rados: print error message on exit

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

diff --git a/src/rados.cc b/src/rados.cc
index bf4a1e25ac7339255b7148dd6d140885f14bf280..c6b6018453ea4fb60e2dace980eb2d3f1c384abe 100644 (file)
--- a/src/rados.cc
+++ b/src/rados.cc
@@ -766,6 +766,8 @@ int main(int argc, const char **argv)
     usage();
   }
 
+  if (ret)
+    cerr << "error " << (-ret) << ": " << strerror_r(-ret, buf, sizeof(buf)) << std::endl;
   return (ret < 0) ? 1 : 0;
 }