Move generation of baremetal VM names to lib/ironic

The create-nodes script currently receives a total # of VMs to create
and creates them all, generating their names on the fly.  This moves
that name generation to lib/ironic and makes the script create only
single VMs as directed.  This centralizes the naming of things to
lib/ironic and will make it easier to reference these things elsewhere.

Change-Id: I98e61f7188e027e690303e32aff7cd2347f6d2c2
diff --git a/tools/ironic/scripts/create-node b/tools/ironic/scripts/create-node
new file mode 100755
index 0000000..25b53d4
--- /dev/null
+++ b/tools/ironic/scripts/create-node
@@ -0,0 +1,79 @@
+#!/usr/bin/env bash
+
+# **create-nodes**
+
+# Creates baremetal poseur nodes for ironic testing purposes
+
+set -ex
+
+# Keep track of the devstack directory
+TOP_DIR=$(cd $(dirname "$0")/.. && pwd)
+
+NAME=$1
+CPU=$2
+MEM=$(( 1024 * $3 ))
+# extra G to allow fuzz for partition table : flavor size and registered size
+# need to be different to actual size.
+DISK=$(( $4 + 1))
+
+case $5 in
+    i386) ARCH='i686' ;;
+    amd64) ARCH='x86_64' ;;
+    *) echo "Unsupported arch $4!" ; exit 1 ;;
+esac
+
+BRIDGE=$6
+EMULATOR=$7
+LOGDIR=$8
+
+LIBVIRT_NIC_DRIVER=${LIBVIRT_NIC_DRIVER:-"e1000"}
+LIBVIRT_STORAGE_POOL=${LIBVIRT_STORAGE_POOL:-"default"}
+LIBVIRT_CONNECT_URI=${LIBVIRT_CONNECT_URI:-"qemu:///system"}
+
+export VIRSH_DEFAULT_CONNECT_URI=$LIBVIRT_CONNECT_URI
+
+if ! virsh pool-list --all | grep -q $LIBVIRT_STORAGE_POOL; then
+    virsh pool-define-as --name $LIBVIRT_STORAGE_POOL dir --target /var/lib/libvirt/images >&2
+    virsh pool-autostart $LIBVIRT_STORAGE_POOL >&2
+    virsh pool-start $LIBVIRT_STORAGE_POOL >&2
+fi
+
+pool_state=$(virsh pool-info $LIBVIRT_STORAGE_POOL | grep State | awk '{ print $2 }')
+if [ "$pool_state" != "running" ] ; then
+  [ ! -d /var/lib/libvirt/images ] && sudo mkdir /var/lib/libvirt/images
+  virsh pool-start $LIBVIRT_STORAGE_POOL >&2
+fi
+
+if [ -n "$LOGDIR" ] ; then
+  mkdir -p "$LOGDIR"
+fi
+
+PREALLOC=
+if [ -f /etc/debian_version ]; then
+    PREALLOC="--prealloc-metadata"
+fi
+
+if [ -n "$LOGDIR" ] ; then
+  VM_LOGGING="--console-log $LOGDIR/${NAME}_console.log"
+else
+  VM_LOGGING=""
+fi
+VOL_NAME="${NAME}.qcow2"
+
+if ! virsh list --all | grep -q $NAME; then
+  virsh vol-list --pool $LIBVIRT_STORAGE_POOL | grep -q $VOL_NAME &&
+      virsh vol-delete $VOL_NAME --pool $LIBVIRT_STORAGE_POOL >&2
+  virsh vol-create-as $LIBVIRT_STORAGE_POOL ${VOL_NAME} ${DISK}G --format qcow2 $PREALLOC >&2
+  volume_path=$(virsh vol-path --pool $LIBVIRT_STORAGE_POOL $VOL_NAME)
+  # Pre-touch the VM to set +C, as it can only be set on empty files.
+  sudo touch "$volume_path"
+  sudo chattr +C "$volume_path" || true
+  $TOP_DIR/scripts/configure-vm \
+    --bootdev network --name $NAME --image "$volume_path" \
+    --arch $ARCH --cpus $CPU --memory $MEM --libvirt-nic-driver $LIBVIRT_NIC_DRIVER \
+    --emulator $EMULATOR --network $BRIDGE $VM_LOGGING >&2
+
+fi
+
+# echo mac
+virsh dumpxml $NAME | grep "mac address" | head -1 | cut -d\' -f2