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net/ceph/osdmap.c
26.9 KB
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#include <linux/ceph/ceph_debug.h> |
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#include <linux/module.h> |
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#include <linux/slab.h> |
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#include <asm/div64.h> |
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#include <linux/ceph/libceph.h> #include <linux/ceph/osdmap.h> #include <linux/ceph/decode.h> #include <linux/crush/hash.h> #include <linux/crush/mapper.h> |
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char *ceph_osdmap_state_str(char *str, int len, int state) { int flag = 0; if (!len) goto done; *str = '\0'; if (state) { if (state & CEPH_OSD_EXISTS) { snprintf(str, len, "exists"); flag = 1; } if (state & CEPH_OSD_UP) { snprintf(str, len, "%s%s%s", str, (flag ? ", " : ""), "up"); flag = 1; } } else { snprintf(str, len, "doesn't exist"); } done: return str; } /* maps */ static int calc_bits_of(unsigned t) { int b = 0; while (t) { t = t >> 1; b++; } return b; } /* * the foo_mask is the smallest value 2^n-1 that is >= foo. */ static void calc_pg_masks(struct ceph_pg_pool_info *pi) { pi->pg_num_mask = (1 << calc_bits_of(le32_to_cpu(pi->v.pg_num)-1)) - 1; pi->pgp_num_mask = (1 << calc_bits_of(le32_to_cpu(pi->v.pgp_num)-1)) - 1; pi->lpg_num_mask = (1 << calc_bits_of(le32_to_cpu(pi->v.lpg_num)-1)) - 1; pi->lpgp_num_mask = (1 << calc_bits_of(le32_to_cpu(pi->v.lpgp_num)-1)) - 1; } /* * decode crush map */ static int crush_decode_uniform_bucket(void **p, void *end, struct crush_bucket_uniform *b) { dout("crush_decode_uniform_bucket %p to %p ", *p, end); ceph_decode_need(p, end, (1+b->h.size) * sizeof(u32), bad); |
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b->item_weight = ceph_decode_32(p); |
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return 0; bad: return -EINVAL; } static int crush_decode_list_bucket(void **p, void *end, struct crush_bucket_list *b) { int j; dout("crush_decode_list_bucket %p to %p ", *p, end); b->item_weights = kcalloc(b->h.size, sizeof(u32), GFP_NOFS); if (b->item_weights == NULL) return -ENOMEM; b->sum_weights = kcalloc(b->h.size, sizeof(u32), GFP_NOFS); if (b->sum_weights == NULL) return -ENOMEM; ceph_decode_need(p, end, 2 * b->h.size * sizeof(u32), bad); for (j = 0; j < b->h.size; j++) { |
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b->item_weights[j] = ceph_decode_32(p); b->sum_weights[j] = ceph_decode_32(p); |
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} return 0; bad: return -EINVAL; } static int crush_decode_tree_bucket(void **p, void *end, struct crush_bucket_tree *b) { int j; dout("crush_decode_tree_bucket %p to %p ", *p, end); ceph_decode_32_safe(p, end, b->num_nodes, bad); b->node_weights = kcalloc(b->num_nodes, sizeof(u32), GFP_NOFS); if (b->node_weights == NULL) return -ENOMEM; ceph_decode_need(p, end, b->num_nodes * sizeof(u32), bad); for (j = 0; j < b->num_nodes; j++) |
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b->node_weights[j] = ceph_decode_32(p); |
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return 0; bad: return -EINVAL; } static int crush_decode_straw_bucket(void **p, void *end, struct crush_bucket_straw *b) { int j; dout("crush_decode_straw_bucket %p to %p ", *p, end); b->item_weights = kcalloc(b->h.size, sizeof(u32), GFP_NOFS); if (b->item_weights == NULL) return -ENOMEM; b->straws = kcalloc(b->h.size, sizeof(u32), GFP_NOFS); if (b->straws == NULL) return -ENOMEM; ceph_decode_need(p, end, 2 * b->h.size * sizeof(u32), bad); for (j = 0; j < b->h.size; j++) { |
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b->item_weights[j] = ceph_decode_32(p); b->straws[j] = ceph_decode_32(p); |
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} return 0; bad: return -EINVAL; } static struct crush_map *crush_decode(void *pbyval, void *end) { struct crush_map *c; int err = -EINVAL; int i, j; void **p = &pbyval; void *start = pbyval; u32 magic; dout("crush_decode %p to %p len %d ", *p, end, (int)(end - *p)); c = kzalloc(sizeof(*c), GFP_NOFS); if (c == NULL) return ERR_PTR(-ENOMEM); ceph_decode_need(p, end, 4*sizeof(u32), bad); |
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magic = ceph_decode_32(p); |
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if (magic != CRUSH_MAGIC) { pr_err("crush_decode magic %x != current %x ", (unsigned)magic, (unsigned)CRUSH_MAGIC); goto bad; } |
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c->max_buckets = ceph_decode_32(p); c->max_rules = ceph_decode_32(p); c->max_devices = ceph_decode_32(p); |
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c->device_parents = kcalloc(c->max_devices, sizeof(u32), GFP_NOFS); if (c->device_parents == NULL) goto badmem; c->bucket_parents = kcalloc(c->max_buckets, sizeof(u32), GFP_NOFS); if (c->bucket_parents == NULL) goto badmem; c->buckets = kcalloc(c->max_buckets, sizeof(*c->buckets), GFP_NOFS); if (c->buckets == NULL) goto badmem; c->rules = kcalloc(c->max_rules, sizeof(*c->rules), GFP_NOFS); if (c->rules == NULL) goto badmem; /* buckets */ for (i = 0; i < c->max_buckets; i++) { int size = 0; u32 alg; struct crush_bucket *b; ceph_decode_32_safe(p, end, alg, bad); if (alg == 0) { c->buckets[i] = NULL; continue; } dout("crush_decode bucket %d off %x %p to %p ", i, (int)(*p-start), *p, end); switch (alg) { case CRUSH_BUCKET_UNIFORM: size = sizeof(struct crush_bucket_uniform); break; case CRUSH_BUCKET_LIST: size = sizeof(struct crush_bucket_list); break; case CRUSH_BUCKET_TREE: size = sizeof(struct crush_bucket_tree); break; case CRUSH_BUCKET_STRAW: size = sizeof(struct crush_bucket_straw); break; default: |
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err = -EINVAL; |
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goto bad; } BUG_ON(size == 0); b = c->buckets[i] = kzalloc(size, GFP_NOFS); if (b == NULL) goto badmem; ceph_decode_need(p, end, 4*sizeof(u32), bad); |
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b->id = ceph_decode_32(p); b->type = ceph_decode_16(p); |
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b->alg = ceph_decode_8(p); b->hash = ceph_decode_8(p); |
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b->weight = ceph_decode_32(p); b->size = ceph_decode_32(p); |
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dout("crush_decode bucket size %d off %x %p to %p ", b->size, (int)(*p-start), *p, end); b->items = kcalloc(b->size, sizeof(__s32), GFP_NOFS); if (b->items == NULL) goto badmem; b->perm = kcalloc(b->size, sizeof(u32), GFP_NOFS); if (b->perm == NULL) goto badmem; b->perm_n = 0; ceph_decode_need(p, end, b->size*sizeof(u32), bad); for (j = 0; j < b->size; j++) |
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b->items[j] = ceph_decode_32(p); |
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switch (b->alg) { case CRUSH_BUCKET_UNIFORM: err = crush_decode_uniform_bucket(p, end, (struct crush_bucket_uniform *)b); if (err < 0) goto bad; break; case CRUSH_BUCKET_LIST: err = crush_decode_list_bucket(p, end, (struct crush_bucket_list *)b); if (err < 0) goto bad; break; case CRUSH_BUCKET_TREE: err = crush_decode_tree_bucket(p, end, (struct crush_bucket_tree *)b); if (err < 0) goto bad; break; case CRUSH_BUCKET_STRAW: err = crush_decode_straw_bucket(p, end, (struct crush_bucket_straw *)b); if (err < 0) goto bad; break; } } /* rules */ dout("rule vec is %p ", c->rules); for (i = 0; i < c->max_rules; i++) { u32 yes; struct crush_rule *r; ceph_decode_32_safe(p, end, yes, bad); if (!yes) { dout("crush_decode NO rule %d off %x %p to %p ", i, (int)(*p-start), *p, end); c->rules[i] = NULL; continue; } dout("crush_decode rule %d off %x %p to %p ", i, (int)(*p-start), *p, end); /* len */ ceph_decode_32_safe(p, end, yes, bad); #if BITS_PER_LONG == 32 |
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err = -EINVAL; |
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if (yes > ULONG_MAX / sizeof(struct crush_rule_step)) goto bad; #endif r = c->rules[i] = kmalloc(sizeof(*r) + yes*sizeof(struct crush_rule_step), GFP_NOFS); if (r == NULL) goto badmem; dout(" rule %d is at %p ", i, r); r->len = yes; ceph_decode_copy_safe(p, end, &r->mask, 4, bad); /* 4 u8's */ ceph_decode_need(p, end, r->len*3*sizeof(u32), bad); for (j = 0; j < r->len; j++) { |
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r->steps[j].op = ceph_decode_32(p); r->steps[j].arg1 = ceph_decode_32(p); r->steps[j].arg2 = ceph_decode_32(p); |
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} } /* ignore trailing name maps. */ dout("crush_decode success "); return c; badmem: err = -ENOMEM; bad: dout("crush_decode fail %d ", err); crush_destroy(c); return ERR_PTR(err); } |
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/* |
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* rbtree of pg_mapping for handling pg_temp (explicit mapping of pgid * to a set of osds) |
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*/ |
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static int pgid_cmp(struct ceph_pg l, struct ceph_pg r) { u64 a = *(u64 *)&l; u64 b = *(u64 *)&r; if (a < b) return -1; if (a > b) return 1; return 0; } |
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static int __insert_pg_mapping(struct ceph_pg_mapping *new, struct rb_root *root) |
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{ struct rb_node **p = &root->rb_node; struct rb_node *parent = NULL; struct ceph_pg_mapping *pg = NULL; |
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int c; |
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dout("__insert_pg_mapping %llx %p ", *(u64 *)&new->pgid, new); |
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while (*p) { parent = *p; pg = rb_entry(parent, struct ceph_pg_mapping, node); |
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c = pgid_cmp(new->pgid, pg->pgid); if (c < 0) |
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p = &(*p)->rb_left; |
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else if (c > 0) |
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p = &(*p)->rb_right; else |
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return -EEXIST; |
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} rb_link_node(&new->node, parent, p); rb_insert_color(&new->node, root); |
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return 0; |
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} |
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static struct ceph_pg_mapping *__lookup_pg_mapping(struct rb_root *root, struct ceph_pg pgid) { struct rb_node *n = root->rb_node; struct ceph_pg_mapping *pg; int c; while (n) { pg = rb_entry(n, struct ceph_pg_mapping, node); c = pgid_cmp(pgid, pg->pgid); |
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if (c < 0) { |
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n = n->rb_left; |
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} else if (c > 0) { |
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n = n->rb_right; |
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} else { dout("__lookup_pg_mapping %llx got %p ", *(u64 *)&pgid, pg); |
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return pg; |
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} |
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} return NULL; } |
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static int __remove_pg_mapping(struct rb_root *root, struct ceph_pg pgid) { struct ceph_pg_mapping *pg = __lookup_pg_mapping(root, pgid); if (pg) { dout("__remove_pg_mapping %llx %p ", *(u64 *)&pgid, pg); rb_erase(&pg->node, root); kfree(pg); return 0; } dout("__remove_pg_mapping %llx dne ", *(u64 *)&pgid); return -ENOENT; } |
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/* |
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* rbtree of pg pool info */ static int __insert_pg_pool(struct rb_root *root, struct ceph_pg_pool_info *new) { struct rb_node **p = &root->rb_node; struct rb_node *parent = NULL; struct ceph_pg_pool_info *pi = NULL; while (*p) { parent = *p; pi = rb_entry(parent, struct ceph_pg_pool_info, node); if (new->id < pi->id) p = &(*p)->rb_left; else if (new->id > pi->id) p = &(*p)->rb_right; else return -EEXIST; } rb_link_node(&new->node, parent, p); rb_insert_color(&new->node, root); return 0; } static struct ceph_pg_pool_info *__lookup_pg_pool(struct rb_root *root, int id) { struct ceph_pg_pool_info *pi; struct rb_node *n = root->rb_node; while (n) { pi = rb_entry(n, struct ceph_pg_pool_info, node); if (id < pi->id) n = n->rb_left; else if (id > pi->id) n = n->rb_right; else return pi; } return NULL; } |
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int ceph_pg_poolid_by_name(struct ceph_osdmap *map, const char *name) { struct rb_node *rbp; for (rbp = rb_first(&map->pg_pools); rbp; rbp = rb_next(rbp)) { struct ceph_pg_pool_info *pi = rb_entry(rbp, struct ceph_pg_pool_info, node); if (pi->name && strcmp(pi->name, name) == 0) return pi->id; } return -ENOENT; } |
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EXPORT_SYMBOL(ceph_pg_poolid_by_name); |
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static void __remove_pg_pool(struct rb_root *root, struct ceph_pg_pool_info *pi) { rb_erase(&pi->node, root); kfree(pi->name); kfree(pi); } |
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static int __decode_pool(void **p, void *end, struct ceph_pg_pool_info *pi) |
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{ |
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unsigned n, m; |
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ceph_decode_copy(p, &pi->v, sizeof(pi->v)); calc_pg_masks(pi); |
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/* num_snaps * snap_info_t */ n = le32_to_cpu(pi->v.num_snaps); while (n--) { ceph_decode_need(p, end, sizeof(u64) + 1 + sizeof(u64) + sizeof(struct ceph_timespec), bad); *p += sizeof(u64) + /* key */ 1 + sizeof(u64) + /* u8, snapid */ sizeof(struct ceph_timespec); m = ceph_decode_32(p); /* snap name */ *p += m; } |
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*p += le32_to_cpu(pi->v.num_removed_snap_intervals) * sizeof(u64) * 2; |
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return 0; bad: return -EINVAL; |
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} |
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static int __decode_pool_names(void **p, void *end, struct ceph_osdmap *map) { struct ceph_pg_pool_info *pi; u32 num, len, pool; ceph_decode_32_safe(p, end, num, bad); dout(" %d pool names ", num); while (num--) { ceph_decode_32_safe(p, end, pool, bad); ceph_decode_32_safe(p, end, len, bad); dout(" pool %d len %d ", pool, len); pi = __lookup_pg_pool(&map->pg_pools, pool); if (pi) { kfree(pi->name); pi->name = kmalloc(len + 1, GFP_NOFS); if (pi->name) { memcpy(pi->name, *p, len); pi->name[len] = '\0'; dout(" name is %s ", pi->name); } } *p += len; } return 0; bad: return -EINVAL; } /* * osd map */ void ceph_osdmap_destroy(struct ceph_osdmap *map) { dout("osdmap_destroy %p ", map); if (map->crush) crush_destroy(map->crush); while (!RB_EMPTY_ROOT(&map->pg_temp)) { struct ceph_pg_mapping *pg = rb_entry(rb_first(&map->pg_temp), struct ceph_pg_mapping, node); rb_erase(&pg->node, &map->pg_temp); kfree(pg); } while (!RB_EMPTY_ROOT(&map->pg_pools)) { struct ceph_pg_pool_info *pi = rb_entry(rb_first(&map->pg_pools), struct ceph_pg_pool_info, node); __remove_pg_pool(&map->pg_pools, pi); } kfree(map->osd_state); kfree(map->osd_weight); kfree(map->osd_addr); kfree(map); } /* * adjust max osd value. reallocate arrays. */ static int osdmap_set_max_osd(struct ceph_osdmap *map, int max) { u8 *state; struct ceph_entity_addr *addr; u32 *weight; state = kcalloc(max, sizeof(*state), GFP_NOFS); addr = kcalloc(max, sizeof(*addr), GFP_NOFS); weight = kcalloc(max, sizeof(*weight), GFP_NOFS); if (state == NULL || addr == NULL || weight == NULL) { kfree(state); kfree(addr); kfree(weight); return -ENOMEM; } /* copy old? */ if (map->osd_state) { memcpy(state, map->osd_state, map->max_osd*sizeof(*state)); memcpy(addr, map->osd_addr, map->max_osd*sizeof(*addr)); memcpy(weight, map->osd_weight, map->max_osd*sizeof(*weight)); kfree(map->osd_state); kfree(map->osd_addr); kfree(map->osd_weight); } map->osd_state = state; map->osd_weight = weight; map->osd_addr = addr; map->max_osd = max; return 0; } |
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/* |
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* decode a full map. */ struct ceph_osdmap *osdmap_decode(void **p, void *end) { struct ceph_osdmap *map; u16 version; u32 len, max, i; |
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u8 ev; |
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int err = -EINVAL; void *start = *p; |
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struct ceph_pg_pool_info *pi; |
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dout("osdmap_decode %p to %p len %d ", *p, end, (int)(end - *p)); map = kzalloc(sizeof(*map), GFP_NOFS); if (map == NULL) return ERR_PTR(-ENOMEM); map->pg_temp = RB_ROOT; ceph_decode_16_safe(p, end, version, bad); |
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if (version > CEPH_OSDMAP_VERSION) { pr_warning("got unknown v %d > %d of osdmap ", version, CEPH_OSDMAP_VERSION); goto bad; } |
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ceph_decode_need(p, end, 2*sizeof(u64)+6*sizeof(u32), bad); ceph_decode_copy(p, &map->fsid, sizeof(map->fsid)); |
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map->epoch = ceph_decode_32(p); |
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ceph_decode_copy(p, &map->created, sizeof(map->created)); ceph_decode_copy(p, &map->modified, sizeof(map->modified)); |
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ceph_decode_32_safe(p, end, max, bad); while (max--) { |
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ceph_decode_need(p, end, 4 + 1 + sizeof(pi->v), bad); |
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pi = kzalloc(sizeof(*pi), GFP_NOFS); |
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if (!pi) |
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goto bad; |
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pi->id = ceph_decode_32(p); |
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ev = ceph_decode_8(p); /* encoding version */ |
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if (ev > CEPH_PG_POOL_VERSION) { pr_warning("got unknown v %d > %d of ceph_pg_pool ", ev, CEPH_PG_POOL_VERSION); |
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kfree(pi); |
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goto bad; } |
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err = __decode_pool(p, end, pi); |
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638 639 |
if (err < 0) { kfree(pi); |
73a7e693f ceph: fix decodin... |
640 |
goto bad; |
b0aee3516 ceph: Always free... |
641 |
} |
4fc51be8f ceph: use rbtree ... |
642 |
__insert_pg_pool(&map->pg_pools, pi); |
f24e9980e ceph: OSD client |
643 |
} |
2844a76a2 ceph: decode v5 o... |
644 645 646 |
if (version >= 5 && __decode_pool_names(p, end, map) < 0) goto bad; |
4fc51be8f ceph: use rbtree ... |
647 |
ceph_decode_32_safe(p, end, map->pool_max, bad); |
f24e9980e ceph: OSD client |
648 649 |
ceph_decode_32_safe(p, end, map->flags, bad); |
c89136ea4 ceph: convert enc... |
650 |
max = ceph_decode_32(p); |
f24e9980e ceph: OSD client |
651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 |
/* (re)alloc osd arrays */ err = osdmap_set_max_osd(map, max); if (err < 0) goto bad; dout("osdmap_decode max_osd = %d ", map->max_osd); /* osds */ err = -EINVAL; ceph_decode_need(p, end, 3*sizeof(u32) + map->max_osd*(1 + sizeof(*map->osd_weight) + sizeof(*map->osd_addr)), bad); *p += 4; /* skip length field (should match max) */ ceph_decode_copy(p, map->osd_state, map->max_osd); *p += 4; /* skip length field (should match max) */ for (i = 0; i < map->max_osd; i++) |
c89136ea4 ceph: convert enc... |
669 |
map->osd_weight[i] = ceph_decode_32(p); |
f24e9980e ceph: OSD client |
670 671 672 |
*p += 4; /* skip length field (should match max) */ ceph_decode_copy(p, map->osd_addr, map->max_osd*sizeof(*map->osd_addr)); |
63f2d2119 ceph: use fixed e... |
673 674 |
for (i = 0; i < map->max_osd; i++) ceph_decode_addr(&map->osd_addr[i]); |
f24e9980e ceph: OSD client |
675 676 677 678 679 |
/* pg_temp */ ceph_decode_32_safe(p, end, len, bad); for (i = 0; i < len; i++) { int n, j; |
51042122d ceph: fix endian ... |
680 |
struct ceph_pg pgid; |
f24e9980e ceph: OSD client |
681 682 683 |
struct ceph_pg_mapping *pg; ceph_decode_need(p, end, sizeof(u32) + sizeof(u64), bad); |
51042122d ceph: fix endian ... |
684 |
ceph_decode_copy(p, &pgid, sizeof(pgid)); |
c89136ea4 ceph: convert enc... |
685 |
n = ceph_decode_32(p); |
f24e9980e ceph: OSD client |
686 |
ceph_decode_need(p, end, n * sizeof(u32), bad); |
30dc6381b ceph: fix error p... |
687 |
err = -ENOMEM; |
f24e9980e ceph: OSD client |
688 |
pg = kmalloc(sizeof(*pg) + n*sizeof(u32), GFP_NOFS); |
30dc6381b ceph: fix error p... |
689 |
if (!pg) |
f24e9980e ceph: OSD client |
690 |
goto bad; |
f24e9980e ceph: OSD client |
691 692 693 |
pg->pgid = pgid; pg->len = n; for (j = 0; j < n; j++) |
c89136ea4 ceph: convert enc... |
694 |
pg->osds[j] = ceph_decode_32(p); |
f24e9980e ceph: OSD client |
695 |
|
991abb6ec ceph: fail gracef... |
696 697 698 |
err = __insert_pg_mapping(pg, &map->pg_temp); if (err) goto bad; |
51042122d ceph: fix endian ... |
699 700 |
dout(" added pg_temp %llx len %d ", *(u64 *)&pgid, len); |
f24e9980e ceph: OSD client |
701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 |
} /* crush */ ceph_decode_32_safe(p, end, len, bad); dout("osdmap_decode crush len %d from off 0x%x ", len, (int)(*p - start)); ceph_decode_need(p, end, len, bad); map->crush = crush_decode(*p, end); *p += len; if (IS_ERR(map->crush)) { err = PTR_ERR(map->crush); map->crush = NULL; goto bad; } /* ignore the rest of the map */ *p = end; dout("osdmap_decode done %p %p ", *p, end); return map; bad: dout("osdmap_decode fail "); ceph_osdmap_destroy(map); return ERR_PTR(err); } /* * decode and apply an incremental map update. */ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end, struct ceph_osdmap *map, struct ceph_messenger *msgr) { |
f24e9980e ceph: OSD client |
738 739 740 741 742 |
struct crush_map *newcrush = NULL; struct ceph_fsid fsid; u32 epoch = 0; struct ceph_timespec modified; u32 len, pool; |
4fc51be8f ceph: use rbtree ... |
743 |
__s32 new_pool_max, new_flags, max; |
f24e9980e ceph: OSD client |
744 745 746 |
void *start = *p; int err = -EINVAL; u16 version; |
f24e9980e ceph: OSD client |
747 748 |
ceph_decode_16_safe(p, end, version, bad); |
02f90c610 ceph: add uid fie... |
749 750 751 752 753 754 |
if (version > CEPH_OSDMAP_INC_VERSION) { pr_warning("got unknown v %d > %d of inc osdmap ", version, CEPH_OSDMAP_INC_VERSION); goto bad; } |
f24e9980e ceph: OSD client |
755 756 757 758 |
ceph_decode_need(p, end, sizeof(fsid)+sizeof(modified)+2*sizeof(u32), bad); ceph_decode_copy(p, &fsid, sizeof(fsid)); |
c89136ea4 ceph: convert enc... |
759 |
epoch = ceph_decode_32(p); |
f24e9980e ceph: OSD client |
760 761 |
BUG_ON(epoch != map->epoch+1); ceph_decode_copy(p, &modified, sizeof(modified)); |
4fc51be8f ceph: use rbtree ... |
762 |
new_pool_max = ceph_decode_32(p); |
c89136ea4 ceph: convert enc... |
763 |
new_flags = ceph_decode_32(p); |
f24e9980e ceph: OSD client |
764 765 766 767 768 769 770 |
/* full map? */ ceph_decode_32_safe(p, end, len, bad); if (len > 0) { dout("apply_incremental full map len %d, %p to %p ", len, *p, end); |
30dc6381b ceph: fix error p... |
771 |
return osdmap_decode(p, min(*p+len, end)); |
f24e9980e ceph: OSD client |
772 773 774 775 776 777 778 779 780 781 |
} /* new crush? */ ceph_decode_32_safe(p, end, len, bad); if (len > 0) { dout("apply_incremental new crush map len %d, %p to %p ", len, *p, end); newcrush = crush_decode(*p, min(*p+len, end)); if (IS_ERR(newcrush)) |
7e34bc524 fs/ceph: Use ERR_... |
782 |
return ERR_CAST(newcrush); |
cebc5be6b ceph: fix crush m... |
783 |
*p += len; |
f24e9980e ceph: OSD client |
784 785 786 787 788 |
} /* new flags? */ if (new_flags >= 0) map->flags = new_flags; |
4fc51be8f ceph: use rbtree ... |
789 790 |
if (new_pool_max >= 0) map->pool_max = new_pool_max; |
f24e9980e ceph: OSD client |
791 792 793 794 |
ceph_decode_need(p, end, 5*sizeof(u32), bad); /* new max? */ |
c89136ea4 ceph: convert enc... |
795 |
max = ceph_decode_32(p); |
f24e9980e ceph: OSD client |
796 797 798 799 800 801 802 |
if (max >= 0) { err = osdmap_set_max_osd(map, max); if (err < 0) goto bad; } map->epoch++; |
31456665a libceph: fix osdm... |
803 |
map->modified = modified; |
f24e9980e ceph: OSD client |
804 805 806 807 808 809 810 811 812 813 |
if (newcrush) { if (map->crush) crush_destroy(map->crush); map->crush = newcrush; newcrush = NULL; } /* new_pool */ ceph_decode_32_safe(p, end, len, bad); while (len--) { |
361be8601 ceph: precede enc... |
814 |
__u8 ev; |
4fc51be8f ceph: use rbtree ... |
815 |
struct ceph_pg_pool_info *pi; |
361be8601 ceph: precede enc... |
816 |
|
f24e9980e ceph: OSD client |
817 |
ceph_decode_32_safe(p, end, pool, bad); |
4fc51be8f ceph: use rbtree ... |
818 |
ceph_decode_need(p, end, 1 + sizeof(pi->v), bad); |
361be8601 ceph: precede enc... |
819 |
ev = ceph_decode_8(p); /* encoding version */ |
02f90c610 ceph: add uid fie... |
820 821 822 823 824 825 |
if (ev > CEPH_PG_POOL_VERSION) { pr_warning("got unknown v %d > %d of ceph_pg_pool ", ev, CEPH_PG_POOL_VERSION); goto bad; } |
4fc51be8f ceph: use rbtree ... |
826 827 |
pi = __lookup_pg_pool(&map->pg_pools, pool); if (!pi) { |
2844a76a2 ceph: decode v5 o... |
828 |
pi = kzalloc(sizeof(*pi), GFP_NOFS); |
4fc51be8f ceph: use rbtree ... |
829 830 831 832 833 834 835 |
if (!pi) { err = -ENOMEM; goto bad; } pi->id = pool; __insert_pg_pool(&map->pg_pools, pi); } |
73a7e693f ceph: fix decodin... |
836 837 838 |
err = __decode_pool(p, end, pi); if (err < 0) goto bad; |
f24e9980e ceph: OSD client |
839 |
} |
2844a76a2 ceph: decode v5 o... |
840 841 |
if (version >= 5 && __decode_pool_names(p, end, map) < 0) goto bad; |
f24e9980e ceph: OSD client |
842 |
|
4fc51be8f ceph: use rbtree ... |
843 |
/* old_pool */ |
f24e9980e ceph: OSD client |
844 |
ceph_decode_32_safe(p, end, len, bad); |
4fc51be8f ceph: use rbtree ... |
845 846 847 848 849 |
while (len--) { struct ceph_pg_pool_info *pi; ceph_decode_32_safe(p, end, pool, bad); pi = __lookup_pg_pool(&map->pg_pools, pool); |
2844a76a2 ceph: decode v5 o... |
850 851 |
if (pi) __remove_pg_pool(&map->pg_pools, pi); |
4fc51be8f ceph: use rbtree ... |
852 |
} |
f24e9980e ceph: OSD client |
853 854 855 856 857 858 859 860 861 |
/* new_up */ err = -EINVAL; ceph_decode_32_safe(p, end, len, bad); while (len--) { u32 osd; struct ceph_entity_addr addr; ceph_decode_32_safe(p, end, osd, bad); ceph_decode_copy_safe(p, end, &addr, sizeof(addr), bad); |
63f2d2119 ceph: use fixed e... |
862 |
ceph_decode_addr(&addr); |
f24e9980e ceph: OSD client |
863 864 865 866 867 868 |
pr_info("osd%d up ", osd); BUG_ON(osd >= map->max_osd); map->osd_state[osd] |= CEPH_OSD_UP; map->osd_addr[osd] = addr; } |
7662d8ff5 libceph: handle n... |
869 |
/* new_state */ |
f24e9980e ceph: OSD client |
870 871 872 |
ceph_decode_32_safe(p, end, len, bad); while (len--) { u32 osd; |
7662d8ff5 libceph: handle n... |
873 |
u8 xorstate; |
f24e9980e ceph: OSD client |
874 |
ceph_decode_32_safe(p, end, osd, bad); |
7662d8ff5 libceph: handle n... |
875 |
xorstate = **(u8 **)p; |
f24e9980e ceph: OSD client |
876 |
(*p)++; /* clean flag */ |
7662d8ff5 libceph: handle n... |
877 878 879 880 881 |
if (xorstate == 0) xorstate = CEPH_OSD_UP; if (xorstate & CEPH_OSD_UP) pr_info("osd%d down ", osd); |
f24e9980e ceph: OSD client |
882 |
if (osd < map->max_osd) |
7662d8ff5 libceph: handle n... |
883 |
map->osd_state[osd] ^= xorstate; |
f24e9980e ceph: OSD client |
884 885 886 887 888 889 890 |
} /* new_weight */ ceph_decode_32_safe(p, end, len, bad); while (len--) { u32 osd, off; ceph_decode_need(p, end, sizeof(u32)*2, bad); |
c89136ea4 ceph: convert enc... |
891 892 |
osd = ceph_decode_32(p); off = ceph_decode_32(p); |
f24e9980e ceph: OSD client |
893 894 895 896 897 898 899 900 901 |
pr_info("osd%d weight 0x%x %s ", osd, off, off == CEPH_OSD_IN ? "(in)" : (off == CEPH_OSD_OUT ? "(out)" : "")); if (osd < map->max_osd) map->osd_weight[osd] = off; } /* new_pg_temp */ |
f24e9980e ceph: OSD client |
902 903 904 905 |
ceph_decode_32_safe(p, end, len, bad); while (len--) { struct ceph_pg_mapping *pg; int j; |
51042122d ceph: fix endian ... |
906 |
struct ceph_pg pgid; |
f24e9980e ceph: OSD client |
907 908 |
u32 pglen; ceph_decode_need(p, end, sizeof(u64) + sizeof(u32), bad); |
51042122d ceph: fix endian ... |
909 |
ceph_decode_copy(p, &pgid, sizeof(pgid)); |
c89136ea4 ceph: convert enc... |
910 |
pglen = ceph_decode_32(p); |
f24e9980e ceph: OSD client |
911 |
|
f24e9980e ceph: OSD client |
912 913 914 915 916 917 918 919 920 921 |
if (pglen) { /* insert */ ceph_decode_need(p, end, pglen*sizeof(u32), bad); pg = kmalloc(sizeof(*pg) + sizeof(u32)*pglen, GFP_NOFS); if (!pg) { err = -ENOMEM; goto bad; } pg->pgid = pgid; pg->len = pglen; |
7067f797b ceph: fix increme... |
922 |
for (j = 0; j < pglen; j++) |
c89136ea4 ceph: convert enc... |
923 |
pg->osds[j] = ceph_decode_32(p); |
991abb6ec ceph: fail gracef... |
924 |
err = __insert_pg_mapping(pg, &map->pg_temp); |
bc4fdca85 ceph: fix pg_mapp... |
925 926 |
if (err) { kfree(pg); |
991abb6ec ceph: fail gracef... |
927 |
goto bad; |
bc4fdca85 ceph: fix pg_mapp... |
928 |
} |
51042122d ceph: fix endian ... |
929 930 931 |
dout(" added pg_temp %llx len %d ", *(u64 *)&pgid, pglen); |
8adc8b3d7 libceph: fix pg_t... |
932 933 934 |
} else { /* remove */ __remove_pg_mapping(&map->pg_temp, pgid); |
f24e9980e ceph: OSD client |
935 936 |
} } |
f24e9980e ceph: OSD client |
937 938 939 940 941 942 943 944 945 |
/* ignore the rest */ *p = end; return map; bad: pr_err("corrupt inc osdmap epoch %d off %d (%p of %p-%p) ", epoch, (int)(*p - start), *p, start, end); |
9ec7cab14 ceph: hex dump co... |
946 947 948 |
print_hex_dump(KERN_DEBUG, "osdmap: ", DUMP_PREFIX_OFFSET, 16, 1, start, end - start, true); |
f24e9980e ceph: OSD client |
949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 |
if (newcrush) crush_destroy(newcrush); return ERR_PTR(err); } /* * calculate file layout from given offset, length. * fill in correct oid, logical length, and object extent * offset, length. * * for now, we write only a single su, until we can * pass a stride back to the caller. */ void ceph_calc_file_object_mapping(struct ceph_file_layout *layout, u64 off, u64 *plen, |
645a10258 ceph: fix object ... |
967 |
u64 *ono, |
f24e9980e ceph: OSD client |
968 969 970 971 972 973 974 |
u64 *oxoff, u64 *oxlen) { u32 osize = le32_to_cpu(layout->fl_object_size); u32 su = le32_to_cpu(layout->fl_stripe_unit); u32 sc = le32_to_cpu(layout->fl_stripe_count); u32 bl, stripeno, stripepos, objsetno; u32 su_per_object; |
ff1d1f717 ceph: fix intra s... |
975 |
u64 t, su_offset; |
f24e9980e ceph: OSD client |
976 977 978 979 |
dout("mapping %llu~%llu osize %u fl_su %u ", off, *plen, osize, su); |
35e054a66 ceph: remove redu... |
980 |
su_per_object = osize / su; |
f24e9980e ceph: OSD client |
981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 |
dout("osize %u / su %u = su_per_object %u ", osize, su, su_per_object); BUG_ON((su & ~PAGE_MASK) != 0); /* bl = *off / su; */ t = off; do_div(t, su); bl = t; dout("off %llu / su %u = bl %u ", off, su, bl); stripeno = bl / sc; stripepos = bl % sc; objsetno = stripeno / su_per_object; |
645a10258 ceph: fix object ... |
996 997 998 999 1000 |
*ono = objsetno * sc + stripepos; dout("objset %u * sc %u = ono %u ", objsetno, sc, (unsigned)*ono); /* *oxoff = *off % layout->fl_stripe_unit; # offset in su */ |
f24e9980e ceph: OSD client |
1001 |
t = off; |
ff1d1f717 ceph: fix intra s... |
1002 1003 1004 1005 1006 1007 1008 1009 1010 |
su_offset = do_div(t, su); *oxoff = su_offset + (stripeno % su_per_object) * su; /* * Calculate the length of the extent being written to the selected * object. This is the minimum of the full length requested (plen) or * the remainder of the current stripe being written to. */ *oxlen = min_t(u64, *plen, su - su_offset); |
f24e9980e ceph: OSD client |
1011 1012 1013 1014 1015 |
*plen = *oxlen; dout(" obj extent %llu~%llu ", *oxoff, *oxlen); } |
3d14c5d2b ceph: factor out ... |
1016 |
EXPORT_SYMBOL(ceph_calc_file_object_mapping); |
f24e9980e ceph: OSD client |
1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 |
/* * calculate an object layout (i.e. pgid) from an oid, * file_layout, and osdmap */ int ceph_calc_object_layout(struct ceph_object_layout *ol, const char *oid, struct ceph_file_layout *fl, struct ceph_osdmap *osdmap) { unsigned num, num_mask; |
51042122d ceph: fix endian ... |
1028 |
struct ceph_pg pgid; |
f24e9980e ceph: OSD client |
1029 1030 1031 |
s32 preferred = (s32)le32_to_cpu(fl->fl_pg_preferred); int poolid = le32_to_cpu(fl->fl_pg_pool); struct ceph_pg_pool_info *pool; |
51042122d ceph: fix endian ... |
1032 |
unsigned ps; |
f24e9980e ceph: OSD client |
1033 |
|
30dc6381b ceph: fix error p... |
1034 |
BUG_ON(!osdmap); |
f24e9980e ceph: OSD client |
1035 |
|
4fc51be8f ceph: use rbtree ... |
1036 1037 1038 |
pool = __lookup_pg_pool(&osdmap->pg_pools, poolid); if (!pool) return -EIO; |
1654dd0cf ceph: make object... |
1039 |
ps = ceph_str_hash(pool->v.object_hash, oid, strlen(oid)); |
f24e9980e ceph: OSD client |
1040 |
if (preferred >= 0) { |
51042122d ceph: fix endian ... |
1041 |
ps += preferred; |
f24e9980e ceph: OSD client |
1042 1043 1044 1045 1046 1047 |
num = le32_to_cpu(pool->v.lpg_num); num_mask = pool->lpg_num_mask; } else { num = le32_to_cpu(pool->v.pg_num); num_mask = pool->pg_num_mask; } |
51042122d ceph: fix endian ... |
1048 1049 1050 |
pgid.ps = cpu_to_le16(ps); pgid.preferred = cpu_to_le16(preferred); pgid.pool = fl->fl_pg_pool; |
f24e9980e ceph: OSD client |
1051 |
if (preferred >= 0) |
51042122d ceph: fix endian ... |
1052 1053 1054 |
dout("calc_object_layout '%s' pgid %d.%xp%d ", oid, poolid, ps, (int)preferred); |
f24e9980e ceph: OSD client |
1055 |
else |
51042122d ceph: fix endian ... |
1056 1057 |
dout("calc_object_layout '%s' pgid %d.%x ", oid, poolid, ps); |
f24e9980e ceph: OSD client |
1058 |
|
51042122d ceph: fix endian ... |
1059 |
ol->ol_pgid = pgid; |
f24e9980e ceph: OSD client |
1060 |
ol->ol_stripe_unit = fl->fl_object_stripe_unit; |
f24e9980e ceph: OSD client |
1061 1062 |
return 0; } |
3d14c5d2b ceph: factor out ... |
1063 |
EXPORT_SYMBOL(ceph_calc_object_layout); |
f24e9980e ceph: OSD client |
1064 1065 1066 1067 1068 |
/* * Calculate raw osd vector for the given pgid. Return pointer to osd * array, or NULL on failure. */ |
51042122d ceph: fix endian ... |
1069 |
static int *calc_pg_raw(struct ceph_osdmap *osdmap, struct ceph_pg pgid, |
f24e9980e ceph: OSD client |
1070 1071 |
int *osds, int *num) { |
f24e9980e ceph: OSD client |
1072 1073 1074 |
struct ceph_pg_mapping *pg; struct ceph_pg_pool_info *pool; int ruleno; |
782e182e9 libceph: fix pg_t... |
1075 |
unsigned poolid, ps, pps, t; |
51042122d ceph: fix endian ... |
1076 |
int preferred; |
f24e9980e ceph: OSD client |
1077 |
|
782e182e9 libceph: fix pg_t... |
1078 1079 1080 1081 1082 1083 1084 |
poolid = le32_to_cpu(pgid.pool); ps = le16_to_cpu(pgid.ps); preferred = (s16)le16_to_cpu(pgid.preferred); pool = __lookup_pg_pool(&osdmap->pg_pools, poolid); if (!pool) return NULL; |
f24e9980e ceph: OSD client |
1085 |
/* pg_temp? */ |
782e182e9 libceph: fix pg_t... |
1086 1087 1088 1089 1090 1091 1092 |
if (preferred >= 0) t = ceph_stable_mod(ps, le32_to_cpu(pool->v.lpg_num), pool->lpgp_num_mask); else t = ceph_stable_mod(ps, le32_to_cpu(pool->v.pg_num), pool->pgp_num_mask); pgid.ps = cpu_to_le16(t); |
9794b146f ceph: fix memory ... |
1093 1094 1095 1096 |
pg = __lookup_pg_mapping(&osdmap->pg_temp, pgid); if (pg) { *num = pg->len; return pg->osds; |
f24e9980e ceph: OSD client |
1097 1098 1099 |
} /* crush */ |
f24e9980e ceph: OSD client |
1100 1101 1102 |
ruleno = crush_find_rule(osdmap->crush, pool->v.crush_ruleset, pool->v.type, pool->v.size); if (ruleno < 0) { |
effcb9ed4 ceph: print usefu... |
1103 1104 1105 1106 |
pr_err("no crush rule pool %d ruleset %d type %d size %d ", poolid, pool->v.crush_ruleset, pool->v.type, pool->v.size); |
f24e9980e ceph: OSD client |
1107 1108 |
return NULL; } |
782e182e9 libceph: fix pg_t... |
1109 1110 1111 1112 |
/* don't forcefeed bad device ids to crush */ if (preferred >= osdmap->max_osd || preferred >= osdmap->crush->max_devices) preferred = -1; |
51042122d ceph: fix endian ... |
1113 1114 |
if (preferred >= 0) pps = ceph_stable_mod(ps, |
f24e9980e ceph: OSD client |
1115 1116 1117 |
le32_to_cpu(pool->v.lpgp_num), pool->lpgp_num_mask); else |
51042122d ceph: fix endian ... |
1118 |
pps = ceph_stable_mod(ps, |
f24e9980e ceph: OSD client |
1119 1120 |
le32_to_cpu(pool->v.pgp_num), pool->pgp_num_mask); |
51042122d ceph: fix endian ... |
1121 |
pps += poolid; |
f24e9980e ceph: OSD client |
1122 1123 |
*num = crush_do_rule(osdmap->crush, ruleno, pps, osds, min_t(int, pool->v.size, *num), |
51042122d ceph: fix endian ... |
1124 |
preferred, osdmap->osd_weight); |
f24e9980e ceph: OSD client |
1125 1126 1127 1128 |
return osds; } /* |
d85b70566 ceph: resubmit re... |
1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 |
* Return acting set for given pgid. */ int ceph_calc_pg_acting(struct ceph_osdmap *osdmap, struct ceph_pg pgid, int *acting) { int rawosds[CEPH_PG_MAX_SIZE], *osds; int i, o, num = CEPH_PG_MAX_SIZE; osds = calc_pg_raw(osdmap, pgid, rawosds, &num); if (!osds) return -1; /* primary is first up osd */ o = 0; for (i = 0; i < num; i++) if (ceph_osd_is_up(osdmap, osds[i])) acting[o++] = osds[i]; return o; } /* |
f24e9980e ceph: OSD client |
1150 1151 |
* Return primary osd for given pgid, or -1 if none. */ |
51042122d ceph: fix endian ... |
1152 |
int ceph_calc_pg_primary(struct ceph_osdmap *osdmap, struct ceph_pg pgid) |
f24e9980e ceph: OSD client |
1153 |
{ |
d85b70566 ceph: resubmit re... |
1154 1155 |
int rawosds[CEPH_PG_MAX_SIZE], *osds; int i, num = CEPH_PG_MAX_SIZE; |
f24e9980e ceph: OSD client |
1156 1157 1158 1159 1160 1161 1162 |
osds = calc_pg_raw(osdmap, pgid, rawosds, &num); if (!osds) return -1; /* primary is first up osd */ for (i = 0; i < num; i++) |
d85b70566 ceph: resubmit re... |
1163 |
if (ceph_osd_is_up(osdmap, osds[i])) |
f24e9980e ceph: OSD client |
1164 |
return osds[i]; |
f24e9980e ceph: OSD client |
1165 1166 |
return -1; } |
3d14c5d2b ceph: factor out ... |
1167 |
EXPORT_SYMBOL(ceph_calc_pg_primary); |