[libvirt-users] Block device IO limits

[Martin Kletzander]

On 11/26/2012 11:34 AM, Davide Guerri wrote:
> Hi all,
> is there a way to limit the throughput (or the number of operations per seconds) of a block device?
> 
> I ask because I've a couple of misconfigured VMs that are performing a lot of disk activity (swapping I'd bet but I haven't access to their OS). Since their storage is on a NFS share they are slowing down other VMs on the same share.
> 
> Thank you.
>  Davide.
> 

Hi,

there is <blkiotune> [1] that controls the throughput for the whole
domain and <iotune> [2] that controls it for each block device.

Martin

[1] http://libvirt.org/formatdomain.html#elementsBlockTuning
[2] http://libvirt.org/formatdomain.html#elementsDisks