Remove naggy RDMA messages when log level is zero

src/messenger.cpp

@@ -17,11 +17,12 @@ void osd_messenger_t::init()
     {
         rdma_context = msgr_rdma_context_t::create(
             rdma_device != "" ? rdma_device.c_str() : NULL,
-            rdma_port_num, rdma_gid_index, rdma_mtu
+            rdma_port_num, rdma_gid_index, rdma_mtu, log_level
         );
         if (!rdma_context)
         {
-            fprintf(stderr, "[OSD %lu] Couldn't initialize RDMA, proceeding with TCP only\n", osd_num);
+            if (log_level > 0)
+                fprintf(stderr, "[OSD %lu] Couldn't initialize RDMA, proceeding with TCP only\n", osd_num);
         }
         else
         {

src/msgr_rdma.cpp

@@ -51,7 +51,7 @@ msgr_rdma_connection_t::~msgr_rdma_connection_t()
             free(b);
 }
 
-msgr_rdma_context_t *msgr_rdma_context_t::create(const char *ib_devname, uint8_t ib_port, uint8_t gid_index, uint32_t mtu)
+msgr_rdma_context_t *msgr_rdma_context_t::create(const char *ib_devname, uint8_t ib_port, uint8_t gid_index, uint32_t mtu, int log_level)
 {
     int res;
     ibv_device **dev_list = NULL;
@@ -70,7 +70,8 @@ msgr_rdma_context_t *msgr_rdma_context_t::create(const char *ib_devname, uint8_t
         ctx->dev = *dev_list;
         if (!ctx->dev)
         {
-            fprintf(stderr, "No RDMA devices found\n");
+            if (log_level > 0)
+                fprintf(stderr, "No RDMA devices found\n");
             goto cleanup;
         }
     }

src/msgr_rdma.h

@@ -35,7 +35,7 @@ struct msgr_rdma_context_t
     int max_cqe = 0;
     int used_max_cqe = 0;
 
-    static msgr_rdma_context_t *create(const char *ib_devname, uint8_t ib_port, uint8_t gid_index, uint32_t mtu);
+    static msgr_rdma_context_t *create(const char *ib_devname, uint8_t ib_port, uint8_t gid_index, uint32_t mtu, int log_level);
     ~msgr_rdma_context_t();
 };