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