What is the intention of overcommit here? Is it allowable (possible?) to have a single VM with more RAM allocated than any physical machine?
Or VMs allocated/running that together are more than available RAM? -- Wolf On Jun 21, 2012, at 6:13 PM, Vishvananda Ishaya <[email protected]> wrote: > I just noticed there is a bug in ram_allocation_ratio, it actually only > multiplies the check for free ram which doen't do a lot. Bug filed here: > > https://bugs.launchpad.net/nova/+bug/1016273 > > In the meantime, to overcommit you will have to disable the ram check > completely by setting the following set of enabled filters in conf. > > scheduler_default_filters=AvailabilityZoneFilter,ComputeFilter > > Vish > > On Jun 21, 2012, at 3:03 PM, Sam Su wrote: > >> Hi Vish, >> >> Thank you for your response. >> >> I added a 'line ram_allocation_ratio=10' in nova.conf, then restarted >> nova-scheduler in control node. after that was done, I tried to create a VM, >> but it still failed, and the debug info is showing as below: >> http://pastebin.com/RDHb9fDU >> >> Can you help me to take a look at the error info at your convenience? >> >> Thanks, >> Sam >> >> On Thu, Jun 21, 2012 at 12:23 PM, Vishvananda Ishaya <[email protected]> >> wrote: >> Try setting: >> >> ram_allocation_ratio=10 >> >> in your nova.conf (it defaults to 1.5) >> >> Vish >> >> On Jun 21, 2012, at 11:34 AM, Sam Su wrote: >> >>> Hi, >>> >>> I have a mini openstack environment with one compute node and one nova >>> control node. There is 4G memory in the compute node, and I have allocated >>> 2 VMs with 2G memory for each VM. When I try to create another VM , I get >>> the error as below: >>> http://pastebin.com/QZMQvXtB >>> >>> I am wondering whether Openstack has support memory overcommit? How to do >>> this? >>> >>> It will be much appreciated If someone can give me some hints about this in >>> convenience. >>> >>> Thanks, >>> Sam >>> _______________________________________________ >>> Mailing list: https://launchpad.net/~openstack >>> Post to : [email protected] >>> Unsubscribe : https://launchpad.net/~openstack >>> More help : https://help.launchpad.net/ListHelp >> >> > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : [email protected] > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp
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