move chroot and pbuilder builds to tmpfs

For this change update_jdn.sh will only work well, if jenkins is not
running. It avoids breaking running builds at the cost of potentially
not applying configuration. The changes are:

 * /srv/workspace becomes a tmpfs mounted location
 * /etc/init.d/jenkins-workspace creates subdirectories on that tmpfs
 * Old locations for chroots and pbuilder are moved using symlinks.

1 files changed, 22 insertions, 0 deletions

diff --git a/etc/init.d/jenkins-workspace b/etc/init.d/jenkins-workspace
new file mode 100755
index 00000000..128d828c
--- /dev/null
+++ b/etc/init.d/jenkins-workspace
@@ -0,0 +1,22 @@
+#!/bin/sh
+### BEGIN INIT INFO
+# Provides:		jenkins-workspace
+# Required-Start:	$remote_fs
+# Required-Stop:	$remote_fs
+# Default-Start:	2 3 4 5
+# Default-Stop:
+# X-Start-Before:	jenkins
+# Short-Description:	Create jenkins workspace directory structure
+### END INIT INFO
+
+WORKSPACE=/srv/workspace
+
+case "$1" in
+	start)
+		echo "Creating jenkins workspace"
+		mkdir "$WORKSPACE/chroots"
+		chown jenkins:jenkins "$WORKSPACE/chroots"
+		mkdir "$WORKSPACE/pbuilder"
+		echo done
+	;;
+esac