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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 | ||
a322f70c DW |
34 | /* a non-official T10 name for creation GUIDs */ |
35 | static char T10[] = "Linux-MD"; | |
36 | ||
37 | /* DDF timestamps are 1980 based, so we need to add | |
38 | * second-in-decade-of-seventies to convert to linux timestamps. | |
39 | * 10 years with 2 leap years. | |
40 | */ | |
41 | #define DECADE (3600*24*(365*10+2)) | |
42 | unsigned long crc32( | |
43 | unsigned long crc, | |
44 | const unsigned char *buf, | |
45 | unsigned len); | |
46 | ||
47 | /* The DDF metadata handling. | |
48 | * DDF metadata lives at the end of the device. | |
49 | * The last 512 byte block provides an 'anchor' which is used to locate | |
50 | * the rest of the metadata which usually lives immediately behind the anchor. | |
51 | * | |
52 | * Note: | |
53 | * - all multibyte numeric fields are bigendian. | |
54 | * - all strings are space padded. | |
55 | * | |
56 | */ | |
57 | ||
58 | /* Primary Raid Level (PRL) */ | |
59 | #define DDF_RAID0 0x00 | |
60 | #define DDF_RAID1 0x01 | |
61 | #define DDF_RAID3 0x03 | |
62 | #define DDF_RAID4 0x04 | |
63 | #define DDF_RAID5 0x05 | |
64 | #define DDF_RAID1E 0x11 | |
65 | #define DDF_JBOD 0x0f | |
66 | #define DDF_CONCAT 0x1f | |
67 | #define DDF_RAID5E 0x15 | |
68 | #define DDF_RAID5EE 0x25 | |
59e36268 | 69 | #define DDF_RAID6 0x06 |
a322f70c DW |
70 | |
71 | /* Raid Level Qualifier (RLQ) */ | |
72 | #define DDF_RAID0_SIMPLE 0x00 | |
73 | #define DDF_RAID1_SIMPLE 0x00 /* just 2 devices in this plex */ | |
74 | #define DDF_RAID1_MULTI 0x01 /* exactly 3 devices in this plex */ | |
75 | #define DDF_RAID3_0 0x00 /* parity in first extent */ | |
76 | #define DDF_RAID3_N 0x01 /* parity in last extent */ | |
77 | #define DDF_RAID4_0 0x00 /* parity in first extent */ | |
78 | #define DDF_RAID4_N 0x01 /* parity in last extent */ | |
79 | /* these apply to raid5e and raid5ee as well */ | |
80 | #define DDF_RAID5_0_RESTART 0x00 /* same as 'right asymmetric' - layout 1 */ | |
59e36268 | 81 | #define DDF_RAID6_0_RESTART 0x01 /* raid6 different from raid5 here!!! */ |
a322f70c DW |
82 | #define DDF_RAID5_N_RESTART 0x02 /* same as 'left asymmetric' - layout 0 */ |
83 | #define DDF_RAID5_N_CONTINUE 0x03 /* same as 'left symmetric' - layout 2 */ | |
84 | ||
85 | #define DDF_RAID1E_ADJACENT 0x00 /* raid10 nearcopies==2 */ | |
86 | #define DDF_RAID1E_OFFSET 0x01 /* raid10 offsetcopies==2 */ | |
87 | ||
88 | /* Secondary RAID Level (SRL) */ | |
89 | #define DDF_2STRIPED 0x00 /* This is weirder than RAID0 !! */ | |
90 | #define DDF_2MIRRORED 0x01 | |
91 | #define DDF_2CONCAT 0x02 | |
92 | #define DDF_2SPANNED 0x03 /* This is also weird - be careful */ | |
93 | ||
94 | /* Magic numbers */ | |
95 | #define DDF_HEADER_MAGIC __cpu_to_be32(0xDE11DE11) | |
96 | #define DDF_CONTROLLER_MAGIC __cpu_to_be32(0xAD111111) | |
97 | #define DDF_PHYS_RECORDS_MAGIC __cpu_to_be32(0x22222222) | |
98 | #define DDF_PHYS_DATA_MAGIC __cpu_to_be32(0x33333333) | |
99 | #define DDF_VIRT_RECORDS_MAGIC __cpu_to_be32(0xDDDDDDDD) | |
100 | #define DDF_VD_CONF_MAGIC __cpu_to_be32(0xEEEEEEEE) | |
101 | #define DDF_SPARE_ASSIGN_MAGIC __cpu_to_be32(0x55555555) | |
102 | #define DDF_VU_CONF_MAGIC __cpu_to_be32(0x88888888) | |
103 | #define DDF_VENDOR_LOG_MAGIC __cpu_to_be32(0x01dBEEF0) | |
104 | #define DDF_BBM_LOG_MAGIC __cpu_to_be32(0xABADB10C) | |
105 | ||
106 | #define DDF_GUID_LEN 24 | |
59e36268 NB |
107 | #define DDF_REVISION_0 "01.00.00" |
108 | #define DDF_REVISION_2 "01.02.00" | |
a322f70c DW |
109 | |
110 | struct ddf_header { | |
88c164f4 | 111 | __u32 magic; /* DDF_HEADER_MAGIC */ |
a322f70c DW |
112 | __u32 crc; |
113 | char guid[DDF_GUID_LEN]; | |
59e36268 | 114 | char revision[8]; /* 01.02.00 */ |
a322f70c DW |
115 | __u32 seq; /* starts at '1' */ |
116 | __u32 timestamp; | |
117 | __u8 openflag; | |
118 | __u8 foreignflag; | |
119 | __u8 enforcegroups; | |
120 | __u8 pad0; /* 0xff */ | |
121 | __u8 pad1[12]; /* 12 * 0xff */ | |
122 | /* 64 bytes so far */ | |
123 | __u8 header_ext[32]; /* reserved: fill with 0xff */ | |
124 | __u64 primary_lba; | |
125 | __u64 secondary_lba; | |
126 | __u8 type; | |
127 | __u8 pad2[3]; /* 0xff */ | |
128 | __u32 workspace_len; /* sectors for vendor space - | |
129 | * at least 32768(sectors) */ | |
130 | __u64 workspace_lba; | |
131 | __u16 max_pd_entries; /* one of 15, 63, 255, 1023, 4095 */ | |
132 | __u16 max_vd_entries; /* 2^(4,6,8,10,12)-1 : i.e. as above */ | |
133 | __u16 max_partitions; /* i.e. max num of configuration | |
134 | record entries per disk */ | |
135 | __u16 config_record_len; /* 1 +ROUNDUP(max_primary_element_entries | |
136 | *12/512) */ | |
137 | __u16 max_primary_element_entries; /* 16, 64, 256, 1024, or 4096 */ | |
138 | __u8 pad3[54]; /* 0xff */ | |
139 | /* 192 bytes so far */ | |
140 | __u32 controller_section_offset; | |
141 | __u32 controller_section_length; | |
142 | __u32 phys_section_offset; | |
143 | __u32 phys_section_length; | |
144 | __u32 virt_section_offset; | |
145 | __u32 virt_section_length; | |
146 | __u32 config_section_offset; | |
147 | __u32 config_section_length; | |
148 | __u32 data_section_offset; | |
149 | __u32 data_section_length; | |
150 | __u32 bbm_section_offset; | |
151 | __u32 bbm_section_length; | |
152 | __u32 diag_space_offset; | |
153 | __u32 diag_space_length; | |
154 | __u32 vendor_offset; | |
155 | __u32 vendor_length; | |
156 | /* 256 bytes so far */ | |
157 | __u8 pad4[256]; /* 0xff */ | |
158 | }; | |
159 | ||
160 | /* type field */ | |
161 | #define DDF_HEADER_ANCHOR 0x00 | |
162 | #define DDF_HEADER_PRIMARY 0x01 | |
163 | #define DDF_HEADER_SECONDARY 0x02 | |
164 | ||
165 | /* The content of the 'controller section' - global scope */ | |
166 | struct ddf_controller_data { | |
88c164f4 | 167 | __u32 magic; /* DDF_CONTROLLER_MAGIC */ |
a322f70c DW |
168 | __u32 crc; |
169 | char guid[DDF_GUID_LEN]; | |
170 | struct controller_type { | |
171 | __u16 vendor_id; | |
172 | __u16 device_id; | |
173 | __u16 sub_vendor_id; | |
174 | __u16 sub_device_id; | |
175 | } type; | |
176 | char product_id[16]; | |
177 | __u8 pad[8]; /* 0xff */ | |
178 | __u8 vendor_data[448]; | |
179 | }; | |
180 | ||
181 | /* The content of phys_section - global scope */ | |
182 | struct phys_disk { | |
88c164f4 | 183 | __u32 magic; /* DDF_PHYS_RECORDS_MAGIC */ |
a322f70c DW |
184 | __u32 crc; |
185 | __u16 used_pdes; | |
186 | __u16 max_pdes; | |
187 | __u8 pad[52]; | |
188 | struct phys_disk_entry { | |
189 | char guid[DDF_GUID_LEN]; | |
190 | __u32 refnum; | |
191 | __u16 type; | |
192 | __u16 state; | |
193 | __u64 config_size; /* DDF structures must be after here */ | |
194 | char path[18]; /* another horrible structure really */ | |
195 | __u8 pad[6]; | |
196 | } entries[0]; | |
197 | }; | |
198 | ||
199 | /* phys_disk_entry.type is a bitmap - bigendian remember */ | |
200 | #define DDF_Forced_PD_GUID 1 | |
201 | #define DDF_Active_in_VD 2 | |
88c164f4 | 202 | #define DDF_Global_Spare 4 /* VD_CONF records are ignored */ |
a322f70c DW |
203 | #define DDF_Spare 8 /* overrides Global_spare */ |
204 | #define DDF_Foreign 16 | |
205 | #define DDF_Legacy 32 /* no DDF on this device */ | |
206 | ||
207 | #define DDF_Interface_mask 0xf00 | |
208 | #define DDF_Interface_SCSI 0x100 | |
209 | #define DDF_Interface_SAS 0x200 | |
210 | #define DDF_Interface_SATA 0x300 | |
211 | #define DDF_Interface_FC 0x400 | |
212 | ||
213 | /* phys_disk_entry.state is a bigendian bitmap */ | |
214 | #define DDF_Online 1 | |
215 | #define DDF_Failed 2 /* overrides 1,4,8 */ | |
216 | #define DDF_Rebuilding 4 | |
217 | #define DDF_Transition 8 | |
218 | #define DDF_SMART 16 | |
219 | #define DDF_ReadErrors 32 | |
220 | #define DDF_Missing 64 | |
221 | ||
222 | /* The content of the virt_section global scope */ | |
223 | struct virtual_disk { | |
88c164f4 | 224 | __u32 magic; /* DDF_VIRT_RECORDS_MAGIC */ |
a322f70c DW |
225 | __u32 crc; |
226 | __u16 populated_vdes; | |
227 | __u16 max_vdes; | |
228 | __u8 pad[52]; | |
229 | struct virtual_entry { | |
230 | char guid[DDF_GUID_LEN]; | |
231 | __u16 unit; | |
232 | __u16 pad0; /* 0xffff */ | |
233 | __u16 guid_crc; | |
234 | __u16 type; | |
235 | __u8 state; | |
236 | __u8 init_state; | |
237 | __u8 pad1[14]; | |
238 | char name[16]; | |
239 | } entries[0]; | |
240 | }; | |
241 | ||
242 | /* virtual_entry.type is a bitmap - bigendian */ | |
243 | #define DDF_Shared 1 | |
244 | #define DDF_Enforce_Groups 2 | |
245 | #define DDF_Unicode 4 | |
246 | #define DDF_Owner_Valid 8 | |
247 | ||
248 | /* virtual_entry.state is a bigendian bitmap */ | |
249 | #define DDF_state_mask 0x7 | |
250 | #define DDF_state_optimal 0x0 | |
251 | #define DDF_state_degraded 0x1 | |
252 | #define DDF_state_deleted 0x2 | |
253 | #define DDF_state_missing 0x3 | |
254 | #define DDF_state_failed 0x4 | |
7a7cc504 | 255 | #define DDF_state_part_optimal 0x5 |
a322f70c DW |
256 | |
257 | #define DDF_state_morphing 0x8 | |
258 | #define DDF_state_inconsistent 0x10 | |
259 | ||
260 | /* virtual_entry.init_state is a bigendian bitmap */ | |
261 | #define DDF_initstate_mask 0x03 | |
262 | #define DDF_init_not 0x00 | |
7a7cc504 NB |
263 | #define DDF_init_quick 0x01 /* initialisation is progress. |
264 | * i.e. 'state_inconsistent' */ | |
a322f70c DW |
265 | #define DDF_init_full 0x02 |
266 | ||
267 | #define DDF_access_mask 0xc0 | |
268 | #define DDF_access_rw 0x00 | |
269 | #define DDF_access_ro 0x80 | |
270 | #define DDF_access_blocked 0xc0 | |
271 | ||
272 | /* The content of the config_section - local scope | |
273 | * It has multiple records each config_record_len sectors | |
274 | * They can be vd_config or spare_assign | |
275 | */ | |
276 | ||
277 | struct vd_config { | |
88c164f4 | 278 | __u32 magic; /* DDF_VD_CONF_MAGIC */ |
a322f70c DW |
279 | __u32 crc; |
280 | char guid[DDF_GUID_LEN]; | |
281 | __u32 timestamp; | |
282 | __u32 seqnum; | |
283 | __u8 pad0[24]; | |
284 | __u16 prim_elmnt_count; | |
285 | __u8 chunk_shift; /* 0 == 512, 1==1024 etc */ | |
286 | __u8 prl; | |
287 | __u8 rlq; | |
288 | __u8 sec_elmnt_count; | |
289 | __u8 sec_elmnt_seq; | |
290 | __u8 srl; | |
598f0d58 NB |
291 | __u64 blocks; /* blocks per component could be different |
292 | * on different component devices...(only | |
293 | * for concat I hope) */ | |
294 | __u64 array_blocks; /* blocks in array */ | |
a322f70c DW |
295 | __u8 pad1[8]; |
296 | __u32 spare_refs[8]; | |
297 | __u8 cache_pol[8]; | |
298 | __u8 bg_rate; | |
299 | __u8 pad2[3]; | |
300 | __u8 pad3[52]; | |
301 | __u8 pad4[192]; | |
302 | __u8 v0[32]; /* reserved- 0xff */ | |
303 | __u8 v1[32]; /* reserved- 0xff */ | |
304 | __u8 v2[16]; /* reserved- 0xff */ | |
305 | __u8 v3[16]; /* reserved- 0xff */ | |
306 | __u8 vendor[32]; | |
307 | __u32 phys_refnum[0]; /* refnum of each disk in sequence */ | |
308 | /*__u64 lba_offset[0]; LBA offset in each phys. Note extents in a | |
309 | bvd are always the same size */ | |
310 | }; | |
311 | ||
312 | /* vd_config.cache_pol[7] is a bitmap */ | |
313 | #define DDF_cache_writeback 1 /* else writethrough */ | |
314 | #define DDF_cache_wadaptive 2 /* only applies if writeback */ | |
315 | #define DDF_cache_readahead 4 | |
316 | #define DDF_cache_radaptive 8 /* only if doing read-ahead */ | |
317 | #define DDF_cache_ifnobatt 16 /* even to write cache if battery is poor */ | |
318 | #define DDF_cache_wallowed 32 /* enable write caching */ | |
319 | #define DDF_cache_rallowed 64 /* enable read caching */ | |
320 | ||
321 | struct spare_assign { | |
88c164f4 | 322 | __u32 magic; /* DDF_SPARE_ASSIGN_MAGIC */ |
a322f70c DW |
323 | __u32 crc; |
324 | __u32 timestamp; | |
325 | __u8 reserved[7]; | |
326 | __u8 type; | |
327 | __u16 populated; /* SAEs used */ | |
328 | __u16 max; /* max SAEs */ | |
329 | __u8 pad[8]; | |
330 | struct spare_assign_entry { | |
331 | char guid[DDF_GUID_LEN]; | |
332 | __u16 secondary_element; | |
333 | __u8 pad[6]; | |
334 | } spare_ents[0]; | |
335 | }; | |
336 | /* spare_assign.type is a bitmap */ | |
337 | #define DDF_spare_dedicated 0x1 /* else global */ | |
338 | #define DDF_spare_revertible 0x2 /* else committable */ | |
339 | #define DDF_spare_active 0x4 /* else not active */ | |
340 | #define DDF_spare_affinity 0x8 /* enclosure affinity */ | |
341 | ||
342 | /* The data_section contents - local scope */ | |
343 | struct disk_data { | |
88c164f4 | 344 | __u32 magic; /* DDF_PHYS_DATA_MAGIC */ |
a322f70c DW |
345 | __u32 crc; |
346 | char guid[DDF_GUID_LEN]; | |
347 | __u32 refnum; /* crc of some magic drive data ... */ | |
348 | __u8 forced_ref; /* set when above was not result of magic */ | |
349 | __u8 forced_guid; /* set if guid was forced rather than magic */ | |
350 | __u8 vendor[32]; | |
351 | __u8 pad[442]; | |
352 | }; | |
353 | ||
354 | /* bbm_section content */ | |
355 | struct bad_block_log { | |
356 | __u32 magic; | |
357 | __u32 crc; | |
358 | __u16 entry_count; | |
359 | __u32 spare_count; | |
360 | __u8 pad[10]; | |
361 | __u64 first_spare; | |
362 | struct mapped_block { | |
363 | __u64 defective_start; | |
364 | __u32 replacement_start; | |
365 | __u16 remap_count; | |
366 | __u8 pad[2]; | |
367 | } entries[0]; | |
368 | }; | |
369 | ||
370 | /* Struct for internally holding ddf structures */ | |
371 | /* The DDF structure stored on each device is potentially | |
372 | * quite different, as some data is global and some is local. | |
373 | * The global data is: | |
374 | * - ddf header | |
375 | * - controller_data | |
376 | * - Physical disk records | |
377 | * - Virtual disk records | |
378 | * The local data is: | |
379 | * - Configuration records | |
380 | * - Physical Disk data section | |
381 | * ( and Bad block and vendor which I don't care about yet). | |
382 | * | |
383 | * The local data is parsed into separate lists as it is read | |
384 | * and reconstructed for writing. This means that we only need | |
385 | * to make config changes once and they are automatically | |
386 | * propagated to all devices. | |
387 | * Note that the ddf_super has space of the conf and disk data | |
388 | * for this disk and also for a list of all such data. | |
389 | * The list is only used for the superblock that is being | |
390 | * built in Create or Assemble to describe the whole array. | |
391 | */ | |
392 | struct ddf_super { | |
6416d527 | 393 | struct ddf_header anchor, primary, secondary; |
a322f70c | 394 | struct ddf_controller_data controller; |
6416d527 | 395 | struct ddf_header *active; |
a322f70c DW |
396 | struct phys_disk *phys; |
397 | struct virtual_disk *virt; | |
398 | int pdsize, vdsize; | |
8c3b8c2c | 399 | int max_part, mppe, conf_rec_len; |
d2ca6449 | 400 | int currentdev; |
18a2f463 | 401 | int updates_pending; |
a322f70c | 402 | struct vcl { |
6416d527 NB |
403 | union { |
404 | char space[512]; | |
405 | struct { | |
406 | struct vcl *next; | |
407 | __u64 *lba_offset; /* location in 'conf' of | |
408 | * the lba table */ | |
409 | int vcnum; /* index into ->virt */ | |
410 | __u64 *block_sizes; /* NULL if all the same */ | |
411 | }; | |
412 | }; | |
a322f70c | 413 | struct vd_config conf; |
d2ca6449 | 414 | } *conflist, *currentconf; |
a322f70c | 415 | struct dl { |
6416d527 NB |
416 | union { |
417 | char space[512]; | |
418 | struct { | |
419 | struct dl *next; | |
420 | int major, minor; | |
421 | char *devname; | |
422 | int fd; | |
423 | unsigned long long size; /* sectors */ | |
424 | int pdnum; /* index in ->phys */ | |
425 | struct spare_assign *spare; | |
426 | }; | |
427 | }; | |
a322f70c | 428 | struct disk_data disk; |
2cc2983d | 429 | void *mdupdate; /* hold metadata update */ |
b2280677 | 430 | struct vcl *vlist[0]; /* max_part in size */ |
2cc2983d | 431 | } *dlist, *add_list; |
a322f70c DW |
432 | }; |
433 | ||
434 | #ifndef offsetof | |
435 | #define offsetof(t,f) ((size_t)&(((t*)0)->f)) | |
436 | #endif | |
437 | ||
a322f70c DW |
438 | |
439 | static int calc_crc(void *buf, int len) | |
440 | { | |
441 | /* crcs are always at the same place as in the ddf_header */ | |
442 | struct ddf_header *ddf = buf; | |
443 | __u32 oldcrc = ddf->crc; | |
444 | __u32 newcrc; | |
445 | ddf->crc = 0xffffffff; | |
446 | ||
447 | newcrc = crc32(0, buf, len); | |
448 | ddf->crc = oldcrc; | |
449 | return newcrc; | |
450 | } | |
451 | ||
452 | static int load_ddf_header(int fd, unsigned long long lba, | |
453 | unsigned long long size, | |
454 | int type, | |
455 | struct ddf_header *hdr, struct ddf_header *anchor) | |
456 | { | |
457 | /* read a ddf header (primary or secondary) from fd/lba | |
458 | * and check that it is consistent with anchor | |
459 | * Need to check: | |
460 | * magic, crc, guid, rev, and LBA's header_type, and | |
461 | * everything after header_type must be the same | |
462 | */ | |
463 | if (lba >= size-1) | |
464 | return 0; | |
465 | ||
466 | if (lseek64(fd, lba<<9, 0) < 0) | |
467 | return 0; | |
468 | ||
469 | if (read(fd, hdr, 512) != 512) | |
470 | return 0; | |
471 | ||
472 | if (hdr->magic != DDF_HEADER_MAGIC) | |
473 | return 0; | |
474 | if (calc_crc(hdr, 512) != hdr->crc) | |
475 | return 0; | |
476 | if (memcmp(anchor->guid, hdr->guid, DDF_GUID_LEN) != 0 || | |
477 | memcmp(anchor->revision, hdr->revision, 8) != 0 || | |
478 | anchor->primary_lba != hdr->primary_lba || | |
479 | anchor->secondary_lba != hdr->secondary_lba || | |
480 | hdr->type != type || | |
481 | memcmp(anchor->pad2, hdr->pad2, 512 - | |
482 | offsetof(struct ddf_header, pad2)) != 0) | |
483 | return 0; | |
484 | ||
485 | /* Looks good enough to me... */ | |
486 | return 1; | |
487 | } | |
488 | ||
489 | static void *load_section(int fd, struct ddf_super *super, void *buf, | |
490 | __u32 offset_be, __u32 len_be, int check) | |
491 | { | |
492 | unsigned long long offset = __be32_to_cpu(offset_be); | |
493 | unsigned long long len = __be32_to_cpu(len_be); | |
494 | int dofree = (buf == NULL); | |
495 | ||
496 | if (check) | |
497 | if (len != 2 && len != 8 && len != 32 | |
498 | && len != 128 && len != 512) | |
499 | return NULL; | |
500 | ||
501 | if (len > 1024) | |
502 | return NULL; | |
503 | if (buf) { | |
504 | /* All pre-allocated sections are a single block */ | |
505 | if (len != 1) | |
506 | return NULL; | |
3d2c4fc7 DW |
507 | } else if (posix_memalign(&buf, 512, len<<9) != 0) |
508 | buf = NULL; | |
6416d527 | 509 | |
a322f70c DW |
510 | if (!buf) |
511 | return NULL; | |
512 | ||
513 | if (super->active->type == 1) | |
514 | offset += __be64_to_cpu(super->active->primary_lba); | |
515 | else | |
516 | offset += __be64_to_cpu(super->active->secondary_lba); | |
517 | ||
518 | if (lseek64(fd, offset<<9, 0) != (offset<<9)) { | |
519 | if (dofree) | |
520 | free(buf); | |
521 | return NULL; | |
522 | } | |
523 | if (read(fd, buf, len<<9) != (len<<9)) { | |
524 | if (dofree) | |
525 | free(buf); | |
526 | return NULL; | |
527 | } | |
528 | return buf; | |
529 | } | |
530 | ||
531 | static int load_ddf_headers(int fd, struct ddf_super *super, char *devname) | |
532 | { | |
533 | unsigned long long dsize; | |
534 | ||
535 | get_dev_size(fd, NULL, &dsize); | |
536 | ||
537 | if (lseek64(fd, dsize-512, 0) < 0) { | |
538 | if (devname) | |
539 | fprintf(stderr, | |
540 | Name": Cannot seek to anchor block on %s: %s\n", | |
541 | devname, strerror(errno)); | |
542 | return 1; | |
543 | } | |
544 | if (read(fd, &super->anchor, 512) != 512) { | |
545 | if (devname) | |
546 | fprintf(stderr, | |
547 | Name ": Cannot read anchor block on %s: %s\n", | |
548 | devname, strerror(errno)); | |
549 | return 1; | |
550 | } | |
551 | if (super->anchor.magic != DDF_HEADER_MAGIC) { | |
552 | if (devname) | |
553 | fprintf(stderr, Name ": no DDF anchor found on %s\n", | |
554 | devname); | |
555 | return 2; | |
556 | } | |
557 | if (calc_crc(&super->anchor, 512) != super->anchor.crc) { | |
558 | if (devname) | |
559 | fprintf(stderr, Name ": bad CRC on anchor on %s\n", | |
560 | devname); | |
561 | return 2; | |
562 | } | |
59e36268 NB |
563 | if (memcmp(super->anchor.revision, DDF_REVISION_0, 8) != 0 && |
564 | memcmp(super->anchor.revision, DDF_REVISION_2, 8) != 0) { | |
a322f70c DW |
565 | if (devname) |
566 | fprintf(stderr, Name ": can only support super revision" | |
59e36268 NB |
567 | " %.8s and earlier, not %.8s on %s\n", |
568 | DDF_REVISION_2, super->anchor.revision,devname); | |
a322f70c DW |
569 | return 2; |
570 | } | |
571 | if (load_ddf_header(fd, __be64_to_cpu(super->anchor.primary_lba), | |
572 | dsize >> 9, 1, | |
573 | &super->primary, &super->anchor) == 0) { | |
574 | if (devname) | |
575 | fprintf(stderr, | |
576 | Name ": Failed to load primary DDF header " | |
577 | "on %s\n", devname); | |
578 | return 2; | |
579 | } | |
580 | super->active = &super->primary; | |
581 | if (load_ddf_header(fd, __be64_to_cpu(super->anchor.secondary_lba), | |
582 | dsize >> 9, 2, | |
583 | &super->secondary, &super->anchor)) { | |
584 | if ((__be32_to_cpu(super->primary.seq) | |
585 | < __be32_to_cpu(super->secondary.seq) && | |
586 | !super->secondary.openflag) | |
587 | || (__be32_to_cpu(super->primary.seq) | |
588 | == __be32_to_cpu(super->secondary.seq) && | |
589 | super->primary.openflag && !super->secondary.openflag) | |
590 | ) | |
591 | super->active = &super->secondary; | |
592 | } | |
593 | return 0; | |
594 | } | |
595 | ||
596 | static int load_ddf_global(int fd, struct ddf_super *super, char *devname) | |
597 | { | |
598 | void *ok; | |
599 | ok = load_section(fd, super, &super->controller, | |
600 | super->active->controller_section_offset, | |
601 | super->active->controller_section_length, | |
602 | 0); | |
603 | super->phys = load_section(fd, super, NULL, | |
604 | super->active->phys_section_offset, | |
605 | super->active->phys_section_length, | |
606 | 1); | |
607 | super->pdsize = __be32_to_cpu(super->active->phys_section_length) * 512; | |
608 | ||
609 | super->virt = load_section(fd, super, NULL, | |
610 | super->active->virt_section_offset, | |
611 | super->active->virt_section_length, | |
612 | 1); | |
613 | super->vdsize = __be32_to_cpu(super->active->virt_section_length) * 512; | |
614 | if (!ok || | |
615 | !super->phys || | |
616 | !super->virt) { | |
617 | free(super->phys); | |
618 | free(super->virt); | |
a2349791 NB |
619 | super->phys = NULL; |
620 | super->virt = NULL; | |
a322f70c DW |
621 | return 2; |
622 | } | |
623 | super->conflist = NULL; | |
624 | super->dlist = NULL; | |
8c3b8c2c NB |
625 | |
626 | super->max_part = __be16_to_cpu(super->active->max_partitions); | |
627 | super->mppe = __be16_to_cpu(super->active->max_primary_element_entries); | |
628 | super->conf_rec_len = __be16_to_cpu(super->active->config_record_len); | |
a322f70c DW |
629 | return 0; |
630 | } | |
631 | ||
632 | static int load_ddf_local(int fd, struct ddf_super *super, | |
633 | char *devname, int keep) | |
634 | { | |
635 | struct dl *dl; | |
636 | struct stat stb; | |
637 | char *conf; | |
638 | int i; | |
b2280677 | 639 | int vnum; |
59e36268 | 640 | int max_virt_disks = __be16_to_cpu(super->active->max_vd_entries); |
d2ca6449 | 641 | unsigned long long dsize; |
a322f70c DW |
642 | |
643 | /* First the local disk info */ | |
3d2c4fc7 | 644 | if (posix_memalign((void**)&dl, 512, |
6416d527 | 645 | sizeof(*dl) + |
3d2c4fc7 DW |
646 | (super->max_part) * sizeof(dl->vlist[0])) != 0) { |
647 | fprintf(stderr, Name ": %s could not allocate disk info buffer\n", | |
648 | __func__); | |
649 | return 1; | |
650 | } | |
a322f70c DW |
651 | |
652 | load_section(fd, super, &dl->disk, | |
653 | super->active->data_section_offset, | |
654 | super->active->data_section_length, | |
655 | 0); | |
656 | dl->devname = devname ? strdup(devname) : NULL; | |
598f0d58 | 657 | |
a322f70c DW |
658 | fstat(fd, &stb); |
659 | dl->major = major(stb.st_rdev); | |
660 | dl->minor = minor(stb.st_rdev); | |
661 | dl->next = super->dlist; | |
662 | dl->fd = keep ? fd : -1; | |
d2ca6449 NB |
663 | |
664 | dl->size = 0; | |
665 | if (get_dev_size(fd, devname, &dsize)) | |
666 | dl->size = dsize >> 9; | |
b2280677 NB |
667 | dl->spare = NULL; |
668 | for (i=0 ; i < super->max_part ; i++) | |
a322f70c DW |
669 | dl->vlist[i] = NULL; |
670 | super->dlist = dl; | |
59e36268 | 671 | dl->pdnum = -1; |
5575e7d9 NB |
672 | for (i=0; i < __be16_to_cpu(super->active->max_pd_entries); i++) |
673 | if (memcmp(super->phys->entries[i].guid, | |
674 | dl->disk.guid, DDF_GUID_LEN) == 0) | |
675 | dl->pdnum = i; | |
676 | ||
a322f70c DW |
677 | /* Now the config list. */ |
678 | /* 'conf' is an array of config entries, some of which are | |
679 | * probably invalid. Those which are good need to be copied into | |
680 | * the conflist | |
681 | */ | |
a322f70c DW |
682 | |
683 | conf = load_section(fd, super, NULL, | |
684 | super->active->config_section_offset, | |
685 | super->active->config_section_length, | |
686 | 0); | |
687 | ||
b2280677 | 688 | vnum = 0; |
a322f70c DW |
689 | for (i = 0; |
690 | i < __be32_to_cpu(super->active->config_section_length); | |
8c3b8c2c | 691 | i += super->conf_rec_len) { |
a322f70c DW |
692 | struct vd_config *vd = |
693 | (struct vd_config *)((char*)conf + i*512); | |
694 | struct vcl *vcl; | |
695 | ||
b2280677 NB |
696 | if (vd->magic == DDF_SPARE_ASSIGN_MAGIC) { |
697 | if (dl->spare) | |
698 | continue; | |
3d2c4fc7 DW |
699 | if (posix_memalign((void**)&dl->spare, 512, |
700 | super->conf_rec_len*512) != 0) { | |
701 | fprintf(stderr, Name | |
702 | ": %s could not allocate spare info buf\n", | |
703 | __func__); | |
704 | return 1; | |
705 | } | |
706 | ||
b2280677 NB |
707 | memcpy(dl->spare, vd, super->conf_rec_len*512); |
708 | continue; | |
709 | } | |
a322f70c DW |
710 | if (vd->magic != DDF_VD_CONF_MAGIC) |
711 | continue; | |
712 | for (vcl = super->conflist; vcl; vcl = vcl->next) { | |
713 | if (memcmp(vcl->conf.guid, | |
714 | vd->guid, DDF_GUID_LEN) == 0) | |
715 | break; | |
716 | } | |
717 | ||
718 | if (vcl) { | |
b2280677 | 719 | dl->vlist[vnum++] = vcl; |
a322f70c DW |
720 | if (__be32_to_cpu(vd->seqnum) <= |
721 | __be32_to_cpu(vcl->conf.seqnum)) | |
722 | continue; | |
59e36268 | 723 | } else { |
3d2c4fc7 | 724 | if (posix_memalign((void**)&vcl, 512, |
6416d527 | 725 | (super->conf_rec_len*512 + |
3d2c4fc7 DW |
726 | offsetof(struct vcl, conf))) != 0) { |
727 | fprintf(stderr, Name | |
728 | ": %s could not allocate vcl buf\n", | |
729 | __func__); | |
730 | return 1; | |
731 | } | |
a322f70c | 732 | vcl->next = super->conflist; |
59e36268 | 733 | vcl->block_sizes = NULL; /* FIXME not for CONCAT */ |
a322f70c | 734 | super->conflist = vcl; |
b2280677 | 735 | dl->vlist[vnum++] = vcl; |
a322f70c | 736 | } |
8c3b8c2c | 737 | memcpy(&vcl->conf, vd, super->conf_rec_len*512); |
a322f70c | 738 | vcl->lba_offset = (__u64*) |
8c3b8c2c | 739 | &vcl->conf.phys_refnum[super->mppe]; |
59e36268 NB |
740 | |
741 | for (i=0; i < max_virt_disks ; i++) | |
742 | if (memcmp(super->virt->entries[i].guid, | |
743 | vcl->conf.guid, DDF_GUID_LEN)==0) | |
744 | break; | |
745 | if (i < max_virt_disks) | |
746 | vcl->vcnum = i; | |
a322f70c DW |
747 | } |
748 | free(conf); | |
749 | ||
750 | return 0; | |
751 | } | |
752 | ||
753 | #ifndef MDASSEMBLE | |
754 | static int load_super_ddf_all(struct supertype *st, int fd, | |
755 | void **sbp, char *devname, int keep_fd); | |
756 | #endif | |
757 | static int load_super_ddf(struct supertype *st, int fd, | |
758 | char *devname) | |
759 | { | |
760 | unsigned long long dsize; | |
761 | struct ddf_super *super; | |
762 | int rv; | |
763 | ||
764 | #ifndef MDASSEMBLE | |
59e36268 | 765 | /* if 'fd' is a container, load metadata from all the devices */ |
3dbccbcf | 766 | if (load_super_ddf_all(st, fd, &st->sb, devname, 1) == 0) |
a322f70c DW |
767 | return 0; |
768 | #endif | |
f7e7067b NB |
769 | if (st->subarray[0]) |
770 | return 1; /* FIXME Is this correct */ | |
a322f70c DW |
771 | |
772 | if (get_dev_size(fd, devname, &dsize) == 0) | |
773 | return 1; | |
774 | ||
775 | /* 32M is a lower bound */ | |
776 | if (dsize <= 32*1024*1024) { | |
777 | if (devname) { | |
778 | fprintf(stderr, | |
779 | Name ": %s is too small for ddf: " | |
780 | "size is %llu sectors.\n", | |
781 | devname, dsize>>9); | |
782 | return 1; | |
783 | } | |
784 | } | |
785 | if (dsize & 511) { | |
786 | if (devname) { | |
787 | fprintf(stderr, | |
788 | Name ": %s is an odd size for ddf: " | |
789 | "size is %llu bytes.\n", | |
790 | devname, dsize); | |
791 | return 1; | |
792 | } | |
793 | } | |
794 | ||
6416d527 | 795 | if (posix_memalign((void**)&super, 512, sizeof(*super))!= 0) { |
a322f70c DW |
796 | fprintf(stderr, Name ": malloc of %zu failed.\n", |
797 | sizeof(*super)); | |
798 | return 1; | |
799 | } | |
a2349791 | 800 | memset(super, 0, sizeof(*super)); |
a322f70c DW |
801 | |
802 | rv = load_ddf_headers(fd, super, devname); | |
803 | if (rv) { | |
804 | free(super); | |
805 | return rv; | |
806 | } | |
807 | ||
808 | /* Have valid headers and have chosen the best. Let's read in the rest*/ | |
809 | ||
810 | rv = load_ddf_global(fd, super, devname); | |
811 | ||
812 | if (rv) { | |
813 | if (devname) | |
814 | fprintf(stderr, | |
815 | Name ": Failed to load all information " | |
816 | "sections on %s\n", devname); | |
817 | free(super); | |
818 | return rv; | |
819 | } | |
820 | ||
3d2c4fc7 DW |
821 | rv = load_ddf_local(fd, super, devname, 0); |
822 | ||
823 | if (rv) { | |
824 | if (devname) | |
825 | fprintf(stderr, | |
826 | Name ": Failed to load all information " | |
827 | "sections on %s\n", devname); | |
828 | free(super); | |
829 | return rv; | |
830 | } | |
a322f70c DW |
831 | |
832 | /* Should possibly check the sections .... */ | |
833 | ||
834 | st->sb = super; | |
835 | if (st->ss == NULL) { | |
836 | st->ss = &super_ddf; | |
837 | st->minor_version = 0; | |
838 | st->max_devs = 512; | |
839 | } | |
352452c3 | 840 | st->loaded_container = 0; |
a322f70c DW |
841 | return 0; |
842 | ||
843 | } | |
844 | ||
845 | static void free_super_ddf(struct supertype *st) | |
846 | { | |
847 | struct ddf_super *ddf = st->sb; | |
848 | if (ddf == NULL) | |
849 | return; | |
850 | free(ddf->phys); | |
851 | free(ddf->virt); | |
852 | while (ddf->conflist) { | |
853 | struct vcl *v = ddf->conflist; | |
854 | ddf->conflist = v->next; | |
59e36268 NB |
855 | if (v->block_sizes) |
856 | free(v->block_sizes); | |
a322f70c DW |
857 | free(v); |
858 | } | |
859 | while (ddf->dlist) { | |
860 | struct dl *d = ddf->dlist; | |
861 | ddf->dlist = d->next; | |
862 | if (d->fd >= 0) | |
863 | close(d->fd); | |
b2280677 NB |
864 | if (d->spare) |
865 | free(d->spare); | |
a322f70c DW |
866 | free(d); |
867 | } | |
868 | free(ddf); | |
869 | st->sb = NULL; | |
870 | } | |
871 | ||
872 | static struct supertype *match_metadata_desc_ddf(char *arg) | |
873 | { | |
874 | /* 'ddf' only support containers */ | |
875 | struct supertype *st; | |
876 | if (strcmp(arg, "ddf") != 0 && | |
877 | strcmp(arg, "default") != 0 | |
878 | ) | |
879 | return NULL; | |
880 | ||
881 | st = malloc(sizeof(*st)); | |
ef609477 | 882 | memset(st, 0, sizeof(*st)); |
a322f70c DW |
883 | st->ss = &super_ddf; |
884 | st->max_devs = 512; | |
885 | st->minor_version = 0; | |
886 | st->sb = NULL; | |
887 | return st; | |
888 | } | |
889 | ||
a322f70c DW |
890 | |
891 | #ifndef MDASSEMBLE | |
892 | ||
893 | static mapping_t ddf_state[] = { | |
894 | { "Optimal", 0}, | |
895 | { "Degraded", 1}, | |
896 | { "Deleted", 2}, | |
897 | { "Missing", 3}, | |
898 | { "Failed", 4}, | |
899 | { "Partially Optimal", 5}, | |
900 | { "-reserved-", 6}, | |
901 | { "-reserved-", 7}, | |
902 | { NULL, 0} | |
903 | }; | |
904 | ||
905 | static mapping_t ddf_init_state[] = { | |
906 | { "Not Initialised", 0}, | |
907 | { "QuickInit in Progress", 1}, | |
908 | { "Fully Initialised", 2}, | |
909 | { "*UNKNOWN*", 3}, | |
910 | { NULL, 0} | |
911 | }; | |
912 | static mapping_t ddf_access[] = { | |
913 | { "Read/Write", 0}, | |
914 | { "Reserved", 1}, | |
915 | { "Read Only", 2}, | |
916 | { "Blocked (no access)", 3}, | |
917 | { NULL ,0} | |
918 | }; | |
919 | ||
920 | static mapping_t ddf_level[] = { | |
921 | { "RAID0", DDF_RAID0}, | |
922 | { "RAID1", DDF_RAID1}, | |
923 | { "RAID3", DDF_RAID3}, | |
924 | { "RAID4", DDF_RAID4}, | |
925 | { "RAID5", DDF_RAID5}, | |
926 | { "RAID1E",DDF_RAID1E}, | |
927 | { "JBOD", DDF_JBOD}, | |
928 | { "CONCAT",DDF_CONCAT}, | |
929 | { "RAID5E",DDF_RAID5E}, | |
930 | { "RAID5EE",DDF_RAID5EE}, | |
931 | { "RAID6", DDF_RAID6}, | |
932 | { NULL, 0} | |
933 | }; | |
934 | static mapping_t ddf_sec_level[] = { | |
935 | { "Striped", DDF_2STRIPED}, | |
936 | { "Mirrored", DDF_2MIRRORED}, | |
937 | { "Concat", DDF_2CONCAT}, | |
938 | { "Spanned", DDF_2SPANNED}, | |
939 | { NULL, 0} | |
940 | }; | |
941 | #endif | |
942 | ||
943 | struct num_mapping { | |
944 | int num1, num2; | |
945 | }; | |
946 | static struct num_mapping ddf_level_num[] = { | |
947 | { DDF_RAID0, 0 }, | |
948 | { DDF_RAID1, 1 }, | |
949 | { DDF_RAID3, LEVEL_UNSUPPORTED }, | |
60f18132 NB |
950 | { DDF_RAID4, 4 }, |
951 | { DDF_RAID5, 5 }, | |
a322f70c DW |
952 | { DDF_RAID1E, LEVEL_UNSUPPORTED }, |
953 | { DDF_JBOD, LEVEL_UNSUPPORTED }, | |
954 | { DDF_CONCAT, LEVEL_LINEAR }, | |
955 | { DDF_RAID5E, LEVEL_UNSUPPORTED }, | |
956 | { DDF_RAID5EE, LEVEL_UNSUPPORTED }, | |
957 | { DDF_RAID6, 6}, | |
958 | { MAXINT, MAXINT } | |
959 | }; | |
960 | ||
961 | static int map_num1(struct num_mapping *map, int num) | |
962 | { | |
963 | int i; | |
964 | for (i=0 ; map[i].num1 != MAXINT; i++) | |
965 | if (map[i].num1 == num) | |
966 | break; | |
967 | return map[i].num2; | |
968 | } | |
969 | ||
970 | #ifndef MDASSEMBLE | |
971 | static void print_guid(char *guid, int tstamp) | |
972 | { | |
973 | /* A GUIDs are part (or all) ASCII and part binary. | |
974 | * They tend to be space padded. | |
59e36268 NB |
975 | * We print the GUID in HEX, then in parentheses add |
976 | * any initial ASCII sequence, and a possible | |
977 | * time stamp from bytes 16-19 | |
a322f70c DW |
978 | */ |
979 | int l = DDF_GUID_LEN; | |
980 | int i; | |
59e36268 NB |
981 | |
982 | for (i=0 ; i<DDF_GUID_LEN ; i++) { | |
983 | if ((i&3)==0 && i != 0) printf(":"); | |
984 | printf("%02X", guid[i]&255); | |
985 | } | |
986 | ||
987 | printf(" ("); | |
a322f70c DW |
988 | while (l && guid[l-1] == ' ') |
989 | l--; | |
990 | for (i=0 ; i<l ; i++) { | |
991 | if (guid[i] >= 0x20 && guid[i] < 0x7f) | |
992 | fputc(guid[i], stdout); | |
993 | else | |
59e36268 | 994 | break; |
a322f70c DW |
995 | } |
996 | if (tstamp) { | |
997 | time_t then = __be32_to_cpu(*(__u32*)(guid+16)) + DECADE; | |
998 | char tbuf[100]; | |
999 | struct tm *tm; | |
1000 | tm = localtime(&then); | |
59e36268 | 1001 | strftime(tbuf, 100, " %D %T",tm); |
a322f70c DW |
1002 | fputs(tbuf, stdout); |
1003 | } | |
59e36268 | 1004 | printf(")"); |
a322f70c DW |
1005 | } |
1006 | ||
1007 | static void examine_vd(int n, struct ddf_super *sb, char *guid) | |
1008 | { | |
8c3b8c2c | 1009 | int crl = sb->conf_rec_len; |
a322f70c DW |
1010 | struct vcl *vcl; |
1011 | ||
1012 | for (vcl = sb->conflist ; vcl ; vcl = vcl->next) { | |
1013 | struct vd_config *vc = &vcl->conf; | |
1014 | ||
1015 | if (calc_crc(vc, crl*512) != vc->crc) | |
1016 | continue; | |
1017 | if (memcmp(vc->guid, guid, DDF_GUID_LEN) != 0) | |
1018 | continue; | |
1019 | ||
1020 | /* Ok, we know about this VD, let's give more details */ | |
1021 | printf(" Raid Devices[%d] : %d\n", n, | |
1022 | __be16_to_cpu(vc->prim_elmnt_count)); | |
1023 | printf(" Chunk Size[%d] : %d sectors\n", n, | |
1024 | 1 << vc->chunk_shift); | |
1025 | printf(" Raid Level[%d] : %s\n", n, | |
1026 | map_num(ddf_level, vc->prl)?:"-unknown-"); | |
1027 | if (vc->sec_elmnt_count != 1) { | |
1028 | printf(" Secondary Position[%d] : %d of %d\n", n, | |
1029 | vc->sec_elmnt_seq, vc->sec_elmnt_count); | |
1030 | printf(" Secondary Level[%d] : %s\n", n, | |
1031 | map_num(ddf_sec_level, vc->srl) ?: "-unknown-"); | |
1032 | } | |
1033 | printf(" Device Size[%d] : %llu\n", n, | |
1034 | __be64_to_cpu(vc->blocks)/2); | |
1035 | printf(" Array Size[%d] : %llu\n", n, | |
1036 | __be64_to_cpu(vc->array_blocks)/2); | |
1037 | } | |
1038 | } | |
1039 | ||
1040 | static void examine_vds(struct ddf_super *sb) | |
1041 | { | |
1042 | int cnt = __be16_to_cpu(sb->virt->populated_vdes); | |
1043 | int i; | |
1044 | printf(" Virtual Disks : %d\n", cnt); | |
1045 | ||
1046 | for (i=0; i<cnt; i++) { | |
1047 | struct virtual_entry *ve = &sb->virt->entries[i]; | |
1048 | printf(" VD GUID[%d] : ", i); print_guid(ve->guid, 1); | |
1049 | printf("\n"); | |
1050 | printf(" unit[%d] : %d\n", i, __be16_to_cpu(ve->unit)); | |
1051 | printf(" state[%d] : %s, %s%s\n", i, | |
1052 | map_num(ddf_state, ve->state & 7), | |
1053 | (ve->state & 8) ? "Morphing, ": "", | |
1054 | (ve->state & 16)? "Not Consistent" : "Consistent"); | |
1055 | printf(" init state[%d] : %s\n", i, | |
1056 | map_num(ddf_init_state, ve->init_state&3)); | |
1057 | printf(" access[%d] : %s\n", i, | |
1058 | map_num(ddf_access, (ve->init_state>>6) & 3)); | |
1059 | printf(" Name[%d] : %.16s\n", i, ve->name); | |
1060 | examine_vd(i, sb, ve->guid); | |
1061 | } | |
1062 | if (cnt) printf("\n"); | |
1063 | } | |
1064 | ||
1065 | static void examine_pds(struct ddf_super *sb) | |
1066 | { | |
1067 | int cnt = __be16_to_cpu(sb->phys->used_pdes); | |
1068 | int i; | |
1069 | struct dl *dl; | |
1070 | printf(" Physical Disks : %d\n", cnt); | |
1071 | ||
1072 | for (i=0 ; i<cnt ; i++) { | |
1073 | struct phys_disk_entry *pd = &sb->phys->entries[i]; | |
1074 | int type = __be16_to_cpu(pd->type); | |
1075 | int state = __be16_to_cpu(pd->state); | |
1076 | ||
1077 | printf(" PD GUID[%d] : ", i); print_guid(pd->guid, 0); | |
1078 | printf("\n"); | |
1079 | printf(" ref[%d] : %08x\n", i, | |
1080 | __be32_to_cpu(pd->refnum)); | |
1081 | printf(" mode[%d] : %s%s%s%s%s\n", i, | |
1082 | (type&2) ? "active":"", | |
1083 | (type&4) ? "Global Spare":"", | |
1084 | (type&8) ? "spare" : "", | |
1085 | (type&16)? ", foreign" : "", | |
1086 | (type&32)? "pass-through" : ""); | |
1087 | printf(" state[%d] : %s%s%s%s%s%s%s\n", i, | |
1088 | (state&1)? "Online": "Offline", | |
1089 | (state&2)? ", Failed": "", | |
1090 | (state&4)? ", Rebuilding": "", | |
1091 | (state&8)? ", in-transition": "", | |
1092 | (state&16)? ", SMART errors": "", | |
1093 | (state&32)? ", Unrecovered Read Errors": "", | |
1094 | (state&64)? ", Missing" : ""); | |
1095 | printf(" Avail Size[%d] : %llu K\n", i, | |
1096 | __be64_to_cpu(pd->config_size)>>1); | |
1097 | for (dl = sb->dlist; dl ; dl = dl->next) { | |
1098 | if (dl->disk.refnum == pd->refnum) { | |
1099 | char *dv = map_dev(dl->major, dl->minor, 0); | |
1100 | if (dv) | |
1101 | printf(" Device[%d] : %s\n", | |
1102 | i, dv); | |
1103 | } | |
1104 | } | |
1105 | printf("\n"); | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | static void examine_super_ddf(struct supertype *st, char *homehost) | |
1110 | { | |
1111 | struct ddf_super *sb = st->sb; | |
1112 | ||
1113 | printf(" Magic : %08x\n", __be32_to_cpu(sb->anchor.magic)); | |
1114 | printf(" Version : %.8s\n", sb->anchor.revision); | |
598f0d58 NB |
1115 | printf("Controller GUID : "); print_guid(sb->controller.guid, 0); |
1116 | printf("\n"); | |
1117 | printf(" Container GUID : "); print_guid(sb->anchor.guid, 1); | |
a322f70c DW |
1118 | printf("\n"); |
1119 | printf(" Seq : %08x\n", __be32_to_cpu(sb->active->seq)); | |
1120 | printf(" Redundant hdr : %s\n", sb->secondary.magic == DDF_HEADER_MAGIC | |
1121 | ?"yes" : "no"); | |
1122 | examine_vds(sb); | |
1123 | examine_pds(sb); | |
1124 | } | |
1125 | ||
ff54de6e N |
1126 | static void getinfo_super_ddf(struct supertype *st, struct mdinfo *info); |
1127 | ||
1128 | ||
a322f70c DW |
1129 | static void brief_examine_super_ddf(struct supertype *st) |
1130 | { | |
1131 | /* We just write a generic DDF ARRAY entry | |
a322f70c | 1132 | */ |
ff54de6e N |
1133 | struct mdinfo info; |
1134 | char nbuf[64]; | |
1135 | getinfo_super_ddf(st, &info); | |
1136 | fname_from_uuid(st, &info, nbuf, ':'); | |
1137 | printf("ARRAY /dev/ddf metadata=ddf UUID=%s\n", nbuf + 5); | |
a322f70c DW |
1138 | } |
1139 | ||
1140 | static void detail_super_ddf(struct supertype *st, char *homehost) | |
1141 | { | |
1142 | /* FIXME later | |
1143 | * Could print DDF GUID | |
1144 | * Need to find which array | |
1145 | * If whole, briefly list all arrays | |
1146 | * If one, give name | |
1147 | */ | |
1148 | } | |
1149 | ||
1150 | static void brief_detail_super_ddf(struct supertype *st) | |
1151 | { | |
1152 | /* FIXME I really need to know which array we are detailing. | |
1153 | * Can that be stored in ddf_super?? | |
1154 | */ | |
1155 | // struct ddf_super *ddf = st->sb; | |
ff54de6e N |
1156 | struct mdinfo info; |
1157 | char nbuf[64]; | |
1158 | getinfo_super_ddf(st, &info); | |
1159 | fname_from_uuid(st, &info, nbuf,':'); | |
1160 | printf(" UUID=%s", nbuf + 5); | |
a322f70c | 1161 | } |
a322f70c DW |
1162 | #endif |
1163 | ||
1164 | static int match_home_ddf(struct supertype *st, char *homehost) | |
1165 | { | |
1166 | /* It matches 'this' host if the controller is a | |
1167 | * Linux-MD controller with vendor_data matching | |
1168 | * the hostname | |
1169 | */ | |
1170 | struct ddf_super *ddf = st->sb; | |
1171 | int len = strlen(homehost); | |
1172 | ||
1173 | return (memcmp(ddf->controller.guid, T10, 8) == 0 && | |
1174 | len < sizeof(ddf->controller.vendor_data) && | |
1175 | memcmp(ddf->controller.vendor_data, homehost,len) == 0 && | |
1176 | ddf->controller.vendor_data[len] == 0); | |
1177 | } | |
1178 | ||
0e600426 | 1179 | #ifndef MDASSEMBLE |
7a7cc504 | 1180 | static struct vd_config *find_vdcr(struct ddf_super *ddf, int inst) |
a322f70c | 1181 | { |
7a7cc504 | 1182 | struct vcl *v; |
59e36268 | 1183 | |
7a7cc504 | 1184 | for (v = ddf->conflist; v; v = v->next) |
59e36268 | 1185 | if (inst == v->vcnum) |
7a7cc504 NB |
1186 | return &v->conf; |
1187 | return NULL; | |
1188 | } | |
0e600426 | 1189 | #endif |
7a7cc504 NB |
1190 | |
1191 | static int find_phys(struct ddf_super *ddf, __u32 phys_refnum) | |
1192 | { | |
1193 | /* Find the entry in phys_disk which has the given refnum | |
1194 | * and return it's index | |
1195 | */ | |
1196 | int i; | |
1197 | for (i=0; i < __be16_to_cpu(ddf->phys->max_pdes); i++) | |
1198 | if (ddf->phys->entries[i].refnum == phys_refnum) | |
1199 | return i; | |
1200 | return -1; | |
a322f70c DW |
1201 | } |
1202 | ||
1203 | static void uuid_from_super_ddf(struct supertype *st, int uuid[4]) | |
1204 | { | |
1205 | /* The uuid returned here is used for: | |
1206 | * uuid to put into bitmap file (Create, Grow) | |
1207 | * uuid for backup header when saving critical section (Grow) | |
1208 | * comparing uuids when re-adding a device into an array | |
51006d85 N |
1209 | * In these cases the uuid required is that of the data-array, |
1210 | * not the device-set. | |
1211 | * uuid to recognise same set when adding a missing device back | |
1212 | * to an array. This is a uuid for the device-set. | |
1213 | * | |
a322f70c DW |
1214 | * For each of these we can make do with a truncated |
1215 | * or hashed uuid rather than the original, as long as | |
1216 | * everyone agrees. | |
a322f70c DW |
1217 | * In the case of SVD we assume the BVD is of interest, |
1218 | * though that might be the case if a bitmap were made for | |
1219 | * a mirrored SVD - worry about that later. | |
1220 | * So we need to find the VD configuration record for the | |
1221 | * relevant BVD and extract the GUID and Secondary_Element_Seq. | |
1222 | * The first 16 bytes of the sha1 of these is used. | |
1223 | */ | |
1224 | struct ddf_super *ddf = st->sb; | |
d2ca6449 | 1225 | struct vcl *vcl = ddf->currentconf; |
c5afc314 N |
1226 | char *guid; |
1227 | char buf[20]; | |
1228 | struct sha1_ctx ctx; | |
a322f70c | 1229 | |
c5afc314 N |
1230 | if (vcl) |
1231 | guid = vcl->conf.guid; | |
1232 | else | |
1233 | guid = ddf->anchor.guid; | |
1234 | ||
1235 | sha1_init_ctx(&ctx); | |
1236 | sha1_process_bytes(guid, DDF_GUID_LEN, &ctx); | |
1237 | if (vcl && vcl->conf.sec_elmnt_count > 1) | |
1238 | sha1_process_bytes(&vcl->conf.sec_elmnt_seq, 1, &ctx); | |
1239 | sha1_finish_ctx(&ctx, buf); | |
1240 | memcpy(uuid, buf, 4*4); | |
a322f70c DW |
1241 | } |
1242 | ||
78e44928 NB |
1243 | static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info); |
1244 | ||
a322f70c DW |
1245 | static void getinfo_super_ddf(struct supertype *st, struct mdinfo *info) |
1246 | { | |
1247 | struct ddf_super *ddf = st->sb; | |
1248 | ||
78e44928 NB |
1249 | if (ddf->currentconf) { |
1250 | getinfo_super_ddf_bvd(st, info); | |
1251 | return; | |
1252 | } | |
1253 | ||
a322f70c DW |
1254 | info->array.raid_disks = __be16_to_cpu(ddf->phys->used_pdes); |
1255 | info->array.level = LEVEL_CONTAINER; | |
1256 | info->array.layout = 0; | |
1257 | info->array.md_minor = -1; | |
1258 | info->array.ctime = DECADE + __be32_to_cpu(*(__u32*) | |
1259 | (ddf->anchor.guid+16)); | |
1260 | info->array.utime = 0; | |
1261 | info->array.chunk_size = 0; | |
1262 | ||
a322f70c DW |
1263 | |
1264 | info->disk.major = 0; | |
1265 | info->disk.minor = 0; | |
cba0191b NB |
1266 | if (ddf->dlist) { |
1267 | info->disk.number = __be32_to_cpu(ddf->dlist->disk.refnum); | |
59e36268 | 1268 | info->disk.raid_disk = find_phys(ddf, ddf->dlist->disk.refnum); |
d2ca6449 NB |
1269 | |
1270 | info->data_offset = __be64_to_cpu(ddf->phys-> | |
1271 | entries[info->disk.raid_disk]. | |
1272 | config_size); | |
1273 | info->component_size = ddf->dlist->size - info->data_offset; | |
cba0191b NB |
1274 | } else { |
1275 | info->disk.number = -1; | |
1276 | // info->disk.raid_disk = find refnum in the table and use index; | |
1277 | } | |
a19c88b8 NB |
1278 | info->disk.state = (1 << MD_DISK_SYNC); |
1279 | ||
d2ca6449 | 1280 | |
a19c88b8 | 1281 | info->reshape_active = 0; |
c5afc314 | 1282 | info->name[0] = 0; |
a322f70c | 1283 | |
f35f2525 N |
1284 | info->array.major_version = -1; |
1285 | info->array.minor_version = -2; | |
159c3a1a | 1286 | strcpy(info->text_version, "ddf"); |
a67dd8cc | 1287 | info->safe_mode_delay = 0; |
159c3a1a | 1288 | |
c5afc314 | 1289 | uuid_from_super_ddf(st, info->uuid); |
a322f70c | 1290 | |
a322f70c DW |
1291 | } |
1292 | ||
598f0d58 NB |
1293 | static int rlq_to_layout(int rlq, int prl, int raiddisks); |
1294 | ||
a322f70c DW |
1295 | static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info) |
1296 | { | |
1297 | struct ddf_super *ddf = st->sb; | |
d2ca6449 NB |
1298 | struct vcl *vc = ddf->currentconf; |
1299 | int cd = ddf->currentdev; | |
a322f70c DW |
1300 | |
1301 | /* FIXME this returns BVD info - what if we want SVD ?? */ | |
1302 | ||
d2ca6449 NB |
1303 | info->array.raid_disks = __be16_to_cpu(vc->conf.prim_elmnt_count); |
1304 | info->array.level = map_num1(ddf_level_num, vc->conf.prl); | |
1305 | info->array.layout = rlq_to_layout(vc->conf.rlq, vc->conf.prl, | |
598f0d58 | 1306 | info->array.raid_disks); |
a322f70c | 1307 | info->array.md_minor = -1; |
d2ca6449 NB |
1308 | info->array.ctime = DECADE + |
1309 | __be32_to_cpu(*(__u32*)(vc->conf.guid+16)); | |
1310 | info->array.utime = DECADE + __be32_to_cpu(vc->conf.timestamp); | |
1311 | info->array.chunk_size = 512 << vc->conf.chunk_shift; | |
1312 | ||
1313 | if (cd >= 0 && cd < ddf->mppe) { | |
1314 | info->data_offset = __be64_to_cpu(vc->lba_offset[cd]); | |
1315 | if (vc->block_sizes) | |
1316 | info->component_size = vc->block_sizes[cd]; | |
1317 | else | |
1318 | info->component_size = __be64_to_cpu(vc->conf.blocks); | |
1319 | } | |
a322f70c DW |
1320 | |
1321 | info->disk.major = 0; | |
1322 | info->disk.minor = 0; | |
1323 | // info->disk.number = __be32_to_cpu(ddf->disk.refnum); | |
1324 | // info->disk.raid_disk = find refnum in the table and use index; | |
1325 | // info->disk.state = ???; | |
1326 | ||
103f2410 NB |
1327 | info->container_member = ddf->currentconf->vcnum; |
1328 | ||
80d26cb2 NB |
1329 | info->resync_start = 0; |
1330 | if (!(ddf->virt->entries[info->container_member].state | |
1331 | & DDF_state_inconsistent) && | |
1332 | (ddf->virt->entries[info->container_member].init_state | |
1333 | & DDF_initstate_mask) | |
1334 | == DDF_init_full) | |
1335 | info->resync_start = ~0ULL; | |
1336 | ||
a322f70c DW |
1337 | uuid_from_super_ddf(st, info->uuid); |
1338 | ||
3576e302 | 1339 | info->container_member = atoi(st->subarray); |
f35f2525 N |
1340 | info->array.major_version = -1; |
1341 | info->array.minor_version = -2; | |
3576e302 | 1342 | sprintf(info->text_version, "/%s/%s", |
159c3a1a | 1343 | devnum2devname(st->container_dev), |
3576e302 | 1344 | st->subarray); |
a67dd8cc | 1345 | info->safe_mode_delay = 200; |
159c3a1a | 1346 | |
c5afc314 | 1347 | info->name[0] = 0; |
a322f70c DW |
1348 | } |
1349 | ||
598f0d58 | 1350 | |
a322f70c DW |
1351 | static int update_super_ddf(struct supertype *st, struct mdinfo *info, |
1352 | char *update, | |
1353 | char *devname, int verbose, | |
1354 | int uuid_set, char *homehost) | |
1355 | { | |
1356 | /* For 'assemble' and 'force' we need to return non-zero if any | |
1357 | * change was made. For others, the return value is ignored. | |
1358 | * Update options are: | |
1359 | * force-one : This device looks a bit old but needs to be included, | |
1360 | * update age info appropriately. | |
1361 | * assemble: clear any 'faulty' flag to allow this device to | |
1362 | * be assembled. | |
1363 | * force-array: Array is degraded but being forced, mark it clean | |
1364 | * if that will be needed to assemble it. | |
1365 | * | |
1366 | * newdev: not used ???? | |
1367 | * grow: Array has gained a new device - this is currently for | |
1368 | * linear only | |
1369 | * resync: mark as dirty so a resync will happen. | |
59e36268 | 1370 | * uuid: Change the uuid of the array to match what is given |
a322f70c DW |
1371 | * homehost: update the recorded homehost |
1372 | * name: update the name - preserving the homehost | |
1373 | * _reshape_progress: record new reshape_progress position. | |
1374 | * | |
1375 | * Following are not relevant for this version: | |
1376 | * sparc2.2 : update from old dodgey metadata | |
1377 | * super-minor: change the preferred_minor number | |
1378 | * summaries: update redundant counters. | |
1379 | */ | |
1380 | int rv = 0; | |
1381 | // struct ddf_super *ddf = st->sb; | |
7a7cc504 | 1382 | // struct vd_config *vd = find_vdcr(ddf, info->container_member); |
a322f70c DW |
1383 | // struct virtual_entry *ve = find_ve(ddf); |
1384 | ||
a322f70c DW |
1385 | /* we don't need to handle "force-*" or "assemble" as |
1386 | * there is no need to 'trick' the kernel. We the metadata is | |
1387 | * first updated to activate the array, all the implied modifications | |
1388 | * will just happen. | |
1389 | */ | |
1390 | ||
1391 | if (strcmp(update, "grow") == 0) { | |
1392 | /* FIXME */ | |
1393 | } | |
1394 | if (strcmp(update, "resync") == 0) { | |
1395 | // info->resync_checkpoint = 0; | |
1396 | } | |
1397 | /* We ignore UUID updates as they make even less sense | |
1398 | * with DDF | |
1399 | */ | |
1400 | if (strcmp(update, "homehost") == 0) { | |
1401 | /* homehost is stored in controller->vendor_data, | |
1402 | * or it is when we are the vendor | |
1403 | */ | |
1404 | // if (info->vendor_is_local) | |
1405 | // strcpy(ddf->controller.vendor_data, homehost); | |
1406 | } | |
1407 | if (strcmp(update, "name") == 0) { | |
1408 | /* name is stored in virtual_entry->name */ | |
1409 | // memset(ve->name, ' ', 16); | |
1410 | // strncpy(ve->name, info->name, 16); | |
1411 | } | |
1412 | if (strcmp(update, "_reshape_progress") == 0) { | |
1413 | /* We don't support reshape yet */ | |
1414 | } | |
1415 | ||
1416 | // update_all_csum(ddf); | |
1417 | ||
1418 | return rv; | |
1419 | } | |
1420 | ||
5f8097be NB |
1421 | static void make_header_guid(char *guid) |
1422 | { | |
1423 | __u32 stamp; | |
1424 | int rfd; | |
1425 | /* Create a DDF Header of Virtual Disk GUID */ | |
1426 | ||
1427 | /* 24 bytes of fiction required. | |
1428 | * first 8 are a 'vendor-id' - "Linux-MD" | |
1429 | * next 8 are controller type.. how about 0X DEAD BEEF 0000 0000 | |
1430 | * Remaining 8 random number plus timestamp | |
1431 | */ | |
1432 | memcpy(guid, T10, sizeof(T10)); | |
1433 | stamp = __cpu_to_be32(0xdeadbeef); | |
1434 | memcpy(guid+8, &stamp, 4); | |
1435 | stamp = __cpu_to_be32(0); | |
1436 | memcpy(guid+12, &stamp, 4); | |
1437 | stamp = __cpu_to_be32(time(0) - DECADE); | |
1438 | memcpy(guid+16, &stamp, 4); | |
1439 | rfd = open("/dev/urandom", O_RDONLY); | |
1440 | if (rfd < 0 || read(rfd, &stamp, 4) != 4) | |
1441 | stamp = random(); | |
1442 | memcpy(guid+20, &stamp, 4); | |
1443 | if (rfd >= 0) close(rfd); | |
1444 | } | |
59e36268 | 1445 | |
78e44928 NB |
1446 | static int init_super_ddf_bvd(struct supertype *st, |
1447 | mdu_array_info_t *info, | |
1448 | unsigned long long size, | |
1449 | char *name, char *homehost, | |
1450 | int *uuid); | |
1451 | ||
a322f70c DW |
1452 | static int init_super_ddf(struct supertype *st, |
1453 | mdu_array_info_t *info, | |
1454 | unsigned long long size, char *name, char *homehost, | |
1455 | int *uuid) | |
1456 | { | |
1457 | /* This is primarily called by Create when creating a new array. | |
1458 | * We will then get add_to_super called for each component, and then | |
1459 | * write_init_super called to write it out to each device. | |
1460 | * For DDF, Create can create on fresh devices or on a pre-existing | |
1461 | * array. | |
1462 | * To create on a pre-existing array a different method will be called. | |
1463 | * This one is just for fresh drives. | |
1464 | * | |
1465 | * We need to create the entire 'ddf' structure which includes: | |
1466 | * DDF headers - these are easy. | |
1467 | * Controller data - a Sector describing this controller .. not that | |
1468 | * this is a controller exactly. | |
1469 | * Physical Disk Record - one entry per device, so | |
1470 | * leave plenty of space. | |
1471 | * Virtual Disk Records - again, just leave plenty of space. | |
1472 | * This just lists VDs, doesn't give details | |
1473 | * Config records - describes the VDs that use this disk | |
1474 | * DiskData - describes 'this' device. | |
1475 | * BadBlockManagement - empty | |
1476 | * Diag Space - empty | |
1477 | * Vendor Logs - Could we put bitmaps here? | |
1478 | * | |
1479 | */ | |
1480 | struct ddf_super *ddf; | |
1481 | char hostname[17]; | |
1482 | int hostlen; | |
a322f70c DW |
1483 | int max_phys_disks, max_virt_disks; |
1484 | unsigned long long sector; | |
1485 | int clen; | |
1486 | int i; | |
1487 | int pdsize, vdsize; | |
1488 | struct phys_disk *pd; | |
1489 | struct virtual_disk *vd; | |
1490 | ||
ba7eb04f NB |
1491 | if (!info) { |
1492 | st->sb = NULL; | |
1493 | return 0; | |
1494 | } | |
78e44928 NB |
1495 | if (st->sb) |
1496 | return init_super_ddf_bvd(st, info, size, name, homehost, | |
1497 | uuid); | |
ba7eb04f | 1498 | |
3d2c4fc7 DW |
1499 | if (posix_memalign((void**)&ddf, 512, sizeof(*ddf)) != 0) { |
1500 | fprintf(stderr, Name ": %s could not allocate superblock\n", __func__); | |
1501 | return 0; | |
1502 | } | |
6264b437 | 1503 | memset(ddf, 0, sizeof(*ddf)); |
a322f70c DW |
1504 | ddf->dlist = NULL; /* no physical disks yet */ |
1505 | ddf->conflist = NULL; /* No virtual disks yet */ | |
1506 | ||
1507 | /* At least 32MB *must* be reserved for the ddf. So let's just | |
1508 | * start 32MB from the end, and put the primary header there. | |
1509 | * Don't do secondary for now. | |
1510 | * We don't know exactly where that will be yet as it could be | |
1511 | * different on each device. To just set up the lengths. | |
1512 | * | |
1513 | */ | |
1514 | ||
1515 | ddf->anchor.magic = DDF_HEADER_MAGIC; | |
5f8097be | 1516 | make_header_guid(ddf->anchor.guid); |
a322f70c | 1517 | |
59e36268 | 1518 | memcpy(ddf->anchor.revision, DDF_REVISION_2, 8); |
a322f70c DW |
1519 | ddf->anchor.seq = __cpu_to_be32(1); |
1520 | ddf->anchor.timestamp = __cpu_to_be32(time(0) - DECADE); | |
1521 | ddf->anchor.openflag = 0xFF; | |
1522 | ddf->anchor.foreignflag = 0; | |
1523 | ddf->anchor.enforcegroups = 0; /* Is this best?? */ | |
1524 | ddf->anchor.pad0 = 0xff; | |
1525 | memset(ddf->anchor.pad1, 0xff, 12); | |
1526 | memset(ddf->anchor.header_ext, 0xff, 32); | |
1527 | ddf->anchor.primary_lba = ~(__u64)0; | |
1528 | ddf->anchor.secondary_lba = ~(__u64)0; | |
1529 | ddf->anchor.type = DDF_HEADER_ANCHOR; | |
1530 | memset(ddf->anchor.pad2, 0xff, 3); | |
1531 | ddf->anchor.workspace_len = __cpu_to_be32(32768); /* Must be reserved */ | |
1532 | ddf->anchor.workspace_lba = ~(__u64)0; /* Put this at bottom | |
1533 | of 32M reserved.. */ | |
1534 | max_phys_disks = 1023; /* Should be enough */ | |
1535 | ddf->anchor.max_pd_entries = __cpu_to_be16(max_phys_disks); | |
1536 | max_virt_disks = 255; | |
1537 | ddf->anchor.max_vd_entries = __cpu_to_be16(max_virt_disks); /* ?? */ | |
1538 | ddf->anchor.max_partitions = __cpu_to_be16(64); /* ?? */ | |
1539 | ddf->max_part = 64; | |
8c3b8c2c | 1540 | ddf->mppe = 256; |
59e36268 NB |
1541 | ddf->conf_rec_len = 1 + ROUND_UP(ddf->mppe * (4+8), 512)/512; |
1542 | ddf->anchor.config_record_len = __cpu_to_be16(ddf->conf_rec_len); | |
1543 | ddf->anchor.max_primary_element_entries = __cpu_to_be16(ddf->mppe); | |
a322f70c | 1544 | memset(ddf->anchor.pad3, 0xff, 54); |
a322f70c DW |
1545 | /* controller sections is one sector long immediately |
1546 | * after the ddf header */ | |
1547 | sector = 1; | |
1548 | ddf->anchor.controller_section_offset = __cpu_to_be32(sector); | |
1549 | ddf->anchor.controller_section_length = __cpu_to_be32(1); | |
1550 | sector += 1; | |
1551 | ||
1552 | /* phys is 8 sectors after that */ | |
1553 | pdsize = ROUND_UP(sizeof(struct phys_disk) + | |
1554 | sizeof(struct phys_disk_entry)*max_phys_disks, | |
1555 | 512); | |
1556 | switch(pdsize/512) { | |
1557 | case 2: case 8: case 32: case 128: case 512: break; | |
1558 | default: abort(); | |
1559 | } | |
1560 | ddf->anchor.phys_section_offset = __cpu_to_be32(sector); | |
1561 | ddf->anchor.phys_section_length = | |
1562 | __cpu_to_be32(pdsize/512); /* max_primary_element_entries/8 */ | |
1563 | sector += pdsize/512; | |
1564 | ||
1565 | /* virt is another 32 sectors */ | |
1566 | vdsize = ROUND_UP(sizeof(struct virtual_disk) + | |
1567 | sizeof(struct virtual_entry) * max_virt_disks, | |
1568 | 512); | |
1569 | switch(vdsize/512) { | |
1570 | case 2: case 8: case 32: case 128: case 512: break; | |
1571 | default: abort(); | |
1572 | } | |
1573 | ddf->anchor.virt_section_offset = __cpu_to_be32(sector); | |
1574 | ddf->anchor.virt_section_length = | |
1575 | __cpu_to_be32(vdsize/512); /* max_vd_entries/8 */ | |
1576 | sector += vdsize/512; | |
1577 | ||
59e36268 | 1578 | clen = ddf->conf_rec_len * (ddf->max_part+1); |
a322f70c DW |
1579 | ddf->anchor.config_section_offset = __cpu_to_be32(sector); |
1580 | ddf->anchor.config_section_length = __cpu_to_be32(clen); | |
1581 | sector += clen; | |
1582 | ||
1583 | ddf->anchor.data_section_offset = __cpu_to_be32(sector); | |
1584 | ddf->anchor.data_section_length = __cpu_to_be32(1); | |
1585 | sector += 1; | |
1586 | ||
1587 | ddf->anchor.bbm_section_length = __cpu_to_be32(0); | |
1588 | ddf->anchor.bbm_section_offset = __cpu_to_be32(0xFFFFFFFF); | |
1589 | ddf->anchor.diag_space_length = __cpu_to_be32(0); | |
1590 | ddf->anchor.diag_space_offset = __cpu_to_be32(0xFFFFFFFF); | |
1591 | ddf->anchor.vendor_length = __cpu_to_be32(0); | |
1592 | ddf->anchor.vendor_offset = __cpu_to_be32(0xFFFFFFFF); | |
1593 | ||
1594 | memset(ddf->anchor.pad4, 0xff, 256); | |
1595 | ||
1596 | memcpy(&ddf->primary, &ddf->anchor, 512); | |
1597 | memcpy(&ddf->secondary, &ddf->anchor, 512); | |
1598 | ||
1599 | ddf->primary.openflag = 1; /* I guess.. */ | |
1600 | ddf->primary.type = DDF_HEADER_PRIMARY; | |
1601 | ||
1602 | ddf->secondary.openflag = 1; /* I guess.. */ | |
1603 | ddf->secondary.type = DDF_HEADER_SECONDARY; | |
1604 | ||
1605 | ddf->active = &ddf->primary; | |
1606 | ||
1607 | ddf->controller.magic = DDF_CONTROLLER_MAGIC; | |
1608 | ||
1609 | /* 24 more bytes of fiction required. | |
1610 | * first 8 are a 'vendor-id' - "Linux-MD" | |
1611 | * Remaining 16 are serial number.... maybe a hostname would do? | |
1612 | */ | |
1613 | memcpy(ddf->controller.guid, T10, sizeof(T10)); | |
1ba6bff9 DW |
1614 | gethostname(hostname, sizeof(hostname)); |
1615 | hostname[sizeof(hostname) - 1] = 0; | |
a322f70c DW |
1616 | hostlen = strlen(hostname); |
1617 | memcpy(ddf->controller.guid + 24 - hostlen, hostname, hostlen); | |
1618 | for (i = strlen(T10) ; i+hostlen < 24; i++) | |
1619 | ddf->controller.guid[i] = ' '; | |
1620 | ||
1621 | ddf->controller.type.vendor_id = __cpu_to_be16(0xDEAD); | |
1622 | ddf->controller.type.device_id = __cpu_to_be16(0xBEEF); | |
1623 | ddf->controller.type.sub_vendor_id = 0; | |
1624 | ddf->controller.type.sub_device_id = 0; | |
1625 | memcpy(ddf->controller.product_id, "What Is My PID??", 16); | |
1626 | memset(ddf->controller.pad, 0xff, 8); | |
1627 | memset(ddf->controller.vendor_data, 0xff, 448); | |
1628 | ||
3d2c4fc7 DW |
1629 | if (posix_memalign((void**)&pd, 512, pdsize) != 0) { |
1630 | fprintf(stderr, Name ": %s could not allocate pd\n", __func__); | |
1631 | return 0; | |
1632 | } | |
6416d527 | 1633 | ddf->phys = pd; |
a322f70c DW |
1634 | ddf->pdsize = pdsize; |
1635 | ||
1636 | memset(pd, 0xff, pdsize); | |
1637 | memset(pd, 0, sizeof(*pd)); | |
1638 | pd->magic = DDF_PHYS_DATA_MAGIC; | |
1639 | pd->used_pdes = __cpu_to_be16(0); | |
1640 | pd->max_pdes = __cpu_to_be16(max_phys_disks); | |
1641 | memset(pd->pad, 0xff, 52); | |
1642 | ||
3d2c4fc7 DW |
1643 | if (posix_memalign((void**)&vd, 512, vdsize) != 0) { |
1644 | fprintf(stderr, Name ": %s could not allocate vd\n", __func__); | |
1645 | return 0; | |
1646 | } | |
6416d527 | 1647 | ddf->virt = vd; |
a322f70c DW |
1648 | ddf->vdsize = vdsize; |
1649 | memset(vd, 0, vdsize); | |
1650 | vd->magic = DDF_VIRT_RECORDS_MAGIC; | |
1651 | vd->populated_vdes = __cpu_to_be16(0); | |
1652 | vd->max_vdes = __cpu_to_be16(max_virt_disks); | |
1653 | memset(vd->pad, 0xff, 52); | |
1654 | ||
5f8097be NB |
1655 | for (i=0; i<max_virt_disks; i++) |
1656 | memset(&vd->entries[i], 0xff, sizeof(struct virtual_entry)); | |
1657 | ||
a322f70c | 1658 | st->sb = ddf; |
18a2f463 | 1659 | ddf->updates_pending = 1; |
a322f70c DW |
1660 | return 1; |
1661 | } | |
1662 | ||
5f8097be NB |
1663 | static int all_ff(char *guid) |
1664 | { | |
1665 | int i; | |
1666 | for (i = 0; i < DDF_GUID_LEN; i++) | |
1667 | if (guid[i] != (char)0xff) | |
1668 | return 0; | |
1669 | return 1; | |
1670 | } | |
1671 | static int chunk_to_shift(int chunksize) | |
1672 | { | |
1673 | return ffs(chunksize/512)-1; | |
1674 | } | |
1675 | ||
1676 | static int level_to_prl(int level) | |
1677 | { | |
1678 | switch (level) { | |
1679 | case LEVEL_LINEAR: return DDF_CONCAT; | |
1680 | case 0: return DDF_RAID0; | |
1681 | case 1: return DDF_RAID1; | |
1682 | case 4: return DDF_RAID4; | |
1683 | case 5: return DDF_RAID5; | |
1684 | case 6: return DDF_RAID6; | |
1685 | default: return -1; | |
1686 | } | |
1687 | } | |
1688 | static int layout_to_rlq(int level, int layout, int raiddisks) | |
1689 | { | |
1690 | switch(level) { | |
1691 | case 0: | |
1692 | return DDF_RAID0_SIMPLE; | |
1693 | case 1: | |
1694 | switch(raiddisks) { | |
1695 | case 2: return DDF_RAID1_SIMPLE; | |
1696 | case 3: return DDF_RAID1_MULTI; | |
1697 | default: return -1; | |
1698 | } | |
1699 | case 4: | |
1700 | switch(layout) { | |
1701 | case 0: return DDF_RAID4_N; | |
1702 | } | |
1703 | break; | |
1704 | case 5: | |
1705 | case 6: | |
1706 | switch(layout) { | |
1707 | case ALGORITHM_LEFT_ASYMMETRIC: | |
1708 | return DDF_RAID5_N_RESTART; | |
1709 | case ALGORITHM_RIGHT_ASYMMETRIC: | |
59e36268 NB |
1710 | if (level == 5) |
1711 | return DDF_RAID5_0_RESTART; | |
1712 | else | |
1713 | return DDF_RAID6_0_RESTART; | |
5f8097be NB |
1714 | case ALGORITHM_LEFT_SYMMETRIC: |
1715 | return DDF_RAID5_N_CONTINUE; | |
1716 | case ALGORITHM_RIGHT_SYMMETRIC: | |
1717 | return -1; /* not mentioned in standard */ | |
1718 | } | |
1719 | } | |
1720 | return -1; | |
1721 | } | |
1722 | ||
598f0d58 NB |
1723 | static int rlq_to_layout(int rlq, int prl, int raiddisks) |
1724 | { | |
1725 | switch(prl) { | |
1726 | case DDF_RAID0: | |
1727 | return 0; /* hopefully rlq == DDF_RAID0_SIMPLE */ | |
1728 | case DDF_RAID1: | |
1729 | return 0; /* hopefully rlq == SIMPLE or MULTI depending | |
1730 | on raiddisks*/ | |
1731 | case DDF_RAID4: | |
1732 | switch(rlq) { | |
1733 | case DDF_RAID4_N: | |
1734 | return 0; | |
1735 | default: | |
1736 | /* not supported */ | |
1737 | return -1; /* FIXME this isn't checked */ | |
1738 | } | |
1739 | case DDF_RAID5: | |
598f0d58 NB |
1740 | switch(rlq) { |
1741 | case DDF_RAID5_N_RESTART: | |
1742 | return ALGORITHM_LEFT_ASYMMETRIC; | |
1743 | case DDF_RAID5_0_RESTART: | |
1744 | return ALGORITHM_RIGHT_ASYMMETRIC; | |
1745 | case DDF_RAID5_N_CONTINUE: | |
1746 | return ALGORITHM_LEFT_SYMMETRIC; | |
1747 | default: | |
1748 | return -1; | |
1749 | } | |
59e36268 NB |
1750 | case DDF_RAID6: |
1751 | switch(rlq) { | |
1752 | case DDF_RAID5_N_RESTART: | |
1753 | return ALGORITHM_LEFT_ASYMMETRIC; | |
1754 | case DDF_RAID6_0_RESTART: | |
1755 | return ALGORITHM_RIGHT_ASYMMETRIC; | |
1756 | case DDF_RAID5_N_CONTINUE: | |
1757 | return ALGORITHM_LEFT_SYMMETRIC; | |
1758 | default: | |
1759 | return -1; | |
1760 | } | |
598f0d58 NB |
1761 | } |
1762 | return -1; | |
1763 | } | |
1764 | ||
0e600426 | 1765 | #ifndef MDASSEMBLE |
59e36268 NB |
1766 | struct extent { |
1767 | unsigned long long start, size; | |
1768 | }; | |
78e44928 | 1769 | static int cmp_extent(const void *av, const void *bv) |
59e36268 NB |
1770 | { |
1771 | const struct extent *a = av; | |
1772 | const struct extent *b = bv; | |
1773 | if (a->start < b->start) | |
1774 | return -1; | |
1775 | if (a->start > b->start) | |
1776 | return 1; | |
1777 | return 0; | |
1778 | } | |
1779 | ||
78e44928 | 1780 | static struct extent *get_extents(struct ddf_super *ddf, struct dl *dl) |
59e36268 NB |
1781 | { |
1782 | /* find a list of used extents on the give physical device | |
1783 | * (dnum) of the given ddf. | |
1784 | * Return a malloced array of 'struct extent' | |
1785 | ||
1786 | FIXME ignore DDF_Legacy devices? | |
1787 | ||
1788 | */ | |
1789 | struct extent *rv; | |
1790 | int n = 0; | |
1791 | int i, j; | |
1792 | ||
1793 | rv = malloc(sizeof(struct extent) * (ddf->max_part + 2)); | |
1794 | if (!rv) | |
1795 | return NULL; | |
1796 | ||
1797 | for (i = 0; i < ddf->max_part; i++) { | |
1798 | struct vcl *v = dl->vlist[i]; | |
1799 | if (v == NULL) | |
1800 | continue; | |
1801 | for (j=0; j < v->conf.prim_elmnt_count; j++) | |
1802 | if (v->conf.phys_refnum[j] == dl->disk.refnum) { | |
1803 | /* This device plays role 'j' in 'v'. */ | |
1804 | rv[n].start = __be64_to_cpu(v->lba_offset[j]); | |
1805 | rv[n].size = __be64_to_cpu(v->conf.blocks); | |
1806 | n++; | |
1807 | break; | |
1808 | } | |
1809 | } | |
1810 | qsort(rv, n, sizeof(*rv), cmp_extent); | |
1811 | ||
1812 | rv[n].start = __be64_to_cpu(ddf->phys->entries[dl->pdnum].config_size); | |
1813 | rv[n].size = 0; | |
1814 | return rv; | |
1815 | } | |
0e600426 | 1816 | #endif |
59e36268 | 1817 | |
5f8097be NB |
1818 | static int init_super_ddf_bvd(struct supertype *st, |
1819 | mdu_array_info_t *info, | |
1820 | unsigned long long size, | |
1821 | char *name, char *homehost, | |
1822 | int *uuid) | |
1823 | { | |
1824 | /* We are creating a BVD inside a pre-existing container. | |
1825 | * so st->sb is already set. | |
1826 | * We need to create a new vd_config and a new virtual_entry | |
1827 | */ | |
1828 | struct ddf_super *ddf = st->sb; | |
1829 | int venum; | |
1830 | struct virtual_entry *ve; | |
1831 | struct vcl *vcl; | |
1832 | struct vd_config *vc; | |
5f8097be NB |
1833 | |
1834 | if (__be16_to_cpu(ddf->virt->populated_vdes) | |
1835 | >= __be16_to_cpu(ddf->virt->max_vdes)) { | |
1836 | fprintf(stderr, Name": This ddf already has the " | |
1837 | "maximum of %d virtual devices\n", | |
1838 | __be16_to_cpu(ddf->virt->max_vdes)); | |
1839 | return 0; | |
1840 | } | |
1841 | ||
1842 | for (venum = 0; venum < __be16_to_cpu(ddf->virt->max_vdes); venum++) | |
1843 | if (all_ff(ddf->virt->entries[venum].guid)) | |
1844 | break; | |
1845 | if (venum == __be16_to_cpu(ddf->virt->max_vdes)) { | |
1846 | fprintf(stderr, Name ": Cannot find spare slot for " | |
1847 | "virtual disk - DDF is corrupt\n"); | |
1848 | return 0; | |
1849 | } | |
1850 | ve = &ddf->virt->entries[venum]; | |
1851 | ||
1852 | /* A Virtual Disk GUID contains the T10 Vendor ID, controller type, | |
1853 | * timestamp, random number | |
1854 | */ | |
1855 | make_header_guid(ve->guid); | |
1856 | ve->unit = __cpu_to_be16(info->md_minor); | |
1857 | ve->pad0 = 0xFFFF; | |
1858 | ve->guid_crc = crc32(0, (unsigned char*)ddf->anchor.guid, DDF_GUID_LEN); | |
1859 | ve->type = 0; | |
7a7cc504 NB |
1860 | ve->state = DDF_state_degraded; /* Will be modified as devices are added */ |
1861 | if (info->state & 1) /* clean */ | |
1862 | ve->init_state = DDF_init_full; | |
1863 | else | |
1864 | ve->init_state = DDF_init_not; | |
1865 | ||
5f8097be NB |
1866 | memset(ve->pad1, 0xff, 14); |
1867 | memset(ve->name, ' ', 16); | |
1868 | if (name) | |
1869 | strncpy(ve->name, name, 16); | |
1870 | ddf->virt->populated_vdes = | |
1871 | __cpu_to_be16(__be16_to_cpu(ddf->virt->populated_vdes)+1); | |
1872 | ||
1873 | /* Now create a new vd_config */ | |
3d2c4fc7 DW |
1874 | if (posix_memalign((void**)&vcl, 512, |
1875 | (offsetof(struct vcl, conf) + ddf->conf_rec_len * 512)) != 0) { | |
1876 | fprintf(stderr, Name ": %s could not allocate vd_config\n", __func__); | |
1877 | return 0; | |
1878 | } | |
8c3b8c2c | 1879 | vcl->lba_offset = (__u64*) &vcl->conf.phys_refnum[ddf->mppe]; |
59e36268 | 1880 | vcl->vcnum = venum; |
f7e7067b | 1881 | sprintf(st->subarray, "%d", venum); |
59e36268 | 1882 | vcl->block_sizes = NULL; /* FIXME not for CONCAT */ |
5f8097be NB |
1883 | |
1884 | vc = &vcl->conf; | |
1885 | ||
1886 | vc->magic = DDF_VD_CONF_MAGIC; | |
1887 | memcpy(vc->guid, ve->guid, DDF_GUID_LEN); | |
1888 | vc->timestamp = __cpu_to_be32(time(0)-DECADE); | |
1889 | vc->seqnum = __cpu_to_be32(1); | |
1890 | memset(vc->pad0, 0xff, 24); | |
1891 | vc->prim_elmnt_count = __cpu_to_be16(info->raid_disks); | |
1892 | vc->chunk_shift = chunk_to_shift(info->chunk_size); | |
1893 | vc->prl = level_to_prl(info->level); | |
1894 | vc->rlq = layout_to_rlq(info->level, info->layout, info->raid_disks); | |
1895 | vc->sec_elmnt_count = 1; | |
1896 | vc->sec_elmnt_seq = 0; | |
1897 | vc->srl = 0; | |
1898 | vc->blocks = __cpu_to_be64(info->size * 2); | |
1899 | vc->array_blocks = __cpu_to_be64( | |
1900 | calc_array_size(info->level, info->raid_disks, info->layout, | |
1901 | info->chunk_size, info->size*2)); | |
1902 | memset(vc->pad1, 0xff, 8); | |
1903 | vc->spare_refs[0] = 0xffffffff; | |
1904 | vc->spare_refs[1] = 0xffffffff; | |
1905 | vc->spare_refs[2] = 0xffffffff; | |
1906 | vc->spare_refs[3] = 0xffffffff; | |
1907 | vc->spare_refs[4] = 0xffffffff; | |
1908 | vc->spare_refs[5] = 0xffffffff; | |
1909 | vc->spare_refs[6] = 0xffffffff; | |
1910 | vc->spare_refs[7] = 0xffffffff; | |
1911 | memset(vc->cache_pol, 0, 8); | |
1912 | vc->bg_rate = 0x80; | |
1913 | memset(vc->pad2, 0xff, 3); | |
1914 | memset(vc->pad3, 0xff, 52); | |
1915 | memset(vc->pad4, 0xff, 192); | |
1916 | memset(vc->v0, 0xff, 32); | |
1917 | memset(vc->v1, 0xff, 32); | |
1918 | memset(vc->v2, 0xff, 16); | |
1919 | memset(vc->v3, 0xff, 16); | |
1920 | memset(vc->vendor, 0xff, 32); | |
598f0d58 | 1921 | |
8c3b8c2c NB |
1922 | memset(vc->phys_refnum, 0xff, 4*ddf->mppe); |
1923 | memset(vc->phys_refnum+(ddf->mppe * 4), 0x00, 8*ddf->mppe); | |
5f8097be NB |
1924 | |
1925 | vcl->next = ddf->conflist; | |
1926 | ddf->conflist = vcl; | |
d2ca6449 | 1927 | ddf->currentconf = vcl; |
18a2f463 | 1928 | ddf->updates_pending = 1; |
5f8097be NB |
1929 | return 1; |
1930 | } | |
1931 | ||
0e600426 | 1932 | #ifndef MDASSEMBLE |
5f8097be NB |
1933 | static void add_to_super_ddf_bvd(struct supertype *st, |
1934 | mdu_disk_info_t *dk, int fd, char *devname) | |
1935 | { | |
1936 | /* fd and devname identify a device with-in the ddf container (st). | |
1937 | * dk identifies a location in the new BVD. | |
1938 | * We need to find suitable free space in that device and update | |
1939 | * the phys_refnum and lba_offset for the newly created vd_config. | |
1940 | * We might also want to update the type in the phys_disk | |
5575e7d9 | 1941 | * section. |
5f8097be NB |
1942 | */ |
1943 | struct dl *dl; | |
1944 | struct ddf_super *ddf = st->sb; | |
1945 | struct vd_config *vc; | |
1946 | __u64 *lba_offset; | |
7a7cc504 | 1947 | int working; |
5575e7d9 | 1948 | int i; |
59e36268 NB |
1949 | unsigned long long blocks, pos, esize; |
1950 | struct extent *ex; | |
5f8097be NB |
1951 | |
1952 | for (dl = ddf->dlist; dl ; dl = dl->next) | |
1953 | if (dl->major == dk->major && | |
1954 | dl->minor == dk->minor) | |
1955 | break; | |
1956 | if (!dl || ! (dk->state & (1<<MD_DISK_SYNC))) | |
1957 | return; | |
1958 | ||
d2ca6449 NB |
1959 | vc = &ddf->currentconf->conf; |
1960 | lba_offset = ddf->currentconf->lba_offset; | |
59e36268 NB |
1961 | |
1962 | ex = get_extents(ddf, dl); | |
1963 | if (!ex) | |
1964 | return; | |
1965 | ||
1966 | i = 0; pos = 0; | |
1967 | blocks = __be64_to_cpu(vc->blocks); | |
d2ca6449 NB |
1968 | if (ddf->currentconf->block_sizes) |
1969 | blocks = ddf->currentconf->block_sizes[dk->raid_disk]; | |
59e36268 NB |
1970 | |
1971 | do { | |
1972 | esize = ex[i].start - pos; | |
1973 | if (esize >= blocks) | |
1974 | break; | |
1975 | pos = ex[i].start + ex[i].size; | |
1976 | i++; | |
1977 | } while (ex[i-1].size); | |
1978 | ||
1979 | free(ex); | |
1980 | if (esize < blocks) | |
1981 | return; | |
1982 | ||
d2ca6449 | 1983 | ddf->currentdev = dk->raid_disk; |
5f8097be | 1984 | vc->phys_refnum[dk->raid_disk] = dl->disk.refnum; |
59e36268 | 1985 | lba_offset[dk->raid_disk] = __cpu_to_be64(pos); |
5f8097be | 1986 | |
5575e7d9 NB |
1987 | for (i=0; i < ddf->max_part ; i++) |
1988 | if (dl->vlist[i] == NULL) | |
1989 | break; | |
1990 | if (i == ddf->max_part) | |
1991 | return; | |
d2ca6449 | 1992 | dl->vlist[i] = ddf->currentconf; |
5f8097be NB |
1993 | |
1994 | dl->fd = fd; | |
1995 | dl->devname = devname; | |
7a7cc504 NB |
1996 | |
1997 | /* Check how many working raid_disks, and if we can mark | |
1998 | * array as optimal yet | |
1999 | */ | |
2000 | working = 0; | |
5575e7d9 | 2001 | |
7a7cc504 NB |
2002 | for (i=0; i < __be16_to_cpu(vc->prim_elmnt_count); i++) |
2003 | if (vc->phys_refnum[i] != 0xffffffff) | |
2004 | working++; | |
59e36268 | 2005 | |
5575e7d9 | 2006 | /* Find which virtual_entry */ |
d2ca6449 | 2007 | i = ddf->currentconf->vcnum; |
7a7cc504 | 2008 | if (working == __be16_to_cpu(vc->prim_elmnt_count)) |
5575e7d9 NB |
2009 | ddf->virt->entries[i].state = |
2010 | (ddf->virt->entries[i].state & ~DDF_state_mask) | |
7a7cc504 NB |
2011 | | DDF_state_optimal; |
2012 | ||
2013 | if (vc->prl == DDF_RAID6 && | |
2014 | working+1 == __be16_to_cpu(vc->prim_elmnt_count)) | |
5575e7d9 NB |
2015 | ddf->virt->entries[i].state = |
2016 | (ddf->virt->entries[i].state & ~DDF_state_mask) | |
7a7cc504 | 2017 | | DDF_state_part_optimal; |
5575e7d9 NB |
2018 | |
2019 | ddf->phys->entries[dl->pdnum].type &= ~__cpu_to_be16(DDF_Global_Spare); | |
2020 | ddf->phys->entries[dl->pdnum].type |= __cpu_to_be16(DDF_Active_in_VD); | |
18a2f463 | 2021 | ddf->updates_pending = 1; |
5f8097be NB |
2022 | } |
2023 | ||
a322f70c DW |
2024 | /* add a device to a container, either while creating it or while |
2025 | * expanding a pre-existing container | |
2026 | */ | |
2027 | static void add_to_super_ddf(struct supertype *st, | |
2028 | mdu_disk_info_t *dk, int fd, char *devname) | |
2029 | { | |
2030 | struct ddf_super *ddf = st->sb; | |
2031 | struct dl *dd; | |
2032 | time_t now; | |
2033 | struct tm *tm; | |
2034 | unsigned long long size; | |
2035 | struct phys_disk_entry *pde; | |
2036 | int n, i; | |
2037 | struct stat stb; | |
2038 | ||
78e44928 NB |
2039 | if (ddf->currentconf) { |
2040 | add_to_super_ddf_bvd(st, dk, fd, devname); | |
2041 | return; | |
2042 | } | |
2043 | ||
a322f70c DW |
2044 | /* This is device numbered dk->number. We need to create |
2045 | * a phys_disk entry and a more detailed disk_data entry. | |
2046 | */ | |
2047 | fstat(fd, &stb); | |
3d2c4fc7 DW |
2048 | if (posix_memalign((void**)&dd, 512, |
2049 | sizeof(*dd) + sizeof(dd->vlist[0]) * ddf->max_part) != 0) { | |
2050 | fprintf(stderr, Name | |
2051 | ": %s could allocate buffer for new disk, aborting\n", | |
2052 | __func__); | |
2053 | abort(); | |
2054 | } | |
a322f70c DW |
2055 | dd->major = major(stb.st_rdev); |
2056 | dd->minor = minor(stb.st_rdev); | |
2057 | dd->devname = devname; | |
a322f70c | 2058 | dd->fd = fd; |
b2280677 | 2059 | dd->spare = NULL; |
a322f70c DW |
2060 | |
2061 | dd->disk.magic = DDF_PHYS_DATA_MAGIC; | |
2062 | now = time(0); | |
2063 | tm = localtime(&now); | |
2064 | sprintf(dd->disk.guid, "%8s%04d%02d%02d", | |
2065 | T10, tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday); | |
2066 | *(__u32*)(dd->disk.guid + 16) = random(); | |
2067 | *(__u32*)(dd->disk.guid + 20) = random(); | |
2068 | ||
59e36268 NB |
2069 | do { |
2070 | /* Cannot be bothered finding a CRC of some irrelevant details*/ | |
2071 | dd->disk.refnum = random(); | |
2072 | for (i = __be16_to_cpu(ddf->active->max_pd_entries) - 1; | |
2073 | i >= 0; i--) | |
2074 | if (ddf->phys->entries[i].refnum == dd->disk.refnum) | |
2075 | break; | |
2076 | } while (i >= 0); | |
2077 | ||
a322f70c DW |
2078 | dd->disk.forced_ref = 1; |
2079 | dd->disk.forced_guid = 1; | |
2080 | memset(dd->disk.vendor, ' ', 32); | |
2081 | memcpy(dd->disk.vendor, "Linux", 5); | |
2082 | memset(dd->disk.pad, 0xff, 442); | |
b2280677 | 2083 | for (i = 0; i < ddf->max_part ; i++) |
a322f70c DW |
2084 | dd->vlist[i] = NULL; |
2085 | ||
2086 | n = __be16_to_cpu(ddf->phys->used_pdes); | |
2087 | pde = &ddf->phys->entries[n]; | |
5575e7d9 NB |
2088 | dd->pdnum = n; |
2089 | ||
2cc2983d N |
2090 | if (st->update_tail) { |
2091 | int len = (sizeof(struct phys_disk) + | |
2092 | sizeof(struct phys_disk_entry)); | |
2093 | struct phys_disk *pd; | |
2094 | ||
2095 | pd = malloc(len); | |
2096 | pd->magic = DDF_PHYS_RECORDS_MAGIC; | |
2097 | pd->used_pdes = __cpu_to_be16(n); | |
2098 | pde = &pd->entries[0]; | |
2099 | dd->mdupdate = pd; | |
2100 | } else { | |
2101 | n++; | |
2102 | ddf->phys->used_pdes = __cpu_to_be16(n); | |
2103 | } | |
a322f70c DW |
2104 | |
2105 | memcpy(pde->guid, dd->disk.guid, DDF_GUID_LEN); | |
2106 | pde->refnum = dd->disk.refnum; | |
5575e7d9 | 2107 | pde->type = __cpu_to_be16(DDF_Forced_PD_GUID | DDF_Global_Spare); |
a322f70c DW |
2108 | pde->state = __cpu_to_be16(DDF_Online); |
2109 | get_dev_size(fd, NULL, &size); | |
2110 | /* We are required to reserve 32Meg, and record the size in sectors */ | |
2111 | pde->config_size = __cpu_to_be64( (size - 32*1024*1024) / 512); | |
2112 | sprintf(pde->path, "%17.17s","Information: nil") ; | |
2113 | memset(pde->pad, 0xff, 6); | |
2114 | ||
d2ca6449 | 2115 | dd->size = size >> 9; |
2cc2983d N |
2116 | if (st->update_tail) { |
2117 | dd->next = ddf->add_list; | |
2118 | ddf->add_list = dd; | |
2119 | } else { | |
2120 | dd->next = ddf->dlist; | |
2121 | ddf->dlist = dd; | |
2122 | ddf->updates_pending = 1; | |
2123 | } | |
a322f70c DW |
2124 | } |
2125 | ||
2126 | /* | |
2127 | * This is the write_init_super method for a ddf container. It is | |
2128 | * called when creating a container or adding another device to a | |
2129 | * container. | |
2130 | */ | |
2131 | ||
6416d527 | 2132 | static unsigned char null_conf[4096+512]; |
18a2f463 | 2133 | |
7a7cc504 | 2134 | static int __write_init_super_ddf(struct supertype *st, int do_close) |
a322f70c DW |
2135 | { |
2136 | ||
2137 | struct ddf_super *ddf = st->sb; | |
2138 | int i; | |
2139 | struct dl *d; | |
2140 | int n_config; | |
2141 | int conf_size; | |
175593bf DW |
2142 | int attempts = 0; |
2143 | int successes = 0; | |
a322f70c DW |
2144 | unsigned long long size, sector; |
2145 | ||
175593bf DW |
2146 | /* try to write updated metadata, |
2147 | * if we catch a failure move on to the next disk | |
2148 | */ | |
a322f70c DW |
2149 | for (d = ddf->dlist; d; d=d->next) { |
2150 | int fd = d->fd; | |
2151 | ||
2152 | if (fd < 0) | |
2153 | continue; | |
2154 | ||
175593bf | 2155 | attempts++; |
a322f70c DW |
2156 | /* We need to fill in the primary, (secondary) and workspace |
2157 | * lba's in the headers, set their checksums, | |
2158 | * Also checksum phys, virt.... | |
2159 | * | |
2160 | * Then write everything out, finally the anchor is written. | |
2161 | */ | |
2162 | get_dev_size(fd, NULL, &size); | |
2163 | size /= 512; | |
2164 | ddf->anchor.workspace_lba = __cpu_to_be64(size - 32*1024*2); | |
2165 | ddf->anchor.primary_lba = __cpu_to_be64(size - 16*1024*2); | |
2166 | ddf->anchor.seq = __cpu_to_be32(1); | |
2167 | memcpy(&ddf->primary, &ddf->anchor, 512); | |
2168 | memcpy(&ddf->secondary, &ddf->anchor, 512); | |
2169 | ||
2170 | ddf->anchor.openflag = 0xFF; /* 'open' means nothing */ | |
2171 | ddf->anchor.seq = 0xFFFFFFFF; /* no sequencing in anchor */ | |
2172 | ddf->anchor.crc = calc_crc(&ddf->anchor, 512); | |
2173 | ||
2174 | ddf->primary.openflag = 0; | |
2175 | ddf->primary.type = DDF_HEADER_PRIMARY; | |
2176 | ||
2177 | ddf->secondary.openflag = 0; | |
2178 | ddf->secondary.type = DDF_HEADER_SECONDARY; | |
2179 | ||
2180 | ddf->primary.crc = calc_crc(&ddf->primary, 512); | |
2181 | ddf->secondary.crc = calc_crc(&ddf->secondary, 512); | |
2182 | ||
2183 | sector = size - 16*1024*2; | |
2184 | lseek64(fd, sector<<9, 0); | |
175593bf DW |
2185 | if (write(fd, &ddf->primary, 512) < 0) |
2186 | continue; | |
a322f70c DW |
2187 | |
2188 | ddf->controller.crc = calc_crc(&ddf->controller, 512); | |
175593bf DW |
2189 | if (write(fd, &ddf->controller, 512) < 0) |
2190 | continue; | |
a322f70c DW |
2191 | |
2192 | ddf->phys->crc = calc_crc(ddf->phys, ddf->pdsize); | |
2193 | ||
175593bf DW |
2194 | if (write(fd, ddf->phys, ddf->pdsize) < 0) |
2195 | continue; | |
a322f70c DW |
2196 | |
2197 | ddf->virt->crc = calc_crc(ddf->virt, ddf->vdsize); | |
175593bf DW |
2198 | if (write(fd, ddf->virt, ddf->vdsize) < 0) |
2199 | continue; | |
a322f70c DW |
2200 | |
2201 | /* Now write lots of config records. */ | |
8c3b8c2c NB |
2202 | n_config = ddf->max_part; |
2203 | conf_size = ddf->conf_rec_len * 512; | |
a322f70c DW |
2204 | for (i = 0 ; i <= n_config ; i++) { |
2205 | struct vcl *c = d->vlist[i]; | |
b2280677 NB |
2206 | if (i == n_config) |
2207 | c = (struct vcl*)d->spare; | |
a322f70c DW |
2208 | |
2209 | if (c) { | |
2210 | c->conf.crc = calc_crc(&c->conf, conf_size); | |
175593bf DW |
2211 | if (write(fd, &c->conf, conf_size) < 0) |
2212 | break; | |
a322f70c | 2213 | } else { |
6416d527 | 2214 | char *null_aligned = (char*)((((unsigned long)null_conf)+511)&~511UL); |
18a2f463 NB |
2215 | if (null_conf[0] != 0xff) |
2216 | memset(null_conf, 0xff, sizeof(null_conf)); | |
2217 | int togo = conf_size; | |
6416d527 | 2218 | while (togo > sizeof(null_conf)-512) { |
175593bf DW |
2219 | if (write(fd, null_aligned, sizeof(null_conf)-512) < 0) |
2220 | break; | |
6416d527 | 2221 | togo -= sizeof(null_conf)-512; |
18a2f463 | 2222 | } |
175593bf DW |
2223 | if (write(fd, null_aligned, togo) < 0) |
2224 | break; | |
a322f70c DW |
2225 | } |
2226 | } | |
175593bf DW |
2227 | if (i <= n_config) |
2228 | continue; | |
a322f70c | 2229 | d->disk.crc = calc_crc(&d->disk, 512); |
175593bf DW |
2230 | if (write(fd, &d->disk, 512) < 0) |
2231 | continue; | |
a322f70c DW |
2232 | |
2233 | /* Maybe do the same for secondary */ | |
2234 | ||
2235 | lseek64(fd, (size-1)*512, SEEK_SET); | |
175593bf DW |
2236 | if (write(fd, &ddf->anchor, 512) < 0) |
2237 | continue; | |
2238 | successes++; | |
2239 | } | |
2240 | ||
2241 | if (do_close) | |
2242 | for (d = ddf->dlist; d; d=d->next) { | |
2243 | close(d->fd); | |
7a7cc504 NB |
2244 | d->fd = -1; |
2245 | } | |
175593bf DW |
2246 | |
2247 | return attempts != successes; | |
a322f70c | 2248 | } |
7a7cc504 NB |
2249 | |
2250 | static int write_init_super_ddf(struct supertype *st) | |
2251 | { | |
edd8d13c NB |
2252 | |
2253 | if (st->update_tail) { | |
2254 | /* queue the virtual_disk and vd_config as metadata updates */ | |
2255 | struct virtual_disk *vd; | |
2256 | struct vd_config *vc; | |
2257 | struct ddf_super *ddf = st->sb; | |
2258 | int len; | |
2259 | ||
2cc2983d N |
2260 | if (!ddf->currentconf) { |
2261 | int len = (sizeof(struct phys_disk) + | |
2262 | sizeof(struct phys_disk_entry)); | |
2263 | ||
2264 | /* adding a disk to the container. */ | |
2265 | if (!ddf->add_list) | |
2266 | return 0; | |
2267 | ||
2268 | append_metadata_update(st, ddf->add_list->mdupdate, len); | |
2269 | ddf->add_list->mdupdate = NULL; | |
2270 | return 0; | |
2271 | } | |
2272 | ||
2273 | /* Newly created VD */ | |
2274 | ||
edd8d13c NB |
2275 | /* First the virtual disk. We have a slightly fake header */ |
2276 | len = sizeof(struct virtual_disk) + sizeof(struct virtual_entry); | |
2277 | vd = malloc(len); | |
2278 | *vd = *ddf->virt; | |
2279 | vd->entries[0] = ddf->virt->entries[ddf->currentconf->vcnum]; | |
2280 | vd->populated_vdes = __cpu_to_be16(ddf->currentconf->vcnum); | |
2281 | append_metadata_update(st, vd, len); | |
2282 | ||
2283 | /* Then the vd_config */ | |
2284 | len = ddf->conf_rec_len * 512; | |
2285 | vc = malloc(len); | |
2286 | memcpy(vc, &ddf->currentconf->conf, len); | |
2287 | append_metadata_update(st, vc, len); | |
2288 | ||
2289 | /* FIXME I need to close the fds! */ | |
2290 | return 0; | |
2291 | } else | |
2292 | return __write_init_super_ddf(st, 1); | |
7a7cc504 NB |
2293 | } |
2294 | ||
a322f70c DW |
2295 | #endif |
2296 | ||
2297 | static __u64 avail_size_ddf(struct supertype *st, __u64 devsize) | |
2298 | { | |
2299 | /* We must reserve the last 32Meg */ | |
2300 | if (devsize <= 32*1024*2) | |
2301 | return 0; | |
2302 | return devsize - 32*1024*2; | |
2303 | } | |
2304 | ||
2305 | #ifndef MDASSEMBLE | |
2c514b71 NB |
2306 | static int |
2307 | validate_geometry_ddf_container(struct supertype *st, | |
2308 | int level, int layout, int raiddisks, | |
2309 | int chunk, unsigned long long size, | |
2310 | char *dev, unsigned long long *freesize, | |
2311 | int verbose); | |
78e44928 NB |
2312 | |
2313 | static int validate_geometry_ddf_bvd(struct supertype *st, | |
2314 | int level, int layout, int raiddisks, | |
2315 | int chunk, unsigned long long size, | |
2c514b71 NB |
2316 | char *dev, unsigned long long *freesize, |
2317 | int verbose); | |
78e44928 NB |
2318 | |
2319 | static int validate_geometry_ddf(struct supertype *st, | |
2c514b71 NB |
2320 | int level, int layout, int raiddisks, |
2321 | int chunk, unsigned long long size, | |
2322 | char *dev, unsigned long long *freesize, | |
2323 | int verbose) | |
a322f70c DW |
2324 | { |
2325 | int fd; | |
2326 | struct mdinfo *sra; | |
2327 | int cfd; | |
2328 | ||
2329 | /* ddf potentially supports lots of things, but it depends on | |
2330 | * what devices are offered (and maybe kernel version?) | |
2331 | * If given unused devices, we will make a container. | |
2332 | * If given devices in a container, we will make a BVD. | |
2333 | * If given BVDs, we make an SVD, changing all the GUIDs in the process. | |
2334 | */ | |
2335 | ||
2336 | if (level == LEVEL_CONTAINER) { | |
78e44928 NB |
2337 | /* Must be a fresh device to add to a container */ |
2338 | return validate_geometry_ddf_container(st, level, layout, | |
2c514b71 NB |
2339 | raiddisks, chunk, |
2340 | size, dev, freesize, | |
2341 | verbose); | |
5f8097be NB |
2342 | } |
2343 | ||
2344 | if (st->sb) { | |
78e44928 NB |
2345 | /* A container has already been opened, so we are |
2346 | * creating in there. Maybe a BVD, maybe an SVD. | |
2347 | * Should make a distinction one day. | |
2348 | */ | |
2349 | return validate_geometry_ddf_bvd(st, level, layout, raiddisks, | |
2c514b71 NB |
2350 | chunk, size, dev, freesize, |
2351 | verbose); | |
a322f70c | 2352 | } |
78e44928 NB |
2353 | if (!dev) { |
2354 | /* Initial sanity check. Exclude illegal levels. */ | |
2355 | int i; | |
2356 | for (i=0; ddf_level_num[i].num1 != MAXINT; i++) | |
2357 | if (ddf_level_num[i].num2 == level) | |
2358 | break; | |
2359 | if (ddf_level_num[i].num1 == MAXINT) | |
2360 | return 0; | |
2361 | /* Should check layout? etc */ | |
a322f70c | 2362 | return 1; |
78e44928 | 2363 | } |
a322f70c | 2364 | |
78e44928 NB |
2365 | /* This is the first device for the array. |
2366 | * If it is a container, we read it in and do automagic allocations, | |
2367 | * no other devices should be given. | |
2368 | * Otherwise it must be a member device of a container, and we | |
2369 | * do manual allocation. | |
2370 | * Later we should check for a BVD and make an SVD. | |
a322f70c | 2371 | */ |
a322f70c DW |
2372 | fd = open(dev, O_RDONLY|O_EXCL, 0); |
2373 | if (fd >= 0) { | |
2374 | sra = sysfs_read(fd, 0, GET_VERSION); | |
2375 | close(fd); | |
2376 | if (sra && sra->array.major_version == -1 && | |
78e44928 NB |
2377 | strcmp(sra->text_version, "ddf") == 0) { |
2378 | ||
2379 | /* load super */ | |
2380 | /* find space for 'n' devices. */ | |
2381 | /* remember the devices */ | |
2382 | /* Somehow return the fact that we have enough */ | |
a322f70c DW |
2383 | } |
2384 | ||
2c514b71 NB |
2385 | if (verbose) |
2386 | fprintf(stderr, | |
2387 | Name ": ddf: Cannot create this array " | |
2388 | "on device %s\n", | |
2389 | dev); | |
a322f70c DW |
2390 | return 0; |
2391 | } | |
2392 | if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) { | |
2c514b71 NB |
2393 | if (verbose) |
2394 | fprintf(stderr, Name ": ddf: Cannot open %s: %s\n", | |
2395 | dev, strerror(errno)); | |
a322f70c DW |
2396 | return 0; |
2397 | } | |
2398 | /* Well, it is in use by someone, maybe a 'ddf' container. */ | |
2399 | cfd = open_container(fd); | |
2400 | if (cfd < 0) { | |
2401 | close(fd); | |
2c514b71 NB |
2402 | if (verbose) |
2403 | fprintf(stderr, Name ": ddf: Cannot use %s: %s\n", | |
2404 | dev, strerror(EBUSY)); | |
a322f70c DW |
2405 | return 0; |
2406 | } | |
2407 | sra = sysfs_read(cfd, 0, GET_VERSION); | |
2408 | close(fd); | |
2409 | if (sra && sra->array.major_version == -1 && | |
2410 | strcmp(sra->text_version, "ddf") == 0) { | |
2411 | /* This is a member of a ddf container. Load the container | |
2412 | * and try to create a bvd | |
2413 | */ | |
2414 | struct ddf_super *ddf; | |
a322f70c | 2415 | if (load_super_ddf_all(st, cfd, (void **)&ddf, NULL, 1) == 0) { |
5f8097be | 2416 | st->sb = ddf; |
2f6079dc | 2417 | st->container_dev = fd2devnum(cfd); |
a322f70c | 2418 | close(cfd); |
78e44928 | 2419 | return validate_geometry_ddf_bvd(st, level, layout, |
a322f70c | 2420 | raiddisks, chunk, size, |
2c514b71 NB |
2421 | dev, freesize, |
2422 | verbose); | |
a322f70c DW |
2423 | } |
2424 | close(cfd); | |
c42ec1ed DW |
2425 | } else /* device may belong to a different container */ |
2426 | return 0; | |
2427 | ||
a322f70c DW |
2428 | return 1; |
2429 | } | |
2430 | ||
2c514b71 NB |
2431 | static int |
2432 | validate_geometry_ddf_container(struct supertype *st, | |
2433 | int level, int layout, int raiddisks, | |
2434 | int chunk, unsigned long long size, | |
2435 | char *dev, unsigned long long *freesize, | |
2436 | int verbose) | |
a322f70c DW |
2437 | { |
2438 | int fd; | |
2439 | unsigned long long ldsize; | |
2440 | ||
2441 | if (level != LEVEL_CONTAINER) | |
2442 | return 0; | |
2443 | if (!dev) | |
2444 | return 1; | |
2445 | ||
2446 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
2447 | if (fd < 0) { | |
2c514b71 NB |
2448 | if (verbose) |
2449 | fprintf(stderr, Name ": ddf: Cannot open %s: %s\n", | |
2450 | dev, strerror(errno)); | |
a322f70c DW |
2451 | return 0; |
2452 | } | |
2453 | if (!get_dev_size(fd, dev, &ldsize)) { | |
2454 | close(fd); | |
2455 | return 0; | |
2456 | } | |
2457 | close(fd); | |
2458 | ||
56aca704 | 2459 | *freesize = avail_size_ddf(st, ldsize >> 9); |
a322f70c DW |
2460 | |
2461 | return 1; | |
2462 | } | |
2463 | ||
78e44928 NB |
2464 | static int validate_geometry_ddf_bvd(struct supertype *st, |
2465 | int level, int layout, int raiddisks, | |
2466 | int chunk, unsigned long long size, | |
2c514b71 NB |
2467 | char *dev, unsigned long long *freesize, |
2468 | int verbose) | |
a322f70c DW |
2469 | { |
2470 | struct stat stb; | |
2471 | struct ddf_super *ddf = st->sb; | |
2472 | struct dl *dl; | |
5f8097be NB |
2473 | unsigned long long pos = 0; |
2474 | unsigned long long maxsize; | |
2475 | struct extent *e; | |
2476 | int i; | |
a322f70c DW |
2477 | /* ddf/bvd supports lots of things, but not containers */ |
2478 | if (level == LEVEL_CONTAINER) | |
2479 | return 0; | |
2480 | /* We must have the container info already read in. */ | |
2481 | if (!ddf) | |
2482 | return 0; | |
2483 | ||
5f8097be NB |
2484 | if (!dev) { |
2485 | /* General test: make sure there is space for | |
2486 | * 'raiddisks' device extents of size 'size'. | |
2487 | */ | |
2488 | unsigned long long minsize = size; | |
2489 | int dcnt = 0; | |
2490 | if (minsize == 0) | |
2491 | minsize = 8; | |
2492 | for (dl = ddf->dlist; dl ; dl = dl->next) | |
2493 | { | |
2494 | int found = 0; | |
7e1432fb | 2495 | pos = 0; |
5f8097be NB |
2496 | |
2497 | i = 0; | |
2498 | e = get_extents(ddf, dl); | |
2499 | if (!e) continue; | |
2500 | do { | |
2501 | unsigned long long esize; | |
2502 | esize = e[i].start - pos; | |
2503 | if (esize >= minsize) | |
2504 | found = 1; | |
2505 | pos = e[i].start + e[i].size; | |
2506 | i++; | |
2507 | } while (e[i-1].size); | |
2508 | if (found) | |
2509 | dcnt++; | |
2510 | free(e); | |
2511 | } | |
2512 | if (dcnt < raiddisks) { | |
2c514b71 NB |
2513 | if (verbose) |
2514 | fprintf(stderr, | |
2515 | Name ": ddf: Not enough devices with " | |
2516 | "space for this array (%d < %d)\n", | |
2517 | dcnt, raiddisks); | |
5f8097be NB |
2518 | return 0; |
2519 | } | |
2520 | return 1; | |
2521 | } | |
a322f70c DW |
2522 | /* This device must be a member of the set */ |
2523 | if (stat(dev, &stb) < 0) | |
2524 | return 0; | |
2525 | if ((S_IFMT & stb.st_mode) != S_IFBLK) | |
2526 | return 0; | |
2527 | for (dl = ddf->dlist ; dl ; dl = dl->next) { | |
2528 | if (dl->major == major(stb.st_rdev) && | |
2529 | dl->minor == minor(stb.st_rdev)) | |
2530 | break; | |
2531 | } | |
5f8097be | 2532 | if (!dl) { |
2c514b71 NB |
2533 | if (verbose) |
2534 | fprintf(stderr, Name ": ddf: %s is not in the " | |
2535 | "same DDF set\n", | |
2536 | dev); | |
5f8097be NB |
2537 | return 0; |
2538 | } | |
2539 | e = get_extents(ddf, dl); | |
2540 | maxsize = 0; | |
2541 | i = 0; | |
2542 | if (e) do { | |
2543 | unsigned long long esize; | |
2544 | esize = e[i].start - pos; | |
2545 | if (esize >= maxsize) | |
2546 | maxsize = esize; | |
2547 | pos = e[i].start + e[i].size; | |
2548 | i++; | |
2549 | } while (e[i-1].size); | |
2550 | *freesize = maxsize; | |
a322f70c DW |
2551 | // FIXME here I am |
2552 | ||
2553 | return 1; | |
2554 | } | |
59e36268 | 2555 | |
a322f70c DW |
2556 | static int load_super_ddf_all(struct supertype *st, int fd, |
2557 | void **sbp, char *devname, int keep_fd) | |
2558 | { | |
2559 | struct mdinfo *sra; | |
2560 | struct ddf_super *super; | |
2561 | struct mdinfo *sd, *best = NULL; | |
2562 | int bestseq = 0; | |
2563 | int seq; | |
2564 | char nm[20]; | |
2565 | int dfd; | |
2566 | ||
2567 | sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE); | |
2568 | if (!sra) | |
2569 | return 1; | |
2570 | if (sra->array.major_version != -1 || | |
2571 | sra->array.minor_version != -2 || | |
2572 | strcmp(sra->text_version, "ddf") != 0) | |
2573 | return 1; | |
2574 | ||
6416d527 | 2575 | if (posix_memalign((void**)&super, 512, sizeof(*super)) != 0) |
a322f70c | 2576 | return 1; |
a2349791 | 2577 | memset(super, 0, sizeof(*super)); |
a322f70c DW |
2578 | |
2579 | /* first, try each device, and choose the best ddf */ | |
2580 | for (sd = sra->devs ; sd ; sd = sd->next) { | |
2581 | int rv; | |
2582 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
7a7cc504 NB |
2583 | dfd = dev_open(nm, O_RDONLY); |
2584 | if (dfd < 0) | |
a322f70c DW |
2585 | return 2; |
2586 | rv = load_ddf_headers(dfd, super, NULL); | |
7a7cc504 | 2587 | close(dfd); |
a322f70c DW |
2588 | if (rv == 0) { |
2589 | seq = __be32_to_cpu(super->active->seq); | |
2590 | if (super->active->openflag) | |
2591 | seq--; | |
2592 | if (!best || seq > bestseq) { | |
2593 | bestseq = seq; | |
2594 | best = sd; | |
2595 | } | |
2596 | } | |
2597 | } | |
2598 | if (!best) | |
2599 | return 1; | |
2600 | /* OK, load this ddf */ | |
2601 | sprintf(nm, "%d:%d", best->disk.major, best->disk.minor); | |
2602 | dfd = dev_open(nm, O_RDONLY); | |
7a7cc504 | 2603 | if (dfd < 0) |
a322f70c DW |
2604 | return 1; |
2605 | load_ddf_headers(dfd, super, NULL); | |
2606 | load_ddf_global(dfd, super, NULL); | |
2607 | close(dfd); | |
2608 | /* Now we need the device-local bits */ | |
2609 | for (sd = sra->devs ; sd ; sd = sd->next) { | |
3d2c4fc7 DW |
2610 | int rv; |
2611 | ||
a322f70c | 2612 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); |
5f8097be | 2613 | dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY); |
7a7cc504 | 2614 | if (dfd < 0) |
a322f70c | 2615 | return 2; |
3d2c4fc7 DW |
2616 | rv = load_ddf_headers(dfd, super, NULL); |
2617 | if (rv == 0) | |
2618 | rv = load_ddf_local(dfd, super, NULL, keep_fd); | |
5f8097be | 2619 | if (!keep_fd) close(dfd); |
3d2c4fc7 DW |
2620 | if (rv) |
2621 | return 1; | |
a322f70c | 2622 | } |
f7e7067b NB |
2623 | if (st->subarray[0]) { |
2624 | struct vcl *v; | |
2625 | ||
2626 | for (v = super->conflist; v; v = v->next) | |
2627 | if (v->vcnum == atoi(st->subarray)) | |
d2ca6449 NB |
2628 | super->currentconf = v; |
2629 | if (!super->currentconf) | |
f7e7067b NB |
2630 | return 1; |
2631 | } | |
a322f70c DW |
2632 | *sbp = super; |
2633 | if (st->ss == NULL) { | |
78e44928 | 2634 | st->ss = &super_ddf; |
a322f70c DW |
2635 | st->minor_version = 0; |
2636 | st->max_devs = 512; | |
75aa18b5 | 2637 | st->container_dev = fd2devnum(fd); |
a322f70c | 2638 | } |
352452c3 | 2639 | st->loaded_container = 1; |
a322f70c DW |
2640 | return 0; |
2641 | } | |
0e600426 | 2642 | #endif /* MDASSEMBLE */ |
a322f70c | 2643 | |
598f0d58 NB |
2644 | static struct mdinfo *container_content_ddf(struct supertype *st) |
2645 | { | |
2646 | /* Given a container loaded by load_super_ddf_all, | |
2647 | * extract information about all the arrays into | |
2648 | * an mdinfo tree. | |
2649 | * | |
2650 | * For each vcl in conflist: create an mdinfo, fill it in, | |
2651 | * then look for matching devices (phys_refnum) in dlist | |
2652 | * and create appropriate device mdinfo. | |
2653 | */ | |
2654 | struct ddf_super *ddf = st->sb; | |
2655 | struct mdinfo *rest = NULL; | |
2656 | struct vcl *vc; | |
2657 | ||
2658 | for (vc = ddf->conflist ; vc ; vc=vc->next) | |
2659 | { | |
598f0d58 NB |
2660 | int i; |
2661 | struct mdinfo *this; | |
2662 | this = malloc(sizeof(*this)); | |
2663 | memset(this, 0, sizeof(*this)); | |
2664 | this->next = rest; | |
2665 | rest = this; | |
2666 | ||
598f0d58 NB |
2667 | this->array.level = map_num1(ddf_level_num, vc->conf.prl); |
2668 | this->array.raid_disks = | |
2669 | __be16_to_cpu(vc->conf.prim_elmnt_count); | |
60f18132 NB |
2670 | this->array.layout = rlq_to_layout(vc->conf.rlq, vc->conf.prl, |
2671 | this->array.raid_disks); | |
598f0d58 | 2672 | this->array.md_minor = -1; |
f35f2525 N |
2673 | this->array.major_version = -1; |
2674 | this->array.minor_version = -2; | |
598f0d58 NB |
2675 | this->array.ctime = DECADE + |
2676 | __be32_to_cpu(*(__u32*)(vc->conf.guid+16)); | |
2677 | this->array.utime = DECADE + | |
2678 | __be32_to_cpu(vc->conf.timestamp); | |
2679 | this->array.chunk_size = 512 << vc->conf.chunk_shift; | |
2680 | ||
59e36268 | 2681 | i = vc->vcnum; |
7a7cc504 NB |
2682 | if ((ddf->virt->entries[i].state & DDF_state_inconsistent) || |
2683 | (ddf->virt->entries[i].init_state & DDF_initstate_mask) != | |
ed9d66aa | 2684 | DDF_init_full) { |
598f0d58 | 2685 | this->array.state = 0; |
ed9d66aa NB |
2686 | this->resync_start = 0; |
2687 | } else { | |
598f0d58 | 2688 | this->array.state = 1; |
ed9d66aa NB |
2689 | this->resync_start = ~0ULL; |
2690 | } | |
598f0d58 | 2691 | memcpy(this->name, ddf->virt->entries[i].name, 32); |
0e600426 | 2692 | this->name[32]=0; |
598f0d58 NB |
2693 | |
2694 | memset(this->uuid, 0, sizeof(this->uuid)); | |
2695 | this->component_size = __be64_to_cpu(vc->conf.blocks); | |
2696 | this->array.size = this->component_size / 2; | |
5f2aace8 | 2697 | this->container_member = i; |
598f0d58 | 2698 | |
c5afc314 N |
2699 | ddf->currentconf = vc; |
2700 | uuid_from_super_ddf(st, this->uuid); | |
2701 | ddf->currentconf = NULL; | |
2702 | ||
60f18132 NB |
2703 | sprintf(this->text_version, "/%s/%d", |
2704 | devnum2devname(st->container_dev), | |
2705 | this->container_member); | |
2706 | ||
8c3b8c2c | 2707 | for (i=0 ; i < ddf->mppe ; i++) { |
598f0d58 NB |
2708 | struct mdinfo *dev; |
2709 | struct dl *d; | |
2710 | ||
2711 | if (vc->conf.phys_refnum[i] == 0xFFFFFFFF) | |
2712 | continue; | |
2713 | ||
2714 | this->array.working_disks++; | |
2715 | ||
2716 | for (d = ddf->dlist; d ; d=d->next) | |
2717 | if (d->disk.refnum == vc->conf.phys_refnum[i]) | |
2718 | break; | |
2719 | if (d == NULL) | |
2720 | break; | |
2721 | ||
2722 | dev = malloc(sizeof(*dev)); | |
2723 | memset(dev, 0, sizeof(*dev)); | |
2724 | dev->next = this->devs; | |
2725 | this->devs = dev; | |
2726 | ||
2727 | dev->disk.number = __be32_to_cpu(d->disk.refnum); | |
2728 | dev->disk.major = d->major; | |
2729 | dev->disk.minor = d->minor; | |
2730 | dev->disk.raid_disk = i; | |
2731 | dev->disk.state = (1<<MD_DISK_SYNC)|(1<<MD_DISK_ACTIVE); | |
2732 | ||
120f7677 NB |
2733 | dev->events = __be32_to_cpu(ddf->primary.seq); |
2734 | dev->data_offset = __be64_to_cpu(vc->lba_offset[i]); | |
598f0d58 NB |
2735 | dev->component_size = __be64_to_cpu(vc->conf.blocks); |
2736 | if (d->devname) | |
2737 | strcpy(dev->name, d->devname); | |
2738 | } | |
2739 | } | |
2740 | return rest; | |
2741 | } | |
2742 | ||
a322f70c DW |
2743 | static int store_zero_ddf(struct supertype *st, int fd) |
2744 | { | |
2745 | unsigned long long dsize; | |
6416d527 | 2746 | void *buf; |
3d2c4fc7 | 2747 | int rc; |
a322f70c | 2748 | |
a322f70c DW |
2749 | if (!get_dev_size(fd, NULL, &dsize)) |
2750 | return 1; | |
2751 | ||
3d2c4fc7 DW |
2752 | if (posix_memalign(&buf, 512, 512) != 0) |
2753 | return 1; | |
6416d527 NB |
2754 | memset(buf, 0, 512); |
2755 | ||
a322f70c | 2756 | lseek64(fd, dsize-512, 0); |
3d2c4fc7 | 2757 | rc = write(fd, buf, 512); |
6416d527 | 2758 | free(buf); |
3d2c4fc7 DW |
2759 | if (rc < 0) |
2760 | return 1; | |
a322f70c DW |
2761 | return 0; |
2762 | } | |
2763 | ||
a19c88b8 NB |
2764 | static int compare_super_ddf(struct supertype *st, struct supertype *tst) |
2765 | { | |
2766 | /* | |
2767 | * return: | |
2768 | * 0 same, or first was empty, and second was copied | |
2769 | * 1 second had wrong number | |
2770 | * 2 wrong uuid | |
2771 | * 3 wrong other info | |
2772 | */ | |
2773 | struct ddf_super *first = st->sb; | |
2774 | struct ddf_super *second = tst->sb; | |
2775 | ||
2776 | if (!first) { | |
2777 | st->sb = tst->sb; | |
2778 | tst->sb = NULL; | |
2779 | return 0; | |
2780 | } | |
2781 | ||
2782 | if (memcmp(first->anchor.guid, second->anchor.guid, DDF_GUID_LEN) != 0) | |
2783 | return 2; | |
2784 | ||
2785 | /* FIXME should I look at anything else? */ | |
2786 | return 0; | |
2787 | } | |
2788 | ||
0e600426 | 2789 | #ifndef MDASSEMBLE |
4e5528c6 NB |
2790 | /* |
2791 | * A new array 'a' has been started which claims to be instance 'inst' | |
2792 | * within container 'c'. | |
2793 | * We need to confirm that the array matches the metadata in 'c' so | |
2794 | * that we don't corrupt any metadata. | |
2795 | */ | |
cba0191b | 2796 | static int ddf_open_new(struct supertype *c, struct active_array *a, char *inst) |
549e9569 | 2797 | { |
2c514b71 | 2798 | dprintf("ddf: open_new %s\n", inst); |
cba0191b | 2799 | a->info.container_member = atoi(inst); |
549e9569 NB |
2800 | return 0; |
2801 | } | |
2802 | ||
4e5528c6 NB |
2803 | /* |
2804 | * The array 'a' is to be marked clean in the metadata. | |
ed9d66aa | 2805 | * If '->resync_start' is not ~(unsigned long long)0, then the array is only |
4e5528c6 NB |
2806 | * clean up to the point (in sectors). If that cannot be recorded in the |
2807 | * metadata, then leave it as dirty. | |
2808 | * | |
2809 | * For DDF, we need to clear the DDF_state_inconsistent bit in the | |
2810 | * !global! virtual_disk.virtual_entry structure. | |
2811 | */ | |
01f157d7 | 2812 | static int ddf_set_array_state(struct active_array *a, int consistent) |
549e9569 | 2813 | { |
4e5528c6 NB |
2814 | struct ddf_super *ddf = a->container->sb; |
2815 | int inst = a->info.container_member; | |
18a2f463 | 2816 | int old = ddf->virt->entries[inst].state; |
01f157d7 N |
2817 | if (consistent == 2) { |
2818 | /* Should check if a recovery should be started FIXME */ | |
2819 | consistent = 1; | |
593add1b | 2820 | if (!is_resync_complete(a)) |
01f157d7 N |
2821 | consistent = 0; |
2822 | } | |
ed9d66aa NB |
2823 | if (consistent) |
2824 | ddf->virt->entries[inst].state &= ~DDF_state_inconsistent; | |
2825 | else | |
4e5528c6 | 2826 | ddf->virt->entries[inst].state |= DDF_state_inconsistent; |
18a2f463 NB |
2827 | if (old != ddf->virt->entries[inst].state) |
2828 | ddf->updates_pending = 1; | |
2829 | ||
2830 | old = ddf->virt->entries[inst].init_state; | |
ed9d66aa | 2831 | ddf->virt->entries[inst].init_state &= ~DDF_initstate_mask; |
593add1b | 2832 | if (is_resync_complete(a)) |
ed9d66aa NB |
2833 | ddf->virt->entries[inst].init_state |= DDF_init_full; |
2834 | else if (a->resync_start == 0) | |
2835 | ddf->virt->entries[inst].init_state |= DDF_init_not; | |
4e5528c6 | 2836 | else |
ed9d66aa | 2837 | ddf->virt->entries[inst].init_state |= DDF_init_quick; |
18a2f463 NB |
2838 | if (old != ddf->virt->entries[inst].init_state) |
2839 | ddf->updates_pending = 1; | |
ed9d66aa | 2840 | |
2c514b71 NB |
2841 | dprintf("ddf mark %d %s %llu\n", inst, consistent?"clean":"dirty", |
2842 | a->resync_start); | |
01f157d7 | 2843 | return consistent; |
fd7cde1b DW |
2844 | } |
2845 | ||
7a7cc504 NB |
2846 | /* |
2847 | * The state of each disk is stored in the global phys_disk structure | |
2848 | * in phys_disk.entries[n].state. | |
2849 | * This makes various combinations awkward. | |
2850 | * - When a device fails in any array, it must be failed in all arrays | |
2851 | * that include a part of this device. | |
2852 | * - When a component is rebuilding, we cannot include it officially in the | |
2853 | * array unless this is the only array that uses the device. | |
2854 | * | |
2855 | * So: when transitioning: | |
2856 | * Online -> failed, just set failed flag. monitor will propagate | |
2857 | * spare -> online, the device might need to be added to the array. | |
2858 | * spare -> failed, just set failed. Don't worry if in array or not. | |
2859 | */ | |
8d45d196 | 2860 | static void ddf_set_disk(struct active_array *a, int n, int state) |
549e9569 | 2861 | { |
7a7cc504 NB |
2862 | struct ddf_super *ddf = a->container->sb; |
2863 | int inst = a->info.container_member; | |
2864 | struct vd_config *vc = find_vdcr(ddf, inst); | |
2865 | int pd = find_phys(ddf, vc->phys_refnum[n]); | |
2866 | int i, st, working; | |
2867 | ||
2868 | if (vc == NULL) { | |
2c514b71 | 2869 | dprintf("ddf: cannot find instance %d!!\n", inst); |
7a7cc504 NB |
2870 | return; |
2871 | } | |
2872 | if (pd < 0) { | |
2873 | /* disk doesn't currently exist. If it is now in_sync, | |
2874 | * insert it. */ | |
2875 | if ((state & DS_INSYNC) && ! (state & DS_FAULTY)) { | |
2876 | /* Find dev 'n' in a->info->devs, determine the | |
2877 | * ddf refnum, and set vc->phys_refnum and update | |
2878 | * phys->entries[] | |
2879 | */ | |
2880 | /* FIXME */ | |
2881 | } | |
2882 | } else { | |
18a2f463 | 2883 | int old = ddf->phys->entries[pd].state; |
7a7cc504 NB |
2884 | if (state & DS_FAULTY) |
2885 | ddf->phys->entries[pd].state |= __cpu_to_be16(DDF_Failed); | |
2886 | if (state & DS_INSYNC) { | |
2887 | ddf->phys->entries[pd].state |= __cpu_to_be16(DDF_Online); | |
2888 | ddf->phys->entries[pd].state &= __cpu_to_be16(~DDF_Rebuilding); | |
2889 | } | |
18a2f463 NB |
2890 | if (old != ddf->phys->entries[pd].state) |
2891 | ddf->updates_pending = 1; | |
7a7cc504 NB |
2892 | } |
2893 | ||
2c514b71 | 2894 | dprintf("ddf: set_disk %d to %x\n", n, state); |
7e1432fb | 2895 | |
7a7cc504 NB |
2896 | /* Now we need to check the state of the array and update |
2897 | * virtual_disk.entries[n].state. | |
2898 | * It needs to be one of "optimal", "degraded", "failed". | |
2899 | * I don't understand 'deleted' or 'missing'. | |
2900 | */ | |
2901 | working = 0; | |
2902 | for (i=0; i < a->info.array.raid_disks; i++) { | |
2903 | pd = find_phys(ddf, vc->phys_refnum[i]); | |
2904 | if (pd < 0) | |
2905 | continue; | |
57632f4a NB |
2906 | st = __be16_to_cpu(ddf->phys->entries[pd].state); |
2907 | if ((st & (DDF_Online|DDF_Failed|DDF_Rebuilding)) | |
7a7cc504 NB |
2908 | == DDF_Online) |
2909 | working++; | |
2910 | } | |
2911 | state = DDF_state_degraded; | |
2912 | if (working == a->info.array.raid_disks) | |
2913 | state = DDF_state_optimal; | |
2914 | else switch(vc->prl) { | |
2915 | case DDF_RAID0: | |
2916 | case DDF_CONCAT: | |
2917 | case DDF_JBOD: | |
2918 | state = DDF_state_failed; | |
2919 | break; | |
2920 | case DDF_RAID1: | |
2921 | if (working == 0) | |
2922 | state = DDF_state_failed; | |
2923 | break; | |
2924 | case DDF_RAID4: | |
2925 | case DDF_RAID5: | |
2926 | if (working < a->info.array.raid_disks-1) | |
2927 | state = DDF_state_failed; | |
2928 | break; | |
2929 | case DDF_RAID6: | |
2930 | if (working < a->info.array.raid_disks-2) | |
2931 | state = DDF_state_failed; | |
2932 | else if (working == a->info.array.raid_disks-1) | |
2933 | state = DDF_state_part_optimal; | |
2934 | break; | |
2935 | } | |
2936 | ||
18a2f463 NB |
2937 | if (ddf->virt->entries[inst].state != |
2938 | ((ddf->virt->entries[inst].state & ~DDF_state_mask) | |
2939 | | state)) { | |
2940 | ||
2941 | ddf->virt->entries[inst].state = | |
2942 | (ddf->virt->entries[inst].state & ~DDF_state_mask) | |
2943 | | state; | |
2944 | ddf->updates_pending = 1; | |
2945 | } | |
7a7cc504 | 2946 | |
549e9569 NB |
2947 | } |
2948 | ||
2e735d19 | 2949 | static void ddf_sync_metadata(struct supertype *st) |
549e9569 | 2950 | { |
7a7cc504 NB |
2951 | |
2952 | /* | |
2953 | * Write all data to all devices. | |
2954 | * Later, we might be able to track whether only local changes | |
2955 | * have been made, or whether any global data has been changed, | |
2956 | * but ddf is sufficiently weird that it probably always | |
2957 | * changes global data .... | |
2958 | */ | |
18a2f463 NB |
2959 | struct ddf_super *ddf = st->sb; |
2960 | if (!ddf->updates_pending) | |
2961 | return; | |
2962 | ddf->updates_pending = 0; | |
2e735d19 | 2963 | __write_init_super_ddf(st, 0); |
2c514b71 | 2964 | dprintf("ddf: sync_metadata\n"); |
549e9569 NB |
2965 | } |
2966 | ||
88c164f4 NB |
2967 | static void ddf_process_update(struct supertype *st, |
2968 | struct metadata_update *update) | |
2969 | { | |
2970 | /* Apply this update to the metadata. | |
2971 | * The first 4 bytes are a DDF_*_MAGIC which guides | |
2972 | * our actions. | |
2973 | * Possible update are: | |
2974 | * DDF_PHYS_RECORDS_MAGIC | |
2975 | * Add a new physical device. Changes to this record | |
2976 | * only happen implicitly. | |
2977 | * used_pdes is the device number. | |
2978 | * DDF_VIRT_RECORDS_MAGIC | |
2979 | * Add a new VD. Possibly also change the 'access' bits. | |
2980 | * populated_vdes is the entry number. | |
2981 | * DDF_VD_CONF_MAGIC | |
2982 | * New or updated VD. the VIRT_RECORD must already | |
2983 | * exist. For an update, phys_refnum and lba_offset | |
2984 | * (at least) are updated, and the VD_CONF must | |
2985 | * be written to precisely those devices listed with | |
2986 | * a phys_refnum. | |
2987 | * DDF_SPARE_ASSIGN_MAGIC | |
2988 | * replacement Spare Assignment Record... but for which device? | |
2989 | * | |
2990 | * So, e.g.: | |
2991 | * - to create a new array, we send a VIRT_RECORD and | |
2992 | * a VD_CONF. Then assemble and start the array. | |
2993 | * - to activate a spare we send a VD_CONF to add the phys_refnum | |
2994 | * and offset. This will also mark the spare as active with | |
2995 | * a spare-assignment record. | |
2996 | */ | |
2997 | struct ddf_super *ddf = st->sb; | |
2998 | __u32 *magic = (__u32*)update->buf; | |
2999 | struct phys_disk *pd; | |
3000 | struct virtual_disk *vd; | |
3001 | struct vd_config *vc; | |
3002 | struct vcl *vcl; | |
3003 | struct dl *dl; | |
3004 | int mppe; | |
3005 | int ent; | |
3006 | ||
2c514b71 | 3007 | dprintf("Process update %x\n", *magic); |
7e1432fb | 3008 | |
88c164f4 NB |
3009 | switch (*magic) { |
3010 | case DDF_PHYS_RECORDS_MAGIC: | |
3011 | ||
3012 | if (update->len != (sizeof(struct phys_disk) + | |
3013 | sizeof(struct phys_disk_entry))) | |
3014 | return; | |
3015 | pd = (struct phys_disk*)update->buf; | |
3016 | ||
3017 | ent = __be16_to_cpu(pd->used_pdes); | |
3018 | if (ent >= __be16_to_cpu(ddf->phys->max_pdes)) | |
3019 | return; | |
3020 | if (!all_ff(ddf->phys->entries[ent].guid)) | |
3021 | return; | |
3022 | ddf->phys->entries[ent] = pd->entries[0]; | |
3023 | ddf->phys->used_pdes = __cpu_to_be16(1 + | |
3024 | __be16_to_cpu(ddf->phys->used_pdes)); | |
18a2f463 | 3025 | ddf->updates_pending = 1; |
2cc2983d N |
3026 | if (ddf->add_list) { |
3027 | struct active_array *a; | |
3028 | struct dl *al = ddf->add_list; | |
3029 | ddf->add_list = al->next; | |
3030 | ||
3031 | al->next = ddf->dlist; | |
3032 | ddf->dlist = al; | |
3033 | ||
3034 | /* As a device has been added, we should check | |
3035 | * for any degraded devices that might make | |
3036 | * use of this spare */ | |
3037 | for (a = st->arrays ; a; a=a->next) | |
3038 | a->check_degraded = 1; | |
3039 | } | |
88c164f4 NB |
3040 | break; |
3041 | ||
3042 | case DDF_VIRT_RECORDS_MAGIC: | |
3043 | ||
3044 | if (update->len != (sizeof(struct virtual_disk) + | |
3045 | sizeof(struct virtual_entry))) | |
3046 | return; | |
3047 | vd = (struct virtual_disk*)update->buf; | |
3048 | ||
3049 | ent = __be16_to_cpu(vd->populated_vdes); | |
3050 | if (ent >= __be16_to_cpu(ddf->virt->max_vdes)) | |
3051 | return; | |
3052 | if (!all_ff(ddf->virt->entries[ent].guid)) | |
3053 | return; | |
3054 | ddf->virt->entries[ent] = vd->entries[0]; | |
3055 | ddf->virt->populated_vdes = __cpu_to_be16(1 + | |
3056 | __be16_to_cpu(ddf->virt->populated_vdes)); | |
18a2f463 | 3057 | ddf->updates_pending = 1; |
88c164f4 NB |
3058 | break; |
3059 | ||
3060 | case DDF_VD_CONF_MAGIC: | |
2c514b71 | 3061 | dprintf("len %d %d\n", update->len, ddf->conf_rec_len); |
88c164f4 NB |
3062 | |
3063 | mppe = __be16_to_cpu(ddf->anchor.max_primary_element_entries); | |
edd8d13c | 3064 | if (update->len != ddf->conf_rec_len * 512) |
88c164f4 NB |
3065 | return; |
3066 | vc = (struct vd_config*)update->buf; | |
3067 | for (vcl = ddf->conflist; vcl ; vcl = vcl->next) | |
3068 | if (memcmp(vcl->conf.guid, vc->guid, DDF_GUID_LEN) == 0) | |
3069 | break; | |
2c514b71 | 3070 | dprintf("vcl = %p\n", vcl); |
88c164f4 NB |
3071 | if (vcl) { |
3072 | /* An update, just copy the phys_refnum and lba_offset | |
3073 | * fields | |
3074 | */ | |
3075 | memcpy(vcl->conf.phys_refnum, vc->phys_refnum, | |
3076 | mppe * (sizeof(__u32) + sizeof(__u64))); | |
3077 | } else { | |
3078 | /* A new VD_CONF */ | |
3079 | vcl = update->space; | |
3080 | update->space = NULL; | |
3081 | vcl->next = ddf->conflist; | |
edd8d13c | 3082 | memcpy(&vcl->conf, vc, update->len); |
88c164f4 NB |
3083 | vcl->lba_offset = (__u64*) |
3084 | &vcl->conf.phys_refnum[mppe]; | |
3085 | ddf->conflist = vcl; | |
3086 | } | |
3087 | /* Now make sure vlist is correct for each dl. */ | |
3088 | for (dl = ddf->dlist; dl; dl = dl->next) { | |
3089 | int dn; | |
3090 | int vn = 0; | |
3091 | for (vcl = ddf->conflist; vcl ; vcl = vcl->next) | |
3092 | for (dn=0; dn < ddf->mppe ; dn++) | |
3093 | if (vcl->conf.phys_refnum[dn] == | |
3094 | dl->disk.refnum) { | |
2c514b71 NB |
3095 | dprintf("dev %d has %p at %d\n", |
3096 | dl->pdnum, vcl, vn); | |
88c164f4 NB |
3097 | dl->vlist[vn++] = vcl; |
3098 | break; | |
3099 | } | |
3100 | while (vn < ddf->max_part) | |
3101 | dl->vlist[vn++] = NULL; | |
7e1432fb NB |
3102 | if (dl->vlist[0]) { |
3103 | ddf->phys->entries[dl->pdnum].type &= | |
3104 | ~__cpu_to_be16(DDF_Global_Spare); | |
3105 | ddf->phys->entries[dl->pdnum].type |= | |
3106 | __cpu_to_be16(DDF_Active_in_VD); | |
3107 | } | |
3108 | if (dl->spare) { | |
3109 | ddf->phys->entries[dl->pdnum].type &= | |
3110 | ~__cpu_to_be16(DDF_Global_Spare); | |
3111 | ddf->phys->entries[dl->pdnum].type |= | |
3112 | __cpu_to_be16(DDF_Spare); | |
3113 | } | |
3114 | if (!dl->vlist[0] && !dl->spare) { | |
3115 | ddf->phys->entries[dl->pdnum].type |= | |
3116 | __cpu_to_be16(DDF_Global_Spare); | |
3117 | ddf->phys->entries[dl->pdnum].type &= | |
3118 | ~__cpu_to_be16(DDF_Spare | | |
3119 | DDF_Active_in_VD); | |
3120 | } | |
88c164f4 | 3121 | } |
18a2f463 | 3122 | ddf->updates_pending = 1; |
88c164f4 NB |
3123 | break; |
3124 | case DDF_SPARE_ASSIGN_MAGIC: | |
3125 | default: break; | |
3126 | } | |
3127 | } | |
3128 | ||
edd8d13c NB |
3129 | static void ddf_prepare_update(struct supertype *st, |
3130 | struct metadata_update *update) | |
3131 | { | |
3132 | /* This update arrived at managemon. | |
3133 | * We are about to pass it to monitor. | |
3134 | * If a malloc is needed, do it here. | |
3135 | */ | |
3136 | struct ddf_super *ddf = st->sb; | |
3137 | __u32 *magic = (__u32*)update->buf; | |
3138 | if (*magic == DDF_VD_CONF_MAGIC) | |
6416d527 NB |
3139 | posix_memalign(&update->space, 512, |
3140 | offsetof(struct vcl, conf) | |
3141 | + ddf->conf_rec_len * 512); | |
edd8d13c NB |
3142 | } |
3143 | ||
7e1432fb NB |
3144 | /* |
3145 | * Check if the array 'a' is degraded but not failed. | |
3146 | * If it is, find as many spares as are available and needed and | |
3147 | * arrange for their inclusion. | |
3148 | * We only choose devices which are not already in the array, | |
3149 | * and prefer those with a spare-assignment to this array. | |
3150 | * otherwise we choose global spares - assuming always that | |
3151 | * there is enough room. | |
3152 | * For each spare that we assign, we return an 'mdinfo' which | |
3153 | * describes the position for the device in the array. | |
3154 | * We also add to 'updates' a DDF_VD_CONF_MAGIC update with | |
3155 | * the new phys_refnum and lba_offset values. | |
3156 | * | |
3157 | * Only worry about BVDs at the moment. | |
3158 | */ | |
3159 | static struct mdinfo *ddf_activate_spare(struct active_array *a, | |
3160 | struct metadata_update **updates) | |
3161 | { | |
3162 | int working = 0; | |
3163 | struct mdinfo *d; | |
3164 | struct ddf_super *ddf = a->container->sb; | |
3165 | int global_ok = 0; | |
3166 | struct mdinfo *rv = NULL; | |
3167 | struct mdinfo *di; | |
3168 | struct metadata_update *mu; | |
3169 | struct dl *dl; | |
3170 | int i; | |
3171 | struct vd_config *vc; | |
3172 | __u64 *lba; | |
3173 | ||
7e1432fb NB |
3174 | for (d = a->info.devs ; d ; d = d->next) { |
3175 | if ((d->curr_state & DS_FAULTY) && | |
3176 | d->state_fd >= 0) | |
3177 | /* wait for Removal to happen */ | |
3178 | return NULL; | |
3179 | if (d->state_fd >= 0) | |
3180 | working ++; | |
3181 | } | |
3182 | ||
2c514b71 NB |
3183 | dprintf("ddf_activate: working=%d (%d) level=%d\n", working, a->info.array.raid_disks, |
3184 | a->info.array.level); | |
7e1432fb NB |
3185 | if (working == a->info.array.raid_disks) |
3186 | return NULL; /* array not degraded */ | |
3187 | switch (a->info.array.level) { | |
3188 | case 1: | |
3189 | if (working == 0) | |
3190 | return NULL; /* failed */ | |
3191 | break; | |
3192 | case 4: | |
3193 | case 5: | |
3194 | if (working < a->info.array.raid_disks - 1) | |
3195 | return NULL; /* failed */ | |
3196 | break; | |
3197 | case 6: | |
3198 | if (working < a->info.array.raid_disks - 2) | |
3199 | return NULL; /* failed */ | |
3200 | break; | |
3201 | default: /* concat or stripe */ | |
3202 | return NULL; /* failed */ | |
3203 | } | |
3204 | ||
3205 | /* For each slot, if it is not working, find a spare */ | |
3206 | dl = ddf->dlist; | |
3207 | for (i = 0; i < a->info.array.raid_disks; i++) { | |
3208 | for (d = a->info.devs ; d ; d = d->next) | |
3209 | if (d->disk.raid_disk == i) | |
3210 | break; | |
2c514b71 | 3211 | dprintf("found %d: %p %x\n", i, d, d?d->curr_state:0); |
7e1432fb NB |
3212 | if (d && (d->state_fd >= 0)) |
3213 | continue; | |
3214 | ||
3215 | /* OK, this device needs recovery. Find a spare */ | |
3216 | again: | |
3217 | for ( ; dl ; dl = dl->next) { | |
3218 | unsigned long long esize; | |
3219 | unsigned long long pos; | |
3220 | struct mdinfo *d2; | |
3221 | int is_global = 0; | |
3222 | int is_dedicated = 0; | |
3223 | struct extent *ex; | |
3224 | int j; | |
3225 | /* If in this array, skip */ | |
3226 | for (d2 = a->info.devs ; d2 ; d2 = d2->next) | |
3227 | if (d2->disk.major == dl->major && | |
3228 | d2->disk.minor == dl->minor) { | |
2c514b71 | 3229 | dprintf("%x:%x already in array\n", dl->major, dl->minor); |
7e1432fb NB |
3230 | break; |
3231 | } | |
3232 | if (d2) | |
3233 | continue; | |
3234 | if (ddf->phys->entries[dl->pdnum].type & | |
3235 | __cpu_to_be16(DDF_Spare)) { | |
3236 | /* Check spare assign record */ | |
3237 | if (dl->spare) { | |
3238 | if (dl->spare->type & DDF_spare_dedicated) { | |
3239 | /* check spare_ents for guid */ | |
3240 | for (j = 0 ; | |
3241 | j < __be16_to_cpu(dl->spare->populated); | |
3242 | j++) { | |
3243 | if (memcmp(dl->spare->spare_ents[j].guid, | |
3244 | ddf->virt->entries[a->info.container_member].guid, | |
3245 | DDF_GUID_LEN) == 0) | |
3246 | is_dedicated = 1; | |
3247 | } | |
3248 | } else | |
3249 | is_global = 1; | |
3250 | } | |
3251 | } else if (ddf->phys->entries[dl->pdnum].type & | |
3252 | __cpu_to_be16(DDF_Global_Spare)) { | |
3253 | is_global = 1; | |
3254 | } | |
3255 | if ( ! (is_dedicated || | |
3256 | (is_global && global_ok))) { | |
2c514b71 | 3257 | dprintf("%x:%x not suitable: %d %d\n", dl->major, dl->minor, |
7e1432fb NB |
3258 | is_dedicated, is_global); |
3259 | continue; | |
3260 | } | |
3261 | ||
3262 | /* We are allowed to use this device - is there space? | |
3263 | * We need a->info.component_size sectors */ | |
3264 | ex = get_extents(ddf, dl); | |
3265 | if (!ex) { | |
2c514b71 | 3266 | dprintf("cannot get extents\n"); |
7e1432fb NB |
3267 | continue; |
3268 | } | |
3269 | j = 0; pos = 0; | |
3270 | esize = 0; | |
3271 | ||
3272 | do { | |
3273 | esize = ex[j].start - pos; | |
3274 | if (esize >= a->info.component_size) | |
3275 | break; | |
3276 | pos = ex[i].start + ex[i].size; | |
3277 | i++; | |
3278 | } while (ex[i-1].size); | |
3279 | ||
3280 | free(ex); | |
3281 | if (esize < a->info.component_size) { | |
2c514b71 NB |
3282 | dprintf("%x:%x has no room: %llu %llu\n", dl->major, dl->minor, |
3283 | esize, a->info.component_size); | |
7e1432fb NB |
3284 | /* No room */ |
3285 | continue; | |
3286 | } | |
3287 | ||
3288 | /* Cool, we have a device with some space at pos */ | |
3289 | di = malloc(sizeof(*di)); | |
79244939 DW |
3290 | if (!di) |
3291 | continue; | |
7e1432fb NB |
3292 | memset(di, 0, sizeof(*di)); |
3293 | di->disk.number = i; | |
3294 | di->disk.raid_disk = i; | |
3295 | di->disk.major = dl->major; | |
3296 | di->disk.minor = dl->minor; | |
3297 | di->disk.state = 0; | |
3298 | di->data_offset = pos; | |
3299 | di->component_size = a->info.component_size; | |
3300 | di->container_member = dl->pdnum; | |
3301 | di->next = rv; | |
3302 | rv = di; | |
2c514b71 NB |
3303 | dprintf("%x:%x to be %d at %llu\n", dl->major, dl->minor, |
3304 | i, pos); | |
7e1432fb NB |
3305 | |
3306 | break; | |
3307 | } | |
3308 | if (!dl && ! global_ok) { | |
3309 | /* not enough dedicated spares, try global */ | |
3310 | global_ok = 1; | |
3311 | dl = ddf->dlist; | |
3312 | goto again; | |
3313 | } | |
3314 | } | |
3315 | ||
3316 | if (!rv) | |
3317 | /* No spares found */ | |
3318 | return rv; | |
3319 | /* Now 'rv' has a list of devices to return. | |
3320 | * Create a metadata_update record to update the | |
3321 | * phys_refnum and lba_offset values | |
3322 | */ | |
904c1ef7 | 3323 | mu = malloc(sizeof(*mu)); |
79244939 DW |
3324 | if (mu && posix_memalign(&mu->space, 512, sizeof(struct vcl)) != 0) { |
3325 | free(mu); | |
3326 | mu = NULL; | |
3327 | } | |
3328 | if (!mu) { | |
3329 | while (rv) { | |
3330 | struct mdinfo *n = rv->next; | |
3331 | ||
3332 | free(rv); | |
3333 | rv = n; | |
3334 | } | |
3335 | return NULL; | |
3336 | } | |
3337 | ||
904c1ef7 | 3338 | mu->buf = malloc(ddf->conf_rec_len * 512); |
7e1432fb NB |
3339 | mu->len = ddf->conf_rec_len; |
3340 | mu->next = *updates; | |
3341 | vc = find_vdcr(ddf, a->info.container_member); | |
3342 | memcpy(mu->buf, vc, ddf->conf_rec_len * 512); | |
3343 | ||
3344 | vc = (struct vd_config*)mu->buf; | |
3345 | lba = (__u64*)&vc->phys_refnum[ddf->mppe]; | |
3346 | for (di = rv ; di ; di = di->next) { | |
3347 | vc->phys_refnum[di->disk.raid_disk] = | |
3348 | ddf->phys->entries[dl->pdnum].refnum; | |
3349 | lba[di->disk.raid_disk] = di->data_offset; | |
3350 | } | |
3351 | *updates = mu; | |
3352 | return rv; | |
3353 | } | |
0e600426 | 3354 | #endif /* MDASSEMBLE */ |
7e1432fb | 3355 | |
a322f70c DW |
3356 | struct superswitch super_ddf = { |
3357 | #ifndef MDASSEMBLE | |
3358 | .examine_super = examine_super_ddf, | |
3359 | .brief_examine_super = brief_examine_super_ddf, | |
3360 | .detail_super = detail_super_ddf, | |
3361 | .brief_detail_super = brief_detail_super_ddf, | |
3362 | .validate_geometry = validate_geometry_ddf, | |
78e44928 | 3363 | .write_init_super = write_init_super_ddf, |
0e600426 | 3364 | .add_to_super = add_to_super_ddf, |
a322f70c DW |
3365 | #endif |
3366 | .match_home = match_home_ddf, | |
3367 | .uuid_from_super= uuid_from_super_ddf, | |
3368 | .getinfo_super = getinfo_super_ddf, | |
3369 | .update_super = update_super_ddf, | |
3370 | ||
3371 | .avail_size = avail_size_ddf, | |
3372 | ||
a19c88b8 NB |
3373 | .compare_super = compare_super_ddf, |
3374 | ||
a322f70c | 3375 | .load_super = load_super_ddf, |
ba7eb04f | 3376 | .init_super = init_super_ddf, |
a322f70c DW |
3377 | .store_super = store_zero_ddf, |
3378 | .free_super = free_super_ddf, | |
3379 | .match_metadata_desc = match_metadata_desc_ddf, | |
78e44928 | 3380 | .container_content = container_content_ddf, |
a322f70c | 3381 | |
a322f70c | 3382 | .external = 1, |
549e9569 | 3383 | |
0e600426 | 3384 | #ifndef MDASSEMBLE |
549e9569 NB |
3385 | /* for mdmon */ |
3386 | .open_new = ddf_open_new, | |
ed9d66aa | 3387 | .set_array_state= ddf_set_array_state, |
549e9569 NB |
3388 | .set_disk = ddf_set_disk, |
3389 | .sync_metadata = ddf_sync_metadata, | |
88c164f4 | 3390 | .process_update = ddf_process_update, |
edd8d13c | 3391 | .prepare_update = ddf_prepare_update, |
7e1432fb | 3392 | .activate_spare = ddf_activate_spare, |
0e600426 | 3393 | #endif |
a322f70c | 3394 | }; |