687 | * array has failed | |
4688 | */ | |
4689 | if (insync == 0) | |
4690 | return IMSM_T_STATE_FAILED; | |
c2a1e7da DW |
4691 | } |
4692 | ||
4693 | return IMSM_T_STATE_DEGRADED; | |
4694 | } | |
4695 | case 5: | |
4696 | if (failed < 2) | |
4697 | return IMSM_T_STATE_DEGRADED; | |
4698 | else | |
4699 | return IMSM_T_STATE_FAILED; | |
4700 | break; | |
4701 | default: | |
4702 | break; | |
4703 | } | |
4704 | ||
4705 | return map->map_state; | |
4706 | } | |
4707 | ||
ff077194 | 4708 | static int imsm_count_failed(struct intel_super *super, struct imsm_dev *dev) |
c2a1e7da DW |
4709 | { |
4710 | int i; | |
4711 | int failed = 0; | |
4712 | struct imsm_disk *disk; | |
ff077194 | 4713 | struct imsm_map *map = get_imsm_map(dev, 0); |
0556e1a2 DW |
4714 | struct imsm_map *prev = get_imsm_map(dev, dev->vol.migr_state); |
4715 | __u32 ord; | |
4716 | int idx; | |
c2a1e7da | 4717 | |
0556e1a2 DW |
4718 | /* at the beginning of migration we set IMSM_ORD_REBUILD on |
4719 | * disks that are being rebuilt. New failures are recorded to | |
4720 | * map[0]. So we look through all the disks we started with and | |
4721 | * see if any failures are still present, or if any new ones | |
4722 | * have arrived | |
4723 | * | |
4724 | * FIXME add support for online capacity expansion and | |
4725 | * raid-level-migration | |
4726 | */ | |
4727 | for (i = 0; i < prev->num_members; i++) { | |
4728 | ord = __le32_to_cpu(prev->disk_ord_tbl[i]); | |
4729 | ord |= __le32_to_cpu(map->disk_ord_tbl[i]); | |
4730 | idx = ord_to_idx(ord); | |
c2a1e7da | 4731 | |
949c47a0 | 4732 | disk = get_imsm_disk(super, idx); |
25ed7e59 | 4733 | if (!disk || is_failed(disk) || ord & IMSM_ORD_REBUILD) |
fcb84475 | 4734 | failed++; |
c2a1e7da DW |
4735 | } |
4736 | ||
4737 | return failed; | |
845dea95 NB |
4738 | } |
4739 | ||
97b4d0e9 DW |
4740 | #ifndef MDASSEMBLE |
4741 | static int imsm_open_new(struct supertype *c, struct active_array *a, | |
4742 | char *inst) | |
4743 | { | |
4744 | struct intel_super *super = c->sb; | |
4745 | struct imsm_super *mpb = super->anchor; | |
4746 | ||
4747 | if (atoi(inst) >= mpb->num_raid_devs) { | |
4748 | fprintf(stderr, "%s: subarry index %d, out of range\n", | |
4749 | __func__, atoi(inst)); | |
4750 | return -ENODEV; | |
4751 | } | |
4752 | ||
4753 | dprintf("imsm: open_new %s\n", inst); | |
4754 | a->info.container_member = atoi(inst); | |
4755 | return 0; | |
4756 | } | |
4757 | ||
0c046afd DW |
4758 | static int is_resyncing(struct imsm_dev *dev) |
4759 | { | |
4760 | struct imsm_map *migr_map; | |
4761 | ||
4762 | if (!dev->vol.migr_state) | |
4763 | return 0; | |
4764 | ||
1484e727 DW |
4765 | if (migr_type(dev) == MIGR_INIT || |
4766 | migr_type(dev) == MIGR_REPAIR) | |
0c046afd DW |
4767 | return 1; |
4768 | ||
4c9bc37b AK |
4769 | if (migr_type(dev) == MIGR_GEN_MIGR) |
4770 | return 0; | |
4771 | ||
0c046afd DW |
4772 | migr_map = get_imsm_map(dev, 1); |
4773 | ||
4c9bc37b AK |
4774 | if ((migr_map->map_state == IMSM_T_STATE_NORMAL) && |
4775 | (dev->vol.migr_type != MIGR_GEN_MIGR)) | |
0c046afd DW |
4776 | return 1; |
4777 | else | |
4778 | return 0; | |
4779 | } | |
4780 | ||
0556e1a2 DW |
4781 | /* return true if we recorded new information */ |
4782 | static int mark_failure(struct imsm_dev *dev, struct imsm_disk *disk, int idx) | |
47ee5a45 | 4783 | { |
0556e1a2 DW |
4784 | __u32 ord; |
4785 | int slot; | |
4786 | struct imsm_map *map; | |
4787 | ||
4788 | /* new failures are always set in map[0] */ | |
4789 | map = get_imsm_map(dev, 0); | |
4790 | ||
4791 | slot = get_imsm_disk_slot(map, idx); | |
4792 | if (slot < 0) | |
4793 | return 0; | |
4794 | ||
4795 | ord = __le32_to_cpu(map->disk_ord_tbl[slot]); | |
25ed7e59 | 4796 | if (is_failed(disk) && (ord & IMSM_ORD_REBUILD)) |
0556e1a2 DW |
4797 | return 0; |
4798 | ||
f2f27e63 | 4799 | disk->status |= FAILED_DISK; |
cf53434e | 4800 | disk->status &= ~CONFIGURED_DISK; |
0556e1a2 | 4801 | set_imsm_ord_tbl_ent(map, slot, idx | IMSM_ORD_REBUILD); |
f21e18ca | 4802 | if (map->failed_disk_num == 0xff) |
0556e1a2 DW |
4803 | map->failed_disk_num = slot; |
4804 | return 1; | |
4805 | } | |
4806 | ||
4807 | static void mark_missing(struct imsm_dev *dev, struct imsm_disk *disk, int idx) | |
4808 | { | |
4809 | mark_failure(dev, disk, idx); | |
4810 | ||
4811 | if (disk->scsi_id == __cpu_to_le32(~(__u32)0)) | |
4812 | return; | |
4813 | ||
47ee5a45 DW |
4814 | disk->scsi_id = __cpu_to_le32(~(__u32)0); |
4815 | memmove(&disk->serial[0], &disk->serial[1], MAX_RAID_SERIAL_LEN - 1); | |
4816 | } | |
4817 | ||
33414a01 DW |
4818 | static void handle_missing(struct intel_super *super, struct imsm_dev *dev) |
4819 | { | |
4820 | __u8 map_state; | |
4821 | struct dl *dl; | |
4822 | int failed; | |
4823 | ||
4824 | if (!super->missing) | |
4825 | return; | |
4826 | failed = imsm_count_failed(super, dev); | |
4827 | map_state = imsm_check_degraded(super, dev, failed); | |
4828 | ||
4829 | dprintf("imsm: mark missing\n"); | |
4830 | end_migration(dev, map_state); | |
4831 | for (dl = super->missing; dl; dl = dl->next) | |
4832 | mark_missing(dev, &dl->disk, dl->index); | |
4833 | super->updates_pending++; | |
4834 | } | |
4835 | ||
28bce06f AK |
4836 | static void imsm_set_disk(struct active_array *a, int n, int state); |
4837 | ||
aad6f216 | 4838 | /* Handle dirty -> clean transititions, resync and reshape. Degraded and rebuild |
0c046afd DW |
4839 | * states are handled in imsm_set_disk() with one exception, when a |
4840 | * resync is stopped due to a new failure this routine will set the | |
4841 | * 'degraded' state for the array. | |
4842 | */ | |
01f157d7 | 4843 | static int imsm_set_array_state(struct active_array *a, int consistent) |
a862209d DW |
4844 | { |
4845 | int inst = a->info.container_member; | |
4846 | struct intel_super *super = a->container->sb; | |
949c47a0 | 4847 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
a965f303 | 4848 | struct imsm_map *map = get_imsm_map(dev, 0); |
0c046afd DW |
4849 | int failed = imsm_count_failed(super, dev); |
4850 | __u8 map_state = imsm_check_degraded(super, dev, failed); | |
1e5c6983 | 4851 | __u32 blocks_per_unit; |
a862209d | 4852 | |
1af97990 AK |
4853 | if (dev->vol.migr_state && |
4854 | dev->vol.migr_type == MIGR_GEN_MIGR) { | |
4855 | /* array state change is blocked due to reshape action | |
aad6f216 N |
4856 | * We might need to |
4857 | * - abort the reshape (if last_checkpoint is 0 and action!= reshape) | |
4858 | * - finish the reshape (if last_checkpoint is big and action != reshape) | |
4859 | * - update curr_migr_unit | |
1af97990 | 4860 | */ |
aad6f216 N |
4861 | if (a->curr_action == reshape) { |
4862 | /* still reshaping, maybe update curr_migr_unit */ | |
4863 | long long blocks_per_unit = blocks_per_migr_unit(dev); | |
4864 | long long unit = a->last_checkpoint; | |
4865 | unit /= blocks_per_unit; | |
4866 | if (unit > __le32_to_cpu(dev->vol.curr_migr_unit)) { | |
4867 | dev->vol.curr_migr_unit = __cpu_to_le32(unit); | |
4868 | super->updates_pending++; | |
4869 | } | |
4870 | } else { | |
4871 | if (a->last_checkpoint == 0 && a->prev_action == reshape) { | |
4872 | /* for some reason we aborted the reshape. | |
4873 | * Better clean up | |
4874 | */ | |
4875 | struct imsm_map *map2 = get_imsm_map(dev, 1); | |
4876 | dev->vol.migr_state = 0; | |
4877 | dev->vol.migr_type = 0; | |
4878 | dev->vol.curr_migr_unit = 0; | |
4879 | memcpy(map, map2, sizeof_imsm_map(map2)); | |
4880 | super->updates_pending++; | |
4881 | } | |
4882 | if (a->last_checkpoint >= a->info.component_size) { | |
4883 | unsigned long long array_blocks; | |
4884 | int used_disks; | |
4885 | /* it seems the reshape is all done */ | |
4886 | dev->vol.migr_state = 0; | |
4887 | dev->vol.migr_type = 0; | |
4888 | dev->vol.curr_migr_unit = 0; | |
4889 | ||
98130f40 | 4890 | used_disks = imsm_num_data_members(dev, -1); |
aad6f216 N |
4891 | array_blocks = map->blocks_per_member * used_disks; |
4892 | /* round array size down to closest MB */ | |
4893 | array_blocks = (array_blocks >> SECT_PER_MB_SHIFT) | |
4894 | << SECT_PER_MB_SHIFT; | |
4895 | dev->size_low = __cpu_to_le32((__u32) array_blocks); | |
4896 | dev->size_high = __cpu_to_le32((__u32) (array_blocks >> 32)); | |
4897 | a->info.custom_array_size = array_blocks; | |
4898 | a->check_reshape = 1; /* encourage manager to update | |
4899 | * array size | |
4900 | */ | |
4901 | super->updates_pending++; | |
4902 | } | |
4903 | } | |
4904 | return 0; | |
1af97990 AK |
4905 | } |
4906 | ||
47ee5a45 | 4907 | /* before we activate this array handle any missing disks */ |
33414a01 DW |
4908 | if (consistent == 2) |
4909 | handle_missing(super, dev); | |
1e5c6983 | 4910 | |
0c046afd | 4911 | if (consistent == 2 && |
b7941fd6 | 4912 | (!is_resync_complete(&a->info) || |
0c046afd DW |
4913 | map_state != IMSM_T_STATE_NORMAL || |
4914 | dev->vol.migr_state)) | |
01f157d7 | 4915 | consistent = 0; |
272906ef | 4916 | |
b7941fd6 | 4917 | if (is_resync_complete(&a->info)) { |
0c046afd | 4918 | /* complete intialization / resync, |
0556e1a2 DW |
4919 | * recovery and interrupted recovery is completed in |
4920 | * ->set_disk | |
0c046afd DW |
4921 | */ |
4922 | if (is_resyncing(dev)) { | |
4923 | dprintf("imsm: mark resync done\n"); | |
f8f603f1 | 4924 | end_migration(dev, map_state); |
115c3803 | 4925 | super->updates_pending++; |
484240d8 | 4926 | a->last_checkpoint = 0; |
115c3803 | 4927 | } |
0c046afd DW |
4928 | } else if (!is_resyncing(dev) && !failed) { |
4929 | /* mark the start of the init process if nothing is failed */ | |
b7941fd6 | 4930 | dprintf("imsm: mark resync start\n"); |
1484e727 | 4931 | if (map->map_state == IMSM_T_STATE_UNINITIALIZED) |
e3bba0e0 | 4932 | migrate(dev, IMSM_T_STATE_NORMAL, MIGR_INIT); |
1484e727 DW |
4933 | else |
4934 | migrate(dev, IMSM_T_STATE_NORMAL, MIGR_REPAIR); | |
3393c6af | 4935 | super->updates_pending++; |
115c3803 | 4936 | } |
a862209d | 4937 | |
1e5c6983 DW |
4938 | /* check if we can update curr_migr_unit from resync_start, recovery_start */ |
4939 | blocks_per_unit = blocks_per_migr_unit(dev); | |
4f0a7acc | 4940 | if (blocks_per_unit) { |
1e5c6983 DW |
4941 | __u32 units32; |
4942 | __u64 units; | |
4943 | ||
4f0a7acc | 4944 | units = a->last_checkpoint / blocks_per_unit; |
1e5c6983 DW |
4945 | units32 = units; |
4946 | ||
4947 | /* check that we did not overflow 32-bits, and that | |
4948 | * curr_migr_unit needs updating | |
4949 | */ | |
4950 | if (units32 == units && | |
4951 | __le32_to_cpu(dev->vol.curr_migr_unit) != units32) { | |
4952 | dprintf("imsm: mark checkpoint (%u)\n", units32); | |
4953 | dev->vol.curr_migr_unit = __cpu_to_le32(units32); | |
4954 | super->updates_pending++; | |
4955 | } | |
4956 | } | |
f8f603f1 | 4957 | |
3393c6af | 4958 | /* mark dirty / clean */ |
0c046afd | 4959 | if (dev->vol.dirty != !consistent) { |
b7941fd6 | 4960 | dprintf("imsm: mark '%s'\n", consistent ? "clean" : "dirty"); |
0c046afd DW |
4961 | if (consistent) |
4962 | dev->vol.dirty = 0; | |
4963 | else | |
4964 | dev->vol.dirty = 1; | |
a862209d DW |
4965 | super->updates_pending++; |
4966 | } | |
28bce06f AK |
4967 | |
4968 | /* finalize online capacity expansion/reshape */ | |
4969 | if ((a->curr_action != reshape) && | |
4970 | (a->prev_action == reshape)) { | |
4971 | struct mdinfo *mdi; | |
4972 | ||
4973 | for (mdi = a->info.devs; mdi; mdi = mdi->next) | |
4974 | imsm_set_disk(a, mdi->disk.raid_disk, mdi->curr_state); | |
4975 | } | |
4976 | ||
01f157d7 | 4977 | return consistent; |
a862209d DW |
4978 | } |
4979 | ||
8d45d196 | 4980 | static void imsm_set_disk(struct active_array *a, int n, int state) |
845dea95 | 4981 | { |
8d45d196 DW |
4982 | int inst = a->info.container_member; |
4983 | struct intel_super *super = a->container->sb; | |
949c47a0 | 4984 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
a965f303 | 4985 | struct imsm_map *map = get_imsm_map(dev, 0); |
8d45d196 | 4986 | struct imsm_disk *disk; |
0c046afd | 4987 | int failed; |
b10b37b8 | 4988 | __u32 ord; |
0c046afd | 4989 | __u8 map_state; |
8d45d196 DW |
4990 | |
4991 | if (n > map->num_members) | |
4992 | fprintf(stderr, "imsm: set_disk %d out of range 0..%d\n", | |
4993 | n, map->num_members - 1); | |
4994 | ||
4995 | if (n < 0) | |
4996 | return; | |
4997 | ||
4e6e574a | 4998 | dprintf("imsm: set_disk %d:%x\n", n, state); |
8d45d196 | 4999 | |
98130f40 | 5000 | ord = get_imsm_ord_tbl_ent(dev, n, -1); |
b10b37b8 | 5001 | disk = get_imsm_disk(super, ord_to_idx(ord)); |
8d45d196 | 5002 | |
5802a811 | 5003 | /* check for new failures */ |
0556e1a2 DW |
5004 | if (state & DS_FAULTY) { |
5005 | if (mark_failure(dev, disk, ord_to_idx(ord))) | |
5006 | super->updates_pending++; | |
8d45d196 | 5007 | } |
47ee5a45 | 5008 | |
19859edc | 5009 | /* check if in_sync */ |
0556e1a2 | 5010 | if (state & DS_INSYNC && ord & IMSM_ORD_REBUILD && is_rebuilding(dev)) { |
b10b37b8 DW |
5011 | struct imsm_map *migr_map = get_imsm_map(dev, 1); |
5012 | ||
5013 | set_imsm_ord_tbl_ent(migr_map, n, ord_to_idx(ord)); | |
19859edc DW |
5014 | super->updates_pending++; |
5015 | } | |
8d45d196 | 5016 | |
0c046afd DW |
5017 | failed = imsm_count_failed(super, dev); |
5018 | map_state = imsm_check_degraded(super, dev, failed); | |
5802a811 | 5019 | |
0c046afd DW |
5020 | /* check if recovery complete, newly degraded, or failed */ |
5021 | if (map_state == IMSM_T_STATE_NORMAL && is_rebuilding(dev)) { | |
f8f603f1 | 5022 | end_migration(dev, map_state); |
0556e1a2 DW |
5023 | map = get_imsm_map(dev, 0); |
5024 | map->failed_disk_num = ~0; | |
0c046afd | 5025 | super->updates_pending++; |
484240d8 | 5026 | a->last_checkpoint = 0; |
0c046afd DW |
5027 | } else if (map_state == IMSM_T_STATE_DEGRADED && |
5028 | map->map_state != map_state && | |
5029 | !dev->vol.migr_state) { | |
5030 | dprintf("imsm: mark degraded\n"); | |
5031 | map->map_state = map_state; | |
5032 | super->updates_pending++; | |
484240d8 | 5033 | a->last_checkpoint = 0; |
0c046afd DW |
5034 | } else if (map_state == IMSM_T_STATE_FAILED && |
5035 | map->map_state != map_state) { | |
5036 | dprintf("imsm: mark failed\n"); | |
f8f603f1 | 5037 | end_migration(dev, map_state); |
0c046afd | 5038 | super->updates_pending++; |
484240d8 | 5039 | a->last_checkpoint = 0; |
28bce06f AK |
5040 | } else if (is_gen_migration(dev)) { |
5041 | dprintf("imsm: Detected General Migration in state: "); | |
5042 | if (map_state == IMSM_T_STATE_NORMAL) { | |
5043 | end_migration(dev, map_state); | |
5044 | map = get_imsm_map(dev, 0); | |
5045 | map->failed_disk_num = ~0; | |
5046 | dprintf("normal\n"); | |
5047 | } else { | |
5048 | if (map_state == IMSM_T_STATE_DEGRADED) { | |
5049 | printf("degraded\n"); | |
5050 | end_migration(dev, map_state); | |
5051 | } else { | |
5052 | dprintf("failed\n"); | |
5053 | } | |
5054 | map->map_state = map_state; | |
5055 | } | |
5056 | super->updates_pending++; | |
5802a811 | 5057 | } |
845dea95 NB |
5058 | } |
5059 | ||
f796af5d | 5060 | static int store_imsm_mpb(int fd, struct imsm_super *mpb) |
c2a1e7da | 5061 | { |
f796af5d | 5062 | void *buf = mpb; |
c2a1e7da DW |
5063 | __u32 mpb_size = __le32_to_cpu(mpb->mpb_size); |
5064 | unsigned long long dsize; | |
5065 | unsigned long long sectors; | |
5066 | ||
5067 | get_dev_size(fd, NULL, &dsize); | |
5068 | ||
272f648f DW |
5069 | if (mpb_size > 512) { |
5070 | /* -1 to account for anchor */ | |
5071 | sectors = mpb_sectors(mpb) - 1; | |
c2a1e7da | 5072 | |
272f648f DW |
5073 | /* write the extended mpb to the sectors preceeding the anchor */ |
5074 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) | |
5075 | return 1; | |
c2a1e7da | 5076 | |
f21e18ca N |
5077 | if ((unsigned long long)write(fd, buf + 512, 512 * sectors) |
5078 | != 512 * sectors) | |
272f648f DW |
5079 | return 1; |
5080 | } | |
c2a1e7da | 5081 | |
272f648f DW |
5082 | /* first block is stored on second to last sector of the disk */ |
5083 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
c2a1e7da DW |
5084 | return 1; |
5085 | ||
f796af5d | 5086 | if (write(fd, buf, 512) != 512) |
c2a1e7da DW |
5087 | return 1; |
5088 | ||
c2a1e7da DW |
5089 | return 0; |
5090 | } | |
5091 | ||
2e735d19 | 5092 | static void imsm_sync_metadata(struct supertype *container) |
845dea95 | 5093 | { |
2e735d19 | 5094 | struct intel_super *super = container->sb; |
c2a1e7da | 5095 | |
1a64be56 | 5096 | dprintf("sync metadata: %d\n", super->updates_pending); |
c2a1e7da DW |
5097 | if (!super->updates_pending) |
5098 | return; | |
5099 | ||
36988a3d | 5100 | write_super_imsm(container, 0); |
c2a1e7da DW |
5101 | |
5102 | super->updates_pending = 0; | |
845dea95 NB |
5103 | } |
5104 | ||
272906ef DW |
5105 | static struct dl *imsm_readd(struct intel_super *super, int idx, struct active_array *a) |
5106 | { | |
5107 | struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member); | |
98130f40 | 5108 | int i = get_imsm_disk_idx(dev, idx, -1); |
272906ef DW |
5109 | struct dl *dl; |
5110 | ||
5111 | for (dl = super->disks; dl; dl = dl->next) | |
5112 | if (dl->index == i) | |
5113 | break; | |
5114 | ||
25ed7e59 | 5115 | if (dl && is_failed(&dl->disk)) |
272906ef DW |
5116 | dl = NULL; |
5117 | ||
5118 | if (dl) | |
5119 | dprintf("%s: found %x:%x\n", __func__, dl->major, dl->minor); | |
5120 | ||
5121 | return dl; | |
5122 | } | |
5123 | ||
a20d2ba5 | 5124 | static struct dl *imsm_add_spare(struct intel_super *super, int slot, |
8ba77d32 AK |
5125 | struct active_array *a, int activate_new, |
5126 | struct mdinfo *additional_test_list) | |
272906ef DW |
5127 | { |
5128 | struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member); | |
98130f40 | 5129 | int idx = get_imsm_disk_idx(dev, slot, -1); |
a20d2ba5 DW |
5130 | struct imsm_super *mpb = super->anchor; |
5131 | struct imsm_map *map; | |
272906ef DW |
5132 | unsigned long long pos; |
5133 | struct mdinfo *d; | |
5134 | struct extent *ex; | |
a20d2ba5 | 5135 | int i, j; |
272906ef | 5136 | int found; |
569cc43f DW |
5137 | __u32 array_start = 0; |
5138 | __u32 array_end = 0; | |
272906ef | 5139 | struct dl *dl; |
6c932028 | 5140 | struct mdinfo *test_list; |
272906ef DW |
5141 | |
5142 | for (dl = super->disks; dl; dl = dl->next) { | |
5143 | /* If in this array, skip */ | |
5144 | for (d = a->info.devs ; d ; d = d->next) | |
e553d2a4 DW |
5145 | if (d->state_fd >= 0 && |
5146 | d->disk.major == dl->major && | |
272906ef | 5147 | d->disk.minor == dl->minor) { |
8ba77d32 AK |
5148 | dprintf("%x:%x already in array\n", |
5149 | dl->major, dl->minor); | |
272906ef DW |
5150 | break; |
5151 | } | |
5152 | if (d) | |
5153 | continue; | |
6c932028 AK |
5154 | test_list = additional_test_list; |
5155 | while (test_list) { | |
5156 | if (test_list->disk.major == dl->major && | |
5157 | test_list->disk.minor == dl->minor) { | |
8ba77d32 AK |
5158 | dprintf("%x:%x already in additional test list\n", |
5159 | dl->major, dl->minor); | |
5160 | break; | |
5161 | } | |
6c932028 | 5162 | test_list = test_list->next; |
8ba77d32 | 5163 | } |
6c932028 | 5164 | if (test_list) |
8ba77d32 | 5165 | continue; |
272906ef | 5166 | |
e553d2a4 | 5167 | /* skip in use or failed drives */ |
25ed7e59 | 5168 | if (is_failed(&dl->disk) || idx == dl->index || |
df474657 DW |
5169 | dl->index == -2) { |
5170 | dprintf("%x:%x status (failed: %d index: %d)\n", | |
25ed7e59 | 5171 | dl->major, dl->minor, is_failed(&dl->disk), idx); |
9a1608e5 DW |
5172 | continue; |
5173 | } | |
5174 | ||
a20d2ba5 DW |
5175 | /* skip pure spares when we are looking for partially |
5176 | * assimilated drives | |
5177 | */ | |
5178 | if (dl->index == -1 && !activate_new) | |
5179 | continue; | |
5180 | ||
272906ef | 5181 | /* Does this unused device have the requisite free space? |
a20d2ba5 | 5182 | * It needs to be able to cover all member volumes |
272906ef DW |
5183 | */ |
5184 | ex = get_extents(super, dl); | |
5185 | if (!ex) { | |
5186 | dprintf("cannot get extents\n"); | |
5187 | continue; | |
5188 | } | |
a20d2ba5 DW |
5189 | for (i = 0; i < mpb->num_raid_devs; i++) { |
5190 | dev = get_imsm_dev(super, i); | |
5191 | map = get_imsm_map(dev, 0); | |
272906ef | 5192 | |
a20d2ba5 DW |
5193 | /* check if this disk is already a member of |
5194 | * this array | |
272906ef | 5195 | */ |
620b1713 | 5196 | if (get_imsm_disk_slot(map, dl->index) >= 0) |
a20d2ba5 DW |
5197 | continue; |
5198 | ||
5199 | found = 0; | |
5200 | j = 0; | |
5201 | pos = 0; | |
5202 | array_start = __le32_to_cpu(map->pba_of_lba0); | |
329c8278 DW |
5203 | array_end = array_start + |
5204 | __le32_to_cpu(map->blocks_per_member) - 1; | |
a20d2ba5 DW |
5205 | |
5206 | do { | |
5207 | /* check that we can start at pba_of_lba0 with | |
5208 | * blocks_per_member of space | |
5209 | */ | |
329c8278 | 5210 | if (array_start >= pos && array_end < ex[j].start) { |
a20d2ba5 DW |
5211 | found = 1; |
5212 | break; | |
5213 | } | |
5214 | pos = ex[j].start + ex[j].size; | |
5215 | j++; | |
5216 | } while (ex[j-1].size); | |
5217 | ||
5218 | if (!found) | |
272906ef | 5219 | break; |
a20d2ba5 | 5220 | } |
272906ef DW |
5221 | |
5222 | free(ex); | |
a20d2ba5 | 5223 | if (i < mpb->num_raid_devs) { |
329c8278 DW |
5224 | dprintf("%x:%x does not have %u to %u available\n", |
5225 | dl->major, dl->minor, array_start, array_end); | |
272906ef DW |
5226 | /* No room */ |
5227 | continue; | |
a20d2ba5 DW |
5228 | } |
5229 | return dl; | |
272906ef DW |
5230 | } |
5231 | ||
5232 | return dl; | |
5233 | } | |
5234 | ||
95d07a2c LM |
5235 | |
5236 | static int imsm_rebuild_allowed(struct supertype *cont, int dev_idx, int failed) | |
5237 | { | |
5238 | struct imsm_dev *dev2; | |
5239 | struct imsm_map *map; | |
5240 | struct dl *idisk; | |
5241 | int slot; | |
5242 | int idx; | |
5243 | __u8 state; | |
5244 | ||
5245 | dev2 = get_imsm_dev(cont->sb, dev_idx); | |
5246 | if (dev2) { | |
5247 | state = imsm_check_degraded(cont->sb, dev2, failed); | |
5248 | if (state == IMSM_T_STATE_FAILED) { | |
5249 | map = get_imsm_map(dev2, 0); | |
5250 | if (!map) | |
5251 | return 1; | |
5252 | for (slot = 0; slot < map->num_members; slot++) { | |
5253 | /* | |
5254 | * Check if failed disks are deleted from intel | |
5255 | * disk list or are marked to be deleted | |
5256 | */ | |
98130f40 | 5257 | idx = get_imsm_disk_idx(dev2, slot, -1); |
95d07a2c LM |
5258 | idisk = get_imsm_dl_disk(cont->sb, idx); |
5259 | /* | |
5260 | * Do not rebuild the array if failed disks | |
5261 | * from failed sub-array are not removed from | |
5262 | * container. | |
5263 | */ | |
5264 | if (idisk && | |
5265 | is_failed(&idisk->disk) && | |
5266 | (idisk->action != DISK_REMOVE)) | |
5267 | return 0; | |
5268 | } | |
5269 | } | |
5270 | } | |
5271 | return 1; | |
5272 | } | |
5273 | ||
88758e9d DW |
5274 | static struct mdinfo *imsm_activate_spare(struct active_array *a, |
5275 | struct metadata_update **updates) | |
5276 | { | |
5277 | /** | |
d23fe947 DW |
5278 | * Find a device with unused free space and use it to replace a |
5279 | * failed/vacant region in an array. We replace failed regions one a | |
5280 | * array at a time. The result is that a new spare disk will be added | |
5281 | * to the first failed array and after the monitor has finished | |
5282 | * propagating failures the remainder will be consumed. | |
88758e9d | 5283 | * |
d23fe947 DW |
5284 | * FIXME add a capability for mdmon to request spares from another |
5285 | * container. | |
88758e9d DW |
5286 | */ |
5287 | ||
5288 | struct intel_super *super = a->container->sb; | |
88758e9d | 5289 | int inst = a->info.container_member; |
949c47a0 | 5290 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
a965f303 | 5291 | struct imsm_map *map = get_imsm_map(dev, 0); |
88758e9d DW |
5292 | int failed = a->info.array.raid_disks; |
5293 | struct mdinfo *rv = NULL; | |
5294 | struct mdinfo *d; | |
5295 | struct mdinfo *di; | |
5296 | struct metadata_update *mu; | |
5297 | struct dl *dl; | |
5298 | struct imsm_update_activate_spare *u; | |
5299 | int num_spares = 0; | |
5300 | int i; | |
95d07a2c | 5301 | int allowed; |
88758e9d DW |
5302 | |
5303 | for (d = a->info.devs ; d ; d = d->next) { | |
5304 | if ((d->curr_state & DS_FAULTY) && | |
5305 | d->state_fd >= 0) | |
5306 | /* wait for Removal to happen */ | |
5307 | return NULL; | |
5308 | if (d->state_fd >= 0) | |
5309 | failed--; | |
5310 | } | |
5311 | ||
5312 | dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n", | |
5313 | inst, failed, a->info.array.raid_disks, a->info.array.level); | |
1af97990 AK |
5314 | |
5315 | if (dev->vol.migr_state && | |
5316 | dev->vol.migr_type == MIGR_GEN_MIGR) | |
5317 | /* No repair during migration */ | |
5318 | return NULL; | |
5319 | ||
fb49eef2 | 5320 | if (imsm_check_degraded(super, dev, failed) != IMSM_T_STATE_DEGRADED) |
88758e9d DW |
5321 | return NULL; |
5322 | ||
95d07a2c LM |
5323 | /* |
5324 | * If there are any failed disks check state of the other volume. | |
5325 | * Block rebuild if the another one is failed until failed disks | |
5326 | * are removed from container. | |
5327 | */ | |
5328 | if (failed) { | |
5329 | dprintf("found failed disks in %s, check if there another" | |
5330 | "failed sub-array.\n", | |
5331 | dev->volume); | |
5332 | /* check if states of the other volumes allow for rebuild */ | |
5333 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
5334 | if (i != inst) { | |
5335 | allowed = imsm_rebuild_allowed(a->container, | |
5336 | i, failed); | |
5337 | if (!allowed) | |
5338 | return NULL; | |
5339 | } | |
5340 | } | |
5341 | } | |
5342 | ||
88758e9d | 5343 | /* For each slot, if it is not working, find a spare */ |
88758e9d DW |
5344 | for (i = 0; i < a->info.array.raid_disks; i++) { |
5345 | for (d = a->info.devs ; d ; d = d->next) | |
5346 | if (d->disk.raid_disk == i) | |
5347 | break; | |
5348 | dprintf("found %d: %p %x\n", i, d, d?d->curr_state:0); | |
5349 | if (d && (d->state_fd >= 0)) | |
5350 | continue; | |
5351 | ||
272906ef | 5352 | /* |
a20d2ba5 DW |
5353 | * OK, this device needs recovery. Try to re-add the |
5354 | * previous occupant of this slot, if this fails see if | |
5355 | * we can continue the assimilation of a spare that was | |
5356 | * partially assimilated, finally try to activate a new | |
5357 | * spare. | |
272906ef DW |
5358 | */ |
5359 | dl = imsm_readd(super, i, a); | |
5360 | if (!dl) | |
8ba77d32 | 5361 | dl = imsm_add_spare(super, i, a, 0, NULL); |
a20d2ba5 | 5362 | if (!dl) |
8ba77d32 | 5363 | dl = imsm_add_spare(super, i, a, 1, NULL); |
272906ef DW |
5364 | if (!dl) |
5365 | continue; | |
5366 | ||
5367 | /* found a usable disk with enough space */ | |
5368 | di = malloc(sizeof(*di)); | |
79244939 DW |
5369 | if (!di) |
5370 | continue; | |
272906ef DW |
5371 | memset(di, 0, sizeof(*di)); |
5372 | ||
5373 | /* dl->index will be -1 in the case we are activating a | |
5374 | * pristine spare. imsm_process_update() will create a | |
5375 | * new index in this case. Once a disk is found to be | |
5376 | * failed in all member arrays it is kicked from the | |
5377 | * metadata | |
5378 | */ | |
5379 | di->disk.number = dl->index; | |
d23fe947 | 5380 | |
272906ef DW |
5381 | /* (ab)use di->devs to store a pointer to the device |
5382 | * we chose | |
5383 | */ | |
5384 | di->devs = (struct mdinfo *) dl; | |
5385 | ||
5386 | di->disk.raid_disk = i; | |
5387 | di->disk.major = dl->major; | |
5388 | di->disk.minor = dl->minor; | |
5389 | di->disk.state = 0; | |
d23534e4 | 5390 | di->recovery_start = 0; |
272906ef DW |
5391 | di->data_offset = __le32_to_cpu(map->pba_of_lba0); |
5392 | di->component_size = a->info.component_size; | |
5393 | di->container_member = inst; | |
148acb7b | 5394 | super->random = random32(); |
272906ef DW |
5395 | di->next = rv; |
5396 | rv = di; | |
5397 | num_spares++; | |
5398 | dprintf("%x:%x to be %d at %llu\n", dl->major, dl->minor, | |
5399 | i, di->data_offset); | |
88758e9d | 5400 | |
272906ef | 5401 | break; |
88758e9d DW |
5402 | } |
5403 | ||
5404 | if (!rv) | |
5405 | /* No spares found */ | |
5406 | return rv; | |
5407 | /* Now 'rv' has a list of devices to return. | |
5408 | * Create a metadata_update record to update the | |
5409 | * disk_ord_tbl for the array | |
5410 | */ | |
5411 | mu = malloc(sizeof(*mu)); | |
79244939 DW |
5412 | if (mu) { |
5413 | mu->buf = malloc(sizeof(struct imsm_update_activate_spare) * num_spares); | |
5414 | if (mu->buf == NULL) { | |
5415 | free(mu); | |
5416 | mu = NULL; | |
5417 | } | |
5418 | } | |
5419 | if (!mu) { | |
5420 | while (rv) { | |
5421 | struct mdinfo *n = rv->next; | |
5422 | ||
5423 | free(rv); | |
5424 | rv = n; | |
5425 | } | |
5426 | return NULL; | |
5427 | } | |
5428 | ||
88758e9d | 5429 | mu->space = NULL; |
cb23f1f4 | 5430 | mu->space_list = NULL; |
88758e9d DW |
5431 | mu->len = sizeof(struct imsm_update_activate_spare) * num_spares; |
5432 | mu->next = *updates; | |
5433 | u = (struct imsm_update_activate_spare *) mu->buf; | |
5434 | ||
5435 | for (di = rv ; di ; di = di->next) { | |
5436 | u->type = update_activate_spare; | |
d23fe947 DW |
5437 | u->dl = (struct dl *) di->devs; |
5438 | di->devs = NULL; | |
88758e9d DW |
5439 | u->slot = di->disk.raid_disk; |
5440 | u->array = inst; | |
5441 | u->next = u + 1; | |
5442 | u++; | |
5443 | } | |
5444 | (u-1)->next = NULL; | |
5445 | *updates = mu; | |
5446 | ||
5447 | return rv; | |
5448 | } | |
5449 | ||
54c2c1ea | 5450 | static int disks_overlap(struct intel_super *super, int idx, struct imsm_update_create_array *u) |
8273f55e | 5451 | { |
54c2c1ea DW |
5452 | struct imsm_dev *dev = get_imsm_dev(super, idx); |
5453 | struct imsm_map *map = get_imsm_map(dev, 0); | |
5454 | struct imsm_map *new_map = get_imsm_map(&u->dev, 0); | |
5455 | struct disk_info *inf = get_disk_info(u); | |
5456 | struct imsm_disk *disk; | |
8273f55e DW |
5457 | int i; |
5458 | int j; | |
8273f55e | 5459 | |
54c2c1ea | 5460 | for (i = 0; i < map->num_members; i++) { |
98130f40 | 5461 | disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i, -1)); |
54c2c1ea DW |
5462 | for (j = 0; j < new_map->num_members; j++) |
5463 | if (serialcmp(disk->serial, inf[j].serial) == 0) | |
8273f55e DW |
5464 | return 1; |
5465 | } | |
5466 | ||
5467 | return 0; | |
5468 | } | |
5469 | ||
1a64be56 LM |
5470 | |
5471 | static struct dl *get_disk_super(struct intel_super *super, int major, int minor) | |
5472 | { | |
5473 | struct dl *dl = NULL; | |
5474 | for (dl = super->disks; dl; dl = dl->next) | |
5475 | if ((dl->major == major) && (dl->minor == minor)) | |
5476 | return dl; | |
5477 | return NULL; | |
5478 | } | |
5479 | ||
5480 | static int remove_disk_super(struct intel_super *super, int major, int minor) | |
5481 | { | |
5482 | struct dl *prev = NULL; | |
5483 | struct dl *dl; | |
5484 | ||
5485 | prev = NULL; | |
5486 | for (dl = super->disks; dl; dl = dl->next) { | |
5487 | if ((dl->major == major) && (dl->minor == minor)) { | |
5488 | /* remove */ | |
5489 | if (prev) | |
5490 | prev->next = dl->next; | |
5491 | else | |
5492 | super->disks = dl->next; | |
5493 | dl->next = NULL; | |
5494 | __free_imsm_disk(dl); | |
5495 | dprintf("%s: removed %x:%x\n", | |
5496 | __func__, major, minor); | |
5497 | break; | |
5498 | } | |
5499 | prev = dl; | |
5500 | } | |
5501 | return 0; | |
5502 | } | |
5503 | ||
f21e18ca | 5504 | static void imsm_delete(struct intel_super *super, struct dl **dlp, unsigned index); |
ae6aad82 | 5505 | |
1a64be56 LM |
5506 | static int add_remove_disk_update(struct intel_super *super) |
5507 | { | |
5508 | int check_degraded = 0; | |
5509 | struct dl *disk = NULL; | |
5510 | /* add/remove some spares to/from the metadata/contrainer */ | |
5511 | while (super->disk_mgmt_list) { | |
5512 | struct dl *disk_cfg; | |
5513 | ||
5514 | disk_cfg = super->disk_mgmt_list; | |
5515 | super->disk_mgmt_list = disk_cfg->next; | |
5516 | disk_cfg->next = NULL; | |
5517 | ||
5518 | if (disk_cfg->action == DISK_ADD) { | |
5519 | disk_cfg->next = super->disks; | |
5520 | super->disks = disk_cfg; | |
5521 | check_degraded = 1; | |
5522 | dprintf("%s: added %x:%x\n", | |
5523 | __func__, disk_cfg->major, | |
5524 | disk_cfg->minor); | |
5525 | } else if (disk_cfg->action == DISK_REMOVE) { | |
5526 | dprintf("Disk remove action processed: %x.%x\n", | |
5527 | disk_cfg->major, disk_cfg->minor); | |
5528 | disk = get_disk_super(super, | |
5529 | disk_cfg->major, | |
5530 | disk_cfg->minor); | |
5531 | if (disk) { | |
5532 | /* store action status */ | |
5533 | disk->action = DISK_REMOVE; | |
5534 | /* remove spare disks only */ | |
5535 | if (disk->index == -1) { | |
5536 | remove_disk_super(super, | |
5537 | disk_cfg->major, | |
5538 | disk_cfg->minor); | |
5539 | } | |
5540 | } | |
5541 | /* release allocate disk structure */ | |
5542 | __free_imsm_disk(disk_cfg); | |
5543 | } | |
5544 | } | |
5545 | return check_degraded; | |
5546 | } | |
5547 | ||
e8319a19 DW |
5548 | static void imsm_process_update(struct supertype *st, |
5549 | struct metadata_update *update) | |
5550 | { | |
5551 | /** | |
5552 | * crack open the metadata_update envelope to find the update record | |
5553 | * update can be one of: | |
d195167d AK |
5554 | * update_reshape_container_disks - all the arrays in the container |
5555 | * are being reshaped to have more devices. We need to mark | |
5556 | * the arrays for general migration and convert selected spares | |
5557 | * into active devices. | |
5558 | * update_activate_spare - a spare device has replaced a failed | |
e8319a19 DW |
5559 | * device in an array, update the disk_ord_tbl. If this disk is |
5560 | * present in all member arrays then also clear the SPARE_DISK | |
5561 | * flag | |
d195167d AK |
5562 | * update_create_array |
5563 | * update_kill_array | |
5564 | * update_rename_array | |
5565 | * update_add_remove_disk | |
e8319a19 DW |
5566 | */ |
5567 | struct intel_super *super = st->sb; | |
4d7b1503 | 5568 | struct imsm_super *mpb; |
e8319a19 DW |
5569 | enum imsm_update_type type = *(enum imsm_update_type *) update->buf; |
5570 | ||
4d7b1503 DW |
5571 | /* update requires a larger buf but the allocation failed */ |
5572 | if (super->next_len && !super->next_buf) { | |
5573 | super->next_len = 0; | |
5574 | return; | |
5575 | } | |
5576 | ||
5577 | if (super->next_buf) { | |
5578 | memcpy(super->next_buf, super->buf, super->len); | |
5579 | free(super->buf); | |
5580 | super->len = super->next_len; | |
5581 | super->buf = super->next_buf; | |
5582 | ||
5583 | super->next_len = 0; | |
5584 | super->next_buf = NULL; | |
5585 | } | |
5586 | ||
5587 | mpb = super->anchor; | |
5588 | ||
e8319a19 | 5589 | switch (type) { |
78b10e66 | 5590 | case update_reshape_container_disks: { |
d195167d AK |
5591 | struct imsm_update_reshape *u = (void *)update->buf; |
5592 | struct dl *new_disk; | |
5593 | struct intel_dev *id; | |
5594 | int i; | |
5595 | int delta_disks = u->new_raid_disks - u->old_raid_disks; | |
5596 | void **tofree = NULL; | |
834acc0b | 5597 | int devices_to_reshape = 1; |
d195167d AK |
5598 | |
5599 | dprintf("imsm: imsm_process_update() for update_reshape\n"); | |
5600 | ||
5601 | /* enable spares to use in array */ | |
5602 | for (i = 0; i < delta_disks; i++) { | |
d195167d AK |
5603 | new_disk = get_disk_super(super, |
5604 | major(u->new_disks[i]), | |
5605 | minor(u->new_disks[i])); | |
d677e0b8 AK |
5606 | dprintf("imsm: imsm_process_update(): new disk "\ |
5607 | "for reshape is: %i:%i (%p, index = %i)\n", | |
5608 | major(u->new_disks[i]), minor(u->new_disks[i]), | |
5609 | new_disk, new_disk->index); | |
5610 | if ((new_disk == NULL) || | |
5611 | ((new_disk->index >= 0) && | |
5612 | (new_disk->index < u->old_raid_disks))) | |
d195167d AK |
5613 | goto update_reshape_exit; |
5614 | ||
5615 | new_disk->index = mpb->num_disks++; | |
5616 | /* slot to fill in autolayout */ | |
5617 | new_disk->raiddisk = new_disk->index; | |
5618 | new_disk->disk.status |= | |
5619 | CONFIGURED_DISK; | |
5620 | new_disk->disk.status &= ~SPARE_DISK; | |
5621 | } | |
5622 | ||
690aae1a | 5623 | dprintf("imsm: process_update(): update_reshape: volume set" |
d195167d | 5624 | " mpb->num_raid_devs = %i\n", mpb->num_raid_devs); |
834acc0b | 5625 | /* manage changes in volume |
d195167d AK |
5626 | */ |
5627 | for (id = super->devlist ; id; id = id->next) { | |
5628 | void **sp = update->space_list; | |
5629 | struct imsm_dev *newdev; | |
5630 | struct imsm_map *newmap, *oldmap; | |
5631 | ||
5632 | if (!sp) | |
5633 | continue; | |
5634 | update->space_list = *sp; | |
5635 | newdev = (void*)sp; | |
5636 | /* Copy the dev, but not (all of) the map */ | |
5637 | memcpy(newdev, id->dev, sizeof(*newdev)); | |
5638 | oldmap = get_imsm_map(id->dev, 0); | |
5639 | newmap = get_imsm_map(newdev, 0); | |
5640 | /* Copy the current map */ | |
5641 | memcpy(newmap, oldmap, sizeof_imsm_map(oldmap)); | |
834acc0b AK |
5642 | /* update one device only |
5643 | */ | |
5644 | if (devices_to_reshape) { | |
5645 | dprintf("process_update(): modifying "\ | |
5646 | "subdev: %i\n", id->index); | |
5647 | devices_to_reshape--; | |
5648 | newdev->vol.migr_state = 1; | |
5649 | newdev->vol.curr_migr_unit = 0; | |
5650 | newdev->vol.migr_type = MIGR_GEN_MIGR; | |
5651 | newmap->num_members = u->new_raid_disks; | |
5652 | for (i = 0; i < delta_disks; i++) { | |
5653 | set_imsm_ord_tbl_ent(newmap, | |
5654 | u->old_raid_disks + i, | |
5655 | u->old_raid_disks + i); | |
5656 | } | |
5657 | /* New map is correct, now need to save old map | |
5658 | */ | |
5659 | newmap = get_imsm_map(newdev, 1); | |
5660 | memcpy(newmap, oldmap, sizeof_imsm_map(oldmap)); | |
d195167d | 5661 | } |
d195167d AK |
5662 | |
5663 | sp = (void **)id->dev; | |
5664 | id->dev = newdev; | |
5665 | *sp = tofree; | |
5666 | tofree = sp; | |
5667 | } | |
5668 | ||
5669 | update->space_list = tofree; | |
5670 | super->updates_pending++; | |
5671 | update_reshape_exit: | |
78b10e66 N |
5672 | break; |
5673 | } | |
e8319a19 DW |
5674 | case update_activate_spare: { |
5675 | struct imsm_update_activate_spare *u = (void *) update->buf; | |
949c47a0 | 5676 | struct imsm_dev *dev = get_imsm_dev(super, u->array); |
a965f303 | 5677 | struct imsm_map *map = get_imsm_map(dev, 0); |
0c046afd | 5678 | struct imsm_map *migr_map; |
e8319a19 DW |
5679 | struct active_array *a; |
5680 | struct imsm_disk *disk; | |
0c046afd | 5681 | __u8 to_state; |
e8319a19 | 5682 | struct dl *dl; |
e8319a19 | 5683 | unsigned int found; |
0c046afd | 5684 | int failed; |
98130f40 | 5685 | int victim = get_imsm_disk_idx(dev, u->slot, -1); |
e8319a19 DW |
5686 | int i; |
5687 | ||
5688 | for (dl = super->disks; dl; dl = dl->next) | |
d23fe947 | 5689 | if (dl == u->dl) |
e8319a19 DW |
5690 | break; |
5691 | ||
5692 | if (!dl) { | |
5693 | fprintf(stderr, "error: imsm_activate_spare passed " | |
1f24f035 DW |
5694 | "an unknown disk (index: %d)\n", |
5695 | u->dl->index); | |
e8319a19 DW |
5696 | return; |
5697 | } | |
5698 | ||
5699 | super->updates_pending++; | |
5700 | ||
0c046afd DW |
5701 | /* count failures (excluding rebuilds and the victim) |
5702 | * to determine map[0] state | |
5703 | */ | |
5704 | failed = 0; | |
5705 | for (i = 0; i < map->num_members; i++) { | |
5706 | if (i == u->slot) | |
5707 | continue; | |
98130f40 AK |
5708 | disk = get_imsm_disk(super, |
5709 | get_imsm_disk_idx(dev, i, -1)); | |
25ed7e59 | 5710 | if (!disk || is_failed(disk)) |
0c046afd DW |
5711 | failed++; |
5712 | } | |
5713 | ||
d23fe947 DW |
5714 | /* adding a pristine spare, assign a new index */ |
5715 | if (dl->index < 0) { | |
5716 | dl->index = super->anchor->num_disks; | |
5717 | super->anchor->num_disks++; | |
5718 | } | |
d23fe947 | 5719 | disk = &dl->disk; |
f2f27e63 DW |
5720 | disk->status |= CONFIGURED_DISK; |
5721 | disk->status &= ~SPARE_DISK; | |
e8319a19 | 5722 | |
0c046afd DW |
5723 | /* mark rebuild */ |
5724 | to_state = imsm_check_degraded(super, dev, failed); | |
5725 | map->map_state = IMSM_T_STATE_DEGRADED; | |
e3bba0e0 | 5726 | migrate(dev, to_state, MIGR_REBUILD); |
0c046afd DW |
5727 | migr_map = get_imsm_map(dev, 1); |
5728 | set_imsm_ord_tbl_ent(map, u->slot, dl->index); | |
5729 | set_imsm_ord_tbl_ent(migr_map, u->slot, dl->index | IMSM_ORD_REBUILD); | |
5730 | ||
148acb7b DW |
5731 | /* update the family_num to mark a new container |
5732 | * generation, being careful to record the existing | |
5733 | * family_num in orig_family_num to clean up after | |
5734 | * earlier mdadm versions that neglected to set it. | |
5735 | */ | |
5736 | if (mpb->orig_family_num == 0) | |
5737 | mpb->orig_family_num = mpb->family_num; | |
5738 | mpb->family_num += super->random; | |
5739 | ||
e8319a19 DW |
5740 | /* count arrays using the victim in the metadata */ |
5741 | found = 0; | |
5742 | for (a = st->arrays; a ; a = a->next) { | |
949c47a0 | 5743 | dev = get_imsm_dev(super, a->info.container_member); |
620b1713 DW |
5744 | map = get_imsm_map(dev, 0); |
5745 | ||
5746 | if (get_imsm_disk_slot(map, victim) >= 0) | |
5747 | found++; | |
e8319a19 DW |
5748 | } |
5749 | ||
24565c9a | 5750 | /* delete the victim if it is no longer being |
e8319a19 DW |
5751 | * utilized anywhere |
5752 | */ | |
e8319a19 | 5753 | if (!found) { |
ae6aad82 | 5754 | struct dl **dlp; |
24565c9a | 5755 | |
47ee5a45 DW |
5756 | /* We know that 'manager' isn't touching anything, |
5757 | * so it is safe to delete | |
5758 | */ | |
24565c9a | 5759 | for (dlp = &super->disks; *dlp; dlp = &(*dlp)->next) |
ae6aad82 DW |
5760 | if ((*dlp)->index == victim) |
5761 | break; | |
47ee5a45 DW |
5762 | |
5763 | /* victim may be on the missing list */ | |
5764 | if (!*dlp) | |
5765 | for (dlp = &super->missing; *dlp; dlp = &(*dlp)->next) | |
5766 | if ((*dlp)->index == victim) | |
5767 | break; | |
24565c9a | 5768 | imsm_delete(super, dlp, victim); |
e8319a19 | 5769 | } |
8273f55e DW |
5770 | break; |
5771 | } | |
5772 | case update_create_array: { | |
5773 | /* someone wants to create a new array, we need to be aware of | |
5774 | * a few races/collisions: | |
5775 | * 1/ 'Create' called by two separate instances of mdadm | |
5776 | * 2/ 'Create' versus 'activate_spare': mdadm has chosen | |
5777 | * devices that have since been assimilated via | |
5778 | * activate_spare. | |
5779 | * In the event this update can not be carried out mdadm will | |
5780 | * (FIX ME) notice that its update did not take hold. | |
5781 | */ | |
5782 | struct imsm_update_create_array *u = (void *) update->buf; | |
ba2de7ba | 5783 | struct intel_dev *dv; |
8273f55e DW |
5784 | struct imsm_dev *dev; |
5785 | struct imsm_map *map, *new_map; | |
5786 | unsigned long long start, end; | |
5787 | unsigned long long new_start, new_end; | |
5788 | int i; | |
54c2c1ea DW |
5789 | struct disk_info *inf; |
5790 | struct dl *dl; | |
8273f55e DW |
5791 | |
5792 | /* handle racing creates: first come first serve */ | |
5793 | if (u->dev_idx < mpb->num_raid_devs) { | |
5794 | dprintf("%s: subarray %d already defined\n", | |
5795 | __func__, u->dev_idx); | |
ba2de7ba | 5796 | goto create_error; |
8273f55e DW |
5797 | } |
5798 | ||
5799 | /* check update is next in sequence */ | |
5800 | if (u->dev_idx != mpb->num_raid_devs) { | |
6a3e913e DW |
5801 | dprintf("%s: can not create array %d expected index %d\n", |
5802 | __func__, u->dev_idx, mpb->num_raid_devs); | |
ba2de7ba | 5803 | goto create_error; |
8273f55e DW |
5804 | } |
5805 | ||
a965f303 | 5806 | new_map = get_imsm_map(&u->dev, 0); |
8273f55e DW |
5807 | new_start = __le32_to_cpu(new_map->pba_of_lba0); |
5808 | new_end = new_start + __le32_to_cpu(new_map->blocks_per_member); | |
54c2c1ea | 5809 | inf = get_disk_info(u); |
8273f55e DW |
5810 | |
5811 | /* handle activate_spare versus create race: | |
5812 | * check to make sure that overlapping arrays do not include | |
5813 | * overalpping disks | |
5814 | */ | |
5815 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
949c47a0 | 5816 | dev = get_imsm_dev(super, i); |
a965f303 | 5817 | map = get_imsm_map(dev, 0); |
8273f55e DW |
5818 | start = __le32_to_cpu(map->pba_of_lba0); |
5819 | end = start + __le32_to_cpu(map->blocks_per_member); | |
5820 | if ((new_start >= start && new_start <= end) || | |
5821 | (start >= new_start && start <= new_end)) | |
54c2c1ea DW |
5822 | /* overlap */; |
5823 | else | |
5824 | continue; | |
5825 | ||
5826 | if (disks_overlap(super, i, u)) { | |
8273f55e | 5827 | dprintf("%s: arrays overlap\n", __func__); |
ba2de7ba | 5828 | goto create_error; |
8273f55e DW |
5829 | } |
5830 | } | |
8273f55e | 5831 | |
949c47a0 DW |
5832 | /* check that prepare update was successful */ |
5833 | if (!update->space) { | |
5834 | dprintf("%s: prepare update failed\n", __func__); | |
ba2de7ba | 5835 | goto create_error; |
949c47a0 DW |
5836 | } |
5837 | ||
54c2c1ea DW |
5838 | /* check that all disks are still active before committing |
5839 | * changes. FIXME: could we instead handle this by creating a | |
5840 | * degraded array? That's probably not what the user expects, | |
5841 | * so better to drop this update on the floor. | |
5842 | */ | |
5843 | for (i = 0; i < new_map->num_members; i++) { | |
5844 | dl = serial_to_dl(inf[i].serial, super); | |
5845 | if (!dl) { | |
5846 | dprintf("%s: disk disappeared\n", __func__); | |
ba2de7ba | 5847 | goto create_error; |
54c2c1ea | 5848 | } |
949c47a0 DW |
5849 | } |
5850 | ||
8273f55e | 5851 | super->updates_pending++; |
54c2c1ea DW |
5852 | |
5853 | /* convert spares to members and fixup ord_tbl */ | |
5854 | for (i = 0; i < new_map->num_members; i++) { | |
5855 | dl = serial_to_dl(inf[i].serial, super); | |
5856 | if (dl->index == -1) { | |
5857 | dl->index = mpb->num_disks; | |
5858 | mpb->num_disks++; | |
5859 | dl->disk.status |= CONFIGURED_DISK; | |
5860 | dl->disk.status &= ~SPARE_DISK; | |
5861 | } | |
5862 | set_imsm_ord_tbl_ent(new_map, i, dl->index); | |
5863 | } | |
5864 | ||
ba2de7ba DW |
5865 | dv = update->space; |
5866 | dev = dv->dev; | |
949c47a0 DW |
5867 | update->space = NULL; |
5868 | imsm_copy_dev(dev, &u->dev); | |
ba2de7ba DW |
5869 | dv->index = u->dev_idx; |
5870 | dv->next = super->devlist; | |
5871 | super->devlist = dv; | |
8273f55e | 5872 | mpb->num_raid_devs++; |
8273f55e | 5873 | |
4d1313e9 | 5874 | imsm_update_version_info(super); |
8273f55e | 5875 | break; |
ba2de7ba DW |
5876 | create_error: |
5877 | /* mdmon knows how to release update->space, but not | |
5878 | * ((struct intel_dev *) update->space)->dev | |
5879 | */ | |
5880 | if (update->space) { | |
5881 | dv = update->space; | |
5882 | free(dv->dev); | |
5883 | } | |
8273f55e | 5884 | break; |
e8319a19 | 5885 | } |
33414a01 DW |
5886 | case update_kill_array: { |
5887 | struct imsm_update_kill_array *u = (void *) update->buf; | |
5888 | int victim = u->dev_idx; | |
5889 | struct active_array *a; | |
5890 | struct intel_dev **dp; | |
5891 | struct imsm_dev *dev; | |
5892 | ||
5893 | /* sanity check that we are not affecting the uuid of | |
5894 | * active arrays, or deleting an active array | |
5895 | * | |
5896 | * FIXME when immutable ids are available, but note that | |
5897 | * we'll also need to fixup the invalidated/active | |
5898 | * subarray indexes in mdstat | |
5899 | */ | |
5900 | for (a = st->arrays; a; a = a->next) | |
5901 | if (a->info.container_member >= victim) | |
5902 | break; | |
5903 | /* by definition if mdmon is running at least one array | |
5904 | * is active in the container, so checking | |
5905 | * mpb->num_raid_devs is just extra paranoia | |
5906 | */ | |
5907 | dev = get_imsm_dev(super, victim); | |
5908 | if (a || !dev || mpb->num_raid_devs == 1) { | |
5909 | dprintf("failed to delete subarray-%d\n", victim); | |
5910 | break; | |
5911 | } | |
5912 | ||
5913 | for (dp = &super->devlist; *dp;) | |
f21e18ca | 5914 | if ((*dp)->index == (unsigned)super->current_vol) { |
33414a01 DW |
5915 | *dp = (*dp)->next; |
5916 | } else { | |
f21e18ca | 5917 | if ((*dp)->index > (unsigned)victim) |
33414a01 DW |
5918 | (*dp)->index--; |
5919 | dp = &(*dp)->next; | |
5920 | } | |
5921 | mpb->num_raid_devs--; | |
5922 | super->updates_pending++; | |
5923 | break; | |
5924 | } | |
aa534678 DW |
5925 | case update_rename_array: { |
5926 | struct imsm_update_rename_array *u = (void *) update->buf; | |
5927 | char name[MAX_RAID_SERIAL_LEN+1]; | |
5928 | int target = u->dev_idx; | |
5929 | struct active_array *a; | |
5930 | struct imsm_dev *dev; | |
5931 | ||
5932 | /* sanity check that we are not affecting the uuid of | |
5933 | * an active array | |
5934 | */ | |
5935 | snprintf(name, MAX_RAID_SERIAL_LEN, "%s", (char *) u->name); | |
5936 | name[MAX_RAID_SERIAL_LEN] = '\0'; | |
5937 | for (a = st->arrays; a; a = a->next) | |
5938 | if (a->info.container_member == target) | |
5939 | break; | |
5940 | dev = get_imsm_dev(super, u->dev_idx); | |
5941 | if (a || !dev || !check_name(super, name, 1)) { | |
5942 | dprintf("failed to rename subarray-%d\n", target); | |
5943 | break; | |
5944 | } | |
5945 | ||
cdbe98cd | 5946 | snprintf((char *) dev->volume, MAX_RAID_SERIAL_LEN, "%s", name); |
aa534678 DW |
5947 | super->updates_pending++; |
5948 | break; | |
5949 | } | |
1a64be56 | 5950 | case update_add_remove_disk: { |
43dad3d6 | 5951 | /* we may be able to repair some arrays if disks are |
1a64be56 LM |
5952 | * being added, check teh status of add_remove_disk |
5953 | * if discs has been added. | |
5954 | */ | |
5955 | if (add_remove_disk_update(super)) { | |
43dad3d6 | 5956 | struct active_array *a; |
072b727f DW |
5957 | |
5958 | super->updates_pending++; | |
1a64be56 | 5959 | for (a = st->arrays; a; a = a->next) |
43dad3d6 DW |
5960 | a->check_degraded = 1; |
5961 | } | |
43dad3d6 | 5962 | break; |
e8319a19 | 5963 | } |
1a64be56 LM |
5964 | default: |
5965 | fprintf(stderr, "error: unsuported process update type:" | |
5966 | "(type: %d)\n", type); | |
5967 | } | |
e8319a19 | 5968 | } |
88758e9d | 5969 | |
8273f55e DW |
5970 | static void imsm_prepare_update(struct supertype *st, |
5971 | struct metadata_update *update) | |
5972 | { | |
949c47a0 | 5973 | /** |
4d7b1503 DW |
5974 | * Allocate space to hold new disk entries, raid-device entries or a new |
5975 | * mpb if necessary. The manager synchronously waits for updates to | |
5976 | * complete in the monitor, so new mpb buffers allocated here can be | |
5977 | * integrated by the monitor thread without worrying about live pointers | |
5978 | * in the manager thread. | |
8273f55e | 5979 | */ |
949c47a0 | 5980 | enum imsm_update_type type = *(enum imsm_update_type *) update->buf; |
4d7b1503 DW |
5981 | struct intel_super *super = st->sb; |
5982 | struct imsm_super *mpb = super->anchor; | |
5983 | size_t buf_len; | |
5984 | size_t len = 0; | |
949c47a0 DW |
5985 | |
5986 | switch (type) { | |
78b10e66 | 5987 | case update_reshape_container_disks: { |
d195167d AK |
5988 | /* Every raid device in the container is about to |
5989 | * gain some more devices, and we will enter a | |
5990 | * reconfiguration. | |
5991 | * So each 'imsm_map' will be bigger, and the imsm_vol | |
5992 | * will now hold 2 of them. | |
5993 | * Thus we need new 'struct imsm_dev' allocations sized | |
5994 | * as sizeof_imsm_dev but with more devices in both maps. | |
5995 | */ | |
5996 | struct imsm_update_reshape *u = (void *)update->buf; | |
5997 | struct intel_dev *dl; | |
5998 | void **space_tail = (void**)&update->space_list; | |
5999 | ||
6000 | dprintf("imsm: imsm_prepare_update() for update_reshape\n"); | |
6001 | ||
6002 | for (dl = super->devlist; dl; dl = dl->next) { | |
6003 | int size = sizeof_imsm_dev(dl->dev, 1); | |
6004 | void *s; | |
d677e0b8 AK |
6005 | if (u->new_raid_disks > u->old_raid_disks) |
6006 | size += sizeof(__u32)*2* | |
6007 | (u->new_raid_disks - u->old_raid_disks); | |
d195167d AK |
6008 | s = malloc(size); |
6009 | if (!s) | |
6010 | break; | |
6011 | *space_tail = s; | |
6012 | space_tail = s; | |
6013 | *space_tail = NULL; | |
6014 | } | |
6015 | ||
6016 | len = disks_to_mpb_size(u->new_raid_disks); | |
6017 | dprintf("New anchor length is %llu\n", (unsigned long long)len); | |
78b10e66 N |
6018 | break; |
6019 | } | |
949c47a0 DW |
6020 | case update_create_array: { |
6021 | struct imsm_update_create_array *u = (void *) update->buf; | |
ba2de7ba | 6022 | struct intel_dev *dv; |
54c2c1ea DW |
6023 | struct imsm_dev *dev = &u->dev; |
6024 | struct imsm_map *map = get_imsm_map(dev, 0); | |
6025 | struct dl *dl; | |
6026 | struct disk_info *inf; | |
6027 | int i; | |
6028 | int activate = 0; | |
949c47a0 | 6029 | |
54c2c1ea DW |
6030 | inf = get_disk_info(u); |
6031 | len = sizeof_imsm_dev(dev, 1); | |
ba2de7ba DW |
6032 | /* allocate a new super->devlist entry */ |
6033 | dv = malloc(sizeof(*dv)); | |
6034 | if (dv) { | |
6035 | dv->dev = malloc(len); | |
6036 | if (dv->dev) | |
6037 | update->space = dv; | |
6038 | else { | |
6039 | free(dv); | |
6040 | update->space = NULL; | |
6041 | } | |
6042 | } | |
949c47a0 | 6043 | |
54c2c1ea DW |
6044 | /* count how many spares will be converted to members */ |
6045 | for (i = 0; i < map->num_members; i++) { | |
6046 | dl = serial_to_dl(inf[i].serial, super); | |
6047 | if (!dl) { | |
6048 | /* hmm maybe it failed?, nothing we can do about | |
6049 | * it here | |
6050 | */ | |
6051 | continue; | |
6052 | } | |
6053 | if (count_memberships(dl, super) == 0) | |
6054 | activate++; | |
6055 | } | |
6056 | len += activate * sizeof(struct imsm_disk); | |
949c47a0 DW |
6057 | break; |
6058 | default: | |
6059 | break; | |
6060 | } | |
6061 | } | |
8273f55e | 6062 | |
4d7b1503 DW |
6063 | /* check if we need a larger metadata buffer */ |
6064 | if (super->next_buf) | |
6065 | buf_len = super->next_len; | |
6066 | else | |
6067 | buf_len = super->len; | |
6068 | ||
6069 | if (__le32_to_cpu(mpb->mpb_size) + len > buf_len) { | |
6070 | /* ok we need a larger buf than what is currently allocated | |
6071 | * if this allocation fails process_update will notice that | |
6072 | * ->next_len is set and ->next_buf is NULL | |
6073 | */ | |
6074 | buf_len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + len, 512); | |
6075 | if (super->next_buf) | |
6076 | free(super->next_buf); | |
6077 | ||
6078 | super->next_len = buf_len; | |
1f45a8ad DW |
6079 | if (posix_memalign(&super->next_buf, 512, buf_len) == 0) |
6080 | memset(super->next_buf, 0, buf_len); | |
6081 | else | |
4d7b1503 DW |
6082 | super->next_buf = NULL; |
6083 | } | |
8273f55e DW |
6084 | } |
6085 | ||
ae6aad82 | 6086 | /* must be called while manager is quiesced */ |
f21e18ca | 6087 | static void imsm_delete(struct intel_super *super, struct dl **dlp, unsigned index) |
ae6aad82 DW |
6088 | { |
6089 | struct imsm_super *mpb = super->anchor; | |
ae6aad82 DW |
6090 | struct dl *iter; |
6091 | struct imsm_dev *dev; | |
6092 | struct imsm_map *map; | |
24565c9a DW |
6093 | int i, j, num_members; |
6094 | __u32 ord; | |
ae6aad82 | 6095 | |
24565c9a DW |
6096 | dprintf("%s: deleting device[%d] from imsm_super\n", |
6097 | __func__, index); | |
ae6aad82 DW |
6098 | |
6099 | /* shift all indexes down one */ | |
6100 | for (iter = super->disks; iter; iter = iter->next) | |
f21e18ca | 6101 | if (iter->index > (int)index) |
ae6aad82 | 6102 | iter->index--; |
47ee5a45 | 6103 | for (iter = super->missing; iter; iter = iter->next) |
f21e18ca | 6104 | if (iter->index > (int)index) |
47ee5a45 | 6105 | iter->index--; |
ae6aad82 DW |
6106 | |
6107 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
6108 | dev = get_imsm_dev(super, i); | |
6109 | map = get_imsm_map(dev, 0); | |
24565c9a DW |
6110 | num_members = map->num_members; |
6111 | for (j = 0; j < num_members; j++) { | |
6112 | /* update ord entries being careful not to propagate | |
6113 | * ord-flags to the first map | |
6114 | */ | |
98130f40 | 6115 | ord = get_imsm_ord_tbl_ent(dev, j, -1); |
ae6aad82 | 6116 | |
24565c9a DW |
6117 | if (ord_to_idx(ord) <= index) |
6118 | continue; | |
ae6aad82 | 6119 | |
24565c9a DW |
6120 | map = get_imsm_map(dev, 0); |
6121 | set_imsm_ord_tbl_ent(map, j, ord_to_idx(ord - 1)); | |
6122 | map = get_imsm_map(dev, 1); | |
6123 | if (map) | |
6124 | set_imsm_ord_tbl_ent(map, j, ord - 1); | |
ae6aad82 DW |
6125 | } |
6126 | } | |
6127 | ||
6128 | mpb->num_disks--; | |
6129 | super->updates_pending++; | |
24565c9a DW |
6130 | if (*dlp) { |
6131 | struct dl *dl = *dlp; | |
6132 | ||
6133 | *dlp = (*dlp)->next; | |
6134 | __free_imsm_disk(dl); | |
6135 | } | |
ae6aad82 | 6136 | } |
0e600426 | 6137 | #endif /* MDASSEMBLE */ |
ae6aad82 | 6138 | |
2cda7640 ML |
6139 | static char disk_by_path[] = "/dev/disk/by-path/"; |
6140 | ||
6141 | static const char *imsm_get_disk_controller_domain(const char *path) | |
6142 | { | |
6143 | struct sys_dev *list, *hba = NULL; | |
6144 | char disk_path[PATH_MAX]; | |
6145 | int ahci = 0; | |
6146 | char *dpath = NULL; | |
6147 | ||
6148 | list = find_driver_devices("pci", "ahci"); | |
6149 | for (hba = list; hba; hba = hba->next) | |
6150 | if (devpath_to_vendor(hba->path) == 0x8086) | |
6151 | break; | |
6152 | ||
6153 | if (hba) { | |
6154 | struct stat st; | |
6155 | ||
6156 | strncpy(disk_path, disk_by_path, PATH_MAX - 1); | |
6157 | strncat(disk_path, path, PATH_MAX - strlen(disk_path) - 1); | |
6158 | if (stat(disk_path, &st) == 0) { | |
6159 | dpath = devt_to_devpath(st.st_rdev); | |
6160 | if (dpath) | |
6161 | ahci = path_attached_to_hba(dpath, hba->path); | |
6162 | } | |
6163 | } | |
6164 | dprintf("path: %s(%s) hba: %s attached: %d\n", | |
6165 | path, dpath, (hba) ? hba->path : "NULL", ahci); | |
6166 | free_sys_dev(&list); | |
6167 | if (ahci) | |
6168 | return "ahci"; | |
6169 | else | |
6170 | return NULL; | |
6171 | } | |
6172 | ||
78b10e66 N |
6173 | static int imsm_find_array_minor_by_subdev(int subdev, int container, int *minor) |
6174 | { | |
6175 | char subdev_name[20]; | |
6176 | struct mdstat_ent *mdstat; | |
6177 | ||
6178 | sprintf(subdev_name, "%d", subdev); | |
6179 | mdstat = mdstat_by_subdev(subdev_name, container); | |
6180 | if (!mdstat) | |
6181 | return -1; | |
6182 | ||
6183 | *minor = mdstat->devnum; | |
6184 | free_mdstat(mdstat); | |
6185 | return 0; | |
6186 | } | |
6187 | ||
6188 | static int imsm_reshape_is_allowed_on_container(struct supertype *st, | |
6189 | struct geo_params *geo, | |
6190 | int *old_raid_disks) | |
6191 | { | |
6192 | int ret_val = 0; | |
6193 | struct mdinfo *info, *member; | |
6194 | int devices_that_can_grow = 0; | |
6195 | ||
6196 | dprintf("imsm: imsm_reshape_is_allowed_on_container(ENTER): " | |
6197 | "st->devnum = (%i)\n", | |
6198 | st->devnum); | |
6199 | ||
6200 | if (geo->size != -1 || | |
6201 | geo->level != UnSet || | |
6202 | geo->layout != UnSet || | |
6203 | geo->chunksize != 0 || | |
6204 | geo->raid_disks == UnSet) { | |
6205 | dprintf("imsm: Container operation is allowed for " | |
6206 | "raid disks number change only.\n"); | |
6207 | return ret_val; | |
6208 | } | |
6209 | ||
6210 | info = container_content_imsm(st, NULL); | |
6211 | for (member = info; member; member = member->next) { | |
6212 | int result; | |
6213 | int minor; | |
6214 | ||
6215 | dprintf("imsm: checking device_num: %i\n", | |
6216 | member->container_member); | |
6217 | ||
6218 | if (geo->raid_disks < member->array.raid_disks) { | |
6219 | /* we work on container for Online Capacity Expansion | |
6220 | * only so raid_disks has to grow | |
6221 | */ | |
6222 | dprintf("imsm: for container operation raid disks " | |
6223 | "increase is required\n"); | |
6224 | break; | |
6225 | } | |
6226 | ||
6227 | if ((info->array.level != 0) && | |
6228 | (info->array.level != 5)) { | |
6229 | /* we cannot use this container with other raid level | |
6230 | */ | |
690aae1a | 6231 | dprintf("imsm: for container operation wrong" |
78b10e66 N |
6232 | " raid level (%i) detected\n", |
6233 | info->array.level); | |
6234 | break; | |
6235 | } else { | |
6236 | /* check for platform support | |
6237 | * for this raid level configuration | |
6238 | */ | |
6239 | struct intel_super *super = st->sb; | |
6240 | if (!is_raid_level_supported(super->orom, | |
6241 | member->array.level, | |
6242 | geo->raid_disks)) { | |
690aae1a | 6243 | dprintf("platform does not support raid%d with" |
78b10e66 N |
6244 | " %d disk%s\n", |
6245 | info->array.level, | |
6246 | geo->raid_disks, | |
6247 | geo->raid_disks > 1 ? "s" : ""); | |
6248 | break; | |
6249 | } | |
6250 | } | |
6251 | ||
6252 | if (*old_raid_disks && | |
6253 | info->array.raid_disks != *old_raid_disks) | |
6254 | break; | |
6255 | *old_raid_disks = info->array.raid_disks; | |
6256 | ||
6257 | /* All raid5 and raid0 volumes in container | |
6258 | * have to be ready for Online Capacity Expansion | |
6259 | * so they need to be assembled. We have already | |
6260 | * checked that no recovery etc is happening. | |
6261 | */ | |
6262 | result = imsm_find_array_minor_by_subdev(member->container_member, | |
6263 | st->container_dev, | |
6264 | &minor); | |
6265 | if (result < 0) { | |
6266 | dprintf("imsm: cannot find array\n"); | |
6267 | break; | |
6268 | } | |
6269 | devices_that_can_grow++; | |
6270 | } | |
6271 | sysfs_free(info); | |
6272 | if (!member && devices_that_can_grow) | |
6273 | ret_val = 1; | |
6274 | ||
6275 | if (ret_val) | |
6276 | dprintf("\tContainer operation allowed\n"); | |
6277 | else | |
6278 | dprintf("\tError: %i\n", ret_val); | |
6279 | ||
6280 | return ret_val; | |
6281 | } | |
6282 | ||
6283 | /* Function: get_spares_for_grow | |
6284 | * Description: Allocates memory and creates list of spare devices | |
6285 | * avaliable in container. Checks if spare drive size is acceptable. | |
6286 | * Parameters: Pointer to the supertype structure | |
6287 | * Returns: Pointer to the list of spare devices (mdinfo structure) on success, | |
6288 | * NULL if fail | |
6289 | */ | |
6290 | static struct mdinfo *get_spares_for_grow(struct supertype *st) | |
6291 | { | |
78b10e66 | 6292 | unsigned long long min_size = min_acceptable_spare_size_imsm(st); |
326727d9 | 6293 | return container_choose_spares(st, min_size, NULL, NULL, NULL, 0); |
78b10e66 N |
6294 | } |
6295 | ||
6296 | /****************************************************************************** | |
6297 | * function: imsm_create_metadata_update_for_reshape | |
6298 | * Function creates update for whole IMSM container. | |
6299 | * | |
6300 | ******************************************************************************/ | |
6301 | static int imsm_create_metadata_update_for_reshape( | |
6302 | struct supertype *st, | |
6303 | struct geo_params *geo, | |
6304 | int old_raid_disks, | |
6305 | struct imsm_update_reshape **updatep) | |
6306 | { | |
6307 | struct intel_super *super = st->sb; | |
6308 | struct imsm_super *mpb = super->anchor; | |
6309 | int update_memory_size = 0; | |
6310 | struct imsm_update_reshape *u = NULL; | |
6311 | struct mdinfo *spares = NULL; | |
6312 | int i; | |
6313 | int delta_disks = 0; | |
6314 | ||
6315 | dprintf("imsm_update_metadata_for_reshape(enter) raid_disks = %i\n", | |
6316 | geo->raid_disks); | |
6317 | ||
6318 | delta_disks = geo->raid_disks - old_raid_disks; | |
6319 | ||
6320 | /* size of all update data without anchor */ | |
6321 | update_memory_size = sizeof(struct imsm_update_reshape); | |
6322 | ||
6323 | /* now add space for spare disks that we need to add. */ | |
6324 | update_memory_size += sizeof(u->new_disks[0]) * (delta_disks - 1); | |
6325 | ||
6326 | u = calloc(1, update_memory_size); | |
6327 | if (u == NULL) { | |
6328 | dprintf("error: " | |
6329 | "cannot get memory for imsm_update_reshape update\n"); | |
6330 | return 0; | |
6331 | } | |
6332 | u->type = update_reshape_container_disks; | |
6333 | u->old_raid_disks = old_raid_disks; | |
6334 | u->new_raid_disks = geo->raid_disks; | |
6335 | ||
6336 | /* now get spare disks list | |
6337 | */ | |
6338 | spares = get_spares_for_grow(st); | |
6339 | ||
6340 | if (spares == NULL | |
6341 | || delta_disks > spares->array.spare_disks) { | |
6342 | dprintf("imsm: ERROR: Cannot get spare devices.\n"); | |
6343 | goto abort; | |
6344 | } | |
6345 | ||
6346 | /* we have got spares | |
6347 | * update disk list in imsm_disk list table in anchor | |
6348 | */ | |
6349 | dprintf("imsm: %i spares are available.\n\n", | |
6350 | spares->array.spare_disks); | |
6351 | ||
6352 | for (i = 0; i < delta_disks; i++) { | |
6353 | struct mdinfo *dev = spares->devs; | |
6354 | struct dl *dl; | |
6355 | ||
6356 | u->new_disks[i] = makedev(dev->disk.major, | |
6357 | dev->disk.minor); | |
6358 | dl = get_disk_super(super, dev->disk.major, dev->disk.minor); | |
6359 | dl->index = mpb->num_disks++; | |
6360 | } | |
6361 | /* Now update the metadata so that container_content will find | |
6362 | * the new devices | |
6363 | */ | |
6364 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
6365 | int d; | |
6366 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
6367 | struct imsm_map *map = get_imsm_map(dev, 0); | |
6368 | map->num_members = geo->raid_disks; | |
6369 | for (d = 0; d < delta_disks; d++) { | |
6370 | set_imsm_ord_tbl_ent(map, old_raid_disks + d, | |
6371 | mpb->num_disks - delta_disks + d); | |
6372 | } | |
6373 | } | |
6374 | ||
6375 | abort: | |
6376 | /* free spares | |
6377 | */ | |
6378 | sysfs_free(spares); | |
6379 | ||
d677e0b8 | 6380 | dprintf("imsm: reshape update preparation :"); |
78b10e66 | 6381 | if (i == delta_disks) { |
d677e0b8 | 6382 | dprintf(" OK\n"); |
78b10e66 N |
6383 | *updatep = u; |
6384 | return update_memory_size; | |
6385 | } | |
6386 | free(u); | |
d677e0b8 | 6387 | dprintf(" Error\n"); |
78b10e66 N |
6388 | |
6389 | return 0; | |
6390 | } | |
6391 | ||
6392 | ||
6393 | static int imsm_reshape_super(struct supertype *st, long long size, int level, | |
6394 | int layout, int chunksize, int raid_disks, | |
690aae1a | 6395 | char *backup, char *dev, int verbose) |
78b10e66 N |
6396 | { |
6397 | /* currently we only support increasing the number of devices | |
6398 | * for a container. This increases the number of device for each | |
6399 | * member array. They must all be RAID0 or RAID5. | |
6400 | */ | |
6401 | ||
6402 | int ret_val = 1; | |
6403 | struct geo_params geo; | |
6404 | ||
6405 | dprintf("imsm: reshape_super called.\n"); | |
6406 | ||
6407 | memset(&geo, sizeof(struct geo_params), 0); | |
6408 | ||
6409 | geo.dev_name = dev; | |
6410 | geo.size = size; | |
6411 | geo.level = level; | |
6412 | geo.layout = layout; | |
6413 | geo.chunksize = chunksize; | |
6414 | geo.raid_disks = raid_disks; | |
6415 | ||
6416 | dprintf("\tfor level : %i\n", geo.level); | |
6417 | dprintf("\tfor raid_disks : %i\n", geo.raid_disks); | |
6418 | ||
6419 | if (experimental() == 0) | |
6420 | return ret_val; | |
6421 | ||
6422 | /* verify reshape conditions | |
6423 | * on container level we can only increase number of devices. */ | |
6424 | if (st->container_dev == st->devnum) { | |
6425 | /* check for delta_disks > 0 | |
6426 | *and supported raid levels 0 and 5 only in container */ | |
6427 | int old_raid_disks = 0; | |
6428 | if (imsm_reshape_is_allowed_on_container( | |
6429 | st, &geo, &old_raid_disks)) { | |
6430 | struct imsm_update_reshape *u = NULL; | |
6431 | int len; | |
6432 | ||
6433 | len = imsm_create_metadata_update_for_reshape( | |
6434 | st, &geo, old_raid_disks, &u); | |
6435 | ||
6436 | if (len) { | |
6437 | ret_val = 0; | |
6438 | append_metadata_update(st, u, len); | |
6439 | } else | |
690aae1a | 6440 | fprintf(stderr, Name "imsm: Cannot prepare " |
78b10e66 N |
6441 | "update\n"); |
6442 | } else | |
690aae1a | 6443 | fprintf(stderr, Name "imsm: Operation is not allowed " |
78b10e66 N |
6444 | "on this container\n"); |
6445 | } else | |
690aae1a | 6446 | fprintf(stderr, Name "imsm: not a container operation\n"); |
78b10e66 N |
6447 | |
6448 | dprintf("imsm: reshape_super Exit code = %i\n", ret_val); | |
6449 | return ret_val; | |
6450 | } | |
2cda7640 | 6451 | |
cdddbdbc DW |
6452 | struct superswitch super_imsm = { |
6453 | #ifndef MDASSEMBLE | |
6454 | .examine_super = examine_super_imsm, | |
6455 | .brief_examine_super = brief_examine_super_imsm, | |
4737ae25 | 6456 | .brief_examine_subarrays = brief_examine_subarrays_imsm, |
9d84c8ea | 6457 | .export_examine_super = export_examine_super_imsm, |
cdddbdbc DW |
6458 | .detail_super = detail_super_imsm, |
6459 | .brief_detail_super = brief_detail_super_imsm, | |
bf5a934a | 6460 | .write_init_super = write_init_super_imsm, |
0e600426 N |
6461 | .validate_geometry = validate_geometry_imsm, |
6462 | .add_to_super = add_to_super_imsm, | |
1a64be56 | 6463 | .remove_from_super = remove_from_super_imsm, |
d665cc31 | 6464 | .detail_platform = detail_platform_imsm, |
33414a01 | 6465 | .kill_subarray = kill_subarray_imsm, |
aa534678 | 6466 | .update_subarray = update_subarray_imsm, |
2b959fbf | 6467 | .load_container = load_container_imsm, |
cdddbdbc DW |
6468 | #endif |
6469 | .match_home = match_home_imsm, | |
6470 | .uuid_from_super= uuid_from_super_imsm, | |
6471 | .getinfo_super = getinfo_super_imsm, | |
5c4cd5da | 6472 | .getinfo_super_disks = getinfo_super_disks_imsm, |
cdddbdbc DW |
6473 | .update_super = update_super_imsm, |
6474 | ||
6475 | .avail_size = avail_size_imsm, | |
80e7f8c3 | 6476 | .min_acceptable_spare_size = min_acceptable_spare_size_imsm, |
cdddbdbc DW |
6477 | |
6478 | .compare_super = compare_super_imsm, | |
6479 | ||
6480 | .load_super = load_super_imsm, | |
bf5a934a | 6481 | .init_super = init_super_imsm, |
e683ca88 | 6482 | .store_super = store_super_imsm, |
cdddbdbc DW |
6483 | .free_super = free_super_imsm, |
6484 | .match_metadata_desc = match_metadata_desc_imsm, | |
bf5a934a | 6485 | .container_content = container_content_imsm, |
30f58b22 | 6486 | .default_geometry = default_geometry_imsm, |
2cda7640 | 6487 | .get_disk_controller_domain = imsm_get_disk_controller_domain, |
78b10e66 | 6488 | .reshape_super = imsm_reshape_super, |
cdddbdbc | 6489 | |
cdddbdbc | 6490 | .external = 1, |
4cce4069 | 6491 | .name = "imsm", |
845dea95 | 6492 | |
0e600426 | 6493 | #ifndef MDASSEMBLE |
845dea95 NB |
6494 | /* for mdmon */ |
6495 | .open_new = imsm_open_new, | |
ed9d66aa | 6496 | .set_array_state= imsm_set_array_state, |
845dea95 NB |
6497 | .set_disk = imsm_set_disk, |
6498 | .sync_metadata = imsm_sync_metadata, | |
88758e9d | 6499 | .activate_spare = imsm_activate_spare, |
e8319a19 | 6500 | .process_update = imsm_process_update, |
8273f55e | 6501 | .prepare_update = imsm_prepare_update, |
0e600426 | 6502 | #endif /* MDASSEMBLE */ |
cdddbdbc | 6503 | }; |