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Commit | Line | Data |
---|---|---|
f24e9980 | 1 | |
3d14c5d2 | 2 | #include <linux/ceph/ceph_debug.h> |
5a0e3ad6 | 3 | |
3d14c5d2 | 4 | #include <linux/module.h> |
5a0e3ad6 | 5 | #include <linux/slab.h> |
f24e9980 SW |
6 | #include <asm/div64.h> |
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 SW |
13 | |
14 | char *ceph_osdmap_state_str(char *str, int len, int state) | |
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 | ||
546f04ef SW |
141 | static int skip_name_map(void **p, void *end) |
142 | { | |
143 | int len; | |
144 | ceph_decode_32_safe(p, end, len ,bad); | |
145 | while (len--) { | |
146 | int strlen; | |
147 | *p += sizeof(u32); | |
148 | ceph_decode_32_safe(p, end, strlen, bad); | |
149 | *p += strlen; | |
150 | } | |
151 | return 0; | |
152 | bad: | |
153 | return -EINVAL; | |
154 | } | |
155 | ||
f24e9980 SW |
156 | static struct crush_map *crush_decode(void *pbyval, void *end) |
157 | { | |
158 | struct crush_map *c; | |
159 | int err = -EINVAL; | |
160 | int i, j; | |
161 | void **p = &pbyval; | |
162 | void *start = pbyval; | |
163 | u32 magic; | |
546f04ef | 164 | u32 num_name_maps; |
f24e9980 SW |
165 | |
166 | dout("crush_decode %p to %p len %d\n", *p, end, (int)(end - *p)); | |
167 | ||
168 | c = kzalloc(sizeof(*c), GFP_NOFS); | |
169 | if (c == NULL) | |
170 | return ERR_PTR(-ENOMEM); | |
171 | ||
546f04ef SW |
172 | /* set tunables to default values */ |
173 | c->choose_local_tries = 2; | |
174 | c->choose_local_fallback_tries = 5; | |
175 | c->choose_total_tries = 19; | |
1604f488 | 176 | c->chooseleaf_descend_once = 0; |
546f04ef | 177 | |
f24e9980 | 178 | ceph_decode_need(p, end, 4*sizeof(u32), bad); |
c89136ea | 179 | magic = ceph_decode_32(p); |
f24e9980 SW |
180 | if (magic != CRUSH_MAGIC) { |
181 | pr_err("crush_decode magic %x != current %x\n", | |
95c96174 | 182 | (unsigned int)magic, (unsigned int)CRUSH_MAGIC); |
f24e9980 SW |
183 | goto bad; |
184 | } | |
c89136ea SW |
185 | c->max_buckets = ceph_decode_32(p); |
186 | c->max_rules = ceph_decode_32(p); | |
187 | c->max_devices = ceph_decode_32(p); | |
f24e9980 | 188 | |
f24e9980 SW |
189 | c->buckets = kcalloc(c->max_buckets, sizeof(*c->buckets), GFP_NOFS); |
190 | if (c->buckets == NULL) | |
191 | goto badmem; | |
192 | c->rules = kcalloc(c->max_rules, sizeof(*c->rules), GFP_NOFS); | |
193 | if (c->rules == NULL) | |
194 | goto badmem; | |
195 | ||
196 | /* buckets */ | |
197 | for (i = 0; i < c->max_buckets; i++) { | |
198 | int size = 0; | |
199 | u32 alg; | |
200 | struct crush_bucket *b; | |
201 | ||
202 | ceph_decode_32_safe(p, end, alg, bad); | |
203 | if (alg == 0) { | |
204 | c->buckets[i] = NULL; | |
205 | continue; | |
206 | } | |
207 | dout("crush_decode bucket %d off %x %p to %p\n", | |
208 | i, (int)(*p-start), *p, end); | |
209 | ||
210 | switch (alg) { | |
211 | case CRUSH_BUCKET_UNIFORM: | |
212 | size = sizeof(struct crush_bucket_uniform); | |
213 | break; | |
214 | case CRUSH_BUCKET_LIST: | |
215 | size = sizeof(struct crush_bucket_list); | |
216 | break; | |
217 | case CRUSH_BUCKET_TREE: | |
218 | size = sizeof(struct crush_bucket_tree); | |
219 | break; | |
220 | case CRUSH_BUCKET_STRAW: | |
221 | size = sizeof(struct crush_bucket_straw); | |
222 | break; | |
958a2765 ID |
223 | case CRUSH_BUCKET_STRAW2: |
224 | size = sizeof(struct crush_bucket_straw2); | |
225 | break; | |
f24e9980 | 226 | default: |
30dc6381 | 227 | err = -EINVAL; |
f24e9980 SW |
228 | goto bad; |
229 | } | |
230 | BUG_ON(size == 0); | |
231 | b = c->buckets[i] = kzalloc(size, GFP_NOFS); | |
232 | if (b == NULL) | |
233 | goto badmem; | |
234 | ||
235 | ceph_decode_need(p, end, 4*sizeof(u32), bad); | |
c89136ea SW |
236 | b->id = ceph_decode_32(p); |
237 | b->type = ceph_decode_16(p); | |
fb690390 SW |
238 | b->alg = ceph_decode_8(p); |
239 | b->hash = ceph_decode_8(p); | |
c89136ea SW |
240 | b->weight = ceph_decode_32(p); |
241 | b->size = ceph_decode_32(p); | |
f24e9980 SW |
242 | |
243 | dout("crush_decode bucket size %d off %x %p to %p\n", | |
244 | b->size, (int)(*p-start), *p, end); | |
245 | ||
246 | b->items = kcalloc(b->size, sizeof(__s32), GFP_NOFS); | |
247 | if (b->items == NULL) | |
248 | goto badmem; | |
249 | b->perm = kcalloc(b->size, sizeof(u32), GFP_NOFS); | |
250 | if (b->perm == NULL) | |
251 | goto badmem; | |
252 | b->perm_n = 0; | |
253 | ||
254 | ceph_decode_need(p, end, b->size*sizeof(u32), bad); | |
255 | for (j = 0; j < b->size; j++) | |
c89136ea | 256 | b->items[j] = ceph_decode_32(p); |
f24e9980 SW |
257 | |
258 | switch (b->alg) { | |
259 | case CRUSH_BUCKET_UNIFORM: | |
260 | err = crush_decode_uniform_bucket(p, end, | |
261 | (struct crush_bucket_uniform *)b); | |
262 | if (err < 0) | |
263 | goto bad; | |
264 | break; | |
265 | case CRUSH_BUCKET_LIST: | |
266 | err = crush_decode_list_bucket(p, end, | |
267 | (struct crush_bucket_list *)b); | |
268 | if (err < 0) | |
269 | goto bad; | |
270 | break; | |
271 | case CRUSH_BUCKET_TREE: | |
272 | err = crush_decode_tree_bucket(p, end, | |
273 | (struct crush_bucket_tree *)b); | |
274 | if (err < 0) | |
275 | goto bad; | |
276 | break; | |
277 | case CRUSH_BUCKET_STRAW: | |
278 | err = crush_decode_straw_bucket(p, end, | |
279 | (struct crush_bucket_straw *)b); | |
280 | if (err < 0) | |
281 | goto bad; | |
282 | break; | |
958a2765 ID |
283 | case CRUSH_BUCKET_STRAW2: |
284 | err = crush_decode_straw2_bucket(p, end, | |
285 | (struct crush_bucket_straw2 *)b); | |
286 | if (err < 0) | |
287 | goto bad; | |
288 | break; | |
f24e9980 SW |
289 | } |
290 | } | |
291 | ||
292 | /* rules */ | |
293 | dout("rule vec is %p\n", c->rules); | |
294 | for (i = 0; i < c->max_rules; i++) { | |
295 | u32 yes; | |
296 | struct crush_rule *r; | |
297 | ||
298 | ceph_decode_32_safe(p, end, yes, bad); | |
299 | if (!yes) { | |
300 | dout("crush_decode NO rule %d off %x %p to %p\n", | |
301 | i, (int)(*p-start), *p, end); | |
302 | c->rules[i] = NULL; | |
303 | continue; | |
304 | } | |
305 | ||
306 | dout("crush_decode rule %d off %x %p to %p\n", | |
307 | i, (int)(*p-start), *p, end); | |
308 | ||
309 | /* len */ | |
310 | ceph_decode_32_safe(p, end, yes, bad); | |
311 | #if BITS_PER_LONG == 32 | |
30dc6381 | 312 | err = -EINVAL; |
64486697 XW |
313 | if (yes > (ULONG_MAX - sizeof(*r)) |
314 | / sizeof(struct crush_rule_step)) | |
f24e9980 SW |
315 | goto bad; |
316 | #endif | |
317 | r = c->rules[i] = kmalloc(sizeof(*r) + | |
318 | yes*sizeof(struct crush_rule_step), | |
319 | GFP_NOFS); | |
320 | if (r == NULL) | |
321 | goto badmem; | |
322 | dout(" rule %d is at %p\n", i, r); | |
323 | r->len = yes; | |
324 | ceph_decode_copy_safe(p, end, &r->mask, 4, bad); /* 4 u8's */ | |
325 | ceph_decode_need(p, end, r->len*3*sizeof(u32), bad); | |
326 | for (j = 0; j < r->len; j++) { | |
c89136ea SW |
327 | r->steps[j].op = ceph_decode_32(p); |
328 | r->steps[j].arg1 = ceph_decode_32(p); | |
329 | r->steps[j].arg2 = ceph_decode_32(p); | |
f24e9980 SW |
330 | } |
331 | } | |
332 | ||
333 | /* ignore trailing name maps. */ | |
546f04ef SW |
334 | for (num_name_maps = 0; num_name_maps < 3; num_name_maps++) { |
335 | err = skip_name_map(p, end); | |
336 | if (err < 0) | |
337 | goto done; | |
338 | } | |
339 | ||
340 | /* tunables */ | |
341 | ceph_decode_need(p, end, 3*sizeof(u32), done); | |
342 | c->choose_local_tries = ceph_decode_32(p); | |
343 | c->choose_local_fallback_tries = ceph_decode_32(p); | |
344 | c->choose_total_tries = ceph_decode_32(p); | |
b9b519b7 | 345 | dout("crush decode tunable choose_local_tries = %d\n", |
546f04ef | 346 | c->choose_local_tries); |
b9b519b7 | 347 | dout("crush decode tunable choose_local_fallback_tries = %d\n", |
546f04ef | 348 | c->choose_local_fallback_tries); |
b9b519b7 | 349 | dout("crush decode tunable choose_total_tries = %d\n", |
546f04ef | 350 | c->choose_total_tries); |
f24e9980 | 351 | |
1604f488 JS |
352 | ceph_decode_need(p, end, sizeof(u32), done); |
353 | c->chooseleaf_descend_once = ceph_decode_32(p); | |
b9b519b7 | 354 | dout("crush decode tunable chooseleaf_descend_once = %d\n", |
1604f488 JS |
355 | c->chooseleaf_descend_once); |
356 | ||
f140662f ID |
357 | ceph_decode_need(p, end, sizeof(u8), done); |
358 | c->chooseleaf_vary_r = ceph_decode_8(p); | |
b9b519b7 | 359 | dout("crush decode tunable chooseleaf_vary_r = %d\n", |
f140662f ID |
360 | c->chooseleaf_vary_r); |
361 | ||
b9b519b7 ID |
362 | /* skip straw_calc_version, allowed_bucket_algs */ |
363 | ceph_decode_need(p, end, sizeof(u8) + sizeof(u32), done); | |
364 | *p += sizeof(u8) + sizeof(u32); | |
365 | ||
366 | ceph_decode_need(p, end, sizeof(u8), done); | |
367 | c->chooseleaf_stable = ceph_decode_8(p); | |
368 | dout("crush decode tunable chooseleaf_stable = %d\n", | |
369 | c->chooseleaf_stable); | |
370 | ||
546f04ef | 371 | done: |
f24e9980 SW |
372 | dout("crush_decode success\n"); |
373 | return c; | |
374 | ||
375 | badmem: | |
376 | err = -ENOMEM; | |
377 | bad: | |
378 | dout("crush_decode fail %d\n", err); | |
379 | crush_destroy(c); | |
380 | return ERR_PTR(err); | |
381 | } | |
382 | ||
f984cb76 | 383 | int ceph_pg_compare(const struct ceph_pg *lhs, const struct ceph_pg *rhs) |
51042122 | 384 | { |
f984cb76 | 385 | if (lhs->pool < rhs->pool) |
5b191d99 | 386 | return -1; |
f984cb76 | 387 | if (lhs->pool > rhs->pool) |
5b191d99 | 388 | return 1; |
f984cb76 | 389 | if (lhs->seed < rhs->seed) |
51042122 | 390 | return -1; |
f984cb76 | 391 | if (lhs->seed > rhs->seed) |
51042122 | 392 | return 1; |
f984cb76 | 393 | |
51042122 SW |
394 | return 0; |
395 | } | |
396 | ||
f984cb76 ID |
397 | /* |
398 | * rbtree of pg_mapping for handling pg_temp (explicit mapping of pgid | |
399 | * to a set of osds) and primary_temp (explicit primary setting) | |
400 | */ | |
991abb6e SW |
401 | static int __insert_pg_mapping(struct ceph_pg_mapping *new, |
402 | struct rb_root *root) | |
f24e9980 SW |
403 | { |
404 | struct rb_node **p = &root->rb_node; | |
405 | struct rb_node *parent = NULL; | |
406 | struct ceph_pg_mapping *pg = NULL; | |
51042122 | 407 | int c; |
f24e9980 | 408 | |
8adc8b3d | 409 | dout("__insert_pg_mapping %llx %p\n", *(u64 *)&new->pgid, new); |
f24e9980 SW |
410 | while (*p) { |
411 | parent = *p; | |
412 | pg = rb_entry(parent, struct ceph_pg_mapping, node); | |
f984cb76 | 413 | c = ceph_pg_compare(&new->pgid, &pg->pgid); |
51042122 | 414 | if (c < 0) |
f24e9980 | 415 | p = &(*p)->rb_left; |
51042122 | 416 | else if (c > 0) |
f24e9980 SW |
417 | p = &(*p)->rb_right; |
418 | else | |
991abb6e | 419 | return -EEXIST; |
f24e9980 SW |
420 | } |
421 | ||
422 | rb_link_node(&new->node, parent, p); | |
423 | rb_insert_color(&new->node, root); | |
991abb6e | 424 | return 0; |
f24e9980 SW |
425 | } |
426 | ||
9794b146 | 427 | static struct ceph_pg_mapping *__lookup_pg_mapping(struct rb_root *root, |
5b191d99 | 428 | struct ceph_pg pgid) |
9794b146 SW |
429 | { |
430 | struct rb_node *n = root->rb_node; | |
431 | struct ceph_pg_mapping *pg; | |
432 | int c; | |
433 | ||
434 | while (n) { | |
435 | pg = rb_entry(n, struct ceph_pg_mapping, node); | |
f984cb76 | 436 | c = ceph_pg_compare(&pgid, &pg->pgid); |
8adc8b3d | 437 | if (c < 0) { |
9794b146 | 438 | n = n->rb_left; |
8adc8b3d | 439 | } else if (c > 0) { |
9794b146 | 440 | n = n->rb_right; |
8adc8b3d | 441 | } else { |
5b191d99 SW |
442 | dout("__lookup_pg_mapping %lld.%x got %p\n", |
443 | pgid.pool, pgid.seed, pg); | |
9794b146 | 444 | return pg; |
8adc8b3d | 445 | } |
9794b146 SW |
446 | } |
447 | return NULL; | |
448 | } | |
449 | ||
5b191d99 | 450 | static int __remove_pg_mapping(struct rb_root *root, struct ceph_pg pgid) |
8adc8b3d SW |
451 | { |
452 | struct ceph_pg_mapping *pg = __lookup_pg_mapping(root, pgid); | |
453 | ||
454 | if (pg) { | |
5b191d99 SW |
455 | dout("__remove_pg_mapping %lld.%x %p\n", pgid.pool, pgid.seed, |
456 | pg); | |
8adc8b3d SW |
457 | rb_erase(&pg->node, root); |
458 | kfree(pg); | |
459 | return 0; | |
460 | } | |
5b191d99 | 461 | dout("__remove_pg_mapping %lld.%x dne\n", pgid.pool, pgid.seed); |
8adc8b3d SW |
462 | return -ENOENT; |
463 | } | |
464 | ||
4fc51be8 SW |
465 | /* |
466 | * rbtree of pg pool info | |
467 | */ | |
468 | static int __insert_pg_pool(struct rb_root *root, struct ceph_pg_pool_info *new) | |
469 | { | |
470 | struct rb_node **p = &root->rb_node; | |
471 | struct rb_node *parent = NULL; | |
472 | struct ceph_pg_pool_info *pi = NULL; | |
473 | ||
474 | while (*p) { | |
475 | parent = *p; | |
476 | pi = rb_entry(parent, struct ceph_pg_pool_info, node); | |
477 | if (new->id < pi->id) | |
478 | p = &(*p)->rb_left; | |
479 | else if (new->id > pi->id) | |
480 | p = &(*p)->rb_right; | |
481 | else | |
482 | return -EEXIST; | |
483 | } | |
484 | ||
485 | rb_link_node(&new->node, parent, p); | |
486 | rb_insert_color(&new->node, root); | |
487 | return 0; | |
488 | } | |
489 | ||
4f6a7e5e | 490 | static struct ceph_pg_pool_info *__lookup_pg_pool(struct rb_root *root, u64 id) |
4fc51be8 SW |
491 | { |
492 | struct ceph_pg_pool_info *pi; | |
493 | struct rb_node *n = root->rb_node; | |
494 | ||
495 | while (n) { | |
496 | pi = rb_entry(n, struct ceph_pg_pool_info, node); | |
497 | if (id < pi->id) | |
498 | n = n->rb_left; | |
499 | else if (id > pi->id) | |
500 | n = n->rb_right; | |
501 | else | |
502 | return pi; | |
503 | } | |
504 | return NULL; | |
505 | } | |
506 | ||
ce7f6a27 ID |
507 | struct ceph_pg_pool_info *ceph_pg_pool_by_id(struct ceph_osdmap *map, u64 id) |
508 | { | |
509 | return __lookup_pg_pool(&map->pg_pools, id); | |
510 | } | |
511 | ||
72afc71f AE |
512 | const char *ceph_pg_pool_name_by_id(struct ceph_osdmap *map, u64 id) |
513 | { | |
514 | struct ceph_pg_pool_info *pi; | |
515 | ||
516 | if (id == CEPH_NOPOOL) | |
517 | return NULL; | |
518 | ||
519 | if (WARN_ON_ONCE(id > (u64) INT_MAX)) | |
520 | return NULL; | |
521 | ||
522 | pi = __lookup_pg_pool(&map->pg_pools, (int) id); | |
523 | ||
524 | return pi ? pi->name : NULL; | |
525 | } | |
526 | EXPORT_SYMBOL(ceph_pg_pool_name_by_id); | |
527 | ||
7669a2c9 YS |
528 | int ceph_pg_poolid_by_name(struct ceph_osdmap *map, const char *name) |
529 | { | |
530 | struct rb_node *rbp; | |
531 | ||
532 | for (rbp = rb_first(&map->pg_pools); rbp; rbp = rb_next(rbp)) { | |
533 | struct ceph_pg_pool_info *pi = | |
534 | rb_entry(rbp, struct ceph_pg_pool_info, node); | |
535 | if (pi->name && strcmp(pi->name, name) == 0) | |
536 | return pi->id; | |
537 | } | |
538 | return -ENOENT; | |
539 | } | |
3d14c5d2 | 540 | EXPORT_SYMBOL(ceph_pg_poolid_by_name); |
7669a2c9 | 541 | |
2844a76a SW |
542 | static void __remove_pg_pool(struct rb_root *root, struct ceph_pg_pool_info *pi) |
543 | { | |
544 | rb_erase(&pi->node, root); | |
545 | kfree(pi->name); | |
546 | kfree(pi); | |
547 | } | |
548 | ||
0f70c7ee | 549 | static int decode_pool(void **p, void *end, struct ceph_pg_pool_info *pi) |
efd7576b | 550 | { |
4f6a7e5e SW |
551 | u8 ev, cv; |
552 | unsigned len, num; | |
553 | void *pool_end; | |
554 | ||
555 | ceph_decode_need(p, end, 2 + 4, bad); | |
556 | ev = ceph_decode_8(p); /* encoding version */ | |
557 | cv = ceph_decode_8(p); /* compat version */ | |
558 | if (ev < 5) { | |
b9a67899 | 559 | pr_warn("got v %d < 5 cv %d of ceph_pg_pool\n", ev, cv); |
4f6a7e5e SW |
560 | return -EINVAL; |
561 | } | |
17a13e40 | 562 | if (cv > 9) { |
b9a67899 | 563 | pr_warn("got v %d cv %d > 9 of ceph_pg_pool\n", ev, cv); |
4f6a7e5e SW |
564 | return -EINVAL; |
565 | } | |
566 | len = ceph_decode_32(p); | |
567 | ceph_decode_need(p, end, len, bad); | |
568 | pool_end = *p + len; | |
73a7e693 | 569 | |
4f6a7e5e SW |
570 | pi->type = ceph_decode_8(p); |
571 | pi->size = ceph_decode_8(p); | |
572 | pi->crush_ruleset = ceph_decode_8(p); | |
573 | pi->object_hash = ceph_decode_8(p); | |
73a7e693 | 574 | |
4f6a7e5e SW |
575 | pi->pg_num = ceph_decode_32(p); |
576 | pi->pgp_num = ceph_decode_32(p); | |
577 | ||
578 | *p += 4 + 4; /* skip lpg* */ | |
579 | *p += 4; /* skip last_change */ | |
580 | *p += 8 + 4; /* skip snap_seq, snap_epoch */ | |
581 | ||
582 | /* skip snaps */ | |
583 | num = ceph_decode_32(p); | |
584 | while (num--) { | |
585 | *p += 8; /* snapid key */ | |
586 | *p += 1 + 1; /* versions */ | |
587 | len = ceph_decode_32(p); | |
588 | *p += len; | |
73a7e693 SW |
589 | } |
590 | ||
17a13e40 | 591 | /* skip removed_snaps */ |
4f6a7e5e SW |
592 | num = ceph_decode_32(p); |
593 | *p += num * (8 + 8); | |
594 | ||
595 | *p += 8; /* skip auid */ | |
596 | pi->flags = ceph_decode_64(p); | |
17a13e40 ID |
597 | *p += 4; /* skip crash_replay_interval */ |
598 | ||
599 | if (ev >= 7) | |
600 | *p += 1; /* skip min_size */ | |
601 | ||
602 | if (ev >= 8) | |
603 | *p += 8 + 8; /* skip quota_max_* */ | |
604 | ||
605 | if (ev >= 9) { | |
606 | /* skip tiers */ | |
607 | num = ceph_decode_32(p); | |
608 | *p += num * 8; | |
609 | ||
610 | *p += 8; /* skip tier_of */ | |
611 | *p += 1; /* skip cache_mode */ | |
612 | ||
613 | pi->read_tier = ceph_decode_64(p); | |
614 | pi->write_tier = ceph_decode_64(p); | |
615 | } else { | |
616 | pi->read_tier = -1; | |
617 | pi->write_tier = -1; | |
618 | } | |
4f6a7e5e SW |
619 | |
620 | /* ignore the rest */ | |
621 | ||
622 | *p = pool_end; | |
623 | calc_pg_masks(pi); | |
73a7e693 SW |
624 | return 0; |
625 | ||
626 | bad: | |
627 | return -EINVAL; | |
efd7576b SW |
628 | } |
629 | ||
0f70c7ee | 630 | static int decode_pool_names(void **p, void *end, struct ceph_osdmap *map) |
2844a76a SW |
631 | { |
632 | struct ceph_pg_pool_info *pi; | |
4f6a7e5e SW |
633 | u32 num, len; |
634 | u64 pool; | |
2844a76a SW |
635 | |
636 | ceph_decode_32_safe(p, end, num, bad); | |
637 | dout(" %d pool names\n", num); | |
638 | while (num--) { | |
4f6a7e5e | 639 | ceph_decode_64_safe(p, end, pool, bad); |
2844a76a | 640 | ceph_decode_32_safe(p, end, len, bad); |
4f6a7e5e | 641 | dout(" pool %llu len %d\n", pool, len); |
ad3b904c | 642 | ceph_decode_need(p, end, len, bad); |
2844a76a SW |
643 | pi = __lookup_pg_pool(&map->pg_pools, pool); |
644 | if (pi) { | |
ad3b904c XW |
645 | char *name = kstrndup(*p, len, GFP_NOFS); |
646 | ||
647 | if (!name) | |
648 | return -ENOMEM; | |
2844a76a | 649 | kfree(pi->name); |
ad3b904c XW |
650 | pi->name = name; |
651 | dout(" name is %s\n", pi->name); | |
2844a76a SW |
652 | } |
653 | *p += len; | |
654 | } | |
655 | return 0; | |
656 | ||
657 | bad: | |
658 | return -EINVAL; | |
659 | } | |
660 | ||
661 | /* | |
662 | * osd map | |
663 | */ | |
664 | void ceph_osdmap_destroy(struct ceph_osdmap *map) | |
665 | { | |
666 | dout("osdmap_destroy %p\n", map); | |
667 | if (map->crush) | |
668 | crush_destroy(map->crush); | |
669 | while (!RB_EMPTY_ROOT(&map->pg_temp)) { | |
670 | struct ceph_pg_mapping *pg = | |
671 | rb_entry(rb_first(&map->pg_temp), | |
672 | struct ceph_pg_mapping, node); | |
673 | rb_erase(&pg->node, &map->pg_temp); | |
674 | kfree(pg); | |
675 | } | |
9686f94c ID |
676 | while (!RB_EMPTY_ROOT(&map->primary_temp)) { |
677 | struct ceph_pg_mapping *pg = | |
678 | rb_entry(rb_first(&map->primary_temp), | |
679 | struct ceph_pg_mapping, node); | |
680 | rb_erase(&pg->node, &map->primary_temp); | |
681 | kfree(pg); | |
682 | } | |
2844a76a SW |
683 | while (!RB_EMPTY_ROOT(&map->pg_pools)) { |
684 | struct ceph_pg_pool_info *pi = | |
685 | rb_entry(rb_first(&map->pg_pools), | |
686 | struct ceph_pg_pool_info, node); | |
687 | __remove_pg_pool(&map->pg_pools, pi); | |
688 | } | |
689 | kfree(map->osd_state); | |
690 | kfree(map->osd_weight); | |
691 | kfree(map->osd_addr); | |
2cfa34f2 | 692 | kfree(map->osd_primary_affinity); |
2844a76a SW |
693 | kfree(map); |
694 | } | |
695 | ||
696 | /* | |
4d60351f ID |
697 | * Adjust max_osd value, (re)allocate arrays. |
698 | * | |
699 | * The new elements are properly initialized. | |
2844a76a SW |
700 | */ |
701 | static int osdmap_set_max_osd(struct ceph_osdmap *map, int max) | |
702 | { | |
703 | u8 *state; | |
2844a76a | 704 | u32 *weight; |
4d60351f ID |
705 | struct ceph_entity_addr *addr; |
706 | int i; | |
2844a76a | 707 | |
4d60351f | 708 | state = krealloc(map->osd_state, max*sizeof(*state), GFP_NOFS); |
589506f1 LR |
709 | if (!state) |
710 | return -ENOMEM; | |
711 | map->osd_state = state; | |
712 | ||
4d60351f | 713 | weight = krealloc(map->osd_weight, max*sizeof(*weight), GFP_NOFS); |
589506f1 LR |
714 | if (!weight) |
715 | return -ENOMEM; | |
716 | map->osd_weight = weight; | |
4d60351f | 717 | |
589506f1 LR |
718 | addr = krealloc(map->osd_addr, max*sizeof(*addr), GFP_NOFS); |
719 | if (!addr) | |
2844a76a | 720 | return -ENOMEM; |
589506f1 | 721 | map->osd_addr = addr; |
2844a76a | 722 | |
4d60351f | 723 | for (i = map->max_osd; i < max; i++) { |
589506f1 LR |
724 | map->osd_state[i] = 0; |
725 | map->osd_weight[i] = CEPH_OSD_OUT; | |
726 | memset(map->osd_addr + i, 0, sizeof(*map->osd_addr)); | |
2844a76a SW |
727 | } |
728 | ||
2cfa34f2 ID |
729 | if (map->osd_primary_affinity) { |
730 | u32 *affinity; | |
731 | ||
732 | affinity = krealloc(map->osd_primary_affinity, | |
733 | max*sizeof(*affinity), GFP_NOFS); | |
734 | if (!affinity) | |
735 | return -ENOMEM; | |
589506f1 | 736 | map->osd_primary_affinity = affinity; |
2cfa34f2 ID |
737 | |
738 | for (i = map->max_osd; i < max; i++) | |
589506f1 LR |
739 | map->osd_primary_affinity[i] = |
740 | CEPH_OSD_DEFAULT_PRIMARY_AFFINITY; | |
2cfa34f2 ID |
741 | } |
742 | ||
2844a76a | 743 | map->max_osd = max; |
4d60351f | 744 | |
2844a76a SW |
745 | return 0; |
746 | } | |
747 | ||
ec7af972 ID |
748 | #define OSDMAP_WRAPPER_COMPAT_VER 7 |
749 | #define OSDMAP_CLIENT_DATA_COMPAT_VER 1 | |
750 | ||
751 | /* | |
752 | * Return 0 or error. On success, *v is set to 0 for old (v6) osdmaps, | |
753 | * to struct_v of the client_data section for new (v7 and above) | |
754 | * osdmaps. | |
755 | */ | |
756 | static int get_osdmap_client_data_v(void **p, void *end, | |
757 | const char *prefix, u8 *v) | |
758 | { | |
759 | u8 struct_v; | |
760 | ||
761 | ceph_decode_8_safe(p, end, struct_v, e_inval); | |
762 | if (struct_v >= 7) { | |
763 | u8 struct_compat; | |
764 | ||
765 | ceph_decode_8_safe(p, end, struct_compat, e_inval); | |
766 | if (struct_compat > OSDMAP_WRAPPER_COMPAT_VER) { | |
b9a67899 JP |
767 | pr_warn("got v %d cv %d > %d of %s ceph_osdmap\n", |
768 | struct_v, struct_compat, | |
769 | OSDMAP_WRAPPER_COMPAT_VER, prefix); | |
ec7af972 ID |
770 | return -EINVAL; |
771 | } | |
772 | *p += 4; /* ignore wrapper struct_len */ | |
773 | ||
774 | ceph_decode_8_safe(p, end, struct_v, e_inval); | |
775 | ceph_decode_8_safe(p, end, struct_compat, e_inval); | |
776 | if (struct_compat > OSDMAP_CLIENT_DATA_COMPAT_VER) { | |
b9a67899 JP |
777 | pr_warn("got v %d cv %d > %d of %s ceph_osdmap client data\n", |
778 | struct_v, struct_compat, | |
779 | OSDMAP_CLIENT_DATA_COMPAT_VER, prefix); | |
ec7af972 ID |
780 | return -EINVAL; |
781 | } | |
782 | *p += 4; /* ignore client data struct_len */ | |
783 | } else { | |
784 | u16 version; | |
785 | ||
786 | *p -= 1; | |
787 | ceph_decode_16_safe(p, end, version, e_inval); | |
788 | if (version < 6) { | |
b9a67899 JP |
789 | pr_warn("got v %d < 6 of %s ceph_osdmap\n", |
790 | version, prefix); | |
ec7af972 ID |
791 | return -EINVAL; |
792 | } | |
793 | ||
794 | /* old osdmap enconding */ | |
795 | struct_v = 0; | |
796 | } | |
797 | ||
798 | *v = struct_v; | |
799 | return 0; | |
800 | ||
801 | e_inval: | |
802 | return -EINVAL; | |
803 | } | |
804 | ||
433fbdd3 ID |
805 | static int __decode_pools(void **p, void *end, struct ceph_osdmap *map, |
806 | bool incremental) | |
807 | { | |
808 | u32 n; | |
809 | ||
810 | ceph_decode_32_safe(p, end, n, e_inval); | |
811 | while (n--) { | |
812 | struct ceph_pg_pool_info *pi; | |
813 | u64 pool; | |
814 | int ret; | |
815 | ||
816 | ceph_decode_64_safe(p, end, pool, e_inval); | |
817 | ||
818 | pi = __lookup_pg_pool(&map->pg_pools, pool); | |
819 | if (!incremental || !pi) { | |
820 | pi = kzalloc(sizeof(*pi), GFP_NOFS); | |
821 | if (!pi) | |
822 | return -ENOMEM; | |
823 | ||
824 | pi->id = pool; | |
825 | ||
826 | ret = __insert_pg_pool(&map->pg_pools, pi); | |
827 | if (ret) { | |
828 | kfree(pi); | |
829 | return ret; | |
830 | } | |
831 | } | |
832 | ||
833 | ret = decode_pool(p, end, pi); | |
834 | if (ret) | |
835 | return ret; | |
836 | } | |
837 | ||
838 | return 0; | |
839 | ||
840 | e_inval: | |
841 | return -EINVAL; | |
842 | } | |
843 | ||
844 | static int decode_pools(void **p, void *end, struct ceph_osdmap *map) | |
845 | { | |
846 | return __decode_pools(p, end, map, false); | |
847 | } | |
848 | ||
849 | static int decode_new_pools(void **p, void *end, struct ceph_osdmap *map) | |
850 | { | |
851 | return __decode_pools(p, end, map, true); | |
852 | } | |
853 | ||
10db634e ID |
854 | static int __decode_pg_temp(void **p, void *end, struct ceph_osdmap *map, |
855 | bool incremental) | |
856 | { | |
857 | u32 n; | |
858 | ||
859 | ceph_decode_32_safe(p, end, n, e_inval); | |
860 | while (n--) { | |
861 | struct ceph_pg pgid; | |
862 | u32 len, i; | |
863 | int ret; | |
864 | ||
865 | ret = ceph_decode_pgid(p, end, &pgid); | |
866 | if (ret) | |
867 | return ret; | |
868 | ||
869 | ceph_decode_32_safe(p, end, len, e_inval); | |
870 | ||
871 | ret = __remove_pg_mapping(&map->pg_temp, pgid); | |
872 | BUG_ON(!incremental && ret != -ENOENT); | |
873 | ||
874 | if (!incremental || len > 0) { | |
875 | struct ceph_pg_mapping *pg; | |
876 | ||
877 | ceph_decode_need(p, end, len*sizeof(u32), e_inval); | |
878 | ||
879 | if (len > (UINT_MAX - sizeof(*pg)) / sizeof(u32)) | |
880 | return -EINVAL; | |
881 | ||
882 | pg = kzalloc(sizeof(*pg) + len*sizeof(u32), GFP_NOFS); | |
883 | if (!pg) | |
884 | return -ENOMEM; | |
885 | ||
886 | pg->pgid = pgid; | |
35a935d7 | 887 | pg->pg_temp.len = len; |
10db634e | 888 | for (i = 0; i < len; i++) |
35a935d7 | 889 | pg->pg_temp.osds[i] = ceph_decode_32(p); |
10db634e ID |
890 | |
891 | ret = __insert_pg_mapping(pg, &map->pg_temp); | |
892 | if (ret) { | |
893 | kfree(pg); | |
894 | return ret; | |
895 | } | |
896 | } | |
897 | } | |
898 | ||
899 | return 0; | |
900 | ||
901 | e_inval: | |
902 | return -EINVAL; | |
903 | } | |
904 | ||
905 | static int decode_pg_temp(void **p, void *end, struct ceph_osdmap *map) | |
906 | { | |
907 | return __decode_pg_temp(p, end, map, false); | |
908 | } | |
909 | ||
910 | static int decode_new_pg_temp(void **p, void *end, struct ceph_osdmap *map) | |
911 | { | |
912 | return __decode_pg_temp(p, end, map, true); | |
913 | } | |
914 | ||
d286de79 ID |
915 | static int __decode_primary_temp(void **p, void *end, struct ceph_osdmap *map, |
916 | bool incremental) | |
917 | { | |
918 | u32 n; | |
919 | ||
920 | ceph_decode_32_safe(p, end, n, e_inval); | |
921 | while (n--) { | |
922 | struct ceph_pg pgid; | |
923 | u32 osd; | |
924 | int ret; | |
925 | ||
926 | ret = ceph_decode_pgid(p, end, &pgid); | |
927 | if (ret) | |
928 | return ret; | |
929 | ||
930 | ceph_decode_32_safe(p, end, osd, e_inval); | |
931 | ||
932 | ret = __remove_pg_mapping(&map->primary_temp, pgid); | |
933 | BUG_ON(!incremental && ret != -ENOENT); | |
934 | ||
935 | if (!incremental || osd != (u32)-1) { | |
936 | struct ceph_pg_mapping *pg; | |
937 | ||
938 | pg = kzalloc(sizeof(*pg), GFP_NOFS); | |
939 | if (!pg) | |
940 | return -ENOMEM; | |
941 | ||
942 | pg->pgid = pgid; | |
943 | pg->primary_temp.osd = osd; | |
944 | ||
945 | ret = __insert_pg_mapping(pg, &map->primary_temp); | |
946 | if (ret) { | |
947 | kfree(pg); | |
948 | return ret; | |
949 | } | |
950 | } | |
951 | } | |
952 | ||
953 | return 0; | |
954 | ||
955 | e_inval: | |
956 | return -EINVAL; | |
957 | } | |
958 | ||
959 | static int decode_primary_temp(void **p, void *end, struct ceph_osdmap *map) | |
960 | { | |
961 | return __decode_primary_temp(p, end, map, false); | |
962 | } | |
963 | ||
964 | static int decode_new_primary_temp(void **p, void *end, | |
965 | struct ceph_osdmap *map) | |
966 | { | |
967 | return __decode_primary_temp(p, end, map, true); | |
968 | } | |
969 | ||
2cfa34f2 ID |
970 | u32 ceph_get_primary_affinity(struct ceph_osdmap *map, int osd) |
971 | { | |
972 | BUG_ON(osd >= map->max_osd); | |
973 | ||
974 | if (!map->osd_primary_affinity) | |
975 | return CEPH_OSD_DEFAULT_PRIMARY_AFFINITY; | |
976 | ||
977 | return map->osd_primary_affinity[osd]; | |
978 | } | |
979 | ||
980 | static int set_primary_affinity(struct ceph_osdmap *map, int osd, u32 aff) | |
981 | { | |
982 | BUG_ON(osd >= map->max_osd); | |
983 | ||
984 | if (!map->osd_primary_affinity) { | |
985 | int i; | |
986 | ||
987 | map->osd_primary_affinity = kmalloc(map->max_osd*sizeof(u32), | |
988 | GFP_NOFS); | |
989 | if (!map->osd_primary_affinity) | |
990 | return -ENOMEM; | |
991 | ||
992 | for (i = 0; i < map->max_osd; i++) | |
993 | map->osd_primary_affinity[i] = | |
994 | CEPH_OSD_DEFAULT_PRIMARY_AFFINITY; | |
995 | } | |
996 | ||
997 | map->osd_primary_affinity[osd] = aff; | |
998 | ||
999 | return 0; | |
1000 | } | |
1001 | ||
63a6993f ID |
1002 | static int decode_primary_affinity(void **p, void *end, |
1003 | struct ceph_osdmap *map) | |
1004 | { | |
1005 | u32 len, i; | |
1006 | ||
1007 | ceph_decode_32_safe(p, end, len, e_inval); | |
1008 | if (len == 0) { | |
1009 | kfree(map->osd_primary_affinity); | |
1010 | map->osd_primary_affinity = NULL; | |
1011 | return 0; | |
1012 | } | |
1013 | if (len != map->max_osd) | |
1014 | goto e_inval; | |
1015 | ||
1016 | ceph_decode_need(p, end, map->max_osd*sizeof(u32), e_inval); | |
1017 | ||
1018 | for (i = 0; i < map->max_osd; i++) { | |
1019 | int ret; | |
1020 | ||
1021 | ret = set_primary_affinity(map, i, ceph_decode_32(p)); | |
1022 | if (ret) | |
1023 | return ret; | |
1024 | } | |
1025 | ||
1026 | return 0; | |
1027 | ||
1028 | e_inval: | |
1029 | return -EINVAL; | |
1030 | } | |
1031 | ||
1032 | static int decode_new_primary_affinity(void **p, void *end, | |
1033 | struct ceph_osdmap *map) | |
1034 | { | |
1035 | u32 n; | |
1036 | ||
1037 | ceph_decode_32_safe(p, end, n, e_inval); | |
1038 | while (n--) { | |
1039 | u32 osd, aff; | |
1040 | int ret; | |
1041 | ||
1042 | ceph_decode_32_safe(p, end, osd, e_inval); | |
1043 | ceph_decode_32_safe(p, end, aff, e_inval); | |
1044 | ||
1045 | ret = set_primary_affinity(map, osd, aff); | |
1046 | if (ret) | |
1047 | return ret; | |
f31da0f3 ID |
1048 | |
1049 | pr_info("osd%d primary-affinity 0x%x\n", osd, aff); | |
63a6993f ID |
1050 | } |
1051 | ||
1052 | return 0; | |
1053 | ||
1054 | e_inval: | |
1055 | return -EINVAL; | |
1056 | } | |
1057 | ||
f24e9980 SW |
1058 | /* |
1059 | * decode a full map. | |
1060 | */ | |
a2505d63 | 1061 | static int osdmap_decode(void **p, void *end, struct ceph_osdmap *map) |
f24e9980 | 1062 | { |
ec7af972 | 1063 | u8 struct_v; |
38a8d560 | 1064 | u32 epoch = 0; |
f24e9980 | 1065 | void *start = *p; |
3977058c ID |
1066 | u32 max; |
1067 | u32 len, i; | |
597b52f6 | 1068 | int err; |
f24e9980 | 1069 | |
a2505d63 | 1070 | dout("%s %p to %p len %d\n", __func__, *p, end, (int)(end - *p)); |
f24e9980 | 1071 | |
ec7af972 ID |
1072 | err = get_osdmap_client_data_v(p, end, "full", &struct_v); |
1073 | if (err) | |
1074 | goto bad; | |
f24e9980 | 1075 | |
53bbaba9 ID |
1076 | /* fsid, epoch, created, modified */ |
1077 | ceph_decode_need(p, end, sizeof(map->fsid) + sizeof(u32) + | |
1078 | sizeof(map->created) + sizeof(map->modified), e_inval); | |
f24e9980 | 1079 | ceph_decode_copy(p, &map->fsid, sizeof(map->fsid)); |
38a8d560 | 1080 | epoch = map->epoch = ceph_decode_32(p); |
f24e9980 SW |
1081 | ceph_decode_copy(p, &map->created, sizeof(map->created)); |
1082 | ceph_decode_copy(p, &map->modified, sizeof(map->modified)); | |
1083 | ||
433fbdd3 ID |
1084 | /* pools */ |
1085 | err = decode_pools(p, end, map); | |
1086 | if (err) | |
1087 | goto bad; | |
2844a76a | 1088 | |
0f70c7ee ID |
1089 | /* pool_name */ |
1090 | err = decode_pool_names(p, end, map); | |
597b52f6 | 1091 | if (err) |
4f6a7e5e | 1092 | goto bad; |
2844a76a | 1093 | |
597b52f6 | 1094 | ceph_decode_32_safe(p, end, map->pool_max, e_inval); |
f24e9980 | 1095 | |
597b52f6 | 1096 | ceph_decode_32_safe(p, end, map->flags, e_inval); |
f24e9980 | 1097 | |
3977058c ID |
1098 | /* max_osd */ |
1099 | ceph_decode_32_safe(p, end, max, e_inval); | |
f24e9980 SW |
1100 | |
1101 | /* (re)alloc osd arrays */ | |
1102 | err = osdmap_set_max_osd(map, max); | |
597b52f6 | 1103 | if (err) |
f24e9980 | 1104 | goto bad; |
f24e9980 | 1105 | |
2d88b2e0 | 1106 | /* osd_state, osd_weight, osd_addrs->client_addr */ |
f24e9980 SW |
1107 | ceph_decode_need(p, end, 3*sizeof(u32) + |
1108 | map->max_osd*(1 + sizeof(*map->osd_weight) + | |
597b52f6 ID |
1109 | sizeof(*map->osd_addr)), e_inval); |
1110 | ||
2d88b2e0 ID |
1111 | if (ceph_decode_32(p) != map->max_osd) |
1112 | goto e_inval; | |
1113 | ||
f24e9980 SW |
1114 | ceph_decode_copy(p, map->osd_state, map->max_osd); |
1115 | ||
2d88b2e0 ID |
1116 | if (ceph_decode_32(p) != map->max_osd) |
1117 | goto e_inval; | |
1118 | ||
f24e9980 | 1119 | for (i = 0; i < map->max_osd; i++) |
c89136ea | 1120 | map->osd_weight[i] = ceph_decode_32(p); |
f24e9980 | 1121 | |
2d88b2e0 ID |
1122 | if (ceph_decode_32(p) != map->max_osd) |
1123 | goto e_inval; | |
1124 | ||
f24e9980 | 1125 | ceph_decode_copy(p, map->osd_addr, map->max_osd*sizeof(*map->osd_addr)); |
63f2d211 SW |
1126 | for (i = 0; i < map->max_osd; i++) |
1127 | ceph_decode_addr(&map->osd_addr[i]); | |
f24e9980 SW |
1128 | |
1129 | /* pg_temp */ | |
10db634e ID |
1130 | err = decode_pg_temp(p, end, map); |
1131 | if (err) | |
1132 | goto bad; | |
f24e9980 | 1133 | |
d286de79 ID |
1134 | /* primary_temp */ |
1135 | if (struct_v >= 1) { | |
1136 | err = decode_primary_temp(p, end, map); | |
1137 | if (err) | |
1138 | goto bad; | |
1139 | } | |
1140 | ||
63a6993f ID |
1141 | /* primary_affinity */ |
1142 | if (struct_v >= 2) { | |
1143 | err = decode_primary_affinity(p, end, map); | |
1144 | if (err) | |
1145 | goto bad; | |
1146 | } else { | |
1147 | /* XXX can this happen? */ | |
1148 | kfree(map->osd_primary_affinity); | |
1149 | map->osd_primary_affinity = NULL; | |
1150 | } | |
1151 | ||
f24e9980 | 1152 | /* crush */ |
597b52f6 | 1153 | ceph_decode_32_safe(p, end, len, e_inval); |
9902e682 | 1154 | map->crush = crush_decode(*p, min(*p + len, end)); |
f24e9980 SW |
1155 | if (IS_ERR(map->crush)) { |
1156 | err = PTR_ERR(map->crush); | |
1157 | map->crush = NULL; | |
1158 | goto bad; | |
1159 | } | |
9902e682 | 1160 | *p += len; |
f24e9980 | 1161 | |
38a8d560 | 1162 | /* ignore the rest */ |
f24e9980 SW |
1163 | *p = end; |
1164 | ||
38a8d560 | 1165 | dout("full osdmap epoch %d max_osd %d\n", map->epoch, map->max_osd); |
a2505d63 | 1166 | return 0; |
f24e9980 | 1167 | |
597b52f6 ID |
1168 | e_inval: |
1169 | err = -EINVAL; | |
f24e9980 | 1170 | bad: |
38a8d560 ID |
1171 | pr_err("corrupt full osdmap (%d) epoch %d off %d (%p of %p-%p)\n", |
1172 | err, epoch, (int)(*p - start), *p, start, end); | |
1173 | print_hex_dump(KERN_DEBUG, "osdmap: ", | |
1174 | DUMP_PREFIX_OFFSET, 16, 1, | |
1175 | start, end - start, true); | |
a2505d63 ID |
1176 | return err; |
1177 | } | |
1178 | ||
1179 | /* | |
1180 | * Allocate and decode a full map. | |
1181 | */ | |
1182 | struct ceph_osdmap *ceph_osdmap_decode(void **p, void *end) | |
1183 | { | |
1184 | struct ceph_osdmap *map; | |
1185 | int ret; | |
1186 | ||
1187 | map = kzalloc(sizeof(*map), GFP_NOFS); | |
1188 | if (!map) | |
1189 | return ERR_PTR(-ENOMEM); | |
1190 | ||
1191 | map->pg_temp = RB_ROOT; | |
9686f94c | 1192 | map->primary_temp = RB_ROOT; |
a2505d63 ID |
1193 | mutex_init(&map->crush_scratch_mutex); |
1194 | ||
1195 | ret = osdmap_decode(p, end, map); | |
1196 | if (ret) { | |
1197 | ceph_osdmap_destroy(map); | |
1198 | return ERR_PTR(ret); | |
1199 | } | |
1200 | ||
1201 | return map; | |
f24e9980 SW |
1202 | } |
1203 | ||
1204 | /* | |
1205 | * decode and apply an incremental map update. | |
1206 | */ | |
1207 | struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end, | |
0c0a8de1 | 1208 | struct ceph_osdmap *map) |
f24e9980 | 1209 | { |
f24e9980 SW |
1210 | struct crush_map *newcrush = NULL; |
1211 | struct ceph_fsid fsid; | |
1212 | u32 epoch = 0; | |
1213 | struct ceph_timespec modified; | |
4f6a7e5e SW |
1214 | s32 len; |
1215 | u64 pool; | |
1216 | __s64 new_pool_max; | |
1217 | __s32 new_flags, max; | |
f24e9980 | 1218 | void *start = *p; |
86f1742b | 1219 | int err; |
ec7af972 | 1220 | u8 struct_v; |
f24e9980 | 1221 | |
38a8d560 ID |
1222 | dout("%s %p to %p len %d\n", __func__, *p, end, (int)(end - *p)); |
1223 | ||
ec7af972 ID |
1224 | err = get_osdmap_client_data_v(p, end, "inc", &struct_v); |
1225 | if (err) | |
1226 | goto bad; | |
f24e9980 | 1227 | |
53bbaba9 ID |
1228 | /* fsid, epoch, modified, new_pool_max, new_flags */ |
1229 | ceph_decode_need(p, end, sizeof(fsid) + sizeof(u32) + sizeof(modified) + | |
1230 | sizeof(u64) + sizeof(u32), e_inval); | |
f24e9980 | 1231 | ceph_decode_copy(p, &fsid, sizeof(fsid)); |
c89136ea | 1232 | epoch = ceph_decode_32(p); |
f24e9980 SW |
1233 | BUG_ON(epoch != map->epoch+1); |
1234 | ceph_decode_copy(p, &modified, sizeof(modified)); | |
4f6a7e5e | 1235 | new_pool_max = ceph_decode_64(p); |
c89136ea | 1236 | new_flags = ceph_decode_32(p); |
f24e9980 SW |
1237 | |
1238 | /* full map? */ | |
86f1742b | 1239 | ceph_decode_32_safe(p, end, len, e_inval); |
f24e9980 SW |
1240 | if (len > 0) { |
1241 | dout("apply_incremental full map len %d, %p to %p\n", | |
1242 | len, *p, end); | |
a2505d63 | 1243 | return ceph_osdmap_decode(p, min(*p+len, end)); |
f24e9980 SW |
1244 | } |
1245 | ||
1246 | /* new crush? */ | |
86f1742b | 1247 | ceph_decode_32_safe(p, end, len, e_inval); |
f24e9980 | 1248 | if (len > 0) { |
f24e9980 | 1249 | newcrush = crush_decode(*p, min(*p+len, end)); |
86f1742b ID |
1250 | if (IS_ERR(newcrush)) { |
1251 | err = PTR_ERR(newcrush); | |
1252 | newcrush = NULL; | |
1253 | goto bad; | |
1254 | } | |
cebc5be6 | 1255 | *p += len; |
f24e9980 SW |
1256 | } |
1257 | ||
1258 | /* new flags? */ | |
1259 | if (new_flags >= 0) | |
1260 | map->flags = new_flags; | |
4fc51be8 SW |
1261 | if (new_pool_max >= 0) |
1262 | map->pool_max = new_pool_max; | |
f24e9980 | 1263 | |
f24e9980 | 1264 | /* new max? */ |
53bbaba9 | 1265 | ceph_decode_32_safe(p, end, max, e_inval); |
f24e9980 SW |
1266 | if (max >= 0) { |
1267 | err = osdmap_set_max_osd(map, max); | |
86f1742b | 1268 | if (err) |
f24e9980 SW |
1269 | goto bad; |
1270 | } | |
1271 | ||
1272 | map->epoch++; | |
31456665 | 1273 | map->modified = modified; |
f24e9980 SW |
1274 | if (newcrush) { |
1275 | if (map->crush) | |
1276 | crush_destroy(map->crush); | |
1277 | map->crush = newcrush; | |
1278 | newcrush = NULL; | |
1279 | } | |
1280 | ||
433fbdd3 ID |
1281 | /* new_pools */ |
1282 | err = decode_new_pools(p, end, map); | |
1283 | if (err) | |
1284 | goto bad; | |
9464d008 | 1285 | |
0f70c7ee ID |
1286 | /* new_pool_names */ |
1287 | err = decode_pool_names(p, end, map); | |
9464d008 ID |
1288 | if (err) |
1289 | goto bad; | |
f24e9980 | 1290 | |
4fc51be8 | 1291 | /* old_pool */ |
86f1742b | 1292 | ceph_decode_32_safe(p, end, len, e_inval); |
4fc51be8 SW |
1293 | while (len--) { |
1294 | struct ceph_pg_pool_info *pi; | |
1295 | ||
86f1742b | 1296 | ceph_decode_64_safe(p, end, pool, e_inval); |
4fc51be8 | 1297 | pi = __lookup_pg_pool(&map->pg_pools, pool); |
2844a76a SW |
1298 | if (pi) |
1299 | __remove_pg_pool(&map->pg_pools, pi); | |
4fc51be8 | 1300 | } |
f24e9980 SW |
1301 | |
1302 | /* new_up */ | |
86f1742b | 1303 | ceph_decode_32_safe(p, end, len, e_inval); |
f24e9980 SW |
1304 | while (len--) { |
1305 | u32 osd; | |
1306 | struct ceph_entity_addr addr; | |
86f1742b ID |
1307 | ceph_decode_32_safe(p, end, osd, e_inval); |
1308 | ceph_decode_copy_safe(p, end, &addr, sizeof(addr), e_inval); | |
63f2d211 | 1309 | ceph_decode_addr(&addr); |
f24e9980 SW |
1310 | pr_info("osd%d up\n", osd); |
1311 | BUG_ON(osd >= map->max_osd); | |
6dd74e44 | 1312 | map->osd_state[osd] |= CEPH_OSD_UP | CEPH_OSD_EXISTS; |
f24e9980 SW |
1313 | map->osd_addr[osd] = addr; |
1314 | } | |
1315 | ||
7662d8ff | 1316 | /* new_state */ |
86f1742b | 1317 | ceph_decode_32_safe(p, end, len, e_inval); |
f24e9980 SW |
1318 | while (len--) { |
1319 | u32 osd; | |
7662d8ff | 1320 | u8 xorstate; |
86f1742b | 1321 | ceph_decode_32_safe(p, end, osd, e_inval); |
7662d8ff | 1322 | xorstate = **(u8 **)p; |
f24e9980 | 1323 | (*p)++; /* clean flag */ |
7662d8ff SW |
1324 | if (xorstate == 0) |
1325 | xorstate = CEPH_OSD_UP; | |
1326 | if (xorstate & CEPH_OSD_UP) | |
1327 | pr_info("osd%d down\n", osd); | |
f24e9980 | 1328 | if (osd < map->max_osd) |
7662d8ff | 1329 | map->osd_state[osd] ^= xorstate; |
f24e9980 SW |
1330 | } |
1331 | ||
1332 | /* new_weight */ | |
86f1742b | 1333 | ceph_decode_32_safe(p, end, len, e_inval); |
f24e9980 SW |
1334 | while (len--) { |
1335 | u32 osd, off; | |
86f1742b | 1336 | ceph_decode_need(p, end, sizeof(u32)*2, e_inval); |
c89136ea SW |
1337 | osd = ceph_decode_32(p); |
1338 | off = ceph_decode_32(p); | |
f24e9980 SW |
1339 | pr_info("osd%d weight 0x%x %s\n", osd, off, |
1340 | off == CEPH_OSD_IN ? "(in)" : | |
1341 | (off == CEPH_OSD_OUT ? "(out)" : "")); | |
1342 | if (osd < map->max_osd) | |
1343 | map->osd_weight[osd] = off; | |
1344 | } | |
1345 | ||
1346 | /* new_pg_temp */ | |
10db634e ID |
1347 | err = decode_new_pg_temp(p, end, map); |
1348 | if (err) | |
1349 | goto bad; | |
f24e9980 | 1350 | |
d286de79 ID |
1351 | /* new_primary_temp */ |
1352 | if (struct_v >= 1) { | |
1353 | err = decode_new_primary_temp(p, end, map); | |
1354 | if (err) | |
1355 | goto bad; | |
1356 | } | |
1357 | ||
63a6993f ID |
1358 | /* new_primary_affinity */ |
1359 | if (struct_v >= 2) { | |
1360 | err = decode_new_primary_affinity(p, end, map); | |
1361 | if (err) | |
1362 | goto bad; | |
1363 | } | |
1364 | ||
f24e9980 SW |
1365 | /* ignore the rest */ |
1366 | *p = end; | |
38a8d560 ID |
1367 | |
1368 | dout("inc osdmap epoch %d max_osd %d\n", map->epoch, map->max_osd); | |
f24e9980 SW |
1369 | return map; |
1370 | ||
86f1742b ID |
1371 | e_inval: |
1372 | err = -EINVAL; | |
f24e9980 | 1373 | bad: |
38a8d560 ID |
1374 | pr_err("corrupt inc osdmap (%d) epoch %d off %d (%p of %p-%p)\n", |
1375 | err, epoch, (int)(*p - start), *p, start, end); | |
9ec7cab1 SW |
1376 | print_hex_dump(KERN_DEBUG, "osdmap: ", |
1377 | DUMP_PREFIX_OFFSET, 16, 1, | |
1378 | start, end - start, true); | |
f24e9980 SW |
1379 | if (newcrush) |
1380 | crush_destroy(newcrush); | |
1381 | return ERR_PTR(err); | |
1382 | } | |
1383 | ||
d30291b9 ID |
1384 | void ceph_oid_copy(struct ceph_object_id *dest, |
1385 | const struct ceph_object_id *src) | |
1386 | { | |
1387 | WARN_ON(!ceph_oid_empty(dest)); | |
1388 | ||
1389 | if (src->name != src->inline_name) { | |
1390 | /* very rare, see ceph_object_id definition */ | |
1391 | dest->name = kmalloc(src->name_len + 1, | |
1392 | GFP_NOIO | __GFP_NOFAIL); | |
1393 | } | |
1394 | ||
1395 | memcpy(dest->name, src->name, src->name_len + 1); | |
1396 | dest->name_len = src->name_len; | |
1397 | } | |
1398 | EXPORT_SYMBOL(ceph_oid_copy); | |
1399 | ||
1400 | static __printf(2, 0) | |
1401 | int oid_printf_vargs(struct ceph_object_id *oid, const char *fmt, va_list ap) | |
1402 | { | |
1403 | int len; | |
1404 | ||
1405 | WARN_ON(!ceph_oid_empty(oid)); | |
1406 | ||
1407 | len = vsnprintf(oid->inline_name, sizeof(oid->inline_name), fmt, ap); | |
1408 | if (len >= sizeof(oid->inline_name)) | |
1409 | return len; | |
1410 | ||
1411 | oid->name_len = len; | |
1412 | return 0; | |
1413 | } | |
1414 | ||
1415 | /* | |
1416 | * If oid doesn't fit into inline buffer, BUG. | |
1417 | */ | |
1418 | void ceph_oid_printf(struct ceph_object_id *oid, const char *fmt, ...) | |
1419 | { | |
1420 | va_list ap; | |
1421 | ||
1422 | va_start(ap, fmt); | |
1423 | BUG_ON(oid_printf_vargs(oid, fmt, ap)); | |
1424 | va_end(ap); | |
1425 | } | |
1426 | EXPORT_SYMBOL(ceph_oid_printf); | |
1427 | ||
1428 | static __printf(3, 0) | |
1429 | int oid_aprintf_vargs(struct ceph_object_id *oid, gfp_t gfp, | |
1430 | const char *fmt, va_list ap) | |
1431 | { | |
1432 | va_list aq; | |
1433 | int len; | |
1434 | ||
1435 | va_copy(aq, ap); | |
1436 | len = oid_printf_vargs(oid, fmt, aq); | |
1437 | va_end(aq); | |
1438 | ||
1439 | if (len) { | |
1440 | char *external_name; | |
1441 | ||
1442 | external_name = kmalloc(len + 1, gfp); | |
1443 | if (!external_name) | |
1444 | return -ENOMEM; | |
f24e9980 | 1445 | |
d30291b9 ID |
1446 | oid->name = external_name; |
1447 | WARN_ON(vsnprintf(oid->name, len + 1, fmt, ap) != len); | |
1448 | oid->name_len = len; | |
1449 | } | |
f24e9980 | 1450 | |
d30291b9 ID |
1451 | return 0; |
1452 | } | |
1453 | ||
1454 | /* | |
1455 | * If oid doesn't fit into inline buffer, allocate. | |
1456 | */ | |
1457 | int ceph_oid_aprintf(struct ceph_object_id *oid, gfp_t gfp, | |
1458 | const char *fmt, ...) | |
1459 | { | |
1460 | va_list ap; | |
1461 | int ret; | |
1462 | ||
1463 | va_start(ap, fmt); | |
1464 | ret = oid_aprintf_vargs(oid, gfp, fmt, ap); | |
1465 | va_end(ap); | |
1466 | ||
1467 | return ret; | |
1468 | } | |
1469 | EXPORT_SYMBOL(ceph_oid_aprintf); | |
1470 | ||
1471 | void ceph_oid_destroy(struct ceph_object_id *oid) | |
1472 | { | |
1473 | if (oid->name != oid->inline_name) | |
1474 | kfree(oid->name); | |
1475 | } | |
1476 | EXPORT_SYMBOL(ceph_oid_destroy); | |
f24e9980 | 1477 | |
6f3bfd45 ID |
1478 | static bool osds_valid(const struct ceph_osds *set) |
1479 | { | |
1480 | /* non-empty set */ | |
1481 | if (set->size > 0 && set->primary >= 0) | |
1482 | return true; | |
1483 | ||
1484 | /* empty can_shift_osds set */ | |
1485 | if (!set->size && set->primary == -1) | |
1486 | return true; | |
1487 | ||
1488 | /* empty !can_shift_osds set - all NONE */ | |
1489 | if (set->size > 0 && set->primary == -1) { | |
1490 | int i; | |
1491 | ||
1492 | for (i = 0; i < set->size; i++) { | |
1493 | if (set->osds[i] != CRUSH_ITEM_NONE) | |
1494 | break; | |
1495 | } | |
1496 | if (i == set->size) | |
1497 | return true; | |
1498 | } | |
1499 | ||
1500 | return false; | |
1501 | } | |
1502 | ||
1503 | void ceph_osds_copy(struct ceph_osds *dest, const struct ceph_osds *src) | |
1504 | { | |
1505 | memcpy(dest->osds, src->osds, src->size * sizeof(src->osds[0])); | |
1506 | dest->size = src->size; | |
1507 | dest->primary = src->primary; | |
1508 | } | |
1509 | ||
f24e9980 SW |
1510 | /* |
1511 | * calculate file layout from given offset, length. | |
1512 | * fill in correct oid, logical length, and object extent | |
1513 | * offset, length. | |
1514 | * | |
1515 | * for now, we write only a single su, until we can | |
1516 | * pass a stride back to the caller. | |
1517 | */ | |
d63b77f4 | 1518 | int ceph_calc_file_object_mapping(struct ceph_file_layout *layout, |
e8afad65 | 1519 | u64 off, u64 len, |
645a1025 | 1520 | u64 *ono, |
f24e9980 SW |
1521 | u64 *oxoff, u64 *oxlen) |
1522 | { | |
1523 | u32 osize = le32_to_cpu(layout->fl_object_size); | |
1524 | u32 su = le32_to_cpu(layout->fl_stripe_unit); | |
1525 | u32 sc = le32_to_cpu(layout->fl_stripe_count); | |
1526 | u32 bl, stripeno, stripepos, objsetno; | |
1527 | u32 su_per_object; | |
ff1d1f71 | 1528 | u64 t, su_offset; |
f24e9980 | 1529 | |
e8afad65 | 1530 | dout("mapping %llu~%llu osize %u fl_su %u\n", off, len, |
f24e9980 | 1531 | osize, su); |
d63b77f4 SW |
1532 | if (su == 0 || sc == 0) |
1533 | goto invalid; | |
35e054a6 | 1534 | su_per_object = osize / su; |
d63b77f4 SW |
1535 | if (su_per_object == 0) |
1536 | goto invalid; | |
f24e9980 SW |
1537 | dout("osize %u / su %u = su_per_object %u\n", osize, su, |
1538 | su_per_object); | |
1539 | ||
d63b77f4 SW |
1540 | if ((su & ~PAGE_MASK) != 0) |
1541 | goto invalid; | |
1542 | ||
f24e9980 SW |
1543 | /* bl = *off / su; */ |
1544 | t = off; | |
1545 | do_div(t, su); | |
1546 | bl = t; | |
1547 | dout("off %llu / su %u = bl %u\n", off, su, bl); | |
1548 | ||
1549 | stripeno = bl / sc; | |
1550 | stripepos = bl % sc; | |
1551 | objsetno = stripeno / su_per_object; | |
1552 | ||
645a1025 | 1553 | *ono = objsetno * sc + stripepos; |
95c96174 | 1554 | dout("objset %u * sc %u = ono %u\n", objsetno, sc, (unsigned int)*ono); |
645a1025 SW |
1555 | |
1556 | /* *oxoff = *off % layout->fl_stripe_unit; # offset in su */ | |
f24e9980 | 1557 | t = off; |
ff1d1f71 NW |
1558 | su_offset = do_div(t, su); |
1559 | *oxoff = su_offset + (stripeno % su_per_object) * su; | |
1560 | ||
1561 | /* | |
1562 | * Calculate the length of the extent being written to the selected | |
e8afad65 | 1563 | * object. This is the minimum of the full length requested (len) or |
ff1d1f71 NW |
1564 | * the remainder of the current stripe being written to. |
1565 | */ | |
e8afad65 | 1566 | *oxlen = min_t(u64, len, su - su_offset); |
f24e9980 SW |
1567 | |
1568 | dout(" obj extent %llu~%llu\n", *oxoff, *oxlen); | |
d63b77f4 SW |
1569 | return 0; |
1570 | ||
1571 | invalid: | |
1572 | dout(" invalid layout\n"); | |
1573 | *ono = 0; | |
1574 | *oxoff = 0; | |
1575 | *oxlen = 0; | |
1576 | return -EINVAL; | |
f24e9980 | 1577 | } |
3d14c5d2 | 1578 | EXPORT_SYMBOL(ceph_calc_file_object_mapping); |
f24e9980 SW |
1579 | |
1580 | /* | |
d9591f5e ID |
1581 | * Map an object into a PG. |
1582 | * | |
1583 | * Should only be called with target_oid and target_oloc (as opposed to | |
1584 | * base_oid and base_oloc), since tiering isn't taken into account. | |
f24e9980 | 1585 | */ |
d9591f5e ID |
1586 | int ceph_object_locator_to_pg(struct ceph_osdmap *osdmap, |
1587 | struct ceph_object_id *oid, | |
1588 | struct ceph_object_locator *oloc, | |
1589 | struct ceph_pg *raw_pgid) | |
f24e9980 | 1590 | { |
7c13cb64 | 1591 | struct ceph_pg_pool_info *pi; |
f24e9980 | 1592 | |
d9591f5e | 1593 | pi = ceph_pg_pool_by_id(osdmap, oloc->pool); |
7c13cb64 | 1594 | if (!pi) |
d9591f5e | 1595 | return -ENOENT; |
f24e9980 | 1596 | |
d9591f5e ID |
1597 | raw_pgid->pool = oloc->pool; |
1598 | raw_pgid->seed = ceph_str_hash(pi->object_hash, oid->name, | |
1599 | oid->name_len); | |
7c13cb64 | 1600 | |
d9591f5e ID |
1601 | dout("%s %*pE -> raw_pgid %llu.%x\n", __func__, oid->name_len, |
1602 | oid->name, raw_pgid->pool, raw_pgid->seed); | |
f24e9980 SW |
1603 | return 0; |
1604 | } | |
d9591f5e | 1605 | EXPORT_SYMBOL(ceph_object_locator_to_pg); |
f24e9980 | 1606 | |
6f3bfd45 ID |
1607 | /* |
1608 | * Map a raw PG (full precision ps) into an actual PG. | |
1609 | */ | |
1610 | static void raw_pg_to_pg(struct ceph_pg_pool_info *pi, | |
1611 | const struct ceph_pg *raw_pgid, | |
1612 | struct ceph_pg *pgid) | |
1613 | { | |
1614 | pgid->pool = raw_pgid->pool; | |
1615 | pgid->seed = ceph_stable_mod(raw_pgid->seed, pi->pg_num, | |
1616 | pi->pg_num_mask); | |
1617 | } | |
1618 | ||
1619 | /* | |
1620 | * Map a raw PG (full precision ps) into a placement ps (placement | |
1621 | * seed). Include pool id in that value so that different pools don't | |
1622 | * use the same seeds. | |
1623 | */ | |
1624 | static u32 raw_pg_to_pps(struct ceph_pg_pool_info *pi, | |
1625 | const struct ceph_pg *raw_pgid) | |
1626 | { | |
1627 | if (pi->flags & CEPH_POOL_FLAG_HASHPSPOOL) { | |
1628 | /* hash pool id and seed so that pool PGs do not overlap */ | |
1629 | return crush_hash32_2(CRUSH_HASH_RJENKINS1, | |
1630 | ceph_stable_mod(raw_pgid->seed, | |
1631 | pi->pgp_num, | |
1632 | pi->pgp_num_mask), | |
1633 | raw_pgid->pool); | |
1634 | } else { | |
1635 | /* | |
1636 | * legacy behavior: add ps and pool together. this is | |
1637 | * not a great approach because the PGs from each pool | |
1638 | * will overlap on top of each other: 0.5 == 1.4 == | |
1639 | * 2.3 == ... | |
1640 | */ | |
1641 | return ceph_stable_mod(raw_pgid->seed, pi->pgp_num, | |
1642 | pi->pgp_num_mask) + | |
1643 | (unsigned)raw_pgid->pool; | |
1644 | } | |
1645 | } | |
1646 | ||
9d521470 ID |
1647 | static int do_crush(struct ceph_osdmap *map, int ruleno, int x, |
1648 | int *result, int result_max, | |
1649 | const __u32 *weight, int weight_max) | |
e8ef19c4 | 1650 | { |
9d521470 ID |
1651 | int r; |
1652 | ||
1653 | BUG_ON(result_max > CEPH_PG_MAX_SIZE); | |
1654 | ||
1655 | mutex_lock(&map->crush_scratch_mutex); | |
1656 | r = crush_do_rule(map->crush, ruleno, x, result, result_max, | |
1657 | weight, weight_max, map->crush_scratch_ary); | |
1658 | mutex_unlock(&map->crush_scratch_mutex); | |
e8ef19c4 | 1659 | |
9d521470 | 1660 | return r; |
e8ef19c4 ID |
1661 | } |
1662 | ||
2bd93d4d | 1663 | /* |
6f3bfd45 ID |
1664 | * Calculate raw set (CRUSH output) for given PG. The result may |
1665 | * contain nonexistent OSDs. ->primary is undefined for a raw set. | |
2bd93d4d | 1666 | * |
6f3bfd45 | 1667 | * Placement seed (CRUSH input) is returned through @ppps. |
2bd93d4d | 1668 | */ |
6f3bfd45 ID |
1669 | static void pg_to_raw_osds(struct ceph_osdmap *osdmap, |
1670 | struct ceph_pg_pool_info *pi, | |
1671 | const struct ceph_pg *raw_pgid, | |
1672 | struct ceph_osds *raw, | |
1673 | u32 *ppps) | |
2bd93d4d | 1674 | { |
6f3bfd45 | 1675 | u32 pps = raw_pg_to_pps(pi, raw_pgid); |
2bd93d4d ID |
1676 | int ruleno; |
1677 | int len; | |
1678 | ||
6f3bfd45 ID |
1679 | ceph_osds_init(raw); |
1680 | if (ppps) | |
1681 | *ppps = pps; | |
1682 | ||
1683 | ruleno = crush_find_rule(osdmap->crush, pi->crush_ruleset, pi->type, | |
1684 | pi->size); | |
2bd93d4d ID |
1685 | if (ruleno < 0) { |
1686 | pr_err("no crush rule: pool %lld ruleset %d type %d size %d\n", | |
6f3bfd45 ID |
1687 | pi->id, pi->crush_ruleset, pi->type, pi->size); |
1688 | return; | |
2bd93d4d ID |
1689 | } |
1690 | ||
6f3bfd45 ID |
1691 | len = do_crush(osdmap, ruleno, pps, raw->osds, |
1692 | min_t(int, pi->size, ARRAY_SIZE(raw->osds)), | |
2bd93d4d ID |
1693 | osdmap->osd_weight, osdmap->max_osd); |
1694 | if (len < 0) { | |
1695 | pr_err("error %d from crush rule %d: pool %lld ruleset %d type %d size %d\n", | |
6f3bfd45 ID |
1696 | len, ruleno, pi->id, pi->crush_ruleset, pi->type, |
1697 | pi->size); | |
1698 | return; | |
2bd93d4d ID |
1699 | } |
1700 | ||
6f3bfd45 | 1701 | raw->size = len; |
2bd93d4d ID |
1702 | } |
1703 | ||
1704 | /* | |
6f3bfd45 ID |
1705 | * Given raw set, calculate up set and up primary. By definition of an |
1706 | * up set, the result won't contain nonexistent or down OSDs. | |
2bd93d4d | 1707 | * |
6f3bfd45 ID |
1708 | * This is done in-place - on return @set is the up set. If it's |
1709 | * empty, ->primary will remain undefined. | |
2bd93d4d | 1710 | */ |
6f3bfd45 ID |
1711 | static void raw_to_up_osds(struct ceph_osdmap *osdmap, |
1712 | struct ceph_pg_pool_info *pi, | |
1713 | struct ceph_osds *set) | |
2bd93d4d | 1714 | { |
2bd93d4d ID |
1715 | int i; |
1716 | ||
6f3bfd45 ID |
1717 | /* ->primary is undefined for a raw set */ |
1718 | BUG_ON(set->primary != -1); | |
1719 | ||
1720 | if (ceph_can_shift_osds(pi)) { | |
2bd93d4d ID |
1721 | int removed = 0; |
1722 | ||
6f3bfd45 ID |
1723 | /* shift left */ |
1724 | for (i = 0; i < set->size; i++) { | |
1725 | if (ceph_osd_is_down(osdmap, set->osds[i])) { | |
2bd93d4d ID |
1726 | removed++; |
1727 | continue; | |
1728 | } | |
1729 | if (removed) | |
6f3bfd45 | 1730 | set->osds[i - removed] = set->osds[i]; |
2bd93d4d | 1731 | } |
6f3bfd45 ID |
1732 | set->size -= removed; |
1733 | if (set->size > 0) | |
1734 | set->primary = set->osds[0]; | |
2bd93d4d | 1735 | } else { |
6f3bfd45 ID |
1736 | /* set down/dne devices to NONE */ |
1737 | for (i = set->size - 1; i >= 0; i--) { | |
1738 | if (ceph_osd_is_down(osdmap, set->osds[i])) | |
1739 | set->osds[i] = CRUSH_ITEM_NONE; | |
2bd93d4d | 1740 | else |
6f3bfd45 | 1741 | set->primary = set->osds[i]; |
2bd93d4d ID |
1742 | } |
1743 | } | |
2bd93d4d ID |
1744 | } |
1745 | ||
6f3bfd45 ID |
1746 | static void apply_primary_affinity(struct ceph_osdmap *osdmap, |
1747 | struct ceph_pg_pool_info *pi, | |
1748 | u32 pps, | |
1749 | struct ceph_osds *up) | |
47ec1f3c ID |
1750 | { |
1751 | int i; | |
1752 | int pos = -1; | |
1753 | ||
1754 | /* | |
1755 | * Do we have any non-default primary_affinity values for these | |
1756 | * osds? | |
1757 | */ | |
1758 | if (!osdmap->osd_primary_affinity) | |
1759 | return; | |
1760 | ||
6f3bfd45 ID |
1761 | for (i = 0; i < up->size; i++) { |
1762 | int osd = up->osds[i]; | |
92b2e751 ID |
1763 | |
1764 | if (osd != CRUSH_ITEM_NONE && | |
1765 | osdmap->osd_primary_affinity[osd] != | |
47ec1f3c ID |
1766 | CEPH_OSD_DEFAULT_PRIMARY_AFFINITY) { |
1767 | break; | |
1768 | } | |
1769 | } | |
6f3bfd45 | 1770 | if (i == up->size) |
47ec1f3c ID |
1771 | return; |
1772 | ||
1773 | /* | |
1774 | * Pick the primary. Feed both the seed (for the pg) and the | |
1775 | * osd into the hash/rng so that a proportional fraction of an | |
1776 | * osd's pgs get rejected as primary. | |
1777 | */ | |
6f3bfd45 ID |
1778 | for (i = 0; i < up->size; i++) { |
1779 | int osd = up->osds[i]; | |
47ec1f3c ID |
1780 | u32 aff; |
1781 | ||
47ec1f3c ID |
1782 | if (osd == CRUSH_ITEM_NONE) |
1783 | continue; | |
1784 | ||
1785 | aff = osdmap->osd_primary_affinity[osd]; | |
1786 | if (aff < CEPH_OSD_MAX_PRIMARY_AFFINITY && | |
1787 | (crush_hash32_2(CRUSH_HASH_RJENKINS1, | |
1788 | pps, osd) >> 16) >= aff) { | |
1789 | /* | |
1790 | * We chose not to use this primary. Note it | |
1791 | * anyway as a fallback in case we don't pick | |
1792 | * anyone else, but keep looking. | |
1793 | */ | |
1794 | if (pos < 0) | |
1795 | pos = i; | |
1796 | } else { | |
1797 | pos = i; | |
1798 | break; | |
1799 | } | |
1800 | } | |
1801 | if (pos < 0) | |
1802 | return; | |
1803 | ||
6f3bfd45 | 1804 | up->primary = up->osds[pos]; |
47ec1f3c | 1805 | |
6f3bfd45 | 1806 | if (ceph_can_shift_osds(pi) && pos > 0) { |
47ec1f3c ID |
1807 | /* move the new primary to the front */ |
1808 | for (i = pos; i > 0; i--) | |
6f3bfd45 ID |
1809 | up->osds[i] = up->osds[i - 1]; |
1810 | up->osds[0] = up->primary; | |
47ec1f3c ID |
1811 | } |
1812 | } | |
1813 | ||
45966c34 | 1814 | /* |
6f3bfd45 | 1815 | * Get pg_temp and primary_temp mappings for given PG. |
45966c34 | 1816 | * |
6f3bfd45 ID |
1817 | * Note that a PG may have none, only pg_temp, only primary_temp or |
1818 | * both pg_temp and primary_temp mappings. This means @temp isn't | |
1819 | * always a valid OSD set on return: in the "only primary_temp" case, | |
1820 | * @temp will have its ->primary >= 0 but ->size == 0. | |
45966c34 | 1821 | */ |
6f3bfd45 ID |
1822 | static void get_temp_osds(struct ceph_osdmap *osdmap, |
1823 | struct ceph_pg_pool_info *pi, | |
1824 | const struct ceph_pg *raw_pgid, | |
1825 | struct ceph_osds *temp) | |
45966c34 | 1826 | { |
6f3bfd45 | 1827 | struct ceph_pg pgid; |
45966c34 | 1828 | struct ceph_pg_mapping *pg; |
45966c34 ID |
1829 | int i; |
1830 | ||
6f3bfd45 ID |
1831 | raw_pg_to_pg(pi, raw_pgid, &pgid); |
1832 | ceph_osds_init(temp); | |
45966c34 ID |
1833 | |
1834 | /* pg_temp? */ | |
1835 | pg = __lookup_pg_mapping(&osdmap->pg_temp, pgid); | |
1836 | if (pg) { | |
45966c34 ID |
1837 | for (i = 0; i < pg->pg_temp.len; i++) { |
1838 | if (ceph_osd_is_down(osdmap, pg->pg_temp.osds[i])) { | |
6f3bfd45 | 1839 | if (ceph_can_shift_osds(pi)) |
45966c34 | 1840 | continue; |
6f3bfd45 ID |
1841 | |
1842 | temp->osds[temp->size++] = CRUSH_ITEM_NONE; | |
45966c34 | 1843 | } else { |
6f3bfd45 | 1844 | temp->osds[temp->size++] = pg->pg_temp.osds[i]; |
45966c34 ID |
1845 | } |
1846 | } | |
1847 | ||
1848 | /* apply pg_temp's primary */ | |
6f3bfd45 ID |
1849 | for (i = 0; i < temp->size; i++) { |
1850 | if (temp->osds[i] != CRUSH_ITEM_NONE) { | |
1851 | temp->primary = temp->osds[i]; | |
45966c34 ID |
1852 | break; |
1853 | } | |
1854 | } | |
45966c34 ID |
1855 | } |
1856 | ||
5e8d4d36 ID |
1857 | /* primary_temp? */ |
1858 | pg = __lookup_pg_mapping(&osdmap->primary_temp, pgid); | |
1859 | if (pg) | |
6f3bfd45 | 1860 | temp->primary = pg->primary_temp.osd; |
45966c34 ID |
1861 | } |
1862 | ||
d85b7056 | 1863 | /* |
6f3bfd45 | 1864 | * Map a PG to its acting set as well as its up set. |
ac972230 | 1865 | * |
6f3bfd45 ID |
1866 | * Acting set is used for data mapping purposes, while up set can be |
1867 | * recorded for detecting interval changes and deciding whether to | |
1868 | * resend a request. | |
d85b7056 | 1869 | */ |
6f3bfd45 ID |
1870 | void ceph_pg_to_up_acting_osds(struct ceph_osdmap *osdmap, |
1871 | const struct ceph_pg *raw_pgid, | |
1872 | struct ceph_osds *up, | |
1873 | struct ceph_osds *acting) | |
d85b7056 | 1874 | { |
6f3bfd45 | 1875 | struct ceph_pg_pool_info *pi; |
ac972230 | 1876 | u32 pps; |
d85b7056 | 1877 | |
6f3bfd45 ID |
1878 | pi = ceph_pg_pool_by_id(osdmap, raw_pgid->pool); |
1879 | if (!pi) { | |
1880 | ceph_osds_init(up); | |
1881 | ceph_osds_init(acting); | |
1882 | goto out; | |
8008ab10 | 1883 | } |
d85b7056 | 1884 | |
6f3bfd45 ID |
1885 | pg_to_raw_osds(osdmap, pi, raw_pgid, up, &pps); |
1886 | raw_to_up_osds(osdmap, pi, up); | |
1887 | apply_primary_affinity(osdmap, pi, pps, up); | |
1888 | get_temp_osds(osdmap, pi, raw_pgid, acting); | |
1889 | if (!acting->size) { | |
1890 | memcpy(acting->osds, up->osds, up->size * sizeof(up->osds[0])); | |
1891 | acting->size = up->size; | |
1892 | if (acting->primary == -1) | |
1893 | acting->primary = up->primary; | |
8008ab10 | 1894 | } |
6f3bfd45 ID |
1895 | out: |
1896 | WARN_ON(!osds_valid(up) || !osds_valid(acting)); | |
d85b7056 SW |
1897 | } |
1898 | ||
f24e9980 | 1899 | /* |
f81f1633 | 1900 | * Return acting primary for given PG, or -1 if none. |
f24e9980 | 1901 | */ |
f81f1633 ID |
1902 | int ceph_pg_to_acting_primary(struct ceph_osdmap *osdmap, |
1903 | const struct ceph_pg *raw_pgid) | |
f24e9980 | 1904 | { |
6f3bfd45 | 1905 | struct ceph_osds up, acting; |
f24e9980 | 1906 | |
f81f1633 | 1907 | ceph_pg_to_up_acting_osds(osdmap, raw_pgid, &up, &acting); |
6f3bfd45 | 1908 | return acting.primary; |
f24e9980 | 1909 | } |
f81f1633 | 1910 | EXPORT_SYMBOL(ceph_pg_to_acting_primary); |