osd: log backfill restart

This is interesting, particularly in determining when a peer that was
partially backfilled needs to be restarted.

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

diff --git a/src/osd/PG.cc b/src/osd/PG.cc
index a33484392a33cb6bc0a1742d998d12e8eed7f470..5892b9511290721c0b4754a9181bbfed9429bb66 100644 (file)
--- a/src/osd/PG.cc
+++ b/src/osd/PG.cc
@@ -1237,6 +1237,10 @@ void PG::activate(ObjectStore::Transaction& t, list<Context*>& tfin,
       dout(10) << "activate peer osd." << peer << " " << pi << dendl;
 
       if (log.tail > pi.last_update || pi.last_backfill == hobject_t()) {
+       osd->clog.info() << info.pgid << " restarting backfill on osd." << peer
+                        << " from (" << pi.log_tail << "," << pi.last_update << "] " << pi.last_backfill
+                        << " to " << info.last_update;
+
        // reset, backfill
        // we need to do this even when last_backfill == hobject_t() to ensure that
        // stats get zeroed out properly, etc.
@@ -1251,6 +1255,7 @@ void PG::activate(ObjectStore::Transaction& t, list<Context*>& tfin,
        peer_missing[peer].clear();
 
        dout(10) << "activate peer osd." << peer << " must (re)start backfill, sending info " << pi << dendl;
+
        if (activator_map) {
          if (activator_map->count(peer) == 0)
            (*activator_map)[peer] = new MOSDPGInfo(get_osdmap()->get_epoch());