[Xen-devel] [PATCH v3 2/5] raisin: add an hvm test

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

Add a few functions to create partitions, install and configure grub in
the VM disk. Introduce a script to loopmount a partition within a VM
disk.

Add a new test that creates a local HVM guest, boots it and check the
network.

Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>

---

Changes in v3:

- expose a _test and a _cleanup function from the test script
---
 defconfig           |    4 +--
 lib/common-tests.sh |   62 +++++++++++++++++++++++++++++++++++++++++++++++
 scripts/lopartsetup |   67 +++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/busybox-hvm   |   43 +++++++++++++++++++++++++++++++++
 tests/series        |    1 +
 5 files changed, 175 insertions(+), 2 deletions(-)
 create mode 100755 scripts/lopartsetup
 create mode 100755 tests/busybox-hvm

diff --git a/defconfig b/defconfig
index e88f3d3..664aee6 100644
--- a/defconfig
+++ b/defconfig
@@ -41,6 +41,6 @@ OVMF_REVISION="master"
 LINUX_REVISION="master"
 
 # Tests
-## All tests: busybox-pv
+## All tests: busybox-pv busybox-hvm
 ## ENABLED_TESTS is the list of test run by raise test
-ENABLED_TESTS="busybox-pv"
+ENABLED_TESTS="busybox-pv busybox-hvm"
diff --git a/lib/common-tests.sh b/lib/common-tests.sh
index 8d2ee6b..abbc91a 100644
--- a/lib/common-tests.sh
+++ b/lib/common-tests.sh
@@ -31,6 +31,18 @@ function create_loop() {
     echo $loop
 }
 
+# $1 disk name
+# print loop device name of the partition
+function create_one_partition() {
+    local disk
+    local dev
+
+    disk=$1
+    echo -e "o\nn\np\n1\n\n\nw" | $SUDO fdisk $disk &>/dev/null
+    dev=`$SUDO $BASEDIR/scripts/lopartsetup $disk | head -1 | cut -d ":" -f 1`
+    echo $dev
+}
+
 # $1 dev name
 function busybox_rootfs() {
     local dev
@@ -78,6 +90,56 @@ EOF
     rmdir $tmpdir
 }
 
+function bootloader_init() {
+    local dev
+    local devp
+    local tmpdir
+
+    dev=$1
+    devp=$2
+    tmpdir=`mktemp -d`
+
+    $SUDO mount $devp $tmpdir
+    mkdir -p $tmpdir/boot/grub
+    cp "`get_host_kernel`" $tmpdir/boot
+    cp "`get_host_initrd`" $tmpdir/boot || true
+    cat >$tmpdir/boot/grub/grub.cfg <<EOF
+set default="0"
+set timeout=0
+
+menuentry 'Xen Guest' {
+ set root=hd0,1
+ linux `get_host_kernel` root=/dev/xvda1 console=ttyS0
+EOF
+    if [[ -e `get_host_initrd` ]]
+    then
+        echo "initrd `get_host_initrd`" >> $tmpdir/boot/grub/grub.cfg
+    fi
+    echo "}" >> $tmpdir/boot/grub/grub.cfg
+
+    cat >$tmpdir/boot/grub/device.map <<EOF
+(hd0)   $dev
+(hd0,1) $devp
+EOF
+
+    if [[ $DISTRO = "Debian" ]]
+    then
+        $SUDO grub-install --no-floppy \
+            --grub-mkdevicemap=$tmpdir/boot/grub/device.map \
+            --root-directory=$tmpdir $dev
+    elif [[ $DISTRO = "Fedora" ]]
+    then
+        $SUDO grub2-install --no-floppy \
+            --grub-mkdevicemap=$tmpdir/boot/grub/device.map \
+            --root-directory=$tmpdir $dev
+    else
+        echo "I don't know how to install grub on $DISTRO"
+    fi
+
+    $SUDO umount $tmpdir
+    rmdir $tmpdir
+}
+
 function check_guest_alive() {
     local i
     i=0
diff --git a/scripts/lopartsetup b/scripts/lopartsetup
new file mode 100755
index 0000000..bf33a28
--- /dev/null
+++ b/scripts/lopartsetup
@@ -0,0 +1,67 @@
+#!/usr/bin/env bash
+#
+# Need root privileges
+#
+# Create loop devices corresponding to partitions within an existing
+# file.
+
+set -e
+
+function _help() {
+    echo "Usage: lopartsetup file"
+}
+
+function _create_loop_device() {
+    local devnode
+    local filename
+    local offset
+    local index
+
+    filename="$1"
+    index="$2"
+    offset="$3"
+
+    devnode="`losetup -f 2>/dev/null`"
+    if [[ -z "$devnode" ]]
+    then
+        echo "no loop devices available"
+        exit 1
+    fi
+
+    echo "$devnode: partition $index of $filename"
+    losetup "$devnode" "$filename" -o "$offset"
+}
+
+if [[ $# -lt 1 ]]
+then
+    _help
+    exit 1
+fi
+
+if [[ -f "$1" && -r "$1" ]]
+then
+    filename="$1"
+    shift
+else
+    echo invalid image file
+    exit 1
+fi
+
+if [[ ! "`file -b $filename`" = *"boot sector"* ]]
+then
+    echo "$filename does not have a partition table"
+    exit 1
+fi
+
+unit="`fdisk -lu $filename 2>/dev/null | grep -e "^Units = " | cut -d " " -f 
9`"
+index=0
+for i in "`fdisk -lu $filename 2>/dev/null | grep -e "^$filename"`"
+do
+    index=$((index+1))
+    offset=`echo $i | tr -s " " | cut -d " " -f 2`
+    offset=$((unit*offset))
+
+    _create_loop_device "$filename" "$index" "$offset"
+done
+
+exit 0
diff --git a/tests/busybox-hvm b/tests/busybox-hvm
new file mode 100755
index 0000000..269ef2a
--- /dev/null
+++ b/tests/busybox-hvm
@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+
+set -e
+
+function busybox-hvm-cleanup() {
+    $SUDO xl destroy raisin-test || true
+    umount $LOOP_P0 || true
+    cd "$BASEDIR"
+    $SUDO losetup -d $LOOP_P0 $LOOP
+    rm -rf $TMPDIR
+}
+
+function busybox-hvm-test() {
+    if [[ $RAISIN_ARCH != "x86_64" && $RAISIN_ARCH != "x86_32" ]]
+    then
+        echo busybox hvm test only valid on x86
+        exit 0
+    fi
+    
+    TMPDIR=`mktemp -d`
+    cd $TMPDIR
+    
+    allocate_disk busybox-vm-disk $((20*1024*1024))
+    LOOP=`create_loop busybox-vm-disk`
+    LOOP_P0=`create_one_partition busybox-vm-disk`
+    busybox_rootfs $LOOP_P0
+    busybox_network_init $LOOP_P0
+    bootloader_init $LOOP $LOOP_P0
+    
+    cat >busybox-hvm <<EOF
+builder = "hvm"
+memory = 512
+name = "raisin-test"
+vcpus = 2
+disk = [ '$LOOP,raw,hda,w' ]
+serial="pty"
+boot="c"
+vif=['bridge=xenbr1']
+EOF
+    
+    $SUDO xl create busybox-hvm
+    check_guest_alive
+}
diff --git a/tests/series b/tests/series
index a5ec626..1f5f5c6 100644
--- a/tests/series
+++ b/tests/series
@@ -1 +1,2 @@
 busybox-pv
+busybox-hvm
-- 
1.7.10.4


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