osd/PG: print debug if we fail to decode snapbl

Signed-off-by: Sage Weil <sage@redhat.com>
(cherry picked from commit 2f5a24d8f8fe7dd69dbbe3b3883d24d7ea0fdd41)

diff --git a/src/osd/PG.cc b/src/osd/PG.cc
index 7e309249eef6f074dce5b1be4e95af9b14e7d22b..028e3f5559bb2a5f7422e497558627594b877c78 100644 (file)
--- a/src/osd/PG.cc
+++ b/src/osd/PG.cc
@@ -3470,6 +3470,7 @@ void PG::update_snap_map(
        try {
          ::decode(snaps, p);
        } catch (...) {
+         derr << __func__ << " decode snaps failure on " << *i << dendl;
          snaps.clear();
        }
        set<snapid_t> _snaps(snaps.begin(), snaps.end());