Set format options when prepairing filesystems

Various options are available when formatting the different file systems
we support. This change implements a hash to capture many of the
different options we use throughout a test deployment.

* BTRFS: set metadata for test volumes to single.

  the metadata on our loopback devices was defaulting the the file-system
  default of DUP (duplicate) which is reasonable on a production
  deployment however on a loopback device it makes more sense to set the
  data and metadata options to "single". This will help eliminate the
  issues were seeing with intermittently full file-systems.

* XFS: set block sizes, placement groups, and do not issue discards at
       create.

  This will speed up the time it takes to format an XFS partition as
  well as ensure things remain speedy under load.

* EXT4: speed up directory lookups

  Use hashed b-trees to speed up name lookups in large directories.

Change-Id: I004768d98da194cc90b36cdf72dbf75b24a661a2
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>

tests/roles/bootstrap-host/defaults/main.yml

@@ -239,6 +239,13 @@ bootstrap_host_data_disk2_formats:
   xfs: xfs
   dir: ext4
   lvm: ext2
+
+bootstrap_host_format_options:
+  machinectl: '--metadata single --data single'
+  btrfs: '--metadata single --data single'
+  xfs: '-K -d agcount=64 -l size=128m'
+  ext4: '-O dir_index'
+
 #
 # Set the data disk mount options.
 bootstrap_host_data_mount_options:

tests/roles/bootstrap-host/tasks/prepare_data_disk.yml

@@ -61,6 +61,7 @@
   filesystem:
     fstype: ext4
     dev: "/dev/{{ _bootstrap_host_data_disk_device }}1"
+    opts: "{{ bootstrap_host_format_options['ext4'] | default(omit) }}"
   when:
     - bootstrap_host_data_disk_device_force | bool
   tags:
@@ -70,6 +71,7 @@
   filesystem:
     fstype: "{{ bootstrap_host_data_disk2_fs }}"
     dev: "/dev/{{ _bootstrap_host_data_disk_device }}2"
+    opts: "{{ bootstrap_host_format_options[bootstrap_host_data_disk2_fs] | default(omit) }}"
   when:
     - bootstrap_host_data_disk_device_force | bool
     - lxc_container_backing_store != 'lvm'

tests/roles/bootstrap-host/tasks/prepare_loopback_btrfs.yml

@@ -21,6 +21,7 @@
 - name: Format the lxc-btrfs file
   filesystem:
     fstype: btrfs
+    opts: "{{ bootstrap_host_format_options['btrfs'] | default(omit) }}"
     dev: /openstack/lxc-btrfs.img
 
 - name: Run the systemd mount role

tests/roles/bootstrap-host/tasks/prepare_loopback_machines.yml

@@ -23,6 +23,7 @@
 - name: Format the machines file
   filesystem:
     fstype: btrfs
+    opts: "{{ bootstrap_host_format_options['btrfs'] | default(omit) }}"
     dev: /openstack/machines.img
   tags:
     - machines-format-file

tests/roles/bootstrap-host/tasks/prepare_loopback_nova.yml

@@ -24,6 +24,7 @@
   filesystem:
     fstype: xfs
     dev: /openstack/nova.img
+    opts: "{{ bootstrap_host_format_options['xfs'] | default(omit) }}"
   tags:
     - nova-format-file
 

tests/roles/bootstrap-host/tasks/prepare_loopback_swift.yml

@@ -27,7 +27,7 @@
 - name: Format the Swift files
   filesystem:
     fstype: xfs
-    opts: '-K'
+    opts: "{{ bootstrap_host_format_options['xfs'] | default(omit) }}"
     dev: "/openstack/{{ item }}.img"
   with_items:
     - 'swift1'