cluster/afr: Set AFR UP message as soon as quorum is obtained.

Summary:
AFR currently waits for all children to respond before sending an UP
message. This means that one dead host cal cause us to wait a TCP
timeout (2 mins!) before declaring the volume up.

Now we send an UP as soon as quorum is obtained.

This is a port of D4701919 to 3.8.

Reviewed By: sshreyas

Change-Id: I642d4eb7dc7e0b289e89b7a16abf99a3f98aa8b3
Reviewed-on: https://review.gluster.org/18231
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Shreyas Siravara <sshreyas@fb.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>

1 files changed, 62 insertions, 0 deletions

diff --git a/tests/basic/afr-early-up.t b/tests/basic/afr-early-up.t
new file mode 100644
index 00000000000..703855f4fac
--- /dev/null
+++ b/tests/basic/afr-early-up.t
@@ -0,0 +1,62 @@
+#!/bin/bash
+
+. $(dirname $0)/../include.rc
+. $(dirname $0)/../volume.rc
+. $(dirname $0)/../dht.rc
+
+function mount_gluster ()
+{
+  local host=$1
+  local volume=$2
+  local mount=$3
+  local timeout=$4
+
+  if ! glusterfs -s $host --volfile-id $volume $mount; then
+    echo "N"
+    return
+  fi
+
+  if ! timeout -s 9 $timeout stat $mount; then
+    echo "N"
+    return
+  fi
+
+  echo "Y"
+}
+
+cleanup;
+
+TEST glusterd
+TEST pidof glusterd
+TEST $CLI volume info;
+
+TEST $CLI volume create $V0 replica 3  $H0:$B0/${V0}{1,2,3};
+
+EXPECT "$V0" volinfo_field $V0 'Volume Name';
+EXPECT 'Created' volinfo_field $V0 'Status';
+EXPECT '3' brick_count $V0
+
+TEST $CLI volume start $V0;
+EXPECT 'Started' volinfo_field $V0 'Status';
+
+BRICKPORT=$(pgrep -fl glusterfsd | head -n1 | sed 's/^.*listen-port=//')
+
+TEST $CLI volume set $V0 cluster.quorum-type auto
+EXPECT auto volume_option $V0 cluster.quorum-type
+
+# Use iptables to block access to one of the brick ports.
+BRICKPORT=$(pgrep -fla glusterfsd | head -n1 | sed 's/^.*listen-port=//')
+iptables -A INPUT -p tcp --dport $BRICKPORT -j DROP
+ip6tables -A INPUT -p tcp --dport $BRICKPORT -j DROP
+
+# Should still be able to mount within 10 seconds even though brick is
+# unreachable.
+EXPECT "Y" mount_gluster $H0 $V0 $M0 10
+
+# Mount should be writable (we should have quorum)
+TEST dd if=/dev/zero of=$M0/test.out bs=128K count=1 conv=fsync
+
+iptables -D INPUT -p tcp --dport $BRICKPORT -j DROP
+ip6tables -D INPUT -p tcp --dport $BRICKPORT -j DROP
+
+cleanup;