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[Vishvananda Ishaya <vishvananda@xxxxxxxxx>]

No this does not exist.  If you are going to overprovision ram, you should probably make sure that you have swap enabled on your host.

Vish

On Apr 12, 2012, at 4:10 AM, Văn Đình Phúc wrote:

> Hi.
> I'm using Openstack (2011.3 (2011.3-nova-milestone-tarball:tarmac-20110922115702-k9nkvxqzhj130av2) with 3 Compute nodes.
> My scheduling option is default.
> I have the problem as the following steps:
> Compute node 1 is installed the modules: nova-api, nova-compute and nova-network.
> The resource of node-1 max is fitfor 3 instances (m1.small): i-00000001,   i-00000002, i-00000003.
> I turn off  i-00000001.
> and then I request new ínstance by the euca-run-instance command , My new instance ( i-00000004) is located on the node 1.
> The resources: RAM , CPU,.. of node-2 and node-3 is available.
> finally, I reboot the i-00000001.What is happen? the i-00000001 is rebooted on the node-1 , and It's shutdown off after reboot.I checked the libvirt's log :
> 
> "Failed to allocate 2147483648 B: Cannot allocate memory
> 2012-04-12 16:11:50.530: shutting down"
> So , Do Openstack have the sheduling feature when rebooting the instance ?
> 
> Example: As above , My instance (i-00000001) will be migrated to node-2 or node-3 when the resource of node-1 is not available.
> 
> <phucvdbmail.gif>
>  
> Văn Đình Phúc
> Manager - Cloud Team
> Techno Department
> Bkav Specialization Division
>  
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