116 lines
4.4 KiB
Diff
116 lines
4.4 KiB
Diff
|
From 6740c4141ea1152529b82cbf6e5b808eaba912e7 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Chet Burgess <cfb@metacloud.com>
|
||
|
|
Date: Thu, 9 May 2013 09:57:28 +0000
|
||
|
|
Subject: [PATCH] Check QCOW2 image size during root disk creation
|
||
|
|
|
||
|
|
glance can only tell us the size of the file, not the virtual
|
||
|
|
size of the QCOW2. As such we need to check the virtual size of
|
||
|
|
the image once its cached and ensure it's <= to the flavor's
|
||
|
|
root disk size.
|
||
|
|
|
||
|
|
Change-Id: I833467284126557eb598b8350a84e10c06292fa9
|
||
|
|
Fixes: bug 1177830
|
||
|
|
(cherry picked from commit 44a8aba1d5da87d54db48079103fdef946666d80)
|
||
|
|
---
|
||
|
|
nova/tests/test_imagebackend.py | 18 ++++++++++++++++++
|
||
|
|
nova/virt/libvirt/imagebackend.py | 12 ++++++++++++
|
||
|
|
2 files changed, 30 insertions(+)
|
||
|
|
|
||
|
|
diff --git a/nova/tests/test_imagebackend.py b/nova/tests/test_imagebackend.py
|
||
|
|
index f0bb718..da14f20 100644
|
||
|
|
--- a/nova/tests/test_imagebackend.py
|
||
|
|
+++ b/nova/tests/test_imagebackend.py
|
||
|
|
@@ -17,6 +17,7 @@
|
||
|
|
|
||
|
|
import os
|
||
|
|
|
||
|
|
+from nova import exception
|
||
|
|
from nova import flags
|
||
|
|
from nova import test
|
||
|
|
from nova.tests import fake_libvirt_utils
|
||
|
|
@@ -190,7 +191,10 @@ class Qcow2TestCase(_ImageTestCase):
|
||
|
|
fn = self.prepare_mocks()
|
||
|
|
fn(target=self.TEMPLATE_PATH)
|
||
|
|
self.mox.StubOutWithMock(os.path, 'exists')
|
||
|
|
+ self.mox.StubOutWithMock(imagebackend.disk, 'get_disk_size')
|
||
|
|
os.path.exists(self.QCOW2_BASE).AndReturn(False)
|
||
|
|
+ imagebackend.disk.get_disk_size(self.TEMPLATE_PATH
|
||
|
|
+ ).AndReturn(self.SIZE)
|
||
|
|
imagebackend.libvirt_utils.copy_image(self.TEMPLATE_PATH,
|
||
|
|
self.QCOW2_BASE)
|
||
|
|
imagebackend.disk.extend(self.QCOW2_BASE, self.SIZE)
|
||
|
|
@@ -203,11 +207,25 @@ class Qcow2TestCase(_ImageTestCase):
|
||
|
|
|
||
|
|
self.mox.VerifyAll()
|
||
|
|
|
||
|
|
+ def test_create_image_too_small(self):
|
||
|
|
+ self.mox.StubOutWithMock(imagebackend.disk, 'get_disk_size')
|
||
|
|
+ imagebackend.disk.get_disk_size(self.TEMPLATE_PATH
|
||
|
|
+ ).AndReturn(self.SIZE)
|
||
|
|
+ self.mox.ReplayAll()
|
||
|
|
+
|
||
|
|
+ image = self.image_class(self.INSTANCE, self.NAME)
|
||
|
|
+ self.assertRaises(exception.ImageTooLarge, image.create_image, None,
|
||
|
|
+ self.TEMPLATE_PATH, 1)
|
||
|
|
+ self.mox.VerifyAll()
|
||
|
|
+
|
||
|
|
def test_create_image_with_size_template_exists(self):
|
||
|
|
fn = self.prepare_mocks()
|
||
|
|
fn(target=self.TEMPLATE_PATH)
|
||
|
|
self.mox.StubOutWithMock(os.path, 'exists')
|
||
|
|
+ self.mox.StubOutWithMock(imagebackend.disk, 'get_disk_size')
|
||
|
|
os.path.exists(self.QCOW2_BASE).AndReturn(True)
|
||
|
|
+ imagebackend.disk.get_disk_size(self.TEMPLATE_PATH
|
||
|
|
+ ).AndReturn(self.SIZE)
|
||
|
|
imagebackend.libvirt_utils.create_cow_image(self.QCOW2_BASE,
|
||
|
|
self.PATH)
|
||
|
|
self.mox.ReplayAll()
|
||
|
|
diff --git a/nova/virt/libvirt/imagebackend.py b/nova/virt/libvirt/imagebackend.py
|
||
|
|
index 0f2f044..5e7023e 100644
|
||
|
|
--- a/nova/virt/libvirt/imagebackend.py
|
||
|
|
+++ b/nova/virt/libvirt/imagebackend.py
|
||
|
|
@@ -19,14 +19,17 @@ import abc
|
||
|
|
import contextlib
|
||
|
|
import os
|
||
|
|
|
||
|
|
+from nova import exception
|
||
|
|
from nova import flags
|
||
|
|
from nova.openstack.common import cfg
|
||
|
|
from nova.openstack.common import excutils
|
||
|
|
+from nova.openstack.common import log as logging
|
||
|
|
from nova import utils
|
||
|
|
from nova.virt.disk import api as disk
|
||
|
|
from nova.virt.libvirt import config
|
||
|
|
from nova.virt.libvirt import utils as libvirt_utils
|
||
|
|
|
||
|
|
+
|
||
|
|
__imagebackend_opts = [
|
||
|
|
cfg.StrOpt('libvirt_images_type',
|
||
|
|
default='default',
|
||
|
|
@@ -46,6 +49,8 @@ __imagebackend_opts = [
|
||
|
|
FLAGS = flags.FLAGS
|
||
|
|
FLAGS.register_opts(__imagebackend_opts)
|
||
|
|
|
||
|
|
+LOG = logging.getLogger(__name__)
|
||
|
|
+
|
||
|
|
|
||
|
|
class Image(object):
|
||
|
|
__metaclass__ = abc.ABCMeta
|
||
|
|
@@ -170,6 +175,13 @@ class Qcow2(Image):
|
||
|
|
disk.extend(qcow2_base, size)
|
||
|
|
libvirt_utils.create_cow_image(qcow2_base, target)
|
||
|
|
|
||
|
|
+ # NOTE(cfb): Having a flavor that sets the root size to 0 and having
|
||
|
|
+ # nova effectively ignore that size and use the size of the
|
||
|
|
+ # image is considered a feature at this time, not a bug.
|
||
|
|
+ if size and size < disk.get_disk_size(base):
|
||
|
|
+ LOG.error('%s virtual size larger than flavor root disk size %s' %
|
||
|
|
+ (base, size))
|
||
|
|
+ raise exception.ImageTooLarge()
|
||
|
|
prepare_template(target=base, *args, **kwargs)
|
||
|
|
with utils.remove_path_on_error(self.path):
|
||
|
|
copy_qcow2_image(base, self.path, size)
|
||
|
|
--
|
||
|
|
1.8.1.5
|
||
|
|
|