common: add query_str when res_search() failed

I don't know the abort information about DNS Resolver,
if not add "query_str".

Signed-off-by: huanwen ren <ren.huanwen@zte.com.cn>

diff --git a/src/common/dns_resolve.cc b/src/common/dns_resolve.cc
index 3b984a61c82cd5428cd28d939da487298a2e1648..13f06548e84d040a9ab17da1beb06dfb24430d6d 100644 (file)
--- a/src/common/dns_resolve.cc
+++ b/src/common/dns_resolve.cc
@@ -299,7 +299,7 @@ int DNSResolver::resolve_srv_hosts(CephContext *cct, const string& service_name,
   }
 #endif
   if (len < 0) {
-    lderr(cct) << "res_search() failed" << dendl;
+    lderr(cct) << "failed for service " << query_str << dendl;
     return len;
   }
   else if (len == 0) {