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tests/vm: Allow to set qemu-img path

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By default VM build test use qemu-img from system's PATH to
create the image disk. Due the lack of qemu-img on the system
or the desire to simply use a version built with QEMU, it would
be nice to allow one to set its path. So this patch makes that
possible by reading the path to qemu-img from QEMU_IMG if set,
otherwise it fallback to default behavior.

Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Message-Id: <20191114134246.12073-2-wainersm@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
This commit is contained in:
Wainer dos Santos Moschetta 2019-11-14 08:42:46 -05:00 committed by Alex Bennée
parent afc3a8f9f1
commit 1e48931c0c
9 changed files with 16 additions and 13 deletions
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6
docs/devel/testing.rst
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@ -418,13 +418,15 @@ access, so they SHOULD NOT be exposed to external interfaces if you are
concerned about attackers taking control of the guest and potentially
exploiting a QEMU security bug to compromise the host.
QEMU binary
-----------
QEMU binaries
-------------
By default, qemu-system-x86_64 is searched in $PATH to run the guest. If there
isn't one, or if it is older than 2.10, the test won't work. In this case,
provide the QEMU binary in env var: ``QEMU=/path/to/qemu-2.10+``.
Likewise the path to qemu-img can be set in QEMU_IMG environment variable.
Make jobs
---------

1
tests/vm/Makefile.include
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@ -34,6 +34,7 @@ vm-help vm-test:
@echo " DEBUG=1 - Enable verbose output on host and interactive debugging"
@echo " V=1 - Enable verbose ouput on host and guest commands"
@echo " QEMU=/path/to/qemu - Change path to QEMU binary"
@echo " QEMU_IMG=/path/to/qemu-img - Change path to qemu-img tool"
vm-build-all: $(addprefix vm-build-, $(IMAGES))

5
tests/vm/basevm.py
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@ -152,6 +152,11 @@ class BaseVM(object):
def build_image(self, img):
raise NotImplementedError
def exec_qemu_img(self, *args):
cmd = [os.environ.get("QEMU_IMG", "qemu-img")]
cmd.extend(list(args))
subprocess.check_call(cmd)
def add_source_dir(self, src_dir):
name = "data-" + hashlib.sha1(src_dir.encode("utf-8")).hexdigest()[:5]
tarfile = os.path.join(self._tmpdir, name + ".tar")

2
tests/vm/centos
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@ -68,7 +68,7 @@ class CentosVM(basevm.BaseVM):
sys.stderr.write("Extracting the image...\n")
subprocess.check_call(["ln", "-f", cimg, img_tmp + ".xz"])
subprocess.check_call(["xz", "--keep", "-dvf", img_tmp + ".xz"])
subprocess.check_call(["qemu-img", "resize", img_tmp, "50G"])
self.exec_qemu_img("resize", img_tmp, "50G")
self.boot(img_tmp, extra_args = ["-cdrom", self._gen_cloud_init_iso()])
self.wait_ssh()
self.ssh_root_check("touch /etc/cloud/cloud-init.disabled")

4
tests/vm/fedora
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@ -74,9 +74,7 @@ class FedoraVM(basevm.BaseVM):
self.print_step("Preparing iso and disk image")
subprocess.check_call(["cp", "-f", cimg, iso])
subprocess.check_call(["qemu-img", "create", "-f", "qcow2",
img_tmp, self.size])
self.exec_qemu_img("create", "-f", "qcow2", img_tmp, self.size)
self.print_step("Booting installer")
self.boot(img_tmp, extra_args = [
"-bios", "pc-bios/bios-256k.bin",

3
tests/vm/freebsd
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@ -82,8 +82,7 @@ class FreeBSDVM(basevm.BaseVM):
self.print_step("Preparing iso and disk image")
subprocess.check_call(["cp", "-f", cimg, iso_xz])
subprocess.check_call(["xz", "-dvf", iso_xz])
subprocess.check_call(["qemu-img", "create", "-f", "qcow2",
img_tmp, self.size])
self.exec_qemu_img("create", "-f", "qcow2", img_tmp, self.size)
self.print_step("Booting installer")
self.boot(img_tmp, extra_args = [

3
tests/vm/netbsd
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@ -77,8 +77,7 @@ class NetBSDVM(basevm.BaseVM):
self.print_step("Preparing iso and disk image")
subprocess.check_call(["ln", "-f", cimg, iso])
subprocess.check_call(["qemu-img", "create", "-f", "qcow2",
img_tmp, self.size])
self.exec_qemu_img("create", "-f", "qcow2", img_tmp, self.size)
self.print_step("Booting installer")
self.boot(img_tmp, extra_args = [

3
tests/vm/openbsd
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@ -73,8 +73,7 @@ class OpenBSDVM(basevm.BaseVM):
self.print_step("Preparing iso and disk image")
subprocess.check_call(["cp", "-f", cimg, iso])
subprocess.check_call(["qemu-img", "create", "-f", "qcow2",
img_tmp, self.size])
self.exec_qemu_img("create", "-f", "qcow2", img_tmp, self.size)
self.print_step("Booting installer")
self.boot(img_tmp, extra_args = [

2
tests/vm/ubuntu.i386
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@ -70,7 +70,7 @@ class UbuntuX86VM(basevm.BaseVM):
sha256sum="28969840626d1ea80bb249c08eef1a4533e8904aa51a327b40f37ac4b4ff04ef")
img_tmp = img + ".tmp"
subprocess.check_call(["cp", "-f", cimg, img_tmp])
subprocess.check_call(["qemu-img", "resize", img_tmp, "50G"])
self.exec_qemu_img("resize", img_tmp, "50G")
self.boot(img_tmp, extra_args = ["-cdrom", self._gen_cloud_init_iso()])
self.wait_ssh()
self.ssh_root_check("touch /etc/cloud/cloud-init.disabled")