5:17 a.m.
Hi all,
it's possible to change/add the QoS settings for a running domain?
I edited the domain definition with virsh but it seems to have no effect until I shut down
the domain.
libvirt version 0.9.13
kvm-qemu version 1.2.0
Best,
Davide.
7:53 a.m.
On 02/13/2013 04:17 AM, Davide Guerri wrote:
Hi all,
it's possible to change/add the QoS settings for a running domain?
I edited the domain definition with virsh but it seems to have no effect until I shut
down the domain.
You are correct that 'virsh edit' only affects the next boot of a guest;
to change parameters on the fly, you have to use hotplug commands.
Which particular QoS settings in the XML are you trying to change, so I
can point out which virsh command is the hotplug for that setting? For
example, 'virsh memtune' can be used to hotplug in new values for the
<memtune> XML element.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
7:55 a.m.
On 13/feb/2013, at 14:53, Eric Blake <eblake(a)redhat.com> wrote:
On 02/13/2013 04:17 AM, Davide Guerri wrote:
Which particular QoS settings in the XML are you trying to change, so
I
can point out which virsh command is the hotplug for that setting? For
example, 'virsh memtune' can be used to hotplug in new values for the
<memtune> XML element.
bandwidth, inbound and outbound
Thanks!
D.
7:58 a.m.
On 13.02.2013 14:55, Davide Guerri wrote:
On 13/feb/2013, at 14:53, Eric Blake <eblake(a)redhat.com>
wrote:
> On 02/13/2013 04:17 AM, Davide Guerri wrote:
> Which particular QoS settings in the XML are you trying to change, so I
> can point out which virsh command is the hotplug for that setting? For
> example, 'virsh memtune' can be used to hotplug in new values for the
> <memtune> XML element.
bandwidth, inbound and outbound
Thanks!
D.
I haven't gone through the code to tell for sure, but for now you can
only set the network part of QoS (via virsh net-update) while the
domain's interface is not supported yet. However, patches are welcome :)
Michal
8:05 a.m.
I've just found this:
domiftune domain interface-device [[--config] [--live] | [--current]] [--inbound
average,peak,burst] [--outbound average,peak,burst]
Set or query the domain's network interface's bandwidth parameters.
interface-device can be the interface's target name (<target
dev='name'/>), or the MAC address.
If no --inbound or --outbound is specified, this command will query and show the bandwidth
settings. Otherwise, it will set the inbound or outbound bandwidth. average,peak,burst is
the same as in command attach-interface.
If --live is specified, affect a running guest. If --config is specified, affect the next
boot of a persistent guest. If --current is specified, affect the current guest state.
Both --live and --current flags may be given, but --current is exclusive. If no flag is
specified, behavior is different depending on hypervisor.
I'm gonna try it.
I thought the edit command was to perform on-the-fly editing of VMs
I should have read the manual :)
On 13/feb/2013, at 14:58, Michal Privoznik <mprivozn(a)redhat.com> wrote:
On 13.02.2013 14:55, Davide Guerri wrote:
> On 13/feb/2013, at 14:53, Eric Blake <eblake(a)redhat.com> wrote:
>
>> On 02/13/2013 04:17 AM, Davide Guerri wrote:
>
>> Which particular QoS settings in the XML are you trying to change, so I
>> can point out which virsh command is the hotplug for that setting? For
>> example, 'virsh memtune' can be used to hotplug in new values for the
>> <memtune> XML element.
>
>
> bandwidth, inbound and outbound
>
> Thanks!
>
> D.
>
I haven't gone through the code to tell for sure, but for now you can
only set the network part of QoS (via virsh net-update) while the
domain's interface is not supported yet. However, patches are welcome :)
Michal
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4 comments
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participants (4)
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Davide Guerri -
Davide Guerri -
Eric Blake -
Michal Privoznik