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osd: tiering: proxy reads during promote

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wip 9980. Do proxy read and async promotion for writeback.

Signed-off-by: Zhiqiang Wang <zhiqiang.wang@intel.com>
This commit is contained in:
Zhiqiang Wang 2014-11-18 15:47:32 -08:00 committed by Sage Weil
parent 4dc9990e7e
commit 8e145e08ed
1 changed files with 9 additions and 8 deletions
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17
src/osd/ReplicatedPG.cc
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@ -1797,21 +1797,24 @@ bool ReplicatedPG::maybe_handle_cache(OpRequestRef op,
promote_object(obc, missing_oid, oloc, op);
return true;
}
// Always proxy
do_proxy_read(op);
// Promote too?
switch (pool.info.min_read_recency_for_promote) {
case 0:
promote_object(obc, missing_oid, oloc, op);
promote_object(obc, missing_oid, oloc, OpRequestRef());
break;
case 1:
// Check if in the current hit set
if (in_hit_set) {
promote_object(obc, missing_oid, oloc, op);
} else {
do_cache_redirect(op, obc);
promote_object(obc, missing_oid, oloc, OpRequestRef());
}
break;
default:
if (in_hit_set) {
promote_object(obc, missing_oid, oloc, op);
promote_object(obc, missing_oid, oloc, OpRequestRef());
} else {
// Check if in other hit sets
map<time_t,HitSetRef>::iterator itor;
@ -1823,9 +1826,7 @@ bool ReplicatedPG::maybe_handle_cache(OpRequestRef op,
}
}
if (in_other_hit_sets) {
promote_object(obc, missing_oid, oloc, op);
} else {
do_cache_redirect(op, obc);
promote_object(obc, missing_oid, oloc, OpRequestRef());
}
}
break;