add blkIoTune support for a specific device at vm creation

[Doron Fediuck]

----- Original Message -----
> From: "Mei Liu" <liumbj at linux.vnet.ibm.com>
> To: arch at ovirt.org
> Cc: dfediuck at redhat.com, wudxw at linux.vnet.ibm.com
> Sent: Monday, May 20, 2013 6:07:53 AM
> Subject: add blkIoTune support for a specific device at vm creation
> 
> Hi all,
> I would like to add blkIoTune support for a specific device at vm creation.
> 
> The code parses the 'blkIoTune' descrption for block devices at vm creation
> time and adds iotune tag accordingly.
> 
> e.g.
> Adding 'blkIoTune':{'read_bytes_sec': 6120000, 'total_iops_sec': 800} for a
> block device will add the following in dom xml for that device.
> 
> <iotune>
>       <read_bytes_sec>6120000</read_bytes_sec>
>       <total_iops_sec>800</total_iops_sec>
> </iotune>
> 
> The patch is under review in http://gerrit.ovirt.org/#/c/14636/ .
> 
> Does the patch meet the requirement of the engine or the whole
> architecture? Are the new parameters properly placed?  Any suggestions
> are welcomed.
> 
> TIA.
> 
> Best reagrds,
> Mei Liu (Rose)
> 
> 

Hi Mei Liu,
Apologies for my late response.
Is there an engine implementation for it?
This is important enough to be considered on how it works in a cluster
on not just on host level. For example, what happens during and after
live migration?