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License: Apache License 2.0
OpenNebula StorPool Storage Driver
License: Apache License 2.0
Here's a deployment tweak script to fix OpenNebula/one#4045
# Due to the nature of q35 model, there are no hotplugging slots available. See
# https://libvirt.org/pci-hotplug.html for more info. We need to hack the
# libvirt config (raw data) to have:
#
# pcie-root - normally autocreated but needs to be defined here
# pcie-to-pci-bridge - for legacy devices to hotplug to like virtio networking
# pcie-root-port - A large number of ports defined. The normal devices (disks
# etc) will take these first so we need a number of additional free ones.
machine_type = root.find("./os/type")
if 'q35' in machine_type.attrib['machine']:
new_device = ET.SubElement(root, 'devices', {})
ET.SubElement(new_device, 'controller', {
'type': 'pci',
'model': 'pcie-root'
})
for i in range(0,16):
ET.SubElement(new_device, 'controller', {
'type': 'pci',
'model': 'pcie-root-port'
})
ET.SubElement(new_device, 'controller', {
'type': 'pci',
'model': 'pcie-to-pci-bridge'
})
For https://github.com/OpenNebula/addon-storpool/blob/master/vmm/kvm/deploy-tweaks.d.example/hyperv-clock.py change to:
clock = root.find("./clock")
hyperv = root.find("./features/hyperv")
if hyperv is not None:
hyperv.append(ET.Element("synic", state = 'on'))
hyperv.append(ET.Element("stimer", state = 'on'))
Previously idling was ~30-40% on those servers, now 1-3% cpu.
In relation with OpenNebula/one#6162 issue, we have updated the datastore drivers to take the driver message action through stdin. The change is rather simple, just read DRV_ACTION from stdin, see for example this change, something like:
DRV_ACTION=`cat -`
ID=$1
This needs to happen for every datastore/*
action file and tm/monitor
script (for example see here)
Note: Releases 6.4.x and 6.6.x will support both behaviors (configurable through oned.conf) to preserve compatibility
This link is broken in the readme. I would fix the link, but I don't know where it is supposed to link to
For OpenNebula 5.10.x please use the following installation instructions For OpenNebula 5.6.x please use the following installation instructions For OpenNebula 5.4.x please use the following installation instructions
https://github.com/OpenNebula/addon-storpool/blob/master/docs/install-5.10.0.md
Hi
I just found https://github.com/OpenNebula/addon-storpool/blob/master/vmm/kvm/deploy-tweaks.d.example/cpu.py
while playing with the virt-xml
command on Debian from the virtinst package. This command uses this Python module:
/usr/share/virt-manager/virtinst/domain/cpu.py
Might that be helpful? I have not found any reference in this repo to virtinst or virt-xml.
PS: I currently don’t use OpenNebula, so if I am missing something please excuse.
ONE defaults to the libvirt default which is very legacy cirrus driver. virtio should be fine for all hosts as falls back to standard VGA if no drivers installed. Suggest something like:
+# Add in a modern graphics driver (not the default legacy cirrus driver)
+# See full details at
+# https://www.kraxel.org/blog/2019/09/display-devices-in-qemu/ . We should
+# probably use vhostuser in a newer libvirt version for extra speed and
+# security
+if not root.find("./devices/video"):
+ new_device = ET.SubElement(root, 'devices')
+ video = ET.SubElement(new_device, 'video')
+ ET.SubElement(video, 'model', {
+ # should have vga fallback if no virtio drivers specified, but if we have virtio then will be much better
+ 'type': 'virtio',
+ 'vram': '16384',
+ })
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