File glusterfs-3.4.1.add.base-port.config.option.patch of Package glusterfs

From http://review.gluster.org/6147
From b1d288f6d24a3fe439730c2f4e28bcc7a9ae7ecd Mon Sep 17 00:00:00 2001
From: Kaleb S. KEITHLEY <kkeithle@redhat.com>
Date: Fri, 25 Oct 2013 09:05:18 -0400
Subject: [PATCH] mgmt/glusterd: add option to specify a different base-port

This is (arguably) a hack to work around a bug in libvirt which is not
well behaved wrt to using TCP ports in the unreserved space between
49152-65535. (See RFC 6335)

Normally glusterd starts and binds to the first available port in range,
usually 49152. libvirt's live migration also tries to use ports in this
range, but has no fallback to use (an)other port(s) when the one it wants
is already in use.

libvirt cannot fix this in time for their impending release. This is
submitted to gerrit to provide some minimal visibility upstream to justify
hacking this change (as a temporary patch) into the glusterfs-3.4.1 RPMs
for Fedora 18-21 until libvirt can fix their implementation.

Change-Id: Ie77b00ac60730d1e48907dd0b38ddae92f3ac345
Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com>
---
 doc/glusterd.vol                           |    1 +
 xlators/mgmt/glusterd/src/glusterd-pmap.c  |   10 +++++-----
 xlators/mgmt/glusterd/src/glusterd-store.c |    5 ++---
 xlators/mgmt/glusterd/src/glusterd.c       |   12 ++++++++++--
 xlators/mgmt/glusterd/src/glusterd.h       |    1 +
 5 files changed, 19 insertions(+), 10 deletions(-)

diff --git a/doc/glusterd.vol b/doc/glusterd.vol
index de17d8f..9bac52a 100644
--- a/doc/glusterd.vol
+++ b/doc/glusterd.vol
@@ -5,4 +5,5 @@ volume management
     option transport.socket.keepalive-time 10
     option transport.socket.keepalive-interval 2
     option transport.socket.read-fail-log off
+#   option base-port 49152
 end-volume
diff --git a/xlators/mgmt/glusterd/src/glusterd-pmap.c b/xlators/mgmt/glusterd/src/glusterd-pmap.c
index aab6744..7dec27c 100644
--- a/xlators/mgmt/glusterd/src/glusterd-pmap.c
+++ b/xlators/mgmt/glusterd/src/glusterd-pmap.c
@@ -52,8 +52,8 @@ pmap_port_isfree (int port)
 }
 
 
-struct pmap_registry *
-pmap_registry_new (void)
+static struct pmap_registry *
+pmap_registry_new (xlator_t *this)
 {
         struct pmap_registry *pmap = NULL;
         int                   i = 0;
@@ -69,8 +69,8 @@ pmap_registry_new (void)
                         pmap->ports[i].type = GF_PMAP_PORT_FOREIGN;
         }
 
-        pmap->base_port = GF_IANA_PRIV_PORTS_START;
-        pmap->last_alloc = GF_IANA_PRIV_PORTS_START;
+        pmap->base_port = ((glusterd_conf_t *)(this->private))->base_port;
+        pmap->last_alloc = ((glusterd_conf_t *)(this->private))->base_port;
 
         return pmap;
 }
@@ -86,7 +86,7 @@ pmap_registry_get (xlator_t *this)
 
         pmap = priv->pmap;
         if (!pmap) {
-                pmap = pmap_registry_new ();
+                pmap = pmap_registry_new (this);
                 if (!pmap)
                         return NULL;
                 priv->pmap = pmap;
diff --git a/xlators/mgmt/glusterd/src/glusterd-store.c b/xlators/mgmt/glusterd/src/glusterd-store.c
index ae0c4e8..1790c5a 100644
--- a/xlators/mgmt/glusterd/src/glusterd-store.c
+++ b/xlators/mgmt/glusterd/src/glusterd-store.c
@@ -1484,7 +1484,7 @@ glusterd_store_retrieve_bricks (glusterd_volinfo_t *volinfo)
                                     strlen (GLUSTERD_STORE_KEY_BRICK_PORT))) {
                                 gf_string2int (value, &brickinfo->port);
 
-                                if (brickinfo->port < GF_IANA_PRIV_PORTS_START){
+                                if (brickinfo->port < priv->base_port){
                                         /* This is required to adhere to the
                                            IANA standards */
                                         brickinfo->port = 0;
@@ -1500,8 +1500,7 @@ glusterd_store_retrieve_bricks (glusterd_volinfo_t *volinfo)
                                     strlen (GLUSTERD_STORE_KEY_BRICK_RDMA_PORT))) {
                                 gf_string2int (value, &brickinfo->rdma_port);
 
-                                if (brickinfo->rdma_port <
-                                    GF_IANA_PRIV_PORTS_START){
+                                if (brickinfo->rdma_port < priv->base_port) {
                                         /* This is required to adhere to the
                                            IANA standards */
                                         brickinfo->rdma_port = 0;
diff --git a/xlators/mgmt/glusterd/src/glusterd.c b/xlators/mgmt/glusterd/src/glusterd.c
index 785e67a..62c4a57 100644
--- a/xlators/mgmt/glusterd/src/glusterd.c
+++ b/xlators/mgmt/glusterd/src/glusterd.c
@@ -916,7 +916,6 @@ init (xlator_t *this)
         int                first_time        = 0;
         char              *mountbroker_root  = NULL;
         int                i                 = 0;
-
 #ifdef DEBUG
         char              *valgrind_str      = NULL;
 #endif
@@ -1101,6 +1100,12 @@ init (xlator_t *this)
         if (ret)
                 goto out;
 
+        conf->base_port = GF_IANA_PRIV_PORTS_START;
+        if (dict_get_uint32(this->options, "base-port", &conf->base_port) == 0) {
+                gf_log (this->name, GF_LOG_INFO,
+                        "base-port override: %d", conf->base_port);
+        }
+
         /* Set option to run bricks on valgrind if enabled in glusterd.vol */
 #ifdef DEBUG
         conf->valgrind = _gf_false;
@@ -1116,7 +1121,6 @@ init (xlator_t *this)
                 }
         }
 #endif
-
         this->private = conf;
         (void) glusterd_nodesvc_set_online_status ("glustershd", _gf_false);
 
@@ -1309,5 +1313,9 @@ struct volume_options options[] = {
           .description = "Sets the quorum percentage for the trusted "
           "storage pool."
         },
+        { .key = {"base-port"},
+          .type = GF_OPTION_TYPE_INT,
+          .description = "Sets the base port for portmap query"
+        },
         { .key   = {NULL} },
 };
diff --git a/xlators/mgmt/glusterd/src/glusterd.h b/xlators/mgmt/glusterd/src/glusterd.h
index 0033125..1054574 100644
--- a/xlators/mgmt/glusterd/src/glusterd.h
+++ b/xlators/mgmt/glusterd/src/glusterd.h
@@ -148,6 +148,7 @@ typedef struct {
         dict_t             *opts;
         synclock_t      big_lock;
         gf_boolean_t    restart_done;
+        uint32_t        base_port;
 } glusterd_conf_t;
 
 
-- 
1.7.1