CI: use a custom cirros partition image instead of the default

Cirros partition images are not compatible with local boot since they
don't ship grub (nor a normal root partition). This change adds a script
that builds a partition image with UEFI artifacts present. It still
cannot be booted in legacy mode, but it's a progress.

Set the tempest plugin's partition_netboot option. We need it to inform
the tempest plugin about the ability to do local boot. This option
already exists but is never set.

Also set the new default_boot_option parameter, which will be introduced
and used in Iaba563a2ecbca029889bc6894b2a7f0754d27b88.

Remove netboot from most of the UEFI jobs.

Change-Id: I15189e7f5928126c6b336b1416ce6408a4950062

3 files changed, 122 insertions, 0 deletions

diff --git a/devstack/files/bindep.txt b/devstack/files/bindep.txt
index 8c386349a..820f9b8b0 100644
--- a/devstack/files/bindep.txt
+++ b/devstack/files/bindep.txt
@@ -87,9 +87,13 @@ apparmor [platform:dpkg imagebuild]
 gnupg [imagebuild]
 squashfs-tools [platform:dpkg platform:redhat imagebuild]
 squashfs [platform:suse imagebuild]
+# For custom partition images
+kpartx
 libguestfs0 [platform:dpkg imagebuild]
 libguestfs [platform:rpm imagebuild]
+libguestfs-tools [platform:dpkg]
 python-guestfs [platform:dpkg imagebuild]
+qemu-img [platform:rpm]
 # for TinyIPA build
 wget [imagebuild]
 python-pip [imagebuild]
diff --git a/devstack/lib/ironic b/devstack/lib/ironic
index 228229d2a..fa563ddb5 100644
--- a/devstack/lib/ironic
+++ b/devstack/lib/ironic
@@ -2852,6 +2852,44 @@ function build_ipa_dib_ramdisk {
     rm -rf $tempdir
 }
 
+function upload_image_if_needed {
+    if [[ "$IRONIC_PARTITIONED_IMAGE_NAME" =~ cirros ]] \
+            && [[ "$IRONIC_DEFAULT_BOOT_OPTION" == local ]] \
+            && is_service_enabled glance; then
+        echo Building a Cirros image suitable for local boot
+
+        local dest
+        IRONIC_PARTITIONED_IMAGE_NAME=cirros-${CIRROS_VERSION}-x86_64-partition
+        dest="$IRONIC_DATA_DIR/$IRONIC_PARTITIONED_IMAGE_NAME.img"
+
+        # Export some variables that the script is using.
+        CIRROS_ARCH=$CIRROS_ARCH CIRROS_VERSION=$CIRROS_VERSION \
+            IRONIC_TTY_DEV=$IRONIC_TTY_DEV VERBOSE=$VERBOSE \
+            $IRONIC_SCRIPTS_DIR/cirros-partition.sh "$dest"
+
+        # TODO(dtantsur): stop uploading kernel/ramdisk when image_type support
+        # lands.
+        local kernel_id
+        kernel_id=$(openstack image list -f value -c ID -c Name \
+            | awk '/cirros.*kernel/ { print $1; exit 0; }')
+        die_if_not_set $LINENO kernel_id "Cannot find cirros kernel"
+
+        local ramdisk_id
+        ramdisk_id=$(openstack image list -f value -c ID -c Name \
+            | awk '/cirros.*ramdisk/ { print $1; exit 0; }')
+        die_if_not_set $LINENO ramdisk_id "Cannot find cirros ramdisk"
+
+        openstack image create $IRONIC_PARTITIONED_IMAGE_NAME \
+            --public --disk-format raw --container-format bare \
+            --property kernel_id=$kernel_id --property ramdisk_id=$ramdisk_id \
+            --file "$dest"
+
+        if [[ "$IRONIC_TEMPEST_WHOLE_DISK_IMAGE" != True ]]; then
+            IRONIC_IMAGE_NAME=$IRONIC_PARTITIONED_IMAGE_NAME
+        fi
+    fi
+}
+
 # download EFI boot loader image and upload it to glance
 # this function sets ``IRONIC_EFIBOOT_ID``
 function upload_baremetal_ironic_efiboot {
@@ -3030,6 +3068,8 @@ function prepare_baremetal_basic_ops {
         upload_baremetal_ironic_efiboot
     fi
 
+    upload_image_if_needed
+
     configure_tftpd
     configure_iptables
 }
@@ -3152,6 +3192,13 @@ function ironic_configure_tempest {
         iniset $TEMPEST_CONFIG baremetal partition_image_ref $image_uuid
     fi
 
+    # Our cirros images cannot do local boot in legacy mode.
+    if [[ "${IRONIC_PARTITIONED_IMAGE_NAME}" =~ cirros && "${IRONIC_BOOT_MODE}" == "bios" ]]; then
+        iniset $TEMPEST_CONFIG baremetal partition_netboot True
+    else
+        iniset $TEMPEST_CONFIG baremetal partition_netboot False
+    fi
+
     if [[ "$IRONIC_IP_VERSION" == "6" ]]; then
         iniset $TEMPEST_CONFIG baremetal whole_disk_image_url "http://$IRONIC_HOST_IPV6:$IRONIC_HTTP_PORT/${IRONIC_WHOLEDISK_IMAGE_NAME}.img"
     else
@@ -3174,6 +3221,8 @@ function ironic_configure_tempest {
     # Driver for API tests
     iniset $TEMPEST_CONFIG baremetal driver fake-hardware
 
+    iniset $TEMPEST_CONFIG baremetal default_boot_option $IRONIC_DEFAULT_BOOT_OPTION
+
     local adjusted_root_disk_size_gb
     if [[ "$IRONIC_IS_HARDWARE" == "False" ]]; then
         adjusted_root_disk_size_gb=$(( ${IRONIC_VM_SPECS_DISK} - ${IRONIC_VM_EPHEMERAL_DISK} ))
diff --git a/devstack/tools/ironic/scripts/cirros-partition.sh b/devstack/tools/ironic/scripts/cirros-partition.sh
new file mode 100755
index 000000000..40c87b19e
--- /dev/null
+++ b/devstack/tools/ironic/scripts/cirros-partition.sh
@@ -0,0 +1,69 @@
+#!/bin/bash
+
+set -eu -o pipefail
+
+VERBOSE=${VERBOSE:-True}
+if [[ "$VERBOSE" == True ]]; then
+    set -x
+    guestfish_args="--verbose"
+fi
+
+CIRROS_VERSION=${CIRROS_VERSION:-0.5.2}
+CIRROS_ARCH=${CIRROS_ARCH:-x86_64}
+# TODO(dtantsur): use the image cached on infra images in the CI
+DISK_URL=http://download.cirros-cloud.net/${CIRROS_VERSION}/cirros-${CIRROS_VERSION}-${CIRROS_ARCH}-disk.img
+OUT=$(realpath ${1:-rootfs.img})
+
+IRONIC_TTY_DEV=${IRONIC_TTY_DEV:-ttyS0,115200}
+# rdroot : boot from the ramdisk present on the root partition instead of
+#          mounting the root partition.
+# dslist : disable Nova metadata support, it takes a long time on boot.
+KARGS=${KARGS:-nofb nomodeset vga=normal console=${IRONIC_TTY_DEV} rdroot dslist=configdrive}
+
+workdir=$(mktemp -d)
+root_mp=$workdir/root
+efi_mp=$workdir/efi
+dest=$workdir/dest
+
+cd $workdir
+
+curl -Lf -o disk.qcow2 $DISK_URL
+qemu-img convert -O raw disk.qcow2 disk.img
+rm disk.qcow2
+
+# kpartx automatically allocates loop devices for all partitions in the image
+device=$(sudo kpartx -av disk.img | grep -oE 'loop[0-9]+p' | head -1)
+
+function clean_up {
+    set +e
+    sudo umount $efi_mp
+    sudo umount $root_mp
+    sudo kpartx -d $workdir/disk.img
+    sudo rm -rf $workdir
+}
+trap clean_up EXIT
+
+# TODO(dtantsur): some logic instead of hardcoding numbers 1 and 15?
+rootdev=/dev/mapper/${device}1
+efidev=/dev/mapper/${device}15
+
+mkdir -p $root_mp $efi_mp $dest/boot/efi
+sudo mount $rootdev $root_mp
+sudo mount $efidev $efi_mp
+
+sudo cp -aR $root_mp/* $dest/
+sudo cp -aR $efi_mp/EFI $dest/boot/efi/
+
+# These locations are required by IPA even when it does not really run
+# grub-install.
+sudo mkdir -p $dest/{dev,proc,run,sys}
+
+# The default arguments don't work for us, update grub configuration.
+sudo sed -i "/^ *linux /s/\$/ $KARGS/" $dest/boot/efi/EFI/ubuntu/grub.cfg
+
+LIBGUESTFS_BACKEND=direct sudo -E \
+    virt-make-fs --size +50M --type ext3 --label cirros-rootfs \
+    ${guestfish_args:-} "$dest" "$OUT"
+
+sudo chown $USER "$OUT"
+qemu-img info "$OUT"