Re: Migrate to a bigger disk possible?

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Op 28-04-2020 om 07:39 schreef Peter Krempa:
> On Mon, Apr 27, 2020 at 20:58:19 +0200, Paul van der Vlis wrote:
>> Op 27-04-2020 om 10:41 schreef Peter Krempa:
>>> On Mon, Apr 27, 2020 at 10:13:37 +0200, Paul van der Vlis wrote:
>>
>>>> A point is that I have to create disk(s) on the other side with
>>>> qemu-img, I did not found a way to do that automatically. My question
>>>
>>> We are able to pre-create the storage given that a full copy is
>>> requested (copy-storage-all, not copy-storage-inc) and the images reside
>>> in a location covered by a libvirt 'directory' storage pool at least on
>>> the destination of the migration.
>>
>> Really interesting. I see an option "--migrate-disks" and I guess this
>> will do this. Something like:
>>
>> virsh migrate --live --p2p --copy-storage-all --persistent \
>>   --undefinesource --verbose ----migrate-disks vda \
>>   $vm qemu+ssh://$other/system
>>
>> Is there a way to simply migrate all writeable disks without specifying
>> them?
> 
> Yes. --copy-storage-all without actually using --migrate-disks.

What I see here, is that this migrates a qcow2 image to it's theoretical
size. So if it's a 1000G disk with 200G on it, it creates an 1000G file
on the other host. Is it possible to copy the image(s) in the "growable
way" like a qcow2 image normally is?

With regards,
Paul

-- 
Paul van der Vlis Linux systeembeheer Groningen
https://www.vandervlis.nl/




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