nova-compute: enable to use ceph

Enable nova-compute to:

* use cinder volume stored in a ceph pool as a block device
* store glance image into a ceph pool.

Also port 2 patches from https://github.com/openstack/nova
branch master into Havana branch.

Signed-off-by: Vu Tran <vu.tran@windriver.com>

3 files changed, 185 insertions, 0 deletions

diff --git a/meta-openstack/recipes-devtools/python/python-nova/Fix-rbd-backend-not-working-for-none-admin-ceph-user.patch b/meta-openstack/recipes-devtools/python/python-nova/Fix-rbd-backend-not-working-for-none-admin-ceph-user.patch
new file mode 100644
index 0000000..c5fbbbb
--- /dev/null
+++ b/meta-openstack/recipes-devtools/python/python-nova/Fix-rbd-backend-not-working-for-none-admin-ceph-user.patch
@@ -0,0 +1,130 @@
+Fix rbd backend not working for none admin ceph user
+
+commit 7104a6d8b1885f04d3012d621ec14f4be5145994 from
+https://github.com/openstack/nova
+
+The 'rbd_user' option allows nova administrators to override the default user
+account used for RBD operations, with one that has potentially lower
+privileges.  Not all parts of the Nova code honoured the 'rbd_user' option,
+which resulted in failures when attempting to use a lesser privileged user for
+RBD. This fix ensures the '--id' and '--config' parameters are passed to the
+RBD command line tools in all cases.
+
+Change-Id: Id99aa303791143360ad78074184583048e4878f0
+Close-bug: 1255536
+
+Signed-off-by: Haomai Wang <haomai@unitedstack.com>
+[VT: Ported to Havana branch]
+Signed-off-by: Vu Tran <vu.tran@windriver.com>
+
+diff --git a/nova/tests/virt/libvirt/test_libvirt_utils.py b/nova/tests/virt/libvirt/test_libvirt_utils.py
+index ea83d3a..74f4a9e 100644
+--- a/nova/tests/virt/libvirt/test_libvirt_utils.py
++++ b/nova/tests/virt/libvirt/test_libvirt_utils.py
+@@ -40,3 +40,44 @@ blah BLAH: bb
+         self.mox.ReplayAll()
+         disk_type = libvirt_utils.get_disk_type(path)
+         self.assertEqual(disk_type, 'raw')
++
++    def test_list_rbd_volumes(self):
++        conf = '/etc/ceph/fake_ceph.conf'
++        pool = 'fake_pool'
++        user = 'user'
++        self.flags(images_rbd_ceph_conf=conf, group='libvirt')
++        self.flags(rbd_user=user, group='libvirt')
++        fn = self.mox.CreateMockAnything()
++        self.mox.StubOutWithMock(libvirt_utils.utils,
++                                 'execute')
++        libvirt_utils.utils.execute('rbd', '-p', pool, 'ls', '--id',
++                                    user,
++                                    '--conf', conf).AndReturn(("Out", "Error"))
++        self.mox.ReplayAll()
++
++        libvirt_utils.list_rbd_volumes(pool)
++
++        self.mox.VerifyAll()
++
++    def test_remove_rbd_volumes(self):
++        conf = '/etc/ceph/fake_ceph.conf'
++        pool = 'fake_pool'
++        user = 'user'
++        names = ['volume1', 'volume2', 'volume3']
++        self.flags(images_rbd_ceph_conf=conf, group='libvirt')
++        self.flags(rbd_user=user, group='libvirt')
++        fn = self.mox.CreateMockAnything()
++        libvirt_utils.utils.execute('rbd', '-p', pool, 'rm', 'volume1',
++                                    '--id', user, '--conf', conf, attempts=3,
++                                    run_as_root=True)
++        libvirt_utils.utils.execute('rbd', '-p', pool, 'rm', 'volume2',
++                                    '--id', user, '--conf', conf, attempts=3,
++                                    run_as_root=True)
++        libvirt_utils.utils.execute('rbd', '-p', pool, 'rm', 'volume3',
++                                    '--id', user, '--conf', conf, attempts=3,
++                                    run_as_root=True)
++        self.mox.ReplayAll()
++
++        libvirt_utils.remove_rbd_volumes(pool, *names)
++
++        self.mox.VerifyAll()
+diff --git a/nova/virt/libvirt/imagebackend.py b/nova/virt/libvirt/imagebackend.py
+index 51872cf..89fe494 100644
+--- a/nova/virt/libvirt/imagebackend.py
++++ b/nova/virt/libvirt/imagebackend.py
+@@ -460,8 +460,10 @@ class Rbd(Image):
+ 
+     def _ceph_args(self):
+         args = []
+-        args.extend(['--id', CONF.rbd_user])
+-        args.extend(['--conf', self.ceph_conf])
++        if CONF.rbd_user:
++            args.extend(['--id', CONF.rbd_user])
++        if self.ceph_conf:
++            args.extend(['--conf', self.ceph_conf])
+         return args
+ 
+     def _get_mon_addrs(self):
+diff --git a/nova/virt/libvirt/utils.py b/nova/virt/libvirt/utils.py
+index d7c92b7..db533e1 100644
+--- a/nova/virt/libvirt/utils.py
++++ b/nova/virt/libvirt/utils.py
+@@ -262,12 +262,27 @@ def import_rbd_image(*args):
+     execute('rbd', 'import', *args)
+ 
+ 
++def _run_rbd(*args, **kwargs):
++    total = list(args)
++
++    if CONF.rbd_user:
++        total.extend(['--id', str(CONF.rbd_user)])
++    if CONF.libvirt_images_rbd_ceph_conf:
++        total.extend(['--conf', str(CONF.libvirt_images_rbd_ceph_conf)])
++
++    return utils.execute(*total, **kwargs)
++
++
+ def list_rbd_volumes(pool):
+     """List volumes names for given ceph pool.
+ 
+     :param pool: ceph pool name
+     """
+-    out, err = utils.execute('rbd', '-p', pool, 'ls')
++    try:
++        out, err = _run_rbd('rbd', '-p', pool, 'ls')
++    except processutils.ProcessExecutionError:
++        # No problem when no volume in rbd pool
++        return []
+ 
+     return [line.strip() for line in out.splitlines()]
+ 
+@@ -275,9 +290,9 @@ def list_rbd_volumes(pool):
+ def remove_rbd_volumes(pool, *names):
+     """Remove one or more rbd volume."""
+     for name in names:
+-        rbd_remove = ('rbd', '-p', pool, 'rm', name)
++        rbd_remove = ['rbd', '-p', pool, 'rm', name]
+         try:
+-            execute(*rbd_remove, attempts=3, run_as_root=True)
++            _run_rbd(*rbd_remove, attempts=3, run_as_root=True)
+         except processutils.ProcessExecutionError:
+             LOG.warn(_("rbd remove %(name)s in pool %(pool)s failed"),
+                      {'name': name, 'pool': pool})
diff --git a/meta-openstack/recipes-devtools/python/python-nova/Make-rbd.libvirt_info-parent-class-compatible.patch b/meta-openstack/recipes-devtools/python/python-nova/Make-rbd.libvirt_info-parent-class-compatible.patch
new file mode 100644
index 0000000..542abf5
--- /dev/null
+++ b/meta-openstack/recipes-devtools/python/python-nova/Make-rbd.libvirt_info-parent-class-compatible.patch
@@ -0,0 +1,48 @@
+Make rbd.libvirt_info parent class compatible
+
+commit 7a34be0ec0cd0cb9555fe64ff6c486faae1ae91d from
+https://github.com/openstack/nova
+
+Rbd.libvirt_info function definition misses hypervisor_version argument added in change:
+https://review.openstack.org/32379
+
+Closes-Bug: #1233188
+Change-Id: Ib68d743e783af0f6d82d2ba180869ee642e86050
+
+diff --git a/nova/tests/virt/libvirt/test_imagebackend.py b/nova/tests/virt/libvirt/test_imagebackend.py
+index 2455ec8..5bfa94d 100644
+--- a/nova/tests/virt/libvirt/test_imagebackend.py
++++ b/nova/tests/virt/libvirt/test_imagebackend.py
+@@ -20,6 +20,8 @@ import os
+ import fixtures
+ from oslo.config import cfg
+ 
++from inspect import getargspec
++
+ from nova import exception
+ from nova.openstack.common import uuidutils
+ from nova import test
+@@ -630,6 +632,10 @@ class RbdTestCase(_ImageTestCase, test.NoDBTestCase):
+ 
+         self.assertEqual(fake_processutils.fake_execute_get_log(), [])
+ 
++    def test_parent_compatible(self):
++        self.assertEqual(getargspec(imagebackend.Image.libvirt_info),
++             getargspec(self.image_class.libvirt_info))
++
+ 
+ class BackendTestCase(test.NoDBTestCase):
+     INSTANCE = {'name': 'fake-instance',
+diff --git a/nova/virt/libvirt/imagebackend.py b/nova/virt/libvirt/imagebackend.py
+index e900789..51872cf 100644
+--- a/nova/virt/libvirt/imagebackend.py
++++ b/nova/virt/libvirt/imagebackend.py
+@@ -482,7 +482,7 @@ class Rbd(Image):
+         return hosts, ports
+ 
+     def libvirt_info(self, disk_bus, disk_dev, device_type, cache_mode,
+-            extra_specs):
++            extra_specs, hypervisor_version):
+         """Get `LibvirtConfigGuestDisk` filled for this image.
+ 
+         :disk_dev: Disk bus device name
diff --git a/meta-openstack/recipes-devtools/python/python-nova/nova.conf b/meta-openstack/recipes-devtools/python/python-nova/nova.conf
index 84ef48b..8aaf41a 100644
--- a/meta-openstack/recipes-devtools/python/python-nova/nova.conf
+++ b/meta-openstack/recipes-devtools/python/python-nova/nova.conf
@@ -21,6 +21,7 @@ my_ip = %CONTROLLER_IP%
 glance_host = %CONTROLLER_IP%
 lock_path=/var/lock/nova/
 state_path=/var/run/nova/
+libvirt_images_type = %LIBVIRT_IMAGES_TYPE%
 
 #VNC
 vnc_enabled = true
@@ -61,3 +62,9 @@ instance_usage_audit_period=hour
 notify_on_state_change=vm_and_task_state
 notification_driver=nova.openstack.common.notifier.rpc_notifier
 notification_driver=ceilometer.compute.nova_notifier
+
+# nova-compute configuration for ceph
+libvirt_images_rbd_pool=cinder-volumes
+libvirt_images_rbd_ceph_conf=/etc/ceph/ceph.conf
+rbd_user=cinder-volume
+#rbd_secret_uuid=