[ovirt-users] Can't move/copy VM disks between Data Centers

[Fred Rolland]

Hi,

Just to make clear what you want to achieve:
- DC1 - local storage - host1 - VMs
- DC2 - local storage - host2

You want to move the VMs from DC1 to DC2.

What you can do:
- Add a shared storage domain to the DC#1
- Move VM disk from local SD to shared storage domain
- Put shared storage domain to maintenance
- Detach shared storage from DC1
- Attach shared storage to DC2
- Activate shared storage
- You should be able to register the VM from the shared storage into the DC2
- If you want/need move disks from shared storage to local storage in DC2

Please test this flow with a dummy VM before doing on important VMs.

Regards,

Freddy

On Mon, Feb 26, 2018 at 1:46 PM, Andrei Verovski <andreil1 at starlett.lv>
wrote:

> Hi,
>
> Thanks for clarification. I’m using 4.2.
> Anyway, I have to define another data center with shared storage domain
> (since data center with local storage domain can have only 1 host), and the
> do what you have described.
>
> Is it possible to copy VM disks from 1 data center #1 local storage domain
> to another data center #2 NFS storage domain, or need to use export storage
> domain ?
>
>
>
> On 26 Feb 2018, at 13:30, Fred Rolland <frolland at redhat.com> wrote:
>
> Hi,
> Which version are you using?
>
> in 4.1 , the support of adding shared storage to local DC was added [1].
> You can copy/move disks to the shared storage domain, then detach the SD
> and attach to another DC.
>
> In any case, you wont be able to live migrate VMs from the local DC, it is
> not supported.
>
> Regards,
> Fred
>
> [1] https://ovirt.org/develop/release-management/features/storage/
> sharedStorageDomainsAttachedToLocalDC/
>
> On Fri, Feb 23, 2018 at 1:35 PM, Andrei V <andreil1 at starlett.lv> wrote:
>
>> Hi,
>>
>> I have oVirt setup, separate PC host engine + 2 nodes (#10 + #11) with
>> local storage domains (internal RAIDs).
>> 1st node #10 is currently active and can’t be turned off.
>>
>> Since oVirt doesn’t support more then 1 host in data center with local
>> storage domain as described here:
>> http://lists.ovirt.org/pipermail/users/2018-January/086118.html
>> defined another data center with 1 node #11.
>>
>> Problem:
>> 1) can’t copy or move VM disks from node #10 (even of inactive VMs) to
>> node #11, this node is NOT being shown as possible destination.
>> 2) can’t migrate active VMs to node #11.
>> 3) Added NFS shares to data center #1 -> node #10, but can’t change data
>> center #1 -> storage type to Shared, because this operation requires
>> detachment of local storage domains, which is not possible, several VMs are
>> active and can’t be stopped.
>>
>> VM disks placed on local storage domains because of performance
>> limitations of our 1Gbit network.
>> 2 VMs running our accounting/inventory control system, and are critical
>> to NFS storage performance limits.
>>
>> How to solve this problem ?
>> Thanks in advance.
>>
>> Andrei
>>
>>
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>> http://lists.ovirt.org/mailman/listinfo/users
>>
>>
>
>
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