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libceph: resend on PG splits if OSD has RESEND_ON_SPLIT

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Note that ceph_osd_request_target fields are updated regardless of
RESEND_ON_SPLIT.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Ilya Dryomov 2017-06-15 16:30:54 +02:00
parent 84ed45df46
commit 7de030d6b1
3 changed files with 19 additions and 11 deletions
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2
include/linux/ceph/osdmap.h
View File

@ -249,6 +249,8 @@ static inline void ceph_osds_init(struct ceph_osds *set)
void ceph_osds_copy(struct ceph_osds *dest, const struct ceph_osds *src);
bool ceph_pg_is_split(const struct ceph_pg *pgid, u32 old_pg_num,
u32 new_pg_num);
bool ceph_is_new_interval(const struct ceph_osds *old_acting,
const struct ceph_osds *new_acting,
const struct ceph_osds *old_up,

21
net/ceph/osd_client.c
View File

@ -1319,6 +1319,7 @@ enum calc_target_result {
static enum calc_target_result calc_target(struct ceph_osd_client *osdc,
struct ceph_osd_request_target *t,
struct ceph_connection *con,
bool any_change)
{
struct ceph_pg_pool_info *pi;
@ -1327,6 +1328,7 @@ static enum calc_target_result calc_target(struct ceph_osd_client *osdc,
bool force_resend = false;
bool unpaused = false;
bool legacy_change;
bool split = false;
bool need_check_tiering = false;
bool sort_bitwise = ceph_osdmap_flag(osdc, CEPH_OSDMAP_SORTBITWISE);
enum calc_target_result ct_res;
@ -1398,8 +1400,10 @@ static enum calc_target_result calc_target(struct ceph_osd_client *osdc,
}
legacy_change = ceph_pg_compare(&t->pgid, &pgid) ||
ceph_osds_changed(&t->acting, &acting, any_change);
if (t->pg_num)
split = ceph_pg_is_split(&last_pgid, t->pg_num, pi->pg_num);
if (legacy_change || force_resend) {
if (legacy_change || force_resend || split) {
t->pgid = pgid; /* struct */
ceph_pg_to_primary_shard(osdc->osdmap, &pgid, &t->spgid);
ceph_osds_copy(&t->acting, &acting);
@ -1413,7 +1417,9 @@ static enum calc_target_result calc_target(struct ceph_osd_client *osdc,
t->osd = acting.primary;
}
if (unpaused || legacy_change || force_resend)
if (unpaused || legacy_change || force_resend ||
(split && con && CEPH_HAVE_FEATURE(con->peer_features,
RESEND_ON_SPLIT)))
ct_res = CALC_TARGET_NEED_RESEND;
else
ct_res = CALC_TARGET_NO_ACTION;
@ -1765,7 +1771,7 @@ static void __submit_request(struct ceph_osd_request *req, bool wrlocked)
dout("%s req %p wrlocked %d\n", __func__, req, wrlocked);
again:
ct_res = calc_target(osdc, &req->r_t, false);
ct_res = calc_target(osdc, &req->r_t, NULL, false);
if (ct_res == CALC_TARGET_POOL_DNE && !wrlocked)
goto promote;
@ -2561,7 +2567,7 @@ static void linger_submit(struct ceph_osd_linger_request *lreq)
struct ceph_osd_client *osdc = lreq->osdc;
struct ceph_osd *osd;
calc_target(osdc, &lreq->t, false);
calc_target(osdc, &lreq->t, NULL, false);
osd = lookup_create_osd(osdc, lreq->t.osd, true);
link_linger(osd, lreq);
@ -3179,7 +3185,7 @@ recalc_linger_target(struct ceph_osd_linger_request *lreq)
struct ceph_osd_client *osdc = lreq->osdc;
enum calc_target_result ct_res;
ct_res = calc_target(osdc, &lreq->t, true);
ct_res = calc_target(osdc, &lreq->t, NULL, true);
if (ct_res == CALC_TARGET_NEED_RESEND) {
struct ceph_osd *osd;
@ -3250,7 +3256,8 @@ static void scan_requests(struct ceph_osd *osd,
n = rb_next(n); /* unlink_request(), check_pool_dne() */
dout("%s req %p tid %llu\n", __func__, req, req->r_tid);
ct_res = calc_target(osdc, &req->r_t, false);
ct_res = calc_target(osdc, &req->r_t, &req->r_osd->o_con,
false);
switch (ct_res) {
case CALC_TARGET_NO_ACTION:
force_resend_writes = cleared_full ||
@ -3359,7 +3366,7 @@ static void kick_requests(struct ceph_osd_client *osdc,
erase_request(need_resend, req); /* before link_request() */
WARN_ON(req->r_osd);
calc_target(osdc, &req->r_t, false);
calc_target(osdc, &req->r_t, NULL, false);
osd = lookup_create_osd(osdc, req->r_t.osd, true);
link_request(osd, req);
if (!req->r_linger) {

7
net/ceph/osdmap.c
View File

@ -1753,9 +1753,8 @@ void ceph_osds_copy(struct ceph_osds *dest, const struct ceph_osds *src)
dest->primary = src->primary;
}
static bool is_split(const struct ceph_pg *pgid,
u32 old_pg_num,
u32 new_pg_num)
bool ceph_pg_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;
@ -1800,7 +1799,7 @@ bool ceph_is_new_interval(const struct ceph_osds *old_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) ||
ceph_pg_is_split(pgid, old_pg_num, new_pg_num) ||
old_sort_bitwise != new_sort_bitwise;
}