Disable fallocate for Gluster volumes

The overridden configuration files of gluster now disable the usage of
fallocate. Also modified the functional test configuration files
accordingly.

BUG: 951661
Change-Id: I3c7d518e0415b7eea5b31c88dd647069f9d730ac
Signed-off-by: Chetan Risbud <crisbud@redhat.com>
Signed-off-by: Luis Pabon <lpabon@redhat.com>
Reviewed-on: http://review.gluster.org/5303

etc/account-server.conf-gluster

@@ -4,6 +4,8 @@ mount_check = true
 bind_port = 6012
 user = root
 log_facility = LOG_LOCAL2
+# Override swift's default behaviour for fallocate.
+disable_fallocate = true
 
 [pipeline:main]
 pipeline = account-server

etc/container-server.conf-gluster

@@ -4,6 +4,8 @@ mount_check = true
 bind_port = 6011
 user = root
 log_facility = LOG_LOCAL2
+# Override swift's default behaviour for fallocate.
+disable_fallocate = true
 
 [pipeline:main]
 pipeline = container-server

etc/object-server.conf-gluster

@@ -5,6 +5,8 @@ bind_port = 6010
 # If not doing the above, setting this value initially to match the number of
 # CPUs is a good starting point for determining the right value.
 workers = 1
+# Override swift's default behaviour for fallocate.
+disable_fallocate = true
 
 [pipeline:main]
 pipeline = object-server

test/functional/conf/account-server.conf

@@ -4,6 +4,8 @@ mount_check = false
 bind_port = 6012
 user = root
 log_facility = LOG_LOCAL2
+# Override swift's default behaviour for fallocate.
+disable_fallocate = true
 
 [pipeline:main]
 pipeline = account-server

test/functional/conf/container-server.conf

@@ -4,6 +4,8 @@ mount_check = false
 bind_port = 6011
 user = root
 log_facility = LOG_LOCAL2
+# Override swift's default behaviour for fallocate.
+disable_fallocate = true
 
 [pipeline:main]
 pipeline = container-server

test/functional/conf/object-server.conf

@@ -5,6 +5,8 @@ bind_port = 6010
 # If not doing the above, setting this value initially to match the number of
 # CPUs is a good starting point for determining the right value.
 workers = 1
+# Override swift's default behaviour for fallocate.
+disable_fallocate = true
 
 [pipeline:main]
 pipeline = object-server