From b262938bcaaca8521051c19ae2290a825e8f6bd8 Mon Sep 17 00:00:00 2001
From: Vitaliy Filippov <vitalif@yourcmc.ru>
Date: Wed, 8 Dec 2021 02:02:30 +0300
Subject: [PATCH] Fix naggy "Failed to get RDMA device list: Unknown error -38"

---
 src/msgr_rdma.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/msgr_rdma.cpp b/src/msgr_rdma.cpp
index f5e5c1176..452e3bc79 100644
--- a/src/msgr_rdma.cpp
+++ b/src/msgr_rdma.cpp
@@ -62,7 +62,13 @@ msgr_rdma_context_t *msgr_rdma_context_t::create(const char *ib_devname, uint8_t
     dev_list = ibv_get_device_list(NULL);
     if (!dev_list)
     {
-        fprintf(stderr, "Failed to get RDMA device list: %s\n", strerror(errno));
+        if (errno == -ENOSYS || errno == ENOSYS)
+        {
+            if (log_level > 0)
+                fprintf(stderr, "No RDMA devices found (RDMA device list returned ENOSYS)\n");
+        }
+        else
+            fprintf(stderr, "Failed to get RDMA device list: %s\n", strerror(errno));
         goto cleanup;
     }
     if (!ib_devname)