![Eric Dumazet](/assets/img/avatar_default.png)
Use of "unsigned int" is preferred to bare "unsigned" in net tree. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1143 lines
27 KiB
C
1143 lines
27 KiB
C
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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>
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#include <linux/ceph/osdmap.h>
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#include <linux/ceph/decode.h>
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#include <linux/crush/hash.h>
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#include <linux/crush/mapper.h>
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char *ceph_osdmap_state_str(char *str, int len, int state)
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{
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int flag = 0;
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if (!len)
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goto done;
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*str = '\0';
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if (state) {
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if (state & CEPH_OSD_EXISTS) {
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snprintf(str, len, "exists");
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flag = 1;
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}
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if (state & CEPH_OSD_UP) {
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snprintf(str, len, "%s%s%s", str, (flag ? ", " : ""),
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"up");
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flag = 1;
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}
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} else {
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snprintf(str, len, "doesn't exist");
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}
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done:
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return str;
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}
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/* maps */
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static int calc_bits_of(unsigned int t)
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{
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int b = 0;
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while (t) {
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t = t >> 1;
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b++;
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}
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return b;
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}
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/*
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* the foo_mask is the smallest value 2^n-1 that is >= foo.
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*/
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static void calc_pg_masks(struct ceph_pg_pool_info *pi)
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{
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pi->pg_num_mask = (1 << calc_bits_of(le32_to_cpu(pi->v.pg_num)-1)) - 1;
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pi->pgp_num_mask =
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(1 << calc_bits_of(le32_to_cpu(pi->v.pgp_num)-1)) - 1;
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pi->lpg_num_mask =
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(1 << calc_bits_of(le32_to_cpu(pi->v.lpg_num)-1)) - 1;
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pi->lpgp_num_mask =
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(1 << calc_bits_of(le32_to_cpu(pi->v.lpgp_num)-1)) - 1;
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}
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/*
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* decode crush map
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*/
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static int crush_decode_uniform_bucket(void **p, void *end,
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struct crush_bucket_uniform *b)
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{
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dout("crush_decode_uniform_bucket %p to %p\n", *p, end);
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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;
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bad:
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return -EINVAL;
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}
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static int crush_decode_list_bucket(void **p, void *end,
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struct crush_bucket_list *b)
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{
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int j;
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dout("crush_decode_list_bucket %p to %p\n", *p, end);
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b->item_weights = kcalloc(b->h.size, sizeof(u32), GFP_NOFS);
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if (b->item_weights == NULL)
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return -ENOMEM;
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b->sum_weights = kcalloc(b->h.size, sizeof(u32), GFP_NOFS);
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if (b->sum_weights == NULL)
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return -ENOMEM;
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ceph_decode_need(p, end, 2 * b->h.size * sizeof(u32), bad);
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for (j = 0; j < b->h.size; j++) {
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b->item_weights[j] = ceph_decode_32(p);
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b->sum_weights[j] = ceph_decode_32(p);
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}
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return 0;
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bad:
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return -EINVAL;
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}
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static int crush_decode_tree_bucket(void **p, void *end,
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struct crush_bucket_tree *b)
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{
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int j;
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dout("crush_decode_tree_bucket %p to %p\n", *p, end);
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ceph_decode_32_safe(p, end, b->num_nodes, bad);
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b->node_weights = kcalloc(b->num_nodes, sizeof(u32), GFP_NOFS);
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if (b->node_weights == NULL)
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return -ENOMEM;
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ceph_decode_need(p, end, b->num_nodes * sizeof(u32), bad);
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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;
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bad:
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return -EINVAL;
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}
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static int crush_decode_straw_bucket(void **p, void *end,
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struct crush_bucket_straw *b)
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{
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int j;
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dout("crush_decode_straw_bucket %p to %p\n", *p, end);
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b->item_weights = kcalloc(b->h.size, sizeof(u32), GFP_NOFS);
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if (b->item_weights == NULL)
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return -ENOMEM;
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b->straws = kcalloc(b->h.size, sizeof(u32), GFP_NOFS);
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if (b->straws == NULL)
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return -ENOMEM;
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ceph_decode_need(p, end, 2 * b->h.size * sizeof(u32), bad);
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for (j = 0; j < b->h.size; j++) {
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b->item_weights[j] = ceph_decode_32(p);
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b->straws[j] = ceph_decode_32(p);
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}
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return 0;
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bad:
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return -EINVAL;
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}
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static struct crush_map *crush_decode(void *pbyval, void *end)
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{
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struct crush_map *c;
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int err = -EINVAL;
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int i, j;
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void **p = &pbyval;
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void *start = pbyval;
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u32 magic;
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dout("crush_decode %p to %p len %d\n", *p, end, (int)(end - *p));
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c = kzalloc(sizeof(*c), GFP_NOFS);
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if (c == NULL)
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return ERR_PTR(-ENOMEM);
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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) {
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pr_err("crush_decode magic %x != current %x\n",
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(unsigned int)magic, (unsigned int)CRUSH_MAGIC);
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goto bad;
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}
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c->max_buckets = ceph_decode_32(p);
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c->max_rules = ceph_decode_32(p);
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c->max_devices = ceph_decode_32(p);
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c->device_parents = kcalloc(c->max_devices, sizeof(u32), GFP_NOFS);
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if (c->device_parents == NULL)
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goto badmem;
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c->bucket_parents = kcalloc(c->max_buckets, sizeof(u32), GFP_NOFS);
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if (c->bucket_parents == NULL)
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goto badmem;
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c->buckets = kcalloc(c->max_buckets, sizeof(*c->buckets), GFP_NOFS);
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if (c->buckets == NULL)
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goto badmem;
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c->rules = kcalloc(c->max_rules, sizeof(*c->rules), GFP_NOFS);
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if (c->rules == NULL)
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goto badmem;
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/* buckets */
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for (i = 0; i < c->max_buckets; i++) {
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int size = 0;
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u32 alg;
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struct crush_bucket *b;
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ceph_decode_32_safe(p, end, alg, bad);
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if (alg == 0) {
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c->buckets[i] = NULL;
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continue;
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}
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dout("crush_decode bucket %d off %x %p to %p\n",
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i, (int)(*p-start), *p, end);
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switch (alg) {
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case CRUSH_BUCKET_UNIFORM:
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size = sizeof(struct crush_bucket_uniform);
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break;
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case CRUSH_BUCKET_LIST:
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size = sizeof(struct crush_bucket_list);
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break;
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case CRUSH_BUCKET_TREE:
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size = sizeof(struct crush_bucket_tree);
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break;
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case CRUSH_BUCKET_STRAW:
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size = sizeof(struct crush_bucket_straw);
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break;
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default:
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err = -EINVAL;
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goto bad;
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}
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BUG_ON(size == 0);
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b = c->buckets[i] = kzalloc(size, GFP_NOFS);
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if (b == NULL)
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goto badmem;
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ceph_decode_need(p, end, 4*sizeof(u32), bad);
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b->id = ceph_decode_32(p);
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b->type = ceph_decode_16(p);
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b->alg = ceph_decode_8(p);
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b->hash = ceph_decode_8(p);
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b->weight = ceph_decode_32(p);
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b->size = ceph_decode_32(p);
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dout("crush_decode bucket size %d off %x %p to %p\n",
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b->size, (int)(*p-start), *p, end);
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b->items = kcalloc(b->size, sizeof(__s32), GFP_NOFS);
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if (b->items == NULL)
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goto badmem;
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b->perm = kcalloc(b->size, sizeof(u32), GFP_NOFS);
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if (b->perm == NULL)
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goto badmem;
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b->perm_n = 0;
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ceph_decode_need(p, end, b->size*sizeof(u32), bad);
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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) {
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case CRUSH_BUCKET_UNIFORM:
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err = crush_decode_uniform_bucket(p, end,
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(struct crush_bucket_uniform *)b);
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if (err < 0)
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goto bad;
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break;
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case CRUSH_BUCKET_LIST:
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err = crush_decode_list_bucket(p, end,
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(struct crush_bucket_list *)b);
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if (err < 0)
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goto bad;
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break;
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case CRUSH_BUCKET_TREE:
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err = crush_decode_tree_bucket(p, end,
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(struct crush_bucket_tree *)b);
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if (err < 0)
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goto bad;
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break;
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case CRUSH_BUCKET_STRAW:
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err = crush_decode_straw_bucket(p, end,
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(struct crush_bucket_straw *)b);
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if (err < 0)
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goto bad;
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break;
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}
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}
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/* rules */
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dout("rule vec is %p\n", c->rules);
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for (i = 0; i < c->max_rules; i++) {
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u32 yes;
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struct crush_rule *r;
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ceph_decode_32_safe(p, end, yes, bad);
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if (!yes) {
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dout("crush_decode NO rule %d off %x %p to %p\n",
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i, (int)(*p-start), *p, end);
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c->rules[i] = NULL;
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continue;
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}
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dout("crush_decode rule %d off %x %p to %p\n",
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i, (int)(*p-start), *p, end);
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/* len */
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ceph_decode_32_safe(p, end, yes, bad);
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#if BITS_PER_LONG == 32
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err = -EINVAL;
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if (yes > (ULONG_MAX - sizeof(*r))
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/ sizeof(struct crush_rule_step))
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goto bad;
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#endif
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r = c->rules[i] = kmalloc(sizeof(*r) +
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yes*sizeof(struct crush_rule_step),
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GFP_NOFS);
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if (r == NULL)
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goto badmem;
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dout(" rule %d is at %p\n", i, r);
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r->len = yes;
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ceph_decode_copy_safe(p, end, &r->mask, 4, bad); /* 4 u8's */
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ceph_decode_need(p, end, r->len*3*sizeof(u32), bad);
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for (j = 0; j < r->len; j++) {
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r->steps[j].op = ceph_decode_32(p);
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r->steps[j].arg1 = ceph_decode_32(p);
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r->steps[j].arg2 = ceph_decode_32(p);
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}
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}
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/* ignore trailing name maps. */
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dout("crush_decode success\n");
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return c;
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badmem:
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err = -ENOMEM;
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bad:
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dout("crush_decode fail %d\n", err);
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crush_destroy(c);
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return ERR_PTR(err);
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}
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/*
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* rbtree of pg_mapping for handling pg_temp (explicit mapping of pgid
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* 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)
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{
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u64 a = *(u64 *)&l;
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u64 b = *(u64 *)&r;
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if (a < b)
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return -1;
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if (a > b)
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return 1;
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return 0;
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}
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static int __insert_pg_mapping(struct ceph_pg_mapping *new,
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struct rb_root *root)
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{
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struct rb_node **p = &root->rb_node;
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struct rb_node *parent = NULL;
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struct ceph_pg_mapping *pg = NULL;
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int c;
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dout("__insert_pg_mapping %llx %p\n", *(u64 *)&new->pgid, new);
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while (*p) {
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parent = *p;
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pg = rb_entry(parent, struct ceph_pg_mapping, node);
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c = pgid_cmp(new->pgid, pg->pgid);
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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;
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else
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return -EEXIST;
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}
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rb_link_node(&new->node, parent, p);
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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,
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struct ceph_pg pgid)
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{
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struct rb_node *n = root->rb_node;
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struct ceph_pg_mapping *pg;
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int c;
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while (n) {
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pg = rb_entry(n, struct ceph_pg_mapping, node);
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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 {
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dout("__lookup_pg_mapping %llx got %p\n",
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*(u64 *)&pgid, pg);
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return pg;
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}
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}
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return NULL;
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}
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static int __remove_pg_mapping(struct rb_root *root, struct ceph_pg pgid)
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{
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struct ceph_pg_mapping *pg = __lookup_pg_mapping(root, pgid);
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if (pg) {
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dout("__remove_pg_mapping %llx %p\n", *(u64 *)&pgid, pg);
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rb_erase(&pg->node, root);
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kfree(pg);
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return 0;
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}
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dout("__remove_pg_mapping %llx dne\n", *(u64 *)&pgid);
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return -ENOENT;
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}
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/*
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* rbtree of pg pool info
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*/
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static int __insert_pg_pool(struct rb_root *root, struct ceph_pg_pool_info *new)
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{
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struct rb_node **p = &root->rb_node;
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struct rb_node *parent = NULL;
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struct ceph_pg_pool_info *pi = NULL;
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while (*p) {
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parent = *p;
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pi = rb_entry(parent, struct ceph_pg_pool_info, node);
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if (new->id < pi->id)
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p = &(*p)->rb_left;
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else if (new->id > pi->id)
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p = &(*p)->rb_right;
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else
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return -EEXIST;
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}
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rb_link_node(&new->node, parent, p);
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rb_insert_color(&new->node, root);
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return 0;
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}
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static struct ceph_pg_pool_info *__lookup_pg_pool(struct rb_root *root, int id)
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{
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struct ceph_pg_pool_info *pi;
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struct rb_node *n = root->rb_node;
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while (n) {
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pi = rb_entry(n, struct ceph_pg_pool_info, node);
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if (id < pi->id)
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n = n->rb_left;
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else if (id > pi->id)
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n = n->rb_right;
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else
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return pi;
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}
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return NULL;
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}
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|
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int ceph_pg_poolid_by_name(struct ceph_osdmap *map, const char *name)
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{
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struct rb_node *rbp;
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for (rbp = rb_first(&map->pg_pools); rbp; rbp = rb_next(rbp)) {
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struct ceph_pg_pool_info *pi =
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rb_entry(rbp, struct ceph_pg_pool_info, node);
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if (pi->name && strcmp(pi->name, name) == 0)
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return pi->id;
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}
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return -ENOENT;
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}
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EXPORT_SYMBOL(ceph_pg_poolid_by_name);
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|
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static void __remove_pg_pool(struct rb_root *root, struct ceph_pg_pool_info *pi)
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{
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rb_erase(&pi->node, root);
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kfree(pi->name);
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kfree(pi);
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}
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|
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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 int n, m;
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ceph_decode_copy(p, &pi->v, sizeof(pi->v));
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calc_pg_masks(pi);
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|
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/* num_snaps * snap_info_t */
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n = le32_to_cpu(pi->v.num_snaps);
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while (n--) {
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ceph_decode_need(p, end, sizeof(u64) + 1 + sizeof(u64) +
|
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sizeof(struct ceph_timespec), bad);
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*p += sizeof(u64) + /* key */
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1 + sizeof(u64) + /* u8, snapid */
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sizeof(struct ceph_timespec);
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m = ceph_decode_32(p); /* snap name */
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*p += m;
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}
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|
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*p += le32_to_cpu(pi->v.num_removed_snap_intervals) * sizeof(u64) * 2;
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return 0;
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|
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bad:
|
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return -EINVAL;
|
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}
|
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|
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static int __decode_pool_names(void **p, void *end, struct ceph_osdmap *map)
|
|
{
|
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struct ceph_pg_pool_info *pi;
|
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u32 num, len, pool;
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|
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ceph_decode_32_safe(p, end, num, bad);
|
|
dout(" %d pool names\n", num);
|
|
while (num--) {
|
|
ceph_decode_32_safe(p, end, pool, bad);
|
|
ceph_decode_32_safe(p, end, len, bad);
|
|
dout(" pool %d len %d\n", 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\n", pi->name);
|
|
}
|
|
}
|
|
*p += len;
|
|
}
|
|
return 0;
|
|
|
|
bad:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* osd map
|
|
*/
|
|
void ceph_osdmap_destroy(struct ceph_osdmap *map)
|
|
{
|
|
dout("osdmap_destroy %p\n", 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;
|
|
}
|
|
|
|
/*
|
|
* decode a full map.
|
|
*/
|
|
struct ceph_osdmap *osdmap_decode(void **p, void *end)
|
|
{
|
|
struct ceph_osdmap *map;
|
|
u16 version;
|
|
u32 len, max, i;
|
|
u8 ev;
|
|
int err = -EINVAL;
|
|
void *start = *p;
|
|
struct ceph_pg_pool_info *pi;
|
|
|
|
dout("osdmap_decode %p to %p len %d\n", *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);
|
|
if (version > CEPH_OSDMAP_VERSION) {
|
|
pr_warning("got unknown v %d > %d of osdmap\n", version,
|
|
CEPH_OSDMAP_VERSION);
|
|
goto bad;
|
|
}
|
|
|
|
ceph_decode_need(p, end, 2*sizeof(u64)+6*sizeof(u32), bad);
|
|
ceph_decode_copy(p, &map->fsid, sizeof(map->fsid));
|
|
map->epoch = ceph_decode_32(p);
|
|
ceph_decode_copy(p, &map->created, sizeof(map->created));
|
|
ceph_decode_copy(p, &map->modified, sizeof(map->modified));
|
|
|
|
ceph_decode_32_safe(p, end, max, bad);
|
|
while (max--) {
|
|
ceph_decode_need(p, end, 4 + 1 + sizeof(pi->v), bad);
|
|
pi = kzalloc(sizeof(*pi), GFP_NOFS);
|
|
if (!pi)
|
|
goto bad;
|
|
pi->id = ceph_decode_32(p);
|
|
ev = ceph_decode_8(p); /* encoding version */
|
|
if (ev > CEPH_PG_POOL_VERSION) {
|
|
pr_warning("got unknown v %d > %d of ceph_pg_pool\n",
|
|
ev, CEPH_PG_POOL_VERSION);
|
|
kfree(pi);
|
|
goto bad;
|
|
}
|
|
err = __decode_pool(p, end, pi);
|
|
if (err < 0) {
|
|
kfree(pi);
|
|
goto bad;
|
|
}
|
|
__insert_pg_pool(&map->pg_pools, pi);
|
|
}
|
|
|
|
if (version >= 5 && __decode_pool_names(p, end, map) < 0)
|
|
goto bad;
|
|
|
|
ceph_decode_32_safe(p, end, map->pool_max, bad);
|
|
|
|
ceph_decode_32_safe(p, end, map->flags, bad);
|
|
|
|
max = ceph_decode_32(p);
|
|
|
|
/* (re)alloc osd arrays */
|
|
err = osdmap_set_max_osd(map, max);
|
|
if (err < 0)
|
|
goto bad;
|
|
dout("osdmap_decode max_osd = %d\n", 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++)
|
|
map->osd_weight[i] = ceph_decode_32(p);
|
|
|
|
*p += 4; /* skip length field (should match max) */
|
|
ceph_decode_copy(p, map->osd_addr, map->max_osd*sizeof(*map->osd_addr));
|
|
for (i = 0; i < map->max_osd; i++)
|
|
ceph_decode_addr(&map->osd_addr[i]);
|
|
|
|
/* pg_temp */
|
|
ceph_decode_32_safe(p, end, len, bad);
|
|
for (i = 0; i < len; i++) {
|
|
int n, j;
|
|
struct ceph_pg pgid;
|
|
struct ceph_pg_mapping *pg;
|
|
|
|
ceph_decode_need(p, end, sizeof(u32) + sizeof(u64), bad);
|
|
ceph_decode_copy(p, &pgid, sizeof(pgid));
|
|
n = ceph_decode_32(p);
|
|
ceph_decode_need(p, end, n * sizeof(u32), bad);
|
|
err = -ENOMEM;
|
|
pg = kmalloc(sizeof(*pg) + n*sizeof(u32), GFP_NOFS);
|
|
if (!pg)
|
|
goto bad;
|
|
pg->pgid = pgid;
|
|
pg->len = n;
|
|
for (j = 0; j < n; j++)
|
|
pg->osds[j] = ceph_decode_32(p);
|
|
|
|
err = __insert_pg_mapping(pg, &map->pg_temp);
|
|
if (err)
|
|
goto bad;
|
|
dout(" added pg_temp %llx len %d\n", *(u64 *)&pgid, len);
|
|
}
|
|
|
|
/* crush */
|
|
ceph_decode_32_safe(p, end, len, bad);
|
|
dout("osdmap_decode crush len %d from off 0x%x\n", 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\n", *p, end);
|
|
return map;
|
|
|
|
bad:
|
|
dout("osdmap_decode fail\n");
|
|
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)
|
|
{
|
|
struct crush_map *newcrush = NULL;
|
|
struct ceph_fsid fsid;
|
|
u32 epoch = 0;
|
|
struct ceph_timespec modified;
|
|
u32 len, pool;
|
|
__s32 new_pool_max, new_flags, max;
|
|
void *start = *p;
|
|
int err = -EINVAL;
|
|
u16 version;
|
|
|
|
ceph_decode_16_safe(p, end, version, bad);
|
|
if (version > CEPH_OSDMAP_INC_VERSION) {
|
|
pr_warning("got unknown v %d > %d of inc osdmap\n", version,
|
|
CEPH_OSDMAP_INC_VERSION);
|
|
goto bad;
|
|
}
|
|
|
|
ceph_decode_need(p, end, sizeof(fsid)+sizeof(modified)+2*sizeof(u32),
|
|
bad);
|
|
ceph_decode_copy(p, &fsid, sizeof(fsid));
|
|
epoch = ceph_decode_32(p);
|
|
BUG_ON(epoch != map->epoch+1);
|
|
ceph_decode_copy(p, &modified, sizeof(modified));
|
|
new_pool_max = ceph_decode_32(p);
|
|
new_flags = ceph_decode_32(p);
|
|
|
|
/* full map? */
|
|
ceph_decode_32_safe(p, end, len, bad);
|
|
if (len > 0) {
|
|
dout("apply_incremental full map len %d, %p to %p\n",
|
|
len, *p, end);
|
|
return osdmap_decode(p, min(*p+len, end));
|
|
}
|
|
|
|
/* new crush? */
|
|
ceph_decode_32_safe(p, end, len, bad);
|
|
if (len > 0) {
|
|
dout("apply_incremental new crush map len %d, %p to %p\n",
|
|
len, *p, end);
|
|
newcrush = crush_decode(*p, min(*p+len, end));
|
|
if (IS_ERR(newcrush))
|
|
return ERR_CAST(newcrush);
|
|
*p += len;
|
|
}
|
|
|
|
/* new flags? */
|
|
if (new_flags >= 0)
|
|
map->flags = new_flags;
|
|
if (new_pool_max >= 0)
|
|
map->pool_max = new_pool_max;
|
|
|
|
ceph_decode_need(p, end, 5*sizeof(u32), bad);
|
|
|
|
/* new max? */
|
|
max = ceph_decode_32(p);
|
|
if (max >= 0) {
|
|
err = osdmap_set_max_osd(map, max);
|
|
if (err < 0)
|
|
goto bad;
|
|
}
|
|
|
|
map->epoch++;
|
|
map->modified = modified;
|
|
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--) {
|
|
__u8 ev;
|
|
struct ceph_pg_pool_info *pi;
|
|
|
|
ceph_decode_32_safe(p, end, pool, bad);
|
|
ceph_decode_need(p, end, 1 + sizeof(pi->v), bad);
|
|
ev = ceph_decode_8(p); /* encoding version */
|
|
if (ev > CEPH_PG_POOL_VERSION) {
|
|
pr_warning("got unknown v %d > %d of ceph_pg_pool\n",
|
|
ev, CEPH_PG_POOL_VERSION);
|
|
goto bad;
|
|
}
|
|
pi = __lookup_pg_pool(&map->pg_pools, pool);
|
|
if (!pi) {
|
|
pi = kzalloc(sizeof(*pi), GFP_NOFS);
|
|
if (!pi) {
|
|
err = -ENOMEM;
|
|
goto bad;
|
|
}
|
|
pi->id = pool;
|
|
__insert_pg_pool(&map->pg_pools, pi);
|
|
}
|
|
err = __decode_pool(p, end, pi);
|
|
if (err < 0)
|
|
goto bad;
|
|
}
|
|
if (version >= 5 && __decode_pool_names(p, end, map) < 0)
|
|
goto bad;
|
|
|
|
/* old_pool */
|
|
ceph_decode_32_safe(p, end, len, bad);
|
|
while (len--) {
|
|
struct ceph_pg_pool_info *pi;
|
|
|
|
ceph_decode_32_safe(p, end, pool, bad);
|
|
pi = __lookup_pg_pool(&map->pg_pools, pool);
|
|
if (pi)
|
|
__remove_pg_pool(&map->pg_pools, pi);
|
|
}
|
|
|
|
/* 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);
|
|
ceph_decode_addr(&addr);
|
|
pr_info("osd%d up\n", osd);
|
|
BUG_ON(osd >= map->max_osd);
|
|
map->osd_state[osd] |= CEPH_OSD_UP;
|
|
map->osd_addr[osd] = addr;
|
|
}
|
|
|
|
/* new_state */
|
|
ceph_decode_32_safe(p, end, len, bad);
|
|
while (len--) {
|
|
u32 osd;
|
|
u8 xorstate;
|
|
ceph_decode_32_safe(p, end, osd, bad);
|
|
xorstate = **(u8 **)p;
|
|
(*p)++; /* clean flag */
|
|
if (xorstate == 0)
|
|
xorstate = CEPH_OSD_UP;
|
|
if (xorstate & CEPH_OSD_UP)
|
|
pr_info("osd%d down\n", osd);
|
|
if (osd < map->max_osd)
|
|
map->osd_state[osd] ^= xorstate;
|
|
}
|
|
|
|
/* new_weight */
|
|
ceph_decode_32_safe(p, end, len, bad);
|
|
while (len--) {
|
|
u32 osd, off;
|
|
ceph_decode_need(p, end, sizeof(u32)*2, bad);
|
|
osd = ceph_decode_32(p);
|
|
off = ceph_decode_32(p);
|
|
pr_info("osd%d weight 0x%x %s\n", 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 */
|
|
ceph_decode_32_safe(p, end, len, bad);
|
|
while (len--) {
|
|
struct ceph_pg_mapping *pg;
|
|
int j;
|
|
struct ceph_pg pgid;
|
|
u32 pglen;
|
|
ceph_decode_need(p, end, sizeof(u64) + sizeof(u32), bad);
|
|
ceph_decode_copy(p, &pgid, sizeof(pgid));
|
|
pglen = ceph_decode_32(p);
|
|
|
|
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;
|
|
for (j = 0; j < pglen; j++)
|
|
pg->osds[j] = ceph_decode_32(p);
|
|
err = __insert_pg_mapping(pg, &map->pg_temp);
|
|
if (err) {
|
|
kfree(pg);
|
|
goto bad;
|
|
}
|
|
dout(" added pg_temp %llx len %d\n", *(u64 *)&pgid,
|
|
pglen);
|
|
} else {
|
|
/* remove */
|
|
__remove_pg_mapping(&map->pg_temp, pgid);
|
|
}
|
|
}
|
|
|
|
/* ignore the rest */
|
|
*p = end;
|
|
return map;
|
|
|
|
bad:
|
|
pr_err("corrupt inc osdmap epoch %d off %d (%p of %p-%p)\n",
|
|
epoch, (int)(*p - start), *p, start, end);
|
|
print_hex_dump(KERN_DEBUG, "osdmap: ",
|
|
DUMP_PREFIX_OFFSET, 16, 1,
|
|
start, end - start, true);
|
|
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,
|
|
u64 *ono,
|
|
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;
|
|
u64 t, su_offset;
|
|
|
|
dout("mapping %llu~%llu osize %u fl_su %u\n", off, *plen,
|
|
osize, su);
|
|
su_per_object = osize / su;
|
|
dout("osize %u / su %u = su_per_object %u\n", 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\n", off, su, bl);
|
|
|
|
stripeno = bl / sc;
|
|
stripepos = bl % sc;
|
|
objsetno = stripeno / su_per_object;
|
|
|
|
*ono = objsetno * sc + stripepos;
|
|
dout("objset %u * sc %u = ono %u\n", objsetno, sc, (unsigned int)*ono);
|
|
|
|
/* *oxoff = *off % layout->fl_stripe_unit; # offset in su */
|
|
t = off;
|
|
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);
|
|
*plen = *oxlen;
|
|
|
|
dout(" obj extent %llu~%llu\n", *oxoff, *oxlen);
|
|
}
|
|
EXPORT_SYMBOL(ceph_calc_file_object_mapping);
|
|
|
|
/*
|
|
* 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 int num, num_mask;
|
|
struct ceph_pg pgid;
|
|
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;
|
|
unsigned int ps;
|
|
|
|
BUG_ON(!osdmap);
|
|
|
|
pool = __lookup_pg_pool(&osdmap->pg_pools, poolid);
|
|
if (!pool)
|
|
return -EIO;
|
|
ps = ceph_str_hash(pool->v.object_hash, oid, strlen(oid));
|
|
if (preferred >= 0) {
|
|
ps += preferred;
|
|
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;
|
|
}
|
|
|
|
pgid.ps = cpu_to_le16(ps);
|
|
pgid.preferred = cpu_to_le16(preferred);
|
|
pgid.pool = fl->fl_pg_pool;
|
|
if (preferred >= 0)
|
|
dout("calc_object_layout '%s' pgid %d.%xp%d\n", oid, poolid, ps,
|
|
(int)preferred);
|
|
else
|
|
dout("calc_object_layout '%s' pgid %d.%x\n", oid, poolid, ps);
|
|
|
|
ol->ol_pgid = pgid;
|
|
ol->ol_stripe_unit = fl->fl_object_stripe_unit;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(ceph_calc_object_layout);
|
|
|
|
/*
|
|
* Calculate raw osd vector for the given pgid. Return pointer to osd
|
|
* array, or NULL on failure.
|
|
*/
|
|
static int *calc_pg_raw(struct ceph_osdmap *osdmap, struct ceph_pg pgid,
|
|
int *osds, int *num)
|
|
{
|
|
struct ceph_pg_mapping *pg;
|
|
struct ceph_pg_pool_info *pool;
|
|
int ruleno;
|
|
unsigned int poolid, ps, pps, t;
|
|
int preferred;
|
|
|
|
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;
|
|
|
|
/* pg_temp? */
|
|
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);
|
|
pg = __lookup_pg_mapping(&osdmap->pg_temp, pgid);
|
|
if (pg) {
|
|
*num = pg->len;
|
|
return pg->osds;
|
|
}
|
|
|
|
/* crush */
|
|
ruleno = crush_find_rule(osdmap->crush, pool->v.crush_ruleset,
|
|
pool->v.type, pool->v.size);
|
|
if (ruleno < 0) {
|
|
pr_err("no crush rule pool %d ruleset %d type %d size %d\n",
|
|
poolid, pool->v.crush_ruleset, pool->v.type,
|
|
pool->v.size);
|
|
return NULL;
|
|
}
|
|
|
|
/* don't forcefeed bad device ids to crush */
|
|
if (preferred >= osdmap->max_osd ||
|
|
preferred >= osdmap->crush->max_devices)
|
|
preferred = -1;
|
|
|
|
if (preferred >= 0)
|
|
pps = ceph_stable_mod(ps,
|
|
le32_to_cpu(pool->v.lpgp_num),
|
|
pool->lpgp_num_mask);
|
|
else
|
|
pps = ceph_stable_mod(ps,
|
|
le32_to_cpu(pool->v.pgp_num),
|
|
pool->pgp_num_mask);
|
|
pps += poolid;
|
|
*num = crush_do_rule(osdmap->crush, ruleno, pps, osds,
|
|
min_t(int, pool->v.size, *num),
|
|
preferred, osdmap->osd_weight);
|
|
return osds;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
}
|
|
|
|
/*
|
|
* Return primary osd for given pgid, or -1 if none.
|
|
*/
|
|
int ceph_calc_pg_primary(struct ceph_osdmap *osdmap, struct ceph_pg pgid)
|
|
{
|
|
int rawosds[CEPH_PG_MAX_SIZE], *osds;
|
|
int i, num = CEPH_PG_MAX_SIZE;
|
|
|
|
osds = calc_pg_raw(osdmap, pgid, rawosds, &num);
|
|
if (!osds)
|
|
return -1;
|
|
|
|
/* primary is first up osd */
|
|
for (i = 0; i < num; i++)
|
|
if (ceph_osd_is_up(osdmap, osds[i]))
|
|
return osds[i];
|
|
return -1;
|
|
}
|
|
EXPORT_SYMBOL(ceph_calc_pg_primary);
|