From 47f32bc998101f27bcfd31094a63dd00d9334952 Mon Sep 17 00:00:00 2001
From: Binbin <binloveplay1314@qq.com>
Date: Wed, 21 Jun 2023 22:57:11 +0800
Subject: [PATCH] Print strerror when bio initialization fails (#12333)

Now we can see something like this:
```
Fatal: Can't initialize Background Jobs. Error message: Cannot allocate memory
```
---
 src/bio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/bio.c b/src/bio.c
index 640fbb024..10ecf8db2 100644
--- a/src/bio.c
+++ b/src/bio.c
@@ -142,7 +142,7 @@ void bioInit(void) {
     for (j = 0; j < BIO_WORKER_NUM; j++) {
         void *arg = (void*)(unsigned long) j;
         if (pthread_create(&thread,&attr,bioProcessBackgroundJobs,arg) != 0) {
-            serverLog(LL_WARNING,"Fatal: Can't initialize Background Jobs.");
+            serverLog(LL_WARNING, "Fatal: Can't initialize Background Jobs. Error message: %s", strerror(errno));
             exit(1);
         }
         bio_threads[j] = thread;