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Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
f24e9980 | 2 | |
3d14c5d2 | 3 | #include <linux/ceph/ceph_debug.h> |
5a0e3ad6 | 4 | |
3d14c5d2 | 5 | #include <linux/module.h> |
5a0e3ad6 | 6 | #include <linux/slab.h> |
f24e9980 | 7 | |
3d14c5d2 YS |
8 | #include <linux/ceph/libceph.h> |
9 | #include <linux/ceph/osdmap.h> | |
10 | #include <linux/ceph/decode.h> | |
11 | #include <linux/crush/hash.h> | |
12 | #include <linux/crush/mapper.h> | |
f24e9980 | 13 | |
0bb05da2 | 14 | char *ceph_osdmap_state_str(char *str, int len, u32 state) |
f24e9980 | 15 | { |
f24e9980 | 16 | if (!len) |
1ec3911d | 17 | return str; |
f24e9980 | 18 | |
1ec3911d CD |
19 | if ((state & CEPH_OSD_EXISTS) && (state & CEPH_OSD_UP)) |
20 | snprintf(str, len, "exists, up"); | |
21 | else if (state & CEPH_OSD_EXISTS) | |
22 | snprintf(str, len, "exists"); | |
23 | else if (state & CEPH_OSD_UP) | |
24 | snprintf(str, len, "up"); | |
25 | else | |
f24e9980 | 26 | snprintf(str, len, "doesn't exist"); |
1ec3911d | 27 | |
f24e9980 SW |
28 | return str; |
29 | } | |
30 | ||
31 | /* maps */ | |
32 | ||
95c96174 | 33 | static int calc_bits_of(unsigned int t) |
f24e9980 SW |
34 | { |
35 | int b = 0; | |
36 | while (t) { | |
37 | t = t >> 1; | |
38 | b++; | |
39 | } | |
40 | return b; | |
41 | } | |
42 | ||
43 | /* | |
44 | * the foo_mask is the smallest value 2^n-1 that is >= foo. | |
45 | */ | |
46 | static void calc_pg_masks(struct ceph_pg_pool_info *pi) | |
47 | { | |
4f6a7e5e SW |
48 | pi->pg_num_mask = (1 << calc_bits_of(pi->pg_num-1)) - 1; |
49 | pi->pgp_num_mask = (1 << calc_bits_of(pi->pgp_num-1)) - 1; | |
f24e9980 SW |
50 | } |
51 | ||
52 | /* | |
53 | * decode crush map | |
54 | */ | |
55 | static int crush_decode_uniform_bucket(void **p, void *end, | |
56 | struct crush_bucket_uniform *b) | |
57 | { | |
58 | dout("crush_decode_uniform_bucket %p to %p\n", *p, end); | |
59 | ceph_decode_need(p, end, (1+b->h.size) * sizeof(u32), bad); | |
c89136ea | 60 | b->item_weight = ceph_decode_32(p); |
f24e9980 SW |
61 | return 0; |
62 | bad: | |
63 | return -EINVAL; | |
64 | } | |
65 | ||
66 | static int crush_decode_list_bucket(void **p, void *end, | |
67 | struct crush_bucket_list *b) | |
68 | { | |
69 | int j; | |
70 | dout("crush_decode_list_bucket %p to %p\n", *p, end); | |
71 | b->item_weights = kcalloc(b->h.size, sizeof(u32), GFP_NOFS); | |
72 | if (b->item_weights == NULL) | |
73 | return -ENOMEM; | |
74 | b->sum_weights = kcalloc(b->h.size, sizeof(u32), GFP_NOFS); | |
75 | if (b->sum_weights == NULL) | |
76 | return -ENOMEM; | |
77 | ceph_decode_need(p, end, 2 * b->h.size * sizeof(u32), bad); | |
78 | for (j = 0; j < b->h.size; j++) { | |
c89136ea SW |
79 | b->item_weights[j] = ceph_decode_32(p); |
80 | b->sum_weights[j] = ceph_decode_32(p); | |
f24e9980 SW |
81 | } |
82 | return 0; | |
83 | bad: | |
84 | return -EINVAL; | |
85 | } | |
86 | ||
87 | static int crush_decode_tree_bucket(void **p, void *end, | |
88 | struct crush_bucket_tree *b) | |
89 | { | |
90 | int j; | |
91 | dout("crush_decode_tree_bucket %p to %p\n", *p, end); | |
82cd003a | 92 | ceph_decode_8_safe(p, end, b->num_nodes, bad); |
f24e9980 SW |
93 | b->node_weights = kcalloc(b->num_nodes, sizeof(u32), GFP_NOFS); |
94 | if (b->node_weights == NULL) | |
95 | return -ENOMEM; | |
96 | ceph_decode_need(p, end, b->num_nodes * sizeof(u32), bad); | |
97 | for (j = 0; j < b->num_nodes; j++) | |
c89136ea | 98 | b->node_weights[j] = ceph_decode_32(p); |
f24e9980 SW |
99 | return 0; |
100 | bad: | |
101 | return -EINVAL; | |
102 | } | |
103 | ||
104 | static int crush_decode_straw_bucket(void **p, void *end, | |
105 | struct crush_bucket_straw *b) | |
106 | { | |
107 | int j; | |
108 | dout("crush_decode_straw_bucket %p to %p\n", *p, end); | |
109 | b->item_weights = kcalloc(b->h.size, sizeof(u32), GFP_NOFS); | |
110 | if (b->item_weights == NULL) | |
111 | return -ENOMEM; | |
112 | b->straws = kcalloc(b->h.size, sizeof(u32), GFP_NOFS); | |
113 | if (b->straws == NULL) | |
114 | return -ENOMEM; | |
115 | ceph_decode_need(p, end, 2 * b->h.size * sizeof(u32), bad); | |
116 | for (j = 0; j < b->h.size; j++) { | |
c89136ea SW |
117 | b->item_weights[j] = ceph_decode_32(p); |
118 | b->straws[j] = ceph_decode_32(p); | |
f24e9980 SW |
119 | } |
120 | return 0; | |
121 | bad: | |
122 | return -EINVAL; | |
123 | } | |
124 | ||
958a2765 ID |
125 | static int crush_decode_straw2_bucket(void **p, void *end, |
126 | struct crush_bucket_straw2 *b) | |
127 | { | |
128 | int j; | |
129 | dout("crush_decode_straw2_bucket %p to %p\n", *p, end); | |
130 | b->item_weights = kcalloc(b->h.size, sizeof(u32), GFP_NOFS); | |
131 | if (b->item_weights == NULL) | |
132 | return -ENOMEM; | |
133 | ceph_decode_need(p, end, b->h.size * sizeof(u32), bad); | |
134 | for (j = 0; j < b->h.size; j++) | |
135 | b->item_weights[j] = ceph_decode_32(p); | |
136 | return 0; | |
137 | bad: | |
138 | return -EINVAL; | |
139 | } | |
140 | ||
5cf9c4a9 ID |
141 | static struct crush_choose_arg_map *alloc_choose_arg_map(void) |
142 | { | |
143 | struct crush_choose_arg_map *arg_map; | |
144 | ||
145 | arg_map = kzalloc(sizeof(*arg_map), GFP_NOIO); | |
146 | if (!arg_map) | |
147 | return NULL; | |
148 | ||
149 | RB_CLEAR_NODE(&arg_map->node); | |
150 | return arg_map; | |
151 | } | |
152 | ||
153 | static void free_choose_arg_map(struct crush_choose_arg_map *arg_map) | |
154 | { | |
155 | if (arg_map) { | |
156 | int i, j; | |
157 | ||
158 | WARN_ON(!RB_EMPTY_NODE(&arg_map->node)); | |
159 | ||
160 | for (i = 0; i < arg_map->size; i++) { | |
161 | struct crush_choose_arg *arg = &arg_map->args[i]; | |
162 | ||
163 | for (j = 0; j < arg->weight_set_size; j++) | |
164 | kfree(arg->weight_set[j].weights); | |
165 | kfree(arg->weight_set); | |
166 | kfree(arg->ids); | |
167 | } | |
168 | kfree(arg_map->args); | |
169 | kfree(arg_map); | |
170 | } | |
171 | } | |
172 | ||
173 | DEFINE_RB_FUNCS(choose_arg_map, struct crush_choose_arg_map, choose_args_index, | |
174 | node); | |
175 | ||
176 | void clear_choose_args(struct crush_map *c) | |
177 | { | |
178 | while (!RB_EMPTY_ROOT(&c->choose_args)) { | |
179 | struct crush_choose_arg_map *arg_map = | |
180 | rb_entry(rb_first(&c->choose_args), | |
181 | struct crush_choose_arg_map, node); | |
182 | ||
183 | erase_choose_arg_map(&c->choose_args, arg_map); | |
184 | free_choose_arg_map(arg_map); | |
185 | } | |
186 | } | |
187 | ||
188 | static u32 *decode_array_32_alloc(void **p, void *end, u32 *plen) | |
189 | { | |
190 | u32 *a = NULL; | |
191 | u32 len; | |
192 | int ret; | |
193 | ||
194 | ceph_decode_32_safe(p, end, len, e_inval); | |
195 | if (len) { | |
196 | u32 i; | |
197 | ||
198 | a = kmalloc_array(len, sizeof(u32), GFP_NOIO); | |
199 | if (!a) { | |
200 | ret = -ENOMEM; | |
201 | goto fail; | |
202 | } | |
203 | ||
204 | ceph_decode_need(p, end, len * sizeof(u32), e_inval); | |
205 | for (i = 0; i < len; i++) | |
206 | a[i] = ceph_decode_32(p); | |
207 | } | |
208 | ||
209 | *plen = len; | |
210 | return a; | |
211 | ||
212 | e_inval: | |
213 | ret = -EINVAL; | |
214 | fail: | |
215 | kfree(a); | |
216 | return ERR_PTR(ret); | |
217 | } | |
218 | ||
219 | /* | |
220 | * Assumes @arg is zero-initialized. | |
221 | */ | |
222 | static int decode_choose_arg(void **p, void *end, struct crush_choose_arg *arg) | |
223 | { | |
224 | int ret; | |
225 | ||
226 | ceph_decode_32_safe(p, end, arg->weight_set_size, e_inval); | |
227 | if (arg->weight_set_size) { | |
228 | u32 i; | |
229 | ||
230 | arg->weight_set = kmalloc_array(arg->weight_set_size, | |
231 | sizeof(*arg->weight_set), | |
232 | GFP_NOIO); | |
233 | if (!arg->weight_set) | |
234 | return -ENOMEM; | |
235 | ||
236 | for (i = 0; i < arg->weight_set_size; i++) { | |
237 | struct crush_weight_set *w = &arg->weight_set[i]; | |
238 | ||
239 | w->weights = decode_array_32_alloc(p, end, &w->size); | |
240 | if (IS_ERR(w->weights)) { | |
241 | ret = PTR_ERR(w->weights); | |
242 | w->weights = NULL; | |
243 | return ret; | |
244 | } | |
245 | } | |
246 | } | |
247 | ||
248 | arg->ids = decode_array_32_alloc(p, end, &arg->ids_size); | |
249 | if (IS_ERR(arg->ids)) { | |
250 | ret = PTR_ERR(arg->ids); | |
251 | arg->ids = NULL; | |
252 | return ret; | |
253 | } | |
254 | ||
255 | return 0; | |
256 | ||
257 | e_inval: | |
258 | return -EINVAL; | |
259 | } | |
260 | ||
261 | static int decode_choose_args(void **p, void *end, struct crush_map *c) | |
262 | { | |
263 | struct crush_choose_arg_map *arg_map = NULL; | |
264 | u32 num_choose_arg_maps, num_buckets; | |
265 | int ret; | |
266 | ||
267 | ceph_decode_32_safe(p, end, num_choose_arg_maps, e_inval); | |
268 | while (num_choose_arg_maps--) { | |
269 | arg_map = alloc_choose_arg_map(); | |
270 | if (!arg_map) { | |
271 | ret = -ENOMEM; | |
272 | goto fail; | |
273 | } | |
274 | ||
275 | ceph_decode_64_safe(p, end, arg_map->choose_args_index, | |
276 | e_inval); | |
277 | arg_map->size = c->max_buckets; | |
278 | arg_map->args = kcalloc(arg_map->size, sizeof(*arg_map->args), | |
279 | GFP_NOIO); | |
280 | if (!arg_map->args) { | |
281 | ret = -ENOMEM; | |
282 | goto fail; | |
283 | } | |
284 | ||
285 | ceph_decode_32_safe(p, end, num_buckets, e_inval); | |
286 | while (num_buckets--) { | |
287 | struct crush_choose_arg *arg; | |
288 | u32 bucket_index; | |
289 | ||
290 | ceph_decode_32_safe(p, end, bucket_index, e_inval); | |
291 | if (bucket_index >= arg_map->size) | |
292 | goto e_inval; | |
293 | ||
294 | arg = &arg_map->args[bucket_index]; | |
295 | ret = decode_choose_arg(p, end, arg); | |
296 | if (ret) | |
297 | goto fail; | |
c7ed1a4b ID |
298 | |
299 | if (arg->ids_size && | |
300 | arg->ids_size != c->buckets[bucket_index]->size) | |
301 | goto e_inval; | |
5cf9c4a9 ID |
302 | } |
303 | ||
304 | insert_choose_arg_map(&c->choose_args, arg_map); | |
305 | } | |
306 | ||
307 | return 0; | |
308 | ||
309 | e_inval: | |
310 | ret = -EINVAL; | |
311 | fail: | |
312 | free_choose_arg_map(arg_map); | |
313 | return ret; | |
314 | } | |
315 | ||
66a0e2d5 ID |
316 | static void crush_finalize(struct crush_map *c) |
317 | { | |
318 | __s32 b; | |
319 | ||
320 | /* Space for the array of pointers to per-bucket workspace */ | |
321 | c->working_size = sizeof(struct crush_work) + | |
322 | c->max_buckets * sizeof(struct crush_work_bucket *); | |
323 | ||
324 | for (b = 0; b < c->max_buckets; b++) { | |
325 | if (!c->buckets[b]) | |
326 | continue; | |
327 | ||
328 | switch (c->buckets[b]->alg) { | |
329 | default: | |
330 | /* | |
331 | * The base case, permutation variables and | |
332 | * the pointer to the permutation array. | |
333 | */ | |
334 | c->working_size += sizeof(struct crush_work_bucket); | |
335 | break; | |
336 | } | |
337 | /* Every bucket has a permutation array. */ | |
338 | c->working_size += c->buckets[b]->size * sizeof(__u32); | |
339 | } | |
340 | } | |
341 | ||
f24e9980 SW |
342 | static struct crush_map *crush_decode(void *pbyval, void *end) |
343 | { | |
344 | struct crush_map *c; | |
c2acfd95 | 345 | int err; |
f24e9980 SW |
346 | int i, j; |
347 | void **p = &pbyval; | |
348 | void *start = pbyval; | |
349 | u32 magic; | |
350 | ||
351 | dout("crush_decode %p to %p len %d\n", *p, end, (int)(end - *p)); | |
352 | ||
353 | c = kzalloc(sizeof(*c), GFP_NOFS); | |
354 | if (c == NULL) | |
355 | return ERR_PTR(-ENOMEM); | |
356 | ||
5cf9c4a9 ID |
357 | c->choose_args = RB_ROOT; |
358 | ||
546f04ef SW |
359 | /* set tunables to default values */ |
360 | c->choose_local_tries = 2; | |
361 | c->choose_local_fallback_tries = 5; | |
362 | c->choose_total_tries = 19; | |
1604f488 | 363 | c->chooseleaf_descend_once = 0; |
546f04ef | 364 | |
f24e9980 | 365 | ceph_decode_need(p, end, 4*sizeof(u32), bad); |
c89136ea | 366 | magic = ceph_decode_32(p); |
f24e9980 SW |
367 | if (magic != CRUSH_MAGIC) { |
368 | pr_err("crush_decode magic %x != current %x\n", | |
95c96174 | 369 | (unsigned int)magic, (unsigned int)CRUSH_MAGIC); |
f24e9980 SW |
370 | goto bad; |
371 | } | |
c89136ea SW |
372 | c->max_buckets = ceph_decode_32(p); |
373 | c->max_rules = ceph_decode_32(p); | |
374 | c->max_devices = ceph_decode_32(p); | |
f24e9980 | 375 | |
f24e9980 SW |
376 | c->buckets = kcalloc(c->max_buckets, sizeof(*c->buckets), GFP_NOFS); |
377 | if (c->buckets == NULL) | |
378 | goto badmem; | |
379 | c->rules = kcalloc(c->max_rules, sizeof(*c->rules), GFP_NOFS); | |
380 | if (c->rules == NULL) | |
381 | goto badmem; | |
382 | ||
383 | /* buckets */ | |
384 | for (i = 0; i < c->max_buckets; i++) { | |
385 | int size = 0; | |
386 | u32 alg; | |
387 | struct crush_bucket *b; | |
388 | ||
389 | ceph_decode_32_safe(p, end, alg, bad); | |
390 | if (alg == 0) { | |
391 | c->buckets[i] = NULL; | |
392 | continue; | |
393 | } | |
394 | dout("crush_decode bucket %d off %x %p to %p\n", | |
395 | i, (int)(*p-start), *p, end); | |
396 | ||
397 | switch (alg) { | |
398 | case CRUSH_BUCKET_UNIFORM: | |
399 | size = sizeof(struct crush_bucket_uniform); | |
400 | break; | |
401 | case CRUSH_BUCKET_LIST: | |
402 | size = sizeof(struct crush_bucket_list); | |
403 | break; | |
404 | case CRUSH_BUCKET_TREE: | |
405 | size = sizeof(struct crush_bucket_tree); | |
406 | break; | |
407 | case CRUSH_BUCKET_STRAW: | |
408 | size = sizeof(struct crush_bucket_straw); | |
409 | break; | |
958a2765 ID |
410 | case CRUSH_BUCKET_STRAW2: |
411 | size = sizeof(struct crush_bucket_straw2); | |
412 | break; | |
f24e9980 SW |
413 | default: |
414 | goto bad; | |
415 | } | |
416 | BUG_ON(size == 0); | |
417 | b = c->buckets[i] = kzalloc(size, GFP_NOFS); | |
418 | if (b == NULL) | |
419 | goto badmem; | |
420 | ||
421 | ceph_decode_need(p, end, 4*sizeof(u32), bad); | |
c89136ea SW |
422 | b->id = ceph_decode_32(p); |
423 | b->type = ceph_decode_16(p); | |
fb690390 SW |
424 | b->alg = ceph_decode_8(p); |
425 | b->hash = ceph_decode_8(p); | |
c89136ea SW |
426 | b->weight = ceph_decode_32(p); |
427 | b->size = ceph_decode_32(p); | |
f24e9980 SW |
428 | |
429 | dout("crush_decode bucket size %d off %x %p to %p\n", | |
430 | b->size, (int)(*p-start), *p, end); | |
431 | ||
432 | b->items = kcalloc(b->size, sizeof(__s32), GFP_NOFS); | |
433 | if (b->items == NULL) | |
434 | goto badmem; | |
f24e9980 SW |
435 | |
436 | ceph_decode_need(p, end, b->size*sizeof(u32), bad); | |
437 | for (j = 0; j < b->size; j++) | |
c89136ea | 438 | b->items[j] = ceph_decode_32(p); |
f24e9980 SW |
439 | |
440 | switch (b->alg) { | |
441 | case CRUSH_BUCKET_UNIFORM: | |
442 | err = crush_decode_uniform_bucket(p, end, | |
443 | (struct crush_bucket_uniform *)b); | |
444 | if (err < 0) | |
c2acfd95 | 445 | goto fail; |
f24e9980 SW |
446 | break; |
447 | case CRUSH_BUCKET_LIST: | |
448 | err = crush_decode_list_bucket(p, end, | |
449 | (struct crush_bucket_list *)b); | |
450 | if (err < 0) | |
c2acfd95 | 451 | goto fail; |
f24e9980 SW |
452 | break; |
453 | case CRUSH_BUCKET_TREE: | |
454 | err = crush_decode_tree_bucket(p, end, | |
455 | (struct crush_bucket_tree *)b); | |
456 | if (err < 0) | |
c2acfd95 | 457 | goto fail; |
f24e9980 SW |
458 | break; |
459 | case CRUSH_BUCKET_STRAW: | |
460 | err = crush_decode_straw_bucket(p, end, | |
461 | (struct crush_bucket_straw *)b); | |
462 | if (err < 0) | |
c2acfd95 | 463 | goto fail; |
f24e9980 | 464 | break; |
958a2765 ID |
465 | case CRUSH_BUCKET_STRAW2: |
466 | err = crush_decode_straw2_bucket(p, end, | |
467 | (struct crush_bucket_straw2 *)b); | |
468 | if (err < 0) | |
c2acfd95 | 469 | goto fail; |
958a2765 | 470 | break; |
f24e9980 SW |
471 | } |
472 | } | |
473 | ||
474 | /* rules */ | |
475 | dout("rule vec is %p\n", c->rules); | |
476 | for (i = 0; i < c->max_rules; i++) { | |
477 | u32 yes; | |
478 | struct crush_rule *r; | |
479 | ||
480 | ceph_decode_32_safe(p, end, yes, bad); | |
481 | if (!yes) { | |
482 | dout("crush_decode NO rule %d off %x %p to %p\n", | |
483 | i, (int)(*p-start), *p, end); | |
484 | c->rules[i] = NULL; | |
485 | continue; | |
486 | } | |
487 | ||
488 | dout("crush_decode rule %d off %x %p to %p\n", | |
489 | i, (int)(*p-start), *p, end); | |
490 | ||
491 | /* len */ | |
492 | ceph_decode_32_safe(p, end, yes, bad); | |
493 | #if BITS_PER_LONG == 32 | |
64486697 XW |
494 | if (yes > (ULONG_MAX - sizeof(*r)) |
495 | / sizeof(struct crush_rule_step)) | |
f24e9980 SW |
496 | goto bad; |
497 | #endif | |
498 | r = c->rules[i] = kmalloc(sizeof(*r) + | |
499 | yes*sizeof(struct crush_rule_step), | |
500 | GFP_NOFS); | |
501 | if (r == NULL) | |
502 | goto badmem; | |
503 | dout(" rule %d is at %p\n", i, r); | |
504 | r->len = yes; | |
505 | ceph_decode_copy_safe(p, end, &r->mask, 4, bad); /* 4 u8's */ | |
506 | ceph_decode_need(p, end, r->len*3*sizeof(u32), bad); | |
507 | for (j = 0; j < r->len; j++) { | |
c89136ea SW |
508 | r->steps[j].op = ceph_decode_32(p); |
509 | r->steps[j].arg1 = ceph_decode_32(p); | |
510 | r->steps[j].arg2 = ceph_decode_32(p); | |
f24e9980 SW |
511 | } |
512 | } | |
513 | ||
278b1d70 ID |
514 | ceph_decode_skip_map(p, end, 32, string, bad); /* type_map */ |
515 | ceph_decode_skip_map(p, end, 32, string, bad); /* name_map */ | |
516 | ceph_decode_skip_map(p, end, 32, string, bad); /* rule_name_map */ | |
546f04ef SW |
517 | |
518 | /* tunables */ | |
519 | ceph_decode_need(p, end, 3*sizeof(u32), done); | |
520 | c->choose_local_tries = ceph_decode_32(p); | |
521 | c->choose_local_fallback_tries = ceph_decode_32(p); | |
522 | c->choose_total_tries = ceph_decode_32(p); | |
b9b519b7 | 523 | dout("crush decode tunable choose_local_tries = %d\n", |
546f04ef | 524 | c->choose_local_tries); |
b9b519b7 | 525 | dout("crush decode tunable choose_local_fallback_tries = %d\n", |
546f04ef | 526 | c->choose_local_fallback_tries); |
b9b519b7 | 527 | dout("crush decode tunable choose_total_tries = %d\n", |
546f04ef | 528 | c->choose_total_tries); |
f24e9980 | 529 | |
1604f488 JS |
530 | ceph_decode_need(p, end, sizeof(u32), done); |
531 | c->chooseleaf_descend_once = ceph_decode_32(p); | |
b9b519b7 | 532 | dout("crush decode tunable chooseleaf_descend_once = %d\n", |
1604f488 JS |
533 | c->chooseleaf_descend_once); |
534 | ||
f140662f ID |
535 | ceph_decode_need(p, end, sizeof(u8), done); |
536 | c->chooseleaf_vary_r = ceph_decode_8(p); | |
b9b519b7 | 537 | dout("crush decode tunable chooseleaf_vary_r = %d\n", |
f140662f ID |
538 | c->chooseleaf_vary_r); |
539 | ||
b9b519b7 ID |
540 | /* skip straw_calc_version, allowed_bucket_algs */ |
541 | ceph_decode_need(p, end, sizeof(u8) + sizeof(u32), done); | |
542 | *p += sizeof(u8) + sizeof(u32); | |
543 | ||
544 | ceph_decode_need(p, end, sizeof(u8), done); | |
545 | c->chooseleaf_stable = ceph_decode_8(p); | |
546 | dout("crush decode tunable chooseleaf_stable = %d\n", | |
547 | c->chooseleaf_stable); | |
548 | ||
5cf9c4a9 ID |
549 | if (*p != end) { |
550 | /* class_map */ | |
551 | ceph_decode_skip_map(p, end, 32, 32, bad); | |
552 | /* class_name */ | |
553 | ceph_decode_skip_map(p, end, 32, string, bad); | |
554 | /* class_bucket */ | |
555 | ceph_decode_skip_map_of_map(p, end, 32, 32, 32, bad); | |
556 | } | |
557 | ||
558 | if (*p != end) { | |
559 | err = decode_choose_args(p, end, c); | |
560 | if (err) | |
c2acfd95 | 561 | goto fail; |
5cf9c4a9 ID |
562 | } |
563 | ||
546f04ef | 564 | done: |
9afd30db | 565 | crush_finalize(c); |
f24e9980 SW |
566 | dout("crush_decode success\n"); |
567 | return c; | |
568 | ||
569 | badmem: | |
570 | err = -ENOMEM; | |
c2acfd95 | 571 | fail: |
f24e9980 SW |
572 | dout("crush_decode fail %d\n", err); |
573 | crush_destroy(c); | |
574 | return ERR_PTR(err); | |
c2acfd95 ID |
575 | |
576 | bad: | |
577 | err = -EINVAL; | |
578 | goto fail; | |
f24e9980 SW |
579 | } |
580 | ||
f984cb76 | 581 | int ceph_pg_compare(const struct ceph_pg *lhs, const struct ceph_pg *rhs) |
51042122 | 582 | { |
f984cb76 | 583 | if (lhs->pool < rhs->pool) |
5b191d99 | 584 | return -1; |
f984cb76 | 585 | if (lhs->pool > rhs->pool) |
5b191d99 | 586 | return 1; |
f984cb76 | 587 | if (lhs->seed < rhs->seed) |
51042122 | 588 | return -1; |
f984cb76 | 589 | if (lhs->seed > rhs->seed) |
51042122 | 590 | return 1; |
f984cb76 | 591 | |
51042122 SW |
592 | return 0; |
593 | } | |
594 | ||
a02a946d ID |
595 | int ceph_spg_compare(const struct ceph_spg *lhs, const struct ceph_spg *rhs) |
596 | { | |
597 | int ret; | |
598 | ||
599 | ret = ceph_pg_compare(&lhs->pgid, &rhs->pgid); | |
600 | if (ret) | |
601 | return ret; | |
602 | ||
603 | if (lhs->shard < rhs->shard) | |
604 | return -1; | |
605 | if (lhs->shard > rhs->shard) | |
606 | return 1; | |
607 | ||
608 | return 0; | |
609 | } | |
610 | ||
a303bb0e ID |
611 | static struct ceph_pg_mapping *alloc_pg_mapping(size_t payload_len) |
612 | { | |
613 | struct ceph_pg_mapping *pg; | |
614 | ||
615 | pg = kmalloc(sizeof(*pg) + payload_len, GFP_NOIO); | |
616 | if (!pg) | |
617 | return NULL; | |
618 | ||
619 | RB_CLEAR_NODE(&pg->node); | |
620 | return pg; | |
621 | } | |
622 | ||
623 | static void free_pg_mapping(struct ceph_pg_mapping *pg) | |
624 | { | |
625 | WARN_ON(!RB_EMPTY_NODE(&pg->node)); | |
626 | ||
627 | kfree(pg); | |
628 | } | |
629 | ||
f984cb76 ID |
630 | /* |
631 | * rbtree of pg_mapping for handling pg_temp (explicit mapping of pgid | |
632 | * to a set of osds) and primary_temp (explicit primary setting) | |
633 | */ | |
ab75144b ID |
634 | DEFINE_RB_FUNCS2(pg_mapping, struct ceph_pg_mapping, pgid, ceph_pg_compare, |
635 | RB_BYPTR, const struct ceph_pg *, node) | |
8adc8b3d | 636 | |
4fc51be8 SW |
637 | /* |
638 | * rbtree of pg pool info | |
639 | */ | |
640 | static int __insert_pg_pool(struct rb_root *root, struct ceph_pg_pool_info *new) | |
641 | { | |
642 | struct rb_node **p = &root->rb_node; | |
643 | struct rb_node *parent = NULL; | |
644 | struct ceph_pg_pool_info *pi = NULL; | |
645 | ||
646 | while (*p) { | |
647 | parent = *p; | |
648 | pi = rb_entry(parent, struct ceph_pg_pool_info, node); | |
649 | if (new->id < pi->id) | |
650 | p = &(*p)->rb_left; | |
651 | else if (new->id > pi->id) | |
652 | p = &(*p)->rb_right; | |
653 | else | |
654 | return -EEXIST; | |
655 | } | |
656 | ||
657 | rb_link_node(&new->node, parent, p); | |
658 | rb_insert_color(&new->node, root); | |
659 | return 0; | |
660 | } | |
661 | ||
4f6a7e5e | 662 | static struct ceph_pg_pool_info *__lookup_pg_pool(struct rb_root *root, u64 id) |
4fc51be8 SW |
663 | { |
664 | struct ceph_pg_pool_info *pi; | |
665 | struct rb_node *n = root->rb_node; | |
666 | ||
667 | while (n) { | |
668 | pi = rb_entry(n, struct ceph_pg_pool_info, node); | |
669 | if (id < pi->id) | |
670 | n = n->rb_left; | |
671 | else if (id > pi->id) | |
672 | n = n->rb_right; | |
673 | else | |
674 | return pi; | |
675 | } | |
676 | return NULL; | |
677 | } | |
678 | ||
ce7f6a27 ID |
679 | struct ceph_pg_pool_info *ceph_pg_pool_by_id(struct ceph_osdmap *map, u64 id) |
680 | { | |
681 | return __lookup_pg_pool(&map->pg_pools, id); | |
682 | } | |
683 | ||
72afc71f AE |
684 | const char *ceph_pg_pool_name_by_id(struct ceph_osdmap *map, u64 id) |
685 | { | |
686 | struct ceph_pg_pool_info *pi; | |
687 | ||
688 | if (id == CEPH_NOPOOL) | |
689 | return NULL; | |
690 | ||
691 | if (WARN_ON_ONCE(id > (u64) INT_MAX)) | |
692 | return NULL; | |
693 | ||
694 | pi = __lookup_pg_pool(&map->pg_pools, (int) id); | |
695 | ||
696 | return pi ? pi->name : NULL; | |
697 | } | |
698 | EXPORT_SYMBOL(ceph_pg_pool_name_by_id); | |
699 | ||
7669a2c9 YS |
700 | int ceph_pg_poolid_by_name(struct ceph_osdmap *map, const char *name) |
701 | { | |
702 | struct rb_node *rbp; | |
703 | ||
704 | for (rbp = rb_first(&map->pg_pools); rbp; rbp = rb_next(rbp)) { | |
705 | struct ceph_pg_pool_info *pi = | |
706 | rb_entry(rbp, struct ceph_pg_pool_info, node); | |
707 | if (pi->name && strcmp(pi->name, name) == 0) | |
708 | return pi->id; | |
709 | } | |
710 | return -ENOENT; | |
711 | } | |
3d14c5d2 | 712 | EXPORT_SYMBOL(ceph_pg_poolid_by_name); |
7669a2c9 | 713 | |
2844a76a SW |
714 | static void __remove_pg_pool(struct rb_root *root, struct ceph_pg_pool_info *pi) |
715 | { | |
716 | rb_erase(&pi->node, root); | |
717 | kfree(pi->name); | |
718 | kfree(pi); | |
719 | } | |
720 | ||
0f70c7ee | 721 | static int decode_pool(void **p, void *end, struct ceph_pg_pool_info *pi) |
efd7576b | 722 | { |
4f6a7e5e SW |
723 | u8 ev, cv; |
724 | unsigned len, num; | |
725 | void *pool_end; | |
726 | ||
727 | ceph_decode_need(p, end, 2 + 4, bad); | |
728 | ev = ceph_decode_8(p); /* encoding version */ | |
729 | cv = ceph_decode_8(p); /* compat version */ | |
730 | if (ev < 5) { | |
b9a67899 | 731 | pr_warn("got v %d < 5 cv %d of ceph_pg_pool\n", ev, cv); |
4f6a7e5e SW |
732 | return -EINVAL; |
733 | } | |
17a13e40 | 734 | if (cv > 9) { |
b9a67899 | 735 | pr_warn("got v %d cv %d > 9 of ceph_pg_pool\n", ev, cv); |
4f6a7e5e SW |
736 | return -EINVAL; |
737 | } | |
738 | len = ceph_decode_32(p); | |
739 | ceph_decode_need(p, end, len, bad); | |
740 | pool_end = *p + len; | |
73a7e693 | 741 | |
4f6a7e5e SW |
742 | pi->type = ceph_decode_8(p); |
743 | pi->size = ceph_decode_8(p); | |
744 | pi->crush_ruleset = ceph_decode_8(p); | |
745 | pi->object_hash = ceph_decode_8(p); | |
73a7e693 | 746 | |
4f6a7e5e SW |
747 | pi->pg_num = ceph_decode_32(p); |
748 | pi->pgp_num = ceph_decode_32(p); | |
749 | ||
750 | *p += 4 + 4; /* skip lpg* */ | |
751 | *p += 4; /* skip last_change */ | |
752 | *p += 8 + 4; /* skip snap_seq, snap_epoch */ | |
753 | ||
754 | /* skip snaps */ | |
755 | num = ceph_decode_32(p); | |
756 | while (num--) { | |
757 | *p += 8; /* snapid key */ | |
758 | *p += 1 + 1; /* versions */ | |
759 | len = ceph_decode_32(p); | |
760 | *p += len; | |
73a7e693 SW |
761 | } |
762 | ||
17a13e40 | 763 | /* skip removed_snaps */ |
4f6a7e5e SW |
764 | num = ceph_decode_32(p); |
765 | *p += num * (8 + 8); | |
766 | ||
767 | *p += 8; /* skip auid */ | |
768 | pi->flags = ceph_decode_64(p); | |
17a13e40 ID |
769 | *p += 4; /* skip crash_replay_interval */ |
770 | ||
771 | if (ev >= 7) | |
04812acf ID |
772 | pi->min_size = ceph_decode_8(p); |
773 | else | |
774 | pi->min_size = pi->size - pi->size / 2; | |
17a13e40 ID |
775 | |
776 | if (ev >= 8) | |
777 | *p += 8 + 8; /* skip quota_max_* */ | |
778 | ||
779 | if (ev >= 9) { | |
780 | /* skip tiers */ | |
781 | num = ceph_decode_32(p); | |
782 | *p += num * 8; | |
783 | ||
784 | *p += 8; /* skip tier_of */ | |
785 | *p += 1; /* skip cache_mode */ | |
786 | ||
787 | pi->read_tier = ceph_decode_64(p); | |
788 | pi->write_tier = ceph_decode_64(p); | |
789 | } else { | |
790 | pi->read_tier = -1; | |
791 | pi->write_tier = -1; | |
792 | } | |
4f6a7e5e | 793 | |
04812acf ID |
794 | if (ev >= 10) { |
795 | /* skip properties */ | |
796 | num = ceph_decode_32(p); | |
797 | while (num--) { | |
798 | len = ceph_decode_32(p); | |
799 | *p += len; /* key */ | |
800 | len = ceph_decode_32(p); | |
801 | *p += len; /* val */ | |
802 | } | |
803 | } | |
804 | ||
805 | if (ev >= 11) { | |
806 | /* skip hit_set_params */ | |
807 | *p += 1 + 1; /* versions */ | |
808 | len = ceph_decode_32(p); | |
809 | *p += len; | |
810 | ||
811 | *p += 4; /* skip hit_set_period */ | |
812 | *p += 4; /* skip hit_set_count */ | |
813 | } | |
814 | ||
815 | if (ev >= 12) | |
816 | *p += 4; /* skip stripe_width */ | |
817 | ||
818 | if (ev >= 13) { | |
819 | *p += 8; /* skip target_max_bytes */ | |
820 | *p += 8; /* skip target_max_objects */ | |
821 | *p += 4; /* skip cache_target_dirty_ratio_micro */ | |
822 | *p += 4; /* skip cache_target_full_ratio_micro */ | |
823 | *p += 4; /* skip cache_min_flush_age */ | |
824 | *p += 4; /* skip cache_min_evict_age */ | |
825 | } | |
826 | ||
827 | if (ev >= 14) { | |
828 | /* skip erasure_code_profile */ | |
829 | len = ceph_decode_32(p); | |
830 | *p += len; | |
831 | } | |
832 | ||
8e48cf00 ID |
833 | /* |
834 | * last_force_op_resend_preluminous, will be overridden if the | |
835 | * map was encoded with RESEND_ON_SPLIT | |
836 | */ | |
04812acf ID |
837 | if (ev >= 15) |
838 | pi->last_force_request_resend = ceph_decode_32(p); | |
839 | else | |
840 | pi->last_force_request_resend = 0; | |
841 | ||
8e48cf00 ID |
842 | if (ev >= 16) |
843 | *p += 4; /* skip min_read_recency_for_promote */ | |
844 | ||
845 | if (ev >= 17) | |
846 | *p += 8; /* skip expected_num_objects */ | |
847 | ||
848 | if (ev >= 19) | |
849 | *p += 4; /* skip cache_target_dirty_high_ratio_micro */ | |
850 | ||
851 | if (ev >= 20) | |
852 | *p += 4; /* skip min_write_recency_for_promote */ | |
853 | ||
854 | if (ev >= 21) | |
855 | *p += 1; /* skip use_gmt_hitset */ | |
856 | ||
857 | if (ev >= 22) | |
858 | *p += 1; /* skip fast_read */ | |
859 | ||
860 | if (ev >= 23) { | |
861 | *p += 4; /* skip hit_set_grade_decay_rate */ | |
862 | *p += 4; /* skip hit_set_search_last_n */ | |
863 | } | |
864 | ||
865 | if (ev >= 24) { | |
866 | /* skip opts */ | |
867 | *p += 1 + 1; /* versions */ | |
868 | len = ceph_decode_32(p); | |
869 | *p += len; | |
870 | } | |
871 | ||
872 | if (ev >= 25) | |
873 | pi->last_force_request_resend = ceph_decode_32(p); | |
874 | ||
4f6a7e5e SW |
875 | /* ignore the rest */ |
876 | ||
877 | *p = pool_end; | |
878 | calc_pg_masks(pi); | |
73a7e693 SW |
879 | return 0; |
880 | ||
881 | bad: | |
882 | return -EINVAL; | |
efd7576b SW |
883 | } |
884 | ||
0f70c7ee | 885 | static int decode_pool_names(void **p, void *end, struct ceph_osdmap *map) |
2844a76a SW |
886 | { |
887 | struct ceph_pg_pool_info *pi; | |
4f6a7e5e SW |
888 | u32 num, len; |
889 | u64 pool; | |
2844a76a SW |
890 | |
891 | ceph_decode_32_safe(p, end, num, bad); | |
892 | dout(" %d pool names\n", num); | |
893 | while (num--) { | |
4f6a7e5e | 894 | ceph_decode_64_safe(p, end, pool, bad); |
2844a76a | 895 | ceph_decode_32_safe(p, end, len, bad); |
4f6a7e5e | 896 | dout(" pool %llu len %d\n", pool, len); |
ad3b904c | 897 | ceph_decode_need(p, end, len, bad); |
2844a76a SW |
898 | pi = __lookup_pg_pool(&map->pg_pools, pool); |
899 | if (pi) { | |
ad3b904c XW |
900 | char *name = kstrndup(*p, len, GFP_NOFS); |
901 | ||
902 | if (!name) | |
903 | return -ENOMEM; | |
2844a76a | 904 | kfree(pi->name); |
ad3b904c XW |
905 | pi->name = name; |
906 | dout(" name is %s\n", pi->name); | |
2844a76a SW |
907 | } |
908 | *p += len; | |
909 | } | |
910 | return 0; | |
911 | ||
912 | bad: | |
913 | return -EINVAL; | |
914 | } | |
915 | ||
916 | /* | |
917 | * osd map | |
918 | */ | |
e5253a7b ID |
919 | struct ceph_osdmap *ceph_osdmap_alloc(void) |
920 | { | |
921 | struct ceph_osdmap *map; | |
922 | ||
923 | map = kzalloc(sizeof(*map), GFP_NOIO); | |
924 | if (!map) | |
925 | return NULL; | |
926 | ||
927 | map->pg_pools = RB_ROOT; | |
928 | map->pool_max = -1; | |
929 | map->pg_temp = RB_ROOT; | |
930 | map->primary_temp = RB_ROOT; | |
6f428df4 ID |
931 | map->pg_upmap = RB_ROOT; |
932 | map->pg_upmap_items = RB_ROOT; | |
743efcff | 933 | mutex_init(&map->crush_workspace_mutex); |
e5253a7b ID |
934 | |
935 | return map; | |
936 | } | |
937 | ||
2844a76a SW |
938 | void ceph_osdmap_destroy(struct ceph_osdmap *map) |
939 | { | |
940 | dout("osdmap_destroy %p\n", map); | |
941 | if (map->crush) | |
942 | crush_destroy(map->crush); | |
943 | while (!RB_EMPTY_ROOT(&map->pg_temp)) { | |
944 | struct ceph_pg_mapping *pg = | |
945 | rb_entry(rb_first(&map->pg_temp), | |
946 | struct ceph_pg_mapping, node); | |
ab75144b ID |
947 | erase_pg_mapping(&map->pg_temp, pg); |
948 | free_pg_mapping(pg); | |
2844a76a | 949 | } |
9686f94c ID |
950 | while (!RB_EMPTY_ROOT(&map->primary_temp)) { |
951 | struct ceph_pg_mapping *pg = | |
952 | rb_entry(rb_first(&map->primary_temp), | |
953 | struct ceph_pg_mapping, node); | |
ab75144b ID |
954 | erase_pg_mapping(&map->primary_temp, pg); |
955 | free_pg_mapping(pg); | |
9686f94c | 956 | } |
6f428df4 ID |
957 | while (!RB_EMPTY_ROOT(&map->pg_upmap)) { |
958 | struct ceph_pg_mapping *pg = | |
959 | rb_entry(rb_first(&map->pg_upmap), | |
960 | struct ceph_pg_mapping, node); | |
961 | rb_erase(&pg->node, &map->pg_upmap); | |
962 | kfree(pg); | |
963 | } | |
964 | while (!RB_EMPTY_ROOT(&map->pg_upmap_items)) { | |
965 | struct ceph_pg_mapping *pg = | |
966 | rb_entry(rb_first(&map->pg_upmap_items), | |
967 | struct ceph_pg_mapping, node); | |
968 | rb_erase(&pg->node, &map->pg_upmap_items); | |
969 | kfree(pg); | |
970 | } | |
2844a76a SW |
971 | while (!RB_EMPTY_ROOT(&map->pg_pools)) { |
972 | struct ceph_pg_pool_info *pi = | |
973 | rb_entry(rb_first(&map->pg_pools), | |
974 | struct ceph_pg_pool_info, node); | |
975 | __remove_pg_pool(&map->pg_pools, pi); | |
976 | } | |
977 | kfree(map->osd_state); | |
978 | kfree(map->osd_weight); | |
979 | kfree(map->osd_addr); | |
2cfa34f2 | 980 | kfree(map->osd_primary_affinity); |
66a0e2d5 | 981 | kfree(map->crush_workspace); |
2844a76a SW |
982 | kfree(map); |
983 | } | |
984 | ||
985 | /* | |
4d60351f ID |
986 | * Adjust max_osd value, (re)allocate arrays. |
987 | * | |
988 | * The new elements are properly initialized. | |
2844a76a SW |
989 | */ |
990 | static int osdmap_set_max_osd(struct ceph_osdmap *map, int max) | |
991 | { | |
0bb05da2 | 992 | u32 *state; |
2844a76a | 993 | u32 *weight; |
4d60351f ID |
994 | struct ceph_entity_addr *addr; |
995 | int i; | |
2844a76a | 996 | |
4d60351f | 997 | state = krealloc(map->osd_state, max*sizeof(*state), GFP_NOFS); |
589506f1 LR |
998 | if (!state) |
999 | return -ENOMEM; | |
1000 | map->osd_state = state; | |
1001 | ||
4d60351f | 1002 | weight = krealloc(map->osd_weight, max*sizeof(*weight), GFP_NOFS); |
589506f1 LR |
1003 | if (!weight) |
1004 | return -ENOMEM; | |
1005 | map->osd_weight = weight; | |
4d60351f | 1006 | |
589506f1 LR |
1007 | addr = krealloc(map->osd_addr, max*sizeof(*addr), GFP_NOFS); |
1008 | if (!addr) | |
2844a76a | 1009 | return -ENOMEM; |
589506f1 | 1010 | map->osd_addr = addr; |
2844a76a | 1011 | |
4d60351f | 1012 | for (i = map->max_osd; i < max; i++) { |
589506f1 LR |
1013 | map->osd_state[i] = 0; |
1014 | map->osd_weight[i] = CEPH_OSD_OUT; | |
1015 | memset(map->osd_addr + i, 0, sizeof(*map->osd_addr)); | |
2844a76a SW |
1016 | } |
1017 | ||
2cfa34f2 ID |
1018 | if (map->osd_primary_affinity) { |
1019 | u32 *affinity; | |
1020 | ||
1021 | affinity = krealloc(map->osd_primary_affinity, | |
1022 | max*sizeof(*affinity), GFP_NOFS); | |
1023 | if (!affinity) | |
1024 | return -ENOMEM; | |
589506f1 | 1025 | map->osd_primary_affinity = affinity; |
2cfa34f2 ID |
1026 | |
1027 | for (i = map->max_osd; i < max; i++) | |
589506f1 LR |
1028 | map->osd_primary_affinity[i] = |
1029 | CEPH_OSD_DEFAULT_PRIMARY_AFFINITY; | |
2cfa34f2 ID |
1030 | } |
1031 | ||
2844a76a | 1032 | map->max_osd = max; |
4d60351f | 1033 | |
2844a76a SW |
1034 | return 0; |
1035 | } | |
1036 | ||
1b6a78b5 ID |
1037 | static int osdmap_set_crush(struct ceph_osdmap *map, struct crush_map *crush) |
1038 | { | |
66a0e2d5 | 1039 | void *workspace; |
743efcff | 1040 | size_t work_size; |
66a0e2d5 | 1041 | |
1b6a78b5 ID |
1042 | if (IS_ERR(crush)) |
1043 | return PTR_ERR(crush); | |
1044 | ||
743efcff ID |
1045 | work_size = crush_work_size(crush, CEPH_PG_MAX_SIZE); |
1046 | dout("%s work_size %zu bytes\n", __func__, work_size); | |
1047 | workspace = kmalloc(work_size, GFP_NOIO); | |
66a0e2d5 ID |
1048 | if (!workspace) { |
1049 | crush_destroy(crush); | |
1050 | return -ENOMEM; | |
1051 | } | |
1052 | crush_init_workspace(crush, workspace); | |
1053 | ||
1b6a78b5 ID |
1054 | if (map->crush) |
1055 | crush_destroy(map->crush); | |
66a0e2d5 | 1056 | kfree(map->crush_workspace); |
1b6a78b5 | 1057 | map->crush = crush; |
66a0e2d5 | 1058 | map->crush_workspace = workspace; |
1b6a78b5 ID |
1059 | return 0; |
1060 | } | |
1061 | ||
ec7af972 ID |
1062 | #define OSDMAP_WRAPPER_COMPAT_VER 7 |
1063 | #define OSDMAP_CLIENT_DATA_COMPAT_VER 1 | |
1064 | ||
1065 | /* | |
1066 | * Return 0 or error. On success, *v is set to 0 for old (v6) osdmaps, | |
1067 | * to struct_v of the client_data section for new (v7 and above) | |
1068 | * osdmaps. | |
1069 | */ | |
1070 | static int get_osdmap_client_data_v(void **p, void *end, | |
1071 | const char *prefix, u8 *v) | |
1072 | { | |
1073 | u8 struct_v; | |
1074 | ||
1075 | ceph_decode_8_safe(p, end, struct_v, e_inval); | |
1076 | if (struct_v >= 7) { | |
1077 | u8 struct_compat; | |
1078 | ||
1079 | ceph_decode_8_safe(p, end, struct_compat, e_inval); | |
1080 | if (struct_compat > OSDMAP_WRAPPER_COMPAT_VER) { | |
b9a67899 JP |
1081 | pr_warn("got v %d cv %d > %d of %s ceph_osdmap\n", |
1082 | struct_v, struct_compat, | |
1083 | OSDMAP_WRAPPER_COMPAT_VER, prefix); | |
ec7af972 ID |
1084 | return -EINVAL; |
1085 | } | |
1086 | *p += 4; /* ignore wrapper struct_len */ | |
1087 | ||
1088 | ceph_decode_8_safe(p, end, struct_v, e_inval); | |
1089 | ceph_decode_8_safe(p, end, struct_compat, e_inval); | |
1090 | if (struct_compat > OSDMAP_CLIENT_DATA_COMPAT_VER) { | |
b9a67899 JP |
1091 | pr_warn("got v %d cv %d > %d of %s ceph_osdmap client data\n", |
1092 | struct_v, struct_compat, | |
1093 | OSDMAP_CLIENT_DATA_COMPAT_VER, prefix); | |
ec7af972 ID |
1094 | return -EINVAL; |
1095 | } | |
1096 | *p += 4; /* ignore client data struct_len */ | |
1097 | } else { | |
1098 | u16 version; | |
1099 | ||
1100 | *p -= 1; | |
1101 | ceph_decode_16_safe(p, end, version, e_inval); | |
1102 | if (version < 6) { | |
b9a67899 JP |
1103 | pr_warn("got v %d < 6 of %s ceph_osdmap\n", |
1104 | version, prefix); | |
ec7af972 ID |
1105 | return -EINVAL; |
1106 | } | |
1107 | ||
1108 | /* old osdmap enconding */ | |
1109 | struct_v = 0; | |
1110 | } | |
1111 | ||
1112 | *v = struct_v; | |
1113 | return 0; | |
1114 | ||
1115 | e_inval: | |
1116 | return -EINVAL; | |
1117 | } | |
1118 | ||
433fbdd3 ID |
1119 | static int __decode_pools(void **p, void *end, struct ceph_osdmap *map, |
1120 | bool incremental) | |
1121 | { | |
1122 | u32 n; | |
1123 | ||
1124 | ceph_decode_32_safe(p, end, n, e_inval); | |
1125 | while (n--) { | |
1126 | struct ceph_pg_pool_info *pi; | |
1127 | u64 pool; | |
1128 | int ret; | |
1129 | ||
1130 | ceph_decode_64_safe(p, end, pool, e_inval); | |
1131 | ||
1132 | pi = __lookup_pg_pool(&map->pg_pools, pool); | |
1133 | if (!incremental || !pi) { | |
1134 | pi = kzalloc(sizeof(*pi), GFP_NOFS); | |
1135 | if (!pi) | |
1136 | return -ENOMEM; | |
1137 | ||
1138 | pi->id = pool; | |
1139 | ||
1140 | ret = __insert_pg_pool(&map->pg_pools, pi); | |
1141 | if (ret) { | |
1142 | kfree(pi); | |
1143 | return ret; | |
1144 | } | |
1145 | } | |
1146 | ||
1147 | ret = decode_pool(p, end, pi); | |
1148 | if (ret) | |
1149 | return ret; | |
1150 | } | |
1151 | ||
1152 | return 0; | |
1153 | ||
1154 | e_inval: | |
1155 | return -EINVAL; | |
1156 | } | |
1157 | ||
1158 | static int decode_pools(void **p, void *end, struct ceph_osdmap *map) | |
1159 | { | |
1160 | return __decode_pools(p, end, map, false); | |
1161 | } | |
1162 | ||
1163 | static int decode_new_pools(void **p, void *end, struct ceph_osdmap *map) | |
1164 | { | |
1165 | return __decode_pools(p, end, map, true); | |
1166 | } | |
1167 | ||
a303bb0e ID |
1168 | typedef struct ceph_pg_mapping *(*decode_mapping_fn_t)(void **, void *, bool); |
1169 | ||
1170 | static int decode_pg_mapping(void **p, void *end, struct rb_root *mapping_root, | |
1171 | decode_mapping_fn_t fn, bool incremental) | |
10db634e ID |
1172 | { |
1173 | u32 n; | |
1174 | ||
a303bb0e ID |
1175 | WARN_ON(!incremental && !fn); |
1176 | ||
10db634e ID |
1177 | ceph_decode_32_safe(p, end, n, e_inval); |
1178 | while (n--) { | |
a303bb0e | 1179 | struct ceph_pg_mapping *pg; |
10db634e | 1180 | struct ceph_pg pgid; |
10db634e ID |
1181 | int ret; |
1182 | ||
1183 | ret = ceph_decode_pgid(p, end, &pgid); | |
1184 | if (ret) | |
1185 | return ret; | |
1186 | ||
ab75144b ID |
1187 | pg = lookup_pg_mapping(mapping_root, &pgid); |
1188 | if (pg) { | |
1189 | WARN_ON(!incremental); | |
1190 | erase_pg_mapping(mapping_root, pg); | |
1191 | free_pg_mapping(pg); | |
1192 | } | |
10db634e | 1193 | |
a303bb0e ID |
1194 | if (fn) { |
1195 | pg = fn(p, end, incremental); | |
1196 | if (IS_ERR(pg)) | |
1197 | return PTR_ERR(pg); | |
10db634e | 1198 | |
a303bb0e ID |
1199 | if (pg) { |
1200 | pg->pgid = pgid; /* struct */ | |
ab75144b | 1201 | insert_pg_mapping(mapping_root, pg); |
10db634e ID |
1202 | } |
1203 | } | |
1204 | } | |
1205 | ||
1206 | return 0; | |
1207 | ||
1208 | e_inval: | |
1209 | return -EINVAL; | |
1210 | } | |
1211 | ||
a303bb0e ID |
1212 | static struct ceph_pg_mapping *__decode_pg_temp(void **p, void *end, |
1213 | bool incremental) | |
10db634e | 1214 | { |
a303bb0e ID |
1215 | struct ceph_pg_mapping *pg; |
1216 | u32 len, i; | |
10db634e | 1217 | |
a303bb0e ID |
1218 | ceph_decode_32_safe(p, end, len, e_inval); |
1219 | if (len == 0 && incremental) | |
1220 | return NULL; /* new_pg_temp: [] to remove */ | |
1221 | if (len > (SIZE_MAX - sizeof(*pg)) / sizeof(u32)) | |
1222 | return ERR_PTR(-EINVAL); | |
10db634e | 1223 | |
a303bb0e ID |
1224 | ceph_decode_need(p, end, len * sizeof(u32), e_inval); |
1225 | pg = alloc_pg_mapping(len * sizeof(u32)); | |
1226 | if (!pg) | |
1227 | return ERR_PTR(-ENOMEM); | |
d286de79 | 1228 | |
a303bb0e ID |
1229 | pg->pg_temp.len = len; |
1230 | for (i = 0; i < len; i++) | |
1231 | pg->pg_temp.osds[i] = ceph_decode_32(p); | |
d286de79 | 1232 | |
a303bb0e | 1233 | return pg; |
d286de79 | 1234 | |
a303bb0e ID |
1235 | e_inval: |
1236 | return ERR_PTR(-EINVAL); | |
1237 | } | |
d286de79 | 1238 | |
a303bb0e ID |
1239 | static int decode_pg_temp(void **p, void *end, struct ceph_osdmap *map) |
1240 | { | |
1241 | return decode_pg_mapping(p, end, &map->pg_temp, __decode_pg_temp, | |
1242 | false); | |
1243 | } | |
d286de79 | 1244 | |
a303bb0e ID |
1245 | static int decode_new_pg_temp(void **p, void *end, struct ceph_osdmap *map) |
1246 | { | |
1247 | return decode_pg_mapping(p, end, &map->pg_temp, __decode_pg_temp, | |
1248 | true); | |
1249 | } | |
d286de79 | 1250 | |
a303bb0e ID |
1251 | static struct ceph_pg_mapping *__decode_primary_temp(void **p, void *end, |
1252 | bool incremental) | |
1253 | { | |
1254 | struct ceph_pg_mapping *pg; | |
1255 | u32 osd; | |
d286de79 | 1256 | |
a303bb0e ID |
1257 | ceph_decode_32_safe(p, end, osd, e_inval); |
1258 | if (osd == (u32)-1 && incremental) | |
1259 | return NULL; /* new_primary_temp: -1 to remove */ | |
d286de79 | 1260 | |
a303bb0e ID |
1261 | pg = alloc_pg_mapping(0); |
1262 | if (!pg) | |
1263 | return ERR_PTR(-ENOMEM); | |
d286de79 | 1264 | |
a303bb0e ID |
1265 | pg->primary_temp.osd = osd; |
1266 | return pg; | |
d286de79 ID |
1267 | |
1268 | e_inval: | |
a303bb0e | 1269 | return ERR_PTR(-EINVAL); |
d286de79 ID |
1270 | } |
1271 | ||
1272 | static int decode_primary_temp(void **p, void *end, struct ceph_osdmap *map) | |
1273 | { | |
a303bb0e ID |
1274 | return decode_pg_mapping(p, end, &map->primary_temp, |
1275 | __decode_primary_temp, false); | |
d286de79 ID |
1276 | } |
1277 | ||
1278 | static int decode_new_primary_temp(void **p, void *end, | |
1279 | struct ceph_osdmap *map) | |
1280 | { | |
a303bb0e ID |
1281 | return decode_pg_mapping(p, end, &map->primary_temp, |
1282 | __decode_primary_temp, true); | |
d286de79 ID |
1283 | } |
1284 | ||
2cfa34f2 ID |
1285 | u32 ceph_get_primary_affinity(struct ceph_osdmap *map, int osd) |
1286 | { | |
1287 | BUG_ON(osd >= map->max_osd); | |
1288 | ||
1289 | if (!map->osd_primary_affinity) | |
1290 | return CEPH_OSD_DEFAULT_PRIMARY_AFFINITY; | |
1291 | ||
1292 | return map->osd_primary_affinity[osd]; | |
1293 | } | |
1294 | ||
1295 | static int set_primary_affinity(struct ceph_osdmap *map, int osd, u32 aff) | |
1296 | { | |
1297 | BUG_ON(osd >= map->max_osd); | |
1298 | ||
1299 | if (!map->osd_primary_affinity) { | |
1300 | int i; | |
1301 | ||
1302 | map->osd_primary_affinity = kmalloc(map->max_osd*sizeof(u32), | |
1303 | GFP_NOFS); | |
1304 | if (!map->osd_primary_affinity) | |
1305 | return -ENOMEM; | |
1306 | ||
1307 | for (i = 0; i < map->max_osd; i++) | |
1308 | map->osd_primary_affinity[i] = | |
1309 | CEPH_OSD_DEFAULT_PRIMARY_AFFINITY; | |
1310 | } | |
1311 | ||
1312 | map->osd_primary_affinity[osd] = aff; | |
1313 | ||
1314 | return 0; | |
1315 | } | |
1316 | ||
63a6993f ID |
1317 | static int decode_primary_affinity(void **p, void *end, |
1318 | struct ceph_osdmap *map) | |
1319 | { | |
1320 | u32 len, i; | |
1321 | ||
1322 | ceph_decode_32_safe(p, end, len, e_inval); | |
1323 | if (len == 0) { | |
1324 | kfree(map->osd_primary_affinity); | |
1325 | map->osd_primary_affinity = NULL; | |
1326 | return 0; | |
1327 | } | |
1328 | if (len != map->max_osd) | |
1329 | goto e_inval; | |
1330 | ||
1331 | ceph_decode_need(p, end, map->max_osd*sizeof(u32), e_inval); | |
1332 | ||
1333 | for (i = 0; i < map->max_osd; i++) { | |
1334 | int ret; | |
1335 | ||
1336 | ret = set_primary_affinity(map, i, ceph_decode_32(p)); | |
1337 | if (ret) | |
1338 | return ret; | |
1339 | } | |
1340 | ||
1341 | return 0; | |
1342 | ||
1343 | e_inval: | |
1344 | return -EINVAL; | |
1345 | } | |
1346 | ||
1347 | static int decode_new_primary_affinity(void **p, void *end, | |
1348 | struct ceph_osdmap *map) | |
1349 | { | |
1350 | u32 n; | |
1351 | ||
1352 | ceph_decode_32_safe(p, end, n, e_inval); | |
1353 | while (n--) { | |
1354 | u32 osd, aff; | |
1355 | int ret; | |
1356 | ||
1357 | ceph_decode_32_safe(p, end, osd, e_inval); | |
1358 | ceph_decode_32_safe(p, end, aff, e_inval); | |
1359 | ||
1360 | ret = set_primary_affinity(map, osd, aff); | |
1361 | if (ret) | |
1362 | return ret; | |
f31da0f3 ID |
1363 | |
1364 | pr_info("osd%d primary-affinity 0x%x\n", osd, aff); | |
63a6993f ID |
1365 | } |
1366 | ||
1367 | return 0; | |
1368 | ||
1369 | e_inval: | |
1370 | return -EINVAL; | |
1371 | } | |
1372 | ||
6f428df4 ID |
1373 | static struct ceph_pg_mapping *__decode_pg_upmap(void **p, void *end, |
1374 | bool __unused) | |
1375 | { | |
1376 | return __decode_pg_temp(p, end, false); | |
1377 | } | |
1378 | ||
1379 | static int decode_pg_upmap(void **p, void *end, struct ceph_osdmap *map) | |
1380 | { | |
1381 | return decode_pg_mapping(p, end, &map->pg_upmap, __decode_pg_upmap, | |
1382 | false); | |
1383 | } | |
1384 | ||
1385 | static int decode_new_pg_upmap(void **p, void *end, struct ceph_osdmap *map) | |
1386 | { | |
1387 | return decode_pg_mapping(p, end, &map->pg_upmap, __decode_pg_upmap, | |
1388 | true); | |
1389 | } | |
1390 | ||
1391 | static int decode_old_pg_upmap(void **p, void *end, struct ceph_osdmap *map) | |
1392 | { | |
1393 | return decode_pg_mapping(p, end, &map->pg_upmap, NULL, true); | |
1394 | } | |
1395 | ||
1396 | static struct ceph_pg_mapping *__decode_pg_upmap_items(void **p, void *end, | |
1397 | bool __unused) | |
1398 | { | |
1399 | struct ceph_pg_mapping *pg; | |
1400 | u32 len, i; | |
1401 | ||
1402 | ceph_decode_32_safe(p, end, len, e_inval); | |
1403 | if (len > (SIZE_MAX - sizeof(*pg)) / (2 * sizeof(u32))) | |
1404 | return ERR_PTR(-EINVAL); | |
1405 | ||
1406 | ceph_decode_need(p, end, 2 * len * sizeof(u32), e_inval); | |
f5cc6898 | 1407 | pg = alloc_pg_mapping(2 * len * sizeof(u32)); |
6f428df4 ID |
1408 | if (!pg) |
1409 | return ERR_PTR(-ENOMEM); | |
1410 | ||
1411 | pg->pg_upmap_items.len = len; | |
1412 | for (i = 0; i < len; i++) { | |
1413 | pg->pg_upmap_items.from_to[i][0] = ceph_decode_32(p); | |
1414 | pg->pg_upmap_items.from_to[i][1] = ceph_decode_32(p); | |
1415 | } | |
1416 | ||
1417 | return pg; | |
1418 | ||
1419 | e_inval: | |
1420 | return ERR_PTR(-EINVAL); | |
1421 | } | |
1422 | ||
1423 | static int decode_pg_upmap_items(void **p, void *end, struct ceph_osdmap *map) | |
1424 | { | |
1425 | return decode_pg_mapping(p, end, &map->pg_upmap_items, | |
1426 | __decode_pg_upmap_items, false); | |
1427 | } | |
1428 | ||
1429 | static int decode_new_pg_upmap_items(void **p, void *end, | |
1430 | struct ceph_osdmap *map) | |
1431 | { | |
1432 | return decode_pg_mapping(p, end, &map->pg_upmap_items, | |
1433 | __decode_pg_upmap_items, true); | |
1434 | } | |
1435 | ||
1436 | static int decode_old_pg_upmap_items(void **p, void *end, | |
1437 | struct ceph_osdmap *map) | |
1438 | { | |
1439 | return decode_pg_mapping(p, end, &map->pg_upmap_items, NULL, true); | |
1440 | } | |
1441 | ||
f24e9980 SW |
1442 | /* |
1443 | * decode a full map. | |
1444 | */ | |
a2505d63 | 1445 | static int osdmap_decode(void **p, void *end, struct ceph_osdmap *map) |
f24e9980 | 1446 | { |
ec7af972 | 1447 | u8 struct_v; |
38a8d560 | 1448 | u32 epoch = 0; |
f24e9980 | 1449 | void *start = *p; |
3977058c ID |
1450 | u32 max; |
1451 | u32 len, i; | |
597b52f6 | 1452 | int err; |
f24e9980 | 1453 | |
a2505d63 | 1454 | dout("%s %p to %p len %d\n", __func__, *p, end, (int)(end - *p)); |
f24e9980 | 1455 | |
ec7af972 ID |
1456 | err = get_osdmap_client_data_v(p, end, "full", &struct_v); |
1457 | if (err) | |
1458 | goto bad; | |
f24e9980 | 1459 | |
53bbaba9 ID |
1460 | /* fsid, epoch, created, modified */ |
1461 | ceph_decode_need(p, end, sizeof(map->fsid) + sizeof(u32) + | |
1462 | sizeof(map->created) + sizeof(map->modified), e_inval); | |
f24e9980 | 1463 | ceph_decode_copy(p, &map->fsid, sizeof(map->fsid)); |
38a8d560 | 1464 | epoch = map->epoch = ceph_decode_32(p); |
f24e9980 SW |
1465 | ceph_decode_copy(p, &map->created, sizeof(map->created)); |
1466 | ceph_decode_copy(p, &map->modified, sizeof(map->modified)); | |
1467 | ||
433fbdd3 ID |
1468 | /* pools */ |
1469 | err = decode_pools(p, end, map); | |
1470 | if (err) | |
1471 | goto bad; | |
2844a76a | 1472 | |
0f70c7ee ID |
1473 | /* pool_name */ |
1474 | err = decode_pool_names(p, end, map); | |
597b52f6 | 1475 | if (err) |
4f6a7e5e | 1476 | goto bad; |
2844a76a | 1477 | |
597b52f6 | 1478 | ceph_decode_32_safe(p, end, map->pool_max, e_inval); |
f24e9980 | 1479 | |
597b52f6 | 1480 | ceph_decode_32_safe(p, end, map->flags, e_inval); |
f24e9980 | 1481 | |
3977058c ID |
1482 | /* max_osd */ |
1483 | ceph_decode_32_safe(p, end, max, e_inval); | |
f24e9980 SW |
1484 | |
1485 | /* (re)alloc osd arrays */ | |
1486 | err = osdmap_set_max_osd(map, max); | |
597b52f6 | 1487 | if (err) |
f24e9980 | 1488 | goto bad; |
f24e9980 | 1489 | |
2d88b2e0 | 1490 | /* osd_state, osd_weight, osd_addrs->client_addr */ |
f24e9980 | 1491 | ceph_decode_need(p, end, 3*sizeof(u32) + |
0bb05da2 ID |
1492 | map->max_osd*((struct_v >= 5 ? sizeof(u32) : |
1493 | sizeof(u8)) + | |
1494 | sizeof(*map->osd_weight) + | |
597b52f6 ID |
1495 | sizeof(*map->osd_addr)), e_inval); |
1496 | ||
2d88b2e0 ID |
1497 | if (ceph_decode_32(p) != map->max_osd) |
1498 | goto e_inval; | |
1499 | ||
0bb05da2 ID |
1500 | if (struct_v >= 5) { |
1501 | for (i = 0; i < map->max_osd; i++) | |
1502 | map->osd_state[i] = ceph_decode_32(p); | |
1503 | } else { | |
1504 | for (i = 0; i < map->max_osd; i++) | |
1505 | map->osd_state[i] = ceph_decode_8(p); | |
1506 | } | |
f24e9980 | 1507 | |
2d88b2e0 ID |
1508 | if (ceph_decode_32(p) != map->max_osd) |
1509 | goto e_inval; | |
1510 | ||
f24e9980 | 1511 | for (i = 0; i < map->max_osd; i++) |
c89136ea | 1512 | map->osd_weight[i] = ceph_decode_32(p); |
f24e9980 | 1513 | |
2d88b2e0 ID |
1514 | if (ceph_decode_32(p) != map->max_osd) |
1515 | goto e_inval; | |
1516 | ||
f24e9980 | 1517 | ceph_decode_copy(p, map->osd_addr, map->max_osd*sizeof(*map->osd_addr)); |
63f2d211 SW |
1518 | for (i = 0; i < map->max_osd; i++) |
1519 | ceph_decode_addr(&map->osd_addr[i]); | |
f24e9980 SW |
1520 | |
1521 | /* pg_temp */ | |
10db634e ID |
1522 | err = decode_pg_temp(p, end, map); |
1523 | if (err) | |
1524 | goto bad; | |
f24e9980 | 1525 | |
d286de79 ID |
1526 | /* primary_temp */ |
1527 | if (struct_v >= 1) { | |
1528 | err = decode_primary_temp(p, end, map); | |
1529 | if (err) | |
1530 | goto bad; | |
1531 | } | |
1532 | ||
63a6993f ID |
1533 | /* primary_affinity */ |
1534 | if (struct_v >= 2) { | |
1535 | err = decode_primary_affinity(p, end, map); | |
1536 | if (err) | |
1537 | goto bad; | |
1538 | } else { | |
6f428df4 | 1539 | WARN_ON(map->osd_primary_affinity); |
63a6993f ID |
1540 | } |
1541 | ||
f24e9980 | 1542 | /* crush */ |
597b52f6 | 1543 | ceph_decode_32_safe(p, end, len, e_inval); |
1b6a78b5 ID |
1544 | err = osdmap_set_crush(map, crush_decode(*p, min(*p + len, end))); |
1545 | if (err) | |
f24e9980 | 1546 | goto bad; |
f24e9980 | 1547 | |
6f428df4 ID |
1548 | *p += len; |
1549 | if (struct_v >= 3) { | |
1550 | /* erasure_code_profiles */ | |
1551 | ceph_decode_skip_map_of_map(p, end, string, string, string, | |
00c8ebb3 | 1552 | e_inval); |
6f428df4 ID |
1553 | } |
1554 | ||
1555 | if (struct_v >= 4) { | |
1556 | err = decode_pg_upmap(p, end, map); | |
1557 | if (err) | |
1558 | goto bad; | |
1559 | ||
1560 | err = decode_pg_upmap_items(p, end, map); | |
1561 | if (err) | |
1562 | goto bad; | |
1563 | } else { | |
1564 | WARN_ON(!RB_EMPTY_ROOT(&map->pg_upmap)); | |
1565 | WARN_ON(!RB_EMPTY_ROOT(&map->pg_upmap_items)); | |
1566 | } | |
1567 | ||
38a8d560 | 1568 | /* ignore the rest */ |
f24e9980 SW |
1569 | *p = end; |
1570 | ||
38a8d560 | 1571 | dout("full osdmap epoch %d max_osd %d\n", map->epoch, map->max_osd); |
a2505d63 | 1572 | return 0; |
f24e9980 | 1573 | |
597b52f6 ID |
1574 | e_inval: |
1575 | err = -EINVAL; | |
f24e9980 | 1576 | bad: |
38a8d560 ID |
1577 | pr_err("corrupt full osdmap (%d) epoch %d off %d (%p of %p-%p)\n", |
1578 | err, epoch, (int)(*p - start), *p, start, end); | |
1579 | print_hex_dump(KERN_DEBUG, "osdmap: ", | |
1580 | DUMP_PREFIX_OFFSET, 16, 1, | |
1581 | start, end - start, true); | |
a2505d63 ID |
1582 | return err; |
1583 | } | |
1584 | ||
1585 | /* | |
1586 | * Allocate and decode a full map. | |
1587 | */ | |
1588 | struct ceph_osdmap *ceph_osdmap_decode(void **p, void *end) | |
1589 | { | |
1590 | struct ceph_osdmap *map; | |
1591 | int ret; | |
1592 | ||
e5253a7b | 1593 | map = ceph_osdmap_alloc(); |
a2505d63 ID |
1594 | if (!map) |
1595 | return ERR_PTR(-ENOMEM); | |
1596 | ||
a2505d63 ID |
1597 | ret = osdmap_decode(p, end, map); |
1598 | if (ret) { | |
1599 | ceph_osdmap_destroy(map); | |
1600 | return ERR_PTR(ret); | |
1601 | } | |
1602 | ||
1603 | return map; | |
f24e9980 SW |
1604 | } |
1605 | ||
930c5328 ID |
1606 | /* |
1607 | * Encoding order is (new_up_client, new_state, new_weight). Need to | |
1608 | * apply in the (new_weight, new_state, new_up_client) order, because | |
1609 | * an incremental map may look like e.g. | |
1610 | * | |
1611 | * new_up_client: { osd=6, addr=... } # set osd_state and addr | |
1612 | * new_state: { osd=6, xorstate=EXISTS } # clear osd_state | |
1613 | */ | |
0bb05da2 | 1614 | static int decode_new_up_state_weight(void **p, void *end, u8 struct_v, |
930c5328 ID |
1615 | struct ceph_osdmap *map) |
1616 | { | |
1617 | void *new_up_client; | |
1618 | void *new_state; | |
1619 | void *new_weight_end; | |
1620 | u32 len; | |
1621 | ||
1622 | new_up_client = *p; | |
1623 | ceph_decode_32_safe(p, end, len, e_inval); | |
1624 | len *= sizeof(u32) + sizeof(struct ceph_entity_addr); | |
1625 | ceph_decode_need(p, end, len, e_inval); | |
1626 | *p += len; | |
1627 | ||
1628 | new_state = *p; | |
1629 | ceph_decode_32_safe(p, end, len, e_inval); | |
0bb05da2 | 1630 | len *= sizeof(u32) + (struct_v >= 5 ? sizeof(u32) : sizeof(u8)); |
930c5328 ID |
1631 | ceph_decode_need(p, end, len, e_inval); |
1632 | *p += len; | |
1633 | ||
1634 | /* new_weight */ | |
1635 | ceph_decode_32_safe(p, end, len, e_inval); | |
1636 | while (len--) { | |
1637 | s32 osd; | |
1638 | u32 w; | |
1639 | ||
1640 | ceph_decode_need(p, end, 2*sizeof(u32), e_inval); | |
1641 | osd = ceph_decode_32(p); | |
1642 | w = ceph_decode_32(p); | |
1643 | BUG_ON(osd >= map->max_osd); | |
1644 | pr_info("osd%d weight 0x%x %s\n", osd, w, | |
1645 | w == CEPH_OSD_IN ? "(in)" : | |
1646 | (w == CEPH_OSD_OUT ? "(out)" : "")); | |
1647 | map->osd_weight[osd] = w; | |
1648 | ||
1649 | /* | |
1650 | * If we are marking in, set the EXISTS, and clear the | |
1651 | * AUTOOUT and NEW bits. | |
1652 | */ | |
1653 | if (w) { | |
1654 | map->osd_state[osd] |= CEPH_OSD_EXISTS; | |
1655 | map->osd_state[osd] &= ~(CEPH_OSD_AUTOOUT | | |
1656 | CEPH_OSD_NEW); | |
1657 | } | |
1658 | } | |
1659 | new_weight_end = *p; | |
1660 | ||
1661 | /* new_state (up/down) */ | |
1662 | *p = new_state; | |
1663 | len = ceph_decode_32(p); | |
1664 | while (len--) { | |
1665 | s32 osd; | |
0bb05da2 | 1666 | u32 xorstate; |
930c5328 ID |
1667 | int ret; |
1668 | ||
1669 | osd = ceph_decode_32(p); | |
0bb05da2 ID |
1670 | if (struct_v >= 5) |
1671 | xorstate = ceph_decode_32(p); | |
1672 | else | |
1673 | xorstate = ceph_decode_8(p); | |
930c5328 ID |
1674 | if (xorstate == 0) |
1675 | xorstate = CEPH_OSD_UP; | |
1676 | BUG_ON(osd >= map->max_osd); | |
1677 | if ((map->osd_state[osd] & CEPH_OSD_UP) && | |
1678 | (xorstate & CEPH_OSD_UP)) | |
1679 | pr_info("osd%d down\n", osd); | |
1680 | if ((map->osd_state[osd] & CEPH_OSD_EXISTS) && | |
1681 | (xorstate & CEPH_OSD_EXISTS)) { | |
1682 | pr_info("osd%d does not exist\n", osd); | |
930c5328 ID |
1683 | ret = set_primary_affinity(map, osd, |
1684 | CEPH_OSD_DEFAULT_PRIMARY_AFFINITY); | |
1685 | if (ret) | |
1686 | return ret; | |
1687 | memset(map->osd_addr + osd, 0, sizeof(*map->osd_addr)); | |
1688 | map->osd_state[osd] = 0; | |
1689 | } else { | |
1690 | map->osd_state[osd] ^= xorstate; | |
1691 | } | |
1692 | } | |
1693 | ||
1694 | /* new_up_client */ | |
1695 | *p = new_up_client; | |
1696 | len = ceph_decode_32(p); | |
1697 | while (len--) { | |
1698 | s32 osd; | |
1699 | struct ceph_entity_addr addr; | |
1700 | ||
1701 | osd = ceph_decode_32(p); | |
1702 | ceph_decode_copy(p, &addr, sizeof(addr)); | |
1703 | ceph_decode_addr(&addr); | |
1704 | BUG_ON(osd >= map->max_osd); | |
1705 | pr_info("osd%d up\n", osd); | |
1706 | map->osd_state[osd] |= CEPH_OSD_EXISTS | CEPH_OSD_UP; | |
1707 | map->osd_addr[osd] = addr; | |
1708 | } | |
1709 | ||
1710 | *p = new_weight_end; | |
1711 | return 0; | |
1712 | ||
1713 | e_inval: | |
1714 | return -EINVAL; | |
1715 | } | |
1716 | ||
f24e9980 SW |
1717 | /* |
1718 | * decode and apply an incremental map update. | |
1719 | */ | |
1720 | struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end, | |
0c0a8de1 | 1721 | struct ceph_osdmap *map) |
f24e9980 | 1722 | { |
f24e9980 SW |
1723 | struct ceph_fsid fsid; |
1724 | u32 epoch = 0; | |
1725 | struct ceph_timespec modified; | |
4f6a7e5e SW |
1726 | s32 len; |
1727 | u64 pool; | |
1728 | __s64 new_pool_max; | |
1729 | __s32 new_flags, max; | |
f24e9980 | 1730 | void *start = *p; |
86f1742b | 1731 | int err; |
ec7af972 | 1732 | u8 struct_v; |
f24e9980 | 1733 | |
38a8d560 ID |
1734 | dout("%s %p to %p len %d\n", __func__, *p, end, (int)(end - *p)); |
1735 | ||
ec7af972 ID |
1736 | err = get_osdmap_client_data_v(p, end, "inc", &struct_v); |
1737 | if (err) | |
1738 | goto bad; | |
f24e9980 | 1739 | |
53bbaba9 ID |
1740 | /* fsid, epoch, modified, new_pool_max, new_flags */ |
1741 | ceph_decode_need(p, end, sizeof(fsid) + sizeof(u32) + sizeof(modified) + | |
1742 | sizeof(u64) + sizeof(u32), e_inval); | |
f24e9980 | 1743 | ceph_decode_copy(p, &fsid, sizeof(fsid)); |
c89136ea | 1744 | epoch = ceph_decode_32(p); |
f24e9980 SW |
1745 | BUG_ON(epoch != map->epoch+1); |
1746 | ceph_decode_copy(p, &modified, sizeof(modified)); | |
4f6a7e5e | 1747 | new_pool_max = ceph_decode_64(p); |
c89136ea | 1748 | new_flags = ceph_decode_32(p); |
f24e9980 SW |
1749 | |
1750 | /* full map? */ | |
86f1742b | 1751 | ceph_decode_32_safe(p, end, len, e_inval); |
f24e9980 SW |
1752 | if (len > 0) { |
1753 | dout("apply_incremental full map len %d, %p to %p\n", | |
1754 | len, *p, end); | |
a2505d63 | 1755 | return ceph_osdmap_decode(p, min(*p+len, end)); |
f24e9980 SW |
1756 | } |
1757 | ||
1758 | /* new crush? */ | |
86f1742b | 1759 | ceph_decode_32_safe(p, end, len, e_inval); |
f24e9980 | 1760 | if (len > 0) { |
1b6a78b5 ID |
1761 | err = osdmap_set_crush(map, |
1762 | crush_decode(*p, min(*p + len, end))); | |
1763 | if (err) | |
86f1742b | 1764 | goto bad; |
cebc5be6 | 1765 | *p += len; |
f24e9980 SW |
1766 | } |
1767 | ||
1768 | /* new flags? */ | |
1769 | if (new_flags >= 0) | |
1770 | map->flags = new_flags; | |
4fc51be8 SW |
1771 | if (new_pool_max >= 0) |
1772 | map->pool_max = new_pool_max; | |
f24e9980 | 1773 | |
f24e9980 | 1774 | /* new max? */ |
53bbaba9 | 1775 | ceph_decode_32_safe(p, end, max, e_inval); |
f24e9980 SW |
1776 | if (max >= 0) { |
1777 | err = osdmap_set_max_osd(map, max); | |
86f1742b | 1778 | if (err) |
f24e9980 SW |
1779 | goto bad; |
1780 | } | |
1781 | ||
1782 | map->epoch++; | |
31456665 | 1783 | map->modified = modified; |
f24e9980 | 1784 | |
433fbdd3 ID |
1785 | /* new_pools */ |
1786 | err = decode_new_pools(p, end, map); | |
1787 | if (err) | |
1788 | goto bad; | |
9464d008 | 1789 | |
0f70c7ee ID |
1790 | /* new_pool_names */ |
1791 | err = decode_pool_names(p, end, map); | |
9464d008 ID |
1792 | if (err) |
1793 | goto bad; | |
f24e9980 | 1794 | |
4fc51be8 | 1795 | /* old_pool */ |
86f1742b | 1796 | ceph_decode_32_safe(p, end, len, e_inval); |
4fc51be8 SW |
1797 | while (len--) { |
1798 | struct ceph_pg_pool_info *pi; | |
1799 | ||
86f1742b | 1800 | ceph_decode_64_safe(p, end, pool, e_inval); |
4fc51be8 | 1801 | pi = __lookup_pg_pool(&map->pg_pools, pool); |
2844a76a SW |
1802 | if (pi) |
1803 | __remove_pg_pool(&map->pg_pools, pi); | |
4fc51be8 | 1804 | } |
f24e9980 | 1805 | |
930c5328 | 1806 | /* new_up_client, new_state, new_weight */ |
0bb05da2 | 1807 | err = decode_new_up_state_weight(p, end, struct_v, map); |
930c5328 ID |
1808 | if (err) |
1809 | goto bad; | |
f24e9980 SW |
1810 | |
1811 | /* new_pg_temp */ | |
10db634e ID |
1812 | err = decode_new_pg_temp(p, end, map); |
1813 | if (err) | |
1814 | goto bad; | |
f24e9980 | 1815 | |
d286de79 ID |
1816 | /* new_primary_temp */ |
1817 | if (struct_v >= 1) { | |
1818 | err = decode_new_primary_temp(p, end, map); | |
1819 | if (err) | |
1820 | goto bad; | |
1821 | } | |
1822 | ||
63a6993f ID |
1823 | /* new_primary_affinity */ |
1824 | if (struct_v >= 2) { | |
1825 | err = decode_new_primary_affinity(p, end, map); | |
1826 | if (err) | |
1827 | goto bad; | |
1828 | } | |
1829 | ||
6f428df4 ID |
1830 | if (struct_v >= 3) { |
1831 | /* new_erasure_code_profiles */ | |
1832 | ceph_decode_skip_map_of_map(p, end, string, string, string, | |
00c8ebb3 | 1833 | e_inval); |
6f428df4 | 1834 | /* old_erasure_code_profiles */ |
00c8ebb3 | 1835 | ceph_decode_skip_set(p, end, string, e_inval); |
6f428df4 ID |
1836 | } |
1837 | ||
1838 | if (struct_v >= 4) { | |
1839 | err = decode_new_pg_upmap(p, end, map); | |
1840 | if (err) | |
1841 | goto bad; | |
1842 | ||
1843 | err = decode_old_pg_upmap(p, end, map); | |
1844 | if (err) | |
1845 | goto bad; | |
1846 | ||
1847 | err = decode_new_pg_upmap_items(p, end, map); | |
1848 | if (err) | |
1849 | goto bad; | |
1850 | ||
1851 | err = decode_old_pg_upmap_items(p, end, map); | |
1852 | if (err) | |
1853 | goto bad; | |
1854 | } | |
1855 | ||
f24e9980 SW |
1856 | /* ignore the rest */ |
1857 | *p = end; | |
38a8d560 ID |
1858 | |
1859 | dout("inc osdmap epoch %d max_osd %d\n", map->epoch, map->max_osd); | |
f24e9980 SW |
1860 | return map; |
1861 | ||
86f1742b ID |
1862 | e_inval: |
1863 | err = -EINVAL; | |
f24e9980 | 1864 | bad: |
38a8d560 ID |
1865 | pr_err("corrupt inc osdmap (%d) epoch %d off %d (%p of %p-%p)\n", |
1866 | err, epoch, (int)(*p - start), *p, start, end); | |
9ec7cab1 SW |
1867 | print_hex_dump(KERN_DEBUG, "osdmap: ", |
1868 | DUMP_PREFIX_OFFSET, 16, 1, | |
1869 | start, end - start, true); | |
f24e9980 SW |
1870 | return ERR_PTR(err); |
1871 | } | |
1872 | ||
30c156d9 YZ |
1873 | void ceph_oloc_copy(struct ceph_object_locator *dest, |
1874 | const struct ceph_object_locator *src) | |
1875 | { | |
ca35ffea | 1876 | ceph_oloc_destroy(dest); |
30c156d9 YZ |
1877 | |
1878 | dest->pool = src->pool; | |
1879 | if (src->pool_ns) | |
1880 | dest->pool_ns = ceph_get_string(src->pool_ns); | |
ca35ffea ID |
1881 | else |
1882 | dest->pool_ns = NULL; | |
30c156d9 YZ |
1883 | } |
1884 | EXPORT_SYMBOL(ceph_oloc_copy); | |
1885 | ||
1886 | void ceph_oloc_destroy(struct ceph_object_locator *oloc) | |
1887 | { | |
1888 | ceph_put_string(oloc->pool_ns); | |
1889 | } | |
1890 | EXPORT_SYMBOL(ceph_oloc_destroy); | |
1891 | ||
d30291b9 ID |
1892 | void ceph_oid_copy(struct ceph_object_id *dest, |
1893 | const struct ceph_object_id *src) | |
1894 | { | |
ca35ffea | 1895 | ceph_oid_destroy(dest); |
d30291b9 ID |
1896 | |
1897 | if (src->name != src->inline_name) { | |
1898 | /* very rare, see ceph_object_id definition */ | |
1899 | dest->name = kmalloc(src->name_len + 1, | |
1900 | GFP_NOIO | __GFP_NOFAIL); | |
ca35ffea ID |
1901 | } else { |
1902 | dest->name = dest->inline_name; | |
d30291b9 | 1903 | } |
d30291b9 ID |
1904 | memcpy(dest->name, src->name, src->name_len + 1); |
1905 | dest->name_len = src->name_len; | |
1906 | } | |
1907 | EXPORT_SYMBOL(ceph_oid_copy); | |
1908 | ||
1909 | static __printf(2, 0) | |
1910 | int oid_printf_vargs(struct ceph_object_id *oid, const char *fmt, va_list ap) | |
1911 | { | |
1912 | int len; | |
1913 | ||
1914 | WARN_ON(!ceph_oid_empty(oid)); | |
1915 | ||
1916 | len = vsnprintf(oid->inline_name, sizeof(oid->inline_name), fmt, ap); | |
1917 | if (len >= sizeof(oid->inline_name)) | |
1918 | return len; | |
1919 | ||
1920 | oid->name_len = len; | |
1921 | return 0; | |
1922 | } | |
1923 | ||
1924 | /* | |
1925 | * If oid doesn't fit into inline buffer, BUG. | |
1926 | */ | |
1927 | void ceph_oid_printf(struct ceph_object_id *oid, const char *fmt, ...) | |
1928 | { | |
1929 | va_list ap; | |
1930 | ||
1931 | va_start(ap, fmt); | |
1932 | BUG_ON(oid_printf_vargs(oid, fmt, ap)); | |
1933 | va_end(ap); | |
1934 | } | |
1935 | EXPORT_SYMBOL(ceph_oid_printf); | |
1936 | ||
1937 | static __printf(3, 0) | |
1938 | int oid_aprintf_vargs(struct ceph_object_id *oid, gfp_t gfp, | |
1939 | const char *fmt, va_list ap) | |
1940 | { | |
1941 | va_list aq; | |
1942 | int len; | |
1943 | ||
1944 | va_copy(aq, ap); | |
1945 | len = oid_printf_vargs(oid, fmt, aq); | |
1946 | va_end(aq); | |
1947 | ||
1948 | if (len) { | |
1949 | char *external_name; | |
1950 | ||
1951 | external_name = kmalloc(len + 1, gfp); | |
1952 | if (!external_name) | |
1953 | return -ENOMEM; | |
f24e9980 | 1954 | |
d30291b9 ID |
1955 | oid->name = external_name; |
1956 | WARN_ON(vsnprintf(oid->name, len + 1, fmt, ap) != len); | |
1957 | oid->name_len = len; | |
1958 | } | |
f24e9980 | 1959 | |
d30291b9 ID |
1960 | return 0; |
1961 | } | |
1962 | ||
1963 | /* | |
1964 | * If oid doesn't fit into inline buffer, allocate. | |
1965 | */ | |
1966 | int ceph_oid_aprintf(struct ceph_object_id *oid, gfp_t gfp, | |
1967 | const char *fmt, ...) | |
1968 | { | |
1969 | va_list ap; | |
1970 | int ret; | |
1971 | ||
1972 | va_start(ap, fmt); | |
1973 | ret = oid_aprintf_vargs(oid, gfp, fmt, ap); | |
1974 | va_end(ap); | |
1975 | ||
1976 | return ret; | |
1977 | } | |
1978 | EXPORT_SYMBOL(ceph_oid_aprintf); | |
1979 | ||
1980 | void ceph_oid_destroy(struct ceph_object_id *oid) | |
1981 | { | |
1982 | if (oid->name != oid->inline_name) | |
1983 | kfree(oid->name); | |
1984 | } | |
1985 | EXPORT_SYMBOL(ceph_oid_destroy); | |
f24e9980 | 1986 | |
63244fa1 ID |
1987 | /* |
1988 | * osds only | |
1989 | */ | |
1990 | static bool __osds_equal(const struct ceph_osds *lhs, | |
1991 | const struct ceph_osds *rhs) | |
1992 | { | |
1993 | if (lhs->size == rhs->size && | |
1994 | !memcmp(lhs->osds, rhs->osds, rhs->size * sizeof(rhs->osds[0]))) | |
1995 | return true; | |
1996 | ||
1997 | return false; | |
1998 | } | |
1999 | ||
2000 | /* | |
2001 | * osds + primary | |
2002 | */ | |
2003 | static bool osds_equal(const struct ceph_osds *lhs, | |
2004 | const struct ceph_osds *rhs) | |
2005 | { | |
2006 | if (__osds_equal(lhs, rhs) && | |
2007 | lhs->primary == rhs->primary) | |
2008 | return true; | |
2009 | ||
2010 | return false; | |
2011 | } | |
2012 | ||
6f3bfd45 ID |
2013 | static bool osds_valid(const struct ceph_osds *set) |
2014 | { | |
2015 | /* non-empty set */ | |
2016 | if (set->size > 0 && set->primary >= 0) | |
2017 | return true; | |
2018 | ||
2019 | /* empty can_shift_osds set */ | |
2020 | if (!set->size && set->primary == -1) | |
2021 | return true; | |
2022 | ||
2023 | /* empty !can_shift_osds set - all NONE */ | |
2024 | if (set->size > 0 && set->primary == -1) { | |
2025 | int i; | |
2026 | ||
2027 | for (i = 0; i < set->size; i++) { | |
2028 | if (set->osds[i] != CRUSH_ITEM_NONE) | |
2029 | break; | |
2030 | } | |
2031 | if (i == set->size) | |
2032 | return true; | |
2033 | } | |
2034 | ||
2035 | return false; | |
2036 | } | |
2037 | ||
2038 | void ceph_osds_copy(struct ceph_osds *dest, const struct ceph_osds *src) | |
2039 | { | |
2040 | memcpy(dest->osds, src->osds, src->size * sizeof(src->osds[0])); | |
2041 | dest->size = src->size; | |
2042 | dest->primary = src->primary; | |
2043 | } | |
2044 | ||
7de030d6 ID |
2045 | bool ceph_pg_is_split(const struct ceph_pg *pgid, u32 old_pg_num, |
2046 | u32 new_pg_num) | |
63244fa1 ID |
2047 | { |
2048 | int old_bits = calc_bits_of(old_pg_num); | |
2049 | int old_mask = (1 << old_bits) - 1; | |
2050 | int n; | |
2051 | ||
2052 | WARN_ON(pgid->seed >= old_pg_num); | |
2053 | if (new_pg_num <= old_pg_num) | |
2054 | return false; | |
2055 | ||
2056 | for (n = 1; ; n++) { | |
2057 | int next_bit = n << (old_bits - 1); | |
2058 | u32 s = next_bit | pgid->seed; | |
2059 | ||
2060 | if (s < old_pg_num || s == pgid->seed) | |
2061 | continue; | |
2062 | if (s >= new_pg_num) | |
2063 | break; | |
2064 | ||
2065 | s = ceph_stable_mod(s, old_pg_num, old_mask); | |
2066 | if (s == pgid->seed) | |
2067 | return true; | |
2068 | } | |
2069 | ||
2070 | return false; | |
2071 | } | |
2072 | ||
2073 | bool ceph_is_new_interval(const struct ceph_osds *old_acting, | |
2074 | const struct ceph_osds *new_acting, | |
2075 | const struct ceph_osds *old_up, | |
2076 | const struct ceph_osds *new_up, | |
2077 | int old_size, | |
2078 | int new_size, | |
2079 | int old_min_size, | |
2080 | int new_min_size, | |
2081 | u32 old_pg_num, | |
2082 | u32 new_pg_num, | |
2083 | bool old_sort_bitwise, | |
2084 | bool new_sort_bitwise, | |
ae78dd81 ID |
2085 | bool old_recovery_deletes, |
2086 | bool new_recovery_deletes, | |
63244fa1 ID |
2087 | const struct ceph_pg *pgid) |
2088 | { | |
2089 | return !osds_equal(old_acting, new_acting) || | |
2090 | !osds_equal(old_up, new_up) || | |
2091 | old_size != new_size || | |
2092 | old_min_size != new_min_size || | |
7de030d6 | 2093 | ceph_pg_is_split(pgid, old_pg_num, new_pg_num) || |
ae78dd81 ID |
2094 | old_sort_bitwise != new_sort_bitwise || |
2095 | old_recovery_deletes != new_recovery_deletes; | |
63244fa1 ID |
2096 | } |
2097 | ||
2098 | static int calc_pg_rank(int osd, const struct ceph_osds *acting) | |
2099 | { | |
2100 | int i; | |
2101 | ||
2102 | for (i = 0; i < acting->size; i++) { | |
2103 | if (acting->osds[i] == osd) | |
2104 | return i; | |
2105 | } | |
2106 | ||
2107 | return -1; | |
2108 | } | |
2109 | ||
2110 | static bool primary_changed(const struct ceph_osds *old_acting, | |
2111 | const struct ceph_osds *new_acting) | |
2112 | { | |
2113 | if (!old_acting->size && !new_acting->size) | |
2114 | return false; /* both still empty */ | |
2115 | ||
2116 | if (!old_acting->size ^ !new_acting->size) | |
2117 | return true; /* was empty, now not, or vice versa */ | |
2118 | ||
2119 | if (old_acting->primary != new_acting->primary) | |
2120 | return true; /* primary changed */ | |
2121 | ||
2122 | if (calc_pg_rank(old_acting->primary, old_acting) != | |
2123 | calc_pg_rank(new_acting->primary, new_acting)) | |
2124 | return true; | |
2125 | ||
2126 | return false; /* same primary (tho replicas may have changed) */ | |
2127 | } | |
2128 | ||
2129 | bool ceph_osds_changed(const struct ceph_osds *old_acting, | |
2130 | const struct ceph_osds *new_acting, | |
2131 | bool any_change) | |
2132 | { | |
2133 | if (primary_changed(old_acting, new_acting)) | |
2134 | return true; | |
2135 | ||
2136 | if (any_change && !__osds_equal(old_acting, new_acting)) | |
2137 | return true; | |
2138 | ||
2139 | return false; | |
2140 | } | |
2141 | ||
f24e9980 | 2142 | /* |
d9591f5e ID |
2143 | * Map an object into a PG. |
2144 | * | |
2145 | * Should only be called with target_oid and target_oloc (as opposed to | |
2146 | * base_oid and base_oloc), since tiering isn't taken into account. | |
f24e9980 | 2147 | */ |
df28152d ID |
2148 | int __ceph_object_locator_to_pg(struct ceph_pg_pool_info *pi, |
2149 | const struct ceph_object_id *oid, | |
2150 | const struct ceph_object_locator *oloc, | |
2151 | struct ceph_pg *raw_pgid) | |
f24e9980 | 2152 | { |
df28152d | 2153 | WARN_ON(pi->id != oloc->pool); |
f24e9980 | 2154 | |
30c156d9 YZ |
2155 | if (!oloc->pool_ns) { |
2156 | raw_pgid->pool = oloc->pool; | |
2157 | raw_pgid->seed = ceph_str_hash(pi->object_hash, oid->name, | |
2158 | oid->name_len); | |
2159 | dout("%s %s -> raw_pgid %llu.%x\n", __func__, oid->name, | |
2160 | raw_pgid->pool, raw_pgid->seed); | |
2161 | } else { | |
2162 | char stack_buf[256]; | |
2163 | char *buf = stack_buf; | |
2164 | int nsl = oloc->pool_ns->len; | |
2165 | size_t total = nsl + 1 + oid->name_len; | |
2166 | ||
2167 | if (total > sizeof(stack_buf)) { | |
2168 | buf = kmalloc(total, GFP_NOIO); | |
2169 | if (!buf) | |
2170 | return -ENOMEM; | |
2171 | } | |
2172 | memcpy(buf, oloc->pool_ns->str, nsl); | |
2173 | buf[nsl] = '\037'; | |
2174 | memcpy(buf + nsl + 1, oid->name, oid->name_len); | |
2175 | raw_pgid->pool = oloc->pool; | |
2176 | raw_pgid->seed = ceph_str_hash(pi->object_hash, buf, total); | |
2177 | if (buf != stack_buf) | |
2178 | kfree(buf); | |
2179 | dout("%s %s ns %.*s -> raw_pgid %llu.%x\n", __func__, | |
2180 | oid->name, nsl, oloc->pool_ns->str, | |
2181 | raw_pgid->pool, raw_pgid->seed); | |
2182 | } | |
f24e9980 SW |
2183 | return 0; |
2184 | } | |
df28152d ID |
2185 | |
2186 | int ceph_object_locator_to_pg(struct ceph_osdmap *osdmap, | |
2187 | const struct ceph_object_id *oid, | |
2188 | const struct ceph_object_locator *oloc, | |
2189 | struct ceph_pg *raw_pgid) | |
2190 | { | |
2191 | struct ceph_pg_pool_info *pi; | |
2192 | ||
2193 | pi = ceph_pg_pool_by_id(osdmap, oloc->pool); | |
2194 | if (!pi) | |
2195 | return -ENOENT; | |
2196 | ||
2197 | return __ceph_object_locator_to_pg(pi, oid, oloc, raw_pgid); | |
2198 | } | |
d9591f5e | 2199 | EXPORT_SYMBOL(ceph_object_locator_to_pg); |
f24e9980 | 2200 | |
6f3bfd45 ID |
2201 | /* |
2202 | * Map a raw PG (full precision ps) into an actual PG. | |
2203 | */ | |
2204 | static void raw_pg_to_pg(struct ceph_pg_pool_info *pi, | |
2205 | const struct ceph_pg *raw_pgid, | |
2206 | struct ceph_pg *pgid) | |
2207 | { | |
2208 | pgid->pool = raw_pgid->pool; | |
2209 | pgid->seed = ceph_stable_mod(raw_pgid->seed, pi->pg_num, | |
2210 | pi->pg_num_mask); | |
2211 | } | |
2212 | ||
2213 | /* | |
2214 | * Map a raw PG (full precision ps) into a placement ps (placement | |
2215 | * seed). Include pool id in that value so that different pools don't | |
2216 | * use the same seeds. | |
2217 | */ | |
2218 | static u32 raw_pg_to_pps(struct ceph_pg_pool_info *pi, | |
2219 | const struct ceph_pg *raw_pgid) | |
2220 | { | |
2221 | if (pi->flags & CEPH_POOL_FLAG_HASHPSPOOL) { | |
2222 | /* hash pool id and seed so that pool PGs do not overlap */ | |
2223 | return crush_hash32_2(CRUSH_HASH_RJENKINS1, | |
2224 | ceph_stable_mod(raw_pgid->seed, | |
2225 | pi->pgp_num, | |
2226 | pi->pgp_num_mask), | |
2227 | raw_pgid->pool); | |
2228 | } else { | |
2229 | /* | |
2230 | * legacy behavior: add ps and pool together. this is | |
2231 | * not a great approach because the PGs from each pool | |
2232 | * will overlap on top of each other: 0.5 == 1.4 == | |
2233 | * 2.3 == ... | |
2234 | */ | |
2235 | return ceph_stable_mod(raw_pgid->seed, pi->pgp_num, | |
2236 | pi->pgp_num_mask) + | |
2237 | (unsigned)raw_pgid->pool; | |
2238 | } | |
2239 | } | |
2240 | ||
e17e8969 ID |
2241 | /* |
2242 | * Magic value used for a "default" fallback choose_args, used if the | |
2243 | * crush_choose_arg_map passed to do_crush() does not exist. If this | |
2244 | * also doesn't exist, fall back to canonical weights. | |
2245 | */ | |
2246 | #define CEPH_DEFAULT_CHOOSE_ARGS -1 | |
2247 | ||
9d521470 ID |
2248 | static int do_crush(struct ceph_osdmap *map, int ruleno, int x, |
2249 | int *result, int result_max, | |
5cf9c4a9 | 2250 | const __u32 *weight, int weight_max, |
e17e8969 | 2251 | s64 choose_args_index) |
e8ef19c4 | 2252 | { |
5cf9c4a9 | 2253 | struct crush_choose_arg_map *arg_map; |
9d521470 ID |
2254 | int r; |
2255 | ||
2256 | BUG_ON(result_max > CEPH_PG_MAX_SIZE); | |
2257 | ||
5cf9c4a9 ID |
2258 | arg_map = lookup_choose_arg_map(&map->crush->choose_args, |
2259 | choose_args_index); | |
e17e8969 ID |
2260 | if (!arg_map) |
2261 | arg_map = lookup_choose_arg_map(&map->crush->choose_args, | |
2262 | CEPH_DEFAULT_CHOOSE_ARGS); | |
5cf9c4a9 | 2263 | |
743efcff | 2264 | mutex_lock(&map->crush_workspace_mutex); |
9d521470 | 2265 | r = crush_do_rule(map->crush, ruleno, x, result, result_max, |
5cf9c4a9 ID |
2266 | weight, weight_max, map->crush_workspace, |
2267 | arg_map ? arg_map->args : NULL); | |
743efcff | 2268 | mutex_unlock(&map->crush_workspace_mutex); |
e8ef19c4 | 2269 | |
9d521470 | 2270 | return r; |
e8ef19c4 ID |
2271 | } |
2272 | ||
1c2e7b45 ID |
2273 | static void remove_nonexistent_osds(struct ceph_osdmap *osdmap, |
2274 | struct ceph_pg_pool_info *pi, | |
2275 | struct ceph_osds *set) | |
2276 | { | |
2277 | int i; | |
2278 | ||
2279 | if (ceph_can_shift_osds(pi)) { | |
2280 | int removed = 0; | |
2281 | ||
2282 | /* shift left */ | |
2283 | for (i = 0; i < set->size; i++) { | |
2284 | if (!ceph_osd_exists(osdmap, set->osds[i])) { | |
2285 | removed++; | |
2286 | continue; | |
2287 | } | |
2288 | if (removed) | |
2289 | set->osds[i - removed] = set->osds[i]; | |
2290 | } | |
2291 | set->size -= removed; | |
2292 | } else { | |
2293 | /* set dne devices to NONE */ | |
2294 | for (i = 0; i < set->size; i++) { | |
2295 | if (!ceph_osd_exists(osdmap, set->osds[i])) | |
2296 | set->osds[i] = CRUSH_ITEM_NONE; | |
2297 | } | |
2298 | } | |
2299 | } | |
2300 | ||
2bd93d4d | 2301 | /* |
1c2e7b45 ID |
2302 | * Calculate raw set (CRUSH output) for given PG and filter out |
2303 | * nonexistent OSDs. ->primary is undefined for a raw set. | |
2bd93d4d | 2304 | * |
6f3bfd45 | 2305 | * Placement seed (CRUSH input) is returned through @ppps. |
2bd93d4d | 2306 | */ |
6f3bfd45 ID |
2307 | static void pg_to_raw_osds(struct ceph_osdmap *osdmap, |
2308 | struct ceph_pg_pool_info *pi, | |
2309 | const struct ceph_pg *raw_pgid, | |
2310 | struct ceph_osds *raw, | |
2311 | u32 *ppps) | |
2bd93d4d | 2312 | { |
6f3bfd45 | 2313 | u32 pps = raw_pg_to_pps(pi, raw_pgid); |
2bd93d4d ID |
2314 | int ruleno; |
2315 | int len; | |
2316 | ||
6f3bfd45 ID |
2317 | ceph_osds_init(raw); |
2318 | if (ppps) | |
2319 | *ppps = pps; | |
2320 | ||
2321 | ruleno = crush_find_rule(osdmap->crush, pi->crush_ruleset, pi->type, | |
2322 | pi->size); | |
2bd93d4d ID |
2323 | if (ruleno < 0) { |
2324 | pr_err("no crush rule: pool %lld ruleset %d type %d size %d\n", | |
6f3bfd45 ID |
2325 | pi->id, pi->crush_ruleset, pi->type, pi->size); |
2326 | return; | |
2bd93d4d ID |
2327 | } |
2328 | ||
ef9324bb ID |
2329 | if (pi->size > ARRAY_SIZE(raw->osds)) { |
2330 | pr_err_ratelimited("pool %lld ruleset %d type %d too wide: size %d > %zu\n", | |
2331 | pi->id, pi->crush_ruleset, pi->type, pi->size, | |
2332 | ARRAY_SIZE(raw->osds)); | |
2333 | return; | |
2334 | } | |
2335 | ||
2336 | len = do_crush(osdmap, ruleno, pps, raw->osds, pi->size, | |
5cf9c4a9 | 2337 | osdmap->osd_weight, osdmap->max_osd, pi->id); |
2bd93d4d ID |
2338 | if (len < 0) { |
2339 | pr_err("error %d from crush rule %d: pool %lld ruleset %d type %d size %d\n", | |
6f3bfd45 ID |
2340 | len, ruleno, pi->id, pi->crush_ruleset, pi->type, |
2341 | pi->size); | |
2342 | return; | |
2bd93d4d ID |
2343 | } |
2344 | ||
6f3bfd45 | 2345 | raw->size = len; |
1c2e7b45 ID |
2346 | remove_nonexistent_osds(osdmap, pi, raw); |
2347 | } | |
2348 | ||
2349 | /* apply pg_upmap[_items] mappings */ | |
2350 | static void apply_upmap(struct ceph_osdmap *osdmap, | |
2351 | const struct ceph_pg *pgid, | |
2352 | struct ceph_osds *raw) | |
2353 | { | |
2354 | struct ceph_pg_mapping *pg; | |
2355 | int i, j; | |
2356 | ||
2357 | pg = lookup_pg_mapping(&osdmap->pg_upmap, pgid); | |
2358 | if (pg) { | |
2359 | /* make sure targets aren't marked out */ | |
2360 | for (i = 0; i < pg->pg_upmap.len; i++) { | |
2361 | int osd = pg->pg_upmap.osds[i]; | |
2362 | ||
2363 | if (osd != CRUSH_ITEM_NONE && | |
2364 | osd < osdmap->max_osd && | |
2365 | osdmap->osd_weight[osd] == 0) { | |
2366 | /* reject/ignore explicit mapping */ | |
2367 | return; | |
2368 | } | |
2369 | } | |
2370 | for (i = 0; i < pg->pg_upmap.len; i++) | |
2371 | raw->osds[i] = pg->pg_upmap.osds[i]; | |
2372 | raw->size = pg->pg_upmap.len; | |
f53b7665 | 2373 | /* check and apply pg_upmap_items, if any */ |
1c2e7b45 ID |
2374 | } |
2375 | ||
2376 | pg = lookup_pg_mapping(&osdmap->pg_upmap_items, pgid); | |
2377 | if (pg) { | |
29a0cfbf ID |
2378 | /* |
2379 | * Note: this approach does not allow a bidirectional swap, | |
2380 | * e.g., [[1,2],[2,1]] applied to [0,1,2] -> [0,2,1]. | |
2381 | */ | |
2382 | for (i = 0; i < pg->pg_upmap_items.len; i++) { | |
2383 | int from = pg->pg_upmap_items.from_to[i][0]; | |
2384 | int to = pg->pg_upmap_items.from_to[i][1]; | |
2385 | int pos = -1; | |
2386 | bool exists = false; | |
2387 | ||
2388 | /* make sure replacement doesn't already appear */ | |
2389 | for (j = 0; j < raw->size; j++) { | |
2390 | int osd = raw->osds[j]; | |
2391 | ||
2392 | if (osd == to) { | |
2393 | exists = true; | |
1c2e7b45 ID |
2394 | break; |
2395 | } | |
29a0cfbf ID |
2396 | /* ignore mapping if target is marked out */ |
2397 | if (osd == from && pos < 0 && | |
2398 | !(to != CRUSH_ITEM_NONE && | |
2399 | to < osdmap->max_osd && | |
2400 | osdmap->osd_weight[to] == 0)) { | |
2401 | pos = j; | |
2402 | } | |
1c2e7b45 | 2403 | } |
29a0cfbf ID |
2404 | if (!exists && pos >= 0) |
2405 | raw->osds[pos] = to; | |
1c2e7b45 ID |
2406 | } |
2407 | } | |
2bd93d4d ID |
2408 | } |
2409 | ||
2410 | /* | |
6f3bfd45 ID |
2411 | * Given raw set, calculate up set and up primary. By definition of an |
2412 | * up set, the result won't contain nonexistent or down OSDs. | |
2bd93d4d | 2413 | * |
6f3bfd45 ID |
2414 | * This is done in-place - on return @set is the up set. If it's |
2415 | * empty, ->primary will remain undefined. | |
2bd93d4d | 2416 | */ |
6f3bfd45 ID |
2417 | static void raw_to_up_osds(struct ceph_osdmap *osdmap, |
2418 | struct ceph_pg_pool_info *pi, | |
2419 | struct ceph_osds *set) | |
2bd93d4d | 2420 | { |
2bd93d4d ID |
2421 | int i; |
2422 | ||
6f3bfd45 ID |
2423 | /* ->primary is undefined for a raw set */ |
2424 | BUG_ON(set->primary != -1); | |
2425 | ||
2426 | if (ceph_can_shift_osds(pi)) { | |
2bd93d4d ID |
2427 | int removed = 0; |
2428 | ||
6f3bfd45 ID |
2429 | /* shift left */ |
2430 | for (i = 0; i < set->size; i++) { | |
2431 | if (ceph_osd_is_down(osdmap, set->osds[i])) { | |
2bd93d4d ID |
2432 | removed++; |
2433 | continue; | |
2434 | } | |
2435 | if (removed) | |
6f3bfd45 | 2436 | set->osds[i - removed] = set->osds[i]; |
2bd93d4d | 2437 | } |
6f3bfd45 ID |
2438 | set->size -= removed; |
2439 | if (set->size > 0) | |
2440 | set->primary = set->osds[0]; | |
2bd93d4d | 2441 | } else { |
6f3bfd45 ID |
2442 | /* set down/dne devices to NONE */ |
2443 | for (i = set->size - 1; i >= 0; i--) { | |
2444 | if (ceph_osd_is_down(osdmap, set->osds[i])) | |
2445 | set->osds[i] = CRUSH_ITEM_NONE; | |
2bd93d4d | 2446 | else |
6f3bfd45 | 2447 | set->primary = set->osds[i]; |
2bd93d4d ID |
2448 | } |
2449 | } | |
2bd93d4d ID |
2450 | } |
2451 | ||
6f3bfd45 ID |
2452 | static void apply_primary_affinity(struct ceph_osdmap *osdmap, |
2453 | struct ceph_pg_pool_info *pi, | |
2454 | u32 pps, | |
2455 | struct ceph_osds *up) | |
47ec1f3c ID |
2456 | { |
2457 | int i; | |
2458 | int pos = -1; | |
2459 | ||
2460 | /* | |
2461 | * Do we have any non-default primary_affinity values for these | |
2462 | * osds? | |
2463 | */ | |
2464 | if (!osdmap->osd_primary_affinity) | |
2465 | return; | |
2466 | ||
6f3bfd45 ID |
2467 | for (i = 0; i < up->size; i++) { |
2468 | int osd = up->osds[i]; | |
92b2e751 ID |
2469 | |
2470 | if (osd != CRUSH_ITEM_NONE && | |
2471 | osdmap->osd_primary_affinity[osd] != | |
47ec1f3c ID |
2472 | CEPH_OSD_DEFAULT_PRIMARY_AFFINITY) { |
2473 | break; | |
2474 | } | |
2475 | } | |
6f3bfd45 | 2476 | if (i == up->size) |
47ec1f3c ID |
2477 | return; |
2478 | ||
2479 | /* | |
2480 | * Pick the primary. Feed both the seed (for the pg) and the | |
2481 | * osd into the hash/rng so that a proportional fraction of an | |
2482 | * osd's pgs get rejected as primary. | |
2483 | */ | |
6f3bfd45 ID |
2484 | for (i = 0; i < up->size; i++) { |
2485 | int osd = up->osds[i]; | |
47ec1f3c ID |
2486 | u32 aff; |
2487 | ||
47ec1f3c ID |
2488 | if (osd == CRUSH_ITEM_NONE) |
2489 | continue; | |
2490 | ||
2491 | aff = osdmap->osd_primary_affinity[osd]; | |
2492 | if (aff < CEPH_OSD_MAX_PRIMARY_AFFINITY && | |
2493 | (crush_hash32_2(CRUSH_HASH_RJENKINS1, | |
2494 | pps, osd) >> 16) >= aff) { | |
2495 | /* | |
2496 | * We chose not to use this primary. Note it | |
2497 | * anyway as a fallback in case we don't pick | |
2498 | * anyone else, but keep looking. | |
2499 | */ | |
2500 | if (pos < 0) | |
2501 | pos = i; | |
2502 | } else { | |
2503 | pos = i; | |
2504 | break; | |
2505 | } | |
2506 | } | |
2507 | if (pos < 0) | |
2508 | return; | |
2509 | ||
6f3bfd45 | 2510 | up->primary = up->osds[pos]; |
47ec1f3c | 2511 | |
6f3bfd45 | 2512 | if (ceph_can_shift_osds(pi) && pos > 0) { |
47ec1f3c ID |
2513 | /* move the new primary to the front */ |
2514 | for (i = pos; i > 0; i--) | |
6f3bfd45 ID |
2515 | up->osds[i] = up->osds[i - 1]; |
2516 | up->osds[0] = up->primary; | |
47ec1f3c ID |
2517 | } |
2518 | } | |
2519 | ||
45966c34 | 2520 | /* |
6f3bfd45 | 2521 | * Get pg_temp and primary_temp mappings for given PG. |
45966c34 | 2522 | * |
6f3bfd45 ID |
2523 | * Note that a PG may have none, only pg_temp, only primary_temp or |
2524 | * both pg_temp and primary_temp mappings. This means @temp isn't | |
2525 | * always a valid OSD set on return: in the "only primary_temp" case, | |
2526 | * @temp will have its ->primary >= 0 but ->size == 0. | |
45966c34 | 2527 | */ |
6f3bfd45 ID |
2528 | static void get_temp_osds(struct ceph_osdmap *osdmap, |
2529 | struct ceph_pg_pool_info *pi, | |
463bb8da | 2530 | const struct ceph_pg *pgid, |
6f3bfd45 | 2531 | struct ceph_osds *temp) |
45966c34 ID |
2532 | { |
2533 | struct ceph_pg_mapping *pg; | |
45966c34 ID |
2534 | int i; |
2535 | ||
6f3bfd45 | 2536 | ceph_osds_init(temp); |
45966c34 ID |
2537 | |
2538 | /* pg_temp? */ | |
463bb8da | 2539 | pg = lookup_pg_mapping(&osdmap->pg_temp, pgid); |
45966c34 | 2540 | if (pg) { |
45966c34 ID |
2541 | for (i = 0; i < pg->pg_temp.len; i++) { |
2542 | if (ceph_osd_is_down(osdmap, pg->pg_temp.osds[i])) { | |
6f3bfd45 | 2543 | if (ceph_can_shift_osds(pi)) |
45966c34 | 2544 | continue; |
6f3bfd45 ID |
2545 | |
2546 | temp->osds[temp->size++] = CRUSH_ITEM_NONE; | |
45966c34 | 2547 | } else { |
6f3bfd45 | 2548 | temp->osds[temp->size++] = pg->pg_temp.osds[i]; |
45966c34 ID |
2549 | } |
2550 | } | |
2551 | ||
2552 | /* apply pg_temp's primary */ | |
6f3bfd45 ID |
2553 | for (i = 0; i < temp->size; i++) { |
2554 | if (temp->osds[i] != CRUSH_ITEM_NONE) { | |
2555 | temp->primary = temp->osds[i]; | |
45966c34 ID |
2556 | break; |
2557 | } | |
2558 | } | |
45966c34 ID |
2559 | } |
2560 | ||
5e8d4d36 | 2561 | /* primary_temp? */ |
463bb8da | 2562 | pg = lookup_pg_mapping(&osdmap->primary_temp, pgid); |
5e8d4d36 | 2563 | if (pg) |
6f3bfd45 | 2564 | temp->primary = pg->primary_temp.osd; |
45966c34 ID |
2565 | } |
2566 | ||
d85b7056 | 2567 | /* |
6f3bfd45 | 2568 | * Map a PG to its acting set as well as its up set. |
ac972230 | 2569 | * |
6f3bfd45 ID |
2570 | * Acting set is used for data mapping purposes, while up set can be |
2571 | * recorded for detecting interval changes and deciding whether to | |
2572 | * resend a request. | |
d85b7056 | 2573 | */ |
6f3bfd45 | 2574 | void ceph_pg_to_up_acting_osds(struct ceph_osdmap *osdmap, |
df28152d | 2575 | struct ceph_pg_pool_info *pi, |
6f3bfd45 ID |
2576 | const struct ceph_pg *raw_pgid, |
2577 | struct ceph_osds *up, | |
2578 | struct ceph_osds *acting) | |
d85b7056 | 2579 | { |
463bb8da | 2580 | struct ceph_pg pgid; |
ac972230 | 2581 | u32 pps; |
d85b7056 | 2582 | |
df28152d | 2583 | WARN_ON(pi->id != raw_pgid->pool); |
463bb8da | 2584 | raw_pg_to_pg(pi, raw_pgid, &pgid); |
d85b7056 | 2585 | |
6f3bfd45 | 2586 | pg_to_raw_osds(osdmap, pi, raw_pgid, up, &pps); |
1c2e7b45 | 2587 | apply_upmap(osdmap, &pgid, up); |
6f3bfd45 ID |
2588 | raw_to_up_osds(osdmap, pi, up); |
2589 | apply_primary_affinity(osdmap, pi, pps, up); | |
463bb8da | 2590 | get_temp_osds(osdmap, pi, &pgid, acting); |
6f3bfd45 ID |
2591 | if (!acting->size) { |
2592 | memcpy(acting->osds, up->osds, up->size * sizeof(up->osds[0])); | |
2593 | acting->size = up->size; | |
2594 | if (acting->primary == -1) | |
2595 | acting->primary = up->primary; | |
8008ab10 | 2596 | } |
6f3bfd45 | 2597 | WARN_ON(!osds_valid(up) || !osds_valid(acting)); |
d85b7056 SW |
2598 | } |
2599 | ||
dc98ff72 | 2600 | bool ceph_pg_to_primary_shard(struct ceph_osdmap *osdmap, |
df28152d | 2601 | struct ceph_pg_pool_info *pi, |
dc98ff72 ID |
2602 | const struct ceph_pg *raw_pgid, |
2603 | struct ceph_spg *spgid) | |
2604 | { | |
dc98ff72 ID |
2605 | struct ceph_pg pgid; |
2606 | struct ceph_osds up, acting; | |
2607 | int i; | |
2608 | ||
df28152d | 2609 | WARN_ON(pi->id != raw_pgid->pool); |
dc98ff72 ID |
2610 | raw_pg_to_pg(pi, raw_pgid, &pgid); |
2611 | ||
2612 | if (ceph_can_shift_osds(pi)) { | |
2613 | spgid->pgid = pgid; /* struct */ | |
2614 | spgid->shard = CEPH_SPG_NOSHARD; | |
2615 | return true; | |
2616 | } | |
2617 | ||
df28152d | 2618 | ceph_pg_to_up_acting_osds(osdmap, pi, &pgid, &up, &acting); |
dc98ff72 ID |
2619 | for (i = 0; i < acting.size; i++) { |
2620 | if (acting.osds[i] == acting.primary) { | |
2621 | spgid->pgid = pgid; /* struct */ | |
2622 | spgid->shard = i; | |
2623 | return true; | |
2624 | } | |
2625 | } | |
2626 | ||
2627 | return false; | |
2628 | } | |
2629 | ||
f24e9980 | 2630 | /* |
f81f1633 | 2631 | * Return acting primary for given PG, or -1 if none. |
f24e9980 | 2632 | */ |
f81f1633 ID |
2633 | int ceph_pg_to_acting_primary(struct ceph_osdmap *osdmap, |
2634 | const struct ceph_pg *raw_pgid) | |
f24e9980 | 2635 | { |
df28152d | 2636 | struct ceph_pg_pool_info *pi; |
6f3bfd45 | 2637 | struct ceph_osds up, acting; |
f24e9980 | 2638 | |
df28152d ID |
2639 | pi = ceph_pg_pool_by_id(osdmap, raw_pgid->pool); |
2640 | if (!pi) | |
2641 | return -1; | |
2642 | ||
2643 | ceph_pg_to_up_acting_osds(osdmap, pi, raw_pgid, &up, &acting); | |
6f3bfd45 | 2644 | return acting.primary; |
f24e9980 | 2645 | } |
f81f1633 | 2646 | EXPORT_SYMBOL(ceph_pg_to_acting_primary); |