osd: mention invalid snapc in log

Signed-off-by: Sage Weil <sage@newdream.net>

diff --git a/src/osd/ReplicatedPG.cc b/src/osd/ReplicatedPG.cc
index a589d1afcf96893b5b6b84cc53d6812e4511eba6..1c895be5993a7d61385d31120c83e89c530b0b20 100644 (file)
--- a/src/osd/ReplicatedPG.cc
+++ b/src/osd/ReplicatedPG.cc
@@ -2212,8 +2212,10 @@ int ReplicatedPG::prepare_transaction(OpContext *ctx)
   // there was a modification.
 
   // valid snap context?
-  if (!ctx->snapc.is_valid())
+  if (!ctx->snapc.is_valid()) {
+    dout(10) << " invalid snapc " << ctx->snapc << dendl;
     return -EINVAL;
+  }
 
   make_writeable(ctx);