KVM on NFS

KVM on NFS

[Andrew Holway]

Hello,

I am testing KVM on an Oracle NFS box that I have.

Does the list have any advice on best practice? I remember reading that there is stuff you can do with I/O schedulers and stuff to make it more efficient.

My VMs will primarily be running mysql databases. I am currently using o_direct.

Thanks,

Andrew

Re: KVM on NFS

[Avi Kivity]

On 10/17/2012 11:20 AM, Andrew Holway wrote:
> Hello,
> 
> I am testing KVM on an Oracle NFS box that I have.
> 
> Does the list have any advice on best practice? I remember reading that there is stuff you can do with I/O schedulers and stuff to make it more efficient.
> 
> My VMs will primarily be running mysql databases. I am currently using o_direct.
> 

O_DIRECT is good.  I/O schedulers don't affect NFS so no need to tune
anything on the host.  You might experiment with switching to the
deadline scheduler in the guest.


-- 
error compiling committee.c: too many arguments to function

Re: KVM on NFS

[Andrew Holway]

> O_DIRECT is good.  I/O schedulers don't affect NFS so no need to tune
> anything on the host.  You might experiment with switching to the
> deadline scheduler in the guest.

Ill give it a go. Any ideas how I should be tuning my NFS?

> 
> 
> -- 
> error compiling committee.c: too many arguments to function
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Re: KVM on NFS

[Avi Kivity]

On 10/17/2012 01:04 PM, Andrew Holway wrote:
> 
> 
>> O_DIRECT is good.  I/O schedulers don't affect NFS so no need to tune
>> anything on the host.  You might experiment with switching to the
>> deadline scheduler in the guest.
> 
> Ill give it a go. Any ideas how I should be tuning my NFS?

Not really.  The defaults should work well enough.


-- 
error compiling committee.c: too many arguments to function

Re: KVM on NFS

[Banyan He]

MySQl might not run good locally on the disk in the VM. It is actually 
not a good idea to run it on nfs filesystem. The startup should not be a 
problem. Once the data grows up, it will become the problem to you. Try 
to cache as much as possible that would be helping you out from lots of 
problems.

------------
Banyan He
Blog: http://www.rootong.com
Email: banyan@rootong.com

On 2012-10-17 6:46 PM, Avi Kivity wrote:
> On 10/17/2012 11:20 AM, Andrew Holway wrote:
>> Hello,
>>
>> I am testing KVM on an Oracle NFS box that I have.
>>
>> Does the list have any advice on best practice? I remember reading that there is stuff you can do with I/O schedulers and stuff to make it more efficient.
>>
>> My VMs will primarily be running mysql databases. I am currently using o_direct.
>>
> O_DIRECT is good.  I/O schedulers don't affect NFS so no need to tune
> anything on the host.  You might experiment with switching to the
> deadline scheduler in the guest.
>
>