osd: tiering: avoid duplicate promotion on proxy read

Do not promote if it is already undergoing in maybe_handle_cache.

Signed-off-by: Zhiqiang Wang <zhiqiang.wang@intel.com>

diff --git a/src/osd/ReplicatedPG.cc b/src/osd/ReplicatedPG.cc
index bec851d0b8920543711ad9648a5590ff7a5d598f..0a31c770c65b9966893d5abe396be75c4a06cacd 100644 (file)
--- a/src/osd/ReplicatedPG.cc
+++ b/src/osd/ReplicatedPG.cc
@@ -1802,6 +1802,11 @@ bool ReplicatedPG::maybe_handle_cache(OpRequestRef op,
     // Always proxy
     do_proxy_read(op);
 
+    // Avoid duplicate promotion
+    if (obc.get() && obc->is_blocked()) {
+      return true;
+    }
+
     // Promote too?
     switch (pool.info.min_read_recency_for_promote) {
     case 0: