[DRBD-user] DRBD and KVM for a HA-Cluster ?

Digimer linux at alteeve.com
Fri Jan 14 14:48:08 CET 2011

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


On 01/14/2011 07:11 AM, Lentes, Bernd wrote:
> 
> Digimer wrote:
>>>  
>>> Hi,
>>>
>>> how can i backup a VM which is installed in a plain LV 
>> without no fs ?
>>> No fs - no mount - no backup, right ?
>>> I'd like to backup the vm's in the host.
>>> Could a lv snapshot be helpful ?
>>>
>>>
>>> Bernd
>>
>> The LV is, essentially, just like a normal hard drive from 
>> the point of view of the VM. To back it up, in a 
>> non-clustered environment, you can use tradition LVM 
>> snapshoting. This occurs below the VM, so it needs not know 
>> anything about it.
>>
> 
> But the snapshot has - i suppose - no filesystem, because the LV for the KVM has no one. So - i suppose - i can't
> mount the snapshot.
> But when i'm not able to mount it, how can it be backuped (from the host's point of view) ?
> 
> 
> Bernd

I suppose you could create the snapshot and then use 'dd' to create a
bit-level image of the LV.

-- 
Digimer
E-Mail: digimer at alteeve.com
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