gfproxy: Introduce new server-side daemon called GFProxy

Summmary:
- Adds a new server-side daemon called gfproxyd & a new FUSE client
  called gfproxy-client
- Adds a new translator called AHA (Advanced High-Availability) that
  manages failover between gfproxy servers & FOP replay for failed FOPS.

Signed-off-by: Shreyas Siravara <sshreyas@fb.com>

Change-Id: Iba0bd54e6b4035b8d7914aab64bcac9e93089dd7
Reviewed-on: http://review.gluster.org/16136
Tested-by: Shreyas Siravara <sshreyas@fb.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Kevin Vigor <kvigor@fb.com>

1 files changed, 74 insertions, 0 deletions

diff --git a/tests/basic/gfproxy.t b/tests/basic/gfproxy.t
new file mode 100644
index 00000000000..58794394807
--- /dev/null
+++ b/tests/basic/gfproxy.t
@@ -0,0 +1,74 @@
+#!/bin/bash
+
+. $(dirname $0)/../include.rc
+. $(dirname $0)/../volume.rc
+. $(dirname $0)/../nfs.rc
+
+cleanup;
+
+function start_gfproxyd {
+        glusterfs --volfile-id=gfproxy/${V0} --volfile-server=$H0  -l /var/log/glusterfs/${V0}-gfproxy.log
+}
+
+function restart_gfproxyd {
+        pkill -f gfproxy/${V0}
+        start_gfproxyd
+}
+
+TEST glusterd
+TEST pidof glusterd
+TEST $CLI volume create $V0 replica 3 $H0:$B0/${V0}{0,1,2}
+TEST $CLI volume set $V0 config.gfproxyd-remote-host $H0
+TEST $CLI volume start $V0
+
+sleep 2
+
+REGULAR_CLIENT_VOLFILE="/var/lib/glusterd/vols/${V0}/trusted-${V0}.tcp-fuse.vol"
+GFPROXY_CLIENT_VOLFILE="/var/lib/glusterd/vols/${V0}/trusted-${V0}.tcp-gfproxy-fuse.vol"
+GFPROXYD_VOLFILE="/var/lib/glusterd/vols/${V0}/${V0}.gfproxyd.vol"
+
+# Client volfile must exist
+TEST [ -f $GFPROXY_CLIENT_VOLFILE ]
+
+# AHA & write-behind translators must exist
+TEST grep "cluster/aha"  $GFPROXY_CLIENT_VOLFILE
+TEST grep "performance/write-behind" $GFPROXY_CLIENT_VOLFILE
+
+# Make sure we didn't screw up the existing client
+TEST grep "performance/write-behind" $REGULAR_CLIENT_VOLFILE
+TEST grep "cluster/replicate" $REGULAR_CLIENT_VOLFILE
+TEST grep "cluster/distribute" $REGULAR_CLIENT_VOLFILE
+
+TEST [ -f $GFPROXYD_VOLFILE ]
+
+TEST grep "cluster/replicate" $GFPROXYD_VOLFILE
+TEST grep "cluster/distribute" $GFPROXYD_VOLFILE
+
+# AHA & write-behind must *not* exist
+TEST ! grep "cluster/aha"  $GFPROXYD_VOLFILE
+TEST ! grep "performance/write-behind" $GFPROXYD_VOLFILE
+
+# Test that we can start the server and the client
+TEST start_gfproxyd
+TEST glusterfs --volfile-id=gfproxy-client/${V0} --volfile-server=$H0 -l /var/log/glusterfs/${V0}-gfproxy-client.log $M0
+sleep 2
+TEST grep gfproxy-client/${V0} /proc/mounts
+
+# Write data to the mount and checksum it
+TEST dd if=/dev/urandom bs=1M count=10 of=/tmp/testfile1
+md5=$(md5sum /tmp/testfile1 | awk '{print $1}')
+TEST cp -v /tmp/testfile1 $M0/testfile1
+TEST [ "$(md5sum $M0/testfile1 | awk '{print $1}')" == "$md5" ]
+
+rm /tmp/testfile1
+
+dd if=/dev/zero of=$N0/bigfile bs=1M count=10240 &
+BG_STRESS_PID=$!
+
+sleep 3
+
+restart_gfproxyd
+
+TEST wait $BG_STRESS_PID
+
+cleanup;