From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sage Weil <sage@newdream.net>
Subject: Re: the messenger to send osd write ack|ondisk
Date: Tue, 6 Sep 2011 21:00:05 -0700 (PDT)
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To: huang jun <hjwsm1989@gmail.com>
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Ah, nice catch.  This fixes it:

diff --git a/src/osd/ReplicatedPG.cc b/src/osd/ReplicatedPG.cc
index 73b42ac..48ee6bb 100644
--- a/src/osd/ReplicatedPG.cc
+++ b/src/osd/ReplicatedPG.cc
@@ -2817,7 +2817,7 @@ void ReplicatedPG::eval_repop(RepGather *repop)
          reply = new MOSDOpReply(op, 0, osd->osdmap->get_epoch(), 0);
        reply->add_flags(CEPH_OSD_FLAG_ACK);
        dout(10) << " sending ack on " << *repop << " " << reply << dendl;
-       osd->cluster_messenger->send_message(reply, op->get_connection());
+       osd->client_messenger->send_message(reply, op->get_connection());
        repop->sent_ack = true;
       }

Pushing to master.

Thanks!
sage