13d14c5d2SYehuda Sadeh 23d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 33d14c5d2SYehuda Sadeh 43d14c5d2SYehuda Sadeh #include <linux/module.h> 53d14c5d2SYehuda Sadeh #include <linux/slab.h> 63d14c5d2SYehuda Sadeh #include <asm/div64.h> 73d14c5d2SYehuda Sadeh 83d14c5d2SYehuda Sadeh #include <linux/ceph/libceph.h> 93d14c5d2SYehuda Sadeh #include <linux/ceph/osdmap.h> 103d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 113d14c5d2SYehuda Sadeh #include <linux/crush/hash.h> 123d14c5d2SYehuda Sadeh #include <linux/crush/mapper.h> 133d14c5d2SYehuda Sadeh 143d14c5d2SYehuda Sadeh char *ceph_osdmap_state_str(char *str, int len, int state) 153d14c5d2SYehuda Sadeh { 163d14c5d2SYehuda Sadeh if (!len) 171ec3911dSCong Ding return str; 183d14c5d2SYehuda Sadeh 191ec3911dSCong Ding if ((state & CEPH_OSD_EXISTS) && (state & CEPH_OSD_UP)) 201ec3911dSCong Ding snprintf(str, len, "exists, up"); 211ec3911dSCong Ding else if (state & CEPH_OSD_EXISTS) 223d14c5d2SYehuda Sadeh snprintf(str, len, "exists"); 231ec3911dSCong Ding else if (state & CEPH_OSD_UP) 241ec3911dSCong Ding snprintf(str, len, "up"); 251ec3911dSCong Ding else 263d14c5d2SYehuda Sadeh snprintf(str, len, "doesn't exist"); 271ec3911dSCong Ding 283d14c5d2SYehuda Sadeh return str; 293d14c5d2SYehuda Sadeh } 303d14c5d2SYehuda Sadeh 313d14c5d2SYehuda Sadeh /* maps */ 323d14c5d2SYehuda Sadeh 3395c96174SEric Dumazet static int calc_bits_of(unsigned int t) 343d14c5d2SYehuda Sadeh { 353d14c5d2SYehuda Sadeh int b = 0; 363d14c5d2SYehuda Sadeh while (t) { 373d14c5d2SYehuda Sadeh t = t >> 1; 383d14c5d2SYehuda Sadeh b++; 393d14c5d2SYehuda Sadeh } 403d14c5d2SYehuda Sadeh return b; 413d14c5d2SYehuda Sadeh } 423d14c5d2SYehuda Sadeh 433d14c5d2SYehuda Sadeh /* 443d14c5d2SYehuda Sadeh * the foo_mask is the smallest value 2^n-1 that is >= foo. 453d14c5d2SYehuda Sadeh */ 463d14c5d2SYehuda Sadeh static void calc_pg_masks(struct ceph_pg_pool_info *pi) 473d14c5d2SYehuda Sadeh { 484f6a7e5eSSage Weil pi->pg_num_mask = (1 << calc_bits_of(pi->pg_num-1)) - 1; 494f6a7e5eSSage Weil pi->pgp_num_mask = (1 << calc_bits_of(pi->pgp_num-1)) - 1; 503d14c5d2SYehuda Sadeh } 513d14c5d2SYehuda Sadeh 523d14c5d2SYehuda Sadeh /* 533d14c5d2SYehuda Sadeh * decode crush map 543d14c5d2SYehuda Sadeh */ 553d14c5d2SYehuda Sadeh static int crush_decode_uniform_bucket(void **p, void *end, 563d14c5d2SYehuda Sadeh struct crush_bucket_uniform *b) 573d14c5d2SYehuda Sadeh { 583d14c5d2SYehuda Sadeh dout("crush_decode_uniform_bucket %p to %p\n", *p, end); 593d14c5d2SYehuda Sadeh ceph_decode_need(p, end, (1+b->h.size) * sizeof(u32), bad); 603d14c5d2SYehuda Sadeh b->item_weight = ceph_decode_32(p); 613d14c5d2SYehuda Sadeh return 0; 623d14c5d2SYehuda Sadeh bad: 633d14c5d2SYehuda Sadeh return -EINVAL; 643d14c5d2SYehuda Sadeh } 653d14c5d2SYehuda Sadeh 663d14c5d2SYehuda Sadeh static int crush_decode_list_bucket(void **p, void *end, 673d14c5d2SYehuda Sadeh struct crush_bucket_list *b) 683d14c5d2SYehuda Sadeh { 693d14c5d2SYehuda Sadeh int j; 703d14c5d2SYehuda Sadeh dout("crush_decode_list_bucket %p to %p\n", *p, end); 713d14c5d2SYehuda Sadeh b->item_weights = kcalloc(b->h.size, sizeof(u32), GFP_NOFS); 723d14c5d2SYehuda Sadeh if (b->item_weights == NULL) 733d14c5d2SYehuda Sadeh return -ENOMEM; 743d14c5d2SYehuda Sadeh b->sum_weights = kcalloc(b->h.size, sizeof(u32), GFP_NOFS); 753d14c5d2SYehuda Sadeh if (b->sum_weights == NULL) 763d14c5d2SYehuda Sadeh return -ENOMEM; 773d14c5d2SYehuda Sadeh ceph_decode_need(p, end, 2 * b->h.size * sizeof(u32), bad); 783d14c5d2SYehuda Sadeh for (j = 0; j < b->h.size; j++) { 793d14c5d2SYehuda Sadeh b->item_weights[j] = ceph_decode_32(p); 803d14c5d2SYehuda Sadeh b->sum_weights[j] = ceph_decode_32(p); 813d14c5d2SYehuda Sadeh } 823d14c5d2SYehuda Sadeh return 0; 833d14c5d2SYehuda Sadeh bad: 843d14c5d2SYehuda Sadeh return -EINVAL; 853d14c5d2SYehuda Sadeh } 863d14c5d2SYehuda Sadeh 873d14c5d2SYehuda Sadeh static int crush_decode_tree_bucket(void **p, void *end, 883d14c5d2SYehuda Sadeh struct crush_bucket_tree *b) 893d14c5d2SYehuda Sadeh { 903d14c5d2SYehuda Sadeh int j; 913d14c5d2SYehuda Sadeh dout("crush_decode_tree_bucket %p to %p\n", *p, end); 923d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, b->num_nodes, bad); 933d14c5d2SYehuda Sadeh b->node_weights = kcalloc(b->num_nodes, sizeof(u32), GFP_NOFS); 943d14c5d2SYehuda Sadeh if (b->node_weights == NULL) 953d14c5d2SYehuda Sadeh return -ENOMEM; 963d14c5d2SYehuda Sadeh ceph_decode_need(p, end, b->num_nodes * sizeof(u32), bad); 973d14c5d2SYehuda Sadeh for (j = 0; j < b->num_nodes; j++) 983d14c5d2SYehuda Sadeh b->node_weights[j] = ceph_decode_32(p); 993d14c5d2SYehuda Sadeh return 0; 1003d14c5d2SYehuda Sadeh bad: 1013d14c5d2SYehuda Sadeh return -EINVAL; 1023d14c5d2SYehuda Sadeh } 1033d14c5d2SYehuda Sadeh 1043d14c5d2SYehuda Sadeh static int crush_decode_straw_bucket(void **p, void *end, 1053d14c5d2SYehuda Sadeh struct crush_bucket_straw *b) 1063d14c5d2SYehuda Sadeh { 1073d14c5d2SYehuda Sadeh int j; 1083d14c5d2SYehuda Sadeh dout("crush_decode_straw_bucket %p to %p\n", *p, end); 1093d14c5d2SYehuda Sadeh b->item_weights = kcalloc(b->h.size, sizeof(u32), GFP_NOFS); 1103d14c5d2SYehuda Sadeh if (b->item_weights == NULL) 1113d14c5d2SYehuda Sadeh return -ENOMEM; 1123d14c5d2SYehuda Sadeh b->straws = kcalloc(b->h.size, sizeof(u32), GFP_NOFS); 1133d14c5d2SYehuda Sadeh if (b->straws == NULL) 1143d14c5d2SYehuda Sadeh return -ENOMEM; 1153d14c5d2SYehuda Sadeh ceph_decode_need(p, end, 2 * b->h.size * sizeof(u32), bad); 1163d14c5d2SYehuda Sadeh for (j = 0; j < b->h.size; j++) { 1173d14c5d2SYehuda Sadeh b->item_weights[j] = ceph_decode_32(p); 1183d14c5d2SYehuda Sadeh b->straws[j] = ceph_decode_32(p); 1193d14c5d2SYehuda Sadeh } 1203d14c5d2SYehuda Sadeh return 0; 1213d14c5d2SYehuda Sadeh bad: 1223d14c5d2SYehuda Sadeh return -EINVAL; 1233d14c5d2SYehuda Sadeh } 1243d14c5d2SYehuda Sadeh 125546f04efSSage Weil static int skip_name_map(void **p, void *end) 126546f04efSSage Weil { 127546f04efSSage Weil int len; 128546f04efSSage Weil ceph_decode_32_safe(p, end, len ,bad); 129546f04efSSage Weil while (len--) { 130546f04efSSage Weil int strlen; 131546f04efSSage Weil *p += sizeof(u32); 132546f04efSSage Weil ceph_decode_32_safe(p, end, strlen, bad); 133546f04efSSage Weil *p += strlen; 134546f04efSSage Weil } 135546f04efSSage Weil return 0; 136546f04efSSage Weil bad: 137546f04efSSage Weil return -EINVAL; 138546f04efSSage Weil } 139546f04efSSage Weil 1403d14c5d2SYehuda Sadeh static struct crush_map *crush_decode(void *pbyval, void *end) 1413d14c5d2SYehuda Sadeh { 1423d14c5d2SYehuda Sadeh struct crush_map *c; 1433d14c5d2SYehuda Sadeh int err = -EINVAL; 1443d14c5d2SYehuda Sadeh int i, j; 1453d14c5d2SYehuda Sadeh void **p = &pbyval; 1463d14c5d2SYehuda Sadeh void *start = pbyval; 1473d14c5d2SYehuda Sadeh u32 magic; 148546f04efSSage Weil u32 num_name_maps; 1493d14c5d2SYehuda Sadeh 1503d14c5d2SYehuda Sadeh dout("crush_decode %p to %p len %d\n", *p, end, (int)(end - *p)); 1513d14c5d2SYehuda Sadeh 1523d14c5d2SYehuda Sadeh c = kzalloc(sizeof(*c), GFP_NOFS); 1533d14c5d2SYehuda Sadeh if (c == NULL) 1543d14c5d2SYehuda Sadeh return ERR_PTR(-ENOMEM); 1553d14c5d2SYehuda Sadeh 156546f04efSSage Weil /* set tunables to default values */ 157546f04efSSage Weil c->choose_local_tries = 2; 158546f04efSSage Weil c->choose_local_fallback_tries = 5; 159546f04efSSage Weil c->choose_total_tries = 19; 1601604f488SJim Schutt c->chooseleaf_descend_once = 0; 161546f04efSSage Weil 1623d14c5d2SYehuda Sadeh ceph_decode_need(p, end, 4*sizeof(u32), bad); 1633d14c5d2SYehuda Sadeh magic = ceph_decode_32(p); 1643d14c5d2SYehuda Sadeh if (magic != CRUSH_MAGIC) { 1653d14c5d2SYehuda Sadeh pr_err("crush_decode magic %x != current %x\n", 16695c96174SEric Dumazet (unsigned int)magic, (unsigned int)CRUSH_MAGIC); 1673d14c5d2SYehuda Sadeh goto bad; 1683d14c5d2SYehuda Sadeh } 1693d14c5d2SYehuda Sadeh c->max_buckets = ceph_decode_32(p); 1703d14c5d2SYehuda Sadeh c->max_rules = ceph_decode_32(p); 1713d14c5d2SYehuda Sadeh c->max_devices = ceph_decode_32(p); 1723d14c5d2SYehuda Sadeh 1733d14c5d2SYehuda Sadeh c->buckets = kcalloc(c->max_buckets, sizeof(*c->buckets), GFP_NOFS); 1743d14c5d2SYehuda Sadeh if (c->buckets == NULL) 1753d14c5d2SYehuda Sadeh goto badmem; 1763d14c5d2SYehuda Sadeh c->rules = kcalloc(c->max_rules, sizeof(*c->rules), GFP_NOFS); 1773d14c5d2SYehuda Sadeh if (c->rules == NULL) 1783d14c5d2SYehuda Sadeh goto badmem; 1793d14c5d2SYehuda Sadeh 1803d14c5d2SYehuda Sadeh /* buckets */ 1813d14c5d2SYehuda Sadeh for (i = 0; i < c->max_buckets; i++) { 1823d14c5d2SYehuda Sadeh int size = 0; 1833d14c5d2SYehuda Sadeh u32 alg; 1843d14c5d2SYehuda Sadeh struct crush_bucket *b; 1853d14c5d2SYehuda Sadeh 1863d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, alg, bad); 1873d14c5d2SYehuda Sadeh if (alg == 0) { 1883d14c5d2SYehuda Sadeh c->buckets[i] = NULL; 1893d14c5d2SYehuda Sadeh continue; 1903d14c5d2SYehuda Sadeh } 1913d14c5d2SYehuda Sadeh dout("crush_decode bucket %d off %x %p to %p\n", 1923d14c5d2SYehuda Sadeh i, (int)(*p-start), *p, end); 1933d14c5d2SYehuda Sadeh 1943d14c5d2SYehuda Sadeh switch (alg) { 1953d14c5d2SYehuda Sadeh case CRUSH_BUCKET_UNIFORM: 1963d14c5d2SYehuda Sadeh size = sizeof(struct crush_bucket_uniform); 1973d14c5d2SYehuda Sadeh break; 1983d14c5d2SYehuda Sadeh case CRUSH_BUCKET_LIST: 1993d14c5d2SYehuda Sadeh size = sizeof(struct crush_bucket_list); 2003d14c5d2SYehuda Sadeh break; 2013d14c5d2SYehuda Sadeh case CRUSH_BUCKET_TREE: 2023d14c5d2SYehuda Sadeh size = sizeof(struct crush_bucket_tree); 2033d14c5d2SYehuda Sadeh break; 2043d14c5d2SYehuda Sadeh case CRUSH_BUCKET_STRAW: 2053d14c5d2SYehuda Sadeh size = sizeof(struct crush_bucket_straw); 2063d14c5d2SYehuda Sadeh break; 2073d14c5d2SYehuda Sadeh default: 2083d14c5d2SYehuda Sadeh err = -EINVAL; 2093d14c5d2SYehuda Sadeh goto bad; 2103d14c5d2SYehuda Sadeh } 2113d14c5d2SYehuda Sadeh BUG_ON(size == 0); 2123d14c5d2SYehuda Sadeh b = c->buckets[i] = kzalloc(size, GFP_NOFS); 2133d14c5d2SYehuda Sadeh if (b == NULL) 2143d14c5d2SYehuda Sadeh goto badmem; 2153d14c5d2SYehuda Sadeh 2163d14c5d2SYehuda Sadeh ceph_decode_need(p, end, 4*sizeof(u32), bad); 2173d14c5d2SYehuda Sadeh b->id = ceph_decode_32(p); 2183d14c5d2SYehuda Sadeh b->type = ceph_decode_16(p); 2193d14c5d2SYehuda Sadeh b->alg = ceph_decode_8(p); 2203d14c5d2SYehuda Sadeh b->hash = ceph_decode_8(p); 2213d14c5d2SYehuda Sadeh b->weight = ceph_decode_32(p); 2223d14c5d2SYehuda Sadeh b->size = ceph_decode_32(p); 2233d14c5d2SYehuda Sadeh 2243d14c5d2SYehuda Sadeh dout("crush_decode bucket size %d off %x %p to %p\n", 2253d14c5d2SYehuda Sadeh b->size, (int)(*p-start), *p, end); 2263d14c5d2SYehuda Sadeh 2273d14c5d2SYehuda Sadeh b->items = kcalloc(b->size, sizeof(__s32), GFP_NOFS); 2283d14c5d2SYehuda Sadeh if (b->items == NULL) 2293d14c5d2SYehuda Sadeh goto badmem; 2303d14c5d2SYehuda Sadeh b->perm = kcalloc(b->size, sizeof(u32), GFP_NOFS); 2313d14c5d2SYehuda Sadeh if (b->perm == NULL) 2323d14c5d2SYehuda Sadeh goto badmem; 2333d14c5d2SYehuda Sadeh b->perm_n = 0; 2343d14c5d2SYehuda Sadeh 2353d14c5d2SYehuda Sadeh ceph_decode_need(p, end, b->size*sizeof(u32), bad); 2363d14c5d2SYehuda Sadeh for (j = 0; j < b->size; j++) 2373d14c5d2SYehuda Sadeh b->items[j] = ceph_decode_32(p); 2383d14c5d2SYehuda Sadeh 2393d14c5d2SYehuda Sadeh switch (b->alg) { 2403d14c5d2SYehuda Sadeh case CRUSH_BUCKET_UNIFORM: 2413d14c5d2SYehuda Sadeh err = crush_decode_uniform_bucket(p, end, 2423d14c5d2SYehuda Sadeh (struct crush_bucket_uniform *)b); 2433d14c5d2SYehuda Sadeh if (err < 0) 2443d14c5d2SYehuda Sadeh goto bad; 2453d14c5d2SYehuda Sadeh break; 2463d14c5d2SYehuda Sadeh case CRUSH_BUCKET_LIST: 2473d14c5d2SYehuda Sadeh err = crush_decode_list_bucket(p, end, 2483d14c5d2SYehuda Sadeh (struct crush_bucket_list *)b); 2493d14c5d2SYehuda Sadeh if (err < 0) 2503d14c5d2SYehuda Sadeh goto bad; 2513d14c5d2SYehuda Sadeh break; 2523d14c5d2SYehuda Sadeh case CRUSH_BUCKET_TREE: 2533d14c5d2SYehuda Sadeh err = crush_decode_tree_bucket(p, end, 2543d14c5d2SYehuda Sadeh (struct crush_bucket_tree *)b); 2553d14c5d2SYehuda Sadeh if (err < 0) 2563d14c5d2SYehuda Sadeh goto bad; 2573d14c5d2SYehuda Sadeh break; 2583d14c5d2SYehuda Sadeh case CRUSH_BUCKET_STRAW: 2593d14c5d2SYehuda Sadeh err = crush_decode_straw_bucket(p, end, 2603d14c5d2SYehuda Sadeh (struct crush_bucket_straw *)b); 2613d14c5d2SYehuda Sadeh if (err < 0) 2623d14c5d2SYehuda Sadeh goto bad; 2633d14c5d2SYehuda Sadeh break; 2643d14c5d2SYehuda Sadeh } 2653d14c5d2SYehuda Sadeh } 2663d14c5d2SYehuda Sadeh 2673d14c5d2SYehuda Sadeh /* rules */ 2683d14c5d2SYehuda Sadeh dout("rule vec is %p\n", c->rules); 2693d14c5d2SYehuda Sadeh for (i = 0; i < c->max_rules; i++) { 2703d14c5d2SYehuda Sadeh u32 yes; 2713d14c5d2SYehuda Sadeh struct crush_rule *r; 2723d14c5d2SYehuda Sadeh 2733d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, yes, bad); 2743d14c5d2SYehuda Sadeh if (!yes) { 2753d14c5d2SYehuda Sadeh dout("crush_decode NO rule %d off %x %p to %p\n", 2763d14c5d2SYehuda Sadeh i, (int)(*p-start), *p, end); 2773d14c5d2SYehuda Sadeh c->rules[i] = NULL; 2783d14c5d2SYehuda Sadeh continue; 2793d14c5d2SYehuda Sadeh } 2803d14c5d2SYehuda Sadeh 2813d14c5d2SYehuda Sadeh dout("crush_decode rule %d off %x %p to %p\n", 2823d14c5d2SYehuda Sadeh i, (int)(*p-start), *p, end); 2833d14c5d2SYehuda Sadeh 2843d14c5d2SYehuda Sadeh /* len */ 2853d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, yes, bad); 2863d14c5d2SYehuda Sadeh #if BITS_PER_LONG == 32 2873d14c5d2SYehuda Sadeh err = -EINVAL; 28864486697SXi Wang if (yes > (ULONG_MAX - sizeof(*r)) 28964486697SXi Wang / sizeof(struct crush_rule_step)) 2903d14c5d2SYehuda Sadeh goto bad; 2913d14c5d2SYehuda Sadeh #endif 2923d14c5d2SYehuda Sadeh r = c->rules[i] = kmalloc(sizeof(*r) + 2933d14c5d2SYehuda Sadeh yes*sizeof(struct crush_rule_step), 2943d14c5d2SYehuda Sadeh GFP_NOFS); 2953d14c5d2SYehuda Sadeh if (r == NULL) 2963d14c5d2SYehuda Sadeh goto badmem; 2973d14c5d2SYehuda Sadeh dout(" rule %d is at %p\n", i, r); 2983d14c5d2SYehuda Sadeh r->len = yes; 2993d14c5d2SYehuda Sadeh ceph_decode_copy_safe(p, end, &r->mask, 4, bad); /* 4 u8's */ 3003d14c5d2SYehuda Sadeh ceph_decode_need(p, end, r->len*3*sizeof(u32), bad); 3013d14c5d2SYehuda Sadeh for (j = 0; j < r->len; j++) { 3023d14c5d2SYehuda Sadeh r->steps[j].op = ceph_decode_32(p); 3033d14c5d2SYehuda Sadeh r->steps[j].arg1 = ceph_decode_32(p); 3043d14c5d2SYehuda Sadeh r->steps[j].arg2 = ceph_decode_32(p); 3053d14c5d2SYehuda Sadeh } 3063d14c5d2SYehuda Sadeh } 3073d14c5d2SYehuda Sadeh 3083d14c5d2SYehuda Sadeh /* ignore trailing name maps. */ 309546f04efSSage Weil for (num_name_maps = 0; num_name_maps < 3; num_name_maps++) { 310546f04efSSage Weil err = skip_name_map(p, end); 311546f04efSSage Weil if (err < 0) 312546f04efSSage Weil goto done; 313546f04efSSage Weil } 3143d14c5d2SYehuda Sadeh 315546f04efSSage Weil /* tunables */ 316546f04efSSage Weil ceph_decode_need(p, end, 3*sizeof(u32), done); 317546f04efSSage Weil c->choose_local_tries = ceph_decode_32(p); 318546f04efSSage Weil c->choose_local_fallback_tries = ceph_decode_32(p); 319546f04efSSage Weil c->choose_total_tries = ceph_decode_32(p); 320546f04efSSage Weil dout("crush decode tunable choose_local_tries = %d", 321546f04efSSage Weil c->choose_local_tries); 322546f04efSSage Weil dout("crush decode tunable choose_local_fallback_tries = %d", 323546f04efSSage Weil c->choose_local_fallback_tries); 324546f04efSSage Weil dout("crush decode tunable choose_total_tries = %d", 325546f04efSSage Weil c->choose_total_tries); 326546f04efSSage Weil 3271604f488SJim Schutt ceph_decode_need(p, end, sizeof(u32), done); 3281604f488SJim Schutt c->chooseleaf_descend_once = ceph_decode_32(p); 3291604f488SJim Schutt dout("crush decode tunable chooseleaf_descend_once = %d", 3301604f488SJim Schutt c->chooseleaf_descend_once); 3311604f488SJim Schutt 332546f04efSSage Weil done: 3333d14c5d2SYehuda Sadeh dout("crush_decode success\n"); 3343d14c5d2SYehuda Sadeh return c; 3353d14c5d2SYehuda Sadeh 3363d14c5d2SYehuda Sadeh badmem: 3373d14c5d2SYehuda Sadeh err = -ENOMEM; 3383d14c5d2SYehuda Sadeh bad: 3393d14c5d2SYehuda Sadeh dout("crush_decode fail %d\n", err); 3403d14c5d2SYehuda Sadeh crush_destroy(c); 3413d14c5d2SYehuda Sadeh return ERR_PTR(err); 3423d14c5d2SYehuda Sadeh } 3433d14c5d2SYehuda Sadeh 3443d14c5d2SYehuda Sadeh /* 3453d14c5d2SYehuda Sadeh * rbtree of pg_mapping for handling pg_temp (explicit mapping of pgid 3463d14c5d2SYehuda Sadeh * to a set of osds) 3473d14c5d2SYehuda Sadeh */ 3485b191d99SSage Weil static int pgid_cmp(struct ceph_pg l, struct ceph_pg r) 3493d14c5d2SYehuda Sadeh { 3505b191d99SSage Weil if (l.pool < r.pool) 3513d14c5d2SYehuda Sadeh return -1; 3525b191d99SSage Weil if (l.pool > r.pool) 3535b191d99SSage Weil return 1; 3545b191d99SSage Weil if (l.seed < r.seed) 3555b191d99SSage Weil return -1; 3565b191d99SSage Weil if (l.seed > r.seed) 3573d14c5d2SYehuda Sadeh return 1; 3583d14c5d2SYehuda Sadeh return 0; 3593d14c5d2SYehuda Sadeh } 3603d14c5d2SYehuda Sadeh 3613d14c5d2SYehuda Sadeh static int __insert_pg_mapping(struct ceph_pg_mapping *new, 3623d14c5d2SYehuda Sadeh struct rb_root *root) 3633d14c5d2SYehuda Sadeh { 3643d14c5d2SYehuda Sadeh struct rb_node **p = &root->rb_node; 3653d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 3663d14c5d2SYehuda Sadeh struct ceph_pg_mapping *pg = NULL; 3673d14c5d2SYehuda Sadeh int c; 3683d14c5d2SYehuda Sadeh 3698adc8b3dSSage Weil dout("__insert_pg_mapping %llx %p\n", *(u64 *)&new->pgid, new); 3703d14c5d2SYehuda Sadeh while (*p) { 3713d14c5d2SYehuda Sadeh parent = *p; 3723d14c5d2SYehuda Sadeh pg = rb_entry(parent, struct ceph_pg_mapping, node); 3733d14c5d2SYehuda Sadeh c = pgid_cmp(new->pgid, pg->pgid); 3743d14c5d2SYehuda Sadeh if (c < 0) 3753d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 3763d14c5d2SYehuda Sadeh else if (c > 0) 3773d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 3783d14c5d2SYehuda Sadeh else 3793d14c5d2SYehuda Sadeh return -EEXIST; 3803d14c5d2SYehuda Sadeh } 3813d14c5d2SYehuda Sadeh 3823d14c5d2SYehuda Sadeh rb_link_node(&new->node, parent, p); 3833d14c5d2SYehuda Sadeh rb_insert_color(&new->node, root); 3843d14c5d2SYehuda Sadeh return 0; 3853d14c5d2SYehuda Sadeh } 3863d14c5d2SYehuda Sadeh 3873d14c5d2SYehuda Sadeh static struct ceph_pg_mapping *__lookup_pg_mapping(struct rb_root *root, 3885b191d99SSage Weil struct ceph_pg pgid) 3893d14c5d2SYehuda Sadeh { 3903d14c5d2SYehuda Sadeh struct rb_node *n = root->rb_node; 3913d14c5d2SYehuda Sadeh struct ceph_pg_mapping *pg; 3923d14c5d2SYehuda Sadeh int c; 3933d14c5d2SYehuda Sadeh 3943d14c5d2SYehuda Sadeh while (n) { 3953d14c5d2SYehuda Sadeh pg = rb_entry(n, struct ceph_pg_mapping, node); 3963d14c5d2SYehuda Sadeh c = pgid_cmp(pgid, pg->pgid); 3978adc8b3dSSage Weil if (c < 0) { 3983d14c5d2SYehuda Sadeh n = n->rb_left; 3998adc8b3dSSage Weil } else if (c > 0) { 4003d14c5d2SYehuda Sadeh n = n->rb_right; 4018adc8b3dSSage Weil } else { 4025b191d99SSage Weil dout("__lookup_pg_mapping %lld.%x got %p\n", 4035b191d99SSage Weil pgid.pool, pgid.seed, pg); 4043d14c5d2SYehuda Sadeh return pg; 4053d14c5d2SYehuda Sadeh } 4068adc8b3dSSage Weil } 4073d14c5d2SYehuda Sadeh return NULL; 4083d14c5d2SYehuda Sadeh } 4093d14c5d2SYehuda Sadeh 4105b191d99SSage Weil static int __remove_pg_mapping(struct rb_root *root, struct ceph_pg pgid) 4118adc8b3dSSage Weil { 4128adc8b3dSSage Weil struct ceph_pg_mapping *pg = __lookup_pg_mapping(root, pgid); 4138adc8b3dSSage Weil 4148adc8b3dSSage Weil if (pg) { 4155b191d99SSage Weil dout("__remove_pg_mapping %lld.%x %p\n", pgid.pool, pgid.seed, 4165b191d99SSage Weil pg); 4178adc8b3dSSage Weil rb_erase(&pg->node, root); 4188adc8b3dSSage Weil kfree(pg); 4198adc8b3dSSage Weil return 0; 4208adc8b3dSSage Weil } 4215b191d99SSage Weil dout("__remove_pg_mapping %lld.%x dne\n", pgid.pool, pgid.seed); 4228adc8b3dSSage Weil return -ENOENT; 4238adc8b3dSSage Weil } 4248adc8b3dSSage Weil 4253d14c5d2SYehuda Sadeh /* 4263d14c5d2SYehuda Sadeh * rbtree of pg pool info 4273d14c5d2SYehuda Sadeh */ 4283d14c5d2SYehuda Sadeh static int __insert_pg_pool(struct rb_root *root, struct ceph_pg_pool_info *new) 4293d14c5d2SYehuda Sadeh { 4303d14c5d2SYehuda Sadeh struct rb_node **p = &root->rb_node; 4313d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 4323d14c5d2SYehuda Sadeh struct ceph_pg_pool_info *pi = NULL; 4333d14c5d2SYehuda Sadeh 4343d14c5d2SYehuda Sadeh while (*p) { 4353d14c5d2SYehuda Sadeh parent = *p; 4363d14c5d2SYehuda Sadeh pi = rb_entry(parent, struct ceph_pg_pool_info, node); 4373d14c5d2SYehuda Sadeh if (new->id < pi->id) 4383d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 4393d14c5d2SYehuda Sadeh else if (new->id > pi->id) 4403d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 4413d14c5d2SYehuda Sadeh else 4423d14c5d2SYehuda Sadeh return -EEXIST; 4433d14c5d2SYehuda Sadeh } 4443d14c5d2SYehuda Sadeh 4453d14c5d2SYehuda Sadeh rb_link_node(&new->node, parent, p); 4463d14c5d2SYehuda Sadeh rb_insert_color(&new->node, root); 4473d14c5d2SYehuda Sadeh return 0; 4483d14c5d2SYehuda Sadeh } 4493d14c5d2SYehuda Sadeh 4504f6a7e5eSSage Weil static struct ceph_pg_pool_info *__lookup_pg_pool(struct rb_root *root, u64 id) 4513d14c5d2SYehuda Sadeh { 4523d14c5d2SYehuda Sadeh struct ceph_pg_pool_info *pi; 4533d14c5d2SYehuda Sadeh struct rb_node *n = root->rb_node; 4543d14c5d2SYehuda Sadeh 4553d14c5d2SYehuda Sadeh while (n) { 4563d14c5d2SYehuda Sadeh pi = rb_entry(n, struct ceph_pg_pool_info, node); 4573d14c5d2SYehuda Sadeh if (id < pi->id) 4583d14c5d2SYehuda Sadeh n = n->rb_left; 4593d14c5d2SYehuda Sadeh else if (id > pi->id) 4603d14c5d2SYehuda Sadeh n = n->rb_right; 4613d14c5d2SYehuda Sadeh else 4623d14c5d2SYehuda Sadeh return pi; 4633d14c5d2SYehuda Sadeh } 4643d14c5d2SYehuda Sadeh return NULL; 4653d14c5d2SYehuda Sadeh } 4663d14c5d2SYehuda Sadeh 46772afc71fSAlex Elder const char *ceph_pg_pool_name_by_id(struct ceph_osdmap *map, u64 id) 46872afc71fSAlex Elder { 46972afc71fSAlex Elder struct ceph_pg_pool_info *pi; 47072afc71fSAlex Elder 47172afc71fSAlex Elder if (id == CEPH_NOPOOL) 47272afc71fSAlex Elder return NULL; 47372afc71fSAlex Elder 47472afc71fSAlex Elder if (WARN_ON_ONCE(id > (u64) INT_MAX)) 47572afc71fSAlex Elder return NULL; 47672afc71fSAlex Elder 47772afc71fSAlex Elder pi = __lookup_pg_pool(&map->pg_pools, (int) id); 47872afc71fSAlex Elder 47972afc71fSAlex Elder return pi ? pi->name : NULL; 48072afc71fSAlex Elder } 48172afc71fSAlex Elder EXPORT_SYMBOL(ceph_pg_pool_name_by_id); 48272afc71fSAlex Elder 4833d14c5d2SYehuda Sadeh int ceph_pg_poolid_by_name(struct ceph_osdmap *map, const char *name) 4843d14c5d2SYehuda Sadeh { 4853d14c5d2SYehuda Sadeh struct rb_node *rbp; 4863d14c5d2SYehuda Sadeh 4873d14c5d2SYehuda Sadeh for (rbp = rb_first(&map->pg_pools); rbp; rbp = rb_next(rbp)) { 4883d14c5d2SYehuda Sadeh struct ceph_pg_pool_info *pi = 4893d14c5d2SYehuda Sadeh rb_entry(rbp, struct ceph_pg_pool_info, node); 4903d14c5d2SYehuda Sadeh if (pi->name && strcmp(pi->name, name) == 0) 4913d14c5d2SYehuda Sadeh return pi->id; 4923d14c5d2SYehuda Sadeh } 4933d14c5d2SYehuda Sadeh return -ENOENT; 4943d14c5d2SYehuda Sadeh } 4953d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_pg_poolid_by_name); 4963d14c5d2SYehuda Sadeh 4973d14c5d2SYehuda Sadeh static void __remove_pg_pool(struct rb_root *root, struct ceph_pg_pool_info *pi) 4983d14c5d2SYehuda Sadeh { 4993d14c5d2SYehuda Sadeh rb_erase(&pi->node, root); 5003d14c5d2SYehuda Sadeh kfree(pi->name); 5013d14c5d2SYehuda Sadeh kfree(pi); 5023d14c5d2SYehuda Sadeh } 5033d14c5d2SYehuda Sadeh 5043d14c5d2SYehuda Sadeh static int __decode_pool(void **p, void *end, struct ceph_pg_pool_info *pi) 5053d14c5d2SYehuda Sadeh { 5064f6a7e5eSSage Weil u8 ev, cv; 5074f6a7e5eSSage Weil unsigned len, num; 5084f6a7e5eSSage Weil void *pool_end; 5093d14c5d2SYehuda Sadeh 5104f6a7e5eSSage Weil ceph_decode_need(p, end, 2 + 4, bad); 5114f6a7e5eSSage Weil ev = ceph_decode_8(p); /* encoding version */ 5124f6a7e5eSSage Weil cv = ceph_decode_8(p); /* compat version */ 5134f6a7e5eSSage Weil if (ev < 5) { 5144f6a7e5eSSage Weil pr_warning("got v %d < 5 cv %d of ceph_pg_pool\n", ev, cv); 5154f6a7e5eSSage Weil return -EINVAL; 5164f6a7e5eSSage Weil } 5174f6a7e5eSSage Weil if (cv > 7) { 5184f6a7e5eSSage Weil pr_warning("got v %d cv %d > 7 of ceph_pg_pool\n", ev, cv); 5194f6a7e5eSSage Weil return -EINVAL; 5204f6a7e5eSSage Weil } 5214f6a7e5eSSage Weil len = ceph_decode_32(p); 5224f6a7e5eSSage Weil ceph_decode_need(p, end, len, bad); 5234f6a7e5eSSage Weil pool_end = *p + len; 5243d14c5d2SYehuda Sadeh 5254f6a7e5eSSage Weil pi->type = ceph_decode_8(p); 5264f6a7e5eSSage Weil pi->size = ceph_decode_8(p); 5274f6a7e5eSSage Weil pi->crush_ruleset = ceph_decode_8(p); 5284f6a7e5eSSage Weil pi->object_hash = ceph_decode_8(p); 5294f6a7e5eSSage Weil 5304f6a7e5eSSage Weil pi->pg_num = ceph_decode_32(p); 5314f6a7e5eSSage Weil pi->pgp_num = ceph_decode_32(p); 5324f6a7e5eSSage Weil 5334f6a7e5eSSage Weil *p += 4 + 4; /* skip lpg* */ 5344f6a7e5eSSage Weil *p += 4; /* skip last_change */ 5354f6a7e5eSSage Weil *p += 8 + 4; /* skip snap_seq, snap_epoch */ 5364f6a7e5eSSage Weil 5374f6a7e5eSSage Weil /* skip snaps */ 5384f6a7e5eSSage Weil num = ceph_decode_32(p); 5394f6a7e5eSSage Weil while (num--) { 5404f6a7e5eSSage Weil *p += 8; /* snapid key */ 5414f6a7e5eSSage Weil *p += 1 + 1; /* versions */ 5424f6a7e5eSSage Weil len = ceph_decode_32(p); 5434f6a7e5eSSage Weil *p += len; 5443d14c5d2SYehuda Sadeh } 5453d14c5d2SYehuda Sadeh 5464f6a7e5eSSage Weil /* skip removed snaps */ 5474f6a7e5eSSage Weil num = ceph_decode_32(p); 5484f6a7e5eSSage Weil *p += num * (8 + 8); 5494f6a7e5eSSage Weil 5504f6a7e5eSSage Weil *p += 8; /* skip auid */ 5514f6a7e5eSSage Weil pi->flags = ceph_decode_64(p); 5524f6a7e5eSSage Weil 5534f6a7e5eSSage Weil /* ignore the rest */ 5544f6a7e5eSSage Weil 5554f6a7e5eSSage Weil *p = pool_end; 5564f6a7e5eSSage Weil calc_pg_masks(pi); 5573d14c5d2SYehuda Sadeh return 0; 5583d14c5d2SYehuda Sadeh 5593d14c5d2SYehuda Sadeh bad: 5603d14c5d2SYehuda Sadeh return -EINVAL; 5613d14c5d2SYehuda Sadeh } 5623d14c5d2SYehuda Sadeh 5633d14c5d2SYehuda Sadeh static int __decode_pool_names(void **p, void *end, struct ceph_osdmap *map) 5643d14c5d2SYehuda Sadeh { 5653d14c5d2SYehuda Sadeh struct ceph_pg_pool_info *pi; 5664f6a7e5eSSage Weil u32 num, len; 5674f6a7e5eSSage Weil u64 pool; 5683d14c5d2SYehuda Sadeh 5693d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, num, bad); 5703d14c5d2SYehuda Sadeh dout(" %d pool names\n", num); 5713d14c5d2SYehuda Sadeh while (num--) { 5724f6a7e5eSSage Weil ceph_decode_64_safe(p, end, pool, bad); 5733d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 5744f6a7e5eSSage Weil dout(" pool %llu len %d\n", pool, len); 575ad3b904cSXi Wang ceph_decode_need(p, end, len, bad); 5763d14c5d2SYehuda Sadeh pi = __lookup_pg_pool(&map->pg_pools, pool); 5773d14c5d2SYehuda Sadeh if (pi) { 578ad3b904cSXi Wang char *name = kstrndup(*p, len, GFP_NOFS); 579ad3b904cSXi Wang 580ad3b904cSXi Wang if (!name) 581ad3b904cSXi Wang return -ENOMEM; 5823d14c5d2SYehuda Sadeh kfree(pi->name); 583ad3b904cSXi Wang pi->name = name; 5843d14c5d2SYehuda Sadeh dout(" name is %s\n", pi->name); 5853d14c5d2SYehuda Sadeh } 5863d14c5d2SYehuda Sadeh *p += len; 5873d14c5d2SYehuda Sadeh } 5883d14c5d2SYehuda Sadeh return 0; 5893d14c5d2SYehuda Sadeh 5903d14c5d2SYehuda Sadeh bad: 5913d14c5d2SYehuda Sadeh return -EINVAL; 5923d14c5d2SYehuda Sadeh } 5933d14c5d2SYehuda Sadeh 5943d14c5d2SYehuda Sadeh /* 5953d14c5d2SYehuda Sadeh * osd map 5963d14c5d2SYehuda Sadeh */ 5973d14c5d2SYehuda Sadeh void ceph_osdmap_destroy(struct ceph_osdmap *map) 5983d14c5d2SYehuda Sadeh { 5993d14c5d2SYehuda Sadeh dout("osdmap_destroy %p\n", map); 6003d14c5d2SYehuda Sadeh if (map->crush) 6013d14c5d2SYehuda Sadeh crush_destroy(map->crush); 6023d14c5d2SYehuda Sadeh while (!RB_EMPTY_ROOT(&map->pg_temp)) { 6033d14c5d2SYehuda Sadeh struct ceph_pg_mapping *pg = 6043d14c5d2SYehuda Sadeh rb_entry(rb_first(&map->pg_temp), 6053d14c5d2SYehuda Sadeh struct ceph_pg_mapping, node); 6063d14c5d2SYehuda Sadeh rb_erase(&pg->node, &map->pg_temp); 6073d14c5d2SYehuda Sadeh kfree(pg); 6083d14c5d2SYehuda Sadeh } 6093d14c5d2SYehuda Sadeh while (!RB_EMPTY_ROOT(&map->pg_pools)) { 6103d14c5d2SYehuda Sadeh struct ceph_pg_pool_info *pi = 6113d14c5d2SYehuda Sadeh rb_entry(rb_first(&map->pg_pools), 6123d14c5d2SYehuda Sadeh struct ceph_pg_pool_info, node); 6133d14c5d2SYehuda Sadeh __remove_pg_pool(&map->pg_pools, pi); 6143d14c5d2SYehuda Sadeh } 6153d14c5d2SYehuda Sadeh kfree(map->osd_state); 6163d14c5d2SYehuda Sadeh kfree(map->osd_weight); 6173d14c5d2SYehuda Sadeh kfree(map->osd_addr); 6183d14c5d2SYehuda Sadeh kfree(map); 6193d14c5d2SYehuda Sadeh } 6203d14c5d2SYehuda Sadeh 6213d14c5d2SYehuda Sadeh /* 6223d14c5d2SYehuda Sadeh * adjust max osd value. reallocate arrays. 6233d14c5d2SYehuda Sadeh */ 6243d14c5d2SYehuda Sadeh static int osdmap_set_max_osd(struct ceph_osdmap *map, int max) 6253d14c5d2SYehuda Sadeh { 6263d14c5d2SYehuda Sadeh u8 *state; 6273d14c5d2SYehuda Sadeh struct ceph_entity_addr *addr; 6283d14c5d2SYehuda Sadeh u32 *weight; 6293d14c5d2SYehuda Sadeh 6303d14c5d2SYehuda Sadeh state = kcalloc(max, sizeof(*state), GFP_NOFS); 6313d14c5d2SYehuda Sadeh addr = kcalloc(max, sizeof(*addr), GFP_NOFS); 6323d14c5d2SYehuda Sadeh weight = kcalloc(max, sizeof(*weight), GFP_NOFS); 6333d14c5d2SYehuda Sadeh if (state == NULL || addr == NULL || weight == NULL) { 6343d14c5d2SYehuda Sadeh kfree(state); 6353d14c5d2SYehuda Sadeh kfree(addr); 6363d14c5d2SYehuda Sadeh kfree(weight); 6373d14c5d2SYehuda Sadeh return -ENOMEM; 6383d14c5d2SYehuda Sadeh } 6393d14c5d2SYehuda Sadeh 6403d14c5d2SYehuda Sadeh /* copy old? */ 6413d14c5d2SYehuda Sadeh if (map->osd_state) { 6423d14c5d2SYehuda Sadeh memcpy(state, map->osd_state, map->max_osd*sizeof(*state)); 6433d14c5d2SYehuda Sadeh memcpy(addr, map->osd_addr, map->max_osd*sizeof(*addr)); 6443d14c5d2SYehuda Sadeh memcpy(weight, map->osd_weight, map->max_osd*sizeof(*weight)); 6453d14c5d2SYehuda Sadeh kfree(map->osd_state); 6463d14c5d2SYehuda Sadeh kfree(map->osd_addr); 6473d14c5d2SYehuda Sadeh kfree(map->osd_weight); 6483d14c5d2SYehuda Sadeh } 6493d14c5d2SYehuda Sadeh 6503d14c5d2SYehuda Sadeh map->osd_state = state; 6513d14c5d2SYehuda Sadeh map->osd_weight = weight; 6523d14c5d2SYehuda Sadeh map->osd_addr = addr; 6533d14c5d2SYehuda Sadeh map->max_osd = max; 6543d14c5d2SYehuda Sadeh return 0; 6553d14c5d2SYehuda Sadeh } 6563d14c5d2SYehuda Sadeh 6573d14c5d2SYehuda Sadeh /* 6583d14c5d2SYehuda Sadeh * decode a full map. 6593d14c5d2SYehuda Sadeh */ 6603d14c5d2SYehuda Sadeh struct ceph_osdmap *osdmap_decode(void **p, void *end) 6613d14c5d2SYehuda Sadeh { 6623d14c5d2SYehuda Sadeh struct ceph_osdmap *map; 6633d14c5d2SYehuda Sadeh u16 version; 6643d14c5d2SYehuda Sadeh u32 len, max, i; 6653d14c5d2SYehuda Sadeh int err = -EINVAL; 6663d14c5d2SYehuda Sadeh void *start = *p; 6673d14c5d2SYehuda Sadeh struct ceph_pg_pool_info *pi; 6683d14c5d2SYehuda Sadeh 6693d14c5d2SYehuda Sadeh dout("osdmap_decode %p to %p len %d\n", *p, end, (int)(end - *p)); 6703d14c5d2SYehuda Sadeh 6713d14c5d2SYehuda Sadeh map = kzalloc(sizeof(*map), GFP_NOFS); 6723d14c5d2SYehuda Sadeh if (map == NULL) 6733d14c5d2SYehuda Sadeh return ERR_PTR(-ENOMEM); 6743d14c5d2SYehuda Sadeh map->pg_temp = RB_ROOT; 6753d14c5d2SYehuda Sadeh 6763d14c5d2SYehuda Sadeh ceph_decode_16_safe(p, end, version, bad); 6774f6a7e5eSSage Weil if (version > 6) { 6784f6a7e5eSSage Weil pr_warning("got unknown v %d > 6 of osdmap\n", version); 6794f6a7e5eSSage Weil goto bad; 6804f6a7e5eSSage Weil } 6814f6a7e5eSSage Weil if (version < 6) { 6824f6a7e5eSSage Weil pr_warning("got old v %d < 6 of osdmap\n", version); 6833d14c5d2SYehuda Sadeh goto bad; 6843d14c5d2SYehuda Sadeh } 6853d14c5d2SYehuda Sadeh 6863d14c5d2SYehuda Sadeh ceph_decode_need(p, end, 2*sizeof(u64)+6*sizeof(u32), bad); 6873d14c5d2SYehuda Sadeh ceph_decode_copy(p, &map->fsid, sizeof(map->fsid)); 6883d14c5d2SYehuda Sadeh map->epoch = ceph_decode_32(p); 6893d14c5d2SYehuda Sadeh ceph_decode_copy(p, &map->created, sizeof(map->created)); 6903d14c5d2SYehuda Sadeh ceph_decode_copy(p, &map->modified, sizeof(map->modified)); 6913d14c5d2SYehuda Sadeh 6923d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, max, bad); 6933d14c5d2SYehuda Sadeh while (max--) { 6944f6a7e5eSSage Weil ceph_decode_need(p, end, 8 + 2, bad); 6950ed7285eSSage Weil err = -ENOMEM; 6963d14c5d2SYehuda Sadeh pi = kzalloc(sizeof(*pi), GFP_NOFS); 6973d14c5d2SYehuda Sadeh if (!pi) 6983d14c5d2SYehuda Sadeh goto bad; 6994f6a7e5eSSage Weil pi->id = ceph_decode_64(p); 7003d14c5d2SYehuda Sadeh err = __decode_pool(p, end, pi); 701b0aee351SJesper Juhl if (err < 0) { 702b0aee351SJesper Juhl kfree(pi); 7033d14c5d2SYehuda Sadeh goto bad; 704b0aee351SJesper Juhl } 7053d14c5d2SYehuda Sadeh __insert_pg_pool(&map->pg_pools, pi); 7063d14c5d2SYehuda Sadeh } 7073d14c5d2SYehuda Sadeh 7080ed7285eSSage Weil err = __decode_pool_names(p, end, map); 7090ed7285eSSage Weil if (err < 0) { 7100ed7285eSSage Weil dout("fail to decode pool names"); 7113d14c5d2SYehuda Sadeh goto bad; 7120ed7285eSSage Weil } 7133d14c5d2SYehuda Sadeh 7143d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, map->pool_max, bad); 7153d14c5d2SYehuda Sadeh 7163d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, map->flags, bad); 7173d14c5d2SYehuda Sadeh 7183d14c5d2SYehuda Sadeh max = ceph_decode_32(p); 7193d14c5d2SYehuda Sadeh 7203d14c5d2SYehuda Sadeh /* (re)alloc osd arrays */ 7213d14c5d2SYehuda Sadeh err = osdmap_set_max_osd(map, max); 7223d14c5d2SYehuda Sadeh if (err < 0) 7233d14c5d2SYehuda Sadeh goto bad; 7243d14c5d2SYehuda Sadeh dout("osdmap_decode max_osd = %d\n", map->max_osd); 7253d14c5d2SYehuda Sadeh 7263d14c5d2SYehuda Sadeh /* osds */ 7273d14c5d2SYehuda Sadeh err = -EINVAL; 7283d14c5d2SYehuda Sadeh ceph_decode_need(p, end, 3*sizeof(u32) + 7293d14c5d2SYehuda Sadeh map->max_osd*(1 + sizeof(*map->osd_weight) + 7303d14c5d2SYehuda Sadeh sizeof(*map->osd_addr)), bad); 7313d14c5d2SYehuda Sadeh *p += 4; /* skip length field (should match max) */ 7323d14c5d2SYehuda Sadeh ceph_decode_copy(p, map->osd_state, map->max_osd); 7333d14c5d2SYehuda Sadeh 7343d14c5d2SYehuda Sadeh *p += 4; /* skip length field (should match max) */ 7353d14c5d2SYehuda Sadeh for (i = 0; i < map->max_osd; i++) 7363d14c5d2SYehuda Sadeh map->osd_weight[i] = ceph_decode_32(p); 7373d14c5d2SYehuda Sadeh 7383d14c5d2SYehuda Sadeh *p += 4; /* skip length field (should match max) */ 7393d14c5d2SYehuda Sadeh ceph_decode_copy(p, map->osd_addr, map->max_osd*sizeof(*map->osd_addr)); 7403d14c5d2SYehuda Sadeh for (i = 0; i < map->max_osd; i++) 7413d14c5d2SYehuda Sadeh ceph_decode_addr(&map->osd_addr[i]); 7423d14c5d2SYehuda Sadeh 7433d14c5d2SYehuda Sadeh /* pg_temp */ 7443d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 7453d14c5d2SYehuda Sadeh for (i = 0; i < len; i++) { 7463d14c5d2SYehuda Sadeh int n, j; 7475b191d99SSage Weil struct ceph_pg pgid; 7483d14c5d2SYehuda Sadeh struct ceph_pg_mapping *pg; 7493d14c5d2SYehuda Sadeh 750ef4859d6SAlex Elder err = ceph_decode_pgid(p, end, &pgid); 751d6c0dd6bSSage Weil if (err) 752d6c0dd6bSSage Weil goto bad; 753d6c0dd6bSSage Weil ceph_decode_need(p, end, sizeof(u32), bad); 7543d14c5d2SYehuda Sadeh n = ceph_decode_32(p); 755e91a9b63SXi Wang err = -EINVAL; 756e91a9b63SXi Wang if (n > (UINT_MAX - sizeof(*pg)) / sizeof(u32)) 757e91a9b63SXi Wang goto bad; 7583d14c5d2SYehuda Sadeh ceph_decode_need(p, end, n * sizeof(u32), bad); 7593d14c5d2SYehuda Sadeh err = -ENOMEM; 7603d14c5d2SYehuda Sadeh pg = kmalloc(sizeof(*pg) + n*sizeof(u32), GFP_NOFS); 7613d14c5d2SYehuda Sadeh if (!pg) 7623d14c5d2SYehuda Sadeh goto bad; 7633d14c5d2SYehuda Sadeh pg->pgid = pgid; 7643d14c5d2SYehuda Sadeh pg->len = n; 7653d14c5d2SYehuda Sadeh for (j = 0; j < n; j++) 7663d14c5d2SYehuda Sadeh pg->osds[j] = ceph_decode_32(p); 7673d14c5d2SYehuda Sadeh 7683d14c5d2SYehuda Sadeh err = __insert_pg_mapping(pg, &map->pg_temp); 7693d14c5d2SYehuda Sadeh if (err) 7703d14c5d2SYehuda Sadeh goto bad; 7715b191d99SSage Weil dout(" added pg_temp %lld.%x len %d\n", pgid.pool, pgid.seed, 7725b191d99SSage Weil len); 7733d14c5d2SYehuda Sadeh } 7743d14c5d2SYehuda Sadeh 7753d14c5d2SYehuda Sadeh /* crush */ 7763d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 7773d14c5d2SYehuda Sadeh dout("osdmap_decode crush len %d from off 0x%x\n", len, 7783d14c5d2SYehuda Sadeh (int)(*p - start)); 7793d14c5d2SYehuda Sadeh ceph_decode_need(p, end, len, bad); 7803d14c5d2SYehuda Sadeh map->crush = crush_decode(*p, end); 7813d14c5d2SYehuda Sadeh *p += len; 7823d14c5d2SYehuda Sadeh if (IS_ERR(map->crush)) { 7833d14c5d2SYehuda Sadeh err = PTR_ERR(map->crush); 7843d14c5d2SYehuda Sadeh map->crush = NULL; 7853d14c5d2SYehuda Sadeh goto bad; 7863d14c5d2SYehuda Sadeh } 7873d14c5d2SYehuda Sadeh 7883d14c5d2SYehuda Sadeh /* ignore the rest of the map */ 7893d14c5d2SYehuda Sadeh *p = end; 7903d14c5d2SYehuda Sadeh 7913d14c5d2SYehuda Sadeh dout("osdmap_decode done %p %p\n", *p, end); 7923d14c5d2SYehuda Sadeh return map; 7933d14c5d2SYehuda Sadeh 7943d14c5d2SYehuda Sadeh bad: 7950ed7285eSSage Weil dout("osdmap_decode fail err %d\n", err); 7963d14c5d2SYehuda Sadeh ceph_osdmap_destroy(map); 7973d14c5d2SYehuda Sadeh return ERR_PTR(err); 7983d14c5d2SYehuda Sadeh } 7993d14c5d2SYehuda Sadeh 8003d14c5d2SYehuda Sadeh /* 8013d14c5d2SYehuda Sadeh * decode and apply an incremental map update. 8023d14c5d2SYehuda Sadeh */ 8033d14c5d2SYehuda Sadeh struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end, 8043d14c5d2SYehuda Sadeh struct ceph_osdmap *map, 8053d14c5d2SYehuda Sadeh struct ceph_messenger *msgr) 8063d14c5d2SYehuda Sadeh { 8073d14c5d2SYehuda Sadeh struct crush_map *newcrush = NULL; 8083d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 8093d14c5d2SYehuda Sadeh u32 epoch = 0; 8103d14c5d2SYehuda Sadeh struct ceph_timespec modified; 8114f6a7e5eSSage Weil s32 len; 8124f6a7e5eSSage Weil u64 pool; 8134f6a7e5eSSage Weil __s64 new_pool_max; 8144f6a7e5eSSage Weil __s32 new_flags, max; 8153d14c5d2SYehuda Sadeh void *start = *p; 8163d14c5d2SYehuda Sadeh int err = -EINVAL; 8173d14c5d2SYehuda Sadeh u16 version; 8183d14c5d2SYehuda Sadeh 8193d14c5d2SYehuda Sadeh ceph_decode_16_safe(p, end, version, bad); 820d6c0dd6bSSage Weil if (version != 6) { 821d6c0dd6bSSage Weil pr_warning("got unknown v %d != 6 of inc osdmap\n", version); 8223d14c5d2SYehuda Sadeh goto bad; 8233d14c5d2SYehuda Sadeh } 8243d14c5d2SYehuda Sadeh 8253d14c5d2SYehuda Sadeh ceph_decode_need(p, end, sizeof(fsid)+sizeof(modified)+2*sizeof(u32), 8263d14c5d2SYehuda Sadeh bad); 8273d14c5d2SYehuda Sadeh ceph_decode_copy(p, &fsid, sizeof(fsid)); 8283d14c5d2SYehuda Sadeh epoch = ceph_decode_32(p); 8293d14c5d2SYehuda Sadeh BUG_ON(epoch != map->epoch+1); 8303d14c5d2SYehuda Sadeh ceph_decode_copy(p, &modified, sizeof(modified)); 8314f6a7e5eSSage Weil new_pool_max = ceph_decode_64(p); 8323d14c5d2SYehuda Sadeh new_flags = ceph_decode_32(p); 8333d14c5d2SYehuda Sadeh 8343d14c5d2SYehuda Sadeh /* full map? */ 8353d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 8363d14c5d2SYehuda Sadeh if (len > 0) { 8373d14c5d2SYehuda Sadeh dout("apply_incremental full map len %d, %p to %p\n", 8383d14c5d2SYehuda Sadeh len, *p, end); 8393d14c5d2SYehuda Sadeh return osdmap_decode(p, min(*p+len, end)); 8403d14c5d2SYehuda Sadeh } 8413d14c5d2SYehuda Sadeh 8423d14c5d2SYehuda Sadeh /* new crush? */ 8433d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 8443d14c5d2SYehuda Sadeh if (len > 0) { 8453d14c5d2SYehuda Sadeh dout("apply_incremental new crush map len %d, %p to %p\n", 8463d14c5d2SYehuda Sadeh len, *p, end); 8473d14c5d2SYehuda Sadeh newcrush = crush_decode(*p, min(*p+len, end)); 8483d14c5d2SYehuda Sadeh if (IS_ERR(newcrush)) 8493d14c5d2SYehuda Sadeh return ERR_CAST(newcrush); 8503d14c5d2SYehuda Sadeh *p += len; 8513d14c5d2SYehuda Sadeh } 8523d14c5d2SYehuda Sadeh 8533d14c5d2SYehuda Sadeh /* new flags? */ 8543d14c5d2SYehuda Sadeh if (new_flags >= 0) 8553d14c5d2SYehuda Sadeh map->flags = new_flags; 8563d14c5d2SYehuda Sadeh if (new_pool_max >= 0) 8573d14c5d2SYehuda Sadeh map->pool_max = new_pool_max; 8583d14c5d2SYehuda Sadeh 8593d14c5d2SYehuda Sadeh ceph_decode_need(p, end, 5*sizeof(u32), bad); 8603d14c5d2SYehuda Sadeh 8613d14c5d2SYehuda Sadeh /* new max? */ 8623d14c5d2SYehuda Sadeh max = ceph_decode_32(p); 8633d14c5d2SYehuda Sadeh if (max >= 0) { 8643d14c5d2SYehuda Sadeh err = osdmap_set_max_osd(map, max); 8653d14c5d2SYehuda Sadeh if (err < 0) 8663d14c5d2SYehuda Sadeh goto bad; 8673d14c5d2SYehuda Sadeh } 8683d14c5d2SYehuda Sadeh 8693d14c5d2SYehuda Sadeh map->epoch++; 87031456665SSage Weil map->modified = modified; 8713d14c5d2SYehuda Sadeh if (newcrush) { 8723d14c5d2SYehuda Sadeh if (map->crush) 8733d14c5d2SYehuda Sadeh crush_destroy(map->crush); 8743d14c5d2SYehuda Sadeh map->crush = newcrush; 8753d14c5d2SYehuda Sadeh newcrush = NULL; 8763d14c5d2SYehuda Sadeh } 8773d14c5d2SYehuda Sadeh 8783d14c5d2SYehuda Sadeh /* new_pool */ 8793d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 8803d14c5d2SYehuda Sadeh while (len--) { 8813d14c5d2SYehuda Sadeh struct ceph_pg_pool_info *pi; 8823d14c5d2SYehuda Sadeh 8834f6a7e5eSSage Weil ceph_decode_64_safe(p, end, pool, bad); 8843d14c5d2SYehuda Sadeh pi = __lookup_pg_pool(&map->pg_pools, pool); 8853d14c5d2SYehuda Sadeh if (!pi) { 8863d14c5d2SYehuda Sadeh pi = kzalloc(sizeof(*pi), GFP_NOFS); 8873d14c5d2SYehuda Sadeh if (!pi) { 8883d14c5d2SYehuda Sadeh err = -ENOMEM; 8893d14c5d2SYehuda Sadeh goto bad; 8903d14c5d2SYehuda Sadeh } 8913d14c5d2SYehuda Sadeh pi->id = pool; 8923d14c5d2SYehuda Sadeh __insert_pg_pool(&map->pg_pools, pi); 8933d14c5d2SYehuda Sadeh } 8943d14c5d2SYehuda Sadeh err = __decode_pool(p, end, pi); 8953d14c5d2SYehuda Sadeh if (err < 0) 8963d14c5d2SYehuda Sadeh goto bad; 8973d14c5d2SYehuda Sadeh } 8980ed7285eSSage Weil if (version >= 5) { 8990ed7285eSSage Weil err = __decode_pool_names(p, end, map); 9000ed7285eSSage Weil if (err < 0) 9013d14c5d2SYehuda Sadeh goto bad; 9020ed7285eSSage Weil } 9033d14c5d2SYehuda Sadeh 9043d14c5d2SYehuda Sadeh /* old_pool */ 9053d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 9063d14c5d2SYehuda Sadeh while (len--) { 9073d14c5d2SYehuda Sadeh struct ceph_pg_pool_info *pi; 9083d14c5d2SYehuda Sadeh 9094f6a7e5eSSage Weil ceph_decode_64_safe(p, end, pool, bad); 9103d14c5d2SYehuda Sadeh pi = __lookup_pg_pool(&map->pg_pools, pool); 9113d14c5d2SYehuda Sadeh if (pi) 9123d14c5d2SYehuda Sadeh __remove_pg_pool(&map->pg_pools, pi); 9133d14c5d2SYehuda Sadeh } 9143d14c5d2SYehuda Sadeh 9153d14c5d2SYehuda Sadeh /* new_up */ 9163d14c5d2SYehuda Sadeh err = -EINVAL; 9173d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 9183d14c5d2SYehuda Sadeh while (len--) { 9193d14c5d2SYehuda Sadeh u32 osd; 9203d14c5d2SYehuda Sadeh struct ceph_entity_addr addr; 9213d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, osd, bad); 9223d14c5d2SYehuda Sadeh ceph_decode_copy_safe(p, end, &addr, sizeof(addr), bad); 9233d14c5d2SYehuda Sadeh ceph_decode_addr(&addr); 9243d14c5d2SYehuda Sadeh pr_info("osd%d up\n", osd); 9253d14c5d2SYehuda Sadeh BUG_ON(osd >= map->max_osd); 9263d14c5d2SYehuda Sadeh map->osd_state[osd] |= CEPH_OSD_UP; 9273d14c5d2SYehuda Sadeh map->osd_addr[osd] = addr; 9283d14c5d2SYehuda Sadeh } 9293d14c5d2SYehuda Sadeh 9307662d8ffSSage Weil /* new_state */ 9313d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 9323d14c5d2SYehuda Sadeh while (len--) { 9333d14c5d2SYehuda Sadeh u32 osd; 9347662d8ffSSage Weil u8 xorstate; 9353d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, osd, bad); 9367662d8ffSSage Weil xorstate = **(u8 **)p; 9373d14c5d2SYehuda Sadeh (*p)++; /* clean flag */ 9387662d8ffSSage Weil if (xorstate == 0) 9397662d8ffSSage Weil xorstate = CEPH_OSD_UP; 9407662d8ffSSage Weil if (xorstate & CEPH_OSD_UP) 9413d14c5d2SYehuda Sadeh pr_info("osd%d down\n", osd); 9423d14c5d2SYehuda Sadeh if (osd < map->max_osd) 9437662d8ffSSage Weil map->osd_state[osd] ^= xorstate; 9443d14c5d2SYehuda Sadeh } 9453d14c5d2SYehuda Sadeh 9463d14c5d2SYehuda Sadeh /* new_weight */ 9473d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 9483d14c5d2SYehuda Sadeh while (len--) { 9493d14c5d2SYehuda Sadeh u32 osd, off; 9503d14c5d2SYehuda Sadeh ceph_decode_need(p, end, sizeof(u32)*2, bad); 9513d14c5d2SYehuda Sadeh osd = ceph_decode_32(p); 9523d14c5d2SYehuda Sadeh off = ceph_decode_32(p); 9533d14c5d2SYehuda Sadeh pr_info("osd%d weight 0x%x %s\n", osd, off, 9543d14c5d2SYehuda Sadeh off == CEPH_OSD_IN ? "(in)" : 9553d14c5d2SYehuda Sadeh (off == CEPH_OSD_OUT ? "(out)" : "")); 9563d14c5d2SYehuda Sadeh if (osd < map->max_osd) 9573d14c5d2SYehuda Sadeh map->osd_weight[osd] = off; 9583d14c5d2SYehuda Sadeh } 9593d14c5d2SYehuda Sadeh 9603d14c5d2SYehuda Sadeh /* new_pg_temp */ 9613d14c5d2SYehuda Sadeh ceph_decode_32_safe(p, end, len, bad); 9623d14c5d2SYehuda Sadeh while (len--) { 9633d14c5d2SYehuda Sadeh struct ceph_pg_mapping *pg; 9643d14c5d2SYehuda Sadeh int j; 9655b191d99SSage Weil struct ceph_pg pgid; 9663d14c5d2SYehuda Sadeh u32 pglen; 9673d14c5d2SYehuda Sadeh 968ef4859d6SAlex Elder err = ceph_decode_pgid(p, end, &pgid); 969d6c0dd6bSSage Weil if (err) 970d6c0dd6bSSage Weil goto bad; 971d6c0dd6bSSage Weil ceph_decode_need(p, end, sizeof(u32), bad); 972d6c0dd6bSSage Weil pglen = ceph_decode_32(p); 9733d14c5d2SYehuda Sadeh if (pglen) { 9743d14c5d2SYehuda Sadeh ceph_decode_need(p, end, pglen*sizeof(u32), bad); 9756bd9adbdSSage Weil 9766bd9adbdSSage Weil /* removing existing (if any) */ 9776bd9adbdSSage Weil (void) __remove_pg_mapping(&map->pg_temp, pgid); 9786bd9adbdSSage Weil 9796bd9adbdSSage Weil /* insert */ 980a5506049SXi Wang err = -EINVAL; 9810ed7285eSSage Weil if (pglen > (UINT_MAX - sizeof(*pg)) / sizeof(u32)) 982a5506049SXi Wang goto bad; 9833d14c5d2SYehuda Sadeh err = -ENOMEM; 9840ed7285eSSage Weil pg = kmalloc(sizeof(*pg) + sizeof(u32)*pglen, GFP_NOFS); 9850ed7285eSSage Weil if (!pg) 9863d14c5d2SYehuda Sadeh goto bad; 9873d14c5d2SYehuda Sadeh pg->pgid = pgid; 9883d14c5d2SYehuda Sadeh pg->len = pglen; 9893d14c5d2SYehuda Sadeh for (j = 0; j < pglen; j++) 9903d14c5d2SYehuda Sadeh pg->osds[j] = ceph_decode_32(p); 9913d14c5d2SYehuda Sadeh err = __insert_pg_mapping(pg, &map->pg_temp); 9923d14c5d2SYehuda Sadeh if (err) { 9933d14c5d2SYehuda Sadeh kfree(pg); 9943d14c5d2SYehuda Sadeh goto bad; 9953d14c5d2SYehuda Sadeh } 9965b191d99SSage Weil dout(" added pg_temp %lld.%x len %d\n", pgid.pool, 9975b191d99SSage Weil pgid.seed, pglen); 9988adc8b3dSSage Weil } else { 9998adc8b3dSSage Weil /* remove */ 10008adc8b3dSSage Weil __remove_pg_mapping(&map->pg_temp, pgid); 10013d14c5d2SYehuda Sadeh } 10023d14c5d2SYehuda Sadeh } 10033d14c5d2SYehuda Sadeh 10043d14c5d2SYehuda Sadeh /* ignore the rest */ 10053d14c5d2SYehuda Sadeh *p = end; 10063d14c5d2SYehuda Sadeh return map; 10073d14c5d2SYehuda Sadeh 10083d14c5d2SYehuda Sadeh bad: 10093d14c5d2SYehuda Sadeh pr_err("corrupt inc osdmap epoch %d off %d (%p of %p-%p)\n", 10103d14c5d2SYehuda Sadeh epoch, (int)(*p - start), *p, start, end); 10113d14c5d2SYehuda Sadeh print_hex_dump(KERN_DEBUG, "osdmap: ", 10123d14c5d2SYehuda Sadeh DUMP_PREFIX_OFFSET, 16, 1, 10133d14c5d2SYehuda Sadeh start, end - start, true); 10143d14c5d2SYehuda Sadeh if (newcrush) 10153d14c5d2SYehuda Sadeh crush_destroy(newcrush); 10163d14c5d2SYehuda Sadeh return ERR_PTR(err); 10173d14c5d2SYehuda Sadeh } 10183d14c5d2SYehuda Sadeh 10193d14c5d2SYehuda Sadeh 10203d14c5d2SYehuda Sadeh 10213d14c5d2SYehuda Sadeh 10223d14c5d2SYehuda Sadeh /* 10233d14c5d2SYehuda Sadeh * calculate file layout from given offset, length. 10243d14c5d2SYehuda Sadeh * fill in correct oid, logical length, and object extent 10253d14c5d2SYehuda Sadeh * offset, length. 10263d14c5d2SYehuda Sadeh * 10273d14c5d2SYehuda Sadeh * for now, we write only a single su, until we can 10283d14c5d2SYehuda Sadeh * pass a stride back to the caller. 10293d14c5d2SYehuda Sadeh */ 1030d63b77f4SSage Weil int ceph_calc_file_object_mapping(struct ceph_file_layout *layout, 1031e8afad65SAlex Elder u64 off, u64 len, 10323d14c5d2SYehuda Sadeh u64 *ono, 10333d14c5d2SYehuda Sadeh u64 *oxoff, u64 *oxlen) 10343d14c5d2SYehuda Sadeh { 10353d14c5d2SYehuda Sadeh u32 osize = le32_to_cpu(layout->fl_object_size); 10363d14c5d2SYehuda Sadeh u32 su = le32_to_cpu(layout->fl_stripe_unit); 10373d14c5d2SYehuda Sadeh u32 sc = le32_to_cpu(layout->fl_stripe_count); 10383d14c5d2SYehuda Sadeh u32 bl, stripeno, stripepos, objsetno; 10393d14c5d2SYehuda Sadeh u32 su_per_object; 10403d14c5d2SYehuda Sadeh u64 t, su_offset; 10413d14c5d2SYehuda Sadeh 1042e8afad65SAlex Elder dout("mapping %llu~%llu osize %u fl_su %u\n", off, len, 10433d14c5d2SYehuda Sadeh osize, su); 1044d63b77f4SSage Weil if (su == 0 || sc == 0) 1045d63b77f4SSage Weil goto invalid; 10463d14c5d2SYehuda Sadeh su_per_object = osize / su; 1047d63b77f4SSage Weil if (su_per_object == 0) 1048d63b77f4SSage Weil goto invalid; 10493d14c5d2SYehuda Sadeh dout("osize %u / su %u = su_per_object %u\n", osize, su, 10503d14c5d2SYehuda Sadeh su_per_object); 10513d14c5d2SYehuda Sadeh 1052d63b77f4SSage Weil if ((su & ~PAGE_MASK) != 0) 1053d63b77f4SSage Weil goto invalid; 1054d63b77f4SSage Weil 10553d14c5d2SYehuda Sadeh /* bl = *off / su; */ 10563d14c5d2SYehuda Sadeh t = off; 10573d14c5d2SYehuda Sadeh do_div(t, su); 10583d14c5d2SYehuda Sadeh bl = t; 10593d14c5d2SYehuda Sadeh dout("off %llu / su %u = bl %u\n", off, su, bl); 10603d14c5d2SYehuda Sadeh 10613d14c5d2SYehuda Sadeh stripeno = bl / sc; 10623d14c5d2SYehuda Sadeh stripepos = bl % sc; 10633d14c5d2SYehuda Sadeh objsetno = stripeno / su_per_object; 10643d14c5d2SYehuda Sadeh 10653d14c5d2SYehuda Sadeh *ono = objsetno * sc + stripepos; 106695c96174SEric Dumazet dout("objset %u * sc %u = ono %u\n", objsetno, sc, (unsigned int)*ono); 10673d14c5d2SYehuda Sadeh 10683d14c5d2SYehuda Sadeh /* *oxoff = *off % layout->fl_stripe_unit; # offset in su */ 10693d14c5d2SYehuda Sadeh t = off; 10703d14c5d2SYehuda Sadeh su_offset = do_div(t, su); 10713d14c5d2SYehuda Sadeh *oxoff = su_offset + (stripeno % su_per_object) * su; 10723d14c5d2SYehuda Sadeh 10733d14c5d2SYehuda Sadeh /* 10743d14c5d2SYehuda Sadeh * Calculate the length of the extent being written to the selected 1075e8afad65SAlex Elder * object. This is the minimum of the full length requested (len) or 10763d14c5d2SYehuda Sadeh * the remainder of the current stripe being written to. 10773d14c5d2SYehuda Sadeh */ 1078e8afad65SAlex Elder *oxlen = min_t(u64, len, su - su_offset); 10793d14c5d2SYehuda Sadeh 10803d14c5d2SYehuda Sadeh dout(" obj extent %llu~%llu\n", *oxoff, *oxlen); 1081d63b77f4SSage Weil return 0; 1082d63b77f4SSage Weil 1083d63b77f4SSage Weil invalid: 1084d63b77f4SSage Weil dout(" invalid layout\n"); 1085d63b77f4SSage Weil *ono = 0; 1086d63b77f4SSage Weil *oxoff = 0; 1087d63b77f4SSage Weil *oxlen = 0; 1088d63b77f4SSage Weil return -EINVAL; 10893d14c5d2SYehuda Sadeh } 10903d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_calc_file_object_mapping); 10913d14c5d2SYehuda Sadeh 10923d14c5d2SYehuda Sadeh /* 10933d14c5d2SYehuda Sadeh * calculate an object layout (i.e. pgid) from an oid, 10943d14c5d2SYehuda Sadeh * file_layout, and osdmap 10953d14c5d2SYehuda Sadeh */ 109641766f87SAlex Elder int ceph_calc_ceph_pg(struct ceph_pg *pg, const char *oid, 109741766f87SAlex Elder struct ceph_osdmap *osdmap, uint64_t pool) 10983d14c5d2SYehuda Sadeh { 109941766f87SAlex Elder struct ceph_pg_pool_info *pool_info; 11003d14c5d2SYehuda Sadeh 11013d14c5d2SYehuda Sadeh BUG_ON(!osdmap); 110241766f87SAlex Elder pool_info = __lookup_pg_pool(&osdmap->pg_pools, pool); 110341766f87SAlex Elder if (!pool_info) 11043d14c5d2SYehuda Sadeh return -EIO; 110541766f87SAlex Elder pg->pool = pool; 110641766f87SAlex Elder pg->seed = ceph_str_hash(pool_info->object_hash, oid, strlen(oid)); 11073d14c5d2SYehuda Sadeh 110841766f87SAlex Elder dout("%s '%s' pgid %lld.%x\n", __func__, oid, pg->pool, pg->seed); 11093d14c5d2SYehuda Sadeh return 0; 11103d14c5d2SYehuda Sadeh } 111141766f87SAlex Elder EXPORT_SYMBOL(ceph_calc_ceph_pg); 11123d14c5d2SYehuda Sadeh 11133d14c5d2SYehuda Sadeh /* 11143d14c5d2SYehuda Sadeh * Calculate raw osd vector for the given pgid. Return pointer to osd 11153d14c5d2SYehuda Sadeh * array, or NULL on failure. 11163d14c5d2SYehuda Sadeh */ 11175b191d99SSage Weil static int *calc_pg_raw(struct ceph_osdmap *osdmap, struct ceph_pg pgid, 11183d14c5d2SYehuda Sadeh int *osds, int *num) 11193d14c5d2SYehuda Sadeh { 11203d14c5d2SYehuda Sadeh struct ceph_pg_mapping *pg; 11213d14c5d2SYehuda Sadeh struct ceph_pg_pool_info *pool; 11223d14c5d2SYehuda Sadeh int ruleno; 112383ca14fdSSage Weil int r; 112483ca14fdSSage Weil u32 pps; 11253d14c5d2SYehuda Sadeh 112683ca14fdSSage Weil pool = __lookup_pg_pool(&osdmap->pg_pools, pgid.pool); 1127782e182eSSage Weil if (!pool) 1128782e182eSSage Weil return NULL; 1129782e182eSSage Weil 11303d14c5d2SYehuda Sadeh /* pg_temp? */ 113183ca14fdSSage Weil pgid.seed = ceph_stable_mod(pgid.seed, pool->pg_num, 11329542cf0bSSage Weil pool->pg_num_mask); 11333d14c5d2SYehuda Sadeh pg = __lookup_pg_mapping(&osdmap->pg_temp, pgid); 11343d14c5d2SYehuda Sadeh if (pg) { 11353d14c5d2SYehuda Sadeh *num = pg->len; 11363d14c5d2SYehuda Sadeh return pg->osds; 11373d14c5d2SYehuda Sadeh } 11383d14c5d2SYehuda Sadeh 11393d14c5d2SYehuda Sadeh /* crush */ 11404f6a7e5eSSage Weil ruleno = crush_find_rule(osdmap->crush, pool->crush_ruleset, 11414f6a7e5eSSage Weil pool->type, pool->size); 11423d14c5d2SYehuda Sadeh if (ruleno < 0) { 114383ca14fdSSage Weil pr_err("no crush rule pool %lld ruleset %d type %d size %d\n", 114483ca14fdSSage Weil pgid.pool, pool->crush_ruleset, pool->type, 11454f6a7e5eSSage Weil pool->size); 11463d14c5d2SYehuda Sadeh return NULL; 11473d14c5d2SYehuda Sadeh } 11483d14c5d2SYehuda Sadeh 114983ca14fdSSage Weil if (pool->flags & CEPH_POOL_FLAG_HASHPSPOOL) { 115083ca14fdSSage Weil /* hash pool id and seed sothat pool PGs do not overlap */ 115183ca14fdSSage Weil pps = crush_hash32_2(CRUSH_HASH_RJENKINS1, 115283ca14fdSSage Weil ceph_stable_mod(pgid.seed, pool->pgp_num, 115383ca14fdSSage Weil pool->pgp_num_mask), 115483ca14fdSSage Weil pgid.pool); 115583ca14fdSSage Weil } else { 115683ca14fdSSage Weil /* 115783ca14fdSSage Weil * legacy ehavior: add ps and pool together. this is 115883ca14fdSSage Weil * not a great approach because the PGs from each pool 115983ca14fdSSage Weil * will overlap on top of each other: 0.5 == 1.4 == 116083ca14fdSSage Weil * 2.3 == ... 116183ca14fdSSage Weil */ 116283ca14fdSSage Weil pps = ceph_stable_mod(pgid.seed, pool->pgp_num, 116383ca14fdSSage Weil pool->pgp_num_mask) + 116483ca14fdSSage Weil (unsigned)pgid.pool; 116583ca14fdSSage Weil } 11668b393269SSage Weil r = crush_do_rule(osdmap->crush, ruleno, pps, osds, 11674f6a7e5eSSage Weil min_t(int, pool->size, *num), 116841ebcc09SSage Weil osdmap->osd_weight); 11698b393269SSage Weil if (r < 0) { 117083ca14fdSSage Weil pr_err("error %d from crush rule: pool %lld ruleset %d type %d" 117183ca14fdSSage Weil " size %d\n", r, pgid.pool, pool->crush_ruleset, 11724f6a7e5eSSage Weil pool->type, pool->size); 11738b393269SSage Weil return NULL; 11748b393269SSage Weil } 11758b393269SSage Weil *num = r; 11763d14c5d2SYehuda Sadeh return osds; 11773d14c5d2SYehuda Sadeh } 11783d14c5d2SYehuda Sadeh 11793d14c5d2SYehuda Sadeh /* 11803d14c5d2SYehuda Sadeh * Return acting set for given pgid. 11813d14c5d2SYehuda Sadeh */ 11825b191d99SSage Weil int ceph_calc_pg_acting(struct ceph_osdmap *osdmap, struct ceph_pg pgid, 11833d14c5d2SYehuda Sadeh int *acting) 11843d14c5d2SYehuda Sadeh { 11853d14c5d2SYehuda Sadeh int rawosds[CEPH_PG_MAX_SIZE], *osds; 11863d14c5d2SYehuda Sadeh int i, o, num = CEPH_PG_MAX_SIZE; 11873d14c5d2SYehuda Sadeh 11883d14c5d2SYehuda Sadeh osds = calc_pg_raw(osdmap, pgid, rawosds, &num); 11893d14c5d2SYehuda Sadeh if (!osds) 11903d14c5d2SYehuda Sadeh return -1; 11913d14c5d2SYehuda Sadeh 11923d14c5d2SYehuda Sadeh /* primary is first up osd */ 11933d14c5d2SYehuda Sadeh o = 0; 11943d14c5d2SYehuda Sadeh for (i = 0; i < num; i++) 11953d14c5d2SYehuda Sadeh if (ceph_osd_is_up(osdmap, osds[i])) 11963d14c5d2SYehuda Sadeh acting[o++] = osds[i]; 11973d14c5d2SYehuda Sadeh return o; 11983d14c5d2SYehuda Sadeh } 11993d14c5d2SYehuda Sadeh 12003d14c5d2SYehuda Sadeh /* 12013d14c5d2SYehuda Sadeh * Return primary osd for given pgid, or -1 if none. 12023d14c5d2SYehuda Sadeh */ 12035b191d99SSage Weil int ceph_calc_pg_primary(struct ceph_osdmap *osdmap, struct ceph_pg pgid) 12043d14c5d2SYehuda Sadeh { 12053d14c5d2SYehuda Sadeh int rawosds[CEPH_PG_MAX_SIZE], *osds; 12063d14c5d2SYehuda Sadeh int i, num = CEPH_PG_MAX_SIZE; 12073d14c5d2SYehuda Sadeh 12083d14c5d2SYehuda Sadeh osds = calc_pg_raw(osdmap, pgid, rawosds, &num); 12093d14c5d2SYehuda Sadeh if (!osds) 12103d14c5d2SYehuda Sadeh return -1; 12113d14c5d2SYehuda Sadeh 12123d14c5d2SYehuda Sadeh /* primary is first up osd */ 12133d14c5d2SYehuda Sadeh for (i = 0; i < num; i++) 12143d14c5d2SYehuda Sadeh if (ceph_osd_is_up(osdmap, osds[i])) 12153d14c5d2SYehuda Sadeh return osds[i]; 12163d14c5d2SYehuda Sadeh return -1; 12173d14c5d2SYehuda Sadeh } 12183d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_calc_pg_primary); 1219