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| author | Chuck Short <chuck.short@canonical.com> | 2012-06-06 22:45:25 -0400 |
|---|---|---|
| committer | Chuck Short <chuck.short@canonical.com> | 2012-06-15 15:46:30 -0400 |
| commit | 31336b35b4604f70150d0073d77dbf63b9bf7598 (patch) | |
| tree | 3a111bc6aec56e594e50e48bef569e868b29a4d2 /nova/virt | |
| parent | 5aea01e0f9ed5f79f9eda92bf4ac4340ceb33d95 (diff) | |
Add CPU arch filter scheduler support
In a mixed environment of running different CPU architecutres,
one would not want to run an ARM instance on a X86_64 host and
vice versa.
This scheduler filter option will prevent instances running
on a host that it is not intended for.
The libvirt driver queries the guest capabilities of the
host and stores the guest arches in the permitted_instances_types
list in the cpu_info dict of the host.
The Xen equivalent will be done later in another commit.
The arch filter will compare the instance arch against
the permitted_instances_types of a host
and filter out invalid hosts.
Also adds ARM as a valid arch to the filter.
The ArchFilter is not turned on by default.
Change-Id: I17bd103f00c25d6006a421252c9c8dcfd2d2c49b
Signed-off-by: Chuck Short <chuck.short@canonical.com>
Diffstat (limited to 'nova/virt')
| -rw-r--r-- | nova/virt/libvirt/connection.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/nova/virt/libvirt/connection.py b/nova/virt/libvirt/connection.py index 0dfc91928..7c09acc5a 100644 --- a/nova/virt/libvirt/connection.py +++ b/nova/virt/libvirt/connection.py @@ -1996,8 +1996,12 @@ class LibvirtDriver(driver.ComputeDriver): for nodes in feature_nodes: features.append(nodes.get('name')) + arch_nodes = xml.findall('.//guest/arch') + guest_cpu_arches = list(node.get('name') for node in arch_nodes) + cpu_info['topology'] = topology cpu_info['features'] = features + cpu_info['permitted_instance_types'] = guest_cpu_arches return jsonutils.dumps(cpu_info) def block_stats(self, instance_name, disk): |