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From David Nalley <>
Subject Re: Slow snapshots with KVM
Date Wed, 30 Jan 2013 22:48:04 GMT
On Wed, Jan 30, 2013 at 5:04 PM, Nux! <> wrote:
> On 30.01.2013 21:14, Ahmad Emneina wrote:
>> KVM does a snapshot of the whole disk, as opposed to delta's like
>> xenserver. Which is why your kvm snapshots take ages to copy to secondary
>> storage.
> Is then safe to assume that a Cloudstack KVM snapshot can be used as a "full
> backup" that can be restored even though there is nothing left of the
> original virtual machine? Doesn't sound so bad from a reliability point of
> view; an incremental/delta snapshot would not be of much case in a disaster
> scenario.

As long as you realize that these are 'crash consistent' snapshots,
then yes. I personally dislike using the term 'backup' for snapshots -
it's certainly not a method I'd use to backup data that was important
to me.


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