mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 20:53:53 +08:00
930c532869
Currently, osd_weight and osd_state fields are updated in the encoding
order. This is wrong, because an incremental map may look like e.g.
new_up_client: { osd=6, addr=... } # set osd_state and addr
new_state: { osd=6, xorstate=EXISTS } # clear osd_state
Suppose osd6's current osd_state is EXISTS (i.e. osd6 is down). After
applying new_up_client, osd_state is changed to EXISTS | UP. Carrying
on with the new_state update, we flip EXISTS and leave osd6 in a weird
"!EXISTS but UP" state. A non-existent OSD is considered down by the
mapping code
2087 for (i = 0; i < pg->pg_temp.len; i++) {
2088 if (ceph_osd_is_down(osdmap, pg->pg_temp.osds[i])) {
2089 if (ceph_can_shift_osds(pi))
2090 continue;
2091
2092 temp->osds[temp->size++] = CRUSH_ITEM_NONE;
and so requests get directed to the second OSD in the set instead of
the first, resulting in OSD-side errors like:
[WRN] : client.4239 192.168.122.21:0/2444980242 misdirected client.4239.1:2827 pg 2.5df899f2 to osd.4 not [1,4,6] in e680/680
and hung rbds on the client:
[ 493.566367] rbd: rbd0: write 400000 at 11cc00000 (0)
[ 493.566805] rbd: rbd0: result -6 xferred 400000
[ 493.567011] blk_update_request: I/O error, dev rbd0, sector 9330688
The fix is to decouple application from the decoding and:
- apply new_weight first
- apply new_state before new_up_client
- twiddle osd_state flags if marking in
- clear out some of the state if osd is destroyed
Fixes: http://tracker.ceph.com/issues/14901
Cc: stable@vger.kernel.org # 3.15+: 6dd74e44dc
: libceph: set 'exists' flag for newly up osd
Cc: stable@vger.kernel.org # 3.15+
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Josh Durgin <jdurgin@redhat.com>
2161 lines
49 KiB
C
2161 lines
49 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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if (!len)
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return str;
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if ((state & CEPH_OSD_EXISTS) && (state & CEPH_OSD_UP))
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snprintf(str, len, "exists, up");
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else if (state & CEPH_OSD_EXISTS)
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snprintf(str, len, "exists");
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else if (state & CEPH_OSD_UP)
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snprintf(str, len, "up");
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else
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snprintf(str, len, "doesn't exist");
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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(pi->pg_num-1)) - 1;
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pi->pgp_num_mask = (1 << calc_bits_of(pi->pgp_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_8_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 int crush_decode_straw2_bucket(void **p, void *end,
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struct crush_bucket_straw2 *b)
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{
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int j;
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dout("crush_decode_straw2_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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ceph_decode_need(p, end, 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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return 0;
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bad:
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return -EINVAL;
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}
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static int skip_name_map(void **p, void *end)
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{
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int len;
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ceph_decode_32_safe(p, end, len ,bad);
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while (len--) {
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int strlen;
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*p += sizeof(u32);
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ceph_decode_32_safe(p, end, strlen, bad);
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*p += strlen;
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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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u32 num_name_maps;
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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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/* set tunables to default values */
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c->choose_local_tries = 2;
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c->choose_local_fallback_tries = 5;
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c->choose_total_tries = 19;
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c->chooseleaf_descend_once = 0;
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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->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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case CRUSH_BUCKET_STRAW2:
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size = sizeof(struct crush_bucket_straw2);
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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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case CRUSH_BUCKET_STRAW2:
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err = crush_decode_straw2_bucket(p, end,
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(struct crush_bucket_straw2 *)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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for (num_name_maps = 0; num_name_maps < 3; num_name_maps++) {
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err = skip_name_map(p, end);
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if (err < 0)
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goto done;
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}
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/* tunables */
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ceph_decode_need(p, end, 3*sizeof(u32), done);
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c->choose_local_tries = ceph_decode_32(p);
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c->choose_local_fallback_tries = ceph_decode_32(p);
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c->choose_total_tries = ceph_decode_32(p);
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dout("crush decode tunable choose_local_tries = %d\n",
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c->choose_local_tries);
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dout("crush decode tunable choose_local_fallback_tries = %d\n",
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c->choose_local_fallback_tries);
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dout("crush decode tunable choose_total_tries = %d\n",
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c->choose_total_tries);
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ceph_decode_need(p, end, sizeof(u32), done);
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c->chooseleaf_descend_once = ceph_decode_32(p);
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dout("crush decode tunable chooseleaf_descend_once = %d\n",
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c->chooseleaf_descend_once);
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ceph_decode_need(p, end, sizeof(u8), done);
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c->chooseleaf_vary_r = ceph_decode_8(p);
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dout("crush decode tunable chooseleaf_vary_r = %d\n",
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c->chooseleaf_vary_r);
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/* skip straw_calc_version, allowed_bucket_algs */
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ceph_decode_need(p, end, sizeof(u8) + sizeof(u32), done);
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*p += sizeof(u8) + sizeof(u32);
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ceph_decode_need(p, end, sizeof(u8), done);
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c->chooseleaf_stable = ceph_decode_8(p);
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dout("crush decode tunable chooseleaf_stable = %d\n",
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c->chooseleaf_stable);
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done:
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dout("crush_decode success\n");
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return c;
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|
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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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int ceph_pg_compare(const struct ceph_pg *lhs, const struct ceph_pg *rhs)
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{
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if (lhs->pool < rhs->pool)
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return -1;
|
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if (lhs->pool > rhs->pool)
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return 1;
|
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if (lhs->seed < rhs->seed)
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return -1;
|
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if (lhs->seed > rhs->seed)
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return 1;
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|
|
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return 0;
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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) and primary_temp (explicit primary setting)
|
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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;
|
|
|
|
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 = ceph_pg_compare(&new->pgid, &pg->pgid);
|
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if (c < 0)
|
|
p = &(*p)->rb_left;
|
|
else if (c > 0)
|
|
p = &(*p)->rb_right;
|
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else
|
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return -EEXIST;
|
|
}
|
|
|
|
rb_link_node(&new->node, parent, p);
|
|
rb_insert_color(&new->node, root);
|
|
return 0;
|
|
}
|
|
|
|
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 = ceph_pg_compare(&pgid, &pg->pgid);
|
|
if (c < 0) {
|
|
n = n->rb_left;
|
|
} else if (c > 0) {
|
|
n = n->rb_right;
|
|
} else {
|
|
dout("__lookup_pg_mapping %lld.%x got %p\n",
|
|
pgid.pool, pgid.seed, pg);
|
|
return pg;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
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 %lld.%x %p\n", pgid.pool, pgid.seed,
|
|
pg);
|
|
rb_erase(&pg->node, root);
|
|
kfree(pg);
|
|
return 0;
|
|
}
|
|
dout("__remove_pg_mapping %lld.%x dne\n", pgid.pool, pgid.seed);
|
|
return -ENOENT;
|
|
}
|
|
|
|
/*
|
|
* 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, u64 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;
|
|
}
|
|
|
|
struct ceph_pg_pool_info *ceph_pg_pool_by_id(struct ceph_osdmap *map, u64 id)
|
|
{
|
|
return __lookup_pg_pool(&map->pg_pools, id);
|
|
}
|
|
|
|
const char *ceph_pg_pool_name_by_id(struct ceph_osdmap *map, u64 id)
|
|
{
|
|
struct ceph_pg_pool_info *pi;
|
|
|
|
if (id == CEPH_NOPOOL)
|
|
return NULL;
|
|
|
|
if (WARN_ON_ONCE(id > (u64) INT_MAX))
|
|
return NULL;
|
|
|
|
pi = __lookup_pg_pool(&map->pg_pools, (int) id);
|
|
|
|
return pi ? pi->name : NULL;
|
|
}
|
|
EXPORT_SYMBOL(ceph_pg_pool_name_by_id);
|
|
|
|
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;
|
|
}
|
|
EXPORT_SYMBOL(ceph_pg_poolid_by_name);
|
|
|
|
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);
|
|
}
|
|
|
|
static int decode_pool(void **p, void *end, struct ceph_pg_pool_info *pi)
|
|
{
|
|
u8 ev, cv;
|
|
unsigned len, num;
|
|
void *pool_end;
|
|
|
|
ceph_decode_need(p, end, 2 + 4, bad);
|
|
ev = ceph_decode_8(p); /* encoding version */
|
|
cv = ceph_decode_8(p); /* compat version */
|
|
if (ev < 5) {
|
|
pr_warn("got v %d < 5 cv %d of ceph_pg_pool\n", ev, cv);
|
|
return -EINVAL;
|
|
}
|
|
if (cv > 9) {
|
|
pr_warn("got v %d cv %d > 9 of ceph_pg_pool\n", ev, cv);
|
|
return -EINVAL;
|
|
}
|
|
len = ceph_decode_32(p);
|
|
ceph_decode_need(p, end, len, bad);
|
|
pool_end = *p + len;
|
|
|
|
pi->type = ceph_decode_8(p);
|
|
pi->size = ceph_decode_8(p);
|
|
pi->crush_ruleset = ceph_decode_8(p);
|
|
pi->object_hash = ceph_decode_8(p);
|
|
|
|
pi->pg_num = ceph_decode_32(p);
|
|
pi->pgp_num = ceph_decode_32(p);
|
|
|
|
*p += 4 + 4; /* skip lpg* */
|
|
*p += 4; /* skip last_change */
|
|
*p += 8 + 4; /* skip snap_seq, snap_epoch */
|
|
|
|
/* skip snaps */
|
|
num = ceph_decode_32(p);
|
|
while (num--) {
|
|
*p += 8; /* snapid key */
|
|
*p += 1 + 1; /* versions */
|
|
len = ceph_decode_32(p);
|
|
*p += len;
|
|
}
|
|
|
|
/* skip removed_snaps */
|
|
num = ceph_decode_32(p);
|
|
*p += num * (8 + 8);
|
|
|
|
*p += 8; /* skip auid */
|
|
pi->flags = ceph_decode_64(p);
|
|
*p += 4; /* skip crash_replay_interval */
|
|
|
|
if (ev >= 7)
|
|
pi->min_size = ceph_decode_8(p);
|
|
else
|
|
pi->min_size = pi->size - pi->size / 2;
|
|
|
|
if (ev >= 8)
|
|
*p += 8 + 8; /* skip quota_max_* */
|
|
|
|
if (ev >= 9) {
|
|
/* skip tiers */
|
|
num = ceph_decode_32(p);
|
|
*p += num * 8;
|
|
|
|
*p += 8; /* skip tier_of */
|
|
*p += 1; /* skip cache_mode */
|
|
|
|
pi->read_tier = ceph_decode_64(p);
|
|
pi->write_tier = ceph_decode_64(p);
|
|
} else {
|
|
pi->read_tier = -1;
|
|
pi->write_tier = -1;
|
|
}
|
|
|
|
if (ev >= 10) {
|
|
/* skip properties */
|
|
num = ceph_decode_32(p);
|
|
while (num--) {
|
|
len = ceph_decode_32(p);
|
|
*p += len; /* key */
|
|
len = ceph_decode_32(p);
|
|
*p += len; /* val */
|
|
}
|
|
}
|
|
|
|
if (ev >= 11) {
|
|
/* skip hit_set_params */
|
|
*p += 1 + 1; /* versions */
|
|
len = ceph_decode_32(p);
|
|
*p += len;
|
|
|
|
*p += 4; /* skip hit_set_period */
|
|
*p += 4; /* skip hit_set_count */
|
|
}
|
|
|
|
if (ev >= 12)
|
|
*p += 4; /* skip stripe_width */
|
|
|
|
if (ev >= 13) {
|
|
*p += 8; /* skip target_max_bytes */
|
|
*p += 8; /* skip target_max_objects */
|
|
*p += 4; /* skip cache_target_dirty_ratio_micro */
|
|
*p += 4; /* skip cache_target_full_ratio_micro */
|
|
*p += 4; /* skip cache_min_flush_age */
|
|
*p += 4; /* skip cache_min_evict_age */
|
|
}
|
|
|
|
if (ev >= 14) {
|
|
/* skip erasure_code_profile */
|
|
len = ceph_decode_32(p);
|
|
*p += len;
|
|
}
|
|
|
|
if (ev >= 15)
|
|
pi->last_force_request_resend = ceph_decode_32(p);
|
|
else
|
|
pi->last_force_request_resend = 0;
|
|
|
|
/* ignore the rest */
|
|
|
|
*p = pool_end;
|
|
calc_pg_masks(pi);
|
|
return 0;
|
|
|
|
bad:
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int decode_pool_names(void **p, void *end, struct ceph_osdmap *map)
|
|
{
|
|
struct ceph_pg_pool_info *pi;
|
|
u32 num, len;
|
|
u64 pool;
|
|
|
|
ceph_decode_32_safe(p, end, num, bad);
|
|
dout(" %d pool names\n", num);
|
|
while (num--) {
|
|
ceph_decode_64_safe(p, end, pool, bad);
|
|
ceph_decode_32_safe(p, end, len, bad);
|
|
dout(" pool %llu len %d\n", pool, len);
|
|
ceph_decode_need(p, end, len, bad);
|
|
pi = __lookup_pg_pool(&map->pg_pools, pool);
|
|
if (pi) {
|
|
char *name = kstrndup(*p, len, GFP_NOFS);
|
|
|
|
if (!name)
|
|
return -ENOMEM;
|
|
kfree(pi->name);
|
|
pi->name = name;
|
|
dout(" name is %s\n", pi->name);
|
|
}
|
|
*p += len;
|
|
}
|
|
return 0;
|
|
|
|
bad:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* osd map
|
|
*/
|
|
struct ceph_osdmap *ceph_osdmap_alloc(void)
|
|
{
|
|
struct ceph_osdmap *map;
|
|
|
|
map = kzalloc(sizeof(*map), GFP_NOIO);
|
|
if (!map)
|
|
return NULL;
|
|
|
|
map->pg_pools = RB_ROOT;
|
|
map->pool_max = -1;
|
|
map->pg_temp = RB_ROOT;
|
|
map->primary_temp = RB_ROOT;
|
|
mutex_init(&map->crush_scratch_mutex);
|
|
|
|
return 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->primary_temp)) {
|
|
struct ceph_pg_mapping *pg =
|
|
rb_entry(rb_first(&map->primary_temp),
|
|
struct ceph_pg_mapping, node);
|
|
rb_erase(&pg->node, &map->primary_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->osd_primary_affinity);
|
|
kfree(map);
|
|
}
|
|
|
|
/*
|
|
* Adjust max_osd value, (re)allocate arrays.
|
|
*
|
|
* The new elements are properly initialized.
|
|
*/
|
|
static int osdmap_set_max_osd(struct ceph_osdmap *map, int max)
|
|
{
|
|
u8 *state;
|
|
u32 *weight;
|
|
struct ceph_entity_addr *addr;
|
|
int i;
|
|
|
|
state = krealloc(map->osd_state, max*sizeof(*state), GFP_NOFS);
|
|
if (!state)
|
|
return -ENOMEM;
|
|
map->osd_state = state;
|
|
|
|
weight = krealloc(map->osd_weight, max*sizeof(*weight), GFP_NOFS);
|
|
if (!weight)
|
|
return -ENOMEM;
|
|
map->osd_weight = weight;
|
|
|
|
addr = krealloc(map->osd_addr, max*sizeof(*addr), GFP_NOFS);
|
|
if (!addr)
|
|
return -ENOMEM;
|
|
map->osd_addr = addr;
|
|
|
|
for (i = map->max_osd; i < max; i++) {
|
|
map->osd_state[i] = 0;
|
|
map->osd_weight[i] = CEPH_OSD_OUT;
|
|
memset(map->osd_addr + i, 0, sizeof(*map->osd_addr));
|
|
}
|
|
|
|
if (map->osd_primary_affinity) {
|
|
u32 *affinity;
|
|
|
|
affinity = krealloc(map->osd_primary_affinity,
|
|
max*sizeof(*affinity), GFP_NOFS);
|
|
if (!affinity)
|
|
return -ENOMEM;
|
|
map->osd_primary_affinity = affinity;
|
|
|
|
for (i = map->max_osd; i < max; i++)
|
|
map->osd_primary_affinity[i] =
|
|
CEPH_OSD_DEFAULT_PRIMARY_AFFINITY;
|
|
}
|
|
|
|
map->max_osd = max;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define OSDMAP_WRAPPER_COMPAT_VER 7
|
|
#define OSDMAP_CLIENT_DATA_COMPAT_VER 1
|
|
|
|
/*
|
|
* Return 0 or error. On success, *v is set to 0 for old (v6) osdmaps,
|
|
* to struct_v of the client_data section for new (v7 and above)
|
|
* osdmaps.
|
|
*/
|
|
static int get_osdmap_client_data_v(void **p, void *end,
|
|
const char *prefix, u8 *v)
|
|
{
|
|
u8 struct_v;
|
|
|
|
ceph_decode_8_safe(p, end, struct_v, e_inval);
|
|
if (struct_v >= 7) {
|
|
u8 struct_compat;
|
|
|
|
ceph_decode_8_safe(p, end, struct_compat, e_inval);
|
|
if (struct_compat > OSDMAP_WRAPPER_COMPAT_VER) {
|
|
pr_warn("got v %d cv %d > %d of %s ceph_osdmap\n",
|
|
struct_v, struct_compat,
|
|
OSDMAP_WRAPPER_COMPAT_VER, prefix);
|
|
return -EINVAL;
|
|
}
|
|
*p += 4; /* ignore wrapper struct_len */
|
|
|
|
ceph_decode_8_safe(p, end, struct_v, e_inval);
|
|
ceph_decode_8_safe(p, end, struct_compat, e_inval);
|
|
if (struct_compat > OSDMAP_CLIENT_DATA_COMPAT_VER) {
|
|
pr_warn("got v %d cv %d > %d of %s ceph_osdmap client data\n",
|
|
struct_v, struct_compat,
|
|
OSDMAP_CLIENT_DATA_COMPAT_VER, prefix);
|
|
return -EINVAL;
|
|
}
|
|
*p += 4; /* ignore client data struct_len */
|
|
} else {
|
|
u16 version;
|
|
|
|
*p -= 1;
|
|
ceph_decode_16_safe(p, end, version, e_inval);
|
|
if (version < 6) {
|
|
pr_warn("got v %d < 6 of %s ceph_osdmap\n",
|
|
version, prefix);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* old osdmap enconding */
|
|
struct_v = 0;
|
|
}
|
|
|
|
*v = struct_v;
|
|
return 0;
|
|
|
|
e_inval:
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int __decode_pools(void **p, void *end, struct ceph_osdmap *map,
|
|
bool incremental)
|
|
{
|
|
u32 n;
|
|
|
|
ceph_decode_32_safe(p, end, n, e_inval);
|
|
while (n--) {
|
|
struct ceph_pg_pool_info *pi;
|
|
u64 pool;
|
|
int ret;
|
|
|
|
ceph_decode_64_safe(p, end, pool, e_inval);
|
|
|
|
pi = __lookup_pg_pool(&map->pg_pools, pool);
|
|
if (!incremental || !pi) {
|
|
pi = kzalloc(sizeof(*pi), GFP_NOFS);
|
|
if (!pi)
|
|
return -ENOMEM;
|
|
|
|
pi->id = pool;
|
|
|
|
ret = __insert_pg_pool(&map->pg_pools, pi);
|
|
if (ret) {
|
|
kfree(pi);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
ret = decode_pool(p, end, pi);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
|
|
e_inval:
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int decode_pools(void **p, void *end, struct ceph_osdmap *map)
|
|
{
|
|
return __decode_pools(p, end, map, false);
|
|
}
|
|
|
|
static int decode_new_pools(void **p, void *end, struct ceph_osdmap *map)
|
|
{
|
|
return __decode_pools(p, end, map, true);
|
|
}
|
|
|
|
static int __decode_pg_temp(void **p, void *end, struct ceph_osdmap *map,
|
|
bool incremental)
|
|
{
|
|
u32 n;
|
|
|
|
ceph_decode_32_safe(p, end, n, e_inval);
|
|
while (n--) {
|
|
struct ceph_pg pgid;
|
|
u32 len, i;
|
|
int ret;
|
|
|
|
ret = ceph_decode_pgid(p, end, &pgid);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ceph_decode_32_safe(p, end, len, e_inval);
|
|
|
|
ret = __remove_pg_mapping(&map->pg_temp, pgid);
|
|
BUG_ON(!incremental && ret != -ENOENT);
|
|
|
|
if (!incremental || len > 0) {
|
|
struct ceph_pg_mapping *pg;
|
|
|
|
ceph_decode_need(p, end, len*sizeof(u32), e_inval);
|
|
|
|
if (len > (UINT_MAX - sizeof(*pg)) / sizeof(u32))
|
|
return -EINVAL;
|
|
|
|
pg = kzalloc(sizeof(*pg) + len*sizeof(u32), GFP_NOFS);
|
|
if (!pg)
|
|
return -ENOMEM;
|
|
|
|
pg->pgid = pgid;
|
|
pg->pg_temp.len = len;
|
|
for (i = 0; i < len; i++)
|
|
pg->pg_temp.osds[i] = ceph_decode_32(p);
|
|
|
|
ret = __insert_pg_mapping(pg, &map->pg_temp);
|
|
if (ret) {
|
|
kfree(pg);
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
e_inval:
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int decode_pg_temp(void **p, void *end, struct ceph_osdmap *map)
|
|
{
|
|
return __decode_pg_temp(p, end, map, false);
|
|
}
|
|
|
|
static int decode_new_pg_temp(void **p, void *end, struct ceph_osdmap *map)
|
|
{
|
|
return __decode_pg_temp(p, end, map, true);
|
|
}
|
|
|
|
static int __decode_primary_temp(void **p, void *end, struct ceph_osdmap *map,
|
|
bool incremental)
|
|
{
|
|
u32 n;
|
|
|
|
ceph_decode_32_safe(p, end, n, e_inval);
|
|
while (n--) {
|
|
struct ceph_pg pgid;
|
|
u32 osd;
|
|
int ret;
|
|
|
|
ret = ceph_decode_pgid(p, end, &pgid);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ceph_decode_32_safe(p, end, osd, e_inval);
|
|
|
|
ret = __remove_pg_mapping(&map->primary_temp, pgid);
|
|
BUG_ON(!incremental && ret != -ENOENT);
|
|
|
|
if (!incremental || osd != (u32)-1) {
|
|
struct ceph_pg_mapping *pg;
|
|
|
|
pg = kzalloc(sizeof(*pg), GFP_NOFS);
|
|
if (!pg)
|
|
return -ENOMEM;
|
|
|
|
pg->pgid = pgid;
|
|
pg->primary_temp.osd = osd;
|
|
|
|
ret = __insert_pg_mapping(pg, &map->primary_temp);
|
|
if (ret) {
|
|
kfree(pg);
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
e_inval:
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int decode_primary_temp(void **p, void *end, struct ceph_osdmap *map)
|
|
{
|
|
return __decode_primary_temp(p, end, map, false);
|
|
}
|
|
|
|
static int decode_new_primary_temp(void **p, void *end,
|
|
struct ceph_osdmap *map)
|
|
{
|
|
return __decode_primary_temp(p, end, map, true);
|
|
}
|
|
|
|
u32 ceph_get_primary_affinity(struct ceph_osdmap *map, int osd)
|
|
{
|
|
BUG_ON(osd >= map->max_osd);
|
|
|
|
if (!map->osd_primary_affinity)
|
|
return CEPH_OSD_DEFAULT_PRIMARY_AFFINITY;
|
|
|
|
return map->osd_primary_affinity[osd];
|
|
}
|
|
|
|
static int set_primary_affinity(struct ceph_osdmap *map, int osd, u32 aff)
|
|
{
|
|
BUG_ON(osd >= map->max_osd);
|
|
|
|
if (!map->osd_primary_affinity) {
|
|
int i;
|
|
|
|
map->osd_primary_affinity = kmalloc(map->max_osd*sizeof(u32),
|
|
GFP_NOFS);
|
|
if (!map->osd_primary_affinity)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < map->max_osd; i++)
|
|
map->osd_primary_affinity[i] =
|
|
CEPH_OSD_DEFAULT_PRIMARY_AFFINITY;
|
|
}
|
|
|
|
map->osd_primary_affinity[osd] = aff;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int decode_primary_affinity(void **p, void *end,
|
|
struct ceph_osdmap *map)
|
|
{
|
|
u32 len, i;
|
|
|
|
ceph_decode_32_safe(p, end, len, e_inval);
|
|
if (len == 0) {
|
|
kfree(map->osd_primary_affinity);
|
|
map->osd_primary_affinity = NULL;
|
|
return 0;
|
|
}
|
|
if (len != map->max_osd)
|
|
goto e_inval;
|
|
|
|
ceph_decode_need(p, end, map->max_osd*sizeof(u32), e_inval);
|
|
|
|
for (i = 0; i < map->max_osd; i++) {
|
|
int ret;
|
|
|
|
ret = set_primary_affinity(map, i, ceph_decode_32(p));
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
|
|
e_inval:
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int decode_new_primary_affinity(void **p, void *end,
|
|
struct ceph_osdmap *map)
|
|
{
|
|
u32 n;
|
|
|
|
ceph_decode_32_safe(p, end, n, e_inval);
|
|
while (n--) {
|
|
u32 osd, aff;
|
|
int ret;
|
|
|
|
ceph_decode_32_safe(p, end, osd, e_inval);
|
|
ceph_decode_32_safe(p, end, aff, e_inval);
|
|
|
|
ret = set_primary_affinity(map, osd, aff);
|
|
if (ret)
|
|
return ret;
|
|
|
|
pr_info("osd%d primary-affinity 0x%x\n", osd, aff);
|
|
}
|
|
|
|
return 0;
|
|
|
|
e_inval:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* decode a full map.
|
|
*/
|
|
static int osdmap_decode(void **p, void *end, struct ceph_osdmap *map)
|
|
{
|
|
u8 struct_v;
|
|
u32 epoch = 0;
|
|
void *start = *p;
|
|
u32 max;
|
|
u32 len, i;
|
|
int err;
|
|
|
|
dout("%s %p to %p len %d\n", __func__, *p, end, (int)(end - *p));
|
|
|
|
err = get_osdmap_client_data_v(p, end, "full", &struct_v);
|
|
if (err)
|
|
goto bad;
|
|
|
|
/* fsid, epoch, created, modified */
|
|
ceph_decode_need(p, end, sizeof(map->fsid) + sizeof(u32) +
|
|
sizeof(map->created) + sizeof(map->modified), e_inval);
|
|
ceph_decode_copy(p, &map->fsid, sizeof(map->fsid));
|
|
epoch = map->epoch = ceph_decode_32(p);
|
|
ceph_decode_copy(p, &map->created, sizeof(map->created));
|
|
ceph_decode_copy(p, &map->modified, sizeof(map->modified));
|
|
|
|
/* pools */
|
|
err = decode_pools(p, end, map);
|
|
if (err)
|
|
goto bad;
|
|
|
|
/* pool_name */
|
|
err = decode_pool_names(p, end, map);
|
|
if (err)
|
|
goto bad;
|
|
|
|
ceph_decode_32_safe(p, end, map->pool_max, e_inval);
|
|
|
|
ceph_decode_32_safe(p, end, map->flags, e_inval);
|
|
|
|
/* max_osd */
|
|
ceph_decode_32_safe(p, end, max, e_inval);
|
|
|
|
/* (re)alloc osd arrays */
|
|
err = osdmap_set_max_osd(map, max);
|
|
if (err)
|
|
goto bad;
|
|
|
|
/* osd_state, osd_weight, osd_addrs->client_addr */
|
|
ceph_decode_need(p, end, 3*sizeof(u32) +
|
|
map->max_osd*(1 + sizeof(*map->osd_weight) +
|
|
sizeof(*map->osd_addr)), e_inval);
|
|
|
|
if (ceph_decode_32(p) != map->max_osd)
|
|
goto e_inval;
|
|
|
|
ceph_decode_copy(p, map->osd_state, map->max_osd);
|
|
|
|
if (ceph_decode_32(p) != map->max_osd)
|
|
goto e_inval;
|
|
|
|
for (i = 0; i < map->max_osd; i++)
|
|
map->osd_weight[i] = ceph_decode_32(p);
|
|
|
|
if (ceph_decode_32(p) != map->max_osd)
|
|
goto e_inval;
|
|
|
|
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 */
|
|
err = decode_pg_temp(p, end, map);
|
|
if (err)
|
|
goto bad;
|
|
|
|
/* primary_temp */
|
|
if (struct_v >= 1) {
|
|
err = decode_primary_temp(p, end, map);
|
|
if (err)
|
|
goto bad;
|
|
}
|
|
|
|
/* primary_affinity */
|
|
if (struct_v >= 2) {
|
|
err = decode_primary_affinity(p, end, map);
|
|
if (err)
|
|
goto bad;
|
|
} else {
|
|
/* XXX can this happen? */
|
|
kfree(map->osd_primary_affinity);
|
|
map->osd_primary_affinity = NULL;
|
|
}
|
|
|
|
/* crush */
|
|
ceph_decode_32_safe(p, end, len, e_inval);
|
|
map->crush = crush_decode(*p, min(*p + len, end));
|
|
if (IS_ERR(map->crush)) {
|
|
err = PTR_ERR(map->crush);
|
|
map->crush = NULL;
|
|
goto bad;
|
|
}
|
|
*p += len;
|
|
|
|
/* ignore the rest */
|
|
*p = end;
|
|
|
|
dout("full osdmap epoch %d max_osd %d\n", map->epoch, map->max_osd);
|
|
return 0;
|
|
|
|
e_inval:
|
|
err = -EINVAL;
|
|
bad:
|
|
pr_err("corrupt full osdmap (%d) epoch %d off %d (%p of %p-%p)\n",
|
|
err, epoch, (int)(*p - start), *p, start, end);
|
|
print_hex_dump(KERN_DEBUG, "osdmap: ",
|
|
DUMP_PREFIX_OFFSET, 16, 1,
|
|
start, end - start, true);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Allocate and decode a full map.
|
|
*/
|
|
struct ceph_osdmap *ceph_osdmap_decode(void **p, void *end)
|
|
{
|
|
struct ceph_osdmap *map;
|
|
int ret;
|
|
|
|
map = ceph_osdmap_alloc();
|
|
if (!map)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
ret = osdmap_decode(p, end, map);
|
|
if (ret) {
|
|
ceph_osdmap_destroy(map);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
return map;
|
|
}
|
|
|
|
/*
|
|
* Encoding order is (new_up_client, new_state, new_weight). Need to
|
|
* apply in the (new_weight, new_state, new_up_client) order, because
|
|
* an incremental map may look like e.g.
|
|
*
|
|
* new_up_client: { osd=6, addr=... } # set osd_state and addr
|
|
* new_state: { osd=6, xorstate=EXISTS } # clear osd_state
|
|
*/
|
|
static int decode_new_up_state_weight(void **p, void *end,
|
|
struct ceph_osdmap *map)
|
|
{
|
|
void *new_up_client;
|
|
void *new_state;
|
|
void *new_weight_end;
|
|
u32 len;
|
|
|
|
new_up_client = *p;
|
|
ceph_decode_32_safe(p, end, len, e_inval);
|
|
len *= sizeof(u32) + sizeof(struct ceph_entity_addr);
|
|
ceph_decode_need(p, end, len, e_inval);
|
|
*p += len;
|
|
|
|
new_state = *p;
|
|
ceph_decode_32_safe(p, end, len, e_inval);
|
|
len *= sizeof(u32) + sizeof(u8);
|
|
ceph_decode_need(p, end, len, e_inval);
|
|
*p += len;
|
|
|
|
/* new_weight */
|
|
ceph_decode_32_safe(p, end, len, e_inval);
|
|
while (len--) {
|
|
s32 osd;
|
|
u32 w;
|
|
|
|
ceph_decode_need(p, end, 2*sizeof(u32), e_inval);
|
|
osd = ceph_decode_32(p);
|
|
w = ceph_decode_32(p);
|
|
BUG_ON(osd >= map->max_osd);
|
|
pr_info("osd%d weight 0x%x %s\n", osd, w,
|
|
w == CEPH_OSD_IN ? "(in)" :
|
|
(w == CEPH_OSD_OUT ? "(out)" : ""));
|
|
map->osd_weight[osd] = w;
|
|
|
|
/*
|
|
* If we are marking in, set the EXISTS, and clear the
|
|
* AUTOOUT and NEW bits.
|
|
*/
|
|
if (w) {
|
|
map->osd_state[osd] |= CEPH_OSD_EXISTS;
|
|
map->osd_state[osd] &= ~(CEPH_OSD_AUTOOUT |
|
|
CEPH_OSD_NEW);
|
|
}
|
|
}
|
|
new_weight_end = *p;
|
|
|
|
/* new_state (up/down) */
|
|
*p = new_state;
|
|
len = ceph_decode_32(p);
|
|
while (len--) {
|
|
s32 osd;
|
|
u8 xorstate;
|
|
int ret;
|
|
|
|
osd = ceph_decode_32(p);
|
|
xorstate = ceph_decode_8(p);
|
|
if (xorstate == 0)
|
|
xorstate = CEPH_OSD_UP;
|
|
BUG_ON(osd >= map->max_osd);
|
|
if ((map->osd_state[osd] & CEPH_OSD_UP) &&
|
|
(xorstate & CEPH_OSD_UP))
|
|
pr_info("osd%d down\n", osd);
|
|
if ((map->osd_state[osd] & CEPH_OSD_EXISTS) &&
|
|
(xorstate & CEPH_OSD_EXISTS)) {
|
|
pr_info("osd%d does not exist\n", osd);
|
|
map->osd_weight[osd] = CEPH_OSD_IN;
|
|
ret = set_primary_affinity(map, osd,
|
|
CEPH_OSD_DEFAULT_PRIMARY_AFFINITY);
|
|
if (ret)
|
|
return ret;
|
|
memset(map->osd_addr + osd, 0, sizeof(*map->osd_addr));
|
|
map->osd_state[osd] = 0;
|
|
} else {
|
|
map->osd_state[osd] ^= xorstate;
|
|
}
|
|
}
|
|
|
|
/* new_up_client */
|
|
*p = new_up_client;
|
|
len = ceph_decode_32(p);
|
|
while (len--) {
|
|
s32 osd;
|
|
struct ceph_entity_addr addr;
|
|
|
|
osd = ceph_decode_32(p);
|
|
ceph_decode_copy(p, &addr, sizeof(addr));
|
|
ceph_decode_addr(&addr);
|
|
BUG_ON(osd >= map->max_osd);
|
|
pr_info("osd%d up\n", osd);
|
|
map->osd_state[osd] |= CEPH_OSD_EXISTS | CEPH_OSD_UP;
|
|
map->osd_addr[osd] = addr;
|
|
}
|
|
|
|
*p = new_weight_end;
|
|
return 0;
|
|
|
|
e_inval:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* decode and apply an incremental map update.
|
|
*/
|
|
struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
|
|
struct ceph_osdmap *map)
|
|
{
|
|
struct crush_map *newcrush = NULL;
|
|
struct ceph_fsid fsid;
|
|
u32 epoch = 0;
|
|
struct ceph_timespec modified;
|
|
s32 len;
|
|
u64 pool;
|
|
__s64 new_pool_max;
|
|
__s32 new_flags, max;
|
|
void *start = *p;
|
|
int err;
|
|
u8 struct_v;
|
|
|
|
dout("%s %p to %p len %d\n", __func__, *p, end, (int)(end - *p));
|
|
|
|
err = get_osdmap_client_data_v(p, end, "inc", &struct_v);
|
|
if (err)
|
|
goto bad;
|
|
|
|
/* fsid, epoch, modified, new_pool_max, new_flags */
|
|
ceph_decode_need(p, end, sizeof(fsid) + sizeof(u32) + sizeof(modified) +
|
|
sizeof(u64) + sizeof(u32), e_inval);
|
|
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_64(p);
|
|
new_flags = ceph_decode_32(p);
|
|
|
|
/* full map? */
|
|
ceph_decode_32_safe(p, end, len, e_inval);
|
|
if (len > 0) {
|
|
dout("apply_incremental full map len %d, %p to %p\n",
|
|
len, *p, end);
|
|
return ceph_osdmap_decode(p, min(*p+len, end));
|
|
}
|
|
|
|
/* new crush? */
|
|
ceph_decode_32_safe(p, end, len, e_inval);
|
|
if (len > 0) {
|
|
newcrush = crush_decode(*p, min(*p+len, end));
|
|
if (IS_ERR(newcrush)) {
|
|
err = PTR_ERR(newcrush);
|
|
newcrush = NULL;
|
|
goto bad;
|
|
}
|
|
*p += len;
|
|
}
|
|
|
|
/* new flags? */
|
|
if (new_flags >= 0)
|
|
map->flags = new_flags;
|
|
if (new_pool_max >= 0)
|
|
map->pool_max = new_pool_max;
|
|
|
|
/* new max? */
|
|
ceph_decode_32_safe(p, end, max, e_inval);
|
|
if (max >= 0) {
|
|
err = osdmap_set_max_osd(map, max);
|
|
if (err)
|
|
goto bad;
|
|
}
|
|
|
|
map->epoch++;
|
|
map->modified = modified;
|
|
if (newcrush) {
|
|
if (map->crush)
|
|
crush_destroy(map->crush);
|
|
map->crush = newcrush;
|
|
newcrush = NULL;
|
|
}
|
|
|
|
/* new_pools */
|
|
err = decode_new_pools(p, end, map);
|
|
if (err)
|
|
goto bad;
|
|
|
|
/* new_pool_names */
|
|
err = decode_pool_names(p, end, map);
|
|
if (err)
|
|
goto bad;
|
|
|
|
/* old_pool */
|
|
ceph_decode_32_safe(p, end, len, e_inval);
|
|
while (len--) {
|
|
struct ceph_pg_pool_info *pi;
|
|
|
|
ceph_decode_64_safe(p, end, pool, e_inval);
|
|
pi = __lookup_pg_pool(&map->pg_pools, pool);
|
|
if (pi)
|
|
__remove_pg_pool(&map->pg_pools, pi);
|
|
}
|
|
|
|
/* new_up_client, new_state, new_weight */
|
|
err = decode_new_up_state_weight(p, end, map);
|
|
if (err)
|
|
goto bad;
|
|
|
|
/* new_pg_temp */
|
|
err = decode_new_pg_temp(p, end, map);
|
|
if (err)
|
|
goto bad;
|
|
|
|
/* new_primary_temp */
|
|
if (struct_v >= 1) {
|
|
err = decode_new_primary_temp(p, end, map);
|
|
if (err)
|
|
goto bad;
|
|
}
|
|
|
|
/* new_primary_affinity */
|
|
if (struct_v >= 2) {
|
|
err = decode_new_primary_affinity(p, end, map);
|
|
if (err)
|
|
goto bad;
|
|
}
|
|
|
|
/* ignore the rest */
|
|
*p = end;
|
|
|
|
dout("inc osdmap epoch %d max_osd %d\n", map->epoch, map->max_osd);
|
|
return map;
|
|
|
|
e_inval:
|
|
err = -EINVAL;
|
|
bad:
|
|
pr_err("corrupt inc osdmap (%d) epoch %d off %d (%p of %p-%p)\n",
|
|
err, 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);
|
|
}
|
|
|
|
void ceph_oid_copy(struct ceph_object_id *dest,
|
|
const struct ceph_object_id *src)
|
|
{
|
|
WARN_ON(!ceph_oid_empty(dest));
|
|
|
|
if (src->name != src->inline_name) {
|
|
/* very rare, see ceph_object_id definition */
|
|
dest->name = kmalloc(src->name_len + 1,
|
|
GFP_NOIO | __GFP_NOFAIL);
|
|
}
|
|
|
|
memcpy(dest->name, src->name, src->name_len + 1);
|
|
dest->name_len = src->name_len;
|
|
}
|
|
EXPORT_SYMBOL(ceph_oid_copy);
|
|
|
|
static __printf(2, 0)
|
|
int oid_printf_vargs(struct ceph_object_id *oid, const char *fmt, va_list ap)
|
|
{
|
|
int len;
|
|
|
|
WARN_ON(!ceph_oid_empty(oid));
|
|
|
|
len = vsnprintf(oid->inline_name, sizeof(oid->inline_name), fmt, ap);
|
|
if (len >= sizeof(oid->inline_name))
|
|
return len;
|
|
|
|
oid->name_len = len;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* If oid doesn't fit into inline buffer, BUG.
|
|
*/
|
|
void ceph_oid_printf(struct ceph_object_id *oid, const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
BUG_ON(oid_printf_vargs(oid, fmt, ap));
|
|
va_end(ap);
|
|
}
|
|
EXPORT_SYMBOL(ceph_oid_printf);
|
|
|
|
static __printf(3, 0)
|
|
int oid_aprintf_vargs(struct ceph_object_id *oid, gfp_t gfp,
|
|
const char *fmt, va_list ap)
|
|
{
|
|
va_list aq;
|
|
int len;
|
|
|
|
va_copy(aq, ap);
|
|
len = oid_printf_vargs(oid, fmt, aq);
|
|
va_end(aq);
|
|
|
|
if (len) {
|
|
char *external_name;
|
|
|
|
external_name = kmalloc(len + 1, gfp);
|
|
if (!external_name)
|
|
return -ENOMEM;
|
|
|
|
oid->name = external_name;
|
|
WARN_ON(vsnprintf(oid->name, len + 1, fmt, ap) != len);
|
|
oid->name_len = len;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* If oid doesn't fit into inline buffer, allocate.
|
|
*/
|
|
int ceph_oid_aprintf(struct ceph_object_id *oid, gfp_t gfp,
|
|
const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
int ret;
|
|
|
|
va_start(ap, fmt);
|
|
ret = oid_aprintf_vargs(oid, gfp, fmt, ap);
|
|
va_end(ap);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ceph_oid_aprintf);
|
|
|
|
void ceph_oid_destroy(struct ceph_object_id *oid)
|
|
{
|
|
if (oid->name != oid->inline_name)
|
|
kfree(oid->name);
|
|
}
|
|
EXPORT_SYMBOL(ceph_oid_destroy);
|
|
|
|
/*
|
|
* osds only
|
|
*/
|
|
static bool __osds_equal(const struct ceph_osds *lhs,
|
|
const struct ceph_osds *rhs)
|
|
{
|
|
if (lhs->size == rhs->size &&
|
|
!memcmp(lhs->osds, rhs->osds, rhs->size * sizeof(rhs->osds[0])))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
* osds + primary
|
|
*/
|
|
static bool osds_equal(const struct ceph_osds *lhs,
|
|
const struct ceph_osds *rhs)
|
|
{
|
|
if (__osds_equal(lhs, rhs) &&
|
|
lhs->primary == rhs->primary)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
static bool osds_valid(const struct ceph_osds *set)
|
|
{
|
|
/* non-empty set */
|
|
if (set->size > 0 && set->primary >= 0)
|
|
return true;
|
|
|
|
/* empty can_shift_osds set */
|
|
if (!set->size && set->primary == -1)
|
|
return true;
|
|
|
|
/* empty !can_shift_osds set - all NONE */
|
|
if (set->size > 0 && set->primary == -1) {
|
|
int i;
|
|
|
|
for (i = 0; i < set->size; i++) {
|
|
if (set->osds[i] != CRUSH_ITEM_NONE)
|
|
break;
|
|
}
|
|
if (i == set->size)
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void ceph_osds_copy(struct ceph_osds *dest, const struct ceph_osds *src)
|
|
{
|
|
memcpy(dest->osds, src->osds, src->size * sizeof(src->osds[0]));
|
|
dest->size = src->size;
|
|
dest->primary = src->primary;
|
|
}
|
|
|
|
static bool is_split(const struct ceph_pg *pgid,
|
|
u32 old_pg_num,
|
|
u32 new_pg_num)
|
|
{
|
|
int old_bits = calc_bits_of(old_pg_num);
|
|
int old_mask = (1 << old_bits) - 1;
|
|
int n;
|
|
|
|
WARN_ON(pgid->seed >= old_pg_num);
|
|
if (new_pg_num <= old_pg_num)
|
|
return false;
|
|
|
|
for (n = 1; ; n++) {
|
|
int next_bit = n << (old_bits - 1);
|
|
u32 s = next_bit | pgid->seed;
|
|
|
|
if (s < old_pg_num || s == pgid->seed)
|
|
continue;
|
|
if (s >= new_pg_num)
|
|
break;
|
|
|
|
s = ceph_stable_mod(s, old_pg_num, old_mask);
|
|
if (s == pgid->seed)
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool ceph_is_new_interval(const struct ceph_osds *old_acting,
|
|
const struct ceph_osds *new_acting,
|
|
const struct ceph_osds *old_up,
|
|
const struct ceph_osds *new_up,
|
|
int old_size,
|
|
int new_size,
|
|
int old_min_size,
|
|
int new_min_size,
|
|
u32 old_pg_num,
|
|
u32 new_pg_num,
|
|
bool old_sort_bitwise,
|
|
bool new_sort_bitwise,
|
|
const struct ceph_pg *pgid)
|
|
{
|
|
return !osds_equal(old_acting, new_acting) ||
|
|
!osds_equal(old_up, new_up) ||
|
|
old_size != new_size ||
|
|
old_min_size != new_min_size ||
|
|
is_split(pgid, old_pg_num, new_pg_num) ||
|
|
old_sort_bitwise != new_sort_bitwise;
|
|
}
|
|
|
|
static int calc_pg_rank(int osd, const struct ceph_osds *acting)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < acting->size; i++) {
|
|
if (acting->osds[i] == osd)
|
|
return i;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static bool primary_changed(const struct ceph_osds *old_acting,
|
|
const struct ceph_osds *new_acting)
|
|
{
|
|
if (!old_acting->size && !new_acting->size)
|
|
return false; /* both still empty */
|
|
|
|
if (!old_acting->size ^ !new_acting->size)
|
|
return true; /* was empty, now not, or vice versa */
|
|
|
|
if (old_acting->primary != new_acting->primary)
|
|
return true; /* primary changed */
|
|
|
|
if (calc_pg_rank(old_acting->primary, old_acting) !=
|
|
calc_pg_rank(new_acting->primary, new_acting))
|
|
return true;
|
|
|
|
return false; /* same primary (tho replicas may have changed) */
|
|
}
|
|
|
|
bool ceph_osds_changed(const struct ceph_osds *old_acting,
|
|
const struct ceph_osds *new_acting,
|
|
bool any_change)
|
|
{
|
|
if (primary_changed(old_acting, new_acting))
|
|
return true;
|
|
|
|
if (any_change && !__osds_equal(old_acting, new_acting))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
int ceph_calc_file_object_mapping(struct ceph_file_layout *layout,
|
|
u64 off, u64 len,
|
|
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, len,
|
|
osize, su);
|
|
if (su == 0 || sc == 0)
|
|
goto invalid;
|
|
su_per_object = osize / su;
|
|
if (su_per_object == 0)
|
|
goto invalid;
|
|
dout("osize %u / su %u = su_per_object %u\n", osize, su,
|
|
su_per_object);
|
|
|
|
if ((su & ~PAGE_MASK) != 0)
|
|
goto invalid;
|
|
|
|
/* 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 (len) or
|
|
* the remainder of the current stripe being written to.
|
|
*/
|
|
*oxlen = min_t(u64, len, su - su_offset);
|
|
|
|
dout(" obj extent %llu~%llu\n", *oxoff, *oxlen);
|
|
return 0;
|
|
|
|
invalid:
|
|
dout(" invalid layout\n");
|
|
*ono = 0;
|
|
*oxoff = 0;
|
|
*oxlen = 0;
|
|
return -EINVAL;
|
|
}
|
|
EXPORT_SYMBOL(ceph_calc_file_object_mapping);
|
|
|
|
/*
|
|
* Map an object into a PG.
|
|
*
|
|
* Should only be called with target_oid and target_oloc (as opposed to
|
|
* base_oid and base_oloc), since tiering isn't taken into account.
|
|
*/
|
|
int ceph_object_locator_to_pg(struct ceph_osdmap *osdmap,
|
|
struct ceph_object_id *oid,
|
|
struct ceph_object_locator *oloc,
|
|
struct ceph_pg *raw_pgid)
|
|
{
|
|
struct ceph_pg_pool_info *pi;
|
|
|
|
pi = ceph_pg_pool_by_id(osdmap, oloc->pool);
|
|
if (!pi)
|
|
return -ENOENT;
|
|
|
|
raw_pgid->pool = oloc->pool;
|
|
raw_pgid->seed = ceph_str_hash(pi->object_hash, oid->name,
|
|
oid->name_len);
|
|
|
|
dout("%s %s -> raw_pgid %llu.%x\n", __func__, oid->name,
|
|
raw_pgid->pool, raw_pgid->seed);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(ceph_object_locator_to_pg);
|
|
|
|
/*
|
|
* Map a raw PG (full precision ps) into an actual PG.
|
|
*/
|
|
static void raw_pg_to_pg(struct ceph_pg_pool_info *pi,
|
|
const struct ceph_pg *raw_pgid,
|
|
struct ceph_pg *pgid)
|
|
{
|
|
pgid->pool = raw_pgid->pool;
|
|
pgid->seed = ceph_stable_mod(raw_pgid->seed, pi->pg_num,
|
|
pi->pg_num_mask);
|
|
}
|
|
|
|
/*
|
|
* Map a raw PG (full precision ps) into a placement ps (placement
|
|
* seed). Include pool id in that value so that different pools don't
|
|
* use the same seeds.
|
|
*/
|
|
static u32 raw_pg_to_pps(struct ceph_pg_pool_info *pi,
|
|
const struct ceph_pg *raw_pgid)
|
|
{
|
|
if (pi->flags & CEPH_POOL_FLAG_HASHPSPOOL) {
|
|
/* hash pool id and seed so that pool PGs do not overlap */
|
|
return crush_hash32_2(CRUSH_HASH_RJENKINS1,
|
|
ceph_stable_mod(raw_pgid->seed,
|
|
pi->pgp_num,
|
|
pi->pgp_num_mask),
|
|
raw_pgid->pool);
|
|
} else {
|
|
/*
|
|
* legacy behavior: add ps and pool together. this is
|
|
* not a great approach because the PGs from each pool
|
|
* will overlap on top of each other: 0.5 == 1.4 ==
|
|
* 2.3 == ...
|
|
*/
|
|
return ceph_stable_mod(raw_pgid->seed, pi->pgp_num,
|
|
pi->pgp_num_mask) +
|
|
(unsigned)raw_pgid->pool;
|
|
}
|
|
}
|
|
|
|
static int do_crush(struct ceph_osdmap *map, int ruleno, int x,
|
|
int *result, int result_max,
|
|
const __u32 *weight, int weight_max)
|
|
{
|
|
int r;
|
|
|
|
BUG_ON(result_max > CEPH_PG_MAX_SIZE);
|
|
|
|
mutex_lock(&map->crush_scratch_mutex);
|
|
r = crush_do_rule(map->crush, ruleno, x, result, result_max,
|
|
weight, weight_max, map->crush_scratch_ary);
|
|
mutex_unlock(&map->crush_scratch_mutex);
|
|
|
|
return r;
|
|
}
|
|
|
|
/*
|
|
* Calculate raw set (CRUSH output) for given PG. The result may
|
|
* contain nonexistent OSDs. ->primary is undefined for a raw set.
|
|
*
|
|
* Placement seed (CRUSH input) is returned through @ppps.
|
|
*/
|
|
static void pg_to_raw_osds(struct ceph_osdmap *osdmap,
|
|
struct ceph_pg_pool_info *pi,
|
|
const struct ceph_pg *raw_pgid,
|
|
struct ceph_osds *raw,
|
|
u32 *ppps)
|
|
{
|
|
u32 pps = raw_pg_to_pps(pi, raw_pgid);
|
|
int ruleno;
|
|
int len;
|
|
|
|
ceph_osds_init(raw);
|
|
if (ppps)
|
|
*ppps = pps;
|
|
|
|
ruleno = crush_find_rule(osdmap->crush, pi->crush_ruleset, pi->type,
|
|
pi->size);
|
|
if (ruleno < 0) {
|
|
pr_err("no crush rule: pool %lld ruleset %d type %d size %d\n",
|
|
pi->id, pi->crush_ruleset, pi->type, pi->size);
|
|
return;
|
|
}
|
|
|
|
len = do_crush(osdmap, ruleno, pps, raw->osds,
|
|
min_t(int, pi->size, ARRAY_SIZE(raw->osds)),
|
|
osdmap->osd_weight, osdmap->max_osd);
|
|
if (len < 0) {
|
|
pr_err("error %d from crush rule %d: pool %lld ruleset %d type %d size %d\n",
|
|
len, ruleno, pi->id, pi->crush_ruleset, pi->type,
|
|
pi->size);
|
|
return;
|
|
}
|
|
|
|
raw->size = len;
|
|
}
|
|
|
|
/*
|
|
* Given raw set, calculate up set and up primary. By definition of an
|
|
* up set, the result won't contain nonexistent or down OSDs.
|
|
*
|
|
* This is done in-place - on return @set is the up set. If it's
|
|
* empty, ->primary will remain undefined.
|
|
*/
|
|
static void raw_to_up_osds(struct ceph_osdmap *osdmap,
|
|
struct ceph_pg_pool_info *pi,
|
|
struct ceph_osds *set)
|
|
{
|
|
int i;
|
|
|
|
/* ->primary is undefined for a raw set */
|
|
BUG_ON(set->primary != -1);
|
|
|
|
if (ceph_can_shift_osds(pi)) {
|
|
int removed = 0;
|
|
|
|
/* shift left */
|
|
for (i = 0; i < set->size; i++) {
|
|
if (ceph_osd_is_down(osdmap, set->osds[i])) {
|
|
removed++;
|
|
continue;
|
|
}
|
|
if (removed)
|
|
set->osds[i - removed] = set->osds[i];
|
|
}
|
|
set->size -= removed;
|
|
if (set->size > 0)
|
|
set->primary = set->osds[0];
|
|
} else {
|
|
/* set down/dne devices to NONE */
|
|
for (i = set->size - 1; i >= 0; i--) {
|
|
if (ceph_osd_is_down(osdmap, set->osds[i]))
|
|
set->osds[i] = CRUSH_ITEM_NONE;
|
|
else
|
|
set->primary = set->osds[i];
|
|
}
|
|
}
|
|
}
|
|
|
|
static void apply_primary_affinity(struct ceph_osdmap *osdmap,
|
|
struct ceph_pg_pool_info *pi,
|
|
u32 pps,
|
|
struct ceph_osds *up)
|
|
{
|
|
int i;
|
|
int pos = -1;
|
|
|
|
/*
|
|
* Do we have any non-default primary_affinity values for these
|
|
* osds?
|
|
*/
|
|
if (!osdmap->osd_primary_affinity)
|
|
return;
|
|
|
|
for (i = 0; i < up->size; i++) {
|
|
int osd = up->osds[i];
|
|
|
|
if (osd != CRUSH_ITEM_NONE &&
|
|
osdmap->osd_primary_affinity[osd] !=
|
|
CEPH_OSD_DEFAULT_PRIMARY_AFFINITY) {
|
|
break;
|
|
}
|
|
}
|
|
if (i == up->size)
|
|
return;
|
|
|
|
/*
|
|
* Pick the primary. Feed both the seed (for the pg) and the
|
|
* osd into the hash/rng so that a proportional fraction of an
|
|
* osd's pgs get rejected as primary.
|
|
*/
|
|
for (i = 0; i < up->size; i++) {
|
|
int osd = up->osds[i];
|
|
u32 aff;
|
|
|
|
if (osd == CRUSH_ITEM_NONE)
|
|
continue;
|
|
|
|
aff = osdmap->osd_primary_affinity[osd];
|
|
if (aff < CEPH_OSD_MAX_PRIMARY_AFFINITY &&
|
|
(crush_hash32_2(CRUSH_HASH_RJENKINS1,
|
|
pps, osd) >> 16) >= aff) {
|
|
/*
|
|
* We chose not to use this primary. Note it
|
|
* anyway as a fallback in case we don't pick
|
|
* anyone else, but keep looking.
|
|
*/
|
|
if (pos < 0)
|
|
pos = i;
|
|
} else {
|
|
pos = i;
|
|
break;
|
|
}
|
|
}
|
|
if (pos < 0)
|
|
return;
|
|
|
|
up->primary = up->osds[pos];
|
|
|
|
if (ceph_can_shift_osds(pi) && pos > 0) {
|
|
/* move the new primary to the front */
|
|
for (i = pos; i > 0; i--)
|
|
up->osds[i] = up->osds[i - 1];
|
|
up->osds[0] = up->primary;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Get pg_temp and primary_temp mappings for given PG.
|
|
*
|
|
* Note that a PG may have none, only pg_temp, only primary_temp or
|
|
* both pg_temp and primary_temp mappings. This means @temp isn't
|
|
* always a valid OSD set on return: in the "only primary_temp" case,
|
|
* @temp will have its ->primary >= 0 but ->size == 0.
|
|
*/
|
|
static void get_temp_osds(struct ceph_osdmap *osdmap,
|
|
struct ceph_pg_pool_info *pi,
|
|
const struct ceph_pg *raw_pgid,
|
|
struct ceph_osds *temp)
|
|
{
|
|
struct ceph_pg pgid;
|
|
struct ceph_pg_mapping *pg;
|
|
int i;
|
|
|
|
raw_pg_to_pg(pi, raw_pgid, &pgid);
|
|
ceph_osds_init(temp);
|
|
|
|
/* pg_temp? */
|
|
pg = __lookup_pg_mapping(&osdmap->pg_temp, pgid);
|
|
if (pg) {
|
|
for (i = 0; i < pg->pg_temp.len; i++) {
|
|
if (ceph_osd_is_down(osdmap, pg->pg_temp.osds[i])) {
|
|
if (ceph_can_shift_osds(pi))
|
|
continue;
|
|
|
|
temp->osds[temp->size++] = CRUSH_ITEM_NONE;
|
|
} else {
|
|
temp->osds[temp->size++] = pg->pg_temp.osds[i];
|
|
}
|
|
}
|
|
|
|
/* apply pg_temp's primary */
|
|
for (i = 0; i < temp->size; i++) {
|
|
if (temp->osds[i] != CRUSH_ITEM_NONE) {
|
|
temp->primary = temp->osds[i];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* primary_temp? */
|
|
pg = __lookup_pg_mapping(&osdmap->primary_temp, pgid);
|
|
if (pg)
|
|
temp->primary = pg->primary_temp.osd;
|
|
}
|
|
|
|
/*
|
|
* Map a PG to its acting set as well as its up set.
|
|
*
|
|
* Acting set is used for data mapping purposes, while up set can be
|
|
* recorded for detecting interval changes and deciding whether to
|
|
* resend a request.
|
|
*/
|
|
void ceph_pg_to_up_acting_osds(struct ceph_osdmap *osdmap,
|
|
const struct ceph_pg *raw_pgid,
|
|
struct ceph_osds *up,
|
|
struct ceph_osds *acting)
|
|
{
|
|
struct ceph_pg_pool_info *pi;
|
|
u32 pps;
|
|
|
|
pi = ceph_pg_pool_by_id(osdmap, raw_pgid->pool);
|
|
if (!pi) {
|
|
ceph_osds_init(up);
|
|
ceph_osds_init(acting);
|
|
goto out;
|
|
}
|
|
|
|
pg_to_raw_osds(osdmap, pi, raw_pgid, up, &pps);
|
|
raw_to_up_osds(osdmap, pi, up);
|
|
apply_primary_affinity(osdmap, pi, pps, up);
|
|
get_temp_osds(osdmap, pi, raw_pgid, acting);
|
|
if (!acting->size) {
|
|
memcpy(acting->osds, up->osds, up->size * sizeof(up->osds[0]));
|
|
acting->size = up->size;
|
|
if (acting->primary == -1)
|
|
acting->primary = up->primary;
|
|
}
|
|
out:
|
|
WARN_ON(!osds_valid(up) || !osds_valid(acting));
|
|
}
|
|
|
|
/*
|
|
* Return acting primary for given PG, or -1 if none.
|
|
*/
|
|
int ceph_pg_to_acting_primary(struct ceph_osdmap *osdmap,
|
|
const struct ceph_pg *raw_pgid)
|
|
{
|
|
struct ceph_osds up, acting;
|
|
|
|
ceph_pg_to_up_acting_osds(osdmap, raw_pgid, &up, &acting);
|
|
return acting.primary;
|
|
}
|
|
EXPORT_SYMBOL(ceph_pg_to_acting_primary);
|