[openstack-dev] [Nova] Issue while spawning a new VM

Fawaz Mohammed fawaz.moh.ibraheem at gmail.com
Thu Jan 7 07:36:59 UTC 2016


Hi Manda,

Your host has 3.7G of RAM, but not all of them available for your
instances. If your host is in virtualized environment, try to increase the
RAM size and choose the minimum flavor possible for your image.


On Thu, Jan 7, 2016 at 11:04 AM, manda phaneendra <mphaneendra at gmail.com>
wrote:

> Hi,
>
> When i am trying to spawn a VM, i am getting the below error in nova
> conductor log (nova conductor log is attached )
> [image: Inline image 1]
>
> This is the error i am getting in the horizon UI page
> *Error: Failed to perform requested operation on instance "vm1", the
> instance has an error status: Please try again later [Error: No valid host
> was found. There are not enough hosts available.].   *
>
>
> My ENV details :
>
> This problem started coming after i install the OVS patch using the bash
> file:
> https://raw.githubusercontent.com/priteshk/ovs/nsh-v8/
> third-party/start-ovs.sh
>
> I have gone through web and found the below problems can cause this issue.
> 1. When Nova compute node is not running.
>     In my env, nova compute node is running:
>    [image: Inline image 2]
>
> 2. I am using qemu as hypervisor
>      in /etc/nova/nova.conf
>       [libvirt]
>        inject_partition = -2
>        live_migration_uri = qemu+ssh://root1@%s/system
>        use_usb_tablet = False
>        cpu_mode = none
>        virt_type = qemu
>
> 3. Enough RAM is available to spawn a nano VM with cirros image.
> [image: Inline image 3]
>
> Please help how to solve this problem.
> Please let me know any other information or logs are required to find the
> root cause and solve this problem.
>
> Thanks in advance :)
>
> --
> Thanks & regards,
> Phaneendra Manda.
>
>
>
>
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