[one-users] About virtual machine backup and restore question

[Daniel Molina]

Hi,

That functionality is included in 2.0.1. If you want to restore a
stopped VM you have to use the onevm resume command [1]. Check that
the VM state after stopping it is "stop".

Hope this helps.

[1] http://www.opennebula.org/documentation:rel2.0:vm_guide

On 22 March 2011 22:44, Rich Wellner <rkw at objenv.com> wrote:
> We are on 2.0.1 and when we try to start a stopped image, it says that
> cannot be done because it's in the wrong state.  Is the below a reference to
> enhancements in 2.2?
>
> rw2
>
> On 3/22/11 6:03 AM, Daniel Molina wrote:
>>
>> Hi,
>>
>> On 18 March 2011 10:07, liudewei<liudewei at neusoft.com>  wrote:
>>>
>>> Hello，
>>>
>>> About virtual machine backup and restore question,
>>>
>>> 1-Through OpenNebula Provides‘ functionality to achieve the virtual
>>> machine
>>> make image template？
>>>    if it is so,  use one.vm.savedisk of xml-rpc API  implement it？
>>>
>>>
>>> 2-Ours Big Cloud Eelastic Completing System is need to be achieve virtual
>>> machine backup and restore function，
>>> Do you think through OpenNebula can be realize it？or Do you have any good
>>> way to achieve？
>>
>> You can use the save_as functionality [1] in order to get a Virtual
>> Machine backup. If you run the following command
>> $ onevm saveas<vm_id>  <disk_id>  <image_name>
>> the specified Virtual Machine disk will be saved after a shut-down in
>> the new image (image_name).
>>
>> On the other hand when you stop a Virtual Machine, a checkpoint is
>> generated containing the VM state [2]. This checkpoint and the disks
>> files, that you can find inside the VMDIR [3, 4], are used to restore
>> the VM keeping its state.
>>
>> Moreover, we are improving the Image repository functionality, for
>> upcoming releases, adding new features like snapshotting of running
>> VMs.
>>
>> Regards.
>>
>> References:
>> [1] http://www.opennebula.org/documentation:rel2.2:img_guide#save_changes
>> [2]
>> http://www.opennebula.org/documentation:rel2.2:vm_guide#virtual_machine_life-cycle
>> [3]
>> http://www.opennebula.org/documentation:rel2.2:ignc#verifying_the_installation
>> [4] http://www.opennebula.org/documentation:rel2.2:sm
>>
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>
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-- 
Daniel Molina, Cloud Technology Engineer/Researcher
Major Contributor
OpenNebula - The Open Source Toolkit for Cloud Computing
www.OpenNebula.org | dmolina at opennebula.org