On 05/02/2015 01:41 AM, Nico Kadel-Garcia wrote:
>> 1) In virt-manager, when I allocate a new a new hard drive,
>> >    I have a check-e-do that says "allocate entire disk now".
>> >    It then goes on the create a new hard drive for me.
>> >    Whether or not that check-e-do is checked, I get the
>> >    entire size.  Do I misunderstand that check box?  I was
>> >    thinking that unchecked meant that it was dynamically
>> >    expanding up to the maximum allocated.  Am I wrong?

> It creates a "sparse" disk image. It doesn't actually use all the
> blocks on the hypervisor's disk until they are written to to by the
> guest image. This is a common way to overprovision disk on the
> virtualization server, so that clients can have space available but
> only consume what they each need.
>


Hi Nico,

That is what I thought.  But when I allocated a 40 GB
several times using both methods, ls gave me the full
size.  What am I missing?


>> 3) What is the difference between and IDE and a Virtio
>>    disk?  It the Virtio disk any faster?
>>
>> Many thanks,
>> -T

> It can be: the guest operating system has to support the drivers for
> it, and not all older operating systems do.

So, we are basically talking about a Linux OS.  And a second
drive on Windows if the guest additions will install.

Speaking of older Operating Systems that would include Frankenstein
the Elder and Frankenstein the Younger (Windows 8 and Windows 10 
preview).  Chuckle.

Speaking of these two turkeys, I can't get the video driver
to install in the Elder or anything to install on the Younger.
      https://bugzilla.redhat.com/show_bug.cgi?id=895356

Thank you for helping me with this

-T

-- 
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Computers are like air conditioners.
They malfunction when you open windows
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