[virt-tools-list] Using LV as guest disk on KVM

[Cole Robinson]

On 11/18/2014 06:50 PM, Richard Taubo wrote:
> On Nov 19, 2014, at 12:28 AM, Cole Robinson <crobinso at redhat.com> wrote:
>>
>> On 11/18/2014 06:26 PM, Richard Taubo wrote:
>>> Hi!
>>>
>>> I have created a guest disk like this:
>>> a) lvcreate -L 30G -n Vm1 VolGroup
>>> b) mkfs.xfs /dev/VolGroup/Vm1
>>>
>>> And installed the VM like this:
>>> c) virt-install --name=vm1.mydomain.com \
>>> 	--disk path=/dev/VolGroup/Vm1 \
>>> 	… rest_of_arguments
>>>
>>> Questions:
>>> 1) 	Is b) above necessary, or are a) and c) sufficient?
>>>
>>> 2) 	If b) is necessary, should /dev/VolGroup/Vm1 be mounted while installing and
>>> 	while running the VM?
>>>
>>
>> If you're passing OS install media to virt-install, the b) is not required: the os installer will format the disk, same as it would on a physical machine.
>
> Thanks!
>
> 1) So no mounting on host then?

No, shouldn't be required.

> 2) Is it possible to take a LVM snapshot of the guest from the host (and make a backup)?
>

Yes, but you'll want to make sure the guest is shutoff and not writing to the 
LV. I'm not too familiar with LVM snapshots though

- Cole