[libvirt] memory ballooning and nova
Is Libvirt memory ballooning managed by nova in OpenStack Juno? Is Libvirt memory ballooning independent from the OpenStack "RAM allocation ratio"? and allow a VM to expand (page out) even though the overall RAM allocation ratio is already at his maximum? Thanks, Regards,
On Wed, Feb 25, 2015 at 11:27:23AM +0100, Raymond Durand wrote:
Is Libvirt memory ballooning managed by nova in OpenStack Juno?
Is Libvirt memory ballooning independent from the OpenStack "RAM allocation ratio"? and allow a VM to expand (page out) even though the overall RAM allocation ratio is already at his maximum?
OpenStack doesn't do anything with ballooning. You get the allocated memory at boot and it never gets changed thereafter. Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|
Thanks. Is it possible to enable/disable which parameters are triggered by Nova on Libvirt? ie. -device virtio-balloon -pci-device isa-serial Regards, 2015-02-25 11:30 GMT+01:00 Daniel P. Berrange <berrange@redhat.com>:
On Wed, Feb 25, 2015 at 11:27:23AM +0100, Raymond Durand wrote:
Is Libvirt memory ballooning managed by nova in OpenStack Juno?
Is Libvirt memory ballooning independent from the OpenStack "RAM allocation ratio"? and allow a VM to expand (page out) even though the overall RAM allocation ratio is already at his maximum?
OpenStack doesn't do anything with ballooning. You get the allocated memory at boot and it never gets changed thereafter.
Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|
On Wed, Feb 25, 2015 at 11:38:46AM +0100, Raymond Durand wrote:
Thanks.
Is it possible to enable/disable which parameters are triggered by Nova on Libvirt? ie. -device virtio-balloon -pci-device isa-serial
No, these are a standard part of Nova Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|
Ok thanks. Regards, 2015-03-05 20:45 GMT+01:00 Daniel P. Berrange <berrange@redhat.com>:
On Wed, Feb 25, 2015 at 11:38:46AM +0100, Raymond Durand wrote:
Thanks.
Is it possible to enable/disable which parameters are triggered by Nova on Libvirt? ie. -device virtio-balloon -pci-device isa-serial
No, these are a standard part of Nova
Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|
participants (2)
-
Daniel P. Berrange -
Raymond Durand