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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) | |
04812acf ID |
600 | pi->min_size = ceph_decode_8(p); |
601 | else | |
602 | pi->min_size = pi->size - pi->size / 2; | |
17a13e40 ID |
603 | |
604 | if (ev >= 8) | |
605 | *p += 8 + 8; /* skip quota_max_* */ | |
606 | ||
607 | if (ev >= 9) { | |
608 | /* skip tiers */ | |
609 | num = ceph_decode_32(p); | |
610 | *p += num * 8; | |
611 | ||
612 | *p += 8; /* skip tier_of */ | |
613 | *p += 1; /* skip cache_mode */ | |
614 | ||
615 | pi->read_tier = ceph_decode_64(p); | |
616 | pi->write_tier = ceph_decode_64(p); | |
617 | } else { | |
618 | pi->read_tier = -1; | |
619 | pi->write_tier = -1; | |
620 | } | |
4f6a7e5e | 621 | |
04812acf ID |
622 | if (ev >= 10) { |
623 | /* skip properties */ | |
624 | num = ceph_decode_32(p); | |
625 | while (num--) { | |
626 | len = ceph_decode_32(p); | |
627 | *p += len; /* key */ | |
628 | len = ceph_decode_32(p); | |
629 | *p += len; /* val */ | |
630 | } | |
631 | } | |
632 | ||
633 | if (ev >= 11) { | |
634 | /* skip hit_set_params */ | |
635 | *p += 1 + 1; /* versions */ | |
636 | len = ceph_decode_32(p); | |
637 | *p += len; | |
638 | ||
639 | *p += 4; /* skip hit_set_period */ | |
640 | *p += 4; /* skip hit_set_count */ | |
641 | } | |
642 | ||
643 | if (ev >= 12) | |
644 | *p += 4; /* skip stripe_width */ | |
645 | ||
646 | if (ev >= 13) { | |
647 | *p += 8; /* skip target_max_bytes */ | |
648 | *p += 8; /* skip target_max_objects */ | |
649 | *p += 4; /* skip cache_target_dirty_ratio_micro */ | |
650 | *p += 4; /* skip cache_target_full_ratio_micro */ | |
651 | *p += 4; /* skip cache_min_flush_age */ | |
652 | *p += 4; /* skip cache_min_evict_age */ | |
653 | } | |
654 | ||
655 | if (ev >= 14) { | |
656 | /* skip erasure_code_profile */ | |
657 | len = ceph_decode_32(p); | |
658 | *p += len; | |
659 | } | |
660 | ||
661 | if (ev >= 15) | |
662 | pi->last_force_request_resend = ceph_decode_32(p); | |
663 | else | |
664 | pi->last_force_request_resend = 0; | |
665 | ||
4f6a7e5e SW |
666 | /* ignore the rest */ |
667 | ||
668 | *p = pool_end; | |
669 | calc_pg_masks(pi); | |
73a7e693 SW |
670 | return 0; |
671 | ||
672 | bad: | |
673 | return -EINVAL; | |
efd7576b SW |
674 | } |
675 | ||
0f70c7ee | 676 | static int decode_pool_names(void **p, void *end, struct ceph_osdmap *map) |
2844a76a SW |
677 | { |
678 | struct ceph_pg_pool_info *pi; | |
4f6a7e5e SW |
679 | u32 num, len; |
680 | u64 pool; | |
2844a76a SW |
681 | |
682 | ceph_decode_32_safe(p, end, num, bad); | |
683 | dout(" %d pool names\n", num); | |
684 | while (num--) { | |
4f6a7e5e | 685 | ceph_decode_64_safe(p, end, pool, bad); |
2844a76a | 686 | ceph_decode_32_safe(p, end, len, bad); |
4f6a7e5e | 687 | dout(" pool %llu len %d\n", pool, len); |
ad3b904c | 688 | ceph_decode_need(p, end, len, bad); |
2844a76a SW |
689 | pi = __lookup_pg_pool(&map->pg_pools, pool); |
690 | if (pi) { | |
ad3b904c XW |
691 | char *name = kstrndup(*p, len, GFP_NOFS); |
692 | ||
693 | if (!name) | |
694 | return -ENOMEM; | |
2844a76a | 695 | kfree(pi->name); |
ad3b904c XW |
696 | pi->name = name; |
697 | dout(" name is %s\n", pi->name); | |
2844a76a SW |
698 | } |
699 | *p += len; | |
700 | } | |
701 | return 0; | |
702 | ||
703 | bad: | |
704 | return -EINVAL; | |
705 | } | |
706 | ||
707 | /* | |
708 | * osd map | |
709 | */ | |
e5253a7b ID |
710 | struct ceph_osdmap *ceph_osdmap_alloc(void) |
711 | { | |
712 | struct ceph_osdmap *map; | |
713 | ||
714 | map = kzalloc(sizeof(*map), GFP_NOIO); | |
715 | if (!map) | |
716 | return NULL; | |
717 | ||
718 | map->pg_pools = RB_ROOT; | |
719 | map->pool_max = -1; | |
720 | map->pg_temp = RB_ROOT; | |
721 | map->primary_temp = RB_ROOT; | |
722 | mutex_init(&map->crush_scratch_mutex); | |
723 | ||
724 | return map; | |
725 | } | |
726 | ||
2844a76a SW |
727 | void ceph_osdmap_destroy(struct ceph_osdmap *map) |
728 | { | |
729 | dout("osdmap_destroy %p\n", map); | |
730 | if (map->crush) | |
731 | crush_destroy(map->crush); | |
732 | while (!RB_EMPTY_ROOT(&map->pg_temp)) { | |
733 | struct ceph_pg_mapping *pg = | |
734 | rb_entry(rb_first(&map->pg_temp), | |
735 | struct ceph_pg_mapping, node); | |
736 | rb_erase(&pg->node, &map->pg_temp); | |
737 | kfree(pg); | |
738 | } | |
9686f94c ID |
739 | while (!RB_EMPTY_ROOT(&map->primary_temp)) { |
740 | struct ceph_pg_mapping *pg = | |
741 | rb_entry(rb_first(&map->primary_temp), | |
742 | struct ceph_pg_mapping, node); | |
743 | rb_erase(&pg->node, &map->primary_temp); | |
744 | kfree(pg); | |
745 | } | |
2844a76a SW |
746 | while (!RB_EMPTY_ROOT(&map->pg_pools)) { |
747 | struct ceph_pg_pool_info *pi = | |
748 | rb_entry(rb_first(&map->pg_pools), | |
749 | struct ceph_pg_pool_info, node); | |
750 | __remove_pg_pool(&map->pg_pools, pi); | |
751 | } | |
752 | kfree(map->osd_state); | |
753 | kfree(map->osd_weight); | |
754 | kfree(map->osd_addr); | |
2cfa34f2 | 755 | kfree(map->osd_primary_affinity); |
2844a76a SW |
756 | kfree(map); |
757 | } | |
758 | ||
759 | /* | |
4d60351f ID |
760 | * Adjust max_osd value, (re)allocate arrays. |
761 | * | |
762 | * The new elements are properly initialized. | |
2844a76a SW |
763 | */ |
764 | static int osdmap_set_max_osd(struct ceph_osdmap *map, int max) | |
765 | { | |
766 | u8 *state; | |
2844a76a | 767 | u32 *weight; |
4d60351f ID |
768 | struct ceph_entity_addr *addr; |
769 | int i; | |
2844a76a | 770 | |
4d60351f | 771 | state = krealloc(map->osd_state, max*sizeof(*state), GFP_NOFS); |
589506f1 LR |
772 | if (!state) |
773 | return -ENOMEM; | |
774 | map->osd_state = state; | |
775 | ||
4d60351f | 776 | weight = krealloc(map->osd_weight, max*sizeof(*weight), GFP_NOFS); |
589506f1 LR |
777 | if (!weight) |
778 | return -ENOMEM; | |
779 | map->osd_weight = weight; | |
4d60351f | 780 | |
589506f1 LR |
781 | addr = krealloc(map->osd_addr, max*sizeof(*addr), GFP_NOFS); |
782 | if (!addr) | |
2844a76a | 783 | return -ENOMEM; |
589506f1 | 784 | map->osd_addr = addr; |
2844a76a | 785 | |
4d60351f | 786 | for (i = map->max_osd; i < max; i++) { |
589506f1 LR |
787 | map->osd_state[i] = 0; |
788 | map->osd_weight[i] = CEPH_OSD_OUT; | |
789 | memset(map->osd_addr + i, 0, sizeof(*map->osd_addr)); | |
2844a76a SW |
790 | } |
791 | ||
2cfa34f2 ID |
792 | if (map->osd_primary_affinity) { |
793 | u32 *affinity; | |
794 | ||
795 | affinity = krealloc(map->osd_primary_affinity, | |
796 | max*sizeof(*affinity), GFP_NOFS); | |
797 | if (!affinity) | |
798 | return -ENOMEM; | |
589506f1 | 799 | map->osd_primary_affinity = affinity; |
2cfa34f2 ID |
800 | |
801 | for (i = map->max_osd; i < max; i++) | |
589506f1 LR |
802 | map->osd_primary_affinity[i] = |
803 | CEPH_OSD_DEFAULT_PRIMARY_AFFINITY; | |
2cfa34f2 ID |
804 | } |
805 | ||
2844a76a | 806 | map->max_osd = max; |
4d60351f | 807 | |
2844a76a SW |
808 | return 0; |
809 | } | |
810 | ||
ec7af972 ID |
811 | #define OSDMAP_WRAPPER_COMPAT_VER 7 |
812 | #define OSDMAP_CLIENT_DATA_COMPAT_VER 1 | |
813 | ||
814 | /* | |
815 | * Return 0 or error. On success, *v is set to 0 for old (v6) osdmaps, | |
816 | * to struct_v of the client_data section for new (v7 and above) | |
817 | * osdmaps. | |
818 | */ | |
819 | static int get_osdmap_client_data_v(void **p, void *end, | |
820 | const char *prefix, u8 *v) | |
821 | { | |
822 | u8 struct_v; | |
823 | ||
824 | ceph_decode_8_safe(p, end, struct_v, e_inval); | |
825 | if (struct_v >= 7) { | |
826 | u8 struct_compat; | |
827 | ||
828 | ceph_decode_8_safe(p, end, struct_compat, e_inval); | |
829 | if (struct_compat > OSDMAP_WRAPPER_COMPAT_VER) { | |
b9a67899 JP |
830 | pr_warn("got v %d cv %d > %d of %s ceph_osdmap\n", |
831 | struct_v, struct_compat, | |
832 | OSDMAP_WRAPPER_COMPAT_VER, prefix); | |
ec7af972 ID |
833 | return -EINVAL; |
834 | } | |
835 | *p += 4; /* ignore wrapper struct_len */ | |
836 | ||
837 | ceph_decode_8_safe(p, end, struct_v, e_inval); | |
838 | ceph_decode_8_safe(p, end, struct_compat, e_inval); | |
839 | if (struct_compat > OSDMAP_CLIENT_DATA_COMPAT_VER) { | |
b9a67899 JP |
840 | pr_warn("got v %d cv %d > %d of %s ceph_osdmap client data\n", |
841 | struct_v, struct_compat, | |
842 | OSDMAP_CLIENT_DATA_COMPAT_VER, prefix); | |
ec7af972 ID |
843 | return -EINVAL; |
844 | } | |
845 | *p += 4; /* ignore client data struct_len */ | |
846 | } else { | |
847 | u16 version; | |
848 | ||
849 | *p -= 1; | |
850 | ceph_decode_16_safe(p, end, version, e_inval); | |
851 | if (version < 6) { | |
b9a67899 JP |
852 | pr_warn("got v %d < 6 of %s ceph_osdmap\n", |
853 | version, prefix); | |
ec7af972 ID |
854 | return -EINVAL; |
855 | } | |
856 | ||
857 | /* old osdmap enconding */ | |
858 | struct_v = 0; | |
859 | } | |
860 | ||
861 | *v = struct_v; | |
862 | return 0; | |
863 | ||
864 | e_inval: | |
865 | return -EINVAL; | |
866 | } | |
867 | ||
433fbdd3 ID |
868 | static int __decode_pools(void **p, void *end, struct ceph_osdmap *map, |
869 | bool incremental) | |
870 | { | |
871 | u32 n; | |
872 | ||
873 | ceph_decode_32_safe(p, end, n, e_inval); | |
874 | while (n--) { | |
875 | struct ceph_pg_pool_info *pi; | |
876 | u64 pool; | |
877 | int ret; | |
878 | ||
879 | ceph_decode_64_safe(p, end, pool, e_inval); | |
880 | ||
881 | pi = __lookup_pg_pool(&map->pg_pools, pool); | |
882 | if (!incremental || !pi) { | |
883 | pi = kzalloc(sizeof(*pi), GFP_NOFS); | |
884 | if (!pi) | |
885 | return -ENOMEM; | |
886 | ||
887 | pi->id = pool; | |
888 | ||
889 | ret = __insert_pg_pool(&map->pg_pools, pi); | |
890 | if (ret) { | |
891 | kfree(pi); | |
892 | return ret; | |
893 | } | |
894 | } | |
895 | ||
896 | ret = decode_pool(p, end, pi); | |
897 | if (ret) | |
898 | return ret; | |
899 | } | |
900 | ||
901 | return 0; | |
902 | ||
903 | e_inval: | |
904 | return -EINVAL; | |
905 | } | |
906 | ||
907 | static int decode_pools(void **p, void *end, struct ceph_osdmap *map) | |
908 | { | |
909 | return __decode_pools(p, end, map, false); | |
910 | } | |
911 | ||
912 | static int decode_new_pools(void **p, void *end, struct ceph_osdmap *map) | |
913 | { | |
914 | return __decode_pools(p, end, map, true); | |
915 | } | |
916 | ||
10db634e ID |
917 | static int __decode_pg_temp(void **p, void *end, struct ceph_osdmap *map, |
918 | bool incremental) | |
919 | { | |
920 | u32 n; | |
921 | ||
922 | ceph_decode_32_safe(p, end, n, e_inval); | |
923 | while (n--) { | |
924 | struct ceph_pg pgid; | |
925 | u32 len, i; | |
926 | int ret; | |
927 | ||
928 | ret = ceph_decode_pgid(p, end, &pgid); | |
929 | if (ret) | |
930 | return ret; | |
931 | ||
932 | ceph_decode_32_safe(p, end, len, e_inval); | |
933 | ||
934 | ret = __remove_pg_mapping(&map->pg_temp, pgid); | |
935 | BUG_ON(!incremental && ret != -ENOENT); | |
936 | ||
937 | if (!incremental || len > 0) { | |
938 | struct ceph_pg_mapping *pg; | |
939 | ||
940 | ceph_decode_need(p, end, len*sizeof(u32), e_inval); | |
941 | ||
942 | if (len > (UINT_MAX - sizeof(*pg)) / sizeof(u32)) | |
943 | return -EINVAL; | |
944 | ||
945 | pg = kzalloc(sizeof(*pg) + len*sizeof(u32), GFP_NOFS); | |
946 | if (!pg) | |
947 | return -ENOMEM; | |
948 | ||
949 | pg->pgid = pgid; | |
35a935d7 | 950 | pg->pg_temp.len = len; |
10db634e | 951 | for (i = 0; i < len; i++) |
35a935d7 | 952 | pg->pg_temp.osds[i] = ceph_decode_32(p); |
10db634e ID |
953 | |
954 | ret = __insert_pg_mapping(pg, &map->pg_temp); | |
955 | if (ret) { | |
956 | kfree(pg); | |
957 | return ret; | |
958 | } | |
959 | } | |
960 | } | |
961 | ||
962 | return 0; | |
963 | ||
964 | e_inval: | |
965 | return -EINVAL; | |
966 | } | |
967 | ||
968 | static int decode_pg_temp(void **p, void *end, struct ceph_osdmap *map) | |
969 | { | |
970 | return __decode_pg_temp(p, end, map, false); | |
971 | } | |
972 | ||
973 | static int decode_new_pg_temp(void **p, void *end, struct ceph_osdmap *map) | |
974 | { | |
975 | return __decode_pg_temp(p, end, map, true); | |
976 | } | |
977 | ||
d286de79 ID |
978 | static int __decode_primary_temp(void **p, void *end, struct ceph_osdmap *map, |
979 | bool incremental) | |
980 | { | |
981 | u32 n; | |
982 | ||
983 | ceph_decode_32_safe(p, end, n, e_inval); | |
984 | while (n--) { | |
985 | struct ceph_pg pgid; | |
986 | u32 osd; | |
987 | int ret; | |
988 | ||
989 | ret = ceph_decode_pgid(p, end, &pgid); | |
990 | if (ret) | |
991 | return ret; | |
992 | ||
993 | ceph_decode_32_safe(p, end, osd, e_inval); | |
994 | ||
995 | ret = __remove_pg_mapping(&map->primary_temp, pgid); | |
996 | BUG_ON(!incremental && ret != -ENOENT); | |
997 | ||
998 | if (!incremental || osd != (u32)-1) { | |
999 | struct ceph_pg_mapping *pg; | |
1000 | ||
1001 | pg = kzalloc(sizeof(*pg), GFP_NOFS); | |
1002 | if (!pg) | |
1003 | return -ENOMEM; | |
1004 | ||
1005 | pg->pgid = pgid; | |
1006 | pg->primary_temp.osd = osd; | |
1007 | ||
1008 | ret = __insert_pg_mapping(pg, &map->primary_temp); | |
1009 | if (ret) { | |
1010 | kfree(pg); | |
1011 | return ret; | |
1012 | } | |
1013 | } | |
1014 | } | |
1015 | ||
1016 | return 0; | |
1017 | ||
1018 | e_inval: | |
1019 | return -EINVAL; | |
1020 | } | |
1021 | ||
1022 | static int decode_primary_temp(void **p, void *end, struct ceph_osdmap *map) | |
1023 | { | |
1024 | return __decode_primary_temp(p, end, map, false); | |
1025 | } | |
1026 | ||
1027 | static int decode_new_primary_temp(void **p, void *end, | |
1028 | struct ceph_osdmap *map) | |
1029 | { | |
1030 | return __decode_primary_temp(p, end, map, true); | |
1031 | } | |
1032 | ||
2cfa34f2 ID |
1033 | u32 ceph_get_primary_affinity(struct ceph_osdmap *map, int osd) |
1034 | { | |
1035 | BUG_ON(osd >= map->max_osd); | |
1036 | ||
1037 | if (!map->osd_primary_affinity) | |
1038 | return CEPH_OSD_DEFAULT_PRIMARY_AFFINITY; | |
1039 | ||
1040 | return map->osd_primary_affinity[osd]; | |
1041 | } | |
1042 | ||
1043 | static int set_primary_affinity(struct ceph_osdmap *map, int osd, u32 aff) | |
1044 | { | |
1045 | BUG_ON(osd >= map->max_osd); | |
1046 | ||
1047 | if (!map->osd_primary_affinity) { | |
1048 | int i; | |
1049 | ||
1050 | map->osd_primary_affinity = kmalloc(map->max_osd*sizeof(u32), | |
1051 | GFP_NOFS); | |
1052 | if (!map->osd_primary_affinity) | |
1053 | return -ENOMEM; | |
1054 | ||
1055 | for (i = 0; i < map->max_osd; i++) | |
1056 | map->osd_primary_affinity[i] = | |
1057 | CEPH_OSD_DEFAULT_PRIMARY_AFFINITY; | |
1058 | } | |
1059 | ||
1060 | map->osd_primary_affinity[osd] = aff; | |
1061 | ||
1062 | return 0; | |
1063 | } | |
1064 | ||
63a6993f ID |
1065 | static int decode_primary_affinity(void **p, void *end, |
1066 | struct ceph_osdmap *map) | |
1067 | { | |
1068 | u32 len, i; | |
1069 | ||
1070 | ceph_decode_32_safe(p, end, len, e_inval); | |
1071 | if (len == 0) { | |
1072 | kfree(map->osd_primary_affinity); | |
1073 | map->osd_primary_affinity = NULL; | |
1074 | return 0; | |
1075 | } | |
1076 | if (len != map->max_osd) | |
1077 | goto e_inval; | |
1078 | ||
1079 | ceph_decode_need(p, end, map->max_osd*sizeof(u32), e_inval); | |
1080 | ||
1081 | for (i = 0; i < map->max_osd; i++) { | |
1082 | int ret; | |
1083 | ||
1084 | ret = set_primary_affinity(map, i, ceph_decode_32(p)); | |
1085 | if (ret) | |
1086 | return ret; | |
1087 | } | |
1088 | ||
1089 | return 0; | |
1090 | ||
1091 | e_inval: | |
1092 | return -EINVAL; | |
1093 | } | |
1094 | ||
1095 | static int decode_new_primary_affinity(void **p, void *end, | |
1096 | struct ceph_osdmap *map) | |
1097 | { | |
1098 | u32 n; | |
1099 | ||
1100 | ceph_decode_32_safe(p, end, n, e_inval); | |
1101 | while (n--) { | |
1102 | u32 osd, aff; | |
1103 | int ret; | |
1104 | ||
1105 | ceph_decode_32_safe(p, end, osd, e_inval); | |
1106 | ceph_decode_32_safe(p, end, aff, e_inval); | |
1107 | ||
1108 | ret = set_primary_affinity(map, osd, aff); | |
1109 | if (ret) | |
1110 | return ret; | |
f31da0f3 ID |
1111 | |
1112 | pr_info("osd%d primary-affinity 0x%x\n", osd, aff); | |
63a6993f ID |
1113 | } |
1114 | ||
1115 | return 0; | |
1116 | ||
1117 | e_inval: | |
1118 | return -EINVAL; | |
1119 | } | |
1120 | ||
f24e9980 SW |
1121 | /* |
1122 | * decode a full map. | |
1123 | */ | |
a2505d63 | 1124 | static int osdmap_decode(void **p, void *end, struct ceph_osdmap *map) |
f24e9980 | 1125 | { |
ec7af972 | 1126 | u8 struct_v; |
38a8d560 | 1127 | u32 epoch = 0; |
f24e9980 | 1128 | void *start = *p; |
3977058c ID |
1129 | u32 max; |
1130 | u32 len, i; | |
597b52f6 | 1131 | int err; |
f24e9980 | 1132 | |
a2505d63 | 1133 | dout("%s %p to %p len %d\n", __func__, *p, end, (int)(end - *p)); |
f24e9980 | 1134 | |
ec7af972 ID |
1135 | err = get_osdmap_client_data_v(p, end, "full", &struct_v); |
1136 | if (err) | |
1137 | goto bad; | |
f24e9980 | 1138 | |
53bbaba9 ID |
1139 | /* fsid, epoch, created, modified */ |
1140 | ceph_decode_need(p, end, sizeof(map->fsid) + sizeof(u32) + | |
1141 | sizeof(map->created) + sizeof(map->modified), e_inval); | |
f24e9980 | 1142 | ceph_decode_copy(p, &map->fsid, sizeof(map->fsid)); |
38a8d560 | 1143 | epoch = map->epoch = ceph_decode_32(p); |
f24e9980 SW |
1144 | ceph_decode_copy(p, &map->created, sizeof(map->created)); |
1145 | ceph_decode_copy(p, &map->modified, sizeof(map->modified)); | |
1146 | ||
433fbdd3 ID |
1147 | /* pools */ |
1148 | err = decode_pools(p, end, map); | |
1149 | if (err) | |
1150 | goto bad; | |
2844a76a | 1151 | |
0f70c7ee ID |
1152 | /* pool_name */ |
1153 | err = decode_pool_names(p, end, map); | |
597b52f6 | 1154 | if (err) |
4f6a7e5e | 1155 | goto bad; |
2844a76a | 1156 | |
597b52f6 | 1157 | ceph_decode_32_safe(p, end, map->pool_max, e_inval); |
f24e9980 | 1158 | |
597b52f6 | 1159 | ceph_decode_32_safe(p, end, map->flags, e_inval); |
f24e9980 | 1160 | |
3977058c ID |
1161 | /* max_osd */ |
1162 | ceph_decode_32_safe(p, end, max, e_inval); | |
f24e9980 SW |
1163 | |
1164 | /* (re)alloc osd arrays */ | |
1165 | err = osdmap_set_max_osd(map, max); | |
597b52f6 | 1166 | if (err) |
f24e9980 | 1167 | goto bad; |
f24e9980 | 1168 | |
2d88b2e0 | 1169 | /* osd_state, osd_weight, osd_addrs->client_addr */ |
f24e9980 SW |
1170 | ceph_decode_need(p, end, 3*sizeof(u32) + |
1171 | map->max_osd*(1 + sizeof(*map->osd_weight) + | |
597b52f6 ID |
1172 | sizeof(*map->osd_addr)), e_inval); |
1173 | ||
2d88b2e0 ID |
1174 | if (ceph_decode_32(p) != map->max_osd) |
1175 | goto e_inval; | |
1176 | ||
f24e9980 SW |
1177 | ceph_decode_copy(p, map->osd_state, map->max_osd); |
1178 | ||
2d88b2e0 ID |
1179 | if (ceph_decode_32(p) != map->max_osd) |
1180 | goto e_inval; | |
1181 | ||
f24e9980 | 1182 | for (i = 0; i < map->max_osd; i++) |
c89136ea | 1183 | map->osd_weight[i] = ceph_decode_32(p); |
f24e9980 | 1184 | |
2d88b2e0 ID |
1185 | if (ceph_decode_32(p) != map->max_osd) |
1186 | goto e_inval; | |
1187 | ||
f24e9980 | 1188 | ceph_decode_copy(p, map->osd_addr, map->max_osd*sizeof(*map->osd_addr)); |
63f2d211 SW |
1189 | for (i = 0; i < map->max_osd; i++) |
1190 | ceph_decode_addr(&map->osd_addr[i]); | |
f24e9980 SW |
1191 | |
1192 | /* pg_temp */ | |
10db634e ID |
1193 | err = decode_pg_temp(p, end, map); |
1194 | if (err) | |
1195 | goto bad; | |
f24e9980 | 1196 | |
d286de79 ID |
1197 | /* primary_temp */ |
1198 | if (struct_v >= 1) { | |
1199 | err = decode_primary_temp(p, end, map); | |
1200 | if (err) | |
1201 | goto bad; | |
1202 | } | |
1203 | ||
63a6993f ID |
1204 | /* primary_affinity */ |
1205 | if (struct_v >= 2) { | |
1206 | err = decode_primary_affinity(p, end, map); | |
1207 | if (err) | |
1208 | goto bad; | |
1209 | } else { | |
1210 | /* XXX can this happen? */ | |
1211 | kfree(map->osd_primary_affinity); | |
1212 | map->osd_primary_affinity = NULL; | |
1213 | } | |
1214 | ||
f24e9980 | 1215 | /* crush */ |
597b52f6 | 1216 | ceph_decode_32_safe(p, end, len, e_inval); |
9902e682 | 1217 | map->crush = crush_decode(*p, min(*p + len, end)); |
f24e9980 SW |
1218 | if (IS_ERR(map->crush)) { |
1219 | err = PTR_ERR(map->crush); | |
1220 | map->crush = NULL; | |
1221 | goto bad; | |
1222 | } | |
9902e682 | 1223 | *p += len; |
f24e9980 | 1224 | |
38a8d560 | 1225 | /* ignore the rest */ |
f24e9980 SW |
1226 | *p = end; |
1227 | ||
38a8d560 | 1228 | dout("full osdmap epoch %d max_osd %d\n", map->epoch, map->max_osd); |
a2505d63 | 1229 | return 0; |
f24e9980 | 1230 | |
597b52f6 ID |
1231 | e_inval: |
1232 | err = -EINVAL; | |
f24e9980 | 1233 | bad: |
38a8d560 ID |
1234 | pr_err("corrupt full osdmap (%d) epoch %d off %d (%p of %p-%p)\n", |
1235 | err, epoch, (int)(*p - start), *p, start, end); | |
1236 | print_hex_dump(KERN_DEBUG, "osdmap: ", | |
1237 | DUMP_PREFIX_OFFSET, 16, 1, | |
1238 | start, end - start, true); | |
a2505d63 ID |
1239 | return err; |
1240 | } | |
1241 | ||
1242 | /* | |
1243 | * Allocate and decode a full map. | |
1244 | */ | |
1245 | struct ceph_osdmap *ceph_osdmap_decode(void **p, void *end) | |
1246 | { | |
1247 | struct ceph_osdmap *map; | |
1248 | int ret; | |
1249 | ||
e5253a7b | 1250 | map = ceph_osdmap_alloc(); |
a2505d63 ID |
1251 | if (!map) |
1252 | return ERR_PTR(-ENOMEM); | |
1253 | ||
a2505d63 ID |
1254 | ret = osdmap_decode(p, end, map); |
1255 | if (ret) { | |
1256 | ceph_osdmap_destroy(map); | |
1257 | return ERR_PTR(ret); | |
1258 | } | |
1259 | ||
1260 | return map; | |
f24e9980 SW |
1261 | } |
1262 | ||
1263 | /* | |
1264 | * decode and apply an incremental map update. | |
1265 | */ | |
1266 | struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end, | |
0c0a8de1 | 1267 | struct ceph_osdmap *map) |
f24e9980 | 1268 | { |
f24e9980 SW |
1269 | struct crush_map *newcrush = NULL; |
1270 | struct ceph_fsid fsid; | |
1271 | u32 epoch = 0; | |
1272 | struct ceph_timespec modified; | |
4f6a7e5e SW |
1273 | s32 len; |
1274 | u64 pool; | |
1275 | __s64 new_pool_max; | |
1276 | __s32 new_flags, max; | |
f24e9980 | 1277 | void *start = *p; |
86f1742b | 1278 | int err; |
ec7af972 | 1279 | u8 struct_v; |
f24e9980 | 1280 | |
38a8d560 ID |
1281 | dout("%s %p to %p len %d\n", __func__, *p, end, (int)(end - *p)); |
1282 | ||
ec7af972 ID |
1283 | err = get_osdmap_client_data_v(p, end, "inc", &struct_v); |
1284 | if (err) | |
1285 | goto bad; | |
f24e9980 | 1286 | |
53bbaba9 ID |
1287 | /* fsid, epoch, modified, new_pool_max, new_flags */ |
1288 | ceph_decode_need(p, end, sizeof(fsid) + sizeof(u32) + sizeof(modified) + | |
1289 | sizeof(u64) + sizeof(u32), e_inval); | |
f24e9980 | 1290 | ceph_decode_copy(p, &fsid, sizeof(fsid)); |
c89136ea | 1291 | epoch = ceph_decode_32(p); |
f24e9980 SW |
1292 | BUG_ON(epoch != map->epoch+1); |
1293 | ceph_decode_copy(p, &modified, sizeof(modified)); | |
4f6a7e5e | 1294 | new_pool_max = ceph_decode_64(p); |
c89136ea | 1295 | new_flags = ceph_decode_32(p); |
f24e9980 SW |
1296 | |
1297 | /* full map? */ | |
86f1742b | 1298 | ceph_decode_32_safe(p, end, len, e_inval); |
f24e9980 SW |
1299 | if (len > 0) { |
1300 | dout("apply_incremental full map len %d, %p to %p\n", | |
1301 | len, *p, end); | |
a2505d63 | 1302 | return ceph_osdmap_decode(p, min(*p+len, end)); |
f24e9980 SW |
1303 | } |
1304 | ||
1305 | /* new crush? */ | |
86f1742b | 1306 | ceph_decode_32_safe(p, end, len, e_inval); |
f24e9980 | 1307 | if (len > 0) { |
f24e9980 | 1308 | newcrush = crush_decode(*p, min(*p+len, end)); |
86f1742b ID |
1309 | if (IS_ERR(newcrush)) { |
1310 | err = PTR_ERR(newcrush); | |
1311 | newcrush = NULL; | |
1312 | goto bad; | |
1313 | } | |
cebc5be6 | 1314 | *p += len; |
f24e9980 SW |
1315 | } |
1316 | ||
1317 | /* new flags? */ | |
1318 | if (new_flags >= 0) | |
1319 | map->flags = new_flags; | |
4fc51be8 SW |
1320 | if (new_pool_max >= 0) |
1321 | map->pool_max = new_pool_max; | |
f24e9980 | 1322 | |
f24e9980 | 1323 | /* new max? */ |
53bbaba9 | 1324 | ceph_decode_32_safe(p, end, max, e_inval); |
f24e9980 SW |
1325 | if (max >= 0) { |
1326 | err = osdmap_set_max_osd(map, max); | |
86f1742b | 1327 | if (err) |
f24e9980 SW |
1328 | goto bad; |
1329 | } | |
1330 | ||
1331 | map->epoch++; | |
31456665 | 1332 | map->modified = modified; |
f24e9980 SW |
1333 | if (newcrush) { |
1334 | if (map->crush) | |
1335 | crush_destroy(map->crush); | |
1336 | map->crush = newcrush; | |
1337 | newcrush = NULL; | |
1338 | } | |
1339 | ||
433fbdd3 ID |
1340 | /* new_pools */ |
1341 | err = decode_new_pools(p, end, map); | |
1342 | if (err) | |
1343 | goto bad; | |
9464d008 | 1344 | |
0f70c7ee ID |
1345 | /* new_pool_names */ |
1346 | err = decode_pool_names(p, end, map); | |
9464d008 ID |
1347 | if (err) |
1348 | goto bad; | |
f24e9980 | 1349 | |
4fc51be8 | 1350 | /* old_pool */ |
86f1742b | 1351 | ceph_decode_32_safe(p, end, len, e_inval); |
4fc51be8 SW |
1352 | while (len--) { |
1353 | struct ceph_pg_pool_info *pi; | |
1354 | ||
86f1742b | 1355 | ceph_decode_64_safe(p, end, pool, e_inval); |
4fc51be8 | 1356 | pi = __lookup_pg_pool(&map->pg_pools, pool); |
2844a76a SW |
1357 | if (pi) |
1358 | __remove_pg_pool(&map->pg_pools, pi); | |
4fc51be8 | 1359 | } |
f24e9980 SW |
1360 | |
1361 | /* new_up */ | |
86f1742b | 1362 | ceph_decode_32_safe(p, end, len, e_inval); |
f24e9980 SW |
1363 | while (len--) { |
1364 | u32 osd; | |
1365 | struct ceph_entity_addr addr; | |
86f1742b ID |
1366 | ceph_decode_32_safe(p, end, osd, e_inval); |
1367 | ceph_decode_copy_safe(p, end, &addr, sizeof(addr), e_inval); | |
63f2d211 | 1368 | ceph_decode_addr(&addr); |
f24e9980 SW |
1369 | pr_info("osd%d up\n", osd); |
1370 | BUG_ON(osd >= map->max_osd); | |
6dd74e44 | 1371 | map->osd_state[osd] |= CEPH_OSD_UP | CEPH_OSD_EXISTS; |
f24e9980 SW |
1372 | map->osd_addr[osd] = addr; |
1373 | } | |
1374 | ||
7662d8ff | 1375 | /* new_state */ |
86f1742b | 1376 | ceph_decode_32_safe(p, end, len, e_inval); |
f24e9980 SW |
1377 | while (len--) { |
1378 | u32 osd; | |
7662d8ff | 1379 | u8 xorstate; |
86f1742b | 1380 | ceph_decode_32_safe(p, end, osd, e_inval); |
7662d8ff | 1381 | xorstate = **(u8 **)p; |
f24e9980 | 1382 | (*p)++; /* clean flag */ |
7662d8ff SW |
1383 | if (xorstate == 0) |
1384 | xorstate = CEPH_OSD_UP; | |
1385 | if (xorstate & CEPH_OSD_UP) | |
1386 | pr_info("osd%d down\n", osd); | |
f24e9980 | 1387 | if (osd < map->max_osd) |
7662d8ff | 1388 | map->osd_state[osd] ^= xorstate; |
f24e9980 SW |
1389 | } |
1390 | ||
1391 | /* new_weight */ | |
86f1742b | 1392 | ceph_decode_32_safe(p, end, len, e_inval); |
f24e9980 SW |
1393 | while (len--) { |
1394 | u32 osd, off; | |
86f1742b | 1395 | ceph_decode_need(p, end, sizeof(u32)*2, e_inval); |
c89136ea SW |
1396 | osd = ceph_decode_32(p); |
1397 | off = ceph_decode_32(p); | |
f24e9980 SW |
1398 | pr_info("osd%d weight 0x%x %s\n", osd, off, |
1399 | off == CEPH_OSD_IN ? "(in)" : | |
1400 | (off == CEPH_OSD_OUT ? "(out)" : "")); | |
1401 | if (osd < map->max_osd) | |
1402 | map->osd_weight[osd] = off; | |
1403 | } | |
1404 | ||
1405 | /* new_pg_temp */ | |
10db634e ID |
1406 | err = decode_new_pg_temp(p, end, map); |
1407 | if (err) | |
1408 | goto bad; | |
f24e9980 | 1409 | |
d286de79 ID |
1410 | /* new_primary_temp */ |
1411 | if (struct_v >= 1) { | |
1412 | err = decode_new_primary_temp(p, end, map); | |
1413 | if (err) | |
1414 | goto bad; | |
1415 | } | |
1416 | ||
63a6993f ID |
1417 | /* new_primary_affinity */ |
1418 | if (struct_v >= 2) { | |
1419 | err = decode_new_primary_affinity(p, end, map); | |
1420 | if (err) | |
1421 | goto bad; | |
1422 | } | |
1423 | ||
f24e9980 SW |
1424 | /* ignore the rest */ |
1425 | *p = end; | |
38a8d560 ID |
1426 | |
1427 | dout("inc osdmap epoch %d max_osd %d\n", map->epoch, map->max_osd); | |
f24e9980 SW |
1428 | return map; |
1429 | ||
86f1742b ID |
1430 | e_inval: |
1431 | err = -EINVAL; | |
f24e9980 | 1432 | bad: |
38a8d560 ID |
1433 | pr_err("corrupt inc osdmap (%d) epoch %d off %d (%p of %p-%p)\n", |
1434 | err, epoch, (int)(*p - start), *p, start, end); | |
9ec7cab1 SW |
1435 | print_hex_dump(KERN_DEBUG, "osdmap: ", |
1436 | DUMP_PREFIX_OFFSET, 16, 1, | |
1437 | start, end - start, true); | |
f24e9980 SW |
1438 | if (newcrush) |
1439 | crush_destroy(newcrush); | |
1440 | return ERR_PTR(err); | |
1441 | } | |
1442 | ||
d30291b9 ID |
1443 | void ceph_oid_copy(struct ceph_object_id *dest, |
1444 | const struct ceph_object_id *src) | |
1445 | { | |
1446 | WARN_ON(!ceph_oid_empty(dest)); | |
1447 | ||
1448 | if (src->name != src->inline_name) { | |
1449 | /* very rare, see ceph_object_id definition */ | |
1450 | dest->name = kmalloc(src->name_len + 1, | |
1451 | GFP_NOIO | __GFP_NOFAIL); | |
1452 | } | |
1453 | ||
1454 | memcpy(dest->name, src->name, src->name_len + 1); | |
1455 | dest->name_len = src->name_len; | |
1456 | } | |
1457 | EXPORT_SYMBOL(ceph_oid_copy); | |
1458 | ||
1459 | static __printf(2, 0) | |
1460 | int oid_printf_vargs(struct ceph_object_id *oid, const char *fmt, va_list ap) | |
1461 | { | |
1462 | int len; | |
1463 | ||
1464 | WARN_ON(!ceph_oid_empty(oid)); | |
1465 | ||
1466 | len = vsnprintf(oid->inline_name, sizeof(oid->inline_name), fmt, ap); | |
1467 | if (len >= sizeof(oid->inline_name)) | |
1468 | return len; | |
1469 | ||
1470 | oid->name_len = len; | |
1471 | return 0; | |
1472 | } | |
1473 | ||
1474 | /* | |
1475 | * If oid doesn't fit into inline buffer, BUG. | |
1476 | */ | |
1477 | void ceph_oid_printf(struct ceph_object_id *oid, const char *fmt, ...) | |
1478 | { | |
1479 | va_list ap; | |
1480 | ||
1481 | va_start(ap, fmt); | |
1482 | BUG_ON(oid_printf_vargs(oid, fmt, ap)); | |
1483 | va_end(ap); | |
1484 | } | |
1485 | EXPORT_SYMBOL(ceph_oid_printf); | |
1486 | ||
1487 | static __printf(3, 0) | |
1488 | int oid_aprintf_vargs(struct ceph_object_id *oid, gfp_t gfp, | |
1489 | const char *fmt, va_list ap) | |
1490 | { | |
1491 | va_list aq; | |
1492 | int len; | |
1493 | ||
1494 | va_copy(aq, ap); | |
1495 | len = oid_printf_vargs(oid, fmt, aq); | |
1496 | va_end(aq); | |
1497 | ||
1498 | if (len) { | |
1499 | char *external_name; | |
1500 | ||
1501 | external_name = kmalloc(len + 1, gfp); | |
1502 | if (!external_name) | |
1503 | return -ENOMEM; | |
f24e9980 | 1504 | |
d30291b9 ID |
1505 | oid->name = external_name; |
1506 | WARN_ON(vsnprintf(oid->name, len + 1, fmt, ap) != len); | |
1507 | oid->name_len = len; | |
1508 | } | |
f24e9980 | 1509 | |
d30291b9 ID |
1510 | return 0; |
1511 | } | |
1512 | ||
1513 | /* | |
1514 | * If oid doesn't fit into inline buffer, allocate. | |
1515 | */ | |
1516 | int ceph_oid_aprintf(struct ceph_object_id *oid, gfp_t gfp, | |
1517 | const char *fmt, ...) | |
1518 | { | |
1519 | va_list ap; | |
1520 | int ret; | |
1521 | ||
1522 | va_start(ap, fmt); | |
1523 | ret = oid_aprintf_vargs(oid, gfp, fmt, ap); | |
1524 | va_end(ap); | |
1525 | ||
1526 | return ret; | |
1527 | } | |
1528 | EXPORT_SYMBOL(ceph_oid_aprintf); | |
1529 | ||
1530 | void ceph_oid_destroy(struct ceph_object_id *oid) | |
1531 | { | |
1532 | if (oid->name != oid->inline_name) | |
1533 | kfree(oid->name); | |
1534 | } | |
1535 | EXPORT_SYMBOL(ceph_oid_destroy); | |
f24e9980 | 1536 | |
63244fa1 ID |
1537 | /* |
1538 | * osds only | |
1539 | */ | |
1540 | static bool __osds_equal(const struct ceph_osds *lhs, | |
1541 | const struct ceph_osds *rhs) | |
1542 | { | |
1543 | if (lhs->size == rhs->size && | |
1544 | !memcmp(lhs->osds, rhs->osds, rhs->size * sizeof(rhs->osds[0]))) | |
1545 | return true; | |
1546 | ||
1547 | return false; | |
1548 | } | |
1549 | ||
1550 | /* | |
1551 | * osds + primary | |
1552 | */ | |
1553 | static bool osds_equal(const struct ceph_osds *lhs, | |
1554 | const struct ceph_osds *rhs) | |
1555 | { | |
1556 | if (__osds_equal(lhs, rhs) && | |
1557 | lhs->primary == rhs->primary) | |
1558 | return true; | |
1559 | ||
1560 | return false; | |
1561 | } | |
1562 | ||
6f3bfd45 ID |
1563 | static bool osds_valid(const struct ceph_osds *set) |
1564 | { | |
1565 | /* non-empty set */ | |
1566 | if (set->size > 0 && set->primary >= 0) | |
1567 | return true; | |
1568 | ||
1569 | /* empty can_shift_osds set */ | |
1570 | if (!set->size && set->primary == -1) | |
1571 | return true; | |
1572 | ||
1573 | /* empty !can_shift_osds set - all NONE */ | |
1574 | if (set->size > 0 && set->primary == -1) { | |
1575 | int i; | |
1576 | ||
1577 | for (i = 0; i < set->size; i++) { | |
1578 | if (set->osds[i] != CRUSH_ITEM_NONE) | |
1579 | break; | |
1580 | } | |
1581 | if (i == set->size) | |
1582 | return true; | |
1583 | } | |
1584 | ||
1585 | return false; | |
1586 | } | |
1587 | ||
1588 | void ceph_osds_copy(struct ceph_osds *dest, const struct ceph_osds *src) | |
1589 | { | |
1590 | memcpy(dest->osds, src->osds, src->size * sizeof(src->osds[0])); | |
1591 | dest->size = src->size; | |
1592 | dest->primary = src->primary; | |
1593 | } | |
1594 | ||
63244fa1 ID |
1595 | static bool is_split(const struct ceph_pg *pgid, |
1596 | u32 old_pg_num, | |
1597 | u32 new_pg_num) | |
1598 | { | |
1599 | int old_bits = calc_bits_of(old_pg_num); | |
1600 | int old_mask = (1 << old_bits) - 1; | |
1601 | int n; | |
1602 | ||
1603 | WARN_ON(pgid->seed >= old_pg_num); | |
1604 | if (new_pg_num <= old_pg_num) | |
1605 | return false; | |
1606 | ||
1607 | for (n = 1; ; n++) { | |
1608 | int next_bit = n << (old_bits - 1); | |
1609 | u32 s = next_bit | pgid->seed; | |
1610 | ||
1611 | if (s < old_pg_num || s == pgid->seed) | |
1612 | continue; | |
1613 | if (s >= new_pg_num) | |
1614 | break; | |
1615 | ||
1616 | s = ceph_stable_mod(s, old_pg_num, old_mask); | |
1617 | if (s == pgid->seed) | |
1618 | return true; | |
1619 | } | |
1620 | ||
1621 | return false; | |
1622 | } | |
1623 | ||
1624 | bool ceph_is_new_interval(const struct ceph_osds *old_acting, | |
1625 | const struct ceph_osds *new_acting, | |
1626 | const struct ceph_osds *old_up, | |
1627 | const struct ceph_osds *new_up, | |
1628 | int old_size, | |
1629 | int new_size, | |
1630 | int old_min_size, | |
1631 | int new_min_size, | |
1632 | u32 old_pg_num, | |
1633 | u32 new_pg_num, | |
1634 | bool old_sort_bitwise, | |
1635 | bool new_sort_bitwise, | |
1636 | const struct ceph_pg *pgid) | |
1637 | { | |
1638 | return !osds_equal(old_acting, new_acting) || | |
1639 | !osds_equal(old_up, new_up) || | |
1640 | old_size != new_size || | |
1641 | old_min_size != new_min_size || | |
1642 | is_split(pgid, old_pg_num, new_pg_num) || | |
1643 | old_sort_bitwise != new_sort_bitwise; | |
1644 | } | |
1645 | ||
1646 | static int calc_pg_rank(int osd, const struct ceph_osds *acting) | |
1647 | { | |
1648 | int i; | |
1649 | ||
1650 | for (i = 0; i < acting->size; i++) { | |
1651 | if (acting->osds[i] == osd) | |
1652 | return i; | |
1653 | } | |
1654 | ||
1655 | return -1; | |
1656 | } | |
1657 | ||
1658 | static bool primary_changed(const struct ceph_osds *old_acting, | |
1659 | const struct ceph_osds *new_acting) | |
1660 | { | |
1661 | if (!old_acting->size && !new_acting->size) | |
1662 | return false; /* both still empty */ | |
1663 | ||
1664 | if (!old_acting->size ^ !new_acting->size) | |
1665 | return true; /* was empty, now not, or vice versa */ | |
1666 | ||
1667 | if (old_acting->primary != new_acting->primary) | |
1668 | return true; /* primary changed */ | |
1669 | ||
1670 | if (calc_pg_rank(old_acting->primary, old_acting) != | |
1671 | calc_pg_rank(new_acting->primary, new_acting)) | |
1672 | return true; | |
1673 | ||
1674 | return false; /* same primary (tho replicas may have changed) */ | |
1675 | } | |
1676 | ||
1677 | bool ceph_osds_changed(const struct ceph_osds *old_acting, | |
1678 | const struct ceph_osds *new_acting, | |
1679 | bool any_change) | |
1680 | { | |
1681 | if (primary_changed(old_acting, new_acting)) | |
1682 | return true; | |
1683 | ||
1684 | if (any_change && !__osds_equal(old_acting, new_acting)) | |
1685 | return true; | |
1686 | ||
1687 | return false; | |
1688 | } | |
1689 | ||
f24e9980 SW |
1690 | /* |
1691 | * calculate file layout from given offset, length. | |
1692 | * fill in correct oid, logical length, and object extent | |
1693 | * offset, length. | |
1694 | * | |
1695 | * for now, we write only a single su, until we can | |
1696 | * pass a stride back to the caller. | |
1697 | */ | |
d63b77f4 | 1698 | int ceph_calc_file_object_mapping(struct ceph_file_layout *layout, |
e8afad65 | 1699 | u64 off, u64 len, |
645a1025 | 1700 | u64 *ono, |
f24e9980 SW |
1701 | u64 *oxoff, u64 *oxlen) |
1702 | { | |
1703 | u32 osize = le32_to_cpu(layout->fl_object_size); | |
1704 | u32 su = le32_to_cpu(layout->fl_stripe_unit); | |
1705 | u32 sc = le32_to_cpu(layout->fl_stripe_count); | |
1706 | u32 bl, stripeno, stripepos, objsetno; | |
1707 | u32 su_per_object; | |
ff1d1f71 | 1708 | u64 t, su_offset; |
f24e9980 | 1709 | |
e8afad65 | 1710 | dout("mapping %llu~%llu osize %u fl_su %u\n", off, len, |
f24e9980 | 1711 | osize, su); |
d63b77f4 SW |
1712 | if (su == 0 || sc == 0) |
1713 | goto invalid; | |
35e054a6 | 1714 | su_per_object = osize / su; |
d63b77f4 SW |
1715 | if (su_per_object == 0) |
1716 | goto invalid; | |
f24e9980 SW |
1717 | dout("osize %u / su %u = su_per_object %u\n", osize, su, |
1718 | su_per_object); | |
1719 | ||
d63b77f4 SW |
1720 | if ((su & ~PAGE_MASK) != 0) |
1721 | goto invalid; | |
1722 | ||
f24e9980 SW |
1723 | /* bl = *off / su; */ |
1724 | t = off; | |
1725 | do_div(t, su); | |
1726 | bl = t; | |
1727 | dout("off %llu / su %u = bl %u\n", off, su, bl); | |
1728 | ||
1729 | stripeno = bl / sc; | |
1730 | stripepos = bl % sc; | |
1731 | objsetno = stripeno / su_per_object; | |
1732 | ||
645a1025 | 1733 | *ono = objsetno * sc + stripepos; |
95c96174 | 1734 | dout("objset %u * sc %u = ono %u\n", objsetno, sc, (unsigned int)*ono); |
645a1025 SW |
1735 | |
1736 | /* *oxoff = *off % layout->fl_stripe_unit; # offset in su */ | |
f24e9980 | 1737 | t = off; |
ff1d1f71 NW |
1738 | su_offset = do_div(t, su); |
1739 | *oxoff = su_offset + (stripeno % su_per_object) * su; | |
1740 | ||
1741 | /* | |
1742 | * Calculate the length of the extent being written to the selected | |
e8afad65 | 1743 | * object. This is the minimum of the full length requested (len) or |
ff1d1f71 NW |
1744 | * the remainder of the current stripe being written to. |
1745 | */ | |
e8afad65 | 1746 | *oxlen = min_t(u64, len, su - su_offset); |
f24e9980 SW |
1747 | |
1748 | dout(" obj extent %llu~%llu\n", *oxoff, *oxlen); | |
d63b77f4 SW |
1749 | return 0; |
1750 | ||
1751 | invalid: | |
1752 | dout(" invalid layout\n"); | |
1753 | *ono = 0; | |
1754 | *oxoff = 0; | |
1755 | *oxlen = 0; | |
1756 | return -EINVAL; | |
f24e9980 | 1757 | } |
3d14c5d2 | 1758 | EXPORT_SYMBOL(ceph_calc_file_object_mapping); |
f24e9980 SW |
1759 | |
1760 | /* | |
d9591f5e ID |
1761 | * Map an object into a PG. |
1762 | * | |
1763 | * Should only be called with target_oid and target_oloc (as opposed to | |
1764 | * base_oid and base_oloc), since tiering isn't taken into account. | |
f24e9980 | 1765 | */ |
d9591f5e ID |
1766 | int ceph_object_locator_to_pg(struct ceph_osdmap *osdmap, |
1767 | struct ceph_object_id *oid, | |
1768 | struct ceph_object_locator *oloc, | |
1769 | struct ceph_pg *raw_pgid) | |
f24e9980 | 1770 | { |
7c13cb64 | 1771 | struct ceph_pg_pool_info *pi; |
f24e9980 | 1772 | |
d9591f5e | 1773 | pi = ceph_pg_pool_by_id(osdmap, oloc->pool); |
7c13cb64 | 1774 | if (!pi) |
d9591f5e | 1775 | return -ENOENT; |
f24e9980 | 1776 | |
d9591f5e ID |
1777 | raw_pgid->pool = oloc->pool; |
1778 | raw_pgid->seed = ceph_str_hash(pi->object_hash, oid->name, | |
1779 | oid->name_len); | |
7c13cb64 | 1780 | |
4a3262b1 ID |
1781 | dout("%s %s -> raw_pgid %llu.%x\n", __func__, oid->name, |
1782 | raw_pgid->pool, raw_pgid->seed); | |
f24e9980 SW |
1783 | return 0; |
1784 | } | |
d9591f5e | 1785 | EXPORT_SYMBOL(ceph_object_locator_to_pg); |
f24e9980 | 1786 | |
6f3bfd45 ID |
1787 | /* |
1788 | * Map a raw PG (full precision ps) into an actual PG. | |
1789 | */ | |
1790 | static void raw_pg_to_pg(struct ceph_pg_pool_info *pi, | |
1791 | const struct ceph_pg *raw_pgid, | |
1792 | struct ceph_pg *pgid) | |
1793 | { | |
1794 | pgid->pool = raw_pgid->pool; | |
1795 | pgid->seed = ceph_stable_mod(raw_pgid->seed, pi->pg_num, | |
1796 | pi->pg_num_mask); | |
1797 | } | |
1798 | ||
1799 | /* | |
1800 | * Map a raw PG (full precision ps) into a placement ps (placement | |
1801 | * seed). Include pool id in that value so that different pools don't | |
1802 | * use the same seeds. | |
1803 | */ | |
1804 | static u32 raw_pg_to_pps(struct ceph_pg_pool_info *pi, | |
1805 | const struct ceph_pg *raw_pgid) | |
1806 | { | |
1807 | if (pi->flags & CEPH_POOL_FLAG_HASHPSPOOL) { | |
1808 | /* hash pool id and seed so that pool PGs do not overlap */ | |
1809 | return crush_hash32_2(CRUSH_HASH_RJENKINS1, | |
1810 | ceph_stable_mod(raw_pgid->seed, | |
1811 | pi->pgp_num, | |
1812 | pi->pgp_num_mask), | |
1813 | raw_pgid->pool); | |
1814 | } else { | |
1815 | /* | |
1816 | * legacy behavior: add ps and pool together. this is | |
1817 | * not a great approach because the PGs from each pool | |
1818 | * will overlap on top of each other: 0.5 == 1.4 == | |
1819 | * 2.3 == ... | |
1820 | */ | |
1821 | return ceph_stable_mod(raw_pgid->seed, pi->pgp_num, | |
1822 | pi->pgp_num_mask) + | |
1823 | (unsigned)raw_pgid->pool; | |
1824 | } | |
1825 | } | |
1826 | ||
9d521470 ID |
1827 | static int do_crush(struct ceph_osdmap *map, int ruleno, int x, |
1828 | int *result, int result_max, | |
1829 | const __u32 *weight, int weight_max) | |
e8ef19c4 | 1830 | { |
9d521470 ID |
1831 | int r; |
1832 | ||
1833 | BUG_ON(result_max > CEPH_PG_MAX_SIZE); | |
1834 | ||
1835 | mutex_lock(&map->crush_scratch_mutex); | |
1836 | r = crush_do_rule(map->crush, ruleno, x, result, result_max, | |
1837 | weight, weight_max, map->crush_scratch_ary); | |
1838 | mutex_unlock(&map->crush_scratch_mutex); | |
e8ef19c4 | 1839 | |
9d521470 | 1840 | return r; |
e8ef19c4 ID |
1841 | } |
1842 | ||
2bd93d4d | 1843 | /* |
6f3bfd45 ID |
1844 | * Calculate raw set (CRUSH output) for given PG. The result may |
1845 | * contain nonexistent OSDs. ->primary is undefined for a raw set. | |
2bd93d4d | 1846 | * |
6f3bfd45 | 1847 | * Placement seed (CRUSH input) is returned through @ppps. |
2bd93d4d | 1848 | */ |
6f3bfd45 ID |
1849 | static void pg_to_raw_osds(struct ceph_osdmap *osdmap, |
1850 | struct ceph_pg_pool_info *pi, | |
1851 | const struct ceph_pg *raw_pgid, | |
1852 | struct ceph_osds *raw, | |
1853 | u32 *ppps) | |
2bd93d4d | 1854 | { |
6f3bfd45 | 1855 | u32 pps = raw_pg_to_pps(pi, raw_pgid); |
2bd93d4d ID |
1856 | int ruleno; |
1857 | int len; | |
1858 | ||
6f3bfd45 ID |
1859 | ceph_osds_init(raw); |
1860 | if (ppps) | |
1861 | *ppps = pps; | |
1862 | ||
1863 | ruleno = crush_find_rule(osdmap->crush, pi->crush_ruleset, pi->type, | |
1864 | pi->size); | |
2bd93d4d ID |
1865 | if (ruleno < 0) { |
1866 | pr_err("no crush rule: pool %lld ruleset %d type %d size %d\n", | |
6f3bfd45 ID |
1867 | pi->id, pi->crush_ruleset, pi->type, pi->size); |
1868 | return; | |
2bd93d4d ID |
1869 | } |
1870 | ||
6f3bfd45 ID |
1871 | len = do_crush(osdmap, ruleno, pps, raw->osds, |
1872 | min_t(int, pi->size, ARRAY_SIZE(raw->osds)), | |
2bd93d4d ID |
1873 | osdmap->osd_weight, osdmap->max_osd); |
1874 | if (len < 0) { | |
1875 | pr_err("error %d from crush rule %d: pool %lld ruleset %d type %d size %d\n", | |
6f3bfd45 ID |
1876 | len, ruleno, pi->id, pi->crush_ruleset, pi->type, |
1877 | pi->size); | |
1878 | return; | |
2bd93d4d ID |
1879 | } |
1880 | ||
6f3bfd45 | 1881 | raw->size = len; |
2bd93d4d ID |
1882 | } |
1883 | ||
1884 | /* | |
6f3bfd45 ID |
1885 | * Given raw set, calculate up set and up primary. By definition of an |
1886 | * up set, the result won't contain nonexistent or down OSDs. | |
2bd93d4d | 1887 | * |
6f3bfd45 ID |
1888 | * This is done in-place - on return @set is the up set. If it's |
1889 | * empty, ->primary will remain undefined. | |
2bd93d4d | 1890 | */ |
6f3bfd45 ID |
1891 | static void raw_to_up_osds(struct ceph_osdmap *osdmap, |
1892 | struct ceph_pg_pool_info *pi, | |
1893 | struct ceph_osds *set) | |
2bd93d4d | 1894 | { |
2bd93d4d ID |
1895 | int i; |
1896 | ||
6f3bfd45 ID |
1897 | /* ->primary is undefined for a raw set */ |
1898 | BUG_ON(set->primary != -1); | |
1899 | ||
1900 | if (ceph_can_shift_osds(pi)) { | |
2bd93d4d ID |
1901 | int removed = 0; |
1902 | ||
6f3bfd45 ID |
1903 | /* shift left */ |
1904 | for (i = 0; i < set->size; i++) { | |
1905 | if (ceph_osd_is_down(osdmap, set->osds[i])) { | |
2bd93d4d ID |
1906 | removed++; |
1907 | continue; | |
1908 | } | |
1909 | if (removed) | |
6f3bfd45 | 1910 | set->osds[i - removed] = set->osds[i]; |
2bd93d4d | 1911 | } |
6f3bfd45 ID |
1912 | set->size -= removed; |
1913 | if (set->size > 0) | |
1914 | set->primary = set->osds[0]; | |
2bd93d4d | 1915 | } else { |
6f3bfd45 ID |
1916 | /* set down/dne devices to NONE */ |
1917 | for (i = set->size - 1; i >= 0; i--) { | |
1918 | if (ceph_osd_is_down(osdmap, set->osds[i])) | |
1919 | set->osds[i] = CRUSH_ITEM_NONE; | |
2bd93d4d | 1920 | else |
6f3bfd45 | 1921 | set->primary = set->osds[i]; |
2bd93d4d ID |
1922 | } |
1923 | } | |
2bd93d4d ID |
1924 | } |
1925 | ||
6f3bfd45 ID |
1926 | static void apply_primary_affinity(struct ceph_osdmap *osdmap, |
1927 | struct ceph_pg_pool_info *pi, | |
1928 | u32 pps, | |
1929 | struct ceph_osds *up) | |
47ec1f3c ID |
1930 | { |
1931 | int i; | |
1932 | int pos = -1; | |
1933 | ||
1934 | /* | |
1935 | * Do we have any non-default primary_affinity values for these | |
1936 | * osds? | |
1937 | */ | |
1938 | if (!osdmap->osd_primary_affinity) | |
1939 | return; | |
1940 | ||
6f3bfd45 ID |
1941 | for (i = 0; i < up->size; i++) { |
1942 | int osd = up->osds[i]; | |
92b2e751 ID |
1943 | |
1944 | if (osd != CRUSH_ITEM_NONE && | |
1945 | osdmap->osd_primary_affinity[osd] != | |
47ec1f3c ID |
1946 | CEPH_OSD_DEFAULT_PRIMARY_AFFINITY) { |
1947 | break; | |
1948 | } | |
1949 | } | |
6f3bfd45 | 1950 | if (i == up->size) |
47ec1f3c ID |
1951 | return; |
1952 | ||
1953 | /* | |
1954 | * Pick the primary. Feed both the seed (for the pg) and the | |
1955 | * osd into the hash/rng so that a proportional fraction of an | |
1956 | * osd's pgs get rejected as primary. | |
1957 | */ | |
6f3bfd45 ID |
1958 | for (i = 0; i < up->size; i++) { |
1959 | int osd = up->osds[i]; | |
47ec1f3c ID |
1960 | u32 aff; |
1961 | ||
47ec1f3c ID |
1962 | if (osd == CRUSH_ITEM_NONE) |
1963 | continue; | |
1964 | ||
1965 | aff = osdmap->osd_primary_affinity[osd]; | |
1966 | if (aff < CEPH_OSD_MAX_PRIMARY_AFFINITY && | |
1967 | (crush_hash32_2(CRUSH_HASH_RJENKINS1, | |
1968 | pps, osd) >> 16) >= aff) { | |
1969 | /* | |
1970 | * We chose not to use this primary. Note it | |
1971 | * anyway as a fallback in case we don't pick | |
1972 | * anyone else, but keep looking. | |
1973 | */ | |
1974 | if (pos < 0) | |
1975 | pos = i; | |
1976 | } else { | |
1977 | pos = i; | |
1978 | break; | |
1979 | } | |
1980 | } | |
1981 | if (pos < 0) | |
1982 | return; | |
1983 | ||
6f3bfd45 | 1984 | up->primary = up->osds[pos]; |
47ec1f3c | 1985 | |
6f3bfd45 | 1986 | if (ceph_can_shift_osds(pi) && pos > 0) { |
47ec1f3c ID |
1987 | /* move the new primary to the front */ |
1988 | for (i = pos; i > 0; i--) | |
6f3bfd45 ID |
1989 | up->osds[i] = up->osds[i - 1]; |
1990 | up->osds[0] = up->primary; | |
47ec1f3c ID |
1991 | } |
1992 | } | |
1993 | ||
45966c34 | 1994 | /* |
6f3bfd45 | 1995 | * Get pg_temp and primary_temp mappings for given PG. |
45966c34 | 1996 | * |
6f3bfd45 ID |
1997 | * Note that a PG may have none, only pg_temp, only primary_temp or |
1998 | * both pg_temp and primary_temp mappings. This means @temp isn't | |
1999 | * always a valid OSD set on return: in the "only primary_temp" case, | |
2000 | * @temp will have its ->primary >= 0 but ->size == 0. | |
45966c34 | 2001 | */ |
6f3bfd45 ID |
2002 | static void get_temp_osds(struct ceph_osdmap *osdmap, |
2003 | struct ceph_pg_pool_info *pi, | |
2004 | const struct ceph_pg *raw_pgid, | |
2005 | struct ceph_osds *temp) | |
45966c34 | 2006 | { |
6f3bfd45 | 2007 | struct ceph_pg pgid; |
45966c34 | 2008 | struct ceph_pg_mapping *pg; |
45966c34 ID |
2009 | int i; |
2010 | ||
6f3bfd45 ID |
2011 | raw_pg_to_pg(pi, raw_pgid, &pgid); |
2012 | ceph_osds_init(temp); | |
45966c34 ID |
2013 | |
2014 | /* pg_temp? */ | |
2015 | pg = __lookup_pg_mapping(&osdmap->pg_temp, pgid); | |
2016 | if (pg) { | |
45966c34 ID |
2017 | for (i = 0; i < pg->pg_temp.len; i++) { |
2018 | if (ceph_osd_is_down(osdmap, pg->pg_temp.osds[i])) { | |
6f3bfd45 | 2019 | if (ceph_can_shift_osds(pi)) |
45966c34 | 2020 | continue; |
6f3bfd45 ID |
2021 | |
2022 | temp->osds[temp->size++] = CRUSH_ITEM_NONE; | |
45966c34 | 2023 | } else { |
6f3bfd45 | 2024 | temp->osds[temp->size++] = pg->pg_temp.osds[i]; |
45966c34 ID |
2025 | } |
2026 | } | |
2027 | ||
2028 | /* apply pg_temp's primary */ | |
6f3bfd45 ID |
2029 | for (i = 0; i < temp->size; i++) { |
2030 | if (temp->osds[i] != CRUSH_ITEM_NONE) { | |
2031 | temp->primary = temp->osds[i]; | |
45966c34 ID |
2032 | break; |
2033 | } | |
2034 | } | |
45966c34 ID |
2035 | } |
2036 | ||
5e8d4d36 ID |
2037 | /* primary_temp? */ |
2038 | pg = __lookup_pg_mapping(&osdmap->primary_temp, pgid); | |
2039 | if (pg) | |
6f3bfd45 | 2040 | temp->primary = pg->primary_temp.osd; |
45966c34 ID |
2041 | } |
2042 | ||
d85b7056 | 2043 | /* |
6f3bfd45 | 2044 | * Map a PG to its acting set as well as its up set. |
ac972230 | 2045 | * |
6f3bfd45 ID |
2046 | * Acting set is used for data mapping purposes, while up set can be |
2047 | * recorded for detecting interval changes and deciding whether to | |
2048 | * resend a request. | |
d85b7056 | 2049 | */ |
6f3bfd45 ID |
2050 | void ceph_pg_to_up_acting_osds(struct ceph_osdmap *osdmap, |
2051 | const struct ceph_pg *raw_pgid, | |
2052 | struct ceph_osds *up, | |
2053 | struct ceph_osds *acting) | |
d85b7056 | 2054 | { |
6f3bfd45 | 2055 | struct ceph_pg_pool_info *pi; |
ac972230 | 2056 | u32 pps; |
d85b7056 | 2057 | |
6f3bfd45 ID |
2058 | pi = ceph_pg_pool_by_id(osdmap, raw_pgid->pool); |
2059 | if (!pi) { | |
2060 | ceph_osds_init(up); | |
2061 | ceph_osds_init(acting); | |
2062 | goto out; | |
8008ab10 | 2063 | } |
d85b7056 | 2064 | |
6f3bfd45 ID |
2065 | pg_to_raw_osds(osdmap, pi, raw_pgid, up, &pps); |
2066 | raw_to_up_osds(osdmap, pi, up); | |
2067 | apply_primary_affinity(osdmap, pi, pps, up); | |
2068 | get_temp_osds(osdmap, pi, raw_pgid, acting); | |
2069 | if (!acting->size) { | |
2070 | memcpy(acting->osds, up->osds, up->size * sizeof(up->osds[0])); | |
2071 | acting->size = up->size; | |
2072 | if (acting->primary == -1) | |
2073 | acting->primary = up->primary; | |
8008ab10 | 2074 | } |
6f3bfd45 ID |
2075 | out: |
2076 | WARN_ON(!osds_valid(up) || !osds_valid(acting)); | |
d85b7056 SW |
2077 | } |
2078 | ||
f24e9980 | 2079 | /* |
f81f1633 | 2080 | * Return acting primary for given PG, or -1 if none. |
f24e9980 | 2081 | */ |
f81f1633 ID |
2082 | int ceph_pg_to_acting_primary(struct ceph_osdmap *osdmap, |
2083 | const struct ceph_pg *raw_pgid) | |
f24e9980 | 2084 | { |
6f3bfd45 | 2085 | struct ceph_osds up, acting; |
f24e9980 | 2086 | |
f81f1633 | 2087 | ceph_pg_to_up_acting_osds(osdmap, raw_pgid, &up, &acting); |
6f3bfd45 | 2088 | return acting.primary; |
f24e9980 | 2089 | } |
f81f1633 | 2090 | EXPORT_SYMBOL(ceph_pg_to_acting_primary); |