[Users] How can I create a snapshot for virtual disks only?

[Shu Ming]

Sorry for confusion here.   I  attached the snapshot created.   I don't 
think it is a standalone snapshot for disks(all eight) only.  And the 
usage of the disk image snapshot should be bound with OS memory 
snapshot.    The other problem is the VM must be paused when the 
snapshot is undergoing.

On 2012-6-28 10:16, Itamar Heim wrote:
> On 06/27/2012 09:54 PM, Rami Vaknin wrote:
>> On 06/28/2012 04:51 AM, Itamar Heim wrote:
>>> On 06/27/2012 09:38 PM, Shu Ming wrote:
>>>> On 2012-6-28 9:20, Itamar Heim wrote:
>>>>> On 06/27/2012 08:57 PM, Shu Ming wrote:
>>>>>> On 2012-6-27 23:30, Michal Skrivanek wrote:
>>>>>>> That would make sense only when you are powered off, wouldn't it?
>>>>>>> Otherwise what's the point of disk snapshot with open transactions,
>>>>>>> buffers in mem, etc, without saving the state of the VM too?
>>>>>>
>>>>>> I understand syncing virtual disk state with the OS cache is a quite
>>>>>> challenge to a snapshot tool developers. However, it is a handy
>>>>>> feature
>>>>>> for the users just want to back up their data in the disks without
>>>>>> stopping VM. As other virtualization solution support this 
>>>>>> feature, we
>>>>>> should narrow the gap to attract more users to oVirt.
>>>>>>
>>>>>
>>>>> actually, live snapshot today is only supported for disks, without 
>>>>> the
>>>>> RAM.
>>>> I can not find the button to create a snapshot for disk only in engine
>>>> 3.1 beta release. Are you talking about a undergoing project?
>>
>> The is no option to save a single disk in webadmin.
>>>
>>> live snapshot is for disks only, not for RAM.
>>> so the live snapshot button only snapshots the disks already.
>
> there is a mix of two things here:
> 1. taking snapshot of a subset of the disks.
> 2. taking snapshot of disks + ram
>
>
>>>
>>>>>
>>>>>>>
>>>>>>> Thanks,
>>>>>>> michal
>>>>>>>
>>>>>>> On 27 Jun 2012, at 17:26, Shu Ming <shuming at linux.vnet.ibm.com>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> On 2012-6-27 23:19, Dafna Ron wrote:
>>>>>>>>> Hi,
>>>>>>>>>
>>>>>>>>> no. the snapshot is for the entire vm and it's disks.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On 06/27/2012 05:31 PM, Shu Ming wrote:
>>>>>>>>>> Hi,
>>>>>>>>>>
>>>>>>>>>> I am testing oVirt engine 3.1 beta release 06-07. I tried
>>>>>>>>>> "snapshots-->create" button for a VM and it looked like that the
>>>>>>>>>> snapshot to be created was for both the running state of the
>>>>>>>>>> system
>>>>>>>>>> and the virtual disks. I am wondering if there is any way to
>>>>>>>>>> create
>>>>>>>>>> the snapshot only for the virtual disks of the VM in engine?
>>>>>>>>>>
>>>>>>>> Do we have future plan to make snapshot for it's disks?
>>>>>>>>
>>>>>>>> -- 
>>>>>>>> Shu Ming <shuming at linux.vnet.ibm.com>
>>>>>>>> IBM China Systems and Technology Laboratory
>>>>>>>>
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> Users mailing list
>>>>>>>> Users at ovirt.org
>>>>>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>>>>
>>>>>>
>>>>>
>>>>
>>>>
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>>
>


-- 
Shu Ming <shuming at linux.vnet.ibm.com>
IBM China Systems and Technology Laboratory

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