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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" | |
549e9569 | 30 | #include "mdmon.h" |
a322f70c DW |
31 | #include "sha1.h" |
32 | #include <values.h> | |
33 | ||
34 | static inline int ROUND_UP(int a, int base) | |
35 | { | |
36 | return ((a+base-1)/base)*base; | |
37 | } | |
38 | ||
39 | /* a non-official T10 name for creation GUIDs */ | |
40 | static char T10[] = "Linux-MD"; | |
41 | ||
42 | /* DDF timestamps are 1980 based, so we need to add | |
43 | * second-in-decade-of-seventies to convert to linux timestamps. | |
44 | * 10 years with 2 leap years. | |
45 | */ | |
46 | #define DECADE (3600*24*(365*10+2)) | |
47 | unsigned long crc32( | |
48 | unsigned long crc, | |
49 | const unsigned char *buf, | |
50 | unsigned len); | |
51 | ||
52 | /* The DDF metadata handling. | |
53 | * DDF metadata lives at the end of the device. | |
54 | * The last 512 byte block provides an 'anchor' which is used to locate | |
55 | * the rest of the metadata which usually lives immediately behind the anchor. | |
56 | * | |
57 | * Note: | |
58 | * - all multibyte numeric fields are bigendian. | |
59 | * - all strings are space padded. | |
60 | * | |
61 | */ | |
62 | ||
63 | /* Primary Raid Level (PRL) */ | |
64 | #define DDF_RAID0 0x00 | |
65 | #define DDF_RAID1 0x01 | |
66 | #define DDF_RAID3 0x03 | |
67 | #define DDF_RAID4 0x04 | |
68 | #define DDF_RAID5 0x05 | |
69 | #define DDF_RAID1E 0x11 | |
70 | #define DDF_JBOD 0x0f | |
71 | #define DDF_CONCAT 0x1f | |
72 | #define DDF_RAID5E 0x15 | |
73 | #define DDF_RAID5EE 0x25 | |
59e36268 | 74 | #define DDF_RAID6 0x06 |
a322f70c DW |
75 | |
76 | /* Raid Level Qualifier (RLQ) */ | |
77 | #define DDF_RAID0_SIMPLE 0x00 | |
78 | #define DDF_RAID1_SIMPLE 0x00 /* just 2 devices in this plex */ | |
79 | #define DDF_RAID1_MULTI 0x01 /* exactly 3 devices in this plex */ | |
80 | #define DDF_RAID3_0 0x00 /* parity in first extent */ | |
81 | #define DDF_RAID3_N 0x01 /* parity in last extent */ | |
82 | #define DDF_RAID4_0 0x00 /* parity in first extent */ | |
83 | #define DDF_RAID4_N 0x01 /* parity in last extent */ | |
84 | /* these apply to raid5e and raid5ee as well */ | |
85 | #define DDF_RAID5_0_RESTART 0x00 /* same as 'right asymmetric' - layout 1 */ | |
59e36268 | 86 | #define DDF_RAID6_0_RESTART 0x01 /* raid6 different from raid5 here!!! */ |
a322f70c DW |
87 | #define DDF_RAID5_N_RESTART 0x02 /* same as 'left asymmetric' - layout 0 */ |
88 | #define DDF_RAID5_N_CONTINUE 0x03 /* same as 'left symmetric' - layout 2 */ | |
89 | ||
90 | #define DDF_RAID1E_ADJACENT 0x00 /* raid10 nearcopies==2 */ | |
91 | #define DDF_RAID1E_OFFSET 0x01 /* raid10 offsetcopies==2 */ | |
92 | ||
93 | /* Secondary RAID Level (SRL) */ | |
94 | #define DDF_2STRIPED 0x00 /* This is weirder than RAID0 !! */ | |
95 | #define DDF_2MIRRORED 0x01 | |
96 | #define DDF_2CONCAT 0x02 | |
97 | #define DDF_2SPANNED 0x03 /* This is also weird - be careful */ | |
98 | ||
99 | /* Magic numbers */ | |
100 | #define DDF_HEADER_MAGIC __cpu_to_be32(0xDE11DE11) | |
101 | #define DDF_CONTROLLER_MAGIC __cpu_to_be32(0xAD111111) | |
102 | #define DDF_PHYS_RECORDS_MAGIC __cpu_to_be32(0x22222222) | |
103 | #define DDF_PHYS_DATA_MAGIC __cpu_to_be32(0x33333333) | |
104 | #define DDF_VIRT_RECORDS_MAGIC __cpu_to_be32(0xDDDDDDDD) | |
105 | #define DDF_VD_CONF_MAGIC __cpu_to_be32(0xEEEEEEEE) | |
106 | #define DDF_SPARE_ASSIGN_MAGIC __cpu_to_be32(0x55555555) | |
107 | #define DDF_VU_CONF_MAGIC __cpu_to_be32(0x88888888) | |
108 | #define DDF_VENDOR_LOG_MAGIC __cpu_to_be32(0x01dBEEF0) | |
109 | #define DDF_BBM_LOG_MAGIC __cpu_to_be32(0xABADB10C) | |
110 | ||
111 | #define DDF_GUID_LEN 24 | |
59e36268 NB |
112 | #define DDF_REVISION_0 "01.00.00" |
113 | #define DDF_REVISION_2 "01.02.00" | |
a322f70c DW |
114 | |
115 | struct ddf_header { | |
88c164f4 | 116 | __u32 magic; /* DDF_HEADER_MAGIC */ |
a322f70c DW |
117 | __u32 crc; |
118 | char guid[DDF_GUID_LEN]; | |
59e36268 | 119 | char revision[8]; /* 01.02.00 */ |
a322f70c DW |
120 | __u32 seq; /* starts at '1' */ |
121 | __u32 timestamp; | |
122 | __u8 openflag; | |
123 | __u8 foreignflag; | |
124 | __u8 enforcegroups; | |
125 | __u8 pad0; /* 0xff */ | |
126 | __u8 pad1[12]; /* 12 * 0xff */ | |
127 | /* 64 bytes so far */ | |
128 | __u8 header_ext[32]; /* reserved: fill with 0xff */ | |
129 | __u64 primary_lba; | |
130 | __u64 secondary_lba; | |
131 | __u8 type; | |
132 | __u8 pad2[3]; /* 0xff */ | |
133 | __u32 workspace_len; /* sectors for vendor space - | |
134 | * at least 32768(sectors) */ | |
135 | __u64 workspace_lba; | |
136 | __u16 max_pd_entries; /* one of 15, 63, 255, 1023, 4095 */ | |
137 | __u16 max_vd_entries; /* 2^(4,6,8,10,12)-1 : i.e. as above */ | |
138 | __u16 max_partitions; /* i.e. max num of configuration | |
139 | record entries per disk */ | |
140 | __u16 config_record_len; /* 1 +ROUNDUP(max_primary_element_entries | |
141 | *12/512) */ | |
142 | __u16 max_primary_element_entries; /* 16, 64, 256, 1024, or 4096 */ | |
143 | __u8 pad3[54]; /* 0xff */ | |
144 | /* 192 bytes so far */ | |
145 | __u32 controller_section_offset; | |
146 | __u32 controller_section_length; | |
147 | __u32 phys_section_offset; | |
148 | __u32 phys_section_length; | |
149 | __u32 virt_section_offset; | |
150 | __u32 virt_section_length; | |
151 | __u32 config_section_offset; | |
152 | __u32 config_section_length; | |
153 | __u32 data_section_offset; | |
154 | __u32 data_section_length; | |
155 | __u32 bbm_section_offset; | |
156 | __u32 bbm_section_length; | |
157 | __u32 diag_space_offset; | |
158 | __u32 diag_space_length; | |
159 | __u32 vendor_offset; | |
160 | __u32 vendor_length; | |
161 | /* 256 bytes so far */ | |
162 | __u8 pad4[256]; /* 0xff */ | |
163 | }; | |
164 | ||
165 | /* type field */ | |
166 | #define DDF_HEADER_ANCHOR 0x00 | |
167 | #define DDF_HEADER_PRIMARY 0x01 | |
168 | #define DDF_HEADER_SECONDARY 0x02 | |
169 | ||
170 | /* The content of the 'controller section' - global scope */ | |
171 | struct ddf_controller_data { | |
88c164f4 | 172 | __u32 magic; /* DDF_CONTROLLER_MAGIC */ |
a322f70c DW |
173 | __u32 crc; |
174 | char guid[DDF_GUID_LEN]; | |
175 | struct controller_type { | |
176 | __u16 vendor_id; | |
177 | __u16 device_id; | |
178 | __u16 sub_vendor_id; | |
179 | __u16 sub_device_id; | |
180 | } type; | |
181 | char product_id[16]; | |
182 | __u8 pad[8]; /* 0xff */ | |
183 | __u8 vendor_data[448]; | |
184 | }; | |
185 | ||
186 | /* The content of phys_section - global scope */ | |
187 | struct phys_disk { | |
88c164f4 | 188 | __u32 magic; /* DDF_PHYS_RECORDS_MAGIC */ |
a322f70c DW |
189 | __u32 crc; |
190 | __u16 used_pdes; | |
191 | __u16 max_pdes; | |
192 | __u8 pad[52]; | |
193 | struct phys_disk_entry { | |
194 | char guid[DDF_GUID_LEN]; | |
195 | __u32 refnum; | |
196 | __u16 type; | |
197 | __u16 state; | |
198 | __u64 config_size; /* DDF structures must be after here */ | |
199 | char path[18]; /* another horrible structure really */ | |
200 | __u8 pad[6]; | |
201 | } entries[0]; | |
202 | }; | |
203 | ||
204 | /* phys_disk_entry.type is a bitmap - bigendian remember */ | |
205 | #define DDF_Forced_PD_GUID 1 | |
206 | #define DDF_Active_in_VD 2 | |
88c164f4 | 207 | #define DDF_Global_Spare 4 /* VD_CONF records are ignored */ |
a322f70c DW |
208 | #define DDF_Spare 8 /* overrides Global_spare */ |
209 | #define DDF_Foreign 16 | |
210 | #define DDF_Legacy 32 /* no DDF on this device */ | |
211 | ||
212 | #define DDF_Interface_mask 0xf00 | |
213 | #define DDF_Interface_SCSI 0x100 | |
214 | #define DDF_Interface_SAS 0x200 | |
215 | #define DDF_Interface_SATA 0x300 | |
216 | #define DDF_Interface_FC 0x400 | |
217 | ||
218 | /* phys_disk_entry.state is a bigendian bitmap */ | |
219 | #define DDF_Online 1 | |
220 | #define DDF_Failed 2 /* overrides 1,4,8 */ | |
221 | #define DDF_Rebuilding 4 | |
222 | #define DDF_Transition 8 | |
223 | #define DDF_SMART 16 | |
224 | #define DDF_ReadErrors 32 | |
225 | #define DDF_Missing 64 | |
226 | ||
227 | /* The content of the virt_section global scope */ | |
228 | struct virtual_disk { | |
88c164f4 | 229 | __u32 magic; /* DDF_VIRT_RECORDS_MAGIC */ |
a322f70c DW |
230 | __u32 crc; |
231 | __u16 populated_vdes; | |
232 | __u16 max_vdes; | |
233 | __u8 pad[52]; | |
234 | struct virtual_entry { | |
235 | char guid[DDF_GUID_LEN]; | |
236 | __u16 unit; | |
237 | __u16 pad0; /* 0xffff */ | |
238 | __u16 guid_crc; | |
239 | __u16 type; | |
240 | __u8 state; | |
241 | __u8 init_state; | |
242 | __u8 pad1[14]; | |
243 | char name[16]; | |
244 | } entries[0]; | |
245 | }; | |
246 | ||
247 | /* virtual_entry.type is a bitmap - bigendian */ | |
248 | #define DDF_Shared 1 | |
249 | #define DDF_Enforce_Groups 2 | |
250 | #define DDF_Unicode 4 | |
251 | #define DDF_Owner_Valid 8 | |
252 | ||
253 | /* virtual_entry.state is a bigendian bitmap */ | |
254 | #define DDF_state_mask 0x7 | |
255 | #define DDF_state_optimal 0x0 | |
256 | #define DDF_state_degraded 0x1 | |
257 | #define DDF_state_deleted 0x2 | |
258 | #define DDF_state_missing 0x3 | |
259 | #define DDF_state_failed 0x4 | |
7a7cc504 | 260 | #define DDF_state_part_optimal 0x5 |
a322f70c DW |
261 | |
262 | #define DDF_state_morphing 0x8 | |
263 | #define DDF_state_inconsistent 0x10 | |
264 | ||
265 | /* virtual_entry.init_state is a bigendian bitmap */ | |
266 | #define DDF_initstate_mask 0x03 | |
267 | #define DDF_init_not 0x00 | |
7a7cc504 NB |
268 | #define DDF_init_quick 0x01 /* initialisation is progress. |
269 | * i.e. 'state_inconsistent' */ | |
a322f70c DW |
270 | #define DDF_init_full 0x02 |
271 | ||
272 | #define DDF_access_mask 0xc0 | |
273 | #define DDF_access_rw 0x00 | |
274 | #define DDF_access_ro 0x80 | |
275 | #define DDF_access_blocked 0xc0 | |
276 | ||
277 | /* The content of the config_section - local scope | |
278 | * It has multiple records each config_record_len sectors | |
279 | * They can be vd_config or spare_assign | |
280 | */ | |
281 | ||
282 | struct vd_config { | |
88c164f4 | 283 | __u32 magic; /* DDF_VD_CONF_MAGIC */ |
a322f70c DW |
284 | __u32 crc; |
285 | char guid[DDF_GUID_LEN]; | |
286 | __u32 timestamp; | |
287 | __u32 seqnum; | |
288 | __u8 pad0[24]; | |
289 | __u16 prim_elmnt_count; | |
290 | __u8 chunk_shift; /* 0 == 512, 1==1024 etc */ | |
291 | __u8 prl; | |
292 | __u8 rlq; | |
293 | __u8 sec_elmnt_count; | |
294 | __u8 sec_elmnt_seq; | |
295 | __u8 srl; | |
598f0d58 NB |
296 | __u64 blocks; /* blocks per component could be different |
297 | * on different component devices...(only | |
298 | * for concat I hope) */ | |
299 | __u64 array_blocks; /* blocks in array */ | |
a322f70c DW |
300 | __u8 pad1[8]; |
301 | __u32 spare_refs[8]; | |
302 | __u8 cache_pol[8]; | |
303 | __u8 bg_rate; | |
304 | __u8 pad2[3]; | |
305 | __u8 pad3[52]; | |
306 | __u8 pad4[192]; | |
307 | __u8 v0[32]; /* reserved- 0xff */ | |
308 | __u8 v1[32]; /* reserved- 0xff */ | |
309 | __u8 v2[16]; /* reserved- 0xff */ | |
310 | __u8 v3[16]; /* reserved- 0xff */ | |
311 | __u8 vendor[32]; | |
312 | __u32 phys_refnum[0]; /* refnum of each disk in sequence */ | |
313 | /*__u64 lba_offset[0]; LBA offset in each phys. Note extents in a | |
314 | bvd are always the same size */ | |
315 | }; | |
316 | ||
317 | /* vd_config.cache_pol[7] is a bitmap */ | |
318 | #define DDF_cache_writeback 1 /* else writethrough */ | |
319 | #define DDF_cache_wadaptive 2 /* only applies if writeback */ | |
320 | #define DDF_cache_readahead 4 | |
321 | #define DDF_cache_radaptive 8 /* only if doing read-ahead */ | |
322 | #define DDF_cache_ifnobatt 16 /* even to write cache if battery is poor */ | |
323 | #define DDF_cache_wallowed 32 /* enable write caching */ | |
324 | #define DDF_cache_rallowed 64 /* enable read caching */ | |
325 | ||
326 | struct spare_assign { | |
88c164f4 | 327 | __u32 magic; /* DDF_SPARE_ASSIGN_MAGIC */ |
a322f70c DW |
328 | __u32 crc; |
329 | __u32 timestamp; | |
330 | __u8 reserved[7]; | |
331 | __u8 type; | |
332 | __u16 populated; /* SAEs used */ | |
333 | __u16 max; /* max SAEs */ | |
334 | __u8 pad[8]; | |
335 | struct spare_assign_entry { | |
336 | char guid[DDF_GUID_LEN]; | |
337 | __u16 secondary_element; | |
338 | __u8 pad[6]; | |
339 | } spare_ents[0]; | |
340 | }; | |
341 | /* spare_assign.type is a bitmap */ | |
342 | #define DDF_spare_dedicated 0x1 /* else global */ | |
343 | #define DDF_spare_revertible 0x2 /* else committable */ | |
344 | #define DDF_spare_active 0x4 /* else not active */ | |
345 | #define DDF_spare_affinity 0x8 /* enclosure affinity */ | |
346 | ||
347 | /* The data_section contents - local scope */ | |
348 | struct disk_data { | |
88c164f4 | 349 | __u32 magic; /* DDF_PHYS_DATA_MAGIC */ |
a322f70c DW |
350 | __u32 crc; |
351 | char guid[DDF_GUID_LEN]; | |
352 | __u32 refnum; /* crc of some magic drive data ... */ | |
353 | __u8 forced_ref; /* set when above was not result of magic */ | |
354 | __u8 forced_guid; /* set if guid was forced rather than magic */ | |
355 | __u8 vendor[32]; | |
356 | __u8 pad[442]; | |
357 | }; | |
358 | ||
359 | /* bbm_section content */ | |
360 | struct bad_block_log { | |
361 | __u32 magic; | |
362 | __u32 crc; | |
363 | __u16 entry_count; | |
364 | __u32 spare_count; | |
365 | __u8 pad[10]; | |
366 | __u64 first_spare; | |
367 | struct mapped_block { | |
368 | __u64 defective_start; | |
369 | __u32 replacement_start; | |
370 | __u16 remap_count; | |
371 | __u8 pad[2]; | |
372 | } entries[0]; | |
373 | }; | |
374 | ||
375 | /* Struct for internally holding ddf structures */ | |
376 | /* The DDF structure stored on each device is potentially | |
377 | * quite different, as some data is global and some is local. | |
378 | * The global data is: | |
379 | * - ddf header | |
380 | * - controller_data | |
381 | * - Physical disk records | |
382 | * - Virtual disk records | |
383 | * The local data is: | |
384 | * - Configuration records | |
385 | * - Physical Disk data section | |
386 | * ( and Bad block and vendor which I don't care about yet). | |
387 | * | |
388 | * The local data is parsed into separate lists as it is read | |
389 | * and reconstructed for writing. This means that we only need | |
390 | * to make config changes once and they are automatically | |
391 | * propagated to all devices. | |
392 | * Note that the ddf_super has space of the conf and disk data | |
393 | * for this disk and also for a list of all such data. | |
394 | * The list is only used for the superblock that is being | |
395 | * built in Create or Assemble to describe the whole array. | |
396 | */ | |
397 | struct ddf_super { | |
398 | struct ddf_header anchor, primary, secondary, *active; | |
399 | struct ddf_controller_data controller; | |
400 | struct phys_disk *phys; | |
401 | struct virtual_disk *virt; | |
402 | int pdsize, vdsize; | |
8c3b8c2c | 403 | int max_part, mppe, conf_rec_len; |
d2ca6449 | 404 | int currentdev; |
a322f70c DW |
405 | struct vcl { |
406 | struct vcl *next; | |
407 | __u64 *lba_offset; /* location in 'conf' of | |
408 | * the lba table */ | |
59e36268 NB |
409 | int vcnum; /* index into ->virt */ |
410 | __u64 *block_sizes; /* NULL if all the same */ | |
a322f70c | 411 | struct vd_config conf; |
d2ca6449 | 412 | } *conflist, *currentconf; |
a322f70c DW |
413 | struct dl { |
414 | struct dl *next; | |
415 | struct disk_data disk; | |
416 | int major, minor; | |
417 | char *devname; | |
418 | int fd; | |
d2ca6449 | 419 | unsigned long long size; /* sectors */ |
5575e7d9 | 420 | int pdnum; /* index in ->phys */ |
b2280677 NB |
421 | struct spare_assign *spare; |
422 | struct vcl *vlist[0]; /* max_part in size */ | |
a322f70c DW |
423 | } *dlist; |
424 | }; | |
425 | ||
426 | #ifndef offsetof | |
427 | #define offsetof(t,f) ((size_t)&(((t*)0)->f)) | |
428 | #endif | |
429 | ||
a322f70c DW |
430 | |
431 | static int calc_crc(void *buf, int len) | |
432 | { | |
433 | /* crcs are always at the same place as in the ddf_header */ | |
434 | struct ddf_header *ddf = buf; | |
435 | __u32 oldcrc = ddf->crc; | |
436 | __u32 newcrc; | |
437 | ddf->crc = 0xffffffff; | |
438 | ||
439 | newcrc = crc32(0, buf, len); | |
440 | ddf->crc = oldcrc; | |
441 | return newcrc; | |
442 | } | |
443 | ||
444 | static int load_ddf_header(int fd, unsigned long long lba, | |
445 | unsigned long long size, | |
446 | int type, | |
447 | struct ddf_header *hdr, struct ddf_header *anchor) | |
448 | { | |
449 | /* read a ddf header (primary or secondary) from fd/lba | |
450 | * and check that it is consistent with anchor | |
451 | * Need to check: | |
452 | * magic, crc, guid, rev, and LBA's header_type, and | |
453 | * everything after header_type must be the same | |
454 | */ | |
455 | if (lba >= size-1) | |
456 | return 0; | |
457 | ||
458 | if (lseek64(fd, lba<<9, 0) < 0) | |
459 | return 0; | |
460 | ||
461 | if (read(fd, hdr, 512) != 512) | |
462 | return 0; | |
463 | ||
464 | if (hdr->magic != DDF_HEADER_MAGIC) | |
465 | return 0; | |
466 | if (calc_crc(hdr, 512) != hdr->crc) | |
467 | return 0; | |
468 | if (memcmp(anchor->guid, hdr->guid, DDF_GUID_LEN) != 0 || | |
469 | memcmp(anchor->revision, hdr->revision, 8) != 0 || | |
470 | anchor->primary_lba != hdr->primary_lba || | |
471 | anchor->secondary_lba != hdr->secondary_lba || | |
472 | hdr->type != type || | |
473 | memcmp(anchor->pad2, hdr->pad2, 512 - | |
474 | offsetof(struct ddf_header, pad2)) != 0) | |
475 | return 0; | |
476 | ||
477 | /* Looks good enough to me... */ | |
478 | return 1; | |
479 | } | |
480 | ||
481 | static void *load_section(int fd, struct ddf_super *super, void *buf, | |
482 | __u32 offset_be, __u32 len_be, int check) | |
483 | { | |
484 | unsigned long long offset = __be32_to_cpu(offset_be); | |
485 | unsigned long long len = __be32_to_cpu(len_be); | |
486 | int dofree = (buf == NULL); | |
487 | ||
488 | if (check) | |
489 | if (len != 2 && len != 8 && len != 32 | |
490 | && len != 128 && len != 512) | |
491 | return NULL; | |
492 | ||
493 | if (len > 1024) | |
494 | return NULL; | |
495 | if (buf) { | |
496 | /* All pre-allocated sections are a single block */ | |
497 | if (len != 1) | |
498 | return NULL; | |
499 | } else | |
500 | buf = malloc(len<<9); | |
501 | if (!buf) | |
502 | return NULL; | |
503 | ||
504 | if (super->active->type == 1) | |
505 | offset += __be64_to_cpu(super->active->primary_lba); | |
506 | else | |
507 | offset += __be64_to_cpu(super->active->secondary_lba); | |
508 | ||
509 | if (lseek64(fd, offset<<9, 0) != (offset<<9)) { | |
510 | if (dofree) | |
511 | free(buf); | |
512 | return NULL; | |
513 | } | |
514 | if (read(fd, buf, len<<9) != (len<<9)) { | |
515 | if (dofree) | |
516 | free(buf); | |
517 | return NULL; | |
518 | } | |
519 | return buf; | |
520 | } | |
521 | ||
522 | static int load_ddf_headers(int fd, struct ddf_super *super, char *devname) | |
523 | { | |
524 | unsigned long long dsize; | |
525 | ||
526 | get_dev_size(fd, NULL, &dsize); | |
527 | ||
528 | if (lseek64(fd, dsize-512, 0) < 0) { | |
529 | if (devname) | |
530 | fprintf(stderr, | |
531 | Name": Cannot seek to anchor block on %s: %s\n", | |
532 | devname, strerror(errno)); | |
533 | return 1; | |
534 | } | |
535 | if (read(fd, &super->anchor, 512) != 512) { | |
536 | if (devname) | |
537 | fprintf(stderr, | |
538 | Name ": Cannot read anchor block on %s: %s\n", | |
539 | devname, strerror(errno)); | |
540 | return 1; | |
541 | } | |
542 | if (super->anchor.magic != DDF_HEADER_MAGIC) { | |
543 | if (devname) | |
544 | fprintf(stderr, Name ": no DDF anchor found on %s\n", | |
545 | devname); | |
546 | return 2; | |
547 | } | |
548 | if (calc_crc(&super->anchor, 512) != super->anchor.crc) { | |
549 | if (devname) | |
550 | fprintf(stderr, Name ": bad CRC on anchor on %s\n", | |
551 | devname); | |
552 | return 2; | |
553 | } | |
59e36268 NB |
554 | if (memcmp(super->anchor.revision, DDF_REVISION_0, 8) != 0 && |
555 | memcmp(super->anchor.revision, DDF_REVISION_2, 8) != 0) { | |
a322f70c DW |
556 | if (devname) |
557 | fprintf(stderr, Name ": can only support super revision" | |
59e36268 NB |
558 | " %.8s and earlier, not %.8s on %s\n", |
559 | DDF_REVISION_2, super->anchor.revision,devname); | |
a322f70c DW |
560 | return 2; |
561 | } | |
562 | if (load_ddf_header(fd, __be64_to_cpu(super->anchor.primary_lba), | |
563 | dsize >> 9, 1, | |
564 | &super->primary, &super->anchor) == 0) { | |
565 | if (devname) | |
566 | fprintf(stderr, | |
567 | Name ": Failed to load primary DDF header " | |
568 | "on %s\n", devname); | |
569 | return 2; | |
570 | } | |
571 | super->active = &super->primary; | |
572 | if (load_ddf_header(fd, __be64_to_cpu(super->anchor.secondary_lba), | |
573 | dsize >> 9, 2, | |
574 | &super->secondary, &super->anchor)) { | |
575 | if ((__be32_to_cpu(super->primary.seq) | |
576 | < __be32_to_cpu(super->secondary.seq) && | |
577 | !super->secondary.openflag) | |
578 | || (__be32_to_cpu(super->primary.seq) | |
579 | == __be32_to_cpu(super->secondary.seq) && | |
580 | super->primary.openflag && !super->secondary.openflag) | |
581 | ) | |
582 | super->active = &super->secondary; | |
583 | } | |
584 | return 0; | |
585 | } | |
586 | ||
587 | static int load_ddf_global(int fd, struct ddf_super *super, char *devname) | |
588 | { | |
589 | void *ok; | |
590 | ok = load_section(fd, super, &super->controller, | |
591 | super->active->controller_section_offset, | |
592 | super->active->controller_section_length, | |
593 | 0); | |
594 | super->phys = load_section(fd, super, NULL, | |
595 | super->active->phys_section_offset, | |
596 | super->active->phys_section_length, | |
597 | 1); | |
598 | super->pdsize = __be32_to_cpu(super->active->phys_section_length) * 512; | |
599 | ||
600 | super->virt = load_section(fd, super, NULL, | |
601 | super->active->virt_section_offset, | |
602 | super->active->virt_section_length, | |
603 | 1); | |
604 | super->vdsize = __be32_to_cpu(super->active->virt_section_length) * 512; | |
605 | if (!ok || | |
606 | !super->phys || | |
607 | !super->virt) { | |
608 | free(super->phys); | |
609 | free(super->virt); | |
a2349791 NB |
610 | super->phys = NULL; |
611 | super->virt = NULL; | |
a322f70c DW |
612 | return 2; |
613 | } | |
614 | super->conflist = NULL; | |
615 | super->dlist = NULL; | |
8c3b8c2c NB |
616 | |
617 | super->max_part = __be16_to_cpu(super->active->max_partitions); | |
618 | super->mppe = __be16_to_cpu(super->active->max_primary_element_entries); | |
619 | super->conf_rec_len = __be16_to_cpu(super->active->config_record_len); | |
a322f70c DW |
620 | return 0; |
621 | } | |
622 | ||
623 | static int load_ddf_local(int fd, struct ddf_super *super, | |
624 | char *devname, int keep) | |
625 | { | |
626 | struct dl *dl; | |
627 | struct stat stb; | |
628 | char *conf; | |
629 | int i; | |
b2280677 | 630 | int vnum; |
59e36268 | 631 | int max_virt_disks = __be16_to_cpu(super->active->max_vd_entries); |
d2ca6449 | 632 | unsigned long long dsize; |
a322f70c DW |
633 | |
634 | /* First the local disk info */ | |
a322f70c | 635 | dl = malloc(sizeof(*dl) + |
b2280677 | 636 | (super->max_part) * sizeof(dl->vlist[0])); |
a322f70c DW |
637 | |
638 | load_section(fd, super, &dl->disk, | |
639 | super->active->data_section_offset, | |
640 | super->active->data_section_length, | |
641 | 0); | |
642 | dl->devname = devname ? strdup(devname) : NULL; | |
598f0d58 | 643 | |
a322f70c DW |
644 | fstat(fd, &stb); |
645 | dl->major = major(stb.st_rdev); | |
646 | dl->minor = minor(stb.st_rdev); | |
647 | dl->next = super->dlist; | |
648 | dl->fd = keep ? fd : -1; | |
d2ca6449 NB |
649 | |
650 | dl->size = 0; | |
651 | if (get_dev_size(fd, devname, &dsize)) | |
652 | dl->size = dsize >> 9; | |
b2280677 NB |
653 | dl->spare = NULL; |
654 | for (i=0 ; i < super->max_part ; i++) | |
a322f70c DW |
655 | dl->vlist[i] = NULL; |
656 | super->dlist = dl; | |
59e36268 | 657 | dl->pdnum = -1; |
5575e7d9 NB |
658 | for (i=0; i < __be16_to_cpu(super->active->max_pd_entries); i++) |
659 | if (memcmp(super->phys->entries[i].guid, | |
660 | dl->disk.guid, DDF_GUID_LEN) == 0) | |
661 | dl->pdnum = i; | |
662 | ||
a322f70c DW |
663 | /* Now the config list. */ |
664 | /* 'conf' is an array of config entries, some of which are | |
665 | * probably invalid. Those which are good need to be copied into | |
666 | * the conflist | |
667 | */ | |
a322f70c DW |
668 | |
669 | conf = load_section(fd, super, NULL, | |
670 | super->active->config_section_offset, | |
671 | super->active->config_section_length, | |
672 | 0); | |
673 | ||
b2280677 | 674 | vnum = 0; |
a322f70c DW |
675 | for (i = 0; |
676 | i < __be32_to_cpu(super->active->config_section_length); | |
8c3b8c2c | 677 | i += super->conf_rec_len) { |
a322f70c DW |
678 | struct vd_config *vd = |
679 | (struct vd_config *)((char*)conf + i*512); | |
680 | struct vcl *vcl; | |
681 | ||
b2280677 NB |
682 | if (vd->magic == DDF_SPARE_ASSIGN_MAGIC) { |
683 | if (dl->spare) | |
684 | continue; | |
685 | dl->spare = malloc(super->conf_rec_len*512); | |
686 | memcpy(dl->spare, vd, super->conf_rec_len*512); | |
687 | continue; | |
688 | } | |
a322f70c DW |
689 | if (vd->magic != DDF_VD_CONF_MAGIC) |
690 | continue; | |
691 | for (vcl = super->conflist; vcl; vcl = vcl->next) { | |
692 | if (memcmp(vcl->conf.guid, | |
693 | vd->guid, DDF_GUID_LEN) == 0) | |
694 | break; | |
695 | } | |
696 | ||
697 | if (vcl) { | |
b2280677 | 698 | dl->vlist[vnum++] = vcl; |
a322f70c DW |
699 | if (__be32_to_cpu(vd->seqnum) <= |
700 | __be32_to_cpu(vcl->conf.seqnum)) | |
701 | continue; | |
59e36268 | 702 | } else { |
8c3b8c2c NB |
703 | vcl = malloc(super->conf_rec_len*512 + |
704 | offsetof(struct vcl, conf)); | |
a322f70c | 705 | vcl->next = super->conflist; |
59e36268 | 706 | vcl->block_sizes = NULL; /* FIXME not for CONCAT */ |
a322f70c | 707 | super->conflist = vcl; |
b2280677 | 708 | dl->vlist[vnum++] = vcl; |
a322f70c | 709 | } |
8c3b8c2c | 710 | memcpy(&vcl->conf, vd, super->conf_rec_len*512); |
a322f70c | 711 | vcl->lba_offset = (__u64*) |
8c3b8c2c | 712 | &vcl->conf.phys_refnum[super->mppe]; |
59e36268 NB |
713 | |
714 | for (i=0; i < max_virt_disks ; i++) | |
715 | if (memcmp(super->virt->entries[i].guid, | |
716 | vcl->conf.guid, DDF_GUID_LEN)==0) | |
717 | break; | |
718 | if (i < max_virt_disks) | |
719 | vcl->vcnum = i; | |
a322f70c DW |
720 | } |
721 | free(conf); | |
722 | ||
723 | return 0; | |
724 | } | |
725 | ||
726 | #ifndef MDASSEMBLE | |
727 | static int load_super_ddf_all(struct supertype *st, int fd, | |
728 | void **sbp, char *devname, int keep_fd); | |
729 | #endif | |
730 | static int load_super_ddf(struct supertype *st, int fd, | |
731 | char *devname) | |
732 | { | |
733 | unsigned long long dsize; | |
734 | struct ddf_super *super; | |
735 | int rv; | |
736 | ||
737 | #ifndef MDASSEMBLE | |
59e36268 | 738 | /* if 'fd' is a container, load metadata from all the devices */ |
3dbccbcf | 739 | if (load_super_ddf_all(st, fd, &st->sb, devname, 1) == 0) |
a322f70c DW |
740 | return 0; |
741 | #endif | |
f7e7067b NB |
742 | if (st->subarray[0]) |
743 | return 1; /* FIXME Is this correct */ | |
a322f70c DW |
744 | |
745 | if (get_dev_size(fd, devname, &dsize) == 0) | |
746 | return 1; | |
747 | ||
748 | /* 32M is a lower bound */ | |
749 | if (dsize <= 32*1024*1024) { | |
750 | if (devname) { | |
751 | fprintf(stderr, | |
752 | Name ": %s is too small for ddf: " | |
753 | "size is %llu sectors.\n", | |
754 | devname, dsize>>9); | |
755 | return 1; | |
756 | } | |
757 | } | |
758 | if (dsize & 511) { | |
759 | if (devname) { | |
760 | fprintf(stderr, | |
761 | Name ": %s is an odd size for ddf: " | |
762 | "size is %llu bytes.\n", | |
763 | devname, dsize); | |
764 | return 1; | |
765 | } | |
766 | } | |
767 | ||
768 | super = malloc(sizeof(*super)); | |
769 | if (!super) { | |
770 | fprintf(stderr, Name ": malloc of %zu failed.\n", | |
771 | sizeof(*super)); | |
772 | return 1; | |
773 | } | |
a2349791 | 774 | memset(super, 0, sizeof(*super)); |
a322f70c DW |
775 | |
776 | rv = load_ddf_headers(fd, super, devname); | |
777 | if (rv) { | |
778 | free(super); | |
779 | return rv; | |
780 | } | |
781 | ||
782 | /* Have valid headers and have chosen the best. Let's read in the rest*/ | |
783 | ||
784 | rv = load_ddf_global(fd, super, devname); | |
785 | ||
786 | if (rv) { | |
787 | if (devname) | |
788 | fprintf(stderr, | |
789 | Name ": Failed to load all information " | |
790 | "sections on %s\n", devname); | |
791 | free(super); | |
792 | return rv; | |
793 | } | |
794 | ||
795 | load_ddf_local(fd, super, devname, 0); | |
796 | ||
797 | /* Should possibly check the sections .... */ | |
798 | ||
799 | st->sb = super; | |
800 | if (st->ss == NULL) { | |
801 | st->ss = &super_ddf; | |
802 | st->minor_version = 0; | |
803 | st->max_devs = 512; | |
804 | } | |
805 | return 0; | |
806 | ||
807 | } | |
808 | ||
809 | static void free_super_ddf(struct supertype *st) | |
810 | { | |
811 | struct ddf_super *ddf = st->sb; | |
812 | if (ddf == NULL) | |
813 | return; | |
814 | free(ddf->phys); | |
815 | free(ddf->virt); | |
816 | while (ddf->conflist) { | |
817 | struct vcl *v = ddf->conflist; | |
818 | ddf->conflist = v->next; | |
59e36268 NB |
819 | if (v->block_sizes) |
820 | free(v->block_sizes); | |
a322f70c DW |
821 | free(v); |
822 | } | |
823 | while (ddf->dlist) { | |
824 | struct dl *d = ddf->dlist; | |
825 | ddf->dlist = d->next; | |
826 | if (d->fd >= 0) | |
827 | close(d->fd); | |
b2280677 NB |
828 | if (d->spare) |
829 | free(d->spare); | |
a322f70c DW |
830 | free(d); |
831 | } | |
832 | free(ddf); | |
833 | st->sb = NULL; | |
834 | } | |
835 | ||
836 | static struct supertype *match_metadata_desc_ddf(char *arg) | |
837 | { | |
838 | /* 'ddf' only support containers */ | |
839 | struct supertype *st; | |
840 | if (strcmp(arg, "ddf") != 0 && | |
841 | strcmp(arg, "default") != 0 | |
842 | ) | |
843 | return NULL; | |
844 | ||
845 | st = malloc(sizeof(*st)); | |
ef609477 | 846 | memset(st, 0, sizeof(*st)); |
a322f70c DW |
847 | st->ss = &super_ddf; |
848 | st->max_devs = 512; | |
849 | st->minor_version = 0; | |
850 | st->sb = NULL; | |
851 | return st; | |
852 | } | |
853 | ||
a322f70c DW |
854 | |
855 | #ifndef MDASSEMBLE | |
856 | ||
857 | static mapping_t ddf_state[] = { | |
858 | { "Optimal", 0}, | |
859 | { "Degraded", 1}, | |
860 | { "Deleted", 2}, | |
861 | { "Missing", 3}, | |
862 | { "Failed", 4}, | |
863 | { "Partially Optimal", 5}, | |
864 | { "-reserved-", 6}, | |
865 | { "-reserved-", 7}, | |
866 | { NULL, 0} | |
867 | }; | |
868 | ||
869 | static mapping_t ddf_init_state[] = { | |
870 | { "Not Initialised", 0}, | |
871 | { "QuickInit in Progress", 1}, | |
872 | { "Fully Initialised", 2}, | |
873 | { "*UNKNOWN*", 3}, | |
874 | { NULL, 0} | |
875 | }; | |
876 | static mapping_t ddf_access[] = { | |
877 | { "Read/Write", 0}, | |
878 | { "Reserved", 1}, | |
879 | { "Read Only", 2}, | |
880 | { "Blocked (no access)", 3}, | |
881 | { NULL ,0} | |
882 | }; | |
883 | ||
884 | static mapping_t ddf_level[] = { | |
885 | { "RAID0", DDF_RAID0}, | |
886 | { "RAID1", DDF_RAID1}, | |
887 | { "RAID3", DDF_RAID3}, | |
888 | { "RAID4", DDF_RAID4}, | |
889 | { "RAID5", DDF_RAID5}, | |
890 | { "RAID1E",DDF_RAID1E}, | |
891 | { "JBOD", DDF_JBOD}, | |
892 | { "CONCAT",DDF_CONCAT}, | |
893 | { "RAID5E",DDF_RAID5E}, | |
894 | { "RAID5EE",DDF_RAID5EE}, | |
895 | { "RAID6", DDF_RAID6}, | |
896 | { NULL, 0} | |
897 | }; | |
898 | static mapping_t ddf_sec_level[] = { | |
899 | { "Striped", DDF_2STRIPED}, | |
900 | { "Mirrored", DDF_2MIRRORED}, | |
901 | { "Concat", DDF_2CONCAT}, | |
902 | { "Spanned", DDF_2SPANNED}, | |
903 | { NULL, 0} | |
904 | }; | |
905 | #endif | |
906 | ||
907 | struct num_mapping { | |
908 | int num1, num2; | |
909 | }; | |
910 | static struct num_mapping ddf_level_num[] = { | |
911 | { DDF_RAID0, 0 }, | |
912 | { DDF_RAID1, 1 }, | |
913 | { DDF_RAID3, LEVEL_UNSUPPORTED }, | |
60f18132 NB |
914 | { DDF_RAID4, 4 }, |
915 | { DDF_RAID5, 5 }, | |
a322f70c DW |
916 | { DDF_RAID1E, LEVEL_UNSUPPORTED }, |
917 | { DDF_JBOD, LEVEL_UNSUPPORTED }, | |
918 | { DDF_CONCAT, LEVEL_LINEAR }, | |
919 | { DDF_RAID5E, LEVEL_UNSUPPORTED }, | |
920 | { DDF_RAID5EE, LEVEL_UNSUPPORTED }, | |
921 | { DDF_RAID6, 6}, | |
922 | { MAXINT, MAXINT } | |
923 | }; | |
924 | ||
925 | static int map_num1(struct num_mapping *map, int num) | |
926 | { | |
927 | int i; | |
928 | for (i=0 ; map[i].num1 != MAXINT; i++) | |
929 | if (map[i].num1 == num) | |
930 | break; | |
931 | return map[i].num2; | |
932 | } | |
933 | ||
934 | #ifndef MDASSEMBLE | |
935 | static void print_guid(char *guid, int tstamp) | |
936 | { | |
937 | /* A GUIDs are part (or all) ASCII and part binary. | |
938 | * They tend to be space padded. | |
59e36268 NB |
939 | * We print the GUID in HEX, then in parentheses add |
940 | * any initial ASCII sequence, and a possible | |
941 | * time stamp from bytes 16-19 | |
a322f70c DW |
942 | */ |
943 | int l = DDF_GUID_LEN; | |
944 | int i; | |
59e36268 NB |
945 | |
946 | for (i=0 ; i<DDF_GUID_LEN ; i++) { | |
947 | if ((i&3)==0 && i != 0) printf(":"); | |
948 | printf("%02X", guid[i]&255); | |
949 | } | |
950 | ||
951 | printf(" ("); | |
a322f70c DW |
952 | while (l && guid[l-1] == ' ') |
953 | l--; | |
954 | for (i=0 ; i<l ; i++) { | |
955 | if (guid[i] >= 0x20 && guid[i] < 0x7f) | |
956 | fputc(guid[i], stdout); | |
957 | else | |
59e36268 | 958 | break; |
a322f70c DW |
959 | } |
960 | if (tstamp) { | |
961 | time_t then = __be32_to_cpu(*(__u32*)(guid+16)) + DECADE; | |
962 | char tbuf[100]; | |
963 | struct tm *tm; | |
964 | tm = localtime(&then); | |
59e36268 | 965 | strftime(tbuf, 100, " %D %T",tm); |
a322f70c DW |
966 | fputs(tbuf, stdout); |
967 | } | |
59e36268 | 968 | printf(")"); |
a322f70c DW |
969 | } |
970 | ||
971 | static void examine_vd(int n, struct ddf_super *sb, char *guid) | |
972 | { | |
8c3b8c2c | 973 | int crl = sb->conf_rec_len; |
a322f70c DW |
974 | struct vcl *vcl; |
975 | ||
976 | for (vcl = sb->conflist ; vcl ; vcl = vcl->next) { | |
977 | struct vd_config *vc = &vcl->conf; | |
978 | ||
979 | if (calc_crc(vc, crl*512) != vc->crc) | |
980 | continue; | |
981 | if (memcmp(vc->guid, guid, DDF_GUID_LEN) != 0) | |
982 | continue; | |
983 | ||
984 | /* Ok, we know about this VD, let's give more details */ | |
985 | printf(" Raid Devices[%d] : %d\n", n, | |
986 | __be16_to_cpu(vc->prim_elmnt_count)); | |
987 | printf(" Chunk Size[%d] : %d sectors\n", n, | |
988 | 1 << vc->chunk_shift); | |
989 | printf(" Raid Level[%d] : %s\n", n, | |
990 | map_num(ddf_level, vc->prl)?:"-unknown-"); | |
991 | if (vc->sec_elmnt_count != 1) { | |
992 | printf(" Secondary Position[%d] : %d of %d\n", n, | |
993 | vc->sec_elmnt_seq, vc->sec_elmnt_count); | |
994 | printf(" Secondary Level[%d] : %s\n", n, | |
995 | map_num(ddf_sec_level, vc->srl) ?: "-unknown-"); | |
996 | } | |
997 | printf(" Device Size[%d] : %llu\n", n, | |
998 | __be64_to_cpu(vc->blocks)/2); | |
999 | printf(" Array Size[%d] : %llu\n", n, | |
1000 | __be64_to_cpu(vc->array_blocks)/2); | |
1001 | } | |
1002 | } | |
1003 | ||
1004 | static void examine_vds(struct ddf_super *sb) | |
1005 | { | |
1006 | int cnt = __be16_to_cpu(sb->virt->populated_vdes); | |
1007 | int i; | |
1008 | printf(" Virtual Disks : %d\n", cnt); | |
1009 | ||
1010 | for (i=0; i<cnt; i++) { | |
1011 | struct virtual_entry *ve = &sb->virt->entries[i]; | |
1012 | printf(" VD GUID[%d] : ", i); print_guid(ve->guid, 1); | |
1013 | printf("\n"); | |
1014 | printf(" unit[%d] : %d\n", i, __be16_to_cpu(ve->unit)); | |
1015 | printf(" state[%d] : %s, %s%s\n", i, | |
1016 | map_num(ddf_state, ve->state & 7), | |
1017 | (ve->state & 8) ? "Morphing, ": "", | |
1018 | (ve->state & 16)? "Not Consistent" : "Consistent"); | |
1019 | printf(" init state[%d] : %s\n", i, | |
1020 | map_num(ddf_init_state, ve->init_state&3)); | |
1021 | printf(" access[%d] : %s\n", i, | |
1022 | map_num(ddf_access, (ve->init_state>>6) & 3)); | |
1023 | printf(" Name[%d] : %.16s\n", i, ve->name); | |
1024 | examine_vd(i, sb, ve->guid); | |
1025 | } | |
1026 | if (cnt) printf("\n"); | |
1027 | } | |
1028 | ||
1029 | static void examine_pds(struct ddf_super *sb) | |
1030 | { | |
1031 | int cnt = __be16_to_cpu(sb->phys->used_pdes); | |
1032 | int i; | |
1033 | struct dl *dl; | |
1034 | printf(" Physical Disks : %d\n", cnt); | |
1035 | ||
1036 | for (i=0 ; i<cnt ; i++) { | |
1037 | struct phys_disk_entry *pd = &sb->phys->entries[i]; | |
1038 | int type = __be16_to_cpu(pd->type); | |
1039 | int state = __be16_to_cpu(pd->state); | |
1040 | ||
1041 | printf(" PD GUID[%d] : ", i); print_guid(pd->guid, 0); | |
1042 | printf("\n"); | |
1043 | printf(" ref[%d] : %08x\n", i, | |
1044 | __be32_to_cpu(pd->refnum)); | |
1045 | printf(" mode[%d] : %s%s%s%s%s\n", i, | |
1046 | (type&2) ? "active":"", | |
1047 | (type&4) ? "Global Spare":"", | |
1048 | (type&8) ? "spare" : "", | |
1049 | (type&16)? ", foreign" : "", | |
1050 | (type&32)? "pass-through" : ""); | |
1051 | printf(" state[%d] : %s%s%s%s%s%s%s\n", i, | |
1052 | (state&1)? "Online": "Offline", | |
1053 | (state&2)? ", Failed": "", | |
1054 | (state&4)? ", Rebuilding": "", | |
1055 | (state&8)? ", in-transition": "", | |
1056 | (state&16)? ", SMART errors": "", | |
1057 | (state&32)? ", Unrecovered Read Errors": "", | |
1058 | (state&64)? ", Missing" : ""); | |
1059 | printf(" Avail Size[%d] : %llu K\n", i, | |
1060 | __be64_to_cpu(pd->config_size)>>1); | |
1061 | for (dl = sb->dlist; dl ; dl = dl->next) { | |
1062 | if (dl->disk.refnum == pd->refnum) { | |
1063 | char *dv = map_dev(dl->major, dl->minor, 0); | |
1064 | if (dv) | |
1065 | printf(" Device[%d] : %s\n", | |
1066 | i, dv); | |
1067 | } | |
1068 | } | |
1069 | printf("\n"); | |
1070 | } | |
1071 | } | |
1072 | ||
1073 | static void examine_super_ddf(struct supertype *st, char *homehost) | |
1074 | { | |
1075 | struct ddf_super *sb = st->sb; | |
1076 | ||
1077 | printf(" Magic : %08x\n", __be32_to_cpu(sb->anchor.magic)); | |
1078 | printf(" Version : %.8s\n", sb->anchor.revision); | |
598f0d58 NB |
1079 | printf("Controller GUID : "); print_guid(sb->controller.guid, 0); |
1080 | printf("\n"); | |
1081 | printf(" Container GUID : "); print_guid(sb->anchor.guid, 1); | |
a322f70c DW |
1082 | printf("\n"); |
1083 | printf(" Seq : %08x\n", __be32_to_cpu(sb->active->seq)); | |
1084 | printf(" Redundant hdr : %s\n", sb->secondary.magic == DDF_HEADER_MAGIC | |
1085 | ?"yes" : "no"); | |
1086 | examine_vds(sb); | |
1087 | examine_pds(sb); | |
1088 | } | |
1089 | ||
1090 | static void brief_examine_super_ddf(struct supertype *st) | |
1091 | { | |
1092 | /* We just write a generic DDF ARRAY entry | |
1093 | * The uuid is all hex, 6 groups of 4 bytes | |
1094 | */ | |
1095 | struct ddf_super *ddf = st->sb; | |
1096 | int i; | |
59e36268 | 1097 | printf("ARRAY /dev/ddf metadata=ddf UUID="); |
a322f70c | 1098 | for (i = 0; i < DDF_GUID_LEN; i++) { |
a322f70c DW |
1099 | if ((i&3) == 0 && i != 0) |
1100 | printf(":"); | |
59e36268 | 1101 | printf("%02X", 255&ddf->anchor.guid[i]); |
a322f70c DW |
1102 | } |
1103 | printf("\n"); | |
1104 | } | |
1105 | ||
1106 | static void detail_super_ddf(struct supertype *st, char *homehost) | |
1107 | { | |
1108 | /* FIXME later | |
1109 | * Could print DDF GUID | |
1110 | * Need to find which array | |
1111 | * If whole, briefly list all arrays | |
1112 | * If one, give name | |
1113 | */ | |
1114 | } | |
1115 | ||
1116 | static void brief_detail_super_ddf(struct supertype *st) | |
1117 | { | |
1118 | /* FIXME I really need to know which array we are detailing. | |
1119 | * Can that be stored in ddf_super?? | |
1120 | */ | |
1121 | // struct ddf_super *ddf = st->sb; | |
1122 | } | |
a322f70c DW |
1123 | #endif |
1124 | ||
1125 | static int match_home_ddf(struct supertype *st, char *homehost) | |
1126 | { | |
1127 | /* It matches 'this' host if the controller is a | |
1128 | * Linux-MD controller with vendor_data matching | |
1129 | * the hostname | |
1130 | */ | |
1131 | struct ddf_super *ddf = st->sb; | |
1132 | int len = strlen(homehost); | |
1133 | ||
1134 | return (memcmp(ddf->controller.guid, T10, 8) == 0 && | |
1135 | len < sizeof(ddf->controller.vendor_data) && | |
1136 | memcmp(ddf->controller.vendor_data, homehost,len) == 0 && | |
1137 | ddf->controller.vendor_data[len] == 0); | |
1138 | } | |
1139 | ||
7a7cc504 | 1140 | static struct vd_config *find_vdcr(struct ddf_super *ddf, int inst) |
a322f70c | 1141 | { |
7a7cc504 | 1142 | struct vcl *v; |
59e36268 | 1143 | |
7a7cc504 | 1144 | for (v = ddf->conflist; v; v = v->next) |
59e36268 | 1145 | if (inst == v->vcnum) |
7a7cc504 NB |
1146 | return &v->conf; |
1147 | return NULL; | |
1148 | } | |
1149 | ||
1150 | static int find_phys(struct ddf_super *ddf, __u32 phys_refnum) | |
1151 | { | |
1152 | /* Find the entry in phys_disk which has the given refnum | |
1153 | * and return it's index | |
1154 | */ | |
1155 | int i; | |
1156 | for (i=0; i < __be16_to_cpu(ddf->phys->max_pdes); i++) | |
1157 | if (ddf->phys->entries[i].refnum == phys_refnum) | |
1158 | return i; | |
1159 | return -1; | |
a322f70c DW |
1160 | } |
1161 | ||
1162 | static void uuid_from_super_ddf(struct supertype *st, int uuid[4]) | |
1163 | { | |
1164 | /* The uuid returned here is used for: | |
1165 | * uuid to put into bitmap file (Create, Grow) | |
1166 | * uuid for backup header when saving critical section (Grow) | |
1167 | * comparing uuids when re-adding a device into an array | |
1168 | * For each of these we can make do with a truncated | |
1169 | * or hashed uuid rather than the original, as long as | |
1170 | * everyone agrees. | |
1171 | * In each case the uuid required is that of the data-array, | |
1172 | * not the device-set. | |
1173 | * In the case of SVD we assume the BVD is of interest, | |
1174 | * though that might be the case if a bitmap were made for | |
1175 | * a mirrored SVD - worry about that later. | |
1176 | * So we need to find the VD configuration record for the | |
1177 | * relevant BVD and extract the GUID and Secondary_Element_Seq. | |
1178 | * The first 16 bytes of the sha1 of these is used. | |
1179 | */ | |
1180 | struct ddf_super *ddf = st->sb; | |
d2ca6449 | 1181 | struct vcl *vcl = ddf->currentconf; |
a322f70c | 1182 | |
d2ca6449 | 1183 | if (!vcl) |
a322f70c DW |
1184 | memset(uuid, 0, sizeof (uuid)); |
1185 | else { | |
1186 | char buf[20]; | |
1187 | struct sha1_ctx ctx; | |
1188 | sha1_init_ctx(&ctx); | |
d2ca6449 NB |
1189 | sha1_process_bytes(&vcl->conf.guid, DDF_GUID_LEN, &ctx); |
1190 | if (vcl->conf.sec_elmnt_count > 1) | |
1191 | sha1_process_bytes(&vcl->conf.sec_elmnt_seq, 1, &ctx); | |
a322f70c DW |
1192 | sha1_finish_ctx(&ctx, buf); |
1193 | memcpy(uuid, buf, sizeof(uuid)); | |
1194 | } | |
1195 | } | |
1196 | ||
78e44928 NB |
1197 | static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info); |
1198 | ||
a322f70c DW |
1199 | static void getinfo_super_ddf(struct supertype *st, struct mdinfo *info) |
1200 | { | |
1201 | struct ddf_super *ddf = st->sb; | |
1202 | ||
78e44928 NB |
1203 | if (ddf->currentconf) { |
1204 | getinfo_super_ddf_bvd(st, info); | |
1205 | return; | |
1206 | } | |
1207 | ||
a322f70c DW |
1208 | info->array.raid_disks = __be16_to_cpu(ddf->phys->used_pdes); |
1209 | info->array.level = LEVEL_CONTAINER; | |
1210 | info->array.layout = 0; | |
1211 | info->array.md_minor = -1; | |
1212 | info->array.ctime = DECADE + __be32_to_cpu(*(__u32*) | |
1213 | (ddf->anchor.guid+16)); | |
1214 | info->array.utime = 0; | |
1215 | info->array.chunk_size = 0; | |
1216 | ||
a322f70c DW |
1217 | |
1218 | info->disk.major = 0; | |
1219 | info->disk.minor = 0; | |
cba0191b NB |
1220 | if (ddf->dlist) { |
1221 | info->disk.number = __be32_to_cpu(ddf->dlist->disk.refnum); | |
59e36268 | 1222 | info->disk.raid_disk = find_phys(ddf, ddf->dlist->disk.refnum); |
d2ca6449 NB |
1223 | |
1224 | info->data_offset = __be64_to_cpu(ddf->phys-> | |
1225 | entries[info->disk.raid_disk]. | |
1226 | config_size); | |
1227 | info->component_size = ddf->dlist->size - info->data_offset; | |
cba0191b NB |
1228 | } else { |
1229 | info->disk.number = -1; | |
1230 | // info->disk.raid_disk = find refnum in the table and use index; | |
1231 | } | |
a19c88b8 NB |
1232 | info->disk.state = (1 << MD_DISK_SYNC); |
1233 | ||
d2ca6449 | 1234 | |
a19c88b8 | 1235 | info->reshape_active = 0; |
a322f70c | 1236 | |
159c3a1a NB |
1237 | strcpy(info->text_version, "ddf"); |
1238 | ||
a322f70c DW |
1239 | // uuid_from_super_ddf(info->uuid, sbv); |
1240 | ||
1241 | // info->name[] ?? ; | |
1242 | } | |
1243 | ||
598f0d58 NB |
1244 | static int rlq_to_layout(int rlq, int prl, int raiddisks); |
1245 | ||
a322f70c DW |
1246 | static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info) |
1247 | { | |
1248 | struct ddf_super *ddf = st->sb; | |
d2ca6449 NB |
1249 | struct vcl *vc = ddf->currentconf; |
1250 | int cd = ddf->currentdev; | |
a322f70c DW |
1251 | |
1252 | /* FIXME this returns BVD info - what if we want SVD ?? */ | |
1253 | ||
d2ca6449 NB |
1254 | info->array.raid_disks = __be16_to_cpu(vc->conf.prim_elmnt_count); |
1255 | info->array.level = map_num1(ddf_level_num, vc->conf.prl); | |
1256 | info->array.layout = rlq_to_layout(vc->conf.rlq, vc->conf.prl, | |
598f0d58 | 1257 | info->array.raid_disks); |
a322f70c | 1258 | info->array.md_minor = -1; |
d2ca6449 NB |
1259 | info->array.ctime = DECADE + |
1260 | __be32_to_cpu(*(__u32*)(vc->conf.guid+16)); | |
1261 | info->array.utime = DECADE + __be32_to_cpu(vc->conf.timestamp); | |
1262 | info->array.chunk_size = 512 << vc->conf.chunk_shift; | |
1263 | ||
1264 | if (cd >= 0 && cd < ddf->mppe) { | |
1265 | info->data_offset = __be64_to_cpu(vc->lba_offset[cd]); | |
1266 | if (vc->block_sizes) | |
1267 | info->component_size = vc->block_sizes[cd]; | |
1268 | else | |
1269 | info->component_size = __be64_to_cpu(vc->conf.blocks); | |
1270 | } | |
a322f70c DW |
1271 | |
1272 | info->disk.major = 0; | |
1273 | info->disk.minor = 0; | |
1274 | // info->disk.number = __be32_to_cpu(ddf->disk.refnum); | |
1275 | // info->disk.raid_disk = find refnum in the table and use index; | |
1276 | // info->disk.state = ???; | |
1277 | ||
80d26cb2 NB |
1278 | info->resync_start = 0; |
1279 | if (!(ddf->virt->entries[info->container_member].state | |
1280 | & DDF_state_inconsistent) && | |
1281 | (ddf->virt->entries[info->container_member].init_state | |
1282 | & DDF_initstate_mask) | |
1283 | == DDF_init_full) | |
1284 | info->resync_start = ~0ULL; | |
1285 | ||
a322f70c DW |
1286 | uuid_from_super_ddf(st, info->uuid); |
1287 | ||
159c3a1a NB |
1288 | sprintf(info->text_version, "/%s/%d", |
1289 | devnum2devname(st->container_dev), | |
1290 | info->container_member); | |
1291 | ||
a322f70c DW |
1292 | // info->name[] ?? ; |
1293 | } | |
1294 | ||
598f0d58 | 1295 | |
a322f70c DW |
1296 | static int update_super_ddf(struct supertype *st, struct mdinfo *info, |
1297 | char *update, | |
1298 | char *devname, int verbose, | |
1299 | int uuid_set, char *homehost) | |
1300 | { | |
1301 | /* For 'assemble' and 'force' we need to return non-zero if any | |
1302 | * change was made. For others, the return value is ignored. | |
1303 | * Update options are: | |
1304 | * force-one : This device looks a bit old but needs to be included, | |
1305 | * update age info appropriately. | |
1306 | * assemble: clear any 'faulty' flag to allow this device to | |
1307 | * be assembled. | |
1308 | * force-array: Array is degraded but being forced, mark it clean | |
1309 | * if that will be needed to assemble it. | |
1310 | * | |
1311 | * newdev: not used ???? | |
1312 | * grow: Array has gained a new device - this is currently for | |
1313 | * linear only | |
1314 | * resync: mark as dirty so a resync will happen. | |
59e36268 | 1315 | * uuid: Change the uuid of the array to match what is given |
a322f70c DW |
1316 | * homehost: update the recorded homehost |
1317 | * name: update the name - preserving the homehost | |
1318 | * _reshape_progress: record new reshape_progress position. | |
1319 | * | |
1320 | * Following are not relevant for this version: | |
1321 | * sparc2.2 : update from old dodgey metadata | |
1322 | * super-minor: change the preferred_minor number | |
1323 | * summaries: update redundant counters. | |
1324 | */ | |
1325 | int rv = 0; | |
1326 | // struct ddf_super *ddf = st->sb; | |
7a7cc504 | 1327 | // struct vd_config *vd = find_vdcr(ddf, info->container_member); |
a322f70c DW |
1328 | // struct virtual_entry *ve = find_ve(ddf); |
1329 | ||
a322f70c DW |
1330 | /* we don't need to handle "force-*" or "assemble" as |
1331 | * there is no need to 'trick' the kernel. We the metadata is | |
1332 | * first updated to activate the array, all the implied modifications | |
1333 | * will just happen. | |
1334 | */ | |
1335 | ||
1336 | if (strcmp(update, "grow") == 0) { | |
1337 | /* FIXME */ | |
1338 | } | |
1339 | if (strcmp(update, "resync") == 0) { | |
1340 | // info->resync_checkpoint = 0; | |
1341 | } | |
1342 | /* We ignore UUID updates as they make even less sense | |
1343 | * with DDF | |
1344 | */ | |
1345 | if (strcmp(update, "homehost") == 0) { | |
1346 | /* homehost is stored in controller->vendor_data, | |
1347 | * or it is when we are the vendor | |
1348 | */ | |
1349 | // if (info->vendor_is_local) | |
1350 | // strcpy(ddf->controller.vendor_data, homehost); | |
1351 | } | |
1352 | if (strcmp(update, "name") == 0) { | |
1353 | /* name is stored in virtual_entry->name */ | |
1354 | // memset(ve->name, ' ', 16); | |
1355 | // strncpy(ve->name, info->name, 16); | |
1356 | } | |
1357 | if (strcmp(update, "_reshape_progress") == 0) { | |
1358 | /* We don't support reshape yet */ | |
1359 | } | |
1360 | ||
1361 | // update_all_csum(ddf); | |
1362 | ||
1363 | return rv; | |
1364 | } | |
1365 | ||
5f8097be NB |
1366 | static void make_header_guid(char *guid) |
1367 | { | |
1368 | __u32 stamp; | |
1369 | int rfd; | |
1370 | /* Create a DDF Header of Virtual Disk GUID */ | |
1371 | ||
1372 | /* 24 bytes of fiction required. | |
1373 | * first 8 are a 'vendor-id' - "Linux-MD" | |
1374 | * next 8 are controller type.. how about 0X DEAD BEEF 0000 0000 | |
1375 | * Remaining 8 random number plus timestamp | |
1376 | */ | |
1377 | memcpy(guid, T10, sizeof(T10)); | |
1378 | stamp = __cpu_to_be32(0xdeadbeef); | |
1379 | memcpy(guid+8, &stamp, 4); | |
1380 | stamp = __cpu_to_be32(0); | |
1381 | memcpy(guid+12, &stamp, 4); | |
1382 | stamp = __cpu_to_be32(time(0) - DECADE); | |
1383 | memcpy(guid+16, &stamp, 4); | |
1384 | rfd = open("/dev/urandom", O_RDONLY); | |
1385 | if (rfd < 0 || read(rfd, &stamp, 4) != 4) | |
1386 | stamp = random(); | |
1387 | memcpy(guid+20, &stamp, 4); | |
1388 | if (rfd >= 0) close(rfd); | |
1389 | } | |
59e36268 | 1390 | |
78e44928 NB |
1391 | static int init_super_ddf_bvd(struct supertype *st, |
1392 | mdu_array_info_t *info, | |
1393 | unsigned long long size, | |
1394 | char *name, char *homehost, | |
1395 | int *uuid); | |
1396 | ||
a322f70c DW |
1397 | static int init_super_ddf(struct supertype *st, |
1398 | mdu_array_info_t *info, | |
1399 | unsigned long long size, char *name, char *homehost, | |
1400 | int *uuid) | |
1401 | { | |
1402 | /* This is primarily called by Create when creating a new array. | |
1403 | * We will then get add_to_super called for each component, and then | |
1404 | * write_init_super called to write it out to each device. | |
1405 | * For DDF, Create can create on fresh devices or on a pre-existing | |
1406 | * array. | |
1407 | * To create on a pre-existing array a different method will be called. | |
1408 | * This one is just for fresh drives. | |
1409 | * | |
1410 | * We need to create the entire 'ddf' structure which includes: | |
1411 | * DDF headers - these are easy. | |
1412 | * Controller data - a Sector describing this controller .. not that | |
1413 | * this is a controller exactly. | |
1414 | * Physical Disk Record - one entry per device, so | |
1415 | * leave plenty of space. | |
1416 | * Virtual Disk Records - again, just leave plenty of space. | |
1417 | * This just lists VDs, doesn't give details | |
1418 | * Config records - describes the VDs that use this disk | |
1419 | * DiskData - describes 'this' device. | |
1420 | * BadBlockManagement - empty | |
1421 | * Diag Space - empty | |
1422 | * Vendor Logs - Could we put bitmaps here? | |
1423 | * | |
1424 | */ | |
1425 | struct ddf_super *ddf; | |
1426 | char hostname[17]; | |
1427 | int hostlen; | |
a322f70c DW |
1428 | int max_phys_disks, max_virt_disks; |
1429 | unsigned long long sector; | |
1430 | int clen; | |
1431 | int i; | |
1432 | int pdsize, vdsize; | |
1433 | struct phys_disk *pd; | |
1434 | struct virtual_disk *vd; | |
1435 | ||
ba7eb04f NB |
1436 | if (!info) { |
1437 | st->sb = NULL; | |
1438 | return 0; | |
1439 | } | |
78e44928 NB |
1440 | if (st->sb) |
1441 | return init_super_ddf_bvd(st, info, size, name, homehost, | |
1442 | uuid); | |
ba7eb04f | 1443 | |
a322f70c | 1444 | ddf = malloc(sizeof(*ddf)); |
6264b437 | 1445 | memset(ddf, 0, sizeof(*ddf)); |
a322f70c DW |
1446 | ddf->dlist = NULL; /* no physical disks yet */ |
1447 | ddf->conflist = NULL; /* No virtual disks yet */ | |
1448 | ||
1449 | /* At least 32MB *must* be reserved for the ddf. So let's just | |
1450 | * start 32MB from the end, and put the primary header there. | |
1451 | * Don't do secondary for now. | |
1452 | * We don't know exactly where that will be yet as it could be | |
1453 | * different on each device. To just set up the lengths. | |
1454 | * | |
1455 | */ | |
1456 | ||
1457 | ddf->anchor.magic = DDF_HEADER_MAGIC; | |
5f8097be | 1458 | make_header_guid(ddf->anchor.guid); |
a322f70c | 1459 | |
59e36268 | 1460 | memcpy(ddf->anchor.revision, DDF_REVISION_2, 8); |
a322f70c DW |
1461 | ddf->anchor.seq = __cpu_to_be32(1); |
1462 | ddf->anchor.timestamp = __cpu_to_be32(time(0) - DECADE); | |
1463 | ddf->anchor.openflag = 0xFF; | |
1464 | ddf->anchor.foreignflag = 0; | |
1465 | ddf->anchor.enforcegroups = 0; /* Is this best?? */ | |
1466 | ddf->anchor.pad0 = 0xff; | |
1467 | memset(ddf->anchor.pad1, 0xff, 12); | |
1468 | memset(ddf->anchor.header_ext, 0xff, 32); | |
1469 | ddf->anchor.primary_lba = ~(__u64)0; | |
1470 | ddf->anchor.secondary_lba = ~(__u64)0; | |
1471 | ddf->anchor.type = DDF_HEADER_ANCHOR; | |
1472 | memset(ddf->anchor.pad2, 0xff, 3); | |
1473 | ddf->anchor.workspace_len = __cpu_to_be32(32768); /* Must be reserved */ | |
1474 | ddf->anchor.workspace_lba = ~(__u64)0; /* Put this at bottom | |
1475 | of 32M reserved.. */ | |
1476 | max_phys_disks = 1023; /* Should be enough */ | |
1477 | ddf->anchor.max_pd_entries = __cpu_to_be16(max_phys_disks); | |
1478 | max_virt_disks = 255; | |
1479 | ddf->anchor.max_vd_entries = __cpu_to_be16(max_virt_disks); /* ?? */ | |
1480 | ddf->anchor.max_partitions = __cpu_to_be16(64); /* ?? */ | |
1481 | ddf->max_part = 64; | |
8c3b8c2c | 1482 | ddf->mppe = 256; |
59e36268 NB |
1483 | ddf->conf_rec_len = 1 + ROUND_UP(ddf->mppe * (4+8), 512)/512; |
1484 | ddf->anchor.config_record_len = __cpu_to_be16(ddf->conf_rec_len); | |
1485 | ddf->anchor.max_primary_element_entries = __cpu_to_be16(ddf->mppe); | |
a322f70c | 1486 | memset(ddf->anchor.pad3, 0xff, 54); |
a322f70c DW |
1487 | /* controller sections is one sector long immediately |
1488 | * after the ddf header */ | |
1489 | sector = 1; | |
1490 | ddf->anchor.controller_section_offset = __cpu_to_be32(sector); | |
1491 | ddf->anchor.controller_section_length = __cpu_to_be32(1); | |
1492 | sector += 1; | |
1493 | ||
1494 | /* phys is 8 sectors after that */ | |
1495 | pdsize = ROUND_UP(sizeof(struct phys_disk) + | |
1496 | sizeof(struct phys_disk_entry)*max_phys_disks, | |
1497 | 512); | |
1498 | switch(pdsize/512) { | |
1499 | case 2: case 8: case 32: case 128: case 512: break; | |
1500 | default: abort(); | |
1501 | } | |
1502 | ddf->anchor.phys_section_offset = __cpu_to_be32(sector); | |
1503 | ddf->anchor.phys_section_length = | |
1504 | __cpu_to_be32(pdsize/512); /* max_primary_element_entries/8 */ | |
1505 | sector += pdsize/512; | |
1506 | ||
1507 | /* virt is another 32 sectors */ | |
1508 | vdsize = ROUND_UP(sizeof(struct virtual_disk) + | |
1509 | sizeof(struct virtual_entry) * max_virt_disks, | |
1510 | 512); | |
1511 | switch(vdsize/512) { | |
1512 | case 2: case 8: case 32: case 128: case 512: break; | |
1513 | default: abort(); | |
1514 | } | |
1515 | ddf->anchor.virt_section_offset = __cpu_to_be32(sector); | |
1516 | ddf->anchor.virt_section_length = | |
1517 | __cpu_to_be32(vdsize/512); /* max_vd_entries/8 */ | |
1518 | sector += vdsize/512; | |
1519 | ||
59e36268 | 1520 | clen = ddf->conf_rec_len * (ddf->max_part+1); |
a322f70c DW |
1521 | ddf->anchor.config_section_offset = __cpu_to_be32(sector); |
1522 | ddf->anchor.config_section_length = __cpu_to_be32(clen); | |
1523 | sector += clen; | |
1524 | ||
1525 | ddf->anchor.data_section_offset = __cpu_to_be32(sector); | |
1526 | ddf->anchor.data_section_length = __cpu_to_be32(1); | |
1527 | sector += 1; | |
1528 | ||
1529 | ddf->anchor.bbm_section_length = __cpu_to_be32(0); | |
1530 | ddf->anchor.bbm_section_offset = __cpu_to_be32(0xFFFFFFFF); | |
1531 | ddf->anchor.diag_space_length = __cpu_to_be32(0); | |
1532 | ddf->anchor.diag_space_offset = __cpu_to_be32(0xFFFFFFFF); | |
1533 | ddf->anchor.vendor_length = __cpu_to_be32(0); | |
1534 | ddf->anchor.vendor_offset = __cpu_to_be32(0xFFFFFFFF); | |
1535 | ||
1536 | memset(ddf->anchor.pad4, 0xff, 256); | |
1537 | ||
1538 | memcpy(&ddf->primary, &ddf->anchor, 512); | |
1539 | memcpy(&ddf->secondary, &ddf->anchor, 512); | |
1540 | ||
1541 | ddf->primary.openflag = 1; /* I guess.. */ | |
1542 | ddf->primary.type = DDF_HEADER_PRIMARY; | |
1543 | ||
1544 | ddf->secondary.openflag = 1; /* I guess.. */ | |
1545 | ddf->secondary.type = DDF_HEADER_SECONDARY; | |
1546 | ||
1547 | ddf->active = &ddf->primary; | |
1548 | ||
1549 | ddf->controller.magic = DDF_CONTROLLER_MAGIC; | |
1550 | ||
1551 | /* 24 more bytes of fiction required. | |
1552 | * first 8 are a 'vendor-id' - "Linux-MD" | |
1553 | * Remaining 16 are serial number.... maybe a hostname would do? | |
1554 | */ | |
1555 | memcpy(ddf->controller.guid, T10, sizeof(T10)); | |
1ba6bff9 DW |
1556 | gethostname(hostname, sizeof(hostname)); |
1557 | hostname[sizeof(hostname) - 1] = 0; | |
a322f70c DW |
1558 | hostlen = strlen(hostname); |
1559 | memcpy(ddf->controller.guid + 24 - hostlen, hostname, hostlen); | |
1560 | for (i = strlen(T10) ; i+hostlen < 24; i++) | |
1561 | ddf->controller.guid[i] = ' '; | |
1562 | ||
1563 | ddf->controller.type.vendor_id = __cpu_to_be16(0xDEAD); | |
1564 | ddf->controller.type.device_id = __cpu_to_be16(0xBEEF); | |
1565 | ddf->controller.type.sub_vendor_id = 0; | |
1566 | ddf->controller.type.sub_device_id = 0; | |
1567 | memcpy(ddf->controller.product_id, "What Is My PID??", 16); | |
1568 | memset(ddf->controller.pad, 0xff, 8); | |
1569 | memset(ddf->controller.vendor_data, 0xff, 448); | |
1570 | ||
1571 | pd = ddf->phys = malloc(pdsize); | |
1572 | ddf->pdsize = pdsize; | |
1573 | ||
1574 | memset(pd, 0xff, pdsize); | |
1575 | memset(pd, 0, sizeof(*pd)); | |
1576 | pd->magic = DDF_PHYS_DATA_MAGIC; | |
1577 | pd->used_pdes = __cpu_to_be16(0); | |
1578 | pd->max_pdes = __cpu_to_be16(max_phys_disks); | |
1579 | memset(pd->pad, 0xff, 52); | |
1580 | ||
1581 | vd = ddf->virt = malloc(vdsize); | |
1582 | ddf->vdsize = vdsize; | |
1583 | memset(vd, 0, vdsize); | |
1584 | vd->magic = DDF_VIRT_RECORDS_MAGIC; | |
1585 | vd->populated_vdes = __cpu_to_be16(0); | |
1586 | vd->max_vdes = __cpu_to_be16(max_virt_disks); | |
1587 | memset(vd->pad, 0xff, 52); | |
1588 | ||
5f8097be NB |
1589 | for (i=0; i<max_virt_disks; i++) |
1590 | memset(&vd->entries[i], 0xff, sizeof(struct virtual_entry)); | |
1591 | ||
a322f70c DW |
1592 | st->sb = ddf; |
1593 | return 1; | |
1594 | } | |
1595 | ||
5f8097be NB |
1596 | static int all_ff(char *guid) |
1597 | { | |
1598 | int i; | |
1599 | for (i = 0; i < DDF_GUID_LEN; i++) | |
1600 | if (guid[i] != (char)0xff) | |
1601 | return 0; | |
1602 | return 1; | |
1603 | } | |
1604 | static int chunk_to_shift(int chunksize) | |
1605 | { | |
1606 | return ffs(chunksize/512)-1; | |
1607 | } | |
1608 | ||
1609 | static int level_to_prl(int level) | |
1610 | { | |
1611 | switch (level) { | |
1612 | case LEVEL_LINEAR: return DDF_CONCAT; | |
1613 | case 0: return DDF_RAID0; | |
1614 | case 1: return DDF_RAID1; | |
1615 | case 4: return DDF_RAID4; | |
1616 | case 5: return DDF_RAID5; | |
1617 | case 6: return DDF_RAID6; | |
1618 | default: return -1; | |
1619 | } | |
1620 | } | |
1621 | static int layout_to_rlq(int level, int layout, int raiddisks) | |
1622 | { | |
1623 | switch(level) { | |
1624 | case 0: | |
1625 | return DDF_RAID0_SIMPLE; | |
1626 | case 1: | |
1627 | switch(raiddisks) { | |
1628 | case 2: return DDF_RAID1_SIMPLE; | |
1629 | case 3: return DDF_RAID1_MULTI; | |
1630 | default: return -1; | |
1631 | } | |
1632 | case 4: | |
1633 | switch(layout) { | |
1634 | case 0: return DDF_RAID4_N; | |
1635 | } | |
1636 | break; | |
1637 | case 5: | |
1638 | case 6: | |
1639 | switch(layout) { | |
1640 | case ALGORITHM_LEFT_ASYMMETRIC: | |
1641 | return DDF_RAID5_N_RESTART; | |
1642 | case ALGORITHM_RIGHT_ASYMMETRIC: | |
59e36268 NB |
1643 | if (level == 5) |
1644 | return DDF_RAID5_0_RESTART; | |
1645 | else | |
1646 | return DDF_RAID6_0_RESTART; | |
5f8097be NB |
1647 | case ALGORITHM_LEFT_SYMMETRIC: |
1648 | return DDF_RAID5_N_CONTINUE; | |
1649 | case ALGORITHM_RIGHT_SYMMETRIC: | |
1650 | return -1; /* not mentioned in standard */ | |
1651 | } | |
1652 | } | |
1653 | return -1; | |
1654 | } | |
1655 | ||
598f0d58 NB |
1656 | static int rlq_to_layout(int rlq, int prl, int raiddisks) |
1657 | { | |
1658 | switch(prl) { | |
1659 | case DDF_RAID0: | |
1660 | return 0; /* hopefully rlq == DDF_RAID0_SIMPLE */ | |
1661 | case DDF_RAID1: | |
1662 | return 0; /* hopefully rlq == SIMPLE or MULTI depending | |
1663 | on raiddisks*/ | |
1664 | case DDF_RAID4: | |
1665 | switch(rlq) { | |
1666 | case DDF_RAID4_N: | |
1667 | return 0; | |
1668 | default: | |
1669 | /* not supported */ | |
1670 | return -1; /* FIXME this isn't checked */ | |
1671 | } | |
1672 | case DDF_RAID5: | |
598f0d58 NB |
1673 | switch(rlq) { |
1674 | case DDF_RAID5_N_RESTART: | |
1675 | return ALGORITHM_LEFT_ASYMMETRIC; | |
1676 | case DDF_RAID5_0_RESTART: | |
1677 | return ALGORITHM_RIGHT_ASYMMETRIC; | |
1678 | case DDF_RAID5_N_CONTINUE: | |
1679 | return ALGORITHM_LEFT_SYMMETRIC; | |
1680 | default: | |
1681 | return -1; | |
1682 | } | |
59e36268 NB |
1683 | case DDF_RAID6: |
1684 | switch(rlq) { | |
1685 | case DDF_RAID5_N_RESTART: | |
1686 | return ALGORITHM_LEFT_ASYMMETRIC; | |
1687 | case DDF_RAID6_0_RESTART: | |
1688 | return ALGORITHM_RIGHT_ASYMMETRIC; | |
1689 | case DDF_RAID5_N_CONTINUE: | |
1690 | return ALGORITHM_LEFT_SYMMETRIC; | |
1691 | default: | |
1692 | return -1; | |
1693 | } | |
598f0d58 NB |
1694 | } |
1695 | return -1; | |
1696 | } | |
1697 | ||
59e36268 NB |
1698 | struct extent { |
1699 | unsigned long long start, size; | |
1700 | }; | |
78e44928 | 1701 | static int cmp_extent(const void *av, const void *bv) |
59e36268 NB |
1702 | { |
1703 | const struct extent *a = av; | |
1704 | const struct extent *b = bv; | |
1705 | if (a->start < b->start) | |
1706 | return -1; | |
1707 | if (a->start > b->start) | |
1708 | return 1; | |
1709 | return 0; | |
1710 | } | |
1711 | ||
78e44928 | 1712 | static struct extent *get_extents(struct ddf_super *ddf, struct dl *dl) |
59e36268 NB |
1713 | { |
1714 | /* find a list of used extents on the give physical device | |
1715 | * (dnum) of the given ddf. | |
1716 | * Return a malloced array of 'struct extent' | |
1717 | ||
1718 | FIXME ignore DDF_Legacy devices? | |
1719 | ||
1720 | */ | |
1721 | struct extent *rv; | |
1722 | int n = 0; | |
1723 | int i, j; | |
1724 | ||
1725 | rv = malloc(sizeof(struct extent) * (ddf->max_part + 2)); | |
1726 | if (!rv) | |
1727 | return NULL; | |
1728 | ||
1729 | for (i = 0; i < ddf->max_part; i++) { | |
1730 | struct vcl *v = dl->vlist[i]; | |
1731 | if (v == NULL) | |
1732 | continue; | |
1733 | for (j=0; j < v->conf.prim_elmnt_count; j++) | |
1734 | if (v->conf.phys_refnum[j] == dl->disk.refnum) { | |
1735 | /* This device plays role 'j' in 'v'. */ | |
1736 | rv[n].start = __be64_to_cpu(v->lba_offset[j]); | |
1737 | rv[n].size = __be64_to_cpu(v->conf.blocks); | |
1738 | n++; | |
1739 | break; | |
1740 | } | |
1741 | } | |
1742 | qsort(rv, n, sizeof(*rv), cmp_extent); | |
1743 | ||
1744 | rv[n].start = __be64_to_cpu(ddf->phys->entries[dl->pdnum].config_size); | |
1745 | rv[n].size = 0; | |
1746 | return rv; | |
1747 | } | |
1748 | ||
5f8097be NB |
1749 | static int init_super_ddf_bvd(struct supertype *st, |
1750 | mdu_array_info_t *info, | |
1751 | unsigned long long size, | |
1752 | char *name, char *homehost, | |
1753 | int *uuid) | |
1754 | { | |
1755 | /* We are creating a BVD inside a pre-existing container. | |
1756 | * so st->sb is already set. | |
1757 | * We need to create a new vd_config and a new virtual_entry | |
1758 | */ | |
1759 | struct ddf_super *ddf = st->sb; | |
1760 | int venum; | |
1761 | struct virtual_entry *ve; | |
1762 | struct vcl *vcl; | |
1763 | struct vd_config *vc; | |
5f8097be NB |
1764 | |
1765 | if (__be16_to_cpu(ddf->virt->populated_vdes) | |
1766 | >= __be16_to_cpu(ddf->virt->max_vdes)) { | |
1767 | fprintf(stderr, Name": This ddf already has the " | |
1768 | "maximum of %d virtual devices\n", | |
1769 | __be16_to_cpu(ddf->virt->max_vdes)); | |
1770 | return 0; | |
1771 | } | |
1772 | ||
1773 | for (venum = 0; venum < __be16_to_cpu(ddf->virt->max_vdes); venum++) | |
1774 | if (all_ff(ddf->virt->entries[venum].guid)) | |
1775 | break; | |
1776 | if (venum == __be16_to_cpu(ddf->virt->max_vdes)) { | |
1777 | fprintf(stderr, Name ": Cannot find spare slot for " | |
1778 | "virtual disk - DDF is corrupt\n"); | |
1779 | return 0; | |
1780 | } | |
1781 | ve = &ddf->virt->entries[venum]; | |
1782 | ||
1783 | /* A Virtual Disk GUID contains the T10 Vendor ID, controller type, | |
1784 | * timestamp, random number | |
1785 | */ | |
1786 | make_header_guid(ve->guid); | |
1787 | ve->unit = __cpu_to_be16(info->md_minor); | |
1788 | ve->pad0 = 0xFFFF; | |
1789 | ve->guid_crc = crc32(0, (unsigned char*)ddf->anchor.guid, DDF_GUID_LEN); | |
1790 | ve->type = 0; | |
7a7cc504 NB |
1791 | ve->state = DDF_state_degraded; /* Will be modified as devices are added */ |
1792 | if (info->state & 1) /* clean */ | |
1793 | ve->init_state = DDF_init_full; | |
1794 | else | |
1795 | ve->init_state = DDF_init_not; | |
1796 | ||
5f8097be NB |
1797 | memset(ve->pad1, 0xff, 14); |
1798 | memset(ve->name, ' ', 16); | |
1799 | if (name) | |
1800 | strncpy(ve->name, name, 16); | |
1801 | ddf->virt->populated_vdes = | |
1802 | __cpu_to_be16(__be16_to_cpu(ddf->virt->populated_vdes)+1); | |
1803 | ||
1804 | /* Now create a new vd_config */ | |
8c3b8c2c NB |
1805 | vcl = malloc(offsetof(struct vcl, conf) + ddf->conf_rec_len * 512); |
1806 | vcl->lba_offset = (__u64*) &vcl->conf.phys_refnum[ddf->mppe]; | |
59e36268 | 1807 | vcl->vcnum = venum; |
f7e7067b | 1808 | sprintf(st->subarray, "%d", venum); |
59e36268 | 1809 | vcl->block_sizes = NULL; /* FIXME not for CONCAT */ |
5f8097be NB |
1810 | |
1811 | vc = &vcl->conf; | |
1812 | ||
1813 | vc->magic = DDF_VD_CONF_MAGIC; | |
1814 | memcpy(vc->guid, ve->guid, DDF_GUID_LEN); | |
1815 | vc->timestamp = __cpu_to_be32(time(0)-DECADE); | |
1816 | vc->seqnum = __cpu_to_be32(1); | |
1817 | memset(vc->pad0, 0xff, 24); | |
1818 | vc->prim_elmnt_count = __cpu_to_be16(info->raid_disks); | |
1819 | vc->chunk_shift = chunk_to_shift(info->chunk_size); | |
1820 | vc->prl = level_to_prl(info->level); | |
1821 | vc->rlq = layout_to_rlq(info->level, info->layout, info->raid_disks); | |
1822 | vc->sec_elmnt_count = 1; | |
1823 | vc->sec_elmnt_seq = 0; | |
1824 | vc->srl = 0; | |
1825 | vc->blocks = __cpu_to_be64(info->size * 2); | |
1826 | vc->array_blocks = __cpu_to_be64( | |
1827 | calc_array_size(info->level, info->raid_disks, info->layout, | |
1828 | info->chunk_size, info->size*2)); | |
1829 | memset(vc->pad1, 0xff, 8); | |
1830 | vc->spare_refs[0] = 0xffffffff; | |
1831 | vc->spare_refs[1] = 0xffffffff; | |
1832 | vc->spare_refs[2] = 0xffffffff; | |
1833 | vc->spare_refs[3] = 0xffffffff; | |
1834 | vc->spare_refs[4] = 0xffffffff; | |
1835 | vc->spare_refs[5] = 0xffffffff; | |
1836 | vc->spare_refs[6] = 0xffffffff; | |
1837 | vc->spare_refs[7] = 0xffffffff; | |
1838 | memset(vc->cache_pol, 0, 8); | |
1839 | vc->bg_rate = 0x80; | |
1840 | memset(vc->pad2, 0xff, 3); | |
1841 | memset(vc->pad3, 0xff, 52); | |
1842 | memset(vc->pad4, 0xff, 192); | |
1843 | memset(vc->v0, 0xff, 32); | |
1844 | memset(vc->v1, 0xff, 32); | |
1845 | memset(vc->v2, 0xff, 16); | |
1846 | memset(vc->v3, 0xff, 16); | |
1847 | memset(vc->vendor, 0xff, 32); | |
598f0d58 | 1848 | |
8c3b8c2c NB |
1849 | memset(vc->phys_refnum, 0xff, 4*ddf->mppe); |
1850 | memset(vc->phys_refnum+(ddf->mppe * 4), 0x00, 8*ddf->mppe); | |
5f8097be NB |
1851 | |
1852 | vcl->next = ddf->conflist; | |
1853 | ddf->conflist = vcl; | |
d2ca6449 | 1854 | ddf->currentconf = vcl; |
5f8097be NB |
1855 | return 1; |
1856 | } | |
1857 | ||
1858 | static void add_to_super_ddf_bvd(struct supertype *st, | |
1859 | mdu_disk_info_t *dk, int fd, char *devname) | |
1860 | { | |
1861 | /* fd and devname identify a device with-in the ddf container (st). | |
1862 | * dk identifies a location in the new BVD. | |
1863 | * We need to find suitable free space in that device and update | |
1864 | * the phys_refnum and lba_offset for the newly created vd_config. | |
1865 | * We might also want to update the type in the phys_disk | |
5575e7d9 | 1866 | * section. |
5f8097be NB |
1867 | */ |
1868 | struct dl *dl; | |
1869 | struct ddf_super *ddf = st->sb; | |
1870 | struct vd_config *vc; | |
1871 | __u64 *lba_offset; | |
7a7cc504 | 1872 | int working; |
5575e7d9 | 1873 | int i; |
59e36268 NB |
1874 | unsigned long long blocks, pos, esize; |
1875 | struct extent *ex; | |
5f8097be NB |
1876 | |
1877 | for (dl = ddf->dlist; dl ; dl = dl->next) | |
1878 | if (dl->major == dk->major && | |
1879 | dl->minor == dk->minor) | |
1880 | break; | |
1881 | if (!dl || ! (dk->state & (1<<MD_DISK_SYNC))) | |
1882 | return; | |
1883 | ||
d2ca6449 NB |
1884 | vc = &ddf->currentconf->conf; |
1885 | lba_offset = ddf->currentconf->lba_offset; | |
59e36268 NB |
1886 | |
1887 | ex = get_extents(ddf, dl); | |
1888 | if (!ex) | |
1889 | return; | |
1890 | ||
1891 | i = 0; pos = 0; | |
1892 | blocks = __be64_to_cpu(vc->blocks); | |
d2ca6449 NB |
1893 | if (ddf->currentconf->block_sizes) |
1894 | blocks = ddf->currentconf->block_sizes[dk->raid_disk]; | |
59e36268 NB |
1895 | |
1896 | do { | |
1897 | esize = ex[i].start - pos; | |
1898 | if (esize >= blocks) | |
1899 | break; | |
1900 | pos = ex[i].start + ex[i].size; | |
1901 | i++; | |
1902 | } while (ex[i-1].size); | |
1903 | ||
1904 | free(ex); | |
1905 | if (esize < blocks) | |
1906 | return; | |
1907 | ||
d2ca6449 | 1908 | ddf->currentdev = dk->raid_disk; |
5f8097be | 1909 | vc->phys_refnum[dk->raid_disk] = dl->disk.refnum; |
59e36268 | 1910 | lba_offset[dk->raid_disk] = __cpu_to_be64(pos); |
5f8097be | 1911 | |
5575e7d9 NB |
1912 | for (i=0; i < ddf->max_part ; i++) |
1913 | if (dl->vlist[i] == NULL) | |
1914 | break; | |
1915 | if (i == ddf->max_part) | |
1916 | return; | |
d2ca6449 | 1917 | dl->vlist[i] = ddf->currentconf; |
5f8097be NB |
1918 | |
1919 | dl->fd = fd; | |
1920 | dl->devname = devname; | |
7a7cc504 NB |
1921 | |
1922 | /* Check how many working raid_disks, and if we can mark | |
1923 | * array as optimal yet | |
1924 | */ | |
1925 | working = 0; | |
5575e7d9 | 1926 | |
7a7cc504 NB |
1927 | for (i=0; i < __be16_to_cpu(vc->prim_elmnt_count); i++) |
1928 | if (vc->phys_refnum[i] != 0xffffffff) | |
1929 | working++; | |
59e36268 | 1930 | |
5575e7d9 | 1931 | /* Find which virtual_entry */ |
d2ca6449 | 1932 | i = ddf->currentconf->vcnum; |
7a7cc504 | 1933 | if (working == __be16_to_cpu(vc->prim_elmnt_count)) |
5575e7d9 NB |
1934 | ddf->virt->entries[i].state = |
1935 | (ddf->virt->entries[i].state & ~DDF_state_mask) | |
7a7cc504 NB |
1936 | | DDF_state_optimal; |
1937 | ||
1938 | if (vc->prl == DDF_RAID6 && | |
1939 | working+1 == __be16_to_cpu(vc->prim_elmnt_count)) | |
5575e7d9 NB |
1940 | ddf->virt->entries[i].state = |
1941 | (ddf->virt->entries[i].state & ~DDF_state_mask) | |
7a7cc504 | 1942 | | DDF_state_part_optimal; |
5575e7d9 NB |
1943 | |
1944 | ddf->phys->entries[dl->pdnum].type &= ~__cpu_to_be16(DDF_Global_Spare); | |
1945 | ddf->phys->entries[dl->pdnum].type |= __cpu_to_be16(DDF_Active_in_VD); | |
5f8097be NB |
1946 | } |
1947 | ||
a322f70c DW |
1948 | /* add a device to a container, either while creating it or while |
1949 | * expanding a pre-existing container | |
1950 | */ | |
1951 | static void add_to_super_ddf(struct supertype *st, | |
1952 | mdu_disk_info_t *dk, int fd, char *devname) | |
1953 | { | |
1954 | struct ddf_super *ddf = st->sb; | |
1955 | struct dl *dd; | |
1956 | time_t now; | |
1957 | struct tm *tm; | |
1958 | unsigned long long size; | |
1959 | struct phys_disk_entry *pde; | |
1960 | int n, i; | |
1961 | struct stat stb; | |
1962 | ||
78e44928 NB |
1963 | if (ddf->currentconf) { |
1964 | add_to_super_ddf_bvd(st, dk, fd, devname); | |
1965 | return; | |
1966 | } | |
1967 | ||
a322f70c DW |
1968 | /* This is device numbered dk->number. We need to create |
1969 | * a phys_disk entry and a more detailed disk_data entry. | |
1970 | */ | |
1971 | fstat(fd, &stb); | |
b2280677 | 1972 | dd = malloc(sizeof(*dd) + sizeof(dd->vlist[0]) * ddf->max_part); |
a322f70c DW |
1973 | dd->major = major(stb.st_rdev); |
1974 | dd->minor = minor(stb.st_rdev); | |
1975 | dd->devname = devname; | |
1976 | dd->next = ddf->dlist; | |
1977 | dd->fd = fd; | |
b2280677 | 1978 | dd->spare = NULL; |
a322f70c DW |
1979 | |
1980 | dd->disk.magic = DDF_PHYS_DATA_MAGIC; | |
1981 | now = time(0); | |
1982 | tm = localtime(&now); | |
1983 | sprintf(dd->disk.guid, "%8s%04d%02d%02d", | |
1984 | T10, tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday); | |
1985 | *(__u32*)(dd->disk.guid + 16) = random(); | |
1986 | *(__u32*)(dd->disk.guid + 20) = random(); | |
1987 | ||
59e36268 NB |
1988 | do { |
1989 | /* Cannot be bothered finding a CRC of some irrelevant details*/ | |
1990 | dd->disk.refnum = random(); | |
1991 | for (i = __be16_to_cpu(ddf->active->max_pd_entries) - 1; | |
1992 | i >= 0; i--) | |
1993 | if (ddf->phys->entries[i].refnum == dd->disk.refnum) | |
1994 | break; | |
1995 | } while (i >= 0); | |
1996 | ||
a322f70c DW |
1997 | dd->disk.forced_ref = 1; |
1998 | dd->disk.forced_guid = 1; | |
1999 | memset(dd->disk.vendor, ' ', 32); | |
2000 | memcpy(dd->disk.vendor, "Linux", 5); | |
2001 | memset(dd->disk.pad, 0xff, 442); | |
b2280677 | 2002 | for (i = 0; i < ddf->max_part ; i++) |
a322f70c DW |
2003 | dd->vlist[i] = NULL; |
2004 | ||
2005 | n = __be16_to_cpu(ddf->phys->used_pdes); | |
2006 | pde = &ddf->phys->entries[n]; | |
5575e7d9 NB |
2007 | dd->pdnum = n; |
2008 | ||
a322f70c DW |
2009 | n++; |
2010 | ddf->phys->used_pdes = __cpu_to_be16(n); | |
2011 | ||
2012 | memcpy(pde->guid, dd->disk.guid, DDF_GUID_LEN); | |
2013 | pde->refnum = dd->disk.refnum; | |
5575e7d9 | 2014 | pde->type = __cpu_to_be16(DDF_Forced_PD_GUID | DDF_Global_Spare); |
a322f70c DW |
2015 | pde->state = __cpu_to_be16(DDF_Online); |
2016 | get_dev_size(fd, NULL, &size); | |
2017 | /* We are required to reserve 32Meg, and record the size in sectors */ | |
2018 | pde->config_size = __cpu_to_be64( (size - 32*1024*1024) / 512); | |
2019 | sprintf(pde->path, "%17.17s","Information: nil") ; | |
2020 | memset(pde->pad, 0xff, 6); | |
2021 | ||
d2ca6449 | 2022 | dd->size = size >> 9; |
a322f70c DW |
2023 | ddf->dlist = dd; |
2024 | } | |
2025 | ||
2026 | /* | |
2027 | * This is the write_init_super method for a ddf container. It is | |
2028 | * called when creating a container or adding another device to a | |
2029 | * container. | |
2030 | */ | |
2031 | ||
2032 | #ifndef MDASSEMBLE | |
7a7cc504 | 2033 | static int __write_init_super_ddf(struct supertype *st, int do_close) |
a322f70c DW |
2034 | { |
2035 | ||
2036 | struct ddf_super *ddf = st->sb; | |
2037 | int i; | |
2038 | struct dl *d; | |
2039 | int n_config; | |
2040 | int conf_size; | |
2041 | ||
2042 | unsigned long long size, sector; | |
2043 | ||
2044 | for (d = ddf->dlist; d; d=d->next) { | |
2045 | int fd = d->fd; | |
2046 | ||
2047 | if (fd < 0) | |
2048 | continue; | |
2049 | ||
2050 | /* We need to fill in the primary, (secondary) and workspace | |
2051 | * lba's in the headers, set their checksums, | |
2052 | * Also checksum phys, virt.... | |
2053 | * | |
2054 | * Then write everything out, finally the anchor is written. | |
2055 | */ | |
2056 | get_dev_size(fd, NULL, &size); | |
2057 | size /= 512; | |
2058 | ddf->anchor.workspace_lba = __cpu_to_be64(size - 32*1024*2); | |
2059 | ddf->anchor.primary_lba = __cpu_to_be64(size - 16*1024*2); | |
2060 | ddf->anchor.seq = __cpu_to_be32(1); | |
2061 | memcpy(&ddf->primary, &ddf->anchor, 512); | |
2062 | memcpy(&ddf->secondary, &ddf->anchor, 512); | |
2063 | ||
2064 | ddf->anchor.openflag = 0xFF; /* 'open' means nothing */ | |
2065 | ddf->anchor.seq = 0xFFFFFFFF; /* no sequencing in anchor */ | |
2066 | ddf->anchor.crc = calc_crc(&ddf->anchor, 512); | |
2067 | ||
2068 | ddf->primary.openflag = 0; | |
2069 | ddf->primary.type = DDF_HEADER_PRIMARY; | |
2070 | ||
2071 | ddf->secondary.openflag = 0; | |
2072 | ddf->secondary.type = DDF_HEADER_SECONDARY; | |
2073 | ||
2074 | ddf->primary.crc = calc_crc(&ddf->primary, 512); | |
2075 | ddf->secondary.crc = calc_crc(&ddf->secondary, 512); | |
2076 | ||
2077 | sector = size - 16*1024*2; | |
2078 | lseek64(fd, sector<<9, 0); | |
2079 | write(fd, &ddf->primary, 512); | |
2080 | ||
2081 | ddf->controller.crc = calc_crc(&ddf->controller, 512); | |
2082 | write(fd, &ddf->controller, 512); | |
2083 | ||
2084 | ddf->phys->crc = calc_crc(ddf->phys, ddf->pdsize); | |
2085 | ||
2086 | write(fd, ddf->phys, ddf->pdsize); | |
2087 | ||
2088 | ddf->virt->crc = calc_crc(ddf->virt, ddf->vdsize); | |
2089 | write(fd, ddf->virt, ddf->vdsize); | |
2090 | ||
2091 | /* Now write lots of config records. */ | |
8c3b8c2c NB |
2092 | n_config = ddf->max_part; |
2093 | conf_size = ddf->conf_rec_len * 512; | |
a322f70c DW |
2094 | for (i = 0 ; i <= n_config ; i++) { |
2095 | struct vcl *c = d->vlist[i]; | |
b2280677 NB |
2096 | if (i == n_config) |
2097 | c = (struct vcl*)d->spare; | |
a322f70c DW |
2098 | |
2099 | if (c) { | |
2100 | c->conf.crc = calc_crc(&c->conf, conf_size); | |
2101 | write(fd, &c->conf, conf_size); | |
2102 | } else { | |
2103 | __u32 sig = 0xffffffff; | |
2104 | write(fd, &sig, 4); | |
2105 | lseek64(fd, conf_size-4, SEEK_CUR); | |
2106 | } | |
2107 | } | |
2108 | d->disk.crc = calc_crc(&d->disk, 512); | |
2109 | write(fd, &d->disk, 512); | |
2110 | ||
2111 | /* Maybe do the same for secondary */ | |
2112 | ||
2113 | lseek64(fd, (size-1)*512, SEEK_SET); | |
2114 | write(fd, &ddf->anchor, 512); | |
7a7cc504 NB |
2115 | if (do_close) { |
2116 | close(fd); | |
2117 | d->fd = -1; | |
2118 | } | |
a322f70c DW |
2119 | } |
2120 | return 1; | |
2121 | } | |
7a7cc504 NB |
2122 | |
2123 | static int write_init_super_ddf(struct supertype *st) | |
2124 | { | |
2125 | return __write_init_super_ddf(st, 1); | |
2126 | } | |
2127 | ||
a322f70c DW |
2128 | #endif |
2129 | ||
2130 | static __u64 avail_size_ddf(struct supertype *st, __u64 devsize) | |
2131 | { | |
2132 | /* We must reserve the last 32Meg */ | |
2133 | if (devsize <= 32*1024*2) | |
2134 | return 0; | |
2135 | return devsize - 32*1024*2; | |
2136 | } | |
2137 | ||
2138 | #ifndef MDASSEMBLE | |
78e44928 NB |
2139 | static int validate_geometry_ddf_container(struct supertype *st, |
2140 | int level, int layout, int raiddisks, | |
2141 | int chunk, unsigned long long size, | |
2142 | char *dev, unsigned long long *freesize); | |
2143 | ||
2144 | static int validate_geometry_ddf_bvd(struct supertype *st, | |
2145 | int level, int layout, int raiddisks, | |
2146 | int chunk, unsigned long long size, | |
2147 | char *dev, unsigned long long *freesize); | |
2148 | ||
2149 | static int validate_geometry_ddf(struct supertype *st, | |
a322f70c DW |
2150 | int level, int layout, int raiddisks, |
2151 | int chunk, unsigned long long size, | |
2152 | char *dev, unsigned long long *freesize) | |
2153 | { | |
2154 | int fd; | |
2155 | struct mdinfo *sra; | |
2156 | int cfd; | |
2157 | ||
2158 | /* ddf potentially supports lots of things, but it depends on | |
2159 | * what devices are offered (and maybe kernel version?) | |
2160 | * If given unused devices, we will make a container. | |
2161 | * If given devices in a container, we will make a BVD. | |
2162 | * If given BVDs, we make an SVD, changing all the GUIDs in the process. | |
2163 | */ | |
2164 | ||
2165 | if (level == LEVEL_CONTAINER) { | |
78e44928 NB |
2166 | /* Must be a fresh device to add to a container */ |
2167 | return validate_geometry_ddf_container(st, level, layout, | |
2168 | raiddisks, | |
2169 | chunk, size, dev, freesize); | |
5f8097be NB |
2170 | } |
2171 | ||
2172 | if (st->sb) { | |
78e44928 NB |
2173 | /* A container has already been opened, so we are |
2174 | * creating in there. Maybe a BVD, maybe an SVD. | |
2175 | * Should make a distinction one day. | |
2176 | */ | |
2177 | return validate_geometry_ddf_bvd(st, level, layout, raiddisks, | |
a322f70c DW |
2178 | chunk, size, dev, freesize); |
2179 | } | |
78e44928 NB |
2180 | if (!dev) { |
2181 | /* Initial sanity check. Exclude illegal levels. */ | |
2182 | int i; | |
2183 | for (i=0; ddf_level_num[i].num1 != MAXINT; i++) | |
2184 | if (ddf_level_num[i].num2 == level) | |
2185 | break; | |
2186 | if (ddf_level_num[i].num1 == MAXINT) | |
2187 | return 0; | |
2188 | /* Should check layout? etc */ | |
a322f70c | 2189 | return 1; |
78e44928 | 2190 | } |
a322f70c | 2191 | |
78e44928 NB |
2192 | /* This is the first device for the array. |
2193 | * If it is a container, we read it in and do automagic allocations, | |
2194 | * no other devices should be given. | |
2195 | * Otherwise it must be a member device of a container, and we | |
2196 | * do manual allocation. | |
2197 | * Later we should check for a BVD and make an SVD. | |
a322f70c | 2198 | */ |
a322f70c DW |
2199 | fd = open(dev, O_RDONLY|O_EXCL, 0); |
2200 | if (fd >= 0) { | |
2201 | sra = sysfs_read(fd, 0, GET_VERSION); | |
2202 | close(fd); | |
2203 | if (sra && sra->array.major_version == -1 && | |
78e44928 NB |
2204 | strcmp(sra->text_version, "ddf") == 0) { |
2205 | ||
2206 | /* load super */ | |
2207 | /* find space for 'n' devices. */ | |
2208 | /* remember the devices */ | |
2209 | /* Somehow return the fact that we have enough */ | |
a322f70c DW |
2210 | } |
2211 | ||
2212 | fprintf(stderr, | |
2213 | Name ": Cannot create this array on device %s\n", | |
2214 | dev); | |
2215 | return 0; | |
2216 | } | |
2217 | if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) { | |
2218 | fprintf(stderr, Name ": Cannot open %s: %s\n", | |
2219 | dev, strerror(errno)); | |
2220 | return 0; | |
2221 | } | |
2222 | /* Well, it is in use by someone, maybe a 'ddf' container. */ | |
2223 | cfd = open_container(fd); | |
2224 | if (cfd < 0) { | |
2225 | close(fd); | |
2226 | fprintf(stderr, Name ": Cannot use %s: It is busy\n", | |
2227 | dev); | |
2228 | return 0; | |
2229 | } | |
2230 | sra = sysfs_read(cfd, 0, GET_VERSION); | |
2231 | close(fd); | |
2232 | if (sra && sra->array.major_version == -1 && | |
2233 | strcmp(sra->text_version, "ddf") == 0) { | |
2234 | /* This is a member of a ddf container. Load the container | |
2235 | * and try to create a bvd | |
2236 | */ | |
2237 | struct ddf_super *ddf; | |
a322f70c | 2238 | if (load_super_ddf_all(st, cfd, (void **)&ddf, NULL, 1) == 0) { |
5f8097be | 2239 | st->sb = ddf; |
2f6079dc | 2240 | st->container_dev = fd2devnum(cfd); |
a322f70c | 2241 | close(cfd); |
78e44928 | 2242 | return validate_geometry_ddf_bvd(st, level, layout, |
a322f70c DW |
2243 | raiddisks, chunk, size, |
2244 | dev, freesize); | |
2245 | } | |
2246 | close(cfd); | |
c42ec1ed DW |
2247 | } else /* device may belong to a different container */ |
2248 | return 0; | |
2249 | ||
a322f70c DW |
2250 | return 1; |
2251 | } | |
2252 | ||
78e44928 NB |
2253 | static int validate_geometry_ddf_container(struct supertype *st, |
2254 | int level, int layout, int raiddisks, | |
2255 | int chunk, unsigned long long size, | |
2256 | char *dev, unsigned long long *freesize) | |
a322f70c DW |
2257 | { |
2258 | int fd; | |
2259 | unsigned long long ldsize; | |
2260 | ||
2261 | if (level != LEVEL_CONTAINER) | |
2262 | return 0; | |
2263 | if (!dev) | |
2264 | return 1; | |
2265 | ||
2266 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
2267 | if (fd < 0) { | |
2268 | fprintf(stderr, Name ": Cannot open %s: %s\n", | |
2269 | dev, strerror(errno)); | |
2270 | return 0; | |
2271 | } | |
2272 | if (!get_dev_size(fd, dev, &ldsize)) { | |
2273 | close(fd); | |
2274 | return 0; | |
2275 | } | |
2276 | close(fd); | |
2277 | ||
56aca704 | 2278 | *freesize = avail_size_ddf(st, ldsize >> 9); |
a322f70c DW |
2279 | |
2280 | return 1; | |
2281 | } | |
2282 | ||
78e44928 NB |
2283 | static int validate_geometry_ddf_bvd(struct supertype *st, |
2284 | int level, int layout, int raiddisks, | |
2285 | int chunk, unsigned long long size, | |
2286 | char *dev, unsigned long long *freesize) | |
a322f70c DW |
2287 | { |
2288 | struct stat stb; | |
2289 | struct ddf_super *ddf = st->sb; | |
2290 | struct dl *dl; | |
5f8097be NB |
2291 | unsigned long long pos = 0; |
2292 | unsigned long long maxsize; | |
2293 | struct extent *e; | |
2294 | int i; | |
a322f70c DW |
2295 | /* ddf/bvd supports lots of things, but not containers */ |
2296 | if (level == LEVEL_CONTAINER) | |
2297 | return 0; | |
2298 | /* We must have the container info already read in. */ | |
2299 | if (!ddf) | |
2300 | return 0; | |
2301 | ||
5f8097be NB |
2302 | if (!dev) { |
2303 | /* General test: make sure there is space for | |
2304 | * 'raiddisks' device extents of size 'size'. | |
2305 | */ | |
2306 | unsigned long long minsize = size; | |
2307 | int dcnt = 0; | |
2308 | if (minsize == 0) | |
2309 | minsize = 8; | |
2310 | for (dl = ddf->dlist; dl ; dl = dl->next) | |
2311 | { | |
2312 | int found = 0; | |
7e1432fb | 2313 | pos = 0; |
5f8097be NB |
2314 | |
2315 | i = 0; | |
2316 | e = get_extents(ddf, dl); | |
2317 | if (!e) continue; | |
2318 | do { | |
2319 | unsigned long long esize; | |
2320 | esize = e[i].start - pos; | |
2321 | if (esize >= minsize) | |
2322 | found = 1; | |
2323 | pos = e[i].start + e[i].size; | |
2324 | i++; | |
2325 | } while (e[i-1].size); | |
2326 | if (found) | |
2327 | dcnt++; | |
2328 | free(e); | |
2329 | } | |
2330 | if (dcnt < raiddisks) { | |
2331 | fprintf(stderr, Name ": Not enough devices with space " | |
2332 | "for this array (%d < %d)\n", | |
2333 | dcnt, raiddisks); | |
2334 | return 0; | |
2335 | } | |
2336 | return 1; | |
2337 | } | |
a322f70c DW |
2338 | /* This device must be a member of the set */ |
2339 | if (stat(dev, &stb) < 0) | |
2340 | return 0; | |
2341 | if ((S_IFMT & stb.st_mode) != S_IFBLK) | |
2342 | return 0; | |
2343 | for (dl = ddf->dlist ; dl ; dl = dl->next) { | |
2344 | if (dl->major == major(stb.st_rdev) && | |
2345 | dl->minor == minor(stb.st_rdev)) | |
2346 | break; | |
2347 | } | |
5f8097be NB |
2348 | if (!dl) { |
2349 | fprintf(stderr, Name ": %s is not in the same DDF set\n", | |
2350 | dev); | |
2351 | return 0; | |
2352 | } | |
2353 | e = get_extents(ddf, dl); | |
2354 | maxsize = 0; | |
2355 | i = 0; | |
2356 | if (e) do { | |
2357 | unsigned long long esize; | |
2358 | esize = e[i].start - pos; | |
2359 | if (esize >= maxsize) | |
2360 | maxsize = esize; | |
2361 | pos = e[i].start + e[i].size; | |
2362 | i++; | |
2363 | } while (e[i-1].size); | |
2364 | *freesize = maxsize; | |
a322f70c DW |
2365 | // FIXME here I am |
2366 | ||
2367 | return 1; | |
2368 | } | |
59e36268 | 2369 | |
a322f70c DW |
2370 | static int load_super_ddf_all(struct supertype *st, int fd, |
2371 | void **sbp, char *devname, int keep_fd) | |
2372 | { | |
2373 | struct mdinfo *sra; | |
2374 | struct ddf_super *super; | |
2375 | struct mdinfo *sd, *best = NULL; | |
2376 | int bestseq = 0; | |
2377 | int seq; | |
2378 | char nm[20]; | |
2379 | int dfd; | |
2380 | ||
2381 | sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE); | |
2382 | if (!sra) | |
2383 | return 1; | |
2384 | if (sra->array.major_version != -1 || | |
2385 | sra->array.minor_version != -2 || | |
2386 | strcmp(sra->text_version, "ddf") != 0) | |
2387 | return 1; | |
2388 | ||
2389 | super = malloc(sizeof(*super)); | |
2390 | if (!super) | |
2391 | return 1; | |
a2349791 | 2392 | memset(super, 0, sizeof(*super)); |
a322f70c DW |
2393 | |
2394 | /* first, try each device, and choose the best ddf */ | |
2395 | for (sd = sra->devs ; sd ; sd = sd->next) { | |
2396 | int rv; | |
2397 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
7a7cc504 NB |
2398 | dfd = dev_open(nm, O_RDONLY); |
2399 | if (dfd < 0) | |
a322f70c DW |
2400 | return 2; |
2401 | rv = load_ddf_headers(dfd, super, NULL); | |
7a7cc504 | 2402 | close(dfd); |
a322f70c DW |
2403 | if (rv == 0) { |
2404 | seq = __be32_to_cpu(super->active->seq); | |
2405 | if (super->active->openflag) | |
2406 | seq--; | |
2407 | if (!best || seq > bestseq) { | |
2408 | bestseq = seq; | |
2409 | best = sd; | |
2410 | } | |
2411 | } | |
2412 | } | |
2413 | if (!best) | |
2414 | return 1; | |
2415 | /* OK, load this ddf */ | |
2416 | sprintf(nm, "%d:%d", best->disk.major, best->disk.minor); | |
2417 | dfd = dev_open(nm, O_RDONLY); | |
7a7cc504 | 2418 | if (dfd < 0) |
a322f70c DW |
2419 | return 1; |
2420 | load_ddf_headers(dfd, super, NULL); | |
2421 | load_ddf_global(dfd, super, NULL); | |
2422 | close(dfd); | |
2423 | /* Now we need the device-local bits */ | |
2424 | for (sd = sra->devs ; sd ; sd = sd->next) { | |
2425 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
5f8097be | 2426 | dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY); |
7a7cc504 | 2427 | if (dfd < 0) |
a322f70c DW |
2428 | return 2; |
2429 | seq = load_ddf_local(dfd, super, NULL, keep_fd); | |
5f8097be | 2430 | if (!keep_fd) close(dfd); |
a322f70c | 2431 | } |
f7e7067b NB |
2432 | if (st->subarray[0]) { |
2433 | struct vcl *v; | |
2434 | ||
2435 | for (v = super->conflist; v; v = v->next) | |
2436 | if (v->vcnum == atoi(st->subarray)) | |
d2ca6449 NB |
2437 | super->currentconf = v; |
2438 | if (!super->currentconf) | |
f7e7067b NB |
2439 | return 1; |
2440 | } | |
a322f70c DW |
2441 | *sbp = super; |
2442 | if (st->ss == NULL) { | |
78e44928 | 2443 | st->ss = &super_ddf; |
a322f70c DW |
2444 | st->minor_version = 0; |
2445 | st->max_devs = 512; | |
75aa18b5 | 2446 | st->container_dev = fd2devnum(fd); |
a322f70c DW |
2447 | } |
2448 | return 0; | |
2449 | } | |
2450 | #endif | |
2451 | ||
598f0d58 NB |
2452 | static struct mdinfo *container_content_ddf(struct supertype *st) |
2453 | { | |
2454 | /* Given a container loaded by load_super_ddf_all, | |
2455 | * extract information about all the arrays into | |
2456 | * an mdinfo tree. | |
2457 | * | |
2458 | * For each vcl in conflist: create an mdinfo, fill it in, | |
2459 | * then look for matching devices (phys_refnum) in dlist | |
2460 | * and create appropriate device mdinfo. | |
2461 | */ | |
2462 | struct ddf_super *ddf = st->sb; | |
2463 | struct mdinfo *rest = NULL; | |
2464 | struct vcl *vc; | |
2465 | ||
2466 | for (vc = ddf->conflist ; vc ; vc=vc->next) | |
2467 | { | |
598f0d58 NB |
2468 | int i; |
2469 | struct mdinfo *this; | |
2470 | this = malloc(sizeof(*this)); | |
2471 | memset(this, 0, sizeof(*this)); | |
2472 | this->next = rest; | |
2473 | rest = this; | |
2474 | ||
598f0d58 NB |
2475 | this->array.level = map_num1(ddf_level_num, vc->conf.prl); |
2476 | this->array.raid_disks = | |
2477 | __be16_to_cpu(vc->conf.prim_elmnt_count); | |
60f18132 NB |
2478 | this->array.layout = rlq_to_layout(vc->conf.rlq, vc->conf.prl, |
2479 | this->array.raid_disks); | |
598f0d58 NB |
2480 | this->array.md_minor = -1; |
2481 | this->array.ctime = DECADE + | |
2482 | __be32_to_cpu(*(__u32*)(vc->conf.guid+16)); | |
2483 | this->array.utime = DECADE + | |
2484 | __be32_to_cpu(vc->conf.timestamp); | |
2485 | this->array.chunk_size = 512 << vc->conf.chunk_shift; | |
2486 | ||
59e36268 | 2487 | i = vc->vcnum; |
7a7cc504 NB |
2488 | if ((ddf->virt->entries[i].state & DDF_state_inconsistent) || |
2489 | (ddf->virt->entries[i].init_state & DDF_initstate_mask) != | |
ed9d66aa | 2490 | DDF_init_full) { |
598f0d58 | 2491 | this->array.state = 0; |
ed9d66aa NB |
2492 | this->resync_start = 0; |
2493 | } else { | |
598f0d58 | 2494 | this->array.state = 1; |
ed9d66aa NB |
2495 | this->resync_start = ~0ULL; |
2496 | } | |
598f0d58 NB |
2497 | memcpy(this->name, ddf->virt->entries[i].name, 32); |
2498 | this->name[33]=0; | |
2499 | ||
2500 | memset(this->uuid, 0, sizeof(this->uuid)); | |
2501 | this->component_size = __be64_to_cpu(vc->conf.blocks); | |
2502 | this->array.size = this->component_size / 2; | |
5f2aace8 | 2503 | this->container_member = i; |
598f0d58 | 2504 | |
60f18132 NB |
2505 | sprintf(this->text_version, "/%s/%d", |
2506 | devnum2devname(st->container_dev), | |
2507 | this->container_member); | |
2508 | ||
8c3b8c2c | 2509 | for (i=0 ; i < ddf->mppe ; i++) { |
598f0d58 NB |
2510 | struct mdinfo *dev; |
2511 | struct dl *d; | |
2512 | ||
2513 | if (vc->conf.phys_refnum[i] == 0xFFFFFFFF) | |
2514 | continue; | |
2515 | ||
2516 | this->array.working_disks++; | |
2517 | ||
2518 | for (d = ddf->dlist; d ; d=d->next) | |
2519 | if (d->disk.refnum == vc->conf.phys_refnum[i]) | |
2520 | break; | |
2521 | if (d == NULL) | |
2522 | break; | |
2523 | ||
2524 | dev = malloc(sizeof(*dev)); | |
2525 | memset(dev, 0, sizeof(*dev)); | |
2526 | dev->next = this->devs; | |
2527 | this->devs = dev; | |
2528 | ||
2529 | dev->disk.number = __be32_to_cpu(d->disk.refnum); | |
2530 | dev->disk.major = d->major; | |
2531 | dev->disk.minor = d->minor; | |
2532 | dev->disk.raid_disk = i; | |
2533 | dev->disk.state = (1<<MD_DISK_SYNC)|(1<<MD_DISK_ACTIVE); | |
2534 | ||
2535 | dev->events = __le32_to_cpu(ddf->primary.seq); | |
2536 | dev->data_offset = vc->lba_offset[i]; | |
2537 | dev->component_size = __be64_to_cpu(vc->conf.blocks); | |
2538 | if (d->devname) | |
2539 | strcpy(dev->name, d->devname); | |
2540 | } | |
2541 | } | |
2542 | return rest; | |
2543 | } | |
2544 | ||
a322f70c DW |
2545 | static int store_zero_ddf(struct supertype *st, int fd) |
2546 | { | |
2547 | unsigned long long dsize; | |
2548 | char buf[512]; | |
2549 | memset(buf, 0, 512); | |
2550 | ||
a322f70c DW |
2551 | if (!get_dev_size(fd, NULL, &dsize)) |
2552 | return 1; | |
2553 | ||
2554 | lseek64(fd, dsize-512, 0); | |
2555 | write(fd, buf, 512); | |
2556 | return 0; | |
2557 | } | |
2558 | ||
a19c88b8 NB |
2559 | static int compare_super_ddf(struct supertype *st, struct supertype *tst) |
2560 | { | |
2561 | /* | |
2562 | * return: | |
2563 | * 0 same, or first was empty, and second was copied | |
2564 | * 1 second had wrong number | |
2565 | * 2 wrong uuid | |
2566 | * 3 wrong other info | |
2567 | */ | |
2568 | struct ddf_super *first = st->sb; | |
2569 | struct ddf_super *second = tst->sb; | |
2570 | ||
2571 | if (!first) { | |
2572 | st->sb = tst->sb; | |
2573 | tst->sb = NULL; | |
2574 | return 0; | |
2575 | } | |
2576 | ||
2577 | if (memcmp(first->anchor.guid, second->anchor.guid, DDF_GUID_LEN) != 0) | |
2578 | return 2; | |
2579 | ||
2580 | /* FIXME should I look at anything else? */ | |
2581 | return 0; | |
2582 | } | |
2583 | ||
4e5528c6 NB |
2584 | /* |
2585 | * A new array 'a' has been started which claims to be instance 'inst' | |
2586 | * within container 'c'. | |
2587 | * We need to confirm that the array matches the metadata in 'c' so | |
2588 | * that we don't corrupt any metadata. | |
2589 | */ | |
cba0191b | 2590 | static int ddf_open_new(struct supertype *c, struct active_array *a, char *inst) |
549e9569 | 2591 | { |
cba0191b NB |
2592 | fprintf(stderr, "ddf: open_new %s\n", inst); |
2593 | a->info.container_member = atoi(inst); | |
549e9569 NB |
2594 | return 0; |
2595 | } | |
2596 | ||
4e5528c6 NB |
2597 | /* |
2598 | * The array 'a' is to be marked clean in the metadata. | |
ed9d66aa | 2599 | * If '->resync_start' is not ~(unsigned long long)0, then the array is only |
4e5528c6 NB |
2600 | * clean up to the point (in sectors). If that cannot be recorded in the |
2601 | * metadata, then leave it as dirty. | |
2602 | * | |
2603 | * For DDF, we need to clear the DDF_state_inconsistent bit in the | |
2604 | * !global! virtual_disk.virtual_entry structure. | |
2605 | */ | |
ed9d66aa | 2606 | static void ddf_set_array_state(struct active_array *a, int consistent) |
549e9569 | 2607 | { |
4e5528c6 NB |
2608 | struct ddf_super *ddf = a->container->sb; |
2609 | int inst = a->info.container_member; | |
ed9d66aa NB |
2610 | if (consistent) |
2611 | ddf->virt->entries[inst].state &= ~DDF_state_inconsistent; | |
2612 | else | |
4e5528c6 | 2613 | ddf->virt->entries[inst].state |= DDF_state_inconsistent; |
ed9d66aa NB |
2614 | ddf->virt->entries[inst].init_state &= ~DDF_initstate_mask; |
2615 | if (a->resync_start == ~0ULL) | |
2616 | ddf->virt->entries[inst].init_state |= DDF_init_full; | |
2617 | else if (a->resync_start == 0) | |
2618 | ddf->virt->entries[inst].init_state |= DDF_init_not; | |
4e5528c6 | 2619 | else |
ed9d66aa NB |
2620 | ddf->virt->entries[inst].init_state |= DDF_init_quick; |
2621 | ||
2622 | printf("ddf mark %s %llu\n", consistent?"clean":"dirty", | |
2623 | a->resync_start); | |
fd7cde1b DW |
2624 | } |
2625 | ||
7a7cc504 NB |
2626 | /* |
2627 | * The state of each disk is stored in the global phys_disk structure | |
2628 | * in phys_disk.entries[n].state. | |
2629 | * This makes various combinations awkward. | |
2630 | * - When a device fails in any array, it must be failed in all arrays | |
2631 | * that include a part of this device. | |
2632 | * - When a component is rebuilding, we cannot include it officially in the | |
2633 | * array unless this is the only array that uses the device. | |
2634 | * | |
2635 | * So: when transitioning: | |
2636 | * Online -> failed, just set failed flag. monitor will propagate | |
2637 | * spare -> online, the device might need to be added to the array. | |
2638 | * spare -> failed, just set failed. Don't worry if in array or not. | |
2639 | */ | |
8d45d196 | 2640 | static void ddf_set_disk(struct active_array *a, int n, int state) |
549e9569 | 2641 | { |
7a7cc504 NB |
2642 | struct ddf_super *ddf = a->container->sb; |
2643 | int inst = a->info.container_member; | |
2644 | struct vd_config *vc = find_vdcr(ddf, inst); | |
2645 | int pd = find_phys(ddf, vc->phys_refnum[n]); | |
2646 | int i, st, working; | |
2647 | ||
2648 | if (vc == NULL) { | |
2649 | fprintf(stderr, "ddf: cannot find instance %d!!\n", inst); | |
2650 | return; | |
2651 | } | |
2652 | if (pd < 0) { | |
2653 | /* disk doesn't currently exist. If it is now in_sync, | |
2654 | * insert it. */ | |
2655 | if ((state & DS_INSYNC) && ! (state & DS_FAULTY)) { | |
2656 | /* Find dev 'n' in a->info->devs, determine the | |
2657 | * ddf refnum, and set vc->phys_refnum and update | |
2658 | * phys->entries[] | |
2659 | */ | |
2660 | /* FIXME */ | |
2661 | } | |
2662 | } else { | |
2663 | if (state & DS_FAULTY) | |
2664 | ddf->phys->entries[pd].state |= __cpu_to_be16(DDF_Failed); | |
2665 | if (state & DS_INSYNC) { | |
2666 | ddf->phys->entries[pd].state |= __cpu_to_be16(DDF_Online); | |
2667 | ddf->phys->entries[pd].state &= __cpu_to_be16(~DDF_Rebuilding); | |
2668 | } | |
2669 | } | |
2670 | ||
7e1432fb NB |
2671 | fprintf(stderr, "ddf: set_disk %d to %x\n", n, state); |
2672 | ||
7a7cc504 NB |
2673 | /* Now we need to check the state of the array and update |
2674 | * virtual_disk.entries[n].state. | |
2675 | * It needs to be one of "optimal", "degraded", "failed". | |
2676 | * I don't understand 'deleted' or 'missing'. | |
2677 | */ | |
2678 | working = 0; | |
2679 | for (i=0; i < a->info.array.raid_disks; i++) { | |
2680 | pd = find_phys(ddf, vc->phys_refnum[i]); | |
2681 | if (pd < 0) | |
2682 | continue; | |
57632f4a NB |
2683 | st = __be16_to_cpu(ddf->phys->entries[pd].state); |
2684 | if ((st & (DDF_Online|DDF_Failed|DDF_Rebuilding)) | |
7a7cc504 NB |
2685 | == DDF_Online) |
2686 | working++; | |
2687 | } | |
2688 | state = DDF_state_degraded; | |
2689 | if (working == a->info.array.raid_disks) | |
2690 | state = DDF_state_optimal; | |
2691 | else switch(vc->prl) { | |
2692 | case DDF_RAID0: | |
2693 | case DDF_CONCAT: | |
2694 | case DDF_JBOD: | |
2695 | state = DDF_state_failed; | |
2696 | break; | |
2697 | case DDF_RAID1: | |
2698 | if (working == 0) | |
2699 | state = DDF_state_failed; | |
2700 | break; | |
2701 | case DDF_RAID4: | |
2702 | case DDF_RAID5: | |
2703 | if (working < a->info.array.raid_disks-1) | |
2704 | state = DDF_state_failed; | |
2705 | break; | |
2706 | case DDF_RAID6: | |
2707 | if (working < a->info.array.raid_disks-2) | |
2708 | state = DDF_state_failed; | |
2709 | else if (working == a->info.array.raid_disks-1) | |
2710 | state = DDF_state_part_optimal; | |
2711 | break; | |
2712 | } | |
2713 | ||
2714 | ddf->virt->entries[inst].state = | |
2715 | (ddf->virt->entries[inst].state & ~DDF_state_mask) | |
2716 | | state; | |
2717 | ||
549e9569 NB |
2718 | } |
2719 | ||
2e735d19 | 2720 | static void ddf_sync_metadata(struct supertype *st) |
549e9569 | 2721 | { |
7a7cc504 NB |
2722 | |
2723 | /* | |
2724 | * Write all data to all devices. | |
2725 | * Later, we might be able to track whether only local changes | |
2726 | * have been made, or whether any global data has been changed, | |
2727 | * but ddf is sufficiently weird that it probably always | |
2728 | * changes global data .... | |
2729 | */ | |
2e735d19 | 2730 | __write_init_super_ddf(st, 0); |
549e9569 NB |
2731 | fprintf(stderr, "ddf: sync_metadata\n"); |
2732 | } | |
2733 | ||
88c164f4 NB |
2734 | static void ddf_process_update(struct supertype *st, |
2735 | struct metadata_update *update) | |
2736 | { | |
2737 | /* Apply this update to the metadata. | |
2738 | * The first 4 bytes are a DDF_*_MAGIC which guides | |
2739 | * our actions. | |
2740 | * Possible update are: | |
2741 | * DDF_PHYS_RECORDS_MAGIC | |
2742 | * Add a new physical device. Changes to this record | |
2743 | * only happen implicitly. | |
2744 | * used_pdes is the device number. | |
2745 | * DDF_VIRT_RECORDS_MAGIC | |
2746 | * Add a new VD. Possibly also change the 'access' bits. | |
2747 | * populated_vdes is the entry number. | |
2748 | * DDF_VD_CONF_MAGIC | |
2749 | * New or updated VD. the VIRT_RECORD must already | |
2750 | * exist. For an update, phys_refnum and lba_offset | |
2751 | * (at least) are updated, and the VD_CONF must | |
2752 | * be written to precisely those devices listed with | |
2753 | * a phys_refnum. | |
2754 | * DDF_SPARE_ASSIGN_MAGIC | |
2755 | * replacement Spare Assignment Record... but for which device? | |
2756 | * | |
2757 | * So, e.g.: | |
2758 | * - to create a new array, we send a VIRT_RECORD and | |
2759 | * a VD_CONF. Then assemble and start the array. | |
2760 | * - to activate a spare we send a VD_CONF to add the phys_refnum | |
2761 | * and offset. This will also mark the spare as active with | |
2762 | * a spare-assignment record. | |
2763 | */ | |
2764 | struct ddf_super *ddf = st->sb; | |
2765 | __u32 *magic = (__u32*)update->buf; | |
2766 | struct phys_disk *pd; | |
2767 | struct virtual_disk *vd; | |
2768 | struct vd_config *vc; | |
2769 | struct vcl *vcl; | |
2770 | struct dl *dl; | |
2771 | int mppe; | |
2772 | int ent; | |
2773 | ||
7e1432fb NB |
2774 | printf("Process update %x\n", *magic); |
2775 | ||
88c164f4 NB |
2776 | switch (*magic) { |
2777 | case DDF_PHYS_RECORDS_MAGIC: | |
2778 | ||
2779 | if (update->len != (sizeof(struct phys_disk) + | |
2780 | sizeof(struct phys_disk_entry))) | |
2781 | return; | |
2782 | pd = (struct phys_disk*)update->buf; | |
2783 | ||
2784 | ent = __be16_to_cpu(pd->used_pdes); | |
2785 | if (ent >= __be16_to_cpu(ddf->phys->max_pdes)) | |
2786 | return; | |
2787 | if (!all_ff(ddf->phys->entries[ent].guid)) | |
2788 | return; | |
2789 | ddf->phys->entries[ent] = pd->entries[0]; | |
2790 | ddf->phys->used_pdes = __cpu_to_be16(1 + | |
2791 | __be16_to_cpu(ddf->phys->used_pdes)); | |
2792 | break; | |
2793 | ||
2794 | case DDF_VIRT_RECORDS_MAGIC: | |
2795 | ||
2796 | if (update->len != (sizeof(struct virtual_disk) + | |
2797 | sizeof(struct virtual_entry))) | |
2798 | return; | |
2799 | vd = (struct virtual_disk*)update->buf; | |
2800 | ||
2801 | ent = __be16_to_cpu(vd->populated_vdes); | |
2802 | if (ent >= __be16_to_cpu(ddf->virt->max_vdes)) | |
2803 | return; | |
2804 | if (!all_ff(ddf->virt->entries[ent].guid)) | |
2805 | return; | |
2806 | ddf->virt->entries[ent] = vd->entries[0]; | |
2807 | ddf->virt->populated_vdes = __cpu_to_be16(1 + | |
2808 | __be16_to_cpu(ddf->virt->populated_vdes)); | |
2809 | break; | |
2810 | ||
2811 | case DDF_VD_CONF_MAGIC: | |
7e1432fb | 2812 | printf("len %d %d\n", update->len, ddf->conf_rec_len); |
88c164f4 NB |
2813 | |
2814 | mppe = __be16_to_cpu(ddf->anchor.max_primary_element_entries); | |
2815 | if (update->len != ddf->conf_rec_len) | |
2816 | return; | |
2817 | vc = (struct vd_config*)update->buf; | |
2818 | for (vcl = ddf->conflist; vcl ; vcl = vcl->next) | |
2819 | if (memcmp(vcl->conf.guid, vc->guid, DDF_GUID_LEN) == 0) | |
2820 | break; | |
7e1432fb | 2821 | printf("vcl = %p\n", vcl); |
88c164f4 NB |
2822 | if (vcl) { |
2823 | /* An update, just copy the phys_refnum and lba_offset | |
2824 | * fields | |
2825 | */ | |
2826 | memcpy(vcl->conf.phys_refnum, vc->phys_refnum, | |
2827 | mppe * (sizeof(__u32) + sizeof(__u64))); | |
2828 | } else { | |
2829 | /* A new VD_CONF */ | |
2830 | vcl = update->space; | |
2831 | update->space = NULL; | |
2832 | vcl->next = ddf->conflist; | |
2833 | vcl->conf = *vc; | |
2834 | vcl->lba_offset = (__u64*) | |
2835 | &vcl->conf.phys_refnum[mppe]; | |
2836 | ddf->conflist = vcl; | |
2837 | } | |
2838 | /* Now make sure vlist is correct for each dl. */ | |
2839 | for (dl = ddf->dlist; dl; dl = dl->next) { | |
2840 | int dn; | |
2841 | int vn = 0; | |
2842 | for (vcl = ddf->conflist; vcl ; vcl = vcl->next) | |
2843 | for (dn=0; dn < ddf->mppe ; dn++) | |
2844 | if (vcl->conf.phys_refnum[dn] == | |
2845 | dl->disk.refnum) { | |
7e1432fb NB |
2846 | printf("dev %d has %p at %d\n", |
2847 | dl->pdnum, vcl, vn); | |
88c164f4 NB |
2848 | dl->vlist[vn++] = vcl; |
2849 | break; | |
2850 | } | |
2851 | while (vn < ddf->max_part) | |
2852 | dl->vlist[vn++] = NULL; | |
7e1432fb NB |
2853 | if (dl->vlist[0]) { |
2854 | ddf->phys->entries[dl->pdnum].type &= | |
2855 | ~__cpu_to_be16(DDF_Global_Spare); | |
2856 | ddf->phys->entries[dl->pdnum].type |= | |
2857 | __cpu_to_be16(DDF_Active_in_VD); | |
2858 | } | |
2859 | if (dl->spare) { | |
2860 | ddf->phys->entries[dl->pdnum].type &= | |
2861 | ~__cpu_to_be16(DDF_Global_Spare); | |
2862 | ddf->phys->entries[dl->pdnum].type |= | |
2863 | __cpu_to_be16(DDF_Spare); | |
2864 | } | |
2865 | if (!dl->vlist[0] && !dl->spare) { | |
2866 | ddf->phys->entries[dl->pdnum].type |= | |
2867 | __cpu_to_be16(DDF_Global_Spare); | |
2868 | ddf->phys->entries[dl->pdnum].type &= | |
2869 | ~__cpu_to_be16(DDF_Spare | | |
2870 | DDF_Active_in_VD); | |
2871 | } | |
88c164f4 NB |
2872 | } |
2873 | break; | |
2874 | case DDF_SPARE_ASSIGN_MAGIC: | |
2875 | default: break; | |
2876 | } | |
2877 | } | |
2878 | ||
7e1432fb NB |
2879 | /* |
2880 | * Check if the array 'a' is degraded but not failed. | |
2881 | * If it is, find as many spares as are available and needed and | |
2882 | * arrange for their inclusion. | |
2883 | * We only choose devices which are not already in the array, | |
2884 | * and prefer those with a spare-assignment to this array. | |
2885 | * otherwise we choose global spares - assuming always that | |
2886 | * there is enough room. | |
2887 | * For each spare that we assign, we return an 'mdinfo' which | |
2888 | * describes the position for the device in the array. | |
2889 | * We also add to 'updates' a DDF_VD_CONF_MAGIC update with | |
2890 | * the new phys_refnum and lba_offset values. | |
2891 | * | |
2892 | * Only worry about BVDs at the moment. | |
2893 | */ | |
2894 | static struct mdinfo *ddf_activate_spare(struct active_array *a, | |
2895 | struct metadata_update **updates) | |
2896 | { | |
2897 | int working = 0; | |
2898 | struct mdinfo *d; | |
2899 | struct ddf_super *ddf = a->container->sb; | |
2900 | int global_ok = 0; | |
2901 | struct mdinfo *rv = NULL; | |
2902 | struct mdinfo *di; | |
2903 | struct metadata_update *mu; | |
2904 | struct dl *dl; | |
2905 | int i; | |
2906 | struct vd_config *vc; | |
2907 | __u64 *lba; | |
2908 | ||
7e1432fb NB |
2909 | for (d = a->info.devs ; d ; d = d->next) { |
2910 | if ((d->curr_state & DS_FAULTY) && | |
2911 | d->state_fd >= 0) | |
2912 | /* wait for Removal to happen */ | |
2913 | return NULL; | |
2914 | if (d->state_fd >= 0) | |
2915 | working ++; | |
2916 | } | |
2917 | ||
2918 | printf("ddf_activate: working=%d (%d) level=%d\n", working, a->info.array.raid_disks, | |
2919 | a->info.array.level); | |
2920 | if (working == a->info.array.raid_disks) | |
2921 | return NULL; /* array not degraded */ | |
2922 | switch (a->info.array.level) { | |
2923 | case 1: | |
2924 | if (working == 0) | |
2925 | return NULL; /* failed */ | |
2926 | break; | |
2927 | case 4: | |
2928 | case 5: | |
2929 | if (working < a->info.array.raid_disks - 1) | |
2930 | return NULL; /* failed */ | |
2931 | break; | |
2932 | case 6: | |
2933 | if (working < a->info.array.raid_disks - 2) | |
2934 | return NULL; /* failed */ | |
2935 | break; | |
2936 | default: /* concat or stripe */ | |
2937 | return NULL; /* failed */ | |
2938 | } | |
2939 | ||
2940 | /* For each slot, if it is not working, find a spare */ | |
2941 | dl = ddf->dlist; | |
2942 | for (i = 0; i < a->info.array.raid_disks; i++) { | |
2943 | for (d = a->info.devs ; d ; d = d->next) | |
2944 | if (d->disk.raid_disk == i) | |
2945 | break; | |
2946 | printf("found %d: %p %x\n", i, d, d?d->curr_state:0); | |
2947 | if (d && (d->state_fd >= 0)) | |
2948 | continue; | |
2949 | ||
2950 | /* OK, this device needs recovery. Find a spare */ | |
2951 | again: | |
2952 | for ( ; dl ; dl = dl->next) { | |
2953 | unsigned long long esize; | |
2954 | unsigned long long pos; | |
2955 | struct mdinfo *d2; | |
2956 | int is_global = 0; | |
2957 | int is_dedicated = 0; | |
2958 | struct extent *ex; | |
2959 | int j; | |
2960 | /* If in this array, skip */ | |
2961 | for (d2 = a->info.devs ; d2 ; d2 = d2->next) | |
2962 | if (d2->disk.major == dl->major && | |
2963 | d2->disk.minor == dl->minor) { | |
2964 | printf("%x:%x already in array\n", dl->major, dl->minor); | |
2965 | break; | |
2966 | } | |
2967 | if (d2) | |
2968 | continue; | |
2969 | if (ddf->phys->entries[dl->pdnum].type & | |
2970 | __cpu_to_be16(DDF_Spare)) { | |
2971 | /* Check spare assign record */ | |
2972 | if (dl->spare) { | |
2973 | if (dl->spare->type & DDF_spare_dedicated) { | |
2974 | /* check spare_ents for guid */ | |
2975 | for (j = 0 ; | |
2976 | j < __be16_to_cpu(dl->spare->populated); | |
2977 | j++) { | |
2978 | if (memcmp(dl->spare->spare_ents[j].guid, | |
2979 | ddf->virt->entries[a->info.container_member].guid, | |
2980 | DDF_GUID_LEN) == 0) | |
2981 | is_dedicated = 1; | |
2982 | } | |
2983 | } else | |
2984 | is_global = 1; | |
2985 | } | |
2986 | } else if (ddf->phys->entries[dl->pdnum].type & | |
2987 | __cpu_to_be16(DDF_Global_Spare)) { | |
2988 | is_global = 1; | |
2989 | } | |
2990 | if ( ! (is_dedicated || | |
2991 | (is_global && global_ok))) { | |
2992 | printf("%x:%x not suitable: %d %d\n", dl->major, dl->minor, | |
2993 | is_dedicated, is_global); | |
2994 | continue; | |
2995 | } | |
2996 | ||
2997 | /* We are allowed to use this device - is there space? | |
2998 | * We need a->info.component_size sectors */ | |
2999 | ex = get_extents(ddf, dl); | |
3000 | if (!ex) { | |
3001 | printf("cannot get extents\n"); | |
3002 | continue; | |
3003 | } | |
3004 | j = 0; pos = 0; | |
3005 | esize = 0; | |
3006 | ||
3007 | do { | |
3008 | esize = ex[j].start - pos; | |
3009 | if (esize >= a->info.component_size) | |
3010 | break; | |
3011 | pos = ex[i].start + ex[i].size; | |
3012 | i++; | |
3013 | } while (ex[i-1].size); | |
3014 | ||
3015 | free(ex); | |
3016 | if (esize < a->info.component_size) { | |
3017 | printf("%x:%x has no room: %llu %llu\n", dl->major, dl->minor, | |
3018 | esize, a->info.component_size); | |
3019 | /* No room */ | |
3020 | continue; | |
3021 | } | |
3022 | ||
3023 | /* Cool, we have a device with some space at pos */ | |
3024 | di = malloc(sizeof(*di)); | |
3025 | memset(di, 0, sizeof(*di)); | |
3026 | di->disk.number = i; | |
3027 | di->disk.raid_disk = i; | |
3028 | di->disk.major = dl->major; | |
3029 | di->disk.minor = dl->minor; | |
3030 | di->disk.state = 0; | |
3031 | di->data_offset = pos; | |
3032 | di->component_size = a->info.component_size; | |
3033 | di->container_member = dl->pdnum; | |
3034 | di->next = rv; | |
3035 | rv = di; | |
3036 | printf("%x:%x to be %d at %llu\n", dl->major, dl->minor, | |
3037 | i, pos); | |
3038 | ||
3039 | break; | |
3040 | } | |
3041 | if (!dl && ! global_ok) { | |
3042 | /* not enough dedicated spares, try global */ | |
3043 | global_ok = 1; | |
3044 | dl = ddf->dlist; | |
3045 | goto again; | |
3046 | } | |
3047 | } | |
3048 | ||
3049 | if (!rv) | |
3050 | /* No spares found */ | |
3051 | return rv; | |
3052 | /* Now 'rv' has a list of devices to return. | |
3053 | * Create a metadata_update record to update the | |
3054 | * phys_refnum and lba_offset values | |
3055 | */ | |
904c1ef7 NB |
3056 | mu = malloc(sizeof(*mu)); |
3057 | mu->buf = malloc(ddf->conf_rec_len * 512); | |
7e1432fb NB |
3058 | mu->space = malloc(sizeof(struct vcl)); |
3059 | mu->len = ddf->conf_rec_len; | |
3060 | mu->next = *updates; | |
3061 | vc = find_vdcr(ddf, a->info.container_member); | |
3062 | memcpy(mu->buf, vc, ddf->conf_rec_len * 512); | |
3063 | ||
3064 | vc = (struct vd_config*)mu->buf; | |
3065 | lba = (__u64*)&vc->phys_refnum[ddf->mppe]; | |
3066 | for (di = rv ; di ; di = di->next) { | |
3067 | vc->phys_refnum[di->disk.raid_disk] = | |
3068 | ddf->phys->entries[dl->pdnum].refnum; | |
3069 | lba[di->disk.raid_disk] = di->data_offset; | |
3070 | } | |
3071 | *updates = mu; | |
3072 | return rv; | |
3073 | } | |
3074 | ||
a322f70c DW |
3075 | struct superswitch super_ddf = { |
3076 | #ifndef MDASSEMBLE | |
3077 | .examine_super = examine_super_ddf, | |
3078 | .brief_examine_super = brief_examine_super_ddf, | |
3079 | .detail_super = detail_super_ddf, | |
3080 | .brief_detail_super = brief_detail_super_ddf, | |
3081 | .validate_geometry = validate_geometry_ddf, | |
78e44928 | 3082 | .write_init_super = write_init_super_ddf, |
a322f70c DW |
3083 | #endif |
3084 | .match_home = match_home_ddf, | |
3085 | .uuid_from_super= uuid_from_super_ddf, | |
3086 | .getinfo_super = getinfo_super_ddf, | |
3087 | .update_super = update_super_ddf, | |
3088 | ||
3089 | .avail_size = avail_size_ddf, | |
3090 | ||
a19c88b8 NB |
3091 | .compare_super = compare_super_ddf, |
3092 | ||
a322f70c | 3093 | .load_super = load_super_ddf, |
ba7eb04f | 3094 | .init_super = init_super_ddf, |
a322f70c DW |
3095 | .store_super = store_zero_ddf, |
3096 | .free_super = free_super_ddf, | |
3097 | .match_metadata_desc = match_metadata_desc_ddf, | |
78e44928 NB |
3098 | .add_to_super = add_to_super_ddf, |
3099 | .container_content = container_content_ddf, | |
a322f70c | 3100 | |
a322f70c | 3101 | .external = 1, |
549e9569 NB |
3102 | |
3103 | /* for mdmon */ | |
3104 | .open_new = ddf_open_new, | |
ed9d66aa | 3105 | .set_array_state= ddf_set_array_state, |
549e9569 NB |
3106 | .set_disk = ddf_set_disk, |
3107 | .sync_metadata = ddf_sync_metadata, | |
88c164f4 | 3108 | .process_update = ddf_process_update, |
7e1432fb | 3109 | .activate_spare = ddf_activate_spare, |
549e9569 | 3110 | |
a322f70c | 3111 | }; |