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a322f70c DW |
1 | /* |
2 | * mdadm - manage Linux "md" devices aka RAID arrays. | |
3 | * | |
4 | * Copyright (C) 2006-2007 Neil Brown <neilb@suse.de> | |
5 | * | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | * | |
21 | * Author: Neil Brown | |
22 | * Email: <neil@brown.name> | |
23 | * | |
24 | * Specifications for DDF takes from Common RAID DDF Specification Revision 1.2 | |
25 | * (July 28 2006). Reused by permission of SNIA. | |
26 | */ | |
27 | ||
28 | #define HAVE_STDINT_H 1 | |
29 | #include "mdadm.h" | |
30 | #include "sha1.h" | |
31 | #include <values.h> | |
32 | ||
33 | static inline int ROUND_UP(int a, int base) | |
34 | { | |
35 | return ((a+base-1)/base)*base; | |
36 | } | |
37 | ||
38 | /* a non-official T10 name for creation GUIDs */ | |
39 | static char T10[] = "Linux-MD"; | |
40 | ||
41 | /* DDF timestamps are 1980 based, so we need to add | |
42 | * second-in-decade-of-seventies to convert to linux timestamps. | |
43 | * 10 years with 2 leap years. | |
44 | */ | |
45 | #define DECADE (3600*24*(365*10+2)) | |
46 | unsigned long crc32( | |
47 | unsigned long crc, | |
48 | const unsigned char *buf, | |
49 | unsigned len); | |
50 | ||
51 | /* The DDF metadata handling. | |
52 | * DDF metadata lives at the end of the device. | |
53 | * The last 512 byte block provides an 'anchor' which is used to locate | |
54 | * the rest of the metadata which usually lives immediately behind the anchor. | |
55 | * | |
56 | * Note: | |
57 | * - all multibyte numeric fields are bigendian. | |
58 | * - all strings are space padded. | |
59 | * | |
60 | */ | |
61 | ||
62 | /* Primary Raid Level (PRL) */ | |
63 | #define DDF_RAID0 0x00 | |
64 | #define DDF_RAID1 0x01 | |
65 | #define DDF_RAID3 0x03 | |
66 | #define DDF_RAID4 0x04 | |
67 | #define DDF_RAID5 0x05 | |
68 | #define DDF_RAID1E 0x11 | |
69 | #define DDF_JBOD 0x0f | |
70 | #define DDF_CONCAT 0x1f | |
71 | #define DDF_RAID5E 0x15 | |
72 | #define DDF_RAID5EE 0x25 | |
73 | #define DDF_RAID6 0x16 /* Vendor unique layout */ | |
74 | ||
75 | /* Raid Level Qualifier (RLQ) */ | |
76 | #define DDF_RAID0_SIMPLE 0x00 | |
77 | #define DDF_RAID1_SIMPLE 0x00 /* just 2 devices in this plex */ | |
78 | #define DDF_RAID1_MULTI 0x01 /* exactly 3 devices in this plex */ | |
79 | #define DDF_RAID3_0 0x00 /* parity in first extent */ | |
80 | #define DDF_RAID3_N 0x01 /* parity in last extent */ | |
81 | #define DDF_RAID4_0 0x00 /* parity in first extent */ | |
82 | #define DDF_RAID4_N 0x01 /* parity in last extent */ | |
83 | /* these apply to raid5e and raid5ee as well */ | |
84 | #define DDF_RAID5_0_RESTART 0x00 /* same as 'right asymmetric' - layout 1 */ | |
85 | #define DDF_RAID5_N_RESTART 0x02 /* same as 'left asymmetric' - layout 0 */ | |
86 | #define DDF_RAID5_N_CONTINUE 0x03 /* same as 'left symmetric' - layout 2 */ | |
87 | ||
88 | #define DDF_RAID1E_ADJACENT 0x00 /* raid10 nearcopies==2 */ | |
89 | #define DDF_RAID1E_OFFSET 0x01 /* raid10 offsetcopies==2 */ | |
90 | ||
91 | /* Secondary RAID Level (SRL) */ | |
92 | #define DDF_2STRIPED 0x00 /* This is weirder than RAID0 !! */ | |
93 | #define DDF_2MIRRORED 0x01 | |
94 | #define DDF_2CONCAT 0x02 | |
95 | #define DDF_2SPANNED 0x03 /* This is also weird - be careful */ | |
96 | ||
97 | /* Magic numbers */ | |
98 | #define DDF_HEADER_MAGIC __cpu_to_be32(0xDE11DE11) | |
99 | #define DDF_CONTROLLER_MAGIC __cpu_to_be32(0xAD111111) | |
100 | #define DDF_PHYS_RECORDS_MAGIC __cpu_to_be32(0x22222222) | |
101 | #define DDF_PHYS_DATA_MAGIC __cpu_to_be32(0x33333333) | |
102 | #define DDF_VIRT_RECORDS_MAGIC __cpu_to_be32(0xDDDDDDDD) | |
103 | #define DDF_VD_CONF_MAGIC __cpu_to_be32(0xEEEEEEEE) | |
104 | #define DDF_SPARE_ASSIGN_MAGIC __cpu_to_be32(0x55555555) | |
105 | #define DDF_VU_CONF_MAGIC __cpu_to_be32(0x88888888) | |
106 | #define DDF_VENDOR_LOG_MAGIC __cpu_to_be32(0x01dBEEF0) | |
107 | #define DDF_BBM_LOG_MAGIC __cpu_to_be32(0xABADB10C) | |
108 | ||
109 | #define DDF_GUID_LEN 24 | |
110 | #define DDF_REVISION "01.00.00" | |
111 | ||
112 | struct ddf_header { | |
113 | __u32 magic; | |
114 | __u32 crc; | |
115 | char guid[DDF_GUID_LEN]; | |
116 | char revision[8]; /* 01.00.00 */ | |
117 | __u32 seq; /* starts at '1' */ | |
118 | __u32 timestamp; | |
119 | __u8 openflag; | |
120 | __u8 foreignflag; | |
121 | __u8 enforcegroups; | |
122 | __u8 pad0; /* 0xff */ | |
123 | __u8 pad1[12]; /* 12 * 0xff */ | |
124 | /* 64 bytes so far */ | |
125 | __u8 header_ext[32]; /* reserved: fill with 0xff */ | |
126 | __u64 primary_lba; | |
127 | __u64 secondary_lba; | |
128 | __u8 type; | |
129 | __u8 pad2[3]; /* 0xff */ | |
130 | __u32 workspace_len; /* sectors for vendor space - | |
131 | * at least 32768(sectors) */ | |
132 | __u64 workspace_lba; | |
133 | __u16 max_pd_entries; /* one of 15, 63, 255, 1023, 4095 */ | |
134 | __u16 max_vd_entries; /* 2^(4,6,8,10,12)-1 : i.e. as above */ | |
135 | __u16 max_partitions; /* i.e. max num of configuration | |
136 | record entries per disk */ | |
137 | __u16 config_record_len; /* 1 +ROUNDUP(max_primary_element_entries | |
138 | *12/512) */ | |
139 | __u16 max_primary_element_entries; /* 16, 64, 256, 1024, or 4096 */ | |
140 | __u8 pad3[54]; /* 0xff */ | |
141 | /* 192 bytes so far */ | |
142 | __u32 controller_section_offset; | |
143 | __u32 controller_section_length; | |
144 | __u32 phys_section_offset; | |
145 | __u32 phys_section_length; | |
146 | __u32 virt_section_offset; | |
147 | __u32 virt_section_length; | |
148 | __u32 config_section_offset; | |
149 | __u32 config_section_length; | |
150 | __u32 data_section_offset; | |
151 | __u32 data_section_length; | |
152 | __u32 bbm_section_offset; | |
153 | __u32 bbm_section_length; | |
154 | __u32 diag_space_offset; | |
155 | __u32 diag_space_length; | |
156 | __u32 vendor_offset; | |
157 | __u32 vendor_length; | |
158 | /* 256 bytes so far */ | |
159 | __u8 pad4[256]; /* 0xff */ | |
160 | }; | |
161 | ||
162 | /* type field */ | |
163 | #define DDF_HEADER_ANCHOR 0x00 | |
164 | #define DDF_HEADER_PRIMARY 0x01 | |
165 | #define DDF_HEADER_SECONDARY 0x02 | |
166 | ||
167 | /* The content of the 'controller section' - global scope */ | |
168 | struct ddf_controller_data { | |
169 | __u32 magic; | |
170 | __u32 crc; | |
171 | char guid[DDF_GUID_LEN]; | |
172 | struct controller_type { | |
173 | __u16 vendor_id; | |
174 | __u16 device_id; | |
175 | __u16 sub_vendor_id; | |
176 | __u16 sub_device_id; | |
177 | } type; | |
178 | char product_id[16]; | |
179 | __u8 pad[8]; /* 0xff */ | |
180 | __u8 vendor_data[448]; | |
181 | }; | |
182 | ||
183 | /* The content of phys_section - global scope */ | |
184 | struct phys_disk { | |
185 | __u32 magic; | |
186 | __u32 crc; | |
187 | __u16 used_pdes; | |
188 | __u16 max_pdes; | |
189 | __u8 pad[52]; | |
190 | struct phys_disk_entry { | |
191 | char guid[DDF_GUID_LEN]; | |
192 | __u32 refnum; | |
193 | __u16 type; | |
194 | __u16 state; | |
195 | __u64 config_size; /* DDF structures must be after here */ | |
196 | char path[18]; /* another horrible structure really */ | |
197 | __u8 pad[6]; | |
198 | } entries[0]; | |
199 | }; | |
200 | ||
201 | /* phys_disk_entry.type is a bitmap - bigendian remember */ | |
202 | #define DDF_Forced_PD_GUID 1 | |
203 | #define DDF_Active_in_VD 2 | |
204 | #define DDF_Global_Spare 4 | |
205 | #define DDF_Spare 8 /* overrides Global_spare */ | |
206 | #define DDF_Foreign 16 | |
207 | #define DDF_Legacy 32 /* no DDF on this device */ | |
208 | ||
209 | #define DDF_Interface_mask 0xf00 | |
210 | #define DDF_Interface_SCSI 0x100 | |
211 | #define DDF_Interface_SAS 0x200 | |
212 | #define DDF_Interface_SATA 0x300 | |
213 | #define DDF_Interface_FC 0x400 | |
214 | ||
215 | /* phys_disk_entry.state is a bigendian bitmap */ | |
216 | #define DDF_Online 1 | |
217 | #define DDF_Failed 2 /* overrides 1,4,8 */ | |
218 | #define DDF_Rebuilding 4 | |
219 | #define DDF_Transition 8 | |
220 | #define DDF_SMART 16 | |
221 | #define DDF_ReadErrors 32 | |
222 | #define DDF_Missing 64 | |
223 | ||
224 | /* The content of the virt_section global scope */ | |
225 | struct virtual_disk { | |
226 | __u32 magic; | |
227 | __u32 crc; | |
228 | __u16 populated_vdes; | |
229 | __u16 max_vdes; | |
230 | __u8 pad[52]; | |
231 | struct virtual_entry { | |
232 | char guid[DDF_GUID_LEN]; | |
233 | __u16 unit; | |
234 | __u16 pad0; /* 0xffff */ | |
235 | __u16 guid_crc; | |
236 | __u16 type; | |
237 | __u8 state; | |
238 | __u8 init_state; | |
239 | __u8 pad1[14]; | |
240 | char name[16]; | |
241 | } entries[0]; | |
242 | }; | |
243 | ||
244 | /* virtual_entry.type is a bitmap - bigendian */ | |
245 | #define DDF_Shared 1 | |
246 | #define DDF_Enforce_Groups 2 | |
247 | #define DDF_Unicode 4 | |
248 | #define DDF_Owner_Valid 8 | |
249 | ||
250 | /* virtual_entry.state is a bigendian bitmap */ | |
251 | #define DDF_state_mask 0x7 | |
252 | #define DDF_state_optimal 0x0 | |
253 | #define DDF_state_degraded 0x1 | |
254 | #define DDF_state_deleted 0x2 | |
255 | #define DDF_state_missing 0x3 | |
256 | #define DDF_state_failed 0x4 | |
257 | ||
258 | #define DDF_state_morphing 0x8 | |
259 | #define DDF_state_inconsistent 0x10 | |
260 | ||
261 | /* virtual_entry.init_state is a bigendian bitmap */ | |
262 | #define DDF_initstate_mask 0x03 | |
263 | #define DDF_init_not 0x00 | |
264 | #define DDF_init_quick 0x01 | |
265 | #define DDF_init_full 0x02 | |
266 | ||
267 | #define DDF_access_mask 0xc0 | |
268 | #define DDF_access_rw 0x00 | |
269 | #define DDF_access_ro 0x80 | |
270 | #define DDF_access_blocked 0xc0 | |
271 | ||
272 | /* The content of the config_section - local scope | |
273 | * It has multiple records each config_record_len sectors | |
274 | * They can be vd_config or spare_assign | |
275 | */ | |
276 | ||
277 | struct vd_config { | |
278 | __u32 magic; | |
279 | __u32 crc; | |
280 | char guid[DDF_GUID_LEN]; | |
281 | __u32 timestamp; | |
282 | __u32 seqnum; | |
283 | __u8 pad0[24]; | |
284 | __u16 prim_elmnt_count; | |
285 | __u8 chunk_shift; /* 0 == 512, 1==1024 etc */ | |
286 | __u8 prl; | |
287 | __u8 rlq; | |
288 | __u8 sec_elmnt_count; | |
289 | __u8 sec_elmnt_seq; | |
290 | __u8 srl; | |
598f0d58 NB |
291 | __u64 blocks; /* blocks per component could be different |
292 | * on different component devices...(only | |
293 | * for concat I hope) */ | |
294 | __u64 array_blocks; /* blocks in array */ | |
a322f70c DW |
295 | __u8 pad1[8]; |
296 | __u32 spare_refs[8]; | |
297 | __u8 cache_pol[8]; | |
298 | __u8 bg_rate; | |
299 | __u8 pad2[3]; | |
300 | __u8 pad3[52]; | |
301 | __u8 pad4[192]; | |
302 | __u8 v0[32]; /* reserved- 0xff */ | |
303 | __u8 v1[32]; /* reserved- 0xff */ | |
304 | __u8 v2[16]; /* reserved- 0xff */ | |
305 | __u8 v3[16]; /* reserved- 0xff */ | |
306 | __u8 vendor[32]; | |
307 | __u32 phys_refnum[0]; /* refnum of each disk in sequence */ | |
308 | /*__u64 lba_offset[0]; LBA offset in each phys. Note extents in a | |
309 | bvd are always the same size */ | |
310 | }; | |
311 | ||
312 | /* vd_config.cache_pol[7] is a bitmap */ | |
313 | #define DDF_cache_writeback 1 /* else writethrough */ | |
314 | #define DDF_cache_wadaptive 2 /* only applies if writeback */ | |
315 | #define DDF_cache_readahead 4 | |
316 | #define DDF_cache_radaptive 8 /* only if doing read-ahead */ | |
317 | #define DDF_cache_ifnobatt 16 /* even to write cache if battery is poor */ | |
318 | #define DDF_cache_wallowed 32 /* enable write caching */ | |
319 | #define DDF_cache_rallowed 64 /* enable read caching */ | |
320 | ||
321 | struct spare_assign { | |
322 | __u32 magic; | |
323 | __u32 crc; | |
324 | __u32 timestamp; | |
325 | __u8 reserved[7]; | |
326 | __u8 type; | |
327 | __u16 populated; /* SAEs used */ | |
328 | __u16 max; /* max SAEs */ | |
329 | __u8 pad[8]; | |
330 | struct spare_assign_entry { | |
331 | char guid[DDF_GUID_LEN]; | |
332 | __u16 secondary_element; | |
333 | __u8 pad[6]; | |
334 | } spare_ents[0]; | |
335 | }; | |
336 | /* spare_assign.type is a bitmap */ | |
337 | #define DDF_spare_dedicated 0x1 /* else global */ | |
338 | #define DDF_spare_revertible 0x2 /* else committable */ | |
339 | #define DDF_spare_active 0x4 /* else not active */ | |
340 | #define DDF_spare_affinity 0x8 /* enclosure affinity */ | |
341 | ||
342 | /* The data_section contents - local scope */ | |
343 | struct disk_data { | |
344 | __u32 magic; | |
345 | __u32 crc; | |
346 | char guid[DDF_GUID_LEN]; | |
347 | __u32 refnum; /* crc of some magic drive data ... */ | |
348 | __u8 forced_ref; /* set when above was not result of magic */ | |
349 | __u8 forced_guid; /* set if guid was forced rather than magic */ | |
350 | __u8 vendor[32]; | |
351 | __u8 pad[442]; | |
352 | }; | |
353 | ||
354 | /* bbm_section content */ | |
355 | struct bad_block_log { | |
356 | __u32 magic; | |
357 | __u32 crc; | |
358 | __u16 entry_count; | |
359 | __u32 spare_count; | |
360 | __u8 pad[10]; | |
361 | __u64 first_spare; | |
362 | struct mapped_block { | |
363 | __u64 defective_start; | |
364 | __u32 replacement_start; | |
365 | __u16 remap_count; | |
366 | __u8 pad[2]; | |
367 | } entries[0]; | |
368 | }; | |
369 | ||
370 | /* Struct for internally holding ddf structures */ | |
371 | /* The DDF structure stored on each device is potentially | |
372 | * quite different, as some data is global and some is local. | |
373 | * The global data is: | |
374 | * - ddf header | |
375 | * - controller_data | |
376 | * - Physical disk records | |
377 | * - Virtual disk records | |
378 | * The local data is: | |
379 | * - Configuration records | |
380 | * - Physical Disk data section | |
381 | * ( and Bad block and vendor which I don't care about yet). | |
382 | * | |
383 | * The local data is parsed into separate lists as it is read | |
384 | * and reconstructed for writing. This means that we only need | |
385 | * to make config changes once and they are automatically | |
386 | * propagated to all devices. | |
387 | * Note that the ddf_super has space of the conf and disk data | |
388 | * for this disk and also for a list of all such data. | |
389 | * The list is only used for the superblock that is being | |
390 | * built in Create or Assemble to describe the whole array. | |
391 | */ | |
392 | struct ddf_super { | |
393 | struct ddf_header anchor, primary, secondary, *active; | |
394 | struct ddf_controller_data controller; | |
395 | struct phys_disk *phys; | |
396 | struct virtual_disk *virt; | |
397 | int pdsize, vdsize; | |
398 | int max_part; | |
399 | struct vcl { | |
400 | struct vcl *next; | |
401 | __u64 *lba_offset; /* location in 'conf' of | |
402 | * the lba table */ | |
403 | struct vd_config conf; | |
404 | } *conflist, *newconf; | |
405 | struct dl { | |
406 | struct dl *next; | |
407 | struct disk_data disk; | |
408 | int major, minor; | |
409 | char *devname; | |
410 | int fd; | |
411 | struct vcl *vlist[0]; /* max_part+1 in size */ | |
412 | } *dlist; | |
413 | }; | |
414 | ||
415 | #ifndef offsetof | |
416 | #define offsetof(t,f) ((size_t)&(((t*)0)->f)) | |
417 | #endif | |
418 | ||
2f6079dc | 419 | extern struct superswitch super_ddf_container, super_ddf_bvd; |
a322f70c DW |
420 | |
421 | static int calc_crc(void *buf, int len) | |
422 | { | |
423 | /* crcs are always at the same place as in the ddf_header */ | |
424 | struct ddf_header *ddf = buf; | |
425 | __u32 oldcrc = ddf->crc; | |
426 | __u32 newcrc; | |
427 | ddf->crc = 0xffffffff; | |
428 | ||
429 | newcrc = crc32(0, buf, len); | |
430 | ddf->crc = oldcrc; | |
431 | return newcrc; | |
432 | } | |
433 | ||
434 | static int load_ddf_header(int fd, unsigned long long lba, | |
435 | unsigned long long size, | |
436 | int type, | |
437 | struct ddf_header *hdr, struct ddf_header *anchor) | |
438 | { | |
439 | /* read a ddf header (primary or secondary) from fd/lba | |
440 | * and check that it is consistent with anchor | |
441 | * Need to check: | |
442 | * magic, crc, guid, rev, and LBA's header_type, and | |
443 | * everything after header_type must be the same | |
444 | */ | |
445 | if (lba >= size-1) | |
446 | return 0; | |
447 | ||
448 | if (lseek64(fd, lba<<9, 0) < 0) | |
449 | return 0; | |
450 | ||
451 | if (read(fd, hdr, 512) != 512) | |
452 | return 0; | |
453 | ||
454 | if (hdr->magic != DDF_HEADER_MAGIC) | |
455 | return 0; | |
456 | if (calc_crc(hdr, 512) != hdr->crc) | |
457 | return 0; | |
458 | if (memcmp(anchor->guid, hdr->guid, DDF_GUID_LEN) != 0 || | |
459 | memcmp(anchor->revision, hdr->revision, 8) != 0 || | |
460 | anchor->primary_lba != hdr->primary_lba || | |
461 | anchor->secondary_lba != hdr->secondary_lba || | |
462 | hdr->type != type || | |
463 | memcmp(anchor->pad2, hdr->pad2, 512 - | |
464 | offsetof(struct ddf_header, pad2)) != 0) | |
465 | return 0; | |
466 | ||
467 | /* Looks good enough to me... */ | |
468 | return 1; | |
469 | } | |
470 | ||
471 | static void *load_section(int fd, struct ddf_super *super, void *buf, | |
472 | __u32 offset_be, __u32 len_be, int check) | |
473 | { | |
474 | unsigned long long offset = __be32_to_cpu(offset_be); | |
475 | unsigned long long len = __be32_to_cpu(len_be); | |
476 | int dofree = (buf == NULL); | |
477 | ||
478 | if (check) | |
479 | if (len != 2 && len != 8 && len != 32 | |
480 | && len != 128 && len != 512) | |
481 | return NULL; | |
482 | ||
483 | if (len > 1024) | |
484 | return NULL; | |
485 | if (buf) { | |
486 | /* All pre-allocated sections are a single block */ | |
487 | if (len != 1) | |
488 | return NULL; | |
489 | } else | |
490 | buf = malloc(len<<9); | |
491 | if (!buf) | |
492 | return NULL; | |
493 | ||
494 | if (super->active->type == 1) | |
495 | offset += __be64_to_cpu(super->active->primary_lba); | |
496 | else | |
497 | offset += __be64_to_cpu(super->active->secondary_lba); | |
498 | ||
499 | if (lseek64(fd, offset<<9, 0) != (offset<<9)) { | |
500 | if (dofree) | |
501 | free(buf); | |
502 | return NULL; | |
503 | } | |
504 | if (read(fd, buf, len<<9) != (len<<9)) { | |
505 | if (dofree) | |
506 | free(buf); | |
507 | return NULL; | |
508 | } | |
509 | return buf; | |
510 | } | |
511 | ||
512 | static int load_ddf_headers(int fd, struct ddf_super *super, char *devname) | |
513 | { | |
514 | unsigned long long dsize; | |
515 | ||
516 | get_dev_size(fd, NULL, &dsize); | |
517 | ||
518 | if (lseek64(fd, dsize-512, 0) < 0) { | |
519 | if (devname) | |
520 | fprintf(stderr, | |
521 | Name": Cannot seek to anchor block on %s: %s\n", | |
522 | devname, strerror(errno)); | |
523 | return 1; | |
524 | } | |
525 | if (read(fd, &super->anchor, 512) != 512) { | |
526 | if (devname) | |
527 | fprintf(stderr, | |
528 | Name ": Cannot read anchor block on %s: %s\n", | |
529 | devname, strerror(errno)); | |
530 | return 1; | |
531 | } | |
532 | if (super->anchor.magic != DDF_HEADER_MAGIC) { | |
533 | if (devname) | |
534 | fprintf(stderr, Name ": no DDF anchor found on %s\n", | |
535 | devname); | |
536 | return 2; | |
537 | } | |
538 | if (calc_crc(&super->anchor, 512) != super->anchor.crc) { | |
539 | if (devname) | |
540 | fprintf(stderr, Name ": bad CRC on anchor on %s\n", | |
541 | devname); | |
542 | return 2; | |
543 | } | |
544 | if (memcmp(super->anchor.revision, DDF_REVISION, 8) != 0) { | |
545 | if (devname) | |
546 | fprintf(stderr, Name ": can only support super revision" | |
547 | " %.8s, not %.8s on %s\n", | |
548 | DDF_REVISION, super->anchor.revision, devname); | |
549 | return 2; | |
550 | } | |
551 | if (load_ddf_header(fd, __be64_to_cpu(super->anchor.primary_lba), | |
552 | dsize >> 9, 1, | |
553 | &super->primary, &super->anchor) == 0) { | |
554 | if (devname) | |
555 | fprintf(stderr, | |
556 | Name ": Failed to load primary DDF header " | |
557 | "on %s\n", devname); | |
558 | return 2; | |
559 | } | |
560 | super->active = &super->primary; | |
561 | if (load_ddf_header(fd, __be64_to_cpu(super->anchor.secondary_lba), | |
562 | dsize >> 9, 2, | |
563 | &super->secondary, &super->anchor)) { | |
564 | if ((__be32_to_cpu(super->primary.seq) | |
565 | < __be32_to_cpu(super->secondary.seq) && | |
566 | !super->secondary.openflag) | |
567 | || (__be32_to_cpu(super->primary.seq) | |
568 | == __be32_to_cpu(super->secondary.seq) && | |
569 | super->primary.openflag && !super->secondary.openflag) | |
570 | ) | |
571 | super->active = &super->secondary; | |
572 | } | |
573 | return 0; | |
574 | } | |
575 | ||
576 | static int load_ddf_global(int fd, struct ddf_super *super, char *devname) | |
577 | { | |
578 | void *ok; | |
579 | ok = load_section(fd, super, &super->controller, | |
580 | super->active->controller_section_offset, | |
581 | super->active->controller_section_length, | |
582 | 0); | |
583 | super->phys = load_section(fd, super, NULL, | |
584 | super->active->phys_section_offset, | |
585 | super->active->phys_section_length, | |
586 | 1); | |
587 | super->pdsize = __be32_to_cpu(super->active->phys_section_length) * 512; | |
588 | ||
589 | super->virt = load_section(fd, super, NULL, | |
590 | super->active->virt_section_offset, | |
591 | super->active->virt_section_length, | |
592 | 1); | |
593 | super->vdsize = __be32_to_cpu(super->active->virt_section_length) * 512; | |
594 | if (!ok || | |
595 | !super->phys || | |
596 | !super->virt) { | |
597 | free(super->phys); | |
598 | free(super->virt); | |
599 | return 2; | |
600 | } | |
601 | super->conflist = NULL; | |
602 | super->dlist = NULL; | |
603 | return 0; | |
604 | } | |
605 | ||
606 | static int load_ddf_local(int fd, struct ddf_super *super, | |
607 | char *devname, int keep) | |
608 | { | |
609 | struct dl *dl; | |
610 | struct stat stb; | |
611 | char *conf; | |
612 | int i; | |
613 | int conflen; | |
598f0d58 | 614 | int mppe; |
a322f70c DW |
615 | |
616 | /* First the local disk info */ | |
617 | super->max_part = __be16_to_cpu(super->active->max_partitions); | |
618 | dl = malloc(sizeof(*dl) + | |
619 | (super->max_part+1) * sizeof(dl->vlist[0])); | |
620 | ||
621 | load_section(fd, super, &dl->disk, | |
622 | super->active->data_section_offset, | |
623 | super->active->data_section_length, | |
624 | 0); | |
625 | dl->devname = devname ? strdup(devname) : NULL; | |
598f0d58 | 626 | |
a322f70c DW |
627 | fstat(fd, &stb); |
628 | dl->major = major(stb.st_rdev); | |
629 | dl->minor = minor(stb.st_rdev); | |
630 | dl->next = super->dlist; | |
631 | dl->fd = keep ? fd : -1; | |
632 | for (i=0 ; i < super->max_part + 1 ; i++) | |
633 | dl->vlist[i] = NULL; | |
634 | super->dlist = dl; | |
635 | ||
636 | /* Now the config list. */ | |
637 | /* 'conf' is an array of config entries, some of which are | |
638 | * probably invalid. Those which are good need to be copied into | |
639 | * the conflist | |
640 | */ | |
641 | conflen = __be16_to_cpu(super->active->config_record_len); | |
642 | ||
643 | conf = load_section(fd, super, NULL, | |
644 | super->active->config_section_offset, | |
645 | super->active->config_section_length, | |
646 | 0); | |
647 | ||
648 | for (i = 0; | |
649 | i < __be32_to_cpu(super->active->config_section_length); | |
650 | i += conflen) { | |
651 | struct vd_config *vd = | |
652 | (struct vd_config *)((char*)conf + i*512); | |
653 | struct vcl *vcl; | |
654 | ||
655 | if (vd->magic != DDF_VD_CONF_MAGIC) | |
656 | continue; | |
657 | for (vcl = super->conflist; vcl; vcl = vcl->next) { | |
658 | if (memcmp(vcl->conf.guid, | |
659 | vd->guid, DDF_GUID_LEN) == 0) | |
660 | break; | |
661 | } | |
662 | ||
663 | if (vcl) { | |
664 | dl->vlist[i/conflen] = vcl; | |
665 | if (__be32_to_cpu(vd->seqnum) <= | |
666 | __be32_to_cpu(vcl->conf.seqnum)) | |
667 | continue; | |
668 | } else { | |
669 | vcl = malloc(conflen*512 + offsetof(struct vcl, conf)); | |
670 | vcl->next = super->conflist; | |
671 | super->conflist = vcl; | |
672 | } | |
673 | memcpy(&vcl->conf, vd, conflen*512); | |
598f0d58 | 674 | mppe = __be16_to_cpu(super->anchor.max_primary_element_entries); |
a322f70c | 675 | vcl->lba_offset = (__u64*) |
598f0d58 | 676 | &vcl->conf.phys_refnum[mppe]; |
a322f70c DW |
677 | dl->vlist[i/conflen] = vcl; |
678 | } | |
679 | free(conf); | |
680 | ||
681 | return 0; | |
682 | } | |
683 | ||
684 | #ifndef MDASSEMBLE | |
685 | static int load_super_ddf_all(struct supertype *st, int fd, | |
686 | void **sbp, char *devname, int keep_fd); | |
687 | #endif | |
688 | static int load_super_ddf(struct supertype *st, int fd, | |
689 | char *devname) | |
690 | { | |
691 | unsigned long long dsize; | |
692 | struct ddf_super *super; | |
693 | int rv; | |
694 | ||
695 | #ifndef MDASSEMBLE | |
696 | if (load_super_ddf_all(st, fd, &st->sb, devname, 0) == 0) | |
697 | return 0; | |
698 | #endif | |
699 | ||
700 | if (get_dev_size(fd, devname, &dsize) == 0) | |
701 | return 1; | |
702 | ||
703 | /* 32M is a lower bound */ | |
704 | if (dsize <= 32*1024*1024) { | |
705 | if (devname) { | |
706 | fprintf(stderr, | |
707 | Name ": %s is too small for ddf: " | |
708 | "size is %llu sectors.\n", | |
709 | devname, dsize>>9); | |
710 | return 1; | |
711 | } | |
712 | } | |
713 | if (dsize & 511) { | |
714 | if (devname) { | |
715 | fprintf(stderr, | |
716 | Name ": %s is an odd size for ddf: " | |
717 | "size is %llu bytes.\n", | |
718 | devname, dsize); | |
719 | return 1; | |
720 | } | |
721 | } | |
722 | ||
723 | super = malloc(sizeof(*super)); | |
724 | if (!super) { | |
725 | fprintf(stderr, Name ": malloc of %zu failed.\n", | |
726 | sizeof(*super)); | |
727 | return 1; | |
728 | } | |
729 | ||
730 | rv = load_ddf_headers(fd, super, devname); | |
731 | if (rv) { | |
732 | free(super); | |
733 | return rv; | |
734 | } | |
735 | ||
736 | /* Have valid headers and have chosen the best. Let's read in the rest*/ | |
737 | ||
738 | rv = load_ddf_global(fd, super, devname); | |
739 | ||
740 | if (rv) { | |
741 | if (devname) | |
742 | fprintf(stderr, | |
743 | Name ": Failed to load all information " | |
744 | "sections on %s\n", devname); | |
745 | free(super); | |
746 | return rv; | |
747 | } | |
748 | ||
749 | load_ddf_local(fd, super, devname, 0); | |
750 | ||
751 | /* Should possibly check the sections .... */ | |
752 | ||
753 | st->sb = super; | |
754 | if (st->ss == NULL) { | |
755 | st->ss = &super_ddf; | |
756 | st->minor_version = 0; | |
757 | st->max_devs = 512; | |
758 | } | |
759 | return 0; | |
760 | ||
761 | } | |
762 | ||
763 | static void free_super_ddf(struct supertype *st) | |
764 | { | |
765 | struct ddf_super *ddf = st->sb; | |
766 | if (ddf == NULL) | |
767 | return; | |
768 | free(ddf->phys); | |
769 | free(ddf->virt); | |
770 | while (ddf->conflist) { | |
771 | struct vcl *v = ddf->conflist; | |
772 | ddf->conflist = v->next; | |
773 | free(v); | |
774 | } | |
775 | while (ddf->dlist) { | |
776 | struct dl *d = ddf->dlist; | |
777 | ddf->dlist = d->next; | |
778 | if (d->fd >= 0) | |
779 | close(d->fd); | |
780 | free(d); | |
781 | } | |
782 | free(ddf); | |
783 | st->sb = NULL; | |
784 | } | |
785 | ||
786 | static struct supertype *match_metadata_desc_ddf(char *arg) | |
787 | { | |
788 | /* 'ddf' only support containers */ | |
789 | struct supertype *st; | |
790 | if (strcmp(arg, "ddf") != 0 && | |
791 | strcmp(arg, "default") != 0 | |
792 | ) | |
793 | return NULL; | |
794 | ||
795 | st = malloc(sizeof(*st)); | |
796 | st->ss = &super_ddf; | |
797 | st->max_devs = 512; | |
798 | st->minor_version = 0; | |
799 | st->sb = NULL; | |
800 | return st; | |
801 | } | |
802 | ||
803 | static struct supertype *match_metadata_desc_ddf_bvd(char *arg) | |
804 | { | |
805 | struct supertype *st; | |
806 | if (strcmp(arg, "ddf/bvd") != 0 && | |
807 | strcmp(arg, "bvd") != 0 && | |
808 | strcmp(arg, "default") != 0 | |
809 | ) | |
810 | return NULL; | |
811 | ||
812 | st = malloc(sizeof(*st)); | |
813 | st->ss = &super_ddf_bvd; | |
814 | st->max_devs = 512; | |
815 | st->minor_version = 0; | |
816 | st->sb = NULL; | |
817 | return st; | |
818 | } | |
819 | static struct supertype *match_metadata_desc_ddf_svd(char *arg) | |
820 | { | |
821 | struct supertype *st; | |
822 | if (strcmp(arg, "ddf/svd") != 0 && | |
823 | strcmp(arg, "svd") != 0 && | |
824 | strcmp(arg, "default") != 0 | |
825 | ) | |
826 | return NULL; | |
827 | ||
828 | st = malloc(sizeof(*st)); | |
829 | st->ss = &super_ddf_svd; | |
830 | st->max_devs = 512; | |
831 | st->minor_version = 0; | |
832 | st->sb = NULL; | |
833 | return st; | |
834 | } | |
835 | ||
836 | #ifndef MDASSEMBLE | |
837 | ||
838 | static mapping_t ddf_state[] = { | |
839 | { "Optimal", 0}, | |
840 | { "Degraded", 1}, | |
841 | { "Deleted", 2}, | |
842 | { "Missing", 3}, | |
843 | { "Failed", 4}, | |
844 | { "Partially Optimal", 5}, | |
845 | { "-reserved-", 6}, | |
846 | { "-reserved-", 7}, | |
847 | { NULL, 0} | |
848 | }; | |
849 | ||
850 | static mapping_t ddf_init_state[] = { | |
851 | { "Not Initialised", 0}, | |
852 | { "QuickInit in Progress", 1}, | |
853 | { "Fully Initialised", 2}, | |
854 | { "*UNKNOWN*", 3}, | |
855 | { NULL, 0} | |
856 | }; | |
857 | static mapping_t ddf_access[] = { | |
858 | { "Read/Write", 0}, | |
859 | { "Reserved", 1}, | |
860 | { "Read Only", 2}, | |
861 | { "Blocked (no access)", 3}, | |
862 | { NULL ,0} | |
863 | }; | |
864 | ||
865 | static mapping_t ddf_level[] = { | |
866 | { "RAID0", DDF_RAID0}, | |
867 | { "RAID1", DDF_RAID1}, | |
868 | { "RAID3", DDF_RAID3}, | |
869 | { "RAID4", DDF_RAID4}, | |
870 | { "RAID5", DDF_RAID5}, | |
871 | { "RAID1E",DDF_RAID1E}, | |
872 | { "JBOD", DDF_JBOD}, | |
873 | { "CONCAT",DDF_CONCAT}, | |
874 | { "RAID5E",DDF_RAID5E}, | |
875 | { "RAID5EE",DDF_RAID5EE}, | |
876 | { "RAID6", DDF_RAID6}, | |
877 | { NULL, 0} | |
878 | }; | |
879 | static mapping_t ddf_sec_level[] = { | |
880 | { "Striped", DDF_2STRIPED}, | |
881 | { "Mirrored", DDF_2MIRRORED}, | |
882 | { "Concat", DDF_2CONCAT}, | |
883 | { "Spanned", DDF_2SPANNED}, | |
884 | { NULL, 0} | |
885 | }; | |
886 | #endif | |
887 | ||
888 | struct num_mapping { | |
889 | int num1, num2; | |
890 | }; | |
891 | static struct num_mapping ddf_level_num[] = { | |
892 | { DDF_RAID0, 0 }, | |
893 | { DDF_RAID1, 1 }, | |
894 | { DDF_RAID3, LEVEL_UNSUPPORTED }, | |
895 | { DDF_RAID5, 4 }, | |
896 | { DDF_RAID1E, LEVEL_UNSUPPORTED }, | |
897 | { DDF_JBOD, LEVEL_UNSUPPORTED }, | |
898 | { DDF_CONCAT, LEVEL_LINEAR }, | |
899 | { DDF_RAID5E, LEVEL_UNSUPPORTED }, | |
900 | { DDF_RAID5EE, LEVEL_UNSUPPORTED }, | |
901 | { DDF_RAID6, 6}, | |
902 | { MAXINT, MAXINT } | |
903 | }; | |
904 | ||
905 | static int map_num1(struct num_mapping *map, int num) | |
906 | { | |
907 | int i; | |
908 | for (i=0 ; map[i].num1 != MAXINT; i++) | |
909 | if (map[i].num1 == num) | |
910 | break; | |
911 | return map[i].num2; | |
912 | } | |
913 | ||
914 | #ifndef MDASSEMBLE | |
915 | static void print_guid(char *guid, int tstamp) | |
916 | { | |
917 | /* A GUIDs are part (or all) ASCII and part binary. | |
918 | * They tend to be space padded. | |
919 | * We ignore trailing spaces and print numbers | |
920 | * <0x20 and >=0x7f as \xXX | |
921 | * Some GUIDs have a time stamp in bytes 16-19. | |
922 | * We print that if appropriate | |
923 | */ | |
924 | int l = DDF_GUID_LEN; | |
925 | int i; | |
926 | while (l && guid[l-1] == ' ') | |
927 | l--; | |
928 | for (i=0 ; i<l ; i++) { | |
929 | if (guid[i] >= 0x20 && guid[i] < 0x7f) | |
930 | fputc(guid[i], stdout); | |
931 | else | |
932 | fprintf(stdout, "\\x%02x", guid[i]&255); | |
933 | } | |
934 | if (tstamp) { | |
935 | time_t then = __be32_to_cpu(*(__u32*)(guid+16)) + DECADE; | |
936 | char tbuf[100]; | |
937 | struct tm *tm; | |
938 | tm = localtime(&then); | |
939 | strftime(tbuf, 100, " (%D %T)",tm); | |
940 | fputs(tbuf, stdout); | |
941 | } | |
942 | } | |
943 | ||
944 | static void examine_vd(int n, struct ddf_super *sb, char *guid) | |
945 | { | |
946 | int crl = __be16_to_cpu(sb->anchor.config_record_len); | |
947 | struct vcl *vcl; | |
948 | ||
949 | for (vcl = sb->conflist ; vcl ; vcl = vcl->next) { | |
950 | struct vd_config *vc = &vcl->conf; | |
951 | ||
952 | if (calc_crc(vc, crl*512) != vc->crc) | |
953 | continue; | |
954 | if (memcmp(vc->guid, guid, DDF_GUID_LEN) != 0) | |
955 | continue; | |
956 | ||
957 | /* Ok, we know about this VD, let's give more details */ | |
958 | printf(" Raid Devices[%d] : %d\n", n, | |
959 | __be16_to_cpu(vc->prim_elmnt_count)); | |
960 | printf(" Chunk Size[%d] : %d sectors\n", n, | |
961 | 1 << vc->chunk_shift); | |
962 | printf(" Raid Level[%d] : %s\n", n, | |
963 | map_num(ddf_level, vc->prl)?:"-unknown-"); | |
964 | if (vc->sec_elmnt_count != 1) { | |
965 | printf(" Secondary Position[%d] : %d of %d\n", n, | |
966 | vc->sec_elmnt_seq, vc->sec_elmnt_count); | |
967 | printf(" Secondary Level[%d] : %s\n", n, | |
968 | map_num(ddf_sec_level, vc->srl) ?: "-unknown-"); | |
969 | } | |
970 | printf(" Device Size[%d] : %llu\n", n, | |
971 | __be64_to_cpu(vc->blocks)/2); | |
972 | printf(" Array Size[%d] : %llu\n", n, | |
973 | __be64_to_cpu(vc->array_blocks)/2); | |
974 | } | |
975 | } | |
976 | ||
977 | static void examine_vds(struct ddf_super *sb) | |
978 | { | |
979 | int cnt = __be16_to_cpu(sb->virt->populated_vdes); | |
980 | int i; | |
981 | printf(" Virtual Disks : %d\n", cnt); | |
982 | ||
983 | for (i=0; i<cnt; i++) { | |
984 | struct virtual_entry *ve = &sb->virt->entries[i]; | |
985 | printf(" VD GUID[%d] : ", i); print_guid(ve->guid, 1); | |
986 | printf("\n"); | |
987 | printf(" unit[%d] : %d\n", i, __be16_to_cpu(ve->unit)); | |
988 | printf(" state[%d] : %s, %s%s\n", i, | |
989 | map_num(ddf_state, ve->state & 7), | |
990 | (ve->state & 8) ? "Morphing, ": "", | |
991 | (ve->state & 16)? "Not Consistent" : "Consistent"); | |
992 | printf(" init state[%d] : %s\n", i, | |
993 | map_num(ddf_init_state, ve->init_state&3)); | |
994 | printf(" access[%d] : %s\n", i, | |
995 | map_num(ddf_access, (ve->init_state>>6) & 3)); | |
996 | printf(" Name[%d] : %.16s\n", i, ve->name); | |
997 | examine_vd(i, sb, ve->guid); | |
998 | } | |
999 | if (cnt) printf("\n"); | |
1000 | } | |
1001 | ||
1002 | static void examine_pds(struct ddf_super *sb) | |
1003 | { | |
1004 | int cnt = __be16_to_cpu(sb->phys->used_pdes); | |
1005 | int i; | |
1006 | struct dl *dl; | |
1007 | printf(" Physical Disks : %d\n", cnt); | |
1008 | ||
1009 | for (i=0 ; i<cnt ; i++) { | |
1010 | struct phys_disk_entry *pd = &sb->phys->entries[i]; | |
1011 | int type = __be16_to_cpu(pd->type); | |
1012 | int state = __be16_to_cpu(pd->state); | |
1013 | ||
1014 | printf(" PD GUID[%d] : ", i); print_guid(pd->guid, 0); | |
1015 | printf("\n"); | |
1016 | printf(" ref[%d] : %08x\n", i, | |
1017 | __be32_to_cpu(pd->refnum)); | |
1018 | printf(" mode[%d] : %s%s%s%s%s\n", i, | |
1019 | (type&2) ? "active":"", | |
1020 | (type&4) ? "Global Spare":"", | |
1021 | (type&8) ? "spare" : "", | |
1022 | (type&16)? ", foreign" : "", | |
1023 | (type&32)? "pass-through" : ""); | |
1024 | printf(" state[%d] : %s%s%s%s%s%s%s\n", i, | |
1025 | (state&1)? "Online": "Offline", | |
1026 | (state&2)? ", Failed": "", | |
1027 | (state&4)? ", Rebuilding": "", | |
1028 | (state&8)? ", in-transition": "", | |
1029 | (state&16)? ", SMART errors": "", | |
1030 | (state&32)? ", Unrecovered Read Errors": "", | |
1031 | (state&64)? ", Missing" : ""); | |
1032 | printf(" Avail Size[%d] : %llu K\n", i, | |
1033 | __be64_to_cpu(pd->config_size)>>1); | |
1034 | for (dl = sb->dlist; dl ; dl = dl->next) { | |
1035 | if (dl->disk.refnum == pd->refnum) { | |
1036 | char *dv = map_dev(dl->major, dl->minor, 0); | |
1037 | if (dv) | |
1038 | printf(" Device[%d] : %s\n", | |
1039 | i, dv); | |
1040 | } | |
1041 | } | |
1042 | printf("\n"); | |
1043 | } | |
1044 | } | |
1045 | ||
1046 | static void examine_super_ddf(struct supertype *st, char *homehost) | |
1047 | { | |
1048 | struct ddf_super *sb = st->sb; | |
1049 | ||
1050 | printf(" Magic : %08x\n", __be32_to_cpu(sb->anchor.magic)); | |
1051 | printf(" Version : %.8s\n", sb->anchor.revision); | |
598f0d58 NB |
1052 | printf("Controller GUID : "); print_guid(sb->controller.guid, 0); |
1053 | printf("\n"); | |
1054 | printf(" Container GUID : "); print_guid(sb->anchor.guid, 1); | |
a322f70c DW |
1055 | printf("\n"); |
1056 | printf(" Seq : %08x\n", __be32_to_cpu(sb->active->seq)); | |
1057 | printf(" Redundant hdr : %s\n", sb->secondary.magic == DDF_HEADER_MAGIC | |
1058 | ?"yes" : "no"); | |
1059 | examine_vds(sb); | |
1060 | examine_pds(sb); | |
1061 | } | |
1062 | ||
1063 | static void brief_examine_super_ddf(struct supertype *st) | |
1064 | { | |
1065 | /* We just write a generic DDF ARRAY entry | |
1066 | * The uuid is all hex, 6 groups of 4 bytes | |
1067 | */ | |
1068 | struct ddf_super *ddf = st->sb; | |
1069 | int i; | |
1070 | printf("ARRAY /dev/ddf UUID="); | |
1071 | for (i = 0; i < DDF_GUID_LEN; i++) { | |
1072 | printf("%02x", ddf->anchor.guid[i]); | |
1073 | if ((i&3) == 0 && i != 0) | |
1074 | printf(":"); | |
1075 | } | |
1076 | printf("\n"); | |
1077 | } | |
1078 | ||
1079 | static void detail_super_ddf(struct supertype *st, char *homehost) | |
1080 | { | |
1081 | /* FIXME later | |
1082 | * Could print DDF GUID | |
1083 | * Need to find which array | |
1084 | * If whole, briefly list all arrays | |
1085 | * If one, give name | |
1086 | */ | |
1087 | } | |
1088 | ||
1089 | static void brief_detail_super_ddf(struct supertype *st) | |
1090 | { | |
1091 | /* FIXME I really need to know which array we are detailing. | |
1092 | * Can that be stored in ddf_super?? | |
1093 | */ | |
1094 | // struct ddf_super *ddf = st->sb; | |
1095 | } | |
1096 | ||
1097 | ||
1098 | #endif | |
1099 | ||
1100 | static int match_home_ddf(struct supertype *st, char *homehost) | |
1101 | { | |
1102 | /* It matches 'this' host if the controller is a | |
1103 | * Linux-MD controller with vendor_data matching | |
1104 | * the hostname | |
1105 | */ | |
1106 | struct ddf_super *ddf = st->sb; | |
1107 | int len = strlen(homehost); | |
1108 | ||
1109 | return (memcmp(ddf->controller.guid, T10, 8) == 0 && | |
1110 | len < sizeof(ddf->controller.vendor_data) && | |
1111 | memcmp(ddf->controller.vendor_data, homehost,len) == 0 && | |
1112 | ddf->controller.vendor_data[len] == 0); | |
1113 | } | |
1114 | ||
1115 | static struct vd_config *find_vdcr(struct ddf_super *ddf) | |
1116 | { | |
1117 | /* FIXME this just picks off the first one */ | |
1118 | return &ddf->conflist->conf; | |
1119 | } | |
1120 | ||
1121 | static void uuid_from_super_ddf(struct supertype *st, int uuid[4]) | |
1122 | { | |
1123 | /* The uuid returned here is used for: | |
1124 | * uuid to put into bitmap file (Create, Grow) | |
1125 | * uuid for backup header when saving critical section (Grow) | |
1126 | * comparing uuids when re-adding a device into an array | |
1127 | * For each of these we can make do with a truncated | |
1128 | * or hashed uuid rather than the original, as long as | |
1129 | * everyone agrees. | |
1130 | * In each case the uuid required is that of the data-array, | |
1131 | * not the device-set. | |
1132 | * In the case of SVD we assume the BVD is of interest, | |
1133 | * though that might be the case if a bitmap were made for | |
1134 | * a mirrored SVD - worry about that later. | |
1135 | * So we need to find the VD configuration record for the | |
1136 | * relevant BVD and extract the GUID and Secondary_Element_Seq. | |
1137 | * The first 16 bytes of the sha1 of these is used. | |
1138 | */ | |
1139 | struct ddf_super *ddf = st->sb; | |
1140 | struct vd_config *vd = find_vdcr(ddf); | |
1141 | ||
1142 | if (!vd) | |
1143 | memset(uuid, 0, sizeof (uuid)); | |
1144 | else { | |
1145 | char buf[20]; | |
1146 | struct sha1_ctx ctx; | |
1147 | sha1_init_ctx(&ctx); | |
1148 | sha1_process_bytes(&vd->guid, DDF_GUID_LEN, &ctx); | |
1149 | if (vd->sec_elmnt_count > 1) | |
1150 | sha1_process_bytes(&vd->sec_elmnt_seq, 1, &ctx); | |
1151 | sha1_finish_ctx(&ctx, buf); | |
1152 | memcpy(uuid, buf, sizeof(uuid)); | |
1153 | } | |
1154 | } | |
1155 | ||
1156 | static void getinfo_super_ddf(struct supertype *st, struct mdinfo *info) | |
1157 | { | |
1158 | struct ddf_super *ddf = st->sb; | |
a19c88b8 | 1159 | int i; |
a322f70c DW |
1160 | |
1161 | info->array.major_version = 1000; | |
1162 | info->array.minor_version = 0; /* FIXME use ddf->revision somehow */ | |
1163 | info->array.patch_version = 0; | |
1164 | info->array.raid_disks = __be16_to_cpu(ddf->phys->used_pdes); | |
1165 | info->array.level = LEVEL_CONTAINER; | |
1166 | info->array.layout = 0; | |
1167 | info->array.md_minor = -1; | |
1168 | info->array.ctime = DECADE + __be32_to_cpu(*(__u32*) | |
1169 | (ddf->anchor.guid+16)); | |
1170 | info->array.utime = 0; | |
1171 | info->array.chunk_size = 0; | |
1172 | ||
1173 | // info->data_offset = ???; | |
1174 | // info->component_size = ???; | |
1175 | ||
1176 | info->disk.major = 0; | |
1177 | info->disk.minor = 0; | |
a19c88b8 | 1178 | info->disk.number = __be32_to_cpu(ddf->dlist->disk.refnum); |
a322f70c | 1179 | // info->disk.raid_disk = find refnum in the table and use index; |
a19c88b8 NB |
1180 | info->disk.raid_disk = -1; |
1181 | for (i = 0; i < __be16_to_cpu(ddf->phys->max_pdes) ; i++) | |
1182 | if (ddf->phys->entries[i].refnum == ddf->dlist->disk.refnum) { | |
1183 | info->disk.raid_disk = i; | |
1184 | break; | |
1185 | } | |
1186 | info->disk.state = (1 << MD_DISK_SYNC); | |
1187 | ||
1188 | info->reshape_active = 0; | |
a322f70c DW |
1189 | |
1190 | // uuid_from_super_ddf(info->uuid, sbv); | |
1191 | ||
1192 | // info->name[] ?? ; | |
1193 | } | |
1194 | ||
598f0d58 NB |
1195 | static void getinfo_super_n_container(struct supertype *st, struct mdinfo *info) |
1196 | { | |
1197 | /* just need offset and size */ | |
1198 | struct ddf_super *ddf = st->sb; | |
1199 | int n = info->disk.number; | |
1200 | ||
1201 | info->data_offset = __be64_to_cpu(ddf->phys->entries[n].config_size); | |
1202 | info->component_size = 32*1024*1024 / 512; | |
1203 | } | |
1204 | ||
1205 | static int rlq_to_layout(int rlq, int prl, int raiddisks); | |
1206 | ||
a322f70c DW |
1207 | static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info) |
1208 | { | |
1209 | struct ddf_super *ddf = st->sb; | |
1210 | struct vd_config *vd = find_vdcr(ddf); | |
1211 | ||
1212 | /* FIXME this returns BVD info - what if we want SVD ?? */ | |
1213 | ||
1214 | info->array.major_version = 1000; | |
1215 | info->array.minor_version = 0; /* FIXME use ddf->revision somehow */ | |
1216 | info->array.patch_version = 0; | |
1217 | info->array.raid_disks = __be16_to_cpu(vd->prim_elmnt_count); | |
1218 | info->array.level = map_num1(ddf_level_num, vd->prl); | |
598f0d58 NB |
1219 | info->array.layout = rlq_to_layout(vd->rlq, vd->prl, |
1220 | info->array.raid_disks); | |
a322f70c DW |
1221 | info->array.md_minor = -1; |
1222 | info->array.ctime = DECADE + __be32_to_cpu(*(__u32*)(vd->guid+16)); | |
1223 | info->array.utime = DECADE + __be32_to_cpu(vd->timestamp); | |
1224 | info->array.chunk_size = 512 << vd->chunk_shift; | |
1225 | ||
1226 | // info->data_offset = ???; | |
1227 | // info->component_size = ???; | |
1228 | ||
1229 | info->disk.major = 0; | |
1230 | info->disk.minor = 0; | |
1231 | // info->disk.number = __be32_to_cpu(ddf->disk.refnum); | |
1232 | // info->disk.raid_disk = find refnum in the table and use index; | |
1233 | // info->disk.state = ???; | |
1234 | ||
1235 | uuid_from_super_ddf(st, info->uuid); | |
1236 | ||
1237 | // info->name[] ?? ; | |
1238 | } | |
1239 | ||
598f0d58 NB |
1240 | static void getinfo_super_n_bvd(struct supertype *st, struct mdinfo *info) |
1241 | { | |
1242 | /* Find the particular details for info->disk.raid_disk. | |
1243 | * This includes data_offset, component_size, | |
1244 | */ | |
1245 | struct ddf_super *ddf = st->sb; | |
1246 | __u64 *lba_offset = ddf->newconf->lba_offset; | |
1247 | struct vd_config *conf = &ddf->newconf->conf; | |
1248 | info->data_offset = __be64_to_cpu(lba_offset[info->disk.raid_disk]); | |
1249 | info->component_size = __be64_to_cpu(conf->blocks); | |
1250 | } | |
1251 | ||
a322f70c DW |
1252 | static int update_super_ddf(struct supertype *st, struct mdinfo *info, |
1253 | char *update, | |
1254 | char *devname, int verbose, | |
1255 | int uuid_set, char *homehost) | |
1256 | { | |
1257 | /* For 'assemble' and 'force' we need to return non-zero if any | |
1258 | * change was made. For others, the return value is ignored. | |
1259 | * Update options are: | |
1260 | * force-one : This device looks a bit old but needs to be included, | |
1261 | * update age info appropriately. | |
1262 | * assemble: clear any 'faulty' flag to allow this device to | |
1263 | * be assembled. | |
1264 | * force-array: Array is degraded but being forced, mark it clean | |
1265 | * if that will be needed to assemble it. | |
1266 | * | |
1267 | * newdev: not used ???? | |
1268 | * grow: Array has gained a new device - this is currently for | |
1269 | * linear only | |
1270 | * resync: mark as dirty so a resync will happen. | |
1271 | * uuid: Change the uuid of the array to match watch is given | |
1272 | * homehost: update the recorded homehost | |
1273 | * name: update the name - preserving the homehost | |
1274 | * _reshape_progress: record new reshape_progress position. | |
1275 | * | |
1276 | * Following are not relevant for this version: | |
1277 | * sparc2.2 : update from old dodgey metadata | |
1278 | * super-minor: change the preferred_minor number | |
1279 | * summaries: update redundant counters. | |
1280 | */ | |
1281 | int rv = 0; | |
1282 | // struct ddf_super *ddf = st->sb; | |
1283 | // struct vd_config *vd = find_vdcr(ddf); | |
1284 | // struct virtual_entry *ve = find_ve(ddf); | |
1285 | ||
1286 | ||
1287 | /* we don't need to handle "force-*" or "assemble" as | |
1288 | * there is no need to 'trick' the kernel. We the metadata is | |
1289 | * first updated to activate the array, all the implied modifications | |
1290 | * will just happen. | |
1291 | */ | |
1292 | ||
1293 | if (strcmp(update, "grow") == 0) { | |
1294 | /* FIXME */ | |
1295 | } | |
1296 | if (strcmp(update, "resync") == 0) { | |
1297 | // info->resync_checkpoint = 0; | |
1298 | } | |
1299 | /* We ignore UUID updates as they make even less sense | |
1300 | * with DDF | |
1301 | */ | |
1302 | if (strcmp(update, "homehost") == 0) { | |
1303 | /* homehost is stored in controller->vendor_data, | |
1304 | * or it is when we are the vendor | |
1305 | */ | |
1306 | // if (info->vendor_is_local) | |
1307 | // strcpy(ddf->controller.vendor_data, homehost); | |
1308 | } | |
1309 | if (strcmp(update, "name") == 0) { | |
1310 | /* name is stored in virtual_entry->name */ | |
1311 | // memset(ve->name, ' ', 16); | |
1312 | // strncpy(ve->name, info->name, 16); | |
1313 | } | |
1314 | if (strcmp(update, "_reshape_progress") == 0) { | |
1315 | /* We don't support reshape yet */ | |
1316 | } | |
1317 | ||
1318 | // update_all_csum(ddf); | |
1319 | ||
1320 | return rv; | |
1321 | } | |
1322 | ||
5f8097be NB |
1323 | static void make_header_guid(char *guid) |
1324 | { | |
1325 | __u32 stamp; | |
1326 | int rfd; | |
1327 | /* Create a DDF Header of Virtual Disk GUID */ | |
1328 | ||
1329 | /* 24 bytes of fiction required. | |
1330 | * first 8 are a 'vendor-id' - "Linux-MD" | |
1331 | * next 8 are controller type.. how about 0X DEAD BEEF 0000 0000 | |
1332 | * Remaining 8 random number plus timestamp | |
1333 | */ | |
1334 | memcpy(guid, T10, sizeof(T10)); | |
1335 | stamp = __cpu_to_be32(0xdeadbeef); | |
1336 | memcpy(guid+8, &stamp, 4); | |
1337 | stamp = __cpu_to_be32(0); | |
1338 | memcpy(guid+12, &stamp, 4); | |
1339 | stamp = __cpu_to_be32(time(0) - DECADE); | |
1340 | memcpy(guid+16, &stamp, 4); | |
1341 | rfd = open("/dev/urandom", O_RDONLY); | |
1342 | if (rfd < 0 || read(rfd, &stamp, 4) != 4) | |
1343 | stamp = random(); | |
1344 | memcpy(guid+20, &stamp, 4); | |
1345 | if (rfd >= 0) close(rfd); | |
1346 | } | |
a322f70c DW |
1347 | static int init_super_ddf(struct supertype *st, |
1348 | mdu_array_info_t *info, | |
1349 | unsigned long long size, char *name, char *homehost, | |
1350 | int *uuid) | |
1351 | { | |
1352 | /* This is primarily called by Create when creating a new array. | |
1353 | * We will then get add_to_super called for each component, and then | |
1354 | * write_init_super called to write it out to each device. | |
1355 | * For DDF, Create can create on fresh devices or on a pre-existing | |
1356 | * array. | |
1357 | * To create on a pre-existing array a different method will be called. | |
1358 | * This one is just for fresh drives. | |
1359 | * | |
1360 | * We need to create the entire 'ddf' structure which includes: | |
1361 | * DDF headers - these are easy. | |
1362 | * Controller data - a Sector describing this controller .. not that | |
1363 | * this is a controller exactly. | |
1364 | * Physical Disk Record - one entry per device, so | |
1365 | * leave plenty of space. | |
1366 | * Virtual Disk Records - again, just leave plenty of space. | |
1367 | * This just lists VDs, doesn't give details | |
1368 | * Config records - describes the VDs that use this disk | |
1369 | * DiskData - describes 'this' device. | |
1370 | * BadBlockManagement - empty | |
1371 | * Diag Space - empty | |
1372 | * Vendor Logs - Could we put bitmaps here? | |
1373 | * | |
1374 | */ | |
1375 | struct ddf_super *ddf; | |
1376 | char hostname[17]; | |
1377 | int hostlen; | |
a322f70c DW |
1378 | int max_phys_disks, max_virt_disks; |
1379 | unsigned long long sector; | |
1380 | int clen; | |
1381 | int i; | |
1382 | int pdsize, vdsize; | |
1383 | struct phys_disk *pd; | |
1384 | struct virtual_disk *vd; | |
1385 | ||
1386 | ddf = malloc(sizeof(*ddf)); | |
1387 | ddf->dlist = NULL; /* no physical disks yet */ | |
1388 | ddf->conflist = NULL; /* No virtual disks yet */ | |
1389 | ||
1390 | /* At least 32MB *must* be reserved for the ddf. So let's just | |
1391 | * start 32MB from the end, and put the primary header there. | |
1392 | * Don't do secondary for now. | |
1393 | * We don't know exactly where that will be yet as it could be | |
1394 | * different on each device. To just set up the lengths. | |
1395 | * | |
1396 | */ | |
1397 | ||
1398 | ddf->anchor.magic = DDF_HEADER_MAGIC; | |
5f8097be | 1399 | make_header_guid(ddf->anchor.guid); |
a322f70c DW |
1400 | |
1401 | memcpy(ddf->anchor.revision, DDF_REVISION, 8); | |
1402 | ddf->anchor.seq = __cpu_to_be32(1); | |
1403 | ddf->anchor.timestamp = __cpu_to_be32(time(0) - DECADE); | |
1404 | ddf->anchor.openflag = 0xFF; | |
1405 | ddf->anchor.foreignflag = 0; | |
1406 | ddf->anchor.enforcegroups = 0; /* Is this best?? */ | |
1407 | ddf->anchor.pad0 = 0xff; | |
1408 | memset(ddf->anchor.pad1, 0xff, 12); | |
1409 | memset(ddf->anchor.header_ext, 0xff, 32); | |
1410 | ddf->anchor.primary_lba = ~(__u64)0; | |
1411 | ddf->anchor.secondary_lba = ~(__u64)0; | |
1412 | ddf->anchor.type = DDF_HEADER_ANCHOR; | |
1413 | memset(ddf->anchor.pad2, 0xff, 3); | |
1414 | ddf->anchor.workspace_len = __cpu_to_be32(32768); /* Must be reserved */ | |
1415 | ddf->anchor.workspace_lba = ~(__u64)0; /* Put this at bottom | |
1416 | of 32M reserved.. */ | |
1417 | max_phys_disks = 1023; /* Should be enough */ | |
1418 | ddf->anchor.max_pd_entries = __cpu_to_be16(max_phys_disks); | |
1419 | max_virt_disks = 255; | |
1420 | ddf->anchor.max_vd_entries = __cpu_to_be16(max_virt_disks); /* ?? */ | |
1421 | ddf->anchor.max_partitions = __cpu_to_be16(64); /* ?? */ | |
1422 | ddf->max_part = 64; | |
1423 | ddf->anchor.config_record_len = __cpu_to_be16(1 + 256*12/512); | |
1424 | ddf->anchor.max_primary_element_entries = __cpu_to_be16(256); | |
1425 | memset(ddf->anchor.pad3, 0xff, 54); | |
1426 | ||
1427 | /* controller sections is one sector long immediately | |
1428 | * after the ddf header */ | |
1429 | sector = 1; | |
1430 | ddf->anchor.controller_section_offset = __cpu_to_be32(sector); | |
1431 | ddf->anchor.controller_section_length = __cpu_to_be32(1); | |
1432 | sector += 1; | |
1433 | ||
1434 | /* phys is 8 sectors after that */ | |
1435 | pdsize = ROUND_UP(sizeof(struct phys_disk) + | |
1436 | sizeof(struct phys_disk_entry)*max_phys_disks, | |
1437 | 512); | |
1438 | switch(pdsize/512) { | |
1439 | case 2: case 8: case 32: case 128: case 512: break; | |
1440 | default: abort(); | |
1441 | } | |
1442 | ddf->anchor.phys_section_offset = __cpu_to_be32(sector); | |
1443 | ddf->anchor.phys_section_length = | |
1444 | __cpu_to_be32(pdsize/512); /* max_primary_element_entries/8 */ | |
1445 | sector += pdsize/512; | |
1446 | ||
1447 | /* virt is another 32 sectors */ | |
1448 | vdsize = ROUND_UP(sizeof(struct virtual_disk) + | |
1449 | sizeof(struct virtual_entry) * max_virt_disks, | |
1450 | 512); | |
1451 | switch(vdsize/512) { | |
1452 | case 2: case 8: case 32: case 128: case 512: break; | |
1453 | default: abort(); | |
1454 | } | |
1455 | ddf->anchor.virt_section_offset = __cpu_to_be32(sector); | |
1456 | ddf->anchor.virt_section_length = | |
1457 | __cpu_to_be32(vdsize/512); /* max_vd_entries/8 */ | |
1458 | sector += vdsize/512; | |
1459 | ||
1460 | clen = (1 + 256*12/512) * (64+1); | |
1461 | ddf->anchor.config_section_offset = __cpu_to_be32(sector); | |
1462 | ddf->anchor.config_section_length = __cpu_to_be32(clen); | |
1463 | sector += clen; | |
1464 | ||
1465 | ddf->anchor.data_section_offset = __cpu_to_be32(sector); | |
1466 | ddf->anchor.data_section_length = __cpu_to_be32(1); | |
1467 | sector += 1; | |
1468 | ||
1469 | ddf->anchor.bbm_section_length = __cpu_to_be32(0); | |
1470 | ddf->anchor.bbm_section_offset = __cpu_to_be32(0xFFFFFFFF); | |
1471 | ddf->anchor.diag_space_length = __cpu_to_be32(0); | |
1472 | ddf->anchor.diag_space_offset = __cpu_to_be32(0xFFFFFFFF); | |
1473 | ddf->anchor.vendor_length = __cpu_to_be32(0); | |
1474 | ddf->anchor.vendor_offset = __cpu_to_be32(0xFFFFFFFF); | |
1475 | ||
1476 | memset(ddf->anchor.pad4, 0xff, 256); | |
1477 | ||
1478 | memcpy(&ddf->primary, &ddf->anchor, 512); | |
1479 | memcpy(&ddf->secondary, &ddf->anchor, 512); | |
1480 | ||
1481 | ddf->primary.openflag = 1; /* I guess.. */ | |
1482 | ddf->primary.type = DDF_HEADER_PRIMARY; | |
1483 | ||
1484 | ddf->secondary.openflag = 1; /* I guess.. */ | |
1485 | ddf->secondary.type = DDF_HEADER_SECONDARY; | |
1486 | ||
1487 | ddf->active = &ddf->primary; | |
1488 | ||
1489 | ddf->controller.magic = DDF_CONTROLLER_MAGIC; | |
1490 | ||
1491 | /* 24 more bytes of fiction required. | |
1492 | * first 8 are a 'vendor-id' - "Linux-MD" | |
1493 | * Remaining 16 are serial number.... maybe a hostname would do? | |
1494 | */ | |
1495 | memcpy(ddf->controller.guid, T10, sizeof(T10)); | |
1496 | gethostname(hostname, 17); | |
1497 | hostname[17] = 0; | |
1498 | hostlen = strlen(hostname); | |
1499 | memcpy(ddf->controller.guid + 24 - hostlen, hostname, hostlen); | |
1500 | for (i = strlen(T10) ; i+hostlen < 24; i++) | |
1501 | ddf->controller.guid[i] = ' '; | |
1502 | ||
1503 | ddf->controller.type.vendor_id = __cpu_to_be16(0xDEAD); | |
1504 | ddf->controller.type.device_id = __cpu_to_be16(0xBEEF); | |
1505 | ddf->controller.type.sub_vendor_id = 0; | |
1506 | ddf->controller.type.sub_device_id = 0; | |
1507 | memcpy(ddf->controller.product_id, "What Is My PID??", 16); | |
1508 | memset(ddf->controller.pad, 0xff, 8); | |
1509 | memset(ddf->controller.vendor_data, 0xff, 448); | |
1510 | ||
1511 | pd = ddf->phys = malloc(pdsize); | |
1512 | ddf->pdsize = pdsize; | |
1513 | ||
1514 | memset(pd, 0xff, pdsize); | |
1515 | memset(pd, 0, sizeof(*pd)); | |
1516 | pd->magic = DDF_PHYS_DATA_MAGIC; | |
1517 | pd->used_pdes = __cpu_to_be16(0); | |
1518 | pd->max_pdes = __cpu_to_be16(max_phys_disks); | |
1519 | memset(pd->pad, 0xff, 52); | |
1520 | ||
1521 | vd = ddf->virt = malloc(vdsize); | |
1522 | ddf->vdsize = vdsize; | |
1523 | memset(vd, 0, vdsize); | |
1524 | vd->magic = DDF_VIRT_RECORDS_MAGIC; | |
1525 | vd->populated_vdes = __cpu_to_be16(0); | |
1526 | vd->max_vdes = __cpu_to_be16(max_virt_disks); | |
1527 | memset(vd->pad, 0xff, 52); | |
1528 | ||
5f8097be NB |
1529 | for (i=0; i<max_virt_disks; i++) |
1530 | memset(&vd->entries[i], 0xff, sizeof(struct virtual_entry)); | |
1531 | ||
a322f70c DW |
1532 | st->sb = ddf; |
1533 | return 1; | |
1534 | } | |
1535 | ||
5f8097be NB |
1536 | static int all_ff(char *guid) |
1537 | { | |
1538 | int i; | |
1539 | for (i = 0; i < DDF_GUID_LEN; i++) | |
1540 | if (guid[i] != (char)0xff) | |
1541 | return 0; | |
1542 | return 1; | |
1543 | } | |
1544 | static int chunk_to_shift(int chunksize) | |
1545 | { | |
1546 | return ffs(chunksize/512)-1; | |
1547 | } | |
1548 | ||
1549 | static int level_to_prl(int level) | |
1550 | { | |
1551 | switch (level) { | |
1552 | case LEVEL_LINEAR: return DDF_CONCAT; | |
1553 | case 0: return DDF_RAID0; | |
1554 | case 1: return DDF_RAID1; | |
1555 | case 4: return DDF_RAID4; | |
1556 | case 5: return DDF_RAID5; | |
1557 | case 6: return DDF_RAID6; | |
1558 | default: return -1; | |
1559 | } | |
1560 | } | |
1561 | static int layout_to_rlq(int level, int layout, int raiddisks) | |
1562 | { | |
1563 | switch(level) { | |
1564 | case 0: | |
1565 | return DDF_RAID0_SIMPLE; | |
1566 | case 1: | |
1567 | switch(raiddisks) { | |
1568 | case 2: return DDF_RAID1_SIMPLE; | |
1569 | case 3: return DDF_RAID1_MULTI; | |
1570 | default: return -1; | |
1571 | } | |
1572 | case 4: | |
1573 | switch(layout) { | |
1574 | case 0: return DDF_RAID4_N; | |
1575 | } | |
1576 | break; | |
1577 | case 5: | |
1578 | case 6: | |
1579 | switch(layout) { | |
1580 | case ALGORITHM_LEFT_ASYMMETRIC: | |
1581 | return DDF_RAID5_N_RESTART; | |
1582 | case ALGORITHM_RIGHT_ASYMMETRIC: | |
1583 | return DDF_RAID5_0_RESTART; | |
1584 | case ALGORITHM_LEFT_SYMMETRIC: | |
1585 | return DDF_RAID5_N_CONTINUE; | |
1586 | case ALGORITHM_RIGHT_SYMMETRIC: | |
1587 | return -1; /* not mentioned in standard */ | |
1588 | } | |
1589 | } | |
1590 | return -1; | |
1591 | } | |
1592 | ||
598f0d58 NB |
1593 | static int rlq_to_layout(int rlq, int prl, int raiddisks) |
1594 | { | |
1595 | switch(prl) { | |
1596 | case DDF_RAID0: | |
1597 | return 0; /* hopefully rlq == DDF_RAID0_SIMPLE */ | |
1598 | case DDF_RAID1: | |
1599 | return 0; /* hopefully rlq == SIMPLE or MULTI depending | |
1600 | on raiddisks*/ | |
1601 | case DDF_RAID4: | |
1602 | switch(rlq) { | |
1603 | case DDF_RAID4_N: | |
1604 | return 0; | |
1605 | default: | |
1606 | /* not supported */ | |
1607 | return -1; /* FIXME this isn't checked */ | |
1608 | } | |
1609 | case DDF_RAID5: | |
1610 | case DDF_RAID6: | |
1611 | switch(rlq) { | |
1612 | case DDF_RAID5_N_RESTART: | |
1613 | return ALGORITHM_LEFT_ASYMMETRIC; | |
1614 | case DDF_RAID5_0_RESTART: | |
1615 | return ALGORITHM_RIGHT_ASYMMETRIC; | |
1616 | case DDF_RAID5_N_CONTINUE: | |
1617 | return ALGORITHM_LEFT_SYMMETRIC; | |
1618 | default: | |
1619 | return -1; | |
1620 | } | |
1621 | } | |
1622 | return -1; | |
1623 | } | |
1624 | ||
5f8097be NB |
1625 | static int init_super_ddf_bvd(struct supertype *st, |
1626 | mdu_array_info_t *info, | |
1627 | unsigned long long size, | |
1628 | char *name, char *homehost, | |
1629 | int *uuid) | |
1630 | { | |
1631 | /* We are creating a BVD inside a pre-existing container. | |
1632 | * so st->sb is already set. | |
1633 | * We need to create a new vd_config and a new virtual_entry | |
1634 | */ | |
1635 | struct ddf_super *ddf = st->sb; | |
1636 | int venum; | |
1637 | struct virtual_entry *ve; | |
1638 | struct vcl *vcl; | |
1639 | struct vd_config *vc; | |
1640 | int mppe; | |
1641 | int conflen; | |
1642 | ||
1643 | if (__be16_to_cpu(ddf->virt->populated_vdes) | |
1644 | >= __be16_to_cpu(ddf->virt->max_vdes)) { | |
1645 | fprintf(stderr, Name": This ddf already has the " | |
1646 | "maximum of %d virtual devices\n", | |
1647 | __be16_to_cpu(ddf->virt->max_vdes)); | |
1648 | return 0; | |
1649 | } | |
1650 | ||
1651 | for (venum = 0; venum < __be16_to_cpu(ddf->virt->max_vdes); venum++) | |
1652 | if (all_ff(ddf->virt->entries[venum].guid)) | |
1653 | break; | |
1654 | if (venum == __be16_to_cpu(ddf->virt->max_vdes)) { | |
1655 | fprintf(stderr, Name ": Cannot find spare slot for " | |
1656 | "virtual disk - DDF is corrupt\n"); | |
1657 | return 0; | |
1658 | } | |
1659 | ve = &ddf->virt->entries[venum]; | |
2f6079dc | 1660 | st->container_member = venum; |
5f8097be NB |
1661 | |
1662 | /* A Virtual Disk GUID contains the T10 Vendor ID, controller type, | |
1663 | * timestamp, random number | |
1664 | */ | |
1665 | make_header_guid(ve->guid); | |
1666 | ve->unit = __cpu_to_be16(info->md_minor); | |
1667 | ve->pad0 = 0xFFFF; | |
1668 | ve->guid_crc = crc32(0, (unsigned char*)ddf->anchor.guid, DDF_GUID_LEN); | |
1669 | ve->type = 0; | |
1670 | ve->state = 0; | |
1671 | ve->init_state = 0; | |
1672 | if (!(info->state & 1)) | |
1673 | ve->init_state = DDF_state_inconsistent; | |
1674 | memset(ve->pad1, 0xff, 14); | |
1675 | memset(ve->name, ' ', 16); | |
1676 | if (name) | |
1677 | strncpy(ve->name, name, 16); | |
1678 | ddf->virt->populated_vdes = | |
1679 | __cpu_to_be16(__be16_to_cpu(ddf->virt->populated_vdes)+1); | |
1680 | ||
1681 | /* Now create a new vd_config */ | |
1682 | conflen = __be16_to_cpu(ddf->active->config_record_len); | |
1683 | vcl = malloc(offsetof(struct vcl, conf) + conflen * 512); | |
598f0d58 NB |
1684 | mppe = __be16_to_cpu(ddf->anchor.max_primary_element_entries); |
1685 | vcl->lba_offset = (__u64*) &vcl->conf.phys_refnum[mppe]; | |
5f8097be NB |
1686 | |
1687 | vc = &vcl->conf; | |
1688 | ||
1689 | vc->magic = DDF_VD_CONF_MAGIC; | |
1690 | memcpy(vc->guid, ve->guid, DDF_GUID_LEN); | |
1691 | vc->timestamp = __cpu_to_be32(time(0)-DECADE); | |
1692 | vc->seqnum = __cpu_to_be32(1); | |
1693 | memset(vc->pad0, 0xff, 24); | |
1694 | vc->prim_elmnt_count = __cpu_to_be16(info->raid_disks); | |
1695 | vc->chunk_shift = chunk_to_shift(info->chunk_size); | |
1696 | vc->prl = level_to_prl(info->level); | |
1697 | vc->rlq = layout_to_rlq(info->level, info->layout, info->raid_disks); | |
1698 | vc->sec_elmnt_count = 1; | |
1699 | vc->sec_elmnt_seq = 0; | |
1700 | vc->srl = 0; | |
1701 | vc->blocks = __cpu_to_be64(info->size * 2); | |
1702 | vc->array_blocks = __cpu_to_be64( | |
1703 | calc_array_size(info->level, info->raid_disks, info->layout, | |
1704 | info->chunk_size, info->size*2)); | |
1705 | memset(vc->pad1, 0xff, 8); | |
1706 | vc->spare_refs[0] = 0xffffffff; | |
1707 | vc->spare_refs[1] = 0xffffffff; | |
1708 | vc->spare_refs[2] = 0xffffffff; | |
1709 | vc->spare_refs[3] = 0xffffffff; | |
1710 | vc->spare_refs[4] = 0xffffffff; | |
1711 | vc->spare_refs[5] = 0xffffffff; | |
1712 | vc->spare_refs[6] = 0xffffffff; | |
1713 | vc->spare_refs[7] = 0xffffffff; | |
1714 | memset(vc->cache_pol, 0, 8); | |
1715 | vc->bg_rate = 0x80; | |
1716 | memset(vc->pad2, 0xff, 3); | |
1717 | memset(vc->pad3, 0xff, 52); | |
1718 | memset(vc->pad4, 0xff, 192); | |
1719 | memset(vc->v0, 0xff, 32); | |
1720 | memset(vc->v1, 0xff, 32); | |
1721 | memset(vc->v2, 0xff, 16); | |
1722 | memset(vc->v3, 0xff, 16); | |
1723 | memset(vc->vendor, 0xff, 32); | |
598f0d58 | 1724 | |
5f8097be NB |
1725 | memset(vc->phys_refnum, 0xff, 4*mppe); |
1726 | memset(vc->phys_refnum+mppe, 0x00, 8*mppe); | |
1727 | ||
1728 | vcl->next = ddf->conflist; | |
1729 | ddf->conflist = vcl; | |
1730 | ddf->newconf = vcl; | |
1731 | return 1; | |
1732 | } | |
1733 | ||
1734 | static void add_to_super_ddf_bvd(struct supertype *st, | |
1735 | mdu_disk_info_t *dk, int fd, char *devname) | |
1736 | { | |
1737 | /* fd and devname identify a device with-in the ddf container (st). | |
1738 | * dk identifies a location in the new BVD. | |
1739 | * We need to find suitable free space in that device and update | |
1740 | * the phys_refnum and lba_offset for the newly created vd_config. | |
1741 | * We might also want to update the type in the phys_disk | |
1742 | * section. FIXME | |
1743 | */ | |
1744 | struct dl *dl; | |
1745 | struct ddf_super *ddf = st->sb; | |
1746 | struct vd_config *vc; | |
1747 | __u64 *lba_offset; | |
1748 | int mppe; | |
1749 | ||
1750 | for (dl = ddf->dlist; dl ; dl = dl->next) | |
1751 | if (dl->major == dk->major && | |
1752 | dl->minor == dk->minor) | |
1753 | break; | |
1754 | if (!dl || ! (dk->state & (1<<MD_DISK_SYNC))) | |
1755 | return; | |
1756 | ||
1757 | vc = &ddf->newconf->conf; | |
1758 | vc->phys_refnum[dk->raid_disk] = dl->disk.refnum; | |
1759 | mppe = __be16_to_cpu(ddf->anchor.max_primary_element_entries); | |
1760 | lba_offset = (__u64*)(vc->phys_refnum + mppe); | |
1761 | lba_offset[dk->raid_disk] = 0; /* FIXME */ | |
1762 | ||
1763 | dl->vlist[0] =ddf->newconf; /* FIXME */ | |
1764 | ||
1765 | dl->fd = fd; | |
1766 | dl->devname = devname; | |
1767 | } | |
1768 | ||
a322f70c DW |
1769 | /* add a device to a container, either while creating it or while |
1770 | * expanding a pre-existing container | |
1771 | */ | |
1772 | static void add_to_super_ddf(struct supertype *st, | |
1773 | mdu_disk_info_t *dk, int fd, char *devname) | |
1774 | { | |
1775 | struct ddf_super *ddf = st->sb; | |
1776 | struct dl *dd; | |
1777 | time_t now; | |
1778 | struct tm *tm; | |
1779 | unsigned long long size; | |
1780 | struct phys_disk_entry *pde; | |
1781 | int n, i; | |
1782 | struct stat stb; | |
1783 | ||
1784 | /* This is device numbered dk->number. We need to create | |
1785 | * a phys_disk entry and a more detailed disk_data entry. | |
1786 | */ | |
1787 | fstat(fd, &stb); | |
1788 | dd = malloc(sizeof(*dd) + sizeof(dd->vlist[0]) * (ddf->max_part+1)); | |
1789 | dd->major = major(stb.st_rdev); | |
1790 | dd->minor = minor(stb.st_rdev); | |
1791 | dd->devname = devname; | |
1792 | dd->next = ddf->dlist; | |
1793 | dd->fd = fd; | |
1794 | ||
1795 | dd->disk.magic = DDF_PHYS_DATA_MAGIC; | |
1796 | now = time(0); | |
1797 | tm = localtime(&now); | |
1798 | sprintf(dd->disk.guid, "%8s%04d%02d%02d", | |
1799 | T10, tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday); | |
1800 | *(__u32*)(dd->disk.guid + 16) = random(); | |
1801 | *(__u32*)(dd->disk.guid + 20) = random(); | |
1802 | ||
5f8097be | 1803 | dd->disk.refnum = random(); /* and hope for the best FIXME check this is unique!!*/ |
a322f70c DW |
1804 | dd->disk.forced_ref = 1; |
1805 | dd->disk.forced_guid = 1; | |
1806 | memset(dd->disk.vendor, ' ', 32); | |
1807 | memcpy(dd->disk.vendor, "Linux", 5); | |
1808 | memset(dd->disk.pad, 0xff, 442); | |
1809 | for (i = 0; i < ddf->max_part+1 ; i++) | |
1810 | dd->vlist[i] = NULL; | |
1811 | ||
1812 | n = __be16_to_cpu(ddf->phys->used_pdes); | |
1813 | pde = &ddf->phys->entries[n]; | |
1814 | n++; | |
1815 | ddf->phys->used_pdes = __cpu_to_be16(n); | |
1816 | ||
1817 | memcpy(pde->guid, dd->disk.guid, DDF_GUID_LEN); | |
1818 | pde->refnum = dd->disk.refnum; | |
1819 | pde->type = __cpu_to_be16(DDF_Forced_PD_GUID |DDF_Global_Spare); | |
1820 | pde->state = __cpu_to_be16(DDF_Online); | |
1821 | get_dev_size(fd, NULL, &size); | |
1822 | /* We are required to reserve 32Meg, and record the size in sectors */ | |
1823 | pde->config_size = __cpu_to_be64( (size - 32*1024*1024) / 512); | |
1824 | sprintf(pde->path, "%17.17s","Information: nil") ; | |
1825 | memset(pde->pad, 0xff, 6); | |
1826 | ||
1827 | ddf->dlist = dd; | |
1828 | } | |
1829 | ||
1830 | /* | |
1831 | * This is the write_init_super method for a ddf container. It is | |
1832 | * called when creating a container or adding another device to a | |
1833 | * container. | |
1834 | */ | |
1835 | ||
1836 | #ifndef MDASSEMBLE | |
1837 | static int write_init_super_ddf(struct supertype *st) | |
1838 | { | |
1839 | ||
1840 | struct ddf_super *ddf = st->sb; | |
1841 | int i; | |
1842 | struct dl *d; | |
1843 | int n_config; | |
1844 | int conf_size; | |
1845 | ||
1846 | unsigned long long size, sector; | |
1847 | ||
1848 | for (d = ddf->dlist; d; d=d->next) { | |
1849 | int fd = d->fd; | |
1850 | ||
1851 | if (fd < 0) | |
1852 | continue; | |
1853 | ||
1854 | /* We need to fill in the primary, (secondary) and workspace | |
1855 | * lba's in the headers, set their checksums, | |
1856 | * Also checksum phys, virt.... | |
1857 | * | |
1858 | * Then write everything out, finally the anchor is written. | |
1859 | */ | |
1860 | get_dev_size(fd, NULL, &size); | |
1861 | size /= 512; | |
1862 | ddf->anchor.workspace_lba = __cpu_to_be64(size - 32*1024*2); | |
1863 | ddf->anchor.primary_lba = __cpu_to_be64(size - 16*1024*2); | |
1864 | ddf->anchor.seq = __cpu_to_be32(1); | |
1865 | memcpy(&ddf->primary, &ddf->anchor, 512); | |
1866 | memcpy(&ddf->secondary, &ddf->anchor, 512); | |
1867 | ||
1868 | ddf->anchor.openflag = 0xFF; /* 'open' means nothing */ | |
1869 | ddf->anchor.seq = 0xFFFFFFFF; /* no sequencing in anchor */ | |
1870 | ddf->anchor.crc = calc_crc(&ddf->anchor, 512); | |
1871 | ||
1872 | ddf->primary.openflag = 0; | |
1873 | ddf->primary.type = DDF_HEADER_PRIMARY; | |
1874 | ||
1875 | ddf->secondary.openflag = 0; | |
1876 | ddf->secondary.type = DDF_HEADER_SECONDARY; | |
1877 | ||
1878 | ddf->primary.crc = calc_crc(&ddf->primary, 512); | |
1879 | ddf->secondary.crc = calc_crc(&ddf->secondary, 512); | |
1880 | ||
1881 | sector = size - 16*1024*2; | |
1882 | lseek64(fd, sector<<9, 0); | |
1883 | write(fd, &ddf->primary, 512); | |
1884 | ||
1885 | ddf->controller.crc = calc_crc(&ddf->controller, 512); | |
1886 | write(fd, &ddf->controller, 512); | |
1887 | ||
1888 | ddf->phys->crc = calc_crc(ddf->phys, ddf->pdsize); | |
1889 | ||
1890 | write(fd, ddf->phys, ddf->pdsize); | |
1891 | ||
1892 | ddf->virt->crc = calc_crc(ddf->virt, ddf->vdsize); | |
1893 | write(fd, ddf->virt, ddf->vdsize); | |
1894 | ||
1895 | /* Now write lots of config records. */ | |
1896 | n_config = __be16_to_cpu(ddf->active->max_partitions); | |
1897 | conf_size = __be16_to_cpu(ddf->active->config_record_len) * 512; | |
1898 | for (i = 0 ; i <= n_config ; i++) { | |
1899 | struct vcl *c = d->vlist[i]; | |
1900 | ||
1901 | if (c) { | |
1902 | c->conf.crc = calc_crc(&c->conf, conf_size); | |
1903 | write(fd, &c->conf, conf_size); | |
1904 | } else { | |
1905 | __u32 sig = 0xffffffff; | |
1906 | write(fd, &sig, 4); | |
1907 | lseek64(fd, conf_size-4, SEEK_CUR); | |
1908 | } | |
1909 | } | |
1910 | d->disk.crc = calc_crc(&d->disk, 512); | |
1911 | write(fd, &d->disk, 512); | |
1912 | ||
1913 | /* Maybe do the same for secondary */ | |
1914 | ||
1915 | lseek64(fd, (size-1)*512, SEEK_SET); | |
1916 | write(fd, &ddf->anchor, 512); | |
1917 | close(fd); | |
1918 | } | |
1919 | return 1; | |
1920 | } | |
1921 | #endif | |
1922 | ||
1923 | static __u64 avail_size_ddf(struct supertype *st, __u64 devsize) | |
1924 | { | |
1925 | /* We must reserve the last 32Meg */ | |
1926 | if (devsize <= 32*1024*2) | |
1927 | return 0; | |
1928 | return devsize - 32*1024*2; | |
1929 | } | |
1930 | ||
1931 | #ifndef MDASSEMBLE | |
1932 | int validate_geometry_ddf(struct supertype *st, | |
1933 | int level, int layout, int raiddisks, | |
1934 | int chunk, unsigned long long size, | |
1935 | char *dev, unsigned long long *freesize) | |
1936 | { | |
1937 | int fd; | |
1938 | struct mdinfo *sra; | |
1939 | int cfd; | |
1940 | ||
1941 | /* ddf potentially supports lots of things, but it depends on | |
1942 | * what devices are offered (and maybe kernel version?) | |
1943 | * If given unused devices, we will make a container. | |
1944 | * If given devices in a container, we will make a BVD. | |
1945 | * If given BVDs, we make an SVD, changing all the GUIDs in the process. | |
1946 | */ | |
1947 | ||
1948 | if (level == LEVEL_CONTAINER) { | |
1949 | st->ss = &super_ddf_container; | |
5f8097be NB |
1950 | if (dev) { |
1951 | int rv =st->ss->validate_geometry(st, level, layout, | |
1952 | raiddisks, chunk, | |
1953 | size, | |
1954 | NULL, freesize); | |
1955 | if (rv) | |
1956 | return rv; | |
1957 | } | |
1958 | return st->ss->validate_geometry(st, level, layout, raiddisks, | |
1959 | chunk, size, dev, freesize); | |
1960 | } | |
1961 | ||
1962 | if (st->sb) { | |
1963 | /* creating in a given container */ | |
1964 | st->ss = &super_ddf_bvd; | |
1965 | if (dev) { | |
1966 | int rv =st->ss->validate_geometry(st, level, layout, | |
1967 | raiddisks, chunk, | |
1968 | size, | |
1969 | NULL, freesize); | |
1970 | if (rv) | |
1971 | return rv; | |
1972 | } | |
a322f70c DW |
1973 | return st->ss->validate_geometry(st, level, layout, raiddisks, |
1974 | chunk, size, dev, freesize); | |
1975 | } | |
5f8097be NB |
1976 | /* FIXME should exclude MULTIPATH, or more appropriately, allow |
1977 | * only known levels. | |
1978 | */ | |
a322f70c DW |
1979 | if (!dev) |
1980 | return 1; | |
1981 | ||
1982 | /* This device needs to be either a device in a 'ddf' container, | |
5f8097be | 1983 | * or it needs to be a 'ddf-bvd' array. |
a322f70c DW |
1984 | */ |
1985 | ||
1986 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
1987 | if (fd >= 0) { | |
1988 | sra = sysfs_read(fd, 0, GET_VERSION); | |
1989 | close(fd); | |
1990 | if (sra && sra->array.major_version == -1 && | |
1991 | strcmp(sra->text_version, "ddf-bvd") == 0) { | |
1992 | st->ss = &super_ddf_svd; | |
1993 | return st->ss->validate_geometry(st, level, layout, | |
1994 | raiddisks, chunk, size, | |
1995 | dev, freesize); | |
1996 | } | |
1997 | ||
1998 | fprintf(stderr, | |
1999 | Name ": Cannot create this array on device %s\n", | |
2000 | dev); | |
2001 | return 0; | |
2002 | } | |
2003 | if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) { | |
2004 | fprintf(stderr, Name ": Cannot open %s: %s\n", | |
2005 | dev, strerror(errno)); | |
2006 | return 0; | |
2007 | } | |
2008 | /* Well, it is in use by someone, maybe a 'ddf' container. */ | |
2009 | cfd = open_container(fd); | |
2010 | if (cfd < 0) { | |
2011 | close(fd); | |
2012 | fprintf(stderr, Name ": Cannot use %s: It is busy\n", | |
2013 | dev); | |
2014 | return 0; | |
2015 | } | |
2016 | sra = sysfs_read(cfd, 0, GET_VERSION); | |
2017 | close(fd); | |
2018 | if (sra && sra->array.major_version == -1 && | |
2019 | strcmp(sra->text_version, "ddf") == 0) { | |
2020 | /* This is a member of a ddf container. Load the container | |
2021 | * and try to create a bvd | |
2022 | */ | |
2023 | struct ddf_super *ddf; | |
2024 | st->ss = &super_ddf_bvd; | |
2025 | if (load_super_ddf_all(st, cfd, (void **)&ddf, NULL, 1) == 0) { | |
5f8097be | 2026 | st->sb = ddf; |
2f6079dc NB |
2027 | st->container_dev = fd2devnum(cfd); |
2028 | st->container_member = 27; // FIXME | |
a322f70c DW |
2029 | close(cfd); |
2030 | return st->ss->validate_geometry(st, level, layout, | |
2031 | raiddisks, chunk, size, | |
2032 | dev, freesize); | |
2033 | } | |
2034 | close(cfd); | |
2035 | } | |
2036 | fprintf(stderr, Name ": Cannot use %s: Already in use\n", | |
2037 | dev); | |
2038 | return 1; | |
2039 | } | |
2040 | ||
2041 | int validate_geometry_ddf_container(struct supertype *st, | |
2042 | int level, int layout, int raiddisks, | |
2043 | int chunk, unsigned long long size, | |
2044 | char *dev, unsigned long long *freesize) | |
2045 | { | |
2046 | int fd; | |
2047 | unsigned long long ldsize; | |
2048 | ||
2049 | if (level != LEVEL_CONTAINER) | |
2050 | return 0; | |
2051 | if (!dev) | |
2052 | return 1; | |
2053 | ||
2054 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
2055 | if (fd < 0) { | |
2056 | fprintf(stderr, Name ": Cannot open %s: %s\n", | |
2057 | dev, strerror(errno)); | |
2058 | return 0; | |
2059 | } | |
2060 | if (!get_dev_size(fd, dev, &ldsize)) { | |
2061 | close(fd); | |
2062 | return 0; | |
2063 | } | |
2064 | close(fd); | |
2065 | ||
2066 | *freesize = avail_size_ddf(st, ldsize); | |
2067 | ||
2068 | return 1; | |
2069 | } | |
2070 | ||
5f8097be NB |
2071 | struct extent { |
2072 | unsigned long long start, size; | |
2073 | }; | |
2074 | int cmp_extent(const void *av, const void *bv) | |
2075 | { | |
2076 | const struct extent *a = av; | |
2077 | const struct extent *b = bv; | |
2078 | if (a->start < b->start) | |
2079 | return -1; | |
2080 | if (a->start > b->start) | |
2081 | return 1; | |
2082 | return 0; | |
2083 | } | |
2084 | ||
2085 | struct extent *get_extents(struct ddf_super *ddf, struct dl *dl) | |
2086 | { | |
2087 | /* find a list of used extents on the give physical device | |
2088 | * (dnum) or the given ddf. | |
2089 | * Return a malloced array of 'struct extent' | |
2090 | ||
2091 | FIXME ignore DDF_Legacy devices? | |
2092 | ||
2093 | */ | |
2094 | struct extent *rv; | |
2095 | int n = 0; | |
2096 | int dnum; | |
2097 | int i, j; | |
2098 | ||
2099 | for (dnum = 0; dnum < ddf->phys->used_pdes; dnum++) | |
2100 | if (memcmp(dl->disk.guid, | |
2101 | ddf->phys->entries[dnum].guid, | |
2102 | DDF_GUID_LEN) == 0) | |
2103 | break; | |
2104 | ||
2105 | if (dnum == ddf->phys->used_pdes) | |
2106 | return NULL; | |
2107 | ||
2108 | rv = malloc(sizeof(struct extent) * (ddf->max_part + 2)); | |
2109 | if (!rv) | |
2110 | return NULL; | |
2111 | ||
2112 | for (i = 0; i < ddf->max_part+1; i++) { | |
2113 | struct vcl *v = dl->vlist[i]; | |
2114 | if (v == NULL) | |
2115 | continue; | |
2116 | for (j=0; j < v->conf.prim_elmnt_count; j++) | |
2117 | if (v->conf.phys_refnum[j] == dl->disk.refnum) { | |
2118 | /* This device plays role 'j' in 'v'. */ | |
2119 | rv[n].start = __be64_to_cpu(v->lba_offset[j]); | |
2120 | rv[n].size = __be64_to_cpu(v->conf.blocks); | |
2121 | n++; | |
2122 | break; | |
2123 | } | |
2124 | } | |
2125 | qsort(rv, n, sizeof(*rv), cmp_extent); | |
2126 | ||
2127 | rv[n].start = __be64_to_cpu(ddf->phys->entries[dnum].config_size); | |
2128 | rv[n].size = 0; | |
2129 | return rv; | |
2130 | } | |
2131 | ||
a322f70c DW |
2132 | int validate_geometry_ddf_bvd(struct supertype *st, |
2133 | int level, int layout, int raiddisks, | |
2134 | int chunk, unsigned long long size, | |
2135 | char *dev, unsigned long long *freesize) | |
2136 | { | |
2137 | struct stat stb; | |
2138 | struct ddf_super *ddf = st->sb; | |
2139 | struct dl *dl; | |
5f8097be NB |
2140 | unsigned long long pos = 0; |
2141 | unsigned long long maxsize; | |
2142 | struct extent *e; | |
2143 | int i; | |
a322f70c DW |
2144 | /* ddf/bvd supports lots of things, but not containers */ |
2145 | if (level == LEVEL_CONTAINER) | |
2146 | return 0; | |
2147 | /* We must have the container info already read in. */ | |
2148 | if (!ddf) | |
2149 | return 0; | |
2150 | ||
5f8097be NB |
2151 | if (!dev) { |
2152 | /* General test: make sure there is space for | |
2153 | * 'raiddisks' device extents of size 'size'. | |
2154 | */ | |
2155 | unsigned long long minsize = size; | |
2156 | int dcnt = 0; | |
2157 | if (minsize == 0) | |
2158 | minsize = 8; | |
2159 | for (dl = ddf->dlist; dl ; dl = dl->next) | |
2160 | { | |
2161 | int found = 0; | |
2162 | ||
2163 | i = 0; | |
2164 | e = get_extents(ddf, dl); | |
2165 | if (!e) continue; | |
2166 | do { | |
2167 | unsigned long long esize; | |
2168 | esize = e[i].start - pos; | |
2169 | if (esize >= minsize) | |
2170 | found = 1; | |
2171 | pos = e[i].start + e[i].size; | |
2172 | i++; | |
2173 | } while (e[i-1].size); | |
2174 | if (found) | |
2175 | dcnt++; | |
2176 | free(e); | |
2177 | } | |
2178 | if (dcnt < raiddisks) { | |
2179 | fprintf(stderr, Name ": Not enough devices with space " | |
2180 | "for this array (%d < %d)\n", | |
2181 | dcnt, raiddisks); | |
2182 | return 0; | |
2183 | } | |
2184 | return 1; | |
2185 | } | |
a322f70c DW |
2186 | /* This device must be a member of the set */ |
2187 | if (stat(dev, &stb) < 0) | |
2188 | return 0; | |
2189 | if ((S_IFMT & stb.st_mode) != S_IFBLK) | |
2190 | return 0; | |
2191 | for (dl = ddf->dlist ; dl ; dl = dl->next) { | |
2192 | if (dl->major == major(stb.st_rdev) && | |
2193 | dl->minor == minor(stb.st_rdev)) | |
2194 | break; | |
2195 | } | |
5f8097be NB |
2196 | if (!dl) { |
2197 | fprintf(stderr, Name ": %s is not in the same DDF set\n", | |
2198 | dev); | |
2199 | return 0; | |
2200 | } | |
2201 | e = get_extents(ddf, dl); | |
2202 | maxsize = 0; | |
2203 | i = 0; | |
2204 | if (e) do { | |
2205 | unsigned long long esize; | |
2206 | esize = e[i].start - pos; | |
2207 | if (esize >= maxsize) | |
2208 | maxsize = esize; | |
2209 | pos = e[i].start + e[i].size; | |
2210 | i++; | |
2211 | } while (e[i-1].size); | |
2212 | *freesize = maxsize; | |
a322f70c DW |
2213 | // FIXME here I am |
2214 | ||
2215 | return 1; | |
2216 | } | |
2217 | int validate_geometry_ddf_svd(struct supertype *st, | |
2218 | int level, int layout, int raiddisks, | |
2219 | int chunk, unsigned long long size, | |
2220 | char *dev, unsigned long long *freesize) | |
2221 | { | |
2222 | /* dd/svd only supports striped, mirrored, concat, spanned... */ | |
2223 | if (level != LEVEL_LINEAR && | |
2224 | level != 0 && | |
2225 | level != 1) | |
2226 | return 0; | |
2227 | return 1; | |
2228 | } | |
2229 | ||
2230 | ||
2231 | static int load_super_ddf_all(struct supertype *st, int fd, | |
2232 | void **sbp, char *devname, int keep_fd) | |
2233 | { | |
2234 | struct mdinfo *sra; | |
2235 | struct ddf_super *super; | |
2236 | struct mdinfo *sd, *best = NULL; | |
2237 | int bestseq = 0; | |
2238 | int seq; | |
2239 | char nm[20]; | |
2240 | int dfd; | |
2241 | ||
2242 | sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE); | |
2243 | if (!sra) | |
2244 | return 1; | |
2245 | if (sra->array.major_version != -1 || | |
2246 | sra->array.minor_version != -2 || | |
2247 | strcmp(sra->text_version, "ddf") != 0) | |
2248 | return 1; | |
2249 | ||
2250 | super = malloc(sizeof(*super)); | |
2251 | if (!super) | |
2252 | return 1; | |
2253 | ||
2254 | /* first, try each device, and choose the best ddf */ | |
2255 | for (sd = sra->devs ; sd ; sd = sd->next) { | |
2256 | int rv; | |
2257 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
2258 | dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY); | |
2259 | if (!dfd) | |
2260 | return 2; | |
2261 | rv = load_ddf_headers(dfd, super, NULL); | |
2262 | if (!keep_fd) close(dfd); | |
2263 | if (rv == 0) { | |
2264 | seq = __be32_to_cpu(super->active->seq); | |
2265 | if (super->active->openflag) | |
2266 | seq--; | |
2267 | if (!best || seq > bestseq) { | |
2268 | bestseq = seq; | |
2269 | best = sd; | |
2270 | } | |
2271 | } | |
2272 | } | |
2273 | if (!best) | |
2274 | return 1; | |
2275 | /* OK, load this ddf */ | |
2276 | sprintf(nm, "%d:%d", best->disk.major, best->disk.minor); | |
2277 | dfd = dev_open(nm, O_RDONLY); | |
2278 | if (!dfd) | |
2279 | return 1; | |
2280 | load_ddf_headers(dfd, super, NULL); | |
2281 | load_ddf_global(dfd, super, NULL); | |
2282 | close(dfd); | |
2283 | /* Now we need the device-local bits */ | |
2284 | for (sd = sra->devs ; sd ; sd = sd->next) { | |
2285 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
5f8097be | 2286 | dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY); |
a322f70c DW |
2287 | if (!dfd) |
2288 | return 2; | |
2289 | seq = load_ddf_local(dfd, super, NULL, keep_fd); | |
5f8097be | 2290 | if (!keep_fd) close(dfd); |
a322f70c DW |
2291 | } |
2292 | *sbp = super; | |
2293 | if (st->ss == NULL) { | |
598f0d58 | 2294 | st->ss = &super_ddf_container; |
a322f70c DW |
2295 | st->minor_version = 0; |
2296 | st->max_devs = 512; | |
2297 | } | |
2298 | return 0; | |
2299 | } | |
2300 | #endif | |
2301 | ||
2302 | ||
2303 | ||
598f0d58 NB |
2304 | static struct mdinfo *container_content_ddf(struct supertype *st) |
2305 | { | |
2306 | /* Given a container loaded by load_super_ddf_all, | |
2307 | * extract information about all the arrays into | |
2308 | * an mdinfo tree. | |
2309 | * | |
2310 | * For each vcl in conflist: create an mdinfo, fill it in, | |
2311 | * then look for matching devices (phys_refnum) in dlist | |
2312 | * and create appropriate device mdinfo. | |
2313 | */ | |
2314 | struct ddf_super *ddf = st->sb; | |
2315 | struct mdinfo *rest = NULL; | |
2316 | struct vcl *vc; | |
2317 | ||
2318 | for (vc = ddf->conflist ; vc ; vc=vc->next) | |
2319 | { | |
2320 | int mppe; | |
2321 | int i; | |
2322 | struct mdinfo *this; | |
2323 | this = malloc(sizeof(*this)); | |
2324 | memset(this, 0, sizeof(*this)); | |
2325 | this->next = rest; | |
2326 | rest = this; | |
2327 | ||
2328 | this->array.major_version = 1000; | |
2329 | this->array.minor_version = 0; | |
2330 | this->array.patch_version = 0; | |
2331 | this->array.level = map_num1(ddf_level_num, vc->conf.prl); | |
2332 | this->array.raid_disks = | |
2333 | __be16_to_cpu(vc->conf.prim_elmnt_count); | |
2334 | /* FIXME this should be mapped */ | |
2335 | this->array.layout = vc->conf.rlq; | |
2336 | this->array.md_minor = -1; | |
2337 | this->array.ctime = DECADE + | |
2338 | __be32_to_cpu(*(__u32*)(vc->conf.guid+16)); | |
2339 | this->array.utime = DECADE + | |
2340 | __be32_to_cpu(vc->conf.timestamp); | |
2341 | this->array.chunk_size = 512 << vc->conf.chunk_shift; | |
2342 | ||
2343 | for (i=0; i < __be16_to_cpu(ddf->virt->populated_vdes); i++) | |
2344 | if (memcmp(ddf->virt->entries[i].guid, | |
2345 | vc->conf.guid, DDF_GUID_LEN) == 0) | |
2346 | break; | |
2347 | if (ddf->virt->entries[i].state & DDF_state_inconsistent) | |
2348 | this->array.state = 0; | |
2349 | else | |
2350 | this->array.state = 1; | |
2351 | memcpy(this->name, ddf->virt->entries[i].name, 32); | |
2352 | this->name[33]=0; | |
2353 | ||
2354 | memset(this->uuid, 0, sizeof(this->uuid)); | |
2355 | this->component_size = __be64_to_cpu(vc->conf.blocks); | |
2356 | this->array.size = this->component_size / 2; | |
2357 | ||
2358 | mppe = __be16_to_cpu(ddf->anchor.max_primary_element_entries); | |
2359 | for (i=0 ; i < mppe ; i++) { | |
2360 | struct mdinfo *dev; | |
2361 | struct dl *d; | |
2362 | ||
2363 | if (vc->conf.phys_refnum[i] == 0xFFFFFFFF) | |
2364 | continue; | |
2365 | ||
2366 | this->array.working_disks++; | |
2367 | ||
2368 | for (d = ddf->dlist; d ; d=d->next) | |
2369 | if (d->disk.refnum == vc->conf.phys_refnum[i]) | |
2370 | break; | |
2371 | if (d == NULL) | |
2372 | break; | |
2373 | ||
2374 | dev = malloc(sizeof(*dev)); | |
2375 | memset(dev, 0, sizeof(*dev)); | |
2376 | dev->next = this->devs; | |
2377 | this->devs = dev; | |
2378 | ||
2379 | dev->disk.number = __be32_to_cpu(d->disk.refnum); | |
2380 | dev->disk.major = d->major; | |
2381 | dev->disk.minor = d->minor; | |
2382 | dev->disk.raid_disk = i; | |
2383 | dev->disk.state = (1<<MD_DISK_SYNC)|(1<<MD_DISK_ACTIVE); | |
2384 | ||
2385 | dev->events = __le32_to_cpu(ddf->primary.seq); | |
2386 | dev->data_offset = vc->lba_offset[i]; | |
2387 | dev->component_size = __be64_to_cpu(vc->conf.blocks); | |
2388 | if (d->devname) | |
2389 | strcpy(dev->name, d->devname); | |
2390 | } | |
2391 | } | |
2392 | return rest; | |
2393 | } | |
2394 | ||
a322f70c DW |
2395 | static int init_zero_ddf(struct supertype *st, |
2396 | mdu_array_info_t *info, | |
2397 | unsigned long long size, char *name, | |
2398 | char *homehost, int *uuid) | |
2399 | { | |
2400 | st->sb = NULL; | |
2401 | return 0; | |
2402 | } | |
2403 | ||
2404 | static int store_zero_ddf(struct supertype *st, int fd) | |
2405 | { | |
2406 | unsigned long long dsize; | |
2407 | char buf[512]; | |
2408 | memset(buf, 0, 512); | |
2409 | ||
2410 | ||
2411 | if (!get_dev_size(fd, NULL, &dsize)) | |
2412 | return 1; | |
2413 | ||
2414 | lseek64(fd, dsize-512, 0); | |
2415 | write(fd, buf, 512); | |
2416 | return 0; | |
2417 | } | |
2418 | ||
a19c88b8 NB |
2419 | static int compare_super_ddf(struct supertype *st, struct supertype *tst) |
2420 | { | |
2421 | /* | |
2422 | * return: | |
2423 | * 0 same, or first was empty, and second was copied | |
2424 | * 1 second had wrong number | |
2425 | * 2 wrong uuid | |
2426 | * 3 wrong other info | |
2427 | */ | |
2428 | struct ddf_super *first = st->sb; | |
2429 | struct ddf_super *second = tst->sb; | |
2430 | ||
2431 | if (!first) { | |
2432 | st->sb = tst->sb; | |
2433 | tst->sb = NULL; | |
2434 | return 0; | |
2435 | } | |
2436 | ||
2437 | if (memcmp(first->anchor.guid, second->anchor.guid, DDF_GUID_LEN) != 0) | |
2438 | return 2; | |
2439 | ||
2440 | /* FIXME should I look at anything else? */ | |
2441 | return 0; | |
2442 | } | |
2443 | ||
a322f70c DW |
2444 | struct superswitch super_ddf = { |
2445 | #ifndef MDASSEMBLE | |
2446 | .examine_super = examine_super_ddf, | |
2447 | .brief_examine_super = brief_examine_super_ddf, | |
2448 | .detail_super = detail_super_ddf, | |
2449 | .brief_detail_super = brief_detail_super_ddf, | |
2450 | .validate_geometry = validate_geometry_ddf, | |
2451 | #endif | |
2452 | .match_home = match_home_ddf, | |
2453 | .uuid_from_super= uuid_from_super_ddf, | |
2454 | .getinfo_super = getinfo_super_ddf, | |
2455 | .update_super = update_super_ddf, | |
2456 | ||
2457 | .avail_size = avail_size_ddf, | |
2458 | ||
a19c88b8 NB |
2459 | .compare_super = compare_super_ddf, |
2460 | ||
a322f70c DW |
2461 | .load_super = load_super_ddf, |
2462 | .init_super = init_zero_ddf, | |
2463 | .store_super = store_zero_ddf, | |
2464 | .free_super = free_super_ddf, | |
2465 | .match_metadata_desc = match_metadata_desc_ddf, | |
598f0d58 | 2466 | .getinfo_super_n = getinfo_super_n_container, |
a322f70c DW |
2467 | |
2468 | ||
2469 | .major = 1000, | |
2470 | .swapuuid = 0, | |
2471 | .external = 1, | |
2472 | .text_version = "ddf", | |
2473 | }; | |
2474 | ||
2475 | /* Super_ddf_container is set by validate_geometry_ddf when given a | |
2476 | * device that is not part of any array | |
2477 | */ | |
2478 | struct superswitch super_ddf_container = { | |
2479 | #ifndef MDASSEMBLE | |
2480 | .validate_geometry = validate_geometry_ddf_container, | |
2481 | .write_init_super = write_init_super_ddf, | |
2482 | #endif | |
2483 | ||
2484 | .init_super = init_super_ddf, | |
2485 | .add_to_super = add_to_super_ddf, | |
2486 | ||
2487 | .free_super = free_super_ddf, | |
2488 | ||
598f0d58 NB |
2489 | .container_content = container_content_ddf, |
2490 | ||
a322f70c DW |
2491 | .major = 1000, |
2492 | .swapuuid = 0, | |
2493 | .external = 1, | |
2494 | .text_version = "ddf", | |
2495 | }; | |
2496 | ||
2497 | struct superswitch super_ddf_bvd = { | |
2498 | #ifndef MDASSEMBLE | |
2499 | // .detail_super = detail_super_ddf_bvd, | |
2500 | // .brief_detail_super = brief_detail_super_ddf_bvd, | |
2501 | .validate_geometry = validate_geometry_ddf_bvd, | |
5f8097be | 2502 | .write_init_super = write_init_super_ddf, |
a322f70c DW |
2503 | #endif |
2504 | .update_super = update_super_ddf, | |
5f8097be NB |
2505 | .init_super = init_super_ddf_bvd, |
2506 | .add_to_super = add_to_super_ddf_bvd, | |
a322f70c | 2507 | .getinfo_super = getinfo_super_ddf_bvd, |
598f0d58 | 2508 | .getinfo_super_n = getinfo_super_n_bvd, |
a322f70c DW |
2509 | |
2510 | .load_super = load_super_ddf, | |
2511 | .free_super = free_super_ddf, | |
2512 | .match_metadata_desc = match_metadata_desc_ddf_bvd, | |
2513 | ||
2514 | ||
2515 | .major = 1001, | |
2516 | .swapuuid = 0, | |
5f8097be | 2517 | .external = 2, |
a322f70c DW |
2518 | .text_version = "ddf", |
2519 | }; | |
2520 | ||
2521 | struct superswitch super_ddf_svd = { | |
2522 | #ifndef MDASSEMBLE | |
2523 | // .detail_super = detail_super_ddf_svd, | |
2524 | // .brief_detail_super = brief_detail_super_ddf_svd, | |
5f8097be | 2525 | .validate_geometry = validate_geometry_ddf_svd, |
a322f70c DW |
2526 | #endif |
2527 | .update_super = update_super_ddf, | |
2528 | .init_super = init_super_ddf, | |
2529 | ||
2530 | .load_super = load_super_ddf, | |
2531 | .free_super = free_super_ddf, | |
2532 | .match_metadata_desc = match_metadata_desc_ddf_svd, | |
2533 | ||
a322f70c DW |
2534 | .major = 1002, |
2535 | .swapuuid = 0, | |
5f8097be | 2536 | .external = 2, |
a322f70c DW |
2537 | .text_version = "ddf", |
2538 | }; |