glusterfs/SOURCES/0532-glusterd-fix-for-starting-brick-on-new-port.patch

From 2dad17fdbaab2ab2cda6a05dec9dcd2d37ea32ff Mon Sep 17 00:00:00 2001
From: Nikhil Ladha <nladha@redhat.com>
Date: Wed, 10 Feb 2021 15:07:32 +0530
Subject: [PATCH 532/532] glusterd: fix for starting brick on new port

The Errno set by the runner code was not correct when the bind() fails
to assign an already occupied port in the __socket_server_bind().

Fix:
Updated the code to return the correct errno from the
__socket_server_bind() if the bind() fails due to EADDRINUSE error. And,
use the returned errno from runner_run() to retry allocating a new port
to the brick process.

>Fixes: #1101

>Change-Id: If124337f41344a04f050754e402490529ef4ecdc
>Signed-off-by: nik-redhat nladha@redhat.com

Upstream patch: https://github.com/gluster/glusterfs/pull/2090

BUG: 1865796

Change-Id: If124337f41344a04f050754e402490529ef4ecdc
Signed-off-by: nik-redhat <nladha@redhat.com>
Reviewed-on: https://code.engineering.redhat.com/gerrit/227261
Tested-by: RHGS Build Bot <nigelb@redhat.com>
Reviewed-by: Xavi Hernandez Juan <xhernandez@redhat.com>
---
 rpc/rpc-transport/socket/src/socket.c      | 3 +++
 xlators/mgmt/glusterd/src/glusterd-utils.c | 6 ++----
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/rpc/rpc-transport/socket/src/socket.c b/rpc/rpc-transport/socket/src/socket.c
index 1ee7320..96ed9f1 100644
--- a/rpc/rpc-transport/socket/src/socket.c
+++ b/rpc/rpc-transport/socket/src/socket.c
@@ -973,8 +973,11 @@ __socket_server_bind(rpc_transport_t *this)
                this->myinfo.identifier, strerror(errno));
         if (errno == EADDRINUSE) {
             gf_log(this->name, GF_LOG_ERROR, "Port is already in use");
+            ret = -EADDRINUSE;
+            goto out;
         }
     }
+
     if (AF_UNIX != SA(&this->myinfo.sockaddr)->sa_family) {
         if (getsockname(priv->sock, SA(&this->myinfo.sockaddr),
                         &this->myinfo.sockaddr_len) != 0) {
diff --git a/xlators/mgmt/glusterd/src/glusterd-utils.c b/xlators/mgmt/glusterd/src/glusterd-utils.c
index cf32bd9..bc188a2 100644
--- a/xlators/mgmt/glusterd/src/glusterd-utils.c
+++ b/xlators/mgmt/glusterd/src/glusterd-utils.c
@@ -2151,6 +2151,7 @@ glusterd_volume_start_glusterfs(glusterd_volinfo_t *volinfo,
         ret = -1;
         goto out;
     }
+
     /* Build the exp_path, before starting the glusterfsd even in
        valgrind mode. Otherwise all the glusterfsd processes start
        writing the valgrind log to the same file.
@@ -2289,13 +2290,10 @@ retry:
 
     if (wait) {
         synclock_unlock(&priv->big_lock);
-        errno = 0;
         ret = runner_run(&runner);
-        if (errno != 0)
-            ret = errno;
         synclock_lock(&priv->big_lock);
 
-        if (ret == EADDRINUSE) {
+        if (ret == -EADDRINUSE) {
             /* retry after getting a new port */
             gf_msg(this->name, GF_LOG_WARNING, -ret,
                    GD_MSG_SRC_BRICK_PORT_UNAVAIL,
-- 
1.8.3.1