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a322f70c DW |
1 | /* |
2 | * mdadm - manage Linux "md" devices aka RAID arrays. | |
3 | * | |
e736b623 | 4 | * Copyright (C) 2006-2009 Neil Brown <neilb@suse.de> |
a322f70c DW |
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; | |
f21e18ca | 399 | unsigned 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 */ | |
f21e18ca | 409 | unsigned int vcnum; /* index into ->virt */ |
8ec5d685 | 410 | struct vd_config **other_bvds; |
6416d527 NB |
411 | __u64 *block_sizes; /* NULL if all the same */ |
412 | }; | |
413 | }; | |
a322f70c | 414 | struct vd_config conf; |
d2ca6449 | 415 | } *conflist, *currentconf; |
a322f70c | 416 | struct dl { |
6416d527 NB |
417 | union { |
418 | char space[512]; | |
419 | struct { | |
420 | struct dl *next; | |
421 | int major, minor; | |
422 | char *devname; | |
423 | int fd; | |
424 | unsigned long long size; /* sectors */ | |
097bcf00 | 425 | unsigned long long primary_lba; /* sectors */ |
426 | unsigned long long secondary_lba; /* sectors */ | |
427 | unsigned long long workspace_lba; /* sectors */ | |
6416d527 NB |
428 | int pdnum; /* index in ->phys */ |
429 | struct spare_assign *spare; | |
8592f29d N |
430 | void *mdupdate; /* hold metadata update */ |
431 | ||
432 | /* These fields used by auto-layout */ | |
433 | int raiddisk; /* slot to fill in autolayout */ | |
434 | __u64 esize; | |
6416d527 NB |
435 | }; |
436 | }; | |
a322f70c | 437 | struct disk_data disk; |
b2280677 | 438 | struct vcl *vlist[0]; /* max_part in size */ |
2cc2983d | 439 | } *dlist, *add_list; |
a322f70c DW |
440 | }; |
441 | ||
442 | #ifndef offsetof | |
443 | #define offsetof(t,f) ((size_t)&(((t*)0)->f)) | |
444 | #endif | |
445 | ||
f21e18ca | 446 | static unsigned int calc_crc(void *buf, int len) |
a322f70c DW |
447 | { |
448 | /* crcs are always at the same place as in the ddf_header */ | |
449 | struct ddf_header *ddf = buf; | |
450 | __u32 oldcrc = ddf->crc; | |
451 | __u32 newcrc; | |
452 | ddf->crc = 0xffffffff; | |
453 | ||
454 | newcrc = crc32(0, buf, len); | |
455 | ddf->crc = oldcrc; | |
4abe6b70 N |
456 | /* The crc is store (like everything) bigendian, so convert |
457 | * here for simplicity | |
458 | */ | |
459 | return __cpu_to_be32(newcrc); | |
a322f70c DW |
460 | } |
461 | ||
462 | static int load_ddf_header(int fd, unsigned long long lba, | |
463 | unsigned long long size, | |
464 | int type, | |
465 | struct ddf_header *hdr, struct ddf_header *anchor) | |
466 | { | |
467 | /* read a ddf header (primary or secondary) from fd/lba | |
468 | * and check that it is consistent with anchor | |
469 | * Need to check: | |
470 | * magic, crc, guid, rev, and LBA's header_type, and | |
471 | * everything after header_type must be the same | |
472 | */ | |
473 | if (lba >= size-1) | |
474 | return 0; | |
475 | ||
476 | if (lseek64(fd, lba<<9, 0) < 0) | |
477 | return 0; | |
478 | ||
479 | if (read(fd, hdr, 512) != 512) | |
480 | return 0; | |
481 | ||
482 | if (hdr->magic != DDF_HEADER_MAGIC) | |
483 | return 0; | |
484 | if (calc_crc(hdr, 512) != hdr->crc) | |
485 | return 0; | |
486 | if (memcmp(anchor->guid, hdr->guid, DDF_GUID_LEN) != 0 || | |
487 | memcmp(anchor->revision, hdr->revision, 8) != 0 || | |
488 | anchor->primary_lba != hdr->primary_lba || | |
489 | anchor->secondary_lba != hdr->secondary_lba || | |
490 | hdr->type != type || | |
491 | memcmp(anchor->pad2, hdr->pad2, 512 - | |
492 | offsetof(struct ddf_header, pad2)) != 0) | |
493 | return 0; | |
494 | ||
495 | /* Looks good enough to me... */ | |
496 | return 1; | |
497 | } | |
498 | ||
499 | static void *load_section(int fd, struct ddf_super *super, void *buf, | |
500 | __u32 offset_be, __u32 len_be, int check) | |
501 | { | |
502 | unsigned long long offset = __be32_to_cpu(offset_be); | |
503 | unsigned long long len = __be32_to_cpu(len_be); | |
504 | int dofree = (buf == NULL); | |
505 | ||
506 | if (check) | |
507 | if (len != 2 && len != 8 && len != 32 | |
508 | && len != 128 && len != 512) | |
509 | return NULL; | |
510 | ||
511 | if (len > 1024) | |
512 | return NULL; | |
513 | if (buf) { | |
514 | /* All pre-allocated sections are a single block */ | |
515 | if (len != 1) | |
516 | return NULL; | |
3d2c4fc7 DW |
517 | } else if (posix_memalign(&buf, 512, len<<9) != 0) |
518 | buf = NULL; | |
6416d527 | 519 | |
a322f70c DW |
520 | if (!buf) |
521 | return NULL; | |
522 | ||
523 | if (super->active->type == 1) | |
524 | offset += __be64_to_cpu(super->active->primary_lba); | |
525 | else | |
526 | offset += __be64_to_cpu(super->active->secondary_lba); | |
527 | ||
f21e18ca | 528 | if ((unsigned long long)lseek64(fd, offset<<9, 0) != (offset<<9)) { |
a322f70c DW |
529 | if (dofree) |
530 | free(buf); | |
531 | return NULL; | |
532 | } | |
f21e18ca | 533 | if ((unsigned long long)read(fd, buf, len<<9) != (len<<9)) { |
a322f70c DW |
534 | if (dofree) |
535 | free(buf); | |
536 | return NULL; | |
537 | } | |
538 | return buf; | |
539 | } | |
540 | ||
541 | static int load_ddf_headers(int fd, struct ddf_super *super, char *devname) | |
542 | { | |
543 | unsigned long long dsize; | |
544 | ||
545 | get_dev_size(fd, NULL, &dsize); | |
546 | ||
547 | if (lseek64(fd, dsize-512, 0) < 0) { | |
548 | if (devname) | |
e7b84f9d N |
549 | pr_err("Cannot seek to anchor block on %s: %s\n", |
550 | devname, strerror(errno)); | |
a322f70c DW |
551 | return 1; |
552 | } | |
553 | if (read(fd, &super->anchor, 512) != 512) { | |
554 | if (devname) | |
e7b84f9d N |
555 | pr_err("Cannot read anchor block on %s: %s\n", |
556 | devname, strerror(errno)); | |
a322f70c DW |
557 | return 1; |
558 | } | |
559 | if (super->anchor.magic != DDF_HEADER_MAGIC) { | |
560 | if (devname) | |
e7b84f9d | 561 | pr_err("no DDF anchor found on %s\n", |
a322f70c DW |
562 | devname); |
563 | return 2; | |
564 | } | |
565 | if (calc_crc(&super->anchor, 512) != super->anchor.crc) { | |
566 | if (devname) | |
e7b84f9d | 567 | pr_err("bad CRC on anchor on %s\n", |
a322f70c DW |
568 | devname); |
569 | return 2; | |
570 | } | |
59e36268 NB |
571 | if (memcmp(super->anchor.revision, DDF_REVISION_0, 8) != 0 && |
572 | memcmp(super->anchor.revision, DDF_REVISION_2, 8) != 0) { | |
a322f70c | 573 | if (devname) |
e7b84f9d | 574 | pr_err("can only support super revision" |
59e36268 NB |
575 | " %.8s and earlier, not %.8s on %s\n", |
576 | DDF_REVISION_2, super->anchor.revision,devname); | |
a322f70c DW |
577 | return 2; |
578 | } | |
579 | if (load_ddf_header(fd, __be64_to_cpu(super->anchor.primary_lba), | |
580 | dsize >> 9, 1, | |
581 | &super->primary, &super->anchor) == 0) { | |
582 | if (devname) | |
e7b84f9d N |
583 | pr_err("Failed to load primary DDF header " |
584 | "on %s\n", devname); | |
a322f70c DW |
585 | return 2; |
586 | } | |
587 | super->active = &super->primary; | |
588 | if (load_ddf_header(fd, __be64_to_cpu(super->anchor.secondary_lba), | |
589 | dsize >> 9, 2, | |
590 | &super->secondary, &super->anchor)) { | |
591 | if ((__be32_to_cpu(super->primary.seq) | |
592 | < __be32_to_cpu(super->secondary.seq) && | |
593 | !super->secondary.openflag) | |
594 | || (__be32_to_cpu(super->primary.seq) | |
595 | == __be32_to_cpu(super->secondary.seq) && | |
596 | super->primary.openflag && !super->secondary.openflag) | |
597 | ) | |
598 | super->active = &super->secondary; | |
599 | } | |
600 | return 0; | |
601 | } | |
602 | ||
603 | static int load_ddf_global(int fd, struct ddf_super *super, char *devname) | |
604 | { | |
605 | void *ok; | |
606 | ok = load_section(fd, super, &super->controller, | |
607 | super->active->controller_section_offset, | |
608 | super->active->controller_section_length, | |
609 | 0); | |
610 | super->phys = load_section(fd, super, NULL, | |
611 | super->active->phys_section_offset, | |
612 | super->active->phys_section_length, | |
613 | 1); | |
614 | super->pdsize = __be32_to_cpu(super->active->phys_section_length) * 512; | |
615 | ||
616 | super->virt = load_section(fd, super, NULL, | |
617 | super->active->virt_section_offset, | |
618 | super->active->virt_section_length, | |
619 | 1); | |
620 | super->vdsize = __be32_to_cpu(super->active->virt_section_length) * 512; | |
621 | if (!ok || | |
622 | !super->phys || | |
623 | !super->virt) { | |
624 | free(super->phys); | |
625 | free(super->virt); | |
a2349791 NB |
626 | super->phys = NULL; |
627 | super->virt = NULL; | |
a322f70c DW |
628 | return 2; |
629 | } | |
630 | super->conflist = NULL; | |
631 | super->dlist = NULL; | |
8c3b8c2c NB |
632 | |
633 | super->max_part = __be16_to_cpu(super->active->max_partitions); | |
634 | super->mppe = __be16_to_cpu(super->active->max_primary_element_entries); | |
635 | super->conf_rec_len = __be16_to_cpu(super->active->config_record_len); | |
a322f70c DW |
636 | return 0; |
637 | } | |
638 | ||
639 | static int load_ddf_local(int fd, struct ddf_super *super, | |
640 | char *devname, int keep) | |
641 | { | |
642 | struct dl *dl; | |
643 | struct stat stb; | |
644 | char *conf; | |
f21e18ca N |
645 | unsigned int i; |
646 | unsigned int confsec; | |
b2280677 | 647 | int vnum; |
f21e18ca | 648 | unsigned int max_virt_disks = __be16_to_cpu(super->active->max_vd_entries); |
d2ca6449 | 649 | unsigned long long dsize; |
a322f70c DW |
650 | |
651 | /* First the local disk info */ | |
3d2c4fc7 | 652 | if (posix_memalign((void**)&dl, 512, |
6416d527 | 653 | sizeof(*dl) + |
3d2c4fc7 | 654 | (super->max_part) * sizeof(dl->vlist[0])) != 0) { |
e7b84f9d | 655 | pr_err("%s could not allocate disk info buffer\n", |
3d2c4fc7 DW |
656 | __func__); |
657 | return 1; | |
658 | } | |
a322f70c DW |
659 | |
660 | load_section(fd, super, &dl->disk, | |
661 | super->active->data_section_offset, | |
662 | super->active->data_section_length, | |
663 | 0); | |
503975b9 | 664 | dl->devname = devname ? xstrdup(devname) : NULL; |
598f0d58 | 665 | |
a322f70c DW |
666 | fstat(fd, &stb); |
667 | dl->major = major(stb.st_rdev); | |
668 | dl->minor = minor(stb.st_rdev); | |
669 | dl->next = super->dlist; | |
670 | dl->fd = keep ? fd : -1; | |
d2ca6449 NB |
671 | |
672 | dl->size = 0; | |
673 | if (get_dev_size(fd, devname, &dsize)) | |
674 | dl->size = dsize >> 9; | |
097bcf00 | 675 | /* If the disks have different sizes, the LBAs will differ |
676 | * between phys disks. | |
677 | * At this point here, the values in super->active must be valid | |
678 | * for this phys disk. */ | |
679 | dl->primary_lba = super->active->primary_lba; | |
680 | dl->secondary_lba = super->active->secondary_lba; | |
681 | dl->workspace_lba = super->active->workspace_lba; | |
b2280677 | 682 | dl->spare = NULL; |
f21e18ca | 683 | for (i = 0 ; i < super->max_part ; i++) |
a322f70c DW |
684 | dl->vlist[i] = NULL; |
685 | super->dlist = dl; | |
59e36268 | 686 | dl->pdnum = -1; |
f21e18ca | 687 | for (i = 0; i < __be16_to_cpu(super->active->max_pd_entries); i++) |
5575e7d9 NB |
688 | if (memcmp(super->phys->entries[i].guid, |
689 | dl->disk.guid, DDF_GUID_LEN) == 0) | |
690 | dl->pdnum = i; | |
691 | ||
a322f70c DW |
692 | /* Now the config list. */ |
693 | /* 'conf' is an array of config entries, some of which are | |
694 | * probably invalid. Those which are good need to be copied into | |
695 | * the conflist | |
696 | */ | |
a322f70c DW |
697 | |
698 | conf = load_section(fd, super, NULL, | |
699 | super->active->config_section_offset, | |
700 | super->active->config_section_length, | |
701 | 0); | |
702 | ||
b2280677 | 703 | vnum = 0; |
e223334f N |
704 | for (confsec = 0; |
705 | confsec < __be32_to_cpu(super->active->config_section_length); | |
706 | confsec += super->conf_rec_len) { | |
a322f70c | 707 | struct vd_config *vd = |
e223334f | 708 | (struct vd_config *)((char*)conf + confsec*512); |
a322f70c DW |
709 | struct vcl *vcl; |
710 | ||
b2280677 NB |
711 | if (vd->magic == DDF_SPARE_ASSIGN_MAGIC) { |
712 | if (dl->spare) | |
713 | continue; | |
3d2c4fc7 DW |
714 | if (posix_memalign((void**)&dl->spare, 512, |
715 | super->conf_rec_len*512) != 0) { | |
e7b84f9d N |
716 | pr_err("%s could not allocate spare info buf\n", |
717 | __func__); | |
3d2c4fc7 DW |
718 | return 1; |
719 | } | |
613b0d17 | 720 | |
b2280677 NB |
721 | memcpy(dl->spare, vd, super->conf_rec_len*512); |
722 | continue; | |
723 | } | |
a322f70c DW |
724 | if (vd->magic != DDF_VD_CONF_MAGIC) |
725 | continue; | |
726 | for (vcl = super->conflist; vcl; vcl = vcl->next) { | |
727 | if (memcmp(vcl->conf.guid, | |
728 | vd->guid, DDF_GUID_LEN) == 0) | |
729 | break; | |
730 | } | |
731 | ||
732 | if (vcl) { | |
b2280677 | 733 | dl->vlist[vnum++] = vcl; |
a322f70c DW |
734 | if (__be32_to_cpu(vd->seqnum) <= |
735 | __be32_to_cpu(vcl->conf.seqnum)) | |
736 | continue; | |
59e36268 | 737 | } else { |
3d2c4fc7 | 738 | if (posix_memalign((void**)&vcl, 512, |
6416d527 | 739 | (super->conf_rec_len*512 + |
3d2c4fc7 | 740 | offsetof(struct vcl, conf))) != 0) { |
e7b84f9d N |
741 | pr_err("%s could not allocate vcl buf\n", |
742 | __func__); | |
3d2c4fc7 DW |
743 | return 1; |
744 | } | |
a322f70c | 745 | vcl->next = super->conflist; |
59e36268 | 746 | vcl->block_sizes = NULL; /* FIXME not for CONCAT */ |
8ec5d685 | 747 | if (vd->sec_elmnt_count > 1) |
748 | vcl->other_bvds = | |
749 | xcalloc(vd->sec_elmnt_count - 1, | |
750 | sizeof(struct vd_config *)); | |
751 | else | |
752 | vcl->other_bvds = NULL; | |
a322f70c | 753 | super->conflist = vcl; |
b2280677 | 754 | dl->vlist[vnum++] = vcl; |
a322f70c | 755 | } |
8c3b8c2c | 756 | memcpy(&vcl->conf, vd, super->conf_rec_len*512); |
a322f70c | 757 | vcl->lba_offset = (__u64*) |
8c3b8c2c | 758 | &vcl->conf.phys_refnum[super->mppe]; |
59e36268 NB |
759 | |
760 | for (i=0; i < max_virt_disks ; i++) | |
761 | if (memcmp(super->virt->entries[i].guid, | |
762 | vcl->conf.guid, DDF_GUID_LEN)==0) | |
763 | break; | |
764 | if (i < max_virt_disks) | |
765 | vcl->vcnum = i; | |
a322f70c DW |
766 | } |
767 | free(conf); | |
768 | ||
769 | return 0; | |
770 | } | |
771 | ||
772 | #ifndef MDASSEMBLE | |
773 | static int load_super_ddf_all(struct supertype *st, int fd, | |
e1902a7b | 774 | void **sbp, char *devname); |
a322f70c | 775 | #endif |
37424f13 DW |
776 | |
777 | static void free_super_ddf(struct supertype *st); | |
778 | ||
a322f70c DW |
779 | static int load_super_ddf(struct supertype *st, int fd, |
780 | char *devname) | |
781 | { | |
782 | unsigned long long dsize; | |
783 | struct ddf_super *super; | |
784 | int rv; | |
785 | ||
a322f70c DW |
786 | if (get_dev_size(fd, devname, &dsize) == 0) |
787 | return 1; | |
788 | ||
691c6ee1 N |
789 | if (test_partition(fd)) |
790 | /* DDF is not allowed on partitions */ | |
791 | return 1; | |
792 | ||
a322f70c DW |
793 | /* 32M is a lower bound */ |
794 | if (dsize <= 32*1024*1024) { | |
97320d7c | 795 | if (devname) |
e7b84f9d N |
796 | pr_err("%s is too small for ddf: " |
797 | "size is %llu sectors.\n", | |
798 | devname, dsize>>9); | |
97320d7c | 799 | return 1; |
a322f70c DW |
800 | } |
801 | if (dsize & 511) { | |
97320d7c | 802 | if (devname) |
e7b84f9d N |
803 | pr_err("%s is an odd size for ddf: " |
804 | "size is %llu bytes.\n", | |
805 | devname, dsize); | |
97320d7c | 806 | return 1; |
a322f70c DW |
807 | } |
808 | ||
37424f13 DW |
809 | free_super_ddf(st); |
810 | ||
6416d527 | 811 | if (posix_memalign((void**)&super, 512, sizeof(*super))!= 0) { |
e7b84f9d | 812 | pr_err("malloc of %zu failed.\n", |
a322f70c DW |
813 | sizeof(*super)); |
814 | return 1; | |
815 | } | |
a2349791 | 816 | memset(super, 0, sizeof(*super)); |
a322f70c DW |
817 | |
818 | rv = load_ddf_headers(fd, super, devname); | |
819 | if (rv) { | |
820 | free(super); | |
821 | return rv; | |
822 | } | |
823 | ||
824 | /* Have valid headers and have chosen the best. Let's read in the rest*/ | |
825 | ||
826 | rv = load_ddf_global(fd, super, devname); | |
827 | ||
828 | if (rv) { | |
829 | if (devname) | |
e7b84f9d N |
830 | pr_err("Failed to load all information " |
831 | "sections on %s\n", devname); | |
a322f70c DW |
832 | free(super); |
833 | return rv; | |
834 | } | |
835 | ||
3d2c4fc7 DW |
836 | rv = load_ddf_local(fd, super, devname, 0); |
837 | ||
838 | if (rv) { | |
839 | if (devname) | |
e7b84f9d N |
840 | pr_err("Failed to load all information " |
841 | "sections on %s\n", devname); | |
3d2c4fc7 DW |
842 | free(super); |
843 | return rv; | |
844 | } | |
a322f70c DW |
845 | |
846 | /* Should possibly check the sections .... */ | |
847 | ||
848 | st->sb = super; | |
849 | if (st->ss == NULL) { | |
850 | st->ss = &super_ddf; | |
851 | st->minor_version = 0; | |
852 | st->max_devs = 512; | |
853 | } | |
854 | return 0; | |
855 | ||
856 | } | |
857 | ||
858 | static void free_super_ddf(struct supertype *st) | |
859 | { | |
860 | struct ddf_super *ddf = st->sb; | |
861 | if (ddf == NULL) | |
862 | return; | |
863 | free(ddf->phys); | |
864 | free(ddf->virt); | |
865 | while (ddf->conflist) { | |
866 | struct vcl *v = ddf->conflist; | |
867 | ddf->conflist = v->next; | |
59e36268 NB |
868 | if (v->block_sizes) |
869 | free(v->block_sizes); | |
8ec5d685 | 870 | if (v->other_bvds) |
871 | free(v->other_bvds); | |
a322f70c DW |
872 | free(v); |
873 | } | |
874 | while (ddf->dlist) { | |
875 | struct dl *d = ddf->dlist; | |
876 | ddf->dlist = d->next; | |
877 | if (d->fd >= 0) | |
878 | close(d->fd); | |
b2280677 NB |
879 | if (d->spare) |
880 | free(d->spare); | |
a322f70c DW |
881 | free(d); |
882 | } | |
8a38cb04 N |
883 | while (ddf->add_list) { |
884 | struct dl *d = ddf->add_list; | |
885 | ddf->add_list = d->next; | |
886 | if (d->fd >= 0) | |
887 | close(d->fd); | |
888 | if (d->spare) | |
889 | free(d->spare); | |
890 | free(d); | |
891 | } | |
a322f70c DW |
892 | free(ddf); |
893 | st->sb = NULL; | |
894 | } | |
895 | ||
896 | static struct supertype *match_metadata_desc_ddf(char *arg) | |
897 | { | |
898 | /* 'ddf' only support containers */ | |
899 | struct supertype *st; | |
900 | if (strcmp(arg, "ddf") != 0 && | |
901 | strcmp(arg, "default") != 0 | |
902 | ) | |
903 | return NULL; | |
904 | ||
503975b9 | 905 | st = xcalloc(1, sizeof(*st)); |
a322f70c DW |
906 | st->ss = &super_ddf; |
907 | st->max_devs = 512; | |
908 | st->minor_version = 0; | |
909 | st->sb = NULL; | |
910 | return st; | |
911 | } | |
912 | ||
a322f70c DW |
913 | #ifndef MDASSEMBLE |
914 | ||
915 | static mapping_t ddf_state[] = { | |
916 | { "Optimal", 0}, | |
917 | { "Degraded", 1}, | |
918 | { "Deleted", 2}, | |
919 | { "Missing", 3}, | |
920 | { "Failed", 4}, | |
921 | { "Partially Optimal", 5}, | |
922 | { "-reserved-", 6}, | |
923 | { "-reserved-", 7}, | |
924 | { NULL, 0} | |
925 | }; | |
926 | ||
927 | static mapping_t ddf_init_state[] = { | |
928 | { "Not Initialised", 0}, | |
929 | { "QuickInit in Progress", 1}, | |
930 | { "Fully Initialised", 2}, | |
931 | { "*UNKNOWN*", 3}, | |
932 | { NULL, 0} | |
933 | }; | |
934 | static mapping_t ddf_access[] = { | |
935 | { "Read/Write", 0}, | |
936 | { "Reserved", 1}, | |
937 | { "Read Only", 2}, | |
938 | { "Blocked (no access)", 3}, | |
939 | { NULL ,0} | |
940 | }; | |
941 | ||
942 | static mapping_t ddf_level[] = { | |
943 | { "RAID0", DDF_RAID0}, | |
944 | { "RAID1", DDF_RAID1}, | |
945 | { "RAID3", DDF_RAID3}, | |
946 | { "RAID4", DDF_RAID4}, | |
947 | { "RAID5", DDF_RAID5}, | |
948 | { "RAID1E",DDF_RAID1E}, | |
949 | { "JBOD", DDF_JBOD}, | |
950 | { "CONCAT",DDF_CONCAT}, | |
951 | { "RAID5E",DDF_RAID5E}, | |
952 | { "RAID5EE",DDF_RAID5EE}, | |
953 | { "RAID6", DDF_RAID6}, | |
954 | { NULL, 0} | |
955 | }; | |
956 | static mapping_t ddf_sec_level[] = { | |
957 | { "Striped", DDF_2STRIPED}, | |
958 | { "Mirrored", DDF_2MIRRORED}, | |
959 | { "Concat", DDF_2CONCAT}, | |
960 | { "Spanned", DDF_2SPANNED}, | |
961 | { NULL, 0} | |
962 | }; | |
963 | #endif | |
964 | ||
965 | struct num_mapping { | |
966 | int num1, num2; | |
967 | }; | |
968 | static struct num_mapping ddf_level_num[] = { | |
969 | { DDF_RAID0, 0 }, | |
970 | { DDF_RAID1, 1 }, | |
971 | { DDF_RAID3, LEVEL_UNSUPPORTED }, | |
60f18132 NB |
972 | { DDF_RAID4, 4 }, |
973 | { DDF_RAID5, 5 }, | |
a322f70c DW |
974 | { DDF_RAID1E, LEVEL_UNSUPPORTED }, |
975 | { DDF_JBOD, LEVEL_UNSUPPORTED }, | |
976 | { DDF_CONCAT, LEVEL_LINEAR }, | |
977 | { DDF_RAID5E, LEVEL_UNSUPPORTED }, | |
978 | { DDF_RAID5EE, LEVEL_UNSUPPORTED }, | |
979 | { DDF_RAID6, 6}, | |
980 | { MAXINT, MAXINT } | |
981 | }; | |
982 | ||
983 | static int map_num1(struct num_mapping *map, int num) | |
984 | { | |
985 | int i; | |
986 | for (i=0 ; map[i].num1 != MAXINT; i++) | |
987 | if (map[i].num1 == num) | |
988 | break; | |
989 | return map[i].num2; | |
990 | } | |
991 | ||
42dc2744 N |
992 | static int all_ff(char *guid) |
993 | { | |
994 | int i; | |
995 | for (i = 0; i < DDF_GUID_LEN; i++) | |
996 | if (guid[i] != (char)0xff) | |
997 | return 0; | |
998 | return 1; | |
999 | } | |
1000 | ||
a322f70c DW |
1001 | #ifndef MDASSEMBLE |
1002 | static void print_guid(char *guid, int tstamp) | |
1003 | { | |
1004 | /* A GUIDs are part (or all) ASCII and part binary. | |
1005 | * They tend to be space padded. | |
59e36268 NB |
1006 | * We print the GUID in HEX, then in parentheses add |
1007 | * any initial ASCII sequence, and a possible | |
1008 | * time stamp from bytes 16-19 | |
a322f70c DW |
1009 | */ |
1010 | int l = DDF_GUID_LEN; | |
1011 | int i; | |
59e36268 NB |
1012 | |
1013 | for (i=0 ; i<DDF_GUID_LEN ; i++) { | |
1014 | if ((i&3)==0 && i != 0) printf(":"); | |
1015 | printf("%02X", guid[i]&255); | |
1016 | } | |
1017 | ||
cfccea8c | 1018 | printf("\n ("); |
a322f70c DW |
1019 | while (l && guid[l-1] == ' ') |
1020 | l--; | |
1021 | for (i=0 ; i<l ; i++) { | |
1022 | if (guid[i] >= 0x20 && guid[i] < 0x7f) | |
1023 | fputc(guid[i], stdout); | |
1024 | else | |
59e36268 | 1025 | break; |
a322f70c DW |
1026 | } |
1027 | if (tstamp) { | |
1028 | time_t then = __be32_to_cpu(*(__u32*)(guid+16)) + DECADE; | |
1029 | char tbuf[100]; | |
1030 | struct tm *tm; | |
1031 | tm = localtime(&then); | |
59e36268 | 1032 | strftime(tbuf, 100, " %D %T",tm); |
a322f70c DW |
1033 | fputs(tbuf, stdout); |
1034 | } | |
59e36268 | 1035 | printf(")"); |
a322f70c DW |
1036 | } |
1037 | ||
1038 | static void examine_vd(int n, struct ddf_super *sb, char *guid) | |
1039 | { | |
8c3b8c2c | 1040 | int crl = sb->conf_rec_len; |
a322f70c DW |
1041 | struct vcl *vcl; |
1042 | ||
1043 | for (vcl = sb->conflist ; vcl ; vcl = vcl->next) { | |
f21e18ca | 1044 | unsigned int i; |
a322f70c DW |
1045 | struct vd_config *vc = &vcl->conf; |
1046 | ||
1047 | if (calc_crc(vc, crl*512) != vc->crc) | |
1048 | continue; | |
1049 | if (memcmp(vc->guid, guid, DDF_GUID_LEN) != 0) | |
1050 | continue; | |
1051 | ||
1052 | /* Ok, we know about this VD, let's give more details */ | |
b06e3095 | 1053 | printf(" Raid Devices[%d] : %d (", n, |
a322f70c | 1054 | __be16_to_cpu(vc->prim_elmnt_count)); |
f21e18ca | 1055 | for (i = 0; i < __be16_to_cpu(vc->prim_elmnt_count); i++) { |
b06e3095 N |
1056 | int j; |
1057 | int cnt = __be16_to_cpu(sb->phys->used_pdes); | |
1058 | for (j=0; j<cnt; j++) | |
1059 | if (vc->phys_refnum[i] == sb->phys->entries[j].refnum) | |
1060 | break; | |
1061 | if (i) printf(" "); | |
1062 | if (j < cnt) | |
1063 | printf("%d", j); | |
1064 | else | |
1065 | printf("--"); | |
1066 | } | |
1067 | printf(")\n"); | |
1068 | if (vc->chunk_shift != 255) | |
613b0d17 N |
1069 | printf(" Chunk Size[%d] : %d sectors\n", n, |
1070 | 1 << vc->chunk_shift); | |
a322f70c DW |
1071 | printf(" Raid Level[%d] : %s\n", n, |
1072 | map_num(ddf_level, vc->prl)?:"-unknown-"); | |
1073 | if (vc->sec_elmnt_count != 1) { | |
1074 | printf(" Secondary Position[%d] : %d of %d\n", n, | |
1075 | vc->sec_elmnt_seq, vc->sec_elmnt_count); | |
1076 | printf(" Secondary Level[%d] : %s\n", n, | |
1077 | map_num(ddf_sec_level, vc->srl) ?: "-unknown-"); | |
1078 | } | |
1079 | printf(" Device Size[%d] : %llu\n", n, | |
c9b6907b | 1080 | (unsigned long long)__be64_to_cpu(vc->blocks)/2); |
a322f70c | 1081 | printf(" Array Size[%d] : %llu\n", n, |
c9b6907b | 1082 | (unsigned long long)__be64_to_cpu(vc->array_blocks)/2); |
a322f70c DW |
1083 | } |
1084 | } | |
1085 | ||
1086 | static void examine_vds(struct ddf_super *sb) | |
1087 | { | |
1088 | int cnt = __be16_to_cpu(sb->virt->populated_vdes); | |
1089 | int i; | |
1090 | printf(" Virtual Disks : %d\n", cnt); | |
1091 | ||
1092 | for (i=0; i<cnt; i++) { | |
1093 | struct virtual_entry *ve = &sb->virt->entries[i]; | |
b06e3095 | 1094 | printf("\n"); |
a322f70c DW |
1095 | printf(" VD GUID[%d] : ", i); print_guid(ve->guid, 1); |
1096 | printf("\n"); | |
1097 | printf(" unit[%d] : %d\n", i, __be16_to_cpu(ve->unit)); | |
1098 | printf(" state[%d] : %s, %s%s\n", i, | |
1099 | map_num(ddf_state, ve->state & 7), | |
1100 | (ve->state & 8) ? "Morphing, ": "", | |
1101 | (ve->state & 16)? "Not Consistent" : "Consistent"); | |
1102 | printf(" init state[%d] : %s\n", i, | |
1103 | map_num(ddf_init_state, ve->init_state&3)); | |
1104 | printf(" access[%d] : %s\n", i, | |
1105 | map_num(ddf_access, (ve->init_state>>6) & 3)); | |
1106 | printf(" Name[%d] : %.16s\n", i, ve->name); | |
1107 | examine_vd(i, sb, ve->guid); | |
1108 | } | |
1109 | if (cnt) printf("\n"); | |
1110 | } | |
1111 | ||
1112 | static void examine_pds(struct ddf_super *sb) | |
1113 | { | |
1114 | int cnt = __be16_to_cpu(sb->phys->used_pdes); | |
1115 | int i; | |
1116 | struct dl *dl; | |
1117 | printf(" Physical Disks : %d\n", cnt); | |
962371a5 | 1118 | printf(" Number RefNo Size Device Type/State\n"); |
a322f70c DW |
1119 | |
1120 | for (i=0 ; i<cnt ; i++) { | |
1121 | struct phys_disk_entry *pd = &sb->phys->entries[i]; | |
1122 | int type = __be16_to_cpu(pd->type); | |
1123 | int state = __be16_to_cpu(pd->state); | |
1124 | ||
b06e3095 N |
1125 | //printf(" PD GUID[%d] : ", i); print_guid(pd->guid, 0); |
1126 | //printf("\n"); | |
1127 | printf(" %3d %08x ", i, | |
a322f70c | 1128 | __be32_to_cpu(pd->refnum)); |
613b0d17 | 1129 | printf("%8lluK ", |
c9b6907b | 1130 | (unsigned long long)__be64_to_cpu(pd->config_size)>>1); |
b06e3095 N |
1131 | for (dl = sb->dlist; dl ; dl = dl->next) { |
1132 | if (dl->disk.refnum == pd->refnum) { | |
1133 | char *dv = map_dev(dl->major, dl->minor, 0); | |
1134 | if (dv) { | |
962371a5 | 1135 | printf("%-15s", dv); |
b06e3095 N |
1136 | break; |
1137 | } | |
1138 | } | |
1139 | } | |
1140 | if (!dl) | |
962371a5 | 1141 | printf("%15s",""); |
b06e3095 | 1142 | printf(" %s%s%s%s%s", |
a322f70c | 1143 | (type&2) ? "active":"", |
b06e3095 | 1144 | (type&4) ? "Global-Spare":"", |
a322f70c DW |
1145 | (type&8) ? "spare" : "", |
1146 | (type&16)? ", foreign" : "", | |
1147 | (type&32)? "pass-through" : ""); | |
18cb4496 N |
1148 | if (state & DDF_Failed) |
1149 | /* This over-rides these three */ | |
1150 | state &= ~(DDF_Online|DDF_Rebuilding|DDF_Transition); | |
b06e3095 | 1151 | printf("/%s%s%s%s%s%s%s", |
a322f70c DW |
1152 | (state&1)? "Online": "Offline", |
1153 | (state&2)? ", Failed": "", | |
1154 | (state&4)? ", Rebuilding": "", | |
1155 | (state&8)? ", in-transition": "", | |
b06e3095 N |
1156 | (state&16)? ", SMART-errors": "", |
1157 | (state&32)? ", Unrecovered-Read-Errors": "", | |
a322f70c | 1158 | (state&64)? ", Missing" : ""); |
a322f70c DW |
1159 | printf("\n"); |
1160 | } | |
1161 | } | |
1162 | ||
1163 | static void examine_super_ddf(struct supertype *st, char *homehost) | |
1164 | { | |
1165 | struct ddf_super *sb = st->sb; | |
1166 | ||
1167 | printf(" Magic : %08x\n", __be32_to_cpu(sb->anchor.magic)); | |
1168 | printf(" Version : %.8s\n", sb->anchor.revision); | |
598f0d58 NB |
1169 | printf("Controller GUID : "); print_guid(sb->controller.guid, 0); |
1170 | printf("\n"); | |
1171 | printf(" Container GUID : "); print_guid(sb->anchor.guid, 1); | |
a322f70c DW |
1172 | printf("\n"); |
1173 | printf(" Seq : %08x\n", __be32_to_cpu(sb->active->seq)); | |
1174 | printf(" Redundant hdr : %s\n", sb->secondary.magic == DDF_HEADER_MAGIC | |
1175 | ?"yes" : "no"); | |
1176 | examine_vds(sb); | |
1177 | examine_pds(sb); | |
1178 | } | |
1179 | ||
a5d85af7 | 1180 | static void getinfo_super_ddf(struct supertype *st, struct mdinfo *info, char *map); |
ff54de6e | 1181 | |
42dc2744 | 1182 | static void uuid_from_super_ddf(struct supertype *st, int uuid[4]); |
ff54de6e | 1183 | |
061f2c6a | 1184 | static void brief_examine_super_ddf(struct supertype *st, int verbose) |
4737ae25 N |
1185 | { |
1186 | /* We just write a generic DDF ARRAY entry | |
1187 | */ | |
1188 | struct mdinfo info; | |
1189 | char nbuf[64]; | |
a5d85af7 | 1190 | getinfo_super_ddf(st, &info, NULL); |
4737ae25 N |
1191 | fname_from_uuid(st, &info, nbuf, ':'); |
1192 | ||
1193 | printf("ARRAY metadata=ddf UUID=%s\n", nbuf + 5); | |
1194 | } | |
1195 | ||
1196 | static void brief_examine_subarrays_ddf(struct supertype *st, int verbose) | |
a322f70c DW |
1197 | { |
1198 | /* We just write a generic DDF ARRAY entry | |
a322f70c | 1199 | */ |
42dc2744 | 1200 | struct ddf_super *ddf = st->sb; |
ff54de6e | 1201 | struct mdinfo info; |
f21e18ca | 1202 | unsigned int i; |
ff54de6e | 1203 | char nbuf[64]; |
a5d85af7 | 1204 | getinfo_super_ddf(st, &info, NULL); |
ff54de6e | 1205 | fname_from_uuid(st, &info, nbuf, ':'); |
42dc2744 | 1206 | |
f21e18ca | 1207 | for (i = 0; i < __be16_to_cpu(ddf->virt->max_vdes); i++) { |
42dc2744 N |
1208 | struct virtual_entry *ve = &ddf->virt->entries[i]; |
1209 | struct vcl vcl; | |
1210 | char nbuf1[64]; | |
1211 | if (all_ff(ve->guid)) | |
1212 | continue; | |
1213 | memcpy(vcl.conf.guid, ve->guid, DDF_GUID_LEN); | |
1214 | ddf->currentconf =&vcl; | |
1215 | uuid_from_super_ddf(st, info.uuid); | |
1216 | fname_from_uuid(st, &info, nbuf1, ':'); | |
1217 | printf("ARRAY container=%s member=%d UUID=%s\n", | |
1218 | nbuf+5, i, nbuf1+5); | |
1219 | } | |
a322f70c DW |
1220 | } |
1221 | ||
bceedeec N |
1222 | static void export_examine_super_ddf(struct supertype *st) |
1223 | { | |
1224 | struct mdinfo info; | |
1225 | char nbuf[64]; | |
a5d85af7 | 1226 | getinfo_super_ddf(st, &info, NULL); |
bceedeec N |
1227 | fname_from_uuid(st, &info, nbuf, ':'); |
1228 | printf("MD_METADATA=ddf\n"); | |
1229 | printf("MD_LEVEL=container\n"); | |
1230 | printf("MD_UUID=%s\n", nbuf+5); | |
1231 | } | |
bceedeec | 1232 | |
a322f70c DW |
1233 | static void detail_super_ddf(struct supertype *st, char *homehost) |
1234 | { | |
1235 | /* FIXME later | |
1236 | * Could print DDF GUID | |
1237 | * Need to find which array | |
1238 | * If whole, briefly list all arrays | |
1239 | * If one, give name | |
1240 | */ | |
1241 | } | |
1242 | ||
1243 | static void brief_detail_super_ddf(struct supertype *st) | |
1244 | { | |
1245 | /* FIXME I really need to know which array we are detailing. | |
1246 | * Can that be stored in ddf_super?? | |
1247 | */ | |
1248 | // struct ddf_super *ddf = st->sb; | |
ff54de6e N |
1249 | struct mdinfo info; |
1250 | char nbuf[64]; | |
a5d85af7 | 1251 | getinfo_super_ddf(st, &info, NULL); |
ff54de6e N |
1252 | fname_from_uuid(st, &info, nbuf,':'); |
1253 | printf(" UUID=%s", nbuf + 5); | |
a322f70c | 1254 | } |
a322f70c DW |
1255 | #endif |
1256 | ||
1257 | static int match_home_ddf(struct supertype *st, char *homehost) | |
1258 | { | |
1259 | /* It matches 'this' host if the controller is a | |
1260 | * Linux-MD controller with vendor_data matching | |
1261 | * the hostname | |
1262 | */ | |
1263 | struct ddf_super *ddf = st->sb; | |
f21e18ca | 1264 | unsigned int len; |
d1d3482b N |
1265 | |
1266 | if (!homehost) | |
1267 | return 0; | |
1268 | len = strlen(homehost); | |
a322f70c DW |
1269 | |
1270 | return (memcmp(ddf->controller.guid, T10, 8) == 0 && | |
1271 | len < sizeof(ddf->controller.vendor_data) && | |
1272 | memcmp(ddf->controller.vendor_data, homehost,len) == 0 && | |
1273 | ddf->controller.vendor_data[len] == 0); | |
1274 | } | |
1275 | ||
0e600426 | 1276 | #ifndef MDASSEMBLE |
f21e18ca | 1277 | static struct vd_config *find_vdcr(struct ddf_super *ddf, unsigned int inst) |
a322f70c | 1278 | { |
7a7cc504 | 1279 | struct vcl *v; |
59e36268 | 1280 | |
7a7cc504 | 1281 | for (v = ddf->conflist; v; v = v->next) |
59e36268 | 1282 | if (inst == v->vcnum) |
7a7cc504 NB |
1283 | return &v->conf; |
1284 | return NULL; | |
1285 | } | |
0e600426 | 1286 | #endif |
7a7cc504 NB |
1287 | |
1288 | static int find_phys(struct ddf_super *ddf, __u32 phys_refnum) | |
1289 | { | |
1290 | /* Find the entry in phys_disk which has the given refnum | |
1291 | * and return it's index | |
1292 | */ | |
f21e18ca N |
1293 | unsigned int i; |
1294 | for (i = 0; i < __be16_to_cpu(ddf->phys->max_pdes); i++) | |
7a7cc504 NB |
1295 | if (ddf->phys->entries[i].refnum == phys_refnum) |
1296 | return i; | |
1297 | return -1; | |
a322f70c DW |
1298 | } |
1299 | ||
1300 | static void uuid_from_super_ddf(struct supertype *st, int uuid[4]) | |
1301 | { | |
1302 | /* The uuid returned here is used for: | |
1303 | * uuid to put into bitmap file (Create, Grow) | |
1304 | * uuid for backup header when saving critical section (Grow) | |
1305 | * comparing uuids when re-adding a device into an array | |
51006d85 N |
1306 | * In these cases the uuid required is that of the data-array, |
1307 | * not the device-set. | |
1308 | * uuid to recognise same set when adding a missing device back | |
1309 | * to an array. This is a uuid for the device-set. | |
613b0d17 | 1310 | * |
a322f70c DW |
1311 | * For each of these we can make do with a truncated |
1312 | * or hashed uuid rather than the original, as long as | |
1313 | * everyone agrees. | |
a322f70c DW |
1314 | * In the case of SVD we assume the BVD is of interest, |
1315 | * though that might be the case if a bitmap were made for | |
1316 | * a mirrored SVD - worry about that later. | |
1317 | * So we need to find the VD configuration record for the | |
1318 | * relevant BVD and extract the GUID and Secondary_Element_Seq. | |
1319 | * The first 16 bytes of the sha1 of these is used. | |
1320 | */ | |
1321 | struct ddf_super *ddf = st->sb; | |
d2ca6449 | 1322 | struct vcl *vcl = ddf->currentconf; |
c5afc314 N |
1323 | char *guid; |
1324 | char buf[20]; | |
1325 | struct sha1_ctx ctx; | |
a322f70c | 1326 | |
c5afc314 N |
1327 | if (vcl) |
1328 | guid = vcl->conf.guid; | |
1329 | else | |
1330 | guid = ddf->anchor.guid; | |
1331 | ||
1332 | sha1_init_ctx(&ctx); | |
1333 | sha1_process_bytes(guid, DDF_GUID_LEN, &ctx); | |
c5afc314 N |
1334 | sha1_finish_ctx(&ctx, buf); |
1335 | memcpy(uuid, buf, 4*4); | |
a322f70c DW |
1336 | } |
1337 | ||
a5d85af7 | 1338 | static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info, char *map); |
78e44928 | 1339 | |
a5d85af7 | 1340 | static void getinfo_super_ddf(struct supertype *st, struct mdinfo *info, char *map) |
a322f70c DW |
1341 | { |
1342 | struct ddf_super *ddf = st->sb; | |
a5d85af7 | 1343 | int map_disks = info->array.raid_disks; |
90fa1a29 | 1344 | __u32 *cptr; |
a322f70c | 1345 | |
78e44928 | 1346 | if (ddf->currentconf) { |
a5d85af7 | 1347 | getinfo_super_ddf_bvd(st, info, map); |
78e44928 NB |
1348 | return; |
1349 | } | |
95eeceeb | 1350 | memset(info, 0, sizeof(*info)); |
78e44928 | 1351 | |
a322f70c DW |
1352 | info->array.raid_disks = __be16_to_cpu(ddf->phys->used_pdes); |
1353 | info->array.level = LEVEL_CONTAINER; | |
1354 | info->array.layout = 0; | |
1355 | info->array.md_minor = -1; | |
90fa1a29 JS |
1356 | cptr = (__u32 *)(ddf->anchor.guid + 16); |
1357 | info->array.ctime = DECADE + __be32_to_cpu(*cptr); | |
1358 | ||
a322f70c DW |
1359 | info->array.utime = 0; |
1360 | info->array.chunk_size = 0; | |
510242aa | 1361 | info->container_enough = 1; |
a322f70c | 1362 | |
a322f70c DW |
1363 | info->disk.major = 0; |
1364 | info->disk.minor = 0; | |
cba0191b NB |
1365 | if (ddf->dlist) { |
1366 | info->disk.number = __be32_to_cpu(ddf->dlist->disk.refnum); | |
59e36268 | 1367 | info->disk.raid_disk = find_phys(ddf, ddf->dlist->disk.refnum); |
d2ca6449 NB |
1368 | |
1369 | info->data_offset = __be64_to_cpu(ddf->phys-> | |
613b0d17 N |
1370 | entries[info->disk.raid_disk]. |
1371 | config_size); | |
d2ca6449 | 1372 | info->component_size = ddf->dlist->size - info->data_offset; |
cba0191b NB |
1373 | } else { |
1374 | info->disk.number = -1; | |
661dce36 | 1375 | info->disk.raid_disk = -1; |
cba0191b NB |
1376 | // info->disk.raid_disk = find refnum in the table and use index; |
1377 | } | |
f22385f9 | 1378 | info->disk.state = (1 << MD_DISK_SYNC) | (1 << MD_DISK_ACTIVE); |
a19c88b8 | 1379 | |
921d9e16 | 1380 | info->recovery_start = MaxSector; |
a19c88b8 | 1381 | info->reshape_active = 0; |
6e75048b | 1382 | info->recovery_blocked = 0; |
c5afc314 | 1383 | info->name[0] = 0; |
a322f70c | 1384 | |
f35f2525 N |
1385 | info->array.major_version = -1; |
1386 | info->array.minor_version = -2; | |
159c3a1a | 1387 | strcpy(info->text_version, "ddf"); |
a67dd8cc | 1388 | info->safe_mode_delay = 0; |
159c3a1a | 1389 | |
c5afc314 | 1390 | uuid_from_super_ddf(st, info->uuid); |
a322f70c | 1391 | |
a5d85af7 N |
1392 | if (map) { |
1393 | int i; | |
1394 | for (i = 0 ; i < map_disks; i++) { | |
1395 | if (i < info->array.raid_disks && | |
1396 | (__be16_to_cpu(ddf->phys->entries[i].state) & DDF_Online) && | |
1397 | !(__be16_to_cpu(ddf->phys->entries[i].state) & DDF_Failed)) | |
1398 | map[i] = 1; | |
1399 | else | |
1400 | map[i] = 0; | |
1401 | } | |
1402 | } | |
a322f70c DW |
1403 | } |
1404 | ||
598f0d58 NB |
1405 | static int rlq_to_layout(int rlq, int prl, int raiddisks); |
1406 | ||
a5d85af7 | 1407 | static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info, char *map) |
a322f70c DW |
1408 | { |
1409 | struct ddf_super *ddf = st->sb; | |
d2ca6449 NB |
1410 | struct vcl *vc = ddf->currentconf; |
1411 | int cd = ddf->currentdev; | |
db42fa9b | 1412 | int j; |
8592f29d | 1413 | struct dl *dl; |
a5d85af7 | 1414 | int map_disks = info->array.raid_disks; |
90fa1a29 | 1415 | __u32 *cptr; |
a322f70c | 1416 | |
95eeceeb | 1417 | memset(info, 0, sizeof(*info)); |
a322f70c DW |
1418 | /* FIXME this returns BVD info - what if we want SVD ?? */ |
1419 | ||
d2ca6449 NB |
1420 | info->array.raid_disks = __be16_to_cpu(vc->conf.prim_elmnt_count); |
1421 | info->array.level = map_num1(ddf_level_num, vc->conf.prl); | |
1422 | info->array.layout = rlq_to_layout(vc->conf.rlq, vc->conf.prl, | |
598f0d58 | 1423 | info->array.raid_disks); |
a322f70c | 1424 | info->array.md_minor = -1; |
90fa1a29 JS |
1425 | cptr = (__u32 *)(vc->conf.guid + 16); |
1426 | info->array.ctime = DECADE + __be32_to_cpu(*cptr); | |
d2ca6449 NB |
1427 | info->array.utime = DECADE + __be32_to_cpu(vc->conf.timestamp); |
1428 | info->array.chunk_size = 512 << vc->conf.chunk_shift; | |
da9b4a62 | 1429 | info->custom_array_size = 0; |
d2ca6449 | 1430 | |
f21e18ca | 1431 | if (cd >= 0 && (unsigned)cd < ddf->mppe) { |
d2ca6449 NB |
1432 | info->data_offset = __be64_to_cpu(vc->lba_offset[cd]); |
1433 | if (vc->block_sizes) | |
1434 | info->component_size = vc->block_sizes[cd]; | |
1435 | else | |
1436 | info->component_size = __be64_to_cpu(vc->conf.blocks); | |
1437 | } | |
a322f70c | 1438 | |
fb204fb2 N |
1439 | for (dl = ddf->dlist; dl ; dl = dl->next) |
1440 | if (dl->raiddisk == ddf->currentdev) | |
1441 | break; | |
1442 | ||
a322f70c DW |
1443 | info->disk.major = 0; |
1444 | info->disk.minor = 0; | |
fb204fb2 | 1445 | info->disk.state = 0; |
8592f29d N |
1446 | if (dl) { |
1447 | info->disk.major = dl->major; | |
1448 | info->disk.minor = dl->minor; | |
fb204fb2 N |
1449 | info->disk.raid_disk = dl->raiddisk; |
1450 | info->disk.number = dl->pdnum; | |
1451 | info->disk.state = (1<<MD_DISK_SYNC)|(1<<MD_DISK_ACTIVE); | |
8592f29d | 1452 | } |
a322f70c | 1453 | |
103f2410 NB |
1454 | info->container_member = ddf->currentconf->vcnum; |
1455 | ||
921d9e16 | 1456 | info->recovery_start = MaxSector; |
80d26cb2 | 1457 | info->resync_start = 0; |
624c5ad4 | 1458 | info->reshape_active = 0; |
6e75048b | 1459 | info->recovery_blocked = 0; |
80d26cb2 NB |
1460 | if (!(ddf->virt->entries[info->container_member].state |
1461 | & DDF_state_inconsistent) && | |
1462 | (ddf->virt->entries[info->container_member].init_state | |
1463 | & DDF_initstate_mask) | |
1464 | == DDF_init_full) | |
b7528a20 | 1465 | info->resync_start = MaxSector; |
80d26cb2 | 1466 | |
a322f70c DW |
1467 | uuid_from_super_ddf(st, info->uuid); |
1468 | ||
f35f2525 N |
1469 | info->array.major_version = -1; |
1470 | info->array.minor_version = -2; | |
9b63e648 | 1471 | sprintf(info->text_version, "/%s/%d", |
4dd2df09 | 1472 | st->container_devnm, |
9b63e648 | 1473 | info->container_member); |
a67dd8cc | 1474 | info->safe_mode_delay = 200; |
159c3a1a | 1475 | |
db42fa9b N |
1476 | memcpy(info->name, ddf->virt->entries[info->container_member].name, 16); |
1477 | info->name[16]=0; | |
1478 | for(j=0; j<16; j++) | |
1479 | if (info->name[j] == ' ') | |
1480 | info->name[j] = 0; | |
a5d85af7 N |
1481 | |
1482 | if (map) | |
1483 | for (j = 0; j < map_disks; j++) { | |
1484 | map[j] = 0; | |
1485 | if (j < info->array.raid_disks) { | |
1486 | int i = find_phys(ddf, vc->conf.phys_refnum[j]); | |
613b0d17 | 1487 | if (i >= 0 && |
a5d85af7 N |
1488 | (__be16_to_cpu(ddf->phys->entries[i].state) & DDF_Online) && |
1489 | !(__be16_to_cpu(ddf->phys->entries[i].state) & DDF_Failed)) | |
1490 | map[i] = 1; | |
1491 | } | |
1492 | } | |
a322f70c DW |
1493 | } |
1494 | ||
1495 | static int update_super_ddf(struct supertype *st, struct mdinfo *info, | |
1496 | char *update, | |
1497 | char *devname, int verbose, | |
1498 | int uuid_set, char *homehost) | |
1499 | { | |
1500 | /* For 'assemble' and 'force' we need to return non-zero if any | |
1501 | * change was made. For others, the return value is ignored. | |
1502 | * Update options are: | |
1503 | * force-one : This device looks a bit old but needs to be included, | |
1504 | * update age info appropriately. | |
1505 | * assemble: clear any 'faulty' flag to allow this device to | |
1506 | * be assembled. | |
1507 | * force-array: Array is degraded but being forced, mark it clean | |
1508 | * if that will be needed to assemble it. | |
1509 | * | |
1510 | * newdev: not used ???? | |
1511 | * grow: Array has gained a new device - this is currently for | |
1512 | * linear only | |
1513 | * resync: mark as dirty so a resync will happen. | |
59e36268 | 1514 | * uuid: Change the uuid of the array to match what is given |
a322f70c DW |
1515 | * homehost: update the recorded homehost |
1516 | * name: update the name - preserving the homehost | |
1517 | * _reshape_progress: record new reshape_progress position. | |
1518 | * | |
1519 | * Following are not relevant for this version: | |
1520 | * sparc2.2 : update from old dodgey metadata | |
1521 | * super-minor: change the preferred_minor number | |
1522 | * summaries: update redundant counters. | |
1523 | */ | |
1524 | int rv = 0; | |
1525 | // struct ddf_super *ddf = st->sb; | |
7a7cc504 | 1526 | // struct vd_config *vd = find_vdcr(ddf, info->container_member); |
a322f70c DW |
1527 | // struct virtual_entry *ve = find_ve(ddf); |
1528 | ||
a322f70c DW |
1529 | /* we don't need to handle "force-*" or "assemble" as |
1530 | * there is no need to 'trick' the kernel. We the metadata is | |
1531 | * first updated to activate the array, all the implied modifications | |
1532 | * will just happen. | |
1533 | */ | |
1534 | ||
1535 | if (strcmp(update, "grow") == 0) { | |
1536 | /* FIXME */ | |
1e2b2765 | 1537 | } else if (strcmp(update, "resync") == 0) { |
a322f70c | 1538 | // info->resync_checkpoint = 0; |
1e2b2765 | 1539 | } else if (strcmp(update, "homehost") == 0) { |
a322f70c DW |
1540 | /* homehost is stored in controller->vendor_data, |
1541 | * or it is when we are the vendor | |
1542 | */ | |
1543 | // if (info->vendor_is_local) | |
1544 | // strcpy(ddf->controller.vendor_data, homehost); | |
1e2b2765 | 1545 | rv = -1; |
f49208ec | 1546 | } else if (strcmp(update, "name") == 0) { |
a322f70c DW |
1547 | /* name is stored in virtual_entry->name */ |
1548 | // memset(ve->name, ' ', 16); | |
1549 | // strncpy(ve->name, info->name, 16); | |
1e2b2765 | 1550 | rv = -1; |
f49208ec | 1551 | } else if (strcmp(update, "_reshape_progress") == 0) { |
a322f70c | 1552 | /* We don't support reshape yet */ |
f49208ec N |
1553 | } else if (strcmp(update, "assemble") == 0 ) { |
1554 | /* Do nothing, just succeed */ | |
1555 | rv = 0; | |
1e2b2765 N |
1556 | } else |
1557 | rv = -1; | |
a322f70c DW |
1558 | |
1559 | // update_all_csum(ddf); | |
1560 | ||
1561 | return rv; | |
1562 | } | |
1563 | ||
5f8097be NB |
1564 | static void make_header_guid(char *guid) |
1565 | { | |
1566 | __u32 stamp; | |
5f8097be NB |
1567 | /* Create a DDF Header of Virtual Disk GUID */ |
1568 | ||
1569 | /* 24 bytes of fiction required. | |
1570 | * first 8 are a 'vendor-id' - "Linux-MD" | |
1571 | * next 8 are controller type.. how about 0X DEAD BEEF 0000 0000 | |
1572 | * Remaining 8 random number plus timestamp | |
1573 | */ | |
1574 | memcpy(guid, T10, sizeof(T10)); | |
1575 | stamp = __cpu_to_be32(0xdeadbeef); | |
1576 | memcpy(guid+8, &stamp, 4); | |
1577 | stamp = __cpu_to_be32(0); | |
1578 | memcpy(guid+12, &stamp, 4); | |
1579 | stamp = __cpu_to_be32(time(0) - DECADE); | |
1580 | memcpy(guid+16, &stamp, 4); | |
bfb7ea78 | 1581 | stamp = random32(); |
5f8097be | 1582 | memcpy(guid+20, &stamp, 4); |
5f8097be | 1583 | } |
59e36268 | 1584 | |
78e44928 NB |
1585 | static int init_super_ddf_bvd(struct supertype *st, |
1586 | mdu_array_info_t *info, | |
1587 | unsigned long long size, | |
1588 | char *name, char *homehost, | |
83cd1e97 | 1589 | int *uuid, unsigned long long data_offset); |
78e44928 | 1590 | |
a322f70c DW |
1591 | static int init_super_ddf(struct supertype *st, |
1592 | mdu_array_info_t *info, | |
1593 | unsigned long long size, char *name, char *homehost, | |
83cd1e97 | 1594 | int *uuid, unsigned long long data_offset) |
a322f70c DW |
1595 | { |
1596 | /* This is primarily called by Create when creating a new array. | |
1597 | * We will then get add_to_super called for each component, and then | |
1598 | * write_init_super called to write it out to each device. | |
1599 | * For DDF, Create can create on fresh devices or on a pre-existing | |
1600 | * array. | |
1601 | * To create on a pre-existing array a different method will be called. | |
1602 | * This one is just for fresh drives. | |
1603 | * | |
1604 | * We need to create the entire 'ddf' structure which includes: | |
1605 | * DDF headers - these are easy. | |
1606 | * Controller data - a Sector describing this controller .. not that | |
1607 | * this is a controller exactly. | |
1608 | * Physical Disk Record - one entry per device, so | |
1609 | * leave plenty of space. | |
1610 | * Virtual Disk Records - again, just leave plenty of space. | |
1611 | * This just lists VDs, doesn't give details | |
1612 | * Config records - describes the VDs that use this disk | |
1613 | * DiskData - describes 'this' device. | |
1614 | * BadBlockManagement - empty | |
1615 | * Diag Space - empty | |
1616 | * Vendor Logs - Could we put bitmaps here? | |
1617 | * | |
1618 | */ | |
1619 | struct ddf_super *ddf; | |
1620 | char hostname[17]; | |
1621 | int hostlen; | |
a322f70c DW |
1622 | int max_phys_disks, max_virt_disks; |
1623 | unsigned long long sector; | |
1624 | int clen; | |
1625 | int i; | |
1626 | int pdsize, vdsize; | |
1627 | struct phys_disk *pd; | |
1628 | struct virtual_disk *vd; | |
1629 | ||
83cd1e97 N |
1630 | if (data_offset != INVALID_SECTORS) { |
1631 | fprintf(stderr, Name ": data-offset not supported by DDF\n"); | |
1632 | return 0; | |
1633 | } | |
1634 | ||
78e44928 | 1635 | if (st->sb) |
83cd1e97 N |
1636 | return init_super_ddf_bvd(st, info, size, name, homehost, uuid, |
1637 | data_offset); | |
ba7eb04f | 1638 | |
3d2c4fc7 | 1639 | if (posix_memalign((void**)&ddf, 512, sizeof(*ddf)) != 0) { |
e7b84f9d | 1640 | pr_err("%s could not allocate superblock\n", __func__); |
3d2c4fc7 DW |
1641 | return 0; |
1642 | } | |
6264b437 | 1643 | memset(ddf, 0, sizeof(*ddf)); |
a322f70c DW |
1644 | ddf->dlist = NULL; /* no physical disks yet */ |
1645 | ddf->conflist = NULL; /* No virtual disks yet */ | |
955e9ea1 DW |
1646 | st->sb = ddf; |
1647 | ||
1648 | if (info == NULL) { | |
1649 | /* zeroing superblock */ | |
1650 | return 0; | |
1651 | } | |
a322f70c DW |
1652 | |
1653 | /* At least 32MB *must* be reserved for the ddf. So let's just | |
1654 | * start 32MB from the end, and put the primary header there. | |
1655 | * Don't do secondary for now. | |
1656 | * We don't know exactly where that will be yet as it could be | |
1657 | * different on each device. To just set up the lengths. | |
1658 | * | |
1659 | */ | |
1660 | ||
1661 | ddf->anchor.magic = DDF_HEADER_MAGIC; | |
5f8097be | 1662 | make_header_guid(ddf->anchor.guid); |
a322f70c | 1663 | |
59e36268 | 1664 | memcpy(ddf->anchor.revision, DDF_REVISION_2, 8); |
a322f70c DW |
1665 | ddf->anchor.seq = __cpu_to_be32(1); |
1666 | ddf->anchor.timestamp = __cpu_to_be32(time(0) - DECADE); | |
1667 | ddf->anchor.openflag = 0xFF; | |
1668 | ddf->anchor.foreignflag = 0; | |
1669 | ddf->anchor.enforcegroups = 0; /* Is this best?? */ | |
1670 | ddf->anchor.pad0 = 0xff; | |
1671 | memset(ddf->anchor.pad1, 0xff, 12); | |
1672 | memset(ddf->anchor.header_ext, 0xff, 32); | |
1673 | ddf->anchor.primary_lba = ~(__u64)0; | |
1674 | ddf->anchor.secondary_lba = ~(__u64)0; | |
1675 | ddf->anchor.type = DDF_HEADER_ANCHOR; | |
1676 | memset(ddf->anchor.pad2, 0xff, 3); | |
1677 | ddf->anchor.workspace_len = __cpu_to_be32(32768); /* Must be reserved */ | |
1678 | ddf->anchor.workspace_lba = ~(__u64)0; /* Put this at bottom | |
1679 | of 32M reserved.. */ | |
1680 | max_phys_disks = 1023; /* Should be enough */ | |
1681 | ddf->anchor.max_pd_entries = __cpu_to_be16(max_phys_disks); | |
1682 | max_virt_disks = 255; | |
1683 | ddf->anchor.max_vd_entries = __cpu_to_be16(max_virt_disks); /* ?? */ | |
1684 | ddf->anchor.max_partitions = __cpu_to_be16(64); /* ?? */ | |
1685 | ddf->max_part = 64; | |
8c3b8c2c | 1686 | ddf->mppe = 256; |
59e36268 NB |
1687 | ddf->conf_rec_len = 1 + ROUND_UP(ddf->mppe * (4+8), 512)/512; |
1688 | ddf->anchor.config_record_len = __cpu_to_be16(ddf->conf_rec_len); | |
1689 | ddf->anchor.max_primary_element_entries = __cpu_to_be16(ddf->mppe); | |
a322f70c | 1690 | memset(ddf->anchor.pad3, 0xff, 54); |
a322f70c DW |
1691 | /* controller sections is one sector long immediately |
1692 | * after the ddf header */ | |
1693 | sector = 1; | |
1694 | ddf->anchor.controller_section_offset = __cpu_to_be32(sector); | |
1695 | ddf->anchor.controller_section_length = __cpu_to_be32(1); | |
1696 | sector += 1; | |
1697 | ||
1698 | /* phys is 8 sectors after that */ | |
1699 | pdsize = ROUND_UP(sizeof(struct phys_disk) + | |
1700 | sizeof(struct phys_disk_entry)*max_phys_disks, | |
1701 | 512); | |
1702 | switch(pdsize/512) { | |
1703 | case 2: case 8: case 32: case 128: case 512: break; | |
1704 | default: abort(); | |
1705 | } | |
1706 | ddf->anchor.phys_section_offset = __cpu_to_be32(sector); | |
1707 | ddf->anchor.phys_section_length = | |
1708 | __cpu_to_be32(pdsize/512); /* max_primary_element_entries/8 */ | |
1709 | sector += pdsize/512; | |
1710 | ||
1711 | /* virt is another 32 sectors */ | |
1712 | vdsize = ROUND_UP(sizeof(struct virtual_disk) + | |
1713 | sizeof(struct virtual_entry) * max_virt_disks, | |
1714 | 512); | |
1715 | switch(vdsize/512) { | |
1716 | case 2: case 8: case 32: case 128: case 512: break; | |
1717 | default: abort(); | |
1718 | } | |
1719 | ddf->anchor.virt_section_offset = __cpu_to_be32(sector); | |
1720 | ddf->anchor.virt_section_length = | |
1721 | __cpu_to_be32(vdsize/512); /* max_vd_entries/8 */ | |
1722 | sector += vdsize/512; | |
1723 | ||
59e36268 | 1724 | clen = ddf->conf_rec_len * (ddf->max_part+1); |
a322f70c DW |
1725 | ddf->anchor.config_section_offset = __cpu_to_be32(sector); |
1726 | ddf->anchor.config_section_length = __cpu_to_be32(clen); | |
1727 | sector += clen; | |
1728 | ||
1729 | ddf->anchor.data_section_offset = __cpu_to_be32(sector); | |
1730 | ddf->anchor.data_section_length = __cpu_to_be32(1); | |
1731 | sector += 1; | |
1732 | ||
1733 | ddf->anchor.bbm_section_length = __cpu_to_be32(0); | |
1734 | ddf->anchor.bbm_section_offset = __cpu_to_be32(0xFFFFFFFF); | |
1735 | ddf->anchor.diag_space_length = __cpu_to_be32(0); | |
1736 | ddf->anchor.diag_space_offset = __cpu_to_be32(0xFFFFFFFF); | |
1737 | ddf->anchor.vendor_length = __cpu_to_be32(0); | |
1738 | ddf->anchor.vendor_offset = __cpu_to_be32(0xFFFFFFFF); | |
1739 | ||
1740 | memset(ddf->anchor.pad4, 0xff, 256); | |
1741 | ||
1742 | memcpy(&ddf->primary, &ddf->anchor, 512); | |
1743 | memcpy(&ddf->secondary, &ddf->anchor, 512); | |
1744 | ||
1745 | ddf->primary.openflag = 1; /* I guess.. */ | |
1746 | ddf->primary.type = DDF_HEADER_PRIMARY; | |
1747 | ||
1748 | ddf->secondary.openflag = 1; /* I guess.. */ | |
1749 | ddf->secondary.type = DDF_HEADER_SECONDARY; | |
1750 | ||
1751 | ddf->active = &ddf->primary; | |
1752 | ||
1753 | ddf->controller.magic = DDF_CONTROLLER_MAGIC; | |
1754 | ||
1755 | /* 24 more bytes of fiction required. | |
1756 | * first 8 are a 'vendor-id' - "Linux-MD" | |
1757 | * Remaining 16 are serial number.... maybe a hostname would do? | |
1758 | */ | |
1759 | memcpy(ddf->controller.guid, T10, sizeof(T10)); | |
1ba6bff9 DW |
1760 | gethostname(hostname, sizeof(hostname)); |
1761 | hostname[sizeof(hostname) - 1] = 0; | |
a322f70c DW |
1762 | hostlen = strlen(hostname); |
1763 | memcpy(ddf->controller.guid + 24 - hostlen, hostname, hostlen); | |
1764 | for (i = strlen(T10) ; i+hostlen < 24; i++) | |
1765 | ddf->controller.guid[i] = ' '; | |
1766 | ||
1767 | ddf->controller.type.vendor_id = __cpu_to_be16(0xDEAD); | |
1768 | ddf->controller.type.device_id = __cpu_to_be16(0xBEEF); | |
1769 | ddf->controller.type.sub_vendor_id = 0; | |
1770 | ddf->controller.type.sub_device_id = 0; | |
1771 | memcpy(ddf->controller.product_id, "What Is My PID??", 16); | |
1772 | memset(ddf->controller.pad, 0xff, 8); | |
1773 | memset(ddf->controller.vendor_data, 0xff, 448); | |
a9e1c11d N |
1774 | if (homehost && strlen(homehost) < 440) |
1775 | strcpy((char*)ddf->controller.vendor_data, homehost); | |
a322f70c | 1776 | |
3d2c4fc7 | 1777 | if (posix_memalign((void**)&pd, 512, pdsize) != 0) { |
e7b84f9d | 1778 | pr_err("%s could not allocate pd\n", __func__); |
3d2c4fc7 DW |
1779 | return 0; |
1780 | } | |
6416d527 | 1781 | ddf->phys = pd; |
a322f70c DW |
1782 | ddf->pdsize = pdsize; |
1783 | ||
1784 | memset(pd, 0xff, pdsize); | |
1785 | memset(pd, 0, sizeof(*pd)); | |
076515ba | 1786 | pd->magic = DDF_PHYS_RECORDS_MAGIC; |
a322f70c DW |
1787 | pd->used_pdes = __cpu_to_be16(0); |
1788 | pd->max_pdes = __cpu_to_be16(max_phys_disks); | |
1789 | memset(pd->pad, 0xff, 52); | |
1790 | ||
3d2c4fc7 | 1791 | if (posix_memalign((void**)&vd, 512, vdsize) != 0) { |
e7b84f9d | 1792 | pr_err("%s could not allocate vd\n", __func__); |
3d2c4fc7 DW |
1793 | return 0; |
1794 | } | |
6416d527 | 1795 | ddf->virt = vd; |
a322f70c DW |
1796 | ddf->vdsize = vdsize; |
1797 | memset(vd, 0, vdsize); | |
1798 | vd->magic = DDF_VIRT_RECORDS_MAGIC; | |
1799 | vd->populated_vdes = __cpu_to_be16(0); | |
1800 | vd->max_vdes = __cpu_to_be16(max_virt_disks); | |
1801 | memset(vd->pad, 0xff, 52); | |
1802 | ||
5f8097be NB |
1803 | for (i=0; i<max_virt_disks; i++) |
1804 | memset(&vd->entries[i], 0xff, sizeof(struct virtual_entry)); | |
1805 | ||
a322f70c | 1806 | st->sb = ddf; |
18a2f463 | 1807 | ddf->updates_pending = 1; |
a322f70c DW |
1808 | return 1; |
1809 | } | |
1810 | ||
5f8097be NB |
1811 | static int chunk_to_shift(int chunksize) |
1812 | { | |
1813 | return ffs(chunksize/512)-1; | |
1814 | } | |
1815 | ||
1816 | static int level_to_prl(int level) | |
1817 | { | |
1818 | switch (level) { | |
1819 | case LEVEL_LINEAR: return DDF_CONCAT; | |
1820 | case 0: return DDF_RAID0; | |
1821 | case 1: return DDF_RAID1; | |
1822 | case 4: return DDF_RAID4; | |
1823 | case 5: return DDF_RAID5; | |
1824 | case 6: return DDF_RAID6; | |
1825 | default: return -1; | |
1826 | } | |
1827 | } | |
613b0d17 | 1828 | |
5f8097be NB |
1829 | static int layout_to_rlq(int level, int layout, int raiddisks) |
1830 | { | |
1831 | switch(level) { | |
1832 | case 0: | |
1833 | return DDF_RAID0_SIMPLE; | |
1834 | case 1: | |
1835 | switch(raiddisks) { | |
1836 | case 2: return DDF_RAID1_SIMPLE; | |
1837 | case 3: return DDF_RAID1_MULTI; | |
1838 | default: return -1; | |
1839 | } | |
1840 | case 4: | |
1841 | switch(layout) { | |
1842 | case 0: return DDF_RAID4_N; | |
1843 | } | |
1844 | break; | |
1845 | case 5: | |
5f8097be NB |
1846 | switch(layout) { |
1847 | case ALGORITHM_LEFT_ASYMMETRIC: | |
1848 | return DDF_RAID5_N_RESTART; | |
1849 | case ALGORITHM_RIGHT_ASYMMETRIC: | |
b640a252 | 1850 | return DDF_RAID5_0_RESTART; |
5f8097be NB |
1851 | case ALGORITHM_LEFT_SYMMETRIC: |
1852 | return DDF_RAID5_N_CONTINUE; | |
1853 | case ALGORITHM_RIGHT_SYMMETRIC: | |
1854 | return -1; /* not mentioned in standard */ | |
1855 | } | |
b640a252 N |
1856 | case 6: |
1857 | switch(layout) { | |
1858 | case ALGORITHM_ROTATING_N_RESTART: | |
1859 | return DDF_RAID5_N_RESTART; | |
1860 | case ALGORITHM_ROTATING_ZERO_RESTART: | |
1861 | return DDF_RAID6_0_RESTART; | |
1862 | case ALGORITHM_ROTATING_N_CONTINUE: | |
1863 | return DDF_RAID5_N_CONTINUE; | |
1864 | } | |
5f8097be NB |
1865 | } |
1866 | return -1; | |
1867 | } | |
1868 | ||
598f0d58 NB |
1869 | static int rlq_to_layout(int rlq, int prl, int raiddisks) |
1870 | { | |
1871 | switch(prl) { | |
1872 | case DDF_RAID0: | |
1873 | return 0; /* hopefully rlq == DDF_RAID0_SIMPLE */ | |
1874 | case DDF_RAID1: | |
1875 | return 0; /* hopefully rlq == SIMPLE or MULTI depending | |
1876 | on raiddisks*/ | |
1877 | case DDF_RAID4: | |
1878 | switch(rlq) { | |
1879 | case DDF_RAID4_N: | |
1880 | return 0; | |
1881 | default: | |
1882 | /* not supported */ | |
1883 | return -1; /* FIXME this isn't checked */ | |
1884 | } | |
1885 | case DDF_RAID5: | |
598f0d58 NB |
1886 | switch(rlq) { |
1887 | case DDF_RAID5_N_RESTART: | |
1888 | return ALGORITHM_LEFT_ASYMMETRIC; | |
1889 | case DDF_RAID5_0_RESTART: | |
1890 | return ALGORITHM_RIGHT_ASYMMETRIC; | |
1891 | case DDF_RAID5_N_CONTINUE: | |
1892 | return ALGORITHM_LEFT_SYMMETRIC; | |
1893 | default: | |
1894 | return -1; | |
1895 | } | |
59e36268 NB |
1896 | case DDF_RAID6: |
1897 | switch(rlq) { | |
1898 | case DDF_RAID5_N_RESTART: | |
b640a252 | 1899 | return ALGORITHM_ROTATING_N_RESTART; |
59e36268 | 1900 | case DDF_RAID6_0_RESTART: |
b640a252 | 1901 | return ALGORITHM_ROTATING_ZERO_RESTART; |
59e36268 | 1902 | case DDF_RAID5_N_CONTINUE: |
b640a252 | 1903 | return ALGORITHM_ROTATING_N_CONTINUE; |
59e36268 NB |
1904 | default: |
1905 | return -1; | |
1906 | } | |
598f0d58 NB |
1907 | } |
1908 | return -1; | |
1909 | } | |
1910 | ||
0e600426 | 1911 | #ifndef MDASSEMBLE |
59e36268 NB |
1912 | struct extent { |
1913 | unsigned long long start, size; | |
1914 | }; | |
78e44928 | 1915 | static int cmp_extent(const void *av, const void *bv) |
59e36268 NB |
1916 | { |
1917 | const struct extent *a = av; | |
1918 | const struct extent *b = bv; | |
1919 | if (a->start < b->start) | |
1920 | return -1; | |
1921 | if (a->start > b->start) | |
1922 | return 1; | |
1923 | return 0; | |
1924 | } | |
1925 | ||
78e44928 | 1926 | static struct extent *get_extents(struct ddf_super *ddf, struct dl *dl) |
59e36268 NB |
1927 | { |
1928 | /* find a list of used extents on the give physical device | |
1929 | * (dnum) of the given ddf. | |
1930 | * Return a malloced array of 'struct extent' | |
1931 | ||
613b0d17 | 1932 | * FIXME ignore DDF_Legacy devices? |
59e36268 NB |
1933 | |
1934 | */ | |
1935 | struct extent *rv; | |
1936 | int n = 0; | |
f21e18ca | 1937 | unsigned int i, j; |
59e36268 | 1938 | |
503975b9 | 1939 | rv = xmalloc(sizeof(struct extent) * (ddf->max_part + 2)); |
59e36268 NB |
1940 | |
1941 | for (i = 0; i < ddf->max_part; i++) { | |
1942 | struct vcl *v = dl->vlist[i]; | |
1943 | if (v == NULL) | |
1944 | continue; | |
f21e18ca | 1945 | for (j = 0; j < v->conf.prim_elmnt_count; j++) |
59e36268 NB |
1946 | if (v->conf.phys_refnum[j] == dl->disk.refnum) { |
1947 | /* This device plays role 'j' in 'v'. */ | |
1948 | rv[n].start = __be64_to_cpu(v->lba_offset[j]); | |
1949 | rv[n].size = __be64_to_cpu(v->conf.blocks); | |
1950 | n++; | |
1951 | break; | |
1952 | } | |
1953 | } | |
1954 | qsort(rv, n, sizeof(*rv), cmp_extent); | |
1955 | ||
1956 | rv[n].start = __be64_to_cpu(ddf->phys->entries[dl->pdnum].config_size); | |
1957 | rv[n].size = 0; | |
1958 | return rv; | |
1959 | } | |
0e600426 | 1960 | #endif |
59e36268 | 1961 | |
5f8097be NB |
1962 | static int init_super_ddf_bvd(struct supertype *st, |
1963 | mdu_array_info_t *info, | |
1964 | unsigned long long size, | |
1965 | char *name, char *homehost, | |
83cd1e97 | 1966 | int *uuid, unsigned long long data_offset) |
5f8097be NB |
1967 | { |
1968 | /* We are creating a BVD inside a pre-existing container. | |
1969 | * so st->sb is already set. | |
1970 | * We need to create a new vd_config and a new virtual_entry | |
1971 | */ | |
1972 | struct ddf_super *ddf = st->sb; | |
f21e18ca | 1973 | unsigned int venum; |
5f8097be NB |
1974 | struct virtual_entry *ve; |
1975 | struct vcl *vcl; | |
1976 | struct vd_config *vc; | |
5f8097be NB |
1977 | |
1978 | if (__be16_to_cpu(ddf->virt->populated_vdes) | |
1979 | >= __be16_to_cpu(ddf->virt->max_vdes)) { | |
e7b84f9d N |
1980 | pr_err("This ddf already has the " |
1981 | "maximum of %d virtual devices\n", | |
1982 | __be16_to_cpu(ddf->virt->max_vdes)); | |
5f8097be NB |
1983 | return 0; |
1984 | } | |
1985 | ||
97c9c100 N |
1986 | if (name) |
1987 | for (venum = 0; venum < __be16_to_cpu(ddf->virt->max_vdes); venum++) | |
1988 | if (!all_ff(ddf->virt->entries[venum].guid)) { | |
1989 | char *n = ddf->virt->entries[venum].name; | |
1990 | ||
1991 | if (strncmp(name, n, 16) == 0) { | |
e7b84f9d N |
1992 | pr_err("This ddf already" |
1993 | " has an array called %s\n", | |
1994 | name); | |
97c9c100 N |
1995 | return 0; |
1996 | } | |
1997 | } | |
1998 | ||
5f8097be NB |
1999 | for (venum = 0; venum < __be16_to_cpu(ddf->virt->max_vdes); venum++) |
2000 | if (all_ff(ddf->virt->entries[venum].guid)) | |
2001 | break; | |
2002 | if (venum == __be16_to_cpu(ddf->virt->max_vdes)) { | |
e7b84f9d | 2003 | pr_err("Cannot find spare slot for " |
613b0d17 | 2004 | "virtual disk - DDF is corrupt\n"); |
5f8097be NB |
2005 | return 0; |
2006 | } | |
2007 | ve = &ddf->virt->entries[venum]; | |
2008 | ||
2009 | /* A Virtual Disk GUID contains the T10 Vendor ID, controller type, | |
2010 | * timestamp, random number | |
2011 | */ | |
2012 | make_header_guid(ve->guid); | |
2013 | ve->unit = __cpu_to_be16(info->md_minor); | |
2014 | ve->pad0 = 0xFFFF; | |
2015 | ve->guid_crc = crc32(0, (unsigned char*)ddf->anchor.guid, DDF_GUID_LEN); | |
2016 | ve->type = 0; | |
7a7cc504 NB |
2017 | ve->state = DDF_state_degraded; /* Will be modified as devices are added */ |
2018 | if (info->state & 1) /* clean */ | |
2019 | ve->init_state = DDF_init_full; | |
2020 | else | |
2021 | ve->init_state = DDF_init_not; | |
2022 | ||
5f8097be NB |
2023 | memset(ve->pad1, 0xff, 14); |
2024 | memset(ve->name, ' ', 16); | |
2025 | if (name) | |
2026 | strncpy(ve->name, name, 16); | |
2027 | ddf->virt->populated_vdes = | |
2028 | __cpu_to_be16(__be16_to_cpu(ddf->virt->populated_vdes)+1); | |
2029 | ||
2030 | /* Now create a new vd_config */ | |
3d2c4fc7 DW |
2031 | if (posix_memalign((void**)&vcl, 512, |
2032 | (offsetof(struct vcl, conf) + ddf->conf_rec_len * 512)) != 0) { | |
e7b84f9d | 2033 | pr_err("%s could not allocate vd_config\n", __func__); |
3d2c4fc7 DW |
2034 | return 0; |
2035 | } | |
8c3b8c2c | 2036 | vcl->lba_offset = (__u64*) &vcl->conf.phys_refnum[ddf->mppe]; |
59e36268 NB |
2037 | vcl->vcnum = venum; |
2038 | vcl->block_sizes = NULL; /* FIXME not for CONCAT */ | |
8ec5d685 | 2039 | vcl->other_bvds = NULL; |
5f8097be NB |
2040 | |
2041 | vc = &vcl->conf; | |
2042 | ||
2043 | vc->magic = DDF_VD_CONF_MAGIC; | |
2044 | memcpy(vc->guid, ve->guid, DDF_GUID_LEN); | |
2045 | vc->timestamp = __cpu_to_be32(time(0)-DECADE); | |
2046 | vc->seqnum = __cpu_to_be32(1); | |
2047 | memset(vc->pad0, 0xff, 24); | |
2048 | vc->prim_elmnt_count = __cpu_to_be16(info->raid_disks); | |
2049 | vc->chunk_shift = chunk_to_shift(info->chunk_size); | |
2050 | vc->prl = level_to_prl(info->level); | |
2051 | vc->rlq = layout_to_rlq(info->level, info->layout, info->raid_disks); | |
2052 | vc->sec_elmnt_count = 1; | |
2053 | vc->sec_elmnt_seq = 0; | |
2054 | vc->srl = 0; | |
2055 | vc->blocks = __cpu_to_be64(info->size * 2); | |
2056 | vc->array_blocks = __cpu_to_be64( | |
2057 | calc_array_size(info->level, info->raid_disks, info->layout, | |
2058 | info->chunk_size, info->size*2)); | |
2059 | memset(vc->pad1, 0xff, 8); | |
2060 | vc->spare_refs[0] = 0xffffffff; | |
2061 | vc->spare_refs[1] = 0xffffffff; | |
2062 | vc->spare_refs[2] = 0xffffffff; | |
2063 | vc->spare_refs[3] = 0xffffffff; | |
2064 | vc->spare_refs[4] = 0xffffffff; | |
2065 | vc->spare_refs[5] = 0xffffffff; | |
2066 | vc->spare_refs[6] = 0xffffffff; | |
2067 | vc->spare_refs[7] = 0xffffffff; | |
2068 | memset(vc->cache_pol, 0, 8); | |
2069 | vc->bg_rate = 0x80; | |
2070 | memset(vc->pad2, 0xff, 3); | |
2071 | memset(vc->pad3, 0xff, 52); | |
2072 | memset(vc->pad4, 0xff, 192); | |
2073 | memset(vc->v0, 0xff, 32); | |
2074 | memset(vc->v1, 0xff, 32); | |
2075 | memset(vc->v2, 0xff, 16); | |
2076 | memset(vc->v3, 0xff, 16); | |
2077 | memset(vc->vendor, 0xff, 32); | |
598f0d58 | 2078 | |
8c3b8c2c | 2079 | memset(vc->phys_refnum, 0xff, 4*ddf->mppe); |
e5a2a3cf | 2080 | memset(vc->phys_refnum+ddf->mppe, 0x00, 8*ddf->mppe); |
5f8097be NB |
2081 | |
2082 | vcl->next = ddf->conflist; | |
2083 | ddf->conflist = vcl; | |
d2ca6449 | 2084 | ddf->currentconf = vcl; |
18a2f463 | 2085 | ddf->updates_pending = 1; |
5f8097be NB |
2086 | return 1; |
2087 | } | |
2088 | ||
0e600426 | 2089 | #ifndef MDASSEMBLE |
5f8097be NB |
2090 | static void add_to_super_ddf_bvd(struct supertype *st, |
2091 | mdu_disk_info_t *dk, int fd, char *devname) | |
2092 | { | |
2093 | /* fd and devname identify a device with-in the ddf container (st). | |
2094 | * dk identifies a location in the new BVD. | |
2095 | * We need to find suitable free space in that device and update | |
2096 | * the phys_refnum and lba_offset for the newly created vd_config. | |
2097 | * We might also want to update the type in the phys_disk | |
5575e7d9 | 2098 | * section. |
8592f29d N |
2099 | * |
2100 | * Alternately: fd == -1 and we have already chosen which device to | |
2101 | * use and recorded in dlist->raid_disk; | |
5f8097be NB |
2102 | */ |
2103 | struct dl *dl; | |
2104 | struct ddf_super *ddf = st->sb; | |
2105 | struct vd_config *vc; | |
2106 | __u64 *lba_offset; | |
f21e18ca N |
2107 | unsigned int working; |
2108 | unsigned int i; | |
59e36268 NB |
2109 | unsigned long long blocks, pos, esize; |
2110 | struct extent *ex; | |
5f8097be | 2111 | |
8592f29d N |
2112 | if (fd == -1) { |
2113 | for (dl = ddf->dlist; dl ; dl = dl->next) | |
2114 | if (dl->raiddisk == dk->raid_disk) | |
2115 | break; | |
2116 | } else { | |
2117 | for (dl = ddf->dlist; dl ; dl = dl->next) | |
2118 | if (dl->major == dk->major && | |
2119 | dl->minor == dk->minor) | |
2120 | break; | |
2121 | } | |
5f8097be NB |
2122 | if (!dl || ! (dk->state & (1<<MD_DISK_SYNC))) |
2123 | return; | |
2124 | ||
d2ca6449 NB |
2125 | vc = &ddf->currentconf->conf; |
2126 | lba_offset = ddf->currentconf->lba_offset; | |
59e36268 NB |
2127 | |
2128 | ex = get_extents(ddf, dl); | |
2129 | if (!ex) | |
2130 | return; | |
2131 | ||
2132 | i = 0; pos = 0; | |
2133 | blocks = __be64_to_cpu(vc->blocks); | |
d2ca6449 NB |
2134 | if (ddf->currentconf->block_sizes) |
2135 | blocks = ddf->currentconf->block_sizes[dk->raid_disk]; | |
59e36268 NB |
2136 | |
2137 | do { | |
2138 | esize = ex[i].start - pos; | |
2139 | if (esize >= blocks) | |
2140 | break; | |
2141 | pos = ex[i].start + ex[i].size; | |
2142 | i++; | |
2143 | } while (ex[i-1].size); | |
2144 | ||
2145 | free(ex); | |
2146 | if (esize < blocks) | |
2147 | return; | |
2148 | ||
d2ca6449 | 2149 | ddf->currentdev = dk->raid_disk; |
5f8097be | 2150 | vc->phys_refnum[dk->raid_disk] = dl->disk.refnum; |
59e36268 | 2151 | lba_offset[dk->raid_disk] = __cpu_to_be64(pos); |
5f8097be | 2152 | |
f21e18ca | 2153 | for (i = 0; i < ddf->max_part ; i++) |
5575e7d9 NB |
2154 | if (dl->vlist[i] == NULL) |
2155 | break; | |
2156 | if (i == ddf->max_part) | |
2157 | return; | |
d2ca6449 | 2158 | dl->vlist[i] = ddf->currentconf; |
5f8097be | 2159 | |
8592f29d N |
2160 | if (fd >= 0) |
2161 | dl->fd = fd; | |
2162 | if (devname) | |
2163 | dl->devname = devname; | |
7a7cc504 NB |
2164 | |
2165 | /* Check how many working raid_disks, and if we can mark | |
2166 | * array as optimal yet | |
2167 | */ | |
2168 | working = 0; | |
5575e7d9 | 2169 | |
f21e18ca | 2170 | for (i = 0; i < __be16_to_cpu(vc->prim_elmnt_count); i++) |
7a7cc504 NB |
2171 | if (vc->phys_refnum[i] != 0xffffffff) |
2172 | working++; | |
59e36268 | 2173 | |
5575e7d9 | 2174 | /* Find which virtual_entry */ |
d2ca6449 | 2175 | i = ddf->currentconf->vcnum; |
7a7cc504 | 2176 | if (working == __be16_to_cpu(vc->prim_elmnt_count)) |
5575e7d9 NB |
2177 | ddf->virt->entries[i].state = |
2178 | (ddf->virt->entries[i].state & ~DDF_state_mask) | |
7a7cc504 NB |
2179 | | DDF_state_optimal; |
2180 | ||
2181 | if (vc->prl == DDF_RAID6 && | |
2182 | working+1 == __be16_to_cpu(vc->prim_elmnt_count)) | |
5575e7d9 NB |
2183 | ddf->virt->entries[i].state = |
2184 | (ddf->virt->entries[i].state & ~DDF_state_mask) | |
7a7cc504 | 2185 | | DDF_state_part_optimal; |
5575e7d9 NB |
2186 | |
2187 | ddf->phys->entries[dl->pdnum].type &= ~__cpu_to_be16(DDF_Global_Spare); | |
2188 | ddf->phys->entries[dl->pdnum].type |= __cpu_to_be16(DDF_Active_in_VD); | |
18a2f463 | 2189 | ddf->updates_pending = 1; |
5f8097be NB |
2190 | } |
2191 | ||
a322f70c DW |
2192 | /* add a device to a container, either while creating it or while |
2193 | * expanding a pre-existing container | |
2194 | */ | |
f20c3968 | 2195 | static int add_to_super_ddf(struct supertype *st, |
72ca9bcf N |
2196 | mdu_disk_info_t *dk, int fd, char *devname, |
2197 | unsigned long long data_offset) | |
a322f70c DW |
2198 | { |
2199 | struct ddf_super *ddf = st->sb; | |
2200 | struct dl *dd; | |
2201 | time_t now; | |
2202 | struct tm *tm; | |
2203 | unsigned long long size; | |
2204 | struct phys_disk_entry *pde; | |
f21e18ca | 2205 | unsigned int n, i; |
a322f70c | 2206 | struct stat stb; |
90fa1a29 | 2207 | __u32 *tptr; |
a322f70c | 2208 | |
78e44928 NB |
2209 | if (ddf->currentconf) { |
2210 | add_to_super_ddf_bvd(st, dk, fd, devname); | |
f20c3968 | 2211 | return 0; |
78e44928 NB |
2212 | } |
2213 | ||
a322f70c DW |
2214 | /* This is device numbered dk->number. We need to create |
2215 | * a phys_disk entry and a more detailed disk_data entry. | |
2216 | */ | |
2217 | fstat(fd, &stb); | |
3d2c4fc7 DW |
2218 | if (posix_memalign((void**)&dd, 512, |
2219 | sizeof(*dd) + sizeof(dd->vlist[0]) * ddf->max_part) != 0) { | |
e7b84f9d N |
2220 | pr_err("%s could allocate buffer for new disk, aborting\n", |
2221 | __func__); | |
f20c3968 | 2222 | return 1; |
3d2c4fc7 | 2223 | } |
a322f70c DW |
2224 | dd->major = major(stb.st_rdev); |
2225 | dd->minor = minor(stb.st_rdev); | |
2226 | dd->devname = devname; | |
a322f70c | 2227 | dd->fd = fd; |
b2280677 | 2228 | dd->spare = NULL; |
a322f70c DW |
2229 | |
2230 | dd->disk.magic = DDF_PHYS_DATA_MAGIC; | |
2231 | now = time(0); | |
2232 | tm = localtime(&now); | |
2233 | sprintf(dd->disk.guid, "%8s%04d%02d%02d", | |
2234 | T10, tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday); | |
90fa1a29 JS |
2235 | tptr = (__u32 *)(dd->disk.guid + 16); |
2236 | *tptr++ = random32(); | |
2237 | *tptr = random32(); | |
a322f70c | 2238 | |
59e36268 NB |
2239 | do { |
2240 | /* Cannot be bothered finding a CRC of some irrelevant details*/ | |
bfb7ea78 | 2241 | dd->disk.refnum = random32(); |
f21e18ca N |
2242 | for (i = __be16_to_cpu(ddf->active->max_pd_entries); |
2243 | i > 0; i--) | |
2244 | if (ddf->phys->entries[i-1].refnum == dd->disk.refnum) | |
59e36268 | 2245 | break; |
f21e18ca | 2246 | } while (i > 0); |
59e36268 | 2247 | |
a322f70c DW |
2248 | dd->disk.forced_ref = 1; |
2249 | dd->disk.forced_guid = 1; | |
2250 | memset(dd->disk.vendor, ' ', 32); | |
2251 | memcpy(dd->disk.vendor, "Linux", 5); | |
2252 | memset(dd->disk.pad, 0xff, 442); | |
b2280677 | 2253 | for (i = 0; i < ddf->max_part ; i++) |
a322f70c DW |
2254 | dd->vlist[i] = NULL; |
2255 | ||
2256 | n = __be16_to_cpu(ddf->phys->used_pdes); | |
2257 | pde = &ddf->phys->entries[n]; | |
5575e7d9 NB |
2258 | dd->pdnum = n; |
2259 | ||
2cc2983d N |
2260 | if (st->update_tail) { |
2261 | int len = (sizeof(struct phys_disk) + | |
2262 | sizeof(struct phys_disk_entry)); | |
2263 | struct phys_disk *pd; | |
2264 | ||
503975b9 | 2265 | pd = xmalloc(len); |
2cc2983d N |
2266 | pd->magic = DDF_PHYS_RECORDS_MAGIC; |
2267 | pd->used_pdes = __cpu_to_be16(n); | |
2268 | pde = &pd->entries[0]; | |
2269 | dd->mdupdate = pd; | |
2270 | } else { | |
2271 | n++; | |
2272 | ddf->phys->used_pdes = __cpu_to_be16(n); | |
2273 | } | |
a322f70c DW |
2274 | |
2275 | memcpy(pde->guid, dd->disk.guid, DDF_GUID_LEN); | |
2276 | pde->refnum = dd->disk.refnum; | |
5575e7d9 | 2277 | pde->type = __cpu_to_be16(DDF_Forced_PD_GUID | DDF_Global_Spare); |
a322f70c DW |
2278 | pde->state = __cpu_to_be16(DDF_Online); |
2279 | get_dev_size(fd, NULL, &size); | |
2280 | /* We are required to reserve 32Meg, and record the size in sectors */ | |
2281 | pde->config_size = __cpu_to_be64( (size - 32*1024*1024) / 512); | |
2282 | sprintf(pde->path, "%17.17s","Information: nil") ; | |
2283 | memset(pde->pad, 0xff, 6); | |
2284 | ||
d2ca6449 | 2285 | dd->size = size >> 9; |
2cc2983d N |
2286 | if (st->update_tail) { |
2287 | dd->next = ddf->add_list; | |
2288 | ddf->add_list = dd; | |
2289 | } else { | |
2290 | dd->next = ddf->dlist; | |
2291 | ddf->dlist = dd; | |
2292 | ddf->updates_pending = 1; | |
2293 | } | |
f20c3968 DW |
2294 | |
2295 | return 0; | |
a322f70c DW |
2296 | } |
2297 | ||
4dd968cc N |
2298 | static int remove_from_super_ddf(struct supertype *st, mdu_disk_info_t *dk) |
2299 | { | |
2300 | struct ddf_super *ddf = st->sb; | |
2301 | struct dl *dl; | |
2302 | ||
2303 | /* mdmon has noticed that this disk (dk->major/dk->minor) has | |
2304 | * disappeared from the container. | |
2305 | * We need to arrange that it disappears from the metadata and | |
2306 | * internal data structures too. | |
2307 | * Most of the work is done by ddf_process_update which edits | |
2308 | * the metadata and closes the file handle and attaches the memory | |
2309 | * where free_updates will free it. | |
2310 | */ | |
2311 | for (dl = ddf->dlist; dl ; dl = dl->next) | |
2312 | if (dl->major == dk->major && | |
2313 | dl->minor == dk->minor) | |
2314 | break; | |
2315 | if (!dl) | |
2316 | return -1; | |
2317 | ||
2318 | if (st->update_tail) { | |
2319 | int len = (sizeof(struct phys_disk) + | |
2320 | sizeof(struct phys_disk_entry)); | |
2321 | struct phys_disk *pd; | |
2322 | ||
503975b9 | 2323 | pd = xmalloc(len); |
4dd968cc N |
2324 | pd->magic = DDF_PHYS_RECORDS_MAGIC; |
2325 | pd->used_pdes = __cpu_to_be16(dl->pdnum); | |
2326 | pd->entries[0].state = __cpu_to_be16(DDF_Missing); | |
2327 | append_metadata_update(st, pd, len); | |
2328 | } | |
2329 | return 0; | |
2330 | } | |
2331 | ||
a322f70c DW |
2332 | /* |
2333 | * This is the write_init_super method for a ddf container. It is | |
2334 | * called when creating a container or adding another device to a | |
2335 | * container. | |
2336 | */ | |
42d5dfd9 | 2337 | #define NULL_CONF_SZ 4096 |
18a2f463 | 2338 | |
7f798aca | 2339 | static int __write_ddf_structure(struct dl *d, struct ddf_super *ddf, __u8 type, |
2340 | char *null_aligned) | |
a322f70c | 2341 | { |
7f798aca | 2342 | unsigned long long sector; |
2343 | struct ddf_header *header; | |
2344 | int fd, i, n_config, conf_size; | |
2345 | ||
2346 | fd = d->fd; | |
2347 | ||
2348 | switch (type) { | |
2349 | case DDF_HEADER_PRIMARY: | |
2350 | header = &ddf->primary; | |
2351 | sector = __be64_to_cpu(header->primary_lba); | |
2352 | break; | |
2353 | case DDF_HEADER_SECONDARY: | |
2354 | header = &ddf->secondary; | |
2355 | sector = __be64_to_cpu(header->secondary_lba); | |
2356 | break; | |
2357 | default: | |
2358 | return 0; | |
2359 | } | |
2360 | ||
2361 | header->type = type; | |
2362 | header->openflag = 0; | |
2363 | header->crc = calc_crc(header, 512); | |
2364 | ||
2365 | lseek64(fd, sector<<9, 0); | |
2366 | if (write(fd, header, 512) < 0) | |
2367 | return 0; | |
2368 | ||
2369 | ddf->controller.crc = calc_crc(&ddf->controller, 512); | |
2370 | if (write(fd, &ddf->controller, 512) < 0) | |
2371 | return 0; | |
a322f70c | 2372 | |
7f798aca | 2373 | ddf->phys->crc = calc_crc(ddf->phys, ddf->pdsize); |
2374 | if (write(fd, ddf->phys, ddf->pdsize) < 0) | |
2375 | return 0; | |
2376 | ddf->virt->crc = calc_crc(ddf->virt, ddf->vdsize); | |
2377 | if (write(fd, ddf->virt, ddf->vdsize) < 0) | |
2378 | return 0; | |
2379 | ||
2380 | /* Now write lots of config records. */ | |
2381 | n_config = ddf->max_part; | |
2382 | conf_size = ddf->conf_rec_len * 512; | |
2383 | for (i = 0 ; i <= n_config ; i++) { | |
2384 | struct vcl *c = d->vlist[i]; | |
2385 | if (i == n_config) | |
2386 | c = (struct vcl *)d->spare; | |
2387 | ||
2388 | if (c) { | |
0175cbf6 | 2389 | c->conf.seqnum = ddf->primary.seq; |
7f798aca | 2390 | c->conf.crc = calc_crc(&c->conf, conf_size); |
2391 | if (write(fd, &c->conf, conf_size) < 0) | |
2392 | break; | |
2393 | } else { | |
2394 | unsigned int togo = conf_size; | |
2395 | while (togo > NULL_CONF_SZ) { | |
2396 | if (write(fd, null_aligned, NULL_CONF_SZ) < 0) | |
2397 | break; | |
2398 | togo -= NULL_CONF_SZ; | |
2399 | } | |
2400 | if (write(fd, null_aligned, togo) < 0) | |
2401 | break; | |
2402 | } | |
2403 | } | |
2404 | if (i <= n_config) | |
2405 | return 0; | |
2406 | ||
2407 | d->disk.crc = calc_crc(&d->disk, 512); | |
2408 | if (write(fd, &d->disk, 512) < 0) | |
2409 | return 0; | |
2410 | ||
2411 | return 1; | |
2412 | } | |
2413 | ||
2414 | static int __write_init_super_ddf(struct supertype *st) | |
2415 | { | |
a322f70c | 2416 | struct ddf_super *ddf = st->sb; |
a322f70c | 2417 | struct dl *d; |
175593bf DW |
2418 | int attempts = 0; |
2419 | int successes = 0; | |
7f798aca | 2420 | unsigned long long size; |
42d5dfd9 | 2421 | char *null_aligned; |
0175cbf6 | 2422 | __u32 seq; |
42d5dfd9 JS |
2423 | |
2424 | if (posix_memalign((void**)&null_aligned, 4096, NULL_CONF_SZ) != 0) { | |
2425 | return -ENOMEM; | |
2426 | } | |
2427 | memset(null_aligned, 0xff, NULL_CONF_SZ); | |
a322f70c | 2428 | |
0175cbf6 | 2429 | if (ddf->primary.seq != 0xffffffff) |
2430 | seq = __cpu_to_be32(__be32_to_cpu(ddf->primary.seq)+1); | |
2431 | else if (ddf->secondary.seq != 0xffffffff) | |
2432 | seq = __cpu_to_be32(__be32_to_cpu(ddf->secondary.seq)+1); | |
2433 | else | |
2434 | seq = __cpu_to_be32(1); | |
2435 | ||
175593bf DW |
2436 | /* try to write updated metadata, |
2437 | * if we catch a failure move on to the next disk | |
2438 | */ | |
a322f70c DW |
2439 | for (d = ddf->dlist; d; d=d->next) { |
2440 | int fd = d->fd; | |
2441 | ||
2442 | if (fd < 0) | |
2443 | continue; | |
2444 | ||
175593bf | 2445 | attempts++; |
a322f70c DW |
2446 | /* We need to fill in the primary, (secondary) and workspace |
2447 | * lba's in the headers, set their checksums, | |
2448 | * Also checksum phys, virt.... | |
2449 | * | |
2450 | * Then write everything out, finally the anchor is written. | |
2451 | */ | |
2452 | get_dev_size(fd, NULL, &size); | |
2453 | size /= 512; | |
097bcf00 | 2454 | if (d->workspace_lba != 0) |
2455 | ddf->anchor.workspace_lba = d->workspace_lba; | |
2456 | else | |
2457 | ddf->anchor.workspace_lba = | |
2458 | __cpu_to_be64(size - 32*1024*2); | |
2459 | if (d->primary_lba != 0) | |
2460 | ddf->anchor.primary_lba = d->primary_lba; | |
2461 | else | |
2462 | ddf->anchor.primary_lba = | |
2463 | __cpu_to_be64(size - 16*1024*2); | |
2464 | if (d->secondary_lba != 0) | |
2465 | ddf->anchor.secondary_lba = d->secondary_lba; | |
2466 | else | |
2467 | ddf->anchor.secondary_lba = | |
2468 | __cpu_to_be64(size - 32*1024*2); | |
0175cbf6 | 2469 | ddf->anchor.seq = seq; |
a322f70c DW |
2470 | memcpy(&ddf->primary, &ddf->anchor, 512); |
2471 | memcpy(&ddf->secondary, &ddf->anchor, 512); | |
2472 | ||
2473 | ddf->anchor.openflag = 0xFF; /* 'open' means nothing */ | |
2474 | ddf->anchor.seq = 0xFFFFFFFF; /* no sequencing in anchor */ | |
2475 | ddf->anchor.crc = calc_crc(&ddf->anchor, 512); | |
2476 | ||
7f798aca | 2477 | if (!__write_ddf_structure(d, ddf, DDF_HEADER_PRIMARY, |
2478 | null_aligned)) | |
175593bf | 2479 | continue; |
a322f70c | 2480 | |
7f798aca | 2481 | if (!__write_ddf_structure(d, ddf, DDF_HEADER_SECONDARY, |
2482 | null_aligned)) | |
175593bf | 2483 | continue; |
a322f70c | 2484 | |
a322f70c | 2485 | lseek64(fd, (size-1)*512, SEEK_SET); |
175593bf DW |
2486 | if (write(fd, &ddf->anchor, 512) < 0) |
2487 | continue; | |
2488 | successes++; | |
2489 | } | |
42d5dfd9 | 2490 | free(null_aligned); |
175593bf | 2491 | |
175593bf | 2492 | return attempts != successes; |
a322f70c | 2493 | } |
7a7cc504 NB |
2494 | |
2495 | static int write_init_super_ddf(struct supertype *st) | |
2496 | { | |
9b1fb677 DW |
2497 | struct ddf_super *ddf = st->sb; |
2498 | struct vcl *currentconf = ddf->currentconf; | |
2499 | ||
2500 | /* we are done with currentconf reset it to point st at the container */ | |
2501 | ddf->currentconf = NULL; | |
edd8d13c NB |
2502 | |
2503 | if (st->update_tail) { | |
2504 | /* queue the virtual_disk and vd_config as metadata updates */ | |
2505 | struct virtual_disk *vd; | |
2506 | struct vd_config *vc; | |
edd8d13c NB |
2507 | int len; |
2508 | ||
9b1fb677 | 2509 | if (!currentconf) { |
2cc2983d N |
2510 | int len = (sizeof(struct phys_disk) + |
2511 | sizeof(struct phys_disk_entry)); | |
2512 | ||
2513 | /* adding a disk to the container. */ | |
2514 | if (!ddf->add_list) | |
2515 | return 0; | |
2516 | ||
2517 | append_metadata_update(st, ddf->add_list->mdupdate, len); | |
2518 | ddf->add_list->mdupdate = NULL; | |
2519 | return 0; | |
2520 | } | |
2521 | ||
2522 | /* Newly created VD */ | |
2523 | ||
edd8d13c NB |
2524 | /* First the virtual disk. We have a slightly fake header */ |
2525 | len = sizeof(struct virtual_disk) + sizeof(struct virtual_entry); | |
503975b9 | 2526 | vd = xmalloc(len); |
edd8d13c | 2527 | *vd = *ddf->virt; |
9b1fb677 DW |
2528 | vd->entries[0] = ddf->virt->entries[currentconf->vcnum]; |
2529 | vd->populated_vdes = __cpu_to_be16(currentconf->vcnum); | |
edd8d13c NB |
2530 | append_metadata_update(st, vd, len); |
2531 | ||
2532 | /* Then the vd_config */ | |
2533 | len = ddf->conf_rec_len * 512; | |
503975b9 | 2534 | vc = xmalloc(len); |
9b1fb677 | 2535 | memcpy(vc, ¤tconf->conf, len); |
edd8d13c NB |
2536 | append_metadata_update(st, vc, len); |
2537 | ||
2538 | /* FIXME I need to close the fds! */ | |
2539 | return 0; | |
613b0d17 | 2540 | } else { |
d682f344 N |
2541 | struct dl *d; |
2542 | for (d = ddf->dlist; d; d=d->next) | |
ba728be7 | 2543 | while (Kill(d->devname, NULL, 0, -1, 1) == 0); |
1cc7f4fe | 2544 | return __write_init_super_ddf(st); |
d682f344 | 2545 | } |
7a7cc504 NB |
2546 | } |
2547 | ||
a322f70c DW |
2548 | #endif |
2549 | ||
387fcd59 N |
2550 | static __u64 avail_size_ddf(struct supertype *st, __u64 devsize, |
2551 | unsigned long long data_offset) | |
a322f70c DW |
2552 | { |
2553 | /* We must reserve the last 32Meg */ | |
2554 | if (devsize <= 32*1024*2) | |
2555 | return 0; | |
2556 | return devsize - 32*1024*2; | |
2557 | } | |
2558 | ||
2559 | #ifndef MDASSEMBLE | |
8592f29d N |
2560 | |
2561 | static int reserve_space(struct supertype *st, int raiddisks, | |
2562 | unsigned long long size, int chunk, | |
2563 | unsigned long long *freesize) | |
2564 | { | |
2565 | /* Find 'raiddisks' spare extents at least 'size' big (but | |
2566 | * only caring about multiples of 'chunk') and remember | |
2567 | * them. | |
2568 | * If the cannot be found, fail. | |
2569 | */ | |
2570 | struct dl *dl; | |
2571 | struct ddf_super *ddf = st->sb; | |
2572 | int cnt = 0; | |
2573 | ||
2574 | for (dl = ddf->dlist; dl ; dl=dl->next) { | |
613b0d17 | 2575 | dl->raiddisk = -1; |
8592f29d N |
2576 | dl->esize = 0; |
2577 | } | |
2578 | /* Now find largest extent on each device */ | |
2579 | for (dl = ddf->dlist ; dl ; dl=dl->next) { | |
2580 | struct extent *e = get_extents(ddf, dl); | |
2581 | unsigned long long pos = 0; | |
2582 | int i = 0; | |
2583 | int found = 0; | |
2584 | unsigned long long minsize = size; | |
2585 | ||
2586 | if (size == 0) | |
2587 | minsize = chunk; | |
2588 | ||
2589 | if (!e) | |
2590 | continue; | |
2591 | do { | |
2592 | unsigned long long esize; | |
2593 | esize = e[i].start - pos; | |
2594 | if (esize >= minsize) { | |
2595 | found = 1; | |
2596 | minsize = esize; | |
2597 | } | |
2598 | pos = e[i].start + e[i].size; | |
2599 | i++; | |
2600 | } while (e[i-1].size); | |
2601 | if (found) { | |
2602 | cnt++; | |
2603 | dl->esize = minsize; | |
2604 | } | |
2605 | free(e); | |
2606 | } | |
2607 | if (cnt < raiddisks) { | |
e7b84f9d | 2608 | pr_err("not enough devices with space to create array.\n"); |
8592f29d N |
2609 | return 0; /* No enough free spaces large enough */ |
2610 | } | |
2611 | if (size == 0) { | |
2612 | /* choose the largest size of which there are at least 'raiddisk' */ | |
2613 | for (dl = ddf->dlist ; dl ; dl=dl->next) { | |
2614 | struct dl *dl2; | |
2615 | if (dl->esize <= size) | |
2616 | continue; | |
2617 | /* This is bigger than 'size', see if there are enough */ | |
2618 | cnt = 0; | |
7b80ad6a | 2619 | for (dl2 = ddf->dlist; dl2 ; dl2=dl2->next) |
8592f29d N |
2620 | if (dl2->esize >= dl->esize) |
2621 | cnt++; | |
2622 | if (cnt >= raiddisks) | |
2623 | size = dl->esize; | |
2624 | } | |
2625 | if (chunk) { | |
2626 | size = size / chunk; | |
2627 | size *= chunk; | |
2628 | } | |
2629 | *freesize = size; | |
2630 | if (size < 32) { | |
e7b84f9d | 2631 | pr_err("not enough spare devices to create array.\n"); |
8592f29d N |
2632 | return 0; |
2633 | } | |
2634 | } | |
2635 | /* We have a 'size' of which there are enough spaces. | |
2636 | * We simply do a first-fit */ | |
2637 | cnt = 0; | |
2638 | for (dl = ddf->dlist ; dl && cnt < raiddisks ; dl=dl->next) { | |
2639 | if (dl->esize < size) | |
2640 | continue; | |
613b0d17 | 2641 | |
8592f29d N |
2642 | dl->raiddisk = cnt; |
2643 | cnt++; | |
2644 | } | |
2645 | return 1; | |
2646 | } | |
2647 | ||
2c514b71 NB |
2648 | static int |
2649 | validate_geometry_ddf_container(struct supertype *st, | |
2650 | int level, int layout, int raiddisks, | |
2651 | int chunk, unsigned long long size, | |
af4348dd | 2652 | unsigned long long data_offset, |
2c514b71 NB |
2653 | char *dev, unsigned long long *freesize, |
2654 | int verbose); | |
78e44928 NB |
2655 | |
2656 | static int validate_geometry_ddf_bvd(struct supertype *st, | |
2657 | int level, int layout, int raiddisks, | |
c21e737b | 2658 | int *chunk, unsigned long long size, |
af4348dd | 2659 | unsigned long long data_offset, |
2c514b71 NB |
2660 | char *dev, unsigned long long *freesize, |
2661 | int verbose); | |
78e44928 NB |
2662 | |
2663 | static int validate_geometry_ddf(struct supertype *st, | |
2c514b71 | 2664 | int level, int layout, int raiddisks, |
c21e737b | 2665 | int *chunk, unsigned long long size, |
af4348dd | 2666 | unsigned long long data_offset, |
2c514b71 NB |
2667 | char *dev, unsigned long long *freesize, |
2668 | int verbose) | |
a322f70c DW |
2669 | { |
2670 | int fd; | |
2671 | struct mdinfo *sra; | |
2672 | int cfd; | |
2673 | ||
2674 | /* ddf potentially supports lots of things, but it depends on | |
2675 | * what devices are offered (and maybe kernel version?) | |
2676 | * If given unused devices, we will make a container. | |
2677 | * If given devices in a container, we will make a BVD. | |
2678 | * If given BVDs, we make an SVD, changing all the GUIDs in the process. | |
2679 | */ | |
2680 | ||
bb7295f1 N |
2681 | if (chunk && *chunk == UnSet) |
2682 | *chunk = DEFAULT_CHUNK; | |
2683 | ||
542ef4ec | 2684 | if (level == -1000000) level = LEVEL_CONTAINER; |
a322f70c | 2685 | if (level == LEVEL_CONTAINER) { |
78e44928 NB |
2686 | /* Must be a fresh device to add to a container */ |
2687 | return validate_geometry_ddf_container(st, level, layout, | |
c21e737b | 2688 | raiddisks, chunk?*chunk:0, |
af4348dd N |
2689 | size, data_offset, dev, |
2690 | freesize, | |
2c514b71 | 2691 | verbose); |
5f8097be NB |
2692 | } |
2693 | ||
78e44928 NB |
2694 | if (!dev) { |
2695 | /* Initial sanity check. Exclude illegal levels. */ | |
2696 | int i; | |
2697 | for (i=0; ddf_level_num[i].num1 != MAXINT; i++) | |
2698 | if (ddf_level_num[i].num2 == level) | |
2699 | break; | |
b42f577a N |
2700 | if (ddf_level_num[i].num1 == MAXINT) { |
2701 | if (verbose) | |
e7b84f9d | 2702 | pr_err("DDF does not support level %d arrays\n", |
613b0d17 | 2703 | level); |
78e44928 | 2704 | return 0; |
b42f577a | 2705 | } |
78e44928 | 2706 | /* Should check layout? etc */ |
8592f29d N |
2707 | |
2708 | if (st->sb && freesize) { | |
2709 | /* --create was given a container to create in. | |
2710 | * So we need to check that there are enough | |
2711 | * free spaces and return the amount of space. | |
2712 | * We may as well remember which drives were | |
2713 | * chosen so that add_to_super/getinfo_super | |
2714 | * can return them. | |
2715 | */ | |
c21e737b | 2716 | return reserve_space(st, raiddisks, size, chunk?*chunk:0, freesize); |
8592f29d | 2717 | } |
a322f70c | 2718 | return 1; |
78e44928 | 2719 | } |
a322f70c | 2720 | |
8592f29d N |
2721 | if (st->sb) { |
2722 | /* A container has already been opened, so we are | |
2723 | * creating in there. Maybe a BVD, maybe an SVD. | |
2724 | * Should make a distinction one day. | |
2725 | */ | |
2726 | return validate_geometry_ddf_bvd(st, level, layout, raiddisks, | |
af4348dd N |
2727 | chunk, size, data_offset, dev, |
2728 | freesize, | |
8592f29d N |
2729 | verbose); |
2730 | } | |
78e44928 NB |
2731 | /* This is the first device for the array. |
2732 | * If it is a container, we read it in and do automagic allocations, | |
2733 | * no other devices should be given. | |
2734 | * Otherwise it must be a member device of a container, and we | |
2735 | * do manual allocation. | |
2736 | * Later we should check for a BVD and make an SVD. | |
a322f70c | 2737 | */ |
a322f70c DW |
2738 | fd = open(dev, O_RDONLY|O_EXCL, 0); |
2739 | if (fd >= 0) { | |
4dd2df09 | 2740 | sra = sysfs_read(fd, NULL, GET_VERSION); |
a322f70c DW |
2741 | close(fd); |
2742 | if (sra && sra->array.major_version == -1 && | |
78e44928 NB |
2743 | strcmp(sra->text_version, "ddf") == 0) { |
2744 | ||
2745 | /* load super */ | |
2746 | /* find space for 'n' devices. */ | |
2747 | /* remember the devices */ | |
2748 | /* Somehow return the fact that we have enough */ | |
a322f70c DW |
2749 | } |
2750 | ||
2c514b71 | 2751 | if (verbose) |
e7b84f9d N |
2752 | pr_err("ddf: Cannot create this array " |
2753 | "on device %s - a container is required.\n", | |
2754 | dev); | |
a322f70c DW |
2755 | return 0; |
2756 | } | |
2757 | if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) { | |
2c514b71 | 2758 | if (verbose) |
e7b84f9d | 2759 | pr_err("ddf: Cannot open %s: %s\n", |
613b0d17 | 2760 | dev, strerror(errno)); |
a322f70c DW |
2761 | return 0; |
2762 | } | |
2763 | /* Well, it is in use by someone, maybe a 'ddf' container. */ | |
2764 | cfd = open_container(fd); | |
2765 | if (cfd < 0) { | |
2766 | close(fd); | |
2c514b71 | 2767 | if (verbose) |
e7b84f9d | 2768 | pr_err("ddf: Cannot use %s: %s\n", |
613b0d17 | 2769 | dev, strerror(EBUSY)); |
a322f70c DW |
2770 | return 0; |
2771 | } | |
4dd2df09 | 2772 | sra = sysfs_read(cfd, NULL, GET_VERSION); |
a322f70c DW |
2773 | close(fd); |
2774 | if (sra && sra->array.major_version == -1 && | |
2775 | strcmp(sra->text_version, "ddf") == 0) { | |
2776 | /* This is a member of a ddf container. Load the container | |
2777 | * and try to create a bvd | |
2778 | */ | |
2779 | struct ddf_super *ddf; | |
e1902a7b | 2780 | if (load_super_ddf_all(st, cfd, (void **)&ddf, NULL) == 0) { |
5f8097be | 2781 | st->sb = ddf; |
4dd2df09 | 2782 | strcpy(st->container_devnm, fd2devnm(cfd)); |
a322f70c | 2783 | close(cfd); |
78e44928 | 2784 | return validate_geometry_ddf_bvd(st, level, layout, |
a322f70c | 2785 | raiddisks, chunk, size, |
af4348dd | 2786 | data_offset, |
2c514b71 NB |
2787 | dev, freesize, |
2788 | verbose); | |
a322f70c DW |
2789 | } |
2790 | close(cfd); | |
c42ec1ed DW |
2791 | } else /* device may belong to a different container */ |
2792 | return 0; | |
2793 | ||
a322f70c DW |
2794 | return 1; |
2795 | } | |
2796 | ||
2c514b71 NB |
2797 | static int |
2798 | validate_geometry_ddf_container(struct supertype *st, | |
2799 | int level, int layout, int raiddisks, | |
2800 | int chunk, unsigned long long size, | |
af4348dd | 2801 | unsigned long long data_offset, |
2c514b71 NB |
2802 | char *dev, unsigned long long *freesize, |
2803 | int verbose) | |
a322f70c DW |
2804 | { |
2805 | int fd; | |
2806 | unsigned long long ldsize; | |
2807 | ||
2808 | if (level != LEVEL_CONTAINER) | |
2809 | return 0; | |
2810 | if (!dev) | |
2811 | return 1; | |
2812 | ||
2813 | fd = open(dev, O_RDONLY|O_EXCL, 0); | |
2814 | if (fd < 0) { | |
2c514b71 | 2815 | if (verbose) |
e7b84f9d | 2816 | pr_err("ddf: Cannot open %s: %s\n", |
613b0d17 | 2817 | dev, strerror(errno)); |
a322f70c DW |
2818 | return 0; |
2819 | } | |
2820 | if (!get_dev_size(fd, dev, &ldsize)) { | |
2821 | close(fd); | |
2822 | return 0; | |
2823 | } | |
2824 | close(fd); | |
2825 | ||
387fcd59 | 2826 | *freesize = avail_size_ddf(st, ldsize >> 9, INVALID_SECTORS); |
ea17e7aa N |
2827 | if (*freesize == 0) |
2828 | return 0; | |
a322f70c DW |
2829 | |
2830 | return 1; | |
2831 | } | |
2832 | ||
78e44928 NB |
2833 | static int validate_geometry_ddf_bvd(struct supertype *st, |
2834 | int level, int layout, int raiddisks, | |
c21e737b | 2835 | int *chunk, unsigned long long size, |
af4348dd | 2836 | unsigned long long data_offset, |
2c514b71 NB |
2837 | char *dev, unsigned long long *freesize, |
2838 | int verbose) | |
a322f70c DW |
2839 | { |
2840 | struct stat stb; | |
2841 | struct ddf_super *ddf = st->sb; | |
2842 | struct dl *dl; | |
5f8097be NB |
2843 | unsigned long long pos = 0; |
2844 | unsigned long long maxsize; | |
2845 | struct extent *e; | |
2846 | int i; | |
a322f70c | 2847 | /* ddf/bvd supports lots of things, but not containers */ |
b42f577a N |
2848 | if (level == LEVEL_CONTAINER) { |
2849 | if (verbose) | |
e7b84f9d | 2850 | pr_err("DDF cannot create a container within an container\n"); |
a322f70c | 2851 | return 0; |
b42f577a | 2852 | } |
a322f70c DW |
2853 | /* We must have the container info already read in. */ |
2854 | if (!ddf) | |
2855 | return 0; | |
2856 | ||
5f8097be NB |
2857 | if (!dev) { |
2858 | /* General test: make sure there is space for | |
2859 | * 'raiddisks' device extents of size 'size'. | |
2860 | */ | |
2861 | unsigned long long minsize = size; | |
2862 | int dcnt = 0; | |
2863 | if (minsize == 0) | |
2864 | minsize = 8; | |
2865 | for (dl = ddf->dlist; dl ; dl = dl->next) | |
2866 | { | |
2867 | int found = 0; | |
7e1432fb | 2868 | pos = 0; |
5f8097be NB |
2869 | |
2870 | i = 0; | |
2871 | e = get_extents(ddf, dl); | |
2872 | if (!e) continue; | |
2873 | do { | |
2874 | unsigned long long esize; | |
2875 | esize = e[i].start - pos; | |
2876 | if (esize >= minsize) | |
2877 | found = 1; | |
2878 | pos = e[i].start + e[i].size; | |
2879 | i++; | |
2880 | } while (e[i-1].size); | |
2881 | if (found) | |
2882 | dcnt++; | |
2883 | free(e); | |
2884 | } | |
2885 | if (dcnt < raiddisks) { | |
2c514b71 | 2886 | if (verbose) |
e7b84f9d N |
2887 | pr_err("ddf: Not enough devices with " |
2888 | "space for this array (%d < %d)\n", | |
2889 | dcnt, raiddisks); | |
5f8097be NB |
2890 | return 0; |
2891 | } | |
2892 | return 1; | |
2893 | } | |
a322f70c DW |
2894 | /* This device must be a member of the set */ |
2895 | if (stat(dev, &stb) < 0) | |
2896 | return 0; | |
2897 | if ((S_IFMT & stb.st_mode) != S_IFBLK) | |
2898 | return 0; | |
2899 | for (dl = ddf->dlist ; dl ; dl = dl->next) { | |
f21e18ca N |
2900 | if (dl->major == (int)major(stb.st_rdev) && |
2901 | dl->minor == (int)minor(stb.st_rdev)) | |
a322f70c DW |
2902 | break; |
2903 | } | |
5f8097be | 2904 | if (!dl) { |
2c514b71 | 2905 | if (verbose) |
e7b84f9d | 2906 | pr_err("ddf: %s is not in the " |
613b0d17 N |
2907 | "same DDF set\n", |
2908 | dev); | |
5f8097be NB |
2909 | return 0; |
2910 | } | |
2911 | e = get_extents(ddf, dl); | |
2912 | maxsize = 0; | |
2913 | i = 0; | |
2914 | if (e) do { | |
613b0d17 N |
2915 | unsigned long long esize; |
2916 | esize = e[i].start - pos; | |
2917 | if (esize >= maxsize) | |
2918 | maxsize = esize; | |
2919 | pos = e[i].start + e[i].size; | |
2920 | i++; | |
2921 | } while (e[i-1].size); | |
5f8097be | 2922 | *freesize = maxsize; |
a322f70c DW |
2923 | // FIXME here I am |
2924 | ||
2925 | return 1; | |
2926 | } | |
59e36268 | 2927 | |
a322f70c | 2928 | static int load_super_ddf_all(struct supertype *st, int fd, |
e1902a7b | 2929 | void **sbp, char *devname) |
a322f70c DW |
2930 | { |
2931 | struct mdinfo *sra; | |
2932 | struct ddf_super *super; | |
2933 | struct mdinfo *sd, *best = NULL; | |
2934 | int bestseq = 0; | |
2935 | int seq; | |
2936 | char nm[20]; | |
2937 | int dfd; | |
2938 | ||
b526e52d | 2939 | sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE); |
a322f70c DW |
2940 | if (!sra) |
2941 | return 1; | |
2942 | if (sra->array.major_version != -1 || | |
2943 | sra->array.minor_version != -2 || | |
2944 | strcmp(sra->text_version, "ddf") != 0) | |
2945 | return 1; | |
2946 | ||
6416d527 | 2947 | if (posix_memalign((void**)&super, 512, sizeof(*super)) != 0) |
a322f70c | 2948 | return 1; |
a2349791 | 2949 | memset(super, 0, sizeof(*super)); |
a322f70c DW |
2950 | |
2951 | /* first, try each device, and choose the best ddf */ | |
2952 | for (sd = sra->devs ; sd ; sd = sd->next) { | |
2953 | int rv; | |
2954 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); | |
7a7cc504 NB |
2955 | dfd = dev_open(nm, O_RDONLY); |
2956 | if (dfd < 0) | |
a322f70c DW |
2957 | return 2; |
2958 | rv = load_ddf_headers(dfd, super, NULL); | |
7a7cc504 | 2959 | close(dfd); |
a322f70c DW |
2960 | if (rv == 0) { |
2961 | seq = __be32_to_cpu(super->active->seq); | |
2962 | if (super->active->openflag) | |
2963 | seq--; | |
2964 | if (!best || seq > bestseq) { | |
2965 | bestseq = seq; | |
2966 | best = sd; | |
2967 | } | |
2968 | } | |
2969 | } | |
2970 | if (!best) | |
2971 | return 1; | |
2972 | /* OK, load this ddf */ | |
2973 | sprintf(nm, "%d:%d", best->disk.major, best->disk.minor); | |
2974 | dfd = dev_open(nm, O_RDONLY); | |
7a7cc504 | 2975 | if (dfd < 0) |
a322f70c DW |
2976 | return 1; |
2977 | load_ddf_headers(dfd, super, NULL); | |
2978 | load_ddf_global(dfd, super, NULL); | |
2979 | close(dfd); | |
2980 | /* Now we need the device-local bits */ | |
2981 | for (sd = sra->devs ; sd ; sd = sd->next) { | |
3d2c4fc7 DW |
2982 | int rv; |
2983 | ||
a322f70c | 2984 | sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor); |
e1902a7b | 2985 | dfd = dev_open(nm, O_RDWR); |
7a7cc504 | 2986 | if (dfd < 0) |
a322f70c | 2987 | return 2; |
3d2c4fc7 DW |
2988 | rv = load_ddf_headers(dfd, super, NULL); |
2989 | if (rv == 0) | |
e1902a7b | 2990 | rv = load_ddf_local(dfd, super, NULL, 1); |
3d2c4fc7 DW |
2991 | if (rv) |
2992 | return 1; | |
a322f70c | 2993 | } |
33414a01 | 2994 | |
a322f70c DW |
2995 | *sbp = super; |
2996 | if (st->ss == NULL) { | |
78e44928 | 2997 | st->ss = &super_ddf; |
a322f70c DW |
2998 | st->minor_version = 0; |
2999 | st->max_devs = 512; | |
3000 | } | |
4dd2df09 | 3001 | strcpy(st->container_devnm, fd2devnm(fd)); |
a322f70c DW |
3002 | return 0; |
3003 | } | |
2b959fbf N |
3004 | |
3005 | static int load_container_ddf(struct supertype *st, int fd, | |
3006 | char *devname) | |
3007 | { | |
3008 | return load_super_ddf_all(st, fd, &st->sb, devname); | |
3009 | } | |
3010 | ||
0e600426 | 3011 | #endif /* MDASSEMBLE */ |
a322f70c | 3012 | |
00bbdbda | 3013 | static struct mdinfo *container_content_ddf(struct supertype *st, char *subarray) |
598f0d58 NB |
3014 | { |
3015 | /* Given a container loaded by load_super_ddf_all, | |
3016 | * extract information about all the arrays into | |
3017 | * an mdinfo tree. | |
3018 | * | |
3019 | * For each vcl in conflist: create an mdinfo, fill it in, | |
3020 | * then look for matching devices (phys_refnum) in dlist | |
3021 | * and create appropriate device mdinfo. | |
3022 | */ | |
3023 | struct ddf_super *ddf = st->sb; | |
3024 | struct mdinfo *rest = NULL; | |
3025 | struct vcl *vc; | |
3026 | ||
3027 | for (vc = ddf->conflist ; vc ; vc=vc->next) | |
3028 | { | |
f21e18ca N |
3029 | unsigned int i; |
3030 | unsigned int j; | |
598f0d58 | 3031 | struct mdinfo *this; |
00bbdbda | 3032 | char *ep; |
90fa1a29 | 3033 | __u32 *cptr; |
00bbdbda N |
3034 | |
3035 | if (subarray && | |
3036 | (strtoul(subarray, &ep, 10) != vc->vcnum || | |
3037 | *ep != '\0')) | |
3038 | continue; | |
3039 | ||
503975b9 | 3040 | this = xcalloc(1, sizeof(*this)); |
598f0d58 NB |
3041 | this->next = rest; |
3042 | rest = this; | |
3043 | ||
598f0d58 NB |
3044 | this->array.level = map_num1(ddf_level_num, vc->conf.prl); |
3045 | this->array.raid_disks = | |
3046 | __be16_to_cpu(vc->conf.prim_elmnt_count); | |
60f18132 NB |
3047 | this->array.layout = rlq_to_layout(vc->conf.rlq, vc->conf.prl, |
3048 | this->array.raid_disks); | |
598f0d58 | 3049 | this->array.md_minor = -1; |
f35f2525 N |
3050 | this->array.major_version = -1; |
3051 | this->array.minor_version = -2; | |
90fa1a29 JS |
3052 | cptr = (__u32 *)(vc->conf.guid + 16); |
3053 | this->array.ctime = DECADE + __be32_to_cpu(*cptr); | |
598f0d58 NB |
3054 | this->array.utime = DECADE + |
3055 | __be32_to_cpu(vc->conf.timestamp); | |
3056 | this->array.chunk_size = 512 << vc->conf.chunk_shift; | |
3057 | ||
59e36268 | 3058 | i = vc->vcnum; |
7a7cc504 NB |
3059 | if ((ddf->virt->entries[i].state & DDF_state_inconsistent) || |
3060 | (ddf->virt->entries[i].init_state & DDF_initstate_mask) != | |
ed9d66aa | 3061 | DDF_init_full) { |
598f0d58 | 3062 | this->array.state = 0; |
ed9d66aa NB |
3063 | this->resync_start = 0; |
3064 | } else { | |
598f0d58 | 3065 | this->array.state = 1; |
b7528a20 | 3066 | this->resync_start = MaxSector; |
ed9d66aa | 3067 | } |
db42fa9b N |
3068 | memcpy(this->name, ddf->virt->entries[i].name, 16); |
3069 | this->name[16]=0; | |
3070 | for(j=0; j<16; j++) | |
3071 | if (this->name[j] == ' ') | |
3072 | this->name[j] = 0; | |
598f0d58 NB |
3073 | |
3074 | memset(this->uuid, 0, sizeof(this->uuid)); | |
3075 | this->component_size = __be64_to_cpu(vc->conf.blocks); | |
3076 | this->array.size = this->component_size / 2; | |
5f2aace8 | 3077 | this->container_member = i; |
598f0d58 | 3078 | |
c5afc314 N |
3079 | ddf->currentconf = vc; |
3080 | uuid_from_super_ddf(st, this->uuid); | |
3081 | ddf->currentconf = NULL; | |
3082 | ||
60f18132 | 3083 | sprintf(this->text_version, "/%s/%d", |
4dd2df09 | 3084 | st->container_devnm, this->container_member); |
60f18132 | 3085 | |
f21e18ca | 3086 | for (i = 0 ; i < ddf->mppe ; i++) { |
598f0d58 NB |
3087 | struct mdinfo *dev; |
3088 | struct dl *d; | |
fa033bec | 3089 | int stt; |
0cf5ef67 | 3090 | int pd; |
598f0d58 NB |
3091 | |
3092 | if (vc->conf.phys_refnum[i] == 0xFFFFFFFF) | |
3093 | continue; | |
3094 | ||
0cf5ef67 N |
3095 | for (pd = __be16_to_cpu(ddf->phys->used_pdes); |
3096 | pd--;) | |
3097 | if (ddf->phys->entries[pd].refnum | |
3098 | == vc->conf.phys_refnum[i]) | |
598f0d58 | 3099 | break; |
0cf5ef67 | 3100 | if (pd < 0) |
bc17324f | 3101 | continue; |
0cf5ef67 N |
3102 | |
3103 | stt = __be16_to_cpu(ddf->phys->entries[pd].state); | |
fa033bec N |
3104 | if ((stt & (DDF_Online|DDF_Failed|DDF_Rebuilding)) |
3105 | != DDF_Online) | |
3106 | continue; | |
3107 | ||
3108 | this->array.working_disks++; | |
bc17324f | 3109 | |
0cf5ef67 N |
3110 | for (d = ddf->dlist; d ; d=d->next) |
3111 | if (d->disk.refnum == vc->conf.phys_refnum[i]) | |
3112 | break; | |
3113 | if (d == NULL) | |
3114 | /* Haven't found that one yet, maybe there are others */ | |
3115 | continue; | |
3116 | ||
503975b9 | 3117 | dev = xcalloc(1, sizeof(*dev)); |
598f0d58 NB |
3118 | dev->next = this->devs; |
3119 | this->devs = dev; | |
3120 | ||
3121 | dev->disk.number = __be32_to_cpu(d->disk.refnum); | |
3122 | dev->disk.major = d->major; | |
3123 | dev->disk.minor = d->minor; | |
3124 | dev->disk.raid_disk = i; | |
3125 | dev->disk.state = (1<<MD_DISK_SYNC)|(1<<MD_DISK_ACTIVE); | |
d23534e4 | 3126 | dev->recovery_start = MaxSector; |
598f0d58 | 3127 | |
120f7677 NB |
3128 | dev->events = __be32_to_cpu(ddf->primary.seq); |
3129 | dev->data_offset = __be64_to_cpu(vc->lba_offset[i]); | |
598f0d58 NB |
3130 | dev->component_size = __be64_to_cpu(vc->conf.blocks); |
3131 | if (d->devname) | |
3132 | strcpy(dev->name, d->devname); | |
3133 | } | |
3134 | } | |
3135 | return rest; | |
3136 | } | |
3137 | ||
955e9ea1 | 3138 | static int store_super_ddf(struct supertype *st, int fd) |
a322f70c | 3139 | { |
955e9ea1 | 3140 | struct ddf_super *ddf = st->sb; |
a322f70c | 3141 | unsigned long long dsize; |
6416d527 | 3142 | void *buf; |
3d2c4fc7 | 3143 | int rc; |
a322f70c | 3144 | |
955e9ea1 DW |
3145 | if (!ddf) |
3146 | return 1; | |
3147 | ||
3148 | /* ->dlist and ->conflist will be set for updates, currently not | |
3149 | * supported | |
3150 | */ | |
3151 | if (ddf->dlist || ddf->conflist) | |
3152 | return 1; | |
3153 | ||
a322f70c DW |
3154 | if (!get_dev_size(fd, NULL, &dsize)) |
3155 | return 1; | |
3156 | ||
3d2c4fc7 DW |
3157 | if (posix_memalign(&buf, 512, 512) != 0) |
3158 | return 1; | |
6416d527 NB |
3159 | memset(buf, 0, 512); |
3160 | ||
a322f70c | 3161 | lseek64(fd, dsize-512, 0); |
3d2c4fc7 | 3162 | rc = write(fd, buf, 512); |
6416d527 | 3163 | free(buf); |
3d2c4fc7 DW |
3164 | if (rc < 0) |
3165 | return 1; | |
a322f70c DW |
3166 | return 0; |
3167 | } | |
3168 | ||
a19c88b8 NB |
3169 | static int compare_super_ddf(struct supertype *st, struct supertype *tst) |
3170 | { | |
3171 | /* | |
3172 | * return: | |
3173 | * 0 same, or first was empty, and second was copied | |
3174 | * 1 second had wrong number | |
3175 | * 2 wrong uuid | |
3176 | * 3 wrong other info | |
3177 | */ | |
3178 | struct ddf_super *first = st->sb; | |
3179 | struct ddf_super *second = tst->sb; | |
3180 | ||
3181 | if (!first) { | |
3182 | st->sb = tst->sb; | |
3183 | tst->sb = NULL; | |
3184 | return 0; | |
3185 | } | |
3186 | ||
3187 | if (memcmp(first->anchor.guid, second->anchor.guid, DDF_GUID_LEN) != 0) | |
3188 | return 2; | |
3189 | ||
3190 | /* FIXME should I look at anything else? */ | |
3191 | return 0; | |
3192 | } | |
3193 | ||
0e600426 | 3194 | #ifndef MDASSEMBLE |
4e5528c6 NB |
3195 | /* |
3196 | * A new array 'a' has been started which claims to be instance 'inst' | |
3197 | * within container 'c'. | |
3198 | * We need to confirm that the array matches the metadata in 'c' so | |
3199 | * that we don't corrupt any metadata. | |
3200 | */ | |
cba0191b | 3201 | static int ddf_open_new(struct supertype *c, struct active_array *a, char *inst) |
549e9569 | 3202 | { |
2c514b71 | 3203 | dprintf("ddf: open_new %s\n", inst); |
cba0191b | 3204 | a->info.container_member = atoi(inst); |
549e9569 NB |
3205 | return 0; |
3206 | } | |
3207 | ||
4e5528c6 NB |
3208 | /* |
3209 | * The array 'a' is to be marked clean in the metadata. | |
ed9d66aa | 3210 | * If '->resync_start' is not ~(unsigned long long)0, then the array is only |
4e5528c6 NB |
3211 | * clean up to the point (in sectors). If that cannot be recorded in the |
3212 | * metadata, then leave it as dirty. | |
3213 | * | |
3214 | * For DDF, we need to clear the DDF_state_inconsistent bit in the | |
3215 | * !global! virtual_disk.virtual_entry structure. | |
3216 | */ | |
01f157d7 | 3217 | static int ddf_set_array_state(struct active_array *a, int consistent) |
549e9569 | 3218 | { |
4e5528c6 NB |
3219 | struct ddf_super *ddf = a->container->sb; |
3220 | int inst = a->info.container_member; | |
18a2f463 | 3221 | int old = ddf->virt->entries[inst].state; |
01f157d7 N |
3222 | if (consistent == 2) { |
3223 | /* Should check if a recovery should be started FIXME */ | |
3224 | consistent = 1; | |
b7941fd6 | 3225 | if (!is_resync_complete(&a->info)) |
01f157d7 N |
3226 | consistent = 0; |
3227 | } | |
ed9d66aa NB |
3228 | if (consistent) |
3229 | ddf->virt->entries[inst].state &= ~DDF_state_inconsistent; | |
3230 | else | |
4e5528c6 | 3231 | ddf->virt->entries[inst].state |= DDF_state_inconsistent; |
18a2f463 NB |
3232 | if (old != ddf->virt->entries[inst].state) |
3233 | ddf->updates_pending = 1; | |
3234 | ||
3235 | old = ddf->virt->entries[inst].init_state; | |
ed9d66aa | 3236 | ddf->virt->entries[inst].init_state &= ~DDF_initstate_mask; |
b7941fd6 | 3237 | if (is_resync_complete(&a->info)) |
ed9d66aa | 3238 | ddf->virt->entries[inst].init_state |= DDF_init_full; |
b7941fd6 | 3239 | else if (a->info.resync_start == 0) |
ed9d66aa | 3240 | ddf->virt->entries[inst].init_state |= DDF_init_not; |
4e5528c6 | 3241 | else |
ed9d66aa | 3242 | ddf->virt->entries[inst].init_state |= DDF_init_quick; |
18a2f463 NB |
3243 | if (old != ddf->virt->entries[inst].init_state) |
3244 | ddf->updates_pending = 1; | |
ed9d66aa | 3245 | |
2c514b71 | 3246 | dprintf("ddf mark %d %s %llu\n", inst, consistent?"clean":"dirty", |
b7941fd6 | 3247 | a->info.resync_start); |
01f157d7 | 3248 | return consistent; |
fd7cde1b DW |
3249 | } |
3250 | ||
e1316fab | 3251 | #define container_of(ptr, type, member) ({ \ |
5d500228 N |
3252 | const typeof( ((type *)0)->member ) *__mptr = (ptr); \ |
3253 | (type *)( (char *)__mptr - offsetof(type,member) );}) | |
7a7cc504 NB |
3254 | /* |
3255 | * The state of each disk is stored in the global phys_disk structure | |
3256 | * in phys_disk.entries[n].state. | |
3257 | * This makes various combinations awkward. | |
3258 | * - When a device fails in any array, it must be failed in all arrays | |
3259 | * that include a part of this device. | |
3260 | * - When a component is rebuilding, we cannot include it officially in the | |
3261 | * array unless this is the only array that uses the device. | |
3262 | * | |
3263 | * So: when transitioning: | |
3264 | * Online -> failed, just set failed flag. monitor will propagate | |
3265 | * spare -> online, the device might need to be added to the array. | |
3266 | * spare -> failed, just set failed. Don't worry if in array or not. | |
3267 | */ | |
8d45d196 | 3268 | static void ddf_set_disk(struct active_array *a, int n, int state) |
549e9569 | 3269 | { |
7a7cc504 | 3270 | struct ddf_super *ddf = a->container->sb; |
f21e18ca | 3271 | unsigned int inst = a->info.container_member; |
7a7cc504 NB |
3272 | struct vd_config *vc = find_vdcr(ddf, inst); |
3273 | int pd = find_phys(ddf, vc->phys_refnum[n]); | |
3274 | int i, st, working; | |
e1316fab N |
3275 | struct mdinfo *mdi; |
3276 | struct dl *dl; | |
7a7cc504 NB |
3277 | |
3278 | if (vc == NULL) { | |
2c514b71 | 3279 | dprintf("ddf: cannot find instance %d!!\n", inst); |
7a7cc504 NB |
3280 | return; |
3281 | } | |
e1316fab N |
3282 | /* Find the matching slot in 'info'. */ |
3283 | for (mdi = a->info.devs; mdi; mdi = mdi->next) | |
3284 | if (mdi->disk.raid_disk == n) | |
3285 | break; | |
3286 | if (!mdi) | |
3287 | return; | |
3288 | ||
3289 | /* and find the 'dl' entry corresponding to that. */ | |
3290 | for (dl = ddf->dlist; dl; dl = dl->next) | |
77632af9 N |
3291 | if (mdi->state_fd >= 0 && |
3292 | mdi->disk.major == dl->major && | |
e1316fab N |
3293 | mdi->disk.minor == dl->minor) |
3294 | break; | |
3295 | if (!dl) | |
3296 | return; | |
3297 | ||
3298 | if (pd < 0 || pd != dl->pdnum) { | |
3299 | /* disk doesn't currently exist or has changed. | |
3300 | * If it is now in_sync, insert it. */ | |
7a7cc504 | 3301 | if ((state & DS_INSYNC) && ! (state & DS_FAULTY)) { |
e1316fab N |
3302 | struct vcl *vcl; |
3303 | pd = dl->pdnum; | |
3304 | vc->phys_refnum[n] = dl->disk.refnum; | |
3305 | vcl = container_of(vc, struct vcl, conf); | |
3306 | vcl->lba_offset[n] = mdi->data_offset; | |
3307 | ddf->phys->entries[pd].type &= | |
3308 | ~__cpu_to_be16(DDF_Global_Spare); | |
3309 | ddf->phys->entries[pd].type |= | |
3310 | __cpu_to_be16(DDF_Active_in_VD); | |
3311 | ddf->updates_pending = 1; | |
7a7cc504 NB |
3312 | } |
3313 | } else { | |
18a2f463 | 3314 | int old = ddf->phys->entries[pd].state; |
7a7cc504 NB |
3315 | if (state & DS_FAULTY) |
3316 | ddf->phys->entries[pd].state |= __cpu_to_be16(DDF_Failed); | |
3317 | if (state & DS_INSYNC) { | |
3318 | ddf->phys->entries[pd].state |= __cpu_to_be16(DDF_Online); | |
3319 | ddf->phys->entries[pd].state &= __cpu_to_be16(~DDF_Rebuilding); | |
3320 | } | |
18a2f463 NB |
3321 | if (old != ddf->phys->entries[pd].state) |
3322 | ddf->updates_pending = 1; | |
7a7cc504 NB |
3323 | } |
3324 | ||
2c514b71 | 3325 | dprintf("ddf: set_disk %d to %x\n", n, state); |
7e1432fb | 3326 | |
7a7cc504 NB |
3327 | /* Now we need to check the state of the array and update |
3328 | * virtual_disk.entries[n].state. | |
3329 | * It needs to be one of "optimal", "degraded", "failed". | |
3330 | * I don't understand 'deleted' or 'missing'. | |
3331 | */ | |
3332 | working = 0; | |
3333 | for (i=0; i < a->info.array.raid_disks; i++) { | |
3334 | pd = find_phys(ddf, vc->phys_refnum[i]); | |
3335 | if (pd < 0) | |
3336 | continue; | |
57632f4a NB |
3337 | st = __be16_to_cpu(ddf->phys->entries[pd].state); |
3338 | if ((st & (DDF_Online|DDF_Failed|DDF_Rebuilding)) | |
7a7cc504 NB |
3339 | == DDF_Online) |
3340 | working++; | |
3341 | } | |
3342 | state = DDF_state_degraded; | |
3343 | if (working == a->info.array.raid_disks) | |
3344 | state = DDF_state_optimal; | |
3345 | else switch(vc->prl) { | |
613b0d17 N |
3346 | case DDF_RAID0: |
3347 | case DDF_CONCAT: | |
3348 | case DDF_JBOD: | |
7a7cc504 | 3349 | state = DDF_state_failed; |
613b0d17 N |
3350 | break; |
3351 | case DDF_RAID1: | |
3352 | if (working == 0) | |
3353 | state = DDF_state_failed; | |
3354 | else if (working == 2 && state == DDF_state_degraded) | |
3355 | state = DDF_state_part_optimal; | |
3356 | break; | |
3357 | case DDF_RAID4: | |
3358 | case DDF_RAID5: | |
3359 | if (working < a->info.array.raid_disks-1) | |
3360 | state = DDF_state_failed; | |
3361 | break; | |
3362 | case DDF_RAID6: | |
3363 | if (working < a->info.array.raid_disks-2) | |
3364 | state = DDF_state_failed; | |
3365 | else if (working == a->info.array.raid_disks-1) | |
3366 | state = DDF_state_part_optimal; | |
3367 | break; | |
3368 | } | |
7a7cc504 | 3369 | |
18a2f463 NB |
3370 | if (ddf->virt->entries[inst].state != |
3371 | ((ddf->virt->entries[inst].state & ~DDF_state_mask) | |
3372 | | state)) { | |
3373 | ||
3374 | ddf->virt->entries[inst].state = | |
3375 | (ddf->virt->entries[inst].state & ~DDF_state_mask) | |
3376 | | state; | |
3377 | ddf->updates_pending = 1; | |
3378 | } | |
7a7cc504 | 3379 | |
549e9569 NB |
3380 | } |
3381 | ||
2e735d19 | 3382 | static void ddf_sync_metadata(struct supertype *st) |
549e9569 | 3383 | { |
7a7cc504 NB |
3384 | |
3385 | /* | |
3386 | * Write all data to all devices. | |
3387 | * Later, we might be able to track whether only local changes | |
3388 | * have been made, or whether any global data has been changed, | |
3389 | * but ddf is sufficiently weird that it probably always | |
3390 | * changes global data .... | |
3391 | */ | |
18a2f463 NB |
3392 | struct ddf_super *ddf = st->sb; |
3393 | if (!ddf->updates_pending) | |
3394 | return; | |
3395 | ddf->updates_pending = 0; | |
1cc7f4fe | 3396 | __write_init_super_ddf(st); |
2c514b71 | 3397 | dprintf("ddf: sync_metadata\n"); |
549e9569 NB |
3398 | } |
3399 | ||
88c164f4 NB |
3400 | static void ddf_process_update(struct supertype *st, |
3401 | struct metadata_update *update) | |
3402 | { | |
3403 | /* Apply this update to the metadata. | |
3404 | * The first 4 bytes are a DDF_*_MAGIC which guides | |
3405 | * our actions. | |
3406 | * Possible update are: | |
3407 | * DDF_PHYS_RECORDS_MAGIC | |
4dd968cc N |
3408 | * Add a new physical device or remove an old one. |
3409 | * Changes to this record only happen implicitly. | |
88c164f4 NB |
3410 | * used_pdes is the device number. |
3411 | * DDF_VIRT_RECORDS_MAGIC | |
3412 | * Add a new VD. Possibly also change the 'access' bits. | |
3413 | * populated_vdes is the entry number. | |
3414 | * DDF_VD_CONF_MAGIC | |
3415 | * New or updated VD. the VIRT_RECORD must already | |
3416 | * exist. For an update, phys_refnum and lba_offset | |
3417 | * (at least) are updated, and the VD_CONF must | |
3418 | * be written to precisely those devices listed with | |
3419 | * a phys_refnum. | |
3420 | * DDF_SPARE_ASSIGN_MAGIC | |
3421 | * replacement Spare Assignment Record... but for which device? | |
3422 | * | |
3423 | * So, e.g.: | |
3424 | * - to create a new array, we send a VIRT_RECORD and | |
3425 | * a VD_CONF. Then assemble and start the array. | |
3426 | * - to activate a spare we send a VD_CONF to add the phys_refnum | |
3427 | * and offset. This will also mark the spare as active with | |
3428 | * a spare-assignment record. | |
3429 | */ | |
3430 | struct ddf_super *ddf = st->sb; | |
3431 | __u32 *magic = (__u32*)update->buf; | |
3432 | struct phys_disk *pd; | |
3433 | struct virtual_disk *vd; | |
3434 | struct vd_config *vc; | |
3435 | struct vcl *vcl; | |
3436 | struct dl *dl; | |
f21e18ca N |
3437 | unsigned int mppe; |
3438 | unsigned int ent; | |
c7079c84 | 3439 | unsigned int pdnum, pd2; |
88c164f4 | 3440 | |
2c514b71 | 3441 | dprintf("Process update %x\n", *magic); |
7e1432fb | 3442 | |
88c164f4 NB |
3443 | switch (*magic) { |
3444 | case DDF_PHYS_RECORDS_MAGIC: | |
3445 | ||
3446 | if (update->len != (sizeof(struct phys_disk) + | |
3447 | sizeof(struct phys_disk_entry))) | |
3448 | return; | |
3449 | pd = (struct phys_disk*)update->buf; | |
3450 | ||
3451 | ent = __be16_to_cpu(pd->used_pdes); | |
3452 | if (ent >= __be16_to_cpu(ddf->phys->max_pdes)) | |
3453 | return; | |
4dd968cc N |
3454 | if (pd->entries[0].state & __cpu_to_be16(DDF_Missing)) { |
3455 | struct dl **dlp; | |
3456 | /* removing this disk. */ | |
3457 | ddf->phys->entries[ent].state |= __cpu_to_be16(DDF_Missing); | |
3458 | for (dlp = &ddf->dlist; *dlp; dlp = &(*dlp)->next) { | |
3459 | struct dl *dl = *dlp; | |
3460 | if (dl->pdnum == (signed)ent) { | |
3461 | close(dl->fd); | |
3462 | dl->fd = -1; | |
3463 | /* FIXME this doesn't free | |
3464 | * dl->devname */ | |
3465 | update->space = dl; | |
3466 | *dlp = dl->next; | |
3467 | break; | |
3468 | } | |
3469 | } | |
3470 | ddf->updates_pending = 1; | |
3471 | return; | |
3472 | } | |
88c164f4 NB |
3473 | if (!all_ff(ddf->phys->entries[ent].guid)) |
3474 | return; | |
3475 | ddf->phys->entries[ent] = pd->entries[0]; | |
3476 | ddf->phys->used_pdes = __cpu_to_be16(1 + | |
613b0d17 | 3477 | __be16_to_cpu(ddf->phys->used_pdes)); |
18a2f463 | 3478 | ddf->updates_pending = 1; |
2cc2983d N |
3479 | if (ddf->add_list) { |
3480 | struct active_array *a; | |
3481 | struct dl *al = ddf->add_list; | |
3482 | ddf->add_list = al->next; | |
3483 | ||
3484 | al->next = ddf->dlist; | |
3485 | ddf->dlist = al; | |
3486 | ||
3487 | /* As a device has been added, we should check | |
3488 | * for any degraded devices that might make | |
3489 | * use of this spare */ | |
3490 | for (a = st->arrays ; a; a=a->next) | |
3491 | a->check_degraded = 1; | |
3492 | } | |
88c164f4 NB |
3493 | break; |
3494 | ||
3495 | case DDF_VIRT_RECORDS_MAGIC: | |
3496 | ||
3497 | if (update->len != (sizeof(struct virtual_disk) + | |
3498 | sizeof(struct virtual_entry))) | |
3499 | return; | |
3500 | vd = (struct virtual_disk*)update->buf; | |
3501 | ||
3502 | ent = __be16_to_cpu(vd->populated_vdes); | |
3503 | if (ent >= __be16_to_cpu(ddf->virt->max_vdes)) | |
3504 | return; | |
3505 | if (!all_ff(ddf->virt->entries[ent].guid)) | |
3506 | return; | |
3507 | ddf->virt->entries[ent] = vd->entries[0]; | |
3508 | ddf->virt->populated_vdes = __cpu_to_be16(1 + | |
613b0d17 | 3509 | __be16_to_cpu(ddf->virt->populated_vdes)); |
18a2f463 | 3510 | ddf->updates_pending = 1; |
88c164f4 NB |
3511 | break; |
3512 | ||
3513 | case DDF_VD_CONF_MAGIC: | |
2c514b71 | 3514 | dprintf("len %d %d\n", update->len, ddf->conf_rec_len); |
88c164f4 NB |
3515 | |
3516 | mppe = __be16_to_cpu(ddf->anchor.max_primary_element_entries); | |
f21e18ca | 3517 | if ((unsigned)update->len != ddf->conf_rec_len * 512) |
88c164f4 NB |
3518 | return; |
3519 | vc = (struct vd_config*)update->buf; | |
3520 | for (vcl = ddf->conflist; vcl ; vcl = vcl->next) | |
3521 | if (memcmp(vcl->conf.guid, vc->guid, DDF_GUID_LEN) == 0) | |
3522 | break; | |
2c514b71 | 3523 | dprintf("vcl = %p\n", vcl); |
88c164f4 NB |
3524 | if (vcl) { |
3525 | /* An update, just copy the phys_refnum and lba_offset | |
3526 | * fields | |
3527 | */ | |
3528 | memcpy(vcl->conf.phys_refnum, vc->phys_refnum, | |
3529 | mppe * (sizeof(__u32) + sizeof(__u64))); | |
3530 | } else { | |
3531 | /* A new VD_CONF */ | |
e6b9548d DW |
3532 | if (!update->space) |
3533 | return; | |
88c164f4 NB |
3534 | vcl = update->space; |
3535 | update->space = NULL; | |
3536 | vcl->next = ddf->conflist; | |
edd8d13c | 3537 | memcpy(&vcl->conf, vc, update->len); |
88c164f4 NB |
3538 | vcl->lba_offset = (__u64*) |
3539 | &vcl->conf.phys_refnum[mppe]; | |
1502a43a N |
3540 | for (ent = 0; |
3541 | ent < __be16_to_cpu(ddf->virt->populated_vdes); | |
3542 | ent++) | |
3543 | if (memcmp(vc->guid, ddf->virt->entries[ent].guid, | |
3544 | DDF_GUID_LEN) == 0) { | |
3545 | vcl->vcnum = ent; | |
3546 | break; | |
3547 | } | |
88c164f4 NB |
3548 | ddf->conflist = vcl; |
3549 | } | |
c7079c84 N |
3550 | /* Set DDF_Transition on all Failed devices - to help |
3551 | * us detect those that are no longer in use | |
3552 | */ | |
3553 | for (pdnum = 0; pdnum < __be16_to_cpu(ddf->phys->used_pdes); pdnum++) | |
3554 | if (ddf->phys->entries[pdnum].state | |
3555 | & __be16_to_cpu(DDF_Failed)) | |
3556 | ddf->phys->entries[pdnum].state | |
3557 | |= __be16_to_cpu(DDF_Transition); | |
88c164f4 NB |
3558 | /* Now make sure vlist is correct for each dl. */ |
3559 | for (dl = ddf->dlist; dl; dl = dl->next) { | |
f21e18ca N |
3560 | unsigned int dn; |
3561 | unsigned int vn = 0; | |
8401644c | 3562 | int in_degraded = 0; |
88c164f4 NB |
3563 | for (vcl = ddf->conflist; vcl ; vcl = vcl->next) |
3564 | for (dn=0; dn < ddf->mppe ; dn++) | |
3565 | if (vcl->conf.phys_refnum[dn] == | |
3566 | dl->disk.refnum) { | |
8401644c | 3567 | int vstate; |
2c514b71 NB |
3568 | dprintf("dev %d has %p at %d\n", |
3569 | dl->pdnum, vcl, vn); | |
c7079c84 N |
3570 | /* Clear the Transition flag */ |
3571 | if (ddf->phys->entries[dl->pdnum].state | |
3572 | & __be16_to_cpu(DDF_Failed)) | |
3573 | ddf->phys->entries[dl->pdnum].state &= | |
3574 | ~__be16_to_cpu(DDF_Transition); | |
3575 | ||
88c164f4 | 3576 | dl->vlist[vn++] = vcl; |
8401644c N |
3577 | vstate = ddf->virt->entries[vcl->vcnum].state |
3578 | & DDF_state_mask; | |
3579 | if (vstate == DDF_state_degraded || | |
3580 | vstate == DDF_state_part_optimal) | |
3581 | in_degraded = 1; | |
88c164f4 NB |
3582 | break; |
3583 | } | |
3584 | while (vn < ddf->max_part) | |
3585 | dl->vlist[vn++] = NULL; | |
7e1432fb NB |
3586 | if (dl->vlist[0]) { |
3587 | ddf->phys->entries[dl->pdnum].type &= | |
3588 | ~__cpu_to_be16(DDF_Global_Spare); | |
8401644c N |
3589 | if (!(ddf->phys->entries[dl->pdnum].type & |
3590 | __cpu_to_be16(DDF_Active_in_VD))) { | |
613b0d17 N |
3591 | ddf->phys->entries[dl->pdnum].type |= |
3592 | __cpu_to_be16(DDF_Active_in_VD); | |
3593 | if (in_degraded) | |
3594 | ddf->phys->entries[dl->pdnum].state |= | |
3595 | __cpu_to_be16(DDF_Rebuilding); | |
3596 | } | |
7e1432fb NB |
3597 | } |
3598 | if (dl->spare) { | |
3599 | ddf->phys->entries[dl->pdnum].type &= | |
3600 | ~__cpu_to_be16(DDF_Global_Spare); | |
3601 | ddf->phys->entries[dl->pdnum].type |= | |
3602 | __cpu_to_be16(DDF_Spare); | |
3603 | } | |
3604 | if (!dl->vlist[0] && !dl->spare) { | |
3605 | ddf->phys->entries[dl->pdnum].type |= | |
3606 | __cpu_to_be16(DDF_Global_Spare); | |
3607 | ddf->phys->entries[dl->pdnum].type &= | |
3608 | ~__cpu_to_be16(DDF_Spare | | |
3609 | DDF_Active_in_VD); | |
3610 | } | |
88c164f4 | 3611 | } |
c7079c84 N |
3612 | |
3613 | /* Now remove any 'Failed' devices that are not part | |
3614 | * of any VD. They will have the Transition flag set. | |
3615 | * Once done, we need to update all dl->pdnum numbers. | |
3616 | */ | |
3617 | pd2 = 0; | |
3618 | for (pdnum = 0; pdnum < __be16_to_cpu(ddf->phys->used_pdes); pdnum++) | |
3619 | if ((ddf->phys->entries[pdnum].state | |
3620 | & __be16_to_cpu(DDF_Failed)) | |
3621 | && (ddf->phys->entries[pdnum].state | |
3622 | & __be16_to_cpu(DDF_Transition))) | |
3623 | /* skip this one */; | |
3624 | else if (pdnum == pd2) | |
3625 | pd2++; | |
3626 | else { | |
3627 | ddf->phys->entries[pd2] = ddf->phys->entries[pdnum]; | |
3628 | for (dl = ddf->dlist; dl; dl = dl->next) | |
3629 | if (dl->pdnum == (int)pdnum) | |
3630 | dl->pdnum = pd2; | |
3631 | pd2++; | |
3632 | } | |
3633 | ddf->phys->used_pdes = __cpu_to_be16(pd2); | |
3634 | while (pd2 < pdnum) { | |
3635 | memset(ddf->phys->entries[pd2].guid, 0xff, DDF_GUID_LEN); | |
3636 | pd2++; | |
3637 | } | |
3638 | ||
18a2f463 | 3639 | ddf->updates_pending = 1; |
88c164f4 NB |
3640 | break; |
3641 | case DDF_SPARE_ASSIGN_MAGIC: | |
3642 | default: break; | |
3643 | } | |
3644 | } | |
3645 | ||
edd8d13c NB |
3646 | static void ddf_prepare_update(struct supertype *st, |
3647 | struct metadata_update *update) | |
3648 | { | |
3649 | /* This update arrived at managemon. | |
3650 | * We are about to pass it to monitor. | |
3651 | * If a malloc is needed, do it here. | |
3652 | */ | |
3653 | struct ddf_super *ddf = st->sb; | |
3654 | __u32 *magic = (__u32*)update->buf; | |
3655 | if (*magic == DDF_VD_CONF_MAGIC) | |
e6b9548d | 3656 | if (posix_memalign(&update->space, 512, |
613b0d17 N |
3657 | offsetof(struct vcl, conf) |
3658 | + ddf->conf_rec_len * 512) != 0) | |
e6b9548d | 3659 | update->space = NULL; |
edd8d13c NB |
3660 | } |
3661 | ||
7e1432fb NB |
3662 | /* |
3663 | * Check if the array 'a' is degraded but not failed. | |
3664 | * If it is, find as many spares as are available and needed and | |
3665 | * arrange for their inclusion. | |
3666 | * We only choose devices which are not already in the array, | |
3667 | * and prefer those with a spare-assignment to this array. | |
3668 | * otherwise we choose global spares - assuming always that | |
3669 | * there is enough room. | |
3670 | * For each spare that we assign, we return an 'mdinfo' which | |
3671 | * describes the position for the device in the array. | |
3672 | * We also add to 'updates' a DDF_VD_CONF_MAGIC update with | |
3673 | * the new phys_refnum and lba_offset values. | |
3674 | * | |
3675 | * Only worry about BVDs at the moment. | |
3676 | */ | |
3677 | static struct mdinfo *ddf_activate_spare(struct active_array *a, | |
3678 | struct metadata_update **updates) | |
3679 | { | |
3680 | int working = 0; | |
3681 | struct mdinfo *d; | |
3682 | struct ddf_super *ddf = a->container->sb; | |
3683 | int global_ok = 0; | |
3684 | struct mdinfo *rv = NULL; | |
3685 | struct mdinfo *di; | |
3686 | struct metadata_update *mu; | |
3687 | struct dl *dl; | |
3688 | int i; | |
3689 | struct vd_config *vc; | |
3690 | __u64 *lba; | |
3691 | ||
7e1432fb NB |
3692 | for (d = a->info.devs ; d ; d = d->next) { |
3693 | if ((d->curr_state & DS_FAULTY) && | |
613b0d17 | 3694 | d->state_fd >= 0) |
7e1432fb NB |
3695 | /* wait for Removal to happen */ |
3696 | return NULL; | |
3697 | if (d->state_fd >= 0) | |
3698 | working ++; | |
3699 | } | |
3700 | ||
2c514b71 NB |
3701 | dprintf("ddf_activate: working=%d (%d) level=%d\n", working, a->info.array.raid_disks, |
3702 | a->info.array.level); | |
7e1432fb NB |
3703 | if (working == a->info.array.raid_disks) |
3704 | return NULL; /* array not degraded */ | |
3705 | switch (a->info.array.level) { | |
3706 | case 1: | |
3707 | if (working == 0) | |
3708 | return NULL; /* failed */ | |
3709 | break; | |
3710 | case 4: | |
3711 | case 5: | |
3712 | if (working < a->info.array.raid_disks - 1) | |
3713 | return NULL; /* failed */ | |
3714 | break; | |
3715 | case 6: | |
3716 | if (working < a->info.array.raid_disks - 2) | |
3717 | return NULL; /* failed */ | |
3718 | break; | |
3719 | default: /* concat or stripe */ | |
3720 | return NULL; /* failed */ | |
3721 | } | |
3722 | ||
3723 | /* For each slot, if it is not working, find a spare */ | |
3724 | dl = ddf->dlist; | |
3725 | for (i = 0; i < a->info.array.raid_disks; i++) { | |
3726 | for (d = a->info.devs ; d ; d = d->next) | |
3727 | if (d->disk.raid_disk == i) | |
3728 | break; | |
2c514b71 | 3729 | dprintf("found %d: %p %x\n", i, d, d?d->curr_state:0); |
7e1432fb NB |
3730 | if (d && (d->state_fd >= 0)) |
3731 | continue; | |
3732 | ||
3733 | /* OK, this device needs recovery. Find a spare */ | |
3734 | again: | |
3735 | for ( ; dl ; dl = dl->next) { | |
3736 | unsigned long long esize; | |
3737 | unsigned long long pos; | |
3738 | struct mdinfo *d2; | |
3739 | int is_global = 0; | |
3740 | int is_dedicated = 0; | |
3741 | struct extent *ex; | |
f21e18ca | 3742 | unsigned int j; |
7e1432fb NB |
3743 | /* If in this array, skip */ |
3744 | for (d2 = a->info.devs ; d2 ; d2 = d2->next) | |
7590d562 N |
3745 | if (d2->state_fd >= 0 && |
3746 | d2->disk.major == dl->major && | |
7e1432fb | 3747 | d2->disk.minor == dl->minor) { |
2c514b71 | 3748 | dprintf("%x:%x already in array\n", dl->major, dl->minor); |
7e1432fb NB |
3749 | break; |
3750 | } | |
3751 | if (d2) | |
3752 | continue; | |
3753 | if (ddf->phys->entries[dl->pdnum].type & | |
3754 | __cpu_to_be16(DDF_Spare)) { | |
3755 | /* Check spare assign record */ | |
3756 | if (dl->spare) { | |
3757 | if (dl->spare->type & DDF_spare_dedicated) { | |
3758 | /* check spare_ents for guid */ | |
3759 | for (j = 0 ; | |
3760 | j < __be16_to_cpu(dl->spare->populated); | |
3761 | j++) { | |
3762 | if (memcmp(dl->spare->spare_ents[j].guid, | |
3763 | ddf->virt->entries[a->info.container_member].guid, | |
3764 | DDF_GUID_LEN) == 0) | |
3765 | is_dedicated = 1; | |
3766 | } | |
3767 | } else | |
3768 | is_global = 1; | |
3769 | } | |
3770 | } else if (ddf->phys->entries[dl->pdnum].type & | |
3771 | __cpu_to_be16(DDF_Global_Spare)) { | |
3772 | is_global = 1; | |
e0e7aeaa N |
3773 | } else if (!(ddf->phys->entries[dl->pdnum].state & |
3774 | __cpu_to_be16(DDF_Failed))) { | |
3775 | /* we can possibly use some of this */ | |
3776 | is_global = 1; | |
7e1432fb NB |
3777 | } |
3778 | if ( ! (is_dedicated || | |
3779 | (is_global && global_ok))) { | |
2c514b71 | 3780 | dprintf("%x:%x not suitable: %d %d\n", dl->major, dl->minor, |
613b0d17 | 3781 | is_dedicated, is_global); |
7e1432fb NB |
3782 | continue; |
3783 | } | |
3784 | ||
3785 | /* We are allowed to use this device - is there space? | |
3786 | * We need a->info.component_size sectors */ | |
3787 | ex = get_extents(ddf, dl); | |
3788 | if (!ex) { | |
2c514b71 | 3789 | dprintf("cannot get extents\n"); |
7e1432fb NB |
3790 | continue; |
3791 | } | |
3792 | j = 0; pos = 0; | |
3793 | esize = 0; | |
3794 | ||
3795 | do { | |
3796 | esize = ex[j].start - pos; | |
3797 | if (esize >= a->info.component_size) | |
3798 | break; | |
e5cc7d46 N |
3799 | pos = ex[j].start + ex[j].size; |
3800 | j++; | |
3801 | } while (ex[j-1].size); | |
7e1432fb NB |
3802 | |
3803 | free(ex); | |
3804 | if (esize < a->info.component_size) { | |
e5cc7d46 N |
3805 | dprintf("%x:%x has no room: %llu %llu\n", |
3806 | dl->major, dl->minor, | |
2c514b71 | 3807 | esize, a->info.component_size); |
7e1432fb NB |
3808 | /* No room */ |
3809 | continue; | |
3810 | } | |
3811 | ||
3812 | /* Cool, we have a device with some space at pos */ | |
503975b9 | 3813 | di = xcalloc(1, sizeof(*di)); |
7e1432fb NB |
3814 | di->disk.number = i; |
3815 | di->disk.raid_disk = i; | |
3816 | di->disk.major = dl->major; | |
3817 | di->disk.minor = dl->minor; | |
3818 | di->disk.state = 0; | |
d23534e4 | 3819 | di->recovery_start = 0; |
7e1432fb NB |
3820 | di->data_offset = pos; |
3821 | di->component_size = a->info.component_size; | |
3822 | di->container_member = dl->pdnum; | |
3823 | di->next = rv; | |
3824 | rv = di; | |
2c514b71 NB |
3825 | dprintf("%x:%x to be %d at %llu\n", dl->major, dl->minor, |
3826 | i, pos); | |
7e1432fb NB |
3827 | |
3828 | break; | |
3829 | } | |
3830 | if (!dl && ! global_ok) { | |
3831 | /* not enough dedicated spares, try global */ | |
3832 | global_ok = 1; | |
3833 | dl = ddf->dlist; | |
3834 | goto again; | |
3835 | } | |
3836 | } | |
3837 | ||
3838 | if (!rv) | |
3839 | /* No spares found */ | |
3840 | return rv; | |
3841 | /* Now 'rv' has a list of devices to return. | |
3842 | * Create a metadata_update record to update the | |
3843 | * phys_refnum and lba_offset values | |
3844 | */ | |
503975b9 N |
3845 | mu = xmalloc(sizeof(*mu)); |
3846 | if (posix_memalign(&mu->space, 512, sizeof(struct vcl)) != 0) { | |
79244939 DW |
3847 | free(mu); |
3848 | mu = NULL; | |
3849 | } | |
503975b9 | 3850 | mu->buf = xmalloc(ddf->conf_rec_len * 512); |
7590d562 N |
3851 | mu->len = ddf->conf_rec_len * 512; |
3852 | mu->space = NULL; | |
f50ae22e | 3853 | mu->space_list = NULL; |
7e1432fb NB |
3854 | mu->next = *updates; |
3855 | vc = find_vdcr(ddf, a->info.container_member); | |
3856 | memcpy(mu->buf, vc, ddf->conf_rec_len * 512); | |
3857 | ||
3858 | vc = (struct vd_config*)mu->buf; | |
3859 | lba = (__u64*)&vc->phys_refnum[ddf->mppe]; | |
3860 | for (di = rv ; di ; di = di->next) { | |
3861 | vc->phys_refnum[di->disk.raid_disk] = | |
3862 | ddf->phys->entries[dl->pdnum].refnum; | |
3863 | lba[di->disk.raid_disk] = di->data_offset; | |
3864 | } | |
3865 | *updates = mu; | |
3866 | return rv; | |
3867 | } | |
0e600426 | 3868 | #endif /* MDASSEMBLE */ |
7e1432fb | 3869 | |
b640a252 N |
3870 | static int ddf_level_to_layout(int level) |
3871 | { | |
3872 | switch(level) { | |
3873 | case 0: | |
3874 | case 1: | |
3875 | return 0; | |
3876 | case 5: | |
3877 | return ALGORITHM_LEFT_SYMMETRIC; | |
3878 | case 6: | |
3879 | return ALGORITHM_ROTATING_N_CONTINUE; | |
3880 | case 10: | |
3881 | return 0x102; | |
3882 | default: | |
3883 | return UnSet; | |
3884 | } | |
3885 | } | |
3886 | ||
30f58b22 DW |
3887 | static void default_geometry_ddf(struct supertype *st, int *level, int *layout, int *chunk) |
3888 | { | |
3889 | if (level && *level == UnSet) | |
3890 | *level = LEVEL_CONTAINER; | |
3891 | ||
3892 | if (level && layout && *layout == UnSet) | |
3893 | *layout = ddf_level_to_layout(*level); | |
3894 | } | |
3895 | ||
a322f70c DW |
3896 | struct superswitch super_ddf = { |
3897 | #ifndef MDASSEMBLE | |
3898 | .examine_super = examine_super_ddf, | |
3899 | .brief_examine_super = brief_examine_super_ddf, | |
4737ae25 | 3900 | .brief_examine_subarrays = brief_examine_subarrays_ddf, |
bceedeec | 3901 | .export_examine_super = export_examine_super_ddf, |
a322f70c DW |
3902 | .detail_super = detail_super_ddf, |
3903 | .brief_detail_super = brief_detail_super_ddf, | |
3904 | .validate_geometry = validate_geometry_ddf, | |
78e44928 | 3905 | .write_init_super = write_init_super_ddf, |
0e600426 | 3906 | .add_to_super = add_to_super_ddf, |
4dd968cc | 3907 | .remove_from_super = remove_from_super_ddf, |
2b959fbf | 3908 | .load_container = load_container_ddf, |
a322f70c DW |
3909 | #endif |
3910 | .match_home = match_home_ddf, | |
3911 | .uuid_from_super= uuid_from_super_ddf, | |
3912 | .getinfo_super = getinfo_super_ddf, | |
3913 | .update_super = update_super_ddf, | |
3914 | ||
3915 | .avail_size = avail_size_ddf, | |
3916 | ||
a19c88b8 NB |
3917 | .compare_super = compare_super_ddf, |
3918 | ||
a322f70c | 3919 | .load_super = load_super_ddf, |
ba7eb04f | 3920 | .init_super = init_super_ddf, |
955e9ea1 | 3921 | .store_super = store_super_ddf, |
a322f70c DW |
3922 | .free_super = free_super_ddf, |
3923 | .match_metadata_desc = match_metadata_desc_ddf, | |
78e44928 | 3924 | .container_content = container_content_ddf, |
30f58b22 | 3925 | .default_geometry = default_geometry_ddf, |
a322f70c | 3926 | |
a322f70c | 3927 | .external = 1, |
549e9569 | 3928 | |
0e600426 | 3929 | #ifndef MDASSEMBLE |
549e9569 NB |
3930 | /* for mdmon */ |
3931 | .open_new = ddf_open_new, | |
ed9d66aa | 3932 | .set_array_state= ddf_set_array_state, |
549e9569 NB |
3933 | .set_disk = ddf_set_disk, |
3934 | .sync_metadata = ddf_sync_metadata, | |
88c164f4 | 3935 | .process_update = ddf_process_update, |
edd8d13c | 3936 | .prepare_update = ddf_prepare_update, |
7e1432fb | 3937 | .activate_spare = ddf_activate_spare, |
0e600426 | 3938 | #endif |
4cce4069 | 3939 | .name = "ddf", |
a322f70c | 3940 | }; |