Re: KVM call agenda for Mar 16

Anthony Liguori
2010-03-16T15:07:16Z

On 03/16/2010 05:45 AM, Daniel P. Berrange wrote:
> On Tue, Mar 16, 2010 at 12:38:02PM +0200, Avi Kivity wrote:
>
>> On 03/16/2010 12:31 PM, Daniel P. Berrange wrote:
>>
>>>> Polling loops are an indication that something is wrong.
>>>>
>>>>
>>> Except when people suggest they are the right answer, qcow high
>>> watermark ;-P
>>>
>>>
>> I liked Anthony's suggestion of an lvm2 block format driver. No polling.
>>
> Doesn't that require giving QEMU privileges to perform LVM operations which
> implies QEMU having CAP_SYS_ADMIN ?
>

If QEMU is able to resize an LVM partition, it needs to carry privileges.

I'm not sure how this can be done safely in a lesser privileged
environment. Presumably, you're over committing storage and there's not
much you can do if the guests exhaust their storage all at once.

Regards,

Anthony Liguori

> Daniel
>