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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 | ||
7eef0453 DW |
512 | static __u32 get_imsm_ord_tbl_ent(struct imsm_dev *dev, int slot) |
513 | { | |
514 | struct imsm_map *map; | |
515 | ||
516 | if (dev->vol.migr_state) | |
7eef0453 | 517 | map = get_imsm_map(dev, 1); |
fb9bf0d3 DW |
518 | else |
519 | map = get_imsm_map(dev, 0); | |
7eef0453 | 520 | |
ff077194 DW |
521 | /* top byte identifies disk under rebuild */ |
522 | return __le32_to_cpu(map->disk_ord_tbl[slot]); | |
523 | } | |
524 | ||
525 | #define ord_to_idx(ord) (((ord) << 8) >> 8) | |
526 | static __u32 get_imsm_disk_idx(struct imsm_dev *dev, int slot) | |
527 | { | |
528 | __u32 ord = get_imsm_ord_tbl_ent(dev, slot); | |
529 | ||
530 | return ord_to_idx(ord); | |
7eef0453 DW |
531 | } |
532 | ||
be73972f DW |
533 | static void set_imsm_ord_tbl_ent(struct imsm_map *map, int slot, __u32 ord) |
534 | { | |
535 | map->disk_ord_tbl[slot] = __cpu_to_le32(ord); | |
536 | } | |
537 | ||
f21e18ca | 538 | static int get_imsm_disk_slot(struct imsm_map *map, unsigned idx) |
620b1713 DW |
539 | { |
540 | int slot; | |
541 | __u32 ord; | |
542 | ||
543 | for (slot = 0; slot < map->num_members; slot++) { | |
544 | ord = __le32_to_cpu(map->disk_ord_tbl[slot]); | |
545 | if (ord_to_idx(ord) == idx) | |
546 | return slot; | |
547 | } | |
548 | ||
549 | return -1; | |
550 | } | |
551 | ||
cdddbdbc DW |
552 | static int get_imsm_raid_level(struct imsm_map *map) |
553 | { | |
554 | if (map->raid_level == 1) { | |
555 | if (map->num_members == 2) | |
556 | return 1; | |
557 | else | |
558 | return 10; | |
559 | } | |
560 | ||
561 | return map->raid_level; | |
562 | } | |
563 | ||
c2c087e6 DW |
564 | static int cmp_extent(const void *av, const void *bv) |
565 | { | |
566 | const struct extent *a = av; | |
567 | const struct extent *b = bv; | |
568 | if (a->start < b->start) | |
569 | return -1; | |
570 | if (a->start > b->start) | |
571 | return 1; | |
572 | return 0; | |
573 | } | |
574 | ||
0dcecb2e | 575 | static int count_memberships(struct dl *dl, struct intel_super *super) |
c2c087e6 | 576 | { |
c2c087e6 | 577 | int memberships = 0; |
620b1713 | 578 | int i; |
c2c087e6 | 579 | |
949c47a0 DW |
580 | for (i = 0; i < super->anchor->num_raid_devs; i++) { |
581 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
a965f303 | 582 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2c087e6 | 583 | |
620b1713 DW |
584 | if (get_imsm_disk_slot(map, dl->index) >= 0) |
585 | memberships++; | |
c2c087e6 | 586 | } |
0dcecb2e DW |
587 | |
588 | return memberships; | |
589 | } | |
590 | ||
591 | static struct extent *get_extents(struct intel_super *super, struct dl *dl) | |
592 | { | |
593 | /* find a list of used extents on the given physical device */ | |
594 | struct extent *rv, *e; | |
620b1713 | 595 | int i; |
0dcecb2e DW |
596 | int memberships = count_memberships(dl, super); |
597 | __u32 reservation = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
598 | ||
c2c087e6 DW |
599 | rv = malloc(sizeof(struct extent) * (memberships + 1)); |
600 | if (!rv) | |
601 | return NULL; | |
602 | e = rv; | |
603 | ||
949c47a0 DW |
604 | for (i = 0; i < super->anchor->num_raid_devs; i++) { |
605 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
a965f303 | 606 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2c087e6 | 607 | |
620b1713 DW |
608 | if (get_imsm_disk_slot(map, dl->index) >= 0) { |
609 | e->start = __le32_to_cpu(map->pba_of_lba0); | |
610 | e->size = __le32_to_cpu(map->blocks_per_member); | |
611 | e++; | |
c2c087e6 DW |
612 | } |
613 | } | |
614 | qsort(rv, memberships, sizeof(*rv), cmp_extent); | |
615 | ||
14e8215b DW |
616 | /* determine the start of the metadata |
617 | * when no raid devices are defined use the default | |
618 | * ...otherwise allow the metadata to truncate the value | |
619 | * as is the case with older versions of imsm | |
620 | */ | |
621 | if (memberships) { | |
622 | struct extent *last = &rv[memberships - 1]; | |
623 | __u32 remainder; | |
624 | ||
625 | remainder = __le32_to_cpu(dl->disk.total_blocks) - | |
626 | (last->start + last->size); | |
dda5855f DW |
627 | /* round down to 1k block to satisfy precision of the kernel |
628 | * 'size' interface | |
629 | */ | |
630 | remainder &= ~1UL; | |
631 | /* make sure remainder is still sane */ | |
f21e18ca | 632 | if (remainder < (unsigned)ROUND_UP(super->len, 512) >> 9) |
dda5855f | 633 | remainder = ROUND_UP(super->len, 512) >> 9; |
14e8215b DW |
634 | if (reservation > remainder) |
635 | reservation = remainder; | |
636 | } | |
637 | e->start = __le32_to_cpu(dl->disk.total_blocks) - reservation; | |
c2c087e6 DW |
638 | e->size = 0; |
639 | return rv; | |
640 | } | |
641 | ||
14e8215b DW |
642 | /* try to determine how much space is reserved for metadata from |
643 | * the last get_extents() entry, otherwise fallback to the | |
644 | * default | |
645 | */ | |
646 | static __u32 imsm_reserved_sectors(struct intel_super *super, struct dl *dl) | |
647 | { | |
648 | struct extent *e; | |
649 | int i; | |
650 | __u32 rv; | |
651 | ||
652 | /* for spares just return a minimal reservation which will grow | |
653 | * once the spare is picked up by an array | |
654 | */ | |
655 | if (dl->index == -1) | |
656 | return MPB_SECTOR_CNT; | |
657 | ||
658 | e = get_extents(super, dl); | |
659 | if (!e) | |
660 | return MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
661 | ||
662 | /* scroll to last entry */ | |
663 | for (i = 0; e[i].size; i++) | |
664 | continue; | |
665 | ||
666 | rv = __le32_to_cpu(dl->disk.total_blocks) - e[i].start; | |
667 | ||
668 | free(e); | |
669 | ||
670 | return rv; | |
671 | } | |
672 | ||
25ed7e59 DW |
673 | static int is_spare(struct imsm_disk *disk) |
674 | { | |
675 | return (disk->status & SPARE_DISK) == SPARE_DISK; | |
676 | } | |
677 | ||
678 | static int is_configured(struct imsm_disk *disk) | |
679 | { | |
680 | return (disk->status & CONFIGURED_DISK) == CONFIGURED_DISK; | |
681 | } | |
682 | ||
683 | static int is_failed(struct imsm_disk *disk) | |
684 | { | |
685 | return (disk->status & FAILED_DISK) == FAILED_DISK; | |
686 | } | |
687 | ||
80e7f8c3 AC |
688 | /* Return minimum size of a spare that can be used in this array*/ |
689 | static unsigned long long min_acceptable_spare_size_imsm(struct supertype *st) | |
690 | { | |
691 | struct intel_super *super = st->sb; | |
692 | struct dl *dl; | |
693 | struct extent *e; | |
694 | int i; | |
695 | unsigned long long rv = 0; | |
696 | ||
697 | if (!super) | |
698 | return rv; | |
699 | /* find first active disk in array */ | |
700 | dl = super->disks; | |
701 | while (dl && (is_failed(&dl->disk) || dl->index == -1)) | |
702 | dl = dl->next; | |
703 | if (!dl) | |
704 | return rv; | |
705 | /* find last lba used by subarrays */ | |
706 | e = get_extents(super, dl); | |
707 | if (!e) | |
708 | return rv; | |
709 | for (i = 0; e[i].size; i++) | |
710 | continue; | |
711 | if (i > 0) | |
712 | rv = e[i-1].start + e[i-1].size; | |
713 | free(e); | |
714 | /* add the amount of space needed for metadata */ | |
715 | rv = rv + MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
716 | return rv * 512; | |
717 | } | |
718 | ||
1799c9e8 | 719 | #ifndef MDASSEMBLE |
1e5c6983 DW |
720 | static __u64 blocks_per_migr_unit(struct imsm_dev *dev); |
721 | ||
44470971 | 722 | static void print_imsm_dev(struct imsm_dev *dev, char *uuid, int disk_idx) |
cdddbdbc DW |
723 | { |
724 | __u64 sz; | |
0d80bb2f | 725 | int slot, i; |
a965f303 | 726 | struct imsm_map *map = get_imsm_map(dev, 0); |
b10b37b8 | 727 | __u32 ord; |
cdddbdbc DW |
728 | |
729 | printf("\n"); | |
1e7bc0ed | 730 | printf("[%.16s]:\n", dev->volume); |
44470971 | 731 | printf(" UUID : %s\n", uuid); |
cdddbdbc DW |
732 | printf(" RAID Level : %d\n", get_imsm_raid_level(map)); |
733 | printf(" Members : %d\n", map->num_members); | |
0d80bb2f DW |
734 | printf(" Slots : ["); |
735 | for (i = 0; i < map->num_members; i++) { | |
736 | ord = get_imsm_ord_tbl_ent(dev, i); | |
737 | printf("%s", ord & IMSM_ORD_REBUILD ? "_" : "U"); | |
738 | } | |
739 | printf("]\n"); | |
620b1713 DW |
740 | slot = get_imsm_disk_slot(map, disk_idx); |
741 | if (slot >= 0) { | |
b10b37b8 DW |
742 | ord = get_imsm_ord_tbl_ent(dev, slot); |
743 | printf(" This Slot : %d%s\n", slot, | |
744 | ord & IMSM_ORD_REBUILD ? " (out-of-sync)" : ""); | |
745 | } else | |
cdddbdbc DW |
746 | printf(" This Slot : ?\n"); |
747 | sz = __le32_to_cpu(dev->size_high); | |
748 | sz <<= 32; | |
749 | sz += __le32_to_cpu(dev->size_low); | |
750 | printf(" Array Size : %llu%s\n", (unsigned long long)sz, | |
751 | human_size(sz * 512)); | |
752 | sz = __le32_to_cpu(map->blocks_per_member); | |
753 | printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz, | |
754 | human_size(sz * 512)); | |
755 | printf(" Sector Offset : %u\n", | |
756 | __le32_to_cpu(map->pba_of_lba0)); | |
757 | printf(" Num Stripes : %u\n", | |
758 | __le32_to_cpu(map->num_data_stripes)); | |
759 | printf(" Chunk Size : %u KiB\n", | |
760 | __le16_to_cpu(map->blocks_per_strip) / 2); | |
761 | printf(" Reserved : %d\n", __le32_to_cpu(dev->reserved_blocks)); | |
8655a7b1 | 762 | printf(" Migrate State : "); |
1484e727 DW |
763 | if (dev->vol.migr_state) { |
764 | if (migr_type(dev) == MIGR_INIT) | |
8655a7b1 | 765 | printf("initialize\n"); |
1484e727 | 766 | else if (migr_type(dev) == MIGR_REBUILD) |
8655a7b1 | 767 | printf("rebuild\n"); |
1484e727 | 768 | else if (migr_type(dev) == MIGR_VERIFY) |
8655a7b1 | 769 | printf("check\n"); |
1484e727 | 770 | else if (migr_type(dev) == MIGR_GEN_MIGR) |
8655a7b1 | 771 | printf("general migration\n"); |
1484e727 | 772 | else if (migr_type(dev) == MIGR_STATE_CHANGE) |
8655a7b1 | 773 | printf("state change\n"); |
1484e727 | 774 | else if (migr_type(dev) == MIGR_REPAIR) |
8655a7b1 | 775 | printf("repair\n"); |
1484e727 | 776 | else |
8655a7b1 DW |
777 | printf("<unknown:%d>\n", migr_type(dev)); |
778 | } else | |
779 | printf("idle\n"); | |
3393c6af DW |
780 | printf(" Map State : %s", map_state_str[map->map_state]); |
781 | if (dev->vol.migr_state) { | |
782 | struct imsm_map *map = get_imsm_map(dev, 1); | |
1e5c6983 | 783 | |
b10b37b8 | 784 | printf(" <-- %s", map_state_str[map->map_state]); |
1e5c6983 DW |
785 | printf("\n Checkpoint : %u (%llu)", |
786 | __le32_to_cpu(dev->vol.curr_migr_unit), | |
94fcb80a | 787 | (unsigned long long)blocks_per_migr_unit(dev)); |
3393c6af DW |
788 | } |
789 | printf("\n"); | |
cdddbdbc | 790 | printf(" Dirty State : %s\n", dev->vol.dirty ? "dirty" : "clean"); |
cdddbdbc DW |
791 | } |
792 | ||
14e8215b | 793 | static void print_imsm_disk(struct imsm_super *mpb, int index, __u32 reserved) |
cdddbdbc | 794 | { |
949c47a0 | 795 | struct imsm_disk *disk = __get_imsm_disk(mpb, index); |
1f24f035 | 796 | char str[MAX_RAID_SERIAL_LEN + 1]; |
cdddbdbc DW |
797 | __u64 sz; |
798 | ||
d362da3d | 799 | if (index < 0 || !disk) |
e9d82038 DW |
800 | return; |
801 | ||
cdddbdbc | 802 | printf("\n"); |
1f24f035 | 803 | snprintf(str, MAX_RAID_SERIAL_LEN + 1, "%s", disk->serial); |
cdddbdbc | 804 | printf(" Disk%02d Serial : %s\n", index, str); |
25ed7e59 DW |
805 | printf(" State :%s%s%s\n", is_spare(disk) ? " spare" : "", |
806 | is_configured(disk) ? " active" : "", | |
807 | is_failed(disk) ? " failed" : ""); | |
cdddbdbc | 808 | printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id)); |
14e8215b | 809 | sz = __le32_to_cpu(disk->total_blocks) - reserved; |
cdddbdbc DW |
810 | printf(" Usable Size : %llu%s\n", (unsigned long long)sz, |
811 | human_size(sz * 512)); | |
812 | } | |
813 | ||
a5d85af7 | 814 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info, char *map); |
44470971 | 815 | |
cdddbdbc DW |
816 | static void examine_super_imsm(struct supertype *st, char *homehost) |
817 | { | |
818 | struct intel_super *super = st->sb; | |
949c47a0 | 819 | struct imsm_super *mpb = super->anchor; |
cdddbdbc DW |
820 | char str[MAX_SIGNATURE_LENGTH]; |
821 | int i; | |
27fd6274 DW |
822 | struct mdinfo info; |
823 | char nbuf[64]; | |
cdddbdbc | 824 | __u32 sum; |
14e8215b | 825 | __u32 reserved = imsm_reserved_sectors(super, super->disks); |
94827db3 | 826 | struct dl *dl; |
27fd6274 | 827 | |
cdddbdbc DW |
828 | snprintf(str, MPB_SIG_LEN, "%s", mpb->sig); |
829 | printf(" Magic : %s\n", str); | |
830 | snprintf(str, strlen(MPB_VERSION_RAID0), "%s", get_imsm_version(mpb)); | |
831 | printf(" Version : %s\n", get_imsm_version(mpb)); | |
148acb7b | 832 | printf(" Orig Family : %08x\n", __le32_to_cpu(mpb->orig_family_num)); |
cdddbdbc DW |
833 | printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num)); |
834 | printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num)); | |
a5d85af7 | 835 | getinfo_super_imsm(st, &info, NULL); |
ae2bfd4e | 836 | fname_from_uuid(st, &info, nbuf, ':'); |
27fd6274 | 837 | printf(" UUID : %s\n", nbuf + 5); |
cdddbdbc DW |
838 | sum = __le32_to_cpu(mpb->check_sum); |
839 | printf(" Checksum : %08x %s\n", sum, | |
949c47a0 | 840 | __gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect"); |
87eb16df | 841 | printf(" MPB Sectors : %d\n", mpb_sectors(mpb)); |
cdddbdbc DW |
842 | printf(" Disks : %d\n", mpb->num_disks); |
843 | printf(" RAID Devices : %d\n", mpb->num_raid_devs); | |
14e8215b | 844 | print_imsm_disk(mpb, super->disks->index, reserved); |
604b746f JD |
845 | if (super->bbm_log) { |
846 | struct bbm_log *log = super->bbm_log; | |
847 | ||
848 | printf("\n"); | |
849 | printf("Bad Block Management Log:\n"); | |
850 | printf(" Log Size : %d\n", __le32_to_cpu(mpb->bbm_log_size)); | |
851 | printf(" Signature : %x\n", __le32_to_cpu(log->signature)); | |
852 | printf(" Entry Count : %d\n", __le32_to_cpu(log->entry_count)); | |
853 | printf(" Spare Blocks : %d\n", __le32_to_cpu(log->reserved_spare_block_count)); | |
13a3b65d N |
854 | printf(" First Spare : %llx\n", |
855 | (unsigned long long) __le64_to_cpu(log->first_spare_lba)); | |
604b746f | 856 | } |
44470971 DW |
857 | for (i = 0; i < mpb->num_raid_devs; i++) { |
858 | struct mdinfo info; | |
859 | struct imsm_dev *dev = __get_imsm_dev(mpb, i); | |
860 | ||
861 | super->current_vol = i; | |
a5d85af7 | 862 | getinfo_super_imsm(st, &info, NULL); |
ae2bfd4e | 863 | fname_from_uuid(st, &info, nbuf, ':'); |
44470971 DW |
864 | print_imsm_dev(dev, nbuf + 5, super->disks->index); |
865 | } | |
cdddbdbc DW |
866 | for (i = 0; i < mpb->num_disks; i++) { |
867 | if (i == super->disks->index) | |
868 | continue; | |
14e8215b | 869 | print_imsm_disk(mpb, i, reserved); |
cdddbdbc | 870 | } |
94827db3 N |
871 | for (dl = super->disks ; dl; dl = dl->next) { |
872 | struct imsm_disk *disk; | |
873 | char str[MAX_RAID_SERIAL_LEN + 1]; | |
874 | __u64 sz; | |
875 | ||
876 | if (dl->index >= 0) | |
877 | continue; | |
878 | ||
879 | disk = &dl->disk; | |
880 | printf("\n"); | |
881 | snprintf(str, MAX_RAID_SERIAL_LEN + 1, "%s", disk->serial); | |
882 | printf(" Disk Serial : %s\n", str); | |
883 | printf(" State :%s%s%s\n", is_spare(disk) ? " spare" : "", | |
884 | is_configured(disk) ? " active" : "", | |
885 | is_failed(disk) ? " failed" : ""); | |
886 | printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id)); | |
887 | sz = __le32_to_cpu(disk->total_blocks) - reserved; | |
888 | printf(" Usable Size : %llu%s\n", (unsigned long long)sz, | |
889 | human_size(sz * 512)); | |
890 | } | |
cdddbdbc DW |
891 | } |
892 | ||
061f2c6a | 893 | static void brief_examine_super_imsm(struct supertype *st, int verbose) |
cdddbdbc | 894 | { |
27fd6274 | 895 | /* We just write a generic IMSM ARRAY entry */ |
ff54de6e N |
896 | struct mdinfo info; |
897 | char nbuf[64]; | |
1e7bc0ed | 898 | struct intel_super *super = st->sb; |
1e7bc0ed | 899 | |
0d5a423f DW |
900 | if (!super->anchor->num_raid_devs) { |
901 | printf("ARRAY metadata=imsm\n"); | |
1e7bc0ed | 902 | return; |
0d5a423f | 903 | } |
ff54de6e | 904 | |
a5d85af7 | 905 | getinfo_super_imsm(st, &info, NULL); |
4737ae25 N |
906 | fname_from_uuid(st, &info, nbuf, ':'); |
907 | printf("ARRAY metadata=imsm UUID=%s\n", nbuf + 5); | |
908 | } | |
909 | ||
910 | static void brief_examine_subarrays_imsm(struct supertype *st, int verbose) | |
911 | { | |
912 | /* We just write a generic IMSM ARRAY entry */ | |
913 | struct mdinfo info; | |
914 | char nbuf[64]; | |
915 | char nbuf1[64]; | |
916 | struct intel_super *super = st->sb; | |
917 | int i; | |
918 | ||
919 | if (!super->anchor->num_raid_devs) | |
920 | return; | |
921 | ||
a5d85af7 | 922 | getinfo_super_imsm(st, &info, NULL); |
ae2bfd4e | 923 | fname_from_uuid(st, &info, nbuf, ':'); |
1e7bc0ed DW |
924 | for (i = 0; i < super->anchor->num_raid_devs; i++) { |
925 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
926 | ||
927 | super->current_vol = i; | |
a5d85af7 | 928 | getinfo_super_imsm(st, &info, NULL); |
ae2bfd4e | 929 | fname_from_uuid(st, &info, nbuf1, ':'); |
1124b3cf | 930 | printf("ARRAY /dev/md/%.16s container=%s member=%d UUID=%s\n", |
cf8de691 | 931 | dev->volume, nbuf + 5, i, nbuf1 + 5); |
1e7bc0ed | 932 | } |
cdddbdbc DW |
933 | } |
934 | ||
9d84c8ea DW |
935 | static void export_examine_super_imsm(struct supertype *st) |
936 | { | |
937 | struct intel_super *super = st->sb; | |
938 | struct imsm_super *mpb = super->anchor; | |
939 | struct mdinfo info; | |
940 | char nbuf[64]; | |
941 | ||
a5d85af7 | 942 | getinfo_super_imsm(st, &info, NULL); |
9d84c8ea DW |
943 | fname_from_uuid(st, &info, nbuf, ':'); |
944 | printf("MD_METADATA=imsm\n"); | |
945 | printf("MD_LEVEL=container\n"); | |
946 | printf("MD_UUID=%s\n", nbuf+5); | |
947 | printf("MD_DEVICES=%u\n", mpb->num_disks); | |
948 | } | |
949 | ||
cdddbdbc DW |
950 | static void detail_super_imsm(struct supertype *st, char *homehost) |
951 | { | |
3ebe00a1 DW |
952 | struct mdinfo info; |
953 | char nbuf[64]; | |
954 | ||
a5d85af7 | 955 | getinfo_super_imsm(st, &info, NULL); |
ae2bfd4e | 956 | fname_from_uuid(st, &info, nbuf, ':'); |
3ebe00a1 | 957 | printf("\n UUID : %s\n", nbuf + 5); |
cdddbdbc DW |
958 | } |
959 | ||
960 | static void brief_detail_super_imsm(struct supertype *st) | |
961 | { | |
ff54de6e N |
962 | struct mdinfo info; |
963 | char nbuf[64]; | |
a5d85af7 | 964 | getinfo_super_imsm(st, &info, NULL); |
ae2bfd4e | 965 | fname_from_uuid(st, &info, nbuf, ':'); |
ff54de6e | 966 | printf(" UUID=%s", nbuf + 5); |
cdddbdbc | 967 | } |
d665cc31 DW |
968 | |
969 | static int imsm_read_serial(int fd, char *devname, __u8 *serial); | |
970 | static void fd2devname(int fd, char *name); | |
971 | ||
972 | static int imsm_enumerate_ports(const char *hba_path, int port_count, int host_base, int verbose) | |
973 | { | |
974 | /* dump an unsorted list of devices attached to ahci, as well as | |
975 | * non-connected ports | |
976 | */ | |
977 | int hba_len = strlen(hba_path) + 1; | |
978 | struct dirent *ent; | |
979 | DIR *dir; | |
980 | char *path = NULL; | |
981 | int err = 0; | |
982 | unsigned long port_mask = (1 << port_count) - 1; | |
983 | ||
f21e18ca | 984 | if (port_count > (int)sizeof(port_mask) * 8) { |
d665cc31 DW |
985 | if (verbose) |
986 | fprintf(stderr, Name ": port_count %d out of range\n", port_count); | |
987 | return 2; | |
988 | } | |
989 | ||
990 | /* scroll through /sys/dev/block looking for devices attached to | |
991 | * this hba | |
992 | */ | |
993 | dir = opendir("/sys/dev/block"); | |
994 | for (ent = dir ? readdir(dir) : NULL; ent; ent = readdir(dir)) { | |
995 | int fd; | |
996 | char model[64]; | |
997 | char vendor[64]; | |
998 | char buf[1024]; | |
999 | int major, minor; | |
1000 | char *device; | |
1001 | char *c; | |
1002 | int port; | |
1003 | int type; | |
1004 | ||
1005 | if (sscanf(ent->d_name, "%d:%d", &major, &minor) != 2) | |
1006 | continue; | |
1007 | path = devt_to_devpath(makedev(major, minor)); | |
1008 | if (!path) | |
1009 | continue; | |
1010 | if (!path_attached_to_hba(path, hba_path)) { | |
1011 | free(path); | |
1012 | path = NULL; | |
1013 | continue; | |
1014 | } | |
1015 | ||
1016 | /* retrieve the scsi device type */ | |
1017 | if (asprintf(&device, "/sys/dev/block/%d:%d/device/xxxxxxx", major, minor) < 0) { | |
1018 | if (verbose) | |
1019 | fprintf(stderr, Name ": failed to allocate 'device'\n"); | |
1020 | err = 2; | |
1021 | break; | |
1022 | } | |
1023 | sprintf(device, "/sys/dev/block/%d:%d/device/type", major, minor); | |
1024 | if (load_sys(device, buf) != 0) { | |
1025 | if (verbose) | |
1026 | fprintf(stderr, Name ": failed to read device type for %s\n", | |
1027 | path); | |
1028 | err = 2; | |
1029 | free(device); | |
1030 | break; | |
1031 | } | |
1032 | type = strtoul(buf, NULL, 10); | |
1033 | ||
1034 | /* if it's not a disk print the vendor and model */ | |
1035 | if (!(type == 0 || type == 7 || type == 14)) { | |
1036 | vendor[0] = '\0'; | |
1037 | model[0] = '\0'; | |
1038 | sprintf(device, "/sys/dev/block/%d:%d/device/vendor", major, minor); | |
1039 | if (load_sys(device, buf) == 0) { | |
1040 | strncpy(vendor, buf, sizeof(vendor)); | |
1041 | vendor[sizeof(vendor) - 1] = '\0'; | |
1042 | c = (char *) &vendor[sizeof(vendor) - 1]; | |
1043 | while (isspace(*c) || *c == '\0') | |
1044 | *c-- = '\0'; | |
1045 | ||
1046 | } | |
1047 | sprintf(device, "/sys/dev/block/%d:%d/device/model", major, minor); | |
1048 | if (load_sys(device, buf) == 0) { | |
1049 | strncpy(model, buf, sizeof(model)); | |
1050 | model[sizeof(model) - 1] = '\0'; | |
1051 | c = (char *) &model[sizeof(model) - 1]; | |
1052 | while (isspace(*c) || *c == '\0') | |
1053 | *c-- = '\0'; | |
1054 | } | |
1055 | ||
1056 | if (vendor[0] && model[0]) | |
1057 | sprintf(buf, "%.64s %.64s", vendor, model); | |
1058 | else | |
1059 | switch (type) { /* numbers from hald/linux/device.c */ | |
1060 | case 1: sprintf(buf, "tape"); break; | |
1061 | case 2: sprintf(buf, "printer"); break; | |
1062 | case 3: sprintf(buf, "processor"); break; | |
1063 | case 4: | |
1064 | case 5: sprintf(buf, "cdrom"); break; | |
1065 | case 6: sprintf(buf, "scanner"); break; | |
1066 | case 8: sprintf(buf, "media_changer"); break; | |
1067 | case 9: sprintf(buf, "comm"); break; | |
1068 | case 12: sprintf(buf, "raid"); break; | |
1069 | default: sprintf(buf, "unknown"); | |
1070 | } | |
1071 | } else | |
1072 | buf[0] = '\0'; | |
1073 | free(device); | |
1074 | ||
1075 | /* chop device path to 'host%d' and calculate the port number */ | |
1076 | c = strchr(&path[hba_len], '/'); | |
4e5e717d AW |
1077 | if (!c) { |
1078 | if (verbose) | |
1079 | fprintf(stderr, Name ": %s - invalid path name\n", path + hba_len); | |
1080 | err = 2; | |
1081 | break; | |
1082 | } | |
d665cc31 DW |
1083 | *c = '\0'; |
1084 | if (sscanf(&path[hba_len], "host%d", &port) == 1) | |
1085 | port -= host_base; | |
1086 | else { | |
1087 | if (verbose) { | |
1088 | *c = '/'; /* repair the full string */ | |
1089 | fprintf(stderr, Name ": failed to determine port number for %s\n", | |
1090 | path); | |
1091 | } | |
1092 | err = 2; | |
1093 | break; | |
1094 | } | |
1095 | ||
1096 | /* mark this port as used */ | |
1097 | port_mask &= ~(1 << port); | |
1098 | ||
1099 | /* print out the device information */ | |
1100 | if (buf[0]) { | |
1101 | printf(" Port%d : - non-disk device (%s) -\n", port, buf); | |
1102 | continue; | |
1103 | } | |
1104 | ||
1105 | fd = dev_open(ent->d_name, O_RDONLY); | |
1106 | if (fd < 0) | |
1107 | printf(" Port%d : - disk info unavailable -\n", port); | |
1108 | else { | |
1109 | fd2devname(fd, buf); | |
1110 | printf(" Port%d : %s", port, buf); | |
1111 | if (imsm_read_serial(fd, NULL, (__u8 *) buf) == 0) | |
1112 | printf(" (%s)\n", buf); | |
1113 | else | |
1114 | printf("()\n"); | |
1115 | } | |
1116 | close(fd); | |
1117 | free(path); | |
1118 | path = NULL; | |
1119 | } | |
1120 | if (path) | |
1121 | free(path); | |
1122 | if (dir) | |
1123 | closedir(dir); | |
1124 | if (err == 0) { | |
1125 | int i; | |
1126 | ||
1127 | for (i = 0; i < port_count; i++) | |
1128 | if (port_mask & (1 << i)) | |
1129 | printf(" Port%d : - no device attached -\n", i); | |
1130 | } | |
1131 | ||
1132 | return err; | |
1133 | } | |
1134 | ||
5615172f | 1135 | static int detail_platform_imsm(int verbose, int enumerate_only) |
d665cc31 DW |
1136 | { |
1137 | /* There are two components to imsm platform support, the ahci SATA | |
1138 | * controller and the option-rom. To find the SATA controller we | |
1139 | * simply look in /sys/bus/pci/drivers/ahci to see if an ahci | |
1140 | * controller with the Intel vendor id is present. This approach | |
1141 | * allows mdadm to leverage the kernel's ahci detection logic, with the | |
1142 | * caveat that if ahci.ko is not loaded mdadm will not be able to | |
1143 | * detect platform raid capabilities. The option-rom resides in a | |
1144 | * platform "Adapter ROM". We scan for its signature to retrieve the | |
1145 | * platform capabilities. If raid support is disabled in the BIOS the | |
1146 | * option-rom capability structure will not be available. | |
1147 | */ | |
1148 | const struct imsm_orom *orom; | |
1149 | struct sys_dev *list, *hba; | |
1150 | DIR *dir; | |
1151 | struct dirent *ent; | |
1152 | const char *hba_path; | |
1153 | int host_base = 0; | |
1154 | int port_count = 0; | |
1155 | ||
5615172f DW |
1156 | if (enumerate_only) { |
1157 | if (check_env("IMSM_NO_PLATFORM") || find_imsm_orom()) | |
1158 | return 0; | |
1159 | return 2; | |
1160 | } | |
1161 | ||
d665cc31 DW |
1162 | list = find_driver_devices("pci", "ahci"); |
1163 | for (hba = list; hba; hba = hba->next) | |
1164 | if (devpath_to_vendor(hba->path) == 0x8086) | |
1165 | break; | |
1166 | ||
1167 | if (!hba) { | |
1168 | if (verbose) | |
1169 | fprintf(stderr, Name ": unable to find active ahci controller\n"); | |
1170 | free_sys_dev(&list); | |
1171 | return 2; | |
1172 | } else if (verbose) | |
1173 | fprintf(stderr, Name ": found Intel SATA AHCI Controller\n"); | |
1174 | hba_path = hba->path; | |
1175 | hba->path = NULL; | |
1176 | free_sys_dev(&list); | |
1177 | ||
1178 | orom = find_imsm_orom(); | |
1179 | if (!orom) { | |
1180 | if (verbose) | |
1181 | fprintf(stderr, Name ": imsm option-rom not found\n"); | |
1182 | return 2; | |
1183 | } | |
1184 | ||
1185 | printf(" Platform : Intel(R) Matrix Storage Manager\n"); | |
1186 | printf(" Version : %d.%d.%d.%d\n", orom->major_ver, orom->minor_ver, | |
1187 | orom->hotfix_ver, orom->build); | |
1188 | printf(" RAID Levels :%s%s%s%s%s\n", | |
1189 | imsm_orom_has_raid0(orom) ? " raid0" : "", | |
1190 | imsm_orom_has_raid1(orom) ? " raid1" : "", | |
1191 | imsm_orom_has_raid1e(orom) ? " raid1e" : "", | |
1192 | imsm_orom_has_raid10(orom) ? " raid10" : "", | |
1193 | imsm_orom_has_raid5(orom) ? " raid5" : ""); | |
8be094f0 DW |
1194 | printf(" Chunk Sizes :%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n", |
1195 | imsm_orom_has_chunk(orom, 2) ? " 2k" : "", | |
1196 | imsm_orom_has_chunk(orom, 4) ? " 4k" : "", | |
1197 | imsm_orom_has_chunk(orom, 8) ? " 8k" : "", | |
1198 | imsm_orom_has_chunk(orom, 16) ? " 16k" : "", | |
1199 | imsm_orom_has_chunk(orom, 32) ? " 32k" : "", | |
1200 | imsm_orom_has_chunk(orom, 64) ? " 64k" : "", | |
1201 | imsm_orom_has_chunk(orom, 128) ? " 128k" : "", | |
1202 | imsm_orom_has_chunk(orom, 256) ? " 256k" : "", | |
1203 | imsm_orom_has_chunk(orom, 512) ? " 512k" : "", | |
1204 | imsm_orom_has_chunk(orom, 1024*1) ? " 1M" : "", | |
1205 | imsm_orom_has_chunk(orom, 1024*2) ? " 2M" : "", | |
1206 | imsm_orom_has_chunk(orom, 1024*4) ? " 4M" : "", | |
1207 | imsm_orom_has_chunk(orom, 1024*8) ? " 8M" : "", | |
1208 | imsm_orom_has_chunk(orom, 1024*16) ? " 16M" : "", | |
1209 | imsm_orom_has_chunk(orom, 1024*32) ? " 32M" : "", | |
1210 | imsm_orom_has_chunk(orom, 1024*64) ? " 64M" : ""); | |
d665cc31 DW |
1211 | printf(" Max Disks : %d\n", orom->tds); |
1212 | printf(" Max Volumes : %d\n", orom->vpa); | |
1213 | printf(" I/O Controller : %s\n", hba_path); | |
1214 | ||
1215 | /* find the smallest scsi host number to determine a port number base */ | |
1216 | dir = opendir(hba_path); | |
1217 | for (ent = dir ? readdir(dir) : NULL; ent; ent = readdir(dir)) { | |
1218 | int host; | |
1219 | ||
1220 | if (sscanf(ent->d_name, "host%d", &host) != 1) | |
1221 | continue; | |
1222 | if (port_count == 0) | |
1223 | host_base = host; | |
1224 | else if (host < host_base) | |
1225 | host_base = host; | |
1226 | ||
1227 | if (host + 1 > port_count + host_base) | |
1228 | port_count = host + 1 - host_base; | |
1229 | ||
1230 | } | |
1231 | if (dir) | |
1232 | closedir(dir); | |
1233 | ||
1234 | if (!port_count || imsm_enumerate_ports(hba_path, port_count, | |
1235 | host_base, verbose) != 0) { | |
1236 | if (verbose) | |
1237 | fprintf(stderr, Name ": failed to enumerate ports\n"); | |
1238 | return 2; | |
1239 | } | |
1240 | ||
1241 | return 0; | |
1242 | } | |
cdddbdbc DW |
1243 | #endif |
1244 | ||
1245 | static int match_home_imsm(struct supertype *st, char *homehost) | |
1246 | { | |
5115ca67 DW |
1247 | /* the imsm metadata format does not specify any host |
1248 | * identification information. We return -1 since we can never | |
1249 | * confirm nor deny whether a given array is "meant" for this | |
148acb7b | 1250 | * host. We rely on compare_super and the 'family_num' fields to |
5115ca67 DW |
1251 | * exclude member disks that do not belong, and we rely on |
1252 | * mdadm.conf to specify the arrays that should be assembled. | |
1253 | * Auto-assembly may still pick up "foreign" arrays. | |
1254 | */ | |
cdddbdbc | 1255 | |
9362c1c8 | 1256 | return -1; |
cdddbdbc DW |
1257 | } |
1258 | ||
1259 | static void uuid_from_super_imsm(struct supertype *st, int uuid[4]) | |
1260 | { | |
51006d85 N |
1261 | /* The uuid returned here is used for: |
1262 | * uuid to put into bitmap file (Create, Grow) | |
1263 | * uuid for backup header when saving critical section (Grow) | |
1264 | * comparing uuids when re-adding a device into an array | |
1265 | * In these cases the uuid required is that of the data-array, | |
1266 | * not the device-set. | |
1267 | * uuid to recognise same set when adding a missing device back | |
1268 | * to an array. This is a uuid for the device-set. | |
1269 | * | |
1270 | * For each of these we can make do with a truncated | |
1271 | * or hashed uuid rather than the original, as long as | |
1272 | * everyone agrees. | |
1273 | * In each case the uuid required is that of the data-array, | |
1274 | * not the device-set. | |
43dad3d6 | 1275 | */ |
51006d85 N |
1276 | /* imsm does not track uuid's so we synthesis one using sha1 on |
1277 | * - The signature (Which is constant for all imsm array, but no matter) | |
148acb7b | 1278 | * - the orig_family_num of the container |
51006d85 N |
1279 | * - the index number of the volume |
1280 | * - the 'serial' number of the volume. | |
1281 | * Hopefully these are all constant. | |
1282 | */ | |
1283 | struct intel_super *super = st->sb; | |
43dad3d6 | 1284 | |
51006d85 N |
1285 | char buf[20]; |
1286 | struct sha1_ctx ctx; | |
1287 | struct imsm_dev *dev = NULL; | |
148acb7b | 1288 | __u32 family_num; |
51006d85 | 1289 | |
148acb7b DW |
1290 | /* some mdadm versions failed to set ->orig_family_num, in which |
1291 | * case fall back to ->family_num. orig_family_num will be | |
1292 | * fixed up with the first metadata update. | |
1293 | */ | |
1294 | family_num = super->anchor->orig_family_num; | |
1295 | if (family_num == 0) | |
1296 | family_num = super->anchor->family_num; | |
51006d85 | 1297 | sha1_init_ctx(&ctx); |
92bd8f8d | 1298 | sha1_process_bytes(super->anchor->sig, MPB_SIG_LEN, &ctx); |
148acb7b | 1299 | sha1_process_bytes(&family_num, sizeof(__u32), &ctx); |
51006d85 N |
1300 | if (super->current_vol >= 0) |
1301 | dev = get_imsm_dev(super, super->current_vol); | |
1302 | if (dev) { | |
1303 | __u32 vol = super->current_vol; | |
1304 | sha1_process_bytes(&vol, sizeof(vol), &ctx); | |
1305 | sha1_process_bytes(dev->volume, MAX_RAID_SERIAL_LEN, &ctx); | |
1306 | } | |
1307 | sha1_finish_ctx(&ctx, buf); | |
1308 | memcpy(uuid, buf, 4*4); | |
cdddbdbc DW |
1309 | } |
1310 | ||
0d481d37 | 1311 | #if 0 |
4f5bc454 DW |
1312 | static void |
1313 | get_imsm_numerical_version(struct imsm_super *mpb, int *m, int *p) | |
cdddbdbc | 1314 | { |
cdddbdbc DW |
1315 | __u8 *v = get_imsm_version(mpb); |
1316 | __u8 *end = mpb->sig + MAX_SIGNATURE_LENGTH; | |
1317 | char major[] = { 0, 0, 0 }; | |
1318 | char minor[] = { 0 ,0, 0 }; | |
1319 | char patch[] = { 0, 0, 0 }; | |
1320 | char *ver_parse[] = { major, minor, patch }; | |
1321 | int i, j; | |
1322 | ||
1323 | i = j = 0; | |
1324 | while (*v != '\0' && v < end) { | |
1325 | if (*v != '.' && j < 2) | |
1326 | ver_parse[i][j++] = *v; | |
1327 | else { | |
1328 | i++; | |
1329 | j = 0; | |
1330 | } | |
1331 | v++; | |
1332 | } | |
1333 | ||
4f5bc454 DW |
1334 | *m = strtol(minor, NULL, 0); |
1335 | *p = strtol(patch, NULL, 0); | |
1336 | } | |
0d481d37 | 1337 | #endif |
4f5bc454 | 1338 | |
1e5c6983 DW |
1339 | static __u32 migr_strip_blocks_resync(struct imsm_dev *dev) |
1340 | { | |
1341 | /* migr_strip_size when repairing or initializing parity */ | |
1342 | struct imsm_map *map = get_imsm_map(dev, 0); | |
1343 | __u32 chunk = __le32_to_cpu(map->blocks_per_strip); | |
1344 | ||
1345 | switch (get_imsm_raid_level(map)) { | |
1346 | case 5: | |
1347 | case 10: | |
1348 | return chunk; | |
1349 | default: | |
1350 | return 128*1024 >> 9; | |
1351 | } | |
1352 | } | |
1353 | ||
1354 | static __u32 migr_strip_blocks_rebuild(struct imsm_dev *dev) | |
1355 | { | |
1356 | /* migr_strip_size when rebuilding a degraded disk, no idea why | |
1357 | * this is different than migr_strip_size_resync(), but it's good | |
1358 | * to be compatible | |
1359 | */ | |
1360 | struct imsm_map *map = get_imsm_map(dev, 1); | |
1361 | __u32 chunk = __le32_to_cpu(map->blocks_per_strip); | |
1362 | ||
1363 | switch (get_imsm_raid_level(map)) { | |
1364 | case 1: | |
1365 | case 10: | |
1366 | if (map->num_members % map->num_domains == 0) | |
1367 | return 128*1024 >> 9; | |
1368 | else | |
1369 | return chunk; | |
1370 | case 5: | |
1371 | return max((__u32) 64*1024 >> 9, chunk); | |
1372 | default: | |
1373 | return 128*1024 >> 9; | |
1374 | } | |
1375 | } | |
1376 | ||
1377 | static __u32 num_stripes_per_unit_resync(struct imsm_dev *dev) | |
1378 | { | |
1379 | struct imsm_map *lo = get_imsm_map(dev, 0); | |
1380 | struct imsm_map *hi = get_imsm_map(dev, 1); | |
1381 | __u32 lo_chunk = __le32_to_cpu(lo->blocks_per_strip); | |
1382 | __u32 hi_chunk = __le32_to_cpu(hi->blocks_per_strip); | |
1383 | ||
1384 | return max((__u32) 1, hi_chunk / lo_chunk); | |
1385 | } | |
1386 | ||
1387 | static __u32 num_stripes_per_unit_rebuild(struct imsm_dev *dev) | |
1388 | { | |
1389 | struct imsm_map *lo = get_imsm_map(dev, 0); | |
1390 | int level = get_imsm_raid_level(lo); | |
1391 | ||
1392 | if (level == 1 || level == 10) { | |
1393 | struct imsm_map *hi = get_imsm_map(dev, 1); | |
1394 | ||
1395 | return hi->num_domains; | |
1396 | } else | |
1397 | return num_stripes_per_unit_resync(dev); | |
1398 | } | |
1399 | ||
1400 | static __u8 imsm_num_data_members(struct imsm_dev *dev) | |
1401 | { | |
1402 | /* named 'imsm_' because raid0, raid1 and raid10 | |
1403 | * counter-intuitively have the same number of data disks | |
1404 | */ | |
1405 | struct imsm_map *map = get_imsm_map(dev, 0); | |
1406 | ||
1407 | switch (get_imsm_raid_level(map)) { | |
1408 | case 0: | |
1409 | case 1: | |
1410 | case 10: | |
1411 | return map->num_members; | |
1412 | case 5: | |
1413 | return map->num_members - 1; | |
1414 | default: | |
1415 | dprintf("%s: unsupported raid level\n", __func__); | |
1416 | return 0; | |
1417 | } | |
1418 | } | |
1419 | ||
1420 | static __u32 parity_segment_depth(struct imsm_dev *dev) | |
1421 | { | |
1422 | struct imsm_map *map = get_imsm_map(dev, 0); | |
1423 | __u32 chunk = __le32_to_cpu(map->blocks_per_strip); | |
1424 | ||
1425 | switch(get_imsm_raid_level(map)) { | |
1426 | case 1: | |
1427 | case 10: | |
1428 | return chunk * map->num_domains; | |
1429 | case 5: | |
1430 | return chunk * map->num_members; | |
1431 | default: | |
1432 | return chunk; | |
1433 | } | |
1434 | } | |
1435 | ||
1436 | static __u32 map_migr_block(struct imsm_dev *dev, __u32 block) | |
1437 | { | |
1438 | struct imsm_map *map = get_imsm_map(dev, 1); | |
1439 | __u32 chunk = __le32_to_cpu(map->blocks_per_strip); | |
1440 | __u32 strip = block / chunk; | |
1441 | ||
1442 | switch (get_imsm_raid_level(map)) { | |
1443 | case 1: | |
1444 | case 10: { | |
1445 | __u32 vol_strip = (strip * map->num_domains) + 1; | |
1446 | __u32 vol_stripe = vol_strip / map->num_members; | |
1447 | ||
1448 | return vol_stripe * chunk + block % chunk; | |
1449 | } case 5: { | |
1450 | __u32 stripe = strip / (map->num_members - 1); | |
1451 | ||
1452 | return stripe * chunk + block % chunk; | |
1453 | } | |
1454 | default: | |
1455 | return 0; | |
1456 | } | |
1457 | } | |
1458 | ||
1459 | static __u64 blocks_per_migr_unit(struct imsm_dev *dev) | |
1460 | { | |
1461 | /* calculate the conversion factor between per member 'blocks' | |
1462 | * (md/{resync,rebuild}_start) and imsm migration units, return | |
1463 | * 0 for the 'not migrating' and 'unsupported migration' cases | |
1464 | */ | |
1465 | if (!dev->vol.migr_state) | |
1466 | return 0; | |
1467 | ||
1468 | switch (migr_type(dev)) { | |
1469 | case MIGR_VERIFY: | |
1470 | case MIGR_REPAIR: | |
1471 | case MIGR_INIT: { | |
1472 | struct imsm_map *map = get_imsm_map(dev, 0); | |
1473 | __u32 stripes_per_unit; | |
1474 | __u32 blocks_per_unit; | |
1475 | __u32 parity_depth; | |
1476 | __u32 migr_chunk; | |
1477 | __u32 block_map; | |
1478 | __u32 block_rel; | |
1479 | __u32 segment; | |
1480 | __u32 stripe; | |
1481 | __u8 disks; | |
1482 | ||
1483 | /* yes, this is really the translation of migr_units to | |
1484 | * per-member blocks in the 'resync' case | |
1485 | */ | |
1486 | stripes_per_unit = num_stripes_per_unit_resync(dev); | |
1487 | migr_chunk = migr_strip_blocks_resync(dev); | |
1488 | disks = imsm_num_data_members(dev); | |
1489 | blocks_per_unit = stripes_per_unit * migr_chunk * disks; | |
1490 | stripe = __le32_to_cpu(map->blocks_per_strip) * disks; | |
1491 | segment = blocks_per_unit / stripe; | |
1492 | block_rel = blocks_per_unit - segment * stripe; | |
1493 | parity_depth = parity_segment_depth(dev); | |
1494 | block_map = map_migr_block(dev, block_rel); | |
1495 | return block_map + parity_depth * segment; | |
1496 | } | |
1497 | case MIGR_REBUILD: { | |
1498 | __u32 stripes_per_unit; | |
1499 | __u32 migr_chunk; | |
1500 | ||
1501 | stripes_per_unit = num_stripes_per_unit_rebuild(dev); | |
1502 | migr_chunk = migr_strip_blocks_rebuild(dev); | |
1503 | return migr_chunk * stripes_per_unit; | |
1504 | } | |
1505 | case MIGR_GEN_MIGR: | |
aad6f216 | 1506 | /* FIXME I need a number here */ |
1e5c6983 DW |
1507 | case MIGR_STATE_CHANGE: |
1508 | default: | |
1509 | return 0; | |
1510 | } | |
1511 | } | |
1512 | ||
c2c087e6 DW |
1513 | static int imsm_level_to_layout(int level) |
1514 | { | |
1515 | switch (level) { | |
1516 | case 0: | |
1517 | case 1: | |
1518 | return 0; | |
1519 | case 5: | |
1520 | case 6: | |
a380c027 | 1521 | return ALGORITHM_LEFT_ASYMMETRIC; |
c2c087e6 | 1522 | case 10: |
c92a2527 | 1523 | return 0x102; |
c2c087e6 | 1524 | } |
a18a888e | 1525 | return UnSet; |
c2c087e6 DW |
1526 | } |
1527 | ||
a5d85af7 | 1528 | static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info, char *dmap) |
bf5a934a DW |
1529 | { |
1530 | struct intel_super *super = st->sb; | |
949c47a0 | 1531 | struct imsm_dev *dev = get_imsm_dev(super, super->current_vol); |
a965f303 | 1532 | struct imsm_map *map = get_imsm_map(dev, 0); |
81ac8b4d | 1533 | struct imsm_map *prev_map = get_imsm_map(dev, 1); |
efb30e7f | 1534 | struct dl *dl; |
e207da2f | 1535 | char *devname; |
a5d85af7 | 1536 | int map_disks = info->array.raid_disks; |
bf5a934a | 1537 | |
efb30e7f DW |
1538 | for (dl = super->disks; dl; dl = dl->next) |
1539 | if (dl->raiddisk == info->disk.raid_disk) | |
1540 | break; | |
bf5a934a DW |
1541 | info->container_member = super->current_vol; |
1542 | info->array.raid_disks = map->num_members; | |
1543 | info->array.level = get_imsm_raid_level(map); | |
1544 | info->array.layout = imsm_level_to_layout(info->array.level); | |
1545 | info->array.md_minor = -1; | |
1546 | info->array.ctime = 0; | |
1547 | info->array.utime = 0; | |
301406c9 DW |
1548 | info->array.chunk_size = __le16_to_cpu(map->blocks_per_strip) << 9; |
1549 | info->array.state = !dev->vol.dirty; | |
da9b4a62 DW |
1550 | info->custom_array_size = __le32_to_cpu(dev->size_high); |
1551 | info->custom_array_size <<= 32; | |
1552 | info->custom_array_size |= __le32_to_cpu(dev->size_low); | |
301406c9 DW |
1553 | |
1554 | info->disk.major = 0; | |
1555 | info->disk.minor = 0; | |
efb30e7f DW |
1556 | if (dl) { |
1557 | info->disk.major = dl->major; | |
1558 | info->disk.minor = dl->minor; | |
1559 | } | |
bf5a934a DW |
1560 | |
1561 | info->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
1562 | info->component_size = __le32_to_cpu(map->blocks_per_member); | |
301406c9 | 1563 | memset(info->uuid, 0, sizeof(info->uuid)); |
921d9e16 | 1564 | info->recovery_start = MaxSector; |
81ac8b4d AK |
1565 | info->reshape_active = (prev_map != NULL); |
1566 | if (info->reshape_active) | |
1567 | info->delta_disks = map->num_members - prev_map->num_members; | |
1568 | else | |
1569 | info->delta_disks = 0; | |
bf5a934a | 1570 | |
1e5c6983 | 1571 | if (map->map_state == IMSM_T_STATE_UNINITIALIZED || dev->vol.dirty) { |
301406c9 | 1572 | info->resync_start = 0; |
1e5c6983 DW |
1573 | } else if (dev->vol.migr_state) { |
1574 | switch (migr_type(dev)) { | |
1575 | case MIGR_REPAIR: | |
1576 | case MIGR_INIT: { | |
1577 | __u64 blocks_per_unit = blocks_per_migr_unit(dev); | |
1578 | __u64 units = __le32_to_cpu(dev->vol.curr_migr_unit); | |
1579 | ||
1580 | info->resync_start = blocks_per_unit * units; | |
1581 | break; | |
1582 | } | |
1583 | case MIGR_VERIFY: | |
1584 | /* we could emulate the checkpointing of | |
1585 | * 'sync_action=check' migrations, but for now | |
1586 | * we just immediately complete them | |
1587 | */ | |
1588 | case MIGR_REBUILD: | |
1589 | /* this is handled by container_content_imsm() */ | |
1590 | case MIGR_GEN_MIGR: | |
1591 | case MIGR_STATE_CHANGE: | |
1592 | /* FIXME handle other migrations */ | |
1593 | default: | |
1594 | /* we are not dirty, so... */ | |
1595 | info->resync_start = MaxSector; | |
1596 | } | |
1597 | } else | |
b7528a20 | 1598 | info->resync_start = MaxSector; |
301406c9 DW |
1599 | |
1600 | strncpy(info->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN); | |
1601 | info->name[MAX_RAID_SERIAL_LEN] = 0; | |
bf5a934a | 1602 | |
f35f2525 N |
1603 | info->array.major_version = -1; |
1604 | info->array.minor_version = -2; | |
e207da2f AW |
1605 | devname = devnum2devname(st->container_dev); |
1606 | *info->text_version = '\0'; | |
1607 | if (devname) | |
1608 | sprintf(info->text_version, "/%s/%d", devname, info->container_member); | |
1609 | free(devname); | |
a67dd8cc | 1610 | info->safe_mode_delay = 4000; /* 4 secs like the Matrix driver */ |
51006d85 | 1611 | uuid_from_super_imsm(st, info->uuid); |
a5d85af7 N |
1612 | |
1613 | if (dmap) { | |
1614 | int i, j; | |
1615 | for (i=0; i<map_disks; i++) { | |
1616 | dmap[i] = 0; | |
1617 | if (i < info->array.raid_disks) { | |
1618 | struct imsm_disk *dsk; | |
1619 | j = get_imsm_disk_idx(dev, i); | |
1620 | dsk = get_imsm_disk(super, j); | |
1621 | if (dsk && (dsk->status & CONFIGURED_DISK)) | |
1622 | dmap[i] = 1; | |
1623 | } | |
1624 | } | |
1625 | } | |
81ac8b4d | 1626 | } |
bf5a934a | 1627 | |
97b4d0e9 DW |
1628 | static __u8 imsm_check_degraded(struct intel_super *super, struct imsm_dev *dev, int failed); |
1629 | static int imsm_count_failed(struct intel_super *super, struct imsm_dev *dev); | |
1630 | ||
1631 | static struct imsm_disk *get_imsm_missing(struct intel_super *super, __u8 index) | |
1632 | { | |
1633 | struct dl *d; | |
1634 | ||
1635 | for (d = super->missing; d; d = d->next) | |
1636 | if (d->index == index) | |
1637 | return &d->disk; | |
1638 | return NULL; | |
1639 | } | |
1640 | ||
a5d85af7 | 1641 | static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info, char *map) |
4f5bc454 DW |
1642 | { |
1643 | struct intel_super *super = st->sb; | |
4f5bc454 | 1644 | struct imsm_disk *disk; |
a5d85af7 | 1645 | int map_disks = info->array.raid_disks; |
ab3cb6b3 N |
1646 | int max_enough = -1; |
1647 | int i; | |
1648 | struct imsm_super *mpb; | |
4f5bc454 | 1649 | |
bf5a934a | 1650 | if (super->current_vol >= 0) { |
a5d85af7 | 1651 | getinfo_super_imsm_volume(st, info, map); |
bf5a934a DW |
1652 | return; |
1653 | } | |
d23fe947 DW |
1654 | |
1655 | /* Set raid_disks to zero so that Assemble will always pull in valid | |
1656 | * spares | |
1657 | */ | |
1658 | info->array.raid_disks = 0; | |
cdddbdbc DW |
1659 | info->array.level = LEVEL_CONTAINER; |
1660 | info->array.layout = 0; | |
1661 | info->array.md_minor = -1; | |
c2c087e6 | 1662 | info->array.ctime = 0; /* N/A for imsm */ |
cdddbdbc DW |
1663 | info->array.utime = 0; |
1664 | info->array.chunk_size = 0; | |
1665 | ||
1666 | info->disk.major = 0; | |
1667 | info->disk.minor = 0; | |
cdddbdbc | 1668 | info->disk.raid_disk = -1; |
c2c087e6 | 1669 | info->reshape_active = 0; |
f35f2525 N |
1670 | info->array.major_version = -1; |
1671 | info->array.minor_version = -2; | |
c2c087e6 | 1672 | strcpy(info->text_version, "imsm"); |
a67dd8cc | 1673 | info->safe_mode_delay = 0; |
c2c087e6 DW |
1674 | info->disk.number = -1; |
1675 | info->disk.state = 0; | |
c5afc314 | 1676 | info->name[0] = 0; |
921d9e16 | 1677 | info->recovery_start = MaxSector; |
c2c087e6 | 1678 | |
97b4d0e9 | 1679 | /* do we have the all the insync disks that we expect? */ |
ab3cb6b3 | 1680 | mpb = super->anchor; |
97b4d0e9 | 1681 | |
ab3cb6b3 N |
1682 | for (i = 0; i < mpb->num_raid_devs; i++) { |
1683 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
1684 | int failed, enough, j, missing = 0; | |
1685 | struct imsm_map *map; | |
1686 | __u8 state; | |
97b4d0e9 | 1687 | |
ab3cb6b3 N |
1688 | failed = imsm_count_failed(super, dev); |
1689 | state = imsm_check_degraded(super, dev, failed); | |
1690 | map = get_imsm_map(dev, dev->vol.migr_state); | |
1691 | ||
1692 | /* any newly missing disks? | |
1693 | * (catches single-degraded vs double-degraded) | |
1694 | */ | |
1695 | for (j = 0; j < map->num_members; j++) { | |
1696 | __u32 ord = get_imsm_ord_tbl_ent(dev, i); | |
1697 | __u32 idx = ord_to_idx(ord); | |
1698 | ||
1699 | if (!(ord & IMSM_ORD_REBUILD) && | |
1700 | get_imsm_missing(super, idx)) { | |
1701 | missing = 1; | |
1702 | break; | |
1703 | } | |
97b4d0e9 | 1704 | } |
ab3cb6b3 N |
1705 | |
1706 | if (state == IMSM_T_STATE_FAILED) | |
1707 | enough = -1; | |
1708 | else if (state == IMSM_T_STATE_DEGRADED && | |
1709 | (state != map->map_state || missing)) | |
1710 | enough = 0; | |
1711 | else /* we're normal, or already degraded */ | |
1712 | enough = 1; | |
1713 | ||
1714 | /* in the missing/failed disk case check to see | |
1715 | * if at least one array is runnable | |
1716 | */ | |
1717 | max_enough = max(max_enough, enough); | |
1718 | } | |
1719 | dprintf("%s: enough: %d\n", __func__, max_enough); | |
1720 | info->container_enough = max_enough; | |
97b4d0e9 | 1721 | |
4a04ec6c | 1722 | if (super->disks) { |
14e8215b DW |
1723 | __u32 reserved = imsm_reserved_sectors(super, super->disks); |
1724 | ||
b9f594fe | 1725 | disk = &super->disks->disk; |
14e8215b DW |
1726 | info->data_offset = __le32_to_cpu(disk->total_blocks) - reserved; |
1727 | info->component_size = reserved; | |
25ed7e59 | 1728 | info->disk.state = is_configured(disk) ? (1 << MD_DISK_ACTIVE) : 0; |
df474657 DW |
1729 | /* we don't change info->disk.raid_disk here because |
1730 | * this state will be finalized in mdmon after we have | |
1731 | * found the 'most fresh' version of the metadata | |
1732 | */ | |
25ed7e59 DW |
1733 | info->disk.state |= is_failed(disk) ? (1 << MD_DISK_FAULTY) : 0; |
1734 | info->disk.state |= is_spare(disk) ? 0 : (1 << MD_DISK_SYNC); | |
cdddbdbc | 1735 | } |
a575e2a7 DW |
1736 | |
1737 | /* only call uuid_from_super_imsm when this disk is part of a populated container, | |
1738 | * ->compare_super may have updated the 'num_raid_devs' field for spares | |
1739 | */ | |
1740 | if (info->disk.state & (1 << MD_DISK_SYNC) || super->anchor->num_raid_devs) | |
36ba7d48 | 1741 | uuid_from_super_imsm(st, info->uuid); |
22e263f6 AC |
1742 | else |
1743 | memcpy(info->uuid, uuid_zero, sizeof(uuid_zero)); | |
a5d85af7 N |
1744 | |
1745 | /* I don't know how to compute 'map' on imsm, so use safe default */ | |
1746 | if (map) { | |
1747 | int i; | |
1748 | for (i = 0; i < map_disks; i++) | |
1749 | map[i] = 1; | |
1750 | } | |
1751 | ||
cdddbdbc DW |
1752 | } |
1753 | ||
5c4cd5da AC |
1754 | /* allocates memory and fills disk in mdinfo structure |
1755 | * for each disk in array */ | |
1756 | struct mdinfo *getinfo_super_disks_imsm(struct supertype *st) | |
1757 | { | |
1758 | struct mdinfo *mddev = NULL; | |
1759 | struct intel_super *super = st->sb; | |
1760 | struct imsm_disk *disk; | |
1761 | int count = 0; | |
1762 | struct dl *dl; | |
1763 | if (!super || !super->disks) | |
1764 | return NULL; | |
1765 | dl = super->disks; | |
1766 | mddev = malloc(sizeof(*mddev)); | |
1767 | if (!mddev) { | |
1768 | fprintf(stderr, Name ": Failed to allocate memory.\n"); | |
1769 | return NULL; | |
1770 | } | |
1771 | memset(mddev, 0, sizeof(*mddev)); | |
1772 | while (dl) { | |
1773 | struct mdinfo *tmp; | |
1774 | disk = &dl->disk; | |
1775 | tmp = malloc(sizeof(*tmp)); | |
1776 | if (!tmp) { | |
1777 | fprintf(stderr, Name ": Failed to allocate memory.\n"); | |
1778 | if (mddev) | |
1779 | sysfs_free(mddev); | |
1780 | return NULL; | |
1781 | } | |
1782 | memset(tmp, 0, sizeof(*tmp)); | |
1783 | if (mddev->devs) | |
1784 | tmp->next = mddev->devs; | |
1785 | mddev->devs = tmp; | |
1786 | tmp->disk.number = count++; | |
1787 | tmp->disk.major = dl->major; | |
1788 | tmp->disk.minor = dl->minor; | |
1789 | tmp->disk.state = is_configured(disk) ? | |
1790 | (1 << MD_DISK_ACTIVE) : 0; | |
1791 | tmp->disk.state |= is_failed(disk) ? (1 << MD_DISK_FAULTY) : 0; | |
1792 | tmp->disk.state |= is_spare(disk) ? 0 : (1 << MD_DISK_SYNC); | |
1793 | tmp->disk.raid_disk = -1; | |
1794 | dl = dl->next; | |
1795 | } | |
1796 | return mddev; | |
1797 | } | |
1798 | ||
cdddbdbc DW |
1799 | static int update_super_imsm(struct supertype *st, struct mdinfo *info, |
1800 | char *update, char *devname, int verbose, | |
1801 | int uuid_set, char *homehost) | |
1802 | { | |
f352c545 DW |
1803 | /* For 'assemble' and 'force' we need to return non-zero if any |
1804 | * change was made. For others, the return value is ignored. | |
1805 | * Update options are: | |
1806 | * force-one : This device looks a bit old but needs to be included, | |
1807 | * update age info appropriately. | |
1808 | * assemble: clear any 'faulty' flag to allow this device to | |
1809 | * be assembled. | |
1810 | * force-array: Array is degraded but being forced, mark it clean | |
1811 | * if that will be needed to assemble it. | |
1812 | * | |
1813 | * newdev: not used ???? | |
1814 | * grow: Array has gained a new device - this is currently for | |
1815 | * linear only | |
1816 | * resync: mark as dirty so a resync will happen. | |
1817 | * name: update the name - preserving the homehost | |
6e46bf34 | 1818 | * uuid: Change the uuid of the array to match watch is given |
f352c545 DW |
1819 | * |
1820 | * Following are not relevant for this imsm: | |
1821 | * sparc2.2 : update from old dodgey metadata | |
1822 | * super-minor: change the preferred_minor number | |
1823 | * summaries: update redundant counters. | |
f352c545 DW |
1824 | * homehost: update the recorded homehost |
1825 | * _reshape_progress: record new reshape_progress position. | |
1826 | */ | |
6e46bf34 DW |
1827 | int rv = 1; |
1828 | struct intel_super *super = st->sb; | |
1829 | struct imsm_super *mpb; | |
f352c545 | 1830 | |
6e46bf34 DW |
1831 | /* we can only update container info */ |
1832 | if (!super || super->current_vol >= 0 || !super->anchor) | |
1833 | return 1; | |
1834 | ||
1835 | mpb = super->anchor; | |
1836 | ||
1837 | if (strcmp(update, "uuid") == 0 && uuid_set && !info->update_private) | |
1e2b2765 | 1838 | rv = -1; |
6e46bf34 DW |
1839 | else if (strcmp(update, "uuid") == 0 && uuid_set && info->update_private) { |
1840 | mpb->orig_family_num = *((__u32 *) info->update_private); | |
1841 | rv = 0; | |
1842 | } else if (strcmp(update, "uuid") == 0) { | |
1843 | __u32 *new_family = malloc(sizeof(*new_family)); | |
1844 | ||
1845 | /* update orig_family_number with the incoming random | |
1846 | * data, report the new effective uuid, and store the | |
1847 | * new orig_family_num for future updates. | |
1848 | */ | |
1849 | if (new_family) { | |
1850 | memcpy(&mpb->orig_family_num, info->uuid, sizeof(__u32)); | |
1851 | uuid_from_super_imsm(st, info->uuid); | |
1852 | *new_family = mpb->orig_family_num; | |
1853 | info->update_private = new_family; | |
1854 | rv = 0; | |
1855 | } | |
1856 | } else if (strcmp(update, "assemble") == 0) | |
1857 | rv = 0; | |
1858 | else | |
1e2b2765 | 1859 | rv = -1; |
f352c545 | 1860 | |
6e46bf34 DW |
1861 | /* successful update? recompute checksum */ |
1862 | if (rv == 0) | |
1863 | mpb->check_sum = __le32_to_cpu(__gen_imsm_checksum(mpb)); | |
f352c545 DW |
1864 | |
1865 | return rv; | |
cdddbdbc DW |
1866 | } |
1867 | ||
c2c087e6 | 1868 | static size_t disks_to_mpb_size(int disks) |
cdddbdbc | 1869 | { |
c2c087e6 | 1870 | size_t size; |
cdddbdbc | 1871 | |
c2c087e6 DW |
1872 | size = sizeof(struct imsm_super); |
1873 | size += (disks - 1) * sizeof(struct imsm_disk); | |
1874 | size += 2 * sizeof(struct imsm_dev); | |
1875 | /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */ | |
1876 | size += (4 - 2) * sizeof(struct imsm_map); | |
1877 | /* 4 possible disk_ord_tbl's */ | |
1878 | size += 4 * (disks - 1) * sizeof(__u32); | |
1879 | ||
1880 | return size; | |
1881 | } | |
1882 | ||
1883 | static __u64 avail_size_imsm(struct supertype *st, __u64 devsize) | |
1884 | { | |
1885 | if (devsize < (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS)) | |
1886 | return 0; | |
1887 | ||
1888 | return devsize - (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); | |
cdddbdbc DW |
1889 | } |
1890 | ||
ba2de7ba DW |
1891 | static void free_devlist(struct intel_super *super) |
1892 | { | |
1893 | struct intel_dev *dv; | |
1894 | ||
1895 | while (super->devlist) { | |
1896 | dv = super->devlist->next; | |
1897 | free(super->devlist->dev); | |
1898 | free(super->devlist); | |
1899 | super->devlist = dv; | |
1900 | } | |
1901 | } | |
1902 | ||
1903 | static void imsm_copy_dev(struct imsm_dev *dest, struct imsm_dev *src) | |
1904 | { | |
1905 | memcpy(dest, src, sizeof_imsm_dev(src, 0)); | |
1906 | } | |
1907 | ||
cdddbdbc DW |
1908 | static int compare_super_imsm(struct supertype *st, struct supertype *tst) |
1909 | { | |
1910 | /* | |
1911 | * return: | |
1912 | * 0 same, or first was empty, and second was copied | |
1913 | * 1 second had wrong number | |
1914 | * 2 wrong uuid | |
1915 | * 3 wrong other info | |
1916 | */ | |
1917 | struct intel_super *first = st->sb; | |
1918 | struct intel_super *sec = tst->sb; | |
1919 | ||
1920 | if (!first) { | |
1921 | st->sb = tst->sb; | |
1922 | tst->sb = NULL; | |
1923 | return 0; | |
1924 | } | |
1925 | ||
d23fe947 DW |
1926 | /* if an anchor does not have num_raid_devs set then it is a free |
1927 | * floating spare | |
1928 | */ | |
1929 | if (first->anchor->num_raid_devs > 0 && | |
1930 | sec->anchor->num_raid_devs > 0) { | |
a2b97981 DW |
1931 | /* Determine if these disks might ever have been |
1932 | * related. Further disambiguation can only take place | |
1933 | * in load_super_imsm_all | |
1934 | */ | |
1935 | __u32 first_family = first->anchor->orig_family_num; | |
1936 | __u32 sec_family = sec->anchor->orig_family_num; | |
1937 | ||
f796af5d DW |
1938 | if (memcmp(first->anchor->sig, sec->anchor->sig, |
1939 | MAX_SIGNATURE_LENGTH) != 0) | |
1940 | return 3; | |
1941 | ||
a2b97981 DW |
1942 | if (first_family == 0) |
1943 | first_family = first->anchor->family_num; | |
1944 | if (sec_family == 0) | |
1945 | sec_family = sec->anchor->family_num; | |
1946 | ||
1947 | if (first_family != sec_family) | |
d23fe947 | 1948 | return 3; |
f796af5d | 1949 | |
d23fe947 | 1950 | } |
cdddbdbc | 1951 | |
f796af5d | 1952 | |
3e372e5a DW |
1953 | /* if 'first' is a spare promote it to a populated mpb with sec's |
1954 | * family number | |
1955 | */ | |
1956 | if (first->anchor->num_raid_devs == 0 && | |
1957 | sec->anchor->num_raid_devs > 0) { | |
78d30f94 | 1958 | int i; |
ba2de7ba DW |
1959 | struct intel_dev *dv; |
1960 | struct imsm_dev *dev; | |
78d30f94 DW |
1961 | |
1962 | /* we need to copy raid device info from sec if an allocation | |
1963 | * fails here we don't associate the spare | |
1964 | */ | |
1965 | for (i = 0; i < sec->anchor->num_raid_devs; i++) { | |
ba2de7ba DW |
1966 | dv = malloc(sizeof(*dv)); |
1967 | if (!dv) | |
1968 | break; | |
1969 | dev = malloc(sizeof_imsm_dev(get_imsm_dev(sec, i), 1)); | |
1970 | if (!dev) { | |
1971 | free(dv); | |
1972 | break; | |
78d30f94 | 1973 | } |
ba2de7ba DW |
1974 | dv->dev = dev; |
1975 | dv->index = i; | |
1976 | dv->next = first->devlist; | |
1977 | first->devlist = dv; | |
78d30f94 | 1978 | } |
709743c5 | 1979 | if (i < sec->anchor->num_raid_devs) { |
ba2de7ba DW |
1980 | /* allocation failure */ |
1981 | free_devlist(first); | |
1982 | fprintf(stderr, "imsm: failed to associate spare\n"); | |
1983 | return 3; | |
78d30f94 | 1984 | } |
3e372e5a | 1985 | first->anchor->num_raid_devs = sec->anchor->num_raid_devs; |
148acb7b | 1986 | first->anchor->orig_family_num = sec->anchor->orig_family_num; |
3e372e5a | 1987 | first->anchor->family_num = sec->anchor->family_num; |
ac6449be | 1988 | memcpy(first->anchor->sig, sec->anchor->sig, MAX_SIGNATURE_LENGTH); |
709743c5 DW |
1989 | for (i = 0; i < sec->anchor->num_raid_devs; i++) |
1990 | imsm_copy_dev(get_imsm_dev(first, i), get_imsm_dev(sec, i)); | |
3e372e5a DW |
1991 | } |
1992 | ||
cdddbdbc DW |
1993 | return 0; |
1994 | } | |
1995 | ||
0030e8d6 DW |
1996 | static void fd2devname(int fd, char *name) |
1997 | { | |
1998 | struct stat st; | |
1999 | char path[256]; | |
33a6535d | 2000 | char dname[PATH_MAX]; |
0030e8d6 DW |
2001 | char *nm; |
2002 | int rv; | |
2003 | ||
2004 | name[0] = '\0'; | |
2005 | if (fstat(fd, &st) != 0) | |
2006 | return; | |
2007 | sprintf(path, "/sys/dev/block/%d:%d", | |
2008 | major(st.st_rdev), minor(st.st_rdev)); | |
2009 | ||
2010 | rv = readlink(path, dname, sizeof(dname)); | |
2011 | if (rv <= 0) | |
2012 | return; | |
2013 | ||
2014 | dname[rv] = '\0'; | |
2015 | nm = strrchr(dname, '/'); | |
2016 | nm++; | |
2017 | snprintf(name, MAX_RAID_SERIAL_LEN, "/dev/%s", nm); | |
2018 | } | |
2019 | ||
cdddbdbc DW |
2020 | extern int scsi_get_serial(int fd, void *buf, size_t buf_len); |
2021 | ||
2022 | static int imsm_read_serial(int fd, char *devname, | |
2023 | __u8 serial[MAX_RAID_SERIAL_LEN]) | |
2024 | { | |
2025 | unsigned char scsi_serial[255]; | |
cdddbdbc DW |
2026 | int rv; |
2027 | int rsp_len; | |
1f24f035 | 2028 | int len; |
316e2bf4 DW |
2029 | char *dest; |
2030 | char *src; | |
2031 | char *rsp_buf; | |
2032 | int i; | |
cdddbdbc DW |
2033 | |
2034 | memset(scsi_serial, 0, sizeof(scsi_serial)); | |
cdddbdbc | 2035 | |
f9ba0ff1 DW |
2036 | rv = scsi_get_serial(fd, scsi_serial, sizeof(scsi_serial)); |
2037 | ||
40ebbb9c | 2038 | if (rv && check_env("IMSM_DEVNAME_AS_SERIAL")) { |
f9ba0ff1 DW |
2039 | memset(serial, 0, MAX_RAID_SERIAL_LEN); |
2040 | fd2devname(fd, (char *) serial); | |
0030e8d6 DW |
2041 | return 0; |
2042 | } | |
2043 | ||
cdddbdbc DW |
2044 | if (rv != 0) { |
2045 | if (devname) | |
2046 | fprintf(stderr, | |
2047 | Name ": Failed to retrieve serial for %s\n", | |
2048 | devname); | |
2049 | return rv; | |
2050 | } | |
2051 | ||
2052 | rsp_len = scsi_serial[3]; | |
03cd4cc8 DW |
2053 | if (!rsp_len) { |
2054 | if (devname) | |
2055 | fprintf(stderr, | |
2056 | Name ": Failed to retrieve serial for %s\n", | |
2057 | devname); | |
2058 | return 2; | |
2059 | } | |
1f24f035 | 2060 | rsp_buf = (char *) &scsi_serial[4]; |
5c3db629 | 2061 | |
316e2bf4 DW |
2062 | /* trim all whitespace and non-printable characters and convert |
2063 | * ':' to ';' | |
2064 | */ | |
2065 | for (i = 0, dest = rsp_buf; i < rsp_len; i++) { | |
2066 | src = &rsp_buf[i]; | |
2067 | if (*src > 0x20) { | |
2068 | /* ':' is reserved for use in placeholder serial | |
2069 | * numbers for missing disks | |
2070 | */ | |
2071 | if (*src == ':') | |
2072 | *dest++ = ';'; | |
2073 | else | |
2074 | *dest++ = *src; | |
2075 | } | |
2076 | } | |
2077 | len = dest - rsp_buf; | |
2078 | dest = rsp_buf; | |
2079 | ||
2080 | /* truncate leading characters */ | |
2081 | if (len > MAX_RAID_SERIAL_LEN) { | |
2082 | dest += len - MAX_RAID_SERIAL_LEN; | |
1f24f035 | 2083 | len = MAX_RAID_SERIAL_LEN; |
316e2bf4 | 2084 | } |
5c3db629 | 2085 | |
5c3db629 | 2086 | memset(serial, 0, MAX_RAID_SERIAL_LEN); |
316e2bf4 | 2087 | memcpy(serial, dest, len); |
cdddbdbc DW |
2088 | |
2089 | return 0; | |
2090 | } | |
2091 | ||
1f24f035 DW |
2092 | static int serialcmp(__u8 *s1, __u8 *s2) |
2093 | { | |
2094 | return strncmp((char *) s1, (char *) s2, MAX_RAID_SERIAL_LEN); | |
2095 | } | |
2096 | ||
2097 | static void serialcpy(__u8 *dest, __u8 *src) | |
2098 | { | |
2099 | strncpy((char *) dest, (char *) src, MAX_RAID_SERIAL_LEN); | |
2100 | } | |
2101 | ||
1799c9e8 | 2102 | #ifndef MDASSEMBLE |
54c2c1ea DW |
2103 | static struct dl *serial_to_dl(__u8 *serial, struct intel_super *super) |
2104 | { | |
2105 | struct dl *dl; | |
2106 | ||
2107 | for (dl = super->disks; dl; dl = dl->next) | |
2108 | if (serialcmp(dl->serial, serial) == 0) | |
2109 | break; | |
2110 | ||
2111 | return dl; | |
2112 | } | |
1799c9e8 | 2113 | #endif |
54c2c1ea | 2114 | |
a2b97981 DW |
2115 | static struct imsm_disk * |
2116 | __serial_to_disk(__u8 *serial, struct imsm_super *mpb, int *idx) | |
2117 | { | |
2118 | int i; | |
2119 | ||
2120 | for (i = 0; i < mpb->num_disks; i++) { | |
2121 | struct imsm_disk *disk = __get_imsm_disk(mpb, i); | |
2122 | ||
2123 | if (serialcmp(disk->serial, serial) == 0) { | |
2124 | if (idx) | |
2125 | *idx = i; | |
2126 | return disk; | |
2127 | } | |
2128 | } | |
2129 | ||
2130 | return NULL; | |
2131 | } | |
2132 | ||
cdddbdbc DW |
2133 | static int |
2134 | load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd) | |
2135 | { | |
a2b97981 | 2136 | struct imsm_disk *disk; |
cdddbdbc DW |
2137 | struct dl *dl; |
2138 | struct stat stb; | |
cdddbdbc | 2139 | int rv; |
a2b97981 | 2140 | char name[40]; |
d23fe947 DW |
2141 | __u8 serial[MAX_RAID_SERIAL_LEN]; |
2142 | ||
2143 | rv = imsm_read_serial(fd, devname, serial); | |
2144 | ||
2145 | if (rv != 0) | |
2146 | return 2; | |
2147 | ||
a2b97981 | 2148 | dl = calloc(1, sizeof(*dl)); |
b9f594fe | 2149 | if (!dl) { |
cdddbdbc DW |
2150 | if (devname) |
2151 | fprintf(stderr, | |
2152 | Name ": failed to allocate disk buffer for %s\n", | |
2153 | devname); | |
2154 | return 2; | |
2155 | } | |
cdddbdbc | 2156 | |
a2b97981 DW |
2157 | fstat(fd, &stb); |
2158 | dl->major = major(stb.st_rdev); | |
2159 | dl->minor = minor(stb.st_rdev); | |
2160 | dl->next = super->disks; | |
2161 | dl->fd = keep_fd ? fd : -1; | |
2162 | assert(super->disks == NULL); | |
2163 | super->disks = dl; | |
2164 | serialcpy(dl->serial, serial); | |
2165 | dl->index = -2; | |
2166 | dl->e = NULL; | |
2167 | fd2devname(fd, name); | |
2168 | if (devname) | |
2169 | dl->devname = strdup(devname); | |
2170 | else | |
2171 | dl->devname = strdup(name); | |
cdddbdbc | 2172 | |
d23fe947 | 2173 | /* look up this disk's index in the current anchor */ |
a2b97981 DW |
2174 | disk = __serial_to_disk(dl->serial, super->anchor, &dl->index); |
2175 | if (disk) { | |
2176 | dl->disk = *disk; | |
2177 | /* only set index on disks that are a member of a | |
2178 | * populated contianer, i.e. one with raid_devs | |
2179 | */ | |
2180 | if (is_failed(&dl->disk)) | |
3f6efecc | 2181 | dl->index = -2; |
a2b97981 DW |
2182 | else if (is_spare(&dl->disk)) |
2183 | dl->index = -1; | |
3f6efecc DW |
2184 | } |
2185 | ||
949c47a0 DW |
2186 | return 0; |
2187 | } | |
2188 | ||
0e600426 | 2189 | #ifndef MDASSEMBLE |
0c046afd DW |
2190 | /* When migrating map0 contains the 'destination' state while map1 |
2191 | * contains the current state. When not migrating map0 contains the | |
2192 | * current state. This routine assumes that map[0].map_state is set to | |
2193 | * the current array state before being called. | |
2194 | * | |
2195 | * Migration is indicated by one of the following states | |
2196 | * 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed) | |
e3bba0e0 | 2197 | * 2/ Initialize (migr_state=1 migr_type=MIGR_INIT map0state=normal |
0c046afd | 2198 | * map1state=unitialized) |
1484e727 | 2199 | * 3/ Repair (Resync) (migr_state=1 migr_type=MIGR_REPAIR map0state=normal |
0c046afd | 2200 | * map1state=normal) |
e3bba0e0 | 2201 | * 4/ Rebuild (migr_state=1 migr_type=MIGR_REBUILD map0state=normal |
0c046afd DW |
2202 | * map1state=degraded) |
2203 | */ | |
0556e1a2 | 2204 | static void migrate(struct imsm_dev *dev, __u8 to_state, int migr_type) |
3393c6af | 2205 | { |
0c046afd | 2206 | struct imsm_map *dest; |
3393c6af DW |
2207 | struct imsm_map *src = get_imsm_map(dev, 0); |
2208 | ||
0c046afd | 2209 | dev->vol.migr_state = 1; |
1484e727 | 2210 | set_migr_type(dev, migr_type); |
f8f603f1 | 2211 | dev->vol.curr_migr_unit = 0; |
0c046afd DW |
2212 | dest = get_imsm_map(dev, 1); |
2213 | ||
0556e1a2 | 2214 | /* duplicate and then set the target end state in map[0] */ |
3393c6af | 2215 | memcpy(dest, src, sizeof_imsm_map(src)); |
28bce06f AK |
2216 | if ((migr_type == MIGR_REBUILD) || |
2217 | (migr_type == MIGR_GEN_MIGR)) { | |
0556e1a2 DW |
2218 | __u32 ord; |
2219 | int i; | |
2220 | ||
2221 | for (i = 0; i < src->num_members; i++) { | |
2222 | ord = __le32_to_cpu(src->disk_ord_tbl[i]); | |
2223 | set_imsm_ord_tbl_ent(src, i, ord_to_idx(ord)); | |
2224 | } | |
2225 | } | |
2226 | ||
0c046afd | 2227 | src->map_state = to_state; |
949c47a0 | 2228 | } |
f8f603f1 DW |
2229 | |
2230 | static void end_migration(struct imsm_dev *dev, __u8 map_state) | |
2231 | { | |
2232 | struct imsm_map *map = get_imsm_map(dev, 0); | |
0556e1a2 | 2233 | struct imsm_map *prev = get_imsm_map(dev, dev->vol.migr_state); |
28bce06f | 2234 | int i, j; |
0556e1a2 DW |
2235 | |
2236 | /* merge any IMSM_ORD_REBUILD bits that were not successfully | |
2237 | * completed in the last migration. | |
2238 | * | |
28bce06f | 2239 | * FIXME add support for raid-level-migration |
0556e1a2 DW |
2240 | */ |
2241 | for (i = 0; i < prev->num_members; i++) | |
28bce06f AK |
2242 | for (j = 0; j < map->num_members; j++) |
2243 | /* during online capacity expansion | |
2244 | * disks position can be changed if takeover is used | |
2245 | */ | |
2246 | if (ord_to_idx(map->disk_ord_tbl[j]) == | |
2247 | ord_to_idx(prev->disk_ord_tbl[i])) { | |
2248 | map->disk_ord_tbl[j] |= prev->disk_ord_tbl[i]; | |
2249 | break; | |
2250 | } | |
f8f603f1 DW |
2251 | |
2252 | dev->vol.migr_state = 0; | |
28bce06f | 2253 | dev->vol.migr_type = 0; |
f8f603f1 DW |
2254 | dev->vol.curr_migr_unit = 0; |
2255 | map->map_state = map_state; | |
2256 | } | |
0e600426 | 2257 | #endif |
949c47a0 DW |
2258 | |
2259 | static int parse_raid_devices(struct intel_super *super) | |
2260 | { | |
2261 | int i; | |
2262 | struct imsm_dev *dev_new; | |
4d7b1503 DW |
2263 | size_t len, len_migr; |
2264 | size_t space_needed = 0; | |
2265 | struct imsm_super *mpb = super->anchor; | |
949c47a0 DW |
2266 | |
2267 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
2268 | struct imsm_dev *dev_iter = __get_imsm_dev(super->anchor, i); | |
ba2de7ba | 2269 | struct intel_dev *dv; |
949c47a0 | 2270 | |
4d7b1503 DW |
2271 | len = sizeof_imsm_dev(dev_iter, 0); |
2272 | len_migr = sizeof_imsm_dev(dev_iter, 1); | |
2273 | if (len_migr > len) | |
2274 | space_needed += len_migr - len; | |
2275 | ||
ba2de7ba DW |
2276 | dv = malloc(sizeof(*dv)); |
2277 | if (!dv) | |
2278 | return 1; | |
4d7b1503 | 2279 | dev_new = malloc(len_migr); |
ba2de7ba DW |
2280 | if (!dev_new) { |
2281 | free(dv); | |
949c47a0 | 2282 | return 1; |
ba2de7ba | 2283 | } |
949c47a0 | 2284 | imsm_copy_dev(dev_new, dev_iter); |
ba2de7ba DW |
2285 | dv->dev = dev_new; |
2286 | dv->index = i; | |
2287 | dv->next = super->devlist; | |
2288 | super->devlist = dv; | |
949c47a0 | 2289 | } |
cdddbdbc | 2290 | |
4d7b1503 DW |
2291 | /* ensure that super->buf is large enough when all raid devices |
2292 | * are migrating | |
2293 | */ | |
2294 | if (__le32_to_cpu(mpb->mpb_size) + space_needed > super->len) { | |
2295 | void *buf; | |
2296 | ||
2297 | len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + space_needed, 512); | |
2298 | if (posix_memalign(&buf, 512, len) != 0) | |
2299 | return 1; | |
2300 | ||
1f45a8ad DW |
2301 | memcpy(buf, super->buf, super->len); |
2302 | memset(buf + super->len, 0, len - super->len); | |
4d7b1503 DW |
2303 | free(super->buf); |
2304 | super->buf = buf; | |
2305 | super->len = len; | |
2306 | } | |
2307 | ||
cdddbdbc DW |
2308 | return 0; |
2309 | } | |
2310 | ||
604b746f JD |
2311 | /* retrieve a pointer to the bbm log which starts after all raid devices */ |
2312 | struct bbm_log *__get_imsm_bbm_log(struct imsm_super *mpb) | |
2313 | { | |
2314 | void *ptr = NULL; | |
2315 | ||
2316 | if (__le32_to_cpu(mpb->bbm_log_size)) { | |
2317 | ptr = mpb; | |
2318 | ptr += mpb->mpb_size - __le32_to_cpu(mpb->bbm_log_size); | |
2319 | } | |
2320 | ||
2321 | return ptr; | |
2322 | } | |
2323 | ||
d23fe947 | 2324 | static void __free_imsm(struct intel_super *super, int free_disks); |
9ca2c81c | 2325 | |
cdddbdbc DW |
2326 | /* load_imsm_mpb - read matrix metadata |
2327 | * allocates super->mpb to be freed by free_super | |
2328 | */ | |
2329 | static int load_imsm_mpb(int fd, struct intel_super *super, char *devname) | |
2330 | { | |
2331 | unsigned long long dsize; | |
cdddbdbc DW |
2332 | unsigned long long sectors; |
2333 | struct stat; | |
6416d527 | 2334 | struct imsm_super *anchor; |
cdddbdbc DW |
2335 | __u32 check_sum; |
2336 | ||
cdddbdbc | 2337 | get_dev_size(fd, NULL, &dsize); |
64436f06 N |
2338 | if (dsize < 1024) { |
2339 | if (devname) | |
2340 | fprintf(stderr, | |
2341 | Name ": %s: device to small for imsm\n", | |
2342 | devname); | |
2343 | return 1; | |
2344 | } | |
cdddbdbc DW |
2345 | |
2346 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) { | |
2347 | if (devname) | |
2348 | fprintf(stderr, | |
2349 | Name ": Cannot seek to anchor block on %s: %s\n", | |
2350 | devname, strerror(errno)); | |
2351 | return 1; | |
2352 | } | |
2353 | ||
949c47a0 | 2354 | if (posix_memalign((void**)&anchor, 512, 512) != 0) { |
ad97895e DW |
2355 | if (devname) |
2356 | fprintf(stderr, | |
2357 | Name ": Failed to allocate imsm anchor buffer" | |
2358 | " on %s\n", devname); | |
2359 | return 1; | |
2360 | } | |
949c47a0 | 2361 | if (read(fd, anchor, 512) != 512) { |
cdddbdbc DW |
2362 | if (devname) |
2363 | fprintf(stderr, | |
2364 | Name ": Cannot read anchor block on %s: %s\n", | |
2365 | devname, strerror(errno)); | |
6416d527 | 2366 | free(anchor); |
cdddbdbc DW |
2367 | return 1; |
2368 | } | |
2369 | ||
6416d527 | 2370 | if (strncmp((char *) anchor->sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) { |
cdddbdbc DW |
2371 | if (devname) |
2372 | fprintf(stderr, | |
2373 | Name ": no IMSM anchor on %s\n", devname); | |
6416d527 | 2374 | free(anchor); |
cdddbdbc DW |
2375 | return 2; |
2376 | } | |
2377 | ||
d23fe947 | 2378 | __free_imsm(super, 0); |
949c47a0 DW |
2379 | super->len = ROUND_UP(anchor->mpb_size, 512); |
2380 | if (posix_memalign(&super->buf, 512, super->len) != 0) { | |
cdddbdbc DW |
2381 | if (devname) |
2382 | fprintf(stderr, | |
2383 | Name ": unable to allocate %zu byte mpb buffer\n", | |
949c47a0 | 2384 | super->len); |
6416d527 | 2385 | free(anchor); |
cdddbdbc DW |
2386 | return 2; |
2387 | } | |
949c47a0 | 2388 | memcpy(super->buf, anchor, 512); |
cdddbdbc | 2389 | |
6416d527 NB |
2390 | sectors = mpb_sectors(anchor) - 1; |
2391 | free(anchor); | |
949c47a0 | 2392 | if (!sectors) { |
ecf45690 DW |
2393 | check_sum = __gen_imsm_checksum(super->anchor); |
2394 | if (check_sum != __le32_to_cpu(super->anchor->check_sum)) { | |
2395 | if (devname) | |
2396 | fprintf(stderr, | |
2397 | Name ": IMSM checksum %x != %x on %s\n", | |
2398 | check_sum, | |
2399 | __le32_to_cpu(super->anchor->check_sum), | |
2400 | devname); | |
2401 | return 2; | |
2402 | } | |
2403 | ||
a2b97981 | 2404 | return 0; |
949c47a0 | 2405 | } |
cdddbdbc DW |
2406 | |
2407 | /* read the extended mpb */ | |
2408 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) { | |
2409 | if (devname) | |
2410 | fprintf(stderr, | |
2411 | Name ": Cannot seek to extended mpb on %s: %s\n", | |
2412 | devname, strerror(errno)); | |
2413 | return 1; | |
2414 | } | |
2415 | ||
f21e18ca | 2416 | if ((unsigned)read(fd, super->buf + 512, super->len - 512) != super->len - 512) { |
cdddbdbc DW |
2417 | if (devname) |
2418 | fprintf(stderr, | |
2419 | Name ": Cannot read extended mpb on %s: %s\n", | |
2420 | devname, strerror(errno)); | |
2421 | return 2; | |
2422 | } | |
2423 | ||
949c47a0 DW |
2424 | check_sum = __gen_imsm_checksum(super->anchor); |
2425 | if (check_sum != __le32_to_cpu(super->anchor->check_sum)) { | |
cdddbdbc DW |
2426 | if (devname) |
2427 | fprintf(stderr, | |
2428 | Name ": IMSM checksum %x != %x on %s\n", | |
949c47a0 | 2429 | check_sum, __le32_to_cpu(super->anchor->check_sum), |
cdddbdbc | 2430 | devname); |
db575f3b | 2431 | return 3; |
cdddbdbc DW |
2432 | } |
2433 | ||
604b746f JD |
2434 | /* FIXME the BBM log is disk specific so we cannot use this global |
2435 | * buffer for all disks. Ok for now since we only look at the global | |
2436 | * bbm_log_size parameter to gate assembly | |
2437 | */ | |
2438 | super->bbm_log = __get_imsm_bbm_log(super->anchor); | |
2439 | ||
a2b97981 DW |
2440 | return 0; |
2441 | } | |
2442 | ||
2443 | static int | |
2444 | load_and_parse_mpb(int fd, struct intel_super *super, char *devname, int keep_fd) | |
2445 | { | |
2446 | int err; | |
2447 | ||
2448 | err = load_imsm_mpb(fd, super, devname); | |
2449 | if (err) | |
2450 | return err; | |
2451 | err = load_imsm_disk(fd, super, devname, keep_fd); | |
2452 | if (err) | |
2453 | return err; | |
2454 | err = parse_raid_devices(super); | |
4d7b1503 | 2455 | |
a2b97981 | 2456 | return err; |
cdddbdbc DW |
2457 | } |
2458 | ||
ae6aad82 DW |
2459 | static void __free_imsm_disk(struct dl *d) |
2460 | { | |
2461 | if (d->fd >= 0) | |
2462 | close(d->fd); | |
2463 | if (d->devname) | |
2464 | free(d->devname); | |
0dcecb2e DW |
2465 | if (d->e) |
2466 | free(d->e); | |
ae6aad82 DW |
2467 | free(d); |
2468 | ||
2469 | } | |
1a64be56 | 2470 | |
cdddbdbc DW |
2471 | static void free_imsm_disks(struct intel_super *super) |
2472 | { | |
47ee5a45 | 2473 | struct dl *d; |
cdddbdbc | 2474 | |
47ee5a45 DW |
2475 | while (super->disks) { |
2476 | d = super->disks; | |
cdddbdbc | 2477 | super->disks = d->next; |
ae6aad82 | 2478 | __free_imsm_disk(d); |
cdddbdbc | 2479 | } |
47ee5a45 DW |
2480 | while (super->missing) { |
2481 | d = super->missing; | |
2482 | super->missing = d->next; | |
2483 | __free_imsm_disk(d); | |
2484 | } | |
2485 | ||
cdddbdbc DW |
2486 | } |
2487 | ||
9ca2c81c | 2488 | /* free all the pieces hanging off of a super pointer */ |
d23fe947 | 2489 | static void __free_imsm(struct intel_super *super, int free_disks) |
cdddbdbc | 2490 | { |
9ca2c81c | 2491 | if (super->buf) { |
949c47a0 | 2492 | free(super->buf); |
9ca2c81c DW |
2493 | super->buf = NULL; |
2494 | } | |
d23fe947 DW |
2495 | if (free_disks) |
2496 | free_imsm_disks(super); | |
ba2de7ba | 2497 | free_devlist(super); |
88c32bb1 DW |
2498 | if (super->hba) { |
2499 | free((void *) super->hba); | |
2500 | super->hba = NULL; | |
2501 | } | |
cdddbdbc DW |
2502 | } |
2503 | ||
9ca2c81c DW |
2504 | static void free_imsm(struct intel_super *super) |
2505 | { | |
d23fe947 | 2506 | __free_imsm(super, 1); |
9ca2c81c DW |
2507 | free(super); |
2508 | } | |
cdddbdbc DW |
2509 | |
2510 | static void free_super_imsm(struct supertype *st) | |
2511 | { | |
2512 | struct intel_super *super = st->sb; | |
2513 | ||
2514 | if (!super) | |
2515 | return; | |
2516 | ||
2517 | free_imsm(super); | |
2518 | st->sb = NULL; | |
2519 | } | |
2520 | ||
49133e57 | 2521 | static struct intel_super *alloc_super(void) |
c2c087e6 DW |
2522 | { |
2523 | struct intel_super *super = malloc(sizeof(*super)); | |
2524 | ||
2525 | if (super) { | |
2526 | memset(super, 0, sizeof(*super)); | |
bf5a934a | 2527 | super->current_vol = -1; |
0dcecb2e | 2528 | super->create_offset = ~((__u32 ) 0); |
88c32bb1 DW |
2529 | if (!check_env("IMSM_NO_PLATFORM")) |
2530 | super->orom = find_imsm_orom(); | |
cceebc67 | 2531 | if (super->orom && !check_env("IMSM_TEST_OROM")) { |
88c32bb1 DW |
2532 | struct sys_dev *list, *ent; |
2533 | ||
2534 | /* find the first intel ahci controller */ | |
2535 | list = find_driver_devices("pci", "ahci"); | |
2536 | for (ent = list; ent; ent = ent->next) | |
2537 | if (devpath_to_vendor(ent->path) == 0x8086) | |
2538 | break; | |
2539 | if (ent) { | |
2540 | super->hba = ent->path; | |
2541 | ent->path = NULL; | |
2542 | } | |
2543 | free_sys_dev(&list); | |
2544 | } | |
c2c087e6 DW |
2545 | } |
2546 | ||
2547 | return super; | |
2548 | } | |
2549 | ||
cdddbdbc | 2550 | #ifndef MDASSEMBLE |
47ee5a45 DW |
2551 | /* find_missing - helper routine for load_super_imsm_all that identifies |
2552 | * disks that have disappeared from the system. This routine relies on | |
2553 | * the mpb being uptodate, which it is at load time. | |
2554 | */ | |
2555 | static int find_missing(struct intel_super *super) | |
2556 | { | |
2557 | int i; | |
2558 | struct imsm_super *mpb = super->anchor; | |
2559 | struct dl *dl; | |
2560 | struct imsm_disk *disk; | |
47ee5a45 DW |
2561 | |
2562 | for (i = 0; i < mpb->num_disks; i++) { | |
2563 | disk = __get_imsm_disk(mpb, i); | |
54c2c1ea | 2564 | dl = serial_to_dl(disk->serial, super); |
47ee5a45 DW |
2565 | if (dl) |
2566 | continue; | |
47ee5a45 DW |
2567 | |
2568 | dl = malloc(sizeof(*dl)); | |
2569 | if (!dl) | |
2570 | return 1; | |
2571 | dl->major = 0; | |
2572 | dl->minor = 0; | |
2573 | dl->fd = -1; | |
2574 | dl->devname = strdup("missing"); | |
2575 | dl->index = i; | |
2576 | serialcpy(dl->serial, disk->serial); | |
2577 | dl->disk = *disk; | |
689c9bf3 | 2578 | dl->e = NULL; |
47ee5a45 DW |
2579 | dl->next = super->missing; |
2580 | super->missing = dl; | |
2581 | } | |
2582 | ||
2583 | return 0; | |
2584 | } | |
2585 | ||
a2b97981 DW |
2586 | static struct intel_disk *disk_list_get(__u8 *serial, struct intel_disk *disk_list) |
2587 | { | |
2588 | struct intel_disk *idisk = disk_list; | |
2589 | ||
2590 | while (idisk) { | |
2591 | if (serialcmp(idisk->disk.serial, serial) == 0) | |
2592 | break; | |
2593 | idisk = idisk->next; | |
2594 | } | |
2595 | ||
2596 | return idisk; | |
2597 | } | |
2598 | ||
2599 | static int __prep_thunderdome(struct intel_super **table, int tbl_size, | |
2600 | struct intel_super *super, | |
2601 | struct intel_disk **disk_list) | |
2602 | { | |
2603 | struct imsm_disk *d = &super->disks->disk; | |
2604 | struct imsm_super *mpb = super->anchor; | |
2605 | int i, j; | |
2606 | ||
2607 | for (i = 0; i < tbl_size; i++) { | |
2608 | struct imsm_super *tbl_mpb = table[i]->anchor; | |
2609 | struct imsm_disk *tbl_d = &table[i]->disks->disk; | |
2610 | ||
2611 | if (tbl_mpb->family_num == mpb->family_num) { | |
2612 | if (tbl_mpb->check_sum == mpb->check_sum) { | |
2613 | dprintf("%s: mpb from %d:%d matches %d:%d\n", | |
2614 | __func__, super->disks->major, | |
2615 | super->disks->minor, | |
2616 | table[i]->disks->major, | |
2617 | table[i]->disks->minor); | |
2618 | break; | |
2619 | } | |
2620 | ||
2621 | if (((is_configured(d) && !is_configured(tbl_d)) || | |
2622 | is_configured(d) == is_configured(tbl_d)) && | |
2623 | tbl_mpb->generation_num < mpb->generation_num) { | |
2624 | /* current version of the mpb is a | |
2625 | * better candidate than the one in | |
2626 | * super_table, but copy over "cross | |
2627 | * generational" status | |
2628 | */ | |
2629 | struct intel_disk *idisk; | |
2630 | ||
2631 | dprintf("%s: mpb from %d:%d replaces %d:%d\n", | |
2632 | __func__, super->disks->major, | |
2633 | super->disks->minor, | |
2634 | table[i]->disks->major, | |
2635 | table[i]->disks->minor); | |
2636 | ||
2637 | idisk = disk_list_get(tbl_d->serial, *disk_list); | |
2638 | if (idisk && is_failed(&idisk->disk)) | |
2639 | tbl_d->status |= FAILED_DISK; | |
2640 | break; | |
2641 | } else { | |
2642 | struct intel_disk *idisk; | |
2643 | struct imsm_disk *disk; | |
2644 | ||
2645 | /* tbl_mpb is more up to date, but copy | |
2646 | * over cross generational status before | |
2647 | * returning | |
2648 | */ | |
2649 | disk = __serial_to_disk(d->serial, mpb, NULL); | |
2650 | if (disk && is_failed(disk)) | |
2651 | d->status |= FAILED_DISK; | |
2652 | ||
2653 | idisk = disk_list_get(d->serial, *disk_list); | |
2654 | if (idisk) { | |
2655 | idisk->owner = i; | |
2656 | if (disk && is_configured(disk)) | |
2657 | idisk->disk.status |= CONFIGURED_DISK; | |
2658 | } | |
2659 | ||
2660 | dprintf("%s: mpb from %d:%d prefer %d:%d\n", | |
2661 | __func__, super->disks->major, | |
2662 | super->disks->minor, | |
2663 | table[i]->disks->major, | |
2664 | table[i]->disks->minor); | |
2665 | ||
2666 | return tbl_size; | |
2667 | } | |
2668 | } | |
2669 | } | |
2670 | ||
2671 | if (i >= tbl_size) | |
2672 | table[tbl_size++] = super; | |
2673 | else | |
2674 | table[i] = super; | |
2675 | ||
2676 | /* update/extend the merged list of imsm_disk records */ | |
2677 | for (j = 0; j < mpb->num_disks; j++) { | |
2678 | struct imsm_disk *disk = __get_imsm_disk(mpb, j); | |
2679 | struct intel_disk *idisk; | |
2680 | ||
2681 | idisk = disk_list_get(disk->serial, *disk_list); | |
2682 | if (idisk) { | |
2683 | idisk->disk.status |= disk->status; | |
2684 | if (is_configured(&idisk->disk) || | |
2685 | is_failed(&idisk->disk)) | |
2686 | idisk->disk.status &= ~(SPARE_DISK); | |
2687 | } else { | |
2688 | idisk = calloc(1, sizeof(*idisk)); | |
2689 | if (!idisk) | |
2690 | return -1; | |
2691 | idisk->owner = IMSM_UNKNOWN_OWNER; | |
2692 | idisk->disk = *disk; | |
2693 | idisk->next = *disk_list; | |
2694 | *disk_list = idisk; | |
2695 | } | |
2696 | ||
2697 | if (serialcmp(idisk->disk.serial, d->serial) == 0) | |
2698 | idisk->owner = i; | |
2699 | } | |
2700 | ||
2701 | return tbl_size; | |
2702 | } | |
2703 | ||
2704 | static struct intel_super * | |
2705 | validate_members(struct intel_super *super, struct intel_disk *disk_list, | |
2706 | const int owner) | |
2707 | { | |
2708 | struct imsm_super *mpb = super->anchor; | |
2709 | int ok_count = 0; | |
2710 | int i; | |
2711 | ||
2712 | for (i = 0; i < mpb->num_disks; i++) { | |
2713 | struct imsm_disk *disk = __get_imsm_disk(mpb, i); | |
2714 | struct intel_disk *idisk; | |
2715 | ||
2716 | idisk = disk_list_get(disk->serial, disk_list); | |
2717 | if (idisk) { | |
2718 | if (idisk->owner == owner || | |
2719 | idisk->owner == IMSM_UNKNOWN_OWNER) | |
2720 | ok_count++; | |
2721 | else | |
2722 | dprintf("%s: '%.16s' owner %d != %d\n", | |
2723 | __func__, disk->serial, idisk->owner, | |
2724 | owner); | |
2725 | } else { | |
2726 | dprintf("%s: unknown disk %x [%d]: %.16s\n", | |
2727 | __func__, __le32_to_cpu(mpb->family_num), i, | |
2728 | disk->serial); | |
2729 | break; | |
2730 | } | |
2731 | } | |
2732 | ||
2733 | if (ok_count == mpb->num_disks) | |
2734 | return super; | |
2735 | return NULL; | |
2736 | } | |
2737 | ||
2738 | static void show_conflicts(__u32 family_num, struct intel_super *super_list) | |
2739 | { | |
2740 | struct intel_super *s; | |
2741 | ||
2742 | for (s = super_list; s; s = s->next) { | |
2743 | if (family_num != s->anchor->family_num) | |
2744 | continue; | |
2745 | fprintf(stderr, "Conflict, offlining family %#x on '%s'\n", | |
2746 | __le32_to_cpu(family_num), s->disks->devname); | |
2747 | } | |
2748 | } | |
2749 | ||
2750 | static struct intel_super * | |
2751 | imsm_thunderdome(struct intel_super **super_list, int len) | |
2752 | { | |
2753 | struct intel_super *super_table[len]; | |
2754 | struct intel_disk *disk_list = NULL; | |
2755 | struct intel_super *champion, *spare; | |
2756 | struct intel_super *s, **del; | |
2757 | int tbl_size = 0; | |
2758 | int conflict; | |
2759 | int i; | |
2760 | ||
2761 | memset(super_table, 0, sizeof(super_table)); | |
2762 | for (s = *super_list; s; s = s->next) | |
2763 | tbl_size = __prep_thunderdome(super_table, tbl_size, s, &disk_list); | |
2764 | ||
2765 | for (i = 0; i < tbl_size; i++) { | |
2766 | struct imsm_disk *d; | |
2767 | struct intel_disk *idisk; | |
2768 | struct imsm_super *mpb = super_table[i]->anchor; | |
2769 | ||
2770 | s = super_table[i]; | |
2771 | d = &s->disks->disk; | |
2772 | ||
2773 | /* 'd' must appear in merged disk list for its | |
2774 | * configuration to be valid | |
2775 | */ | |
2776 | idisk = disk_list_get(d->serial, disk_list); | |
2777 | if (idisk && idisk->owner == i) | |
2778 | s = validate_members(s, disk_list, i); | |
2779 | else | |
2780 | s = NULL; | |
2781 | ||
2782 | if (!s) | |
2783 | dprintf("%s: marking family: %#x from %d:%d offline\n", | |
2784 | __func__, mpb->family_num, | |
2785 | super_table[i]->disks->major, | |
2786 | super_table[i]->disks->minor); | |
2787 | super_table[i] = s; | |
2788 | } | |
2789 | ||
2790 | /* This is where the mdadm implementation differs from the Windows | |
2791 | * driver which has no strict concept of a container. We can only | |
2792 | * assemble one family from a container, so when returning a prodigal | |
2793 | * array member to this system the code will not be able to disambiguate | |
2794 | * the container contents that should be assembled ("foreign" versus | |
2795 | * "local"). It requires user intervention to set the orig_family_num | |
2796 | * to a new value to establish a new container. The Windows driver in | |
2797 | * this situation fixes up the volume name in place and manages the | |
2798 | * foreign array as an independent entity. | |
2799 | */ | |
2800 | s = NULL; | |
2801 | spare = NULL; | |
2802 | conflict = 0; | |
2803 | for (i = 0; i < tbl_size; i++) { | |
2804 | struct intel_super *tbl_ent = super_table[i]; | |
2805 | int is_spare = 0; | |
2806 | ||
2807 | if (!tbl_ent) | |
2808 | continue; | |
2809 | ||
2810 | if (tbl_ent->anchor->num_raid_devs == 0) { | |
2811 | spare = tbl_ent; | |
2812 | is_spare = 1; | |
2813 | } | |
2814 | ||
2815 | if (s && !is_spare) { | |
2816 | show_conflicts(tbl_ent->anchor->family_num, *super_list); | |
2817 | conflict++; | |
2818 | } else if (!s && !is_spare) | |
2819 | s = tbl_ent; | |
2820 | } | |
2821 | ||
2822 | if (!s) | |
2823 | s = spare; | |
2824 | if (!s) { | |
2825 | champion = NULL; | |
2826 | goto out; | |
2827 | } | |
2828 | champion = s; | |
2829 | ||
2830 | if (conflict) | |
2831 | fprintf(stderr, "Chose family %#x on '%s', " | |
2832 | "assemble conflicts to new container with '--update=uuid'\n", | |
2833 | __le32_to_cpu(s->anchor->family_num), s->disks->devname); | |
2834 | ||
2835 | /* collect all dl's onto 'champion', and update them to | |
2836 | * champion's version of the status | |
2837 | */ | |
2838 | for (s = *super_list; s; s = s->next) { | |
2839 | struct imsm_super *mpb = champion->anchor; | |
2840 | struct dl *dl = s->disks; | |
2841 | ||
2842 | if (s == champion) | |
2843 | continue; | |
2844 | ||
2845 | for (i = 0; i < mpb->num_disks; i++) { | |
2846 | struct imsm_disk *disk; | |
2847 | ||
2848 | disk = __serial_to_disk(dl->serial, mpb, &dl->index); | |
2849 | if (disk) { | |
2850 | dl->disk = *disk; | |
2851 | /* only set index on disks that are a member of | |
2852 | * a populated contianer, i.e. one with | |
2853 | * raid_devs | |
2854 | */ | |
2855 | if (is_failed(&dl->disk)) | |
2856 | dl->index = -2; | |
2857 | else if (is_spare(&dl->disk)) | |
2858 | dl->index = -1; | |
2859 | break; | |
2860 | } | |
2861 | } | |
2862 | ||
2863 | if (i >= mpb->num_disks) { | |
2864 | struct intel_disk *idisk; | |
2865 | ||
2866 | idisk = disk_list_get(dl->serial, disk_list); | |
ecf408e9 | 2867 | if (idisk && is_spare(&idisk->disk) && |
a2b97981 DW |
2868 | !is_failed(&idisk->disk) && !is_configured(&idisk->disk)) |
2869 | dl->index = -1; | |
2870 | else { | |
2871 | dl->index = -2; | |
2872 | continue; | |
2873 | } | |
2874 | } | |
2875 | ||
2876 | dl->next = champion->disks; | |
2877 | champion->disks = dl; | |
2878 | s->disks = NULL; | |
2879 | } | |
2880 | ||
2881 | /* delete 'champion' from super_list */ | |
2882 | for (del = super_list; *del; ) { | |
2883 | if (*del == champion) { | |
2884 | *del = (*del)->next; | |
2885 | break; | |
2886 | } else | |
2887 | del = &(*del)->next; | |
2888 | } | |
2889 | champion->next = NULL; | |
2890 | ||
2891 | out: | |
2892 | while (disk_list) { | |
2893 | struct intel_disk *idisk = disk_list; | |
2894 | ||
2895 | disk_list = disk_list->next; | |
2896 | free(idisk); | |
2897 | } | |
2898 | ||
2899 | return champion; | |
2900 | } | |
2901 | ||
cdddbdbc | 2902 | static int load_super_imsm_all(struct supertype *st, int fd, void **sbp, |
e1902a7b | 2903 | char *devname) |
cdddbdbc DW |
2904 | { |
2905 | struct mdinfo *sra; | |
a2b97981 DW |
2906 | struct intel_super *super_list = NULL; |
2907 | struct intel_super *super = NULL; | |
db575f3b | 2908 | int devnum = fd2devnum(fd); |
a2b97981 | 2909 | struct mdinfo *sd; |
db575f3b | 2910 | int retry; |
a2b97981 DW |
2911 | int err = 0; |
2912 | int i; | |
dab4a513 DW |
2913 | |
2914 | /* check if 'fd' an opened container */ | |
b526e52d | 2915 | sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE); |
cdddbdbc DW |
2916 | if (!sra) |
2917 | return 1; | |
2918 | ||
2919 | if (sra->array.major_version != -1 || | |
2920 | sra->array.minor_version != -2 || | |
1602d52c AW |
2921 | strcmp(sra->text_version, "imsm") != 0) { |
2922 | err = 1; | |
2923 | goto error; | |
2924 | } | |
a2b97981 DW |
2925 | /* load all mpbs */ |
2926 | for (sd = sra->devs, i = 0; sd; sd = sd->next, i++) { | |
49133e57 | 2927 | struct intel_super *s = alloc_super(); |
7a6ecd55 | 2928 | char nm[32]; |
a2b97981 DW |
2929 | int dfd; |
2930 | ||
2931 | err = 1; | |
2932 | if (!s) | |
2933 | goto error; | |
2934 | s->next = super_list; | |
2935 | super_list = s; | |
cdddbdbc | 2936 | |
a2b97981 | 2937 | err = 2; |
cdddbdbc | 2938 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); |
e1902a7b | 2939 | dfd = dev_open(nm, O_RDWR); |
a2b97981 DW |
2940 | if (dfd < 0) |
2941 | goto error; | |
2942 | ||
e1902a7b | 2943 | err = load_and_parse_mpb(dfd, s, NULL, 1); |
db575f3b DW |
2944 | |
2945 | /* retry the load if we might have raced against mdmon */ | |
a2b97981 | 2946 | if (err == 3 && mdmon_running(devnum)) |
db575f3b DW |
2947 | for (retry = 0; retry < 3; retry++) { |
2948 | usleep(3000); | |
e1902a7b | 2949 | err = load_and_parse_mpb(dfd, s, NULL, 1); |
a2b97981 | 2950 | if (err != 3) |
db575f3b DW |
2951 | break; |
2952 | } | |
a2b97981 DW |
2953 | if (err) |
2954 | goto error; | |
cdddbdbc DW |
2955 | } |
2956 | ||
a2b97981 DW |
2957 | /* all mpbs enter, maybe one leaves */ |
2958 | super = imsm_thunderdome(&super_list, i); | |
2959 | if (!super) { | |
2960 | err = 1; | |
2961 | goto error; | |
cdddbdbc DW |
2962 | } |
2963 | ||
47ee5a45 DW |
2964 | if (find_missing(super) != 0) { |
2965 | free_imsm(super); | |
a2b97981 DW |
2966 | err = 2; |
2967 | goto error; | |
47ee5a45 | 2968 | } |
a2b97981 DW |
2969 | err = 0; |
2970 | ||
2971 | error: | |
2972 | while (super_list) { | |
2973 | struct intel_super *s = super_list; | |
2974 | ||
2975 | super_list = super_list->next; | |
2976 | free_imsm(s); | |
2977 | } | |
1602d52c | 2978 | sysfs_free(sra); |
a2b97981 DW |
2979 | |
2980 | if (err) | |
2981 | return err; | |
f7e7067b | 2982 | |
cdddbdbc | 2983 | *sbp = super; |
db575f3b | 2984 | st->container_dev = devnum; |
a2b97981 | 2985 | if (err == 0 && st->ss == NULL) { |
bf5a934a | 2986 | st->ss = &super_imsm; |
cdddbdbc DW |
2987 | st->minor_version = 0; |
2988 | st->max_devs = IMSM_MAX_DEVICES; | |
2989 | } | |
cdddbdbc DW |
2990 | return 0; |
2991 | } | |
2b959fbf N |
2992 | |
2993 | static int load_container_imsm(struct supertype *st, int fd, char *devname) | |
2994 | { | |
2995 | return load_super_imsm_all(st, fd, &st->sb, devname); | |
2996 | } | |
cdddbdbc DW |
2997 | #endif |
2998 | ||
2999 | static int load_super_imsm(struct supertype *st, int fd, char *devname) | |
3000 | { | |
3001 | struct intel_super *super; | |
3002 | int rv; | |
3003 | ||
3004 | #ifndef MDASSEMBLE | |
e1902a7b | 3005 | if (load_super_imsm_all(st, fd, &st->sb, devname) == 0) |
cdddbdbc DW |
3006 | return 0; |
3007 | #endif | |
3008 | ||
691c6ee1 N |
3009 | if (test_partition(fd)) |
3010 | /* IMSM not allowed on partitions */ | |
3011 | return 1; | |
3012 | ||
37424f13 DW |
3013 | free_super_imsm(st); |
3014 | ||
49133e57 | 3015 | super = alloc_super(); |
cdddbdbc DW |
3016 | if (!super) { |
3017 | fprintf(stderr, | |
3018 | Name ": malloc of %zu failed.\n", | |
3019 | sizeof(*super)); | |
3020 | return 1; | |
3021 | } | |
3022 | ||
a2b97981 | 3023 | rv = load_and_parse_mpb(fd, super, devname, 0); |
cdddbdbc DW |
3024 | |
3025 | if (rv) { | |
3026 | if (devname) | |
3027 | fprintf(stderr, | |
3028 | Name ": Failed to load all information " | |
3029 | "sections on %s\n", devname); | |
3030 | free_imsm(super); | |
3031 | return rv; | |
3032 | } | |
3033 | ||
3034 | st->sb = super; | |
3035 | if (st->ss == NULL) { | |
3036 | st->ss = &super_imsm; | |
3037 | st->minor_version = 0; | |
3038 | st->max_devs = IMSM_MAX_DEVICES; | |
3039 | } | |
cdddbdbc DW |
3040 | return 0; |
3041 | } | |
3042 | ||
ef6ffade DW |
3043 | static __u16 info_to_blocks_per_strip(mdu_array_info_t *info) |
3044 | { | |
3045 | if (info->level == 1) | |
3046 | return 128; | |
3047 | return info->chunk_size >> 9; | |
3048 | } | |
3049 | ||
ff596308 | 3050 | static __u32 info_to_num_data_stripes(mdu_array_info_t *info, int num_domains) |
ef6ffade DW |
3051 | { |
3052 | __u32 num_stripes; | |
3053 | ||
3054 | num_stripes = (info->size * 2) / info_to_blocks_per_strip(info); | |
ff596308 | 3055 | num_stripes /= num_domains; |
ef6ffade DW |
3056 | |
3057 | return num_stripes; | |
3058 | } | |
3059 | ||
fcfd9599 DW |
3060 | static __u32 info_to_blocks_per_member(mdu_array_info_t *info) |
3061 | { | |
4025c288 DW |
3062 | if (info->level == 1) |
3063 | return info->size * 2; | |
3064 | else | |
3065 | return (info->size * 2) & ~(info_to_blocks_per_strip(info) - 1); | |
fcfd9599 DW |
3066 | } |
3067 | ||
4d1313e9 DW |
3068 | static void imsm_update_version_info(struct intel_super *super) |
3069 | { | |
3070 | /* update the version and attributes */ | |
3071 | struct imsm_super *mpb = super->anchor; | |
3072 | char *version; | |
3073 | struct imsm_dev *dev; | |
3074 | struct imsm_map *map; | |
3075 | int i; | |
3076 | ||
3077 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
3078 | dev = get_imsm_dev(super, i); | |
3079 | map = get_imsm_map(dev, 0); | |
3080 | if (__le32_to_cpu(dev->size_high) > 0) | |
3081 | mpb->attributes |= MPB_ATTRIB_2TB; | |
3082 | ||
3083 | /* FIXME detect when an array spans a port multiplier */ | |
3084 | #if 0 | |
3085 | mpb->attributes |= MPB_ATTRIB_PM; | |
3086 | #endif | |
3087 | ||
3088 | if (mpb->num_raid_devs > 1 || | |
3089 | mpb->attributes != MPB_ATTRIB_CHECKSUM_VERIFY) { | |
3090 | version = MPB_VERSION_ATTRIBS; | |
3091 | switch (get_imsm_raid_level(map)) { | |
3092 | case 0: mpb->attributes |= MPB_ATTRIB_RAID0; break; | |
3093 | case 1: mpb->attributes |= MPB_ATTRIB_RAID1; break; | |
3094 | case 10: mpb->attributes |= MPB_ATTRIB_RAID10; break; | |
3095 | case 5: mpb->attributes |= MPB_ATTRIB_RAID5; break; | |
3096 | } | |
3097 | } else { | |
3098 | if (map->num_members >= 5) | |
3099 | version = MPB_VERSION_5OR6_DISK_ARRAY; | |
3100 | else if (dev->status == DEV_CLONE_N_GO) | |
3101 | version = MPB_VERSION_CNG; | |
3102 | else if (get_imsm_raid_level(map) == 5) | |
3103 | version = MPB_VERSION_RAID5; | |
3104 | else if (map->num_members >= 3) | |
3105 | version = MPB_VERSION_3OR4_DISK_ARRAY; | |
3106 | else if (get_imsm_raid_level(map) == 1) | |
3107 | version = MPB_VERSION_RAID1; | |
3108 | else | |
3109 | version = MPB_VERSION_RAID0; | |
3110 | } | |
3111 | strcpy(((char *) mpb->sig) + strlen(MPB_SIGNATURE), version); | |
3112 | } | |
3113 | } | |
3114 | ||
aa534678 DW |
3115 | static int check_name(struct intel_super *super, char *name, int quiet) |
3116 | { | |
3117 | struct imsm_super *mpb = super->anchor; | |
3118 | char *reason = NULL; | |
3119 | int i; | |
3120 | ||
3121 | if (strlen(name) > MAX_RAID_SERIAL_LEN) | |
3122 | reason = "must be 16 characters or less"; | |
3123 | ||
3124 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
3125 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
3126 | ||
3127 | if (strncmp((char *) dev->volume, name, MAX_RAID_SERIAL_LEN) == 0) { | |
3128 | reason = "already exists"; | |
3129 | break; | |
3130 | } | |
3131 | } | |
3132 | ||
3133 | if (reason && !quiet) | |
3134 | fprintf(stderr, Name ": imsm volume name %s\n", reason); | |
3135 | ||
3136 | return !reason; | |
3137 | } | |
3138 | ||
8b353278 DW |
3139 | static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info, |
3140 | unsigned long long size, char *name, | |
3141 | char *homehost, int *uuid) | |
cdddbdbc | 3142 | { |
c2c087e6 DW |
3143 | /* We are creating a volume inside a pre-existing container. |
3144 | * so st->sb is already set. | |
3145 | */ | |
3146 | struct intel_super *super = st->sb; | |
949c47a0 | 3147 | struct imsm_super *mpb = super->anchor; |
ba2de7ba | 3148 | struct intel_dev *dv; |
c2c087e6 DW |
3149 | struct imsm_dev *dev; |
3150 | struct imsm_vol *vol; | |
3151 | struct imsm_map *map; | |
3152 | int idx = mpb->num_raid_devs; | |
3153 | int i; | |
3154 | unsigned long long array_blocks; | |
2c092cad | 3155 | size_t size_old, size_new; |
ff596308 | 3156 | __u32 num_data_stripes; |
cdddbdbc | 3157 | |
88c32bb1 | 3158 | if (super->orom && mpb->num_raid_devs >= super->orom->vpa) { |
c2c087e6 | 3159 | fprintf(stderr, Name": This imsm-container already has the " |
88c32bb1 | 3160 | "maximum of %d volumes\n", super->orom->vpa); |
c2c087e6 DW |
3161 | return 0; |
3162 | } | |
3163 | ||
2c092cad DW |
3164 | /* ensure the mpb is large enough for the new data */ |
3165 | size_old = __le32_to_cpu(mpb->mpb_size); | |
3166 | size_new = disks_to_mpb_size(info->nr_disks); | |
3167 | if (size_new > size_old) { | |
3168 | void *mpb_new; | |
3169 | size_t size_round = ROUND_UP(size_new, 512); | |
3170 | ||
3171 | if (posix_memalign(&mpb_new, 512, size_round) != 0) { | |
3172 | fprintf(stderr, Name": could not allocate new mpb\n"); | |
3173 | return 0; | |
3174 | } | |
3175 | memcpy(mpb_new, mpb, size_old); | |
3176 | free(mpb); | |
3177 | mpb = mpb_new; | |
949c47a0 | 3178 | super->anchor = mpb_new; |
2c092cad DW |
3179 | mpb->mpb_size = __cpu_to_le32(size_new); |
3180 | memset(mpb_new + size_old, 0, size_round - size_old); | |
3181 | } | |
bf5a934a | 3182 | super->current_vol = idx; |
d23fe947 DW |
3183 | /* when creating the first raid device in this container set num_disks |
3184 | * to zero, i.e. delete this spare and add raid member devices in | |
3185 | * add_to_super_imsm_volume() | |
3186 | */ | |
3187 | if (super->current_vol == 0) | |
3188 | mpb->num_disks = 0; | |
5a038140 | 3189 | |
aa534678 DW |
3190 | if (!check_name(super, name, 0)) |
3191 | return 0; | |
ba2de7ba DW |
3192 | dv = malloc(sizeof(*dv)); |
3193 | if (!dv) { | |
3194 | fprintf(stderr, Name ": failed to allocate device list entry\n"); | |
3195 | return 0; | |
3196 | } | |
949c47a0 DW |
3197 | dev = malloc(sizeof(*dev) + sizeof(__u32) * (info->raid_disks - 1)); |
3198 | if (!dev) { | |
ba2de7ba | 3199 | free(dv); |
949c47a0 DW |
3200 | fprintf(stderr, Name": could not allocate raid device\n"); |
3201 | return 0; | |
3202 | } | |
c2c087e6 | 3203 | strncpy((char *) dev->volume, name, MAX_RAID_SERIAL_LEN); |
03bcbc65 DW |
3204 | if (info->level == 1) |
3205 | array_blocks = info_to_blocks_per_member(info); | |
3206 | else | |
3207 | array_blocks = calc_array_size(info->level, info->raid_disks, | |
3208 | info->layout, info->chunk_size, | |
3209 | info->size*2); | |
979d38be DW |
3210 | /* round array size down to closest MB */ |
3211 | array_blocks = (array_blocks >> SECT_PER_MB_SHIFT) << SECT_PER_MB_SHIFT; | |
3212 | ||
c2c087e6 DW |
3213 | dev->size_low = __cpu_to_le32((__u32) array_blocks); |
3214 | dev->size_high = __cpu_to_le32((__u32) (array_blocks >> 32)); | |
3215 | dev->status = __cpu_to_le32(0); | |
3216 | dev->reserved_blocks = __cpu_to_le32(0); | |
3217 | vol = &dev->vol; | |
3218 | vol->migr_state = 0; | |
1484e727 | 3219 | set_migr_type(dev, MIGR_INIT); |
c2c087e6 | 3220 | vol->dirty = 0; |
f8f603f1 | 3221 | vol->curr_migr_unit = 0; |
a965f303 | 3222 | map = get_imsm_map(dev, 0); |
0dcecb2e | 3223 | map->pba_of_lba0 = __cpu_to_le32(super->create_offset); |
fcfd9599 | 3224 | map->blocks_per_member = __cpu_to_le32(info_to_blocks_per_member(info)); |
ef6ffade | 3225 | map->blocks_per_strip = __cpu_to_le16(info_to_blocks_per_strip(info)); |
0556e1a2 | 3226 | map->failed_disk_num = ~0; |
c2c087e6 DW |
3227 | map->map_state = info->level ? IMSM_T_STATE_UNINITIALIZED : |
3228 | IMSM_T_STATE_NORMAL; | |
252d23c0 | 3229 | map->ddf = 1; |
ef6ffade DW |
3230 | |
3231 | if (info->level == 1 && info->raid_disks > 2) { | |
38950822 AW |
3232 | free(dev); |
3233 | free(dv); | |
ef6ffade DW |
3234 | fprintf(stderr, Name": imsm does not support more than 2 disks" |
3235 | "in a raid1 volume\n"); | |
3236 | return 0; | |
3237 | } | |
81062a36 DW |
3238 | |
3239 | map->raid_level = info->level; | |
4d1313e9 | 3240 | if (info->level == 10) { |
c2c087e6 | 3241 | map->raid_level = 1; |
4d1313e9 | 3242 | map->num_domains = info->raid_disks / 2; |
81062a36 DW |
3243 | } else if (info->level == 1) |
3244 | map->num_domains = info->raid_disks; | |
3245 | else | |
ff596308 | 3246 | map->num_domains = 1; |
81062a36 | 3247 | |
ff596308 DW |
3248 | num_data_stripes = info_to_num_data_stripes(info, map->num_domains); |
3249 | map->num_data_stripes = __cpu_to_le32(num_data_stripes); | |
ef6ffade | 3250 | |
c2c087e6 DW |
3251 | map->num_members = info->raid_disks; |
3252 | for (i = 0; i < map->num_members; i++) { | |
3253 | /* initialized in add_to_super */ | |
4eb26970 | 3254 | set_imsm_ord_tbl_ent(map, i, IMSM_ORD_REBUILD); |
c2c087e6 | 3255 | } |
949c47a0 | 3256 | mpb->num_raid_devs++; |
ba2de7ba DW |
3257 | |
3258 | dv->dev = dev; | |
3259 | dv->index = super->current_vol; | |
3260 | dv->next = super->devlist; | |
3261 | super->devlist = dv; | |
c2c087e6 | 3262 | |
4d1313e9 DW |
3263 | imsm_update_version_info(super); |
3264 | ||
c2c087e6 | 3265 | return 1; |
cdddbdbc DW |
3266 | } |
3267 | ||
bf5a934a DW |
3268 | static int init_super_imsm(struct supertype *st, mdu_array_info_t *info, |
3269 | unsigned long long size, char *name, | |
3270 | char *homehost, int *uuid) | |
3271 | { | |
3272 | /* This is primarily called by Create when creating a new array. | |
3273 | * We will then get add_to_super called for each component, and then | |
3274 | * write_init_super called to write it out to each device. | |
3275 | * For IMSM, Create can create on fresh devices or on a pre-existing | |
3276 | * array. | |
3277 | * To create on a pre-existing array a different method will be called. | |
3278 | * This one is just for fresh drives. | |
3279 | */ | |
3280 | struct intel_super *super; | |
3281 | struct imsm_super *mpb; | |
3282 | size_t mpb_size; | |
4d1313e9 | 3283 | char *version; |
bf5a934a | 3284 | |
bf5a934a | 3285 | if (st->sb) |
e683ca88 DW |
3286 | return init_super_imsm_volume(st, info, size, name, homehost, uuid); |
3287 | ||
3288 | if (info) | |
3289 | mpb_size = disks_to_mpb_size(info->nr_disks); | |
3290 | else | |
3291 | mpb_size = 512; | |
bf5a934a | 3292 | |
49133e57 | 3293 | super = alloc_super(); |
e683ca88 | 3294 | if (super && posix_memalign(&super->buf, 512, mpb_size) != 0) { |
bf5a934a | 3295 | free(super); |
e683ca88 DW |
3296 | super = NULL; |
3297 | } | |
3298 | if (!super) { | |
3299 | fprintf(stderr, Name | |
3300 | ": %s could not allocate superblock\n", __func__); | |
bf5a934a DW |
3301 | return 0; |
3302 | } | |
e683ca88 | 3303 | memset(super->buf, 0, mpb_size); |
ef649044 | 3304 | mpb = super->buf; |
e683ca88 DW |
3305 | mpb->mpb_size = __cpu_to_le32(mpb_size); |
3306 | st->sb = super; | |
3307 | ||
3308 | if (info == NULL) { | |
3309 | /* zeroing superblock */ | |
3310 | return 0; | |
3311 | } | |
bf5a934a | 3312 | |
4d1313e9 DW |
3313 | mpb->attributes = MPB_ATTRIB_CHECKSUM_VERIFY; |
3314 | ||
3315 | version = (char *) mpb->sig; | |
3316 | strcpy(version, MPB_SIGNATURE); | |
3317 | version += strlen(MPB_SIGNATURE); | |
3318 | strcpy(version, MPB_VERSION_RAID0); | |
bf5a934a | 3319 | |
bf5a934a DW |
3320 | return 1; |
3321 | } | |
3322 | ||
0e600426 | 3323 | #ifndef MDASSEMBLE |
f20c3968 | 3324 | static int add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk, |
bf5a934a DW |
3325 | int fd, char *devname) |
3326 | { | |
3327 | struct intel_super *super = st->sb; | |
d23fe947 | 3328 | struct imsm_super *mpb = super->anchor; |
bf5a934a DW |
3329 | struct dl *dl; |
3330 | struct imsm_dev *dev; | |
3331 | struct imsm_map *map; | |
4eb26970 | 3332 | int slot; |
bf5a934a | 3333 | |
949c47a0 | 3334 | dev = get_imsm_dev(super, super->current_vol); |
a965f303 | 3335 | map = get_imsm_map(dev, 0); |
bf5a934a | 3336 | |
208933a7 N |
3337 | if (! (dk->state & (1<<MD_DISK_SYNC))) { |
3338 | fprintf(stderr, Name ": %s: Cannot add spare devices to IMSM volume\n", | |
3339 | devname); | |
3340 | return 1; | |
3341 | } | |
3342 | ||
efb30e7f DW |
3343 | if (fd == -1) { |
3344 | /* we're doing autolayout so grab the pre-marked (in | |
3345 | * validate_geometry) raid_disk | |
3346 | */ | |
3347 | for (dl = super->disks; dl; dl = dl->next) | |
3348 | if (dl->raiddisk == dk->raid_disk) | |
3349 | break; | |
3350 | } else { | |
3351 | for (dl = super->disks; dl ; dl = dl->next) | |
3352 | if (dl->major == dk->major && | |
3353 | dl->minor == dk->minor) | |
3354 | break; | |
3355 | } | |
d23fe947 | 3356 | |
208933a7 N |
3357 | if (!dl) { |
3358 | fprintf(stderr, Name ": %s is not a member of the same container\n", devname); | |
f20c3968 | 3359 | return 1; |
208933a7 | 3360 | } |
bf5a934a | 3361 | |
d23fe947 DW |
3362 | /* add a pristine spare to the metadata */ |
3363 | if (dl->index < 0) { | |
3364 | dl->index = super->anchor->num_disks; | |
3365 | super->anchor->num_disks++; | |
3366 | } | |
4eb26970 DW |
3367 | /* Check the device has not already been added */ |
3368 | slot = get_imsm_disk_slot(map, dl->index); | |
3369 | if (slot >= 0 && | |
3370 | (get_imsm_ord_tbl_ent(dev, slot) & IMSM_ORD_REBUILD) == 0) { | |
3371 | fprintf(stderr, Name ": %s has been included in this array twice\n", | |
3372 | devname); | |
3373 | return 1; | |
3374 | } | |
be73972f | 3375 | set_imsm_ord_tbl_ent(map, dk->number, dl->index); |
ee5aad5a | 3376 | dl->disk.status = CONFIGURED_DISK; |
d23fe947 DW |
3377 | |
3378 | /* if we are creating the first raid device update the family number */ | |
3379 | if (super->current_vol == 0) { | |
3380 | __u32 sum; | |
3381 | struct imsm_dev *_dev = __get_imsm_dev(mpb, 0); | |
3382 | struct imsm_disk *_disk = __get_imsm_disk(mpb, dl->index); | |
3383 | ||
791b666a AW |
3384 | if (!_dev || !_disk) { |
3385 | fprintf(stderr, Name ": BUG mpb setup error\n"); | |
3386 | return 1; | |
3387 | } | |
d23fe947 DW |
3388 | *_dev = *dev; |
3389 | *_disk = dl->disk; | |
148acb7b DW |
3390 | sum = random32(); |
3391 | sum += __gen_imsm_checksum(mpb); | |
d23fe947 | 3392 | mpb->family_num = __cpu_to_le32(sum); |
148acb7b | 3393 | mpb->orig_family_num = mpb->family_num; |
d23fe947 | 3394 | } |
f20c3968 DW |
3395 | |
3396 | return 0; | |
bf5a934a DW |
3397 | } |
3398 | ||
f20c3968 | 3399 | static int add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk, |
cdddbdbc DW |
3400 | int fd, char *devname) |
3401 | { | |
c2c087e6 | 3402 | struct intel_super *super = st->sb; |
c2c087e6 DW |
3403 | struct dl *dd; |
3404 | unsigned long long size; | |
f2f27e63 | 3405 | __u32 id; |
c2c087e6 DW |
3406 | int rv; |
3407 | struct stat stb; | |
3408 | ||
88c32bb1 DW |
3409 | /* if we are on an RAID enabled platform check that the disk is |
3410 | * attached to the raid controller | |
3411 | */ | |
3412 | if (super->hba && !disk_attached_to_hba(fd, super->hba)) { | |
3413 | fprintf(stderr, | |
3414 | Name ": %s is not attached to the raid controller: %s\n", | |
3415 | devname ? : "disk", super->hba); | |
3416 | return 1; | |
3417 | } | |
3418 | ||
f20c3968 DW |
3419 | if (super->current_vol >= 0) |
3420 | return add_to_super_imsm_volume(st, dk, fd, devname); | |
bf5a934a | 3421 | |
c2c087e6 DW |
3422 | fstat(fd, &stb); |
3423 | dd = malloc(sizeof(*dd)); | |
b9f594fe | 3424 | if (!dd) { |
c2c087e6 DW |
3425 | fprintf(stderr, |
3426 | Name ": malloc failed %s:%d.\n", __func__, __LINE__); | |
f20c3968 | 3427 | return 1; |
c2c087e6 DW |
3428 | } |
3429 | memset(dd, 0, sizeof(*dd)); | |
3430 | dd->major = major(stb.st_rdev); | |
3431 | dd->minor = minor(stb.st_rdev); | |
b9f594fe | 3432 | dd->index = -1; |
c2c087e6 | 3433 | dd->devname = devname ? strdup(devname) : NULL; |
c2c087e6 | 3434 | dd->fd = fd; |
689c9bf3 | 3435 | dd->e = NULL; |
1a64be56 | 3436 | dd->action = DISK_ADD; |
c2c087e6 | 3437 | rv = imsm_read_serial(fd, devname, dd->serial); |
32ba9157 | 3438 | if (rv) { |
c2c087e6 | 3439 | fprintf(stderr, |
0030e8d6 | 3440 | Name ": failed to retrieve scsi serial, aborting\n"); |
949c47a0 | 3441 | free(dd); |
0030e8d6 | 3442 | abort(); |
c2c087e6 DW |
3443 | } |
3444 | ||
c2c087e6 DW |
3445 | get_dev_size(fd, NULL, &size); |
3446 | size /= 512; | |
1f24f035 | 3447 | serialcpy(dd->disk.serial, dd->serial); |
b9f594fe | 3448 | dd->disk.total_blocks = __cpu_to_le32(size); |
ee5aad5a | 3449 | dd->disk.status = SPARE_DISK; |
c2c087e6 | 3450 | if (sysfs_disk_to_scsi_id(fd, &id) == 0) |
b9f594fe | 3451 | dd->disk.scsi_id = __cpu_to_le32(id); |
c2c087e6 | 3452 | else |
b9f594fe | 3453 | dd->disk.scsi_id = __cpu_to_le32(0); |
43dad3d6 DW |
3454 | |
3455 | if (st->update_tail) { | |
1a64be56 LM |
3456 | dd->next = super->disk_mgmt_list; |
3457 | super->disk_mgmt_list = dd; | |
43dad3d6 DW |
3458 | } else { |
3459 | dd->next = super->disks; | |
3460 | super->disks = dd; | |
3461 | } | |
f20c3968 DW |
3462 | |
3463 | return 0; | |
cdddbdbc DW |
3464 | } |
3465 | ||
1a64be56 LM |
3466 | |
3467 | static int remove_from_super_imsm(struct supertype *st, mdu_disk_info_t *dk) | |
3468 | { | |
3469 | struct intel_super *super = st->sb; | |
3470 | struct dl *dd; | |
3471 | ||
3472 | /* remove from super works only in mdmon - for communication | |
3473 | * manager - monitor. Check if communication memory buffer | |
3474 | * is prepared. | |
3475 | */ | |
3476 | if (!st->update_tail) { | |
3477 | fprintf(stderr, | |
3478 | Name ": %s shall be used in mdmon context only" | |
3479 | "(line %d).\n", __func__, __LINE__); | |
3480 | return 1; | |
3481 | } | |
3482 | dd = malloc(sizeof(*dd)); | |
3483 | if (!dd) { | |
3484 | fprintf(stderr, | |
3485 | Name ": malloc failed %s:%d.\n", __func__, __LINE__); | |
3486 | return 1; | |
3487 | } | |
3488 | memset(dd, 0, sizeof(*dd)); | |
3489 | dd->major = dk->major; | |
3490 | dd->minor = dk->minor; | |
3491 | dd->index = -1; | |
3492 | dd->fd = -1; | |
3493 | dd->disk.status = SPARE_DISK; | |
3494 | dd->action = DISK_REMOVE; | |
3495 | ||
3496 | dd->next = super->disk_mgmt_list; | |
3497 | super->disk_mgmt_list = dd; | |
3498 | ||
3499 | ||
3500 | return 0; | |
3501 | } | |
3502 | ||
f796af5d DW |
3503 | static int store_imsm_mpb(int fd, struct imsm_super *mpb); |
3504 | ||
3505 | static union { | |
3506 | char buf[512]; | |
3507 | struct imsm_super anchor; | |
3508 | } spare_record __attribute__ ((aligned(512))); | |
c2c087e6 | 3509 | |
d23fe947 DW |
3510 | /* spare records have their own family number and do not have any defined raid |
3511 | * devices | |
3512 | */ | |
3513 | static int write_super_imsm_spares(struct intel_super *super, int doclose) | |
3514 | { | |
d23fe947 | 3515 | struct imsm_super *mpb = super->anchor; |
f796af5d | 3516 | struct imsm_super *spare = &spare_record.anchor; |
d23fe947 DW |
3517 | __u32 sum; |
3518 | struct dl *d; | |
3519 | ||
f796af5d DW |
3520 | spare->mpb_size = __cpu_to_le32(sizeof(struct imsm_super)), |
3521 | spare->generation_num = __cpu_to_le32(1UL), | |
3522 | spare->attributes = MPB_ATTRIB_CHECKSUM_VERIFY; | |
3523 | spare->num_disks = 1, | |
3524 | spare->num_raid_devs = 0, | |
3525 | spare->cache_size = mpb->cache_size, | |
3526 | spare->pwr_cycle_count = __cpu_to_le32(1), | |
3527 | ||
3528 | snprintf((char *) spare->sig, MAX_SIGNATURE_LENGTH, | |
3529 | MPB_SIGNATURE MPB_VERSION_RAID0); | |
d23fe947 DW |
3530 | |
3531 | for (d = super->disks; d; d = d->next) { | |
8796fdc4 | 3532 | if (d->index != -1) |
d23fe947 DW |
3533 | continue; |
3534 | ||
f796af5d DW |
3535 | spare->disk[0] = d->disk; |
3536 | sum = __gen_imsm_checksum(spare); | |
3537 | spare->family_num = __cpu_to_le32(sum); | |
3538 | spare->orig_family_num = 0; | |
3539 | sum = __gen_imsm_checksum(spare); | |
3540 | spare->check_sum = __cpu_to_le32(sum); | |
d23fe947 | 3541 | |
f796af5d | 3542 | if (store_imsm_mpb(d->fd, spare)) { |
d23fe947 DW |
3543 | fprintf(stderr, "%s: failed for device %d:%d %s\n", |
3544 | __func__, d->major, d->minor, strerror(errno)); | |
e74255d9 | 3545 | return 1; |
d23fe947 DW |
3546 | } |
3547 | if (doclose) { | |
3548 | close(d->fd); | |
3549 | d->fd = -1; | |
3550 | } | |
3551 | } | |
3552 | ||
e74255d9 | 3553 | return 0; |
d23fe947 DW |
3554 | } |
3555 | ||
36988a3d | 3556 | static int write_super_imsm(struct supertype *st, int doclose) |
cdddbdbc | 3557 | { |
36988a3d | 3558 | struct intel_super *super = st->sb; |
949c47a0 | 3559 | struct imsm_super *mpb = super->anchor; |
c2c087e6 DW |
3560 | struct dl *d; |
3561 | __u32 generation; | |
3562 | __u32 sum; | |
d23fe947 | 3563 | int spares = 0; |
949c47a0 | 3564 | int i; |
a48ac0a8 | 3565 | __u32 mpb_size = sizeof(struct imsm_super) - sizeof(struct imsm_disk); |
36988a3d | 3566 | int num_disks = 0; |
cdddbdbc | 3567 | |
c2c087e6 DW |
3568 | /* 'generation' is incremented everytime the metadata is written */ |
3569 | generation = __le32_to_cpu(mpb->generation_num); | |
3570 | generation++; | |
3571 | mpb->generation_num = __cpu_to_le32(generation); | |
3572 | ||
148acb7b DW |
3573 | /* fix up cases where previous mdadm releases failed to set |
3574 | * orig_family_num | |
3575 | */ | |
3576 | if (mpb->orig_family_num == 0) | |
3577 | mpb->orig_family_num = mpb->family_num; | |
3578 | ||
d23fe947 | 3579 | for (d = super->disks; d; d = d->next) { |
8796fdc4 | 3580 | if (d->index == -1) |
d23fe947 | 3581 | spares++; |
36988a3d | 3582 | else { |
d23fe947 | 3583 | mpb->disk[d->index] = d->disk; |
36988a3d AK |
3584 | num_disks++; |
3585 | } | |
d23fe947 | 3586 | } |
36988a3d | 3587 | for (d = super->missing; d; d = d->next) { |
47ee5a45 | 3588 | mpb->disk[d->index] = d->disk; |
36988a3d AK |
3589 | num_disks++; |
3590 | } | |
3591 | mpb->num_disks = num_disks; | |
3592 | mpb_size += sizeof(struct imsm_disk) * mpb->num_disks; | |
b9f594fe | 3593 | |
949c47a0 DW |
3594 | for (i = 0; i < mpb->num_raid_devs; i++) { |
3595 | struct imsm_dev *dev = __get_imsm_dev(mpb, i); | |
36988a3d AK |
3596 | struct imsm_dev *dev2 = get_imsm_dev(super, i); |
3597 | if (dev && dev2) { | |
3598 | imsm_copy_dev(dev, dev2); | |
3599 | mpb_size += sizeof_imsm_dev(dev, 0); | |
3600 | } | |
949c47a0 | 3601 | } |
a48ac0a8 DW |
3602 | mpb_size += __le32_to_cpu(mpb->bbm_log_size); |
3603 | mpb->mpb_size = __cpu_to_le32(mpb_size); | |
949c47a0 | 3604 | |
c2c087e6 | 3605 | /* recalculate checksum */ |
949c47a0 | 3606 | sum = __gen_imsm_checksum(mpb); |
c2c087e6 DW |
3607 | mpb->check_sum = __cpu_to_le32(sum); |
3608 | ||
d23fe947 | 3609 | /* write the mpb for disks that compose raid devices */ |
c2c087e6 | 3610 | for (d = super->disks; d ; d = d->next) { |
d23fe947 DW |
3611 | if (d->index < 0) |
3612 | continue; | |
f796af5d | 3613 | if (store_imsm_mpb(d->fd, mpb)) |
c2c087e6 DW |
3614 | fprintf(stderr, "%s: failed for device %d:%d %s\n", |
3615 | __func__, d->major, d->minor, strerror(errno)); | |
c2c087e6 DW |
3616 | if (doclose) { |
3617 | close(d->fd); | |
3618 | d->fd = -1; | |
3619 | } | |
3620 | } | |
3621 | ||
d23fe947 DW |
3622 | if (spares) |
3623 | return write_super_imsm_spares(super, doclose); | |
3624 | ||
e74255d9 | 3625 | return 0; |
c2c087e6 DW |
3626 | } |
3627 | ||
0e600426 | 3628 | |
9b1fb677 | 3629 | static int create_array(struct supertype *st, int dev_idx) |
43dad3d6 DW |
3630 | { |
3631 | size_t len; | |
3632 | struct imsm_update_create_array *u; | |
3633 | struct intel_super *super = st->sb; | |
9b1fb677 | 3634 | struct imsm_dev *dev = get_imsm_dev(super, dev_idx); |
54c2c1ea DW |
3635 | struct imsm_map *map = get_imsm_map(dev, 0); |
3636 | struct disk_info *inf; | |
3637 | struct imsm_disk *disk; | |
3638 | int i; | |
43dad3d6 | 3639 | |
54c2c1ea DW |
3640 | len = sizeof(*u) - sizeof(*dev) + sizeof_imsm_dev(dev, 0) + |
3641 | sizeof(*inf) * map->num_members; | |
43dad3d6 DW |
3642 | u = malloc(len); |
3643 | if (!u) { | |
3644 | fprintf(stderr, "%s: failed to allocate update buffer\n", | |
3645 | __func__); | |
3646 | return 1; | |
3647 | } | |
3648 | ||
3649 | u->type = update_create_array; | |
9b1fb677 | 3650 | u->dev_idx = dev_idx; |
43dad3d6 | 3651 | imsm_copy_dev(&u->dev, dev); |
54c2c1ea DW |
3652 | inf = get_disk_info(u); |
3653 | for (i = 0; i < map->num_members; i++) { | |
9b1fb677 DW |
3654 | int idx = get_imsm_disk_idx(dev, i); |
3655 | ||
54c2c1ea DW |
3656 | disk = get_imsm_disk(super, idx); |
3657 | serialcpy(inf[i].serial, disk->serial); | |
3658 | } | |
43dad3d6 DW |
3659 | append_metadata_update(st, u, len); |
3660 | ||
3661 | return 0; | |
3662 | } | |
3663 | ||
1a64be56 | 3664 | static int mgmt_disk(struct supertype *st) |
43dad3d6 DW |
3665 | { |
3666 | struct intel_super *super = st->sb; | |
3667 | size_t len; | |
1a64be56 | 3668 | struct imsm_update_add_remove_disk *u; |
43dad3d6 | 3669 | |
1a64be56 | 3670 | if (!super->disk_mgmt_list) |
43dad3d6 DW |
3671 | return 0; |
3672 | ||
3673 | len = sizeof(*u); | |
3674 | u = malloc(len); | |
3675 | if (!u) { | |
3676 | fprintf(stderr, "%s: failed to allocate update buffer\n", | |
3677 | __func__); | |
3678 | return 1; | |
3679 | } | |
3680 | ||
1a64be56 | 3681 | u->type = update_add_remove_disk; |
43dad3d6 DW |
3682 | append_metadata_update(st, u, len); |
3683 | ||
3684 | return 0; | |
3685 | } | |
3686 | ||
c2c087e6 DW |
3687 | static int write_init_super_imsm(struct supertype *st) |
3688 | { | |
9b1fb677 DW |
3689 | struct intel_super *super = st->sb; |
3690 | int current_vol = super->current_vol; | |
3691 | ||
3692 | /* we are done with current_vol reset it to point st at the container */ | |
3693 | super->current_vol = -1; | |
3694 | ||
8273f55e | 3695 | if (st->update_tail) { |
43dad3d6 DW |
3696 | /* queue the recently created array / added disk |
3697 | * as a metadata update */ | |
8273f55e | 3698 | struct dl *d; |
43dad3d6 | 3699 | int rv; |
8273f55e | 3700 | |
43dad3d6 | 3701 | /* determine if we are creating a volume or adding a disk */ |
9b1fb677 | 3702 | if (current_vol < 0) { |
1a64be56 LM |
3703 | /* in the mgmt (add/remove) disk case we are running |
3704 | * in mdmon context, so don't close fd's | |
43dad3d6 | 3705 | */ |
1a64be56 | 3706 | return mgmt_disk(st); |
43dad3d6 | 3707 | } else |
9b1fb677 | 3708 | rv = create_array(st, current_vol); |
8273f55e DW |
3709 | |
3710 | for (d = super->disks; d ; d = d->next) { | |
3711 | close(d->fd); | |
3712 | d->fd = -1; | |
3713 | } | |
3714 | ||
43dad3d6 | 3715 | return rv; |
d682f344 N |
3716 | } else { |
3717 | struct dl *d; | |
3718 | for (d = super->disks; d; d = d->next) | |
3719 | Kill(d->devname, NULL, 0, 1, 1); | |
36988a3d | 3720 | return write_super_imsm(st, 1); |
d682f344 | 3721 | } |
cdddbdbc | 3722 | } |
0e600426 | 3723 | #endif |
cdddbdbc | 3724 | |
e683ca88 | 3725 | static int store_super_imsm(struct supertype *st, int fd) |
cdddbdbc | 3726 | { |
e683ca88 DW |
3727 | struct intel_super *super = st->sb; |
3728 | struct imsm_super *mpb = super ? super->anchor : NULL; | |
551c80c1 | 3729 | |
e683ca88 | 3730 | if (!mpb) |
ad97895e DW |
3731 | return 1; |
3732 | ||
1799c9e8 | 3733 | #ifndef MDASSEMBLE |
e683ca88 | 3734 | return store_imsm_mpb(fd, mpb); |
1799c9e8 N |
3735 | #else |
3736 | return 1; | |
3737 | #endif | |
cdddbdbc DW |
3738 | } |
3739 | ||
0e600426 N |
3740 | static int imsm_bbm_log_size(struct imsm_super *mpb) |
3741 | { | |
3742 | return __le32_to_cpu(mpb->bbm_log_size); | |
3743 | } | |
3744 | ||
3745 | #ifndef MDASSEMBLE | |
cdddbdbc DW |
3746 | static int validate_geometry_imsm_container(struct supertype *st, int level, |
3747 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 3748 | unsigned long long size, char *dev, |
2c514b71 NB |
3749 | unsigned long long *freesize, |
3750 | int verbose) | |
cdddbdbc | 3751 | { |
c2c087e6 DW |
3752 | int fd; |
3753 | unsigned long long ldsize; | |
88c32bb1 | 3754 | const struct imsm_orom *orom; |
cdddbdbc | 3755 | |
c2c087e6 DW |
3756 | if (level != LEVEL_CONTAINER) |
3757 | return 0; | |
3758 | if (!dev) | |
3759 | return 1; | |
3760 | ||
88c32bb1 DW |
3761 | if (check_env("IMSM_NO_PLATFORM")) |
3762 | orom = NULL; | |
3763 | else | |
3764 | orom = find_imsm_orom(); | |
3765 | if (orom && raiddisks > orom->tds) { | |
3766 | if (verbose) | |
3767 | fprintf(stderr, Name ": %d exceeds maximum number of" | |
3768 | " platform supported disks: %d\n", | |
3769 | raiddisks, orom->tds); | |
3770 | return 0; | |
3771 | } | |
3772 | ||
c2c087e6 DW |
3773 | fd = open(dev, O_RDONLY|O_EXCL, 0); |
3774 | if (fd < 0) { | |
2c514b71 NB |
3775 | if (verbose) |
3776 | fprintf(stderr, Name ": imsm: Cannot open %s: %s\n", | |
3777 | dev, strerror(errno)); | |
c2c087e6 DW |
3778 | return 0; |
3779 | } | |
3780 | if (!get_dev_size(fd, dev, &ldsize)) { | |
3781 | close(fd); | |
3782 | return 0; | |
3783 | } | |
3784 | close(fd); | |
3785 | ||
3786 | *freesize = avail_size_imsm(st, ldsize >> 9); | |
3787 | ||
3788 | return 1; | |
cdddbdbc DW |
3789 | } |
3790 | ||
0dcecb2e DW |
3791 | static unsigned long long find_size(struct extent *e, int *idx, int num_extents) |
3792 | { | |
3793 | const unsigned long long base_start = e[*idx].start; | |
3794 | unsigned long long end = base_start + e[*idx].size; | |
3795 | int i; | |
3796 | ||
3797 | if (base_start == end) | |
3798 | return 0; | |
3799 | ||
3800 | *idx = *idx + 1; | |
3801 | for (i = *idx; i < num_extents; i++) { | |
3802 | /* extend overlapping extents */ | |
3803 | if (e[i].start >= base_start && | |
3804 | e[i].start <= end) { | |
3805 | if (e[i].size == 0) | |
3806 | return 0; | |
3807 | if (e[i].start + e[i].size > end) | |
3808 | end = e[i].start + e[i].size; | |
3809 | } else if (e[i].start > end) { | |
3810 | *idx = i; | |
3811 | break; | |
3812 | } | |
3813 | } | |
3814 | ||
3815 | return end - base_start; | |
3816 | } | |
3817 | ||
3818 | static unsigned long long merge_extents(struct intel_super *super, int sum_extents) | |
3819 | { | |
3820 | /* build a composite disk with all known extents and generate a new | |
3821 | * 'maxsize' given the "all disks in an array must share a common start | |
3822 | * offset" constraint | |
3823 | */ | |
3824 | struct extent *e = calloc(sum_extents, sizeof(*e)); | |
3825 | struct dl *dl; | |
3826 | int i, j; | |
3827 | int start_extent; | |
3828 | unsigned long long pos; | |
b9d77223 | 3829 | unsigned long long start = 0; |
0dcecb2e DW |
3830 | unsigned long long maxsize; |
3831 | unsigned long reserve; | |
3832 | ||
3833 | if (!e) | |
a7dd165b | 3834 | return 0; |
0dcecb2e DW |
3835 | |
3836 | /* coalesce and sort all extents. also, check to see if we need to | |
3837 | * reserve space between member arrays | |
3838 | */ | |
3839 | j = 0; | |
3840 | for (dl = super->disks; dl; dl = dl->next) { | |
3841 | if (!dl->e) | |
3842 | continue; | |
3843 | for (i = 0; i < dl->extent_cnt; i++) | |
3844 | e[j++] = dl->e[i]; | |
3845 | } | |
3846 | qsort(e, sum_extents, sizeof(*e), cmp_extent); | |
3847 | ||
3848 | /* merge extents */ | |
3849 | i = 0; | |
3850 | j = 0; | |
3851 | while (i < sum_extents) { | |
3852 | e[j].start = e[i].start; | |
3853 | e[j].size = find_size(e, &i, sum_extents); | |
3854 | j++; | |
3855 | if (e[j-1].size == 0) | |
3856 | break; | |
3857 | } | |
3858 | ||
3859 | pos = 0; | |
3860 | maxsize = 0; | |
3861 | start_extent = 0; | |
3862 | i = 0; | |
3863 | do { | |
3864 | unsigned long long esize; | |
3865 | ||
3866 | esize = e[i].start - pos; | |
3867 | if (esize >= maxsize) { | |
3868 | maxsize = esize; | |
3869 | start = pos; | |
3870 | start_extent = i; | |
3871 | } | |
3872 | pos = e[i].start + e[i].size; | |
3873 | i++; | |
3874 | } while (e[i-1].size); | |
3875 | free(e); | |
3876 | ||
a7dd165b DW |
3877 | if (maxsize == 0) |
3878 | return 0; | |
3879 | ||
3880 | /* FIXME assumes volume at offset 0 is the first volume in a | |
3881 | * container | |
3882 | */ | |
0dcecb2e DW |
3883 | if (start_extent > 0) |
3884 | reserve = IMSM_RESERVED_SECTORS; /* gap between raid regions */ | |
3885 | else | |
3886 | reserve = 0; | |
3887 | ||
3888 | if (maxsize < reserve) | |
a7dd165b | 3889 | return 0; |
0dcecb2e DW |
3890 | |
3891 | super->create_offset = ~((__u32) 0); | |
3892 | if (start + reserve > super->create_offset) | |
a7dd165b | 3893 | return 0; /* start overflows create_offset */ |
0dcecb2e DW |
3894 | super->create_offset = start + reserve; |
3895 | ||
3896 | return maxsize - reserve; | |
3897 | } | |
3898 | ||
88c32bb1 DW |
3899 | static int is_raid_level_supported(const struct imsm_orom *orom, int level, int raiddisks) |
3900 | { | |
3901 | if (level < 0 || level == 6 || level == 4) | |
3902 | return 0; | |
3903 | ||
3904 | /* if we have an orom prevent invalid raid levels */ | |
3905 | if (orom) | |
3906 | switch (level) { | |
3907 | case 0: return imsm_orom_has_raid0(orom); | |
3908 | case 1: | |
3909 | if (raiddisks > 2) | |
3910 | return imsm_orom_has_raid1e(orom); | |
1c556e92 DW |
3911 | return imsm_orom_has_raid1(orom) && raiddisks == 2; |
3912 | case 10: return imsm_orom_has_raid10(orom) && raiddisks == 4; | |
3913 | case 5: return imsm_orom_has_raid5(orom) && raiddisks > 2; | |
88c32bb1 DW |
3914 | } |
3915 | else | |
3916 | return 1; /* not on an Intel RAID platform so anything goes */ | |
3917 | ||
3918 | return 0; | |
3919 | } | |
3920 | ||
35f81cbb | 3921 | #define pr_vrb(fmt, arg...) (void) (verbose && fprintf(stderr, Name fmt, ##arg)) |
6592ce37 DW |
3922 | static int |
3923 | validate_geometry_imsm_orom(struct intel_super *super, int level, int layout, | |
3924 | int raiddisks, int chunk, int verbose) | |
3925 | { | |
3926 | if (!is_raid_level_supported(super->orom, level, raiddisks)) { | |
3927 | pr_vrb(": platform does not support raid%d with %d disk%s\n", | |
3928 | level, raiddisks, raiddisks > 1 ? "s" : ""); | |
3929 | return 0; | |
3930 | } | |
3931 | if (super->orom && level != 1 && | |
3932 | !imsm_orom_has_chunk(super->orom, chunk)) { | |
3933 | pr_vrb(": platform does not support a chunk size of: %d\n", chunk); | |
3934 | return 0; | |
3935 | } | |
3936 | if (layout != imsm_level_to_layout(level)) { | |
3937 | if (level == 5) | |
3938 | pr_vrb(": imsm raid 5 only supports the left-asymmetric layout\n"); | |
3939 | else if (level == 10) | |
3940 | pr_vrb(": imsm raid 10 only supports the n2 layout\n"); | |
3941 | else | |
3942 | pr_vrb(": imsm unknown layout %#x for this raid level %d\n", | |
3943 | layout, level); | |
3944 | return 0; | |
3945 | } | |
3946 | ||
3947 | return 1; | |
3948 | } | |
3949 | ||
c2c087e6 DW |
3950 | /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd |
3951 | * FIX ME add ahci details | |
3952 | */ | |
8b353278 DW |
3953 | static int validate_geometry_imsm_volume(struct supertype *st, int level, |
3954 | int layout, int raiddisks, int chunk, | |
c2c087e6 | 3955 | unsigned long long size, char *dev, |
2c514b71 NB |
3956 | unsigned long long *freesize, |
3957 | int verbose) | |
cdddbdbc | 3958 | { |
c2c087e6 DW |
3959 | struct stat stb; |
3960 | struct intel_super *super = st->sb; | |
a20d2ba5 | 3961 | struct imsm_super *mpb = super->anchor; |
c2c087e6 DW |
3962 | struct dl *dl; |
3963 | unsigned long long pos = 0; | |
3964 | unsigned long long maxsize; | |
3965 | struct extent *e; | |
3966 | int i; | |
cdddbdbc | 3967 | |
88c32bb1 DW |
3968 | /* We must have the container info already read in. */ |
3969 | if (!super) | |
c2c087e6 DW |
3970 | return 0; |
3971 | ||
6592ce37 | 3972 | if (!validate_geometry_imsm_orom(super, level, layout, raiddisks, chunk, verbose)) |
c2c087e6 | 3973 | return 0; |
c2c087e6 DW |
3974 | |
3975 | if (!dev) { | |
3976 | /* General test: make sure there is space for | |
2da8544a DW |
3977 | * 'raiddisks' device extents of size 'size' at a given |
3978 | * offset | |
c2c087e6 | 3979 | */ |
e46273eb | 3980 | unsigned long long minsize = size; |
b7528a20 | 3981 | unsigned long long start_offset = MaxSector; |
c2c087e6 DW |
3982 | int dcnt = 0; |
3983 | if (minsize == 0) | |
3984 | minsize = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; | |
3985 | for (dl = super->disks; dl ; dl = dl->next) { | |
3986 | int found = 0; | |
3987 | ||
bf5a934a | 3988 | pos = 0; |
c2c087e6 DW |
3989 | i = 0; |
3990 | e = get_extents(super, dl); | |
3991 | if (!e) continue; | |
3992 | do { | |
3993 | unsigned long long esize; | |
3994 | esize = e[i].start - pos; | |
3995 | if (esize >= minsize) | |
3996 | found = 1; | |
b7528a20 | 3997 | if (found && start_offset == MaxSector) { |
2da8544a DW |
3998 | start_offset = pos; |
3999 | break; | |
4000 | } else if (found && pos != start_offset) { | |
4001 | found = 0; | |
4002 | break; | |
4003 | } | |
c2c087e6 DW |
4004 | pos = e[i].start + e[i].size; |
4005 | i++; | |
4006 | } while (e[i-1].size); | |
4007 | if (found) | |
4008 | dcnt++; | |
4009 | free(e); | |
4010 | } | |
4011 | if (dcnt < raiddisks) { | |
2c514b71 NB |
4012 | if (verbose) |
4013 | fprintf(stderr, Name ": imsm: Not enough " | |
4014 | "devices with space for this array " | |
4015 | "(%d < %d)\n", | |
4016 | dcnt, raiddisks); | |
c2c087e6 DW |
4017 | return 0; |
4018 | } | |
4019 | return 1; | |
4020 | } | |
0dcecb2e | 4021 | |
c2c087e6 DW |
4022 | /* This device must be a member of the set */ |
4023 | if (stat(dev, &stb) < 0) | |
4024 | return 0; | |
4025 | if ((S_IFMT & stb.st_mode) != S_IFBLK) | |
4026 | return 0; | |
4027 | for (dl = super->disks ; dl ; dl = dl->next) { | |
f21e18ca N |
4028 | if (dl->major == (int)major(stb.st_rdev) && |
4029 | dl->minor == (int)minor(stb.st_rdev)) | |
c2c087e6 DW |
4030 | break; |
4031 | } | |
4032 | if (!dl) { | |
2c514b71 NB |
4033 | if (verbose) |
4034 | fprintf(stderr, Name ": %s is not in the " | |
4035 | "same imsm set\n", dev); | |
c2c087e6 | 4036 | return 0; |
a20d2ba5 DW |
4037 | } else if (super->orom && dl->index < 0 && mpb->num_raid_devs) { |
4038 | /* If a volume is present then the current creation attempt | |
4039 | * cannot incorporate new spares because the orom may not | |
4040 | * understand this configuration (all member disks must be | |
4041 | * members of each array in the container). | |
4042 | */ | |
4043 | fprintf(stderr, Name ": %s is a spare and a volume" | |
4044 | " is already defined for this container\n", dev); | |
4045 | fprintf(stderr, Name ": The option-rom requires all member" | |
4046 | " disks to be a member of all volumes\n"); | |
4047 | return 0; | |
c2c087e6 | 4048 | } |
0dcecb2e DW |
4049 | |
4050 | /* retrieve the largest free space block */ | |
c2c087e6 DW |
4051 | e = get_extents(super, dl); |
4052 | maxsize = 0; | |
4053 | i = 0; | |
0dcecb2e DW |
4054 | if (e) { |
4055 | do { | |
4056 | unsigned long long esize; | |
4057 | ||
4058 | esize = e[i].start - pos; | |
4059 | if (esize >= maxsize) | |
4060 | maxsize = esize; | |
4061 | pos = e[i].start + e[i].size; | |
4062 | i++; | |
4063 | } while (e[i-1].size); | |
4064 | dl->e = e; | |
4065 | dl->extent_cnt = i; | |
4066 | } else { | |
4067 | if (verbose) | |
4068 | fprintf(stderr, Name ": unable to determine free space for: %s\n", | |
4069 | dev); | |
4070 | return 0; | |
4071 | } | |
4072 | if (maxsize < size) { | |
4073 | if (verbose) | |
4074 | fprintf(stderr, Name ": %s not enough space (%llu < %llu)\n", | |
4075 | dev, maxsize, size); | |
4076 | return 0; | |
4077 | } | |
4078 | ||
4079 | /* count total number of extents for merge */ | |
4080 | i = 0; | |
4081 | for (dl = super->disks; dl; dl = dl->next) | |
4082 | if (dl->e) | |
4083 | i += dl->extent_cnt; | |
4084 | ||
4085 | maxsize = merge_extents(super, i); | |
a7dd165b | 4086 | if (maxsize < size || maxsize == 0) { |
0dcecb2e DW |
4087 | if (verbose) |
4088 | fprintf(stderr, Name ": not enough space after merge (%llu < %llu)\n", | |
4089 | maxsize, size); | |
4090 | return 0; | |
0dcecb2e DW |
4091 | } |
4092 | ||
c2c087e6 DW |
4093 | *freesize = maxsize; |
4094 | ||
4095 | return 1; | |
cdddbdbc DW |
4096 | } |
4097 | ||
efb30e7f DW |
4098 | static int reserve_space(struct supertype *st, int raiddisks, |
4099 | unsigned long long size, int chunk, | |
4100 | unsigned long long *freesize) | |
4101 | { | |
4102 | struct intel_super *super = st->sb; | |
4103 | struct imsm_super *mpb = super->anchor; | |
4104 | struct dl *dl; | |
4105 | int i; | |
4106 | int extent_cnt; | |
4107 | struct extent *e; | |
4108 | unsigned long long maxsize; | |
4109 | unsigned long long minsize; | |
4110 | int cnt; | |
4111 | int used; | |
4112 | ||
4113 | /* find the largest common start free region of the possible disks */ | |
4114 | used = 0; | |
4115 | extent_cnt = 0; | |
4116 | cnt = 0; | |
4117 | for (dl = super->disks; dl; dl = dl->next) { | |
4118 | dl->raiddisk = -1; | |
4119 | ||
4120 | if (dl->index >= 0) | |
4121 | used++; | |
4122 | ||
4123 | /* don't activate new spares if we are orom constrained | |
4124 | * and there is already a volume active in the container | |
4125 | */ | |
4126 | if (super->orom && dl->index < 0 && mpb->num_raid_devs) | |
4127 | continue; | |
4128 | ||
4129 | e = get_extents(super, dl); | |
4130 | if (!e) | |
4131 | continue; | |
4132 | for (i = 1; e[i-1].size; i++) | |
4133 | ; | |
4134 | dl->e = e; | |
4135 | dl->extent_cnt = i; | |
4136 | extent_cnt += i; | |
4137 | cnt++; | |
4138 | } | |
4139 | ||
4140 | maxsize = merge_extents(super, extent_cnt); | |
4141 | minsize = size; | |
4142 | if (size == 0) | |
4143 | minsize = chunk; | |
4144 | ||
4145 | if (cnt < raiddisks || | |
4146 | (super->orom && used && used != raiddisks) || | |
a7dd165b DW |
4147 | maxsize < minsize || |
4148 | maxsize == 0) { | |
efb30e7f DW |
4149 | fprintf(stderr, Name ": not enough devices with space to create array.\n"); |
4150 | return 0; /* No enough free spaces large enough */ | |
4151 | } | |
4152 | ||
4153 | if (size == 0) { | |
4154 | size = maxsize; | |
4155 | if (chunk) { | |
4156 | size /= chunk; | |
4157 | size *= chunk; | |
4158 | } | |
4159 | } | |
4160 | ||
4161 | cnt = 0; | |
4162 | for (dl = super->disks; dl; dl = dl->next) | |
4163 | if (dl->e) | |
4164 | dl->raiddisk = cnt++; | |
4165 | ||
4166 | *freesize = size; | |
4167 | ||
4168 | return 1; | |
4169 | } | |
4170 | ||
bf5a934a DW |
4171 | static int validate_geometry_imsm(struct supertype *st, int level, int layout, |
4172 | int raiddisks, int chunk, unsigned long long size, | |
4173 | char *dev, unsigned long long *freesize, | |
4174 | int verbose) | |
4175 | { | |
4176 | int fd, cfd; | |
4177 | struct mdinfo *sra; | |
20cbe8d2 | 4178 | int is_member = 0; |
bf5a934a DW |
4179 | |
4180 | /* if given unused devices create a container | |
4181 | * if given given devices in a container create a member volume | |
4182 | */ | |
4183 | if (level == LEVEL_CONTAINER) { | |
4184 | /* Must be a fresh device to add to a container */ | |
4185 | return validate_geometry_imsm_container(st, level, layout, | |
4186 | raiddisks, chunk, size, | |
4187 | dev, freesize, | |
4188 | verbose); | |
4189 | } | |
4190 | ||
8592f29d N |
4191 | if (!dev) { |
4192 | if (st->sb && freesize) { | |
efb30e7f DW |
4193 | /* we are being asked to automatically layout a |
4194 | * new volume based on the current contents of | |
4195 | * the container. If the the parameters can be | |
4196 | * satisfied reserve_space will record the disks, | |
4197 | * start offset, and size of the volume to be | |
4198 | * created. add_to_super and getinfo_super | |
4199 | * detect when autolayout is in progress. | |
4200 | */ | |
6592ce37 DW |
4201 | if (!validate_geometry_imsm_orom(st->sb, level, layout, |
4202 | raiddisks, chunk, | |
4203 | verbose)) | |
4204 | return 0; | |
efb30e7f | 4205 | return reserve_space(st, raiddisks, size, chunk, freesize); |
8592f29d N |
4206 | } |
4207 | return 1; | |
4208 | } | |
bf5a934a DW |
4209 | if (st->sb) { |
4210 | /* creating in a given container */ | |
4211 | return validate_geometry_imsm_volume(st, level, layout, | |
4212 | raiddisks, chunk, size, | |
4213 | dev, freesize, verbose); | |
4214 | } | |
4215 | ||
bf5a934a DW |
4216 | /* This device needs to be a device in an 'imsm' container */ |
4217 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
4218 | if (fd >= 0) { | |
4219 | if (verbose) | |
4220 | fprintf(stderr, | |
4221 | Name ": Cannot create this array on device %s\n", | |
4222 | dev); | |
4223 | close(fd); | |
4224 | return 0; | |
4225 | } | |
4226 | if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) { | |
4227 | if (verbose) | |
4228 | fprintf(stderr, Name ": Cannot open %s: %s\n", | |
4229 | dev, strerror(errno)); | |
4230 | return 0; | |
4231 | } | |
4232 | /* Well, it is in use by someone, maybe an 'imsm' container. */ | |
4233 | cfd = open_container(fd); | |
20cbe8d2 | 4234 | close(fd); |
bf5a934a | 4235 | if (cfd < 0) { |
bf5a934a DW |
4236 | if (verbose) |
4237 | fprintf(stderr, Name ": Cannot use %s: It is busy\n", | |
4238 | dev); | |
4239 | return 0; | |
4240 | } | |
4241 | sra = sysfs_read(cfd, 0, GET_VERSION); | |
bf5a934a | 4242 | if (sra && sra->array.major_version == -1 && |
20cbe8d2 AW |
4243 | strcmp(sra->text_version, "imsm") == 0) |
4244 | is_member = 1; | |
4245 | sysfs_free(sra); | |
4246 | if (is_member) { | |
bf5a934a DW |
4247 | /* This is a member of a imsm container. Load the container |
4248 | * and try to create a volume | |
4249 | */ | |
4250 | struct intel_super *super; | |
4251 | ||
e1902a7b | 4252 | if (load_super_imsm_all(st, cfd, (void **) &super, NULL) == 0) { |
bf5a934a DW |
4253 | st->sb = super; |
4254 | st->container_dev = fd2devnum(cfd); | |
4255 | close(cfd); | |
4256 | return validate_geometry_imsm_volume(st, level, layout, | |
4257 | raiddisks, chunk, | |
4258 | size, dev, | |
4259 | freesize, verbose); | |
4260 | } | |
20cbe8d2 | 4261 | } |
bf5a934a | 4262 | |
20cbe8d2 AW |
4263 | if (verbose) |
4264 | fprintf(stderr, Name ": failed container membership check\n"); | |
4265 | ||
4266 | close(cfd); | |
4267 | return 0; | |
bf5a934a | 4268 | } |
0bd16cf2 | 4269 | |
30f58b22 | 4270 | static void default_geometry_imsm(struct supertype *st, int *level, int *layout, int *chunk) |
0bd16cf2 DJ |
4271 | { |
4272 | struct intel_super *super = st->sb; | |
4273 | ||
30f58b22 DW |
4274 | if (level && *level == UnSet) |
4275 | *level = LEVEL_CONTAINER; | |
4276 | ||
4277 | if (level && layout && *layout == UnSet) | |
4278 | *layout = imsm_level_to_layout(*level); | |
0bd16cf2 | 4279 | |
1d54f286 N |
4280 | if (chunk && (*chunk == UnSet || *chunk == 0) && |
4281 | super && super->orom) | |
30f58b22 | 4282 | *chunk = imsm_orom_default_chunk(super->orom); |
0bd16cf2 DJ |
4283 | } |
4284 | ||
33414a01 DW |
4285 | static void handle_missing(struct intel_super *super, struct imsm_dev *dev); |
4286 | ||
4287 | static int kill_subarray_imsm(struct supertype *st) | |
4288 | { | |
4289 | /* remove the subarray currently referenced by ->current_vol */ | |
4290 | __u8 i; | |
4291 | struct intel_dev **dp; | |
4292 | struct intel_super *super = st->sb; | |
4293 | __u8 current_vol = super->current_vol; | |
4294 | struct imsm_super *mpb = super->anchor; | |
4295 | ||
4296 | if (super->current_vol < 0) | |
4297 | return 2; | |
4298 | super->current_vol = -1; /* invalidate subarray cursor */ | |
4299 | ||
4300 | /* block deletions that would change the uuid of active subarrays | |
4301 | * | |
4302 | * FIXME when immutable ids are available, but note that we'll | |
4303 | * also need to fixup the invalidated/active subarray indexes in | |
4304 | * mdstat | |
4305 | */ | |
4306 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
4307 | char subarray[4]; | |
4308 | ||
4309 | if (i < current_vol) | |
4310 | continue; | |
4311 | sprintf(subarray, "%u", i); | |
4312 | if (is_subarray_active(subarray, st->devname)) { | |
4313 | fprintf(stderr, | |
4314 | Name ": deleting subarray-%d would change the UUID of active subarray-%d, aborting\n", | |
4315 | current_vol, i); | |
4316 | ||
4317 | return 2; | |
4318 | } | |
4319 | } | |
4320 | ||
4321 | if (st->update_tail) { | |
4322 | struct imsm_update_kill_array *u = malloc(sizeof(*u)); | |
4323 | ||
4324 | if (!u) | |
4325 | return 2; | |
4326 | u->type = update_kill_array; | |
4327 | u->dev_idx = current_vol; | |
4328 | append_metadata_update(st, u, sizeof(*u)); | |
4329 | ||
4330 | return 0; | |
4331 | } | |
4332 | ||
4333 | for (dp = &super->devlist; *dp;) | |
4334 | if ((*dp)->index == current_vol) { | |
4335 | *dp = (*dp)->next; | |
4336 | } else { | |
4337 | handle_missing(super, (*dp)->dev); | |
4338 | if ((*dp)->index > current_vol) | |
4339 | (*dp)->index--; | |
4340 | dp = &(*dp)->next; | |
4341 | } | |
4342 | ||
4343 | /* no more raid devices, all active components are now spares, | |
4344 | * but of course failed are still failed | |
4345 | */ | |
4346 | if (--mpb->num_raid_devs == 0) { | |
4347 | struct dl *d; | |
4348 | ||
4349 | for (d = super->disks; d; d = d->next) | |
4350 | if (d->index > -2) { | |
4351 | d->index = -1; | |
4352 | d->disk.status = SPARE_DISK; | |
4353 | } | |
4354 | } | |
4355 | ||
4356 | super->updates_pending++; | |
4357 | ||
4358 | return 0; | |
4359 | } | |
aa534678 | 4360 | |
a951a4f7 | 4361 | static int update_subarray_imsm(struct supertype *st, char *subarray, |
fa56eddb | 4362 | char *update, struct mddev_ident *ident) |
aa534678 DW |
4363 | { |
4364 | /* update the subarray currently referenced by ->current_vol */ | |
4365 | struct intel_super *super = st->sb; | |
4366 | struct imsm_super *mpb = super->anchor; | |
4367 | ||
aa534678 DW |
4368 | if (strcmp(update, "name") == 0) { |
4369 | char *name = ident->name; | |
a951a4f7 N |
4370 | char *ep; |
4371 | int vol; | |
aa534678 | 4372 | |
a951a4f7 | 4373 | if (is_subarray_active(subarray, st->devname)) { |
aa534678 DW |
4374 | fprintf(stderr, |
4375 | Name ": Unable to update name of active subarray\n"); | |
4376 | return 2; | |
4377 | } | |
4378 | ||
4379 | if (!check_name(super, name, 0)) | |
4380 | return 2; | |
4381 | ||
a951a4f7 N |
4382 | vol = strtoul(subarray, &ep, 10); |
4383 | if (*ep != '\0' || vol >= super->anchor->num_raid_devs) | |
4384 | return 2; | |
4385 | ||
aa534678 DW |
4386 | if (st->update_tail) { |
4387 | struct imsm_update_rename_array *u = malloc(sizeof(*u)); | |
4388 | ||
4389 | if (!u) | |
4390 | return 2; | |
4391 | u->type = update_rename_array; | |
a951a4f7 | 4392 | u->dev_idx = vol; |
aa534678 DW |
4393 | snprintf((char *) u->name, MAX_RAID_SERIAL_LEN, "%s", name); |
4394 | append_metadata_update(st, u, sizeof(*u)); | |
4395 | } else { | |
4396 | struct imsm_dev *dev; | |
4397 | int i; | |
4398 | ||
a951a4f7 | 4399 | dev = get_imsm_dev(super, vol); |
aa534678 DW |
4400 | snprintf((char *) dev->volume, MAX_RAID_SERIAL_LEN, "%s", name); |
4401 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
4402 | dev = get_imsm_dev(super, i); | |
4403 | handle_missing(super, dev); | |
4404 | } | |
4405 | super->updates_pending++; | |
4406 | } | |
4407 | } else | |
4408 | return 2; | |
4409 | ||
4410 | return 0; | |
4411 | } | |
0e600426 | 4412 | #endif /* MDASSEMBLE */ |
bf5a934a | 4413 | |
28bce06f AK |
4414 | static int is_gen_migration(struct imsm_dev *dev) |
4415 | { | |
4416 | if (!dev->vol.migr_state) | |
4417 | return 0; | |
4418 | ||
4419 | if (migr_type(dev) == MIGR_GEN_MIGR) | |
4420 | return 1; | |
4421 | ||
4422 | return 0; | |
4423 | } | |
4424 | ||
1e5c6983 DW |
4425 | static int is_rebuilding(struct imsm_dev *dev) |
4426 | { | |
4427 | struct imsm_map *migr_map; | |
4428 | ||
4429 | if (!dev->vol.migr_state) | |
4430 | return 0; | |
4431 | ||
4432 | if (migr_type(dev) != MIGR_REBUILD) | |
4433 | return 0; | |
4434 | ||
4435 | migr_map = get_imsm_map(dev, 1); | |
4436 | ||
4437 | if (migr_map->map_state == IMSM_T_STATE_DEGRADED) | |
4438 | return 1; | |
4439 | else | |
4440 | return 0; | |
4441 | } | |
4442 | ||
4443 | static void update_recovery_start(struct imsm_dev *dev, struct mdinfo *array) | |
4444 | { | |
4445 | struct mdinfo *rebuild = NULL; | |
4446 | struct mdinfo *d; | |
4447 | __u32 units; | |
4448 | ||
4449 | if (!is_rebuilding(dev)) | |
4450 | return; | |
4451 | ||
4452 | /* Find the rebuild target, but punt on the dual rebuild case */ | |
4453 | for (d = array->devs; d; d = d->next) | |
4454 | if (d->recovery_start == 0) { | |
4455 | if (rebuild) | |
4456 | return; | |
4457 | rebuild = d; | |
4458 | } | |
4459 | ||
4363fd80 DW |
4460 | if (!rebuild) { |
4461 | /* (?) none of the disks are marked with | |
4462 | * IMSM_ORD_REBUILD, so assume they are missing and the | |
4463 | * disk_ord_tbl was not correctly updated | |
4464 | */ | |
4465 | dprintf("%s: failed to locate out-of-sync disk\n", __func__); | |
4466 | return; | |
4467 | } | |
4468 | ||
1e5c6983 DW |
4469 | units = __le32_to_cpu(dev->vol.curr_migr_unit); |
4470 | rebuild->recovery_start = units * blocks_per_migr_unit(dev); | |
4471 | } | |
4472 | ||
4473 | ||
00bbdbda | 4474 | static struct mdinfo *container_content_imsm(struct supertype *st, char *subarray) |
cdddbdbc | 4475 | { |
4f5bc454 DW |
4476 | /* Given a container loaded by load_super_imsm_all, |
4477 | * extract information about all the arrays into | |
4478 | * an mdinfo tree. | |
00bbdbda | 4479 | * If 'subarray' is given, just extract info about that array. |
4f5bc454 DW |
4480 | * |
4481 | * For each imsm_dev create an mdinfo, fill it in, | |
4482 | * then look for matching devices in super->disks | |
4483 | * and create appropriate device mdinfo. | |
4484 | */ | |
4485 | struct intel_super *super = st->sb; | |
949c47a0 | 4486 | struct imsm_super *mpb = super->anchor; |
4f5bc454 | 4487 | struct mdinfo *rest = NULL; |
00bbdbda | 4488 | unsigned int i; |
a06d022d | 4489 | int bbm_errors = 0; |
cdddbdbc | 4490 | |
a06d022d KW |
4491 | /* check for bad blocks */ |
4492 | if (imsm_bbm_log_size(super->anchor)) | |
4493 | bbm_errors = 1; | |
604b746f | 4494 | |
4f5bc454 | 4495 | for (i = 0; i < mpb->num_raid_devs; i++) { |
00bbdbda N |
4496 | struct imsm_dev *dev; |
4497 | struct imsm_map *map; | |
4f5bc454 | 4498 | struct mdinfo *this; |
4f5bc454 | 4499 | int slot; |
00bbdbda N |
4500 | char *ep; |
4501 | ||
4502 | if (subarray && | |
4503 | (i != strtoul(subarray, &ep, 10) || *ep != '\0')) | |
4504 | continue; | |
4505 | ||
4506 | dev = get_imsm_dev(super, i); | |
4507 | map = get_imsm_map(dev, 0); | |
4f5bc454 | 4508 | |
1ce0101c DW |
4509 | /* do not publish arrays that are in the middle of an |
4510 | * unsupported migration | |
4511 | */ | |
4512 | if (dev->vol.migr_state && | |
28bce06f | 4513 | (migr_type(dev) == MIGR_STATE_CHANGE)) { |
1ce0101c DW |
4514 | fprintf(stderr, Name ": cannot assemble volume '%.16s':" |
4515 | " unsupported migration in progress\n", | |
4516 | dev->volume); | |
4517 | continue; | |
4518 | } | |
4519 | ||
4f5bc454 | 4520 | this = malloc(sizeof(*this)); |
0fbd635c | 4521 | if (!this) { |
cf1be220 | 4522 | fprintf(stderr, Name ": failed to allocate %zu bytes\n", |
0fbd635c AW |
4523 | sizeof(*this)); |
4524 | break; | |
4525 | } | |
4f5bc454 DW |
4526 | memset(this, 0, sizeof(*this)); |
4527 | this->next = rest; | |
4f5bc454 | 4528 | |
301406c9 | 4529 | super->current_vol = i; |
a5d85af7 | 4530 | getinfo_super_imsm_volume(st, this, NULL); |
4f5bc454 | 4531 | for (slot = 0 ; slot < map->num_members; slot++) { |
1e5c6983 | 4532 | unsigned long long recovery_start; |
4f5bc454 DW |
4533 | struct mdinfo *info_d; |
4534 | struct dl *d; | |
4535 | int idx; | |
9a1608e5 | 4536 | int skip; |
7eef0453 | 4537 | __u32 ord; |
4f5bc454 | 4538 | |
9a1608e5 | 4539 | skip = 0; |
ff077194 | 4540 | idx = get_imsm_disk_idx(dev, slot); |
7eef0453 | 4541 | ord = get_imsm_ord_tbl_ent(dev, slot); |
4f5bc454 DW |
4542 | for (d = super->disks; d ; d = d->next) |
4543 | if (d->index == idx) | |
0fbd635c | 4544 | break; |
4f5bc454 | 4545 | |
1e5c6983 | 4546 | recovery_start = MaxSector; |
4f5bc454 | 4547 | if (d == NULL) |
9a1608e5 | 4548 | skip = 1; |
25ed7e59 | 4549 | if (d && is_failed(&d->disk)) |
9a1608e5 | 4550 | skip = 1; |
7eef0453 | 4551 | if (ord & IMSM_ORD_REBUILD) |
1e5c6983 | 4552 | recovery_start = 0; |
9a1608e5 DW |
4553 | |
4554 | /* | |
4555 | * if we skip some disks the array will be assmebled degraded; | |
1e5c6983 DW |
4556 | * reset resync start to avoid a dirty-degraded |
4557 | * situation when performing the intial sync | |
9a1608e5 DW |
4558 | * |
4559 | * FIXME handle dirty degraded | |
4560 | */ | |
1e5c6983 | 4561 | if ((skip || recovery_start == 0) && !dev->vol.dirty) |
b7528a20 | 4562 | this->resync_start = MaxSector; |
9a1608e5 DW |
4563 | if (skip) |
4564 | continue; | |
4f5bc454 | 4565 | |
1e5c6983 | 4566 | info_d = calloc(1, sizeof(*info_d)); |
9a1608e5 DW |
4567 | if (!info_d) { |
4568 | fprintf(stderr, Name ": failed to allocate disk" | |
1ce0101c | 4569 | " for volume %.16s\n", dev->volume); |
1e5c6983 DW |
4570 | info_d = this->devs; |
4571 | while (info_d) { | |
4572 | struct mdinfo *d = info_d->next; | |
4573 | ||
4574 | free(info_d); | |
4575 | info_d = d; | |
4576 | } | |
9a1608e5 DW |
4577 | free(this); |
4578 | this = rest; | |
4579 | break; | |
4580 | } | |
4f5bc454 DW |
4581 | info_d->next = this->devs; |
4582 | this->devs = info_d; | |
4583 | ||
4f5bc454 DW |
4584 | info_d->disk.number = d->index; |
4585 | info_d->disk.major = d->major; | |
4586 | info_d->disk.minor = d->minor; | |
4587 | info_d->disk.raid_disk = slot; | |
1e5c6983 | 4588 | info_d->recovery_start = recovery_start; |
4f5bc454 | 4589 | |
1e5c6983 DW |
4590 | if (info_d->recovery_start == MaxSector) |
4591 | this->array.working_disks++; | |
4f5bc454 DW |
4592 | |
4593 | info_d->events = __le32_to_cpu(mpb->generation_num); | |
4594 | info_d->data_offset = __le32_to_cpu(map->pba_of_lba0); | |
4595 | info_d->component_size = __le32_to_cpu(map->blocks_per_member); | |
4f5bc454 | 4596 | } |
1e5c6983 DW |
4597 | /* now that the disk list is up-to-date fixup recovery_start */ |
4598 | update_recovery_start(dev, this); | |
9a1608e5 | 4599 | rest = this; |
4f5bc454 DW |
4600 | } |
4601 | ||
a06d022d KW |
4602 | /* if array has bad blocks, set suitable bit in array status */ |
4603 | if (bbm_errors) | |
4604 | rest->array.state |= (1<<MD_SB_BBM_ERRORS); | |
4605 | ||
4f5bc454 | 4606 | return rest; |
cdddbdbc DW |
4607 | } |
4608 | ||
845dea95 | 4609 | |
fb49eef2 | 4610 | static __u8 imsm_check_degraded(struct intel_super *super, struct imsm_dev *dev, int failed) |
c2a1e7da | 4611 | { |
a965f303 | 4612 | struct imsm_map *map = get_imsm_map(dev, 0); |
c2a1e7da DW |
4613 | |
4614 | if (!failed) | |
3393c6af DW |
4615 | return map->map_state == IMSM_T_STATE_UNINITIALIZED ? |
4616 | IMSM_T_STATE_UNINITIALIZED : IMSM_T_STATE_NORMAL; | |
c2a1e7da DW |
4617 | |
4618 | switch (get_imsm_raid_level(map)) { | |
4619 | case 0: | |
4620 | return IMSM_T_STATE_FAILED; | |
4621 | break; | |
4622 | case 1: | |
4623 | if (failed < map->num_members) | |
4624 | return IMSM_T_STATE_DEGRADED; | |
4625 | else | |
4626 | return IMSM_T_STATE_FAILED; | |
4627 | break; | |
4628 | case 10: | |
4629 | { | |
4630 | /** | |
c92a2527 DW |
4631 | * check to see if any mirrors have failed, otherwise we |
4632 | * are degraded. Even numbered slots are mirrored on | |
4633 | * slot+1 | |
c2a1e7da | 4634 | */ |
c2a1e7da | 4635 | int i; |
d9b420a5 N |
4636 | /* gcc -Os complains that this is unused */ |
4637 | int insync = insync; | |
c2a1e7da DW |
4638 | |
4639 | for (i = 0; i < map->num_members; i++) { | |
c92a2527 DW |
4640 | __u32 ord = get_imsm_ord_tbl_ent(dev, i); |
4641 | int idx = ord_to_idx(ord); | |
4642 | struct imsm_disk *disk; | |
c2a1e7da | 4643 | |
c92a2527 DW |
4644 | /* reset the potential in-sync count on even-numbered |
4645 | * slots. num_copies is always 2 for imsm raid10 | |
4646 | */ | |
4647 | if ((i & 1) == 0) | |
4648 | insync = 2; | |
c2a1e7da | 4649 | |
c92a2527 | 4650 | disk = get_imsm_disk(super, idx); |
25ed7e59 | 4651 | if (!disk || is_failed(disk) || ord & IMSM_ORD_REBUILD) |
c92a2527 | 4652 | insync--; |
c2a1e7da | 4653 | |
c92a2527 DW |
4654 | /* no in-sync disks left in this mirror the |
4655 | * array has failed | |
4656 | */ | |
4657 | if (insync == 0) | |
4658 | return IMSM_T_STATE_FAILED; | |
c2a1e7da DW |
4659 | } |
4660 | ||
4661 | return IMSM_T_STATE_DEGRADED; | |
4662 | } | |
4663 | case 5: | |
4664 | if (failed < 2) | |
4665 | return IMSM_T_STATE_DEGRADED; | |
4666 | else | |
4667 | return IMSM_T_STATE_FAILED; | |
4668 | break; | |
4669 | default: | |
4670 | break; | |
4671 | } | |
4672 | ||
4673 | return map->map_state; | |
4674 | } | |
4675 | ||
ff077194 | 4676 | static int imsm_count_failed(struct intel_super *super, struct imsm_dev *dev) |
c2a1e7da DW |
4677 | { |
4678 | int i; | |
4679 | int failed = 0; | |
4680 | struct imsm_disk *disk; | |
ff077194 | 4681 | struct imsm_map *map = get_imsm_map(dev, 0); |
0556e1a2 DW |
4682 | struct imsm_map *prev = get_imsm_map(dev, dev->vol.migr_state); |
4683 | __u32 ord; | |
4684 | int idx; | |
c2a1e7da | 4685 | |
0556e1a2 DW |
4686 | /* at the beginning of migration we set IMSM_ORD_REBUILD on |
4687 | * disks that are being rebuilt. New failures are recorded to | |
4688 | * map[0]. So we look through all the disks we started with and | |
4689 | * see if any failures are still present, or if any new ones | |
4690 | * have arrived | |
4691 | * | |
4692 | * FIXME add support for online capacity expansion and | |
4693 | * raid-level-migration | |
4694 | */ | |
4695 | for (i = 0; i < prev->num_members; i++) { | |
4696 | ord = __le32_to_cpu(prev->disk_ord_tbl[i]); | |
4697 | ord |= __le32_to_cpu(map->disk_ord_tbl[i]); | |
4698 | idx = ord_to_idx(ord); | |
c2a1e7da | 4699 | |
949c47a0 | 4700 | disk = get_imsm_disk(super, idx); |
25ed7e59 | 4701 | if (!disk || is_failed(disk) || ord & IMSM_ORD_REBUILD) |
fcb84475 | 4702 | failed++; |
c2a1e7da DW |
4703 | } |
4704 | ||
4705 | return failed; | |
845dea95 NB |
4706 | } |
4707 | ||
97b4d0e9 DW |
4708 | #ifndef MDASSEMBLE |
4709 | static int imsm_open_new(struct supertype *c, struct active_array *a, | |
4710 | char *inst) | |
4711 | { | |
4712 | struct intel_super *super = c->sb; | |
4713 | struct imsm_super *mpb = super->anchor; | |
4714 | ||
4715 | if (atoi(inst) >= mpb->num_raid_devs) { | |
4716 | fprintf(stderr, "%s: subarry index %d, out of range\n", | |
4717 | __func__, atoi(inst)); | |
4718 | return -ENODEV; | |
4719 | } | |
4720 | ||
4721 | dprintf("imsm: open_new %s\n", inst); | |
4722 | a->info.container_member = atoi(inst); | |
4723 | return 0; | |
4724 | } | |
4725 | ||
0c046afd DW |
4726 | static int is_resyncing(struct imsm_dev *dev) |
4727 | { | |
4728 | struct imsm_map *migr_map; | |
4729 | ||
4730 | if (!dev->vol.migr_state) | |
4731 | return 0; | |
4732 | ||
1484e727 DW |
4733 | if (migr_type(dev) == MIGR_INIT || |
4734 | migr_type(dev) == MIGR_REPAIR) | |
0c046afd DW |
4735 | return 1; |
4736 | ||
4c9bc37b AK |
4737 | if (migr_type(dev) == MIGR_GEN_MIGR) |
4738 | return 0; | |
4739 | ||
0c046afd DW |
4740 | migr_map = get_imsm_map(dev, 1); |
4741 | ||
4c9bc37b AK |
4742 | if ((migr_map->map_state == IMSM_T_STATE_NORMAL) && |
4743 | (dev->vol.migr_type != MIGR_GEN_MIGR)) | |
0c046afd DW |
4744 | return 1; |
4745 | else | |
4746 | return 0; | |
4747 | } | |
4748 | ||
0556e1a2 DW |
4749 | /* return true if we recorded new information */ |
4750 | static int mark_failure(struct imsm_dev *dev, struct imsm_disk *disk, int idx) | |
47ee5a45 | 4751 | { |
0556e1a2 DW |
4752 | __u32 ord; |
4753 | int slot; | |
4754 | struct imsm_map *map; | |
4755 | ||
4756 | /* new failures are always set in map[0] */ | |
4757 | map = get_imsm_map(dev, 0); | |
4758 | ||
4759 | slot = get_imsm_disk_slot(map, idx); | |
4760 | if (slot < 0) | |
4761 | return 0; | |
4762 | ||
4763 | ord = __le32_to_cpu(map->disk_ord_tbl[slot]); | |
25ed7e59 | 4764 | if (is_failed(disk) && (ord & IMSM_ORD_REBUILD)) |
0556e1a2 DW |
4765 | return 0; |
4766 | ||
f2f27e63 | 4767 | disk->status |= FAILED_DISK; |
cf53434e | 4768 | disk->status &= ~CONFIGURED_DISK; |
0556e1a2 | 4769 | set_imsm_ord_tbl_ent(map, slot, idx | IMSM_ORD_REBUILD); |
f21e18ca | 4770 | if (map->failed_disk_num == 0xff) |
0556e1a2 DW |
4771 | map->failed_disk_num = slot; |
4772 | return 1; | |
4773 | } | |
4774 | ||
4775 | static void mark_missing(struct imsm_dev *dev, struct imsm_disk *disk, int idx) | |
4776 | { | |
4777 | mark_failure(dev, disk, idx); | |
4778 | ||
4779 | if (disk->scsi_id == __cpu_to_le32(~(__u32)0)) | |
4780 | return; | |
4781 | ||
47ee5a45 DW |
4782 | disk->scsi_id = __cpu_to_le32(~(__u32)0); |
4783 | memmove(&disk->serial[0], &disk->serial[1], MAX_RAID_SERIAL_LEN - 1); | |
4784 | } | |
4785 | ||
33414a01 DW |
4786 | static void handle_missing(struct intel_super *super, struct imsm_dev *dev) |
4787 | { | |
4788 | __u8 map_state; | |
4789 | struct dl *dl; | |
4790 | int failed; | |
4791 | ||
4792 | if (!super->missing) | |
4793 | return; | |
4794 | failed = imsm_count_failed(super, dev); | |
4795 | map_state = imsm_check_degraded(super, dev, failed); | |
4796 | ||
4797 | dprintf("imsm: mark missing\n"); | |
4798 | end_migration(dev, map_state); | |
4799 | for (dl = super->missing; dl; dl = dl->next) | |
4800 | mark_missing(dev, &dl->disk, dl->index); | |
4801 | super->updates_pending++; | |
4802 | } | |
4803 | ||
28bce06f AK |
4804 | static void imsm_set_disk(struct active_array *a, int n, int state); |
4805 | ||
aad6f216 | 4806 | /* Handle dirty -> clean transititions, resync and reshape. Degraded and rebuild |
0c046afd DW |
4807 | * states are handled in imsm_set_disk() with one exception, when a |
4808 | * resync is stopped due to a new failure this routine will set the | |
4809 | * 'degraded' state for the array. | |
4810 | */ | |
01f157d7 | 4811 | static int imsm_set_array_state(struct active_array *a, int consistent) |
a862209d DW |
4812 | { |
4813 | int inst = a->info.container_member; | |
4814 | struct intel_super *super = a->container->sb; | |
949c47a0 | 4815 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
a965f303 | 4816 | struct imsm_map *map = get_imsm_map(dev, 0); |
0c046afd DW |
4817 | int failed = imsm_count_failed(super, dev); |
4818 | __u8 map_state = imsm_check_degraded(super, dev, failed); | |
1e5c6983 | 4819 | __u32 blocks_per_unit; |
a862209d | 4820 | |
1af97990 AK |
4821 | if (dev->vol.migr_state && |
4822 | dev->vol.migr_type == MIGR_GEN_MIGR) { | |
4823 | /* array state change is blocked due to reshape action | |
aad6f216 N |
4824 | * We might need to |
4825 | * - abort the reshape (if last_checkpoint is 0 and action!= reshape) | |
4826 | * - finish the reshape (if last_checkpoint is big and action != reshape) | |
4827 | * - update curr_migr_unit | |
1af97990 | 4828 | */ |
aad6f216 N |
4829 | if (a->curr_action == reshape) { |
4830 | /* still reshaping, maybe update curr_migr_unit */ | |
4831 | long long blocks_per_unit = blocks_per_migr_unit(dev); | |
4832 | long long unit = a->last_checkpoint; | |
4833 | unit /= blocks_per_unit; | |
4834 | if (unit > __le32_to_cpu(dev->vol.curr_migr_unit)) { | |
4835 | dev->vol.curr_migr_unit = __cpu_to_le32(unit); | |
4836 | super->updates_pending++; | |
4837 | } | |
4838 | } else { | |
4839 | if (a->last_checkpoint == 0 && a->prev_action == reshape) { | |
4840 | /* for some reason we aborted the reshape. | |
4841 | * Better clean up | |
4842 | */ | |
4843 | struct imsm_map *map2 = get_imsm_map(dev, 1); | |
4844 | dev->vol.migr_state = 0; | |
4845 | dev->vol.migr_type = 0; | |
4846 | dev->vol.curr_migr_unit = 0; | |
4847 | memcpy(map, map2, sizeof_imsm_map(map2)); | |
4848 | super->updates_pending++; | |
4849 | } | |
4850 | if (a->last_checkpoint >= a->info.component_size) { | |
4851 | unsigned long long array_blocks; | |
4852 | int used_disks; | |
4853 | /* it seems the reshape is all done */ | |
4854 | dev->vol.migr_state = 0; | |
4855 | dev->vol.migr_type = 0; | |
4856 | dev->vol.curr_migr_unit = 0; | |
4857 | ||
4858 | used_disks = imsm_num_data_members(dev); | |
4859 | array_blocks = map->blocks_per_member * used_disks; | |
4860 | /* round array size down to closest MB */ | |
4861 | array_blocks = (array_blocks >> SECT_PER_MB_SHIFT) | |
4862 | << SECT_PER_MB_SHIFT; | |
4863 | dev->size_low = __cpu_to_le32((__u32) array_blocks); | |
4864 | dev->size_high = __cpu_to_le32((__u32) (array_blocks >> 32)); | |
4865 | a->info.custom_array_size = array_blocks; | |
4866 | a->check_reshape = 1; /* encourage manager to update | |
4867 | * array size | |
4868 | */ | |
4869 | super->updates_pending++; | |
4870 | } | |
4871 | } | |
4872 | return 0; | |
1af97990 AK |
4873 | } |
4874 | ||
47ee5a45 | 4875 | /* before we activate this array handle any missing disks */ |
33414a01 DW |
4876 | if (consistent == 2) |
4877 | handle_missing(super, dev); | |
1e5c6983 | 4878 | |
0c046afd | 4879 | if (consistent == 2 && |
b7941fd6 | 4880 | (!is_resync_complete(&a->info) || |
0c046afd DW |
4881 | map_state != IMSM_T_STATE_NORMAL || |
4882 | dev->vol.migr_state)) | |
01f157d7 | 4883 | consistent = 0; |
272906ef | 4884 | |
b7941fd6 | 4885 | if (is_resync_complete(&a->info)) { |
0c046afd | 4886 | /* complete intialization / resync, |
0556e1a2 DW |
4887 | * recovery and interrupted recovery is completed in |
4888 | * ->set_disk | |
0c046afd DW |
4889 | */ |
4890 | if (is_resyncing(dev)) { | |
4891 | dprintf("imsm: mark resync done\n"); | |
f8f603f1 | 4892 | end_migration(dev, map_state); |
115c3803 | 4893 | super->updates_pending++; |
484240d8 | 4894 | a->last_checkpoint = 0; |
115c3803 | 4895 | } |
0c046afd DW |
4896 | } else if (!is_resyncing(dev) && !failed) { |
4897 | /* mark the start of the init process if nothing is failed */ | |
b7941fd6 | 4898 | dprintf("imsm: mark resync start\n"); |
1484e727 | 4899 | if (map->map_state == IMSM_T_STATE_UNINITIALIZED) |
e3bba0e0 | 4900 | migrate(dev, IMSM_T_STATE_NORMAL, MIGR_INIT); |
1484e727 DW |
4901 | else |
4902 | migrate(dev, IMSM_T_STATE_NORMAL, MIGR_REPAIR); | |
3393c6af | 4903 | super->updates_pending++; |
115c3803 | 4904 | } |
a862209d | 4905 | |
1e5c6983 DW |
4906 | /* check if we can update curr_migr_unit from resync_start, recovery_start */ |
4907 | blocks_per_unit = blocks_per_migr_unit(dev); | |
4f0a7acc | 4908 | if (blocks_per_unit) { |
1e5c6983 DW |
4909 | __u32 units32; |
4910 | __u64 units; | |
4911 | ||
4f0a7acc | 4912 | units = a->last_checkpoint / blocks_per_unit; |
1e5c6983 DW |
4913 | units32 = units; |
4914 | ||
4915 | /* check that we did not overflow 32-bits, and that | |
4916 | * curr_migr_unit needs updating | |
4917 | */ | |
4918 | if (units32 == units && | |
4919 | __le32_to_cpu(dev->vol.curr_migr_unit) != units32) { | |
4920 | dprintf("imsm: mark checkpoint (%u)\n", units32); | |
4921 | dev->vol.curr_migr_unit = __cpu_to_le32(units32); | |
4922 | super->updates_pending++; | |
4923 | } | |
4924 | } | |
f8f603f1 | 4925 | |
3393c6af | 4926 | /* mark dirty / clean */ |
0c046afd | 4927 | if (dev->vol.dirty != !consistent) { |
b7941fd6 | 4928 | dprintf("imsm: mark '%s'\n", consistent ? "clean" : "dirty"); |
0c046afd DW |
4929 | if (consistent) |
4930 | dev->vol.dirty = 0; | |
4931 | else | |
4932 | dev->vol.dirty = 1; | |
a862209d DW |
4933 | super->updates_pending++; |
4934 | } | |
28bce06f AK |
4935 | |
4936 | /* finalize online capacity expansion/reshape */ | |
4937 | if ((a->curr_action != reshape) && | |
4938 | (a->prev_action == reshape)) { | |
4939 | struct mdinfo *mdi; | |
4940 | ||
4941 | for (mdi = a->info.devs; mdi; mdi = mdi->next) | |
4942 | imsm_set_disk(a, mdi->disk.raid_disk, mdi->curr_state); | |
4943 | } | |
4944 | ||
01f157d7 | 4945 | return consistent; |
a862209d DW |
4946 | } |
4947 | ||
8d45d196 | 4948 | static void imsm_set_disk(struct active_array *a, int n, int state) |
845dea95 | 4949 | { |
8d45d196 DW |
4950 | int inst = a->info.container_member; |
4951 | struct intel_super *super = a->container->sb; | |
949c47a0 | 4952 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
a965f303 | 4953 | struct imsm_map *map = get_imsm_map(dev, 0); |
8d45d196 | 4954 | struct imsm_disk *disk; |
0c046afd | 4955 | int failed; |
b10b37b8 | 4956 | __u32 ord; |
0c046afd | 4957 | __u8 map_state; |
8d45d196 DW |
4958 | |
4959 | if (n > map->num_members) | |
4960 | fprintf(stderr, "imsm: set_disk %d out of range 0..%d\n", | |
4961 | n, map->num_members - 1); | |
4962 | ||
4963 | if (n < 0) | |
4964 | return; | |
4965 | ||
4e6e574a | 4966 | dprintf("imsm: set_disk %d:%x\n", n, state); |
8d45d196 | 4967 | |
b10b37b8 DW |
4968 | ord = get_imsm_ord_tbl_ent(dev, n); |
4969 | disk = get_imsm_disk(super, ord_to_idx(ord)); | |
8d45d196 | 4970 | |
5802a811 | 4971 | /* check for new failures */ |
0556e1a2 DW |
4972 | if (state & DS_FAULTY) { |
4973 | if (mark_failure(dev, disk, ord_to_idx(ord))) | |
4974 | super->updates_pending++; | |
8d45d196 | 4975 | } |
47ee5a45 | 4976 | |
19859edc | 4977 | /* check if in_sync */ |
0556e1a2 | 4978 | if (state & DS_INSYNC && ord & IMSM_ORD_REBUILD && is_rebuilding(dev)) { |
b10b37b8 DW |
4979 | struct imsm_map *migr_map = get_imsm_map(dev, 1); |
4980 | ||
4981 | set_imsm_ord_tbl_ent(migr_map, n, ord_to_idx(ord)); | |
19859edc DW |
4982 | super->updates_pending++; |
4983 | } | |
8d45d196 | 4984 | |
0c046afd DW |
4985 | failed = imsm_count_failed(super, dev); |
4986 | map_state = imsm_check_degraded(super, dev, failed); | |
5802a811 | 4987 | |
0c046afd DW |
4988 | /* check if recovery complete, newly degraded, or failed */ |
4989 | if (map_state == IMSM_T_STATE_NORMAL && is_rebuilding(dev)) { | |
f8f603f1 | 4990 | end_migration(dev, map_state); |
0556e1a2 DW |
4991 | map = get_imsm_map(dev, 0); |
4992 | map->failed_disk_num = ~0; | |
0c046afd | 4993 | super->updates_pending++; |
484240d8 | 4994 | a->last_checkpoint = 0; |
0c046afd DW |
4995 | } else if (map_state == IMSM_T_STATE_DEGRADED && |
4996 | map->map_state != map_state && | |
4997 | !dev->vol.migr_state) { | |
4998 | dprintf("imsm: mark degraded\n"); | |
4999 | map->map_state = map_state; | |
5000 | super->updates_pending++; | |
484240d8 | 5001 | a->last_checkpoint = 0; |
0c046afd DW |
5002 | } else if (map_state == IMSM_T_STATE_FAILED && |
5003 | map->map_state != map_state) { | |
5004 | dprintf("imsm: mark failed\n"); | |
f8f603f1 | 5005 | end_migration(dev, map_state); |
0c046afd | 5006 | super->updates_pending++; |
484240d8 | 5007 | a->last_checkpoint = 0; |
28bce06f AK |
5008 | } else if (is_gen_migration(dev)) { |
5009 | dprintf("imsm: Detected General Migration in state: "); | |
5010 | if (map_state == IMSM_T_STATE_NORMAL) { | |
5011 | end_migration(dev, map_state); | |
5012 | map = get_imsm_map(dev, 0); | |
5013 | map->failed_disk_num = ~0; | |
5014 | dprintf("normal\n"); | |
5015 | } else { | |
5016 | if (map_state == IMSM_T_STATE_DEGRADED) { | |
5017 | printf("degraded\n"); | |
5018 | end_migration(dev, map_state); | |
5019 | } else { | |
5020 | dprintf("failed\n"); | |
5021 | } | |
5022 | map->map_state = map_state; | |
5023 | } | |
5024 | super->updates_pending++; | |
5802a811 | 5025 | } |
845dea95 NB |
5026 | } |
5027 | ||
f796af5d | 5028 | static int store_imsm_mpb(int fd, struct imsm_super *mpb) |
c2a1e7da | 5029 | { |
f796af5d | 5030 | void *buf = mpb; |
c2a1e7da DW |
5031 | __u32 mpb_size = __le32_to_cpu(mpb->mpb_size); |
5032 | unsigned long long dsize; | |
5033 | unsigned long long sectors; | |
5034 | ||
5035 | get_dev_size(fd, NULL, &dsize); | |
5036 | ||
272f648f DW |
5037 | if (mpb_size > 512) { |
5038 | /* -1 to account for anchor */ | |
5039 | sectors = mpb_sectors(mpb) - 1; | |
c2a1e7da | 5040 | |
272f648f DW |
5041 | /* write the extended mpb to the sectors preceeding the anchor */ |
5042 | if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) | |
5043 | return 1; | |
c2a1e7da | 5044 | |
f21e18ca N |
5045 | if ((unsigned long long)write(fd, buf + 512, 512 * sectors) |
5046 | != 512 * sectors) | |
272f648f DW |
5047 | return 1; |
5048 | } | |
c2a1e7da | 5049 | |
272f648f DW |
5050 | /* first block is stored on second to last sector of the disk */ |
5051 | if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) | |
c2a1e7da DW |
5052 | return 1; |
5053 | ||
f796af5d | 5054 | if (write(fd, buf, 512) != 512) |
c2a1e7da DW |
5055 | return 1; |
5056 | ||
c2a1e7da DW |
5057 | return 0; |
5058 | } | |
5059 | ||
2e735d19 | 5060 | static void imsm_sync_metadata(struct supertype *container) |
845dea95 | 5061 | { |
2e735d19 | 5062 | struct intel_super *super = container->sb; |
c2a1e7da | 5063 | |
1a64be56 | 5064 | dprintf("sync metadata: %d\n", super->updates_pending); |
c2a1e7da DW |
5065 | if (!super->updates_pending) |
5066 | return; | |
5067 | ||
36988a3d | 5068 | write_super_imsm(container, 0); |
c2a1e7da DW |
5069 | |
5070 | super->updates_pending = 0; | |
845dea95 NB |
5071 | } |
5072 | ||
272906ef DW |
5073 | static struct dl *imsm_readd(struct intel_super *super, int idx, struct active_array *a) |
5074 | { | |
5075 | struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member); | |
ff077194 | 5076 | int i = get_imsm_disk_idx(dev, idx); |
272906ef DW |
5077 | struct dl *dl; |
5078 | ||
5079 | for (dl = super->disks; dl; dl = dl->next) | |
5080 | if (dl->index == i) | |
5081 | break; | |
5082 | ||
25ed7e59 | 5083 | if (dl && is_failed(&dl->disk)) |
272906ef DW |
5084 | dl = NULL; |
5085 | ||
5086 | if (dl) | |
5087 | dprintf("%s: found %x:%x\n", __func__, dl->major, dl->minor); | |
5088 | ||
5089 | return dl; | |
5090 | } | |
5091 | ||
a20d2ba5 | 5092 | static struct dl *imsm_add_spare(struct intel_super *super, int slot, |
8ba77d32 AK |
5093 | struct active_array *a, int activate_new, |
5094 | struct mdinfo *additional_test_list) | |
272906ef DW |
5095 | { |
5096 | struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member); | |
e553d2a4 | 5097 | int idx = get_imsm_disk_idx(dev, slot); |
a20d2ba5 DW |
5098 | struct imsm_super *mpb = super->anchor; |
5099 | struct imsm_map *map; | |
272906ef DW |
5100 | unsigned long long pos; |
5101 | struct mdinfo *d; | |
5102 | struct extent *ex; | |
a20d2ba5 | 5103 | int i, j; |
272906ef | 5104 | int found; |
569cc43f DW |
5105 | __u32 array_start = 0; |
5106 | __u32 array_end = 0; | |
272906ef | 5107 | struct dl *dl; |
6c932028 | 5108 | struct mdinfo *test_list; |
272906ef DW |
5109 | |
5110 | for (dl = super->disks; dl; dl = dl->next) { | |
5111 | /* If in this array, skip */ | |
5112 | for (d = a->info.devs ; d ; d = d->next) | |
e553d2a4 DW |
5113 | if (d->state_fd >= 0 && |
5114 | d->disk.major == dl->major && | |
272906ef | 5115 | d->disk.minor == dl->minor) { |
8ba77d32 AK |
5116 | dprintf("%x:%x already in array\n", |
5117 | dl->major, dl->minor); | |
272906ef DW |
5118 | break; |
5119 | } | |
5120 | if (d) | |
5121 | continue; | |
6c932028 AK |
5122 | test_list = additional_test_list; |
5123 | while (test_list) { | |
5124 | if (test_list->disk.major == dl->major && | |
5125 | test_list->disk.minor == dl->minor) { | |
8ba77d32 AK |
5126 | dprintf("%x:%x already in additional test list\n", |
5127 | dl->major, dl->minor); | |
5128 | break; | |
5129 | } | |
6c932028 | 5130 | test_list = test_list->next; |
8ba77d32 | 5131 | } |
6c932028 | 5132 | if (test_list) |
8ba77d32 | 5133 | continue; |
272906ef | 5134 | |
e553d2a4 | 5135 | /* skip in use or failed drives */ |
25ed7e59 | 5136 | if (is_failed(&dl->disk) || idx == dl->index || |
df474657 DW |
5137 | dl->index == -2) { |
5138 | dprintf("%x:%x status (failed: %d index: %d)\n", | |
25ed7e59 | 5139 | dl->major, dl->minor, is_failed(&dl->disk), idx); |
9a1608e5 DW |
5140 | continue; |
5141 | } | |
5142 | ||
a20d2ba5 DW |
5143 | /* skip pure spares when we are looking for partially |
5144 | * assimilated drives | |
5145 | */ | |
5146 | if (dl->index == -1 && !activate_new) | |
5147 | continue; | |
5148 | ||
272906ef | 5149 | /* Does this unused device have the requisite free space? |
a20d2ba5 | 5150 | * It needs to be able to cover all member volumes |
272906ef DW |
5151 | */ |
5152 | ex = get_extents(super, dl); | |
5153 | if (!ex) { | |
5154 | dprintf("cannot get extents\n"); | |
5155 | continue; | |
5156 | } | |
a20d2ba5 DW |
5157 | for (i = 0; i < mpb->num_raid_devs; i++) { |
5158 | dev = get_imsm_dev(super, i); | |
5159 | map = get_imsm_map(dev, 0); | |
272906ef | 5160 | |
a20d2ba5 DW |
5161 | /* check if this disk is already a member of |
5162 | * this array | |
272906ef | 5163 | */ |
620b1713 | 5164 | if (get_imsm_disk_slot(map, dl->index) >= 0) |
a20d2ba5 DW |
5165 | continue; |
5166 | ||
5167 | found = 0; | |
5168 | j = 0; | |
5169 | pos = 0; | |
5170 | array_start = __le32_to_cpu(map->pba_of_lba0); | |
329c8278 DW |
5171 | array_end = array_start + |
5172 | __le32_to_cpu(map->blocks_per_member) - 1; | |
a20d2ba5 DW |
5173 | |
5174 | do { | |
5175 | /* check that we can start at pba_of_lba0 with | |
5176 | * blocks_per_member of space | |
5177 | */ | |
329c8278 | 5178 | if (array_start >= pos && array_end < ex[j].start) { |
a20d2ba5 DW |
5179 | found = 1; |
5180 | break; | |
5181 | } | |
5182 | pos = ex[j].start + ex[j].size; | |
5183 | j++; | |
5184 | } while (ex[j-1].size); | |
5185 | ||
5186 | if (!found) | |
272906ef | 5187 | break; |
a20d2ba5 | 5188 | } |
272906ef DW |
5189 | |
5190 | free(ex); | |
a20d2ba5 | 5191 | if (i < mpb->num_raid_devs) { |
329c8278 DW |
5192 | dprintf("%x:%x does not have %u to %u available\n", |
5193 | dl->major, dl->minor, array_start, array_end); | |
272906ef DW |
5194 | /* No room */ |
5195 | continue; | |
a20d2ba5 DW |
5196 | } |
5197 | return dl; | |
272906ef DW |
5198 | } |
5199 | ||
5200 | return dl; | |
5201 | } | |
5202 | ||
95d07a2c LM |
5203 | |
5204 | static int imsm_rebuild_allowed(struct supertype *cont, int dev_idx, int failed) | |
5205 | { | |
5206 | struct imsm_dev *dev2; | |
5207 | struct imsm_map *map; | |
5208 | struct dl *idisk; | |
5209 | int slot; | |
5210 | int idx; | |
5211 | __u8 state; | |
5212 | ||
5213 | dev2 = get_imsm_dev(cont->sb, dev_idx); | |
5214 | if (dev2) { | |
5215 | state = imsm_check_degraded(cont->sb, dev2, failed); | |
5216 | if (state == IMSM_T_STATE_FAILED) { | |
5217 | map = get_imsm_map(dev2, 0); | |
5218 | if (!map) | |
5219 | return 1; | |
5220 | for (slot = 0; slot < map->num_members; slot++) { | |
5221 | /* | |
5222 | * Check if failed disks are deleted from intel | |
5223 | * disk list or are marked to be deleted | |
5224 | */ | |
5225 | idx = get_imsm_disk_idx(dev2, slot); | |
5226 | idisk = get_imsm_dl_disk(cont->sb, idx); | |
5227 | /* | |
5228 | * Do not rebuild the array if failed disks | |
5229 | * from failed sub-array are not removed from | |
5230 | * container. | |
5231 | */ | |
5232 | if (idisk && | |
5233 | is_failed(&idisk->disk) && | |
5234 | (idisk->action != DISK_REMOVE)) | |
5235 | return 0; | |
5236 | } | |
5237 | } | |
5238 | } | |
5239 | return 1; | |
5240 | } | |
5241 | ||
88758e9d DW |
5242 | static struct mdinfo *imsm_activate_spare(struct active_array *a, |
5243 | struct metadata_update **updates) | |
5244 | { | |
5245 | /** | |
d23fe947 DW |
5246 | * Find a device with unused free space and use it to replace a |
5247 | * failed/vacant region in an array. We replace failed regions one a | |
5248 | * array at a time. The result is that a new spare disk will be added | |
5249 | * to the first failed array and after the monitor has finished | |
5250 | * propagating failures the remainder will be consumed. | |
88758e9d | 5251 | * |
d23fe947 DW |
5252 | * FIXME add a capability for mdmon to request spares from another |
5253 | * container. | |
88758e9d DW |
5254 | */ |
5255 | ||
5256 | struct intel_super *super = a->container->sb; | |
88758e9d | 5257 | int inst = a->info.container_member; |
949c47a0 | 5258 | struct imsm_dev *dev = get_imsm_dev(super, inst); |
a965f303 | 5259 | struct imsm_map *map = get_imsm_map(dev, 0); |
88758e9d DW |
5260 | int failed = a->info.array.raid_disks; |
5261 | struct mdinfo *rv = NULL; | |
5262 | struct mdinfo *d; | |
5263 | struct mdinfo *di; | |
5264 | struct metadata_update *mu; | |
5265 | struct dl *dl; | |
5266 | struct imsm_update_activate_spare *u; | |
5267 | int num_spares = 0; | |
5268 | int i; | |
95d07a2c | 5269 | int allowed; |
88758e9d DW |
5270 | |
5271 | for (d = a->info.devs ; d ; d = d->next) { | |
5272 | if ((d->curr_state & DS_FAULTY) && | |
5273 | d->state_fd >= 0) | |
5274 | /* wait for Removal to happen */ | |
5275 | return NULL; | |
5276 | if (d->state_fd >= 0) | |
5277 | failed--; | |
5278 | } | |
5279 | ||
5280 | dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n", | |
5281 | inst, failed, a->info.array.raid_disks, a->info.array.level); | |
1af97990 AK |
5282 | |
5283 | if (dev->vol.migr_state && | |
5284 | dev->vol.migr_type == MIGR_GEN_MIGR) | |
5285 | /* No repair during migration */ | |
5286 | return NULL; | |
5287 | ||
fb49eef2 | 5288 | if (imsm_check_degraded(super, dev, failed) != IMSM_T_STATE_DEGRADED) |
88758e9d DW |
5289 | return NULL; |
5290 | ||
95d07a2c LM |
5291 | /* |
5292 | * If there are any failed disks check state of the other volume. | |
5293 | * Block rebuild if the another one is failed until failed disks | |
5294 | * are removed from container. | |
5295 | */ | |
5296 | if (failed) { | |
5297 | dprintf("found failed disks in %s, check if there another" | |
5298 | "failed sub-array.\n", | |
5299 | dev->volume); | |
5300 | /* check if states of the other volumes allow for rebuild */ | |
5301 | for (i = 0; i < super->anchor->num_raid_devs; i++) { | |
5302 | if (i != inst) { | |
5303 | allowed = imsm_rebuild_allowed(a->container, | |
5304 | i, failed); | |
5305 | if (!allowed) | |
5306 | return NULL; | |
5307 | } | |
5308 | } | |
5309 | } | |
5310 | ||
88758e9d | 5311 | /* For each slot, if it is not working, find a spare */ |
88758e9d DW |
5312 | for (i = 0; i < a->info.array.raid_disks; i++) { |
5313 | for (d = a->info.devs ; d ; d = d->next) | |
5314 | if (d->disk.raid_disk == i) | |
5315 | break; | |
5316 | dprintf("found %d: %p %x\n", i, d, d?d->curr_state:0); | |
5317 | if (d && (d->state_fd >= 0)) | |
5318 | continue; | |
5319 | ||
272906ef | 5320 | /* |
a20d2ba5 DW |
5321 | * OK, this device needs recovery. Try to re-add the |
5322 | * previous occupant of this slot, if this fails see if | |
5323 | * we can continue the assimilation of a spare that was | |
5324 | * partially assimilated, finally try to activate a new | |
5325 | * spare. | |
272906ef DW |
5326 | */ |
5327 | dl = imsm_readd(super, i, a); | |
5328 | if (!dl) | |
8ba77d32 | 5329 | dl = imsm_add_spare(super, i, a, 0, NULL); |
a20d2ba5 | 5330 | if (!dl) |
8ba77d32 | 5331 | dl = imsm_add_spare(super, i, a, 1, NULL); |
272906ef DW |
5332 | if (!dl) |
5333 | continue; | |
5334 | ||
5335 | /* found a usable disk with enough space */ | |
5336 | di = malloc(sizeof(*di)); | |
79244939 DW |
5337 | if (!di) |
5338 | continue; | |
272906ef DW |
5339 | memset(di, 0, sizeof(*di)); |
5340 | ||
5341 | /* dl->index will be -1 in the case we are activating a | |
5342 | * pristine spare. imsm_process_update() will create a | |
5343 | * new index in this case. Once a disk is found to be | |
5344 | * failed in all member arrays it is kicked from the | |
5345 | * metadata | |
5346 | */ | |
5347 | di->disk.number = dl->index; | |
d23fe947 | 5348 | |
272906ef DW |
5349 | /* (ab)use di->devs to store a pointer to the device |
5350 | * we chose | |
5351 | */ | |
5352 | di->devs = (struct mdinfo *) dl; | |
5353 | ||
5354 | di->disk.raid_disk = i; | |
5355 | di->disk.major = dl->major; | |
5356 | di->disk.minor = dl->minor; | |
5357 | di->disk.state = 0; | |
d23534e4 | 5358 | di->recovery_start = 0; |
272906ef DW |
5359 | di->data_offset = __le32_to_cpu(map->pba_of_lba0); |
5360 | di->component_size = a->info.component_size; | |
5361 | di->container_member = inst; | |
148acb7b | 5362 | super->random = random32(); |
272906ef DW |
5363 | di->next = rv; |
5364 | rv = di; | |
5365 | num_spares++; | |
5366 | dprintf("%x:%x to be %d at %llu\n", dl->major, dl->minor, | |
5367 | i, di->data_offset); | |
88758e9d | 5368 | |
272906ef | 5369 | break; |
88758e9d DW |
5370 | } |
5371 | ||
5372 | if (!rv) | |
5373 | /* No spares found */ | |
5374 | return rv; | |
5375 | /* Now 'rv' has a list of devices to return. | |
5376 | * Create a metadata_update record to update the | |
5377 | * disk_ord_tbl for the array | |
5378 | */ | |
5379 | mu = malloc(sizeof(*mu)); | |
79244939 DW |
5380 | if (mu) { |
5381 | mu->buf = malloc(sizeof(struct imsm_update_activate_spare) * num_spares); | |
5382 | if (mu->buf == NULL) { | |
5383 | free(mu); | |
5384 | mu = NULL; | |
5385 | } | |
5386 | } | |
5387 | if (!mu) { | |
5388 | while (rv) { | |
5389 | struct mdinfo *n = rv->next; | |
5390 | ||
5391 | free(rv); | |
5392 | rv = n; | |
5393 | } | |
5394 | return NULL; | |
5395 | } | |
5396 | ||
88758e9d | 5397 | mu->space = NULL; |
cb23f1f4 | 5398 | mu->space_list = NULL; |
88758e9d DW |
5399 | mu->len = sizeof(struct imsm_update_activate_spare) * num_spares; |
5400 | mu->next = *updates; | |
5401 | u = (struct imsm_update_activate_spare *) mu->buf; | |
5402 | ||
5403 | for (di = rv ; di ; di = di->next) { | |
5404 | u->type = update_activate_spare; | |
d23fe947 DW |
5405 | u->dl = (struct dl *) di->devs; |
5406 | di->devs = NULL; | |
88758e9d DW |
5407 | u->slot = di->disk.raid_disk; |
5408 | u->array = inst; | |
5409 | u->next = u + 1; | |
5410 | u++; | |
5411 | } | |
5412 | (u-1)->next = NULL; | |
5413 | *updates = mu; | |
5414 | ||
5415 | return rv; | |
5416 | } | |
5417 | ||
54c2c1ea | 5418 | static int disks_overlap(struct intel_super *super, int idx, struct imsm_update_create_array *u) |
8273f55e | 5419 | { |
54c2c1ea DW |
5420 | struct imsm_dev *dev = get_imsm_dev(super, idx); |
5421 | struct imsm_map *map = get_imsm_map(dev, 0); | |
5422 | struct imsm_map *new_map = get_imsm_map(&u->dev, 0); | |
5423 | struct disk_info *inf = get_disk_info(u); | |
5424 | struct imsm_disk *disk; | |
8273f55e DW |
5425 | int i; |
5426 | int j; | |
8273f55e | 5427 | |
54c2c1ea DW |
5428 | for (i = 0; i < map->num_members; i++) { |
5429 | disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i)); | |
5430 | for (j = 0; j < new_map->num_members; j++) | |
5431 | if (serialcmp(disk->serial, inf[j].serial) == 0) | |
8273f55e DW |
5432 | return 1; |
5433 | } | |
5434 | ||
5435 | return 0; | |
5436 | } | |
5437 | ||
1a64be56 LM |
5438 | |
5439 | static struct dl *get_disk_super(struct intel_super *super, int major, int minor) | |
5440 | { | |
5441 | struct dl *dl = NULL; | |
5442 | for (dl = super->disks; dl; dl = dl->next) | |
5443 | if ((dl->major == major) && (dl->minor == minor)) | |
5444 | return dl; | |
5445 | return NULL; | |
5446 | } | |
5447 | ||
5448 | static int remove_disk_super(struct intel_super *super, int major, int minor) | |
5449 | { | |
5450 | struct dl *prev = NULL; | |
5451 | struct dl *dl; | |
5452 | ||
5453 | prev = NULL; | |
5454 | for (dl = super->disks; dl; dl = dl->next) { | |
5455 | if ((dl->major == major) && (dl->minor == minor)) { | |
5456 | /* remove */ | |
5457 | if (prev) | |
5458 | prev->next = dl->next; | |
5459 | else | |
5460 | super->disks = dl->next; | |
5461 | dl->next = NULL; | |
5462 | __free_imsm_disk(dl); | |
5463 | dprintf("%s: removed %x:%x\n", | |
5464 | __func__, major, minor); | |
5465 | break; | |
5466 | } | |
5467 | prev = dl; | |
5468 | } | |
5469 | return 0; | |
5470 | } | |
5471 | ||
f21e18ca | 5472 | static void imsm_delete(struct intel_super *super, struct dl **dlp, unsigned index); |
ae6aad82 | 5473 | |
1a64be56 LM |
5474 | static int add_remove_disk_update(struct intel_super *super) |
5475 | { | |
5476 | int check_degraded = 0; | |
5477 | struct dl *disk = NULL; | |
5478 | /* add/remove some spares to/from the metadata/contrainer */ | |
5479 | while (super->disk_mgmt_list) { | |
5480 | struct dl *disk_cfg; | |
5481 | ||
5482 | disk_cfg = super->disk_mgmt_list; | |
5483 | super->disk_mgmt_list = disk_cfg->next; | |
5484 | disk_cfg->next = NULL; | |
5485 | ||
5486 | if (disk_cfg->action == DISK_ADD) { | |
5487 | disk_cfg->next = super->disks; | |
5488 | super->disks = disk_cfg; | |
5489 | check_degraded = 1; | |
5490 | dprintf("%s: added %x:%x\n", | |
5491 | __func__, disk_cfg->major, | |
5492 | disk_cfg->minor); | |
5493 | } else if (disk_cfg->action == DISK_REMOVE) { | |
5494 | dprintf("Disk remove action processed: %x.%x\n", | |
5495 | disk_cfg->major, disk_cfg->minor); | |
5496 | disk = get_disk_super(super, | |
5497 | disk_cfg->major, | |
5498 | disk_cfg->minor); | |
5499 | if (disk) { | |
5500 | /* store action status */ | |
5501 | disk->action = DISK_REMOVE; | |
5502 | /* remove spare disks only */ | |
5503 | if (disk->index == -1) { | |
5504 | remove_disk_super(super, | |
5505 | disk_cfg->major, | |
5506 | disk_cfg->minor); | |
5507 | } | |
5508 | } | |
5509 | /* release allocate disk structure */ | |
5510 | __free_imsm_disk(disk_cfg); | |
5511 | } | |
5512 | } | |
5513 | return check_degraded; | |
5514 | } | |
5515 | ||
e8319a19 DW |
5516 | static void imsm_process_update(struct supertype *st, |
5517 | struct metadata_update *update) | |
5518 | { | |
5519 | /** | |
5520 | * crack open the metadata_update envelope to find the update record | |
5521 | * update can be one of: | |
d195167d AK |
5522 | * update_reshape_container_disks - all the arrays in the container |
5523 | * are being reshaped to have more devices. We need to mark | |
5524 | * the arrays for general migration and convert selected spares | |
5525 | * into active devices. | |
5526 | * update_activate_spare - a spare device has replaced a failed | |
e8319a19 DW |
5527 | * device in an array, update the disk_ord_tbl. If this disk is |
5528 | * present in all member arrays then also clear the SPARE_DISK | |
5529 | * flag | |
d195167d AK |
5530 | * update_create_array |
5531 | * update_kill_array | |
5532 | * update_rename_array | |
5533 | * update_add_remove_disk | |
e8319a19 DW |
5534 | */ |
5535 | struct intel_super *super = st->sb; | |
4d7b1503 | 5536 | struct imsm_super *mpb; |
e8319a19 DW |
5537 | enum imsm_update_type type = *(enum imsm_update_type *) update->buf; |
5538 | ||
4d7b1503 DW |
5539 | /* update requires a larger buf but the allocation failed */ |
5540 | if (super->next_len && !super->next_buf) { | |
5541 | super->next_len = 0; | |
5542 | return; | |
5543 | } | |
5544 | ||
5545 | if (super->next_buf) { | |
5546 | memcpy(super->next_buf, super->buf, super->len); | |
5547 | free(super->buf); | |
5548 | super->len = super->next_len; | |
5549 | super->buf = super->next_buf; | |
5550 | ||
5551 | super->next_len = 0; | |
5552 | super->next_buf = NULL; | |
5553 | } | |
5554 | ||
5555 | mpb = super->anchor; | |
5556 | ||
e8319a19 | 5557 | switch (type) { |
78b10e66 | 5558 | case update_reshape_container_disks: { |
d195167d AK |
5559 | struct imsm_update_reshape *u = (void *)update->buf; |
5560 | struct dl *new_disk; | |
5561 | struct intel_dev *id; | |
5562 | int i; | |
5563 | int delta_disks = u->new_raid_disks - u->old_raid_disks; | |
5564 | void **tofree = NULL; | |
5565 | ||
5566 | dprintf("imsm: imsm_process_update() for update_reshape\n"); | |
5567 | ||
5568 | /* enable spares to use in array */ | |
5569 | for (i = 0; i < delta_disks; i++) { | |
5570 | ||
5571 | new_disk = get_disk_super(super, | |
5572 | major(u->new_disks[i]), | |
5573 | minor(u->new_disks[i])); | |
5574 | if (new_disk == NULL || new_disk->index < 0) | |
5575 | goto update_reshape_exit; | |
5576 | ||
5577 | new_disk->index = mpb->num_disks++; | |
5578 | /* slot to fill in autolayout */ | |
5579 | new_disk->raiddisk = new_disk->index; | |
5580 | new_disk->disk.status |= | |
5581 | CONFIGURED_DISK; | |
5582 | new_disk->disk.status &= ~SPARE_DISK; | |
5583 | } | |
5584 | ||
5585 | dprintf("imsm: process_update(): update_reshape: volume set"\ | |
5586 | " mpb->num_raid_devs = %i\n", mpb->num_raid_devs); | |
5587 | /* manage changes in volumes | |
5588 | */ | |
5589 | for (id = super->devlist ; id; id = id->next) { | |
5590 | void **sp = update->space_list; | |
5591 | struct imsm_dev *newdev; | |
5592 | struct imsm_map *newmap, *oldmap; | |
5593 | ||
5594 | if (!sp) | |
5595 | continue; | |
5596 | update->space_list = *sp; | |
5597 | newdev = (void*)sp; | |
5598 | /* Copy the dev, but not (all of) the map */ | |
5599 | memcpy(newdev, id->dev, sizeof(*newdev)); | |
5600 | oldmap = get_imsm_map(id->dev, 0); | |
5601 | newmap = get_imsm_map(newdev, 0); | |
5602 | /* Copy the current map */ | |
5603 | memcpy(newmap, oldmap, sizeof_imsm_map(oldmap)); | |
5604 | newdev->vol.migr_state = 1; | |
5605 | newdev->vol.curr_migr_unit = 0; | |
5606 | newdev->vol.migr_type = MIGR_GEN_MIGR; | |
5607 | newmap->num_members = u->new_raid_disks; | |
5608 | for (i = 0; i < delta_disks; i++) { | |
5609 | set_imsm_ord_tbl_ent(newmap, | |
5610 | u->old_raid_disks + i, | |
5611 | u->old_raid_disks + i); | |
5612 | } | |
5613 | /* New map is correct, now need to save old map */ | |
5614 | oldmap = get_imsm_map(newdev, 1); | |
5615 | memcpy(newmap, oldmap, sizeof_imsm_map(oldmap)); | |
5616 | ||
5617 | sp = (void **)id->dev; | |
5618 | id->dev = newdev; | |
5619 | *sp = tofree; | |
5620 | tofree = sp; | |
5621 | } | |
5622 | ||
5623 | update->space_list = tofree; | |
5624 | super->updates_pending++; | |
5625 | update_reshape_exit: | |
78b10e66 N |
5626 | break; |
5627 | } | |
e8319a19 DW |
5628 | case update_activate_spare: { |
5629 | struct imsm_update_activate_spare *u = (void *) update->buf; | |
949c47a0 | 5630 | struct imsm_dev *dev = get_imsm_dev(super, u->array); |
a965f303 | 5631 | struct imsm_map *map = get_imsm_map(dev, 0); |
0c046afd | 5632 | struct imsm_map *migr_map; |
e8319a19 DW |
5633 | struct active_array *a; |
5634 | struct imsm_disk *disk; | |
0c046afd | 5635 | __u8 to_state; |
e8319a19 | 5636 | struct dl *dl; |
e8319a19 | 5637 | unsigned int found; |
0c046afd DW |
5638 | int failed; |
5639 | int victim = get_imsm_disk_idx(dev, u->slot); | |
e8319a19 DW |
5640 | int i; |
5641 | ||
5642 | for (dl = super->disks; dl; dl = dl->next) | |
d23fe947 | 5643 | if (dl == u->dl) |
e8319a19 DW |
5644 | break; |
5645 | ||
5646 | if (!dl) { | |
5647 | fprintf(stderr, "error: imsm_activate_spare passed " | |
1f24f035 DW |
5648 | "an unknown disk (index: %d)\n", |
5649 | u->dl->index); | |
e8319a19 DW |
5650 | return; |
5651 | } | |
5652 | ||
5653 | super->updates_pending++; | |
5654 | ||
0c046afd DW |
5655 | /* count failures (excluding rebuilds and the victim) |
5656 | * to determine map[0] state | |
5657 | */ | |
5658 | failed = 0; | |
5659 | for (i = 0; i < map->num_members; i++) { | |
5660 | if (i == u->slot) | |
5661 | continue; | |
5662 | disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i)); | |
25ed7e59 | 5663 | if (!disk || is_failed(disk)) |
0c046afd DW |
5664 | failed++; |
5665 | } | |
5666 | ||
d23fe947 DW |
5667 | /* adding a pristine spare, assign a new index */ |
5668 | if (dl->index < 0) { | |
5669 | dl->index = super->anchor->num_disks; | |
5670 | super->anchor->num_disks++; | |
5671 | } | |
d23fe947 | 5672 | disk = &dl->disk; |
f2f27e63 DW |
5673 | disk->status |= CONFIGURED_DISK; |
5674 | disk->status &= ~SPARE_DISK; | |
e8319a19 | 5675 | |
0c046afd DW |
5676 | /* mark rebuild */ |
5677 | to_state = imsm_check_degraded(super, dev, failed); | |
5678 | map->map_state = IMSM_T_STATE_DEGRADED; | |
e3bba0e0 | 5679 | migrate(dev, to_state, MIGR_REBUILD); |
0c046afd DW |
5680 | migr_map = get_imsm_map(dev, 1); |
5681 | set_imsm_ord_tbl_ent(map, u->slot, dl->index); | |
5682 | set_imsm_ord_tbl_ent(migr_map, u->slot, dl->index | IMSM_ORD_REBUILD); | |
5683 | ||
148acb7b DW |
5684 | /* update the family_num to mark a new container |
5685 | * generation, being careful to record the existing | |
5686 | * family_num in orig_family_num to clean up after | |
5687 | * earlier mdadm versions that neglected to set it. | |
5688 | */ | |
5689 | if (mpb->orig_family_num == 0) | |
5690 | mpb->orig_family_num = mpb->family_num; | |
5691 | mpb->family_num += super->random; | |
5692 | ||
e8319a19 DW |
5693 | /* count arrays using the victim in the metadata */ |
5694 | found = 0; | |
5695 | for (a = st->arrays; a ; a = a->next) { | |
949c47a0 | 5696 | dev = get_imsm_dev(super, a->info.container_member); |
620b1713 DW |
5697 | map = get_imsm_map(dev, 0); |
5698 | ||
5699 | if (get_imsm_disk_slot(map, victim) >= 0) | |
5700 | found++; | |
e8319a19 DW |
5701 | } |
5702 | ||
24565c9a | 5703 | /* delete the victim if it is no longer being |
e8319a19 DW |
5704 | * utilized anywhere |
5705 | */ | |
e8319a19 | 5706 | if (!found) { |
ae6aad82 | 5707 | struct dl **dlp; |
24565c9a | 5708 | |
47ee5a45 DW |
5709 | /* We know that 'manager' isn't touching anything, |
5710 | * so it is safe to delete | |
5711 | */ | |
24565c9a | 5712 | for (dlp = &super->disks; *dlp; dlp = &(*dlp)->next) |
ae6aad82 DW |
5713 | if ((*dlp)->index == victim) |
5714 | break; | |
47ee5a45 DW |
5715 | |
5716 | /* victim may be on the missing list */ | |
5717 | if (!*dlp) | |
5718 | for (dlp = &super->missing; *dlp; dlp = &(*dlp)->next) | |
5719 | if ((*dlp)->index == victim) | |
5720 | break; | |
24565c9a | 5721 | imsm_delete(super, dlp, victim); |
e8319a19 | 5722 | } |
8273f55e DW |
5723 | break; |
5724 | } | |
5725 | case update_create_array: { | |
5726 | /* someone wants to create a new array, we need to be aware of | |
5727 | * a few races/collisions: | |
5728 | * 1/ 'Create' called by two separate instances of mdadm | |
5729 | * 2/ 'Create' versus 'activate_spare': mdadm has chosen | |
5730 | * devices that have since been assimilated via | |
5731 | * activate_spare. | |
5732 | * In the event this update can not be carried out mdadm will | |
5733 | * (FIX ME) notice that its update did not take hold. | |
5734 | */ | |
5735 | struct imsm_update_create_array *u = (void *) update->buf; | |
ba2de7ba | 5736 | struct intel_dev *dv; |
8273f55e DW |
5737 | struct imsm_dev *dev; |
5738 | struct imsm_map *map, *new_map; | |
5739 | unsigned long long start, end; | |
5740 | unsigned long long new_start, new_end; | |
5741 | int i; | |
54c2c1ea DW |
5742 | struct disk_info *inf; |
5743 | struct dl *dl; | |
8273f55e DW |
5744 | |
5745 | /* handle racing creates: first come first serve */ | |
5746 | if (u->dev_idx < mpb->num_raid_devs) { | |
5747 | dprintf("%s: subarray %d already defined\n", | |
5748 | __func__, u->dev_idx); | |
ba2de7ba | 5749 | goto create_error; |
8273f55e DW |
5750 | } |
5751 | ||
5752 | /* check update is next in sequence */ | |
5753 | if (u->dev_idx != mpb->num_raid_devs) { | |
6a3e913e DW |
5754 | dprintf("%s: can not create array %d expected index %d\n", |
5755 | __func__, u->dev_idx, mpb->num_raid_devs); | |
ba2de7ba | 5756 | goto create_error; |
8273f55e DW |
5757 | } |
5758 | ||
a965f303 | 5759 | new_map = get_imsm_map(&u->dev, 0); |
8273f55e DW |
5760 | new_start = __le32_to_cpu(new_map->pba_of_lba0); |
5761 | new_end = new_start + __le32_to_cpu(new_map->blocks_per_member); | |
54c2c1ea | 5762 | inf = get_disk_info(u); |
8273f55e DW |
5763 | |
5764 | /* handle activate_spare versus create race: | |
5765 | * check to make sure that overlapping arrays do not include | |
5766 | * overalpping disks | |
5767 | */ | |
5768 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
949c47a0 | 5769 | dev = get_imsm_dev(super, i); |
a965f303 | 5770 | map = get_imsm_map(dev, 0); |
8273f55e DW |
5771 | start = __le32_to_cpu(map->pba_of_lba0); |
5772 | end = start + __le32_to_cpu(map->blocks_per_member); | |
5773 | if ((new_start >= start && new_start <= end) || | |
5774 | (start >= new_start && start <= new_end)) | |
54c2c1ea DW |
5775 | /* overlap */; |
5776 | else | |
5777 | continue; | |
5778 | ||
5779 | if (disks_overlap(super, i, u)) { | |
8273f55e | 5780 | dprintf("%s: arrays overlap\n", __func__); |
ba2de7ba | 5781 | goto create_error; |
8273f55e DW |
5782 | } |
5783 | } | |
8273f55e | 5784 | |
949c47a0 DW |
5785 | /* check that prepare update was successful */ |
5786 | if (!update->space) { | |
5787 | dprintf("%s: prepare update failed\n", __func__); | |
ba2de7ba | 5788 | goto create_error; |
949c47a0 DW |
5789 | } |
5790 | ||
54c2c1ea DW |
5791 | /* check that all disks are still active before committing |
5792 | * changes. FIXME: could we instead handle this by creating a | |
5793 | * degraded array? That's probably not what the user expects, | |
5794 | * so better to drop this update on the floor. | |
5795 | */ | |
5796 | for (i = 0; i < new_map->num_members; i++) { | |
5797 | dl = serial_to_dl(inf[i].serial, super); | |
5798 | if (!dl) { | |
5799 | dprintf("%s: disk disappeared\n", __func__); | |
ba2de7ba | 5800 | goto create_error; |
54c2c1ea | 5801 | } |
949c47a0 DW |
5802 | } |
5803 | ||
8273f55e | 5804 | super->updates_pending++; |
54c2c1ea DW |
5805 | |
5806 | /* convert spares to members and fixup ord_tbl */ | |
5807 | for (i = 0; i < new_map->num_members; i++) { | |
5808 | dl = serial_to_dl(inf[i].serial, super); | |
5809 | if (dl->index == -1) { | |
5810 | dl->index = mpb->num_disks; | |
5811 | mpb->num_disks++; | |
5812 | dl->disk.status |= CONFIGURED_DISK; | |
5813 | dl->disk.status &= ~SPARE_DISK; | |
5814 | } | |
5815 | set_imsm_ord_tbl_ent(new_map, i, dl->index); | |
5816 | } | |
5817 | ||
ba2de7ba DW |
5818 | dv = update->space; |
5819 | dev = dv->dev; | |
949c47a0 DW |
5820 | update->space = NULL; |
5821 | imsm_copy_dev(dev, &u->dev); | |
ba2de7ba DW |
5822 | dv->index = u->dev_idx; |
5823 | dv->next = super->devlist; | |
5824 | super->devlist = dv; | |
8273f55e | 5825 | mpb->num_raid_devs++; |
8273f55e | 5826 | |
4d1313e9 | 5827 | imsm_update_version_info(super); |
8273f55e | 5828 | break; |
ba2de7ba DW |
5829 | create_error: |
5830 | /* mdmon knows how to release update->space, but not | |
5831 | * ((struct intel_dev *) update->space)->dev | |
5832 | */ | |
5833 | if (update->space) { | |
5834 | dv = update->space; | |
5835 | free(dv->dev); | |
5836 | } | |
8273f55e | 5837 | break; |
e8319a19 | 5838 | } |
33414a01 DW |
5839 | case update_kill_array: { |
5840 | struct imsm_update_kill_array *u = (void *) update->buf; | |
5841 | int victim = u->dev_idx; | |
5842 | struct active_array *a; | |
5843 | struct intel_dev **dp; | |
5844 | struct imsm_dev *dev; | |
5845 | ||
5846 | /* sanity check that we are not affecting the uuid of | |
5847 | * active arrays, or deleting an active array | |
5848 | * | |
5849 | * FIXME when immutable ids are available, but note that | |
5850 | * we'll also need to fixup the invalidated/active | |
5851 | * subarray indexes in mdstat | |
5852 | */ | |
5853 | for (a = st->arrays; a; a = a->next) | |
5854 | if (a->info.container_member >= victim) | |
5855 | break; | |
5856 | /* by definition if mdmon is running at least one array | |
5857 | * is active in the container, so checking | |
5858 | * mpb->num_raid_devs is just extra paranoia | |
5859 | */ | |
5860 | dev = get_imsm_dev(super, victim); | |
5861 | if (a || !dev || mpb->num_raid_devs == 1) { | |
5862 | dprintf("failed to delete subarray-%d\n", victim); | |
5863 | break; | |
5864 | } | |
5865 | ||
5866 | for (dp = &super->devlist; *dp;) | |
f21e18ca | 5867 | if ((*dp)->index == (unsigned)super->current_vol) { |
33414a01 DW |
5868 | *dp = (*dp)->next; |
5869 | } else { | |
f21e18ca | 5870 | if ((*dp)->index > (unsigned)victim) |
33414a01 DW |
5871 | (*dp)->index--; |
5872 | dp = &(*dp)->next; | |
5873 | } | |
5874 | mpb->num_raid_devs--; | |
5875 | super->updates_pending++; | |
5876 | break; | |
5877 | } | |
aa534678 DW |
5878 | case update_rename_array: { |
5879 | struct imsm_update_rename_array *u = (void *) update->buf; | |
5880 | char name[MAX_RAID_SERIAL_LEN+1]; | |
5881 | int target = u->dev_idx; | |
5882 | struct active_array *a; | |
5883 | struct imsm_dev *dev; | |
5884 | ||
5885 | /* sanity check that we are not affecting the uuid of | |
5886 | * an active array | |
5887 | */ | |
5888 | snprintf(name, MAX_RAID_SERIAL_LEN, "%s", (char *) u->name); | |
5889 | name[MAX_RAID_SERIAL_LEN] = '\0'; | |
5890 | for (a = st->arrays; a; a = a->next) | |
5891 | if (a->info.container_member == target) | |
5892 | break; | |
5893 | dev = get_imsm_dev(super, u->dev_idx); | |
5894 | if (a || !dev || !check_name(super, name, 1)) { | |
5895 | dprintf("failed to rename subarray-%d\n", target); | |
5896 | break; | |
5897 | } | |
5898 | ||
cdbe98cd | 5899 | snprintf((char *) dev->volume, MAX_RAID_SERIAL_LEN, "%s", name); |
aa534678 DW |
5900 | super->updates_pending++; |
5901 | break; | |
5902 | } | |
1a64be56 | 5903 | case update_add_remove_disk: { |
43dad3d6 | 5904 | /* we may be able to repair some arrays if disks are |
1a64be56 LM |
5905 | * being added, check teh status of add_remove_disk |
5906 | * if discs has been added. | |
5907 | */ | |
5908 | if (add_remove_disk_update(super)) { | |
43dad3d6 | 5909 | struct active_array *a; |
072b727f DW |
5910 | |
5911 | super->updates_pending++; | |
1a64be56 | 5912 | for (a = st->arrays; a; a = a->next) |
43dad3d6 DW |
5913 | a->check_degraded = 1; |
5914 | } | |
43dad3d6 | 5915 | break; |
e8319a19 | 5916 | } |
1a64be56 LM |
5917 | default: |
5918 | fprintf(stderr, "error: unsuported process update type:" | |
5919 | "(type: %d)\n", type); | |
5920 | } | |
e8319a19 | 5921 | } |
88758e9d | 5922 | |
8273f55e DW |
5923 | static void imsm_prepare_update(struct supertype *st, |
5924 | struct metadata_update *update) | |
5925 | { | |
949c47a0 | 5926 | /** |
4d7b1503 DW |
5927 | * Allocate space to hold new disk entries, raid-device entries or a new |
5928 | * mpb if necessary. The manager synchronously waits for updates to | |
5929 | * complete in the monitor, so new mpb buffers allocated here can be | |
5930 | * integrated by the monitor thread without worrying about live pointers | |
5931 | * in the manager thread. | |
8273f55e | 5932 | */ |
949c47a0 | 5933 | enum imsm_update_type type = *(enum imsm_update_type *) update->buf; |
4d7b1503 DW |
5934 | struct intel_super *super = st->sb; |
5935 | struct imsm_super *mpb = super->anchor; | |
5936 | size_t buf_len; | |
5937 | size_t len = 0; | |
949c47a0 DW |
5938 | |
5939 | switch (type) { | |
78b10e66 | 5940 | case update_reshape_container_disks: { |
d195167d AK |
5941 | /* Every raid device in the container is about to |
5942 | * gain some more devices, and we will enter a | |
5943 | * reconfiguration. | |
5944 | * So each 'imsm_map' will be bigger, and the imsm_vol | |
5945 | * will now hold 2 of them. | |
5946 | * Thus we need new 'struct imsm_dev' allocations sized | |
5947 | * as sizeof_imsm_dev but with more devices in both maps. | |
5948 | */ | |
5949 | struct imsm_update_reshape *u = (void *)update->buf; | |
5950 | struct intel_dev *dl; | |
5951 | void **space_tail = (void**)&update->space_list; | |
5952 | ||
5953 | dprintf("imsm: imsm_prepare_update() for update_reshape\n"); | |
5954 | ||
5955 | for (dl = super->devlist; dl; dl = dl->next) { | |
5956 | int size = sizeof_imsm_dev(dl->dev, 1); | |
5957 | void *s; | |
5958 | size += sizeof(__u32) * 2 * | |
5959 | (u->new_raid_disks - u->old_raid_disks); | |
5960 | s = malloc(size); | |
5961 | if (!s) | |
5962 | break; | |
5963 | *space_tail = s; | |
5964 | space_tail = s; | |
5965 | *space_tail = NULL; | |
5966 | } | |
5967 | ||
5968 | len = disks_to_mpb_size(u->new_raid_disks); | |
5969 | dprintf("New anchor length is %llu\n", (unsigned long long)len); | |
78b10e66 N |
5970 | break; |
5971 | } | |
949c47a0 DW |
5972 | case update_create_array: { |
5973 | struct imsm_update_create_array *u = (void *) update->buf; | |
ba2de7ba | 5974 | struct intel_dev *dv; |
54c2c1ea DW |
5975 | struct imsm_dev *dev = &u->dev; |
5976 | struct imsm_map *map = get_imsm_map(dev, 0); | |
5977 | struct dl *dl; | |
5978 | struct disk_info *inf; | |
5979 | int i; | |
5980 | int activate = 0; | |
949c47a0 | 5981 | |
54c2c1ea DW |
5982 | inf = get_disk_info(u); |
5983 | len = sizeof_imsm_dev(dev, 1); | |
ba2de7ba DW |
5984 | /* allocate a new super->devlist entry */ |
5985 | dv = malloc(sizeof(*dv)); | |
5986 | if (dv) { | |
5987 | dv->dev = malloc(len); | |
5988 | if (dv->dev) | |
5989 | update->space = dv; | |
5990 | else { | |
5991 | free(dv); | |
5992 | update->space = NULL; | |
5993 | } | |
5994 | } | |
949c47a0 | 5995 | |
54c2c1ea DW |
5996 | /* count how many spares will be converted to members */ |
5997 | for (i = 0; i < map->num_members; i++) { | |
5998 | dl = serial_to_dl(inf[i].serial, super); | |
5999 | if (!dl) { | |
6000 | /* hmm maybe it failed?, nothing we can do about | |
6001 | * it here | |
6002 | */ | |
6003 | continue; | |
6004 | } | |
6005 | if (count_memberships(dl, super) == 0) | |
6006 | activate++; | |
6007 | } | |
6008 | len += activate * sizeof(struct imsm_disk); | |
949c47a0 DW |
6009 | break; |
6010 | default: | |
6011 | break; | |
6012 | } | |
6013 | } | |
8273f55e | 6014 | |
4d7b1503 DW |
6015 | /* check if we need a larger metadata buffer */ |
6016 | if (super->next_buf) | |
6017 | buf_len = super->next_len; | |
6018 | else | |
6019 | buf_len = super->len; | |
6020 | ||
6021 | if (__le32_to_cpu(mpb->mpb_size) + len > buf_len) { | |
6022 | /* ok we need a larger buf than what is currently allocated | |
6023 | * if this allocation fails process_update will notice that | |
6024 | * ->next_len is set and ->next_buf is NULL | |
6025 | */ | |
6026 | buf_len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + len, 512); | |
6027 | if (super->next_buf) | |
6028 | free(super->next_buf); | |
6029 | ||
6030 | super->next_len = buf_len; | |
1f45a8ad DW |
6031 | if (posix_memalign(&super->next_buf, 512, buf_len) == 0) |
6032 | memset(super->next_buf, 0, buf_len); | |
6033 | else | |
4d7b1503 DW |
6034 | super->next_buf = NULL; |
6035 | } | |
8273f55e DW |
6036 | } |
6037 | ||
ae6aad82 | 6038 | /* must be called while manager is quiesced */ |
f21e18ca | 6039 | static void imsm_delete(struct intel_super *super, struct dl **dlp, unsigned index) |
ae6aad82 DW |
6040 | { |
6041 | struct imsm_super *mpb = super->anchor; | |
ae6aad82 DW |
6042 | struct dl *iter; |
6043 | struct imsm_dev *dev; | |
6044 | struct imsm_map *map; | |
24565c9a DW |
6045 | int i, j, num_members; |
6046 | __u32 ord; | |
ae6aad82 | 6047 | |
24565c9a DW |
6048 | dprintf("%s: deleting device[%d] from imsm_super\n", |
6049 | __func__, index); | |
ae6aad82 DW |
6050 | |
6051 | /* shift all indexes down one */ | |
6052 | for (iter = super->disks; iter; iter = iter->next) | |
f21e18ca | 6053 | if (iter->index > (int)index) |
ae6aad82 | 6054 | iter->index--; |
47ee5a45 | 6055 | for (iter = super->missing; iter; iter = iter->next) |
f21e18ca | 6056 | if (iter->index > (int)index) |
47ee5a45 | 6057 | iter->index--; |
ae6aad82 DW |
6058 | |
6059 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
6060 | dev = get_imsm_dev(super, i); | |
6061 | map = get_imsm_map(dev, 0); | |
24565c9a DW |
6062 | num_members = map->num_members; |
6063 | for (j = 0; j < num_members; j++) { | |
6064 | /* update ord entries being careful not to propagate | |
6065 | * ord-flags to the first map | |
6066 | */ | |
6067 | ord = get_imsm_ord_tbl_ent(dev, j); | |
ae6aad82 | 6068 | |
24565c9a DW |
6069 | if (ord_to_idx(ord) <= index) |
6070 | continue; | |
ae6aad82 | 6071 | |
24565c9a DW |
6072 | map = get_imsm_map(dev, 0); |
6073 | set_imsm_ord_tbl_ent(map, j, ord_to_idx(ord - 1)); | |
6074 | map = get_imsm_map(dev, 1); | |
6075 | if (map) | |
6076 | set_imsm_ord_tbl_ent(map, j, ord - 1); | |
ae6aad82 DW |
6077 | } |
6078 | } | |
6079 | ||
6080 | mpb->num_disks--; | |
6081 | super->updates_pending++; | |
24565c9a DW |
6082 | if (*dlp) { |
6083 | struct dl *dl = *dlp; | |
6084 | ||
6085 | *dlp = (*dlp)->next; | |
6086 | __free_imsm_disk(dl); | |
6087 | } | |
ae6aad82 | 6088 | } |
0e600426 | 6089 | #endif /* MDASSEMBLE */ |
ae6aad82 | 6090 | |
2cda7640 ML |
6091 | static char disk_by_path[] = "/dev/disk/by-path/"; |
6092 | ||
6093 | static const char *imsm_get_disk_controller_domain(const char *path) | |
6094 | { | |
6095 | struct sys_dev *list, *hba = NULL; | |
6096 | char disk_path[PATH_MAX]; | |
6097 | int ahci = 0; | |
6098 | char *dpath = NULL; | |
6099 | ||
6100 | list = find_driver_devices("pci", "ahci"); | |
6101 | for (hba = list; hba; hba = hba->next) | |
6102 | if (devpath_to_vendor(hba->path) == 0x8086) | |
6103 | break; | |
6104 | ||
6105 | if (hba) { | |
6106 | struct stat st; | |
6107 | ||
6108 | strncpy(disk_path, disk_by_path, PATH_MAX - 1); | |
6109 | strncat(disk_path, path, PATH_MAX - strlen(disk_path) - 1); | |
6110 | if (stat(disk_path, &st) == 0) { | |
6111 | dpath = devt_to_devpath(st.st_rdev); | |
6112 | if (dpath) | |
6113 | ahci = path_attached_to_hba(dpath, hba->path); | |
6114 | } | |
6115 | } | |
6116 | dprintf("path: %s(%s) hba: %s attached: %d\n", | |
6117 | path, dpath, (hba) ? hba->path : "NULL", ahci); | |
6118 | free_sys_dev(&list); | |
6119 | if (ahci) | |
6120 | return "ahci"; | |
6121 | else | |
6122 | return NULL; | |
6123 | } | |
6124 | ||
78b10e66 N |
6125 | static int imsm_find_array_minor_by_subdev(int subdev, int container, int *minor) |
6126 | { | |
6127 | char subdev_name[20]; | |
6128 | struct mdstat_ent *mdstat; | |
6129 | ||
6130 | sprintf(subdev_name, "%d", subdev); | |
6131 | mdstat = mdstat_by_subdev(subdev_name, container); | |
6132 | if (!mdstat) | |
6133 | return -1; | |
6134 | ||
6135 | *minor = mdstat->devnum; | |
6136 | free_mdstat(mdstat); | |
6137 | return 0; | |
6138 | } | |
6139 | ||
6140 | static int imsm_reshape_is_allowed_on_container(struct supertype *st, | |
6141 | struct geo_params *geo, | |
6142 | int *old_raid_disks) | |
6143 | { | |
6144 | int ret_val = 0; | |
6145 | struct mdinfo *info, *member; | |
6146 | int devices_that_can_grow = 0; | |
6147 | ||
6148 | dprintf("imsm: imsm_reshape_is_allowed_on_container(ENTER): " | |
6149 | "st->devnum = (%i)\n", | |
6150 | st->devnum); | |
6151 | ||
6152 | if (geo->size != -1 || | |
6153 | geo->level != UnSet || | |
6154 | geo->layout != UnSet || | |
6155 | geo->chunksize != 0 || | |
6156 | geo->raid_disks == UnSet) { | |
6157 | dprintf("imsm: Container operation is allowed for " | |
6158 | "raid disks number change only.\n"); | |
6159 | return ret_val; | |
6160 | } | |
6161 | ||
6162 | info = container_content_imsm(st, NULL); | |
6163 | for (member = info; member; member = member->next) { | |
6164 | int result; | |
6165 | int minor; | |
6166 | ||
6167 | dprintf("imsm: checking device_num: %i\n", | |
6168 | member->container_member); | |
6169 | ||
6170 | if (geo->raid_disks < member->array.raid_disks) { | |
6171 | /* we work on container for Online Capacity Expansion | |
6172 | * only so raid_disks has to grow | |
6173 | */ | |
6174 | dprintf("imsm: for container operation raid disks " | |
6175 | "increase is required\n"); | |
6176 | break; | |
6177 | } | |
6178 | ||
6179 | if ((info->array.level != 0) && | |
6180 | (info->array.level != 5)) { | |
6181 | /* we cannot use this container with other raid level | |
6182 | */ | |
6183 | dprintf("imsm: for container operation wrong"\ | |
6184 | " raid level (%i) detected\n", | |
6185 | info->array.level); | |
6186 | break; | |
6187 | } else { | |
6188 | /* check for platform support | |
6189 | * for this raid level configuration | |
6190 | */ | |
6191 | struct intel_super *super = st->sb; | |
6192 | if (!is_raid_level_supported(super->orom, | |
6193 | member->array.level, | |
6194 | geo->raid_disks)) { | |
6195 | dprintf("platform does not support raid%d with"\ | |
6196 | " %d disk%s\n", | |
6197 | info->array.level, | |
6198 | geo->raid_disks, | |
6199 | geo->raid_disks > 1 ? "s" : ""); | |
6200 | break; | |
6201 | } | |
6202 | } | |
6203 | ||
6204 | if (*old_raid_disks && | |
6205 | info->array.raid_disks != *old_raid_disks) | |
6206 | break; | |
6207 | *old_raid_disks = info->array.raid_disks; | |
6208 | ||
6209 | /* All raid5 and raid0 volumes in container | |
6210 | * have to be ready for Online Capacity Expansion | |
6211 | * so they need to be assembled. We have already | |
6212 | * checked that no recovery etc is happening. | |
6213 | */ | |
6214 | result = imsm_find_array_minor_by_subdev(member->container_member, | |
6215 | st->container_dev, | |
6216 | &minor); | |
6217 | if (result < 0) { | |
6218 | dprintf("imsm: cannot find array\n"); | |
6219 | break; | |
6220 | } | |
6221 | devices_that_can_grow++; | |
6222 | } | |
6223 | sysfs_free(info); | |
6224 | if (!member && devices_that_can_grow) | |
6225 | ret_val = 1; | |
6226 | ||
6227 | if (ret_val) | |
6228 | dprintf("\tContainer operation allowed\n"); | |
6229 | else | |
6230 | dprintf("\tError: %i\n", ret_val); | |
6231 | ||
6232 | return ret_val; | |
6233 | } | |
6234 | ||
6235 | /* Function: get_spares_for_grow | |
6236 | * Description: Allocates memory and creates list of spare devices | |
6237 | * avaliable in container. Checks if spare drive size is acceptable. | |
6238 | * Parameters: Pointer to the supertype structure | |
6239 | * Returns: Pointer to the list of spare devices (mdinfo structure) on success, | |
6240 | * NULL if fail | |
6241 | */ | |
6242 | static struct mdinfo *get_spares_for_grow(struct supertype *st) | |
6243 | { | |
6244 | dev_t dev = 0; | |
6245 | struct mdinfo *disks, *d, **dp; | |
6246 | unsigned long long min_size = min_acceptable_spare_size_imsm(st); | |
6247 | ||
6248 | /* get list of alldisks in container */ | |
6249 | disks = getinfo_super_disks_imsm(st); | |
6250 | ||
6251 | if (!disks) | |
6252 | return NULL; | |
6253 | /* find spare devices on the list */ | |
6254 | dp = &disks->devs; | |
6255 | disks->array.spare_disks = 0; | |
6256 | while (*dp) { | |
6257 | int found = 0; | |
6258 | d = *dp; | |
6259 | if (d->disk.state == 0) { | |
6260 | /* check if size is acceptable */ | |
6261 | unsigned long long dev_size; | |
6262 | dev = makedev(d->disk.major,d->disk.minor); | |
6263 | if (min_size && | |
6264 | dev_size_from_id(dev, &dev_size) && | |
6265 | dev_size >= min_size) { | |
6266 | dev = 0; | |
6267 | found = 1; | |
6268 | } | |
6269 | } | |
6270 | if (found) { | |
6271 | dp = &d->next; | |
6272 | disks->array.spare_disks++; | |
6273 | } else { | |
6274 | *dp = d->next; | |
6275 | d->next = NULL; | |
6276 | sysfs_free(d); | |
6277 | } | |
6278 | } | |
6279 | return disks; | |
6280 | } | |
6281 | ||
6282 | /****************************************************************************** | |
6283 | * function: imsm_create_metadata_update_for_reshape | |
6284 | * Function creates update for whole IMSM container. | |
6285 | * | |
6286 | ******************************************************************************/ | |
6287 | static int imsm_create_metadata_update_for_reshape( | |
6288 | struct supertype *st, | |
6289 | struct geo_params *geo, | |
6290 | int old_raid_disks, | |
6291 | struct imsm_update_reshape **updatep) | |
6292 | { | |
6293 | struct intel_super *super = st->sb; | |
6294 | struct imsm_super *mpb = super->anchor; | |
6295 | int update_memory_size = 0; | |
6296 | struct imsm_update_reshape *u = NULL; | |
6297 | struct mdinfo *spares = NULL; | |
6298 | int i; | |
6299 | int delta_disks = 0; | |
6300 | ||
6301 | dprintf("imsm_update_metadata_for_reshape(enter) raid_disks = %i\n", | |
6302 | geo->raid_disks); | |
6303 | ||
6304 | delta_disks = geo->raid_disks - old_raid_disks; | |
6305 | ||
6306 | /* size of all update data without anchor */ | |
6307 | update_memory_size = sizeof(struct imsm_update_reshape); | |
6308 | ||
6309 | /* now add space for spare disks that we need to add. */ | |
6310 | update_memory_size += sizeof(u->new_disks[0]) * (delta_disks - 1); | |
6311 | ||
6312 | u = calloc(1, update_memory_size); | |
6313 | if (u == NULL) { | |
6314 | dprintf("error: " | |
6315 | "cannot get memory for imsm_update_reshape update\n"); | |
6316 | return 0; | |
6317 | } | |
6318 | u->type = update_reshape_container_disks; | |
6319 | u->old_raid_disks = old_raid_disks; | |
6320 | u->new_raid_disks = geo->raid_disks; | |
6321 | ||
6322 | /* now get spare disks list | |
6323 | */ | |
6324 | spares = get_spares_for_grow(st); | |
6325 | ||
6326 | if (spares == NULL | |
6327 | || delta_disks > spares->array.spare_disks) { | |
6328 | dprintf("imsm: ERROR: Cannot get spare devices.\n"); | |
6329 | goto abort; | |
6330 | } | |
6331 | ||
6332 | /* we have got spares | |
6333 | * update disk list in imsm_disk list table in anchor | |
6334 | */ | |
6335 | dprintf("imsm: %i spares are available.\n\n", | |
6336 | spares->array.spare_disks); | |
6337 | ||
6338 | for (i = 0; i < delta_disks; i++) { | |
6339 | struct mdinfo *dev = spares->devs; | |
6340 | struct dl *dl; | |
6341 | ||
6342 | u->new_disks[i] = makedev(dev->disk.major, | |
6343 | dev->disk.minor); | |
6344 | dl = get_disk_super(super, dev->disk.major, dev->disk.minor); | |
6345 | dl->index = mpb->num_disks++; | |
6346 | } | |
6347 | /* Now update the metadata so that container_content will find | |
6348 | * the new devices | |
6349 | */ | |
6350 | for (i = 0; i < mpb->num_raid_devs; i++) { | |
6351 | int d; | |
6352 | struct imsm_dev *dev = get_imsm_dev(super, i); | |
6353 | struct imsm_map *map = get_imsm_map(dev, 0); | |
6354 | map->num_members = geo->raid_disks; | |
6355 | for (d = 0; d < delta_disks; d++) { | |
6356 | set_imsm_ord_tbl_ent(map, old_raid_disks + d, | |
6357 | mpb->num_disks - delta_disks + d); | |
6358 | } | |
6359 | } | |
6360 | ||
6361 | abort: | |
6362 | /* free spares | |
6363 | */ | |
6364 | sysfs_free(spares); | |
6365 | ||
6366 | if (i == delta_disks) { | |
6367 | *updatep = u; | |
6368 | return update_memory_size; | |
6369 | } | |
6370 | free(u); | |
6371 | ||
6372 | return 0; | |
6373 | } | |
6374 | ||
6375 | ||
6376 | static int imsm_reshape_super(struct supertype *st, long long size, int level, | |
6377 | int layout, int chunksize, int raid_disks, | |
6378 | char *backup, char *dev, int verbouse) | |
6379 | { | |
6380 | /* currently we only support increasing the number of devices | |
6381 | * for a container. This increases the number of device for each | |
6382 | * member array. They must all be RAID0 or RAID5. | |
6383 | */ | |
6384 | ||
6385 | int ret_val = 1; | |
6386 | struct geo_params geo; | |
6387 | ||
6388 | dprintf("imsm: reshape_super called.\n"); | |
6389 | ||
6390 | memset(&geo, sizeof(struct geo_params), 0); | |
6391 | ||
6392 | geo.dev_name = dev; | |
6393 | geo.size = size; | |
6394 | geo.level = level; | |
6395 | geo.layout = layout; | |
6396 | geo.chunksize = chunksize; | |
6397 | geo.raid_disks = raid_disks; | |
6398 | ||
6399 | dprintf("\tfor level : %i\n", geo.level); | |
6400 | dprintf("\tfor raid_disks : %i\n", geo.raid_disks); | |
6401 | ||
6402 | if (experimental() == 0) | |
6403 | return ret_val; | |
6404 | ||
6405 | /* verify reshape conditions | |
6406 | * on container level we can only increase number of devices. */ | |
6407 | if (st->container_dev == st->devnum) { | |
6408 | /* check for delta_disks > 0 | |
6409 | *and supported raid levels 0 and 5 only in container */ | |
6410 | int old_raid_disks = 0; | |
6411 | if (imsm_reshape_is_allowed_on_container( | |
6412 | st, &geo, &old_raid_disks)) { | |
6413 | struct imsm_update_reshape *u = NULL; | |
6414 | int len; | |
6415 | ||
6416 | len = imsm_create_metadata_update_for_reshape( | |
6417 | st, &geo, old_raid_disks, &u); | |
6418 | ||
6419 | if (len) { | |
6420 | ret_val = 0; | |
6421 | append_metadata_update(st, u, len); | |
6422 | } else | |
6423 | dprintf("imsm: Cannot prepare "\ | |
6424 | "update\n"); | |
6425 | } else | |
6426 | dprintf("imsm: Operation is not allowed "\ | |
6427 | "on this container\n"); | |
6428 | } else | |
6429 | dprintf("imsm: not a container operation\n"); | |
6430 | ||
6431 | dprintf("imsm: reshape_super Exit code = %i\n", ret_val); | |
6432 | return ret_val; | |
6433 | } | |
2cda7640 | 6434 | |
cdddbdbc DW |
6435 | struct superswitch super_imsm = { |
6436 | #ifndef MDASSEMBLE | |
6437 | .examine_super = examine_super_imsm, | |
6438 | .brief_examine_super = brief_examine_super_imsm, | |
4737ae25 | 6439 | .brief_examine_subarrays = brief_examine_subarrays_imsm, |
9d84c8ea | 6440 | .export_examine_super = export_examine_super_imsm, |
cdddbdbc DW |
6441 | .detail_super = detail_super_imsm, |
6442 | .brief_detail_super = brief_detail_super_imsm, | |
bf5a934a | 6443 | .write_init_super = write_init_super_imsm, |
0e600426 N |
6444 | .validate_geometry = validate_geometry_imsm, |
6445 | .add_to_super = add_to_super_imsm, | |
1a64be56 | 6446 | .remove_from_super = remove_from_super_imsm, |
d665cc31 | 6447 | .detail_platform = detail_platform_imsm, |
33414a01 | 6448 | .kill_subarray = kill_subarray_imsm, |
aa534678 | 6449 | .update_subarray = update_subarray_imsm, |
2b959fbf | 6450 | .load_container = load_container_imsm, |
cdddbdbc DW |
6451 | #endif |
6452 | .match_home = match_home_imsm, | |
6453 | .uuid_from_super= uuid_from_super_imsm, | |
6454 | .getinfo_super = getinfo_super_imsm, | |
5c4cd5da | 6455 | .getinfo_super_disks = getinfo_super_disks_imsm, |
cdddbdbc DW |
6456 | .update_super = update_super_imsm, |
6457 | ||
6458 | .avail_size = avail_size_imsm, | |
80e7f8c3 | 6459 | .min_acceptable_spare_size = min_acceptable_spare_size_imsm, |
cdddbdbc DW |
6460 | |
6461 | .compare_super = compare_super_imsm, | |
6462 | ||
6463 | .load_super = load_super_imsm, | |
bf5a934a | 6464 | .init_super = init_super_imsm, |
e683ca88 | 6465 | .store_super = store_super_imsm, |
cdddbdbc DW |
6466 | .free_super = free_super_imsm, |
6467 | .match_metadata_desc = match_metadata_desc_imsm, | |
bf5a934a | 6468 | .container_content = container_content_imsm, |
30f58b22 | 6469 | .default_geometry = default_geometry_imsm, |
2cda7640 | 6470 | .get_disk_controller_domain = imsm_get_disk_controller_domain, |
78b10e66 | 6471 | .reshape_super = imsm_reshape_super, |
cdddbdbc | 6472 | |
cdddbdbc | 6473 | .external = 1, |
4cce4069 | 6474 | .name = "imsm", |
845dea95 | 6475 | |
0e600426 | 6476 | #ifndef MDASSEMBLE |
845dea95 NB |
6477 | /* for mdmon */ |
6478 | .open_new = imsm_open_new, | |
ed9d66aa | 6479 | .set_array_state= imsm_set_array_state, |
845dea95 NB |
6480 | .set_disk = imsm_set_disk, |
6481 | .sync_metadata = imsm_sync_metadata, | |
88758e9d | 6482 | .activate_spare = imsm_activate_spare, |
e8319a19 | 6483 | .process_update = imsm_process_update, |
8273f55e | 6484 | .prepare_update = imsm_prepare_update, |
0e600426 | 6485 | #endif /* MDASSEMBLE */ |
cdddbdbc | 6486 | }; |