[CentOS-virt] proper way to snapshot

[aurfalien]

On Apr 26, 2012, at 1:54 PM, Nux! wrote:

> On 26.04.2012 18:23, aurfalien wrote:
>> Hi,
>> 
>> While there are a few howtos floating around, what is the standard
>> way to snapshot guests?
>> 
>> I went through and converted from raw to pre allocated meta data
>> qcow2 images for this purpose.
>> 
>> Some howtos suggest to do an xml snapshot file as so;
>> 
>> <domainsnapshot>
>>   <name>UbuntuServer_10.10-16032011</name>
>>   <description>Snapshot of OS install and updates</description>
>> </domainsnapshot>
>> 
>> And then to run as so;
>> 
>> virsh snapshot-create UbuntuServer_10.10 UbuntuServer_10.10-ss.xml
>> 
>> Seems a bit over kill.
>> 
>> I was thinking more along the lines of this;
>> 
>> qemu-img snapshot -c $date $filename
>> 
>> qemu-img convert -f qcow2 -O qcow2 -s $date $filename $filename-$date
>> 
>> Or something like this.Anyways, hoping to see how you all are doing
>> this for best practice sort of thing.
> 
> Hi,
> 
> I just use LVM snapshots; it's the fastest, most reliable way I could 
> come with.

Hi,

I don't have LVMs.

But if I did, would it be possible to only snapshot a directory or will it snapshot the entire file system?

- aurf