exts: Add openstack configure/write exts

openstackssh.write: Write extension which deploy a raw image of baserock
directly to an OpenStack machine using python-glanceclient. The raw image
deployed has modified its bootloader to use virtio disks.

vdaboot.configure: Configuration extension to change the mount point of
"/" to use virtio disks (/dev/vda).

1 files changed, 34 insertions, 0 deletions

diff --git a/morphlib/exts/vdaboot.configure b/morphlib/exts/vdaboot.configure
new file mode 100755
index 00000000..cb54bf0d
--- /dev/null
+++ b/morphlib/exts/vdaboot.configure
@@ -0,0 +1,34 @@
+#!/bin/sh
+# Copyright (C) 2013  Codethink Limited
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+
+# Change the "/" mount point to /dev/vda to use virtio disks.
+
+set -e
+
+if [ "$OPENSTACK_USER" ]
+then	
+    # Modifying fstab 
+    if [ -f "$1/etc/fstab" ]
+    then
+        mv "$1/etc/fstab" "$1/etc/fstab.old"
+        awk 'BEGIN {print "/dev/vda / btrfs defaults,rw,noatime 0 1"};
+             $2 != "/" {print $0 };' "$1/etc/fstab.old" > "$1/etc/fstab"
+        rm "$1/etc/fstab.old"
+    else
+        echo "/dev/vda / btrfs defaults,rw,noatime 0 1"> "$1/etc/fstab"
+    fi
+fi